Struct SlideContent 

pub struct SlideContent {

    pub title: String,
    pub content: Vec<String>,
    pub bullets: Vec<BulletPoint>,
    pub bullet_style: BulletStyle,
    pub title_size: Option<u32>,
    pub content_size: Option<u32>,
    pub title_bold: bool,
    pub content_bold: bool,
    pub title_italic: bool,
    pub content_italic: bool,
    pub title_underline: bool,
    pub content_underline: bool,
    pub title_color: Option<String>,
    pub content_color: Option<String>,
    pub has_table: bool,
    pub has_chart: bool,
    pub has_image: bool,
    pub layout: SlideLayout,
    pub transition: TransitionType,
    pub table: Option<Table>,
    pub shapes: Vec<Shape>,
    pub images: Vec<Image>,
    pub notes: Option<String>,
    pub connectors: Vec<Connector>,
    pub videos: Vec<Video>,
    pub audios: Vec<Audio>,
    pub charts: Vec<Chart>,
    pub code_blocks: Vec<CodeBlock>,
    pub ink_annotations: Option<InkAnnotations>,
}

Slide content for more complex presentations

Fields

title: String

content: Vec<String>

bullets: Vec<BulletPoint>

Rich bullet points with styles and levels

bullet_style: BulletStyle

Default bullet style for this slide

title_size: Option<u32>

content_size: Option<u32>

title_bold: bool

content_bold: bool

title_italic: bool

content_italic: bool

title_underline: bool

content_underline: bool

title_color: Option<String>

content_color: Option<String>

has_table: bool

has_chart: bool

has_image: bool

layout: SlideLayout

transition: TransitionType

table: Option<Table>

shapes: Vec<Shape>

images: Vec<Image>

notes: Option<String>

Speaker notes for the slide

connectors: Vec<Connector>

Connectors between shapes

videos: Vec<Video>

Videos embedded in slide

audios: Vec<Audio>

Audio files embedded in slide

charts: Vec<Chart>

Charts embedded in slide

code_blocks: Vec<CodeBlock>

Code blocks with syntax highlighting

ink_annotations: Option<InkAnnotations>

Ink annotations on the slide

Implementations

impl SlideContent

pub fn new(title: &str) -> Self

Examples found in repository

examples/table_generation.rs (line 69)

fn create_simple_table_example() -> Result<(), Box<dyn std::error::Error>> {
    let table = Table::from_data(
        vec![
            vec!["Name", "Age"],
            vec!["Alice", "30"],
            vec!["Bob", "25"],
        ],
        vec![2000000, 2000000],
        500000,
        1500000,
    );

    let slides = vec![
        SlideContent::new("Simple 2x2 Table")
            .add_bullet("Table with basic structure")
            .add_bullet("Headers and data rows"),
        SlideContent::new("Table Data")
            .table(table),
    ];

    let pptx_data = create_pptx_with_content("Simple Table", slides)?;
    fs::write("examples/output/simple_table.pptx", pptx_data)?;
    Ok(())
}

fn create_styled_table_example() -> Result<(), Box<dyn std::error::Error>> {
    let header_cells = vec![
        TableCell::new("Name").bold().background_color("003366"),
        TableCell::new("Age").bold().background_color("003366"),
        TableCell::new("City").bold().background_color("003366"),
    ];
    let header_row = TableRow::new(header_cells);

    let data_rows = vec![
        TableRow::new(vec![
            TableCell::new("Alice"),
            TableCell::new("30"),
            TableCell::new("NYC"),
        ]),
        TableRow::new(vec![
            TableCell::new("Bob"),
            TableCell::new("28"),
            TableCell::new("LA"),
        ]),
        TableRow::new(vec![
            TableCell::new("Carol"),
            TableCell::new("35"),
            TableCell::new("Chicago"),
        ]),
    ];

    let table = Table::new(
        vec![vec![header_row], data_rows].concat(),
        vec![1500000, 1500000, 1500000],
        500000,
        1500000,
    );

    let slides = vec![
        SlideContent::new("Styled Table")
            .title_bold(true)
            .title_color("003366")
            .add_bullet("Table with formatting"),
        SlideContent::new("People Data")
            .table(table),
    ];

    let pptx_data = create_pptx_with_content("Styled Table", slides)?;
    fs::write("examples/output/styled_table.pptx", pptx_data)?;
    Ok(())
}

fn create_data_table_example() -> Result<(), Box<dyn std::error::Error>> {
    let header_cells = vec![
        TableCell::new("Product").bold().background_color("1F497D"),
        TableCell::new("Revenue").bold().background_color("1F497D"),
        TableCell::new("Growth").bold().background_color("1F497D"),
    ];
    let header_row = TableRow::new(header_cells);

    let data_rows = vec![
        TableRow::new(vec![
            TableCell::new("Product A"),
            TableCell::new("$100K"),
            TableCell::new("+15%"),
        ]),
        TableRow::new(vec![
            TableCell::new("Product B"),
            TableCell::new("$150K"),
            TableCell::new("+22%"),
        ]),
        TableRow::new(vec![
            TableCell::new("Product C"),
            TableCell::new("$200K"),
            TableCell::new("+18%"),
        ]),
    ];

    let table = Table::new(
        vec![vec![header_row], data_rows].concat(),
        vec![2000000, 2000000, 1500000],
        457200,
        1400000,
    );

    let slides = vec![
        SlideContent::new("Sales Data Table")
            .title_bold(true)
            .title_size(48)
            .add_bullet("Quarterly sales figures"),
        SlideContent::new("Q1 2025 Sales")
            .table(table),
        SlideContent::new("Summary")
            .content_bold(true)
            .add_bullet("Total Revenue: $450K")
            .add_bullet("Average Growth: +18.3%")
            .add_bullet("Best Performer: Product C"),
    ];

    let pptx_data = create_pptx_with_content("Sales Data", slides)?;
    fs::write("examples/output/data_table.pptx", pptx_data)?;
    Ok(())
}

fn create_multiple_tables_example() -> Result<(), Box<dyn std::error::Error>> {
    // Table 1: Employees
    let emp_header = TableRow::new(vec![
        TableCell::new("ID").bold().background_color("4F81BD"),
        TableCell::new("Name").bold().background_color("4F81BD"),
        TableCell::new("Department").bold().background_color("4F81BD"),
    ]);
    let emp_rows = vec![
        TableRow::new(vec![
            TableCell::new("001"),
            TableCell::new("Alice"),
            TableCell::new("Engineering"),
        ]),
        TableRow::new(vec![
            TableCell::new("002"),
            TableCell::new("Bob"),
            TableCell::new("Sales"),
        ]),
        TableRow::new(vec![
            TableCell::new("003"),
            TableCell::new("Carol"),
            TableCell::new("Marketing"),
        ]),
    ];
    let emp_table = Table::new(
        vec![vec![emp_header], emp_rows].concat(),
        vec![1000000, 2000000, 2000000],
        500000,
        1500000,
    );

    // Table 2: Projects
    let proj_header = TableRow::new(vec![
        TableCell::new("Project").bold().background_color("003366"),
        TableCell::new("Status").bold().background_color("003366"),
        TableCell::new("Owner").bold().background_color("003366"),
    ]);
    let proj_rows = vec![
        TableRow::new(vec![
            TableCell::new("Project A"),
            TableCell::new("In Progress"),
            TableCell::new("Alice"),
        ]),
        TableRow::new(vec![
            TableCell::new("Project B"),
            TableCell::new("Completed"),
            TableCell::new("Bob"),
        ]),
        TableRow::new(vec![
            TableCell::new("Project C"),
            TableCell::new("Planning"),
            TableCell::new("Carol"),
        ]),
    ];
    let proj_table = Table::new(
        vec![vec![proj_header], proj_rows].concat(),
        vec![2000000, 2000000, 1500000],
        500000,
        1500000,
    );

    let slides = vec![
        SlideContent::new("Multiple Tables")
            .title_bold(true)
            .add_bullet("Slide with multiple tables"),
        SlideContent::new("Table 1: Employees")
            .table(emp_table),
        SlideContent::new("Table 2: Projects")
            .table(proj_table),
        SlideContent::new("Summary")
            .add_bullet("Total Employees: 3")
            .add_bullet("Active Projects: 3")
            .add_bullet("Completion Rate: 33%"),
    ];

    let pptx_data = create_pptx_with_content("Multiple Tables", slides)?;
    fs::write("examples/output/multiple_tables.pptx", pptx_data)?;
    Ok(())
}

examples/styled_presentation.rs (line 51)

fn create_large_title_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Large Title Slide")
            .title_size(60)  // 60pt title
            .content_size(16) // 16pt content
            .add_bullet("Small bullet point 1")
            .add_bullet("Small bullet point 2")
            .add_bullet("Small bullet point 3"),
        SlideContent::new("Regular Formatting")
            .add_bullet("Default 44pt title")
            .add_bullet("Default 28pt content")
            .add_bullet("Standard formatting"),
    ];

    let pptx_data = create_pptx_with_content("Large Title Example", slides)?;
    fs::write("examples/output/large_title.pptx", pptx_data)?;
    Ok(())
}

fn create_bold_content_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Bold Content Slide")
            .title_bold(true)
            .content_bold(true)  // Make bullets bold
            .add_bullet("Bold bullet point 1")
            .add_bullet("Bold bullet point 2")
            .add_bullet("Bold bullet point 3"),
        SlideContent::new("Regular Content")
            .title_bold(true)
            .content_bold(false)  // Regular bullets
            .add_bullet("Regular bullet point 1")
            .add_bullet("Regular bullet point 2"),
    ];

    let pptx_data = create_pptx_with_content("Bold Content Example", slides)?;
    fs::write("examples/output/bold_content.pptx", pptx_data)?;
    Ok(())
}

fn create_mixed_formatting_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Title Slide")
            .title_size(52)
            .title_bold(true)
            .content_size(24)
            .content_bold(false)
            .add_bullet("Large content text")
            .add_bullet("Still readable")
            .add_bullet("Professional look"),
        SlideContent::new("Compact Slide")
            .title_size(36)
            .title_bold(false)
            .content_size(18)
            .content_bold(true)
            .add_bullet("Smaller title")
            .add_bullet("Bold content")
            .add_bullet("Tight spacing"),
        SlideContent::new("Summary")
            .title_size(48)
            .title_bold(true)
            .content_size(32)
            .content_bold(true)
            .add_bullet("Large bold text")
            .add_bullet("High impact")
            .add_bullet("Great for emphasis"),
    ];

    let pptx_data = create_pptx_with_content("Mixed Formatting Example", slides)?;
    fs::write("examples/output/mixed_formatting.pptx", pptx_data)?;
    Ok(())
}

examples/table_demo.rs (line 6)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        // Slide 1: Title
        SlideContent::new("Table Examples")
            .add_bullet("Demonstrating table rendering in PPTX"),

        // Slide 2: Simple 2x3 table
        SlideContent::new("Employee Data")
            .table(create_employee_table()),

        // Slide 3: Styled table with colors
        SlideContent::new("Sales Summary")
            .table(create_sales_table()),

        // Slide 4: Data table
        SlideContent::new("Quarterly Results")
            .table(create_quarterly_table()),
    ];

    let pptx_data = create_pptx_with_content("Table Demo", slides)?;
    std::fs::write("table_demo.pptx", pptx_data)?;
    println!("✓ Created table_demo.pptx with 4 slides containing tables");

    Ok(())
}

examples/text_styling_complete.rs (line 55)

fn create_italic_underline_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Italic Text")
            .title_italic(true)
            .add_bullet("This is italic content")
            .add_bullet("More italic text here"),
        SlideContent::new("Underlined Text")
            .title_underline(true)
            .content_underline(true)
            .add_bullet("Underlined bullet point 1")
            .add_bullet("Underlined bullet point 2"),
        SlideContent::new("Combined Effects")
            .title_italic(true)
            .title_underline(true)
            .content_italic(true)
            .add_bullet("Italic and underlined content")
            .add_bullet("Multiple effects combined"),
    ];

    let pptx_data = create_pptx_with_content("Italic and Underline", slides)?;
    fs::write("examples/output/italic_underline.pptx", pptx_data)?;
    Ok(())
}

fn create_colored_text_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Red Title")
            .title_color("FF0000")
            .add_bullet("Red title text")
            .add_bullet("Regular content"),
        SlideContent::new("Blue Content")
            .content_color("0000FF")
            .add_bullet("Blue bullet point 1")
            .add_bullet("Blue bullet point 2")
            .add_bullet("Blue bullet point 3"),
        SlideContent::new("Green Title & Content")
            .title_color("00AA00")
            .content_color("00AA00")
            .add_bullet("Green title and content")
            .add_bullet("All text is green"),
        SlideContent::new("Purple Accent")
            .title_color("9933FF")
            .add_bullet("Purple title")
            .add_bullet("Regular content"),
    ];

    let pptx_data = create_pptx_with_content("Colored Text", slides)?;
    fs::write("examples/output/colored_text.pptx", pptx_data)?;
    Ok(())
}

fn create_combined_styling_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Bold & Italic & Red")
            .title_bold(true)
            .title_italic(true)
            .title_color("FF0000")
            .title_size(52)
            .add_bullet("Regular content"),
        SlideContent::new("Underlined Blue Content")
            .content_underline(true)
            .content_color("0000FF")
            .content_bold(true)
            .add_bullet("Bold, underlined, blue bullet")
            .add_bullet("Multiple effects applied"),
        SlideContent::new("Mixed Effects")
            .title_italic(true)
            .title_color("FF6600")
            .content_bold(true)
            .content_underline(true)
            .content_color("0066FF")
            .add_bullet("Title: italic, orange")
            .add_bullet("Content: bold, underlined, blue"),
        SlideContent::new("Professional Look")
            .title_bold(true)
            .title_size(48)
            .title_color("003366")
            .content_size(24)
            .add_bullet("Clean, professional styling")
            .add_bullet("Dark blue title with bold")
            .add_bullet("Larger content text"),
    ];

    let pptx_data = create_pptx_with_content("Combined Styling", slides)?;
    fs::write("examples/output/combined_styling.pptx", pptx_data)?;
    Ok(())
}

fn create_professional_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Company Presentation")
            .title_bold(true)
            .title_size(56)
            .title_color("003366")
            .content_size(32)
            .add_bullet("2025 Annual Review"),
        SlideContent::new("Key Highlights")
            .title_bold(true)
            .title_color("003366")
            .content_bold(true)
            .content_color("0066CC")
            .add_bullet("Revenue growth: +25%")
            .add_bullet("Market expansion: 3 new regions")
            .add_bullet("Team growth: +50 employees"),
        SlideContent::new("Strategic Initiatives")
            .title_italic(true)
            .title_color("FF6600")
            .content_underline(true)
            .add_bullet("Digital transformation")
            .add_bullet("Customer experience improvement")
            .add_bullet("Sustainability focus"),
        SlideContent::new("Q1 2025 Goals")
            .title_bold(true)
            .title_underline(true)
            .title_color("003366")
            .content_bold(true)
            .add_bullet("Launch new product line")
            .add_bullet("Expand to 5 new markets")
            .add_bullet("Achieve 30% revenue growth"),
        SlideContent::new("Thank You")
            .title_bold(true)
            .title_size(60)
            .title_color("003366")
            .content_italic(true)
            .content_size(28)
            .add_bullet("Questions & Discussion"),
    ];

    let pptx_data = create_pptx_with_content("Professional Presentation", slides)?;
    fs::write("examples/output/professional.pptx", pptx_data)?;
    Ok(())
}

examples/advanced_features.rs (line 52)

fn create_text_formatting_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Text Formatting Examples")
            .add_bullet("Bold text demonstration")
            .add_bullet("Italic text demonstration")
            .add_bullet("Underlined text demonstration")
            .add_bullet("Colored text demonstration"),
        SlideContent::new("Font Sizes")
            .add_bullet("Small text (12pt)")
            .add_bullet("Normal text (18pt)")
            .add_bullet("Large text (24pt)")
            .add_bullet("Extra large text (32pt)"),
        SlideContent::new("Combined Formatting")
            .add_bullet("Bold and italic together")
            .add_bullet("Colored and underlined text")
            .add_bullet("Large bold red text")
            .add_bullet("Small italic blue text"),
    ];

    let pptx_data = create_pptx_with_content("Text Formatting", slides)?;
    fs::write("examples/output/text_formatting.pptx", pptx_data)?;
    Ok(())
}

fn create_shapes_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Shape Types")
            .add_bullet("Rectangle - basic rectangular shape")
            .add_bullet("Circle - round elliptical shape")
            .add_bullet("Triangle - three-sided polygon")
            .add_bullet("Diamond - rotated square")
            .add_bullet("Arrow - directional indicator")
            .add_bullet("Star - five-pointed star")
            .add_bullet("Hexagon - six-sided polygon"),
        SlideContent::new("Shape Properties")
            .add_bullet("Fill colors - solid color fills")
            .add_bullet("Transparency - adjustable opacity")
            .add_bullet("Borders - customizable lines")
            .add_bullet("Text - add text inside shapes")
            .add_bullet("Positioning - precise placement")
            .add_bullet("Sizing - flexible dimensions"),
        SlideContent::new("Shape Examples")
            .add_bullet("Rectangle: 2x1 inch blue box")
            .add_bullet("Circle: 1 inch red circle")
            .add_bullet("Triangle: green triangle with border")
            .add_bullet("Diamond: yellow diamond with text")
            .add_bullet("Arrow: orange arrow pointing right"),
    ];

    let pptx_data = create_pptx_with_content("Shape Demonstrations", slides)?;
    fs::write("examples/output/shapes_demo.pptx", pptx_data)?;
    Ok(())
}

fn create_tables_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Table Basics")
            .add_bullet("Tables organize data in rows and columns")
            .add_bullet("Headers can be formatted differently")
            .add_bullet("Cells can have background colors")
            .add_bullet("Text can be bold or styled")
            .add_bullet("Column widths are customizable"),
        SlideContent::new("Sales Data Example")
            .add_bullet("Q1 2025: $2.5M revenue")
            .add_bullet("Q2 2025: $3.1M revenue")
            .add_bullet("Q3 2025: $3.8M revenue")
            .add_bullet("Q4 2025: $4.2M revenue (projected)")
            .add_bullet("Total: $13.6M annual revenue"),
        SlideContent::new("Team Members")
            .add_bullet("Alice Johnson - Engineering Lead")
            .add_bullet("Bob Smith - Product Manager")
            .add_bullet("Carol Davis - Design Lead")
            .add_bullet("David Wilson - Marketing Manager")
            .add_bullet("Eve Martinez - Operations"),
    ];

    let pptx_data = create_pptx_with_content("Table Examples", slides)?;
    fs::write("examples/output/tables_demo.pptx", pptx_data)?;
    Ok(())
}

examples/table_text_formatting.rs (line 6)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        // Slide 1: Title
        SlideContent::new("Table Text Formatting Examples")
            .add_bullet("Demonstrating rich text content in table cells"),

        // Slide 2: Text formatting examples
        SlideContent::new("Text Formatting in Tables")
            .table(create_text_formatting_table()),

        // Slide 3: Color examples
        SlideContent::new("Text and Background Colors")
            .table(create_color_table()),

        // Slide 4: Font examples
        SlideContent::new("Font Size and Family")
            .table(create_font_table()),

        // Slide 5: Combined formatting
        SlideContent::new("Combined Formatting")
            .table(create_combined_table()),
    ];

    let pptx_data = create_pptx_with_content("Table Text Formatting", slides)?;
    std::fs::write("examples/output/table_text_formatting.pptx", pptx_data)?;
    println!("✓ Created table_text_formatting.pptx with rich text formatting examples");

    Ok(())
}

Additional examples can be found in:

• examples/test_notes.rs
• examples/alignment_test.rs
• examples/chart_generation.rs
• examples/layout_demo.rs
• examples/repair_pptx.rs
• examples/advanced_charts.rs
• examples/read_pptx.rs
• examples/complex_pptx.rs
• examples/new_elements_demo.rs
• examples/edit_presentation.rs
• examples/new_features_demo.rs
• examples/read_presentation.rs
• examples/comprehensive_demo.rs

pub fn with_transition(self, transition: TransitionType) -> Self

Set the slide transition

pub fn add_bullet(self, text: &str) -> Self

Add a bullet point with default style

Examples found in repository

examples/table_generation.rs (line 70)

fn create_simple_table_example() -> Result<(), Box<dyn std::error::Error>> {
    let table = Table::from_data(
        vec![
            vec!["Name", "Age"],
            vec!["Alice", "30"],
            vec!["Bob", "25"],
        ],
        vec![2000000, 2000000],
        500000,
        1500000,
    );

    let slides = vec![
        SlideContent::new("Simple 2x2 Table")
            .add_bullet("Table with basic structure")
            .add_bullet("Headers and data rows"),
        SlideContent::new("Table Data")
            .table(table),
    ];

    let pptx_data = create_pptx_with_content("Simple Table", slides)?;
    fs::write("examples/output/simple_table.pptx", pptx_data)?;
    Ok(())
}

fn create_styled_table_example() -> Result<(), Box<dyn std::error::Error>> {
    let header_cells = vec![
        TableCell::new("Name").bold().background_color("003366"),
        TableCell::new("Age").bold().background_color("003366"),
        TableCell::new("City").bold().background_color("003366"),
    ];
    let header_row = TableRow::new(header_cells);

    let data_rows = vec![
        TableRow::new(vec![
            TableCell::new("Alice"),
            TableCell::new("30"),
            TableCell::new("NYC"),
        ]),
        TableRow::new(vec![
            TableCell::new("Bob"),
            TableCell::new("28"),
            TableCell::new("LA"),
        ]),
        TableRow::new(vec![
            TableCell::new("Carol"),
            TableCell::new("35"),
            TableCell::new("Chicago"),
        ]),
    ];

    let table = Table::new(
        vec![vec![header_row], data_rows].concat(),
        vec![1500000, 1500000, 1500000],
        500000,
        1500000,
    );

    let slides = vec![
        SlideContent::new("Styled Table")
            .title_bold(true)
            .title_color("003366")
            .add_bullet("Table with formatting"),
        SlideContent::new("People Data")
            .table(table),
    ];

    let pptx_data = create_pptx_with_content("Styled Table", slides)?;
    fs::write("examples/output/styled_table.pptx", pptx_data)?;
    Ok(())
}

fn create_data_table_example() -> Result<(), Box<dyn std::error::Error>> {
    let header_cells = vec![
        TableCell::new("Product").bold().background_color("1F497D"),
        TableCell::new("Revenue").bold().background_color("1F497D"),
        TableCell::new("Growth").bold().background_color("1F497D"),
    ];
    let header_row = TableRow::new(header_cells);

    let data_rows = vec![
        TableRow::new(vec![
            TableCell::new("Product A"),
            TableCell::new("$100K"),
            TableCell::new("+15%"),
        ]),
        TableRow::new(vec![
            TableCell::new("Product B"),
            TableCell::new("$150K"),
            TableCell::new("+22%"),
        ]),
        TableRow::new(vec![
            TableCell::new("Product C"),
            TableCell::new("$200K"),
            TableCell::new("+18%"),
        ]),
    ];

    let table = Table::new(
        vec![vec![header_row], data_rows].concat(),
        vec![2000000, 2000000, 1500000],
        457200,
        1400000,
    );

    let slides = vec![
        SlideContent::new("Sales Data Table")
            .title_bold(true)
            .title_size(48)
            .add_bullet("Quarterly sales figures"),
        SlideContent::new("Q1 2025 Sales")
            .table(table),
        SlideContent::new("Summary")
            .content_bold(true)
            .add_bullet("Total Revenue: $450K")
            .add_bullet("Average Growth: +18.3%")
            .add_bullet("Best Performer: Product C"),
    ];

    let pptx_data = create_pptx_with_content("Sales Data", slides)?;
    fs::write("examples/output/data_table.pptx", pptx_data)?;
    Ok(())
}

fn create_multiple_tables_example() -> Result<(), Box<dyn std::error::Error>> {
    // Table 1: Employees
    let emp_header = TableRow::new(vec![
        TableCell::new("ID").bold().background_color("4F81BD"),
        TableCell::new("Name").bold().background_color("4F81BD"),
        TableCell::new("Department").bold().background_color("4F81BD"),
    ]);
    let emp_rows = vec![
        TableRow::new(vec![
            TableCell::new("001"),
            TableCell::new("Alice"),
            TableCell::new("Engineering"),
        ]),
        TableRow::new(vec![
            TableCell::new("002"),
            TableCell::new("Bob"),
            TableCell::new("Sales"),
        ]),
        TableRow::new(vec![
            TableCell::new("003"),
            TableCell::new("Carol"),
            TableCell::new("Marketing"),
        ]),
    ];
    let emp_table = Table::new(
        vec![vec![emp_header], emp_rows].concat(),
        vec![1000000, 2000000, 2000000],
        500000,
        1500000,
    );

    // Table 2: Projects
    let proj_header = TableRow::new(vec![
        TableCell::new("Project").bold().background_color("003366"),
        TableCell::new("Status").bold().background_color("003366"),
        TableCell::new("Owner").bold().background_color("003366"),
    ]);
    let proj_rows = vec![
        TableRow::new(vec![
            TableCell::new("Project A"),
            TableCell::new("In Progress"),
            TableCell::new("Alice"),
        ]),
        TableRow::new(vec![
            TableCell::new("Project B"),
            TableCell::new("Completed"),
            TableCell::new("Bob"),
        ]),
        TableRow::new(vec![
            TableCell::new("Project C"),
            TableCell::new("Planning"),
            TableCell::new("Carol"),
        ]),
    ];
    let proj_table = Table::new(
        vec![vec![proj_header], proj_rows].concat(),
        vec![2000000, 2000000, 1500000],
        500000,
        1500000,
    );

    let slides = vec![
        SlideContent::new("Multiple Tables")
            .title_bold(true)
            .add_bullet("Slide with multiple tables"),
        SlideContent::new("Table 1: Employees")
            .table(emp_table),
        SlideContent::new("Table 2: Projects")
            .table(proj_table),
        SlideContent::new("Summary")
            .add_bullet("Total Employees: 3")
            .add_bullet("Active Projects: 3")
            .add_bullet("Completion Rate: 33%"),
    ];

    let pptx_data = create_pptx_with_content("Multiple Tables", slides)?;
    fs::write("examples/output/multiple_tables.pptx", pptx_data)?;
    Ok(())
}

examples/styled_presentation.rs (line 54)

fn create_large_title_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Large Title Slide")
            .title_size(60)  // 60pt title
            .content_size(16) // 16pt content
            .add_bullet("Small bullet point 1")
            .add_bullet("Small bullet point 2")
            .add_bullet("Small bullet point 3"),
        SlideContent::new("Regular Formatting")
            .add_bullet("Default 44pt title")
            .add_bullet("Default 28pt content")
            .add_bullet("Standard formatting"),
    ];

    let pptx_data = create_pptx_with_content("Large Title Example", slides)?;
    fs::write("examples/output/large_title.pptx", pptx_data)?;
    Ok(())
}

fn create_bold_content_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Bold Content Slide")
            .title_bold(true)
            .content_bold(true)  // Make bullets bold
            .add_bullet("Bold bullet point 1")
            .add_bullet("Bold bullet point 2")
            .add_bullet("Bold bullet point 3"),
        SlideContent::new("Regular Content")
            .title_bold(true)
            .content_bold(false)  // Regular bullets
            .add_bullet("Regular bullet point 1")
            .add_bullet("Regular bullet point 2"),
    ];

    let pptx_data = create_pptx_with_content("Bold Content Example", slides)?;
    fs::write("examples/output/bold_content.pptx", pptx_data)?;
    Ok(())
}

fn create_mixed_formatting_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Title Slide")
            .title_size(52)
            .title_bold(true)
            .content_size(24)
            .content_bold(false)
            .add_bullet("Large content text")
            .add_bullet("Still readable")
            .add_bullet("Professional look"),
        SlideContent::new("Compact Slide")
            .title_size(36)
            .title_bold(false)
            .content_size(18)
            .content_bold(true)
            .add_bullet("Smaller title")
            .add_bullet("Bold content")
            .add_bullet("Tight spacing"),
        SlideContent::new("Summary")
            .title_size(48)
            .title_bold(true)
            .content_size(32)
            .content_bold(true)
            .add_bullet("Large bold text")
            .add_bullet("High impact")
            .add_bullet("Great for emphasis"),
    ];

    let pptx_data = create_pptx_with_content("Mixed Formatting Example", slides)?;
    fs::write("examples/output/mixed_formatting.pptx", pptx_data)?;
    Ok(())
}

examples/table_demo.rs (line 7)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        // Slide 1: Title
        SlideContent::new("Table Examples")
            .add_bullet("Demonstrating table rendering in PPTX"),

        // Slide 2: Simple 2x3 table
        SlideContent::new("Employee Data")
            .table(create_employee_table()),

        // Slide 3: Styled table with colors
        SlideContent::new("Sales Summary")
            .table(create_sales_table()),

        // Slide 4: Data table
        SlideContent::new("Quarterly Results")
            .table(create_quarterly_table()),
    ];

    let pptx_data = create_pptx_with_content("Table Demo", slides)?;
    std::fs::write("table_demo.pptx", pptx_data)?;
    println!("✓ Created table_demo.pptx with 4 slides containing tables");

    Ok(())
}

examples/text_styling_complete.rs (line 57)

fn create_italic_underline_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Italic Text")
            .title_italic(true)
            .add_bullet("This is italic content")
            .add_bullet("More italic text here"),
        SlideContent::new("Underlined Text")
            .title_underline(true)
            .content_underline(true)
            .add_bullet("Underlined bullet point 1")
            .add_bullet("Underlined bullet point 2"),
        SlideContent::new("Combined Effects")
            .title_italic(true)
            .title_underline(true)
            .content_italic(true)
            .add_bullet("Italic and underlined content")
            .add_bullet("Multiple effects combined"),
    ];

    let pptx_data = create_pptx_with_content("Italic and Underline", slides)?;
    fs::write("examples/output/italic_underline.pptx", pptx_data)?;
    Ok(())
}

fn create_colored_text_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Red Title")
            .title_color("FF0000")
            .add_bullet("Red title text")
            .add_bullet("Regular content"),
        SlideContent::new("Blue Content")
            .content_color("0000FF")
            .add_bullet("Blue bullet point 1")
            .add_bullet("Blue bullet point 2")
            .add_bullet("Blue bullet point 3"),
        SlideContent::new("Green Title & Content")
            .title_color("00AA00")
            .content_color("00AA00")
            .add_bullet("Green title and content")
            .add_bullet("All text is green"),
        SlideContent::new("Purple Accent")
            .title_color("9933FF")
            .add_bullet("Purple title")
            .add_bullet("Regular content"),
    ];

    let pptx_data = create_pptx_with_content("Colored Text", slides)?;
    fs::write("examples/output/colored_text.pptx", pptx_data)?;
    Ok(())
}

fn create_combined_styling_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Bold & Italic & Red")
            .title_bold(true)
            .title_italic(true)
            .title_color("FF0000")
            .title_size(52)
            .add_bullet("Regular content"),
        SlideContent::new("Underlined Blue Content")
            .content_underline(true)
            .content_color("0000FF")
            .content_bold(true)
            .add_bullet("Bold, underlined, blue bullet")
            .add_bullet("Multiple effects applied"),
        SlideContent::new("Mixed Effects")
            .title_italic(true)
            .title_color("FF6600")
            .content_bold(true)
            .content_underline(true)
            .content_color("0066FF")
            .add_bullet("Title: italic, orange")
            .add_bullet("Content: bold, underlined, blue"),
        SlideContent::new("Professional Look")
            .title_bold(true)
            .title_size(48)
            .title_color("003366")
            .content_size(24)
            .add_bullet("Clean, professional styling")
            .add_bullet("Dark blue title with bold")
            .add_bullet("Larger content text"),
    ];

    let pptx_data = create_pptx_with_content("Combined Styling", slides)?;
    fs::write("examples/output/combined_styling.pptx", pptx_data)?;
    Ok(())
}

fn create_professional_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Company Presentation")
            .title_bold(true)
            .title_size(56)
            .title_color("003366")
            .content_size(32)
            .add_bullet("2025 Annual Review"),
        SlideContent::new("Key Highlights")
            .title_bold(true)
            .title_color("003366")
            .content_bold(true)
            .content_color("0066CC")
            .add_bullet("Revenue growth: +25%")
            .add_bullet("Market expansion: 3 new regions")
            .add_bullet("Team growth: +50 employees"),
        SlideContent::new("Strategic Initiatives")
            .title_italic(true)
            .title_color("FF6600")
            .content_underline(true)
            .add_bullet("Digital transformation")
            .add_bullet("Customer experience improvement")
            .add_bullet("Sustainability focus"),
        SlideContent::new("Q1 2025 Goals")
            .title_bold(true)
            .title_underline(true)
            .title_color("003366")
            .content_bold(true)
            .add_bullet("Launch new product line")
            .add_bullet("Expand to 5 new markets")
            .add_bullet("Achieve 30% revenue growth"),
        SlideContent::new("Thank You")
            .title_bold(true)
            .title_size(60)
            .title_color("003366")
            .content_italic(true)
            .content_size(28)
            .add_bullet("Questions & Discussion"),
    ];

    let pptx_data = create_pptx_with_content("Professional Presentation", slides)?;
    fs::write("examples/output/professional.pptx", pptx_data)?;
    Ok(())
}

examples/advanced_features.rs (line 53)

fn create_text_formatting_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Text Formatting Examples")
            .add_bullet("Bold text demonstration")
            .add_bullet("Italic text demonstration")
            .add_bullet("Underlined text demonstration")
            .add_bullet("Colored text demonstration"),
        SlideContent::new("Font Sizes")
            .add_bullet("Small text (12pt)")
            .add_bullet("Normal text (18pt)")
            .add_bullet("Large text (24pt)")
            .add_bullet("Extra large text (32pt)"),
        SlideContent::new("Combined Formatting")
            .add_bullet("Bold and italic together")
            .add_bullet("Colored and underlined text")
            .add_bullet("Large bold red text")
            .add_bullet("Small italic blue text"),
    ];

    let pptx_data = create_pptx_with_content("Text Formatting", slides)?;
    fs::write("examples/output/text_formatting.pptx", pptx_data)?;
    Ok(())
}

fn create_shapes_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Shape Types")
            .add_bullet("Rectangle - basic rectangular shape")
            .add_bullet("Circle - round elliptical shape")
            .add_bullet("Triangle - three-sided polygon")
            .add_bullet("Diamond - rotated square")
            .add_bullet("Arrow - directional indicator")
            .add_bullet("Star - five-pointed star")
            .add_bullet("Hexagon - six-sided polygon"),
        SlideContent::new("Shape Properties")
            .add_bullet("Fill colors - solid color fills")
            .add_bullet("Transparency - adjustable opacity")
            .add_bullet("Borders - customizable lines")
            .add_bullet("Text - add text inside shapes")
            .add_bullet("Positioning - precise placement")
            .add_bullet("Sizing - flexible dimensions"),
        SlideContent::new("Shape Examples")
            .add_bullet("Rectangle: 2x1 inch blue box")
            .add_bullet("Circle: 1 inch red circle")
            .add_bullet("Triangle: green triangle with border")
            .add_bullet("Diamond: yellow diamond with text")
            .add_bullet("Arrow: orange arrow pointing right"),
    ];

    let pptx_data = create_pptx_with_content("Shape Demonstrations", slides)?;
    fs::write("examples/output/shapes_demo.pptx", pptx_data)?;
    Ok(())
}

fn create_tables_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Table Basics")
            .add_bullet("Tables organize data in rows and columns")
            .add_bullet("Headers can be formatted differently")
            .add_bullet("Cells can have background colors")
            .add_bullet("Text can be bold or styled")
            .add_bullet("Column widths are customizable"),
        SlideContent::new("Sales Data Example")
            .add_bullet("Q1 2025: $2.5M revenue")
            .add_bullet("Q2 2025: $3.1M revenue")
            .add_bullet("Q3 2025: $3.8M revenue")
            .add_bullet("Q4 2025: $4.2M revenue (projected)")
            .add_bullet("Total: $13.6M annual revenue"),
        SlideContent::new("Team Members")
            .add_bullet("Alice Johnson - Engineering Lead")
            .add_bullet("Bob Smith - Product Manager")
            .add_bullet("Carol Davis - Design Lead")
            .add_bullet("David Wilson - Marketing Manager")
            .add_bullet("Eve Martinez - Operations"),
    ];

    let pptx_data = create_pptx_with_content("Table Examples", slides)?;
    fs::write("examples/output/tables_demo.pptx", pptx_data)?;
    Ok(())
}

examples/table_text_formatting.rs (line 7)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        // Slide 1: Title
        SlideContent::new("Table Text Formatting Examples")
            .add_bullet("Demonstrating rich text content in table cells"),

        // Slide 2: Text formatting examples
        SlideContent::new("Text Formatting in Tables")
            .table(create_text_formatting_table()),

        // Slide 3: Color examples
        SlideContent::new("Text and Background Colors")
            .table(create_color_table()),

        // Slide 4: Font examples
        SlideContent::new("Font Size and Family")
            .table(create_font_table()),

        // Slide 5: Combined formatting
        SlideContent::new("Combined Formatting")
            .table(create_combined_table()),
    ];

    let pptx_data = create_pptx_with_content("Table Text Formatting", slides)?;
    std::fs::write("examples/output/table_text_formatting.pptx", pptx_data)?;
    println!("✓ Created table_text_formatting.pptx with rich text formatting examples");

    Ok(())
}

Additional examples can be found in:

• examples/test_notes.rs
• examples/alignment_test.rs
• examples/chart_generation.rs
• examples/layout_demo.rs
• examples/repair_pptx.rs
• examples/advanced_charts.rs
• examples/read_pptx.rs
• examples/complex_pptx.rs
• examples/new_elements_demo.rs
• examples/edit_presentation.rs
• examples/new_features_demo.rs
• examples/read_presentation.rs
• examples/comprehensive_demo.rs

pub fn add_styled_bullet(self, text: &str, style: BulletStyle) -> Self

Add a bullet point with specific style

Examples found in repository

examples/new_features_demo.rs (line 51)

fn main() -> std::result::Result<(), Box<dyn std::error::Error>> {
    // Create output directory
    std::fs::create_dir_all("examples/output")?;

    // 1. Bullet Styles Demo
    println!("Creating bullet styles demo...");
    
    // Numbered list slide
    let numbered_slide = SlideContent::new("Numbered List")
        .with_bullet_style(BulletStyle::Number)
        .add_bullet("First step")
        .add_bullet("Second step")
        .add_bullet("Third step")
        .add_bullet("Fourth step");
    
    // Lettered list slide
    let lettered_slide = SlideContent::new("Lettered List")
        .add_lettered("Option A")
        .add_lettered("Option B")
        .add_lettered("Option C");
    
    // Roman numerals slide
    let roman_slide = SlideContent::new("Roman Numerals")
        .with_bullet_style(BulletStyle::RomanUpper)
        .add_bullet("Chapter I")
        .add_bullet("Chapter II")
        .add_bullet("Chapter III");
    
    // Mixed bullets with sub-bullets
    let mixed_slide = SlideContent::new("Mixed Bullets")
        .add_bullet("Main point")
        .add_sub_bullet("Supporting detail 1")
        .add_sub_bullet("Supporting detail 2")
        .add_bullet("Another main point")
        .add_sub_bullet("More details");
    
    // Custom bullet slide
    let custom_slide = SlideContent::new("Custom Bullets")
        .add_styled_bullet("Star bullet", BulletStyle::Custom('★'))
        .add_styled_bullet("Arrow bullet", BulletStyle::Custom('→'))
        .add_styled_bullet("Check bullet", BulletStyle::Custom('✓'))
        .add_styled_bullet("Diamond bullet", BulletStyle::Custom('◆'));
    
    let bullet_demo = pptx!("Bullet Styles Demo")
        .title_slide("Bullet Styles - Demonstrating various list formats")
        .content_slide(numbered_slide)
        .content_slide(lettered_slide)
        .content_slide(roman_slide)
        .content_slide(mixed_slide)
        .content_slide(custom_slide)
        .build()?;
    
    std::fs::write("examples/output/bullet_styles.pptx", bullet_demo)?;
    println!("  ✓ Created examples/output/bullet_styles.pptx");

    // 2. Text Formatting Demo
    println!("Creating text formatting demo...");
    
    let text_demo = pptx!("Text Formatting Demo")
        .title_slide("Text Formatting - Strikethrough, highlight, subscript, superscript")
        .slide("Text Styles", &[
            "Normal text for comparison",
            "This demonstrates various formatting options",
            "Use TextFormat for rich text styling",
        ])
        .slide("Font Size Presets", &[
            &format!("TITLE: {}pt - For main titles", font_sizes::TITLE),
            &format!("SUBTITLE: {}pt - For subtitles", font_sizes::SUBTITLE),
            &format!("HEADING: {}pt - For section headers", font_sizes::HEADING),
            &format!("BODY: {}pt - For regular content", font_sizes::BODY),
            &format!("SMALL: {}pt - For smaller text", font_sizes::SMALL),
            &format!("CAPTION: {}pt - For captions", font_sizes::CAPTION),
        ])
        .slide("Text Effects", &[
            "Strikethrough: For deleted text",
            "Highlight: For emphasized text",
            "Subscript: H₂O style formatting",
            "Superscript: x² style formatting",
        ])
        .build()?;
    
    std::fs::write("examples/output/text_formatting.pptx", text_demo)?;
    println!("  ✓ Created examples/output/text_formatting.pptx");

    // 3. Image from Base64 Demo
    println!("Creating image demo...");
    
    // 1x1 red PNG pixel in base64
    let red_pixel_base64 = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8DwHwAFBQIAX8jx0gAAAABJRU5ErkJggg==";
    
    // Create image from base64
    let img = ImageBuilder::from_base64(red_pixel_base64, inches(2.0), inches(2.0), "PNG")
        .position(inches(4.0), inches(3.0))
        .build();
    
    let image_slide = SlideContent::new("Image from Base64")
        .add_bullet("Images can be loaded from base64 encoded data")
        .add_bullet("Useful for embedding images without file access")
        .add_bullet("Supports PNG, JPEG, GIF formats")
        .add_image(img);
    
    let image_demo = pptx!("Image Features Demo")
        .title_slide("Image Features - Loading images from various sources")
        .content_slide(image_slide)
        .slide("Image Sources", &[
            "Image::new(filename) - From file path",
            "Image::from_base64(data) - From base64 string",
            "Image::from_bytes(data) - From raw bytes",
            "ImageBuilder for fluent API",
        ])
        .build()?;
    
    std::fs::write("examples/output/image_features.pptx", image_demo)?;
    println!("  ✓ Created examples/output/image_features.pptx");

    // 4. Theme Colors Demo
    println!("Creating themes demo...");
    
    let all_themes = themes::all();
    let theme_info: Vec<String> = all_themes.iter().map(|t| {
        format!("{}: Primary={}, Accent={}", t.name, t.primary, t.accent)
    }).collect();
    
    let themes_demo = pptx!("Theme Colors Demo")
        .title_slide("Theme Colors - Predefined color palettes")
        .slide("Available Themes", &theme_info.iter().map(|s| s.as_str()).collect::<Vec<_>>())
        .slide("Color Constants", &[
            &format!("Material Red: {}", colors::MATERIAL_RED),
            &format!("Material Blue: {}", colors::MATERIAL_BLUE),
            &format!("Material Green: {}", colors::MATERIAL_GREEN),
            &format!("Carbon Blue 60: {}", colors::CARBON_BLUE_60),
            &format!("Carbon Gray 100: {}", colors::CARBON_GRAY_100),
        ])
        .build()?;
    
    std::fs::write("examples/output/themes_demo.pptx", themes_demo)?;
    println!("  ✓ Created examples/output/themes_demo.pptx");

    // 5. Complete Feature Showcase
    println!("Creating complete feature showcase...");
    
    let showcase = pptx!("ppt-rs v0.2.1 Features")
        .title_slide("New Features in ppt-rs v0.2.1")
        .slide("Bullet Formatting", &[
            "BulletStyle::Number - 1, 2, 3...",
            "BulletStyle::LetterLower/Upper - a, b, c / A, B, C",
            "BulletStyle::RomanLower/Upper - i, ii, iii / I, II, III",
            "BulletStyle::Custom(char) - Any custom character",
            "Sub-bullets with indentation",
        ])
        .slide("Text Enhancements", &[
            "TextFormat::strikethrough() - Strike through text",
            "TextFormat::highlight(color) - Background highlight",
            "TextFormat::subscript() - H₂O style",
            "TextFormat::superscript() - x² style",
            "font_sizes module with presets",
        ])
        .slide("Image Loading", &[
            "Image::from_base64() - Base64 encoded images",
            "Image::from_bytes() - Raw byte arrays",
            "ImageSource enum for flexible handling",
            "Built-in base64 decoder",
        ])
        .slide("Templates", &[
            "templates::business_proposal()",
            "templates::status_report()",
            "templates::training_material()",
            "templates::technical_doc()",
            "templates::simple()",
        ])
        .slide("Themes & Colors", &[
            "themes::CORPORATE, MODERN, VIBRANT, DARK",
            "themes::NATURE, TECH, CARBON",
            "colors module with Material Design colors",
            "colors module with IBM Carbon colors",
        ])
        .build()?;
    
    std::fs::write("examples/output/feature_showcase.pptx", showcase)?;
    println!("  ✓ Created examples/output/feature_showcase.pptx");

    println!("\n✅ All demos created successfully!");
    println!("   Check examples/output/ for the generated files.");
    
    Ok(())
}

examples/comprehensive_demo.rs (line 907)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    println!("╔══════════════════════════════════════════════════════════════╗");
    println!("║       PPTX-RS Element Showcase - Complete Coverage           ║");
    println!("╚══════════════════════════════════════════════════════════════╝\n");

    let mut slides = Vec::new();

    // =========================================================================
    // SLIDE 1: CenteredTitle Layout + Title Formatting
    // =========================================================================
    println!("📐 Slide 1: CenteredTitle Layout + Title Formatting");
    slides.push(
        SlideContent::new("PPTX-RS Element Showcase")
            .layout(SlideLayout::CenteredTitle)
            .title_size(54)
            .title_bold(true)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 2: TitleOnly Layout
    // =========================================================================
    println!("📐 Slide 2: TitleOnly Layout");
    slides.push(
        SlideContent::new("Section: Slide Layouts")
            .layout(SlideLayout::TitleOnly)
            .title_size(48)
            .title_bold(true)
            .title_color("C0504D")
    );

    // =========================================================================
    // SLIDE 3: TitleAndContent Layout + All Text Formatting
    // =========================================================================
    println!("📝 Slide 3: TitleAndContent + Text Formatting");
    slides.push(
        SlideContent::new("Text Formatting Options")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .title_italic(true)
            .title_underline(true)
            .title_size(44)
            .add_bullet("Normal text (default)")
            .add_bullet("Bold content text")
            .add_bullet("Italic content text")
            .add_bullet("Underlined content")
            .add_bullet("Custom font size (28pt)")
            .add_bullet("Custom color (#4F81BD)")
            .content_bold(true)
            .content_italic(true)
            .content_underline(true)
            .content_size(28)
            .content_color("4F81BD")
    );

    // =========================================================================
    // SLIDE 4: TitleAndBigContent Layout
    // =========================================================================
    println!("📐 Slide 4: TitleAndBigContent Layout");
    slides.push(
        SlideContent::new("Key Highlights")
            .layout(SlideLayout::TitleAndBigContent)
            .title_color("1F497D")
            .add_bullet("Large content area for emphasis")
            .add_bullet("Perfect for key messages")
            .add_bullet("Smaller title, bigger content")
            .content_bold(true)
            .content_size(32)
    );

    // =========================================================================
    // SLIDE 5: TwoColumn Layout
    // =========================================================================
    println!("📐 Slide 5: TwoColumn Layout");
    slides.push(
        SlideContent::new("Two Column Comparison")
            .layout(SlideLayout::TwoColumn)
            .title_color("1F497D")
            .add_bullet("Left Column Item 1")
            .add_bullet("Left Column Item 2")
            .add_bullet("Left Column Item 3")
            .add_bullet("Right Column Item 1")
            .add_bullet("Right Column Item 2")
            .add_bullet("Right Column Item 3")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 6: Blank Layout
    // =========================================================================
    println!("📐 Slide 6: Blank Layout");
    slides.push(
        SlideContent::new("")
            .layout(SlideLayout::Blank)
    );

    // =========================================================================
    // SLIDE 7: Table with All Cell Styling Options
    // =========================================================================
    println!("📊 Slide 7: Table with Cell Styling");
    let styled_table = TableBuilder::new(vec![1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Header 1").bold().background_color("1F497D"),
            TableCell::new("Header 2").bold().background_color("4F81BD"),
            TableCell::new("Header 3").bold().background_color("8064A2"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Bold Cell").bold(),
            TableCell::new("Normal Cell"),
            TableCell::new("Colored").background_color("9BBB59"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Red BG").background_color("C0504D"),
            TableCell::new("Green BG").background_color("9BBB59"),
            TableCell::new("Blue BG").background_color("4F81BD"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Row 3 Col 1"),
            TableCell::new("Row 3 Col 2"),
            TableCell::new("Row 3 Col 3").bold().background_color("F79646"),
        ]))
        .position(500000, 1800000)
        .build();
    
    slides.push(
        SlideContent::new("Table with Cell Styling")
            .table(styled_table)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 8: Charts (Bar, Line, Pie)
    // =========================================================================
    println!("📈 Slide 8: Chart Types");
    
    // Create chart data structures (for demonstration)
    let _bar_chart = ChartBuilder::new("Sales by Region", ChartType::Bar)
        .categories(vec!["North", "South", "East", "West"])
        .add_series(ChartSeries::new("2023", vec![100.0, 80.0, 120.0, 90.0]))
        .add_series(ChartSeries::new("2024", vec![120.0, 95.0, 140.0, 110.0]))
        .build();
    
    let _line_chart = ChartBuilder::new("Monthly Trend", ChartType::Line)
        .categories(vec!["Jan", "Feb", "Mar", "Apr", "May", "Jun"])
        .add_series(ChartSeries::new("Revenue", vec![10.0, 12.0, 15.0, 14.0, 18.0, 22.0]))
        .build();
    
    let _pie_chart = ChartBuilder::new("Market Share", ChartType::Pie)
        .categories(vec!["Product A", "Product B", "Product C", "Others"])
        .add_series(ChartSeries::new("Share", vec![40.0, 30.0, 20.0, 10.0]))
        .build();
    
    slides.push(
        SlideContent::new("Chart Types: Bar, Line, Pie")
            .with_chart()
            .title_color("1F497D")
            .add_bullet("Bar Chart: Compare categories")
            .add_bullet("Line Chart: Show trends over time")
            .add_bullet("Pie Chart: Show proportions")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 9: Shapes with Different Fills
    // =========================================================================
    println!("🔷 Slide 9: Shapes with Fills");
    
    let rect = Shape::new(ShapeType::Rectangle, 500000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("4F81BD"))
        .with_text("Rectangle");
    
    let ellipse = Shape::new(ShapeType::Ellipse, 3000000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("9BBB59"))
        .with_text("Ellipse");
    
    let rounded = Shape::new(ShapeType::RoundedRectangle, 5500000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("C0504D"))
        .with_text("Rounded");
    
    let triangle = Shape::new(ShapeType::Triangle, 1500000, 3000000, 1500000, 1200000)
        .with_fill(ShapeFill::new("8064A2"))
        .with_text("Triangle");
    
    let diamond = Shape::new(ShapeType::Diamond, 4000000, 3000000, 1500000, 1200000)
        .with_fill(ShapeFill::new("F79646"))
        .with_text("Diamond");
    
    slides.push(
        SlideContent::new("Shape Types with Color Fills")
            .add_shape(rect)
            .add_shape(ellipse)
            .add_shape(rounded)
            .add_shape(triangle)
            .add_shape(diamond)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 10: Gradient Fills (NEW)
    // =========================================================================
    println!("🌈 Slide 10: Gradient Fills");
    
    // Horizontal gradient
    let gradient_h = Shape::new(ShapeType::Rectangle, 500000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("1565C0", "42A5F5", GradientDirection::Horizontal))
        .with_text("Horizontal");
    
    // Vertical gradient
    let gradient_v = Shape::new(ShapeType::Rectangle, 3200000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("2E7D32", "81C784", GradientDirection::Vertical))
        .with_text("Vertical");
    
    // Diagonal gradient
    let gradient_d = Shape::new(ShapeType::RoundedRectangle, 5900000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("C62828", "EF9A9A", GradientDirection::DiagonalDown))
        .with_text("Diagonal");
    
    // Three-color gradient
    let gradient_3 = Shape::new(ShapeType::Ellipse, 1800000, 3200000, 2500000, 1200000)
        .with_gradient(GradientFill::three_color("FF6F00", "FFC107", "FFEB3B", GradientDirection::Horizontal))
        .with_text("3-Color");
    
    // Custom angle gradient
    let gradient_angle = Shape::new(ShapeType::RoundedRectangle, 4800000, 3200000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("7B1FA2", "E1BEE7", GradientDirection::Angle(135)))
        .with_text("135° Angle");
    
    slides.push(
        SlideContent::new("Gradient Fills - Multiple Directions")
            .add_shape(gradient_h)
            .add_shape(gradient_v)
            .add_shape(gradient_d)
            .add_shape(gradient_3)
            .add_shape(gradient_angle)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 11: Transparency (NEW)
    // =========================================================================
    println!("👻 Slide 11: Transparency Effects");
    
    // Base shape (fully opaque)
    let base = Shape::new(ShapeType::Rectangle, 1000000, 1800000, 3000000, 2000000)
        .with_fill(ShapeFill::new("1565C0"))
        .with_text("Base (100%)");
    
    // 25% transparent overlay
    let trans_25 = Shape::new(ShapeType::Rectangle, 2000000, 2200000, 2500000, 1500000)
        .with_fill(ShapeFill::new("F44336").with_transparency(25))
        .with_line(ShapeLine::new("B71C1C", 25400))
        .with_text("25% Transparent");
    
    // 50% transparent overlay
    let trans_50 = Shape::new(ShapeType::Ellipse, 4500000, 1800000, 2500000, 2000000)
        .with_fill(ShapeFill::new("4CAF50").with_transparency(50))
        .with_line(ShapeLine::new("1B5E20", 25400))
        .with_text("50% Transparent");
    
    // 75% transparent overlay
    let trans_75 = Shape::new(ShapeType::RoundedRectangle, 5500000, 2500000, 2500000, 1500000)
        .with_fill(ShapeFill::new("FF9800").with_transparency(75))
        .with_line(ShapeLine::new("E65100", 25400))
        .with_text("75% Transparent");
    
    slides.push(
        SlideContent::new("Transparency Effects - Overlapping Shapes")
            .add_shape(base)
            .add_shape(trans_25)
            .add_shape(trans_50)
            .add_shape(trans_75)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 12: Styled Connectors (NEW)
    // =========================================================================
    println!("🔗 Slide 12: Styled Connectors");
    
    // Create shapes to connect
    let box1 = Shape::new(ShapeType::RoundedRectangle, 500000, 1800000, 1800000, 800000)
        .with_id(100)
        .with_fill(ShapeFill::new("1565C0"))
        .with_text("Start");
    
    let box2 = Shape::new(ShapeType::RoundedRectangle, 3500000, 1800000, 1800000, 800000)
        .with_id(101)
        .with_fill(ShapeFill::new("2E7D32"))
        .with_text("Process");
    
    let box3 = Shape::new(ShapeType::RoundedRectangle, 6500000, 1800000, 1800000, 800000)
        .with_id(102)
        .with_fill(ShapeFill::new("C62828"))
        .with_text("End");
    
    // Straight connector with arrow
    let conn1 = Connector::straight(2300000, 2200000, 3500000, 2200000)
        .with_line(ConnectorLine::new("1565C0", 25400))
        .with_end_arrow(ArrowType::Triangle)
        .with_arrow_size(ArrowSize::Large);
    
    // Elbow connector with stealth arrow
    let conn2 = Connector::elbow(5300000, 2200000, 6500000, 2200000)
        .with_line(ConnectorLine::new("2E7D32", 38100).with_dash(LineDash::Dash))
        .with_end_arrow(ArrowType::Stealth)
        .with_arrow_size(ArrowSize::Medium);
    
    // Curved connector examples
    let box4 = Shape::new(ShapeType::Ellipse, 1000000, 3200000, 1500000, 800000)
        .with_id(103)
        .with_fill(ShapeFill::new("7B1FA2"))
        .with_text("A");
    
    let box5 = Shape::new(ShapeType::Ellipse, 4000000, 3200000, 1500000, 800000)
        .with_id(104)
        .with_fill(ShapeFill::new("00838F"))
        .with_text("B");
    
    let box6 = Shape::new(ShapeType::Ellipse, 7000000, 3200000, 1500000, 800000)
        .with_id(105)
        .with_fill(ShapeFill::new("EF6C00"))
        .with_text("C");
    
    // Curved connector with diamond arrow
    let conn3 = Connector::curved(2500000, 3600000, 4000000, 3600000)
        .with_line(ConnectorLine::new("7B1FA2", 19050).with_dash(LineDash::DashDot))
        .with_arrows(ArrowType::Oval, ArrowType::Diamond);
    
    // Dotted connector
    let conn4 = Connector::straight(5500000, 3600000, 7000000, 3600000)
        .with_line(ConnectorLine::new("00838F", 12700).with_dash(LineDash::Dot))
        .with_end_arrow(ArrowType::Open);
    
    slides.push(
        SlideContent::new("Styled Connectors - Types, Arrows, Dashes")
            .add_shape(box1)
            .add_shape(box2)
            .add_shape(box3)
            .add_shape(box4)
            .add_shape(box5)
            .add_shape(box6)
            .add_connector(conn1)
            .add_connector(conn2)
            .add_connector(conn3)
            .add_connector(conn4)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 13: Images
    // =========================================================================
    println!("🖼️  Slide 13: Image Placeholders");
    
    let img1 = Image::new("logo.png", 2500000, 1800000, "png")
        .position(500000, 1600000);
    let img2 = Image::new("photo.jpg", 2500000, 1800000, "jpg")
        .position(3500000, 1600000);
    let img3 = Image::new("diagram.png", 2000000, 1800000, "png")
        .position(6500000, 1600000);
    
    slides.push(
        SlideContent::new("Image Placeholders")
            .add_image(img1)
            .add_image(img2)
            .add_image(img3)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 11: Advanced Table with Borders & Alignment (NEW)
    // =========================================================================
    println!("📊 Slide 11: Advanced Table (borders, alignment, merged cells)");
    
    // Build advanced table using generator's TableBuilder with alignment
    let advanced_table = TableBuilder::new(vec![2000000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2024 Financial Report").bold().background_color("1F4E79").text_color("FFFFFF").align_center().font_size(14),
            TableCell::new("").background_color("1F4E79"),
            TableCell::new("").background_color("1F4E79"),
            TableCell::new("").background_color("1F4E79"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Category").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Revenue").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Expenses").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Profit").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Product Sales").text_color("000000").align_left(),
            TableCell::new("$1,250,000").text_color("2E7D32").align_right(),
            TableCell::new("$450,000").text_color("C62828").align_right(),
            TableCell::new("$800,000").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Services").text_color("000000").align_left(),
            TableCell::new("$890,000").text_color("2E7D32").align_right(),
            TableCell::new("$320,000").text_color("C62828").align_right(),
            TableCell::new("$570,000").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Total").bold().background_color("E7E6E6").text_color("000000").align_left(),
            TableCell::new("$2,140,000").bold().background_color("E7E6E6").text_color("000000").align_right(),
            TableCell::new("$770,000").bold().background_color("E7E6E6").text_color("000000").align_right(),
            TableCell::new("$1,370,000").bold().background_color("C6EFCE").text_color("006100").align_right(),
        ]))
        .position(300000, 1600000)
        .build();
    
    slides.push(
        SlideContent::new("Financial Report - Advanced Table")
            .table(advanced_table)
            .title_color("1F4E79")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 12: Comparison Matrix Table (NEW)
    // =========================================================================
    println!("📊 Slide 12: Comparison Matrix Table");
    
    let comparison_table = TableBuilder::new(vec![2000000, 1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Feature").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Basic").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Pro").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Enterprise").bold().background_color("4472C4").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Storage").text_color("000000"),
            TableCell::new("5 GB").text_color("000000"),
            TableCell::new("50 GB").text_color("000000"),
            TableCell::new("Unlimited").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Users").text_color("000000"),
            TableCell::new("1").text_color("000000"),
            TableCell::new("10").text_color("000000"),
            TableCell::new("Unlimited").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Support").text_color("000000"),
            TableCell::new("Email").text_color("000000"),
            TableCell::new("24/7 Chat").text_color("000000"),
            TableCell::new("Dedicated").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("API Access").text_color("000000"),
            TableCell::new("No").text_color("C62828"),
            TableCell::new("Yes").text_color("2E7D32"),
            TableCell::new("Yes + Priority").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Price/month").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$9").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$29").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$99").bold().background_color("F2F2F2").text_color("000000"),
        ]))
        .position(500000, 1600000)
        .build();
    
    slides.push(
        SlideContent::new("Pricing Comparison Matrix")
            .table(comparison_table)
            .title_color("4472C4")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 13: Process Flow with Shapes (NEW - SmartArt-like)
    // =========================================================================
    println!("🔷 Slide 13: Process Flow (SmartArt-style)");
    
    // Create process flow using shapes
    let step1 = Shape::new(ShapeType::RoundedRectangle, 300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("1. Research");
    let arrow1 = Shape::new(ShapeType::RightArrow, 1800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step2 = Shape::new(ShapeType::RoundedRectangle, 2300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("2. Design");
    let arrow2 = Shape::new(ShapeType::RightArrow, 3800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step3 = Shape::new(ShapeType::RoundedRectangle, 4300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("3. Develop");
    let arrow3 = Shape::new(ShapeType::RightArrow, 5800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step4 = Shape::new(ShapeType::RoundedRectangle, 6300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("5B9BD5"))
        .with_text("4. Deploy");
    
    slides.push(
        SlideContent::new("Development Process Flow")
            .add_shape(step1)
            .add_shape(arrow1)
            .add_shape(step2)
            .add_shape(arrow2)
            .add_shape(step3)
            .add_shape(arrow3)
            .add_shape(step4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 14: Organization Chart with Shapes (NEW)
    // =========================================================================
    println!("🔷 Slide 14: Organization Chart");
    
    // CEO at top
    let ceo = Shape::new(ShapeType::RoundedRectangle, 3500000, 1400000, 2000000, 600000)
        .with_fill(ShapeFill::new("1F4E79"))
        .with_text("CEO");
    
    // Vertical line from CEO
    let line1 = Shape::new(ShapeType::Rectangle, 4450000, 2000000, 100000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // Horizontal connector
    let hline = Shape::new(ShapeType::Rectangle, 1950000, 2400000, 5100000, 50000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // CTO, CFO, COO
    let cto = Shape::new(ShapeType::RoundedRectangle, 1000000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("CTO");
    let cfo = Shape::new(ShapeType::RoundedRectangle, 3600000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("CFO");
    let coo = Shape::new(ShapeType::RoundedRectangle, 6200000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("COO");
    
    // Vertical lines to departments
    let vline1 = Shape::new(ShapeType::Rectangle, 1850000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let vline2 = Shape::new(ShapeType::Rectangle, 4450000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let vline3 = Shape::new(ShapeType::Rectangle, 7050000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // Teams under CTO
    let eng = Shape::new(ShapeType::Rectangle, 500000, 3300000, 1200000, 400000)
        .with_fill(ShapeFill::new("BDD7EE"))
        .with_text("Engineering");
    let product = Shape::new(ShapeType::Rectangle, 1800000, 3300000, 1200000, 400000)
        .with_fill(ShapeFill::new("BDD7EE"))
        .with_text("Product");
    
    slides.push(
        SlideContent::new("Organization Structure")
            .add_shape(ceo)
            .add_shape(line1)
            .add_shape(hline)
            .add_shape(cto)
            .add_shape(cfo)
            .add_shape(coo)
            .add_shape(vline1)
            .add_shape(vline2)
            .add_shape(vline3)
            .add_shape(eng)
            .add_shape(product)
            .title_color("1F4E79")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 15: PDCA Cycle Diagram (NEW)
    // =========================================================================
    println!("🔷 Slide 15: PDCA Cycle Diagram");
    
    // Four quadrants for PDCA
    let plan = Shape::new(ShapeType::RoundedRectangle, 1500000, 1600000, 2500000, 1500000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("PLAN\n\nDefine goals\nand strategy");
    let do_box = Shape::new(ShapeType::RoundedRectangle, 4500000, 1600000, 2500000, 1500000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("DO\n\nImplement\nthe plan");
    let check = Shape::new(ShapeType::RoundedRectangle, 4500000, 3300000, 2500000, 1500000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("CHECK\n\nMeasure\nresults");
    let act = Shape::new(ShapeType::RoundedRectangle, 1500000, 3300000, 2500000, 1500000)
        .with_fill(ShapeFill::new("FFC000"))
        .with_text("ACT\n\nAdjust and\nimprove");
    
    // Arrows between quadrants
    let arr1 = Shape::new(ShapeType::RightArrow, 4100000, 2100000, 300000, 300000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr2 = Shape::new(ShapeType::DownArrow, 5600000, 3200000, 300000, 200000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr3 = Shape::new(ShapeType::LeftArrow, 4100000, 3800000, 300000, 300000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr4 = Shape::new(ShapeType::UpArrow, 2600000, 3200000, 300000, 200000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    slides.push(
        SlideContent::new("PDCA Continuous Improvement Cycle")
            .add_shape(plan)
            .add_shape(do_box)
            .add_shape(check)
            .add_shape(act)
            .add_shape(arr1)
            .add_shape(arr2)
            .add_shape(arr3)
            .add_shape(arr4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 16: Pyramid Diagram (Maslow's Hierarchy) (NEW)
    // =========================================================================
    println!("🔷 Slide 16: Pyramid Diagram");
    
    // Build pyramid from bottom to top
    let level5 = Shape::new(ShapeType::Trapezoid, 500000, 4000000, 8000000, 600000)
        .with_fill(ShapeFill::new("C00000"))
        .with_text("Physiological Needs - Food, Water, Shelter");
    let level4 = Shape::new(ShapeType::Trapezoid, 1000000, 3400000, 7000000, 600000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Safety Needs - Security, Stability");
    let level3 = Shape::new(ShapeType::Trapezoid, 1500000, 2800000, 6000000, 600000)
        .with_fill(ShapeFill::new("FFC000"))
        .with_text("Love & Belonging - Relationships");
    let level2 = Shape::new(ShapeType::Trapezoid, 2000000, 2200000, 5000000, 600000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Esteem - Achievement, Respect");
    let level1 = Shape::new(ShapeType::Triangle, 2500000, 1500000, 4000000, 700000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Self-Actualization");
    
    slides.push(
        SlideContent::new("Maslow's Hierarchy of Needs")
            .add_shape(level5)
            .add_shape(level4)
            .add_shape(level3)
            .add_shape(level2)
            .add_shape(level1)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 17: Venn Diagram (NEW)
    // =========================================================================
    println!("🔷 Slide 17: Venn Diagram");
    
    // Three overlapping circles
    let circle1 = Shape::new(ShapeType::Ellipse, 1500000, 1800000, 3000000, 3000000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Skills");
    let circle2 = Shape::new(ShapeType::Ellipse, 3500000, 1800000, 3000000, 3000000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Passion");
    let circle3 = Shape::new(ShapeType::Ellipse, 2500000, 3200000, 3000000, 3000000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Market Need");
    
    // Center label
    let center = Shape::new(ShapeType::Ellipse, 3200000, 2800000, 1600000, 800000)
        .with_fill(ShapeFill::new("FFFFFF"))
        .with_text("IKIGAI");
    
    slides.push(
        SlideContent::new("Finding Your Ikigai - Venn Diagram")
            .add_shape(circle1)
            .add_shape(circle2)
            .add_shape(circle3)
            .add_shape(center)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 18: Timeline/Roadmap (NEW)
    // =========================================================================
    println!("📊 Slide 18: Project Timeline");
    
    let timeline_table = TableBuilder::new(vec![1500000, 1500000, 1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q2 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q3 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q4 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q1 2025").bold().background_color("4472C4").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Research\n& Planning").background_color("BDD7EE").text_color("1F497D"),
            TableCell::new("Design\nPhase").background_color("BDD7EE").text_color("1F497D"),
            TableCell::new("Development\nSprint 1-3").background_color("C6EFCE").text_color("006100"),
            TableCell::new("Testing\n& QA").background_color("FCE4D6").text_color("C65911"),
            TableCell::new("Launch\n& Support").background_color("E2EFDA").text_color("375623"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("✓ Complete").bold().text_color("2E7D32"),
            TableCell::new("✓ Complete").bold().text_color("2E7D32"),
            TableCell::new("In Progress").text_color("ED7D31"),
            TableCell::new("Planned").text_color("7F7F7F"),
            TableCell::new("Planned").text_color("7F7F7F"),
        ]))
        .position(300000, 2000000)
        .build();
    
    slides.push(
        SlideContent::new("Project Roadmap 2024-2025")
            .table(timeline_table)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 19: Dashboard Summary (NEW)
    // =========================================================================
    println!("🔷 Slide 19: Dashboard with KPIs");
    
    // KPI boxes
    let kpi1 = Shape::new(ShapeType::RoundedRectangle, 300000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Revenue\n\n$2.14M\n+15% YoY");
    let kpi2 = Shape::new(ShapeType::RoundedRectangle, 2500000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Customers\n\n12,450\n+22% YoY");
    let kpi3 = Shape::new(ShapeType::RoundedRectangle, 4700000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("NPS Score\n\n72\n+8 pts");
    let kpi4 = Shape::new(ShapeType::RoundedRectangle, 6900000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("5B9BD5"))
        .with_text("Retention\n\n94%\n+3% YoY");
    
    // Status indicators
    let status1 = Shape::new(ShapeType::Ellipse, 1800000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    let status2 = Shape::new(ShapeType::Ellipse, 4000000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    let status3 = Shape::new(ShapeType::Ellipse, 6200000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("FFC000"));
    let status4 = Shape::new(ShapeType::Ellipse, 8400000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    
    slides.push(
        SlideContent::new("Executive Dashboard - Q1 2024")
            .add_shape(kpi1)
            .add_shape(kpi2)
            .add_shape(kpi3)
            .add_shape(kpi4)
            .add_shape(status1)
            .add_shape(status2)
            .add_shape(status3)
            .add_shape(status4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 20: Summary Slide (NEW)
    // =========================================================================
    println!("📝 Slide 20: Summary with Speaker Notes");
    
    slides.push(
        SlideContent::new("Summary & Next Steps")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Completed: Research, Design, Initial Development")
            .add_bullet("In Progress: Sprint 3 Development")
            .add_bullet("Next: QA Testing Phase (Q4 2024)")
            .add_bullet("Launch Target: Q1 2025")
            .add_bullet("Key Risks: Resource constraints, Timeline pressure")
            .content_size(24)
            .notes("Speaker Notes:\n\n1. Emphasize the progress made\n2. Highlight key achievements\n3. Address any concerns about timeline\n4. Open for Q&A")
    );

    // =========================================================================
    // SLIDE 21: Bullet Styles (NEW v0.2.1)
    // =========================================================================
    println!("🔢 Slide 21: Bullet Styles (NEW)");
    
    // Numbered list
    slides.push(
        SlideContent::new("Bullet Styles - Numbered List")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .with_bullet_style(BulletStyle::Number)
            .add_bullet("First numbered item")
            .add_bullet("Second numbered item")
            .add_bullet("Third numbered item")
            .add_bullet("Fourth numbered item")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 22: Lettered Lists (NEW v0.2.1)
    // =========================================================================
    println!("🔤 Slide 22: Lettered Lists (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Lettered Lists")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_lettered("Option A - First choice")
            .add_lettered("Option B - Second choice")
            .add_lettered("Option C - Third choice")
            .add_lettered("Option D - Fourth choice")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 23: Roman Numerals (NEW v0.2.1)
    // =========================================================================
    println!("🏛️ Slide 23: Roman Numerals (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Roman Numerals")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .with_bullet_style(BulletStyle::RomanUpper)
            .add_bullet("Chapter I - Introduction")
            .add_bullet("Chapter II - Background")
            .add_bullet("Chapter III - Methodology")
            .add_bullet("Chapter IV - Results")
            .add_bullet("Chapter V - Conclusion")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 24: Custom Bullets (NEW v0.2.1)
    // =========================================================================
    println!("⭐ Slide 24: Custom Bullets (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Custom Characters")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_styled_bullet("Star bullet point", BulletStyle::Custom('★'))
            .add_styled_bullet("Arrow bullet point", BulletStyle::Custom('→'))
            .add_styled_bullet("Check bullet point", BulletStyle::Custom('✓'))
            .add_styled_bullet("Diamond bullet point", BulletStyle::Custom('◆'))
            .add_styled_bullet("Heart bullet point", BulletStyle::Custom('♥'))
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 25: Sub-bullets / Hierarchy (NEW v0.2.1)
    // =========================================================================
    println!("📊 Slide 25: Sub-bullets Hierarchy (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Hierarchical Lists")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Main Topic 1")
            .add_sub_bullet("Supporting detail A")
            .add_sub_bullet("Supporting detail B")
            .add_bullet("Main Topic 2")
            .add_sub_bullet("Supporting detail C")
            .add_sub_bullet("Supporting detail D")
            .add_bullet("Main Topic 3")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 26: Text Enhancements (NEW v0.2.1)
    // =========================================================================
    println!("✏️ Slide 26: Text Enhancements (NEW)");
    
    // Use BulletPoint with formatting
    let strikethrough_bullet = BulletPoint::new("Strikethrough: This text is crossed out").strikethrough();
    let highlight_bullet = BulletPoint::new("Highlight: Yellow background for emphasis").highlight("FFFF00");
    let subscript_bullet = BulletPoint::new("Subscript: H₂O - for chemical formulas").subscript();
    let superscript_bullet = BulletPoint::new("Superscript: x² - for math expressions").superscript();
    let bold_colored = BulletPoint::new("Combined: Bold + Red color").bold().color("FF0000");
    
    let mut text_enhancements_slide = SlideContent::new("Text Enhancements - New Formatting")
        .layout(SlideLayout::TitleAndContent)
        .title_color("1F497D")
        .title_bold(true)
        .content_size(24);
    text_enhancements_slide.bullets.push(strikethrough_bullet);
    text_enhancements_slide.bullets.push(highlight_bullet);
    text_enhancements_slide.bullets.push(subscript_bullet);
    text_enhancements_slide.bullets.push(superscript_bullet);
    text_enhancements_slide.bullets.push(bold_colored);
    
    slides.push(text_enhancements_slide);

    // =========================================================================
    // SLIDE 27: Font Size Presets (NEW v0.2.1)
    // =========================================================================
    println!("🔤 Slide 27: Font Size Presets (NEW)");
    
    // Demonstrate different font sizes per bullet
    let large_bullet = BulletPoint::new(&format!("LARGE: {}pt - Extra large text", font_sizes::LARGE)).font_size(font_sizes::LARGE);
    let heading_bullet = BulletPoint::new(&format!("HEADING: {}pt - Section headers", font_sizes::HEADING)).font_size(font_sizes::HEADING);
    let body_bullet = BulletPoint::new(&format!("BODY: {}pt - Regular content", font_sizes::BODY)).font_size(font_sizes::BODY);
    let small_bullet = BulletPoint::new(&format!("SMALL: {}pt - Smaller text", font_sizes::SMALL)).font_size(font_sizes::SMALL);
    let caption_bullet = BulletPoint::new(&format!("CAPTION: {}pt - Captions and notes", font_sizes::CAPTION)).font_size(font_sizes::CAPTION);
    
    let mut font_size_slide = SlideContent::new("Font Size Presets - Each line different size")
        .layout(SlideLayout::TitleAndContent)
        .title_color("1F497D")
        .title_bold(true)
        .title_size(font_sizes::TITLE);
    font_size_slide.bullets.push(large_bullet);
    font_size_slide.bullets.push(heading_bullet);
    font_size_slide.bullets.push(body_bullet);
    font_size_slide.bullets.push(small_bullet);
    font_size_slide.bullets.push(caption_bullet);
    
    slides.push(font_size_slide);

    // =========================================================================
    // SLIDE 28: Theme Colors (NEW v0.2.1)
    // =========================================================================
    println!("🎨 Slide 28: Theme Colors (NEW)");
    
    // Create shapes with theme colors
    let corporate_shape = Shape::new(ShapeType::Rectangle, 500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::CORPORATE.primary))
        .with_text("Corporate");
    
    let modern_shape = Shape::new(ShapeType::Rectangle, 2500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::MODERN.primary))
        .with_text("Modern");
    
    let vibrant_shape = Shape::new(ShapeType::Rectangle, 4500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::VIBRANT.primary))
        .with_text("Vibrant");
    
    let dark_shape = Shape::new(ShapeType::Rectangle, 6500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::DARK.primary))
        .with_text("Dark");
    
    let nature_shape = Shape::new(ShapeType::Rectangle, 500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::NATURE.primary))
        .with_text("Nature");
    
    let tech_shape = Shape::new(ShapeType::Rectangle, 2500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::TECH.primary))
        .with_text("Tech");
    
    let carbon_shape = Shape::new(ShapeType::Rectangle, 4500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::CARBON.primary))
        .with_text("Carbon");
    
    slides.push(
        SlideContent::new("Theme Color Palettes")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_shape(corporate_shape)
            .add_shape(modern_shape)
            .add_shape(vibrant_shape)
            .add_shape(dark_shape)
            .add_shape(nature_shape)
            .add_shape(tech_shape)
            .add_shape(carbon_shape)
    );

    // =========================================================================
    // SLIDE 29: Material & Carbon Design Colors (NEW v0.2.1)
    // =========================================================================
    println!("🌈 Slide 29: Material & Carbon Colors (NEW)");
    
    // Material Design colors
    let material_red = Shape::new(ShapeType::Rectangle, 500000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_RED))
        .with_text("M-Red");
    
    let material_blue = Shape::new(ShapeType::Rectangle, 1900000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_BLUE))
        .with_text("M-Blue");
    
    let material_green = Shape::new(ShapeType::Rectangle, 3300000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_GREEN))
        .with_text("M-Green");
    
    let material_orange = Shape::new(ShapeType::Rectangle, 4700000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_ORANGE))
        .with_text("M-Orange");
    
    let material_purple = Shape::new(ShapeType::Rectangle, 6100000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_PURPLE))
        .with_text("M-Purple");
    
    // Carbon Design colors
    let carbon_blue = Shape::new(ShapeType::Rectangle, 500000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_BLUE_60))
        .with_text("C-Blue");
    
    let carbon_green = Shape::new(ShapeType::Rectangle, 1900000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_GREEN_50))
        .with_text("C-Green");
    
    let carbon_red = Shape::new(ShapeType::Rectangle, 3300000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_RED_60))
        .with_text("C-Red");
    
    let carbon_purple = Shape::new(ShapeType::Rectangle, 4700000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_PURPLE_60))
        .with_text("C-Purple");
    
    let carbon_gray = Shape::new(ShapeType::Rectangle, 6100000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_GRAY_100))
        .with_text("C-Gray");
    
    slides.push(
        SlideContent::new("Material & Carbon Design Colors")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_shape(material_red)
            .add_shape(material_blue)
            .add_shape(material_green)
            .add_shape(material_orange)
            .add_shape(material_purple)
            .add_shape(carbon_blue)
            .add_shape(carbon_green)
            .add_shape(carbon_red)
            .add_shape(carbon_purple)
            .add_shape(carbon_gray)
    );

    // =========================================================================
    // SLIDE 30: Image from Base64 (NEW v0.2.1)
    // =========================================================================
    println!("🖼️ Slide 30: Image from Base64 (NEW)");
    
    // 1x1 red PNG pixel in base64
    let _red_pixel_base64 = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8DwHwAFBQIAX8jx0gAAAABJRU5ErkJggg==";
    
    // Create image from base64 (demonstrating the API)
    let _base64_image = ImageBuilder::from_base64(_red_pixel_base64, 914400, 914400, "PNG")
        .position(4000000, 2500000)
        .build();
    
    slides.push(
        SlideContent::new("Image Loading - New Methods")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Image::new(path) - Load from file path")
            .add_bullet("Image::from_base64(data) - Load from base64 string")
            .add_bullet("Image::from_bytes(data) - Load from raw bytes")
            .add_bullet("ImageBuilder for fluent API configuration")
            .add_bullet("Built-in base64 decoder (no external deps)")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 31: Feature Summary (NEW v0.2.1)
    // =========================================================================
    println!("📋 Slide 31: v0.2.1 Feature Summary (NEW)");
    
    slides.push(
        SlideContent::new("New Features in v0.2.1")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_numbered("BulletStyle: Number, Letter, Roman, Custom")
            .add_numbered("TextFormat: Strikethrough, Highlight")
            .add_numbered("TextFormat: Subscript, Superscript")
            .add_numbered("Font size presets in prelude")
            .add_numbered("Image::from_base64 and from_bytes")
            .add_numbered("Theme color palettes (7 themes)")
            .add_numbered("Material & Carbon Design colors")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 32: Slide Show Settings - Comparison Table (REAL: embedded in presProps.xml)
    // =========================================================================
    println!("🎬 Slide 34: Slide Show Settings (Visual)");

    let show_speaker = SlideShowSettings::new().pen_color(PenColor::red());
    let show_kiosk = SlideShowSettings::kiosk();
    let _show_range = SlideShowSettings::new()
        .show_type(ShowType::Browsed)
        .slide_range(SlideRange::Range { start: 1, end: 10 })
        .without_animation(true);
    let _speaker_xml = show_speaker.to_xml();
    let _kiosk_xml = show_kiosk.to_xml();

    let show_table = TableBuilder::new(vec![2000000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Setting").bold().background_color("1F4E79").text_color("FFFFFF"),
            TableCell::new("Speaker").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Kiosk").bold().background_color("ED7D31").text_color("FFFFFF"),
            TableCell::new("Browsed").bold().background_color("70AD47").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Loop").bold().background_color("D6E4F0"),
            TableCell::new("No"), TableCell::new("Yes").bold().text_color("2E7D32"),
            TableCell::new("No"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Narration").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("No").text_color("C62828"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Animation").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("Yes"),
            TableCell::new("No").text_color("C62828"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Timings").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("Auto"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Slide Range").bold().background_color("D6E4F0"),
            TableCell::new("All"), TableCell::new("All"),
            TableCell::new("1-10"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Pen Color").bold().background_color("D6E4F0"),
            TableCell::new("Red").text_color("FF0000"),
            TableCell::new("Red").text_color("FF0000"),
            TableCell::new("Red").text_color("FF0000"),
        ]))
        .position(300000, 1600000)
        .build();

    // Mode icons
    let icon_speaker = Shape::new(ShapeType::RoundedRectangle, 300000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Speaker: Full control");
    let icon_kiosk = Shape::new(ShapeType::RoundedRectangle, 3100000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Kiosk: Auto-loop");
    let icon_browsed = Shape::new(ShapeType::RoundedRectangle, 5900000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Browsed: Scrollbar");

    slides.push(
        SlideContent::new("Slide Show Settings - Mode Comparison")
            .table(show_table)
            .add_shape(icon_speaker)
            .add_shape(icon_kiosk)
            .add_shape(icon_browsed)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 35: Print Settings - Visual Handout Grid
    // =========================================================================
    println!("🖨️  Slide 35: Print Settings & Handouts (Visual)");

    let print = PrintSettings::new()
        .print_what(PrintWhat::Handouts)
        .color_mode(PrintColorMode::Grayscale)
        .handout_layout(GenHandoutLayout::SlidesPerPage6)
        .frame_slides(true)
        .header("Q1 2025 Strategy Review")
        .footer("Confidential - Internal Use Only")
        .print_date(true)
        .print_page_numbers(true);
    let _prnpr_xml = print.to_prnpr_xml();
    let _handout_xml = print.to_handout_master_xml();

    // Visual: 6-slide handout grid (2 cols x 3 rows)
    let hdr = Shape::new(ShapeType::Rectangle, 300000, 1500000, 4200000, 300000)
        .with_fill(ShapeFill::new("E7E6E6"))
        .with_text("Q1 2025 Strategy Review");
    // Row 1
    let s1 = Shape::new(ShapeType::Rectangle, 400000, 2000000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 1");
    let s2 = Shape::new(ShapeType::Rectangle, 2500000, 2000000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 2");
    // Row 2
    let s3 = Shape::new(ShapeType::Rectangle, 400000, 3200000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 3");
    let s4 = Shape::new(ShapeType::Rectangle, 2500000, 3200000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 4");
    // Row 3
    let s5 = Shape::new(ShapeType::Rectangle, 400000, 4400000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 5");
    let s6 = Shape::new(ShapeType::Rectangle, 2500000, 4400000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 6");
    let ftr = Shape::new(ShapeType::Rectangle, 300000, 5600000, 4200000, 300000)
        .with_fill(ShapeFill::new("E7E6E6"))
        .with_text("Confidential - Internal Use Only");

    // Settings summary table on the right
    let print_table = TableBuilder::new(vec![1800000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Print Settings").bold().background_color("1F4E79").text_color("FFFFFF"),
            TableCell::new("").background_color("1F4E79"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Print What").bold().background_color("D6E4F0"),
            TableCell::new("Handouts"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Color Mode").bold().background_color("D6E4F0"),
            TableCell::new("Grayscale"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Layout").bold().background_color("D6E4F0"),
            TableCell::new("6 slides/page"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Frame Slides").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Date").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Page Numbers").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .position(5000000, 1800000)
        .build();

    slides.push(
        SlideContent::new("Print Handout - 6 Slides Per Page")
            .table(print_table)
            .add_shape(hdr)
            .add_shape(s1).add_shape(s2)
            .add_shape(s3).add_shape(s4)
            .add_shape(s5).add_shape(s6)
            .add_shape(ftr)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 36: Advanced Table Merging - Actual Merged Table
    // =========================================================================
    println!("📊 Slide 36: Advanced Table Merging (Visual)");

    // Use TableMergeMap to compute states, then build a visual table
    let mut merge_map = TableMergeMap::new(5, 4);
    merge_map.merge_cells(0, 0, 1, 4).unwrap(); // Title row spans all 4 cols
    merge_map.merge_cells(1, 0, 2, 1).unwrap(); // "Products" spans 2 rows
    merge_map.merge_cells(3, 0, 2, 1).unwrap(); // "Services" spans 2 rows

    // Show merge state labels
    let state_00 = merge_map.cell_state(0, 0); // Anchor gridSpan=4
    let state_01 = merge_map.cell_state(0, 1); // HMerge
    let state_10 = merge_map.cell_state(1, 0); // Anchor rowSpan=2
    let state_20 = merge_map.cell_state(2, 0); // VMerge
    println!("   ├── (0,0): {}", state_00.to_xml_attrs().trim());
    println!("   ├── (0,1): {}", state_01.to_xml_attrs().trim());
    println!("   ├── (1,0): {}", state_10.to_xml_attrs().trim());
    println!("   └── (2,0): {}", state_20.to_xml_attrs().trim());

    // Build the table with REAL merge attributes (gridSpan, rowSpan, hMerge, vMerge)
    let merge_table = TableBuilder::new(vec![1500000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2025 Revenue Report").bold().background_color("1F4E79").text_color("FFFFFF").grid_span(4),
            TableCell::new("").background_color("1F4E79").h_merge(),
            TableCell::new("").background_color("1F4E79").h_merge(),
            TableCell::new("").background_color("1F4E79").h_merge(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Products").bold().background_color("BDD7EE").text_color("1F497D").row_span(2),
            TableCell::new("Hardware").background_color("E2EFDA"),
            TableCell::new("$450,000").text_color("2E7D32").align_right(),
            TableCell::new("+12%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("").background_color("BDD7EE").v_merge(),
            TableCell::new("Software").background_color("E2EFDA"),
            TableCell::new("$680,000").text_color("2E7D32").align_right(),
            TableCell::new("+25%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Services").bold().background_color("FCE4D6").text_color("C65911").row_span(2),
            TableCell::new("Consulting").background_color("FFF2CC"),
            TableCell::new("$320,000").text_color("2E7D32").align_right(),
            TableCell::new("+8%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("").background_color("FCE4D6").v_merge(),
            TableCell::new("Support").background_color("FFF2CC"),
            TableCell::new("$190,000").text_color("2E7D32").align_right(),
            TableCell::new("+5%").bold().text_color("2E7D32").align_right(),
        ]))
        .position(300000, 1600000)
        .build();

    // Legend shapes
    let legend_anchor = Shape::new(ShapeType::RoundedRectangle, 300000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Anchor (gridSpan/rowSpan)");
    let legend_hmerge = Shape::new(ShapeType::RoundedRectangle, 2500000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("hMerge (col covered)");
    let legend_vmerge = Shape::new(ShapeType::RoundedRectangle, 4700000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("vMerge (row covered)");
    let legend_normal = Shape::new(ShapeType::RoundedRectangle, 6900000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"))
        .with_text("Normal (no merge)");

    slides.push(
        SlideContent::new("Advanced Table Merging - Merged Cells")
            .table(merge_table)
            .add_shape(legend_anchor)
            .add_shape(legend_hmerge)
            .add_shape(legend_vmerge)
            .add_shape(legend_normal)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // Build PresentationSettings with all advanced features
    // =========================================================================
    println!("\n⚙️  Building Presentation Settings...");

    // Slide show settings (embedded in presProps.xml as <p:showPr>)
    let show_settings = SlideShowSettings::new()
        .show_type(ShowType::Speaker)
        .pen_color(PenColor::red())
        .use_timings(true);
    println!("   ├── Slide Show: Speaker mode, red pen, timings enabled");
    println!("   │   └── XML: {} bytes", show_settings.to_xml().len());

    // Print settings (embedded in presProps.xml as <p:prnPr>)
    let print_settings = PrintSettings::new()
        .print_what(PrintWhat::Handouts)
        .color_mode(PrintColorMode::Grayscale)
        .handout_layout(GenHandoutLayout::SlidesPerPage6)
        .frame_slides(true)
        .header("Q1 2025 Strategy Review")
        .footer("Confidential - Internal Use Only")
        .print_date(true)
        .print_page_numbers(true);
    println!("   └── Print: Handouts, 6/page, grayscale, framed");
    println!("       └── XML: {} bytes", print_settings.to_prnpr_xml().len());

    let pres_settings = PresentationSettings::new()
        .slide_show(show_settings)
        .print(print_settings);
    println!("   All settings configured → presProps.xml");

    // =========================================================================
    // Generate PPTX with real integrated features
    // =========================================================================
    println!("\n📦 Generating PPTX with integrated features...");
    let pptx_data = create_pptx_with_settings(
        "PPTX-RS Element Showcase",
        slides.clone(),
        Some(pres_settings),
    )?;
    fs::write("comprehensive_demo.pptx", &pptx_data)?;
    println!("   ✓ Created comprehensive_demo.pptx ({} slides, {} bytes)", 
             slides.len(), pptx_data.len());

    // =========================================================================
    // Package Analysis - Demonstrate Reading
    // =========================================================================
    println!("\n📖 Package Analysis (Read Capability):");
    
    let package = Package::open("comprehensive_demo.pptx")?;
    let paths = package.part_paths();
    
    let slide_count = paths.iter()
        .filter(|p| p.starts_with("ppt/slides/slide") && p.ends_with(".xml"))
        .count();
    
    println!("   ├── Total parts: {}", package.part_count());
    println!("   ├── Slides: {}", slide_count);
    println!("   └── Package opened and analyzed successfully");

    // =========================================================================
    // NEW: Parts API Demonstration
    // =========================================================================
    println!("\n🧩 Parts API Demonstration:");
    
    // SlideLayoutPart - 11 layout types
    println!("   ┌── SlideLayoutPart (11 layout types):");
    let layouts = [
        LayoutType::Title,
        LayoutType::TitleAndContent,
        LayoutType::SectionHeader,
        LayoutType::TwoContent,
        LayoutType::Comparison,
        LayoutType::TitleOnly,
        LayoutType::Blank,
        LayoutType::ContentWithCaption,
        LayoutType::PictureWithCaption,
        LayoutType::TitleAndVerticalText,
        LayoutType::VerticalTitleAndText,
    ];
    for (i, layout_type) in layouts.iter().enumerate() {
        let layout = SlideLayoutPart::new(i + 1, *layout_type);
        if i < 3 {
            println!("   │   ├── {}: {} ({})", i + 1, layout_type.name(), layout.path());
        }
    }
    println!("   │   └── ... and {} more layout types", layouts.len() - 3);
    
    // SlideMasterPart
    println!("   ├── SlideMasterPart:");
    let mut master = SlideMasterPart::new(1);
    master.set_name("Custom Master");
    master.add_layout_rel_id("rId2");
    master.add_layout_rel_id("rId3");
    println!("   │   ├── Name: {}", master.name());
    println!("   │   ├── Path: {}", master.path());
    println!("   │   └── Layouts: {} linked", master.layout_rel_ids().len());
    
    // ThemePart - Colors and Fonts
    println!("   ├── ThemePart (colors & fonts):");
    let mut theme = ThemePart::new(1);
    theme.set_name("Corporate Theme");
    theme.set_major_font("Arial");
    theme.set_minor_font("Calibri");
    theme.set_color("accent1", "FF5733");
    theme.set_color("accent2", "33FF57");
    let theme_xml = theme.to_xml()?;
    println!("   │   ├── Name: {}", theme.name());
    println!("   │   ├── Major Font: Arial");
    println!("   │   ├── Minor Font: Calibri");
    println!("   │   └── XML size: {} bytes", theme_xml.len());
    
    // NotesSlidePart - Speaker notes
    println!("   ├── NotesSlidePart (speaker notes):");
    let notes = NotesSlidePart::with_text(1, "Remember to:\n- Introduce yourself\n- Explain the agenda\n- Ask for questions");
    let notes_xml = notes.to_xml()?;
    println!("   │   ├── Path: {}", notes.path());
    println!("   │   ├── Text: \"{}...\"", &notes.notes_text()[..20.min(notes.notes_text().len())]);
    println!("   │   └── XML size: {} bytes", notes_xml.len());
    
    // AppPropertiesPart - Application metadata
    println!("   ├── AppPropertiesPart (metadata):");
    let mut app_props = AppPropertiesPart::new();
    app_props.set_company("Acme Corporation");
    app_props.set_slides(slides.len() as u32);
    let app_xml = app_props.to_xml()?;
    println!("   │   ├── Company: Acme Corporation");
    println!("   │   ├── Slides: {}", slides.len());
    println!("   │   └── XML size: {} bytes", app_xml.len());
    
    // MediaPart - Video/Audio formats
    println!("   ├── MediaPart (10 media formats):");
    println!("   │   ├── Video: mp4, webm, avi, wmv, mov");
    println!("   │   ├── Audio: mp3, wav, wma, m4a, ogg");
    let sample_media = MediaPart::new(1, MediaFormat::Mp4, vec![0; 100]);
    println!("   │   └── Sample: {} ({})", sample_media.path(), sample_media.format().mime_type());
    
    // TablePart - Table with formatting
    println!("   ├── TablePart (cell formatting):");
    let table_part = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Header 1").bold().background("4472C4"),
            TableCellPart::new("Header 2").bold().background("4472C4"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Data 1").color("333333"),
            TableCellPart::new("Data 2").italic(),
        ]))
        .position(EMU_PER_INCH, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 6, EMU_PER_INCH * 2);
    let table_xml = table_part.to_slide_xml(10);
    println!("   │   ├── Rows: {}", table_part.rows.len());
    println!("   │   ├── Features: bold, italic, colors, backgrounds");
    println!("   │   └── XML size: {} bytes", table_xml.len());
    
    // ContentTypesPart
    println!("   └── ContentTypesPart:");
    let mut content_types = ContentTypesPart::new();
    content_types.add_presentation();
    content_types.add_slide(1);
    content_types.add_slide_layout(1);
    content_types.add_slide_master(1);
    content_types.add_theme(1);
    content_types.add_core_properties();
    content_types.add_app_properties();
    let ct_xml = content_types.to_xml()?;
    println!("       ├── Path: {}", content_types.path());
    println!("       └── XML size: {} bytes", ct_xml.len());

    // =========================================================================
    // NEW: Elements API Demonstration
    // =========================================================================
    println!("\n🎨 Elements API Demonstration:");
    
    // Color types
    println!("   ┌── Color Types:");
    let rgb = RgbColor::new(255, 87, 51);
    let rgb_hex = RgbColor::from_hex("#4472C4").unwrap();
    let scheme = SchemeColor::Accent1;
    let color = Color::rgb(100, 149, 237);
    println!("   │   ├── RgbColor::new(255, 87, 51) → {}", rgb.to_hex());
    println!("   │   ├── RgbColor::from_hex(\"#4472C4\") → {}", rgb_hex.to_hex());
    println!("   │   ├── SchemeColor::Accent1 → {}", scheme.as_str());
    println!("   │   └── Color::rgb(100, 149, 237) → XML: {}", color.to_xml().chars().take(30).collect::<String>());
    
    // Position and Size
    println!("   ├── Position & Size (EMU units):");
    let pos = Position::from_inches(1.0, 2.0);
    let size = Size::from_inches(4.0, 3.0);
    println!("   │   ├── Position::from_inches(1.0, 2.0) → x={}, y={}", pos.x, pos.y);
    println!("   │   ├── Size::from_inches(4.0, 3.0) → w={}, h={}", size.width, size.height);
    println!("   │   └── EMU_PER_INCH = {}", EMU_PER_INCH);
    
    // Transform
    println!("   └── Transform (position + size + rotation):");
    let transform = Transform::from_inches(1.0, 1.5, 3.0, 2.0).with_rotation(45.0);
    let transform_xml = transform.to_xml();
    println!("       ├── Transform::from_inches(1.0, 1.5, 3.0, 2.0)");
    println!("       ├── .with_rotation(45.0)");
    println!("       └── XML: {}...", &transform_xml[..50.min(transform_xml.len())]);

    // =========================================================================
    // NEW: Advanced Features Demonstration
    // =========================================================================
    println!("\n🚀 Advanced Features Demonstration:");

    // -------------------------------------------------------------------------
    // Complex Table Examples
    // -------------------------------------------------------------------------
    println!("   ┌── Complex Table Examples:");
    
    // Example 1: Financial Report Table
    println!("   │   ┌── Financial Report Table (5x4 with formatting):");
    let financial_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Q1 2024 Financial Summary")
                .col_span(4)
                .bold()
                .center()
                .background("1F4E79")
                .color("FFFFFF")
                .font_size(14)
                .font("Arial Black"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Category").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Revenue").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Expenses").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Profit").bold().center().background("2E75B6").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Product Sales").align(HorizontalAlign::Left),
            TableCellPart::new("$1,250,000").align(HorizontalAlign::Right).color("2E7D32"),
            TableCellPart::new("$450,000").align(HorizontalAlign::Right).color("C62828"),
            TableCellPart::new("$800,000").align(HorizontalAlign::Right).bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Services").align(HorizontalAlign::Left),
            TableCellPart::new("$890,000").align(HorizontalAlign::Right).color("2E7D32"),
            TableCellPart::new("$320,000").align(HorizontalAlign::Right).color("C62828"),
            TableCellPart::new("$570,000").align(HorizontalAlign::Right).bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Total").bold().background("E7E6E6"),
            TableCellPart::new("$2,140,000").bold().align(HorizontalAlign::Right).background("E7E6E6"),
            TableCellPart::new("$770,000").bold().align(HorizontalAlign::Right).background("E7E6E6"),
            TableCellPart::new("$1,370,000").bold().align(HorizontalAlign::Right).background("C6EFCE").color("006100"),
        ]))
        .position(EMU_PER_INCH / 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 8, EMU_PER_INCH * 3);
    let fin_xml = financial_table.to_slide_xml(100);
    println!("   │   │   ├── Merged header spanning 4 columns");
    println!("   │   │   ├── Color-coded values (green=positive, red=negative)");
    println!("   │   │   ├── Custom fonts and sizes");
    println!("   │   │   └── XML: {} bytes", fin_xml.len());

    // Example 2: Comparison Matrix
    println!("   │   ├── Comparison Matrix (features vs products):");
    let matrix_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Feature").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Basic").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Pro").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Enterprise").bold().center().background("4472C4").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Storage").align(HorizontalAlign::Left),
            TableCellPart::new("5 GB").center(),
            TableCellPart::new("50 GB").center(),
            TableCellPart::new("Unlimited").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Users").align(HorizontalAlign::Left),
            TableCellPart::new("1").center(),
            TableCellPart::new("10").center(),
            TableCellPart::new("Unlimited").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Support").align(HorizontalAlign::Left),
            TableCellPart::new("Email").center(),
            TableCellPart::new("24/7 Chat").center(),
            TableCellPart::new("Dedicated").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Price/mo").bold().background("F2F2F2"),
            TableCellPart::new("$9").center().bold().background("F2F2F2"),
            TableCellPart::new("$29").center().bold().background("F2F2F2"),
            TableCellPart::new("$99").center().bold().background("F2F2F2"),
        ]));
    println!("   │   │   └── 5x4 matrix with alternating styles");

    // Example 3: Schedule/Timeline Table
    println!("   │   └── Schedule Table (with row spans):");
    let schedule_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Time").bold().center().background("70AD47").color("FFFFFF"),
            TableCellPart::new("Monday").bold().center().background("70AD47").color("FFFFFF"),
            TableCellPart::new("Tuesday").bold().center().background("70AD47").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("9:00 AM").center().background("E2EFDA"),
            TableCellPart::new("Team Standup").center().row_span(2).valign(VerticalAlign::Middle).background("BDD7EE"),
            TableCellPart::new("Code Review").center(),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("10:00 AM").center().background("E2EFDA"),
            TableCellPart::merged(),
            TableCellPart::new("Sprint Planning").center().background("FCE4D6"),
        ]));
    println!("   │       └── Row spans for multi-hour events");

    // -------------------------------------------------------------------------
    // Complex Animation Sequences
    // -------------------------------------------------------------------------
    println!("   ├── Complex Animation Sequences:");
    
    // Sequence 1: Title entrance with staggered content
    println!("   │   ┌── Staggered Entrance Sequence:");
    let title_anim = Animation::new(2, AnimationEffect::Fade)
        .trigger(AnimationTrigger::OnClick)
        .duration(500);
    let content1 = Animation::new(3, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(200);
    let content2 = Animation::new(4, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(100);
    let content3 = Animation::new(5, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(100);
    let staggered = SlideAnimations::new()
        .add(title_anim)
        .add(content1)
        .add(content2)
        .add(content3)
        .transition(SlideTransition::new(TransitionEffect::Push).direction(AnimationDirection::Left).duration(750));
    let staggered_xml = staggered.to_timing_xml()?;
    println!("   │   │   ├── Title: Fade on click");
    println!("   │   │   ├── Content 1-3: FlyIn with 100ms stagger");
    println!("   │   │   ├── Transition: Push from left (750ms)");
    println!("   │   │   └── XML: {} bytes", staggered_xml.len());

    // Sequence 2: Emphasis and exit
    println!("   │   ├── Emphasis + Exit Sequence:");
    let emphasis = Animation::new(6, AnimationEffect::Pulse)
        .trigger(AnimationTrigger::OnClick)
        .duration(1000)
        .repeat(3);
    let exit = Animation::new(6, AnimationEffect::FadeOut)
        .trigger(AnimationTrigger::AfterPrevious)
        .duration(500);
    let emphasis_seq = SlideAnimations::new()
        .add(emphasis)
        .add(exit);
    println!("   │   │   ├── Pulse 3x on click, then fade out");
    println!("   │   │   └── Same shape, sequential effects");

    // Sequence 3: Motion path
    println!("   │   └── Motion Path Animation:");
    let motion = Animation::new(7, AnimationEffect::Lines)
        .trigger(AnimationTrigger::OnClick)
        .duration(2000);
    println!("   │       └── Custom path: Lines, Arcs, Turns, Loops");

    // -------------------------------------------------------------------------
    // SmartArt Combinations
    // -------------------------------------------------------------------------
    println!("   ├── SmartArt Layout Examples:");
    
    // Process flow
    println!("   │   ┌── Process Flow (5 steps):");
    let process = SmartArtPart::new(1, SmartArtLayout::BasicProcess)
        .add_items(vec!["Research", "Design", "Develop", "Test", "Deploy"])
        .position(EMU_PER_INCH / 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 8, EMU_PER_INCH * 2);
    println!("   │   │   └── {} nodes in horizontal flow", process.nodes().len());

    // Organization chart
    println!("   │   ├── Organization Chart:");
    let org = SmartArtPart::new(2, SmartArtLayout::OrgChart)
        .add_items(vec!["CEO", "CTO", "CFO", "VP Engineering", "VP Sales"]);
    println!("   │   │   └── Hierarchical structure with {} positions", org.nodes().len());

    // Cycle diagram
    println!("   │   ├── Cycle Diagram:");
    let cycle = SmartArtPart::new(3, SmartArtLayout::BasicCycle)
        .add_items(vec!["Plan", "Do", "Check", "Act"]);
    println!("   │   │   └── PDCA cycle with {} phases", cycle.nodes().len());

    // Venn diagram
    println!("   │   ├── Venn Diagram:");
    let venn = SmartArtPart::new(4, SmartArtLayout::BasicVenn)
        .add_items(vec!["Skills", "Passion", "Market Need"]);
    println!("   │   │   └── 3-circle Venn for Ikigai concept");

    // Pyramid
    println!("   │   └── Pyramid:");
    let pyramid = SmartArtPart::new(5, SmartArtLayout::BasicPyramid)
        .add_items(vec!["Self-Actualization", "Esteem", "Love/Belonging", "Safety", "Physiological"]);
    println!("   │       └── Maslow's hierarchy with {} levels", pyramid.nodes().len());

    // -------------------------------------------------------------------------
    // 3D Model Configurations
    // -------------------------------------------------------------------------
    println!("   ├── 3D Model Configurations:");
    
    // Product showcase
    println!("   │   ┌── Product Showcase:");
    let product_3d = Model3DPart::new(1, Model3DFormat::Glb, vec![0; 100])
        .camera(CameraPreset::IsometricTopUp)
        .rotation(0.0, 45.0, 0.0)
        .zoom(1.2)
        .position(EMU_PER_INCH * 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 4, EMU_PER_INCH * 4);
    println!("   │   │   ├── Camera: Isometric top-up view");
    println!("   │   │   ├── Rotation: 45° Y-axis for best angle");
    println!("   │   │   └── Zoom: 1.2x for detail");

    // Architectural model
    println!("   │   ├── Architectural Model:");
    let arch_3d = Model3DPart::new(2, Model3DFormat::Gltf, vec![0; 100])
        .camera(CameraPreset::Front)
        .rotation(15.0, -30.0, 0.0)
        .ambient_light("FFFFCC");
    println!("   │   │   ├── Camera: Front view with tilt");
    println!("   │   │   └── Ambient: Warm lighting (FFFFCC)");

    // Technical diagram
    println!("   │   └── Technical Diagram:");
    let tech_3d = Model3DPart::new(3, Model3DFormat::Obj, vec![0; 100])
        .camera(CameraPreset::IsometricOffAxis1Top)
        .rotation(0.0, 0.0, 0.0);
    println!("   │       └── Camera: Off-axis isometric for exploded view");

    // -------------------------------------------------------------------------
    // Theme + Master + Layout Combination
    // -------------------------------------------------------------------------
    println!("   ├── Theme + Master + Layout Integration:");
    
    // Corporate theme
    let mut corp_theme = ThemePart::new(1);
    corp_theme.set_name("Corporate Blue");
    corp_theme.set_major_font("Segoe UI");
    corp_theme.set_minor_font("Segoe UI Light");
    corp_theme.set_color("dk1", "000000");
    corp_theme.set_color("lt1", "FFFFFF");
    corp_theme.set_color("dk2", "1F497D");
    corp_theme.set_color("lt2", "EEECE1");
    corp_theme.set_color("accent1", "4472C4");
    corp_theme.set_color("accent2", "ED7D31");
    corp_theme.set_color("accent3", "A5A5A5");
    corp_theme.set_color("accent4", "FFC000");
    corp_theme.set_color("accent5", "5B9BD5");
    corp_theme.set_color("accent6", "70AD47");
    let theme_xml = corp_theme.to_xml()?;
    println!("   │   ├── Theme: Corporate Blue");
    println!("   │   │   ├── Fonts: Segoe UI / Segoe UI Light");
    println!("   │   │   ├── 12 color slots defined");
    println!("   │   │   └── XML: {} bytes", theme_xml.len());

    // Master with multiple layouts
    let mut corp_master = SlideMasterPart::new(1);
    corp_master.set_name("Corporate Master");
    corp_master.add_layout_rel_id("rId2"); // Title
    corp_master.add_layout_rel_id("rId3"); // Title + Content
    corp_master.add_layout_rel_id("rId4"); // Section Header
    corp_master.add_layout_rel_id("rId5"); // Two Content
    corp_master.add_layout_rel_id("rId6"); // Comparison
    corp_master.add_layout_rel_id("rId7"); // Title Only
    corp_master.add_layout_rel_id("rId8"); // Blank
    println!("   │   └── Master: {} with {} layouts linked", corp_master.name(), corp_master.layout_rel_ids().len());

    // -------------------------------------------------------------------------
    // VBA + Custom XML Integration
    // -------------------------------------------------------------------------
    println!("   ├── VBA + Custom XML Integration:");
    
    // VBA with multiple modules
    let vba_project = VbaProjectPart::new()
        .add_module(VbaModule::new("AutoRun", r#"
Sub Auto_Open()
    MsgBox "Welcome to the presentation!"
End Sub

Sub NavigateToSlide(slideNum As Integer)
    SlideShowWindows(1).View.GotoSlide slideNum
End Sub
"#))
        .add_module(VbaModule::new("DataHelpers", r#"
Function GetCustomData(key As String) As String
    ' Read from Custom XML part
    GetCustomData = ActivePresentation.CustomXMLParts(1).SelectSingleNode("//" & key).Text
End Function
"#))
        .add_module(VbaModule::class("SlideController", r#"
Private currentSlide As Integer

Public Sub NextSlide()
    currentSlide = currentSlide + 1
    NavigateToSlide currentSlide
End Sub
"#));
    println!("   │   ├── VBA Project:");
    println!("   │   │   ├── AutoRun: Auto_Open, NavigateToSlide");
    println!("   │   │   ├── DataHelpers: GetCustomData (reads Custom XML)");
    println!("   │   │   └── SlideController: Class for navigation");

    // Custom XML with structured data
    let app_config = CustomXmlPart::new(1, "presentationConfig")
        .namespace("http://company.com/pptx/config")
        .property("version", "2.1.0")
        .property("author", "Demo User")
        .property("department", "Engineering")
        .property("confidentiality", "Internal")
        .property("lastModified", "2024-01-15T10:30:00Z");
    let config_xml = app_config.to_xml()?;
    println!("   │   └── Custom XML:");
    println!("   │       ├── Namespace: http://company.com/pptx/config");
    println!("   │       ├── Properties: version, author, department, etc.");
    println!("   │       └── XML: {} bytes", config_xml.len());

    // -------------------------------------------------------------------------
    // Embedded Fonts with Variants
    // -------------------------------------------------------------------------
    println!("   ├── Embedded Font Collection:");
    let mut font_collection = EmbeddedFontCollection::new();
    font_collection.add("Corporate Sans", vec![0; 1000]);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::Bold);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::Italic);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::BoldItalic);
    font_collection.add("Code Mono", vec![0; 800]);
    let fonts_xml = font_collection.to_xml();
    println!("   │   ├── Corporate Sans: Regular, Bold, Italic, BoldItalic");
    println!("   │   ├── Code Mono: Regular");
    println!("   │   ├── Total: {} font files", font_collection.len());
    println!("   │   └── XML: {} bytes", fonts_xml.len());

    // -------------------------------------------------------------------------
    // Handout with Full Configuration
    // -------------------------------------------------------------------------
    println!("   └── Handout Master Configuration:");
    let handout = HandoutMasterPart::new()
        .layout(HandoutLayout::SlidesPerPage6)
        .header("Q1 2024 Strategy Review")
        .footer("Confidential - Internal Use Only");
    let handout_xml = handout.to_xml()?;
    println!("       ├── Layout: 6 slides per page");
    println!("       ├── Header: Q1 2024 Strategy Review");
    println!("       ├── Footer: Confidential - Internal Use Only");
    println!("       └── XML: {} bytes", handout_xml.len());

    // =========================================================================
    // Summary
    // =========================================================================
    println!("\n╔══════════════════════════════════════════════════════════════╗");
    println!("║                    Element Coverage Summary                   ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  LAYOUTS (6 types):                                          ║");
    println!("║    ✓ CenteredTitle    ✓ TitleOnly      ✓ TitleAndContent     ║");
    println!("║    ✓ TitleAndBigContent  ✓ TwoColumn   ✓ Blank               ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  TEXT FORMATTING:                                            ║");
    println!("║    ✓ Bold            ✓ Italic         ✓ Underline            ║");
    println!("║    ✓ Font Size       ✓ Font Color     ✓ Title/Content styles ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  TABLES:                                                     ║");
    println!("║    ✓ Multiple rows/columns  ✓ Bold cells  ✓ Background colors║");
    println!("║    ✓ Header styling         ✓ Position control               ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  CHARTS:                                                     ║");
    println!("║    ✓ Bar Chart       ✓ Line Chart     ✓ Pie Chart            ║");
    println!("║    ✓ Multiple series ✓ Categories                            ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  SHAPES:                                                     ║");
    println!("║    ✓ Rectangle       ✓ Ellipse        ✓ RoundedRectangle     ║");
    println!("║    ✓ Triangle        ✓ Diamond        ✓ Color fills          ║");
    println!("║    ✓ Gradient fills  ✓ Transparency   ✓ Text in shapes       ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  CONNECTORS (NEW):                                           ║");
    println!("║    ✓ Straight        ✓ Elbow          ✓ Curved               ║");
    println!("║    ✓ Arrow types     ✓ Dash styles    ✓ Line colors/widths   ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  IMAGES:                                                     ║");
    println!("║    ✓ Image placeholders  ✓ Position   ✓ Dimensions           ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  PACKAGE:                                                    ║");
    println!("║    ✓ Create PPTX     ✓ Read PPTX      ✓ Analyze contents     ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  PARTS API (NEW):                                            ║");
    println!("║    ✓ SlideLayoutPart (11 types)  ✓ SlideMasterPart           ║");
    println!("║    ✓ ThemePart (colors/fonts)    ✓ NotesSlidePart            ║");
    println!("║    ✓ AppPropertiesPart           ✓ MediaPart (10 formats)    ║");
    println!("║    ✓ TablePart (cell formatting) ✓ ContentTypesPart          ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  ELEMENTS API:                                               ║");
    println!("║    ✓ RgbColor        ✓ SchemeColor    ✓ Color enum           ║");
    println!("║    ✓ Position        ✓ Size           ✓ Transform            ║");
    println!("║    ✓ EMU conversions (inches, cm, mm, pt)                    ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  ADVANCED FEATURES (NEW):                                    ║");
    println!("║    ✓ Animation (50+ effects)  ✓ Transitions (27 types)       ║");
    println!("║    ✓ SmartArt (25 layouts)    ✓ 3D Models (GLB/GLTF/OBJ)     ║");
    println!("║    ✓ VBA Macros (.pptm)       ✓ Embedded Fonts               ║");
    println!("║    ✓ Custom XML               ✓ Handout Master               ║");
    println!("║    ✓ Table borders/alignment  ✓ Merged cells                 ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  Output: comprehensive_demo.pptx ({} slides, {} KB)         ║", 
             slides.len(), pptx_data.len() / 1024);
    println!("╚══════════════════════════════════════════════════════════════╝");

    Ok(())
}

pub fn add_numbered(self, text: &str) -> Self

Add a numbered item (shorthand for add_styled_bullet with Number)

Examples found in repository

examples/comprehensive_demo.rs (line 1133)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    println!("╔══════════════════════════════════════════════════════════════╗");
    println!("║       PPTX-RS Element Showcase - Complete Coverage           ║");
    println!("╚══════════════════════════════════════════════════════════════╝\n");

    let mut slides = Vec::new();

    // =========================================================================
    // SLIDE 1: CenteredTitle Layout + Title Formatting
    // =========================================================================
    println!("📐 Slide 1: CenteredTitle Layout + Title Formatting");
    slides.push(
        SlideContent::new("PPTX-RS Element Showcase")
            .layout(SlideLayout::CenteredTitle)
            .title_size(54)
            .title_bold(true)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 2: TitleOnly Layout
    // =========================================================================
    println!("📐 Slide 2: TitleOnly Layout");
    slides.push(
        SlideContent::new("Section: Slide Layouts")
            .layout(SlideLayout::TitleOnly)
            .title_size(48)
            .title_bold(true)
            .title_color("C0504D")
    );

    // =========================================================================
    // SLIDE 3: TitleAndContent Layout + All Text Formatting
    // =========================================================================
    println!("📝 Slide 3: TitleAndContent + Text Formatting");
    slides.push(
        SlideContent::new("Text Formatting Options")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .title_italic(true)
            .title_underline(true)
            .title_size(44)
            .add_bullet("Normal text (default)")
            .add_bullet("Bold content text")
            .add_bullet("Italic content text")
            .add_bullet("Underlined content")
            .add_bullet("Custom font size (28pt)")
            .add_bullet("Custom color (#4F81BD)")
            .content_bold(true)
            .content_italic(true)
            .content_underline(true)
            .content_size(28)
            .content_color("4F81BD")
    );

    // =========================================================================
    // SLIDE 4: TitleAndBigContent Layout
    // =========================================================================
    println!("📐 Slide 4: TitleAndBigContent Layout");
    slides.push(
        SlideContent::new("Key Highlights")
            .layout(SlideLayout::TitleAndBigContent)
            .title_color("1F497D")
            .add_bullet("Large content area for emphasis")
            .add_bullet("Perfect for key messages")
            .add_bullet("Smaller title, bigger content")
            .content_bold(true)
            .content_size(32)
    );

    // =========================================================================
    // SLIDE 5: TwoColumn Layout
    // =========================================================================
    println!("📐 Slide 5: TwoColumn Layout");
    slides.push(
        SlideContent::new("Two Column Comparison")
            .layout(SlideLayout::TwoColumn)
            .title_color("1F497D")
            .add_bullet("Left Column Item 1")
            .add_bullet("Left Column Item 2")
            .add_bullet("Left Column Item 3")
            .add_bullet("Right Column Item 1")
            .add_bullet("Right Column Item 2")
            .add_bullet("Right Column Item 3")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 6: Blank Layout
    // =========================================================================
    println!("📐 Slide 6: Blank Layout");
    slides.push(
        SlideContent::new("")
            .layout(SlideLayout::Blank)
    );

    // =========================================================================
    // SLIDE 7: Table with All Cell Styling Options
    // =========================================================================
    println!("📊 Slide 7: Table with Cell Styling");
    let styled_table = TableBuilder::new(vec![1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Header 1").bold().background_color("1F497D"),
            TableCell::new("Header 2").bold().background_color("4F81BD"),
            TableCell::new("Header 3").bold().background_color("8064A2"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Bold Cell").bold(),
            TableCell::new("Normal Cell"),
            TableCell::new("Colored").background_color("9BBB59"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Red BG").background_color("C0504D"),
            TableCell::new("Green BG").background_color("9BBB59"),
            TableCell::new("Blue BG").background_color("4F81BD"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Row 3 Col 1"),
            TableCell::new("Row 3 Col 2"),
            TableCell::new("Row 3 Col 3").bold().background_color("F79646"),
        ]))
        .position(500000, 1800000)
        .build();
    
    slides.push(
        SlideContent::new("Table with Cell Styling")
            .table(styled_table)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 8: Charts (Bar, Line, Pie)
    // =========================================================================
    println!("📈 Slide 8: Chart Types");
    
    // Create chart data structures (for demonstration)
    let _bar_chart = ChartBuilder::new("Sales by Region", ChartType::Bar)
        .categories(vec!["North", "South", "East", "West"])
        .add_series(ChartSeries::new("2023", vec![100.0, 80.0, 120.0, 90.0]))
        .add_series(ChartSeries::new("2024", vec![120.0, 95.0, 140.0, 110.0]))
        .build();
    
    let _line_chart = ChartBuilder::new("Monthly Trend", ChartType::Line)
        .categories(vec!["Jan", "Feb", "Mar", "Apr", "May", "Jun"])
        .add_series(ChartSeries::new("Revenue", vec![10.0, 12.0, 15.0, 14.0, 18.0, 22.0]))
        .build();
    
    let _pie_chart = ChartBuilder::new("Market Share", ChartType::Pie)
        .categories(vec!["Product A", "Product B", "Product C", "Others"])
        .add_series(ChartSeries::new("Share", vec![40.0, 30.0, 20.0, 10.0]))
        .build();
    
    slides.push(
        SlideContent::new("Chart Types: Bar, Line, Pie")
            .with_chart()
            .title_color("1F497D")
            .add_bullet("Bar Chart: Compare categories")
            .add_bullet("Line Chart: Show trends over time")
            .add_bullet("Pie Chart: Show proportions")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 9: Shapes with Different Fills
    // =========================================================================
    println!("🔷 Slide 9: Shapes with Fills");
    
    let rect = Shape::new(ShapeType::Rectangle, 500000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("4F81BD"))
        .with_text("Rectangle");
    
    let ellipse = Shape::new(ShapeType::Ellipse, 3000000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("9BBB59"))
        .with_text("Ellipse");
    
    let rounded = Shape::new(ShapeType::RoundedRectangle, 5500000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("C0504D"))
        .with_text("Rounded");
    
    let triangle = Shape::new(ShapeType::Triangle, 1500000, 3000000, 1500000, 1200000)
        .with_fill(ShapeFill::new("8064A2"))
        .with_text("Triangle");
    
    let diamond = Shape::new(ShapeType::Diamond, 4000000, 3000000, 1500000, 1200000)
        .with_fill(ShapeFill::new("F79646"))
        .with_text("Diamond");
    
    slides.push(
        SlideContent::new("Shape Types with Color Fills")
            .add_shape(rect)
            .add_shape(ellipse)
            .add_shape(rounded)
            .add_shape(triangle)
            .add_shape(diamond)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 10: Gradient Fills (NEW)
    // =========================================================================
    println!("🌈 Slide 10: Gradient Fills");
    
    // Horizontal gradient
    let gradient_h = Shape::new(ShapeType::Rectangle, 500000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("1565C0", "42A5F5", GradientDirection::Horizontal))
        .with_text("Horizontal");
    
    // Vertical gradient
    let gradient_v = Shape::new(ShapeType::Rectangle, 3200000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("2E7D32", "81C784", GradientDirection::Vertical))
        .with_text("Vertical");
    
    // Diagonal gradient
    let gradient_d = Shape::new(ShapeType::RoundedRectangle, 5900000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("C62828", "EF9A9A", GradientDirection::DiagonalDown))
        .with_text("Diagonal");
    
    // Three-color gradient
    let gradient_3 = Shape::new(ShapeType::Ellipse, 1800000, 3200000, 2500000, 1200000)
        .with_gradient(GradientFill::three_color("FF6F00", "FFC107", "FFEB3B", GradientDirection::Horizontal))
        .with_text("3-Color");
    
    // Custom angle gradient
    let gradient_angle = Shape::new(ShapeType::RoundedRectangle, 4800000, 3200000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("7B1FA2", "E1BEE7", GradientDirection::Angle(135)))
        .with_text("135° Angle");
    
    slides.push(
        SlideContent::new("Gradient Fills - Multiple Directions")
            .add_shape(gradient_h)
            .add_shape(gradient_v)
            .add_shape(gradient_d)
            .add_shape(gradient_3)
            .add_shape(gradient_angle)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 11: Transparency (NEW)
    // =========================================================================
    println!("👻 Slide 11: Transparency Effects");
    
    // Base shape (fully opaque)
    let base = Shape::new(ShapeType::Rectangle, 1000000, 1800000, 3000000, 2000000)
        .with_fill(ShapeFill::new("1565C0"))
        .with_text("Base (100%)");
    
    // 25% transparent overlay
    let trans_25 = Shape::new(ShapeType::Rectangle, 2000000, 2200000, 2500000, 1500000)
        .with_fill(ShapeFill::new("F44336").with_transparency(25))
        .with_line(ShapeLine::new("B71C1C", 25400))
        .with_text("25% Transparent");
    
    // 50% transparent overlay
    let trans_50 = Shape::new(ShapeType::Ellipse, 4500000, 1800000, 2500000, 2000000)
        .with_fill(ShapeFill::new("4CAF50").with_transparency(50))
        .with_line(ShapeLine::new("1B5E20", 25400))
        .with_text("50% Transparent");
    
    // 75% transparent overlay
    let trans_75 = Shape::new(ShapeType::RoundedRectangle, 5500000, 2500000, 2500000, 1500000)
        .with_fill(ShapeFill::new("FF9800").with_transparency(75))
        .with_line(ShapeLine::new("E65100", 25400))
        .with_text("75% Transparent");
    
    slides.push(
        SlideContent::new("Transparency Effects - Overlapping Shapes")
            .add_shape(base)
            .add_shape(trans_25)
            .add_shape(trans_50)
            .add_shape(trans_75)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 12: Styled Connectors (NEW)
    // =========================================================================
    println!("🔗 Slide 12: Styled Connectors");
    
    // Create shapes to connect
    let box1 = Shape::new(ShapeType::RoundedRectangle, 500000, 1800000, 1800000, 800000)
        .with_id(100)
        .with_fill(ShapeFill::new("1565C0"))
        .with_text("Start");
    
    let box2 = Shape::new(ShapeType::RoundedRectangle, 3500000, 1800000, 1800000, 800000)
        .with_id(101)
        .with_fill(ShapeFill::new("2E7D32"))
        .with_text("Process");
    
    let box3 = Shape::new(ShapeType::RoundedRectangle, 6500000, 1800000, 1800000, 800000)
        .with_id(102)
        .with_fill(ShapeFill::new("C62828"))
        .with_text("End");
    
    // Straight connector with arrow
    let conn1 = Connector::straight(2300000, 2200000, 3500000, 2200000)
        .with_line(ConnectorLine::new("1565C0", 25400))
        .with_end_arrow(ArrowType::Triangle)
        .with_arrow_size(ArrowSize::Large);
    
    // Elbow connector with stealth arrow
    let conn2 = Connector::elbow(5300000, 2200000, 6500000, 2200000)
        .with_line(ConnectorLine::new("2E7D32", 38100).with_dash(LineDash::Dash))
        .with_end_arrow(ArrowType::Stealth)
        .with_arrow_size(ArrowSize::Medium);
    
    // Curved connector examples
    let box4 = Shape::new(ShapeType::Ellipse, 1000000, 3200000, 1500000, 800000)
        .with_id(103)
        .with_fill(ShapeFill::new("7B1FA2"))
        .with_text("A");
    
    let box5 = Shape::new(ShapeType::Ellipse, 4000000, 3200000, 1500000, 800000)
        .with_id(104)
        .with_fill(ShapeFill::new("00838F"))
        .with_text("B");
    
    let box6 = Shape::new(ShapeType::Ellipse, 7000000, 3200000, 1500000, 800000)
        .with_id(105)
        .with_fill(ShapeFill::new("EF6C00"))
        .with_text("C");
    
    // Curved connector with diamond arrow
    let conn3 = Connector::curved(2500000, 3600000, 4000000, 3600000)
        .with_line(ConnectorLine::new("7B1FA2", 19050).with_dash(LineDash::DashDot))
        .with_arrows(ArrowType::Oval, ArrowType::Diamond);
    
    // Dotted connector
    let conn4 = Connector::straight(5500000, 3600000, 7000000, 3600000)
        .with_line(ConnectorLine::new("00838F", 12700).with_dash(LineDash::Dot))
        .with_end_arrow(ArrowType::Open);
    
    slides.push(
        SlideContent::new("Styled Connectors - Types, Arrows, Dashes")
            .add_shape(box1)
            .add_shape(box2)
            .add_shape(box3)
            .add_shape(box4)
            .add_shape(box5)
            .add_shape(box6)
            .add_connector(conn1)
            .add_connector(conn2)
            .add_connector(conn3)
            .add_connector(conn4)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 13: Images
    // =========================================================================
    println!("🖼️  Slide 13: Image Placeholders");
    
    let img1 = Image::new("logo.png", 2500000, 1800000, "png")
        .position(500000, 1600000);
    let img2 = Image::new("photo.jpg", 2500000, 1800000, "jpg")
        .position(3500000, 1600000);
    let img3 = Image::new("diagram.png", 2000000, 1800000, "png")
        .position(6500000, 1600000);
    
    slides.push(
        SlideContent::new("Image Placeholders")
            .add_image(img1)
            .add_image(img2)
            .add_image(img3)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 11: Advanced Table with Borders & Alignment (NEW)
    // =========================================================================
    println!("📊 Slide 11: Advanced Table (borders, alignment, merged cells)");
    
    // Build advanced table using generator's TableBuilder with alignment
    let advanced_table = TableBuilder::new(vec![2000000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2024 Financial Report").bold().background_color("1F4E79").text_color("FFFFFF").align_center().font_size(14),
            TableCell::new("").background_color("1F4E79"),
            TableCell::new("").background_color("1F4E79"),
            TableCell::new("").background_color("1F4E79"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Category").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Revenue").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Expenses").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Profit").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Product Sales").text_color("000000").align_left(),
            TableCell::new("$1,250,000").text_color("2E7D32").align_right(),
            TableCell::new("$450,000").text_color("C62828").align_right(),
            TableCell::new("$800,000").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Services").text_color("000000").align_left(),
            TableCell::new("$890,000").text_color("2E7D32").align_right(),
            TableCell::new("$320,000").text_color("C62828").align_right(),
            TableCell::new("$570,000").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Total").bold().background_color("E7E6E6").text_color("000000").align_left(),
            TableCell::new("$2,140,000").bold().background_color("E7E6E6").text_color("000000").align_right(),
            TableCell::new("$770,000").bold().background_color("E7E6E6").text_color("000000").align_right(),
            TableCell::new("$1,370,000").bold().background_color("C6EFCE").text_color("006100").align_right(),
        ]))
        .position(300000, 1600000)
        .build();
    
    slides.push(
        SlideContent::new("Financial Report - Advanced Table")
            .table(advanced_table)
            .title_color("1F4E79")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 12: Comparison Matrix Table (NEW)
    // =========================================================================
    println!("📊 Slide 12: Comparison Matrix Table");
    
    let comparison_table = TableBuilder::new(vec![2000000, 1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Feature").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Basic").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Pro").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Enterprise").bold().background_color("4472C4").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Storage").text_color("000000"),
            TableCell::new("5 GB").text_color("000000"),
            TableCell::new("50 GB").text_color("000000"),
            TableCell::new("Unlimited").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Users").text_color("000000"),
            TableCell::new("1").text_color("000000"),
            TableCell::new("10").text_color("000000"),
            TableCell::new("Unlimited").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Support").text_color("000000"),
            TableCell::new("Email").text_color("000000"),
            TableCell::new("24/7 Chat").text_color("000000"),
            TableCell::new("Dedicated").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("API Access").text_color("000000"),
            TableCell::new("No").text_color("C62828"),
            TableCell::new("Yes").text_color("2E7D32"),
            TableCell::new("Yes + Priority").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Price/month").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$9").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$29").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$99").bold().background_color("F2F2F2").text_color("000000"),
        ]))
        .position(500000, 1600000)
        .build();
    
    slides.push(
        SlideContent::new("Pricing Comparison Matrix")
            .table(comparison_table)
            .title_color("4472C4")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 13: Process Flow with Shapes (NEW - SmartArt-like)
    // =========================================================================
    println!("🔷 Slide 13: Process Flow (SmartArt-style)");
    
    // Create process flow using shapes
    let step1 = Shape::new(ShapeType::RoundedRectangle, 300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("1. Research");
    let arrow1 = Shape::new(ShapeType::RightArrow, 1800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step2 = Shape::new(ShapeType::RoundedRectangle, 2300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("2. Design");
    let arrow2 = Shape::new(ShapeType::RightArrow, 3800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step3 = Shape::new(ShapeType::RoundedRectangle, 4300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("3. Develop");
    let arrow3 = Shape::new(ShapeType::RightArrow, 5800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step4 = Shape::new(ShapeType::RoundedRectangle, 6300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("5B9BD5"))
        .with_text("4. Deploy");
    
    slides.push(
        SlideContent::new("Development Process Flow")
            .add_shape(step1)
            .add_shape(arrow1)
            .add_shape(step2)
            .add_shape(arrow2)
            .add_shape(step3)
            .add_shape(arrow3)
            .add_shape(step4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 14: Organization Chart with Shapes (NEW)
    // =========================================================================
    println!("🔷 Slide 14: Organization Chart");
    
    // CEO at top
    let ceo = Shape::new(ShapeType::RoundedRectangle, 3500000, 1400000, 2000000, 600000)
        .with_fill(ShapeFill::new("1F4E79"))
        .with_text("CEO");
    
    // Vertical line from CEO
    let line1 = Shape::new(ShapeType::Rectangle, 4450000, 2000000, 100000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // Horizontal connector
    let hline = Shape::new(ShapeType::Rectangle, 1950000, 2400000, 5100000, 50000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // CTO, CFO, COO
    let cto = Shape::new(ShapeType::RoundedRectangle, 1000000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("CTO");
    let cfo = Shape::new(ShapeType::RoundedRectangle, 3600000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("CFO");
    let coo = Shape::new(ShapeType::RoundedRectangle, 6200000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("COO");
    
    // Vertical lines to departments
    let vline1 = Shape::new(ShapeType::Rectangle, 1850000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let vline2 = Shape::new(ShapeType::Rectangle, 4450000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let vline3 = Shape::new(ShapeType::Rectangle, 7050000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // Teams under CTO
    let eng = Shape::new(ShapeType::Rectangle, 500000, 3300000, 1200000, 400000)
        .with_fill(ShapeFill::new("BDD7EE"))
        .with_text("Engineering");
    let product = Shape::new(ShapeType::Rectangle, 1800000, 3300000, 1200000, 400000)
        .with_fill(ShapeFill::new("BDD7EE"))
        .with_text("Product");
    
    slides.push(
        SlideContent::new("Organization Structure")
            .add_shape(ceo)
            .add_shape(line1)
            .add_shape(hline)
            .add_shape(cto)
            .add_shape(cfo)
            .add_shape(coo)
            .add_shape(vline1)
            .add_shape(vline2)
            .add_shape(vline3)
            .add_shape(eng)
            .add_shape(product)
            .title_color("1F4E79")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 15: PDCA Cycle Diagram (NEW)
    // =========================================================================
    println!("🔷 Slide 15: PDCA Cycle Diagram");
    
    // Four quadrants for PDCA
    let plan = Shape::new(ShapeType::RoundedRectangle, 1500000, 1600000, 2500000, 1500000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("PLAN\n\nDefine goals\nand strategy");
    let do_box = Shape::new(ShapeType::RoundedRectangle, 4500000, 1600000, 2500000, 1500000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("DO\n\nImplement\nthe plan");
    let check = Shape::new(ShapeType::RoundedRectangle, 4500000, 3300000, 2500000, 1500000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("CHECK\n\nMeasure\nresults");
    let act = Shape::new(ShapeType::RoundedRectangle, 1500000, 3300000, 2500000, 1500000)
        .with_fill(ShapeFill::new("FFC000"))
        .with_text("ACT\n\nAdjust and\nimprove");
    
    // Arrows between quadrants
    let arr1 = Shape::new(ShapeType::RightArrow, 4100000, 2100000, 300000, 300000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr2 = Shape::new(ShapeType::DownArrow, 5600000, 3200000, 300000, 200000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr3 = Shape::new(ShapeType::LeftArrow, 4100000, 3800000, 300000, 300000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr4 = Shape::new(ShapeType::UpArrow, 2600000, 3200000, 300000, 200000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    slides.push(
        SlideContent::new("PDCA Continuous Improvement Cycle")
            .add_shape(plan)
            .add_shape(do_box)
            .add_shape(check)
            .add_shape(act)
            .add_shape(arr1)
            .add_shape(arr2)
            .add_shape(arr3)
            .add_shape(arr4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 16: Pyramid Diagram (Maslow's Hierarchy) (NEW)
    // =========================================================================
    println!("🔷 Slide 16: Pyramid Diagram");
    
    // Build pyramid from bottom to top
    let level5 = Shape::new(ShapeType::Trapezoid, 500000, 4000000, 8000000, 600000)
        .with_fill(ShapeFill::new("C00000"))
        .with_text("Physiological Needs - Food, Water, Shelter");
    let level4 = Shape::new(ShapeType::Trapezoid, 1000000, 3400000, 7000000, 600000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Safety Needs - Security, Stability");
    let level3 = Shape::new(ShapeType::Trapezoid, 1500000, 2800000, 6000000, 600000)
        .with_fill(ShapeFill::new("FFC000"))
        .with_text("Love & Belonging - Relationships");
    let level2 = Shape::new(ShapeType::Trapezoid, 2000000, 2200000, 5000000, 600000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Esteem - Achievement, Respect");
    let level1 = Shape::new(ShapeType::Triangle, 2500000, 1500000, 4000000, 700000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Self-Actualization");
    
    slides.push(
        SlideContent::new("Maslow's Hierarchy of Needs")
            .add_shape(level5)
            .add_shape(level4)
            .add_shape(level3)
            .add_shape(level2)
            .add_shape(level1)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 17: Venn Diagram (NEW)
    // =========================================================================
    println!("🔷 Slide 17: Venn Diagram");
    
    // Three overlapping circles
    let circle1 = Shape::new(ShapeType::Ellipse, 1500000, 1800000, 3000000, 3000000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Skills");
    let circle2 = Shape::new(ShapeType::Ellipse, 3500000, 1800000, 3000000, 3000000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Passion");
    let circle3 = Shape::new(ShapeType::Ellipse, 2500000, 3200000, 3000000, 3000000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Market Need");
    
    // Center label
    let center = Shape::new(ShapeType::Ellipse, 3200000, 2800000, 1600000, 800000)
        .with_fill(ShapeFill::new("FFFFFF"))
        .with_text("IKIGAI");
    
    slides.push(
        SlideContent::new("Finding Your Ikigai - Venn Diagram")
            .add_shape(circle1)
            .add_shape(circle2)
            .add_shape(circle3)
            .add_shape(center)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 18: Timeline/Roadmap (NEW)
    // =========================================================================
    println!("📊 Slide 18: Project Timeline");
    
    let timeline_table = TableBuilder::new(vec![1500000, 1500000, 1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q2 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q3 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q4 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q1 2025").bold().background_color("4472C4").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Research\n& Planning").background_color("BDD7EE").text_color("1F497D"),
            TableCell::new("Design\nPhase").background_color("BDD7EE").text_color("1F497D"),
            TableCell::new("Development\nSprint 1-3").background_color("C6EFCE").text_color("006100"),
            TableCell::new("Testing\n& QA").background_color("FCE4D6").text_color("C65911"),
            TableCell::new("Launch\n& Support").background_color("E2EFDA").text_color("375623"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("✓ Complete").bold().text_color("2E7D32"),
            TableCell::new("✓ Complete").bold().text_color("2E7D32"),
            TableCell::new("In Progress").text_color("ED7D31"),
            TableCell::new("Planned").text_color("7F7F7F"),
            TableCell::new("Planned").text_color("7F7F7F"),
        ]))
        .position(300000, 2000000)
        .build();
    
    slides.push(
        SlideContent::new("Project Roadmap 2024-2025")
            .table(timeline_table)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 19: Dashboard Summary (NEW)
    // =========================================================================
    println!("🔷 Slide 19: Dashboard with KPIs");
    
    // KPI boxes
    let kpi1 = Shape::new(ShapeType::RoundedRectangle, 300000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Revenue\n\n$2.14M\n+15% YoY");
    let kpi2 = Shape::new(ShapeType::RoundedRectangle, 2500000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Customers\n\n12,450\n+22% YoY");
    let kpi3 = Shape::new(ShapeType::RoundedRectangle, 4700000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("NPS Score\n\n72\n+8 pts");
    let kpi4 = Shape::new(ShapeType::RoundedRectangle, 6900000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("5B9BD5"))
        .with_text("Retention\n\n94%\n+3% YoY");
    
    // Status indicators
    let status1 = Shape::new(ShapeType::Ellipse, 1800000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    let status2 = Shape::new(ShapeType::Ellipse, 4000000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    let status3 = Shape::new(ShapeType::Ellipse, 6200000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("FFC000"));
    let status4 = Shape::new(ShapeType::Ellipse, 8400000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    
    slides.push(
        SlideContent::new("Executive Dashboard - Q1 2024")
            .add_shape(kpi1)
            .add_shape(kpi2)
            .add_shape(kpi3)
            .add_shape(kpi4)
            .add_shape(status1)
            .add_shape(status2)
            .add_shape(status3)
            .add_shape(status4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 20: Summary Slide (NEW)
    // =========================================================================
    println!("📝 Slide 20: Summary with Speaker Notes");
    
    slides.push(
        SlideContent::new("Summary & Next Steps")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Completed: Research, Design, Initial Development")
            .add_bullet("In Progress: Sprint 3 Development")
            .add_bullet("Next: QA Testing Phase (Q4 2024)")
            .add_bullet("Launch Target: Q1 2025")
            .add_bullet("Key Risks: Resource constraints, Timeline pressure")
            .content_size(24)
            .notes("Speaker Notes:\n\n1. Emphasize the progress made\n2. Highlight key achievements\n3. Address any concerns about timeline\n4. Open for Q&A")
    );

    // =========================================================================
    // SLIDE 21: Bullet Styles (NEW v0.2.1)
    // =========================================================================
    println!("🔢 Slide 21: Bullet Styles (NEW)");
    
    // Numbered list
    slides.push(
        SlideContent::new("Bullet Styles - Numbered List")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .with_bullet_style(BulletStyle::Number)
            .add_bullet("First numbered item")
            .add_bullet("Second numbered item")
            .add_bullet("Third numbered item")
            .add_bullet("Fourth numbered item")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 22: Lettered Lists (NEW v0.2.1)
    // =========================================================================
    println!("🔤 Slide 22: Lettered Lists (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Lettered Lists")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_lettered("Option A - First choice")
            .add_lettered("Option B - Second choice")
            .add_lettered("Option C - Third choice")
            .add_lettered("Option D - Fourth choice")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 23: Roman Numerals (NEW v0.2.1)
    // =========================================================================
    println!("🏛️ Slide 23: Roman Numerals (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Roman Numerals")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .with_bullet_style(BulletStyle::RomanUpper)
            .add_bullet("Chapter I - Introduction")
            .add_bullet("Chapter II - Background")
            .add_bullet("Chapter III - Methodology")
            .add_bullet("Chapter IV - Results")
            .add_bullet("Chapter V - Conclusion")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 24: Custom Bullets (NEW v0.2.1)
    // =========================================================================
    println!("⭐ Slide 24: Custom Bullets (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Custom Characters")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_styled_bullet("Star bullet point", BulletStyle::Custom('★'))
            .add_styled_bullet("Arrow bullet point", BulletStyle::Custom('→'))
            .add_styled_bullet("Check bullet point", BulletStyle::Custom('✓'))
            .add_styled_bullet("Diamond bullet point", BulletStyle::Custom('◆'))
            .add_styled_bullet("Heart bullet point", BulletStyle::Custom('♥'))
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 25: Sub-bullets / Hierarchy (NEW v0.2.1)
    // =========================================================================
    println!("📊 Slide 25: Sub-bullets Hierarchy (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Hierarchical Lists")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Main Topic 1")
            .add_sub_bullet("Supporting detail A")
            .add_sub_bullet("Supporting detail B")
            .add_bullet("Main Topic 2")
            .add_sub_bullet("Supporting detail C")
            .add_sub_bullet("Supporting detail D")
            .add_bullet("Main Topic 3")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 26: Text Enhancements (NEW v0.2.1)
    // =========================================================================
    println!("✏️ Slide 26: Text Enhancements (NEW)");
    
    // Use BulletPoint with formatting
    let strikethrough_bullet = BulletPoint::new("Strikethrough: This text is crossed out").strikethrough();
    let highlight_bullet = BulletPoint::new("Highlight: Yellow background for emphasis").highlight("FFFF00");
    let subscript_bullet = BulletPoint::new("Subscript: H₂O - for chemical formulas").subscript();
    let superscript_bullet = BulletPoint::new("Superscript: x² - for math expressions").superscript();
    let bold_colored = BulletPoint::new("Combined: Bold + Red color").bold().color("FF0000");
    
    let mut text_enhancements_slide = SlideContent::new("Text Enhancements - New Formatting")
        .layout(SlideLayout::TitleAndContent)
        .title_color("1F497D")
        .title_bold(true)
        .content_size(24);
    text_enhancements_slide.bullets.push(strikethrough_bullet);
    text_enhancements_slide.bullets.push(highlight_bullet);
    text_enhancements_slide.bullets.push(subscript_bullet);
    text_enhancements_slide.bullets.push(superscript_bullet);
    text_enhancements_slide.bullets.push(bold_colored);
    
    slides.push(text_enhancements_slide);

    // =========================================================================
    // SLIDE 27: Font Size Presets (NEW v0.2.1)
    // =========================================================================
    println!("🔤 Slide 27: Font Size Presets (NEW)");
    
    // Demonstrate different font sizes per bullet
    let large_bullet = BulletPoint::new(&format!("LARGE: {}pt - Extra large text", font_sizes::LARGE)).font_size(font_sizes::LARGE);
    let heading_bullet = BulletPoint::new(&format!("HEADING: {}pt - Section headers", font_sizes::HEADING)).font_size(font_sizes::HEADING);
    let body_bullet = BulletPoint::new(&format!("BODY: {}pt - Regular content", font_sizes::BODY)).font_size(font_sizes::BODY);
    let small_bullet = BulletPoint::new(&format!("SMALL: {}pt - Smaller text", font_sizes::SMALL)).font_size(font_sizes::SMALL);
    let caption_bullet = BulletPoint::new(&format!("CAPTION: {}pt - Captions and notes", font_sizes::CAPTION)).font_size(font_sizes::CAPTION);
    
    let mut font_size_slide = SlideContent::new("Font Size Presets - Each line different size")
        .layout(SlideLayout::TitleAndContent)
        .title_color("1F497D")
        .title_bold(true)
        .title_size(font_sizes::TITLE);
    font_size_slide.bullets.push(large_bullet);
    font_size_slide.bullets.push(heading_bullet);
    font_size_slide.bullets.push(body_bullet);
    font_size_slide.bullets.push(small_bullet);
    font_size_slide.bullets.push(caption_bullet);
    
    slides.push(font_size_slide);

    // =========================================================================
    // SLIDE 28: Theme Colors (NEW v0.2.1)
    // =========================================================================
    println!("🎨 Slide 28: Theme Colors (NEW)");
    
    // Create shapes with theme colors
    let corporate_shape = Shape::new(ShapeType::Rectangle, 500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::CORPORATE.primary))
        .with_text("Corporate");
    
    let modern_shape = Shape::new(ShapeType::Rectangle, 2500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::MODERN.primary))
        .with_text("Modern");
    
    let vibrant_shape = Shape::new(ShapeType::Rectangle, 4500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::VIBRANT.primary))
        .with_text("Vibrant");
    
    let dark_shape = Shape::new(ShapeType::Rectangle, 6500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::DARK.primary))
        .with_text("Dark");
    
    let nature_shape = Shape::new(ShapeType::Rectangle, 500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::NATURE.primary))
        .with_text("Nature");
    
    let tech_shape = Shape::new(ShapeType::Rectangle, 2500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::TECH.primary))
        .with_text("Tech");
    
    let carbon_shape = Shape::new(ShapeType::Rectangle, 4500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::CARBON.primary))
        .with_text("Carbon");
    
    slides.push(
        SlideContent::new("Theme Color Palettes")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_shape(corporate_shape)
            .add_shape(modern_shape)
            .add_shape(vibrant_shape)
            .add_shape(dark_shape)
            .add_shape(nature_shape)
            .add_shape(tech_shape)
            .add_shape(carbon_shape)
    );

    // =========================================================================
    // SLIDE 29: Material & Carbon Design Colors (NEW v0.2.1)
    // =========================================================================
    println!("🌈 Slide 29: Material & Carbon Colors (NEW)");
    
    // Material Design colors
    let material_red = Shape::new(ShapeType::Rectangle, 500000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_RED))
        .with_text("M-Red");
    
    let material_blue = Shape::new(ShapeType::Rectangle, 1900000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_BLUE))
        .with_text("M-Blue");
    
    let material_green = Shape::new(ShapeType::Rectangle, 3300000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_GREEN))
        .with_text("M-Green");
    
    let material_orange = Shape::new(ShapeType::Rectangle, 4700000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_ORANGE))
        .with_text("M-Orange");
    
    let material_purple = Shape::new(ShapeType::Rectangle, 6100000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_PURPLE))
        .with_text("M-Purple");
    
    // Carbon Design colors
    let carbon_blue = Shape::new(ShapeType::Rectangle, 500000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_BLUE_60))
        .with_text("C-Blue");
    
    let carbon_green = Shape::new(ShapeType::Rectangle, 1900000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_GREEN_50))
        .with_text("C-Green");
    
    let carbon_red = Shape::new(ShapeType::Rectangle, 3300000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_RED_60))
        .with_text("C-Red");
    
    let carbon_purple = Shape::new(ShapeType::Rectangle, 4700000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_PURPLE_60))
        .with_text("C-Purple");
    
    let carbon_gray = Shape::new(ShapeType::Rectangle, 6100000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_GRAY_100))
        .with_text("C-Gray");
    
    slides.push(
        SlideContent::new("Material & Carbon Design Colors")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_shape(material_red)
            .add_shape(material_blue)
            .add_shape(material_green)
            .add_shape(material_orange)
            .add_shape(material_purple)
            .add_shape(carbon_blue)
            .add_shape(carbon_green)
            .add_shape(carbon_red)
            .add_shape(carbon_purple)
            .add_shape(carbon_gray)
    );

    // =========================================================================
    // SLIDE 30: Image from Base64 (NEW v0.2.1)
    // =========================================================================
    println!("🖼️ Slide 30: Image from Base64 (NEW)");
    
    // 1x1 red PNG pixel in base64
    let _red_pixel_base64 = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8DwHwAFBQIAX8jx0gAAAABJRU5ErkJggg==";
    
    // Create image from base64 (demonstrating the API)
    let _base64_image = ImageBuilder::from_base64(_red_pixel_base64, 914400, 914400, "PNG")
        .position(4000000, 2500000)
        .build();
    
    slides.push(
        SlideContent::new("Image Loading - New Methods")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Image::new(path) - Load from file path")
            .add_bullet("Image::from_base64(data) - Load from base64 string")
            .add_bullet("Image::from_bytes(data) - Load from raw bytes")
            .add_bullet("ImageBuilder for fluent API configuration")
            .add_bullet("Built-in base64 decoder (no external deps)")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 31: Feature Summary (NEW v0.2.1)
    // =========================================================================
    println!("📋 Slide 31: v0.2.1 Feature Summary (NEW)");
    
    slides.push(
        SlideContent::new("New Features in v0.2.1")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_numbered("BulletStyle: Number, Letter, Roman, Custom")
            .add_numbered("TextFormat: Strikethrough, Highlight")
            .add_numbered("TextFormat: Subscript, Superscript")
            .add_numbered("Font size presets in prelude")
            .add_numbered("Image::from_base64 and from_bytes")
            .add_numbered("Theme color palettes (7 themes)")
            .add_numbered("Material & Carbon Design colors")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 32: Slide Show Settings - Comparison Table (REAL: embedded in presProps.xml)
    // =========================================================================
    println!("🎬 Slide 34: Slide Show Settings (Visual)");

    let show_speaker = SlideShowSettings::new().pen_color(PenColor::red());
    let show_kiosk = SlideShowSettings::kiosk();
    let _show_range = SlideShowSettings::new()
        .show_type(ShowType::Browsed)
        .slide_range(SlideRange::Range { start: 1, end: 10 })
        .without_animation(true);
    let _speaker_xml = show_speaker.to_xml();
    let _kiosk_xml = show_kiosk.to_xml();

    let show_table = TableBuilder::new(vec![2000000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Setting").bold().background_color("1F4E79").text_color("FFFFFF"),
            TableCell::new("Speaker").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Kiosk").bold().background_color("ED7D31").text_color("FFFFFF"),
            TableCell::new("Browsed").bold().background_color("70AD47").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Loop").bold().background_color("D6E4F0"),
            TableCell::new("No"), TableCell::new("Yes").bold().text_color("2E7D32"),
            TableCell::new("No"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Narration").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("No").text_color("C62828"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Animation").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("Yes"),
            TableCell::new("No").text_color("C62828"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Timings").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("Auto"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Slide Range").bold().background_color("D6E4F0"),
            TableCell::new("All"), TableCell::new("All"),
            TableCell::new("1-10"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Pen Color").bold().background_color("D6E4F0"),
            TableCell::new("Red").text_color("FF0000"),
            TableCell::new("Red").text_color("FF0000"),
            TableCell::new("Red").text_color("FF0000"),
        ]))
        .position(300000, 1600000)
        .build();

    // Mode icons
    let icon_speaker = Shape::new(ShapeType::RoundedRectangle, 300000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Speaker: Full control");
    let icon_kiosk = Shape::new(ShapeType::RoundedRectangle, 3100000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Kiosk: Auto-loop");
    let icon_browsed = Shape::new(ShapeType::RoundedRectangle, 5900000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Browsed: Scrollbar");

    slides.push(
        SlideContent::new("Slide Show Settings - Mode Comparison")
            .table(show_table)
            .add_shape(icon_speaker)
            .add_shape(icon_kiosk)
            .add_shape(icon_browsed)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 35: Print Settings - Visual Handout Grid
    // =========================================================================
    println!("🖨️  Slide 35: Print Settings & Handouts (Visual)");

    let print = PrintSettings::new()
        .print_what(PrintWhat::Handouts)
        .color_mode(PrintColorMode::Grayscale)
        .handout_layout(GenHandoutLayout::SlidesPerPage6)
        .frame_slides(true)
        .header("Q1 2025 Strategy Review")
        .footer("Confidential - Internal Use Only")
        .print_date(true)
        .print_page_numbers(true);
    let _prnpr_xml = print.to_prnpr_xml();
    let _handout_xml = print.to_handout_master_xml();

    // Visual: 6-slide handout grid (2 cols x 3 rows)
    let hdr = Shape::new(ShapeType::Rectangle, 300000, 1500000, 4200000, 300000)
        .with_fill(ShapeFill::new("E7E6E6"))
        .with_text("Q1 2025 Strategy Review");
    // Row 1
    let s1 = Shape::new(ShapeType::Rectangle, 400000, 2000000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 1");
    let s2 = Shape::new(ShapeType::Rectangle, 2500000, 2000000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 2");
    // Row 2
    let s3 = Shape::new(ShapeType::Rectangle, 400000, 3200000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 3");
    let s4 = Shape::new(ShapeType::Rectangle, 2500000, 3200000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 4");
    // Row 3
    let s5 = Shape::new(ShapeType::Rectangle, 400000, 4400000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 5");
    let s6 = Shape::new(ShapeType::Rectangle, 2500000, 4400000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 6");
    let ftr = Shape::new(ShapeType::Rectangle, 300000, 5600000, 4200000, 300000)
        .with_fill(ShapeFill::new("E7E6E6"))
        .with_text("Confidential - Internal Use Only");

    // Settings summary table on the right
    let print_table = TableBuilder::new(vec![1800000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Print Settings").bold().background_color("1F4E79").text_color("FFFFFF"),
            TableCell::new("").background_color("1F4E79"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Print What").bold().background_color("D6E4F0"),
            TableCell::new("Handouts"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Color Mode").bold().background_color("D6E4F0"),
            TableCell::new("Grayscale"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Layout").bold().background_color("D6E4F0"),
            TableCell::new("6 slides/page"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Frame Slides").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Date").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Page Numbers").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .position(5000000, 1800000)
        .build();

    slides.push(
        SlideContent::new("Print Handout - 6 Slides Per Page")
            .table(print_table)
            .add_shape(hdr)
            .add_shape(s1).add_shape(s2)
            .add_shape(s3).add_shape(s4)
            .add_shape(s5).add_shape(s6)
            .add_shape(ftr)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 36: Advanced Table Merging - Actual Merged Table
    // =========================================================================
    println!("📊 Slide 36: Advanced Table Merging (Visual)");

    // Use TableMergeMap to compute states, then build a visual table
    let mut merge_map = TableMergeMap::new(5, 4);
    merge_map.merge_cells(0, 0, 1, 4).unwrap(); // Title row spans all 4 cols
    merge_map.merge_cells(1, 0, 2, 1).unwrap(); // "Products" spans 2 rows
    merge_map.merge_cells(3, 0, 2, 1).unwrap(); // "Services" spans 2 rows

    // Show merge state labels
    let state_00 = merge_map.cell_state(0, 0); // Anchor gridSpan=4
    let state_01 = merge_map.cell_state(0, 1); // HMerge
    let state_10 = merge_map.cell_state(1, 0); // Anchor rowSpan=2
    let state_20 = merge_map.cell_state(2, 0); // VMerge
    println!("   ├── (0,0): {}", state_00.to_xml_attrs().trim());
    println!("   ├── (0,1): {}", state_01.to_xml_attrs().trim());
    println!("   ├── (1,0): {}", state_10.to_xml_attrs().trim());
    println!("   └── (2,0): {}", state_20.to_xml_attrs().trim());

    // Build the table with REAL merge attributes (gridSpan, rowSpan, hMerge, vMerge)
    let merge_table = TableBuilder::new(vec![1500000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2025 Revenue Report").bold().background_color("1F4E79").text_color("FFFFFF").grid_span(4),
            TableCell::new("").background_color("1F4E79").h_merge(),
            TableCell::new("").background_color("1F4E79").h_merge(),
            TableCell::new("").background_color("1F4E79").h_merge(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Products").bold().background_color("BDD7EE").text_color("1F497D").row_span(2),
            TableCell::new("Hardware").background_color("E2EFDA"),
            TableCell::new("$450,000").text_color("2E7D32").align_right(),
            TableCell::new("+12%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("").background_color("BDD7EE").v_merge(),
            TableCell::new("Software").background_color("E2EFDA"),
            TableCell::new("$680,000").text_color("2E7D32").align_right(),
            TableCell::new("+25%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Services").bold().background_color("FCE4D6").text_color("C65911").row_span(2),
            TableCell::new("Consulting").background_color("FFF2CC"),
            TableCell::new("$320,000").text_color("2E7D32").align_right(),
            TableCell::new("+8%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("").background_color("FCE4D6").v_merge(),
            TableCell::new("Support").background_color("FFF2CC"),
            TableCell::new("$190,000").text_color("2E7D32").align_right(),
            TableCell::new("+5%").bold().text_color("2E7D32").align_right(),
        ]))
        .position(300000, 1600000)
        .build();

    // Legend shapes
    let legend_anchor = Shape::new(ShapeType::RoundedRectangle, 300000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Anchor (gridSpan/rowSpan)");
    let legend_hmerge = Shape::new(ShapeType::RoundedRectangle, 2500000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("hMerge (col covered)");
    let legend_vmerge = Shape::new(ShapeType::RoundedRectangle, 4700000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("vMerge (row covered)");
    let legend_normal = Shape::new(ShapeType::RoundedRectangle, 6900000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"))
        .with_text("Normal (no merge)");

    slides.push(
        SlideContent::new("Advanced Table Merging - Merged Cells")
            .table(merge_table)
            .add_shape(legend_anchor)
            .add_shape(legend_hmerge)
            .add_shape(legend_vmerge)
            .add_shape(legend_normal)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // Build PresentationSettings with all advanced features
    // =========================================================================
    println!("\n⚙️  Building Presentation Settings...");

    // Slide show settings (embedded in presProps.xml as <p:showPr>)
    let show_settings = SlideShowSettings::new()
        .show_type(ShowType::Speaker)
        .pen_color(PenColor::red())
        .use_timings(true);
    println!("   ├── Slide Show: Speaker mode, red pen, timings enabled");
    println!("   │   └── XML: {} bytes", show_settings.to_xml().len());

    // Print settings (embedded in presProps.xml as <p:prnPr>)
    let print_settings = PrintSettings::new()
        .print_what(PrintWhat::Handouts)
        .color_mode(PrintColorMode::Grayscale)
        .handout_layout(GenHandoutLayout::SlidesPerPage6)
        .frame_slides(true)
        .header("Q1 2025 Strategy Review")
        .footer("Confidential - Internal Use Only")
        .print_date(true)
        .print_page_numbers(true);
    println!("   └── Print: Handouts, 6/page, grayscale, framed");
    println!("       └── XML: {} bytes", print_settings.to_prnpr_xml().len());

    let pres_settings = PresentationSettings::new()
        .slide_show(show_settings)
        .print(print_settings);
    println!("   All settings configured → presProps.xml");

    // =========================================================================
    // Generate PPTX with real integrated features
    // =========================================================================
    println!("\n📦 Generating PPTX with integrated features...");
    let pptx_data = create_pptx_with_settings(
        "PPTX-RS Element Showcase",
        slides.clone(),
        Some(pres_settings),
    )?;
    fs::write("comprehensive_demo.pptx", &pptx_data)?;
    println!("   ✓ Created comprehensive_demo.pptx ({} slides, {} bytes)", 
             slides.len(), pptx_data.len());

    // =========================================================================
    // Package Analysis - Demonstrate Reading
    // =========================================================================
    println!("\n📖 Package Analysis (Read Capability):");
    
    let package = Package::open("comprehensive_demo.pptx")?;
    let paths = package.part_paths();
    
    let slide_count = paths.iter()
        .filter(|p| p.starts_with("ppt/slides/slide") && p.ends_with(".xml"))
        .count();
    
    println!("   ├── Total parts: {}", package.part_count());
    println!("   ├── Slides: {}", slide_count);
    println!("   └── Package opened and analyzed successfully");

    // =========================================================================
    // NEW: Parts API Demonstration
    // =========================================================================
    println!("\n🧩 Parts API Demonstration:");
    
    // SlideLayoutPart - 11 layout types
    println!("   ┌── SlideLayoutPart (11 layout types):");
    let layouts = [
        LayoutType::Title,
        LayoutType::TitleAndContent,
        LayoutType::SectionHeader,
        LayoutType::TwoContent,
        LayoutType::Comparison,
        LayoutType::TitleOnly,
        LayoutType::Blank,
        LayoutType::ContentWithCaption,
        LayoutType::PictureWithCaption,
        LayoutType::TitleAndVerticalText,
        LayoutType::VerticalTitleAndText,
    ];
    for (i, layout_type) in layouts.iter().enumerate() {
        let layout = SlideLayoutPart::new(i + 1, *layout_type);
        if i < 3 {
            println!("   │   ├── {}: {} ({})", i + 1, layout_type.name(), layout.path());
        }
    }
    println!("   │   └── ... and {} more layout types", layouts.len() - 3);
    
    // SlideMasterPart
    println!("   ├── SlideMasterPart:");
    let mut master = SlideMasterPart::new(1);
    master.set_name("Custom Master");
    master.add_layout_rel_id("rId2");
    master.add_layout_rel_id("rId3");
    println!("   │   ├── Name: {}", master.name());
    println!("   │   ├── Path: {}", master.path());
    println!("   │   └── Layouts: {} linked", master.layout_rel_ids().len());
    
    // ThemePart - Colors and Fonts
    println!("   ├── ThemePart (colors & fonts):");
    let mut theme = ThemePart::new(1);
    theme.set_name("Corporate Theme");
    theme.set_major_font("Arial");
    theme.set_minor_font("Calibri");
    theme.set_color("accent1", "FF5733");
    theme.set_color("accent2", "33FF57");
    let theme_xml = theme.to_xml()?;
    println!("   │   ├── Name: {}", theme.name());
    println!("   │   ├── Major Font: Arial");
    println!("   │   ├── Minor Font: Calibri");
    println!("   │   └── XML size: {} bytes", theme_xml.len());
    
    // NotesSlidePart - Speaker notes
    println!("   ├── NotesSlidePart (speaker notes):");
    let notes = NotesSlidePart::with_text(1, "Remember to:\n- Introduce yourself\n- Explain the agenda\n- Ask for questions");
    let notes_xml = notes.to_xml()?;
    println!("   │   ├── Path: {}", notes.path());
    println!("   │   ├── Text: \"{}...\"", &notes.notes_text()[..20.min(notes.notes_text().len())]);
    println!("   │   └── XML size: {} bytes", notes_xml.len());
    
    // AppPropertiesPart - Application metadata
    println!("   ├── AppPropertiesPart (metadata):");
    let mut app_props = AppPropertiesPart::new();
    app_props.set_company("Acme Corporation");
    app_props.set_slides(slides.len() as u32);
    let app_xml = app_props.to_xml()?;
    println!("   │   ├── Company: Acme Corporation");
    println!("   │   ├── Slides: {}", slides.len());
    println!("   │   └── XML size: {} bytes", app_xml.len());
    
    // MediaPart - Video/Audio formats
    println!("   ├── MediaPart (10 media formats):");
    println!("   │   ├── Video: mp4, webm, avi, wmv, mov");
    println!("   │   ├── Audio: mp3, wav, wma, m4a, ogg");
    let sample_media = MediaPart::new(1, MediaFormat::Mp4, vec![0; 100]);
    println!("   │   └── Sample: {} ({})", sample_media.path(), sample_media.format().mime_type());
    
    // TablePart - Table with formatting
    println!("   ├── TablePart (cell formatting):");
    let table_part = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Header 1").bold().background("4472C4"),
            TableCellPart::new("Header 2").bold().background("4472C4"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Data 1").color("333333"),
            TableCellPart::new("Data 2").italic(),
        ]))
        .position(EMU_PER_INCH, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 6, EMU_PER_INCH * 2);
    let table_xml = table_part.to_slide_xml(10);
    println!("   │   ├── Rows: {}", table_part.rows.len());
    println!("   │   ├── Features: bold, italic, colors, backgrounds");
    println!("   │   └── XML size: {} bytes", table_xml.len());
    
    // ContentTypesPart
    println!("   └── ContentTypesPart:");
    let mut content_types = ContentTypesPart::new();
    content_types.add_presentation();
    content_types.add_slide(1);
    content_types.add_slide_layout(1);
    content_types.add_slide_master(1);
    content_types.add_theme(1);
    content_types.add_core_properties();
    content_types.add_app_properties();
    let ct_xml = content_types.to_xml()?;
    println!("       ├── Path: {}", content_types.path());
    println!("       └── XML size: {} bytes", ct_xml.len());

    // =========================================================================
    // NEW: Elements API Demonstration
    // =========================================================================
    println!("\n🎨 Elements API Demonstration:");
    
    // Color types
    println!("   ┌── Color Types:");
    let rgb = RgbColor::new(255, 87, 51);
    let rgb_hex = RgbColor::from_hex("#4472C4").unwrap();
    let scheme = SchemeColor::Accent1;
    let color = Color::rgb(100, 149, 237);
    println!("   │   ├── RgbColor::new(255, 87, 51) → {}", rgb.to_hex());
    println!("   │   ├── RgbColor::from_hex(\"#4472C4\") → {}", rgb_hex.to_hex());
    println!("   │   ├── SchemeColor::Accent1 → {}", scheme.as_str());
    println!("   │   └── Color::rgb(100, 149, 237) → XML: {}", color.to_xml().chars().take(30).collect::<String>());
    
    // Position and Size
    println!("   ├── Position & Size (EMU units):");
    let pos = Position::from_inches(1.0, 2.0);
    let size = Size::from_inches(4.0, 3.0);
    println!("   │   ├── Position::from_inches(1.0, 2.0) → x={}, y={}", pos.x, pos.y);
    println!("   │   ├── Size::from_inches(4.0, 3.0) → w={}, h={}", size.width, size.height);
    println!("   │   └── EMU_PER_INCH = {}", EMU_PER_INCH);
    
    // Transform
    println!("   └── Transform (position + size + rotation):");
    let transform = Transform::from_inches(1.0, 1.5, 3.0, 2.0).with_rotation(45.0);
    let transform_xml = transform.to_xml();
    println!("       ├── Transform::from_inches(1.0, 1.5, 3.0, 2.0)");
    println!("       ├── .with_rotation(45.0)");
    println!("       └── XML: {}...", &transform_xml[..50.min(transform_xml.len())]);

    // =========================================================================
    // NEW: Advanced Features Demonstration
    // =========================================================================
    println!("\n🚀 Advanced Features Demonstration:");

    // -------------------------------------------------------------------------
    // Complex Table Examples
    // -------------------------------------------------------------------------
    println!("   ┌── Complex Table Examples:");
    
    // Example 1: Financial Report Table
    println!("   │   ┌── Financial Report Table (5x4 with formatting):");
    let financial_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Q1 2024 Financial Summary")
                .col_span(4)
                .bold()
                .center()
                .background("1F4E79")
                .color("FFFFFF")
                .font_size(14)
                .font("Arial Black"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Category").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Revenue").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Expenses").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Profit").bold().center().background("2E75B6").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Product Sales").align(HorizontalAlign::Left),
            TableCellPart::new("$1,250,000").align(HorizontalAlign::Right).color("2E7D32"),
            TableCellPart::new("$450,000").align(HorizontalAlign::Right).color("C62828"),
            TableCellPart::new("$800,000").align(HorizontalAlign::Right).bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Services").align(HorizontalAlign::Left),
            TableCellPart::new("$890,000").align(HorizontalAlign::Right).color("2E7D32"),
            TableCellPart::new("$320,000").align(HorizontalAlign::Right).color("C62828"),
            TableCellPart::new("$570,000").align(HorizontalAlign::Right).bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Total").bold().background("E7E6E6"),
            TableCellPart::new("$2,140,000").bold().align(HorizontalAlign::Right).background("E7E6E6"),
            TableCellPart::new("$770,000").bold().align(HorizontalAlign::Right).background("E7E6E6"),
            TableCellPart::new("$1,370,000").bold().align(HorizontalAlign::Right).background("C6EFCE").color("006100"),
        ]))
        .position(EMU_PER_INCH / 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 8, EMU_PER_INCH * 3);
    let fin_xml = financial_table.to_slide_xml(100);
    println!("   │   │   ├── Merged header spanning 4 columns");
    println!("   │   │   ├── Color-coded values (green=positive, red=negative)");
    println!("   │   │   ├── Custom fonts and sizes");
    println!("   │   │   └── XML: {} bytes", fin_xml.len());

    // Example 2: Comparison Matrix
    println!("   │   ├── Comparison Matrix (features vs products):");
    let matrix_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Feature").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Basic").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Pro").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Enterprise").bold().center().background("4472C4").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Storage").align(HorizontalAlign::Left),
            TableCellPart::new("5 GB").center(),
            TableCellPart::new("50 GB").center(),
            TableCellPart::new("Unlimited").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Users").align(HorizontalAlign::Left),
            TableCellPart::new("1").center(),
            TableCellPart::new("10").center(),
            TableCellPart::new("Unlimited").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Support").align(HorizontalAlign::Left),
            TableCellPart::new("Email").center(),
            TableCellPart::new("24/7 Chat").center(),
            TableCellPart::new("Dedicated").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Price/mo").bold().background("F2F2F2"),
            TableCellPart::new("$9").center().bold().background("F2F2F2"),
            TableCellPart::new("$29").center().bold().background("F2F2F2"),
            TableCellPart::new("$99").center().bold().background("F2F2F2"),
        ]));
    println!("   │   │   └── 5x4 matrix with alternating styles");

    // Example 3: Schedule/Timeline Table
    println!("   │   └── Schedule Table (with row spans):");
    let schedule_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Time").bold().center().background("70AD47").color("FFFFFF"),
            TableCellPart::new("Monday").bold().center().background("70AD47").color("FFFFFF"),
            TableCellPart::new("Tuesday").bold().center().background("70AD47").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("9:00 AM").center().background("E2EFDA"),
            TableCellPart::new("Team Standup").center().row_span(2).valign(VerticalAlign::Middle).background("BDD7EE"),
            TableCellPart::new("Code Review").center(),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("10:00 AM").center().background("E2EFDA"),
            TableCellPart::merged(),
            TableCellPart::new("Sprint Planning").center().background("FCE4D6"),
        ]));
    println!("   │       └── Row spans for multi-hour events");

    // -------------------------------------------------------------------------
    // Complex Animation Sequences
    // -------------------------------------------------------------------------
    println!("   ├── Complex Animation Sequences:");
    
    // Sequence 1: Title entrance with staggered content
    println!("   │   ┌── Staggered Entrance Sequence:");
    let title_anim = Animation::new(2, AnimationEffect::Fade)
        .trigger(AnimationTrigger::OnClick)
        .duration(500);
    let content1 = Animation::new(3, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(200);
    let content2 = Animation::new(4, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(100);
    let content3 = Animation::new(5, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(100);
    let staggered = SlideAnimations::new()
        .add(title_anim)
        .add(content1)
        .add(content2)
        .add(content3)
        .transition(SlideTransition::new(TransitionEffect::Push).direction(AnimationDirection::Left).duration(750));
    let staggered_xml = staggered.to_timing_xml()?;
    println!("   │   │   ├── Title: Fade on click");
    println!("   │   │   ├── Content 1-3: FlyIn with 100ms stagger");
    println!("   │   │   ├── Transition: Push from left (750ms)");
    println!("   │   │   └── XML: {} bytes", staggered_xml.len());

    // Sequence 2: Emphasis and exit
    println!("   │   ├── Emphasis + Exit Sequence:");
    let emphasis = Animation::new(6, AnimationEffect::Pulse)
        .trigger(AnimationTrigger::OnClick)
        .duration(1000)
        .repeat(3);
    let exit = Animation::new(6, AnimationEffect::FadeOut)
        .trigger(AnimationTrigger::AfterPrevious)
        .duration(500);
    let emphasis_seq = SlideAnimations::new()
        .add(emphasis)
        .add(exit);
    println!("   │   │   ├── Pulse 3x on click, then fade out");
    println!("   │   │   └── Same shape, sequential effects");

    // Sequence 3: Motion path
    println!("   │   └── Motion Path Animation:");
    let motion = Animation::new(7, AnimationEffect::Lines)
        .trigger(AnimationTrigger::OnClick)
        .duration(2000);
    println!("   │       └── Custom path: Lines, Arcs, Turns, Loops");

    // -------------------------------------------------------------------------
    // SmartArt Combinations
    // -------------------------------------------------------------------------
    println!("   ├── SmartArt Layout Examples:");
    
    // Process flow
    println!("   │   ┌── Process Flow (5 steps):");
    let process = SmartArtPart::new(1, SmartArtLayout::BasicProcess)
        .add_items(vec!["Research", "Design", "Develop", "Test", "Deploy"])
        .position(EMU_PER_INCH / 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 8, EMU_PER_INCH * 2);
    println!("   │   │   └── {} nodes in horizontal flow", process.nodes().len());

    // Organization chart
    println!("   │   ├── Organization Chart:");
    let org = SmartArtPart::new(2, SmartArtLayout::OrgChart)
        .add_items(vec!["CEO", "CTO", "CFO", "VP Engineering", "VP Sales"]);
    println!("   │   │   └── Hierarchical structure with {} positions", org.nodes().len());

    // Cycle diagram
    println!("   │   ├── Cycle Diagram:");
    let cycle = SmartArtPart::new(3, SmartArtLayout::BasicCycle)
        .add_items(vec!["Plan", "Do", "Check", "Act"]);
    println!("   │   │   └── PDCA cycle with {} phases", cycle.nodes().len());

    // Venn diagram
    println!("   │   ├── Venn Diagram:");
    let venn = SmartArtPart::new(4, SmartArtLayout::BasicVenn)
        .add_items(vec!["Skills", "Passion", "Market Need"]);
    println!("   │   │   └── 3-circle Venn for Ikigai concept");

    // Pyramid
    println!("   │   └── Pyramid:");
    let pyramid = SmartArtPart::new(5, SmartArtLayout::BasicPyramid)
        .add_items(vec!["Self-Actualization", "Esteem", "Love/Belonging", "Safety", "Physiological"]);
    println!("   │       └── Maslow's hierarchy with {} levels", pyramid.nodes().len());

    // -------------------------------------------------------------------------
    // 3D Model Configurations
    // -------------------------------------------------------------------------
    println!("   ├── 3D Model Configurations:");
    
    // Product showcase
    println!("   │   ┌── Product Showcase:");
    let product_3d = Model3DPart::new(1, Model3DFormat::Glb, vec![0; 100])
        .camera(CameraPreset::IsometricTopUp)
        .rotation(0.0, 45.0, 0.0)
        .zoom(1.2)
        .position(EMU_PER_INCH * 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 4, EMU_PER_INCH * 4);
    println!("   │   │   ├── Camera: Isometric top-up view");
    println!("   │   │   ├── Rotation: 45° Y-axis for best angle");
    println!("   │   │   └── Zoom: 1.2x for detail");

    // Architectural model
    println!("   │   ├── Architectural Model:");
    let arch_3d = Model3DPart::new(2, Model3DFormat::Gltf, vec![0; 100])
        .camera(CameraPreset::Front)
        .rotation(15.0, -30.0, 0.0)
        .ambient_light("FFFFCC");
    println!("   │   │   ├── Camera: Front view with tilt");
    println!("   │   │   └── Ambient: Warm lighting (FFFFCC)");

    // Technical diagram
    println!("   │   └── Technical Diagram:");
    let tech_3d = Model3DPart::new(3, Model3DFormat::Obj, vec![0; 100])
        .camera(CameraPreset::IsometricOffAxis1Top)
        .rotation(0.0, 0.0, 0.0);
    println!("   │       └── Camera: Off-axis isometric for exploded view");

    // -------------------------------------------------------------------------
    // Theme + Master + Layout Combination
    // -------------------------------------------------------------------------
    println!("   ├── Theme + Master + Layout Integration:");
    
    // Corporate theme
    let mut corp_theme = ThemePart::new(1);
    corp_theme.set_name("Corporate Blue");
    corp_theme.set_major_font("Segoe UI");
    corp_theme.set_minor_font("Segoe UI Light");
    corp_theme.set_color("dk1", "000000");
    corp_theme.set_color("lt1", "FFFFFF");
    corp_theme.set_color("dk2", "1F497D");
    corp_theme.set_color("lt2", "EEECE1");
    corp_theme.set_color("accent1", "4472C4");
    corp_theme.set_color("accent2", "ED7D31");
    corp_theme.set_color("accent3", "A5A5A5");
    corp_theme.set_color("accent4", "FFC000");
    corp_theme.set_color("accent5", "5B9BD5");
    corp_theme.set_color("accent6", "70AD47");
    let theme_xml = corp_theme.to_xml()?;
    println!("   │   ├── Theme: Corporate Blue");
    println!("   │   │   ├── Fonts: Segoe UI / Segoe UI Light");
    println!("   │   │   ├── 12 color slots defined");
    println!("   │   │   └── XML: {} bytes", theme_xml.len());

    // Master with multiple layouts
    let mut corp_master = SlideMasterPart::new(1);
    corp_master.set_name("Corporate Master");
    corp_master.add_layout_rel_id("rId2"); // Title
    corp_master.add_layout_rel_id("rId3"); // Title + Content
    corp_master.add_layout_rel_id("rId4"); // Section Header
    corp_master.add_layout_rel_id("rId5"); // Two Content
    corp_master.add_layout_rel_id("rId6"); // Comparison
    corp_master.add_layout_rel_id("rId7"); // Title Only
    corp_master.add_layout_rel_id("rId8"); // Blank
    println!("   │   └── Master: {} with {} layouts linked", corp_master.name(), corp_master.layout_rel_ids().len());

    // -------------------------------------------------------------------------
    // VBA + Custom XML Integration
    // -------------------------------------------------------------------------
    println!("   ├── VBA + Custom XML Integration:");
    
    // VBA with multiple modules
    let vba_project = VbaProjectPart::new()
        .add_module(VbaModule::new("AutoRun", r#"
Sub Auto_Open()
    MsgBox "Welcome to the presentation!"
End Sub

Sub NavigateToSlide(slideNum As Integer)
    SlideShowWindows(1).View.GotoSlide slideNum
End Sub
"#))
        .add_module(VbaModule::new("DataHelpers", r#"
Function GetCustomData(key As String) As String
    ' Read from Custom XML part
    GetCustomData = ActivePresentation.CustomXMLParts(1).SelectSingleNode("//" & key).Text
End Function
"#))
        .add_module(VbaModule::class("SlideController", r#"
Private currentSlide As Integer

Public Sub NextSlide()
    currentSlide = currentSlide + 1
    NavigateToSlide currentSlide
End Sub
"#));
    println!("   │   ├── VBA Project:");
    println!("   │   │   ├── AutoRun: Auto_Open, NavigateToSlide");
    println!("   │   │   ├── DataHelpers: GetCustomData (reads Custom XML)");
    println!("   │   │   └── SlideController: Class for navigation");

    // Custom XML with structured data
    let app_config = CustomXmlPart::new(1, "presentationConfig")
        .namespace("http://company.com/pptx/config")
        .property("version", "2.1.0")
        .property("author", "Demo User")
        .property("department", "Engineering")
        .property("confidentiality", "Internal")
        .property("lastModified", "2024-01-15T10:30:00Z");
    let config_xml = app_config.to_xml()?;
    println!("   │   └── Custom XML:");
    println!("   │       ├── Namespace: http://company.com/pptx/config");
    println!("   │       ├── Properties: version, author, department, etc.");
    println!("   │       └── XML: {} bytes", config_xml.len());

    // -------------------------------------------------------------------------
    // Embedded Fonts with Variants
    // -------------------------------------------------------------------------
    println!("   ├── Embedded Font Collection:");
    let mut font_collection = EmbeddedFontCollection::new();
    font_collection.add("Corporate Sans", vec![0; 1000]);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::Bold);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::Italic);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::BoldItalic);
    font_collection.add("Code Mono", vec![0; 800]);
    let fonts_xml = font_collection.to_xml();
    println!("   │   ├── Corporate Sans: Regular, Bold, Italic, BoldItalic");
    println!("   │   ├── Code Mono: Regular");
    println!("   │   ├── Total: {} font files", font_collection.len());
    println!("   │   └── XML: {} bytes", fonts_xml.len());

    // -------------------------------------------------------------------------
    // Handout with Full Configuration
    // -------------------------------------------------------------------------
    println!("   └── Handout Master Configuration:");
    let handout = HandoutMasterPart::new()
        .layout(HandoutLayout::SlidesPerPage6)
        .header("Q1 2024 Strategy Review")
        .footer("Confidential - Internal Use Only");
    let handout_xml = handout.to_xml()?;
    println!("       ├── Layout: 6 slides per page");
    println!("       ├── Header: Q1 2024 Strategy Review");
    println!("       ├── Footer: Confidential - Internal Use Only");
    println!("       └── XML: {} bytes", handout_xml.len());

    // =========================================================================
    // Summary
    // =========================================================================
    println!("\n╔══════════════════════════════════════════════════════════════╗");
    println!("║                    Element Coverage Summary                   ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  LAYOUTS (6 types):                                          ║");
    println!("║    ✓ CenteredTitle    ✓ TitleOnly      ✓ TitleAndContent     ║");
    println!("║    ✓ TitleAndBigContent  ✓ TwoColumn   ✓ Blank               ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  TEXT FORMATTING:                                            ║");
    println!("║    ✓ Bold            ✓ Italic         ✓ Underline            ║");
    println!("║    ✓ Font Size       ✓ Font Color     ✓ Title/Content styles ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  TABLES:                                                     ║");
    println!("║    ✓ Multiple rows/columns  ✓ Bold cells  ✓ Background colors║");
    println!("║    ✓ Header styling         ✓ Position control               ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  CHARTS:                                                     ║");
    println!("║    ✓ Bar Chart       ✓ Line Chart     ✓ Pie Chart            ║");
    println!("║    ✓ Multiple series ✓ Categories                            ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  SHAPES:                                                     ║");
    println!("║    ✓ Rectangle       ✓ Ellipse        ✓ RoundedRectangle     ║");
    println!("║    ✓ Triangle        ✓ Diamond        ✓ Color fills          ║");
    println!("║    ✓ Gradient fills  ✓ Transparency   ✓ Text in shapes       ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  CONNECTORS (NEW):                                           ║");
    println!("║    ✓ Straight        ✓ Elbow          ✓ Curved               ║");
    println!("║    ✓ Arrow types     ✓ Dash styles    ✓ Line colors/widths   ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  IMAGES:                                                     ║");
    println!("║    ✓ Image placeholders  ✓ Position   ✓ Dimensions           ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  PACKAGE:                                                    ║");
    println!("║    ✓ Create PPTX     ✓ Read PPTX      ✓ Analyze contents     ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  PARTS API (NEW):                                            ║");
    println!("║    ✓ SlideLayoutPart (11 types)  ✓ SlideMasterPart           ║");
    println!("║    ✓ ThemePart (colors/fonts)    ✓ NotesSlidePart            ║");
    println!("║    ✓ AppPropertiesPart           ✓ MediaPart (10 formats)    ║");
    println!("║    ✓ TablePart (cell formatting) ✓ ContentTypesPart          ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  ELEMENTS API:                                               ║");
    println!("║    ✓ RgbColor        ✓ SchemeColor    ✓ Color enum           ║");
    println!("║    ✓ Position        ✓ Size           ✓ Transform            ║");
    println!("║    ✓ EMU conversions (inches, cm, mm, pt)                    ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  ADVANCED FEATURES (NEW):                                    ║");
    println!("║    ✓ Animation (50+ effects)  ✓ Transitions (27 types)       ║");
    println!("║    ✓ SmartArt (25 layouts)    ✓ 3D Models (GLB/GLTF/OBJ)     ║");
    println!("║    ✓ VBA Macros (.pptm)       ✓ Embedded Fonts               ║");
    println!("║    ✓ Custom XML               ✓ Handout Master               ║");
    println!("║    ✓ Table borders/alignment  ✓ Merged cells                 ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  Output: comprehensive_demo.pptx ({} slides, {} KB)         ║", 
             slides.len(), pptx_data.len() / 1024);
    println!("╚══════════════════════════════════════════════════════════════╝");

    Ok(())
}

pub fn add_lettered(self, text: &str) -> Self

Add a lettered item (shorthand for add_styled_bullet with LetterLower)

Examples found in repository

examples/new_features_demo.rs (line 30)

fn main() -> std::result::Result<(), Box<dyn std::error::Error>> {
    // Create output directory
    std::fs::create_dir_all("examples/output")?;

    // 1. Bullet Styles Demo
    println!("Creating bullet styles demo...");
    
    // Numbered list slide
    let numbered_slide = SlideContent::new("Numbered List")
        .with_bullet_style(BulletStyle::Number)
        .add_bullet("First step")
        .add_bullet("Second step")
        .add_bullet("Third step")
        .add_bullet("Fourth step");
    
    // Lettered list slide
    let lettered_slide = SlideContent::new("Lettered List")
        .add_lettered("Option A")
        .add_lettered("Option B")
        .add_lettered("Option C");
    
    // Roman numerals slide
    let roman_slide = SlideContent::new("Roman Numerals")
        .with_bullet_style(BulletStyle::RomanUpper)
        .add_bullet("Chapter I")
        .add_bullet("Chapter II")
        .add_bullet("Chapter III");
    
    // Mixed bullets with sub-bullets
    let mixed_slide = SlideContent::new("Mixed Bullets")
        .add_bullet("Main point")
        .add_sub_bullet("Supporting detail 1")
        .add_sub_bullet("Supporting detail 2")
        .add_bullet("Another main point")
        .add_sub_bullet("More details");
    
    // Custom bullet slide
    let custom_slide = SlideContent::new("Custom Bullets")
        .add_styled_bullet("Star bullet", BulletStyle::Custom('★'))
        .add_styled_bullet("Arrow bullet", BulletStyle::Custom('→'))
        .add_styled_bullet("Check bullet", BulletStyle::Custom('✓'))
        .add_styled_bullet("Diamond bullet", BulletStyle::Custom('◆'));
    
    let bullet_demo = pptx!("Bullet Styles Demo")
        .title_slide("Bullet Styles - Demonstrating various list formats")
        .content_slide(numbered_slide)
        .content_slide(lettered_slide)
        .content_slide(roman_slide)
        .content_slide(mixed_slide)
        .content_slide(custom_slide)
        .build()?;
    
    std::fs::write("examples/output/bullet_styles.pptx", bullet_demo)?;
    println!("  ✓ Created examples/output/bullet_styles.pptx");

    // 2. Text Formatting Demo
    println!("Creating text formatting demo...");
    
    let text_demo = pptx!("Text Formatting Demo")
        .title_slide("Text Formatting - Strikethrough, highlight, subscript, superscript")
        .slide("Text Styles", &[
            "Normal text for comparison",
            "This demonstrates various formatting options",
            "Use TextFormat for rich text styling",
        ])
        .slide("Font Size Presets", &[
            &format!("TITLE: {}pt - For main titles", font_sizes::TITLE),
            &format!("SUBTITLE: {}pt - For subtitles", font_sizes::SUBTITLE),
            &format!("HEADING: {}pt - For section headers", font_sizes::HEADING),
            &format!("BODY: {}pt - For regular content", font_sizes::BODY),
            &format!("SMALL: {}pt - For smaller text", font_sizes::SMALL),
            &format!("CAPTION: {}pt - For captions", font_sizes::CAPTION),
        ])
        .slide("Text Effects", &[
            "Strikethrough: For deleted text",
            "Highlight: For emphasized text",
            "Subscript: H₂O style formatting",
            "Superscript: x² style formatting",
        ])
        .build()?;
    
    std::fs::write("examples/output/text_formatting.pptx", text_demo)?;
    println!("  ✓ Created examples/output/text_formatting.pptx");

    // 3. Image from Base64 Demo
    println!("Creating image demo...");
    
    // 1x1 red PNG pixel in base64
    let red_pixel_base64 = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8DwHwAFBQIAX8jx0gAAAABJRU5ErkJggg==";
    
    // Create image from base64
    let img = ImageBuilder::from_base64(red_pixel_base64, inches(2.0), inches(2.0), "PNG")
        .position(inches(4.0), inches(3.0))
        .build();
    
    let image_slide = SlideContent::new("Image from Base64")
        .add_bullet("Images can be loaded from base64 encoded data")
        .add_bullet("Useful for embedding images without file access")
        .add_bullet("Supports PNG, JPEG, GIF formats")
        .add_image(img);
    
    let image_demo = pptx!("Image Features Demo")
        .title_slide("Image Features - Loading images from various sources")
        .content_slide(image_slide)
        .slide("Image Sources", &[
            "Image::new(filename) - From file path",
            "Image::from_base64(data) - From base64 string",
            "Image::from_bytes(data) - From raw bytes",
            "ImageBuilder for fluent API",
        ])
        .build()?;
    
    std::fs::write("examples/output/image_features.pptx", image_demo)?;
    println!("  ✓ Created examples/output/image_features.pptx");

    // 4. Theme Colors Demo
    println!("Creating themes demo...");
    
    let all_themes = themes::all();
    let theme_info: Vec<String> = all_themes.iter().map(|t| {
        format!("{}: Primary={}, Accent={}", t.name, t.primary, t.accent)
    }).collect();
    
    let themes_demo = pptx!("Theme Colors Demo")
        .title_slide("Theme Colors - Predefined color palettes")
        .slide("Available Themes", &theme_info.iter().map(|s| s.as_str()).collect::<Vec<_>>())
        .slide("Color Constants", &[
            &format!("Material Red: {}", colors::MATERIAL_RED),
            &format!("Material Blue: {}", colors::MATERIAL_BLUE),
            &format!("Material Green: {}", colors::MATERIAL_GREEN),
            &format!("Carbon Blue 60: {}", colors::CARBON_BLUE_60),
            &format!("Carbon Gray 100: {}", colors::CARBON_GRAY_100),
        ])
        .build()?;
    
    std::fs::write("examples/output/themes_demo.pptx", themes_demo)?;
    println!("  ✓ Created examples/output/themes_demo.pptx");

    // 5. Complete Feature Showcase
    println!("Creating complete feature showcase...");
    
    let showcase = pptx!("ppt-rs v0.2.1 Features")
        .title_slide("New Features in ppt-rs v0.2.1")
        .slide("Bullet Formatting", &[
            "BulletStyle::Number - 1, 2, 3...",
            "BulletStyle::LetterLower/Upper - a, b, c / A, B, C",
            "BulletStyle::RomanLower/Upper - i, ii, iii / I, II, III",
            "BulletStyle::Custom(char) - Any custom character",
            "Sub-bullets with indentation",
        ])
        .slide("Text Enhancements", &[
            "TextFormat::strikethrough() - Strike through text",
            "TextFormat::highlight(color) - Background highlight",
            "TextFormat::subscript() - H₂O style",
            "TextFormat::superscript() - x² style",
            "font_sizes module with presets",
        ])
        .slide("Image Loading", &[
            "Image::from_base64() - Base64 encoded images",
            "Image::from_bytes() - Raw byte arrays",
            "ImageSource enum for flexible handling",
            "Built-in base64 decoder",
        ])
        .slide("Templates", &[
            "templates::business_proposal()",
            "templates::status_report()",
            "templates::training_material()",
            "templates::technical_doc()",
            "templates::simple()",
        ])
        .slide("Themes & Colors", &[
            "themes::CORPORATE, MODERN, VIBRANT, DARK",
            "themes::NATURE, TECH, CARBON",
            "colors module with Material Design colors",
            "colors module with IBM Carbon colors",
        ])
        .build()?;
    
    std::fs::write("examples/output/feature_showcase.pptx", showcase)?;
    println!("  ✓ Created examples/output/feature_showcase.pptx");

    println!("\n✅ All demos created successfully!");
    println!("   Check examples/output/ for the generated files.");
    
    Ok(())
}

examples/comprehensive_demo.rs (line 871)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    println!("╔══════════════════════════════════════════════════════════════╗");
    println!("║       PPTX-RS Element Showcase - Complete Coverage           ║");
    println!("╚══════════════════════════════════════════════════════════════╝\n");

    let mut slides = Vec::new();

    // =========================================================================
    // SLIDE 1: CenteredTitle Layout + Title Formatting
    // =========================================================================
    println!("📐 Slide 1: CenteredTitle Layout + Title Formatting");
    slides.push(
        SlideContent::new("PPTX-RS Element Showcase")
            .layout(SlideLayout::CenteredTitle)
            .title_size(54)
            .title_bold(true)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 2: TitleOnly Layout
    // =========================================================================
    println!("📐 Slide 2: TitleOnly Layout");
    slides.push(
        SlideContent::new("Section: Slide Layouts")
            .layout(SlideLayout::TitleOnly)
            .title_size(48)
            .title_bold(true)
            .title_color("C0504D")
    );

    // =========================================================================
    // SLIDE 3: TitleAndContent Layout + All Text Formatting
    // =========================================================================
    println!("📝 Slide 3: TitleAndContent + Text Formatting");
    slides.push(
        SlideContent::new("Text Formatting Options")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .title_italic(true)
            .title_underline(true)
            .title_size(44)
            .add_bullet("Normal text (default)")
            .add_bullet("Bold content text")
            .add_bullet("Italic content text")
            .add_bullet("Underlined content")
            .add_bullet("Custom font size (28pt)")
            .add_bullet("Custom color (#4F81BD)")
            .content_bold(true)
            .content_italic(true)
            .content_underline(true)
            .content_size(28)
            .content_color("4F81BD")
    );

    // =========================================================================
    // SLIDE 4: TitleAndBigContent Layout
    // =========================================================================
    println!("📐 Slide 4: TitleAndBigContent Layout");
    slides.push(
        SlideContent::new("Key Highlights")
            .layout(SlideLayout::TitleAndBigContent)
            .title_color("1F497D")
            .add_bullet("Large content area for emphasis")
            .add_bullet("Perfect for key messages")
            .add_bullet("Smaller title, bigger content")
            .content_bold(true)
            .content_size(32)
    );

    // =========================================================================
    // SLIDE 5: TwoColumn Layout
    // =========================================================================
    println!("📐 Slide 5: TwoColumn Layout");
    slides.push(
        SlideContent::new("Two Column Comparison")
            .layout(SlideLayout::TwoColumn)
            .title_color("1F497D")
            .add_bullet("Left Column Item 1")
            .add_bullet("Left Column Item 2")
            .add_bullet("Left Column Item 3")
            .add_bullet("Right Column Item 1")
            .add_bullet("Right Column Item 2")
            .add_bullet("Right Column Item 3")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 6: Blank Layout
    // =========================================================================
    println!("📐 Slide 6: Blank Layout");
    slides.push(
        SlideContent::new("")
            .layout(SlideLayout::Blank)
    );

    // =========================================================================
    // SLIDE 7: Table with All Cell Styling Options
    // =========================================================================
    println!("📊 Slide 7: Table with Cell Styling");
    let styled_table = TableBuilder::new(vec![1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Header 1").bold().background_color("1F497D"),
            TableCell::new("Header 2").bold().background_color("4F81BD"),
            TableCell::new("Header 3").bold().background_color("8064A2"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Bold Cell").bold(),
            TableCell::new("Normal Cell"),
            TableCell::new("Colored").background_color("9BBB59"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Red BG").background_color("C0504D"),
            TableCell::new("Green BG").background_color("9BBB59"),
            TableCell::new("Blue BG").background_color("4F81BD"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Row 3 Col 1"),
            TableCell::new("Row 3 Col 2"),
            TableCell::new("Row 3 Col 3").bold().background_color("F79646"),
        ]))
        .position(500000, 1800000)
        .build();
    
    slides.push(
        SlideContent::new("Table with Cell Styling")
            .table(styled_table)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 8: Charts (Bar, Line, Pie)
    // =========================================================================
    println!("📈 Slide 8: Chart Types");
    
    // Create chart data structures (for demonstration)
    let _bar_chart = ChartBuilder::new("Sales by Region", ChartType::Bar)
        .categories(vec!["North", "South", "East", "West"])
        .add_series(ChartSeries::new("2023", vec![100.0, 80.0, 120.0, 90.0]))
        .add_series(ChartSeries::new("2024", vec![120.0, 95.0, 140.0, 110.0]))
        .build();
    
    let _line_chart = ChartBuilder::new("Monthly Trend", ChartType::Line)
        .categories(vec!["Jan", "Feb", "Mar", "Apr", "May", "Jun"])
        .add_series(ChartSeries::new("Revenue", vec![10.0, 12.0, 15.0, 14.0, 18.0, 22.0]))
        .build();
    
    let _pie_chart = ChartBuilder::new("Market Share", ChartType::Pie)
        .categories(vec!["Product A", "Product B", "Product C", "Others"])
        .add_series(ChartSeries::new("Share", vec![40.0, 30.0, 20.0, 10.0]))
        .build();
    
    slides.push(
        SlideContent::new("Chart Types: Bar, Line, Pie")
            .with_chart()
            .title_color("1F497D")
            .add_bullet("Bar Chart: Compare categories")
            .add_bullet("Line Chart: Show trends over time")
            .add_bullet("Pie Chart: Show proportions")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 9: Shapes with Different Fills
    // =========================================================================
    println!("🔷 Slide 9: Shapes with Fills");
    
    let rect = Shape::new(ShapeType::Rectangle, 500000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("4F81BD"))
        .with_text("Rectangle");
    
    let ellipse = Shape::new(ShapeType::Ellipse, 3000000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("9BBB59"))
        .with_text("Ellipse");
    
    let rounded = Shape::new(ShapeType::RoundedRectangle, 5500000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("C0504D"))
        .with_text("Rounded");
    
    let triangle = Shape::new(ShapeType::Triangle, 1500000, 3000000, 1500000, 1200000)
        .with_fill(ShapeFill::new("8064A2"))
        .with_text("Triangle");
    
    let diamond = Shape::new(ShapeType::Diamond, 4000000, 3000000, 1500000, 1200000)
        .with_fill(ShapeFill::new("F79646"))
        .with_text("Diamond");
    
    slides.push(
        SlideContent::new("Shape Types with Color Fills")
            .add_shape(rect)
            .add_shape(ellipse)
            .add_shape(rounded)
            .add_shape(triangle)
            .add_shape(diamond)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 10: Gradient Fills (NEW)
    // =========================================================================
    println!("🌈 Slide 10: Gradient Fills");
    
    // Horizontal gradient
    let gradient_h = Shape::new(ShapeType::Rectangle, 500000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("1565C0", "42A5F5", GradientDirection::Horizontal))
        .with_text("Horizontal");
    
    // Vertical gradient
    let gradient_v = Shape::new(ShapeType::Rectangle, 3200000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("2E7D32", "81C784", GradientDirection::Vertical))
        .with_text("Vertical");
    
    // Diagonal gradient
    let gradient_d = Shape::new(ShapeType::RoundedRectangle, 5900000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("C62828", "EF9A9A", GradientDirection::DiagonalDown))
        .with_text("Diagonal");
    
    // Three-color gradient
    let gradient_3 = Shape::new(ShapeType::Ellipse, 1800000, 3200000, 2500000, 1200000)
        .with_gradient(GradientFill::three_color("FF6F00", "FFC107", "FFEB3B", GradientDirection::Horizontal))
        .with_text("3-Color");
    
    // Custom angle gradient
    let gradient_angle = Shape::new(ShapeType::RoundedRectangle, 4800000, 3200000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("7B1FA2", "E1BEE7", GradientDirection::Angle(135)))
        .with_text("135° Angle");
    
    slides.push(
        SlideContent::new("Gradient Fills - Multiple Directions")
            .add_shape(gradient_h)
            .add_shape(gradient_v)
            .add_shape(gradient_d)
            .add_shape(gradient_3)
            .add_shape(gradient_angle)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 11: Transparency (NEW)
    // =========================================================================
    println!("👻 Slide 11: Transparency Effects");
    
    // Base shape (fully opaque)
    let base = Shape::new(ShapeType::Rectangle, 1000000, 1800000, 3000000, 2000000)
        .with_fill(ShapeFill::new("1565C0"))
        .with_text("Base (100%)");
    
    // 25% transparent overlay
    let trans_25 = Shape::new(ShapeType::Rectangle, 2000000, 2200000, 2500000, 1500000)
        .with_fill(ShapeFill::new("F44336").with_transparency(25))
        .with_line(ShapeLine::new("B71C1C", 25400))
        .with_text("25% Transparent");
    
    // 50% transparent overlay
    let trans_50 = Shape::new(ShapeType::Ellipse, 4500000, 1800000, 2500000, 2000000)
        .with_fill(ShapeFill::new("4CAF50").with_transparency(50))
        .with_line(ShapeLine::new("1B5E20", 25400))
        .with_text("50% Transparent");
    
    // 75% transparent overlay
    let trans_75 = Shape::new(ShapeType::RoundedRectangle, 5500000, 2500000, 2500000, 1500000)
        .with_fill(ShapeFill::new("FF9800").with_transparency(75))
        .with_line(ShapeLine::new("E65100", 25400))
        .with_text("75% Transparent");
    
    slides.push(
        SlideContent::new("Transparency Effects - Overlapping Shapes")
            .add_shape(base)
            .add_shape(trans_25)
            .add_shape(trans_50)
            .add_shape(trans_75)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 12: Styled Connectors (NEW)
    // =========================================================================
    println!("🔗 Slide 12: Styled Connectors");
    
    // Create shapes to connect
    let box1 = Shape::new(ShapeType::RoundedRectangle, 500000, 1800000, 1800000, 800000)
        .with_id(100)
        .with_fill(ShapeFill::new("1565C0"))
        .with_text("Start");
    
    let box2 = Shape::new(ShapeType::RoundedRectangle, 3500000, 1800000, 1800000, 800000)
        .with_id(101)
        .with_fill(ShapeFill::new("2E7D32"))
        .with_text("Process");
    
    let box3 = Shape::new(ShapeType::RoundedRectangle, 6500000, 1800000, 1800000, 800000)
        .with_id(102)
        .with_fill(ShapeFill::new("C62828"))
        .with_text("End");
    
    // Straight connector with arrow
    let conn1 = Connector::straight(2300000, 2200000, 3500000, 2200000)
        .with_line(ConnectorLine::new("1565C0", 25400))
        .with_end_arrow(ArrowType::Triangle)
        .with_arrow_size(ArrowSize::Large);
    
    // Elbow connector with stealth arrow
    let conn2 = Connector::elbow(5300000, 2200000, 6500000, 2200000)
        .with_line(ConnectorLine::new("2E7D32", 38100).with_dash(LineDash::Dash))
        .with_end_arrow(ArrowType::Stealth)
        .with_arrow_size(ArrowSize::Medium);
    
    // Curved connector examples
    let box4 = Shape::new(ShapeType::Ellipse, 1000000, 3200000, 1500000, 800000)
        .with_id(103)
        .with_fill(ShapeFill::new("7B1FA2"))
        .with_text("A");
    
    let box5 = Shape::new(ShapeType::Ellipse, 4000000, 3200000, 1500000, 800000)
        .with_id(104)
        .with_fill(ShapeFill::new("00838F"))
        .with_text("B");
    
    let box6 = Shape::new(ShapeType::Ellipse, 7000000, 3200000, 1500000, 800000)
        .with_id(105)
        .with_fill(ShapeFill::new("EF6C00"))
        .with_text("C");
    
    // Curved connector with diamond arrow
    let conn3 = Connector::curved(2500000, 3600000, 4000000, 3600000)
        .with_line(ConnectorLine::new("7B1FA2", 19050).with_dash(LineDash::DashDot))
        .with_arrows(ArrowType::Oval, ArrowType::Diamond);
    
    // Dotted connector
    let conn4 = Connector::straight(5500000, 3600000, 7000000, 3600000)
        .with_line(ConnectorLine::new("00838F", 12700).with_dash(LineDash::Dot))
        .with_end_arrow(ArrowType::Open);
    
    slides.push(
        SlideContent::new("Styled Connectors - Types, Arrows, Dashes")
            .add_shape(box1)
            .add_shape(box2)
            .add_shape(box3)
            .add_shape(box4)
            .add_shape(box5)
            .add_shape(box6)
            .add_connector(conn1)
            .add_connector(conn2)
            .add_connector(conn3)
            .add_connector(conn4)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 13: Images
    // =========================================================================
    println!("🖼️  Slide 13: Image Placeholders");
    
    let img1 = Image::new("logo.png", 2500000, 1800000, "png")
        .position(500000, 1600000);
    let img2 = Image::new("photo.jpg", 2500000, 1800000, "jpg")
        .position(3500000, 1600000);
    let img3 = Image::new("diagram.png", 2000000, 1800000, "png")
        .position(6500000, 1600000);
    
    slides.push(
        SlideContent::new("Image Placeholders")
            .add_image(img1)
            .add_image(img2)
            .add_image(img3)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 11: Advanced Table with Borders & Alignment (NEW)
    // =========================================================================
    println!("📊 Slide 11: Advanced Table (borders, alignment, merged cells)");
    
    // Build advanced table using generator's TableBuilder with alignment
    let advanced_table = TableBuilder::new(vec![2000000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2024 Financial Report").bold().background_color("1F4E79").text_color("FFFFFF").align_center().font_size(14),
            TableCell::new("").background_color("1F4E79"),
            TableCell::new("").background_color("1F4E79"),
            TableCell::new("").background_color("1F4E79"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Category").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Revenue").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Expenses").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Profit").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Product Sales").text_color("000000").align_left(),
            TableCell::new("$1,250,000").text_color("2E7D32").align_right(),
            TableCell::new("$450,000").text_color("C62828").align_right(),
            TableCell::new("$800,000").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Services").text_color("000000").align_left(),
            TableCell::new("$890,000").text_color("2E7D32").align_right(),
            TableCell::new("$320,000").text_color("C62828").align_right(),
            TableCell::new("$570,000").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Total").bold().background_color("E7E6E6").text_color("000000").align_left(),
            TableCell::new("$2,140,000").bold().background_color("E7E6E6").text_color("000000").align_right(),
            TableCell::new("$770,000").bold().background_color("E7E6E6").text_color("000000").align_right(),
            TableCell::new("$1,370,000").bold().background_color("C6EFCE").text_color("006100").align_right(),
        ]))
        .position(300000, 1600000)
        .build();
    
    slides.push(
        SlideContent::new("Financial Report - Advanced Table")
            .table(advanced_table)
            .title_color("1F4E79")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 12: Comparison Matrix Table (NEW)
    // =========================================================================
    println!("📊 Slide 12: Comparison Matrix Table");
    
    let comparison_table = TableBuilder::new(vec![2000000, 1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Feature").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Basic").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Pro").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Enterprise").bold().background_color("4472C4").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Storage").text_color("000000"),
            TableCell::new("5 GB").text_color("000000"),
            TableCell::new("50 GB").text_color("000000"),
            TableCell::new("Unlimited").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Users").text_color("000000"),
            TableCell::new("1").text_color("000000"),
            TableCell::new("10").text_color("000000"),
            TableCell::new("Unlimited").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Support").text_color("000000"),
            TableCell::new("Email").text_color("000000"),
            TableCell::new("24/7 Chat").text_color("000000"),
            TableCell::new("Dedicated").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("API Access").text_color("000000"),
            TableCell::new("No").text_color("C62828"),
            TableCell::new("Yes").text_color("2E7D32"),
            TableCell::new("Yes + Priority").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Price/month").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$9").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$29").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$99").bold().background_color("F2F2F2").text_color("000000"),
        ]))
        .position(500000, 1600000)
        .build();
    
    slides.push(
        SlideContent::new("Pricing Comparison Matrix")
            .table(comparison_table)
            .title_color("4472C4")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 13: Process Flow with Shapes (NEW - SmartArt-like)
    // =========================================================================
    println!("🔷 Slide 13: Process Flow (SmartArt-style)");
    
    // Create process flow using shapes
    let step1 = Shape::new(ShapeType::RoundedRectangle, 300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("1. Research");
    let arrow1 = Shape::new(ShapeType::RightArrow, 1800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step2 = Shape::new(ShapeType::RoundedRectangle, 2300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("2. Design");
    let arrow2 = Shape::new(ShapeType::RightArrow, 3800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step3 = Shape::new(ShapeType::RoundedRectangle, 4300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("3. Develop");
    let arrow3 = Shape::new(ShapeType::RightArrow, 5800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step4 = Shape::new(ShapeType::RoundedRectangle, 6300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("5B9BD5"))
        .with_text("4. Deploy");
    
    slides.push(
        SlideContent::new("Development Process Flow")
            .add_shape(step1)
            .add_shape(arrow1)
            .add_shape(step2)
            .add_shape(arrow2)
            .add_shape(step3)
            .add_shape(arrow3)
            .add_shape(step4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 14: Organization Chart with Shapes (NEW)
    // =========================================================================
    println!("🔷 Slide 14: Organization Chart");
    
    // CEO at top
    let ceo = Shape::new(ShapeType::RoundedRectangle, 3500000, 1400000, 2000000, 600000)
        .with_fill(ShapeFill::new("1F4E79"))
        .with_text("CEO");
    
    // Vertical line from CEO
    let line1 = Shape::new(ShapeType::Rectangle, 4450000, 2000000, 100000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // Horizontal connector
    let hline = Shape::new(ShapeType::Rectangle, 1950000, 2400000, 5100000, 50000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // CTO, CFO, COO
    let cto = Shape::new(ShapeType::RoundedRectangle, 1000000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("CTO");
    let cfo = Shape::new(ShapeType::RoundedRectangle, 3600000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("CFO");
    let coo = Shape::new(ShapeType::RoundedRectangle, 6200000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("COO");
    
    // Vertical lines to departments
    let vline1 = Shape::new(ShapeType::Rectangle, 1850000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let vline2 = Shape::new(ShapeType::Rectangle, 4450000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let vline3 = Shape::new(ShapeType::Rectangle, 7050000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // Teams under CTO
    let eng = Shape::new(ShapeType::Rectangle, 500000, 3300000, 1200000, 400000)
        .with_fill(ShapeFill::new("BDD7EE"))
        .with_text("Engineering");
    let product = Shape::new(ShapeType::Rectangle, 1800000, 3300000, 1200000, 400000)
        .with_fill(ShapeFill::new("BDD7EE"))
        .with_text("Product");
    
    slides.push(
        SlideContent::new("Organization Structure")
            .add_shape(ceo)
            .add_shape(line1)
            .add_shape(hline)
            .add_shape(cto)
            .add_shape(cfo)
            .add_shape(coo)
            .add_shape(vline1)
            .add_shape(vline2)
            .add_shape(vline3)
            .add_shape(eng)
            .add_shape(product)
            .title_color("1F4E79")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 15: PDCA Cycle Diagram (NEW)
    // =========================================================================
    println!("🔷 Slide 15: PDCA Cycle Diagram");
    
    // Four quadrants for PDCA
    let plan = Shape::new(ShapeType::RoundedRectangle, 1500000, 1600000, 2500000, 1500000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("PLAN\n\nDefine goals\nand strategy");
    let do_box = Shape::new(ShapeType::RoundedRectangle, 4500000, 1600000, 2500000, 1500000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("DO\n\nImplement\nthe plan");
    let check = Shape::new(ShapeType::RoundedRectangle, 4500000, 3300000, 2500000, 1500000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("CHECK\n\nMeasure\nresults");
    let act = Shape::new(ShapeType::RoundedRectangle, 1500000, 3300000, 2500000, 1500000)
        .with_fill(ShapeFill::new("FFC000"))
        .with_text("ACT\n\nAdjust and\nimprove");
    
    // Arrows between quadrants
    let arr1 = Shape::new(ShapeType::RightArrow, 4100000, 2100000, 300000, 300000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr2 = Shape::new(ShapeType::DownArrow, 5600000, 3200000, 300000, 200000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr3 = Shape::new(ShapeType::LeftArrow, 4100000, 3800000, 300000, 300000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr4 = Shape::new(ShapeType::UpArrow, 2600000, 3200000, 300000, 200000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    slides.push(
        SlideContent::new("PDCA Continuous Improvement Cycle")
            .add_shape(plan)
            .add_shape(do_box)
            .add_shape(check)
            .add_shape(act)
            .add_shape(arr1)
            .add_shape(arr2)
            .add_shape(arr3)
            .add_shape(arr4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 16: Pyramid Diagram (Maslow's Hierarchy) (NEW)
    // =========================================================================
    println!("🔷 Slide 16: Pyramid Diagram");
    
    // Build pyramid from bottom to top
    let level5 = Shape::new(ShapeType::Trapezoid, 500000, 4000000, 8000000, 600000)
        .with_fill(ShapeFill::new("C00000"))
        .with_text("Physiological Needs - Food, Water, Shelter");
    let level4 = Shape::new(ShapeType::Trapezoid, 1000000, 3400000, 7000000, 600000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Safety Needs - Security, Stability");
    let level3 = Shape::new(ShapeType::Trapezoid, 1500000, 2800000, 6000000, 600000)
        .with_fill(ShapeFill::new("FFC000"))
        .with_text("Love & Belonging - Relationships");
    let level2 = Shape::new(ShapeType::Trapezoid, 2000000, 2200000, 5000000, 600000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Esteem - Achievement, Respect");
    let level1 = Shape::new(ShapeType::Triangle, 2500000, 1500000, 4000000, 700000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Self-Actualization");
    
    slides.push(
        SlideContent::new("Maslow's Hierarchy of Needs")
            .add_shape(level5)
            .add_shape(level4)
            .add_shape(level3)
            .add_shape(level2)
            .add_shape(level1)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 17: Venn Diagram (NEW)
    // =========================================================================
    println!("🔷 Slide 17: Venn Diagram");
    
    // Three overlapping circles
    let circle1 = Shape::new(ShapeType::Ellipse, 1500000, 1800000, 3000000, 3000000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Skills");
    let circle2 = Shape::new(ShapeType::Ellipse, 3500000, 1800000, 3000000, 3000000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Passion");
    let circle3 = Shape::new(ShapeType::Ellipse, 2500000, 3200000, 3000000, 3000000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Market Need");
    
    // Center label
    let center = Shape::new(ShapeType::Ellipse, 3200000, 2800000, 1600000, 800000)
        .with_fill(ShapeFill::new("FFFFFF"))
        .with_text("IKIGAI");
    
    slides.push(
        SlideContent::new("Finding Your Ikigai - Venn Diagram")
            .add_shape(circle1)
            .add_shape(circle2)
            .add_shape(circle3)
            .add_shape(center)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 18: Timeline/Roadmap (NEW)
    // =========================================================================
    println!("📊 Slide 18: Project Timeline");
    
    let timeline_table = TableBuilder::new(vec![1500000, 1500000, 1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q2 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q3 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q4 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q1 2025").bold().background_color("4472C4").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Research\n& Planning").background_color("BDD7EE").text_color("1F497D"),
            TableCell::new("Design\nPhase").background_color("BDD7EE").text_color("1F497D"),
            TableCell::new("Development\nSprint 1-3").background_color("C6EFCE").text_color("006100"),
            TableCell::new("Testing\n& QA").background_color("FCE4D6").text_color("C65911"),
            TableCell::new("Launch\n& Support").background_color("E2EFDA").text_color("375623"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("✓ Complete").bold().text_color("2E7D32"),
            TableCell::new("✓ Complete").bold().text_color("2E7D32"),
            TableCell::new("In Progress").text_color("ED7D31"),
            TableCell::new("Planned").text_color("7F7F7F"),
            TableCell::new("Planned").text_color("7F7F7F"),
        ]))
        .position(300000, 2000000)
        .build();
    
    slides.push(
        SlideContent::new("Project Roadmap 2024-2025")
            .table(timeline_table)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 19: Dashboard Summary (NEW)
    // =========================================================================
    println!("🔷 Slide 19: Dashboard with KPIs");
    
    // KPI boxes
    let kpi1 = Shape::new(ShapeType::RoundedRectangle, 300000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Revenue\n\n$2.14M\n+15% YoY");
    let kpi2 = Shape::new(ShapeType::RoundedRectangle, 2500000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Customers\n\n12,450\n+22% YoY");
    let kpi3 = Shape::new(ShapeType::RoundedRectangle, 4700000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("NPS Score\n\n72\n+8 pts");
    let kpi4 = Shape::new(ShapeType::RoundedRectangle, 6900000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("5B9BD5"))
        .with_text("Retention\n\n94%\n+3% YoY");
    
    // Status indicators
    let status1 = Shape::new(ShapeType::Ellipse, 1800000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    let status2 = Shape::new(ShapeType::Ellipse, 4000000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    let status3 = Shape::new(ShapeType::Ellipse, 6200000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("FFC000"));
    let status4 = Shape::new(ShapeType::Ellipse, 8400000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    
    slides.push(
        SlideContent::new("Executive Dashboard - Q1 2024")
            .add_shape(kpi1)
            .add_shape(kpi2)
            .add_shape(kpi3)
            .add_shape(kpi4)
            .add_shape(status1)
            .add_shape(status2)
            .add_shape(status3)
            .add_shape(status4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 20: Summary Slide (NEW)
    // =========================================================================
    println!("📝 Slide 20: Summary with Speaker Notes");
    
    slides.push(
        SlideContent::new("Summary & Next Steps")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Completed: Research, Design, Initial Development")
            .add_bullet("In Progress: Sprint 3 Development")
            .add_bullet("Next: QA Testing Phase (Q4 2024)")
            .add_bullet("Launch Target: Q1 2025")
            .add_bullet("Key Risks: Resource constraints, Timeline pressure")
            .content_size(24)
            .notes("Speaker Notes:\n\n1. Emphasize the progress made\n2. Highlight key achievements\n3. Address any concerns about timeline\n4. Open for Q&A")
    );

    // =========================================================================
    // SLIDE 21: Bullet Styles (NEW v0.2.1)
    // =========================================================================
    println!("🔢 Slide 21: Bullet Styles (NEW)");
    
    // Numbered list
    slides.push(
        SlideContent::new("Bullet Styles - Numbered List")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .with_bullet_style(BulletStyle::Number)
            .add_bullet("First numbered item")
            .add_bullet("Second numbered item")
            .add_bullet("Third numbered item")
            .add_bullet("Fourth numbered item")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 22: Lettered Lists (NEW v0.2.1)
    // =========================================================================
    println!("🔤 Slide 22: Lettered Lists (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Lettered Lists")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_lettered("Option A - First choice")
            .add_lettered("Option B - Second choice")
            .add_lettered("Option C - Third choice")
            .add_lettered("Option D - Fourth choice")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 23: Roman Numerals (NEW v0.2.1)
    // =========================================================================
    println!("🏛️ Slide 23: Roman Numerals (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Roman Numerals")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .with_bullet_style(BulletStyle::RomanUpper)
            .add_bullet("Chapter I - Introduction")
            .add_bullet("Chapter II - Background")
            .add_bullet("Chapter III - Methodology")
            .add_bullet("Chapter IV - Results")
            .add_bullet("Chapter V - Conclusion")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 24: Custom Bullets (NEW v0.2.1)
    // =========================================================================
    println!("⭐ Slide 24: Custom Bullets (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Custom Characters")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_styled_bullet("Star bullet point", BulletStyle::Custom('★'))
            .add_styled_bullet("Arrow bullet point", BulletStyle::Custom('→'))
            .add_styled_bullet("Check bullet point", BulletStyle::Custom('✓'))
            .add_styled_bullet("Diamond bullet point", BulletStyle::Custom('◆'))
            .add_styled_bullet("Heart bullet point", BulletStyle::Custom('♥'))
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 25: Sub-bullets / Hierarchy (NEW v0.2.1)
    // =========================================================================
    println!("📊 Slide 25: Sub-bullets Hierarchy (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Hierarchical Lists")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Main Topic 1")
            .add_sub_bullet("Supporting detail A")
            .add_sub_bullet("Supporting detail B")
            .add_bullet("Main Topic 2")
            .add_sub_bullet("Supporting detail C")
            .add_sub_bullet("Supporting detail D")
            .add_bullet("Main Topic 3")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 26: Text Enhancements (NEW v0.2.1)
    // =========================================================================
    println!("✏️ Slide 26: Text Enhancements (NEW)");
    
    // Use BulletPoint with formatting
    let strikethrough_bullet = BulletPoint::new("Strikethrough: This text is crossed out").strikethrough();
    let highlight_bullet = BulletPoint::new("Highlight: Yellow background for emphasis").highlight("FFFF00");
    let subscript_bullet = BulletPoint::new("Subscript: H₂O - for chemical formulas").subscript();
    let superscript_bullet = BulletPoint::new("Superscript: x² - for math expressions").superscript();
    let bold_colored = BulletPoint::new("Combined: Bold + Red color").bold().color("FF0000");
    
    let mut text_enhancements_slide = SlideContent::new("Text Enhancements - New Formatting")
        .layout(SlideLayout::TitleAndContent)
        .title_color("1F497D")
        .title_bold(true)
        .content_size(24);
    text_enhancements_slide.bullets.push(strikethrough_bullet);
    text_enhancements_slide.bullets.push(highlight_bullet);
    text_enhancements_slide.bullets.push(subscript_bullet);
    text_enhancements_slide.bullets.push(superscript_bullet);
    text_enhancements_slide.bullets.push(bold_colored);
    
    slides.push(text_enhancements_slide);

    // =========================================================================
    // SLIDE 27: Font Size Presets (NEW v0.2.1)
    // =========================================================================
    println!("🔤 Slide 27: Font Size Presets (NEW)");
    
    // Demonstrate different font sizes per bullet
    let large_bullet = BulletPoint::new(&format!("LARGE: {}pt - Extra large text", font_sizes::LARGE)).font_size(font_sizes::LARGE);
    let heading_bullet = BulletPoint::new(&format!("HEADING: {}pt - Section headers", font_sizes::HEADING)).font_size(font_sizes::HEADING);
    let body_bullet = BulletPoint::new(&format!("BODY: {}pt - Regular content", font_sizes::BODY)).font_size(font_sizes::BODY);
    let small_bullet = BulletPoint::new(&format!("SMALL: {}pt - Smaller text", font_sizes::SMALL)).font_size(font_sizes::SMALL);
    let caption_bullet = BulletPoint::new(&format!("CAPTION: {}pt - Captions and notes", font_sizes::CAPTION)).font_size(font_sizes::CAPTION);
    
    let mut font_size_slide = SlideContent::new("Font Size Presets - Each line different size")
        .layout(SlideLayout::TitleAndContent)
        .title_color("1F497D")
        .title_bold(true)
        .title_size(font_sizes::TITLE);
    font_size_slide.bullets.push(large_bullet);
    font_size_slide.bullets.push(heading_bullet);
    font_size_slide.bullets.push(body_bullet);
    font_size_slide.bullets.push(small_bullet);
    font_size_slide.bullets.push(caption_bullet);
    
    slides.push(font_size_slide);

    // =========================================================================
    // SLIDE 28: Theme Colors (NEW v0.2.1)
    // =========================================================================
    println!("🎨 Slide 28: Theme Colors (NEW)");
    
    // Create shapes with theme colors
    let corporate_shape = Shape::new(ShapeType::Rectangle, 500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::CORPORATE.primary))
        .with_text("Corporate");
    
    let modern_shape = Shape::new(ShapeType::Rectangle, 2500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::MODERN.primary))
        .with_text("Modern");
    
    let vibrant_shape = Shape::new(ShapeType::Rectangle, 4500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::VIBRANT.primary))
        .with_text("Vibrant");
    
    let dark_shape = Shape::new(ShapeType::Rectangle, 6500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::DARK.primary))
        .with_text("Dark");
    
    let nature_shape = Shape::new(ShapeType::Rectangle, 500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::NATURE.primary))
        .with_text("Nature");
    
    let tech_shape = Shape::new(ShapeType::Rectangle, 2500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::TECH.primary))
        .with_text("Tech");
    
    let carbon_shape = Shape::new(ShapeType::Rectangle, 4500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::CARBON.primary))
        .with_text("Carbon");
    
    slides.push(
        SlideContent::new("Theme Color Palettes")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_shape(corporate_shape)
            .add_shape(modern_shape)
            .add_shape(vibrant_shape)
            .add_shape(dark_shape)
            .add_shape(nature_shape)
            .add_shape(tech_shape)
            .add_shape(carbon_shape)
    );

    // =========================================================================
    // SLIDE 29: Material & Carbon Design Colors (NEW v0.2.1)
    // =========================================================================
    println!("🌈 Slide 29: Material & Carbon Colors (NEW)");
    
    // Material Design colors
    let material_red = Shape::new(ShapeType::Rectangle, 500000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_RED))
        .with_text("M-Red");
    
    let material_blue = Shape::new(ShapeType::Rectangle, 1900000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_BLUE))
        .with_text("M-Blue");
    
    let material_green = Shape::new(ShapeType::Rectangle, 3300000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_GREEN))
        .with_text("M-Green");
    
    let material_orange = Shape::new(ShapeType::Rectangle, 4700000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_ORANGE))
        .with_text("M-Orange");
    
    let material_purple = Shape::new(ShapeType::Rectangle, 6100000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_PURPLE))
        .with_text("M-Purple");
    
    // Carbon Design colors
    let carbon_blue = Shape::new(ShapeType::Rectangle, 500000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_BLUE_60))
        .with_text("C-Blue");
    
    let carbon_green = Shape::new(ShapeType::Rectangle, 1900000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_GREEN_50))
        .with_text("C-Green");
    
    let carbon_red = Shape::new(ShapeType::Rectangle, 3300000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_RED_60))
        .with_text("C-Red");
    
    let carbon_purple = Shape::new(ShapeType::Rectangle, 4700000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_PURPLE_60))
        .with_text("C-Purple");
    
    let carbon_gray = Shape::new(ShapeType::Rectangle, 6100000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_GRAY_100))
        .with_text("C-Gray");
    
    slides.push(
        SlideContent::new("Material & Carbon Design Colors")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_shape(material_red)
            .add_shape(material_blue)
            .add_shape(material_green)
            .add_shape(material_orange)
            .add_shape(material_purple)
            .add_shape(carbon_blue)
            .add_shape(carbon_green)
            .add_shape(carbon_red)
            .add_shape(carbon_purple)
            .add_shape(carbon_gray)
    );

    // =========================================================================
    // SLIDE 30: Image from Base64 (NEW v0.2.1)
    // =========================================================================
    println!("🖼️ Slide 30: Image from Base64 (NEW)");
    
    // 1x1 red PNG pixel in base64
    let _red_pixel_base64 = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8DwHwAFBQIAX8jx0gAAAABJRU5ErkJggg==";
    
    // Create image from base64 (demonstrating the API)
    let _base64_image = ImageBuilder::from_base64(_red_pixel_base64, 914400, 914400, "PNG")
        .position(4000000, 2500000)
        .build();
    
    slides.push(
        SlideContent::new("Image Loading - New Methods")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Image::new(path) - Load from file path")
            .add_bullet("Image::from_base64(data) - Load from base64 string")
            .add_bullet("Image::from_bytes(data) - Load from raw bytes")
            .add_bullet("ImageBuilder for fluent API configuration")
            .add_bullet("Built-in base64 decoder (no external deps)")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 31: Feature Summary (NEW v0.2.1)
    // =========================================================================
    println!("📋 Slide 31: v0.2.1 Feature Summary (NEW)");
    
    slides.push(
        SlideContent::new("New Features in v0.2.1")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_numbered("BulletStyle: Number, Letter, Roman, Custom")
            .add_numbered("TextFormat: Strikethrough, Highlight")
            .add_numbered("TextFormat: Subscript, Superscript")
            .add_numbered("Font size presets in prelude")
            .add_numbered("Image::from_base64 and from_bytes")
            .add_numbered("Theme color palettes (7 themes)")
            .add_numbered("Material & Carbon Design colors")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 32: Slide Show Settings - Comparison Table (REAL: embedded in presProps.xml)
    // =========================================================================
    println!("🎬 Slide 34: Slide Show Settings (Visual)");

    let show_speaker = SlideShowSettings::new().pen_color(PenColor::red());
    let show_kiosk = SlideShowSettings::kiosk();
    let _show_range = SlideShowSettings::new()
        .show_type(ShowType::Browsed)
        .slide_range(SlideRange::Range { start: 1, end: 10 })
        .without_animation(true);
    let _speaker_xml = show_speaker.to_xml();
    let _kiosk_xml = show_kiosk.to_xml();

    let show_table = TableBuilder::new(vec![2000000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Setting").bold().background_color("1F4E79").text_color("FFFFFF"),
            TableCell::new("Speaker").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Kiosk").bold().background_color("ED7D31").text_color("FFFFFF"),
            TableCell::new("Browsed").bold().background_color("70AD47").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Loop").bold().background_color("D6E4F0"),
            TableCell::new("No"), TableCell::new("Yes").bold().text_color("2E7D32"),
            TableCell::new("No"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Narration").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("No").text_color("C62828"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Animation").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("Yes"),
            TableCell::new("No").text_color("C62828"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Timings").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("Auto"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Slide Range").bold().background_color("D6E4F0"),
            TableCell::new("All"), TableCell::new("All"),
            TableCell::new("1-10"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Pen Color").bold().background_color("D6E4F0"),
            TableCell::new("Red").text_color("FF0000"),
            TableCell::new("Red").text_color("FF0000"),
            TableCell::new("Red").text_color("FF0000"),
        ]))
        .position(300000, 1600000)
        .build();

    // Mode icons
    let icon_speaker = Shape::new(ShapeType::RoundedRectangle, 300000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Speaker: Full control");
    let icon_kiosk = Shape::new(ShapeType::RoundedRectangle, 3100000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Kiosk: Auto-loop");
    let icon_browsed = Shape::new(ShapeType::RoundedRectangle, 5900000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Browsed: Scrollbar");

    slides.push(
        SlideContent::new("Slide Show Settings - Mode Comparison")
            .table(show_table)
            .add_shape(icon_speaker)
            .add_shape(icon_kiosk)
            .add_shape(icon_browsed)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 35: Print Settings - Visual Handout Grid
    // =========================================================================
    println!("🖨️  Slide 35: Print Settings & Handouts (Visual)");

    let print = PrintSettings::new()
        .print_what(PrintWhat::Handouts)
        .color_mode(PrintColorMode::Grayscale)
        .handout_layout(GenHandoutLayout::SlidesPerPage6)
        .frame_slides(true)
        .header("Q1 2025 Strategy Review")
        .footer("Confidential - Internal Use Only")
        .print_date(true)
        .print_page_numbers(true);
    let _prnpr_xml = print.to_prnpr_xml();
    let _handout_xml = print.to_handout_master_xml();

    // Visual: 6-slide handout grid (2 cols x 3 rows)
    let hdr = Shape::new(ShapeType::Rectangle, 300000, 1500000, 4200000, 300000)
        .with_fill(ShapeFill::new("E7E6E6"))
        .with_text("Q1 2025 Strategy Review");
    // Row 1
    let s1 = Shape::new(ShapeType::Rectangle, 400000, 2000000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 1");
    let s2 = Shape::new(ShapeType::Rectangle, 2500000, 2000000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 2");
    // Row 2
    let s3 = Shape::new(ShapeType::Rectangle, 400000, 3200000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 3");
    let s4 = Shape::new(ShapeType::Rectangle, 2500000, 3200000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 4");
    // Row 3
    let s5 = Shape::new(ShapeType::Rectangle, 400000, 4400000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 5");
    let s6 = Shape::new(ShapeType::Rectangle, 2500000, 4400000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 6");
    let ftr = Shape::new(ShapeType::Rectangle, 300000, 5600000, 4200000, 300000)
        .with_fill(ShapeFill::new("E7E6E6"))
        .with_text("Confidential - Internal Use Only");

    // Settings summary table on the right
    let print_table = TableBuilder::new(vec![1800000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Print Settings").bold().background_color("1F4E79").text_color("FFFFFF"),
            TableCell::new("").background_color("1F4E79"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Print What").bold().background_color("D6E4F0"),
            TableCell::new("Handouts"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Color Mode").bold().background_color("D6E4F0"),
            TableCell::new("Grayscale"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Layout").bold().background_color("D6E4F0"),
            TableCell::new("6 slides/page"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Frame Slides").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Date").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Page Numbers").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .position(5000000, 1800000)
        .build();

    slides.push(
        SlideContent::new("Print Handout - 6 Slides Per Page")
            .table(print_table)
            .add_shape(hdr)
            .add_shape(s1).add_shape(s2)
            .add_shape(s3).add_shape(s4)
            .add_shape(s5).add_shape(s6)
            .add_shape(ftr)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 36: Advanced Table Merging - Actual Merged Table
    // =========================================================================
    println!("📊 Slide 36: Advanced Table Merging (Visual)");

    // Use TableMergeMap to compute states, then build a visual table
    let mut merge_map = TableMergeMap::new(5, 4);
    merge_map.merge_cells(0, 0, 1, 4).unwrap(); // Title row spans all 4 cols
    merge_map.merge_cells(1, 0, 2, 1).unwrap(); // "Products" spans 2 rows
    merge_map.merge_cells(3, 0, 2, 1).unwrap(); // "Services" spans 2 rows

    // Show merge state labels
    let state_00 = merge_map.cell_state(0, 0); // Anchor gridSpan=4
    let state_01 = merge_map.cell_state(0, 1); // HMerge
    let state_10 = merge_map.cell_state(1, 0); // Anchor rowSpan=2
    let state_20 = merge_map.cell_state(2, 0); // VMerge
    println!("   ├── (0,0): {}", state_00.to_xml_attrs().trim());
    println!("   ├── (0,1): {}", state_01.to_xml_attrs().trim());
    println!("   ├── (1,0): {}", state_10.to_xml_attrs().trim());
    println!("   └── (2,0): {}", state_20.to_xml_attrs().trim());

    // Build the table with REAL merge attributes (gridSpan, rowSpan, hMerge, vMerge)
    let merge_table = TableBuilder::new(vec![1500000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2025 Revenue Report").bold().background_color("1F4E79").text_color("FFFFFF").grid_span(4),
            TableCell::new("").background_color("1F4E79").h_merge(),
            TableCell::new("").background_color("1F4E79").h_merge(),
            TableCell::new("").background_color("1F4E79").h_merge(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Products").bold().background_color("BDD7EE").text_color("1F497D").row_span(2),
            TableCell::new("Hardware").background_color("E2EFDA"),
            TableCell::new("$450,000").text_color("2E7D32").align_right(),
            TableCell::new("+12%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("").background_color("BDD7EE").v_merge(),
            TableCell::new("Software").background_color("E2EFDA"),
            TableCell::new("$680,000").text_color("2E7D32").align_right(),
            TableCell::new("+25%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Services").bold().background_color("FCE4D6").text_color("C65911").row_span(2),
            TableCell::new("Consulting").background_color("FFF2CC"),
            TableCell::new("$320,000").text_color("2E7D32").align_right(),
            TableCell::new("+8%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("").background_color("FCE4D6").v_merge(),
            TableCell::new("Support").background_color("FFF2CC"),
            TableCell::new("$190,000").text_color("2E7D32").align_right(),
            TableCell::new("+5%").bold().text_color("2E7D32").align_right(),
        ]))
        .position(300000, 1600000)
        .build();

    // Legend shapes
    let legend_anchor = Shape::new(ShapeType::RoundedRectangle, 300000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Anchor (gridSpan/rowSpan)");
    let legend_hmerge = Shape::new(ShapeType::RoundedRectangle, 2500000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("hMerge (col covered)");
    let legend_vmerge = Shape::new(ShapeType::RoundedRectangle, 4700000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("vMerge (row covered)");
    let legend_normal = Shape::new(ShapeType::RoundedRectangle, 6900000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"))
        .with_text("Normal (no merge)");

    slides.push(
        SlideContent::new("Advanced Table Merging - Merged Cells")
            .table(merge_table)
            .add_shape(legend_anchor)
            .add_shape(legend_hmerge)
            .add_shape(legend_vmerge)
            .add_shape(legend_normal)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // Build PresentationSettings with all advanced features
    // =========================================================================
    println!("\n⚙️  Building Presentation Settings...");

    // Slide show settings (embedded in presProps.xml as <p:showPr>)
    let show_settings = SlideShowSettings::new()
        .show_type(ShowType::Speaker)
        .pen_color(PenColor::red())
        .use_timings(true);
    println!("   ├── Slide Show: Speaker mode, red pen, timings enabled");
    println!("   │   └── XML: {} bytes", show_settings.to_xml().len());

    // Print settings (embedded in presProps.xml as <p:prnPr>)
    let print_settings = PrintSettings::new()
        .print_what(PrintWhat::Handouts)
        .color_mode(PrintColorMode::Grayscale)
        .handout_layout(GenHandoutLayout::SlidesPerPage6)
        .frame_slides(true)
        .header("Q1 2025 Strategy Review")
        .footer("Confidential - Internal Use Only")
        .print_date(true)
        .print_page_numbers(true);
    println!("   └── Print: Handouts, 6/page, grayscale, framed");
    println!("       └── XML: {} bytes", print_settings.to_prnpr_xml().len());

    let pres_settings = PresentationSettings::new()
        .slide_show(show_settings)
        .print(print_settings);
    println!("   All settings configured → presProps.xml");

    // =========================================================================
    // Generate PPTX with real integrated features
    // =========================================================================
    println!("\n📦 Generating PPTX with integrated features...");
    let pptx_data = create_pptx_with_settings(
        "PPTX-RS Element Showcase",
        slides.clone(),
        Some(pres_settings),
    )?;
    fs::write("comprehensive_demo.pptx", &pptx_data)?;
    println!("   ✓ Created comprehensive_demo.pptx ({} slides, {} bytes)", 
             slides.len(), pptx_data.len());

    // =========================================================================
    // Package Analysis - Demonstrate Reading
    // =========================================================================
    println!("\n📖 Package Analysis (Read Capability):");
    
    let package = Package::open("comprehensive_demo.pptx")?;
    let paths = package.part_paths();
    
    let slide_count = paths.iter()
        .filter(|p| p.starts_with("ppt/slides/slide") && p.ends_with(".xml"))
        .count();
    
    println!("   ├── Total parts: {}", package.part_count());
    println!("   ├── Slides: {}", slide_count);
    println!("   └── Package opened and analyzed successfully");

    // =========================================================================
    // NEW: Parts API Demonstration
    // =========================================================================
    println!("\n🧩 Parts API Demonstration:");
    
    // SlideLayoutPart - 11 layout types
    println!("   ┌── SlideLayoutPart (11 layout types):");
    let layouts = [
        LayoutType::Title,
        LayoutType::TitleAndContent,
        LayoutType::SectionHeader,
        LayoutType::TwoContent,
        LayoutType::Comparison,
        LayoutType::TitleOnly,
        LayoutType::Blank,
        LayoutType::ContentWithCaption,
        LayoutType::PictureWithCaption,
        LayoutType::TitleAndVerticalText,
        LayoutType::VerticalTitleAndText,
    ];
    for (i, layout_type) in layouts.iter().enumerate() {
        let layout = SlideLayoutPart::new(i + 1, *layout_type);
        if i < 3 {
            println!("   │   ├── {}: {} ({})", i + 1, layout_type.name(), layout.path());
        }
    }
    println!("   │   └── ... and {} more layout types", layouts.len() - 3);
    
    // SlideMasterPart
    println!("   ├── SlideMasterPart:");
    let mut master = SlideMasterPart::new(1);
    master.set_name("Custom Master");
    master.add_layout_rel_id("rId2");
    master.add_layout_rel_id("rId3");
    println!("   │   ├── Name: {}", master.name());
    println!("   │   ├── Path: {}", master.path());
    println!("   │   └── Layouts: {} linked", master.layout_rel_ids().len());
    
    // ThemePart - Colors and Fonts
    println!("   ├── ThemePart (colors & fonts):");
    let mut theme = ThemePart::new(1);
    theme.set_name("Corporate Theme");
    theme.set_major_font("Arial");
    theme.set_minor_font("Calibri");
    theme.set_color("accent1", "FF5733");
    theme.set_color("accent2", "33FF57");
    let theme_xml = theme.to_xml()?;
    println!("   │   ├── Name: {}", theme.name());
    println!("   │   ├── Major Font: Arial");
    println!("   │   ├── Minor Font: Calibri");
    println!("   │   └── XML size: {} bytes", theme_xml.len());
    
    // NotesSlidePart - Speaker notes
    println!("   ├── NotesSlidePart (speaker notes):");
    let notes = NotesSlidePart::with_text(1, "Remember to:\n- Introduce yourself\n- Explain the agenda\n- Ask for questions");
    let notes_xml = notes.to_xml()?;
    println!("   │   ├── Path: {}", notes.path());
    println!("   │   ├── Text: \"{}...\"", &notes.notes_text()[..20.min(notes.notes_text().len())]);
    println!("   │   └── XML size: {} bytes", notes_xml.len());
    
    // AppPropertiesPart - Application metadata
    println!("   ├── AppPropertiesPart (metadata):");
    let mut app_props = AppPropertiesPart::new();
    app_props.set_company("Acme Corporation");
    app_props.set_slides(slides.len() as u32);
    let app_xml = app_props.to_xml()?;
    println!("   │   ├── Company: Acme Corporation");
    println!("   │   ├── Slides: {}", slides.len());
    println!("   │   └── XML size: {} bytes", app_xml.len());
    
    // MediaPart - Video/Audio formats
    println!("   ├── MediaPart (10 media formats):");
    println!("   │   ├── Video: mp4, webm, avi, wmv, mov");
    println!("   │   ├── Audio: mp3, wav, wma, m4a, ogg");
    let sample_media = MediaPart::new(1, MediaFormat::Mp4, vec![0; 100]);
    println!("   │   └── Sample: {} ({})", sample_media.path(), sample_media.format().mime_type());
    
    // TablePart - Table with formatting
    println!("   ├── TablePart (cell formatting):");
    let table_part = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Header 1").bold().background("4472C4"),
            TableCellPart::new("Header 2").bold().background("4472C4"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Data 1").color("333333"),
            TableCellPart::new("Data 2").italic(),
        ]))
        .position(EMU_PER_INCH, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 6, EMU_PER_INCH * 2);
    let table_xml = table_part.to_slide_xml(10);
    println!("   │   ├── Rows: {}", table_part.rows.len());
    println!("   │   ├── Features: bold, italic, colors, backgrounds");
    println!("   │   └── XML size: {} bytes", table_xml.len());
    
    // ContentTypesPart
    println!("   └── ContentTypesPart:");
    let mut content_types = ContentTypesPart::new();
    content_types.add_presentation();
    content_types.add_slide(1);
    content_types.add_slide_layout(1);
    content_types.add_slide_master(1);
    content_types.add_theme(1);
    content_types.add_core_properties();
    content_types.add_app_properties();
    let ct_xml = content_types.to_xml()?;
    println!("       ├── Path: {}", content_types.path());
    println!("       └── XML size: {} bytes", ct_xml.len());

    // =========================================================================
    // NEW: Elements API Demonstration
    // =========================================================================
    println!("\n🎨 Elements API Demonstration:");
    
    // Color types
    println!("   ┌── Color Types:");
    let rgb = RgbColor::new(255, 87, 51);
    let rgb_hex = RgbColor::from_hex("#4472C4").unwrap();
    let scheme = SchemeColor::Accent1;
    let color = Color::rgb(100, 149, 237);
    println!("   │   ├── RgbColor::new(255, 87, 51) → {}", rgb.to_hex());
    println!("   │   ├── RgbColor::from_hex(\"#4472C4\") → {}", rgb_hex.to_hex());
    println!("   │   ├── SchemeColor::Accent1 → {}", scheme.as_str());
    println!("   │   └── Color::rgb(100, 149, 237) → XML: {}", color.to_xml().chars().take(30).collect::<String>());
    
    // Position and Size
    println!("   ├── Position & Size (EMU units):");
    let pos = Position::from_inches(1.0, 2.0);
    let size = Size::from_inches(4.0, 3.0);
    println!("   │   ├── Position::from_inches(1.0, 2.0) → x={}, y={}", pos.x, pos.y);
    println!("   │   ├── Size::from_inches(4.0, 3.0) → w={}, h={}", size.width, size.height);
    println!("   │   └── EMU_PER_INCH = {}", EMU_PER_INCH);
    
    // Transform
    println!("   └── Transform (position + size + rotation):");
    let transform = Transform::from_inches(1.0, 1.5, 3.0, 2.0).with_rotation(45.0);
    let transform_xml = transform.to_xml();
    println!("       ├── Transform::from_inches(1.0, 1.5, 3.0, 2.0)");
    println!("       ├── .with_rotation(45.0)");
    println!("       └── XML: {}...", &transform_xml[..50.min(transform_xml.len())]);

    // =========================================================================
    // NEW: Advanced Features Demonstration
    // =========================================================================
    println!("\n🚀 Advanced Features Demonstration:");

    // -------------------------------------------------------------------------
    // Complex Table Examples
    // -------------------------------------------------------------------------
    println!("   ┌── Complex Table Examples:");
    
    // Example 1: Financial Report Table
    println!("   │   ┌── Financial Report Table (5x4 with formatting):");
    let financial_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Q1 2024 Financial Summary")
                .col_span(4)
                .bold()
                .center()
                .background("1F4E79")
                .color("FFFFFF")
                .font_size(14)
                .font("Arial Black"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Category").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Revenue").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Expenses").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Profit").bold().center().background("2E75B6").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Product Sales").align(HorizontalAlign::Left),
            TableCellPart::new("$1,250,000").align(HorizontalAlign::Right).color("2E7D32"),
            TableCellPart::new("$450,000").align(HorizontalAlign::Right).color("C62828"),
            TableCellPart::new("$800,000").align(HorizontalAlign::Right).bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Services").align(HorizontalAlign::Left),
            TableCellPart::new("$890,000").align(HorizontalAlign::Right).color("2E7D32"),
            TableCellPart::new("$320,000").align(HorizontalAlign::Right).color("C62828"),
            TableCellPart::new("$570,000").align(HorizontalAlign::Right).bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Total").bold().background("E7E6E6"),
            TableCellPart::new("$2,140,000").bold().align(HorizontalAlign::Right).background("E7E6E6"),
            TableCellPart::new("$770,000").bold().align(HorizontalAlign::Right).background("E7E6E6"),
            TableCellPart::new("$1,370,000").bold().align(HorizontalAlign::Right).background("C6EFCE").color("006100"),
        ]))
        .position(EMU_PER_INCH / 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 8, EMU_PER_INCH * 3);
    let fin_xml = financial_table.to_slide_xml(100);
    println!("   │   │   ├── Merged header spanning 4 columns");
    println!("   │   │   ├── Color-coded values (green=positive, red=negative)");
    println!("   │   │   ├── Custom fonts and sizes");
    println!("   │   │   └── XML: {} bytes", fin_xml.len());

    // Example 2: Comparison Matrix
    println!("   │   ├── Comparison Matrix (features vs products):");
    let matrix_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Feature").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Basic").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Pro").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Enterprise").bold().center().background("4472C4").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Storage").align(HorizontalAlign::Left),
            TableCellPart::new("5 GB").center(),
            TableCellPart::new("50 GB").center(),
            TableCellPart::new("Unlimited").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Users").align(HorizontalAlign::Left),
            TableCellPart::new("1").center(),
            TableCellPart::new("10").center(),
            TableCellPart::new("Unlimited").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Support").align(HorizontalAlign::Left),
            TableCellPart::new("Email").center(),
            TableCellPart::new("24/7 Chat").center(),
            TableCellPart::new("Dedicated").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Price/mo").bold().background("F2F2F2"),
            TableCellPart::new("$9").center().bold().background("F2F2F2"),
            TableCellPart::new("$29").center().bold().background("F2F2F2"),
            TableCellPart::new("$99").center().bold().background("F2F2F2"),
        ]));
    println!("   │   │   └── 5x4 matrix with alternating styles");

    // Example 3: Schedule/Timeline Table
    println!("   │   └── Schedule Table (with row spans):");
    let schedule_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Time").bold().center().background("70AD47").color("FFFFFF"),
            TableCellPart::new("Monday").bold().center().background("70AD47").color("FFFFFF"),
            TableCellPart::new("Tuesday").bold().center().background("70AD47").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("9:00 AM").center().background("E2EFDA"),
            TableCellPart::new("Team Standup").center().row_span(2).valign(VerticalAlign::Middle).background("BDD7EE"),
            TableCellPart::new("Code Review").center(),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("10:00 AM").center().background("E2EFDA"),
            TableCellPart::merged(),
            TableCellPart::new("Sprint Planning").center().background("FCE4D6"),
        ]));
    println!("   │       └── Row spans for multi-hour events");

    // -------------------------------------------------------------------------
    // Complex Animation Sequences
    // -------------------------------------------------------------------------
    println!("   ├── Complex Animation Sequences:");
    
    // Sequence 1: Title entrance with staggered content
    println!("   │   ┌── Staggered Entrance Sequence:");
    let title_anim = Animation::new(2, AnimationEffect::Fade)
        .trigger(AnimationTrigger::OnClick)
        .duration(500);
    let content1 = Animation::new(3, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(200);
    let content2 = Animation::new(4, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(100);
    let content3 = Animation::new(5, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(100);
    let staggered = SlideAnimations::new()
        .add(title_anim)
        .add(content1)
        .add(content2)
        .add(content3)
        .transition(SlideTransition::new(TransitionEffect::Push).direction(AnimationDirection::Left).duration(750));
    let staggered_xml = staggered.to_timing_xml()?;
    println!("   │   │   ├── Title: Fade on click");
    println!("   │   │   ├── Content 1-3: FlyIn with 100ms stagger");
    println!("   │   │   ├── Transition: Push from left (750ms)");
    println!("   │   │   └── XML: {} bytes", staggered_xml.len());

    // Sequence 2: Emphasis and exit
    println!("   │   ├── Emphasis + Exit Sequence:");
    let emphasis = Animation::new(6, AnimationEffect::Pulse)
        .trigger(AnimationTrigger::OnClick)
        .duration(1000)
        .repeat(3);
    let exit = Animation::new(6, AnimationEffect::FadeOut)
        .trigger(AnimationTrigger::AfterPrevious)
        .duration(500);
    let emphasis_seq = SlideAnimations::new()
        .add(emphasis)
        .add(exit);
    println!("   │   │   ├── Pulse 3x on click, then fade out");
    println!("   │   │   └── Same shape, sequential effects");

    // Sequence 3: Motion path
    println!("   │   └── Motion Path Animation:");
    let motion = Animation::new(7, AnimationEffect::Lines)
        .trigger(AnimationTrigger::OnClick)
        .duration(2000);
    println!("   │       └── Custom path: Lines, Arcs, Turns, Loops");

    // -------------------------------------------------------------------------
    // SmartArt Combinations
    // -------------------------------------------------------------------------
    println!("   ├── SmartArt Layout Examples:");
    
    // Process flow
    println!("   │   ┌── Process Flow (5 steps):");
    let process = SmartArtPart::new(1, SmartArtLayout::BasicProcess)
        .add_items(vec!["Research", "Design", "Develop", "Test", "Deploy"])
        .position(EMU_PER_INCH / 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 8, EMU_PER_INCH * 2);
    println!("   │   │   └── {} nodes in horizontal flow", process.nodes().len());

    // Organization chart
    println!("   │   ├── Organization Chart:");
    let org = SmartArtPart::new(2, SmartArtLayout::OrgChart)
        .add_items(vec!["CEO", "CTO", "CFO", "VP Engineering", "VP Sales"]);
    println!("   │   │   └── Hierarchical structure with {} positions", org.nodes().len());

    // Cycle diagram
    println!("   │   ├── Cycle Diagram:");
    let cycle = SmartArtPart::new(3, SmartArtLayout::BasicCycle)
        .add_items(vec!["Plan", "Do", "Check", "Act"]);
    println!("   │   │   └── PDCA cycle with {} phases", cycle.nodes().len());

    // Venn diagram
    println!("   │   ├── Venn Diagram:");
    let venn = SmartArtPart::new(4, SmartArtLayout::BasicVenn)
        .add_items(vec!["Skills", "Passion", "Market Need"]);
    println!("   │   │   └── 3-circle Venn for Ikigai concept");

    // Pyramid
    println!("   │   └── Pyramid:");
    let pyramid = SmartArtPart::new(5, SmartArtLayout::BasicPyramid)
        .add_items(vec!["Self-Actualization", "Esteem", "Love/Belonging", "Safety", "Physiological"]);
    println!("   │       └── Maslow's hierarchy with {} levels", pyramid.nodes().len());

    // -------------------------------------------------------------------------
    // 3D Model Configurations
    // -------------------------------------------------------------------------
    println!("   ├── 3D Model Configurations:");
    
    // Product showcase
    println!("   │   ┌── Product Showcase:");
    let product_3d = Model3DPart::new(1, Model3DFormat::Glb, vec![0; 100])
        .camera(CameraPreset::IsometricTopUp)
        .rotation(0.0, 45.0, 0.0)
        .zoom(1.2)
        .position(EMU_PER_INCH * 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 4, EMU_PER_INCH * 4);
    println!("   │   │   ├── Camera: Isometric top-up view");
    println!("   │   │   ├── Rotation: 45° Y-axis for best angle");
    println!("   │   │   └── Zoom: 1.2x for detail");

    // Architectural model
    println!("   │   ├── Architectural Model:");
    let arch_3d = Model3DPart::new(2, Model3DFormat::Gltf, vec![0; 100])
        .camera(CameraPreset::Front)
        .rotation(15.0, -30.0, 0.0)
        .ambient_light("FFFFCC");
    println!("   │   │   ├── Camera: Front view with tilt");
    println!("   │   │   └── Ambient: Warm lighting (FFFFCC)");

    // Technical diagram
    println!("   │   └── Technical Diagram:");
    let tech_3d = Model3DPart::new(3, Model3DFormat::Obj, vec![0; 100])
        .camera(CameraPreset::IsometricOffAxis1Top)
        .rotation(0.0, 0.0, 0.0);
    println!("   │       └── Camera: Off-axis isometric for exploded view");

    // -------------------------------------------------------------------------
    // Theme + Master + Layout Combination
    // -------------------------------------------------------------------------
    println!("   ├── Theme + Master + Layout Integration:");
    
    // Corporate theme
    let mut corp_theme = ThemePart::new(1);
    corp_theme.set_name("Corporate Blue");
    corp_theme.set_major_font("Segoe UI");
    corp_theme.set_minor_font("Segoe UI Light");
    corp_theme.set_color("dk1", "000000");
    corp_theme.set_color("lt1", "FFFFFF");
    corp_theme.set_color("dk2", "1F497D");
    corp_theme.set_color("lt2", "EEECE1");
    corp_theme.set_color("accent1", "4472C4");
    corp_theme.set_color("accent2", "ED7D31");
    corp_theme.set_color("accent3", "A5A5A5");
    corp_theme.set_color("accent4", "FFC000");
    corp_theme.set_color("accent5", "5B9BD5");
    corp_theme.set_color("accent6", "70AD47");
    let theme_xml = corp_theme.to_xml()?;
    println!("   │   ├── Theme: Corporate Blue");
    println!("   │   │   ├── Fonts: Segoe UI / Segoe UI Light");
    println!("   │   │   ├── 12 color slots defined");
    println!("   │   │   └── XML: {} bytes", theme_xml.len());

    // Master with multiple layouts
    let mut corp_master = SlideMasterPart::new(1);
    corp_master.set_name("Corporate Master");
    corp_master.add_layout_rel_id("rId2"); // Title
    corp_master.add_layout_rel_id("rId3"); // Title + Content
    corp_master.add_layout_rel_id("rId4"); // Section Header
    corp_master.add_layout_rel_id("rId5"); // Two Content
    corp_master.add_layout_rel_id("rId6"); // Comparison
    corp_master.add_layout_rel_id("rId7"); // Title Only
    corp_master.add_layout_rel_id("rId8"); // Blank
    println!("   │   └── Master: {} with {} layouts linked", corp_master.name(), corp_master.layout_rel_ids().len());

    // -------------------------------------------------------------------------
    // VBA + Custom XML Integration
    // -------------------------------------------------------------------------
    println!("   ├── VBA + Custom XML Integration:");
    
    // VBA with multiple modules
    let vba_project = VbaProjectPart::new()
        .add_module(VbaModule::new("AutoRun", r#"
Sub Auto_Open()
    MsgBox "Welcome to the presentation!"
End Sub

Sub NavigateToSlide(slideNum As Integer)
    SlideShowWindows(1).View.GotoSlide slideNum
End Sub
"#))
        .add_module(VbaModule::new("DataHelpers", r#"
Function GetCustomData(key As String) As String
    ' Read from Custom XML part
    GetCustomData = ActivePresentation.CustomXMLParts(1).SelectSingleNode("//" & key).Text
End Function
"#))
        .add_module(VbaModule::class("SlideController", r#"
Private currentSlide As Integer

Public Sub NextSlide()
    currentSlide = currentSlide + 1
    NavigateToSlide currentSlide
End Sub
"#));
    println!("   │   ├── VBA Project:");
    println!("   │   │   ├── AutoRun: Auto_Open, NavigateToSlide");
    println!("   │   │   ├── DataHelpers: GetCustomData (reads Custom XML)");
    println!("   │   │   └── SlideController: Class for navigation");

    // Custom XML with structured data
    let app_config = CustomXmlPart::new(1, "presentationConfig")
        .namespace("http://company.com/pptx/config")
        .property("version", "2.1.0")
        .property("author", "Demo User")
        .property("department", "Engineering")
        .property("confidentiality", "Internal")
        .property("lastModified", "2024-01-15T10:30:00Z");
    let config_xml = app_config.to_xml()?;
    println!("   │   └── Custom XML:");
    println!("   │       ├── Namespace: http://company.com/pptx/config");
    println!("   │       ├── Properties: version, author, department, etc.");
    println!("   │       └── XML: {} bytes", config_xml.len());

    // -------------------------------------------------------------------------
    // Embedded Fonts with Variants
    // -------------------------------------------------------------------------
    println!("   ├── Embedded Font Collection:");
    let mut font_collection = EmbeddedFontCollection::new();
    font_collection.add("Corporate Sans", vec![0; 1000]);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::Bold);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::Italic);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::BoldItalic);
    font_collection.add("Code Mono", vec![0; 800]);
    let fonts_xml = font_collection.to_xml();
    println!("   │   ├── Corporate Sans: Regular, Bold, Italic, BoldItalic");
    println!("   │   ├── Code Mono: Regular");
    println!("   │   ├── Total: {} font files", font_collection.len());
    println!("   │   └── XML: {} bytes", fonts_xml.len());

    // -------------------------------------------------------------------------
    // Handout with Full Configuration
    // -------------------------------------------------------------------------
    println!("   └── Handout Master Configuration:");
    let handout = HandoutMasterPart::new()
        .layout(HandoutLayout::SlidesPerPage6)
        .header("Q1 2024 Strategy Review")
        .footer("Confidential - Internal Use Only");
    let handout_xml = handout.to_xml()?;
    println!("       ├── Layout: 6 slides per page");
    println!("       ├── Header: Q1 2024 Strategy Review");
    println!("       ├── Footer: Confidential - Internal Use Only");
    println!("       └── XML: {} bytes", handout_xml.len());

    // =========================================================================
    // Summary
    // =========================================================================
    println!("\n╔══════════════════════════════════════════════════════════════╗");
    println!("║                    Element Coverage Summary                   ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  LAYOUTS (6 types):                                          ║");
    println!("║    ✓ CenteredTitle    ✓ TitleOnly      ✓ TitleAndContent     ║");
    println!("║    ✓ TitleAndBigContent  ✓ TwoColumn   ✓ Blank               ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  TEXT FORMATTING:                                            ║");
    println!("║    ✓ Bold            ✓ Italic         ✓ Underline            ║");
    println!("║    ✓ Font Size       ✓ Font Color     ✓ Title/Content styles ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  TABLES:                                                     ║");
    println!("║    ✓ Multiple rows/columns  ✓ Bold cells  ✓ Background colors║");
    println!("║    ✓ Header styling         ✓ Position control               ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  CHARTS:                                                     ║");
    println!("║    ✓ Bar Chart       ✓ Line Chart     ✓ Pie Chart            ║");
    println!("║    ✓ Multiple series ✓ Categories                            ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  SHAPES:                                                     ║");
    println!("║    ✓ Rectangle       ✓ Ellipse        ✓ RoundedRectangle     ║");
    println!("║    ✓ Triangle        ✓ Diamond        ✓ Color fills          ║");
    println!("║    ✓ Gradient fills  ✓ Transparency   ✓ Text in shapes       ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  CONNECTORS (NEW):                                           ║");
    println!("║    ✓ Straight        ✓ Elbow          ✓ Curved               ║");
    println!("║    ✓ Arrow types     ✓ Dash styles    ✓ Line colors/widths   ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  IMAGES:                                                     ║");
    println!("║    ✓ Image placeholders  ✓ Position   ✓ Dimensions           ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  PACKAGE:                                                    ║");
    println!("║    ✓ Create PPTX     ✓ Read PPTX      ✓ Analyze contents     ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  PARTS API (NEW):                                            ║");
    println!("║    ✓ SlideLayoutPart (11 types)  ✓ SlideMasterPart           ║");
    println!("║    ✓ ThemePart (colors/fonts)    ✓ NotesSlidePart            ║");
    println!("║    ✓ AppPropertiesPart           ✓ MediaPart (10 formats)    ║");
    println!("║    ✓ TablePart (cell formatting) ✓ ContentTypesPart          ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  ELEMENTS API:                                               ║");
    println!("║    ✓ RgbColor        ✓ SchemeColor    ✓ Color enum           ║");
    println!("║    ✓ Position        ✓ Size           ✓ Transform            ║");
    println!("║    ✓ EMU conversions (inches, cm, mm, pt)                    ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  ADVANCED FEATURES (NEW):                                    ║");
    println!("║    ✓ Animation (50+ effects)  ✓ Transitions (27 types)       ║");
    println!("║    ✓ SmartArt (25 layouts)    ✓ 3D Models (GLB/GLTF/OBJ)     ║");
    println!("║    ✓ VBA Macros (.pptm)       ✓ Embedded Fonts               ║");
    println!("║    ✓ Custom XML               ✓ Handout Master               ║");
    println!("║    ✓ Table borders/alignment  ✓ Merged cells                 ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  Output: comprehensive_demo.pptx ({} slides, {} KB)         ║", 
             slides.len(), pptx_data.len() / 1024);
    println!("╚══════════════════════════════════════════════════════════════╝");

    Ok(())
}

pub fn add_sub_bullet(self, text: &str) -> Self

Add a sub-bullet (indented)

Examples found in repository

examples/new_features_demo.rs (line 44)

fn main() -> std::result::Result<(), Box<dyn std::error::Error>> {
    // Create output directory
    std::fs::create_dir_all("examples/output")?;

    // 1. Bullet Styles Demo
    println!("Creating bullet styles demo...");
    
    // Numbered list slide
    let numbered_slide = SlideContent::new("Numbered List")
        .with_bullet_style(BulletStyle::Number)
        .add_bullet("First step")
        .add_bullet("Second step")
        .add_bullet("Third step")
        .add_bullet("Fourth step");
    
    // Lettered list slide
    let lettered_slide = SlideContent::new("Lettered List")
        .add_lettered("Option A")
        .add_lettered("Option B")
        .add_lettered("Option C");
    
    // Roman numerals slide
    let roman_slide = SlideContent::new("Roman Numerals")
        .with_bullet_style(BulletStyle::RomanUpper)
        .add_bullet("Chapter I")
        .add_bullet("Chapter II")
        .add_bullet("Chapter III");
    
    // Mixed bullets with sub-bullets
    let mixed_slide = SlideContent::new("Mixed Bullets")
        .add_bullet("Main point")
        .add_sub_bullet("Supporting detail 1")
        .add_sub_bullet("Supporting detail 2")
        .add_bullet("Another main point")
        .add_sub_bullet("More details");
    
    // Custom bullet slide
    let custom_slide = SlideContent::new("Custom Bullets")
        .add_styled_bullet("Star bullet", BulletStyle::Custom('★'))
        .add_styled_bullet("Arrow bullet", BulletStyle::Custom('→'))
        .add_styled_bullet("Check bullet", BulletStyle::Custom('✓'))
        .add_styled_bullet("Diamond bullet", BulletStyle::Custom('◆'));
    
    let bullet_demo = pptx!("Bullet Styles Demo")
        .title_slide("Bullet Styles - Demonstrating various list formats")
        .content_slide(numbered_slide)
        .content_slide(lettered_slide)
        .content_slide(roman_slide)
        .content_slide(mixed_slide)
        .content_slide(custom_slide)
        .build()?;
    
    std::fs::write("examples/output/bullet_styles.pptx", bullet_demo)?;
    println!("  ✓ Created examples/output/bullet_styles.pptx");

    // 2. Text Formatting Demo
    println!("Creating text formatting demo...");
    
    let text_demo = pptx!("Text Formatting Demo")
        .title_slide("Text Formatting - Strikethrough, highlight, subscript, superscript")
        .slide("Text Styles", &[
            "Normal text for comparison",
            "This demonstrates various formatting options",
            "Use TextFormat for rich text styling",
        ])
        .slide("Font Size Presets", &[
            &format!("TITLE: {}pt - For main titles", font_sizes::TITLE),
            &format!("SUBTITLE: {}pt - For subtitles", font_sizes::SUBTITLE),
            &format!("HEADING: {}pt - For section headers", font_sizes::HEADING),
            &format!("BODY: {}pt - For regular content", font_sizes::BODY),
            &format!("SMALL: {}pt - For smaller text", font_sizes::SMALL),
            &format!("CAPTION: {}pt - For captions", font_sizes::CAPTION),
        ])
        .slide("Text Effects", &[
            "Strikethrough: For deleted text",
            "Highlight: For emphasized text",
            "Subscript: H₂O style formatting",
            "Superscript: x² style formatting",
        ])
        .build()?;
    
    std::fs::write("examples/output/text_formatting.pptx", text_demo)?;
    println!("  ✓ Created examples/output/text_formatting.pptx");

    // 3. Image from Base64 Demo
    println!("Creating image demo...");
    
    // 1x1 red PNG pixel in base64
    let red_pixel_base64 = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8DwHwAFBQIAX8jx0gAAAABJRU5ErkJggg==";
    
    // Create image from base64
    let img = ImageBuilder::from_base64(red_pixel_base64, inches(2.0), inches(2.0), "PNG")
        .position(inches(4.0), inches(3.0))
        .build();
    
    let image_slide = SlideContent::new("Image from Base64")
        .add_bullet("Images can be loaded from base64 encoded data")
        .add_bullet("Useful for embedding images without file access")
        .add_bullet("Supports PNG, JPEG, GIF formats")
        .add_image(img);
    
    let image_demo = pptx!("Image Features Demo")
        .title_slide("Image Features - Loading images from various sources")
        .content_slide(image_slide)
        .slide("Image Sources", &[
            "Image::new(filename) - From file path",
            "Image::from_base64(data) - From base64 string",
            "Image::from_bytes(data) - From raw bytes",
            "ImageBuilder for fluent API",
        ])
        .build()?;
    
    std::fs::write("examples/output/image_features.pptx", image_demo)?;
    println!("  ✓ Created examples/output/image_features.pptx");

    // 4. Theme Colors Demo
    println!("Creating themes demo...");
    
    let all_themes = themes::all();
    let theme_info: Vec<String> = all_themes.iter().map(|t| {
        format!("{}: Primary={}, Accent={}", t.name, t.primary, t.accent)
    }).collect();
    
    let themes_demo = pptx!("Theme Colors Demo")
        .title_slide("Theme Colors - Predefined color palettes")
        .slide("Available Themes", &theme_info.iter().map(|s| s.as_str()).collect::<Vec<_>>())
        .slide("Color Constants", &[
            &format!("Material Red: {}", colors::MATERIAL_RED),
            &format!("Material Blue: {}", colors::MATERIAL_BLUE),
            &format!("Material Green: {}", colors::MATERIAL_GREEN),
            &format!("Carbon Blue 60: {}", colors::CARBON_BLUE_60),
            &format!("Carbon Gray 100: {}", colors::CARBON_GRAY_100),
        ])
        .build()?;
    
    std::fs::write("examples/output/themes_demo.pptx", themes_demo)?;
    println!("  ✓ Created examples/output/themes_demo.pptx");

    // 5. Complete Feature Showcase
    println!("Creating complete feature showcase...");
    
    let showcase = pptx!("ppt-rs v0.2.1 Features")
        .title_slide("New Features in ppt-rs v0.2.1")
        .slide("Bullet Formatting", &[
            "BulletStyle::Number - 1, 2, 3...",
            "BulletStyle::LetterLower/Upper - a, b, c / A, B, C",
            "BulletStyle::RomanLower/Upper - i, ii, iii / I, II, III",
            "BulletStyle::Custom(char) - Any custom character",
            "Sub-bullets with indentation",
        ])
        .slide("Text Enhancements", &[
            "TextFormat::strikethrough() - Strike through text",
            "TextFormat::highlight(color) - Background highlight",
            "TextFormat::subscript() - H₂O style",
            "TextFormat::superscript() - x² style",
            "font_sizes module with presets",
        ])
        .slide("Image Loading", &[
            "Image::from_base64() - Base64 encoded images",
            "Image::from_bytes() - Raw byte arrays",
            "ImageSource enum for flexible handling",
            "Built-in base64 decoder",
        ])
        .slide("Templates", &[
            "templates::business_proposal()",
            "templates::status_report()",
            "templates::training_material()",
            "templates::technical_doc()",
            "templates::simple()",
        ])
        .slide("Themes & Colors", &[
            "themes::CORPORATE, MODERN, VIBRANT, DARK",
            "themes::NATURE, TECH, CARBON",
            "colors module with Material Design colors",
            "colors module with IBM Carbon colors",
        ])
        .build()?;
    
    std::fs::write("examples/output/feature_showcase.pptx", showcase)?;
    println!("  ✓ Created examples/output/feature_showcase.pptx");

    println!("\n✅ All demos created successfully!");
    println!("   Check examples/output/ for the generated files.");
    
    Ok(())
}

examples/comprehensive_demo.rs (line 926)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    println!("╔══════════════════════════════════════════════════════════════╗");
    println!("║       PPTX-RS Element Showcase - Complete Coverage           ║");
    println!("╚══════════════════════════════════════════════════════════════╝\n");

    let mut slides = Vec::new();

    // =========================================================================
    // SLIDE 1: CenteredTitle Layout + Title Formatting
    // =========================================================================
    println!("📐 Slide 1: CenteredTitle Layout + Title Formatting");
    slides.push(
        SlideContent::new("PPTX-RS Element Showcase")
            .layout(SlideLayout::CenteredTitle)
            .title_size(54)
            .title_bold(true)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 2: TitleOnly Layout
    // =========================================================================
    println!("📐 Slide 2: TitleOnly Layout");
    slides.push(
        SlideContent::new("Section: Slide Layouts")
            .layout(SlideLayout::TitleOnly)
            .title_size(48)
            .title_bold(true)
            .title_color("C0504D")
    );

    // =========================================================================
    // SLIDE 3: TitleAndContent Layout + All Text Formatting
    // =========================================================================
    println!("📝 Slide 3: TitleAndContent + Text Formatting");
    slides.push(
        SlideContent::new("Text Formatting Options")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .title_italic(true)
            .title_underline(true)
            .title_size(44)
            .add_bullet("Normal text (default)")
            .add_bullet("Bold content text")
            .add_bullet("Italic content text")
            .add_bullet("Underlined content")
            .add_bullet("Custom font size (28pt)")
            .add_bullet("Custom color (#4F81BD)")
            .content_bold(true)
            .content_italic(true)
            .content_underline(true)
            .content_size(28)
            .content_color("4F81BD")
    );

    // =========================================================================
    // SLIDE 4: TitleAndBigContent Layout
    // =========================================================================
    println!("📐 Slide 4: TitleAndBigContent Layout");
    slides.push(
        SlideContent::new("Key Highlights")
            .layout(SlideLayout::TitleAndBigContent)
            .title_color("1F497D")
            .add_bullet("Large content area for emphasis")
            .add_bullet("Perfect for key messages")
            .add_bullet("Smaller title, bigger content")
            .content_bold(true)
            .content_size(32)
    );

    // =========================================================================
    // SLIDE 5: TwoColumn Layout
    // =========================================================================
    println!("📐 Slide 5: TwoColumn Layout");
    slides.push(
        SlideContent::new("Two Column Comparison")
            .layout(SlideLayout::TwoColumn)
            .title_color("1F497D")
            .add_bullet("Left Column Item 1")
            .add_bullet("Left Column Item 2")
            .add_bullet("Left Column Item 3")
            .add_bullet("Right Column Item 1")
            .add_bullet("Right Column Item 2")
            .add_bullet("Right Column Item 3")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 6: Blank Layout
    // =========================================================================
    println!("📐 Slide 6: Blank Layout");
    slides.push(
        SlideContent::new("")
            .layout(SlideLayout::Blank)
    );

    // =========================================================================
    // SLIDE 7: Table with All Cell Styling Options
    // =========================================================================
    println!("📊 Slide 7: Table with Cell Styling");
    let styled_table = TableBuilder::new(vec![1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Header 1").bold().background_color("1F497D"),
            TableCell::new("Header 2").bold().background_color("4F81BD"),
            TableCell::new("Header 3").bold().background_color("8064A2"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Bold Cell").bold(),
            TableCell::new("Normal Cell"),
            TableCell::new("Colored").background_color("9BBB59"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Red BG").background_color("C0504D"),
            TableCell::new("Green BG").background_color("9BBB59"),
            TableCell::new("Blue BG").background_color("4F81BD"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Row 3 Col 1"),
            TableCell::new("Row 3 Col 2"),
            TableCell::new("Row 3 Col 3").bold().background_color("F79646"),
        ]))
        .position(500000, 1800000)
        .build();
    
    slides.push(
        SlideContent::new("Table with Cell Styling")
            .table(styled_table)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 8: Charts (Bar, Line, Pie)
    // =========================================================================
    println!("📈 Slide 8: Chart Types");
    
    // Create chart data structures (for demonstration)
    let _bar_chart = ChartBuilder::new("Sales by Region", ChartType::Bar)
        .categories(vec!["North", "South", "East", "West"])
        .add_series(ChartSeries::new("2023", vec![100.0, 80.0, 120.0, 90.0]))
        .add_series(ChartSeries::new("2024", vec![120.0, 95.0, 140.0, 110.0]))
        .build();
    
    let _line_chart = ChartBuilder::new("Monthly Trend", ChartType::Line)
        .categories(vec!["Jan", "Feb", "Mar", "Apr", "May", "Jun"])
        .add_series(ChartSeries::new("Revenue", vec![10.0, 12.0, 15.0, 14.0, 18.0, 22.0]))
        .build();
    
    let _pie_chart = ChartBuilder::new("Market Share", ChartType::Pie)
        .categories(vec!["Product A", "Product B", "Product C", "Others"])
        .add_series(ChartSeries::new("Share", vec![40.0, 30.0, 20.0, 10.0]))
        .build();
    
    slides.push(
        SlideContent::new("Chart Types: Bar, Line, Pie")
            .with_chart()
            .title_color("1F497D")
            .add_bullet("Bar Chart: Compare categories")
            .add_bullet("Line Chart: Show trends over time")
            .add_bullet("Pie Chart: Show proportions")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 9: Shapes with Different Fills
    // =========================================================================
    println!("🔷 Slide 9: Shapes with Fills");
    
    let rect = Shape::new(ShapeType::Rectangle, 500000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("4F81BD"))
        .with_text("Rectangle");
    
    let ellipse = Shape::new(ShapeType::Ellipse, 3000000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("9BBB59"))
        .with_text("Ellipse");
    
    let rounded = Shape::new(ShapeType::RoundedRectangle, 5500000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("C0504D"))
        .with_text("Rounded");
    
    let triangle = Shape::new(ShapeType::Triangle, 1500000, 3000000, 1500000, 1200000)
        .with_fill(ShapeFill::new("8064A2"))
        .with_text("Triangle");
    
    let diamond = Shape::new(ShapeType::Diamond, 4000000, 3000000, 1500000, 1200000)
        .with_fill(ShapeFill::new("F79646"))
        .with_text("Diamond");
    
    slides.push(
        SlideContent::new("Shape Types with Color Fills")
            .add_shape(rect)
            .add_shape(ellipse)
            .add_shape(rounded)
            .add_shape(triangle)
            .add_shape(diamond)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 10: Gradient Fills (NEW)
    // =========================================================================
    println!("🌈 Slide 10: Gradient Fills");
    
    // Horizontal gradient
    let gradient_h = Shape::new(ShapeType::Rectangle, 500000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("1565C0", "42A5F5", GradientDirection::Horizontal))
        .with_text("Horizontal");
    
    // Vertical gradient
    let gradient_v = Shape::new(ShapeType::Rectangle, 3200000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("2E7D32", "81C784", GradientDirection::Vertical))
        .with_text("Vertical");
    
    // Diagonal gradient
    let gradient_d = Shape::new(ShapeType::RoundedRectangle, 5900000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("C62828", "EF9A9A", GradientDirection::DiagonalDown))
        .with_text("Diagonal");
    
    // Three-color gradient
    let gradient_3 = Shape::new(ShapeType::Ellipse, 1800000, 3200000, 2500000, 1200000)
        .with_gradient(GradientFill::three_color("FF6F00", "FFC107", "FFEB3B", GradientDirection::Horizontal))
        .with_text("3-Color");
    
    // Custom angle gradient
    let gradient_angle = Shape::new(ShapeType::RoundedRectangle, 4800000, 3200000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("7B1FA2", "E1BEE7", GradientDirection::Angle(135)))
        .with_text("135° Angle");
    
    slides.push(
        SlideContent::new("Gradient Fills - Multiple Directions")
            .add_shape(gradient_h)
            .add_shape(gradient_v)
            .add_shape(gradient_d)
            .add_shape(gradient_3)
            .add_shape(gradient_angle)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 11: Transparency (NEW)
    // =========================================================================
    println!("👻 Slide 11: Transparency Effects");
    
    // Base shape (fully opaque)
    let base = Shape::new(ShapeType::Rectangle, 1000000, 1800000, 3000000, 2000000)
        .with_fill(ShapeFill::new("1565C0"))
        .with_text("Base (100%)");
    
    // 25% transparent overlay
    let trans_25 = Shape::new(ShapeType::Rectangle, 2000000, 2200000, 2500000, 1500000)
        .with_fill(ShapeFill::new("F44336").with_transparency(25))
        .with_line(ShapeLine::new("B71C1C", 25400))
        .with_text("25% Transparent");
    
    // 50% transparent overlay
    let trans_50 = Shape::new(ShapeType::Ellipse, 4500000, 1800000, 2500000, 2000000)
        .with_fill(ShapeFill::new("4CAF50").with_transparency(50))
        .with_line(ShapeLine::new("1B5E20", 25400))
        .with_text("50% Transparent");
    
    // 75% transparent overlay
    let trans_75 = Shape::new(ShapeType::RoundedRectangle, 5500000, 2500000, 2500000, 1500000)
        .with_fill(ShapeFill::new("FF9800").with_transparency(75))
        .with_line(ShapeLine::new("E65100", 25400))
        .with_text("75% Transparent");
    
    slides.push(
        SlideContent::new("Transparency Effects - Overlapping Shapes")
            .add_shape(base)
            .add_shape(trans_25)
            .add_shape(trans_50)
            .add_shape(trans_75)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 12: Styled Connectors (NEW)
    // =========================================================================
    println!("🔗 Slide 12: Styled Connectors");
    
    // Create shapes to connect
    let box1 = Shape::new(ShapeType::RoundedRectangle, 500000, 1800000, 1800000, 800000)
        .with_id(100)
        .with_fill(ShapeFill::new("1565C0"))
        .with_text("Start");
    
    let box2 = Shape::new(ShapeType::RoundedRectangle, 3500000, 1800000, 1800000, 800000)
        .with_id(101)
        .with_fill(ShapeFill::new("2E7D32"))
        .with_text("Process");
    
    let box3 = Shape::new(ShapeType::RoundedRectangle, 6500000, 1800000, 1800000, 800000)
        .with_id(102)
        .with_fill(ShapeFill::new("C62828"))
        .with_text("End");
    
    // Straight connector with arrow
    let conn1 = Connector::straight(2300000, 2200000, 3500000, 2200000)
        .with_line(ConnectorLine::new("1565C0", 25400))
        .with_end_arrow(ArrowType::Triangle)
        .with_arrow_size(ArrowSize::Large);
    
    // Elbow connector with stealth arrow
    let conn2 = Connector::elbow(5300000, 2200000, 6500000, 2200000)
        .with_line(ConnectorLine::new("2E7D32", 38100).with_dash(LineDash::Dash))
        .with_end_arrow(ArrowType::Stealth)
        .with_arrow_size(ArrowSize::Medium);
    
    // Curved connector examples
    let box4 = Shape::new(ShapeType::Ellipse, 1000000, 3200000, 1500000, 800000)
        .with_id(103)
        .with_fill(ShapeFill::new("7B1FA2"))
        .with_text("A");
    
    let box5 = Shape::new(ShapeType::Ellipse, 4000000, 3200000, 1500000, 800000)
        .with_id(104)
        .with_fill(ShapeFill::new("00838F"))
        .with_text("B");
    
    let box6 = Shape::new(ShapeType::Ellipse, 7000000, 3200000, 1500000, 800000)
        .with_id(105)
        .with_fill(ShapeFill::new("EF6C00"))
        .with_text("C");
    
    // Curved connector with diamond arrow
    let conn3 = Connector::curved(2500000, 3600000, 4000000, 3600000)
        .with_line(ConnectorLine::new("7B1FA2", 19050).with_dash(LineDash::DashDot))
        .with_arrows(ArrowType::Oval, ArrowType::Diamond);
    
    // Dotted connector
    let conn4 = Connector::straight(5500000, 3600000, 7000000, 3600000)
        .with_line(ConnectorLine::new("00838F", 12700).with_dash(LineDash::Dot))
        .with_end_arrow(ArrowType::Open);
    
    slides.push(
        SlideContent::new("Styled Connectors - Types, Arrows, Dashes")
            .add_shape(box1)
            .add_shape(box2)
            .add_shape(box3)
            .add_shape(box4)
            .add_shape(box5)
            .add_shape(box6)
            .add_connector(conn1)
            .add_connector(conn2)
            .add_connector(conn3)
            .add_connector(conn4)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 13: Images
    // =========================================================================
    println!("🖼️  Slide 13: Image Placeholders");
    
    let img1 = Image::new("logo.png", 2500000, 1800000, "png")
        .position(500000, 1600000);
    let img2 = Image::new("photo.jpg", 2500000, 1800000, "jpg")
        .position(3500000, 1600000);
    let img3 = Image::new("diagram.png", 2000000, 1800000, "png")
        .position(6500000, 1600000);
    
    slides.push(
        SlideContent::new("Image Placeholders")
            .add_image(img1)
            .add_image(img2)
            .add_image(img3)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 11: Advanced Table with Borders & Alignment (NEW)
    // =========================================================================
    println!("📊 Slide 11: Advanced Table (borders, alignment, merged cells)");
    
    // Build advanced table using generator's TableBuilder with alignment
    let advanced_table = TableBuilder::new(vec![2000000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2024 Financial Report").bold().background_color("1F4E79").text_color("FFFFFF").align_center().font_size(14),
            TableCell::new("").background_color("1F4E79"),
            TableCell::new("").background_color("1F4E79"),
            TableCell::new("").background_color("1F4E79"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Category").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Revenue").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Expenses").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Profit").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Product Sales").text_color("000000").align_left(),
            TableCell::new("$1,250,000").text_color("2E7D32").align_right(),
            TableCell::new("$450,000").text_color("C62828").align_right(),
            TableCell::new("$800,000").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Services").text_color("000000").align_left(),
            TableCell::new("$890,000").text_color("2E7D32").align_right(),
            TableCell::new("$320,000").text_color("C62828").align_right(),
            TableCell::new("$570,000").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Total").bold().background_color("E7E6E6").text_color("000000").align_left(),
            TableCell::new("$2,140,000").bold().background_color("E7E6E6").text_color("000000").align_right(),
            TableCell::new("$770,000").bold().background_color("E7E6E6").text_color("000000").align_right(),
            TableCell::new("$1,370,000").bold().background_color("C6EFCE").text_color("006100").align_right(),
        ]))
        .position(300000, 1600000)
        .build();
    
    slides.push(
        SlideContent::new("Financial Report - Advanced Table")
            .table(advanced_table)
            .title_color("1F4E79")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 12: Comparison Matrix Table (NEW)
    // =========================================================================
    println!("📊 Slide 12: Comparison Matrix Table");
    
    let comparison_table = TableBuilder::new(vec![2000000, 1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Feature").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Basic").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Pro").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Enterprise").bold().background_color("4472C4").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Storage").text_color("000000"),
            TableCell::new("5 GB").text_color("000000"),
            TableCell::new("50 GB").text_color("000000"),
            TableCell::new("Unlimited").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Users").text_color("000000"),
            TableCell::new("1").text_color("000000"),
            TableCell::new("10").text_color("000000"),
            TableCell::new("Unlimited").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Support").text_color("000000"),
            TableCell::new("Email").text_color("000000"),
            TableCell::new("24/7 Chat").text_color("000000"),
            TableCell::new("Dedicated").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("API Access").text_color("000000"),
            TableCell::new("No").text_color("C62828"),
            TableCell::new("Yes").text_color("2E7D32"),
            TableCell::new("Yes + Priority").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Price/month").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$9").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$29").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$99").bold().background_color("F2F2F2").text_color("000000"),
        ]))
        .position(500000, 1600000)
        .build();
    
    slides.push(
        SlideContent::new("Pricing Comparison Matrix")
            .table(comparison_table)
            .title_color("4472C4")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 13: Process Flow with Shapes (NEW - SmartArt-like)
    // =========================================================================
    println!("🔷 Slide 13: Process Flow (SmartArt-style)");
    
    // Create process flow using shapes
    let step1 = Shape::new(ShapeType::RoundedRectangle, 300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("1. Research");
    let arrow1 = Shape::new(ShapeType::RightArrow, 1800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step2 = Shape::new(ShapeType::RoundedRectangle, 2300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("2. Design");
    let arrow2 = Shape::new(ShapeType::RightArrow, 3800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step3 = Shape::new(ShapeType::RoundedRectangle, 4300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("3. Develop");
    let arrow3 = Shape::new(ShapeType::RightArrow, 5800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step4 = Shape::new(ShapeType::RoundedRectangle, 6300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("5B9BD5"))
        .with_text("4. Deploy");
    
    slides.push(
        SlideContent::new("Development Process Flow")
            .add_shape(step1)
            .add_shape(arrow1)
            .add_shape(step2)
            .add_shape(arrow2)
            .add_shape(step3)
            .add_shape(arrow3)
            .add_shape(step4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 14: Organization Chart with Shapes (NEW)
    // =========================================================================
    println!("🔷 Slide 14: Organization Chart");
    
    // CEO at top
    let ceo = Shape::new(ShapeType::RoundedRectangle, 3500000, 1400000, 2000000, 600000)
        .with_fill(ShapeFill::new("1F4E79"))
        .with_text("CEO");
    
    // Vertical line from CEO
    let line1 = Shape::new(ShapeType::Rectangle, 4450000, 2000000, 100000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // Horizontal connector
    let hline = Shape::new(ShapeType::Rectangle, 1950000, 2400000, 5100000, 50000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // CTO, CFO, COO
    let cto = Shape::new(ShapeType::RoundedRectangle, 1000000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("CTO");
    let cfo = Shape::new(ShapeType::RoundedRectangle, 3600000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("CFO");
    let coo = Shape::new(ShapeType::RoundedRectangle, 6200000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("COO");
    
    // Vertical lines to departments
    let vline1 = Shape::new(ShapeType::Rectangle, 1850000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let vline2 = Shape::new(ShapeType::Rectangle, 4450000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let vline3 = Shape::new(ShapeType::Rectangle, 7050000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // Teams under CTO
    let eng = Shape::new(ShapeType::Rectangle, 500000, 3300000, 1200000, 400000)
        .with_fill(ShapeFill::new("BDD7EE"))
        .with_text("Engineering");
    let product = Shape::new(ShapeType::Rectangle, 1800000, 3300000, 1200000, 400000)
        .with_fill(ShapeFill::new("BDD7EE"))
        .with_text("Product");
    
    slides.push(
        SlideContent::new("Organization Structure")
            .add_shape(ceo)
            .add_shape(line1)
            .add_shape(hline)
            .add_shape(cto)
            .add_shape(cfo)
            .add_shape(coo)
            .add_shape(vline1)
            .add_shape(vline2)
            .add_shape(vline3)
            .add_shape(eng)
            .add_shape(product)
            .title_color("1F4E79")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 15: PDCA Cycle Diagram (NEW)
    // =========================================================================
    println!("🔷 Slide 15: PDCA Cycle Diagram");
    
    // Four quadrants for PDCA
    let plan = Shape::new(ShapeType::RoundedRectangle, 1500000, 1600000, 2500000, 1500000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("PLAN\n\nDefine goals\nand strategy");
    let do_box = Shape::new(ShapeType::RoundedRectangle, 4500000, 1600000, 2500000, 1500000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("DO\n\nImplement\nthe plan");
    let check = Shape::new(ShapeType::RoundedRectangle, 4500000, 3300000, 2500000, 1500000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("CHECK\n\nMeasure\nresults");
    let act = Shape::new(ShapeType::RoundedRectangle, 1500000, 3300000, 2500000, 1500000)
        .with_fill(ShapeFill::new("FFC000"))
        .with_text("ACT\n\nAdjust and\nimprove");
    
    // Arrows between quadrants
    let arr1 = Shape::new(ShapeType::RightArrow, 4100000, 2100000, 300000, 300000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr2 = Shape::new(ShapeType::DownArrow, 5600000, 3200000, 300000, 200000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr3 = Shape::new(ShapeType::LeftArrow, 4100000, 3800000, 300000, 300000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr4 = Shape::new(ShapeType::UpArrow, 2600000, 3200000, 300000, 200000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    slides.push(
        SlideContent::new("PDCA Continuous Improvement Cycle")
            .add_shape(plan)
            .add_shape(do_box)
            .add_shape(check)
            .add_shape(act)
            .add_shape(arr1)
            .add_shape(arr2)
            .add_shape(arr3)
            .add_shape(arr4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 16: Pyramid Diagram (Maslow's Hierarchy) (NEW)
    // =========================================================================
    println!("🔷 Slide 16: Pyramid Diagram");
    
    // Build pyramid from bottom to top
    let level5 = Shape::new(ShapeType::Trapezoid, 500000, 4000000, 8000000, 600000)
        .with_fill(ShapeFill::new("C00000"))
        .with_text("Physiological Needs - Food, Water, Shelter");
    let level4 = Shape::new(ShapeType::Trapezoid, 1000000, 3400000, 7000000, 600000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Safety Needs - Security, Stability");
    let level3 = Shape::new(ShapeType::Trapezoid, 1500000, 2800000, 6000000, 600000)
        .with_fill(ShapeFill::new("FFC000"))
        .with_text("Love & Belonging - Relationships");
    let level2 = Shape::new(ShapeType::Trapezoid, 2000000, 2200000, 5000000, 600000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Esteem - Achievement, Respect");
    let level1 = Shape::new(ShapeType::Triangle, 2500000, 1500000, 4000000, 700000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Self-Actualization");
    
    slides.push(
        SlideContent::new("Maslow's Hierarchy of Needs")
            .add_shape(level5)
            .add_shape(level4)
            .add_shape(level3)
            .add_shape(level2)
            .add_shape(level1)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 17: Venn Diagram (NEW)
    // =========================================================================
    println!("🔷 Slide 17: Venn Diagram");
    
    // Three overlapping circles
    let circle1 = Shape::new(ShapeType::Ellipse, 1500000, 1800000, 3000000, 3000000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Skills");
    let circle2 = Shape::new(ShapeType::Ellipse, 3500000, 1800000, 3000000, 3000000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Passion");
    let circle3 = Shape::new(ShapeType::Ellipse, 2500000, 3200000, 3000000, 3000000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Market Need");
    
    // Center label
    let center = Shape::new(ShapeType::Ellipse, 3200000, 2800000, 1600000, 800000)
        .with_fill(ShapeFill::new("FFFFFF"))
        .with_text("IKIGAI");
    
    slides.push(
        SlideContent::new("Finding Your Ikigai - Venn Diagram")
            .add_shape(circle1)
            .add_shape(circle2)
            .add_shape(circle3)
            .add_shape(center)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 18: Timeline/Roadmap (NEW)
    // =========================================================================
    println!("📊 Slide 18: Project Timeline");
    
    let timeline_table = TableBuilder::new(vec![1500000, 1500000, 1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q2 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q3 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q4 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q1 2025").bold().background_color("4472C4").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Research\n& Planning").background_color("BDD7EE").text_color("1F497D"),
            TableCell::new("Design\nPhase").background_color("BDD7EE").text_color("1F497D"),
            TableCell::new("Development\nSprint 1-3").background_color("C6EFCE").text_color("006100"),
            TableCell::new("Testing\n& QA").background_color("FCE4D6").text_color("C65911"),
            TableCell::new("Launch\n& Support").background_color("E2EFDA").text_color("375623"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("✓ Complete").bold().text_color("2E7D32"),
            TableCell::new("✓ Complete").bold().text_color("2E7D32"),
            TableCell::new("In Progress").text_color("ED7D31"),
            TableCell::new("Planned").text_color("7F7F7F"),
            TableCell::new("Planned").text_color("7F7F7F"),
        ]))
        .position(300000, 2000000)
        .build();
    
    slides.push(
        SlideContent::new("Project Roadmap 2024-2025")
            .table(timeline_table)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 19: Dashboard Summary (NEW)
    // =========================================================================
    println!("🔷 Slide 19: Dashboard with KPIs");
    
    // KPI boxes
    let kpi1 = Shape::new(ShapeType::RoundedRectangle, 300000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Revenue\n\n$2.14M\n+15% YoY");
    let kpi2 = Shape::new(ShapeType::RoundedRectangle, 2500000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Customers\n\n12,450\n+22% YoY");
    let kpi3 = Shape::new(ShapeType::RoundedRectangle, 4700000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("NPS Score\n\n72\n+8 pts");
    let kpi4 = Shape::new(ShapeType::RoundedRectangle, 6900000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("5B9BD5"))
        .with_text("Retention\n\n94%\n+3% YoY");
    
    // Status indicators
    let status1 = Shape::new(ShapeType::Ellipse, 1800000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    let status2 = Shape::new(ShapeType::Ellipse, 4000000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    let status3 = Shape::new(ShapeType::Ellipse, 6200000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("FFC000"));
    let status4 = Shape::new(ShapeType::Ellipse, 8400000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    
    slides.push(
        SlideContent::new("Executive Dashboard - Q1 2024")
            .add_shape(kpi1)
            .add_shape(kpi2)
            .add_shape(kpi3)
            .add_shape(kpi4)
            .add_shape(status1)
            .add_shape(status2)
            .add_shape(status3)
            .add_shape(status4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 20: Summary Slide (NEW)
    // =========================================================================
    println!("📝 Slide 20: Summary with Speaker Notes");
    
    slides.push(
        SlideContent::new("Summary & Next Steps")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Completed: Research, Design, Initial Development")
            .add_bullet("In Progress: Sprint 3 Development")
            .add_bullet("Next: QA Testing Phase (Q4 2024)")
            .add_bullet("Launch Target: Q1 2025")
            .add_bullet("Key Risks: Resource constraints, Timeline pressure")
            .content_size(24)
            .notes("Speaker Notes:\n\n1. Emphasize the progress made\n2. Highlight key achievements\n3. Address any concerns about timeline\n4. Open for Q&A")
    );

    // =========================================================================
    // SLIDE 21: Bullet Styles (NEW v0.2.1)
    // =========================================================================
    println!("🔢 Slide 21: Bullet Styles (NEW)");
    
    // Numbered list
    slides.push(
        SlideContent::new("Bullet Styles - Numbered List")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .with_bullet_style(BulletStyle::Number)
            .add_bullet("First numbered item")
            .add_bullet("Second numbered item")
            .add_bullet("Third numbered item")
            .add_bullet("Fourth numbered item")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 22: Lettered Lists (NEW v0.2.1)
    // =========================================================================
    println!("🔤 Slide 22: Lettered Lists (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Lettered Lists")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_lettered("Option A - First choice")
            .add_lettered("Option B - Second choice")
            .add_lettered("Option C - Third choice")
            .add_lettered("Option D - Fourth choice")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 23: Roman Numerals (NEW v0.2.1)
    // =========================================================================
    println!("🏛️ Slide 23: Roman Numerals (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Roman Numerals")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .with_bullet_style(BulletStyle::RomanUpper)
            .add_bullet("Chapter I - Introduction")
            .add_bullet("Chapter II - Background")
            .add_bullet("Chapter III - Methodology")
            .add_bullet("Chapter IV - Results")
            .add_bullet("Chapter V - Conclusion")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 24: Custom Bullets (NEW v0.2.1)
    // =========================================================================
    println!("⭐ Slide 24: Custom Bullets (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Custom Characters")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_styled_bullet("Star bullet point", BulletStyle::Custom('★'))
            .add_styled_bullet("Arrow bullet point", BulletStyle::Custom('→'))
            .add_styled_bullet("Check bullet point", BulletStyle::Custom('✓'))
            .add_styled_bullet("Diamond bullet point", BulletStyle::Custom('◆'))
            .add_styled_bullet("Heart bullet point", BulletStyle::Custom('♥'))
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 25: Sub-bullets / Hierarchy (NEW v0.2.1)
    // =========================================================================
    println!("📊 Slide 25: Sub-bullets Hierarchy (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Hierarchical Lists")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Main Topic 1")
            .add_sub_bullet("Supporting detail A")
            .add_sub_bullet("Supporting detail B")
            .add_bullet("Main Topic 2")
            .add_sub_bullet("Supporting detail C")
            .add_sub_bullet("Supporting detail D")
            .add_bullet("Main Topic 3")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 26: Text Enhancements (NEW v0.2.1)
    // =========================================================================
    println!("✏️ Slide 26: Text Enhancements (NEW)");
    
    // Use BulletPoint with formatting
    let strikethrough_bullet = BulletPoint::new("Strikethrough: This text is crossed out").strikethrough();
    let highlight_bullet = BulletPoint::new("Highlight: Yellow background for emphasis").highlight("FFFF00");
    let subscript_bullet = BulletPoint::new("Subscript: H₂O - for chemical formulas").subscript();
    let superscript_bullet = BulletPoint::new("Superscript: x² - for math expressions").superscript();
    let bold_colored = BulletPoint::new("Combined: Bold + Red color").bold().color("FF0000");
    
    let mut text_enhancements_slide = SlideContent::new("Text Enhancements - New Formatting")
        .layout(SlideLayout::TitleAndContent)
        .title_color("1F497D")
        .title_bold(true)
        .content_size(24);
    text_enhancements_slide.bullets.push(strikethrough_bullet);
    text_enhancements_slide.bullets.push(highlight_bullet);
    text_enhancements_slide.bullets.push(subscript_bullet);
    text_enhancements_slide.bullets.push(superscript_bullet);
    text_enhancements_slide.bullets.push(bold_colored);
    
    slides.push(text_enhancements_slide);

    // =========================================================================
    // SLIDE 27: Font Size Presets (NEW v0.2.1)
    // =========================================================================
    println!("🔤 Slide 27: Font Size Presets (NEW)");
    
    // Demonstrate different font sizes per bullet
    let large_bullet = BulletPoint::new(&format!("LARGE: {}pt - Extra large text", font_sizes::LARGE)).font_size(font_sizes::LARGE);
    let heading_bullet = BulletPoint::new(&format!("HEADING: {}pt - Section headers", font_sizes::HEADING)).font_size(font_sizes::HEADING);
    let body_bullet = BulletPoint::new(&format!("BODY: {}pt - Regular content", font_sizes::BODY)).font_size(font_sizes::BODY);
    let small_bullet = BulletPoint::new(&format!("SMALL: {}pt - Smaller text", font_sizes::SMALL)).font_size(font_sizes::SMALL);
    let caption_bullet = BulletPoint::new(&format!("CAPTION: {}pt - Captions and notes", font_sizes::CAPTION)).font_size(font_sizes::CAPTION);
    
    let mut font_size_slide = SlideContent::new("Font Size Presets - Each line different size")
        .layout(SlideLayout::TitleAndContent)
        .title_color("1F497D")
        .title_bold(true)
        .title_size(font_sizes::TITLE);
    font_size_slide.bullets.push(large_bullet);
    font_size_slide.bullets.push(heading_bullet);
    font_size_slide.bullets.push(body_bullet);
    font_size_slide.bullets.push(small_bullet);
    font_size_slide.bullets.push(caption_bullet);
    
    slides.push(font_size_slide);

    // =========================================================================
    // SLIDE 28: Theme Colors (NEW v0.2.1)
    // =========================================================================
    println!("🎨 Slide 28: Theme Colors (NEW)");
    
    // Create shapes with theme colors
    let corporate_shape = Shape::new(ShapeType::Rectangle, 500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::CORPORATE.primary))
        .with_text("Corporate");
    
    let modern_shape = Shape::new(ShapeType::Rectangle, 2500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::MODERN.primary))
        .with_text("Modern");
    
    let vibrant_shape = Shape::new(ShapeType::Rectangle, 4500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::VIBRANT.primary))
        .with_text("Vibrant");
    
    let dark_shape = Shape::new(ShapeType::Rectangle, 6500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::DARK.primary))
        .with_text("Dark");
    
    let nature_shape = Shape::new(ShapeType::Rectangle, 500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::NATURE.primary))
        .with_text("Nature");
    
    let tech_shape = Shape::new(ShapeType::Rectangle, 2500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::TECH.primary))
        .with_text("Tech");
    
    let carbon_shape = Shape::new(ShapeType::Rectangle, 4500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::CARBON.primary))
        .with_text("Carbon");
    
    slides.push(
        SlideContent::new("Theme Color Palettes")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_shape(corporate_shape)
            .add_shape(modern_shape)
            .add_shape(vibrant_shape)
            .add_shape(dark_shape)
            .add_shape(nature_shape)
            .add_shape(tech_shape)
            .add_shape(carbon_shape)
    );

    // =========================================================================
    // SLIDE 29: Material & Carbon Design Colors (NEW v0.2.1)
    // =========================================================================
    println!("🌈 Slide 29: Material & Carbon Colors (NEW)");
    
    // Material Design colors
    let material_red = Shape::new(ShapeType::Rectangle, 500000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_RED))
        .with_text("M-Red");
    
    let material_blue = Shape::new(ShapeType::Rectangle, 1900000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_BLUE))
        .with_text("M-Blue");
    
    let material_green = Shape::new(ShapeType::Rectangle, 3300000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_GREEN))
        .with_text("M-Green");
    
    let material_orange = Shape::new(ShapeType::Rectangle, 4700000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_ORANGE))
        .with_text("M-Orange");
    
    let material_purple = Shape::new(ShapeType::Rectangle, 6100000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_PURPLE))
        .with_text("M-Purple");
    
    // Carbon Design colors
    let carbon_blue = Shape::new(ShapeType::Rectangle, 500000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_BLUE_60))
        .with_text("C-Blue");
    
    let carbon_green = Shape::new(ShapeType::Rectangle, 1900000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_GREEN_50))
        .with_text("C-Green");
    
    let carbon_red = Shape::new(ShapeType::Rectangle, 3300000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_RED_60))
        .with_text("C-Red");
    
    let carbon_purple = Shape::new(ShapeType::Rectangle, 4700000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_PURPLE_60))
        .with_text("C-Purple");
    
    let carbon_gray = Shape::new(ShapeType::Rectangle, 6100000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_GRAY_100))
        .with_text("C-Gray");
    
    slides.push(
        SlideContent::new("Material & Carbon Design Colors")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_shape(material_red)
            .add_shape(material_blue)
            .add_shape(material_green)
            .add_shape(material_orange)
            .add_shape(material_purple)
            .add_shape(carbon_blue)
            .add_shape(carbon_green)
            .add_shape(carbon_red)
            .add_shape(carbon_purple)
            .add_shape(carbon_gray)
    );

    // =========================================================================
    // SLIDE 30: Image from Base64 (NEW v0.2.1)
    // =========================================================================
    println!("🖼️ Slide 30: Image from Base64 (NEW)");
    
    // 1x1 red PNG pixel in base64
    let _red_pixel_base64 = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8DwHwAFBQIAX8jx0gAAAABJRU5ErkJggg==";
    
    // Create image from base64 (demonstrating the API)
    let _base64_image = ImageBuilder::from_base64(_red_pixel_base64, 914400, 914400, "PNG")
        .position(4000000, 2500000)
        .build();
    
    slides.push(
        SlideContent::new("Image Loading - New Methods")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Image::new(path) - Load from file path")
            .add_bullet("Image::from_base64(data) - Load from base64 string")
            .add_bullet("Image::from_bytes(data) - Load from raw bytes")
            .add_bullet("ImageBuilder for fluent API configuration")
            .add_bullet("Built-in base64 decoder (no external deps)")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 31: Feature Summary (NEW v0.2.1)
    // =========================================================================
    println!("📋 Slide 31: v0.2.1 Feature Summary (NEW)");
    
    slides.push(
        SlideContent::new("New Features in v0.2.1")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_numbered("BulletStyle: Number, Letter, Roman, Custom")
            .add_numbered("TextFormat: Strikethrough, Highlight")
            .add_numbered("TextFormat: Subscript, Superscript")
            .add_numbered("Font size presets in prelude")
            .add_numbered("Image::from_base64 and from_bytes")
            .add_numbered("Theme color palettes (7 themes)")
            .add_numbered("Material & Carbon Design colors")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 32: Slide Show Settings - Comparison Table (REAL: embedded in presProps.xml)
    // =========================================================================
    println!("🎬 Slide 34: Slide Show Settings (Visual)");

    let show_speaker = SlideShowSettings::new().pen_color(PenColor::red());
    let show_kiosk = SlideShowSettings::kiosk();
    let _show_range = SlideShowSettings::new()
        .show_type(ShowType::Browsed)
        .slide_range(SlideRange::Range { start: 1, end: 10 })
        .without_animation(true);
    let _speaker_xml = show_speaker.to_xml();
    let _kiosk_xml = show_kiosk.to_xml();

    let show_table = TableBuilder::new(vec![2000000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Setting").bold().background_color("1F4E79").text_color("FFFFFF"),
            TableCell::new("Speaker").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Kiosk").bold().background_color("ED7D31").text_color("FFFFFF"),
            TableCell::new("Browsed").bold().background_color("70AD47").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Loop").bold().background_color("D6E4F0"),
            TableCell::new("No"), TableCell::new("Yes").bold().text_color("2E7D32"),
            TableCell::new("No"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Narration").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("No").text_color("C62828"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Animation").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("Yes"),
            TableCell::new("No").text_color("C62828"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Timings").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("Auto"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Slide Range").bold().background_color("D6E4F0"),
            TableCell::new("All"), TableCell::new("All"),
            TableCell::new("1-10"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Pen Color").bold().background_color("D6E4F0"),
            TableCell::new("Red").text_color("FF0000"),
            TableCell::new("Red").text_color("FF0000"),
            TableCell::new("Red").text_color("FF0000"),
        ]))
        .position(300000, 1600000)
        .build();

    // Mode icons
    let icon_speaker = Shape::new(ShapeType::RoundedRectangle, 300000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Speaker: Full control");
    let icon_kiosk = Shape::new(ShapeType::RoundedRectangle, 3100000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Kiosk: Auto-loop");
    let icon_browsed = Shape::new(ShapeType::RoundedRectangle, 5900000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Browsed: Scrollbar");

    slides.push(
        SlideContent::new("Slide Show Settings - Mode Comparison")
            .table(show_table)
            .add_shape(icon_speaker)
            .add_shape(icon_kiosk)
            .add_shape(icon_browsed)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 35: Print Settings - Visual Handout Grid
    // =========================================================================
    println!("🖨️  Slide 35: Print Settings & Handouts (Visual)");

    let print = PrintSettings::new()
        .print_what(PrintWhat::Handouts)
        .color_mode(PrintColorMode::Grayscale)
        .handout_layout(GenHandoutLayout::SlidesPerPage6)
        .frame_slides(true)
        .header("Q1 2025 Strategy Review")
        .footer("Confidential - Internal Use Only")
        .print_date(true)
        .print_page_numbers(true);
    let _prnpr_xml = print.to_prnpr_xml();
    let _handout_xml = print.to_handout_master_xml();

    // Visual: 6-slide handout grid (2 cols x 3 rows)
    let hdr = Shape::new(ShapeType::Rectangle, 300000, 1500000, 4200000, 300000)
        .with_fill(ShapeFill::new("E7E6E6"))
        .with_text("Q1 2025 Strategy Review");
    // Row 1
    let s1 = Shape::new(ShapeType::Rectangle, 400000, 2000000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 1");
    let s2 = Shape::new(ShapeType::Rectangle, 2500000, 2000000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 2");
    // Row 2
    let s3 = Shape::new(ShapeType::Rectangle, 400000, 3200000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 3");
    let s4 = Shape::new(ShapeType::Rectangle, 2500000, 3200000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 4");
    // Row 3
    let s5 = Shape::new(ShapeType::Rectangle, 400000, 4400000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 5");
    let s6 = Shape::new(ShapeType::Rectangle, 2500000, 4400000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 6");
    let ftr = Shape::new(ShapeType::Rectangle, 300000, 5600000, 4200000, 300000)
        .with_fill(ShapeFill::new("E7E6E6"))
        .with_text("Confidential - Internal Use Only");

    // Settings summary table on the right
    let print_table = TableBuilder::new(vec![1800000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Print Settings").bold().background_color("1F4E79").text_color("FFFFFF"),
            TableCell::new("").background_color("1F4E79"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Print What").bold().background_color("D6E4F0"),
            TableCell::new("Handouts"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Color Mode").bold().background_color("D6E4F0"),
            TableCell::new("Grayscale"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Layout").bold().background_color("D6E4F0"),
            TableCell::new("6 slides/page"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Frame Slides").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Date").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Page Numbers").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .position(5000000, 1800000)
        .build();

    slides.push(
        SlideContent::new("Print Handout - 6 Slides Per Page")
            .table(print_table)
            .add_shape(hdr)
            .add_shape(s1).add_shape(s2)
            .add_shape(s3).add_shape(s4)
            .add_shape(s5).add_shape(s6)
            .add_shape(ftr)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 36: Advanced Table Merging - Actual Merged Table
    // =========================================================================
    println!("📊 Slide 36: Advanced Table Merging (Visual)");

    // Use TableMergeMap to compute states, then build a visual table
    let mut merge_map = TableMergeMap::new(5, 4);
    merge_map.merge_cells(0, 0, 1, 4).unwrap(); // Title row spans all 4 cols
    merge_map.merge_cells(1, 0, 2, 1).unwrap(); // "Products" spans 2 rows
    merge_map.merge_cells(3, 0, 2, 1).unwrap(); // "Services" spans 2 rows

    // Show merge state labels
    let state_00 = merge_map.cell_state(0, 0); // Anchor gridSpan=4
    let state_01 = merge_map.cell_state(0, 1); // HMerge
    let state_10 = merge_map.cell_state(1, 0); // Anchor rowSpan=2
    let state_20 = merge_map.cell_state(2, 0); // VMerge
    println!("   ├── (0,0): {}", state_00.to_xml_attrs().trim());
    println!("   ├── (0,1): {}", state_01.to_xml_attrs().trim());
    println!("   ├── (1,0): {}", state_10.to_xml_attrs().trim());
    println!("   └── (2,0): {}", state_20.to_xml_attrs().trim());

    // Build the table with REAL merge attributes (gridSpan, rowSpan, hMerge, vMerge)
    let merge_table = TableBuilder::new(vec![1500000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2025 Revenue Report").bold().background_color("1F4E79").text_color("FFFFFF").grid_span(4),
            TableCell::new("").background_color("1F4E79").h_merge(),
            TableCell::new("").background_color("1F4E79").h_merge(),
            TableCell::new("").background_color("1F4E79").h_merge(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Products").bold().background_color("BDD7EE").text_color("1F497D").row_span(2),
            TableCell::new("Hardware").background_color("E2EFDA"),
            TableCell::new("$450,000").text_color("2E7D32").align_right(),
            TableCell::new("+12%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("").background_color("BDD7EE").v_merge(),
            TableCell::new("Software").background_color("E2EFDA"),
            TableCell::new("$680,000").text_color("2E7D32").align_right(),
            TableCell::new("+25%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Services").bold().background_color("FCE4D6").text_color("C65911").row_span(2),
            TableCell::new("Consulting").background_color("FFF2CC"),
            TableCell::new("$320,000").text_color("2E7D32").align_right(),
            TableCell::new("+8%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("").background_color("FCE4D6").v_merge(),
            TableCell::new("Support").background_color("FFF2CC"),
            TableCell::new("$190,000").text_color("2E7D32").align_right(),
            TableCell::new("+5%").bold().text_color("2E7D32").align_right(),
        ]))
        .position(300000, 1600000)
        .build();

    // Legend shapes
    let legend_anchor = Shape::new(ShapeType::RoundedRectangle, 300000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Anchor (gridSpan/rowSpan)");
    let legend_hmerge = Shape::new(ShapeType::RoundedRectangle, 2500000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("hMerge (col covered)");
    let legend_vmerge = Shape::new(ShapeType::RoundedRectangle, 4700000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("vMerge (row covered)");
    let legend_normal = Shape::new(ShapeType::RoundedRectangle, 6900000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"))
        .with_text("Normal (no merge)");

    slides.push(
        SlideContent::new("Advanced Table Merging - Merged Cells")
            .table(merge_table)
            .add_shape(legend_anchor)
            .add_shape(legend_hmerge)
            .add_shape(legend_vmerge)
            .add_shape(legend_normal)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // Build PresentationSettings with all advanced features
    // =========================================================================
    println!("\n⚙️  Building Presentation Settings...");

    // Slide show settings (embedded in presProps.xml as <p:showPr>)
    let show_settings = SlideShowSettings::new()
        .show_type(ShowType::Speaker)
        .pen_color(PenColor::red())
        .use_timings(true);
    println!("   ├── Slide Show: Speaker mode, red pen, timings enabled");
    println!("   │   └── XML: {} bytes", show_settings.to_xml().len());

    // Print settings (embedded in presProps.xml as <p:prnPr>)
    let print_settings = PrintSettings::new()
        .print_what(PrintWhat::Handouts)
        .color_mode(PrintColorMode::Grayscale)
        .handout_layout(GenHandoutLayout::SlidesPerPage6)
        .frame_slides(true)
        .header("Q1 2025 Strategy Review")
        .footer("Confidential - Internal Use Only")
        .print_date(true)
        .print_page_numbers(true);
    println!("   └── Print: Handouts, 6/page, grayscale, framed");
    println!("       └── XML: {} bytes", print_settings.to_prnpr_xml().len());

    let pres_settings = PresentationSettings::new()
        .slide_show(show_settings)
        .print(print_settings);
    println!("   All settings configured → presProps.xml");

    // =========================================================================
    // Generate PPTX with real integrated features
    // =========================================================================
    println!("\n📦 Generating PPTX with integrated features...");
    let pptx_data = create_pptx_with_settings(
        "PPTX-RS Element Showcase",
        slides.clone(),
        Some(pres_settings),
    )?;
    fs::write("comprehensive_demo.pptx", &pptx_data)?;
    println!("   ✓ Created comprehensive_demo.pptx ({} slides, {} bytes)", 
             slides.len(), pptx_data.len());

    // =========================================================================
    // Package Analysis - Demonstrate Reading
    // =========================================================================
    println!("\n📖 Package Analysis (Read Capability):");
    
    let package = Package::open("comprehensive_demo.pptx")?;
    let paths = package.part_paths();
    
    let slide_count = paths.iter()
        .filter(|p| p.starts_with("ppt/slides/slide") && p.ends_with(".xml"))
        .count();
    
    println!("   ├── Total parts: {}", package.part_count());
    println!("   ├── Slides: {}", slide_count);
    println!("   └── Package opened and analyzed successfully");

    // =========================================================================
    // NEW: Parts API Demonstration
    // =========================================================================
    println!("\n🧩 Parts API Demonstration:");
    
    // SlideLayoutPart - 11 layout types
    println!("   ┌── SlideLayoutPart (11 layout types):");
    let layouts = [
        LayoutType::Title,
        LayoutType::TitleAndContent,
        LayoutType::SectionHeader,
        LayoutType::TwoContent,
        LayoutType::Comparison,
        LayoutType::TitleOnly,
        LayoutType::Blank,
        LayoutType::ContentWithCaption,
        LayoutType::PictureWithCaption,
        LayoutType::TitleAndVerticalText,
        LayoutType::VerticalTitleAndText,
    ];
    for (i, layout_type) in layouts.iter().enumerate() {
        let layout = SlideLayoutPart::new(i + 1, *layout_type);
        if i < 3 {
            println!("   │   ├── {}: {} ({})", i + 1, layout_type.name(), layout.path());
        }
    }
    println!("   │   └── ... and {} more layout types", layouts.len() - 3);
    
    // SlideMasterPart
    println!("   ├── SlideMasterPart:");
    let mut master = SlideMasterPart::new(1);
    master.set_name("Custom Master");
    master.add_layout_rel_id("rId2");
    master.add_layout_rel_id("rId3");
    println!("   │   ├── Name: {}", master.name());
    println!("   │   ├── Path: {}", master.path());
    println!("   │   └── Layouts: {} linked", master.layout_rel_ids().len());
    
    // ThemePart - Colors and Fonts
    println!("   ├── ThemePart (colors & fonts):");
    let mut theme = ThemePart::new(1);
    theme.set_name("Corporate Theme");
    theme.set_major_font("Arial");
    theme.set_minor_font("Calibri");
    theme.set_color("accent1", "FF5733");
    theme.set_color("accent2", "33FF57");
    let theme_xml = theme.to_xml()?;
    println!("   │   ├── Name: {}", theme.name());
    println!("   │   ├── Major Font: Arial");
    println!("   │   ├── Minor Font: Calibri");
    println!("   │   └── XML size: {} bytes", theme_xml.len());
    
    // NotesSlidePart - Speaker notes
    println!("   ├── NotesSlidePart (speaker notes):");
    let notes = NotesSlidePart::with_text(1, "Remember to:\n- Introduce yourself\n- Explain the agenda\n- Ask for questions");
    let notes_xml = notes.to_xml()?;
    println!("   │   ├── Path: {}", notes.path());
    println!("   │   ├── Text: \"{}...\"", &notes.notes_text()[..20.min(notes.notes_text().len())]);
    println!("   │   └── XML size: {} bytes", notes_xml.len());
    
    // AppPropertiesPart - Application metadata
    println!("   ├── AppPropertiesPart (metadata):");
    let mut app_props = AppPropertiesPart::new();
    app_props.set_company("Acme Corporation");
    app_props.set_slides(slides.len() as u32);
    let app_xml = app_props.to_xml()?;
    println!("   │   ├── Company: Acme Corporation");
    println!("   │   ├── Slides: {}", slides.len());
    println!("   │   └── XML size: {} bytes", app_xml.len());
    
    // MediaPart - Video/Audio formats
    println!("   ├── MediaPart (10 media formats):");
    println!("   │   ├── Video: mp4, webm, avi, wmv, mov");
    println!("   │   ├── Audio: mp3, wav, wma, m4a, ogg");
    let sample_media = MediaPart::new(1, MediaFormat::Mp4, vec![0; 100]);
    println!("   │   └── Sample: {} ({})", sample_media.path(), sample_media.format().mime_type());
    
    // TablePart - Table with formatting
    println!("   ├── TablePart (cell formatting):");
    let table_part = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Header 1").bold().background("4472C4"),
            TableCellPart::new("Header 2").bold().background("4472C4"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Data 1").color("333333"),
            TableCellPart::new("Data 2").italic(),
        ]))
        .position(EMU_PER_INCH, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 6, EMU_PER_INCH * 2);
    let table_xml = table_part.to_slide_xml(10);
    println!("   │   ├── Rows: {}", table_part.rows.len());
    println!("   │   ├── Features: bold, italic, colors, backgrounds");
    println!("   │   └── XML size: {} bytes", table_xml.len());
    
    // ContentTypesPart
    println!("   └── ContentTypesPart:");
    let mut content_types = ContentTypesPart::new();
    content_types.add_presentation();
    content_types.add_slide(1);
    content_types.add_slide_layout(1);
    content_types.add_slide_master(1);
    content_types.add_theme(1);
    content_types.add_core_properties();
    content_types.add_app_properties();
    let ct_xml = content_types.to_xml()?;
    println!("       ├── Path: {}", content_types.path());
    println!("       └── XML size: {} bytes", ct_xml.len());

    // =========================================================================
    // NEW: Elements API Demonstration
    // =========================================================================
    println!("\n🎨 Elements API Demonstration:");
    
    // Color types
    println!("   ┌── Color Types:");
    let rgb = RgbColor::new(255, 87, 51);
    let rgb_hex = RgbColor::from_hex("#4472C4").unwrap();
    let scheme = SchemeColor::Accent1;
    let color = Color::rgb(100, 149, 237);
    println!("   │   ├── RgbColor::new(255, 87, 51) → {}", rgb.to_hex());
    println!("   │   ├── RgbColor::from_hex(\"#4472C4\") → {}", rgb_hex.to_hex());
    println!("   │   ├── SchemeColor::Accent1 → {}", scheme.as_str());
    println!("   │   └── Color::rgb(100, 149, 237) → XML: {}", color.to_xml().chars().take(30).collect::<String>());
    
    // Position and Size
    println!("   ├── Position & Size (EMU units):");
    let pos = Position::from_inches(1.0, 2.0);
    let size = Size::from_inches(4.0, 3.0);
    println!("   │   ├── Position::from_inches(1.0, 2.0) → x={}, y={}", pos.x, pos.y);
    println!("   │   ├── Size::from_inches(4.0, 3.0) → w={}, h={}", size.width, size.height);
    println!("   │   └── EMU_PER_INCH = {}", EMU_PER_INCH);
    
    // Transform
    println!("   └── Transform (position + size + rotation):");
    let transform = Transform::from_inches(1.0, 1.5, 3.0, 2.0).with_rotation(45.0);
    let transform_xml = transform.to_xml();
    println!("       ├── Transform::from_inches(1.0, 1.5, 3.0, 2.0)");
    println!("       ├── .with_rotation(45.0)");
    println!("       └── XML: {}...", &transform_xml[..50.min(transform_xml.len())]);

    // =========================================================================
    // NEW: Advanced Features Demonstration
    // =========================================================================
    println!("\n🚀 Advanced Features Demonstration:");

    // -------------------------------------------------------------------------
    // Complex Table Examples
    // -------------------------------------------------------------------------
    println!("   ┌── Complex Table Examples:");
    
    // Example 1: Financial Report Table
    println!("   │   ┌── Financial Report Table (5x4 with formatting):");
    let financial_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Q1 2024 Financial Summary")
                .col_span(4)
                .bold()
                .center()
                .background("1F4E79")
                .color("FFFFFF")
                .font_size(14)
                .font("Arial Black"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Category").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Revenue").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Expenses").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Profit").bold().center().background("2E75B6").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Product Sales").align(HorizontalAlign::Left),
            TableCellPart::new("$1,250,000").align(HorizontalAlign::Right).color("2E7D32"),
            TableCellPart::new("$450,000").align(HorizontalAlign::Right).color("C62828"),
            TableCellPart::new("$800,000").align(HorizontalAlign::Right).bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Services").align(HorizontalAlign::Left),
            TableCellPart::new("$890,000").align(HorizontalAlign::Right).color("2E7D32"),
            TableCellPart::new("$320,000").align(HorizontalAlign::Right).color("C62828"),
            TableCellPart::new("$570,000").align(HorizontalAlign::Right).bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Total").bold().background("E7E6E6"),
            TableCellPart::new("$2,140,000").bold().align(HorizontalAlign::Right).background("E7E6E6"),
            TableCellPart::new("$770,000").bold().align(HorizontalAlign::Right).background("E7E6E6"),
            TableCellPart::new("$1,370,000").bold().align(HorizontalAlign::Right).background("C6EFCE").color("006100"),
        ]))
        .position(EMU_PER_INCH / 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 8, EMU_PER_INCH * 3);
    let fin_xml = financial_table.to_slide_xml(100);
    println!("   │   │   ├── Merged header spanning 4 columns");
    println!("   │   │   ├── Color-coded values (green=positive, red=negative)");
    println!("   │   │   ├── Custom fonts and sizes");
    println!("   │   │   └── XML: {} bytes", fin_xml.len());

    // Example 2: Comparison Matrix
    println!("   │   ├── Comparison Matrix (features vs products):");
    let matrix_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Feature").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Basic").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Pro").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Enterprise").bold().center().background("4472C4").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Storage").align(HorizontalAlign::Left),
            TableCellPart::new("5 GB").center(),
            TableCellPart::new("50 GB").center(),
            TableCellPart::new("Unlimited").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Users").align(HorizontalAlign::Left),
            TableCellPart::new("1").center(),
            TableCellPart::new("10").center(),
            TableCellPart::new("Unlimited").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Support").align(HorizontalAlign::Left),
            TableCellPart::new("Email").center(),
            TableCellPart::new("24/7 Chat").center(),
            TableCellPart::new("Dedicated").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Price/mo").bold().background("F2F2F2"),
            TableCellPart::new("$9").center().bold().background("F2F2F2"),
            TableCellPart::new("$29").center().bold().background("F2F2F2"),
            TableCellPart::new("$99").center().bold().background("F2F2F2"),
        ]));
    println!("   │   │   └── 5x4 matrix with alternating styles");

    // Example 3: Schedule/Timeline Table
    println!("   │   └── Schedule Table (with row spans):");
    let schedule_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Time").bold().center().background("70AD47").color("FFFFFF"),
            TableCellPart::new("Monday").bold().center().background("70AD47").color("FFFFFF"),
            TableCellPart::new("Tuesday").bold().center().background("70AD47").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("9:00 AM").center().background("E2EFDA"),
            TableCellPart::new("Team Standup").center().row_span(2).valign(VerticalAlign::Middle).background("BDD7EE"),
            TableCellPart::new("Code Review").center(),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("10:00 AM").center().background("E2EFDA"),
            TableCellPart::merged(),
            TableCellPart::new("Sprint Planning").center().background("FCE4D6"),
        ]));
    println!("   │       └── Row spans for multi-hour events");

    // -------------------------------------------------------------------------
    // Complex Animation Sequences
    // -------------------------------------------------------------------------
    println!("   ├── Complex Animation Sequences:");
    
    // Sequence 1: Title entrance with staggered content
    println!("   │   ┌── Staggered Entrance Sequence:");
    let title_anim = Animation::new(2, AnimationEffect::Fade)
        .trigger(AnimationTrigger::OnClick)
        .duration(500);
    let content1 = Animation::new(3, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(200);
    let content2 = Animation::new(4, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(100);
    let content3 = Animation::new(5, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(100);
    let staggered = SlideAnimations::new()
        .add(title_anim)
        .add(content1)
        .add(content2)
        .add(content3)
        .transition(SlideTransition::new(TransitionEffect::Push).direction(AnimationDirection::Left).duration(750));
    let staggered_xml = staggered.to_timing_xml()?;
    println!("   │   │   ├── Title: Fade on click");
    println!("   │   │   ├── Content 1-3: FlyIn with 100ms stagger");
    println!("   │   │   ├── Transition: Push from left (750ms)");
    println!("   │   │   └── XML: {} bytes", staggered_xml.len());

    // Sequence 2: Emphasis and exit
    println!("   │   ├── Emphasis + Exit Sequence:");
    let emphasis = Animation::new(6, AnimationEffect::Pulse)
        .trigger(AnimationTrigger::OnClick)
        .duration(1000)
        .repeat(3);
    let exit = Animation::new(6, AnimationEffect::FadeOut)
        .trigger(AnimationTrigger::AfterPrevious)
        .duration(500);
    let emphasis_seq = SlideAnimations::new()
        .add(emphasis)
        .add(exit);
    println!("   │   │   ├── Pulse 3x on click, then fade out");
    println!("   │   │   └── Same shape, sequential effects");

    // Sequence 3: Motion path
    println!("   │   └── Motion Path Animation:");
    let motion = Animation::new(7, AnimationEffect::Lines)
        .trigger(AnimationTrigger::OnClick)
        .duration(2000);
    println!("   │       └── Custom path: Lines, Arcs, Turns, Loops");

    // -------------------------------------------------------------------------
    // SmartArt Combinations
    // -------------------------------------------------------------------------
    println!("   ├── SmartArt Layout Examples:");
    
    // Process flow
    println!("   │   ┌── Process Flow (5 steps):");
    let process = SmartArtPart::new(1, SmartArtLayout::BasicProcess)
        .add_items(vec!["Research", "Design", "Develop", "Test", "Deploy"])
        .position(EMU_PER_INCH / 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 8, EMU_PER_INCH * 2);
    println!("   │   │   └── {} nodes in horizontal flow", process.nodes().len());

    // Organization chart
    println!("   │   ├── Organization Chart:");
    let org = SmartArtPart::new(2, SmartArtLayout::OrgChart)
        .add_items(vec!["CEO", "CTO", "CFO", "VP Engineering", "VP Sales"]);
    println!("   │   │   └── Hierarchical structure with {} positions", org.nodes().len());

    // Cycle diagram
    println!("   │   ├── Cycle Diagram:");
    let cycle = SmartArtPart::new(3, SmartArtLayout::BasicCycle)
        .add_items(vec!["Plan", "Do", "Check", "Act"]);
    println!("   │   │   └── PDCA cycle with {} phases", cycle.nodes().len());

    // Venn diagram
    println!("   │   ├── Venn Diagram:");
    let venn = SmartArtPart::new(4, SmartArtLayout::BasicVenn)
        .add_items(vec!["Skills", "Passion", "Market Need"]);
    println!("   │   │   └── 3-circle Venn for Ikigai concept");

    // Pyramid
    println!("   │   └── Pyramid:");
    let pyramid = SmartArtPart::new(5, SmartArtLayout::BasicPyramid)
        .add_items(vec!["Self-Actualization", "Esteem", "Love/Belonging", "Safety", "Physiological"]);
    println!("   │       └── Maslow's hierarchy with {} levels", pyramid.nodes().len());

    // -------------------------------------------------------------------------
    // 3D Model Configurations
    // -------------------------------------------------------------------------
    println!("   ├── 3D Model Configurations:");
    
    // Product showcase
    println!("   │   ┌── Product Showcase:");
    let product_3d = Model3DPart::new(1, Model3DFormat::Glb, vec![0; 100])
        .camera(CameraPreset::IsometricTopUp)
        .rotation(0.0, 45.0, 0.0)
        .zoom(1.2)
        .position(EMU_PER_INCH * 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 4, EMU_PER_INCH * 4);
    println!("   │   │   ├── Camera: Isometric top-up view");
    println!("   │   │   ├── Rotation: 45° Y-axis for best angle");
    println!("   │   │   └── Zoom: 1.2x for detail");

    // Architectural model
    println!("   │   ├── Architectural Model:");
    let arch_3d = Model3DPart::new(2, Model3DFormat::Gltf, vec![0; 100])
        .camera(CameraPreset::Front)
        .rotation(15.0, -30.0, 0.0)
        .ambient_light("FFFFCC");
    println!("   │   │   ├── Camera: Front view with tilt");
    println!("   │   │   └── Ambient: Warm lighting (FFFFCC)");

    // Technical diagram
    println!("   │   └── Technical Diagram:");
    let tech_3d = Model3DPart::new(3, Model3DFormat::Obj, vec![0; 100])
        .camera(CameraPreset::IsometricOffAxis1Top)
        .rotation(0.0, 0.0, 0.0);
    println!("   │       └── Camera: Off-axis isometric for exploded view");

    // -------------------------------------------------------------------------
    // Theme + Master + Layout Combination
    // -------------------------------------------------------------------------
    println!("   ├── Theme + Master + Layout Integration:");
    
    // Corporate theme
    let mut corp_theme = ThemePart::new(1);
    corp_theme.set_name("Corporate Blue");
    corp_theme.set_major_font("Segoe UI");
    corp_theme.set_minor_font("Segoe UI Light");
    corp_theme.set_color("dk1", "000000");
    corp_theme.set_color("lt1", "FFFFFF");
    corp_theme.set_color("dk2", "1F497D");
    corp_theme.set_color("lt2", "EEECE1");
    corp_theme.set_color("accent1", "4472C4");
    corp_theme.set_color("accent2", "ED7D31");
    corp_theme.set_color("accent3", "A5A5A5");
    corp_theme.set_color("accent4", "FFC000");
    corp_theme.set_color("accent5", "5B9BD5");
    corp_theme.set_color("accent6", "70AD47");
    let theme_xml = corp_theme.to_xml()?;
    println!("   │   ├── Theme: Corporate Blue");
    println!("   │   │   ├── Fonts: Segoe UI / Segoe UI Light");
    println!("   │   │   ├── 12 color slots defined");
    println!("   │   │   └── XML: {} bytes", theme_xml.len());

    // Master with multiple layouts
    let mut corp_master = SlideMasterPart::new(1);
    corp_master.set_name("Corporate Master");
    corp_master.add_layout_rel_id("rId2"); // Title
    corp_master.add_layout_rel_id("rId3"); // Title + Content
    corp_master.add_layout_rel_id("rId4"); // Section Header
    corp_master.add_layout_rel_id("rId5"); // Two Content
    corp_master.add_layout_rel_id("rId6"); // Comparison
    corp_master.add_layout_rel_id("rId7"); // Title Only
    corp_master.add_layout_rel_id("rId8"); // Blank
    println!("   │   └── Master: {} with {} layouts linked", corp_master.name(), corp_master.layout_rel_ids().len());

    // -------------------------------------------------------------------------
    // VBA + Custom XML Integration
    // -------------------------------------------------------------------------
    println!("   ├── VBA + Custom XML Integration:");
    
    // VBA with multiple modules
    let vba_project = VbaProjectPart::new()
        .add_module(VbaModule::new("AutoRun", r#"
Sub Auto_Open()
    MsgBox "Welcome to the presentation!"
End Sub

Sub NavigateToSlide(slideNum As Integer)
    SlideShowWindows(1).View.GotoSlide slideNum
End Sub
"#))
        .add_module(VbaModule::new("DataHelpers", r#"
Function GetCustomData(key As String) As String
    ' Read from Custom XML part
    GetCustomData = ActivePresentation.CustomXMLParts(1).SelectSingleNode("//" & key).Text
End Function
"#))
        .add_module(VbaModule::class("SlideController", r#"
Private currentSlide As Integer

Public Sub NextSlide()
    currentSlide = currentSlide + 1
    NavigateToSlide currentSlide
End Sub
"#));
    println!("   │   ├── VBA Project:");
    println!("   │   │   ├── AutoRun: Auto_Open, NavigateToSlide");
    println!("   │   │   ├── DataHelpers: GetCustomData (reads Custom XML)");
    println!("   │   │   └── SlideController: Class for navigation");

    // Custom XML with structured data
    let app_config = CustomXmlPart::new(1, "presentationConfig")
        .namespace("http://company.com/pptx/config")
        .property("version", "2.1.0")
        .property("author", "Demo User")
        .property("department", "Engineering")
        .property("confidentiality", "Internal")
        .property("lastModified", "2024-01-15T10:30:00Z");
    let config_xml = app_config.to_xml()?;
    println!("   │   └── Custom XML:");
    println!("   │       ├── Namespace: http://company.com/pptx/config");
    println!("   │       ├── Properties: version, author, department, etc.");
    println!("   │       └── XML: {} bytes", config_xml.len());

    // -------------------------------------------------------------------------
    // Embedded Fonts with Variants
    // -------------------------------------------------------------------------
    println!("   ├── Embedded Font Collection:");
    let mut font_collection = EmbeddedFontCollection::new();
    font_collection.add("Corporate Sans", vec![0; 1000]);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::Bold);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::Italic);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::BoldItalic);
    font_collection.add("Code Mono", vec![0; 800]);
    let fonts_xml = font_collection.to_xml();
    println!("   │   ├── Corporate Sans: Regular, Bold, Italic, BoldItalic");
    println!("   │   ├── Code Mono: Regular");
    println!("   │   ├── Total: {} font files", font_collection.len());
    println!("   │   └── XML: {} bytes", fonts_xml.len());

    // -------------------------------------------------------------------------
    // Handout with Full Configuration
    // -------------------------------------------------------------------------
    println!("   └── Handout Master Configuration:");
    let handout = HandoutMasterPart::new()
        .layout(HandoutLayout::SlidesPerPage6)
        .header("Q1 2024 Strategy Review")
        .footer("Confidential - Internal Use Only");
    let handout_xml = handout.to_xml()?;
    println!("       ├── Layout: 6 slides per page");
    println!("       ├── Header: Q1 2024 Strategy Review");
    println!("       ├── Footer: Confidential - Internal Use Only");
    println!("       └── XML: {} bytes", handout_xml.len());

    // =========================================================================
    // Summary
    // =========================================================================
    println!("\n╔══════════════════════════════════════════════════════════════╗");
    println!("║                    Element Coverage Summary                   ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  LAYOUTS (6 types):                                          ║");
    println!("║    ✓ CenteredTitle    ✓ TitleOnly      ✓ TitleAndContent     ║");
    println!("║    ✓ TitleAndBigContent  ✓ TwoColumn   ✓ Blank               ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  TEXT FORMATTING:                                            ║");
    println!("║    ✓ Bold            ✓ Italic         ✓ Underline            ║");
    println!("║    ✓ Font Size       ✓ Font Color     ✓ Title/Content styles ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  TABLES:                                                     ║");
    println!("║    ✓ Multiple rows/columns  ✓ Bold cells  ✓ Background colors║");
    println!("║    ✓ Header styling         ✓ Position control               ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  CHARTS:                                                     ║");
    println!("║    ✓ Bar Chart       ✓ Line Chart     ✓ Pie Chart            ║");
    println!("║    ✓ Multiple series ✓ Categories                            ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  SHAPES:                                                     ║");
    println!("║    ✓ Rectangle       ✓ Ellipse        ✓ RoundedRectangle     ║");
    println!("║    ✓ Triangle        ✓ Diamond        ✓ Color fills          ║");
    println!("║    ✓ Gradient fills  ✓ Transparency   ✓ Text in shapes       ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  CONNECTORS (NEW):                                           ║");
    println!("║    ✓ Straight        ✓ Elbow          ✓ Curved               ║");
    println!("║    ✓ Arrow types     ✓ Dash styles    ✓ Line colors/widths   ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  IMAGES:                                                     ║");
    println!("║    ✓ Image placeholders  ✓ Position   ✓ Dimensions           ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  PACKAGE:                                                    ║");
    println!("║    ✓ Create PPTX     ✓ Read PPTX      ✓ Analyze contents     ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  PARTS API (NEW):                                            ║");
    println!("║    ✓ SlideLayoutPart (11 types)  ✓ SlideMasterPart           ║");
    println!("║    ✓ ThemePart (colors/fonts)    ✓ NotesSlidePart            ║");
    println!("║    ✓ AppPropertiesPart           ✓ MediaPart (10 formats)    ║");
    println!("║    ✓ TablePart (cell formatting) ✓ ContentTypesPart          ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  ELEMENTS API:                                               ║");
    println!("║    ✓ RgbColor        ✓ SchemeColor    ✓ Color enum           ║");
    println!("║    ✓ Position        ✓ Size           ✓ Transform            ║");
    println!("║    ✓ EMU conversions (inches, cm, mm, pt)                    ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  ADVANCED FEATURES (NEW):                                    ║");
    println!("║    ✓ Animation (50+ effects)  ✓ Transitions (27 types)       ║");
    println!("║    ✓ SmartArt (25 layouts)    ✓ 3D Models (GLB/GLTF/OBJ)     ║");
    println!("║    ✓ VBA Macros (.pptm)       ✓ Embedded Fonts               ║");
    println!("║    ✓ Custom XML               ✓ Handout Master               ║");
    println!("║    ✓ Table borders/alignment  ✓ Merged cells                 ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  Output: comprehensive_demo.pptx ({} slides, {} KB)         ║", 
             slides.len(), pptx_data.len() / 1024);
    println!("╚══════════════════════════════════════════════════════════════╝");

    Ok(())
}

pub fn with_bullet_style(self, style: BulletStyle) -> Self

Set default bullet style for this slide

Examples found in repository

examples/new_features_demo.rs (line 22)

fn main() -> std::result::Result<(), Box<dyn std::error::Error>> {
    // Create output directory
    std::fs::create_dir_all("examples/output")?;

    // 1. Bullet Styles Demo
    println!("Creating bullet styles demo...");
    
    // Numbered list slide
    let numbered_slide = SlideContent::new("Numbered List")
        .with_bullet_style(BulletStyle::Number)
        .add_bullet("First step")
        .add_bullet("Second step")
        .add_bullet("Third step")
        .add_bullet("Fourth step");
    
    // Lettered list slide
    let lettered_slide = SlideContent::new("Lettered List")
        .add_lettered("Option A")
        .add_lettered("Option B")
        .add_lettered("Option C");
    
    // Roman numerals slide
    let roman_slide = SlideContent::new("Roman Numerals")
        .with_bullet_style(BulletStyle::RomanUpper)
        .add_bullet("Chapter I")
        .add_bullet("Chapter II")
        .add_bullet("Chapter III");
    
    // Mixed bullets with sub-bullets
    let mixed_slide = SlideContent::new("Mixed Bullets")
        .add_bullet("Main point")
        .add_sub_bullet("Supporting detail 1")
        .add_sub_bullet("Supporting detail 2")
        .add_bullet("Another main point")
        .add_sub_bullet("More details");
    
    // Custom bullet slide
    let custom_slide = SlideContent::new("Custom Bullets")
        .add_styled_bullet("Star bullet", BulletStyle::Custom('★'))
        .add_styled_bullet("Arrow bullet", BulletStyle::Custom('→'))
        .add_styled_bullet("Check bullet", BulletStyle::Custom('✓'))
        .add_styled_bullet("Diamond bullet", BulletStyle::Custom('◆'));
    
    let bullet_demo = pptx!("Bullet Styles Demo")
        .title_slide("Bullet Styles - Demonstrating various list formats")
        .content_slide(numbered_slide)
        .content_slide(lettered_slide)
        .content_slide(roman_slide)
        .content_slide(mixed_slide)
        .content_slide(custom_slide)
        .build()?;
    
    std::fs::write("examples/output/bullet_styles.pptx", bullet_demo)?;
    println!("  ✓ Created examples/output/bullet_styles.pptx");

    // 2. Text Formatting Demo
    println!("Creating text formatting demo...");
    
    let text_demo = pptx!("Text Formatting Demo")
        .title_slide("Text Formatting - Strikethrough, highlight, subscript, superscript")
        .slide("Text Styles", &[
            "Normal text for comparison",
            "This demonstrates various formatting options",
            "Use TextFormat for rich text styling",
        ])
        .slide("Font Size Presets", &[
            &format!("TITLE: {}pt - For main titles", font_sizes::TITLE),
            &format!("SUBTITLE: {}pt - For subtitles", font_sizes::SUBTITLE),
            &format!("HEADING: {}pt - For section headers", font_sizes::HEADING),
            &format!("BODY: {}pt - For regular content", font_sizes::BODY),
            &format!("SMALL: {}pt - For smaller text", font_sizes::SMALL),
            &format!("CAPTION: {}pt - For captions", font_sizes::CAPTION),
        ])
        .slide("Text Effects", &[
            "Strikethrough: For deleted text",
            "Highlight: For emphasized text",
            "Subscript: H₂O style formatting",
            "Superscript: x² style formatting",
        ])
        .build()?;
    
    std::fs::write("examples/output/text_formatting.pptx", text_demo)?;
    println!("  ✓ Created examples/output/text_formatting.pptx");

    // 3. Image from Base64 Demo
    println!("Creating image demo...");
    
    // 1x1 red PNG pixel in base64
    let red_pixel_base64 = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8DwHwAFBQIAX8jx0gAAAABJRU5ErkJggg==";
    
    // Create image from base64
    let img = ImageBuilder::from_base64(red_pixel_base64, inches(2.0), inches(2.0), "PNG")
        .position(inches(4.0), inches(3.0))
        .build();
    
    let image_slide = SlideContent::new("Image from Base64")
        .add_bullet("Images can be loaded from base64 encoded data")
        .add_bullet("Useful for embedding images without file access")
        .add_bullet("Supports PNG, JPEG, GIF formats")
        .add_image(img);
    
    let image_demo = pptx!("Image Features Demo")
        .title_slide("Image Features - Loading images from various sources")
        .content_slide(image_slide)
        .slide("Image Sources", &[
            "Image::new(filename) - From file path",
            "Image::from_base64(data) - From base64 string",
            "Image::from_bytes(data) - From raw bytes",
            "ImageBuilder for fluent API",
        ])
        .build()?;
    
    std::fs::write("examples/output/image_features.pptx", image_demo)?;
    println!("  ✓ Created examples/output/image_features.pptx");

    // 4. Theme Colors Demo
    println!("Creating themes demo...");
    
    let all_themes = themes::all();
    let theme_info: Vec<String> = all_themes.iter().map(|t| {
        format!("{}: Primary={}, Accent={}", t.name, t.primary, t.accent)
    }).collect();
    
    let themes_demo = pptx!("Theme Colors Demo")
        .title_slide("Theme Colors - Predefined color palettes")
        .slide("Available Themes", &theme_info.iter().map(|s| s.as_str()).collect::<Vec<_>>())
        .slide("Color Constants", &[
            &format!("Material Red: {}", colors::MATERIAL_RED),
            &format!("Material Blue: {}", colors::MATERIAL_BLUE),
            &format!("Material Green: {}", colors::MATERIAL_GREEN),
            &format!("Carbon Blue 60: {}", colors::CARBON_BLUE_60),
            &format!("Carbon Gray 100: {}", colors::CARBON_GRAY_100),
        ])
        .build()?;
    
    std::fs::write("examples/output/themes_demo.pptx", themes_demo)?;
    println!("  ✓ Created examples/output/themes_demo.pptx");

    // 5. Complete Feature Showcase
    println!("Creating complete feature showcase...");
    
    let showcase = pptx!("ppt-rs v0.2.1 Features")
        .title_slide("New Features in ppt-rs v0.2.1")
        .slide("Bullet Formatting", &[
            "BulletStyle::Number - 1, 2, 3...",
            "BulletStyle::LetterLower/Upper - a, b, c / A, B, C",
            "BulletStyle::RomanLower/Upper - i, ii, iii / I, II, III",
            "BulletStyle::Custom(char) - Any custom character",
            "Sub-bullets with indentation",
        ])
        .slide("Text Enhancements", &[
            "TextFormat::strikethrough() - Strike through text",
            "TextFormat::highlight(color) - Background highlight",
            "TextFormat::subscript() - H₂O style",
            "TextFormat::superscript() - x² style",
            "font_sizes module with presets",
        ])
        .slide("Image Loading", &[
            "Image::from_base64() - Base64 encoded images",
            "Image::from_bytes() - Raw byte arrays",
            "ImageSource enum for flexible handling",
            "Built-in base64 decoder",
        ])
        .slide("Templates", &[
            "templates::business_proposal()",
            "templates::status_report()",
            "templates::training_material()",
            "templates::technical_doc()",
            "templates::simple()",
        ])
        .slide("Themes & Colors", &[
            "themes::CORPORATE, MODERN, VIBRANT, DARK",
            "themes::NATURE, TECH, CARBON",
            "colors module with Material Design colors",
            "colors module with IBM Carbon colors",
        ])
        .build()?;
    
    std::fs::write("examples/output/feature_showcase.pptx", showcase)?;
    println!("  ✓ Created examples/output/feature_showcase.pptx");

    println!("\n✅ All demos created successfully!");
    println!("   Check examples/output/ for the generated files.");
    
    Ok(())
}

examples/comprehensive_demo.rs (line 853)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    println!("╔══════════════════════════════════════════════════════════════╗");
    println!("║       PPTX-RS Element Showcase - Complete Coverage           ║");
    println!("╚══════════════════════════════════════════════════════════════╝\n");

    let mut slides = Vec::new();

    // =========================================================================
    // SLIDE 1: CenteredTitle Layout + Title Formatting
    // =========================================================================
    println!("📐 Slide 1: CenteredTitle Layout + Title Formatting");
    slides.push(
        SlideContent::new("PPTX-RS Element Showcase")
            .layout(SlideLayout::CenteredTitle)
            .title_size(54)
            .title_bold(true)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 2: TitleOnly Layout
    // =========================================================================
    println!("📐 Slide 2: TitleOnly Layout");
    slides.push(
        SlideContent::new("Section: Slide Layouts")
            .layout(SlideLayout::TitleOnly)
            .title_size(48)
            .title_bold(true)
            .title_color("C0504D")
    );

    // =========================================================================
    // SLIDE 3: TitleAndContent Layout + All Text Formatting
    // =========================================================================
    println!("📝 Slide 3: TitleAndContent + Text Formatting");
    slides.push(
        SlideContent::new("Text Formatting Options")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .title_italic(true)
            .title_underline(true)
            .title_size(44)
            .add_bullet("Normal text (default)")
            .add_bullet("Bold content text")
            .add_bullet("Italic content text")
            .add_bullet("Underlined content")
            .add_bullet("Custom font size (28pt)")
            .add_bullet("Custom color (#4F81BD)")
            .content_bold(true)
            .content_italic(true)
            .content_underline(true)
            .content_size(28)
            .content_color("4F81BD")
    );

    // =========================================================================
    // SLIDE 4: TitleAndBigContent Layout
    // =========================================================================
    println!("📐 Slide 4: TitleAndBigContent Layout");
    slides.push(
        SlideContent::new("Key Highlights")
            .layout(SlideLayout::TitleAndBigContent)
            .title_color("1F497D")
            .add_bullet("Large content area for emphasis")
            .add_bullet("Perfect for key messages")
            .add_bullet("Smaller title, bigger content")
            .content_bold(true)
            .content_size(32)
    );

    // =========================================================================
    // SLIDE 5: TwoColumn Layout
    // =========================================================================
    println!("📐 Slide 5: TwoColumn Layout");
    slides.push(
        SlideContent::new("Two Column Comparison")
            .layout(SlideLayout::TwoColumn)
            .title_color("1F497D")
            .add_bullet("Left Column Item 1")
            .add_bullet("Left Column Item 2")
            .add_bullet("Left Column Item 3")
            .add_bullet("Right Column Item 1")
            .add_bullet("Right Column Item 2")
            .add_bullet("Right Column Item 3")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 6: Blank Layout
    // =========================================================================
    println!("📐 Slide 6: Blank Layout");
    slides.push(
        SlideContent::new("")
            .layout(SlideLayout::Blank)
    );

    // =========================================================================
    // SLIDE 7: Table with All Cell Styling Options
    // =========================================================================
    println!("📊 Slide 7: Table with Cell Styling");
    let styled_table = TableBuilder::new(vec![1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Header 1").bold().background_color("1F497D"),
            TableCell::new("Header 2").bold().background_color("4F81BD"),
            TableCell::new("Header 3").bold().background_color("8064A2"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Bold Cell").bold(),
            TableCell::new("Normal Cell"),
            TableCell::new("Colored").background_color("9BBB59"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Red BG").background_color("C0504D"),
            TableCell::new("Green BG").background_color("9BBB59"),
            TableCell::new("Blue BG").background_color("4F81BD"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Row 3 Col 1"),
            TableCell::new("Row 3 Col 2"),
            TableCell::new("Row 3 Col 3").bold().background_color("F79646"),
        ]))
        .position(500000, 1800000)
        .build();
    
    slides.push(
        SlideContent::new("Table with Cell Styling")
            .table(styled_table)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 8: Charts (Bar, Line, Pie)
    // =========================================================================
    println!("📈 Slide 8: Chart Types");
    
    // Create chart data structures (for demonstration)
    let _bar_chart = ChartBuilder::new("Sales by Region", ChartType::Bar)
        .categories(vec!["North", "South", "East", "West"])
        .add_series(ChartSeries::new("2023", vec![100.0, 80.0, 120.0, 90.0]))
        .add_series(ChartSeries::new("2024", vec![120.0, 95.0, 140.0, 110.0]))
        .build();
    
    let _line_chart = ChartBuilder::new("Monthly Trend", ChartType::Line)
        .categories(vec!["Jan", "Feb", "Mar", "Apr", "May", "Jun"])
        .add_series(ChartSeries::new("Revenue", vec![10.0, 12.0, 15.0, 14.0, 18.0, 22.0]))
        .build();
    
    let _pie_chart = ChartBuilder::new("Market Share", ChartType::Pie)
        .categories(vec!["Product A", "Product B", "Product C", "Others"])
        .add_series(ChartSeries::new("Share", vec![40.0, 30.0, 20.0, 10.0]))
        .build();
    
    slides.push(
        SlideContent::new("Chart Types: Bar, Line, Pie")
            .with_chart()
            .title_color("1F497D")
            .add_bullet("Bar Chart: Compare categories")
            .add_bullet("Line Chart: Show trends over time")
            .add_bullet("Pie Chart: Show proportions")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 9: Shapes with Different Fills
    // =========================================================================
    println!("🔷 Slide 9: Shapes with Fills");
    
    let rect = Shape::new(ShapeType::Rectangle, 500000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("4F81BD"))
        .with_text("Rectangle");
    
    let ellipse = Shape::new(ShapeType::Ellipse, 3000000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("9BBB59"))
        .with_text("Ellipse");
    
    let rounded = Shape::new(ShapeType::RoundedRectangle, 5500000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("C0504D"))
        .with_text("Rounded");
    
    let triangle = Shape::new(ShapeType::Triangle, 1500000, 3000000, 1500000, 1200000)
        .with_fill(ShapeFill::new("8064A2"))
        .with_text("Triangle");
    
    let diamond = Shape::new(ShapeType::Diamond, 4000000, 3000000, 1500000, 1200000)
        .with_fill(ShapeFill::new("F79646"))
        .with_text("Diamond");
    
    slides.push(
        SlideContent::new("Shape Types with Color Fills")
            .add_shape(rect)
            .add_shape(ellipse)
            .add_shape(rounded)
            .add_shape(triangle)
            .add_shape(diamond)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 10: Gradient Fills (NEW)
    // =========================================================================
    println!("🌈 Slide 10: Gradient Fills");
    
    // Horizontal gradient
    let gradient_h = Shape::new(ShapeType::Rectangle, 500000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("1565C0", "42A5F5", GradientDirection::Horizontal))
        .with_text("Horizontal");
    
    // Vertical gradient
    let gradient_v = Shape::new(ShapeType::Rectangle, 3200000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("2E7D32", "81C784", GradientDirection::Vertical))
        .with_text("Vertical");
    
    // Diagonal gradient
    let gradient_d = Shape::new(ShapeType::RoundedRectangle, 5900000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("C62828", "EF9A9A", GradientDirection::DiagonalDown))
        .with_text("Diagonal");
    
    // Three-color gradient
    let gradient_3 = Shape::new(ShapeType::Ellipse, 1800000, 3200000, 2500000, 1200000)
        .with_gradient(GradientFill::three_color("FF6F00", "FFC107", "FFEB3B", GradientDirection::Horizontal))
        .with_text("3-Color");
    
    // Custom angle gradient
    let gradient_angle = Shape::new(ShapeType::RoundedRectangle, 4800000, 3200000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("7B1FA2", "E1BEE7", GradientDirection::Angle(135)))
        .with_text("135° Angle");
    
    slides.push(
        SlideContent::new("Gradient Fills - Multiple Directions")
            .add_shape(gradient_h)
            .add_shape(gradient_v)
            .add_shape(gradient_d)
            .add_shape(gradient_3)
            .add_shape(gradient_angle)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 11: Transparency (NEW)
    // =========================================================================
    println!("👻 Slide 11: Transparency Effects");
    
    // Base shape (fully opaque)
    let base = Shape::new(ShapeType::Rectangle, 1000000, 1800000, 3000000, 2000000)
        .with_fill(ShapeFill::new("1565C0"))
        .with_text("Base (100%)");
    
    // 25% transparent overlay
    let trans_25 = Shape::new(ShapeType::Rectangle, 2000000, 2200000, 2500000, 1500000)
        .with_fill(ShapeFill::new("F44336").with_transparency(25))
        .with_line(ShapeLine::new("B71C1C", 25400))
        .with_text("25% Transparent");
    
    // 50% transparent overlay
    let trans_50 = Shape::new(ShapeType::Ellipse, 4500000, 1800000, 2500000, 2000000)
        .with_fill(ShapeFill::new("4CAF50").with_transparency(50))
        .with_line(ShapeLine::new("1B5E20", 25400))
        .with_text("50% Transparent");
    
    // 75% transparent overlay
    let trans_75 = Shape::new(ShapeType::RoundedRectangle, 5500000, 2500000, 2500000, 1500000)
        .with_fill(ShapeFill::new("FF9800").with_transparency(75))
        .with_line(ShapeLine::new("E65100", 25400))
        .with_text("75% Transparent");
    
    slides.push(
        SlideContent::new("Transparency Effects - Overlapping Shapes")
            .add_shape(base)
            .add_shape(trans_25)
            .add_shape(trans_50)
            .add_shape(trans_75)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 12: Styled Connectors (NEW)
    // =========================================================================
    println!("🔗 Slide 12: Styled Connectors");
    
    // Create shapes to connect
    let box1 = Shape::new(ShapeType::RoundedRectangle, 500000, 1800000, 1800000, 800000)
        .with_id(100)
        .with_fill(ShapeFill::new("1565C0"))
        .with_text("Start");
    
    let box2 = Shape::new(ShapeType::RoundedRectangle, 3500000, 1800000, 1800000, 800000)
        .with_id(101)
        .with_fill(ShapeFill::new("2E7D32"))
        .with_text("Process");
    
    let box3 = Shape::new(ShapeType::RoundedRectangle, 6500000, 1800000, 1800000, 800000)
        .with_id(102)
        .with_fill(ShapeFill::new("C62828"))
        .with_text("End");
    
    // Straight connector with arrow
    let conn1 = Connector::straight(2300000, 2200000, 3500000, 2200000)
        .with_line(ConnectorLine::new("1565C0", 25400))
        .with_end_arrow(ArrowType::Triangle)
        .with_arrow_size(ArrowSize::Large);
    
    // Elbow connector with stealth arrow
    let conn2 = Connector::elbow(5300000, 2200000, 6500000, 2200000)
        .with_line(ConnectorLine::new("2E7D32", 38100).with_dash(LineDash::Dash))
        .with_end_arrow(ArrowType::Stealth)
        .with_arrow_size(ArrowSize::Medium);
    
    // Curved connector examples
    let box4 = Shape::new(ShapeType::Ellipse, 1000000, 3200000, 1500000, 800000)
        .with_id(103)
        .with_fill(ShapeFill::new("7B1FA2"))
        .with_text("A");
    
    let box5 = Shape::new(ShapeType::Ellipse, 4000000, 3200000, 1500000, 800000)
        .with_id(104)
        .with_fill(ShapeFill::new("00838F"))
        .with_text("B");
    
    let box6 = Shape::new(ShapeType::Ellipse, 7000000, 3200000, 1500000, 800000)
        .with_id(105)
        .with_fill(ShapeFill::new("EF6C00"))
        .with_text("C");
    
    // Curved connector with diamond arrow
    let conn3 = Connector::curved(2500000, 3600000, 4000000, 3600000)
        .with_line(ConnectorLine::new("7B1FA2", 19050).with_dash(LineDash::DashDot))
        .with_arrows(ArrowType::Oval, ArrowType::Diamond);
    
    // Dotted connector
    let conn4 = Connector::straight(5500000, 3600000, 7000000, 3600000)
        .with_line(ConnectorLine::new("00838F", 12700).with_dash(LineDash::Dot))
        .with_end_arrow(ArrowType::Open);
    
    slides.push(
        SlideContent::new("Styled Connectors - Types, Arrows, Dashes")
            .add_shape(box1)
            .add_shape(box2)
            .add_shape(box3)
            .add_shape(box4)
            .add_shape(box5)
            .add_shape(box6)
            .add_connector(conn1)
            .add_connector(conn2)
            .add_connector(conn3)
            .add_connector(conn4)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 13: Images
    // =========================================================================
    println!("🖼️  Slide 13: Image Placeholders");
    
    let img1 = Image::new("logo.png", 2500000, 1800000, "png")
        .position(500000, 1600000);
    let img2 = Image::new("photo.jpg", 2500000, 1800000, "jpg")
        .position(3500000, 1600000);
    let img3 = Image::new("diagram.png", 2000000, 1800000, "png")
        .position(6500000, 1600000);
    
    slides.push(
        SlideContent::new("Image Placeholders")
            .add_image(img1)
            .add_image(img2)
            .add_image(img3)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 11: Advanced Table with Borders & Alignment (NEW)
    // =========================================================================
    println!("📊 Slide 11: Advanced Table (borders, alignment, merged cells)");
    
    // Build advanced table using generator's TableBuilder with alignment
    let advanced_table = TableBuilder::new(vec![2000000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2024 Financial Report").bold().background_color("1F4E79").text_color("FFFFFF").align_center().font_size(14),
            TableCell::new("").background_color("1F4E79"),
            TableCell::new("").background_color("1F4E79"),
            TableCell::new("").background_color("1F4E79"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Category").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Revenue").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Expenses").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Profit").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Product Sales").text_color("000000").align_left(),
            TableCell::new("$1,250,000").text_color("2E7D32").align_right(),
            TableCell::new("$450,000").text_color("C62828").align_right(),
            TableCell::new("$800,000").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Services").text_color("000000").align_left(),
            TableCell::new("$890,000").text_color("2E7D32").align_right(),
            TableCell::new("$320,000").text_color("C62828").align_right(),
            TableCell::new("$570,000").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Total").bold().background_color("E7E6E6").text_color("000000").align_left(),
            TableCell::new("$2,140,000").bold().background_color("E7E6E6").text_color("000000").align_right(),
            TableCell::new("$770,000").bold().background_color("E7E6E6").text_color("000000").align_right(),
            TableCell::new("$1,370,000").bold().background_color("C6EFCE").text_color("006100").align_right(),
        ]))
        .position(300000, 1600000)
        .build();
    
    slides.push(
        SlideContent::new("Financial Report - Advanced Table")
            .table(advanced_table)
            .title_color("1F4E79")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 12: Comparison Matrix Table (NEW)
    // =========================================================================
    println!("📊 Slide 12: Comparison Matrix Table");
    
    let comparison_table = TableBuilder::new(vec![2000000, 1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Feature").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Basic").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Pro").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Enterprise").bold().background_color("4472C4").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Storage").text_color("000000"),
            TableCell::new("5 GB").text_color("000000"),
            TableCell::new("50 GB").text_color("000000"),
            TableCell::new("Unlimited").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Users").text_color("000000"),
            TableCell::new("1").text_color("000000"),
            TableCell::new("10").text_color("000000"),
            TableCell::new("Unlimited").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Support").text_color("000000"),
            TableCell::new("Email").text_color("000000"),
            TableCell::new("24/7 Chat").text_color("000000"),
            TableCell::new("Dedicated").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("API Access").text_color("000000"),
            TableCell::new("No").text_color("C62828"),
            TableCell::new("Yes").text_color("2E7D32"),
            TableCell::new("Yes + Priority").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Price/month").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$9").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$29").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$99").bold().background_color("F2F2F2").text_color("000000"),
        ]))
        .position(500000, 1600000)
        .build();
    
    slides.push(
        SlideContent::new("Pricing Comparison Matrix")
            .table(comparison_table)
            .title_color("4472C4")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 13: Process Flow with Shapes (NEW - SmartArt-like)
    // =========================================================================
    println!("🔷 Slide 13: Process Flow (SmartArt-style)");
    
    // Create process flow using shapes
    let step1 = Shape::new(ShapeType::RoundedRectangle, 300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("1. Research");
    let arrow1 = Shape::new(ShapeType::RightArrow, 1800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step2 = Shape::new(ShapeType::RoundedRectangle, 2300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("2. Design");
    let arrow2 = Shape::new(ShapeType::RightArrow, 3800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step3 = Shape::new(ShapeType::RoundedRectangle, 4300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("3. Develop");
    let arrow3 = Shape::new(ShapeType::RightArrow, 5800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step4 = Shape::new(ShapeType::RoundedRectangle, 6300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("5B9BD5"))
        .with_text("4. Deploy");
    
    slides.push(
        SlideContent::new("Development Process Flow")
            .add_shape(step1)
            .add_shape(arrow1)
            .add_shape(step2)
            .add_shape(arrow2)
            .add_shape(step3)
            .add_shape(arrow3)
            .add_shape(step4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 14: Organization Chart with Shapes (NEW)
    // =========================================================================
    println!("🔷 Slide 14: Organization Chart");
    
    // CEO at top
    let ceo = Shape::new(ShapeType::RoundedRectangle, 3500000, 1400000, 2000000, 600000)
        .with_fill(ShapeFill::new("1F4E79"))
        .with_text("CEO");
    
    // Vertical line from CEO
    let line1 = Shape::new(ShapeType::Rectangle, 4450000, 2000000, 100000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // Horizontal connector
    let hline = Shape::new(ShapeType::Rectangle, 1950000, 2400000, 5100000, 50000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // CTO, CFO, COO
    let cto = Shape::new(ShapeType::RoundedRectangle, 1000000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("CTO");
    let cfo = Shape::new(ShapeType::RoundedRectangle, 3600000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("CFO");
    let coo = Shape::new(ShapeType::RoundedRectangle, 6200000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("COO");
    
    // Vertical lines to departments
    let vline1 = Shape::new(ShapeType::Rectangle, 1850000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let vline2 = Shape::new(ShapeType::Rectangle, 4450000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let vline3 = Shape::new(ShapeType::Rectangle, 7050000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // Teams under CTO
    let eng = Shape::new(ShapeType::Rectangle, 500000, 3300000, 1200000, 400000)
        .with_fill(ShapeFill::new("BDD7EE"))
        .with_text("Engineering");
    let product = Shape::new(ShapeType::Rectangle, 1800000, 3300000, 1200000, 400000)
        .with_fill(ShapeFill::new("BDD7EE"))
        .with_text("Product");
    
    slides.push(
        SlideContent::new("Organization Structure")
            .add_shape(ceo)
            .add_shape(line1)
            .add_shape(hline)
            .add_shape(cto)
            .add_shape(cfo)
            .add_shape(coo)
            .add_shape(vline1)
            .add_shape(vline2)
            .add_shape(vline3)
            .add_shape(eng)
            .add_shape(product)
            .title_color("1F4E79")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 15: PDCA Cycle Diagram (NEW)
    // =========================================================================
    println!("🔷 Slide 15: PDCA Cycle Diagram");
    
    // Four quadrants for PDCA
    let plan = Shape::new(ShapeType::RoundedRectangle, 1500000, 1600000, 2500000, 1500000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("PLAN\n\nDefine goals\nand strategy");
    let do_box = Shape::new(ShapeType::RoundedRectangle, 4500000, 1600000, 2500000, 1500000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("DO\n\nImplement\nthe plan");
    let check = Shape::new(ShapeType::RoundedRectangle, 4500000, 3300000, 2500000, 1500000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("CHECK\n\nMeasure\nresults");
    let act = Shape::new(ShapeType::RoundedRectangle, 1500000, 3300000, 2500000, 1500000)
        .with_fill(ShapeFill::new("FFC000"))
        .with_text("ACT\n\nAdjust and\nimprove");
    
    // Arrows between quadrants
    let arr1 = Shape::new(ShapeType::RightArrow, 4100000, 2100000, 300000, 300000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr2 = Shape::new(ShapeType::DownArrow, 5600000, 3200000, 300000, 200000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr3 = Shape::new(ShapeType::LeftArrow, 4100000, 3800000, 300000, 300000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr4 = Shape::new(ShapeType::UpArrow, 2600000, 3200000, 300000, 200000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    slides.push(
        SlideContent::new("PDCA Continuous Improvement Cycle")
            .add_shape(plan)
            .add_shape(do_box)
            .add_shape(check)
            .add_shape(act)
            .add_shape(arr1)
            .add_shape(arr2)
            .add_shape(arr3)
            .add_shape(arr4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 16: Pyramid Diagram (Maslow's Hierarchy) (NEW)
    // =========================================================================
    println!("🔷 Slide 16: Pyramid Diagram");
    
    // Build pyramid from bottom to top
    let level5 = Shape::new(ShapeType::Trapezoid, 500000, 4000000, 8000000, 600000)
        .with_fill(ShapeFill::new("C00000"))
        .with_text("Physiological Needs - Food, Water, Shelter");
    let level4 = Shape::new(ShapeType::Trapezoid, 1000000, 3400000, 7000000, 600000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Safety Needs - Security, Stability");
    let level3 = Shape::new(ShapeType::Trapezoid, 1500000, 2800000, 6000000, 600000)
        .with_fill(ShapeFill::new("FFC000"))
        .with_text("Love & Belonging - Relationships");
    let level2 = Shape::new(ShapeType::Trapezoid, 2000000, 2200000, 5000000, 600000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Esteem - Achievement, Respect");
    let level1 = Shape::new(ShapeType::Triangle, 2500000, 1500000, 4000000, 700000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Self-Actualization");
    
    slides.push(
        SlideContent::new("Maslow's Hierarchy of Needs")
            .add_shape(level5)
            .add_shape(level4)
            .add_shape(level3)
            .add_shape(level2)
            .add_shape(level1)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 17: Venn Diagram (NEW)
    // =========================================================================
    println!("🔷 Slide 17: Venn Diagram");
    
    // Three overlapping circles
    let circle1 = Shape::new(ShapeType::Ellipse, 1500000, 1800000, 3000000, 3000000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Skills");
    let circle2 = Shape::new(ShapeType::Ellipse, 3500000, 1800000, 3000000, 3000000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Passion");
    let circle3 = Shape::new(ShapeType::Ellipse, 2500000, 3200000, 3000000, 3000000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Market Need");
    
    // Center label
    let center = Shape::new(ShapeType::Ellipse, 3200000, 2800000, 1600000, 800000)
        .with_fill(ShapeFill::new("FFFFFF"))
        .with_text("IKIGAI");
    
    slides.push(
        SlideContent::new("Finding Your Ikigai - Venn Diagram")
            .add_shape(circle1)
            .add_shape(circle2)
            .add_shape(circle3)
            .add_shape(center)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 18: Timeline/Roadmap (NEW)
    // =========================================================================
    println!("📊 Slide 18: Project Timeline");
    
    let timeline_table = TableBuilder::new(vec![1500000, 1500000, 1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q2 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q3 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q4 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q1 2025").bold().background_color("4472C4").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Research\n& Planning").background_color("BDD7EE").text_color("1F497D"),
            TableCell::new("Design\nPhase").background_color("BDD7EE").text_color("1F497D"),
            TableCell::new("Development\nSprint 1-3").background_color("C6EFCE").text_color("006100"),
            TableCell::new("Testing\n& QA").background_color("FCE4D6").text_color("C65911"),
            TableCell::new("Launch\n& Support").background_color("E2EFDA").text_color("375623"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("✓ Complete").bold().text_color("2E7D32"),
            TableCell::new("✓ Complete").bold().text_color("2E7D32"),
            TableCell::new("In Progress").text_color("ED7D31"),
            TableCell::new("Planned").text_color("7F7F7F"),
            TableCell::new("Planned").text_color("7F7F7F"),
        ]))
        .position(300000, 2000000)
        .build();
    
    slides.push(
        SlideContent::new("Project Roadmap 2024-2025")
            .table(timeline_table)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 19: Dashboard Summary (NEW)
    // =========================================================================
    println!("🔷 Slide 19: Dashboard with KPIs");
    
    // KPI boxes
    let kpi1 = Shape::new(ShapeType::RoundedRectangle, 300000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Revenue\n\n$2.14M\n+15% YoY");
    let kpi2 = Shape::new(ShapeType::RoundedRectangle, 2500000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Customers\n\n12,450\n+22% YoY");
    let kpi3 = Shape::new(ShapeType::RoundedRectangle, 4700000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("NPS Score\n\n72\n+8 pts");
    let kpi4 = Shape::new(ShapeType::RoundedRectangle, 6900000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("5B9BD5"))
        .with_text("Retention\n\n94%\n+3% YoY");
    
    // Status indicators
    let status1 = Shape::new(ShapeType::Ellipse, 1800000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    let status2 = Shape::new(ShapeType::Ellipse, 4000000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    let status3 = Shape::new(ShapeType::Ellipse, 6200000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("FFC000"));
    let status4 = Shape::new(ShapeType::Ellipse, 8400000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    
    slides.push(
        SlideContent::new("Executive Dashboard - Q1 2024")
            .add_shape(kpi1)
            .add_shape(kpi2)
            .add_shape(kpi3)
            .add_shape(kpi4)
            .add_shape(status1)
            .add_shape(status2)
            .add_shape(status3)
            .add_shape(status4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 20: Summary Slide (NEW)
    // =========================================================================
    println!("📝 Slide 20: Summary with Speaker Notes");
    
    slides.push(
        SlideContent::new("Summary & Next Steps")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Completed: Research, Design, Initial Development")
            .add_bullet("In Progress: Sprint 3 Development")
            .add_bullet("Next: QA Testing Phase (Q4 2024)")
            .add_bullet("Launch Target: Q1 2025")
            .add_bullet("Key Risks: Resource constraints, Timeline pressure")
            .content_size(24)
            .notes("Speaker Notes:\n\n1. Emphasize the progress made\n2. Highlight key achievements\n3. Address any concerns about timeline\n4. Open for Q&A")
    );

    // =========================================================================
    // SLIDE 21: Bullet Styles (NEW v0.2.1)
    // =========================================================================
    println!("🔢 Slide 21: Bullet Styles (NEW)");
    
    // Numbered list
    slides.push(
        SlideContent::new("Bullet Styles - Numbered List")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .with_bullet_style(BulletStyle::Number)
            .add_bullet("First numbered item")
            .add_bullet("Second numbered item")
            .add_bullet("Third numbered item")
            .add_bullet("Fourth numbered item")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 22: Lettered Lists (NEW v0.2.1)
    // =========================================================================
    println!("🔤 Slide 22: Lettered Lists (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Lettered Lists")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_lettered("Option A - First choice")
            .add_lettered("Option B - Second choice")
            .add_lettered("Option C - Third choice")
            .add_lettered("Option D - Fourth choice")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 23: Roman Numerals (NEW v0.2.1)
    // =========================================================================
    println!("🏛️ Slide 23: Roman Numerals (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Roman Numerals")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .with_bullet_style(BulletStyle::RomanUpper)
            .add_bullet("Chapter I - Introduction")
            .add_bullet("Chapter II - Background")
            .add_bullet("Chapter III - Methodology")
            .add_bullet("Chapter IV - Results")
            .add_bullet("Chapter V - Conclusion")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 24: Custom Bullets (NEW v0.2.1)
    // =========================================================================
    println!("⭐ Slide 24: Custom Bullets (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Custom Characters")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_styled_bullet("Star bullet point", BulletStyle::Custom('★'))
            .add_styled_bullet("Arrow bullet point", BulletStyle::Custom('→'))
            .add_styled_bullet("Check bullet point", BulletStyle::Custom('✓'))
            .add_styled_bullet("Diamond bullet point", BulletStyle::Custom('◆'))
            .add_styled_bullet("Heart bullet point", BulletStyle::Custom('♥'))
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 25: Sub-bullets / Hierarchy (NEW v0.2.1)
    // =========================================================================
    println!("📊 Slide 25: Sub-bullets Hierarchy (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Hierarchical Lists")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Main Topic 1")
            .add_sub_bullet("Supporting detail A")
            .add_sub_bullet("Supporting detail B")
            .add_bullet("Main Topic 2")
            .add_sub_bullet("Supporting detail C")
            .add_sub_bullet("Supporting detail D")
            .add_bullet("Main Topic 3")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 26: Text Enhancements (NEW v0.2.1)
    // =========================================================================
    println!("✏️ Slide 26: Text Enhancements (NEW)");
    
    // Use BulletPoint with formatting
    let strikethrough_bullet = BulletPoint::new("Strikethrough: This text is crossed out").strikethrough();
    let highlight_bullet = BulletPoint::new("Highlight: Yellow background for emphasis").highlight("FFFF00");
    let subscript_bullet = BulletPoint::new("Subscript: H₂O - for chemical formulas").subscript();
    let superscript_bullet = BulletPoint::new("Superscript: x² - for math expressions").superscript();
    let bold_colored = BulletPoint::new("Combined: Bold + Red color").bold().color("FF0000");
    
    let mut text_enhancements_slide = SlideContent::new("Text Enhancements - New Formatting")
        .layout(SlideLayout::TitleAndContent)
        .title_color("1F497D")
        .title_bold(true)
        .content_size(24);
    text_enhancements_slide.bullets.push(strikethrough_bullet);
    text_enhancements_slide.bullets.push(highlight_bullet);
    text_enhancements_slide.bullets.push(subscript_bullet);
    text_enhancements_slide.bullets.push(superscript_bullet);
    text_enhancements_slide.bullets.push(bold_colored);
    
    slides.push(text_enhancements_slide);

    // =========================================================================
    // SLIDE 27: Font Size Presets (NEW v0.2.1)
    // =========================================================================
    println!("🔤 Slide 27: Font Size Presets (NEW)");
    
    // Demonstrate different font sizes per bullet
    let large_bullet = BulletPoint::new(&format!("LARGE: {}pt - Extra large text", font_sizes::LARGE)).font_size(font_sizes::LARGE);
    let heading_bullet = BulletPoint::new(&format!("HEADING: {}pt - Section headers", font_sizes::HEADING)).font_size(font_sizes::HEADING);
    let body_bullet = BulletPoint::new(&format!("BODY: {}pt - Regular content", font_sizes::BODY)).font_size(font_sizes::BODY);
    let small_bullet = BulletPoint::new(&format!("SMALL: {}pt - Smaller text", font_sizes::SMALL)).font_size(font_sizes::SMALL);
    let caption_bullet = BulletPoint::new(&format!("CAPTION: {}pt - Captions and notes", font_sizes::CAPTION)).font_size(font_sizes::CAPTION);
    
    let mut font_size_slide = SlideContent::new("Font Size Presets - Each line different size")
        .layout(SlideLayout::TitleAndContent)
        .title_color("1F497D")
        .title_bold(true)
        .title_size(font_sizes::TITLE);
    font_size_slide.bullets.push(large_bullet);
    font_size_slide.bullets.push(heading_bullet);
    font_size_slide.bullets.push(body_bullet);
    font_size_slide.bullets.push(small_bullet);
    font_size_slide.bullets.push(caption_bullet);
    
    slides.push(font_size_slide);

    // =========================================================================
    // SLIDE 28: Theme Colors (NEW v0.2.1)
    // =========================================================================
    println!("🎨 Slide 28: Theme Colors (NEW)");
    
    // Create shapes with theme colors
    let corporate_shape = Shape::new(ShapeType::Rectangle, 500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::CORPORATE.primary))
        .with_text("Corporate");
    
    let modern_shape = Shape::new(ShapeType::Rectangle, 2500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::MODERN.primary))
        .with_text("Modern");
    
    let vibrant_shape = Shape::new(ShapeType::Rectangle, 4500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::VIBRANT.primary))
        .with_text("Vibrant");
    
    let dark_shape = Shape::new(ShapeType::Rectangle, 6500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::DARK.primary))
        .with_text("Dark");
    
    let nature_shape = Shape::new(ShapeType::Rectangle, 500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::NATURE.primary))
        .with_text("Nature");
    
    let tech_shape = Shape::new(ShapeType::Rectangle, 2500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::TECH.primary))
        .with_text("Tech");
    
    let carbon_shape = Shape::new(ShapeType::Rectangle, 4500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::CARBON.primary))
        .with_text("Carbon");
    
    slides.push(
        SlideContent::new("Theme Color Palettes")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_shape(corporate_shape)
            .add_shape(modern_shape)
            .add_shape(vibrant_shape)
            .add_shape(dark_shape)
            .add_shape(nature_shape)
            .add_shape(tech_shape)
            .add_shape(carbon_shape)
    );

    // =========================================================================
    // SLIDE 29: Material & Carbon Design Colors (NEW v0.2.1)
    // =========================================================================
    println!("🌈 Slide 29: Material & Carbon Colors (NEW)");
    
    // Material Design colors
    let material_red = Shape::new(ShapeType::Rectangle, 500000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_RED))
        .with_text("M-Red");
    
    let material_blue = Shape::new(ShapeType::Rectangle, 1900000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_BLUE))
        .with_text("M-Blue");
    
    let material_green = Shape::new(ShapeType::Rectangle, 3300000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_GREEN))
        .with_text("M-Green");
    
    let material_orange = Shape::new(ShapeType::Rectangle, 4700000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_ORANGE))
        .with_text("M-Orange");
    
    let material_purple = Shape::new(ShapeType::Rectangle, 6100000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_PURPLE))
        .with_text("M-Purple");
    
    // Carbon Design colors
    let carbon_blue = Shape::new(ShapeType::Rectangle, 500000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_BLUE_60))
        .with_text("C-Blue");
    
    let carbon_green = Shape::new(ShapeType::Rectangle, 1900000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_GREEN_50))
        .with_text("C-Green");
    
    let carbon_red = Shape::new(ShapeType::Rectangle, 3300000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_RED_60))
        .with_text("C-Red");
    
    let carbon_purple = Shape::new(ShapeType::Rectangle, 4700000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_PURPLE_60))
        .with_text("C-Purple");
    
    let carbon_gray = Shape::new(ShapeType::Rectangle, 6100000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_GRAY_100))
        .with_text("C-Gray");
    
    slides.push(
        SlideContent::new("Material & Carbon Design Colors")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_shape(material_red)
            .add_shape(material_blue)
            .add_shape(material_green)
            .add_shape(material_orange)
            .add_shape(material_purple)
            .add_shape(carbon_blue)
            .add_shape(carbon_green)
            .add_shape(carbon_red)
            .add_shape(carbon_purple)
            .add_shape(carbon_gray)
    );

    // =========================================================================
    // SLIDE 30: Image from Base64 (NEW v0.2.1)
    // =========================================================================
    println!("🖼️ Slide 30: Image from Base64 (NEW)");
    
    // 1x1 red PNG pixel in base64
    let _red_pixel_base64 = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8DwHwAFBQIAX8jx0gAAAABJRU5ErkJggg==";
    
    // Create image from base64 (demonstrating the API)
    let _base64_image = ImageBuilder::from_base64(_red_pixel_base64, 914400, 914400, "PNG")
        .position(4000000, 2500000)
        .build();
    
    slides.push(
        SlideContent::new("Image Loading - New Methods")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Image::new(path) - Load from file path")
            .add_bullet("Image::from_base64(data) - Load from base64 string")
            .add_bullet("Image::from_bytes(data) - Load from raw bytes")
            .add_bullet("ImageBuilder for fluent API configuration")
            .add_bullet("Built-in base64 decoder (no external deps)")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 31: Feature Summary (NEW v0.2.1)
    // =========================================================================
    println!("📋 Slide 31: v0.2.1 Feature Summary (NEW)");
    
    slides.push(
        SlideContent::new("New Features in v0.2.1")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_numbered("BulletStyle: Number, Letter, Roman, Custom")
            .add_numbered("TextFormat: Strikethrough, Highlight")
            .add_numbered("TextFormat: Subscript, Superscript")
            .add_numbered("Font size presets in prelude")
            .add_numbered("Image::from_base64 and from_bytes")
            .add_numbered("Theme color palettes (7 themes)")
            .add_numbered("Material & Carbon Design colors")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 32: Slide Show Settings - Comparison Table (REAL: embedded in presProps.xml)
    // =========================================================================
    println!("🎬 Slide 34: Slide Show Settings (Visual)");

    let show_speaker = SlideShowSettings::new().pen_color(PenColor::red());
    let show_kiosk = SlideShowSettings::kiosk();
    let _show_range = SlideShowSettings::new()
        .show_type(ShowType::Browsed)
        .slide_range(SlideRange::Range { start: 1, end: 10 })
        .without_animation(true);
    let _speaker_xml = show_speaker.to_xml();
    let _kiosk_xml = show_kiosk.to_xml();

    let show_table = TableBuilder::new(vec![2000000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Setting").bold().background_color("1F4E79").text_color("FFFFFF"),
            TableCell::new("Speaker").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Kiosk").bold().background_color("ED7D31").text_color("FFFFFF"),
            TableCell::new("Browsed").bold().background_color("70AD47").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Loop").bold().background_color("D6E4F0"),
            TableCell::new("No"), TableCell::new("Yes").bold().text_color("2E7D32"),
            TableCell::new("No"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Narration").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("No").text_color("C62828"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Animation").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("Yes"),
            TableCell::new("No").text_color("C62828"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Timings").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("Auto"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Slide Range").bold().background_color("D6E4F0"),
            TableCell::new("All"), TableCell::new("All"),
            TableCell::new("1-10"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Pen Color").bold().background_color("D6E4F0"),
            TableCell::new("Red").text_color("FF0000"),
            TableCell::new("Red").text_color("FF0000"),
            TableCell::new("Red").text_color("FF0000"),
        ]))
        .position(300000, 1600000)
        .build();

    // Mode icons
    let icon_speaker = Shape::new(ShapeType::RoundedRectangle, 300000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Speaker: Full control");
    let icon_kiosk = Shape::new(ShapeType::RoundedRectangle, 3100000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Kiosk: Auto-loop");
    let icon_browsed = Shape::new(ShapeType::RoundedRectangle, 5900000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Browsed: Scrollbar");

    slides.push(
        SlideContent::new("Slide Show Settings - Mode Comparison")
            .table(show_table)
            .add_shape(icon_speaker)
            .add_shape(icon_kiosk)
            .add_shape(icon_browsed)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 35: Print Settings - Visual Handout Grid
    // =========================================================================
    println!("🖨️  Slide 35: Print Settings & Handouts (Visual)");

    let print = PrintSettings::new()
        .print_what(PrintWhat::Handouts)
        .color_mode(PrintColorMode::Grayscale)
        .handout_layout(GenHandoutLayout::SlidesPerPage6)
        .frame_slides(true)
        .header("Q1 2025 Strategy Review")
        .footer("Confidential - Internal Use Only")
        .print_date(true)
        .print_page_numbers(true);
    let _prnpr_xml = print.to_prnpr_xml();
    let _handout_xml = print.to_handout_master_xml();

    // Visual: 6-slide handout grid (2 cols x 3 rows)
    let hdr = Shape::new(ShapeType::Rectangle, 300000, 1500000, 4200000, 300000)
        .with_fill(ShapeFill::new("E7E6E6"))
        .with_text("Q1 2025 Strategy Review");
    // Row 1
    let s1 = Shape::new(ShapeType::Rectangle, 400000, 2000000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 1");
    let s2 = Shape::new(ShapeType::Rectangle, 2500000, 2000000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 2");
    // Row 2
    let s3 = Shape::new(ShapeType::Rectangle, 400000, 3200000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 3");
    let s4 = Shape::new(ShapeType::Rectangle, 2500000, 3200000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 4");
    // Row 3
    let s5 = Shape::new(ShapeType::Rectangle, 400000, 4400000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 5");
    let s6 = Shape::new(ShapeType::Rectangle, 2500000, 4400000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 6");
    let ftr = Shape::new(ShapeType::Rectangle, 300000, 5600000, 4200000, 300000)
        .with_fill(ShapeFill::new("E7E6E6"))
        .with_text("Confidential - Internal Use Only");

    // Settings summary table on the right
    let print_table = TableBuilder::new(vec![1800000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Print Settings").bold().background_color("1F4E79").text_color("FFFFFF"),
            TableCell::new("").background_color("1F4E79"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Print What").bold().background_color("D6E4F0"),
            TableCell::new("Handouts"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Color Mode").bold().background_color("D6E4F0"),
            TableCell::new("Grayscale"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Layout").bold().background_color("D6E4F0"),
            TableCell::new("6 slides/page"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Frame Slides").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Date").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Page Numbers").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .position(5000000, 1800000)
        .build();

    slides.push(
        SlideContent::new("Print Handout - 6 Slides Per Page")
            .table(print_table)
            .add_shape(hdr)
            .add_shape(s1).add_shape(s2)
            .add_shape(s3).add_shape(s4)
            .add_shape(s5).add_shape(s6)
            .add_shape(ftr)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 36: Advanced Table Merging - Actual Merged Table
    // =========================================================================
    println!("📊 Slide 36: Advanced Table Merging (Visual)");

    // Use TableMergeMap to compute states, then build a visual table
    let mut merge_map = TableMergeMap::new(5, 4);
    merge_map.merge_cells(0, 0, 1, 4).unwrap(); // Title row spans all 4 cols
    merge_map.merge_cells(1, 0, 2, 1).unwrap(); // "Products" spans 2 rows
    merge_map.merge_cells(3, 0, 2, 1).unwrap(); // "Services" spans 2 rows

    // Show merge state labels
    let state_00 = merge_map.cell_state(0, 0); // Anchor gridSpan=4
    let state_01 = merge_map.cell_state(0, 1); // HMerge
    let state_10 = merge_map.cell_state(1, 0); // Anchor rowSpan=2
    let state_20 = merge_map.cell_state(2, 0); // VMerge
    println!("   ├── (0,0): {}", state_00.to_xml_attrs().trim());
    println!("   ├── (0,1): {}", state_01.to_xml_attrs().trim());
    println!("   ├── (1,0): {}", state_10.to_xml_attrs().trim());
    println!("   └── (2,0): {}", state_20.to_xml_attrs().trim());

    // Build the table with REAL merge attributes (gridSpan, rowSpan, hMerge, vMerge)
    let merge_table = TableBuilder::new(vec![1500000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2025 Revenue Report").bold().background_color("1F4E79").text_color("FFFFFF").grid_span(4),
            TableCell::new("").background_color("1F4E79").h_merge(),
            TableCell::new("").background_color("1F4E79").h_merge(),
            TableCell::new("").background_color("1F4E79").h_merge(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Products").bold().background_color("BDD7EE").text_color("1F497D").row_span(2),
            TableCell::new("Hardware").background_color("E2EFDA"),
            TableCell::new("$450,000").text_color("2E7D32").align_right(),
            TableCell::new("+12%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("").background_color("BDD7EE").v_merge(),
            TableCell::new("Software").background_color("E2EFDA"),
            TableCell::new("$680,000").text_color("2E7D32").align_right(),
            TableCell::new("+25%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Services").bold().background_color("FCE4D6").text_color("C65911").row_span(2),
            TableCell::new("Consulting").background_color("FFF2CC"),
            TableCell::new("$320,000").text_color("2E7D32").align_right(),
            TableCell::new("+8%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("").background_color("FCE4D6").v_merge(),
            TableCell::new("Support").background_color("FFF2CC"),
            TableCell::new("$190,000").text_color("2E7D32").align_right(),
            TableCell::new("+5%").bold().text_color("2E7D32").align_right(),
        ]))
        .position(300000, 1600000)
        .build();

    // Legend shapes
    let legend_anchor = Shape::new(ShapeType::RoundedRectangle, 300000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Anchor (gridSpan/rowSpan)");
    let legend_hmerge = Shape::new(ShapeType::RoundedRectangle, 2500000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("hMerge (col covered)");
    let legend_vmerge = Shape::new(ShapeType::RoundedRectangle, 4700000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("vMerge (row covered)");
    let legend_normal = Shape::new(ShapeType::RoundedRectangle, 6900000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"))
        .with_text("Normal (no merge)");

    slides.push(
        SlideContent::new("Advanced Table Merging - Merged Cells")
            .table(merge_table)
            .add_shape(legend_anchor)
            .add_shape(legend_hmerge)
            .add_shape(legend_vmerge)
            .add_shape(legend_normal)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // Build PresentationSettings with all advanced features
    // =========================================================================
    println!("\n⚙️  Building Presentation Settings...");

    // Slide show settings (embedded in presProps.xml as <p:showPr>)
    let show_settings = SlideShowSettings::new()
        .show_type(ShowType::Speaker)
        .pen_color(PenColor::red())
        .use_timings(true);
    println!("   ├── Slide Show: Speaker mode, red pen, timings enabled");
    println!("   │   └── XML: {} bytes", show_settings.to_xml().len());

    // Print settings (embedded in presProps.xml as <p:prnPr>)
    let print_settings = PrintSettings::new()
        .print_what(PrintWhat::Handouts)
        .color_mode(PrintColorMode::Grayscale)
        .handout_layout(GenHandoutLayout::SlidesPerPage6)
        .frame_slides(true)
        .header("Q1 2025 Strategy Review")
        .footer("Confidential - Internal Use Only")
        .print_date(true)
        .print_page_numbers(true);
    println!("   └── Print: Handouts, 6/page, grayscale, framed");
    println!("       └── XML: {} bytes", print_settings.to_prnpr_xml().len());

    let pres_settings = PresentationSettings::new()
        .slide_show(show_settings)
        .print(print_settings);
    println!("   All settings configured → presProps.xml");

    // =========================================================================
    // Generate PPTX with real integrated features
    // =========================================================================
    println!("\n📦 Generating PPTX with integrated features...");
    let pptx_data = create_pptx_with_settings(
        "PPTX-RS Element Showcase",
        slides.clone(),
        Some(pres_settings),
    )?;
    fs::write("comprehensive_demo.pptx", &pptx_data)?;
    println!("   ✓ Created comprehensive_demo.pptx ({} slides, {} bytes)", 
             slides.len(), pptx_data.len());

    // =========================================================================
    // Package Analysis - Demonstrate Reading
    // =========================================================================
    println!("\n📖 Package Analysis (Read Capability):");
    
    let package = Package::open("comprehensive_demo.pptx")?;
    let paths = package.part_paths();
    
    let slide_count = paths.iter()
        .filter(|p| p.starts_with("ppt/slides/slide") && p.ends_with(".xml"))
        .count();
    
    println!("   ├── Total parts: {}", package.part_count());
    println!("   ├── Slides: {}", slide_count);
    println!("   └── Package opened and analyzed successfully");

    // =========================================================================
    // NEW: Parts API Demonstration
    // =========================================================================
    println!("\n🧩 Parts API Demonstration:");
    
    // SlideLayoutPart - 11 layout types
    println!("   ┌── SlideLayoutPart (11 layout types):");
    let layouts = [
        LayoutType::Title,
        LayoutType::TitleAndContent,
        LayoutType::SectionHeader,
        LayoutType::TwoContent,
        LayoutType::Comparison,
        LayoutType::TitleOnly,
        LayoutType::Blank,
        LayoutType::ContentWithCaption,
        LayoutType::PictureWithCaption,
        LayoutType::TitleAndVerticalText,
        LayoutType::VerticalTitleAndText,
    ];
    for (i, layout_type) in layouts.iter().enumerate() {
        let layout = SlideLayoutPart::new(i + 1, *layout_type);
        if i < 3 {
            println!("   │   ├── {}: {} ({})", i + 1, layout_type.name(), layout.path());
        }
    }
    println!("   │   └── ... and {} more layout types", layouts.len() - 3);
    
    // SlideMasterPart
    println!("   ├── SlideMasterPart:");
    let mut master = SlideMasterPart::new(1);
    master.set_name("Custom Master");
    master.add_layout_rel_id("rId2");
    master.add_layout_rel_id("rId3");
    println!("   │   ├── Name: {}", master.name());
    println!("   │   ├── Path: {}", master.path());
    println!("   │   └── Layouts: {} linked", master.layout_rel_ids().len());
    
    // ThemePart - Colors and Fonts
    println!("   ├── ThemePart (colors & fonts):");
    let mut theme = ThemePart::new(1);
    theme.set_name("Corporate Theme");
    theme.set_major_font("Arial");
    theme.set_minor_font("Calibri");
    theme.set_color("accent1", "FF5733");
    theme.set_color("accent2", "33FF57");
    let theme_xml = theme.to_xml()?;
    println!("   │   ├── Name: {}", theme.name());
    println!("   │   ├── Major Font: Arial");
    println!("   │   ├── Minor Font: Calibri");
    println!("   │   └── XML size: {} bytes", theme_xml.len());
    
    // NotesSlidePart - Speaker notes
    println!("   ├── NotesSlidePart (speaker notes):");
    let notes = NotesSlidePart::with_text(1, "Remember to:\n- Introduce yourself\n- Explain the agenda\n- Ask for questions");
    let notes_xml = notes.to_xml()?;
    println!("   │   ├── Path: {}", notes.path());
    println!("   │   ├── Text: \"{}...\"", &notes.notes_text()[..20.min(notes.notes_text().len())]);
    println!("   │   └── XML size: {} bytes", notes_xml.len());
    
    // AppPropertiesPart - Application metadata
    println!("   ├── AppPropertiesPart (metadata):");
    let mut app_props = AppPropertiesPart::new();
    app_props.set_company("Acme Corporation");
    app_props.set_slides(slides.len() as u32);
    let app_xml = app_props.to_xml()?;
    println!("   │   ├── Company: Acme Corporation");
    println!("   │   ├── Slides: {}", slides.len());
    println!("   │   └── XML size: {} bytes", app_xml.len());
    
    // MediaPart - Video/Audio formats
    println!("   ├── MediaPart (10 media formats):");
    println!("   │   ├── Video: mp4, webm, avi, wmv, mov");
    println!("   │   ├── Audio: mp3, wav, wma, m4a, ogg");
    let sample_media = MediaPart::new(1, MediaFormat::Mp4, vec![0; 100]);
    println!("   │   └── Sample: {} ({})", sample_media.path(), sample_media.format().mime_type());
    
    // TablePart - Table with formatting
    println!("   ├── TablePart (cell formatting):");
    let table_part = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Header 1").bold().background("4472C4"),
            TableCellPart::new("Header 2").bold().background("4472C4"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Data 1").color("333333"),
            TableCellPart::new("Data 2").italic(),
        ]))
        .position(EMU_PER_INCH, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 6, EMU_PER_INCH * 2);
    let table_xml = table_part.to_slide_xml(10);
    println!("   │   ├── Rows: {}", table_part.rows.len());
    println!("   │   ├── Features: bold, italic, colors, backgrounds");
    println!("   │   └── XML size: {} bytes", table_xml.len());
    
    // ContentTypesPart
    println!("   └── ContentTypesPart:");
    let mut content_types = ContentTypesPart::new();
    content_types.add_presentation();
    content_types.add_slide(1);
    content_types.add_slide_layout(1);
    content_types.add_slide_master(1);
    content_types.add_theme(1);
    content_types.add_core_properties();
    content_types.add_app_properties();
    let ct_xml = content_types.to_xml()?;
    println!("       ├── Path: {}", content_types.path());
    println!("       └── XML size: {} bytes", ct_xml.len());

    // =========================================================================
    // NEW: Elements API Demonstration
    // =========================================================================
    println!("\n🎨 Elements API Demonstration:");
    
    // Color types
    println!("   ┌── Color Types:");
    let rgb = RgbColor::new(255, 87, 51);
    let rgb_hex = RgbColor::from_hex("#4472C4").unwrap();
    let scheme = SchemeColor::Accent1;
    let color = Color::rgb(100, 149, 237);
    println!("   │   ├── RgbColor::new(255, 87, 51) → {}", rgb.to_hex());
    println!("   │   ├── RgbColor::from_hex(\"#4472C4\") → {}", rgb_hex.to_hex());
    println!("   │   ├── SchemeColor::Accent1 → {}", scheme.as_str());
    println!("   │   └── Color::rgb(100, 149, 237) → XML: {}", color.to_xml().chars().take(30).collect::<String>());
    
    // Position and Size
    println!("   ├── Position & Size (EMU units):");
    let pos = Position::from_inches(1.0, 2.0);
    let size = Size::from_inches(4.0, 3.0);
    println!("   │   ├── Position::from_inches(1.0, 2.0) → x={}, y={}", pos.x, pos.y);
    println!("   │   ├── Size::from_inches(4.0, 3.0) → w={}, h={}", size.width, size.height);
    println!("   │   └── EMU_PER_INCH = {}", EMU_PER_INCH);
    
    // Transform
    println!("   └── Transform (position + size + rotation):");
    let transform = Transform::from_inches(1.0, 1.5, 3.0, 2.0).with_rotation(45.0);
    let transform_xml = transform.to_xml();
    println!("       ├── Transform::from_inches(1.0, 1.5, 3.0, 2.0)");
    println!("       ├── .with_rotation(45.0)");
    println!("       └── XML: {}...", &transform_xml[..50.min(transform_xml.len())]);

    // =========================================================================
    // NEW: Advanced Features Demonstration
    // =========================================================================
    println!("\n🚀 Advanced Features Demonstration:");

    // -------------------------------------------------------------------------
    // Complex Table Examples
    // -------------------------------------------------------------------------
    println!("   ┌── Complex Table Examples:");
    
    // Example 1: Financial Report Table
    println!("   │   ┌── Financial Report Table (5x4 with formatting):");
    let financial_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Q1 2024 Financial Summary")
                .col_span(4)
                .bold()
                .center()
                .background("1F4E79")
                .color("FFFFFF")
                .font_size(14)
                .font("Arial Black"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Category").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Revenue").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Expenses").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Profit").bold().center().background("2E75B6").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Product Sales").align(HorizontalAlign::Left),
            TableCellPart::new("$1,250,000").align(HorizontalAlign::Right).color("2E7D32"),
            TableCellPart::new("$450,000").align(HorizontalAlign::Right).color("C62828"),
            TableCellPart::new("$800,000").align(HorizontalAlign::Right).bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Services").align(HorizontalAlign::Left),
            TableCellPart::new("$890,000").align(HorizontalAlign::Right).color("2E7D32"),
            TableCellPart::new("$320,000").align(HorizontalAlign::Right).color("C62828"),
            TableCellPart::new("$570,000").align(HorizontalAlign::Right).bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Total").bold().background("E7E6E6"),
            TableCellPart::new("$2,140,000").bold().align(HorizontalAlign::Right).background("E7E6E6"),
            TableCellPart::new("$770,000").bold().align(HorizontalAlign::Right).background("E7E6E6"),
            TableCellPart::new("$1,370,000").bold().align(HorizontalAlign::Right).background("C6EFCE").color("006100"),
        ]))
        .position(EMU_PER_INCH / 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 8, EMU_PER_INCH * 3);
    let fin_xml = financial_table.to_slide_xml(100);
    println!("   │   │   ├── Merged header spanning 4 columns");
    println!("   │   │   ├── Color-coded values (green=positive, red=negative)");
    println!("   │   │   ├── Custom fonts and sizes");
    println!("   │   │   └── XML: {} bytes", fin_xml.len());

    // Example 2: Comparison Matrix
    println!("   │   ├── Comparison Matrix (features vs products):");
    let matrix_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Feature").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Basic").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Pro").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Enterprise").bold().center().background("4472C4").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Storage").align(HorizontalAlign::Left),
            TableCellPart::new("5 GB").center(),
            TableCellPart::new("50 GB").center(),
            TableCellPart::new("Unlimited").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Users").align(HorizontalAlign::Left),
            TableCellPart::new("1").center(),
            TableCellPart::new("10").center(),
            TableCellPart::new("Unlimited").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Support").align(HorizontalAlign::Left),
            TableCellPart::new("Email").center(),
            TableCellPart::new("24/7 Chat").center(),
            TableCellPart::new("Dedicated").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Price/mo").bold().background("F2F2F2"),
            TableCellPart::new("$9").center().bold().background("F2F2F2"),
            TableCellPart::new("$29").center().bold().background("F2F2F2"),
            TableCellPart::new("$99").center().bold().background("F2F2F2"),
        ]));
    println!("   │   │   └── 5x4 matrix with alternating styles");

    // Example 3: Schedule/Timeline Table
    println!("   │   └── Schedule Table (with row spans):");
    let schedule_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Time").bold().center().background("70AD47").color("FFFFFF"),
            TableCellPart::new("Monday").bold().center().background("70AD47").color("FFFFFF"),
            TableCellPart::new("Tuesday").bold().center().background("70AD47").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("9:00 AM").center().background("E2EFDA"),
            TableCellPart::new("Team Standup").center().row_span(2).valign(VerticalAlign::Middle).background("BDD7EE"),
            TableCellPart::new("Code Review").center(),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("10:00 AM").center().background("E2EFDA"),
            TableCellPart::merged(),
            TableCellPart::new("Sprint Planning").center().background("FCE4D6"),
        ]));
    println!("   │       └── Row spans for multi-hour events");

    // -------------------------------------------------------------------------
    // Complex Animation Sequences
    // -------------------------------------------------------------------------
    println!("   ├── Complex Animation Sequences:");
    
    // Sequence 1: Title entrance with staggered content
    println!("   │   ┌── Staggered Entrance Sequence:");
    let title_anim = Animation::new(2, AnimationEffect::Fade)
        .trigger(AnimationTrigger::OnClick)
        .duration(500);
    let content1 = Animation::new(3, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(200);
    let content2 = Animation::new(4, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(100);
    let content3 = Animation::new(5, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(100);
    let staggered = SlideAnimations::new()
        .add(title_anim)
        .add(content1)
        .add(content2)
        .add(content3)
        .transition(SlideTransition::new(TransitionEffect::Push).direction(AnimationDirection::Left).duration(750));
    let staggered_xml = staggered.to_timing_xml()?;
    println!("   │   │   ├── Title: Fade on click");
    println!("   │   │   ├── Content 1-3: FlyIn with 100ms stagger");
    println!("   │   │   ├── Transition: Push from left (750ms)");
    println!("   │   │   └── XML: {} bytes", staggered_xml.len());

    // Sequence 2: Emphasis and exit
    println!("   │   ├── Emphasis + Exit Sequence:");
    let emphasis = Animation::new(6, AnimationEffect::Pulse)
        .trigger(AnimationTrigger::OnClick)
        .duration(1000)
        .repeat(3);
    let exit = Animation::new(6, AnimationEffect::FadeOut)
        .trigger(AnimationTrigger::AfterPrevious)
        .duration(500);
    let emphasis_seq = SlideAnimations::new()
        .add(emphasis)
        .add(exit);
    println!("   │   │   ├── Pulse 3x on click, then fade out");
    println!("   │   │   └── Same shape, sequential effects");

    // Sequence 3: Motion path
    println!("   │   └── Motion Path Animation:");
    let motion = Animation::new(7, AnimationEffect::Lines)
        .trigger(AnimationTrigger::OnClick)
        .duration(2000);
    println!("   │       └── Custom path: Lines, Arcs, Turns, Loops");

    // -------------------------------------------------------------------------
    // SmartArt Combinations
    // -------------------------------------------------------------------------
    println!("   ├── SmartArt Layout Examples:");
    
    // Process flow
    println!("   │   ┌── Process Flow (5 steps):");
    let process = SmartArtPart::new(1, SmartArtLayout::BasicProcess)
        .add_items(vec!["Research", "Design", "Develop", "Test", "Deploy"])
        .position(EMU_PER_INCH / 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 8, EMU_PER_INCH * 2);
    println!("   │   │   └── {} nodes in horizontal flow", process.nodes().len());

    // Organization chart
    println!("   │   ├── Organization Chart:");
    let org = SmartArtPart::new(2, SmartArtLayout::OrgChart)
        .add_items(vec!["CEO", "CTO", "CFO", "VP Engineering", "VP Sales"]);
    println!("   │   │   └── Hierarchical structure with {} positions", org.nodes().len());

    // Cycle diagram
    println!("   │   ├── Cycle Diagram:");
    let cycle = SmartArtPart::new(3, SmartArtLayout::BasicCycle)
        .add_items(vec!["Plan", "Do", "Check", "Act"]);
    println!("   │   │   └── PDCA cycle with {} phases", cycle.nodes().len());

    // Venn diagram
    println!("   │   ├── Venn Diagram:");
    let venn = SmartArtPart::new(4, SmartArtLayout::BasicVenn)
        .add_items(vec!["Skills", "Passion", "Market Need"]);
    println!("   │   │   └── 3-circle Venn for Ikigai concept");

    // Pyramid
    println!("   │   └── Pyramid:");
    let pyramid = SmartArtPart::new(5, SmartArtLayout::BasicPyramid)
        .add_items(vec!["Self-Actualization", "Esteem", "Love/Belonging", "Safety", "Physiological"]);
    println!("   │       └── Maslow's hierarchy with {} levels", pyramid.nodes().len());

    // -------------------------------------------------------------------------
    // 3D Model Configurations
    // -------------------------------------------------------------------------
    println!("   ├── 3D Model Configurations:");
    
    // Product showcase
    println!("   │   ┌── Product Showcase:");
    let product_3d = Model3DPart::new(1, Model3DFormat::Glb, vec![0; 100])
        .camera(CameraPreset::IsometricTopUp)
        .rotation(0.0, 45.0, 0.0)
        .zoom(1.2)
        .position(EMU_PER_INCH * 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 4, EMU_PER_INCH * 4);
    println!("   │   │   ├── Camera: Isometric top-up view");
    println!("   │   │   ├── Rotation: 45° Y-axis for best angle");
    println!("   │   │   └── Zoom: 1.2x for detail");

    // Architectural model
    println!("   │   ├── Architectural Model:");
    let arch_3d = Model3DPart::new(2, Model3DFormat::Gltf, vec![0; 100])
        .camera(CameraPreset::Front)
        .rotation(15.0, -30.0, 0.0)
        .ambient_light("FFFFCC");
    println!("   │   │   ├── Camera: Front view with tilt");
    println!("   │   │   └── Ambient: Warm lighting (FFFFCC)");

    // Technical diagram
    println!("   │   └── Technical Diagram:");
    let tech_3d = Model3DPart::new(3, Model3DFormat::Obj, vec![0; 100])
        .camera(CameraPreset::IsometricOffAxis1Top)
        .rotation(0.0, 0.0, 0.0);
    println!("   │       └── Camera: Off-axis isometric for exploded view");

    // -------------------------------------------------------------------------
    // Theme + Master + Layout Combination
    // -------------------------------------------------------------------------
    println!("   ├── Theme + Master + Layout Integration:");
    
    // Corporate theme
    let mut corp_theme = ThemePart::new(1);
    corp_theme.set_name("Corporate Blue");
    corp_theme.set_major_font("Segoe UI");
    corp_theme.set_minor_font("Segoe UI Light");
    corp_theme.set_color("dk1", "000000");
    corp_theme.set_color("lt1", "FFFFFF");
    corp_theme.set_color("dk2", "1F497D");
    corp_theme.set_color("lt2", "EEECE1");
    corp_theme.set_color("accent1", "4472C4");
    corp_theme.set_color("accent2", "ED7D31");
    corp_theme.set_color("accent3", "A5A5A5");
    corp_theme.set_color("accent4", "FFC000");
    corp_theme.set_color("accent5", "5B9BD5");
    corp_theme.set_color("accent6", "70AD47");
    let theme_xml = corp_theme.to_xml()?;
    println!("   │   ├── Theme: Corporate Blue");
    println!("   │   │   ├── Fonts: Segoe UI / Segoe UI Light");
    println!("   │   │   ├── 12 color slots defined");
    println!("   │   │   └── XML: {} bytes", theme_xml.len());

    // Master with multiple layouts
    let mut corp_master = SlideMasterPart::new(1);
    corp_master.set_name("Corporate Master");
    corp_master.add_layout_rel_id("rId2"); // Title
    corp_master.add_layout_rel_id("rId3"); // Title + Content
    corp_master.add_layout_rel_id("rId4"); // Section Header
    corp_master.add_layout_rel_id("rId5"); // Two Content
    corp_master.add_layout_rel_id("rId6"); // Comparison
    corp_master.add_layout_rel_id("rId7"); // Title Only
    corp_master.add_layout_rel_id("rId8"); // Blank
    println!("   │   └── Master: {} with {} layouts linked", corp_master.name(), corp_master.layout_rel_ids().len());

    // -------------------------------------------------------------------------
    // VBA + Custom XML Integration
    // -------------------------------------------------------------------------
    println!("   ├── VBA + Custom XML Integration:");
    
    // VBA with multiple modules
    let vba_project = VbaProjectPart::new()
        .add_module(VbaModule::new("AutoRun", r#"
Sub Auto_Open()
    MsgBox "Welcome to the presentation!"
End Sub

Sub NavigateToSlide(slideNum As Integer)
    SlideShowWindows(1).View.GotoSlide slideNum
End Sub
"#))
        .add_module(VbaModule::new("DataHelpers", r#"
Function GetCustomData(key As String) As String
    ' Read from Custom XML part
    GetCustomData = ActivePresentation.CustomXMLParts(1).SelectSingleNode("//" & key).Text
End Function
"#))
        .add_module(VbaModule::class("SlideController", r#"
Private currentSlide As Integer

Public Sub NextSlide()
    currentSlide = currentSlide + 1
    NavigateToSlide currentSlide
End Sub
"#));
    println!("   │   ├── VBA Project:");
    println!("   │   │   ├── AutoRun: Auto_Open, NavigateToSlide");
    println!("   │   │   ├── DataHelpers: GetCustomData (reads Custom XML)");
    println!("   │   │   └── SlideController: Class for navigation");

    // Custom XML with structured data
    let app_config = CustomXmlPart::new(1, "presentationConfig")
        .namespace("http://company.com/pptx/config")
        .property("version", "2.1.0")
        .property("author", "Demo User")
        .property("department", "Engineering")
        .property("confidentiality", "Internal")
        .property("lastModified", "2024-01-15T10:30:00Z");
    let config_xml = app_config.to_xml()?;
    println!("   │   └── Custom XML:");
    println!("   │       ├── Namespace: http://company.com/pptx/config");
    println!("   │       ├── Properties: version, author, department, etc.");
    println!("   │       └── XML: {} bytes", config_xml.len());

    // -------------------------------------------------------------------------
    // Embedded Fonts with Variants
    // -------------------------------------------------------------------------
    println!("   ├── Embedded Font Collection:");
    let mut font_collection = EmbeddedFontCollection::new();
    font_collection.add("Corporate Sans", vec![0; 1000]);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::Bold);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::Italic);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::BoldItalic);
    font_collection.add("Code Mono", vec![0; 800]);
    let fonts_xml = font_collection.to_xml();
    println!("   │   ├── Corporate Sans: Regular, Bold, Italic, BoldItalic");
    println!("   │   ├── Code Mono: Regular");
    println!("   │   ├── Total: {} font files", font_collection.len());
    println!("   │   └── XML: {} bytes", fonts_xml.len());

    // -------------------------------------------------------------------------
    // Handout with Full Configuration
    // -------------------------------------------------------------------------
    println!("   └── Handout Master Configuration:");
    let handout = HandoutMasterPart::new()
        .layout(HandoutLayout::SlidesPerPage6)
        .header("Q1 2024 Strategy Review")
        .footer("Confidential - Internal Use Only");
    let handout_xml = handout.to_xml()?;
    println!("       ├── Layout: 6 slides per page");
    println!("       ├── Header: Q1 2024 Strategy Review");
    println!("       ├── Footer: Confidential - Internal Use Only");
    println!("       └── XML: {} bytes", handout_xml.len());

    // =========================================================================
    // Summary
    // =========================================================================
    println!("\n╔══════════════════════════════════════════════════════════════╗");
    println!("║                    Element Coverage Summary                   ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  LAYOUTS (6 types):                                          ║");
    println!("║    ✓ CenteredTitle    ✓ TitleOnly      ✓ TitleAndContent     ║");
    println!("║    ✓ TitleAndBigContent  ✓ TwoColumn   ✓ Blank               ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  TEXT FORMATTING:                                            ║");
    println!("║    ✓ Bold            ✓ Italic         ✓ Underline            ║");
    println!("║    ✓ Font Size       ✓ Font Color     ✓ Title/Content styles ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  TABLES:                                                     ║");
    println!("║    ✓ Multiple rows/columns  ✓ Bold cells  ✓ Background colors║");
    println!("║    ✓ Header styling         ✓ Position control               ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  CHARTS:                                                     ║");
    println!("║    ✓ Bar Chart       ✓ Line Chart     ✓ Pie Chart            ║");
    println!("║    ✓ Multiple series ✓ Categories                            ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  SHAPES:                                                     ║");
    println!("║    ✓ Rectangle       ✓ Ellipse        ✓ RoundedRectangle     ║");
    println!("║    ✓ Triangle        ✓ Diamond        ✓ Color fills          ║");
    println!("║    ✓ Gradient fills  ✓ Transparency   ✓ Text in shapes       ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  CONNECTORS (NEW):                                           ║");
    println!("║    ✓ Straight        ✓ Elbow          ✓ Curved               ║");
    println!("║    ✓ Arrow types     ✓ Dash styles    ✓ Line colors/widths   ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  IMAGES:                                                     ║");
    println!("║    ✓ Image placeholders  ✓ Position   ✓ Dimensions           ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  PACKAGE:                                                    ║");
    println!("║    ✓ Create PPTX     ✓ Read PPTX      ✓ Analyze contents     ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  PARTS API (NEW):                                            ║");
    println!("║    ✓ SlideLayoutPart (11 types)  ✓ SlideMasterPart           ║");
    println!("║    ✓ ThemePart (colors/fonts)    ✓ NotesSlidePart            ║");
    println!("║    ✓ AppPropertiesPart           ✓ MediaPart (10 formats)    ║");
    println!("║    ✓ TablePart (cell formatting) ✓ ContentTypesPart          ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  ELEMENTS API:                                               ║");
    println!("║    ✓ RgbColor        ✓ SchemeColor    ✓ Color enum           ║");
    println!("║    ✓ Position        ✓ Size           ✓ Transform            ║");
    println!("║    ✓ EMU conversions (inches, cm, mm, pt)                    ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  ADVANCED FEATURES (NEW):                                    ║");
    println!("║    ✓ Animation (50+ effects)  ✓ Transitions (27 types)       ║");
    println!("║    ✓ SmartArt (25 layouts)    ✓ 3D Models (GLB/GLTF/OBJ)     ║");
    println!("║    ✓ VBA Macros (.pptm)       ✓ Embedded Fonts               ║");
    println!("║    ✓ Custom XML               ✓ Handout Master               ║");
    println!("║    ✓ Table borders/alignment  ✓ Merged cells                 ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  Output: comprehensive_demo.pptx ({} slides, {} KB)         ║", 
             slides.len(), pptx_data.len() / 1024);
    println!("╚══════════════════════════════════════════════════════════════╝");

    Ok(())
}

pub fn title_size(self, size: u32) -> Self

Examples found in repository

examples/styled_presentation.rs (line 52)

fn create_large_title_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Large Title Slide")
            .title_size(60)  // 60pt title
            .content_size(16) // 16pt content
            .add_bullet("Small bullet point 1")
            .add_bullet("Small bullet point 2")
            .add_bullet("Small bullet point 3"),
        SlideContent::new("Regular Formatting")
            .add_bullet("Default 44pt title")
            .add_bullet("Default 28pt content")
            .add_bullet("Standard formatting"),
    ];

    let pptx_data = create_pptx_with_content("Large Title Example", slides)?;
    fs::write("examples/output/large_title.pptx", pptx_data)?;
    Ok(())
}

fn create_bold_content_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Bold Content Slide")
            .title_bold(true)
            .content_bold(true)  // Make bullets bold
            .add_bullet("Bold bullet point 1")
            .add_bullet("Bold bullet point 2")
            .add_bullet("Bold bullet point 3"),
        SlideContent::new("Regular Content")
            .title_bold(true)
            .content_bold(false)  // Regular bullets
            .add_bullet("Regular bullet point 1")
            .add_bullet("Regular bullet point 2"),
    ];

    let pptx_data = create_pptx_with_content("Bold Content Example", slides)?;
    fs::write("examples/output/bold_content.pptx", pptx_data)?;
    Ok(())
}

fn create_mixed_formatting_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Title Slide")
            .title_size(52)
            .title_bold(true)
            .content_size(24)
            .content_bold(false)
            .add_bullet("Large content text")
            .add_bullet("Still readable")
            .add_bullet("Professional look"),
        SlideContent::new("Compact Slide")
            .title_size(36)
            .title_bold(false)
            .content_size(18)
            .content_bold(true)
            .add_bullet("Smaller title")
            .add_bullet("Bold content")
            .add_bullet("Tight spacing"),
        SlideContent::new("Summary")
            .title_size(48)
            .title_bold(true)
            .content_size(32)
            .content_bold(true)
            .add_bullet("Large bold text")
            .add_bullet("High impact")
            .add_bullet("Great for emphasis"),
    ];

    let pptx_data = create_pptx_with_content("Mixed Formatting Example", slides)?;
    fs::write("examples/output/mixed_formatting.pptx", pptx_data)?;
    Ok(())
}

examples/test_notes.rs (line 12)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    println!("Creating test presentation with speaker notes...");
    
    let slides = vec![
        SlideContent::new("Slide 1 - With Notes")
            .layout(SlideLayout::CenteredTitle)
            .title_size(54)
            .title_bold(true)
            .notes("This is a speaker note for slide 1. It should appear in presenter view."),
        
        SlideContent::new("Slide 2 - Also With Notes")
            .add_bullet("Bullet point 1")
            .add_bullet("Bullet point 2")
            .add_bullet("Bullet point 3")
            .notes("Notes for slide 2 with bullet points."),
        
        SlideContent::new("Slide 3 - No Notes")
            .add_bullet("This slide has no notes"),
        
        SlideContent::new("Slide 4 - More Notes")
            .layout(SlideLayout::TwoColumn)
            .add_bullet("Left 1")
            .add_bullet("Left 2")
            .add_bullet("Right 1")
            .add_bullet("Right 2")
            .notes("Two column layout with speaker notes."),
    ];
    
    let pptx_data = create_pptx_with_content("Test Notes", slides)?;
    fs::write("test_notes.pptx", &pptx_data)?;
    println!("Created test_notes.pptx ({} bytes)", pptx_data.len());
    println!("\nOpen in PowerPoint and check presenter view for notes!");
    
    Ok(())
}

examples/text_styling_complete.rs (line 110)

fn create_combined_styling_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Bold & Italic & Red")
            .title_bold(true)
            .title_italic(true)
            .title_color("FF0000")
            .title_size(52)
            .add_bullet("Regular content"),
        SlideContent::new("Underlined Blue Content")
            .content_underline(true)
            .content_color("0000FF")
            .content_bold(true)
            .add_bullet("Bold, underlined, blue bullet")
            .add_bullet("Multiple effects applied"),
        SlideContent::new("Mixed Effects")
            .title_italic(true)
            .title_color("FF6600")
            .content_bold(true)
            .content_underline(true)
            .content_color("0066FF")
            .add_bullet("Title: italic, orange")
            .add_bullet("Content: bold, underlined, blue"),
        SlideContent::new("Professional Look")
            .title_bold(true)
            .title_size(48)
            .title_color("003366")
            .content_size(24)
            .add_bullet("Clean, professional styling")
            .add_bullet("Dark blue title with bold")
            .add_bullet("Larger content text"),
    ];

    let pptx_data = create_pptx_with_content("Combined Styling", slides)?;
    fs::write("examples/output/combined_styling.pptx", pptx_data)?;
    Ok(())
}

fn create_professional_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Company Presentation")
            .title_bold(true)
            .title_size(56)
            .title_color("003366")
            .content_size(32)
            .add_bullet("2025 Annual Review"),
        SlideContent::new("Key Highlights")
            .title_bold(true)
            .title_color("003366")
            .content_bold(true)
            .content_color("0066CC")
            .add_bullet("Revenue growth: +25%")
            .add_bullet("Market expansion: 3 new regions")
            .add_bullet("Team growth: +50 employees"),
        SlideContent::new("Strategic Initiatives")
            .title_italic(true)
            .title_color("FF6600")
            .content_underline(true)
            .add_bullet("Digital transformation")
            .add_bullet("Customer experience improvement")
            .add_bullet("Sustainability focus"),
        SlideContent::new("Q1 2025 Goals")
            .title_bold(true)
            .title_underline(true)
            .title_color("003366")
            .content_bold(true)
            .add_bullet("Launch new product line")
            .add_bullet("Expand to 5 new markets")
            .add_bullet("Achieve 30% revenue growth"),
        SlideContent::new("Thank You")
            .title_bold(true)
            .title_size(60)
            .title_color("003366")
            .content_italic(true)
            .content_size(28)
            .add_bullet("Questions & Discussion"),
    ];

    let pptx_data = create_pptx_with_content("Professional Presentation", slides)?;
    fs::write("examples/output/professional.pptx", pptx_data)?;
    Ok(())
}

examples/alignment_test.rs (line 23)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    println!("=== Alignment Test: ppt-rs vs python-pptx ===\n");
    
    // Create output directory
    fs::create_dir_all("examples/output")?;
    
    // Create slides matching the reference presentation structure
    let slides = vec![
        // Slide 1: Title Slide
        SlideContent::new("Alignment Test Presentation")
            .title_size(54)
            .title_bold(true)
            .title_color("003366"),  // RGB(0, 51, 102)
        
        // Slide 2: Content Slide
        SlideContent::new("Shapes and Formatting")
            .title_size(44)
            .title_bold(true)
            .title_color("003366")
            .add_bullet("Text formatting (bold, colors, sizes)")
            .add_bullet("Shape creation and positioning")
            .add_bullet("Multiple slides and layouts"),
    ];
    
    // Generate PPTX
    let pptx_data = create_pptx_with_content(
        "Alignment Test Presentation",
        slides,
    )?;
    
    // Write to file
    let output_path = "examples/output/alignment_test_ppt_rs.pptx";
    fs::write(output_path, pptx_data)?;
    
    println!("✓ Created presentation: {output_path}");
    println!("  - Title: Alignment Test Presentation");
    println!("  - Slides: 2");
    println!("\nNext steps:");
    println!("  1. Generate reference: python3 scripts/generate_reference.py");
    println!("  2. Compare files: python3 scripts/compare_pptx.py");
    
    Ok(())
}

examples/table_generation.rs (line 164)

fn create_data_table_example() -> Result<(), Box<dyn std::error::Error>> {
    let header_cells = vec![
        TableCell::new("Product").bold().background_color("1F497D"),
        TableCell::new("Revenue").bold().background_color("1F497D"),
        TableCell::new("Growth").bold().background_color("1F497D"),
    ];
    let header_row = TableRow::new(header_cells);

    let data_rows = vec![
        TableRow::new(vec![
            TableCell::new("Product A"),
            TableCell::new("$100K"),
            TableCell::new("+15%"),
        ]),
        TableRow::new(vec![
            TableCell::new("Product B"),
            TableCell::new("$150K"),
            TableCell::new("+22%"),
        ]),
        TableRow::new(vec![
            TableCell::new("Product C"),
            TableCell::new("$200K"),
            TableCell::new("+18%"),
        ]),
    ];

    let table = Table::new(
        vec![vec![header_row], data_rows].concat(),
        vec![2000000, 2000000, 1500000],
        457200,
        1400000,
    );

    let slides = vec![
        SlideContent::new("Sales Data Table")
            .title_bold(true)
            .title_size(48)
            .add_bullet("Quarterly sales figures"),
        SlideContent::new("Q1 2025 Sales")
            .table(table),
        SlideContent::new("Summary")
            .content_bold(true)
            .add_bullet("Total Revenue: $450K")
            .add_bullet("Average Growth: +18.3%")
            .add_bullet("Best Performer: Product C"),
    ];

    let pptx_data = create_pptx_with_content("Sales Data", slides)?;
    fs::write("examples/output/data_table.pptx", pptx_data)?;
    Ok(())
}

examples/layout_demo.rs (line 12)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        // Slide 1: Title Only
        SlideContent::new("Welcome to Layout Demo")
            .layout(SlideLayout::TitleOnly),

        // Slide 2: Centered Title (good for cover slides)
        SlideContent::new("Centered Title Slide")
            .layout(SlideLayout::CenteredTitle)
            .title_size(60)
            .title_color("4F81BD"),

        // Slide 3: Title and Content (standard layout)
        SlideContent::new("Standard Layout")
            .add_bullet("Point 1: Title at top")
            .add_bullet("Point 2: Content below")
            .add_bullet("Point 3: Most common layout")
            .layout(SlideLayout::TitleAndContent),

        // Slide 4: Title and Big Content
        SlideContent::new("Big Content Area")
            .add_bullet("More space for content")
            .add_bullet("Smaller title area")
            .add_bullet("Good for detailed slides")
            .add_bullet("Maximizes content space")
            .layout(SlideLayout::TitleAndBigContent),

        // Slide 5: Two Column Layout
        SlideContent::new("Two Column Layout")
            .add_bullet("Left column content")
            .add_bullet("Organized side by side")
            .add_bullet("Great for comparisons")
            .layout(SlideLayout::TwoColumn),

        // Slide 6: Blank Slide
        SlideContent::new("")
            .layout(SlideLayout::Blank),

        // Slide 7: Summary with different formatting
        SlideContent::new("Summary")
            .title_size(48)
            .title_bold(true)
            .title_color("C0504D")
            .add_bullet("Layout types implemented:")
            .add_bullet("• TitleOnly - Just title")
            .add_bullet("• CenteredTitle - Title centered")
            .add_bullet("• TitleAndContent - Standard")
            .add_bullet("• TitleAndBigContent - Large content")
            .add_bullet("• TwoColumn - Side by side")
            .add_bullet("• Blank - Empty slide")
            .content_size(20)
            .layout(SlideLayout::TitleAndContent),
    ];

    let pptx_data = create_pptx_with_content("Layout Demo Presentation", slides)?;
    std::fs::write("layout_demo.pptx", pptx_data)?;
    println!("✓ Created layout_demo.pptx with 7 slides demonstrating different layouts");

    Ok(())
}

Additional examples can be found in:

• examples/comprehensive_demo.rs

pub fn content_size(self, size: u32) -> Self

Examples found in repository

examples/styled_presentation.rs (line 53)

fn create_large_title_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Large Title Slide")
            .title_size(60)  // 60pt title
            .content_size(16) // 16pt content
            .add_bullet("Small bullet point 1")
            .add_bullet("Small bullet point 2")
            .add_bullet("Small bullet point 3"),
        SlideContent::new("Regular Formatting")
            .add_bullet("Default 44pt title")
            .add_bullet("Default 28pt content")
            .add_bullet("Standard formatting"),
    ];

    let pptx_data = create_pptx_with_content("Large Title Example", slides)?;
    fs::write("examples/output/large_title.pptx", pptx_data)?;
    Ok(())
}

fn create_bold_content_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Bold Content Slide")
            .title_bold(true)
            .content_bold(true)  // Make bullets bold
            .add_bullet("Bold bullet point 1")
            .add_bullet("Bold bullet point 2")
            .add_bullet("Bold bullet point 3"),
        SlideContent::new("Regular Content")
            .title_bold(true)
            .content_bold(false)  // Regular bullets
            .add_bullet("Regular bullet point 1")
            .add_bullet("Regular bullet point 2"),
    ];

    let pptx_data = create_pptx_with_content("Bold Content Example", slides)?;
    fs::write("examples/output/bold_content.pptx", pptx_data)?;
    Ok(())
}

fn create_mixed_formatting_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Title Slide")
            .title_size(52)
            .title_bold(true)
            .content_size(24)
            .content_bold(false)
            .add_bullet("Large content text")
            .add_bullet("Still readable")
            .add_bullet("Professional look"),
        SlideContent::new("Compact Slide")
            .title_size(36)
            .title_bold(false)
            .content_size(18)
            .content_bold(true)
            .add_bullet("Smaller title")
            .add_bullet("Bold content")
            .add_bullet("Tight spacing"),
        SlideContent::new("Summary")
            .title_size(48)
            .title_bold(true)
            .content_size(32)
            .content_bold(true)
            .add_bullet("Large bold text")
            .add_bullet("High impact")
            .add_bullet("Great for emphasis"),
    ];

    let pptx_data = create_pptx_with_content("Mixed Formatting Example", slides)?;
    fs::write("examples/output/mixed_formatting.pptx", pptx_data)?;
    Ok(())
}

examples/text_styling_complete.rs (line 130)

fn create_combined_styling_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Bold & Italic & Red")
            .title_bold(true)
            .title_italic(true)
            .title_color("FF0000")
            .title_size(52)
            .add_bullet("Regular content"),
        SlideContent::new("Underlined Blue Content")
            .content_underline(true)
            .content_color("0000FF")
            .content_bold(true)
            .add_bullet("Bold, underlined, blue bullet")
            .add_bullet("Multiple effects applied"),
        SlideContent::new("Mixed Effects")
            .title_italic(true)
            .title_color("FF6600")
            .content_bold(true)
            .content_underline(true)
            .content_color("0066FF")
            .add_bullet("Title: italic, orange")
            .add_bullet("Content: bold, underlined, blue"),
        SlideContent::new("Professional Look")
            .title_bold(true)
            .title_size(48)
            .title_color("003366")
            .content_size(24)
            .add_bullet("Clean, professional styling")
            .add_bullet("Dark blue title with bold")
            .add_bullet("Larger content text"),
    ];

    let pptx_data = create_pptx_with_content("Combined Styling", slides)?;
    fs::write("examples/output/combined_styling.pptx", pptx_data)?;
    Ok(())
}

fn create_professional_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Company Presentation")
            .title_bold(true)
            .title_size(56)
            .title_color("003366")
            .content_size(32)
            .add_bullet("2025 Annual Review"),
        SlideContent::new("Key Highlights")
            .title_bold(true)
            .title_color("003366")
            .content_bold(true)
            .content_color("0066CC")
            .add_bullet("Revenue growth: +25%")
            .add_bullet("Market expansion: 3 new regions")
            .add_bullet("Team growth: +50 employees"),
        SlideContent::new("Strategic Initiatives")
            .title_italic(true)
            .title_color("FF6600")
            .content_underline(true)
            .add_bullet("Digital transformation")
            .add_bullet("Customer experience improvement")
            .add_bullet("Sustainability focus"),
        SlideContent::new("Q1 2025 Goals")
            .title_bold(true)
            .title_underline(true)
            .title_color("003366")
            .content_bold(true)
            .add_bullet("Launch new product line")
            .add_bullet("Expand to 5 new markets")
            .add_bullet("Achieve 30% revenue growth"),
        SlideContent::new("Thank You")
            .title_bold(true)
            .title_size(60)
            .title_color("003366")
            .content_italic(true)
            .content_size(28)
            .add_bullet("Questions & Discussion"),
    ];

    let pptx_data = create_pptx_with_content("Professional Presentation", slides)?;
    fs::write("examples/output/professional.pptx", pptx_data)?;
    Ok(())
}

examples/layout_demo.rs (line 53)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        // Slide 1: Title Only
        SlideContent::new("Welcome to Layout Demo")
            .layout(SlideLayout::TitleOnly),

        // Slide 2: Centered Title (good for cover slides)
        SlideContent::new("Centered Title Slide")
            .layout(SlideLayout::CenteredTitle)
            .title_size(60)
            .title_color("4F81BD"),

        // Slide 3: Title and Content (standard layout)
        SlideContent::new("Standard Layout")
            .add_bullet("Point 1: Title at top")
            .add_bullet("Point 2: Content below")
            .add_bullet("Point 3: Most common layout")
            .layout(SlideLayout::TitleAndContent),

        // Slide 4: Title and Big Content
        SlideContent::new("Big Content Area")
            .add_bullet("More space for content")
            .add_bullet("Smaller title area")
            .add_bullet("Good for detailed slides")
            .add_bullet("Maximizes content space")
            .layout(SlideLayout::TitleAndBigContent),

        // Slide 5: Two Column Layout
        SlideContent::new("Two Column Layout")
            .add_bullet("Left column content")
            .add_bullet("Organized side by side")
            .add_bullet("Great for comparisons")
            .layout(SlideLayout::TwoColumn),

        // Slide 6: Blank Slide
        SlideContent::new("")
            .layout(SlideLayout::Blank),

        // Slide 7: Summary with different formatting
        SlideContent::new("Summary")
            .title_size(48)
            .title_bold(true)
            .title_color("C0504D")
            .add_bullet("Layout types implemented:")
            .add_bullet("• TitleOnly - Just title")
            .add_bullet("• CenteredTitle - Title centered")
            .add_bullet("• TitleAndContent - Standard")
            .add_bullet("• TitleAndBigContent - Large content")
            .add_bullet("• TwoColumn - Side by side")
            .add_bullet("• Blank - Empty slide")
            .content_size(20)
            .layout(SlideLayout::TitleAndContent),
    ];

    let pptx_data = create_pptx_with_content("Layout Demo Presentation", slides)?;
    std::fs::write("layout_demo.pptx", pptx_data)?;
    println!("✓ Created layout_demo.pptx with 7 slides demonstrating different layouts");

    Ok(())
}

examples/comprehensive_demo.rs (line 120)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    println!("╔══════════════════════════════════════════════════════════════╗");
    println!("║       PPTX-RS Element Showcase - Complete Coverage           ║");
    println!("╚══════════════════════════════════════════════════════════════╝\n");

    let mut slides = Vec::new();

    // =========================================================================
    // SLIDE 1: CenteredTitle Layout + Title Formatting
    // =========================================================================
    println!("📐 Slide 1: CenteredTitle Layout + Title Formatting");
    slides.push(
        SlideContent::new("PPTX-RS Element Showcase")
            .layout(SlideLayout::CenteredTitle)
            .title_size(54)
            .title_bold(true)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 2: TitleOnly Layout
    // =========================================================================
    println!("📐 Slide 2: TitleOnly Layout");
    slides.push(
        SlideContent::new("Section: Slide Layouts")
            .layout(SlideLayout::TitleOnly)
            .title_size(48)
            .title_bold(true)
            .title_color("C0504D")
    );

    // =========================================================================
    // SLIDE 3: TitleAndContent Layout + All Text Formatting
    // =========================================================================
    println!("📝 Slide 3: TitleAndContent + Text Formatting");
    slides.push(
        SlideContent::new("Text Formatting Options")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .title_italic(true)
            .title_underline(true)
            .title_size(44)
            .add_bullet("Normal text (default)")
            .add_bullet("Bold content text")
            .add_bullet("Italic content text")
            .add_bullet("Underlined content")
            .add_bullet("Custom font size (28pt)")
            .add_bullet("Custom color (#4F81BD)")
            .content_bold(true)
            .content_italic(true)
            .content_underline(true)
            .content_size(28)
            .content_color("4F81BD")
    );

    // =========================================================================
    // SLIDE 4: TitleAndBigContent Layout
    // =========================================================================
    println!("📐 Slide 4: TitleAndBigContent Layout");
    slides.push(
        SlideContent::new("Key Highlights")
            .layout(SlideLayout::TitleAndBigContent)
            .title_color("1F497D")
            .add_bullet("Large content area for emphasis")
            .add_bullet("Perfect for key messages")
            .add_bullet("Smaller title, bigger content")
            .content_bold(true)
            .content_size(32)
    );

    // =========================================================================
    // SLIDE 5: TwoColumn Layout
    // =========================================================================
    println!("📐 Slide 5: TwoColumn Layout");
    slides.push(
        SlideContent::new("Two Column Comparison")
            .layout(SlideLayout::TwoColumn)
            .title_color("1F497D")
            .add_bullet("Left Column Item 1")
            .add_bullet("Left Column Item 2")
            .add_bullet("Left Column Item 3")
            .add_bullet("Right Column Item 1")
            .add_bullet("Right Column Item 2")
            .add_bullet("Right Column Item 3")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 6: Blank Layout
    // =========================================================================
    println!("📐 Slide 6: Blank Layout");
    slides.push(
        SlideContent::new("")
            .layout(SlideLayout::Blank)
    );

    // =========================================================================
    // SLIDE 7: Table with All Cell Styling Options
    // =========================================================================
    println!("📊 Slide 7: Table with Cell Styling");
    let styled_table = TableBuilder::new(vec![1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Header 1").bold().background_color("1F497D"),
            TableCell::new("Header 2").bold().background_color("4F81BD"),
            TableCell::new("Header 3").bold().background_color("8064A2"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Bold Cell").bold(),
            TableCell::new("Normal Cell"),
            TableCell::new("Colored").background_color("9BBB59"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Red BG").background_color("C0504D"),
            TableCell::new("Green BG").background_color("9BBB59"),
            TableCell::new("Blue BG").background_color("4F81BD"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Row 3 Col 1"),
            TableCell::new("Row 3 Col 2"),
            TableCell::new("Row 3 Col 3").bold().background_color("F79646"),
        ]))
        .position(500000, 1800000)
        .build();
    
    slides.push(
        SlideContent::new("Table with Cell Styling")
            .table(styled_table)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 8: Charts (Bar, Line, Pie)
    // =========================================================================
    println!("📈 Slide 8: Chart Types");
    
    // Create chart data structures (for demonstration)
    let _bar_chart = ChartBuilder::new("Sales by Region", ChartType::Bar)
        .categories(vec!["North", "South", "East", "West"])
        .add_series(ChartSeries::new("2023", vec![100.0, 80.0, 120.0, 90.0]))
        .add_series(ChartSeries::new("2024", vec![120.0, 95.0, 140.0, 110.0]))
        .build();
    
    let _line_chart = ChartBuilder::new("Monthly Trend", ChartType::Line)
        .categories(vec!["Jan", "Feb", "Mar", "Apr", "May", "Jun"])
        .add_series(ChartSeries::new("Revenue", vec![10.0, 12.0, 15.0, 14.0, 18.0, 22.0]))
        .build();
    
    let _pie_chart = ChartBuilder::new("Market Share", ChartType::Pie)
        .categories(vec!["Product A", "Product B", "Product C", "Others"])
        .add_series(ChartSeries::new("Share", vec![40.0, 30.0, 20.0, 10.0]))
        .build();
    
    slides.push(
        SlideContent::new("Chart Types: Bar, Line, Pie")
            .with_chart()
            .title_color("1F497D")
            .add_bullet("Bar Chart: Compare categories")
            .add_bullet("Line Chart: Show trends over time")
            .add_bullet("Pie Chart: Show proportions")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 9: Shapes with Different Fills
    // =========================================================================
    println!("🔷 Slide 9: Shapes with Fills");
    
    let rect = Shape::new(ShapeType::Rectangle, 500000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("4F81BD"))
        .with_text("Rectangle");
    
    let ellipse = Shape::new(ShapeType::Ellipse, 3000000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("9BBB59"))
        .with_text("Ellipse");
    
    let rounded = Shape::new(ShapeType::RoundedRectangle, 5500000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("C0504D"))
        .with_text("Rounded");
    
    let triangle = Shape::new(ShapeType::Triangle, 1500000, 3000000, 1500000, 1200000)
        .with_fill(ShapeFill::new("8064A2"))
        .with_text("Triangle");
    
    let diamond = Shape::new(ShapeType::Diamond, 4000000, 3000000, 1500000, 1200000)
        .with_fill(ShapeFill::new("F79646"))
        .with_text("Diamond");
    
    slides.push(
        SlideContent::new("Shape Types with Color Fills")
            .add_shape(rect)
            .add_shape(ellipse)
            .add_shape(rounded)
            .add_shape(triangle)
            .add_shape(diamond)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 10: Gradient Fills (NEW)
    // =========================================================================
    println!("🌈 Slide 10: Gradient Fills");
    
    // Horizontal gradient
    let gradient_h = Shape::new(ShapeType::Rectangle, 500000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("1565C0", "42A5F5", GradientDirection::Horizontal))
        .with_text("Horizontal");
    
    // Vertical gradient
    let gradient_v = Shape::new(ShapeType::Rectangle, 3200000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("2E7D32", "81C784", GradientDirection::Vertical))
        .with_text("Vertical");
    
    // Diagonal gradient
    let gradient_d = Shape::new(ShapeType::RoundedRectangle, 5900000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("C62828", "EF9A9A", GradientDirection::DiagonalDown))
        .with_text("Diagonal");
    
    // Three-color gradient
    let gradient_3 = Shape::new(ShapeType::Ellipse, 1800000, 3200000, 2500000, 1200000)
        .with_gradient(GradientFill::three_color("FF6F00", "FFC107", "FFEB3B", GradientDirection::Horizontal))
        .with_text("3-Color");
    
    // Custom angle gradient
    let gradient_angle = Shape::new(ShapeType::RoundedRectangle, 4800000, 3200000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("7B1FA2", "E1BEE7", GradientDirection::Angle(135)))
        .with_text("135° Angle");
    
    slides.push(
        SlideContent::new("Gradient Fills - Multiple Directions")
            .add_shape(gradient_h)
            .add_shape(gradient_v)
            .add_shape(gradient_d)
            .add_shape(gradient_3)
            .add_shape(gradient_angle)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 11: Transparency (NEW)
    // =========================================================================
    println!("👻 Slide 11: Transparency Effects");
    
    // Base shape (fully opaque)
    let base = Shape::new(ShapeType::Rectangle, 1000000, 1800000, 3000000, 2000000)
        .with_fill(ShapeFill::new("1565C0"))
        .with_text("Base (100%)");
    
    // 25% transparent overlay
    let trans_25 = Shape::new(ShapeType::Rectangle, 2000000, 2200000, 2500000, 1500000)
        .with_fill(ShapeFill::new("F44336").with_transparency(25))
        .with_line(ShapeLine::new("B71C1C", 25400))
        .with_text("25% Transparent");
    
    // 50% transparent overlay
    let trans_50 = Shape::new(ShapeType::Ellipse, 4500000, 1800000, 2500000, 2000000)
        .with_fill(ShapeFill::new("4CAF50").with_transparency(50))
        .with_line(ShapeLine::new("1B5E20", 25400))
        .with_text("50% Transparent");
    
    // 75% transparent overlay
    let trans_75 = Shape::new(ShapeType::RoundedRectangle, 5500000, 2500000, 2500000, 1500000)
        .with_fill(ShapeFill::new("FF9800").with_transparency(75))
        .with_line(ShapeLine::new("E65100", 25400))
        .with_text("75% Transparent");
    
    slides.push(
        SlideContent::new("Transparency Effects - Overlapping Shapes")
            .add_shape(base)
            .add_shape(trans_25)
            .add_shape(trans_50)
            .add_shape(trans_75)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 12: Styled Connectors (NEW)
    // =========================================================================
    println!("🔗 Slide 12: Styled Connectors");
    
    // Create shapes to connect
    let box1 = Shape::new(ShapeType::RoundedRectangle, 500000, 1800000, 1800000, 800000)
        .with_id(100)
        .with_fill(ShapeFill::new("1565C0"))
        .with_text("Start");
    
    let box2 = Shape::new(ShapeType::RoundedRectangle, 3500000, 1800000, 1800000, 800000)
        .with_id(101)
        .with_fill(ShapeFill::new("2E7D32"))
        .with_text("Process");
    
    let box3 = Shape::new(ShapeType::RoundedRectangle, 6500000, 1800000, 1800000, 800000)
        .with_id(102)
        .with_fill(ShapeFill::new("C62828"))
        .with_text("End");
    
    // Straight connector with arrow
    let conn1 = Connector::straight(2300000, 2200000, 3500000, 2200000)
        .with_line(ConnectorLine::new("1565C0", 25400))
        .with_end_arrow(ArrowType::Triangle)
        .with_arrow_size(ArrowSize::Large);
    
    // Elbow connector with stealth arrow
    let conn2 = Connector::elbow(5300000, 2200000, 6500000, 2200000)
        .with_line(ConnectorLine::new("2E7D32", 38100).with_dash(LineDash::Dash))
        .with_end_arrow(ArrowType::Stealth)
        .with_arrow_size(ArrowSize::Medium);
    
    // Curved connector examples
    let box4 = Shape::new(ShapeType::Ellipse, 1000000, 3200000, 1500000, 800000)
        .with_id(103)
        .with_fill(ShapeFill::new("7B1FA2"))
        .with_text("A");
    
    let box5 = Shape::new(ShapeType::Ellipse, 4000000, 3200000, 1500000, 800000)
        .with_id(104)
        .with_fill(ShapeFill::new("00838F"))
        .with_text("B");
    
    let box6 = Shape::new(ShapeType::Ellipse, 7000000, 3200000, 1500000, 800000)
        .with_id(105)
        .with_fill(ShapeFill::new("EF6C00"))
        .with_text("C");
    
    // Curved connector with diamond arrow
    let conn3 = Connector::curved(2500000, 3600000, 4000000, 3600000)
        .with_line(ConnectorLine::new("7B1FA2", 19050).with_dash(LineDash::DashDot))
        .with_arrows(ArrowType::Oval, ArrowType::Diamond);
    
    // Dotted connector
    let conn4 = Connector::straight(5500000, 3600000, 7000000, 3600000)
        .with_line(ConnectorLine::new("00838F", 12700).with_dash(LineDash::Dot))
        .with_end_arrow(ArrowType::Open);
    
    slides.push(
        SlideContent::new("Styled Connectors - Types, Arrows, Dashes")
            .add_shape(box1)
            .add_shape(box2)
            .add_shape(box3)
            .add_shape(box4)
            .add_shape(box5)
            .add_shape(box6)
            .add_connector(conn1)
            .add_connector(conn2)
            .add_connector(conn3)
            .add_connector(conn4)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 13: Images
    // =========================================================================
    println!("🖼️  Slide 13: Image Placeholders");
    
    let img1 = Image::new("logo.png", 2500000, 1800000, "png")
        .position(500000, 1600000);
    let img2 = Image::new("photo.jpg", 2500000, 1800000, "jpg")
        .position(3500000, 1600000);
    let img3 = Image::new("diagram.png", 2000000, 1800000, "png")
        .position(6500000, 1600000);
    
    slides.push(
        SlideContent::new("Image Placeholders")
            .add_image(img1)
            .add_image(img2)
            .add_image(img3)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 11: Advanced Table with Borders & Alignment (NEW)
    // =========================================================================
    println!("📊 Slide 11: Advanced Table (borders, alignment, merged cells)");
    
    // Build advanced table using generator's TableBuilder with alignment
    let advanced_table = TableBuilder::new(vec![2000000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2024 Financial Report").bold().background_color("1F4E79").text_color("FFFFFF").align_center().font_size(14),
            TableCell::new("").background_color("1F4E79"),
            TableCell::new("").background_color("1F4E79"),
            TableCell::new("").background_color("1F4E79"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Category").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Revenue").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Expenses").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Profit").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Product Sales").text_color("000000").align_left(),
            TableCell::new("$1,250,000").text_color("2E7D32").align_right(),
            TableCell::new("$450,000").text_color("C62828").align_right(),
            TableCell::new("$800,000").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Services").text_color("000000").align_left(),
            TableCell::new("$890,000").text_color("2E7D32").align_right(),
            TableCell::new("$320,000").text_color("C62828").align_right(),
            TableCell::new("$570,000").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Total").bold().background_color("E7E6E6").text_color("000000").align_left(),
            TableCell::new("$2,140,000").bold().background_color("E7E6E6").text_color("000000").align_right(),
            TableCell::new("$770,000").bold().background_color("E7E6E6").text_color("000000").align_right(),
            TableCell::new("$1,370,000").bold().background_color("C6EFCE").text_color("006100").align_right(),
        ]))
        .position(300000, 1600000)
        .build();
    
    slides.push(
        SlideContent::new("Financial Report - Advanced Table")
            .table(advanced_table)
            .title_color("1F4E79")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 12: Comparison Matrix Table (NEW)
    // =========================================================================
    println!("📊 Slide 12: Comparison Matrix Table");
    
    let comparison_table = TableBuilder::new(vec![2000000, 1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Feature").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Basic").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Pro").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Enterprise").bold().background_color("4472C4").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Storage").text_color("000000"),
            TableCell::new("5 GB").text_color("000000"),
            TableCell::new("50 GB").text_color("000000"),
            TableCell::new("Unlimited").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Users").text_color("000000"),
            TableCell::new("1").text_color("000000"),
            TableCell::new("10").text_color("000000"),
            TableCell::new("Unlimited").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Support").text_color("000000"),
            TableCell::new("Email").text_color("000000"),
            TableCell::new("24/7 Chat").text_color("000000"),
            TableCell::new("Dedicated").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("API Access").text_color("000000"),
            TableCell::new("No").text_color("C62828"),
            TableCell::new("Yes").text_color("2E7D32"),
            TableCell::new("Yes + Priority").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Price/month").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$9").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$29").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$99").bold().background_color("F2F2F2").text_color("000000"),
        ]))
        .position(500000, 1600000)
        .build();
    
    slides.push(
        SlideContent::new("Pricing Comparison Matrix")
            .table(comparison_table)
            .title_color("4472C4")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 13: Process Flow with Shapes (NEW - SmartArt-like)
    // =========================================================================
    println!("🔷 Slide 13: Process Flow (SmartArt-style)");
    
    // Create process flow using shapes
    let step1 = Shape::new(ShapeType::RoundedRectangle, 300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("1. Research");
    let arrow1 = Shape::new(ShapeType::RightArrow, 1800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step2 = Shape::new(ShapeType::RoundedRectangle, 2300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("2. Design");
    let arrow2 = Shape::new(ShapeType::RightArrow, 3800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step3 = Shape::new(ShapeType::RoundedRectangle, 4300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("3. Develop");
    let arrow3 = Shape::new(ShapeType::RightArrow, 5800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step4 = Shape::new(ShapeType::RoundedRectangle, 6300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("5B9BD5"))
        .with_text("4. Deploy");
    
    slides.push(
        SlideContent::new("Development Process Flow")
            .add_shape(step1)
            .add_shape(arrow1)
            .add_shape(step2)
            .add_shape(arrow2)
            .add_shape(step3)
            .add_shape(arrow3)
            .add_shape(step4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 14: Organization Chart with Shapes (NEW)
    // =========================================================================
    println!("🔷 Slide 14: Organization Chart");
    
    // CEO at top
    let ceo = Shape::new(ShapeType::RoundedRectangle, 3500000, 1400000, 2000000, 600000)
        .with_fill(ShapeFill::new("1F4E79"))
        .with_text("CEO");
    
    // Vertical line from CEO
    let line1 = Shape::new(ShapeType::Rectangle, 4450000, 2000000, 100000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // Horizontal connector
    let hline = Shape::new(ShapeType::Rectangle, 1950000, 2400000, 5100000, 50000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // CTO, CFO, COO
    let cto = Shape::new(ShapeType::RoundedRectangle, 1000000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("CTO");
    let cfo = Shape::new(ShapeType::RoundedRectangle, 3600000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("CFO");
    let coo = Shape::new(ShapeType::RoundedRectangle, 6200000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("COO");
    
    // Vertical lines to departments
    let vline1 = Shape::new(ShapeType::Rectangle, 1850000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let vline2 = Shape::new(ShapeType::Rectangle, 4450000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let vline3 = Shape::new(ShapeType::Rectangle, 7050000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // Teams under CTO
    let eng = Shape::new(ShapeType::Rectangle, 500000, 3300000, 1200000, 400000)
        .with_fill(ShapeFill::new("BDD7EE"))
        .with_text("Engineering");
    let product = Shape::new(ShapeType::Rectangle, 1800000, 3300000, 1200000, 400000)
        .with_fill(ShapeFill::new("BDD7EE"))
        .with_text("Product");
    
    slides.push(
        SlideContent::new("Organization Structure")
            .add_shape(ceo)
            .add_shape(line1)
            .add_shape(hline)
            .add_shape(cto)
            .add_shape(cfo)
            .add_shape(coo)
            .add_shape(vline1)
            .add_shape(vline2)
            .add_shape(vline3)
            .add_shape(eng)
            .add_shape(product)
            .title_color("1F4E79")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 15: PDCA Cycle Diagram (NEW)
    // =========================================================================
    println!("🔷 Slide 15: PDCA Cycle Diagram");
    
    // Four quadrants for PDCA
    let plan = Shape::new(ShapeType::RoundedRectangle, 1500000, 1600000, 2500000, 1500000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("PLAN\n\nDefine goals\nand strategy");
    let do_box = Shape::new(ShapeType::RoundedRectangle, 4500000, 1600000, 2500000, 1500000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("DO\n\nImplement\nthe plan");
    let check = Shape::new(ShapeType::RoundedRectangle, 4500000, 3300000, 2500000, 1500000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("CHECK\n\nMeasure\nresults");
    let act = Shape::new(ShapeType::RoundedRectangle, 1500000, 3300000, 2500000, 1500000)
        .with_fill(ShapeFill::new("FFC000"))
        .with_text("ACT\n\nAdjust and\nimprove");
    
    // Arrows between quadrants
    let arr1 = Shape::new(ShapeType::RightArrow, 4100000, 2100000, 300000, 300000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr2 = Shape::new(ShapeType::DownArrow, 5600000, 3200000, 300000, 200000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr3 = Shape::new(ShapeType::LeftArrow, 4100000, 3800000, 300000, 300000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr4 = Shape::new(ShapeType::UpArrow, 2600000, 3200000, 300000, 200000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    slides.push(
        SlideContent::new("PDCA Continuous Improvement Cycle")
            .add_shape(plan)
            .add_shape(do_box)
            .add_shape(check)
            .add_shape(act)
            .add_shape(arr1)
            .add_shape(arr2)
            .add_shape(arr3)
            .add_shape(arr4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 16: Pyramid Diagram (Maslow's Hierarchy) (NEW)
    // =========================================================================
    println!("🔷 Slide 16: Pyramid Diagram");
    
    // Build pyramid from bottom to top
    let level5 = Shape::new(ShapeType::Trapezoid, 500000, 4000000, 8000000, 600000)
        .with_fill(ShapeFill::new("C00000"))
        .with_text("Physiological Needs - Food, Water, Shelter");
    let level4 = Shape::new(ShapeType::Trapezoid, 1000000, 3400000, 7000000, 600000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Safety Needs - Security, Stability");
    let level3 = Shape::new(ShapeType::Trapezoid, 1500000, 2800000, 6000000, 600000)
        .with_fill(ShapeFill::new("FFC000"))
        .with_text("Love & Belonging - Relationships");
    let level2 = Shape::new(ShapeType::Trapezoid, 2000000, 2200000, 5000000, 600000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Esteem - Achievement, Respect");
    let level1 = Shape::new(ShapeType::Triangle, 2500000, 1500000, 4000000, 700000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Self-Actualization");
    
    slides.push(
        SlideContent::new("Maslow's Hierarchy of Needs")
            .add_shape(level5)
            .add_shape(level4)
            .add_shape(level3)
            .add_shape(level2)
            .add_shape(level1)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 17: Venn Diagram (NEW)
    // =========================================================================
    println!("🔷 Slide 17: Venn Diagram");
    
    // Three overlapping circles
    let circle1 = Shape::new(ShapeType::Ellipse, 1500000, 1800000, 3000000, 3000000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Skills");
    let circle2 = Shape::new(ShapeType::Ellipse, 3500000, 1800000, 3000000, 3000000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Passion");
    let circle3 = Shape::new(ShapeType::Ellipse, 2500000, 3200000, 3000000, 3000000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Market Need");
    
    // Center label
    let center = Shape::new(ShapeType::Ellipse, 3200000, 2800000, 1600000, 800000)
        .with_fill(ShapeFill::new("FFFFFF"))
        .with_text("IKIGAI");
    
    slides.push(
        SlideContent::new("Finding Your Ikigai - Venn Diagram")
            .add_shape(circle1)
            .add_shape(circle2)
            .add_shape(circle3)
            .add_shape(center)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 18: Timeline/Roadmap (NEW)
    // =========================================================================
    println!("📊 Slide 18: Project Timeline");
    
    let timeline_table = TableBuilder::new(vec![1500000, 1500000, 1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q2 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q3 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q4 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q1 2025").bold().background_color("4472C4").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Research\n& Planning").background_color("BDD7EE").text_color("1F497D"),
            TableCell::new("Design\nPhase").background_color("BDD7EE").text_color("1F497D"),
            TableCell::new("Development\nSprint 1-3").background_color("C6EFCE").text_color("006100"),
            TableCell::new("Testing\n& QA").background_color("FCE4D6").text_color("C65911"),
            TableCell::new("Launch\n& Support").background_color("E2EFDA").text_color("375623"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("✓ Complete").bold().text_color("2E7D32"),
            TableCell::new("✓ Complete").bold().text_color("2E7D32"),
            TableCell::new("In Progress").text_color("ED7D31"),
            TableCell::new("Planned").text_color("7F7F7F"),
            TableCell::new("Planned").text_color("7F7F7F"),
        ]))
        .position(300000, 2000000)
        .build();
    
    slides.push(
        SlideContent::new("Project Roadmap 2024-2025")
            .table(timeline_table)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 19: Dashboard Summary (NEW)
    // =========================================================================
    println!("🔷 Slide 19: Dashboard with KPIs");
    
    // KPI boxes
    let kpi1 = Shape::new(ShapeType::RoundedRectangle, 300000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Revenue\n\n$2.14M\n+15% YoY");
    let kpi2 = Shape::new(ShapeType::RoundedRectangle, 2500000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Customers\n\n12,450\n+22% YoY");
    let kpi3 = Shape::new(ShapeType::RoundedRectangle, 4700000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("NPS Score\n\n72\n+8 pts");
    let kpi4 = Shape::new(ShapeType::RoundedRectangle, 6900000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("5B9BD5"))
        .with_text("Retention\n\n94%\n+3% YoY");
    
    // Status indicators
    let status1 = Shape::new(ShapeType::Ellipse, 1800000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    let status2 = Shape::new(ShapeType::Ellipse, 4000000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    let status3 = Shape::new(ShapeType::Ellipse, 6200000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("FFC000"));
    let status4 = Shape::new(ShapeType::Ellipse, 8400000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    
    slides.push(
        SlideContent::new("Executive Dashboard - Q1 2024")
            .add_shape(kpi1)
            .add_shape(kpi2)
            .add_shape(kpi3)
            .add_shape(kpi4)
            .add_shape(status1)
            .add_shape(status2)
            .add_shape(status3)
            .add_shape(status4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 20: Summary Slide (NEW)
    // =========================================================================
    println!("📝 Slide 20: Summary with Speaker Notes");
    
    slides.push(
        SlideContent::new("Summary & Next Steps")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Completed: Research, Design, Initial Development")
            .add_bullet("In Progress: Sprint 3 Development")
            .add_bullet("Next: QA Testing Phase (Q4 2024)")
            .add_bullet("Launch Target: Q1 2025")
            .add_bullet("Key Risks: Resource constraints, Timeline pressure")
            .content_size(24)
            .notes("Speaker Notes:\n\n1. Emphasize the progress made\n2. Highlight key achievements\n3. Address any concerns about timeline\n4. Open for Q&A")
    );

    // =========================================================================
    // SLIDE 21: Bullet Styles (NEW v0.2.1)
    // =========================================================================
    println!("🔢 Slide 21: Bullet Styles (NEW)");
    
    // Numbered list
    slides.push(
        SlideContent::new("Bullet Styles - Numbered List")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .with_bullet_style(BulletStyle::Number)
            .add_bullet("First numbered item")
            .add_bullet("Second numbered item")
            .add_bullet("Third numbered item")
            .add_bullet("Fourth numbered item")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 22: Lettered Lists (NEW v0.2.1)
    // =========================================================================
    println!("🔤 Slide 22: Lettered Lists (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Lettered Lists")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_lettered("Option A - First choice")
            .add_lettered("Option B - Second choice")
            .add_lettered("Option C - Third choice")
            .add_lettered("Option D - Fourth choice")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 23: Roman Numerals (NEW v0.2.1)
    // =========================================================================
    println!("🏛️ Slide 23: Roman Numerals (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Roman Numerals")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .with_bullet_style(BulletStyle::RomanUpper)
            .add_bullet("Chapter I - Introduction")
            .add_bullet("Chapter II - Background")
            .add_bullet("Chapter III - Methodology")
            .add_bullet("Chapter IV - Results")
            .add_bullet("Chapter V - Conclusion")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 24: Custom Bullets (NEW v0.2.1)
    // =========================================================================
    println!("⭐ Slide 24: Custom Bullets (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Custom Characters")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_styled_bullet("Star bullet point", BulletStyle::Custom('★'))
            .add_styled_bullet("Arrow bullet point", BulletStyle::Custom('→'))
            .add_styled_bullet("Check bullet point", BulletStyle::Custom('✓'))
            .add_styled_bullet("Diamond bullet point", BulletStyle::Custom('◆'))
            .add_styled_bullet("Heart bullet point", BulletStyle::Custom('♥'))
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 25: Sub-bullets / Hierarchy (NEW v0.2.1)
    // =========================================================================
    println!("📊 Slide 25: Sub-bullets Hierarchy (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Hierarchical Lists")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Main Topic 1")
            .add_sub_bullet("Supporting detail A")
            .add_sub_bullet("Supporting detail B")
            .add_bullet("Main Topic 2")
            .add_sub_bullet("Supporting detail C")
            .add_sub_bullet("Supporting detail D")
            .add_bullet("Main Topic 3")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 26: Text Enhancements (NEW v0.2.1)
    // =========================================================================
    println!("✏️ Slide 26: Text Enhancements (NEW)");
    
    // Use BulletPoint with formatting
    let strikethrough_bullet = BulletPoint::new("Strikethrough: This text is crossed out").strikethrough();
    let highlight_bullet = BulletPoint::new("Highlight: Yellow background for emphasis").highlight("FFFF00");
    let subscript_bullet = BulletPoint::new("Subscript: H₂O - for chemical formulas").subscript();
    let superscript_bullet = BulletPoint::new("Superscript: x² - for math expressions").superscript();
    let bold_colored = BulletPoint::new("Combined: Bold + Red color").bold().color("FF0000");
    
    let mut text_enhancements_slide = SlideContent::new("Text Enhancements - New Formatting")
        .layout(SlideLayout::TitleAndContent)
        .title_color("1F497D")
        .title_bold(true)
        .content_size(24);
    text_enhancements_slide.bullets.push(strikethrough_bullet);
    text_enhancements_slide.bullets.push(highlight_bullet);
    text_enhancements_slide.bullets.push(subscript_bullet);
    text_enhancements_slide.bullets.push(superscript_bullet);
    text_enhancements_slide.bullets.push(bold_colored);
    
    slides.push(text_enhancements_slide);

    // =========================================================================
    // SLIDE 27: Font Size Presets (NEW v0.2.1)
    // =========================================================================
    println!("🔤 Slide 27: Font Size Presets (NEW)");
    
    // Demonstrate different font sizes per bullet
    let large_bullet = BulletPoint::new(&format!("LARGE: {}pt - Extra large text", font_sizes::LARGE)).font_size(font_sizes::LARGE);
    let heading_bullet = BulletPoint::new(&format!("HEADING: {}pt - Section headers", font_sizes::HEADING)).font_size(font_sizes::HEADING);
    let body_bullet = BulletPoint::new(&format!("BODY: {}pt - Regular content", font_sizes::BODY)).font_size(font_sizes::BODY);
    let small_bullet = BulletPoint::new(&format!("SMALL: {}pt - Smaller text", font_sizes::SMALL)).font_size(font_sizes::SMALL);
    let caption_bullet = BulletPoint::new(&format!("CAPTION: {}pt - Captions and notes", font_sizes::CAPTION)).font_size(font_sizes::CAPTION);
    
    let mut font_size_slide = SlideContent::new("Font Size Presets - Each line different size")
        .layout(SlideLayout::TitleAndContent)
        .title_color("1F497D")
        .title_bold(true)
        .title_size(font_sizes::TITLE);
    font_size_slide.bullets.push(large_bullet);
    font_size_slide.bullets.push(heading_bullet);
    font_size_slide.bullets.push(body_bullet);
    font_size_slide.bullets.push(small_bullet);
    font_size_slide.bullets.push(caption_bullet);
    
    slides.push(font_size_slide);

    // =========================================================================
    // SLIDE 28: Theme Colors (NEW v0.2.1)
    // =========================================================================
    println!("🎨 Slide 28: Theme Colors (NEW)");
    
    // Create shapes with theme colors
    let corporate_shape = Shape::new(ShapeType::Rectangle, 500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::CORPORATE.primary))
        .with_text("Corporate");
    
    let modern_shape = Shape::new(ShapeType::Rectangle, 2500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::MODERN.primary))
        .with_text("Modern");
    
    let vibrant_shape = Shape::new(ShapeType::Rectangle, 4500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::VIBRANT.primary))
        .with_text("Vibrant");
    
    let dark_shape = Shape::new(ShapeType::Rectangle, 6500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::DARK.primary))
        .with_text("Dark");
    
    let nature_shape = Shape::new(ShapeType::Rectangle, 500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::NATURE.primary))
        .with_text("Nature");
    
    let tech_shape = Shape::new(ShapeType::Rectangle, 2500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::TECH.primary))
        .with_text("Tech");
    
    let carbon_shape = Shape::new(ShapeType::Rectangle, 4500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::CARBON.primary))
        .with_text("Carbon");
    
    slides.push(
        SlideContent::new("Theme Color Palettes")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_shape(corporate_shape)
            .add_shape(modern_shape)
            .add_shape(vibrant_shape)
            .add_shape(dark_shape)
            .add_shape(nature_shape)
            .add_shape(tech_shape)
            .add_shape(carbon_shape)
    );

    // =========================================================================
    // SLIDE 29: Material & Carbon Design Colors (NEW v0.2.1)
    // =========================================================================
    println!("🌈 Slide 29: Material & Carbon Colors (NEW)");
    
    // Material Design colors
    let material_red = Shape::new(ShapeType::Rectangle, 500000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_RED))
        .with_text("M-Red");
    
    let material_blue = Shape::new(ShapeType::Rectangle, 1900000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_BLUE))
        .with_text("M-Blue");
    
    let material_green = Shape::new(ShapeType::Rectangle, 3300000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_GREEN))
        .with_text("M-Green");
    
    let material_orange = Shape::new(ShapeType::Rectangle, 4700000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_ORANGE))
        .with_text("M-Orange");
    
    let material_purple = Shape::new(ShapeType::Rectangle, 6100000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_PURPLE))
        .with_text("M-Purple");
    
    // Carbon Design colors
    let carbon_blue = Shape::new(ShapeType::Rectangle, 500000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_BLUE_60))
        .with_text("C-Blue");
    
    let carbon_green = Shape::new(ShapeType::Rectangle, 1900000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_GREEN_50))
        .with_text("C-Green");
    
    let carbon_red = Shape::new(ShapeType::Rectangle, 3300000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_RED_60))
        .with_text("C-Red");
    
    let carbon_purple = Shape::new(ShapeType::Rectangle, 4700000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_PURPLE_60))
        .with_text("C-Purple");
    
    let carbon_gray = Shape::new(ShapeType::Rectangle, 6100000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_GRAY_100))
        .with_text("C-Gray");
    
    slides.push(
        SlideContent::new("Material & Carbon Design Colors")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_shape(material_red)
            .add_shape(material_blue)
            .add_shape(material_green)
            .add_shape(material_orange)
            .add_shape(material_purple)
            .add_shape(carbon_blue)
            .add_shape(carbon_green)
            .add_shape(carbon_red)
            .add_shape(carbon_purple)
            .add_shape(carbon_gray)
    );

    // =========================================================================
    // SLIDE 30: Image from Base64 (NEW v0.2.1)
    // =========================================================================
    println!("🖼️ Slide 30: Image from Base64 (NEW)");
    
    // 1x1 red PNG pixel in base64
    let _red_pixel_base64 = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8DwHwAFBQIAX8jx0gAAAABJRU5ErkJggg==";
    
    // Create image from base64 (demonstrating the API)
    let _base64_image = ImageBuilder::from_base64(_red_pixel_base64, 914400, 914400, "PNG")
        .position(4000000, 2500000)
        .build();
    
    slides.push(
        SlideContent::new("Image Loading - New Methods")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Image::new(path) - Load from file path")
            .add_bullet("Image::from_base64(data) - Load from base64 string")
            .add_bullet("Image::from_bytes(data) - Load from raw bytes")
            .add_bullet("ImageBuilder for fluent API configuration")
            .add_bullet("Built-in base64 decoder (no external deps)")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 31: Feature Summary (NEW v0.2.1)
    // =========================================================================
    println!("📋 Slide 31: v0.2.1 Feature Summary (NEW)");
    
    slides.push(
        SlideContent::new("New Features in v0.2.1")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_numbered("BulletStyle: Number, Letter, Roman, Custom")
            .add_numbered("TextFormat: Strikethrough, Highlight")
            .add_numbered("TextFormat: Subscript, Superscript")
            .add_numbered("Font size presets in prelude")
            .add_numbered("Image::from_base64 and from_bytes")
            .add_numbered("Theme color palettes (7 themes)")
            .add_numbered("Material & Carbon Design colors")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 32: Slide Show Settings - Comparison Table (REAL: embedded in presProps.xml)
    // =========================================================================
    println!("🎬 Slide 34: Slide Show Settings (Visual)");

    let show_speaker = SlideShowSettings::new().pen_color(PenColor::red());
    let show_kiosk = SlideShowSettings::kiosk();
    let _show_range = SlideShowSettings::new()
        .show_type(ShowType::Browsed)
        .slide_range(SlideRange::Range { start: 1, end: 10 })
        .without_animation(true);
    let _speaker_xml = show_speaker.to_xml();
    let _kiosk_xml = show_kiosk.to_xml();

    let show_table = TableBuilder::new(vec![2000000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Setting").bold().background_color("1F4E79").text_color("FFFFFF"),
            TableCell::new("Speaker").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Kiosk").bold().background_color("ED7D31").text_color("FFFFFF"),
            TableCell::new("Browsed").bold().background_color("70AD47").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Loop").bold().background_color("D6E4F0"),
            TableCell::new("No"), TableCell::new("Yes").bold().text_color("2E7D32"),
            TableCell::new("No"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Narration").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("No").text_color("C62828"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Animation").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("Yes"),
            TableCell::new("No").text_color("C62828"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Timings").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("Auto"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Slide Range").bold().background_color("D6E4F0"),
            TableCell::new("All"), TableCell::new("All"),
            TableCell::new("1-10"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Pen Color").bold().background_color("D6E4F0"),
            TableCell::new("Red").text_color("FF0000"),
            TableCell::new("Red").text_color("FF0000"),
            TableCell::new("Red").text_color("FF0000"),
        ]))
        .position(300000, 1600000)
        .build();

    // Mode icons
    let icon_speaker = Shape::new(ShapeType::RoundedRectangle, 300000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Speaker: Full control");
    let icon_kiosk = Shape::new(ShapeType::RoundedRectangle, 3100000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Kiosk: Auto-loop");
    let icon_browsed = Shape::new(ShapeType::RoundedRectangle, 5900000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Browsed: Scrollbar");

    slides.push(
        SlideContent::new("Slide Show Settings - Mode Comparison")
            .table(show_table)
            .add_shape(icon_speaker)
            .add_shape(icon_kiosk)
            .add_shape(icon_browsed)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 35: Print Settings - Visual Handout Grid
    // =========================================================================
    println!("🖨️  Slide 35: Print Settings & Handouts (Visual)");

    let print = PrintSettings::new()
        .print_what(PrintWhat::Handouts)
        .color_mode(PrintColorMode::Grayscale)
        .handout_layout(GenHandoutLayout::SlidesPerPage6)
        .frame_slides(true)
        .header("Q1 2025 Strategy Review")
        .footer("Confidential - Internal Use Only")
        .print_date(true)
        .print_page_numbers(true);
    let _prnpr_xml = print.to_prnpr_xml();
    let _handout_xml = print.to_handout_master_xml();

    // Visual: 6-slide handout grid (2 cols x 3 rows)
    let hdr = Shape::new(ShapeType::Rectangle, 300000, 1500000, 4200000, 300000)
        .with_fill(ShapeFill::new("E7E6E6"))
        .with_text("Q1 2025 Strategy Review");
    // Row 1
    let s1 = Shape::new(ShapeType::Rectangle, 400000, 2000000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 1");
    let s2 = Shape::new(ShapeType::Rectangle, 2500000, 2000000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 2");
    // Row 2
    let s3 = Shape::new(ShapeType::Rectangle, 400000, 3200000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 3");
    let s4 = Shape::new(ShapeType::Rectangle, 2500000, 3200000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 4");
    // Row 3
    let s5 = Shape::new(ShapeType::Rectangle, 400000, 4400000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 5");
    let s6 = Shape::new(ShapeType::Rectangle, 2500000, 4400000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 6");
    let ftr = Shape::new(ShapeType::Rectangle, 300000, 5600000, 4200000, 300000)
        .with_fill(ShapeFill::new("E7E6E6"))
        .with_text("Confidential - Internal Use Only");

    // Settings summary table on the right
    let print_table = TableBuilder::new(vec![1800000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Print Settings").bold().background_color("1F4E79").text_color("FFFFFF"),
            TableCell::new("").background_color("1F4E79"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Print What").bold().background_color("D6E4F0"),
            TableCell::new("Handouts"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Color Mode").bold().background_color("D6E4F0"),
            TableCell::new("Grayscale"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Layout").bold().background_color("D6E4F0"),
            TableCell::new("6 slides/page"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Frame Slides").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Date").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Page Numbers").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .position(5000000, 1800000)
        .build();

    slides.push(
        SlideContent::new("Print Handout - 6 Slides Per Page")
            .table(print_table)
            .add_shape(hdr)
            .add_shape(s1).add_shape(s2)
            .add_shape(s3).add_shape(s4)
            .add_shape(s5).add_shape(s6)
            .add_shape(ftr)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 36: Advanced Table Merging - Actual Merged Table
    // =========================================================================
    println!("📊 Slide 36: Advanced Table Merging (Visual)");

    // Use TableMergeMap to compute states, then build a visual table
    let mut merge_map = TableMergeMap::new(5, 4);
    merge_map.merge_cells(0, 0, 1, 4).unwrap(); // Title row spans all 4 cols
    merge_map.merge_cells(1, 0, 2, 1).unwrap(); // "Products" spans 2 rows
    merge_map.merge_cells(3, 0, 2, 1).unwrap(); // "Services" spans 2 rows

    // Show merge state labels
    let state_00 = merge_map.cell_state(0, 0); // Anchor gridSpan=4
    let state_01 = merge_map.cell_state(0, 1); // HMerge
    let state_10 = merge_map.cell_state(1, 0); // Anchor rowSpan=2
    let state_20 = merge_map.cell_state(2, 0); // VMerge
    println!("   ├── (0,0): {}", state_00.to_xml_attrs().trim());
    println!("   ├── (0,1): {}", state_01.to_xml_attrs().trim());
    println!("   ├── (1,0): {}", state_10.to_xml_attrs().trim());
    println!("   └── (2,0): {}", state_20.to_xml_attrs().trim());

    // Build the table with REAL merge attributes (gridSpan, rowSpan, hMerge, vMerge)
    let merge_table = TableBuilder::new(vec![1500000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2025 Revenue Report").bold().background_color("1F4E79").text_color("FFFFFF").grid_span(4),
            TableCell::new("").background_color("1F4E79").h_merge(),
            TableCell::new("").background_color("1F4E79").h_merge(),
            TableCell::new("").background_color("1F4E79").h_merge(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Products").bold().background_color("BDD7EE").text_color("1F497D").row_span(2),
            TableCell::new("Hardware").background_color("E2EFDA"),
            TableCell::new("$450,000").text_color("2E7D32").align_right(),
            TableCell::new("+12%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("").background_color("BDD7EE").v_merge(),
            TableCell::new("Software").background_color("E2EFDA"),
            TableCell::new("$680,000").text_color("2E7D32").align_right(),
            TableCell::new("+25%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Services").bold().background_color("FCE4D6").text_color("C65911").row_span(2),
            TableCell::new("Consulting").background_color("FFF2CC"),
            TableCell::new("$320,000").text_color("2E7D32").align_right(),
            TableCell::new("+8%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("").background_color("FCE4D6").v_merge(),
            TableCell::new("Support").background_color("FFF2CC"),
            TableCell::new("$190,000").text_color("2E7D32").align_right(),
            TableCell::new("+5%").bold().text_color("2E7D32").align_right(),
        ]))
        .position(300000, 1600000)
        .build();

    // Legend shapes
    let legend_anchor = Shape::new(ShapeType::RoundedRectangle, 300000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Anchor (gridSpan/rowSpan)");
    let legend_hmerge = Shape::new(ShapeType::RoundedRectangle, 2500000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("hMerge (col covered)");
    let legend_vmerge = Shape::new(ShapeType::RoundedRectangle, 4700000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("vMerge (row covered)");
    let legend_normal = Shape::new(ShapeType::RoundedRectangle, 6900000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"))
        .with_text("Normal (no merge)");

    slides.push(
        SlideContent::new("Advanced Table Merging - Merged Cells")
            .table(merge_table)
            .add_shape(legend_anchor)
            .add_shape(legend_hmerge)
            .add_shape(legend_vmerge)
            .add_shape(legend_normal)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // Build PresentationSettings with all advanced features
    // =========================================================================
    println!("\n⚙️  Building Presentation Settings...");

    // Slide show settings (embedded in presProps.xml as <p:showPr>)
    let show_settings = SlideShowSettings::new()
        .show_type(ShowType::Speaker)
        .pen_color(PenColor::red())
        .use_timings(true);
    println!("   ├── Slide Show: Speaker mode, red pen, timings enabled");
    println!("   │   └── XML: {} bytes", show_settings.to_xml().len());

    // Print settings (embedded in presProps.xml as <p:prnPr>)
    let print_settings = PrintSettings::new()
        .print_what(PrintWhat::Handouts)
        .color_mode(PrintColorMode::Grayscale)
        .handout_layout(GenHandoutLayout::SlidesPerPage6)
        .frame_slides(true)
        .header("Q1 2025 Strategy Review")
        .footer("Confidential - Internal Use Only")
        .print_date(true)
        .print_page_numbers(true);
    println!("   └── Print: Handouts, 6/page, grayscale, framed");
    println!("       └── XML: {} bytes", print_settings.to_prnpr_xml().len());

    let pres_settings = PresentationSettings::new()
        .slide_show(show_settings)
        .print(print_settings);
    println!("   All settings configured → presProps.xml");

    // =========================================================================
    // Generate PPTX with real integrated features
    // =========================================================================
    println!("\n📦 Generating PPTX with integrated features...");
    let pptx_data = create_pptx_with_settings(
        "PPTX-RS Element Showcase",
        slides.clone(),
        Some(pres_settings),
    )?;
    fs::write("comprehensive_demo.pptx", &pptx_data)?;
    println!("   ✓ Created comprehensive_demo.pptx ({} slides, {} bytes)", 
             slides.len(), pptx_data.len());

    // =========================================================================
    // Package Analysis - Demonstrate Reading
    // =========================================================================
    println!("\n📖 Package Analysis (Read Capability):");
    
    let package = Package::open("comprehensive_demo.pptx")?;
    let paths = package.part_paths();
    
    let slide_count = paths.iter()
        .filter(|p| p.starts_with("ppt/slides/slide") && p.ends_with(".xml"))
        .count();
    
    println!("   ├── Total parts: {}", package.part_count());
    println!("   ├── Slides: {}", slide_count);
    println!("   └── Package opened and analyzed successfully");

    // =========================================================================
    // NEW: Parts API Demonstration
    // =========================================================================
    println!("\n🧩 Parts API Demonstration:");
    
    // SlideLayoutPart - 11 layout types
    println!("   ┌── SlideLayoutPart (11 layout types):");
    let layouts = [
        LayoutType::Title,
        LayoutType::TitleAndContent,
        LayoutType::SectionHeader,
        LayoutType::TwoContent,
        LayoutType::Comparison,
        LayoutType::TitleOnly,
        LayoutType::Blank,
        LayoutType::ContentWithCaption,
        LayoutType::PictureWithCaption,
        LayoutType::TitleAndVerticalText,
        LayoutType::VerticalTitleAndText,
    ];
    for (i, layout_type) in layouts.iter().enumerate() {
        let layout = SlideLayoutPart::new(i + 1, *layout_type);
        if i < 3 {
            println!("   │   ├── {}: {} ({})", i + 1, layout_type.name(), layout.path());
        }
    }
    println!("   │   └── ... and {} more layout types", layouts.len() - 3);
    
    // SlideMasterPart
    println!("   ├── SlideMasterPart:");
    let mut master = SlideMasterPart::new(1);
    master.set_name("Custom Master");
    master.add_layout_rel_id("rId2");
    master.add_layout_rel_id("rId3");
    println!("   │   ├── Name: {}", master.name());
    println!("   │   ├── Path: {}", master.path());
    println!("   │   └── Layouts: {} linked", master.layout_rel_ids().len());
    
    // ThemePart - Colors and Fonts
    println!("   ├── ThemePart (colors & fonts):");
    let mut theme = ThemePart::new(1);
    theme.set_name("Corporate Theme");
    theme.set_major_font("Arial");
    theme.set_minor_font("Calibri");
    theme.set_color("accent1", "FF5733");
    theme.set_color("accent2", "33FF57");
    let theme_xml = theme.to_xml()?;
    println!("   │   ├── Name: {}", theme.name());
    println!("   │   ├── Major Font: Arial");
    println!("   │   ├── Minor Font: Calibri");
    println!("   │   └── XML size: {} bytes", theme_xml.len());
    
    // NotesSlidePart - Speaker notes
    println!("   ├── NotesSlidePart (speaker notes):");
    let notes = NotesSlidePart::with_text(1, "Remember to:\n- Introduce yourself\n- Explain the agenda\n- Ask for questions");
    let notes_xml = notes.to_xml()?;
    println!("   │   ├── Path: {}", notes.path());
    println!("   │   ├── Text: \"{}...\"", &notes.notes_text()[..20.min(notes.notes_text().len())]);
    println!("   │   └── XML size: {} bytes", notes_xml.len());
    
    // AppPropertiesPart - Application metadata
    println!("   ├── AppPropertiesPart (metadata):");
    let mut app_props = AppPropertiesPart::new();
    app_props.set_company("Acme Corporation");
    app_props.set_slides(slides.len() as u32);
    let app_xml = app_props.to_xml()?;
    println!("   │   ├── Company: Acme Corporation");
    println!("   │   ├── Slides: {}", slides.len());
    println!("   │   └── XML size: {} bytes", app_xml.len());
    
    // MediaPart - Video/Audio formats
    println!("   ├── MediaPart (10 media formats):");
    println!("   │   ├── Video: mp4, webm, avi, wmv, mov");
    println!("   │   ├── Audio: mp3, wav, wma, m4a, ogg");
    let sample_media = MediaPart::new(1, MediaFormat::Mp4, vec![0; 100]);
    println!("   │   └── Sample: {} ({})", sample_media.path(), sample_media.format().mime_type());
    
    // TablePart - Table with formatting
    println!("   ├── TablePart (cell formatting):");
    let table_part = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Header 1").bold().background("4472C4"),
            TableCellPart::new("Header 2").bold().background("4472C4"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Data 1").color("333333"),
            TableCellPart::new("Data 2").italic(),
        ]))
        .position(EMU_PER_INCH, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 6, EMU_PER_INCH * 2);
    let table_xml = table_part.to_slide_xml(10);
    println!("   │   ├── Rows: {}", table_part.rows.len());
    println!("   │   ├── Features: bold, italic, colors, backgrounds");
    println!("   │   └── XML size: {} bytes", table_xml.len());
    
    // ContentTypesPart
    println!("   └── ContentTypesPart:");
    let mut content_types = ContentTypesPart::new();
    content_types.add_presentation();
    content_types.add_slide(1);
    content_types.add_slide_layout(1);
    content_types.add_slide_master(1);
    content_types.add_theme(1);
    content_types.add_core_properties();
    content_types.add_app_properties();
    let ct_xml = content_types.to_xml()?;
    println!("       ├── Path: {}", content_types.path());
    println!("       └── XML size: {} bytes", ct_xml.len());

    // =========================================================================
    // NEW: Elements API Demonstration
    // =========================================================================
    println!("\n🎨 Elements API Demonstration:");
    
    // Color types
    println!("   ┌── Color Types:");
    let rgb = RgbColor::new(255, 87, 51);
    let rgb_hex = RgbColor::from_hex("#4472C4").unwrap();
    let scheme = SchemeColor::Accent1;
    let color = Color::rgb(100, 149, 237);
    println!("   │   ├── RgbColor::new(255, 87, 51) → {}", rgb.to_hex());
    println!("   │   ├── RgbColor::from_hex(\"#4472C4\") → {}", rgb_hex.to_hex());
    println!("   │   ├── SchemeColor::Accent1 → {}", scheme.as_str());
    println!("   │   └── Color::rgb(100, 149, 237) → XML: {}", color.to_xml().chars().take(30).collect::<String>());
    
    // Position and Size
    println!("   ├── Position & Size (EMU units):");
    let pos = Position::from_inches(1.0, 2.0);
    let size = Size::from_inches(4.0, 3.0);
    println!("   │   ├── Position::from_inches(1.0, 2.0) → x={}, y={}", pos.x, pos.y);
    println!("   │   ├── Size::from_inches(4.0, 3.0) → w={}, h={}", size.width, size.height);
    println!("   │   └── EMU_PER_INCH = {}", EMU_PER_INCH);
    
    // Transform
    println!("   └── Transform (position + size + rotation):");
    let transform = Transform::from_inches(1.0, 1.5, 3.0, 2.0).with_rotation(45.0);
    let transform_xml = transform.to_xml();
    println!("       ├── Transform::from_inches(1.0, 1.5, 3.0, 2.0)");
    println!("       ├── .with_rotation(45.0)");
    println!("       └── XML: {}...", &transform_xml[..50.min(transform_xml.len())]);

    // =========================================================================
    // NEW: Advanced Features Demonstration
    // =========================================================================
    println!("\n🚀 Advanced Features Demonstration:");

    // -------------------------------------------------------------------------
    // Complex Table Examples
    // -------------------------------------------------------------------------
    println!("   ┌── Complex Table Examples:");
    
    // Example 1: Financial Report Table
    println!("   │   ┌── Financial Report Table (5x4 with formatting):");
    let financial_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Q1 2024 Financial Summary")
                .col_span(4)
                .bold()
                .center()
                .background("1F4E79")
                .color("FFFFFF")
                .font_size(14)
                .font("Arial Black"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Category").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Revenue").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Expenses").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Profit").bold().center().background("2E75B6").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Product Sales").align(HorizontalAlign::Left),
            TableCellPart::new("$1,250,000").align(HorizontalAlign::Right).color("2E7D32"),
            TableCellPart::new("$450,000").align(HorizontalAlign::Right).color("C62828"),
            TableCellPart::new("$800,000").align(HorizontalAlign::Right).bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Services").align(HorizontalAlign::Left),
            TableCellPart::new("$890,000").align(HorizontalAlign::Right).color("2E7D32"),
            TableCellPart::new("$320,000").align(HorizontalAlign::Right).color("C62828"),
            TableCellPart::new("$570,000").align(HorizontalAlign::Right).bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Total").bold().background("E7E6E6"),
            TableCellPart::new("$2,140,000").bold().align(HorizontalAlign::Right).background("E7E6E6"),
            TableCellPart::new("$770,000").bold().align(HorizontalAlign::Right).background("E7E6E6"),
            TableCellPart::new("$1,370,000").bold().align(HorizontalAlign::Right).background("C6EFCE").color("006100"),
        ]))
        .position(EMU_PER_INCH / 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 8, EMU_PER_INCH * 3);
    let fin_xml = financial_table.to_slide_xml(100);
    println!("   │   │   ├── Merged header spanning 4 columns");
    println!("   │   │   ├── Color-coded values (green=positive, red=negative)");
    println!("   │   │   ├── Custom fonts and sizes");
    println!("   │   │   └── XML: {} bytes", fin_xml.len());

    // Example 2: Comparison Matrix
    println!("   │   ├── Comparison Matrix (features vs products):");
    let matrix_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Feature").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Basic").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Pro").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Enterprise").bold().center().background("4472C4").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Storage").align(HorizontalAlign::Left),
            TableCellPart::new("5 GB").center(),
            TableCellPart::new("50 GB").center(),
            TableCellPart::new("Unlimited").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Users").align(HorizontalAlign::Left),
            TableCellPart::new("1").center(),
            TableCellPart::new("10").center(),
            TableCellPart::new("Unlimited").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Support").align(HorizontalAlign::Left),
            TableCellPart::new("Email").center(),
            TableCellPart::new("24/7 Chat").center(),
            TableCellPart::new("Dedicated").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Price/mo").bold().background("F2F2F2"),
            TableCellPart::new("$9").center().bold().background("F2F2F2"),
            TableCellPart::new("$29").center().bold().background("F2F2F2"),
            TableCellPart::new("$99").center().bold().background("F2F2F2"),
        ]));
    println!("   │   │   └── 5x4 matrix with alternating styles");

    // Example 3: Schedule/Timeline Table
    println!("   │   └── Schedule Table (with row spans):");
    let schedule_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Time").bold().center().background("70AD47").color("FFFFFF"),
            TableCellPart::new("Monday").bold().center().background("70AD47").color("FFFFFF"),
            TableCellPart::new("Tuesday").bold().center().background("70AD47").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("9:00 AM").center().background("E2EFDA"),
            TableCellPart::new("Team Standup").center().row_span(2).valign(VerticalAlign::Middle).background("BDD7EE"),
            TableCellPart::new("Code Review").center(),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("10:00 AM").center().background("E2EFDA"),
            TableCellPart::merged(),
            TableCellPart::new("Sprint Planning").center().background("FCE4D6"),
        ]));
    println!("   │       └── Row spans for multi-hour events");

    // -------------------------------------------------------------------------
    // Complex Animation Sequences
    // -------------------------------------------------------------------------
    println!("   ├── Complex Animation Sequences:");
    
    // Sequence 1: Title entrance with staggered content
    println!("   │   ┌── Staggered Entrance Sequence:");
    let title_anim = Animation::new(2, AnimationEffect::Fade)
        .trigger(AnimationTrigger::OnClick)
        .duration(500);
    let content1 = Animation::new(3, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(200);
    let content2 = Animation::new(4, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(100);
    let content3 = Animation::new(5, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(100);
    let staggered = SlideAnimations::new()
        .add(title_anim)
        .add(content1)
        .add(content2)
        .add(content3)
        .transition(SlideTransition::new(TransitionEffect::Push).direction(AnimationDirection::Left).duration(750));
    let staggered_xml = staggered.to_timing_xml()?;
    println!("   │   │   ├── Title: Fade on click");
    println!("   │   │   ├── Content 1-3: FlyIn with 100ms stagger");
    println!("   │   │   ├── Transition: Push from left (750ms)");
    println!("   │   │   └── XML: {} bytes", staggered_xml.len());

    // Sequence 2: Emphasis and exit
    println!("   │   ├── Emphasis + Exit Sequence:");
    let emphasis = Animation::new(6, AnimationEffect::Pulse)
        .trigger(AnimationTrigger::OnClick)
        .duration(1000)
        .repeat(3);
    let exit = Animation::new(6, AnimationEffect::FadeOut)
        .trigger(AnimationTrigger::AfterPrevious)
        .duration(500);
    let emphasis_seq = SlideAnimations::new()
        .add(emphasis)
        .add(exit);
    println!("   │   │   ├── Pulse 3x on click, then fade out");
    println!("   │   │   └── Same shape, sequential effects");

    // Sequence 3: Motion path
    println!("   │   └── Motion Path Animation:");
    let motion = Animation::new(7, AnimationEffect::Lines)
        .trigger(AnimationTrigger::OnClick)
        .duration(2000);
    println!("   │       └── Custom path: Lines, Arcs, Turns, Loops");

    // -------------------------------------------------------------------------
    // SmartArt Combinations
    // -------------------------------------------------------------------------
    println!("   ├── SmartArt Layout Examples:");
    
    // Process flow
    println!("   │   ┌── Process Flow (5 steps):");
    let process = SmartArtPart::new(1, SmartArtLayout::BasicProcess)
        .add_items(vec!["Research", "Design", "Develop", "Test", "Deploy"])
        .position(EMU_PER_INCH / 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 8, EMU_PER_INCH * 2);
    println!("   │   │   └── {} nodes in horizontal flow", process.nodes().len());

    // Organization chart
    println!("   │   ├── Organization Chart:");
    let org = SmartArtPart::new(2, SmartArtLayout::OrgChart)
        .add_items(vec!["CEO", "CTO", "CFO", "VP Engineering", "VP Sales"]);
    println!("   │   │   └── Hierarchical structure with {} positions", org.nodes().len());

    // Cycle diagram
    println!("   │   ├── Cycle Diagram:");
    let cycle = SmartArtPart::new(3, SmartArtLayout::BasicCycle)
        .add_items(vec!["Plan", "Do", "Check", "Act"]);
    println!("   │   │   └── PDCA cycle with {} phases", cycle.nodes().len());

    // Venn diagram
    println!("   │   ├── Venn Diagram:");
    let venn = SmartArtPart::new(4, SmartArtLayout::BasicVenn)
        .add_items(vec!["Skills", "Passion", "Market Need"]);
    println!("   │   │   └── 3-circle Venn for Ikigai concept");

    // Pyramid
    println!("   │   └── Pyramid:");
    let pyramid = SmartArtPart::new(5, SmartArtLayout::BasicPyramid)
        .add_items(vec!["Self-Actualization", "Esteem", "Love/Belonging", "Safety", "Physiological"]);
    println!("   │       └── Maslow's hierarchy with {} levels", pyramid.nodes().len());

    // -------------------------------------------------------------------------
    // 3D Model Configurations
    // -------------------------------------------------------------------------
    println!("   ├── 3D Model Configurations:");
    
    // Product showcase
    println!("   │   ┌── Product Showcase:");
    let product_3d = Model3DPart::new(1, Model3DFormat::Glb, vec![0; 100])
        .camera(CameraPreset::IsometricTopUp)
        .rotation(0.0, 45.0, 0.0)
        .zoom(1.2)
        .position(EMU_PER_INCH * 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 4, EMU_PER_INCH * 4);
    println!("   │   │   ├── Camera: Isometric top-up view");
    println!("   │   │   ├── Rotation: 45° Y-axis for best angle");
    println!("   │   │   └── Zoom: 1.2x for detail");

    // Architectural model
    println!("   │   ├── Architectural Model:");
    let arch_3d = Model3DPart::new(2, Model3DFormat::Gltf, vec![0; 100])
        .camera(CameraPreset::Front)
        .rotation(15.0, -30.0, 0.0)
        .ambient_light("FFFFCC");
    println!("   │   │   ├── Camera: Front view with tilt");
    println!("   │   │   └── Ambient: Warm lighting (FFFFCC)");

    // Technical diagram
    println!("   │   └── Technical Diagram:");
    let tech_3d = Model3DPart::new(3, Model3DFormat::Obj, vec![0; 100])
        .camera(CameraPreset::IsometricOffAxis1Top)
        .rotation(0.0, 0.0, 0.0);
    println!("   │       └── Camera: Off-axis isometric for exploded view");

    // -------------------------------------------------------------------------
    // Theme + Master + Layout Combination
    // -------------------------------------------------------------------------
    println!("   ├── Theme + Master + Layout Integration:");
    
    // Corporate theme
    let mut corp_theme = ThemePart::new(1);
    corp_theme.set_name("Corporate Blue");
    corp_theme.set_major_font("Segoe UI");
    corp_theme.set_minor_font("Segoe UI Light");
    corp_theme.set_color("dk1", "000000");
    corp_theme.set_color("lt1", "FFFFFF");
    corp_theme.set_color("dk2", "1F497D");
    corp_theme.set_color("lt2", "EEECE1");
    corp_theme.set_color("accent1", "4472C4");
    corp_theme.set_color("accent2", "ED7D31");
    corp_theme.set_color("accent3", "A5A5A5");
    corp_theme.set_color("accent4", "FFC000");
    corp_theme.set_color("accent5", "5B9BD5");
    corp_theme.set_color("accent6", "70AD47");
    let theme_xml = corp_theme.to_xml()?;
    println!("   │   ├── Theme: Corporate Blue");
    println!("   │   │   ├── Fonts: Segoe UI / Segoe UI Light");
    println!("   │   │   ├── 12 color slots defined");
    println!("   │   │   └── XML: {} bytes", theme_xml.len());

    // Master with multiple layouts
    let mut corp_master = SlideMasterPart::new(1);
    corp_master.set_name("Corporate Master");
    corp_master.add_layout_rel_id("rId2"); // Title
    corp_master.add_layout_rel_id("rId3"); // Title + Content
    corp_master.add_layout_rel_id("rId4"); // Section Header
    corp_master.add_layout_rel_id("rId5"); // Two Content
    corp_master.add_layout_rel_id("rId6"); // Comparison
    corp_master.add_layout_rel_id("rId7"); // Title Only
    corp_master.add_layout_rel_id("rId8"); // Blank
    println!("   │   └── Master: {} with {} layouts linked", corp_master.name(), corp_master.layout_rel_ids().len());

    // -------------------------------------------------------------------------
    // VBA + Custom XML Integration
    // -------------------------------------------------------------------------
    println!("   ├── VBA + Custom XML Integration:");
    
    // VBA with multiple modules
    let vba_project = VbaProjectPart::new()
        .add_module(VbaModule::new("AutoRun", r#"
Sub Auto_Open()
    MsgBox "Welcome to the presentation!"
End Sub

Sub NavigateToSlide(slideNum As Integer)
    SlideShowWindows(1).View.GotoSlide slideNum
End Sub
"#))
        .add_module(VbaModule::new("DataHelpers", r#"
Function GetCustomData(key As String) As String
    ' Read from Custom XML part
    GetCustomData = ActivePresentation.CustomXMLParts(1).SelectSingleNode("//" & key).Text
End Function
"#))
        .add_module(VbaModule::class("SlideController", r#"
Private currentSlide As Integer

Public Sub NextSlide()
    currentSlide = currentSlide + 1
    NavigateToSlide currentSlide
End Sub
"#));
    println!("   │   ├── VBA Project:");
    println!("   │   │   ├── AutoRun: Auto_Open, NavigateToSlide");
    println!("   │   │   ├── DataHelpers: GetCustomData (reads Custom XML)");
    println!("   │   │   └── SlideController: Class for navigation");

    // Custom XML with structured data
    let app_config = CustomXmlPart::new(1, "presentationConfig")
        .namespace("http://company.com/pptx/config")
        .property("version", "2.1.0")
        .property("author", "Demo User")
        .property("department", "Engineering")
        .property("confidentiality", "Internal")
        .property("lastModified", "2024-01-15T10:30:00Z");
    let config_xml = app_config.to_xml()?;
    println!("   │   └── Custom XML:");
    println!("   │       ├── Namespace: http://company.com/pptx/config");
    println!("   │       ├── Properties: version, author, department, etc.");
    println!("   │       └── XML: {} bytes", config_xml.len());

    // -------------------------------------------------------------------------
    // Embedded Fonts with Variants
    // -------------------------------------------------------------------------
    println!("   ├── Embedded Font Collection:");
    let mut font_collection = EmbeddedFontCollection::new();
    font_collection.add("Corporate Sans", vec![0; 1000]);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::Bold);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::Italic);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::BoldItalic);
    font_collection.add("Code Mono", vec![0; 800]);
    let fonts_xml = font_collection.to_xml();
    println!("   │   ├── Corporate Sans: Regular, Bold, Italic, BoldItalic");
    println!("   │   ├── Code Mono: Regular");
    println!("   │   ├── Total: {} font files", font_collection.len());
    println!("   │   └── XML: {} bytes", fonts_xml.len());

    // -------------------------------------------------------------------------
    // Handout with Full Configuration
    // -------------------------------------------------------------------------
    println!("   └── Handout Master Configuration:");
    let handout = HandoutMasterPart::new()
        .layout(HandoutLayout::SlidesPerPage6)
        .header("Q1 2024 Strategy Review")
        .footer("Confidential - Internal Use Only");
    let handout_xml = handout.to_xml()?;
    println!("       ├── Layout: 6 slides per page");
    println!("       ├── Header: Q1 2024 Strategy Review");
    println!("       ├── Footer: Confidential - Internal Use Only");
    println!("       └── XML: {} bytes", handout_xml.len());

    // =========================================================================
    // Summary
    // =========================================================================
    println!("\n╔══════════════════════════════════════════════════════════════╗");
    println!("║                    Element Coverage Summary                   ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  LAYOUTS (6 types):                                          ║");
    println!("║    ✓ CenteredTitle    ✓ TitleOnly      ✓ TitleAndContent     ║");
    println!("║    ✓ TitleAndBigContent  ✓ TwoColumn   ✓ Blank               ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  TEXT FORMATTING:                                            ║");
    println!("║    ✓ Bold            ✓ Italic         ✓ Underline            ║");
    println!("║    ✓ Font Size       ✓ Font Color     ✓ Title/Content styles ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  TABLES:                                                     ║");
    println!("║    ✓ Multiple rows/columns  ✓ Bold cells  ✓ Background colors║");
    println!("║    ✓ Header styling         ✓ Position control               ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  CHARTS:                                                     ║");
    println!("║    ✓ Bar Chart       ✓ Line Chart     ✓ Pie Chart            ║");
    println!("║    ✓ Multiple series ✓ Categories                            ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  SHAPES:                                                     ║");
    println!("║    ✓ Rectangle       ✓ Ellipse        ✓ RoundedRectangle     ║");
    println!("║    ✓ Triangle        ✓ Diamond        ✓ Color fills          ║");
    println!("║    ✓ Gradient fills  ✓ Transparency   ✓ Text in shapes       ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  CONNECTORS (NEW):                                           ║");
    println!("║    ✓ Straight        ✓ Elbow          ✓ Curved               ║");
    println!("║    ✓ Arrow types     ✓ Dash styles    ✓ Line colors/widths   ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  IMAGES:                                                     ║");
    println!("║    ✓ Image placeholders  ✓ Position   ✓ Dimensions           ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  PACKAGE:                                                    ║");
    println!("║    ✓ Create PPTX     ✓ Read PPTX      ✓ Analyze contents     ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  PARTS API (NEW):                                            ║");
    println!("║    ✓ SlideLayoutPart (11 types)  ✓ SlideMasterPart           ║");
    println!("║    ✓ ThemePart (colors/fonts)    ✓ NotesSlidePart            ║");
    println!("║    ✓ AppPropertiesPart           ✓ MediaPart (10 formats)    ║");
    println!("║    ✓ TablePart (cell formatting) ✓ ContentTypesPart          ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  ELEMENTS API:                                               ║");
    println!("║    ✓ RgbColor        ✓ SchemeColor    ✓ Color enum           ║");
    println!("║    ✓ Position        ✓ Size           ✓ Transform            ║");
    println!("║    ✓ EMU conversions (inches, cm, mm, pt)                    ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  ADVANCED FEATURES (NEW):                                    ║");
    println!("║    ✓ Animation (50+ effects)  ✓ Transitions (27 types)       ║");
    println!("║    ✓ SmartArt (25 layouts)    ✓ 3D Models (GLB/GLTF/OBJ)     ║");
    println!("║    ✓ VBA Macros (.pptm)       ✓ Embedded Fonts               ║");
    println!("║    ✓ Custom XML               ✓ Handout Master               ║");
    println!("║    ✓ Table borders/alignment  ✓ Merged cells                 ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  Output: comprehensive_demo.pptx ({} slides, {} KB)         ║", 
             slides.len(), pptx_data.len() / 1024);
    println!("╚══════════════════════════════════════════════════════════════╝");

    Ok(())
}

pub fn title_bold(self, bold: bool) -> Self

Examples found in repository

examples/styled_presentation.rs (line 71)

fn create_bold_content_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Bold Content Slide")
            .title_bold(true)
            .content_bold(true)  // Make bullets bold
            .add_bullet("Bold bullet point 1")
            .add_bullet("Bold bullet point 2")
            .add_bullet("Bold bullet point 3"),
        SlideContent::new("Regular Content")
            .title_bold(true)
            .content_bold(false)  // Regular bullets
            .add_bullet("Regular bullet point 1")
            .add_bullet("Regular bullet point 2"),
    ];

    let pptx_data = create_pptx_with_content("Bold Content Example", slides)?;
    fs::write("examples/output/bold_content.pptx", pptx_data)?;
    Ok(())
}

fn create_mixed_formatting_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Title Slide")
            .title_size(52)
            .title_bold(true)
            .content_size(24)
            .content_bold(false)
            .add_bullet("Large content text")
            .add_bullet("Still readable")
            .add_bullet("Professional look"),
        SlideContent::new("Compact Slide")
            .title_size(36)
            .title_bold(false)
            .content_size(18)
            .content_bold(true)
            .add_bullet("Smaller title")
            .add_bullet("Bold content")
            .add_bullet("Tight spacing"),
        SlideContent::new("Summary")
            .title_size(48)
            .title_bold(true)
            .content_size(32)
            .content_bold(true)
            .add_bullet("Large bold text")
            .add_bullet("High impact")
            .add_bullet("Great for emphasis"),
    ];

    let pptx_data = create_pptx_with_content("Mixed Formatting Example", slides)?;
    fs::write("examples/output/mixed_formatting.pptx", pptx_data)?;
    Ok(())
}

examples/test_notes.rs (line 13)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    println!("Creating test presentation with speaker notes...");
    
    let slides = vec![
        SlideContent::new("Slide 1 - With Notes")
            .layout(SlideLayout::CenteredTitle)
            .title_size(54)
            .title_bold(true)
            .notes("This is a speaker note for slide 1. It should appear in presenter view."),
        
        SlideContent::new("Slide 2 - Also With Notes")
            .add_bullet("Bullet point 1")
            .add_bullet("Bullet point 2")
            .add_bullet("Bullet point 3")
            .notes("Notes for slide 2 with bullet points."),
        
        SlideContent::new("Slide 3 - No Notes")
            .add_bullet("This slide has no notes"),
        
        SlideContent::new("Slide 4 - More Notes")
            .layout(SlideLayout::TwoColumn)
            .add_bullet("Left 1")
            .add_bullet("Left 2")
            .add_bullet("Right 1")
            .add_bullet("Right 2")
            .notes("Two column layout with speaker notes."),
    ];
    
    let pptx_data = create_pptx_with_content("Test Notes", slides)?;
    fs::write("test_notes.pptx", &pptx_data)?;
    println!("Created test_notes.pptx ({} bytes)", pptx_data.len());
    println!("\nOpen in PowerPoint and check presenter view for notes!");
    
    Ok(())
}

examples/table_generation.rs (line 116)

fn create_styled_table_example() -> Result<(), Box<dyn std::error::Error>> {
    let header_cells = vec![
        TableCell::new("Name").bold().background_color("003366"),
        TableCell::new("Age").bold().background_color("003366"),
        TableCell::new("City").bold().background_color("003366"),
    ];
    let header_row = TableRow::new(header_cells);

    let data_rows = vec![
        TableRow::new(vec![
            TableCell::new("Alice"),
            TableCell::new("30"),
            TableCell::new("NYC"),
        ]),
        TableRow::new(vec![
            TableCell::new("Bob"),
            TableCell::new("28"),
            TableCell::new("LA"),
        ]),
        TableRow::new(vec![
            TableCell::new("Carol"),
            TableCell::new("35"),
            TableCell::new("Chicago"),
        ]),
    ];

    let table = Table::new(
        vec![vec![header_row], data_rows].concat(),
        vec![1500000, 1500000, 1500000],
        500000,
        1500000,
    );

    let slides = vec![
        SlideContent::new("Styled Table")
            .title_bold(true)
            .title_color("003366")
            .add_bullet("Table with formatting"),
        SlideContent::new("People Data")
            .table(table),
    ];

    let pptx_data = create_pptx_with_content("Styled Table", slides)?;
    fs::write("examples/output/styled_table.pptx", pptx_data)?;
    Ok(())
}

fn create_data_table_example() -> Result<(), Box<dyn std::error::Error>> {
    let header_cells = vec![
        TableCell::new("Product").bold().background_color("1F497D"),
        TableCell::new("Revenue").bold().background_color("1F497D"),
        TableCell::new("Growth").bold().background_color("1F497D"),
    ];
    let header_row = TableRow::new(header_cells);

    let data_rows = vec![
        TableRow::new(vec![
            TableCell::new("Product A"),
            TableCell::new("$100K"),
            TableCell::new("+15%"),
        ]),
        TableRow::new(vec![
            TableCell::new("Product B"),
            TableCell::new("$150K"),
            TableCell::new("+22%"),
        ]),
        TableRow::new(vec![
            TableCell::new("Product C"),
            TableCell::new("$200K"),
            TableCell::new("+18%"),
        ]),
    ];

    let table = Table::new(
        vec![vec![header_row], data_rows].concat(),
        vec![2000000, 2000000, 1500000],
        457200,
        1400000,
    );

    let slides = vec![
        SlideContent::new("Sales Data Table")
            .title_bold(true)
            .title_size(48)
            .add_bullet("Quarterly sales figures"),
        SlideContent::new("Q1 2025 Sales")
            .table(table),
        SlideContent::new("Summary")
            .content_bold(true)
            .add_bullet("Total Revenue: $450K")
            .add_bullet("Average Growth: +18.3%")
            .add_bullet("Best Performer: Product C"),
    ];

    let pptx_data = create_pptx_with_content("Sales Data", slides)?;
    fs::write("examples/output/data_table.pptx", pptx_data)?;
    Ok(())
}

fn create_multiple_tables_example() -> Result<(), Box<dyn std::error::Error>> {
    // Table 1: Employees
    let emp_header = TableRow::new(vec![
        TableCell::new("ID").bold().background_color("4F81BD"),
        TableCell::new("Name").bold().background_color("4F81BD"),
        TableCell::new("Department").bold().background_color("4F81BD"),
    ]);
    let emp_rows = vec![
        TableRow::new(vec![
            TableCell::new("001"),
            TableCell::new("Alice"),
            TableCell::new("Engineering"),
        ]),
        TableRow::new(vec![
            TableCell::new("002"),
            TableCell::new("Bob"),
            TableCell::new("Sales"),
        ]),
        TableRow::new(vec![
            TableCell::new("003"),
            TableCell::new("Carol"),
            TableCell::new("Marketing"),
        ]),
    ];
    let emp_table = Table::new(
        vec![vec![emp_header], emp_rows].concat(),
        vec![1000000, 2000000, 2000000],
        500000,
        1500000,
    );

    // Table 2: Projects
    let proj_header = TableRow::new(vec![
        TableCell::new("Project").bold().background_color("003366"),
        TableCell::new("Status").bold().background_color("003366"),
        TableCell::new("Owner").bold().background_color("003366"),
    ]);
    let proj_rows = vec![
        TableRow::new(vec![
            TableCell::new("Project A"),
            TableCell::new("In Progress"),
            TableCell::new("Alice"),
        ]),
        TableRow::new(vec![
            TableCell::new("Project B"),
            TableCell::new("Completed"),
            TableCell::new("Bob"),
        ]),
        TableRow::new(vec![
            TableCell::new("Project C"),
            TableCell::new("Planning"),
            TableCell::new("Carol"),
        ]),
    ];
    let proj_table = Table::new(
        vec![vec![proj_header], proj_rows].concat(),
        vec![2000000, 2000000, 1500000],
        500000,
        1500000,
    );

    let slides = vec![
        SlideContent::new("Multiple Tables")
            .title_bold(true)
            .add_bullet("Slide with multiple tables"),
        SlideContent::new("Table 1: Employees")
            .table(emp_table),
        SlideContent::new("Table 2: Projects")
            .table(proj_table),
        SlideContent::new("Summary")
            .add_bullet("Total Employees: 3")
            .add_bullet("Active Projects: 3")
            .add_bullet("Completion Rate: 33%"),
    ];

    let pptx_data = create_pptx_with_content("Multiple Tables", slides)?;
    fs::write("examples/output/multiple_tables.pptx", pptx_data)?;
    Ok(())
}

examples/text_styling_complete.rs (line 107)

fn create_combined_styling_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Bold & Italic & Red")
            .title_bold(true)
            .title_italic(true)
            .title_color("FF0000")
            .title_size(52)
            .add_bullet("Regular content"),
        SlideContent::new("Underlined Blue Content")
            .content_underline(true)
            .content_color("0000FF")
            .content_bold(true)
            .add_bullet("Bold, underlined, blue bullet")
            .add_bullet("Multiple effects applied"),
        SlideContent::new("Mixed Effects")
            .title_italic(true)
            .title_color("FF6600")
            .content_bold(true)
            .content_underline(true)
            .content_color("0066FF")
            .add_bullet("Title: italic, orange")
            .add_bullet("Content: bold, underlined, blue"),
        SlideContent::new("Professional Look")
            .title_bold(true)
            .title_size(48)
            .title_color("003366")
            .content_size(24)
            .add_bullet("Clean, professional styling")
            .add_bullet("Dark blue title with bold")
            .add_bullet("Larger content text"),
    ];

    let pptx_data = create_pptx_with_content("Combined Styling", slides)?;
    fs::write("examples/output/combined_styling.pptx", pptx_data)?;
    Ok(())
}

fn create_professional_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Company Presentation")
            .title_bold(true)
            .title_size(56)
            .title_color("003366")
            .content_size(32)
            .add_bullet("2025 Annual Review"),
        SlideContent::new("Key Highlights")
            .title_bold(true)
            .title_color("003366")
            .content_bold(true)
            .content_color("0066CC")
            .add_bullet("Revenue growth: +25%")
            .add_bullet("Market expansion: 3 new regions")
            .add_bullet("Team growth: +50 employees"),
        SlideContent::new("Strategic Initiatives")
            .title_italic(true)
            .title_color("FF6600")
            .content_underline(true)
            .add_bullet("Digital transformation")
            .add_bullet("Customer experience improvement")
            .add_bullet("Sustainability focus"),
        SlideContent::new("Q1 2025 Goals")
            .title_bold(true)
            .title_underline(true)
            .title_color("003366")
            .content_bold(true)
            .add_bullet("Launch new product line")
            .add_bullet("Expand to 5 new markets")
            .add_bullet("Achieve 30% revenue growth"),
        SlideContent::new("Thank You")
            .title_bold(true)
            .title_size(60)
            .title_color("003366")
            .content_italic(true)
            .content_size(28)
            .add_bullet("Questions & Discussion"),
    ];

    let pptx_data = create_pptx_with_content("Professional Presentation", slides)?;
    fs::write("examples/output/professional.pptx", pptx_data)?;
    Ok(())
}

examples/alignment_test.rs (line 24)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    println!("=== Alignment Test: ppt-rs vs python-pptx ===\n");
    
    // Create output directory
    fs::create_dir_all("examples/output")?;
    
    // Create slides matching the reference presentation structure
    let slides = vec![
        // Slide 1: Title Slide
        SlideContent::new("Alignment Test Presentation")
            .title_size(54)
            .title_bold(true)
            .title_color("003366"),  // RGB(0, 51, 102)
        
        // Slide 2: Content Slide
        SlideContent::new("Shapes and Formatting")
            .title_size(44)
            .title_bold(true)
            .title_color("003366")
            .add_bullet("Text formatting (bold, colors, sizes)")
            .add_bullet("Shape creation and positioning")
            .add_bullet("Multiple slides and layouts"),
    ];
    
    // Generate PPTX
    let pptx_data = create_pptx_with_content(
        "Alignment Test Presentation",
        slides,
    )?;
    
    // Write to file
    let output_path = "examples/output/alignment_test_ppt_rs.pptx";
    fs::write(output_path, pptx_data)?;
    
    println!("✓ Created presentation: {output_path}");
    println!("  - Title: Alignment Test Presentation");
    println!("  - Slides: 2");
    println!("\nNext steps:");
    println!("  1. Generate reference: python3 scripts/generate_reference.py");
    println!("  2. Compare files: python3 scripts/compare_pptx.py");
    
    Ok(())
}

examples/layout_demo.rs (line 44)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        // Slide 1: Title Only
        SlideContent::new("Welcome to Layout Demo")
            .layout(SlideLayout::TitleOnly),

        // Slide 2: Centered Title (good for cover slides)
        SlideContent::new("Centered Title Slide")
            .layout(SlideLayout::CenteredTitle)
            .title_size(60)
            .title_color("4F81BD"),

        // Slide 3: Title and Content (standard layout)
        SlideContent::new("Standard Layout")
            .add_bullet("Point 1: Title at top")
            .add_bullet("Point 2: Content below")
            .add_bullet("Point 3: Most common layout")
            .layout(SlideLayout::TitleAndContent),

        // Slide 4: Title and Big Content
        SlideContent::new("Big Content Area")
            .add_bullet("More space for content")
            .add_bullet("Smaller title area")
            .add_bullet("Good for detailed slides")
            .add_bullet("Maximizes content space")
            .layout(SlideLayout::TitleAndBigContent),

        // Slide 5: Two Column Layout
        SlideContent::new("Two Column Layout")
            .add_bullet("Left column content")
            .add_bullet("Organized side by side")
            .add_bullet("Great for comparisons")
            .layout(SlideLayout::TwoColumn),

        // Slide 6: Blank Slide
        SlideContent::new("")
            .layout(SlideLayout::Blank),

        // Slide 7: Summary with different formatting
        SlideContent::new("Summary")
            .title_size(48)
            .title_bold(true)
            .title_color("C0504D")
            .add_bullet("Layout types implemented:")
            .add_bullet("• TitleOnly - Just title")
            .add_bullet("• CenteredTitle - Title centered")
            .add_bullet("• TitleAndContent - Standard")
            .add_bullet("• TitleAndBigContent - Large content")
            .add_bullet("• TwoColumn - Side by side")
            .add_bullet("• Blank - Empty slide")
            .content_size(20)
            .layout(SlideLayout::TitleAndContent),
    ];

    let pptx_data = create_pptx_with_content("Layout Demo Presentation", slides)?;
    std::fs::write("layout_demo.pptx", pptx_data)?;
    println!("✓ Created layout_demo.pptx with 7 slides demonstrating different layouts");

    Ok(())
}

Additional examples can be found in:

• examples/edit_presentation.rs
• examples/read_presentation.rs
• examples/comprehensive_demo.rs

pub fn content_bold(self, bold: bool) -> Self

Examples found in repository

examples/styled_presentation.rs (line 72)

fn create_bold_content_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Bold Content Slide")
            .title_bold(true)
            .content_bold(true)  // Make bullets bold
            .add_bullet("Bold bullet point 1")
            .add_bullet("Bold bullet point 2")
            .add_bullet("Bold bullet point 3"),
        SlideContent::new("Regular Content")
            .title_bold(true)
            .content_bold(false)  // Regular bullets
            .add_bullet("Regular bullet point 1")
            .add_bullet("Regular bullet point 2"),
    ];

    let pptx_data = create_pptx_with_content("Bold Content Example", slides)?;
    fs::write("examples/output/bold_content.pptx", pptx_data)?;
    Ok(())
}

fn create_mixed_formatting_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Title Slide")
            .title_size(52)
            .title_bold(true)
            .content_size(24)
            .content_bold(false)
            .add_bullet("Large content text")
            .add_bullet("Still readable")
            .add_bullet("Professional look"),
        SlideContent::new("Compact Slide")
            .title_size(36)
            .title_bold(false)
            .content_size(18)
            .content_bold(true)
            .add_bullet("Smaller title")
            .add_bullet("Bold content")
            .add_bullet("Tight spacing"),
        SlideContent::new("Summary")
            .title_size(48)
            .title_bold(true)
            .content_size(32)
            .content_bold(true)
            .add_bullet("Large bold text")
            .add_bullet("High impact")
            .add_bullet("Great for emphasis"),
    ];

    let pptx_data = create_pptx_with_content("Mixed Formatting Example", slides)?;
    fs::write("examples/output/mixed_formatting.pptx", pptx_data)?;
    Ok(())
}

examples/text_styling_complete.rs (line 115)

fn create_combined_styling_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Bold & Italic & Red")
            .title_bold(true)
            .title_italic(true)
            .title_color("FF0000")
            .title_size(52)
            .add_bullet("Regular content"),
        SlideContent::new("Underlined Blue Content")
            .content_underline(true)
            .content_color("0000FF")
            .content_bold(true)
            .add_bullet("Bold, underlined, blue bullet")
            .add_bullet("Multiple effects applied"),
        SlideContent::new("Mixed Effects")
            .title_italic(true)
            .title_color("FF6600")
            .content_bold(true)
            .content_underline(true)
            .content_color("0066FF")
            .add_bullet("Title: italic, orange")
            .add_bullet("Content: bold, underlined, blue"),
        SlideContent::new("Professional Look")
            .title_bold(true)
            .title_size(48)
            .title_color("003366")
            .content_size(24)
            .add_bullet("Clean, professional styling")
            .add_bullet("Dark blue title with bold")
            .add_bullet("Larger content text"),
    ];

    let pptx_data = create_pptx_with_content("Combined Styling", slides)?;
    fs::write("examples/output/combined_styling.pptx", pptx_data)?;
    Ok(())
}

fn create_professional_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Company Presentation")
            .title_bold(true)
            .title_size(56)
            .title_color("003366")
            .content_size(32)
            .add_bullet("2025 Annual Review"),
        SlideContent::new("Key Highlights")
            .title_bold(true)
            .title_color("003366")
            .content_bold(true)
            .content_color("0066CC")
            .add_bullet("Revenue growth: +25%")
            .add_bullet("Market expansion: 3 new regions")
            .add_bullet("Team growth: +50 employees"),
        SlideContent::new("Strategic Initiatives")
            .title_italic(true)
            .title_color("FF6600")
            .content_underline(true)
            .add_bullet("Digital transformation")
            .add_bullet("Customer experience improvement")
            .add_bullet("Sustainability focus"),
        SlideContent::new("Q1 2025 Goals")
            .title_bold(true)
            .title_underline(true)
            .title_color("003366")
            .content_bold(true)
            .add_bullet("Launch new product line")
            .add_bullet("Expand to 5 new markets")
            .add_bullet("Achieve 30% revenue growth"),
        SlideContent::new("Thank You")
            .title_bold(true)
            .title_size(60)
            .title_color("003366")
            .content_italic(true)
            .content_size(28)
            .add_bullet("Questions & Discussion"),
    ];

    let pptx_data = create_pptx_with_content("Professional Presentation", slides)?;
    fs::write("examples/output/professional.pptx", pptx_data)?;
    Ok(())
}

examples/table_generation.rs (line 169)

fn create_data_table_example() -> Result<(), Box<dyn std::error::Error>> {
    let header_cells = vec![
        TableCell::new("Product").bold().background_color("1F497D"),
        TableCell::new("Revenue").bold().background_color("1F497D"),
        TableCell::new("Growth").bold().background_color("1F497D"),
    ];
    let header_row = TableRow::new(header_cells);

    let data_rows = vec![
        TableRow::new(vec![
            TableCell::new("Product A"),
            TableCell::new("$100K"),
            TableCell::new("+15%"),
        ]),
        TableRow::new(vec![
            TableCell::new("Product B"),
            TableCell::new("$150K"),
            TableCell::new("+22%"),
        ]),
        TableRow::new(vec![
            TableCell::new("Product C"),
            TableCell::new("$200K"),
            TableCell::new("+18%"),
        ]),
    ];

    let table = Table::new(
        vec![vec![header_row], data_rows].concat(),
        vec![2000000, 2000000, 1500000],
        457200,
        1400000,
    );

    let slides = vec![
        SlideContent::new("Sales Data Table")
            .title_bold(true)
            .title_size(48)
            .add_bullet("Quarterly sales figures"),
        SlideContent::new("Q1 2025 Sales")
            .table(table),
        SlideContent::new("Summary")
            .content_bold(true)
            .add_bullet("Total Revenue: $450K")
            .add_bullet("Average Growth: +18.3%")
            .add_bullet("Best Performer: Product C"),
    ];

    let pptx_data = create_pptx_with_content("Sales Data", slides)?;
    fs::write("examples/output/data_table.pptx", pptx_data)?;
    Ok(())
}

examples/edit_presentation.rs (line 95)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    println!("╔════════════════════════════════════════════════════════════╗");
    println!("║         PPTX Editing Demo                                  ║");
    println!("╚════════════════════════════════════════════════════════════╝\n");

    // =========================================================================
    // Step 1: Create an initial presentation
    // =========================================================================
    println!("📝 Step 1: Creating initial presentation...");
    
    let initial_slides = vec![
        SlideContent::new("Original Presentation")
            .layout(SlideLayout::CenteredTitle)
            .title_bold(true)
            .title_color("1F497D"),
        
        SlideContent::new("Slide 1: Introduction")
            .add_bullet("This is the original content")
            .add_bullet("Created programmatically"),
        
        SlideContent::new("Slide 2: Features")
            .add_bullet("Feature A")
            .add_bullet("Feature B")
            .add_bullet("Feature C"),
    ];
    
    let pptx_data = create_pptx_with_content("Original Presentation", initial_slides)?;
    fs::write("original.pptx", &pptx_data)?;
    println!("   ✓ Created original.pptx with 3 slides\n");

    // =========================================================================
    // Step 2: Open and inspect the presentation
    // =========================================================================
    println!("📖 Step 2: Opening presentation for editing...");
    
    let mut editor = PresentationEditor::open("original.pptx")?;
    println!("   ✓ Opened original.pptx");
    println!("   ├── Slide count: {}", editor.slide_count());
    
    // Read first slide
    let slide0 = editor.get_slide(0)?;
    println!("   └── First slide title: {:?}\n", slide0.title);

    // =========================================================================
    // Step 3: Add new slides
    // =========================================================================
    println!("➕ Step 3: Adding new slides...");
    
    // Add a new slide at the end
    let new_slide1 = SlideContent::new("New Slide: Added via Editor")
        .add_bullet("This slide was added programmatically")
        .add_bullet("Using PresentationEditor")
        .add_bullet("After the presentation was created")
        .title_color("9BBB59");
    
    let idx1 = editor.add_slide(new_slide1)?;
    println!("   ✓ Added slide at index {}", idx1);
    
    // Add another slide
    let new_slide2 = SlideContent::new("Another New Slide")
        .layout(SlideLayout::TwoColumn)
        .add_bullet("Left column item 1")
        .add_bullet("Left column item 2")
        .add_bullet("Right column item 1")
        .add_bullet("Right column item 2");
    
    let idx2 = editor.add_slide(new_slide2)?;
    println!("   ✓ Added slide at index {}", idx2);
    println!("   └── Total slides now: {}\n", editor.slide_count());

    // =========================================================================
    // Step 4: Update existing slide
    // =========================================================================
    println!("✏️  Step 4: Updating existing slide...");
    
    let updated_slide = SlideContent::new("Slide 2: Updated Features")
        .add_bullet("Feature A - Enhanced!")
        .add_bullet("Feature B - Improved!")
        .add_bullet("Feature C - Optimized!")
        .add_bullet("Feature D - NEW!")
        .title_color("C0504D")
        .content_bold(true);
    
    editor.update_slide(2, updated_slide)?;
    println!("   ✓ Updated slide at index 2\n");

    // =========================================================================
    // Step 5: Save modified presentation
    // =========================================================================
    println!("💾 Step 5: Saving modified presentation...");
    
    editor.save("modified.pptx")?;
    println!("   ✓ Saved as modified.pptx\n");

    // =========================================================================
    // Step 6: Verify the changes
    // =========================================================================
    println!("🔍 Step 6: Verifying changes...");
    
    let reader = PresentationReader::open("modified.pptx")?;
    println!("   Modified presentation:");
    println!("   ├── Slide count: {}", reader.slide_count());
    
    for i in 0..reader.slide_count() {
        let slide = reader.get_slide(i)?;
        let title = slide.title.as_deref().unwrap_or("(no title)");
        let bullets = slide.body_text.len();
        println!("   {}── Slide {}: \"{}\" ({} bullets)", 
                 if i == reader.slide_count() - 1 { "└" } else { "├" },
                 i + 1, 
                 title,
                 bullets);
    }

    // =========================================================================
    // Step 7: Demonstrate slide removal
    // =========================================================================
    println!("\n🗑️  Step 7: Demonstrating slide removal...");
    
    let mut editor2 = PresentationEditor::open("modified.pptx")?;
    println!("   Before removal: {} slides", editor2.slide_count());
    
    // Remove the last slide
    editor2.remove_slide(editor2.slide_count() - 1)?;
    println!("   ✓ Removed last slide");
    println!("   After removal: {} slides", editor2.slide_count());
    
    editor2.save("trimmed.pptx")?;
    println!("   ✓ Saved as trimmed.pptx");

    // Cleanup
    fs::remove_file("original.pptx").ok();
    fs::remove_file("modified.pptx").ok();
    fs::remove_file("trimmed.pptx").ok();

    // =========================================================================
    // Summary
    // =========================================================================
    println!("\n╔════════════════════════════════════════════════════════════╗");
    println!("║                    Demo Complete                           ║");
    println!("╠════════════════════════════════════════════════════════════╣");
    println!("║  Capabilities Demonstrated:                                ║");
    println!("║  ✓ PresentationEditor::open() - Open for editing           ║");
    println!("║  ✓ editor.add_slide() - Add new slides                     ║");
    println!("║  ✓ editor.update_slide() - Modify existing slides          ║");
    println!("║  ✓ editor.remove_slide() - Remove slides                   ║");
    println!("║  ✓ editor.save() - Save modified presentation              ║");
    println!("║  ✓ editor.get_slide() - Read slide content                 ║");
    println!("╚════════════════════════════════════════════════════════════╝");

    Ok(())
}

examples/comprehensive_demo.rs (line 117)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    println!("╔══════════════════════════════════════════════════════════════╗");
    println!("║       PPTX-RS Element Showcase - Complete Coverage           ║");
    println!("╚══════════════════════════════════════════════════════════════╝\n");

    let mut slides = Vec::new();

    // =========================================================================
    // SLIDE 1: CenteredTitle Layout + Title Formatting
    // =========================================================================
    println!("📐 Slide 1: CenteredTitle Layout + Title Formatting");
    slides.push(
        SlideContent::new("PPTX-RS Element Showcase")
            .layout(SlideLayout::CenteredTitle)
            .title_size(54)
            .title_bold(true)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 2: TitleOnly Layout
    // =========================================================================
    println!("📐 Slide 2: TitleOnly Layout");
    slides.push(
        SlideContent::new("Section: Slide Layouts")
            .layout(SlideLayout::TitleOnly)
            .title_size(48)
            .title_bold(true)
            .title_color("C0504D")
    );

    // =========================================================================
    // SLIDE 3: TitleAndContent Layout + All Text Formatting
    // =========================================================================
    println!("📝 Slide 3: TitleAndContent + Text Formatting");
    slides.push(
        SlideContent::new("Text Formatting Options")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .title_italic(true)
            .title_underline(true)
            .title_size(44)
            .add_bullet("Normal text (default)")
            .add_bullet("Bold content text")
            .add_bullet("Italic content text")
            .add_bullet("Underlined content")
            .add_bullet("Custom font size (28pt)")
            .add_bullet("Custom color (#4F81BD)")
            .content_bold(true)
            .content_italic(true)
            .content_underline(true)
            .content_size(28)
            .content_color("4F81BD")
    );

    // =========================================================================
    // SLIDE 4: TitleAndBigContent Layout
    // =========================================================================
    println!("📐 Slide 4: TitleAndBigContent Layout");
    slides.push(
        SlideContent::new("Key Highlights")
            .layout(SlideLayout::TitleAndBigContent)
            .title_color("1F497D")
            .add_bullet("Large content area for emphasis")
            .add_bullet("Perfect for key messages")
            .add_bullet("Smaller title, bigger content")
            .content_bold(true)
            .content_size(32)
    );

    // =========================================================================
    // SLIDE 5: TwoColumn Layout
    // =========================================================================
    println!("📐 Slide 5: TwoColumn Layout");
    slides.push(
        SlideContent::new("Two Column Comparison")
            .layout(SlideLayout::TwoColumn)
            .title_color("1F497D")
            .add_bullet("Left Column Item 1")
            .add_bullet("Left Column Item 2")
            .add_bullet("Left Column Item 3")
            .add_bullet("Right Column Item 1")
            .add_bullet("Right Column Item 2")
            .add_bullet("Right Column Item 3")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 6: Blank Layout
    // =========================================================================
    println!("📐 Slide 6: Blank Layout");
    slides.push(
        SlideContent::new("")
            .layout(SlideLayout::Blank)
    );

    // =========================================================================
    // SLIDE 7: Table with All Cell Styling Options
    // =========================================================================
    println!("📊 Slide 7: Table with Cell Styling");
    let styled_table = TableBuilder::new(vec![1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Header 1").bold().background_color("1F497D"),
            TableCell::new("Header 2").bold().background_color("4F81BD"),
            TableCell::new("Header 3").bold().background_color("8064A2"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Bold Cell").bold(),
            TableCell::new("Normal Cell"),
            TableCell::new("Colored").background_color("9BBB59"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Red BG").background_color("C0504D"),
            TableCell::new("Green BG").background_color("9BBB59"),
            TableCell::new("Blue BG").background_color("4F81BD"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Row 3 Col 1"),
            TableCell::new("Row 3 Col 2"),
            TableCell::new("Row 3 Col 3").bold().background_color("F79646"),
        ]))
        .position(500000, 1800000)
        .build();
    
    slides.push(
        SlideContent::new("Table with Cell Styling")
            .table(styled_table)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 8: Charts (Bar, Line, Pie)
    // =========================================================================
    println!("📈 Slide 8: Chart Types");
    
    // Create chart data structures (for demonstration)
    let _bar_chart = ChartBuilder::new("Sales by Region", ChartType::Bar)
        .categories(vec!["North", "South", "East", "West"])
        .add_series(ChartSeries::new("2023", vec![100.0, 80.0, 120.0, 90.0]))
        .add_series(ChartSeries::new("2024", vec![120.0, 95.0, 140.0, 110.0]))
        .build();
    
    let _line_chart = ChartBuilder::new("Monthly Trend", ChartType::Line)
        .categories(vec!["Jan", "Feb", "Mar", "Apr", "May", "Jun"])
        .add_series(ChartSeries::new("Revenue", vec![10.0, 12.0, 15.0, 14.0, 18.0, 22.0]))
        .build();
    
    let _pie_chart = ChartBuilder::new("Market Share", ChartType::Pie)
        .categories(vec!["Product A", "Product B", "Product C", "Others"])
        .add_series(ChartSeries::new("Share", vec![40.0, 30.0, 20.0, 10.0]))
        .build();
    
    slides.push(
        SlideContent::new("Chart Types: Bar, Line, Pie")
            .with_chart()
            .title_color("1F497D")
            .add_bullet("Bar Chart: Compare categories")
            .add_bullet("Line Chart: Show trends over time")
            .add_bullet("Pie Chart: Show proportions")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 9: Shapes with Different Fills
    // =========================================================================
    println!("🔷 Slide 9: Shapes with Fills");
    
    let rect = Shape::new(ShapeType::Rectangle, 500000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("4F81BD"))
        .with_text("Rectangle");
    
    let ellipse = Shape::new(ShapeType::Ellipse, 3000000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("9BBB59"))
        .with_text("Ellipse");
    
    let rounded = Shape::new(ShapeType::RoundedRectangle, 5500000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("C0504D"))
        .with_text("Rounded");
    
    let triangle = Shape::new(ShapeType::Triangle, 1500000, 3000000, 1500000, 1200000)
        .with_fill(ShapeFill::new("8064A2"))
        .with_text("Triangle");
    
    let diamond = Shape::new(ShapeType::Diamond, 4000000, 3000000, 1500000, 1200000)
        .with_fill(ShapeFill::new("F79646"))
        .with_text("Diamond");
    
    slides.push(
        SlideContent::new("Shape Types with Color Fills")
            .add_shape(rect)
            .add_shape(ellipse)
            .add_shape(rounded)
            .add_shape(triangle)
            .add_shape(diamond)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 10: Gradient Fills (NEW)
    // =========================================================================
    println!("🌈 Slide 10: Gradient Fills");
    
    // Horizontal gradient
    let gradient_h = Shape::new(ShapeType::Rectangle, 500000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("1565C0", "42A5F5", GradientDirection::Horizontal))
        .with_text("Horizontal");
    
    // Vertical gradient
    let gradient_v = Shape::new(ShapeType::Rectangle, 3200000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("2E7D32", "81C784", GradientDirection::Vertical))
        .with_text("Vertical");
    
    // Diagonal gradient
    let gradient_d = Shape::new(ShapeType::RoundedRectangle, 5900000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("C62828", "EF9A9A", GradientDirection::DiagonalDown))
        .with_text("Diagonal");
    
    // Three-color gradient
    let gradient_3 = Shape::new(ShapeType::Ellipse, 1800000, 3200000, 2500000, 1200000)
        .with_gradient(GradientFill::three_color("FF6F00", "FFC107", "FFEB3B", GradientDirection::Horizontal))
        .with_text("3-Color");
    
    // Custom angle gradient
    let gradient_angle = Shape::new(ShapeType::RoundedRectangle, 4800000, 3200000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("7B1FA2", "E1BEE7", GradientDirection::Angle(135)))
        .with_text("135° Angle");
    
    slides.push(
        SlideContent::new("Gradient Fills - Multiple Directions")
            .add_shape(gradient_h)
            .add_shape(gradient_v)
            .add_shape(gradient_d)
            .add_shape(gradient_3)
            .add_shape(gradient_angle)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 11: Transparency (NEW)
    // =========================================================================
    println!("👻 Slide 11: Transparency Effects");
    
    // Base shape (fully opaque)
    let base = Shape::new(ShapeType::Rectangle, 1000000, 1800000, 3000000, 2000000)
        .with_fill(ShapeFill::new("1565C0"))
        .with_text("Base (100%)");
    
    // 25% transparent overlay
    let trans_25 = Shape::new(ShapeType::Rectangle, 2000000, 2200000, 2500000, 1500000)
        .with_fill(ShapeFill::new("F44336").with_transparency(25))
        .with_line(ShapeLine::new("B71C1C", 25400))
        .with_text("25% Transparent");
    
    // 50% transparent overlay
    let trans_50 = Shape::new(ShapeType::Ellipse, 4500000, 1800000, 2500000, 2000000)
        .with_fill(ShapeFill::new("4CAF50").with_transparency(50))
        .with_line(ShapeLine::new("1B5E20", 25400))
        .with_text("50% Transparent");
    
    // 75% transparent overlay
    let trans_75 = Shape::new(ShapeType::RoundedRectangle, 5500000, 2500000, 2500000, 1500000)
        .with_fill(ShapeFill::new("FF9800").with_transparency(75))
        .with_line(ShapeLine::new("E65100", 25400))
        .with_text("75% Transparent");
    
    slides.push(
        SlideContent::new("Transparency Effects - Overlapping Shapes")
            .add_shape(base)
            .add_shape(trans_25)
            .add_shape(trans_50)
            .add_shape(trans_75)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 12: Styled Connectors (NEW)
    // =========================================================================
    println!("🔗 Slide 12: Styled Connectors");
    
    // Create shapes to connect
    let box1 = Shape::new(ShapeType::RoundedRectangle, 500000, 1800000, 1800000, 800000)
        .with_id(100)
        .with_fill(ShapeFill::new("1565C0"))
        .with_text("Start");
    
    let box2 = Shape::new(ShapeType::RoundedRectangle, 3500000, 1800000, 1800000, 800000)
        .with_id(101)
        .with_fill(ShapeFill::new("2E7D32"))
        .with_text("Process");
    
    let box3 = Shape::new(ShapeType::RoundedRectangle, 6500000, 1800000, 1800000, 800000)
        .with_id(102)
        .with_fill(ShapeFill::new("C62828"))
        .with_text("End");
    
    // Straight connector with arrow
    let conn1 = Connector::straight(2300000, 2200000, 3500000, 2200000)
        .with_line(ConnectorLine::new("1565C0", 25400))
        .with_end_arrow(ArrowType::Triangle)
        .with_arrow_size(ArrowSize::Large);
    
    // Elbow connector with stealth arrow
    let conn2 = Connector::elbow(5300000, 2200000, 6500000, 2200000)
        .with_line(ConnectorLine::new("2E7D32", 38100).with_dash(LineDash::Dash))
        .with_end_arrow(ArrowType::Stealth)
        .with_arrow_size(ArrowSize::Medium);
    
    // Curved connector examples
    let box4 = Shape::new(ShapeType::Ellipse, 1000000, 3200000, 1500000, 800000)
        .with_id(103)
        .with_fill(ShapeFill::new("7B1FA2"))
        .with_text("A");
    
    let box5 = Shape::new(ShapeType::Ellipse, 4000000, 3200000, 1500000, 800000)
        .with_id(104)
        .with_fill(ShapeFill::new("00838F"))
        .with_text("B");
    
    let box6 = Shape::new(ShapeType::Ellipse, 7000000, 3200000, 1500000, 800000)
        .with_id(105)
        .with_fill(ShapeFill::new("EF6C00"))
        .with_text("C");
    
    // Curved connector with diamond arrow
    let conn3 = Connector::curved(2500000, 3600000, 4000000, 3600000)
        .with_line(ConnectorLine::new("7B1FA2", 19050).with_dash(LineDash::DashDot))
        .with_arrows(ArrowType::Oval, ArrowType::Diamond);
    
    // Dotted connector
    let conn4 = Connector::straight(5500000, 3600000, 7000000, 3600000)
        .with_line(ConnectorLine::new("00838F", 12700).with_dash(LineDash::Dot))
        .with_end_arrow(ArrowType::Open);
    
    slides.push(
        SlideContent::new("Styled Connectors - Types, Arrows, Dashes")
            .add_shape(box1)
            .add_shape(box2)
            .add_shape(box3)
            .add_shape(box4)
            .add_shape(box5)
            .add_shape(box6)
            .add_connector(conn1)
            .add_connector(conn2)
            .add_connector(conn3)
            .add_connector(conn4)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 13: Images
    // =========================================================================
    println!("🖼️  Slide 13: Image Placeholders");
    
    let img1 = Image::new("logo.png", 2500000, 1800000, "png")
        .position(500000, 1600000);
    let img2 = Image::new("photo.jpg", 2500000, 1800000, "jpg")
        .position(3500000, 1600000);
    let img3 = Image::new("diagram.png", 2000000, 1800000, "png")
        .position(6500000, 1600000);
    
    slides.push(
        SlideContent::new("Image Placeholders")
            .add_image(img1)
            .add_image(img2)
            .add_image(img3)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 11: Advanced Table with Borders & Alignment (NEW)
    // =========================================================================
    println!("📊 Slide 11: Advanced Table (borders, alignment, merged cells)");
    
    // Build advanced table using generator's TableBuilder with alignment
    let advanced_table = TableBuilder::new(vec![2000000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2024 Financial Report").bold().background_color("1F4E79").text_color("FFFFFF").align_center().font_size(14),
            TableCell::new("").background_color("1F4E79"),
            TableCell::new("").background_color("1F4E79"),
            TableCell::new("").background_color("1F4E79"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Category").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Revenue").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Expenses").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Profit").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Product Sales").text_color("000000").align_left(),
            TableCell::new("$1,250,000").text_color("2E7D32").align_right(),
            TableCell::new("$450,000").text_color("C62828").align_right(),
            TableCell::new("$800,000").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Services").text_color("000000").align_left(),
            TableCell::new("$890,000").text_color("2E7D32").align_right(),
            TableCell::new("$320,000").text_color("C62828").align_right(),
            TableCell::new("$570,000").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Total").bold().background_color("E7E6E6").text_color("000000").align_left(),
            TableCell::new("$2,140,000").bold().background_color("E7E6E6").text_color("000000").align_right(),
            TableCell::new("$770,000").bold().background_color("E7E6E6").text_color("000000").align_right(),
            TableCell::new("$1,370,000").bold().background_color("C6EFCE").text_color("006100").align_right(),
        ]))
        .position(300000, 1600000)
        .build();
    
    slides.push(
        SlideContent::new("Financial Report - Advanced Table")
            .table(advanced_table)
            .title_color("1F4E79")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 12: Comparison Matrix Table (NEW)
    // =========================================================================
    println!("📊 Slide 12: Comparison Matrix Table");
    
    let comparison_table = TableBuilder::new(vec![2000000, 1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Feature").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Basic").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Pro").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Enterprise").bold().background_color("4472C4").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Storage").text_color("000000"),
            TableCell::new("5 GB").text_color("000000"),
            TableCell::new("50 GB").text_color("000000"),
            TableCell::new("Unlimited").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Users").text_color("000000"),
            TableCell::new("1").text_color("000000"),
            TableCell::new("10").text_color("000000"),
            TableCell::new("Unlimited").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Support").text_color("000000"),
            TableCell::new("Email").text_color("000000"),
            TableCell::new("24/7 Chat").text_color("000000"),
            TableCell::new("Dedicated").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("API Access").text_color("000000"),
            TableCell::new("No").text_color("C62828"),
            TableCell::new("Yes").text_color("2E7D32"),
            TableCell::new("Yes + Priority").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Price/month").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$9").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$29").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$99").bold().background_color("F2F2F2").text_color("000000"),
        ]))
        .position(500000, 1600000)
        .build();
    
    slides.push(
        SlideContent::new("Pricing Comparison Matrix")
            .table(comparison_table)
            .title_color("4472C4")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 13: Process Flow with Shapes (NEW - SmartArt-like)
    // =========================================================================
    println!("🔷 Slide 13: Process Flow (SmartArt-style)");
    
    // Create process flow using shapes
    let step1 = Shape::new(ShapeType::RoundedRectangle, 300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("1. Research");
    let arrow1 = Shape::new(ShapeType::RightArrow, 1800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step2 = Shape::new(ShapeType::RoundedRectangle, 2300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("2. Design");
    let arrow2 = Shape::new(ShapeType::RightArrow, 3800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step3 = Shape::new(ShapeType::RoundedRectangle, 4300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("3. Develop");
    let arrow3 = Shape::new(ShapeType::RightArrow, 5800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step4 = Shape::new(ShapeType::RoundedRectangle, 6300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("5B9BD5"))
        .with_text("4. Deploy");
    
    slides.push(
        SlideContent::new("Development Process Flow")
            .add_shape(step1)
            .add_shape(arrow1)
            .add_shape(step2)
            .add_shape(arrow2)
            .add_shape(step3)
            .add_shape(arrow3)
            .add_shape(step4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 14: Organization Chart with Shapes (NEW)
    // =========================================================================
    println!("🔷 Slide 14: Organization Chart");
    
    // CEO at top
    let ceo = Shape::new(ShapeType::RoundedRectangle, 3500000, 1400000, 2000000, 600000)
        .with_fill(ShapeFill::new("1F4E79"))
        .with_text("CEO");
    
    // Vertical line from CEO
    let line1 = Shape::new(ShapeType::Rectangle, 4450000, 2000000, 100000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // Horizontal connector
    let hline = Shape::new(ShapeType::Rectangle, 1950000, 2400000, 5100000, 50000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // CTO, CFO, COO
    let cto = Shape::new(ShapeType::RoundedRectangle, 1000000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("CTO");
    let cfo = Shape::new(ShapeType::RoundedRectangle, 3600000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("CFO");
    let coo = Shape::new(ShapeType::RoundedRectangle, 6200000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("COO");
    
    // Vertical lines to departments
    let vline1 = Shape::new(ShapeType::Rectangle, 1850000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let vline2 = Shape::new(ShapeType::Rectangle, 4450000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let vline3 = Shape::new(ShapeType::Rectangle, 7050000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // Teams under CTO
    let eng = Shape::new(ShapeType::Rectangle, 500000, 3300000, 1200000, 400000)
        .with_fill(ShapeFill::new("BDD7EE"))
        .with_text("Engineering");
    let product = Shape::new(ShapeType::Rectangle, 1800000, 3300000, 1200000, 400000)
        .with_fill(ShapeFill::new("BDD7EE"))
        .with_text("Product");
    
    slides.push(
        SlideContent::new("Organization Structure")
            .add_shape(ceo)
            .add_shape(line1)
            .add_shape(hline)
            .add_shape(cto)
            .add_shape(cfo)
            .add_shape(coo)
            .add_shape(vline1)
            .add_shape(vline2)
            .add_shape(vline3)
            .add_shape(eng)
            .add_shape(product)
            .title_color("1F4E79")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 15: PDCA Cycle Diagram (NEW)
    // =========================================================================
    println!("🔷 Slide 15: PDCA Cycle Diagram");
    
    // Four quadrants for PDCA
    let plan = Shape::new(ShapeType::RoundedRectangle, 1500000, 1600000, 2500000, 1500000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("PLAN\n\nDefine goals\nand strategy");
    let do_box = Shape::new(ShapeType::RoundedRectangle, 4500000, 1600000, 2500000, 1500000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("DO\n\nImplement\nthe plan");
    let check = Shape::new(ShapeType::RoundedRectangle, 4500000, 3300000, 2500000, 1500000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("CHECK\n\nMeasure\nresults");
    let act = Shape::new(ShapeType::RoundedRectangle, 1500000, 3300000, 2500000, 1500000)
        .with_fill(ShapeFill::new("FFC000"))
        .with_text("ACT\n\nAdjust and\nimprove");
    
    // Arrows between quadrants
    let arr1 = Shape::new(ShapeType::RightArrow, 4100000, 2100000, 300000, 300000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr2 = Shape::new(ShapeType::DownArrow, 5600000, 3200000, 300000, 200000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr3 = Shape::new(ShapeType::LeftArrow, 4100000, 3800000, 300000, 300000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr4 = Shape::new(ShapeType::UpArrow, 2600000, 3200000, 300000, 200000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    slides.push(
        SlideContent::new("PDCA Continuous Improvement Cycle")
            .add_shape(plan)
            .add_shape(do_box)
            .add_shape(check)
            .add_shape(act)
            .add_shape(arr1)
            .add_shape(arr2)
            .add_shape(arr3)
            .add_shape(arr4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 16: Pyramid Diagram (Maslow's Hierarchy) (NEW)
    // =========================================================================
    println!("🔷 Slide 16: Pyramid Diagram");
    
    // Build pyramid from bottom to top
    let level5 = Shape::new(ShapeType::Trapezoid, 500000, 4000000, 8000000, 600000)
        .with_fill(ShapeFill::new("C00000"))
        .with_text("Physiological Needs - Food, Water, Shelter");
    let level4 = Shape::new(ShapeType::Trapezoid, 1000000, 3400000, 7000000, 600000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Safety Needs - Security, Stability");
    let level3 = Shape::new(ShapeType::Trapezoid, 1500000, 2800000, 6000000, 600000)
        .with_fill(ShapeFill::new("FFC000"))
        .with_text("Love & Belonging - Relationships");
    let level2 = Shape::new(ShapeType::Trapezoid, 2000000, 2200000, 5000000, 600000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Esteem - Achievement, Respect");
    let level1 = Shape::new(ShapeType::Triangle, 2500000, 1500000, 4000000, 700000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Self-Actualization");
    
    slides.push(
        SlideContent::new("Maslow's Hierarchy of Needs")
            .add_shape(level5)
            .add_shape(level4)
            .add_shape(level3)
            .add_shape(level2)
            .add_shape(level1)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 17: Venn Diagram (NEW)
    // =========================================================================
    println!("🔷 Slide 17: Venn Diagram");
    
    // Three overlapping circles
    let circle1 = Shape::new(ShapeType::Ellipse, 1500000, 1800000, 3000000, 3000000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Skills");
    let circle2 = Shape::new(ShapeType::Ellipse, 3500000, 1800000, 3000000, 3000000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Passion");
    let circle3 = Shape::new(ShapeType::Ellipse, 2500000, 3200000, 3000000, 3000000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Market Need");
    
    // Center label
    let center = Shape::new(ShapeType::Ellipse, 3200000, 2800000, 1600000, 800000)
        .with_fill(ShapeFill::new("FFFFFF"))
        .with_text("IKIGAI");
    
    slides.push(
        SlideContent::new("Finding Your Ikigai - Venn Diagram")
            .add_shape(circle1)
            .add_shape(circle2)
            .add_shape(circle3)
            .add_shape(center)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 18: Timeline/Roadmap (NEW)
    // =========================================================================
    println!("📊 Slide 18: Project Timeline");
    
    let timeline_table = TableBuilder::new(vec![1500000, 1500000, 1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q2 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q3 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q4 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q1 2025").bold().background_color("4472C4").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Research\n& Planning").background_color("BDD7EE").text_color("1F497D"),
            TableCell::new("Design\nPhase").background_color("BDD7EE").text_color("1F497D"),
            TableCell::new("Development\nSprint 1-3").background_color("C6EFCE").text_color("006100"),
            TableCell::new("Testing\n& QA").background_color("FCE4D6").text_color("C65911"),
            TableCell::new("Launch\n& Support").background_color("E2EFDA").text_color("375623"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("✓ Complete").bold().text_color("2E7D32"),
            TableCell::new("✓ Complete").bold().text_color("2E7D32"),
            TableCell::new("In Progress").text_color("ED7D31"),
            TableCell::new("Planned").text_color("7F7F7F"),
            TableCell::new("Planned").text_color("7F7F7F"),
        ]))
        .position(300000, 2000000)
        .build();
    
    slides.push(
        SlideContent::new("Project Roadmap 2024-2025")
            .table(timeline_table)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 19: Dashboard Summary (NEW)
    // =========================================================================
    println!("🔷 Slide 19: Dashboard with KPIs");
    
    // KPI boxes
    let kpi1 = Shape::new(ShapeType::RoundedRectangle, 300000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Revenue\n\n$2.14M\n+15% YoY");
    let kpi2 = Shape::new(ShapeType::RoundedRectangle, 2500000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Customers\n\n12,450\n+22% YoY");
    let kpi3 = Shape::new(ShapeType::RoundedRectangle, 4700000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("NPS Score\n\n72\n+8 pts");
    let kpi4 = Shape::new(ShapeType::RoundedRectangle, 6900000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("5B9BD5"))
        .with_text("Retention\n\n94%\n+3% YoY");
    
    // Status indicators
    let status1 = Shape::new(ShapeType::Ellipse, 1800000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    let status2 = Shape::new(ShapeType::Ellipse, 4000000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    let status3 = Shape::new(ShapeType::Ellipse, 6200000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("FFC000"));
    let status4 = Shape::new(ShapeType::Ellipse, 8400000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    
    slides.push(
        SlideContent::new("Executive Dashboard - Q1 2024")
            .add_shape(kpi1)
            .add_shape(kpi2)
            .add_shape(kpi3)
            .add_shape(kpi4)
            .add_shape(status1)
            .add_shape(status2)
            .add_shape(status3)
            .add_shape(status4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 20: Summary Slide (NEW)
    // =========================================================================
    println!("📝 Slide 20: Summary with Speaker Notes");
    
    slides.push(
        SlideContent::new("Summary & Next Steps")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Completed: Research, Design, Initial Development")
            .add_bullet("In Progress: Sprint 3 Development")
            .add_bullet("Next: QA Testing Phase (Q4 2024)")
            .add_bullet("Launch Target: Q1 2025")
            .add_bullet("Key Risks: Resource constraints, Timeline pressure")
            .content_size(24)
            .notes("Speaker Notes:\n\n1. Emphasize the progress made\n2. Highlight key achievements\n3. Address any concerns about timeline\n4. Open for Q&A")
    );

    // =========================================================================
    // SLIDE 21: Bullet Styles (NEW v0.2.1)
    // =========================================================================
    println!("🔢 Slide 21: Bullet Styles (NEW)");
    
    // Numbered list
    slides.push(
        SlideContent::new("Bullet Styles - Numbered List")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .with_bullet_style(BulletStyle::Number)
            .add_bullet("First numbered item")
            .add_bullet("Second numbered item")
            .add_bullet("Third numbered item")
            .add_bullet("Fourth numbered item")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 22: Lettered Lists (NEW v0.2.1)
    // =========================================================================
    println!("🔤 Slide 22: Lettered Lists (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Lettered Lists")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_lettered("Option A - First choice")
            .add_lettered("Option B - Second choice")
            .add_lettered("Option C - Third choice")
            .add_lettered("Option D - Fourth choice")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 23: Roman Numerals (NEW v0.2.1)
    // =========================================================================
    println!("🏛️ Slide 23: Roman Numerals (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Roman Numerals")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .with_bullet_style(BulletStyle::RomanUpper)
            .add_bullet("Chapter I - Introduction")
            .add_bullet("Chapter II - Background")
            .add_bullet("Chapter III - Methodology")
            .add_bullet("Chapter IV - Results")
            .add_bullet("Chapter V - Conclusion")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 24: Custom Bullets (NEW v0.2.1)
    // =========================================================================
    println!("⭐ Slide 24: Custom Bullets (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Custom Characters")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_styled_bullet("Star bullet point", BulletStyle::Custom('★'))
            .add_styled_bullet("Arrow bullet point", BulletStyle::Custom('→'))
            .add_styled_bullet("Check bullet point", BulletStyle::Custom('✓'))
            .add_styled_bullet("Diamond bullet point", BulletStyle::Custom('◆'))
            .add_styled_bullet("Heart bullet point", BulletStyle::Custom('♥'))
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 25: Sub-bullets / Hierarchy (NEW v0.2.1)
    // =========================================================================
    println!("📊 Slide 25: Sub-bullets Hierarchy (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Hierarchical Lists")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Main Topic 1")
            .add_sub_bullet("Supporting detail A")
            .add_sub_bullet("Supporting detail B")
            .add_bullet("Main Topic 2")
            .add_sub_bullet("Supporting detail C")
            .add_sub_bullet("Supporting detail D")
            .add_bullet("Main Topic 3")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 26: Text Enhancements (NEW v0.2.1)
    // =========================================================================
    println!("✏️ Slide 26: Text Enhancements (NEW)");
    
    // Use BulletPoint with formatting
    let strikethrough_bullet = BulletPoint::new("Strikethrough: This text is crossed out").strikethrough();
    let highlight_bullet = BulletPoint::new("Highlight: Yellow background for emphasis").highlight("FFFF00");
    let subscript_bullet = BulletPoint::new("Subscript: H₂O - for chemical formulas").subscript();
    let superscript_bullet = BulletPoint::new("Superscript: x² - for math expressions").superscript();
    let bold_colored = BulletPoint::new("Combined: Bold + Red color").bold().color("FF0000");
    
    let mut text_enhancements_slide = SlideContent::new("Text Enhancements - New Formatting")
        .layout(SlideLayout::TitleAndContent)
        .title_color("1F497D")
        .title_bold(true)
        .content_size(24);
    text_enhancements_slide.bullets.push(strikethrough_bullet);
    text_enhancements_slide.bullets.push(highlight_bullet);
    text_enhancements_slide.bullets.push(subscript_bullet);
    text_enhancements_slide.bullets.push(superscript_bullet);
    text_enhancements_slide.bullets.push(bold_colored);
    
    slides.push(text_enhancements_slide);

    // =========================================================================
    // SLIDE 27: Font Size Presets (NEW v0.2.1)
    // =========================================================================
    println!("🔤 Slide 27: Font Size Presets (NEW)");
    
    // Demonstrate different font sizes per bullet
    let large_bullet = BulletPoint::new(&format!("LARGE: {}pt - Extra large text", font_sizes::LARGE)).font_size(font_sizes::LARGE);
    let heading_bullet = BulletPoint::new(&format!("HEADING: {}pt - Section headers", font_sizes::HEADING)).font_size(font_sizes::HEADING);
    let body_bullet = BulletPoint::new(&format!("BODY: {}pt - Regular content", font_sizes::BODY)).font_size(font_sizes::BODY);
    let small_bullet = BulletPoint::new(&format!("SMALL: {}pt - Smaller text", font_sizes::SMALL)).font_size(font_sizes::SMALL);
    let caption_bullet = BulletPoint::new(&format!("CAPTION: {}pt - Captions and notes", font_sizes::CAPTION)).font_size(font_sizes::CAPTION);
    
    let mut font_size_slide = SlideContent::new("Font Size Presets - Each line different size")
        .layout(SlideLayout::TitleAndContent)
        .title_color("1F497D")
        .title_bold(true)
        .title_size(font_sizes::TITLE);
    font_size_slide.bullets.push(large_bullet);
    font_size_slide.bullets.push(heading_bullet);
    font_size_slide.bullets.push(body_bullet);
    font_size_slide.bullets.push(small_bullet);
    font_size_slide.bullets.push(caption_bullet);
    
    slides.push(font_size_slide);

    // =========================================================================
    // SLIDE 28: Theme Colors (NEW v0.2.1)
    // =========================================================================
    println!("🎨 Slide 28: Theme Colors (NEW)");
    
    // Create shapes with theme colors
    let corporate_shape = Shape::new(ShapeType::Rectangle, 500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::CORPORATE.primary))
        .with_text("Corporate");
    
    let modern_shape = Shape::new(ShapeType::Rectangle, 2500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::MODERN.primary))
        .with_text("Modern");
    
    let vibrant_shape = Shape::new(ShapeType::Rectangle, 4500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::VIBRANT.primary))
        .with_text("Vibrant");
    
    let dark_shape = Shape::new(ShapeType::Rectangle, 6500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::DARK.primary))
        .with_text("Dark");
    
    let nature_shape = Shape::new(ShapeType::Rectangle, 500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::NATURE.primary))
        .with_text("Nature");
    
    let tech_shape = Shape::new(ShapeType::Rectangle, 2500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::TECH.primary))
        .with_text("Tech");
    
    let carbon_shape = Shape::new(ShapeType::Rectangle, 4500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::CARBON.primary))
        .with_text("Carbon");
    
    slides.push(
        SlideContent::new("Theme Color Palettes")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_shape(corporate_shape)
            .add_shape(modern_shape)
            .add_shape(vibrant_shape)
            .add_shape(dark_shape)
            .add_shape(nature_shape)
            .add_shape(tech_shape)
            .add_shape(carbon_shape)
    );

    // =========================================================================
    // SLIDE 29: Material & Carbon Design Colors (NEW v0.2.1)
    // =========================================================================
    println!("🌈 Slide 29: Material & Carbon Colors (NEW)");
    
    // Material Design colors
    let material_red = Shape::new(ShapeType::Rectangle, 500000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_RED))
        .with_text("M-Red");
    
    let material_blue = Shape::new(ShapeType::Rectangle, 1900000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_BLUE))
        .with_text("M-Blue");
    
    let material_green = Shape::new(ShapeType::Rectangle, 3300000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_GREEN))
        .with_text("M-Green");
    
    let material_orange = Shape::new(ShapeType::Rectangle, 4700000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_ORANGE))
        .with_text("M-Orange");
    
    let material_purple = Shape::new(ShapeType::Rectangle, 6100000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_PURPLE))
        .with_text("M-Purple");
    
    // Carbon Design colors
    let carbon_blue = Shape::new(ShapeType::Rectangle, 500000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_BLUE_60))
        .with_text("C-Blue");
    
    let carbon_green = Shape::new(ShapeType::Rectangle, 1900000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_GREEN_50))
        .with_text("C-Green");
    
    let carbon_red = Shape::new(ShapeType::Rectangle, 3300000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_RED_60))
        .with_text("C-Red");
    
    let carbon_purple = Shape::new(ShapeType::Rectangle, 4700000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_PURPLE_60))
        .with_text("C-Purple");
    
    let carbon_gray = Shape::new(ShapeType::Rectangle, 6100000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_GRAY_100))
        .with_text("C-Gray");
    
    slides.push(
        SlideContent::new("Material & Carbon Design Colors")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_shape(material_red)
            .add_shape(material_blue)
            .add_shape(material_green)
            .add_shape(material_orange)
            .add_shape(material_purple)
            .add_shape(carbon_blue)
            .add_shape(carbon_green)
            .add_shape(carbon_red)
            .add_shape(carbon_purple)
            .add_shape(carbon_gray)
    );

    // =========================================================================
    // SLIDE 30: Image from Base64 (NEW v0.2.1)
    // =========================================================================
    println!("🖼️ Slide 30: Image from Base64 (NEW)");
    
    // 1x1 red PNG pixel in base64
    let _red_pixel_base64 = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8DwHwAFBQIAX8jx0gAAAABJRU5ErkJggg==";
    
    // Create image from base64 (demonstrating the API)
    let _base64_image = ImageBuilder::from_base64(_red_pixel_base64, 914400, 914400, "PNG")
        .position(4000000, 2500000)
        .build();
    
    slides.push(
        SlideContent::new("Image Loading - New Methods")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Image::new(path) - Load from file path")
            .add_bullet("Image::from_base64(data) - Load from base64 string")
            .add_bullet("Image::from_bytes(data) - Load from raw bytes")
            .add_bullet("ImageBuilder for fluent API configuration")
            .add_bullet("Built-in base64 decoder (no external deps)")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 31: Feature Summary (NEW v0.2.1)
    // =========================================================================
    println!("📋 Slide 31: v0.2.1 Feature Summary (NEW)");
    
    slides.push(
        SlideContent::new("New Features in v0.2.1")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_numbered("BulletStyle: Number, Letter, Roman, Custom")
            .add_numbered("TextFormat: Strikethrough, Highlight")
            .add_numbered("TextFormat: Subscript, Superscript")
            .add_numbered("Font size presets in prelude")
            .add_numbered("Image::from_base64 and from_bytes")
            .add_numbered("Theme color palettes (7 themes)")
            .add_numbered("Material & Carbon Design colors")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 32: Slide Show Settings - Comparison Table (REAL: embedded in presProps.xml)
    // =========================================================================
    println!("🎬 Slide 34: Slide Show Settings (Visual)");

    let show_speaker = SlideShowSettings::new().pen_color(PenColor::red());
    let show_kiosk = SlideShowSettings::kiosk();
    let _show_range = SlideShowSettings::new()
        .show_type(ShowType::Browsed)
        .slide_range(SlideRange::Range { start: 1, end: 10 })
        .without_animation(true);
    let _speaker_xml = show_speaker.to_xml();
    let _kiosk_xml = show_kiosk.to_xml();

    let show_table = TableBuilder::new(vec![2000000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Setting").bold().background_color("1F4E79").text_color("FFFFFF"),
            TableCell::new("Speaker").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Kiosk").bold().background_color("ED7D31").text_color("FFFFFF"),
            TableCell::new("Browsed").bold().background_color("70AD47").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Loop").bold().background_color("D6E4F0"),
            TableCell::new("No"), TableCell::new("Yes").bold().text_color("2E7D32"),
            TableCell::new("No"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Narration").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("No").text_color("C62828"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Animation").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("Yes"),
            TableCell::new("No").text_color("C62828"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Timings").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("Auto"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Slide Range").bold().background_color("D6E4F0"),
            TableCell::new("All"), TableCell::new("All"),
            TableCell::new("1-10"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Pen Color").bold().background_color("D6E4F0"),
            TableCell::new("Red").text_color("FF0000"),
            TableCell::new("Red").text_color("FF0000"),
            TableCell::new("Red").text_color("FF0000"),
        ]))
        .position(300000, 1600000)
        .build();

    // Mode icons
    let icon_speaker = Shape::new(ShapeType::RoundedRectangle, 300000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Speaker: Full control");
    let icon_kiosk = Shape::new(ShapeType::RoundedRectangle, 3100000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Kiosk: Auto-loop");
    let icon_browsed = Shape::new(ShapeType::RoundedRectangle, 5900000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Browsed: Scrollbar");

    slides.push(
        SlideContent::new("Slide Show Settings - Mode Comparison")
            .table(show_table)
            .add_shape(icon_speaker)
            .add_shape(icon_kiosk)
            .add_shape(icon_browsed)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 35: Print Settings - Visual Handout Grid
    // =========================================================================
    println!("🖨️  Slide 35: Print Settings & Handouts (Visual)");

    let print = PrintSettings::new()
        .print_what(PrintWhat::Handouts)
        .color_mode(PrintColorMode::Grayscale)
        .handout_layout(GenHandoutLayout::SlidesPerPage6)
        .frame_slides(true)
        .header("Q1 2025 Strategy Review")
        .footer("Confidential - Internal Use Only")
        .print_date(true)
        .print_page_numbers(true);
    let _prnpr_xml = print.to_prnpr_xml();
    let _handout_xml = print.to_handout_master_xml();

    // Visual: 6-slide handout grid (2 cols x 3 rows)
    let hdr = Shape::new(ShapeType::Rectangle, 300000, 1500000, 4200000, 300000)
        .with_fill(ShapeFill::new("E7E6E6"))
        .with_text("Q1 2025 Strategy Review");
    // Row 1
    let s1 = Shape::new(ShapeType::Rectangle, 400000, 2000000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 1");
    let s2 = Shape::new(ShapeType::Rectangle, 2500000, 2000000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 2");
    // Row 2
    let s3 = Shape::new(ShapeType::Rectangle, 400000, 3200000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 3");
    let s4 = Shape::new(ShapeType::Rectangle, 2500000, 3200000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 4");
    // Row 3
    let s5 = Shape::new(ShapeType::Rectangle, 400000, 4400000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 5");
    let s6 = Shape::new(ShapeType::Rectangle, 2500000, 4400000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 6");
    let ftr = Shape::new(ShapeType::Rectangle, 300000, 5600000, 4200000, 300000)
        .with_fill(ShapeFill::new("E7E6E6"))
        .with_text("Confidential - Internal Use Only");

    // Settings summary table on the right
    let print_table = TableBuilder::new(vec![1800000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Print Settings").bold().background_color("1F4E79").text_color("FFFFFF"),
            TableCell::new("").background_color("1F4E79"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Print What").bold().background_color("D6E4F0"),
            TableCell::new("Handouts"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Color Mode").bold().background_color("D6E4F0"),
            TableCell::new("Grayscale"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Layout").bold().background_color("D6E4F0"),
            TableCell::new("6 slides/page"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Frame Slides").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Date").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Page Numbers").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .position(5000000, 1800000)
        .build();

    slides.push(
        SlideContent::new("Print Handout - 6 Slides Per Page")
            .table(print_table)
            .add_shape(hdr)
            .add_shape(s1).add_shape(s2)
            .add_shape(s3).add_shape(s4)
            .add_shape(s5).add_shape(s6)
            .add_shape(ftr)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 36: Advanced Table Merging - Actual Merged Table
    // =========================================================================
    println!("📊 Slide 36: Advanced Table Merging (Visual)");

    // Use TableMergeMap to compute states, then build a visual table
    let mut merge_map = TableMergeMap::new(5, 4);
    merge_map.merge_cells(0, 0, 1, 4).unwrap(); // Title row spans all 4 cols
    merge_map.merge_cells(1, 0, 2, 1).unwrap(); // "Products" spans 2 rows
    merge_map.merge_cells(3, 0, 2, 1).unwrap(); // "Services" spans 2 rows

    // Show merge state labels
    let state_00 = merge_map.cell_state(0, 0); // Anchor gridSpan=4
    let state_01 = merge_map.cell_state(0, 1); // HMerge
    let state_10 = merge_map.cell_state(1, 0); // Anchor rowSpan=2
    let state_20 = merge_map.cell_state(2, 0); // VMerge
    println!("   ├── (0,0): {}", state_00.to_xml_attrs().trim());
    println!("   ├── (0,1): {}", state_01.to_xml_attrs().trim());
    println!("   ├── (1,0): {}", state_10.to_xml_attrs().trim());
    println!("   └── (2,0): {}", state_20.to_xml_attrs().trim());

    // Build the table with REAL merge attributes (gridSpan, rowSpan, hMerge, vMerge)
    let merge_table = TableBuilder::new(vec![1500000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2025 Revenue Report").bold().background_color("1F4E79").text_color("FFFFFF").grid_span(4),
            TableCell::new("").background_color("1F4E79").h_merge(),
            TableCell::new("").background_color("1F4E79").h_merge(),
            TableCell::new("").background_color("1F4E79").h_merge(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Products").bold().background_color("BDD7EE").text_color("1F497D").row_span(2),
            TableCell::new("Hardware").background_color("E2EFDA"),
            TableCell::new("$450,000").text_color("2E7D32").align_right(),
            TableCell::new("+12%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("").background_color("BDD7EE").v_merge(),
            TableCell::new("Software").background_color("E2EFDA"),
            TableCell::new("$680,000").text_color("2E7D32").align_right(),
            TableCell::new("+25%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Services").bold().background_color("FCE4D6").text_color("C65911").row_span(2),
            TableCell::new("Consulting").background_color("FFF2CC"),
            TableCell::new("$320,000").text_color("2E7D32").align_right(),
            TableCell::new("+8%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("").background_color("FCE4D6").v_merge(),
            TableCell::new("Support").background_color("FFF2CC"),
            TableCell::new("$190,000").text_color("2E7D32").align_right(),
            TableCell::new("+5%").bold().text_color("2E7D32").align_right(),
        ]))
        .position(300000, 1600000)
        .build();

    // Legend shapes
    let legend_anchor = Shape::new(ShapeType::RoundedRectangle, 300000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Anchor (gridSpan/rowSpan)");
    let legend_hmerge = Shape::new(ShapeType::RoundedRectangle, 2500000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("hMerge (col covered)");
    let legend_vmerge = Shape::new(ShapeType::RoundedRectangle, 4700000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("vMerge (row covered)");
    let legend_normal = Shape::new(ShapeType::RoundedRectangle, 6900000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"))
        .with_text("Normal (no merge)");

    slides.push(
        SlideContent::new("Advanced Table Merging - Merged Cells")
            .table(merge_table)
            .add_shape(legend_anchor)
            .add_shape(legend_hmerge)
            .add_shape(legend_vmerge)
            .add_shape(legend_normal)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // Build PresentationSettings with all advanced features
    // =========================================================================
    println!("\n⚙️  Building Presentation Settings...");

    // Slide show settings (embedded in presProps.xml as <p:showPr>)
    let show_settings = SlideShowSettings::new()
        .show_type(ShowType::Speaker)
        .pen_color(PenColor::red())
        .use_timings(true);
    println!("   ├── Slide Show: Speaker mode, red pen, timings enabled");
    println!("   │   └── XML: {} bytes", show_settings.to_xml().len());

    // Print settings (embedded in presProps.xml as <p:prnPr>)
    let print_settings = PrintSettings::new()
        .print_what(PrintWhat::Handouts)
        .color_mode(PrintColorMode::Grayscale)
        .handout_layout(GenHandoutLayout::SlidesPerPage6)
        .frame_slides(true)
        .header("Q1 2025 Strategy Review")
        .footer("Confidential - Internal Use Only")
        .print_date(true)
        .print_page_numbers(true);
    println!("   └── Print: Handouts, 6/page, grayscale, framed");
    println!("       └── XML: {} bytes", print_settings.to_prnpr_xml().len());

    let pres_settings = PresentationSettings::new()
        .slide_show(show_settings)
        .print(print_settings);
    println!("   All settings configured → presProps.xml");

    // =========================================================================
    // Generate PPTX with real integrated features
    // =========================================================================
    println!("\n📦 Generating PPTX with integrated features...");
    let pptx_data = create_pptx_with_settings(
        "PPTX-RS Element Showcase",
        slides.clone(),
        Some(pres_settings),
    )?;
    fs::write("comprehensive_demo.pptx", &pptx_data)?;
    println!("   ✓ Created comprehensive_demo.pptx ({} slides, {} bytes)", 
             slides.len(), pptx_data.len());

    // =========================================================================
    // Package Analysis - Demonstrate Reading
    // =========================================================================
    println!("\n📖 Package Analysis (Read Capability):");
    
    let package = Package::open("comprehensive_demo.pptx")?;
    let paths = package.part_paths();
    
    let slide_count = paths.iter()
        .filter(|p| p.starts_with("ppt/slides/slide") && p.ends_with(".xml"))
        .count();
    
    println!("   ├── Total parts: {}", package.part_count());
    println!("   ├── Slides: {}", slide_count);
    println!("   └── Package opened and analyzed successfully");

    // =========================================================================
    // NEW: Parts API Demonstration
    // =========================================================================
    println!("\n🧩 Parts API Demonstration:");
    
    // SlideLayoutPart - 11 layout types
    println!("   ┌── SlideLayoutPart (11 layout types):");
    let layouts = [
        LayoutType::Title,
        LayoutType::TitleAndContent,
        LayoutType::SectionHeader,
        LayoutType::TwoContent,
        LayoutType::Comparison,
        LayoutType::TitleOnly,
        LayoutType::Blank,
        LayoutType::ContentWithCaption,
        LayoutType::PictureWithCaption,
        LayoutType::TitleAndVerticalText,
        LayoutType::VerticalTitleAndText,
    ];
    for (i, layout_type) in layouts.iter().enumerate() {
        let layout = SlideLayoutPart::new(i + 1, *layout_type);
        if i < 3 {
            println!("   │   ├── {}: {} ({})", i + 1, layout_type.name(), layout.path());
        }
    }
    println!("   │   └── ... and {} more layout types", layouts.len() - 3);
    
    // SlideMasterPart
    println!("   ├── SlideMasterPart:");
    let mut master = SlideMasterPart::new(1);
    master.set_name("Custom Master");
    master.add_layout_rel_id("rId2");
    master.add_layout_rel_id("rId3");
    println!("   │   ├── Name: {}", master.name());
    println!("   │   ├── Path: {}", master.path());
    println!("   │   └── Layouts: {} linked", master.layout_rel_ids().len());
    
    // ThemePart - Colors and Fonts
    println!("   ├── ThemePart (colors & fonts):");
    let mut theme = ThemePart::new(1);
    theme.set_name("Corporate Theme");
    theme.set_major_font("Arial");
    theme.set_minor_font("Calibri");
    theme.set_color("accent1", "FF5733");
    theme.set_color("accent2", "33FF57");
    let theme_xml = theme.to_xml()?;
    println!("   │   ├── Name: {}", theme.name());
    println!("   │   ├── Major Font: Arial");
    println!("   │   ├── Minor Font: Calibri");
    println!("   │   └── XML size: {} bytes", theme_xml.len());
    
    // NotesSlidePart - Speaker notes
    println!("   ├── NotesSlidePart (speaker notes):");
    let notes = NotesSlidePart::with_text(1, "Remember to:\n- Introduce yourself\n- Explain the agenda\n- Ask for questions");
    let notes_xml = notes.to_xml()?;
    println!("   │   ├── Path: {}", notes.path());
    println!("   │   ├── Text: \"{}...\"", &notes.notes_text()[..20.min(notes.notes_text().len())]);
    println!("   │   └── XML size: {} bytes", notes_xml.len());
    
    // AppPropertiesPart - Application metadata
    println!("   ├── AppPropertiesPart (metadata):");
    let mut app_props = AppPropertiesPart::new();
    app_props.set_company("Acme Corporation");
    app_props.set_slides(slides.len() as u32);
    let app_xml = app_props.to_xml()?;
    println!("   │   ├── Company: Acme Corporation");
    println!("   │   ├── Slides: {}", slides.len());
    println!("   │   └── XML size: {} bytes", app_xml.len());
    
    // MediaPart - Video/Audio formats
    println!("   ├── MediaPart (10 media formats):");
    println!("   │   ├── Video: mp4, webm, avi, wmv, mov");
    println!("   │   ├── Audio: mp3, wav, wma, m4a, ogg");
    let sample_media = MediaPart::new(1, MediaFormat::Mp4, vec![0; 100]);
    println!("   │   └── Sample: {} ({})", sample_media.path(), sample_media.format().mime_type());
    
    // TablePart - Table with formatting
    println!("   ├── TablePart (cell formatting):");
    let table_part = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Header 1").bold().background("4472C4"),
            TableCellPart::new("Header 2").bold().background("4472C4"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Data 1").color("333333"),
            TableCellPart::new("Data 2").italic(),
        ]))
        .position(EMU_PER_INCH, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 6, EMU_PER_INCH * 2);
    let table_xml = table_part.to_slide_xml(10);
    println!("   │   ├── Rows: {}", table_part.rows.len());
    println!("   │   ├── Features: bold, italic, colors, backgrounds");
    println!("   │   └── XML size: {} bytes", table_xml.len());
    
    // ContentTypesPart
    println!("   └── ContentTypesPart:");
    let mut content_types = ContentTypesPart::new();
    content_types.add_presentation();
    content_types.add_slide(1);
    content_types.add_slide_layout(1);
    content_types.add_slide_master(1);
    content_types.add_theme(1);
    content_types.add_core_properties();
    content_types.add_app_properties();
    let ct_xml = content_types.to_xml()?;
    println!("       ├── Path: {}", content_types.path());
    println!("       └── XML size: {} bytes", ct_xml.len());

    // =========================================================================
    // NEW: Elements API Demonstration
    // =========================================================================
    println!("\n🎨 Elements API Demonstration:");
    
    // Color types
    println!("   ┌── Color Types:");
    let rgb = RgbColor::new(255, 87, 51);
    let rgb_hex = RgbColor::from_hex("#4472C4").unwrap();
    let scheme = SchemeColor::Accent1;
    let color = Color::rgb(100, 149, 237);
    println!("   │   ├── RgbColor::new(255, 87, 51) → {}", rgb.to_hex());
    println!("   │   ├── RgbColor::from_hex(\"#4472C4\") → {}", rgb_hex.to_hex());
    println!("   │   ├── SchemeColor::Accent1 → {}", scheme.as_str());
    println!("   │   └── Color::rgb(100, 149, 237) → XML: {}", color.to_xml().chars().take(30).collect::<String>());
    
    // Position and Size
    println!("   ├── Position & Size (EMU units):");
    let pos = Position::from_inches(1.0, 2.0);
    let size = Size::from_inches(4.0, 3.0);
    println!("   │   ├── Position::from_inches(1.0, 2.0) → x={}, y={}", pos.x, pos.y);
    println!("   │   ├── Size::from_inches(4.0, 3.0) → w={}, h={}", size.width, size.height);
    println!("   │   └── EMU_PER_INCH = {}", EMU_PER_INCH);
    
    // Transform
    println!("   └── Transform (position + size + rotation):");
    let transform = Transform::from_inches(1.0, 1.5, 3.0, 2.0).with_rotation(45.0);
    let transform_xml = transform.to_xml();
    println!("       ├── Transform::from_inches(1.0, 1.5, 3.0, 2.0)");
    println!("       ├── .with_rotation(45.0)");
    println!("       └── XML: {}...", &transform_xml[..50.min(transform_xml.len())]);

    // =========================================================================
    // NEW: Advanced Features Demonstration
    // =========================================================================
    println!("\n🚀 Advanced Features Demonstration:");

    // -------------------------------------------------------------------------
    // Complex Table Examples
    // -------------------------------------------------------------------------
    println!("   ┌── Complex Table Examples:");
    
    // Example 1: Financial Report Table
    println!("   │   ┌── Financial Report Table (5x4 with formatting):");
    let financial_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Q1 2024 Financial Summary")
                .col_span(4)
                .bold()
                .center()
                .background("1F4E79")
                .color("FFFFFF")
                .font_size(14)
                .font("Arial Black"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Category").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Revenue").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Expenses").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Profit").bold().center().background("2E75B6").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Product Sales").align(HorizontalAlign::Left),
            TableCellPart::new("$1,250,000").align(HorizontalAlign::Right).color("2E7D32"),
            TableCellPart::new("$450,000").align(HorizontalAlign::Right).color("C62828"),
            TableCellPart::new("$800,000").align(HorizontalAlign::Right).bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Services").align(HorizontalAlign::Left),
            TableCellPart::new("$890,000").align(HorizontalAlign::Right).color("2E7D32"),
            TableCellPart::new("$320,000").align(HorizontalAlign::Right).color("C62828"),
            TableCellPart::new("$570,000").align(HorizontalAlign::Right).bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Total").bold().background("E7E6E6"),
            TableCellPart::new("$2,140,000").bold().align(HorizontalAlign::Right).background("E7E6E6"),
            TableCellPart::new("$770,000").bold().align(HorizontalAlign::Right).background("E7E6E6"),
            TableCellPart::new("$1,370,000").bold().align(HorizontalAlign::Right).background("C6EFCE").color("006100"),
        ]))
        .position(EMU_PER_INCH / 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 8, EMU_PER_INCH * 3);
    let fin_xml = financial_table.to_slide_xml(100);
    println!("   │   │   ├── Merged header spanning 4 columns");
    println!("   │   │   ├── Color-coded values (green=positive, red=negative)");
    println!("   │   │   ├── Custom fonts and sizes");
    println!("   │   │   └── XML: {} bytes", fin_xml.len());

    // Example 2: Comparison Matrix
    println!("   │   ├── Comparison Matrix (features vs products):");
    let matrix_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Feature").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Basic").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Pro").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Enterprise").bold().center().background("4472C4").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Storage").align(HorizontalAlign::Left),
            TableCellPart::new("5 GB").center(),
            TableCellPart::new("50 GB").center(),
            TableCellPart::new("Unlimited").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Users").align(HorizontalAlign::Left),
            TableCellPart::new("1").center(),
            TableCellPart::new("10").center(),
            TableCellPart::new("Unlimited").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Support").align(HorizontalAlign::Left),
            TableCellPart::new("Email").center(),
            TableCellPart::new("24/7 Chat").center(),
            TableCellPart::new("Dedicated").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Price/mo").bold().background("F2F2F2"),
            TableCellPart::new("$9").center().bold().background("F2F2F2"),
            TableCellPart::new("$29").center().bold().background("F2F2F2"),
            TableCellPart::new("$99").center().bold().background("F2F2F2"),
        ]));
    println!("   │   │   └── 5x4 matrix with alternating styles");

    // Example 3: Schedule/Timeline Table
    println!("   │   └── Schedule Table (with row spans):");
    let schedule_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Time").bold().center().background("70AD47").color("FFFFFF"),
            TableCellPart::new("Monday").bold().center().background("70AD47").color("FFFFFF"),
            TableCellPart::new("Tuesday").bold().center().background("70AD47").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("9:00 AM").center().background("E2EFDA"),
            TableCellPart::new("Team Standup").center().row_span(2).valign(VerticalAlign::Middle).background("BDD7EE"),
            TableCellPart::new("Code Review").center(),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("10:00 AM").center().background("E2EFDA"),
            TableCellPart::merged(),
            TableCellPart::new("Sprint Planning").center().background("FCE4D6"),
        ]));
    println!("   │       └── Row spans for multi-hour events");

    // -------------------------------------------------------------------------
    // Complex Animation Sequences
    // -------------------------------------------------------------------------
    println!("   ├── Complex Animation Sequences:");
    
    // Sequence 1: Title entrance with staggered content
    println!("   │   ┌── Staggered Entrance Sequence:");
    let title_anim = Animation::new(2, AnimationEffect::Fade)
        .trigger(AnimationTrigger::OnClick)
        .duration(500);
    let content1 = Animation::new(3, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(200);
    let content2 = Animation::new(4, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(100);
    let content3 = Animation::new(5, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(100);
    let staggered = SlideAnimations::new()
        .add(title_anim)
        .add(content1)
        .add(content2)
        .add(content3)
        .transition(SlideTransition::new(TransitionEffect::Push).direction(AnimationDirection::Left).duration(750));
    let staggered_xml = staggered.to_timing_xml()?;
    println!("   │   │   ├── Title: Fade on click");
    println!("   │   │   ├── Content 1-3: FlyIn with 100ms stagger");
    println!("   │   │   ├── Transition: Push from left (750ms)");
    println!("   │   │   └── XML: {} bytes", staggered_xml.len());

    // Sequence 2: Emphasis and exit
    println!("   │   ├── Emphasis + Exit Sequence:");
    let emphasis = Animation::new(6, AnimationEffect::Pulse)
        .trigger(AnimationTrigger::OnClick)
        .duration(1000)
        .repeat(3);
    let exit = Animation::new(6, AnimationEffect::FadeOut)
        .trigger(AnimationTrigger::AfterPrevious)
        .duration(500);
    let emphasis_seq = SlideAnimations::new()
        .add(emphasis)
        .add(exit);
    println!("   │   │   ├── Pulse 3x on click, then fade out");
    println!("   │   │   └── Same shape, sequential effects");

    // Sequence 3: Motion path
    println!("   │   └── Motion Path Animation:");
    let motion = Animation::new(7, AnimationEffect::Lines)
        .trigger(AnimationTrigger::OnClick)
        .duration(2000);
    println!("   │       └── Custom path: Lines, Arcs, Turns, Loops");

    // -------------------------------------------------------------------------
    // SmartArt Combinations
    // -------------------------------------------------------------------------
    println!("   ├── SmartArt Layout Examples:");
    
    // Process flow
    println!("   │   ┌── Process Flow (5 steps):");
    let process = SmartArtPart::new(1, SmartArtLayout::BasicProcess)
        .add_items(vec!["Research", "Design", "Develop", "Test", "Deploy"])
        .position(EMU_PER_INCH / 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 8, EMU_PER_INCH * 2);
    println!("   │   │   └── {} nodes in horizontal flow", process.nodes().len());

    // Organization chart
    println!("   │   ├── Organization Chart:");
    let org = SmartArtPart::new(2, SmartArtLayout::OrgChart)
        .add_items(vec!["CEO", "CTO", "CFO", "VP Engineering", "VP Sales"]);
    println!("   │   │   └── Hierarchical structure with {} positions", org.nodes().len());

    // Cycle diagram
    println!("   │   ├── Cycle Diagram:");
    let cycle = SmartArtPart::new(3, SmartArtLayout::BasicCycle)
        .add_items(vec!["Plan", "Do", "Check", "Act"]);
    println!("   │   │   └── PDCA cycle with {} phases", cycle.nodes().len());

    // Venn diagram
    println!("   │   ├── Venn Diagram:");
    let venn = SmartArtPart::new(4, SmartArtLayout::BasicVenn)
        .add_items(vec!["Skills", "Passion", "Market Need"]);
    println!("   │   │   └── 3-circle Venn for Ikigai concept");

    // Pyramid
    println!("   │   └── Pyramid:");
    let pyramid = SmartArtPart::new(5, SmartArtLayout::BasicPyramid)
        .add_items(vec!["Self-Actualization", "Esteem", "Love/Belonging", "Safety", "Physiological"]);
    println!("   │       └── Maslow's hierarchy with {} levels", pyramid.nodes().len());

    // -------------------------------------------------------------------------
    // 3D Model Configurations
    // -------------------------------------------------------------------------
    println!("   ├── 3D Model Configurations:");
    
    // Product showcase
    println!("   │   ┌── Product Showcase:");
    let product_3d = Model3DPart::new(1, Model3DFormat::Glb, vec![0; 100])
        .camera(CameraPreset::IsometricTopUp)
        .rotation(0.0, 45.0, 0.0)
        .zoom(1.2)
        .position(EMU_PER_INCH * 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 4, EMU_PER_INCH * 4);
    println!("   │   │   ├── Camera: Isometric top-up view");
    println!("   │   │   ├── Rotation: 45° Y-axis for best angle");
    println!("   │   │   └── Zoom: 1.2x for detail");

    // Architectural model
    println!("   │   ├── Architectural Model:");
    let arch_3d = Model3DPart::new(2, Model3DFormat::Gltf, vec![0; 100])
        .camera(CameraPreset::Front)
        .rotation(15.0, -30.0, 0.0)
        .ambient_light("FFFFCC");
    println!("   │   │   ├── Camera: Front view with tilt");
    println!("   │   │   └── Ambient: Warm lighting (FFFFCC)");

    // Technical diagram
    println!("   │   └── Technical Diagram:");
    let tech_3d = Model3DPart::new(3, Model3DFormat::Obj, vec![0; 100])
        .camera(CameraPreset::IsometricOffAxis1Top)
        .rotation(0.0, 0.0, 0.0);
    println!("   │       └── Camera: Off-axis isometric for exploded view");

    // -------------------------------------------------------------------------
    // Theme + Master + Layout Combination
    // -------------------------------------------------------------------------
    println!("   ├── Theme + Master + Layout Integration:");
    
    // Corporate theme
    let mut corp_theme = ThemePart::new(1);
    corp_theme.set_name("Corporate Blue");
    corp_theme.set_major_font("Segoe UI");
    corp_theme.set_minor_font("Segoe UI Light");
    corp_theme.set_color("dk1", "000000");
    corp_theme.set_color("lt1", "FFFFFF");
    corp_theme.set_color("dk2", "1F497D");
    corp_theme.set_color("lt2", "EEECE1");
    corp_theme.set_color("accent1", "4472C4");
    corp_theme.set_color("accent2", "ED7D31");
    corp_theme.set_color("accent3", "A5A5A5");
    corp_theme.set_color("accent4", "FFC000");
    corp_theme.set_color("accent5", "5B9BD5");
    corp_theme.set_color("accent6", "70AD47");
    let theme_xml = corp_theme.to_xml()?;
    println!("   │   ├── Theme: Corporate Blue");
    println!("   │   │   ├── Fonts: Segoe UI / Segoe UI Light");
    println!("   │   │   ├── 12 color slots defined");
    println!("   │   │   └── XML: {} bytes", theme_xml.len());

    // Master with multiple layouts
    let mut corp_master = SlideMasterPart::new(1);
    corp_master.set_name("Corporate Master");
    corp_master.add_layout_rel_id("rId2"); // Title
    corp_master.add_layout_rel_id("rId3"); // Title + Content
    corp_master.add_layout_rel_id("rId4"); // Section Header
    corp_master.add_layout_rel_id("rId5"); // Two Content
    corp_master.add_layout_rel_id("rId6"); // Comparison
    corp_master.add_layout_rel_id("rId7"); // Title Only
    corp_master.add_layout_rel_id("rId8"); // Blank
    println!("   │   └── Master: {} with {} layouts linked", corp_master.name(), corp_master.layout_rel_ids().len());

    // -------------------------------------------------------------------------
    // VBA + Custom XML Integration
    // -------------------------------------------------------------------------
    println!("   ├── VBA + Custom XML Integration:");
    
    // VBA with multiple modules
    let vba_project = VbaProjectPart::new()
        .add_module(VbaModule::new("AutoRun", r#"
Sub Auto_Open()
    MsgBox "Welcome to the presentation!"
End Sub

Sub NavigateToSlide(slideNum As Integer)
    SlideShowWindows(1).View.GotoSlide slideNum
End Sub
"#))
        .add_module(VbaModule::new("DataHelpers", r#"
Function GetCustomData(key As String) As String
    ' Read from Custom XML part
    GetCustomData = ActivePresentation.CustomXMLParts(1).SelectSingleNode("//" & key).Text
End Function
"#))
        .add_module(VbaModule::class("SlideController", r#"
Private currentSlide As Integer

Public Sub NextSlide()
    currentSlide = currentSlide + 1
    NavigateToSlide currentSlide
End Sub
"#));
    println!("   │   ├── VBA Project:");
    println!("   │   │   ├── AutoRun: Auto_Open, NavigateToSlide");
    println!("   │   │   ├── DataHelpers: GetCustomData (reads Custom XML)");
    println!("   │   │   └── SlideController: Class for navigation");

    // Custom XML with structured data
    let app_config = CustomXmlPart::new(1, "presentationConfig")
        .namespace("http://company.com/pptx/config")
        .property("version", "2.1.0")
        .property("author", "Demo User")
        .property("department", "Engineering")
        .property("confidentiality", "Internal")
        .property("lastModified", "2024-01-15T10:30:00Z");
    let config_xml = app_config.to_xml()?;
    println!("   │   └── Custom XML:");
    println!("   │       ├── Namespace: http://company.com/pptx/config");
    println!("   │       ├── Properties: version, author, department, etc.");
    println!("   │       └── XML: {} bytes", config_xml.len());

    // -------------------------------------------------------------------------
    // Embedded Fonts with Variants
    // -------------------------------------------------------------------------
    println!("   ├── Embedded Font Collection:");
    let mut font_collection = EmbeddedFontCollection::new();
    font_collection.add("Corporate Sans", vec![0; 1000]);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::Bold);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::Italic);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::BoldItalic);
    font_collection.add("Code Mono", vec![0; 800]);
    let fonts_xml = font_collection.to_xml();
    println!("   │   ├── Corporate Sans: Regular, Bold, Italic, BoldItalic");
    println!("   │   ├── Code Mono: Regular");
    println!("   │   ├── Total: {} font files", font_collection.len());
    println!("   │   └── XML: {} bytes", fonts_xml.len());

    // -------------------------------------------------------------------------
    // Handout with Full Configuration
    // -------------------------------------------------------------------------
    println!("   └── Handout Master Configuration:");
    let handout = HandoutMasterPart::new()
        .layout(HandoutLayout::SlidesPerPage6)
        .header("Q1 2024 Strategy Review")
        .footer("Confidential - Internal Use Only");
    let handout_xml = handout.to_xml()?;
    println!("       ├── Layout: 6 slides per page");
    println!("       ├── Header: Q1 2024 Strategy Review");
    println!("       ├── Footer: Confidential - Internal Use Only");
    println!("       └── XML: {} bytes", handout_xml.len());

    // =========================================================================
    // Summary
    // =========================================================================
    println!("\n╔══════════════════════════════════════════════════════════════╗");
    println!("║                    Element Coverage Summary                   ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  LAYOUTS (6 types):                                          ║");
    println!("║    ✓ CenteredTitle    ✓ TitleOnly      ✓ TitleAndContent     ║");
    println!("║    ✓ TitleAndBigContent  ✓ TwoColumn   ✓ Blank               ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  TEXT FORMATTING:                                            ║");
    println!("║    ✓ Bold            ✓ Italic         ✓ Underline            ║");
    println!("║    ✓ Font Size       ✓ Font Color     ✓ Title/Content styles ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  TABLES:                                                     ║");
    println!("║    ✓ Multiple rows/columns  ✓ Bold cells  ✓ Background colors║");
    println!("║    ✓ Header styling         ✓ Position control               ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  CHARTS:                                                     ║");
    println!("║    ✓ Bar Chart       ✓ Line Chart     ✓ Pie Chart            ║");
    println!("║    ✓ Multiple series ✓ Categories                            ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  SHAPES:                                                     ║");
    println!("║    ✓ Rectangle       ✓ Ellipse        ✓ RoundedRectangle     ║");
    println!("║    ✓ Triangle        ✓ Diamond        ✓ Color fills          ║");
    println!("║    ✓ Gradient fills  ✓ Transparency   ✓ Text in shapes       ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  CONNECTORS (NEW):                                           ║");
    println!("║    ✓ Straight        ✓ Elbow          ✓ Curved               ║");
    println!("║    ✓ Arrow types     ✓ Dash styles    ✓ Line colors/widths   ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  IMAGES:                                                     ║");
    println!("║    ✓ Image placeholders  ✓ Position   ✓ Dimensions           ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  PACKAGE:                                                    ║");
    println!("║    ✓ Create PPTX     ✓ Read PPTX      ✓ Analyze contents     ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  PARTS API (NEW):                                            ║");
    println!("║    ✓ SlideLayoutPart (11 types)  ✓ SlideMasterPart           ║");
    println!("║    ✓ ThemePart (colors/fonts)    ✓ NotesSlidePart            ║");
    println!("║    ✓ AppPropertiesPart           ✓ MediaPart (10 formats)    ║");
    println!("║    ✓ TablePart (cell formatting) ✓ ContentTypesPart          ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  ELEMENTS API:                                               ║");
    println!("║    ✓ RgbColor        ✓ SchemeColor    ✓ Color enum           ║");
    println!("║    ✓ Position        ✓ Size           ✓ Transform            ║");
    println!("║    ✓ EMU conversions (inches, cm, mm, pt)                    ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  ADVANCED FEATURES (NEW):                                    ║");
    println!("║    ✓ Animation (50+ effects)  ✓ Transitions (27 types)       ║");
    println!("║    ✓ SmartArt (25 layouts)    ✓ 3D Models (GLB/GLTF/OBJ)     ║");
    println!("║    ✓ VBA Macros (.pptm)       ✓ Embedded Fonts               ║");
    println!("║    ✓ Custom XML               ✓ Handout Master               ║");
    println!("║    ✓ Table borders/alignment  ✓ Merged cells                 ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  Output: comprehensive_demo.pptx ({} slides, {} KB)         ║", 
             slides.len(), pptx_data.len() / 1024);
    println!("╚══════════════════════════════════════════════════════════════╝");

    Ok(())
}

pub fn title_italic(self, italic: bool) -> Self

Examples found in repository

examples/text_styling_complete.rs (line 56)

fn create_italic_underline_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Italic Text")
            .title_italic(true)
            .add_bullet("This is italic content")
            .add_bullet("More italic text here"),
        SlideContent::new("Underlined Text")
            .title_underline(true)
            .content_underline(true)
            .add_bullet("Underlined bullet point 1")
            .add_bullet("Underlined bullet point 2"),
        SlideContent::new("Combined Effects")
            .title_italic(true)
            .title_underline(true)
            .content_italic(true)
            .add_bullet("Italic and underlined content")
            .add_bullet("Multiple effects combined"),
    ];

    let pptx_data = create_pptx_with_content("Italic and Underline", slides)?;
    fs::write("examples/output/italic_underline.pptx", pptx_data)?;
    Ok(())
}

fn create_colored_text_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Red Title")
            .title_color("FF0000")
            .add_bullet("Red title text")
            .add_bullet("Regular content"),
        SlideContent::new("Blue Content")
            .content_color("0000FF")
            .add_bullet("Blue bullet point 1")
            .add_bullet("Blue bullet point 2")
            .add_bullet("Blue bullet point 3"),
        SlideContent::new("Green Title & Content")
            .title_color("00AA00")
            .content_color("00AA00")
            .add_bullet("Green title and content")
            .add_bullet("All text is green"),
        SlideContent::new("Purple Accent")
            .title_color("9933FF")
            .add_bullet("Purple title")
            .add_bullet("Regular content"),
    ];

    let pptx_data = create_pptx_with_content("Colored Text", slides)?;
    fs::write("examples/output/colored_text.pptx", pptx_data)?;
    Ok(())
}

fn create_combined_styling_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Bold & Italic & Red")
            .title_bold(true)
            .title_italic(true)
            .title_color("FF0000")
            .title_size(52)
            .add_bullet("Regular content"),
        SlideContent::new("Underlined Blue Content")
            .content_underline(true)
            .content_color("0000FF")
            .content_bold(true)
            .add_bullet("Bold, underlined, blue bullet")
            .add_bullet("Multiple effects applied"),
        SlideContent::new("Mixed Effects")
            .title_italic(true)
            .title_color("FF6600")
            .content_bold(true)
            .content_underline(true)
            .content_color("0066FF")
            .add_bullet("Title: italic, orange")
            .add_bullet("Content: bold, underlined, blue"),
        SlideContent::new("Professional Look")
            .title_bold(true)
            .title_size(48)
            .title_color("003366")
            .content_size(24)
            .add_bullet("Clean, professional styling")
            .add_bullet("Dark blue title with bold")
            .add_bullet("Larger content text"),
    ];

    let pptx_data = create_pptx_with_content("Combined Styling", slides)?;
    fs::write("examples/output/combined_styling.pptx", pptx_data)?;
    Ok(())
}

fn create_professional_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Company Presentation")
            .title_bold(true)
            .title_size(56)
            .title_color("003366")
            .content_size(32)
            .add_bullet("2025 Annual Review"),
        SlideContent::new("Key Highlights")
            .title_bold(true)
            .title_color("003366")
            .content_bold(true)
            .content_color("0066CC")
            .add_bullet("Revenue growth: +25%")
            .add_bullet("Market expansion: 3 new regions")
            .add_bullet("Team growth: +50 employees"),
        SlideContent::new("Strategic Initiatives")
            .title_italic(true)
            .title_color("FF6600")
            .content_underline(true)
            .add_bullet("Digital transformation")
            .add_bullet("Customer experience improvement")
            .add_bullet("Sustainability focus"),
        SlideContent::new("Q1 2025 Goals")
            .title_bold(true)
            .title_underline(true)
            .title_color("003366")
            .content_bold(true)
            .add_bullet("Launch new product line")
            .add_bullet("Expand to 5 new markets")
            .add_bullet("Achieve 30% revenue growth"),
        SlideContent::new("Thank You")
            .title_bold(true)
            .title_size(60)
            .title_color("003366")
            .content_italic(true)
            .content_size(28)
            .add_bullet("Questions & Discussion"),
    ];

    let pptx_data = create_pptx_with_content("Professional Presentation", slides)?;
    fs::write("examples/output/professional.pptx", pptx_data)?;
    Ok(())
}

examples/comprehensive_demo.rs (line 108)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    println!("╔══════════════════════════════════════════════════════════════╗");
    println!("║       PPTX-RS Element Showcase - Complete Coverage           ║");
    println!("╚══════════════════════════════════════════════════════════════╝\n");

    let mut slides = Vec::new();

    // =========================================================================
    // SLIDE 1: CenteredTitle Layout + Title Formatting
    // =========================================================================
    println!("📐 Slide 1: CenteredTitle Layout + Title Formatting");
    slides.push(
        SlideContent::new("PPTX-RS Element Showcase")
            .layout(SlideLayout::CenteredTitle)
            .title_size(54)
            .title_bold(true)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 2: TitleOnly Layout
    // =========================================================================
    println!("📐 Slide 2: TitleOnly Layout");
    slides.push(
        SlideContent::new("Section: Slide Layouts")
            .layout(SlideLayout::TitleOnly)
            .title_size(48)
            .title_bold(true)
            .title_color("C0504D")
    );

    // =========================================================================
    // SLIDE 3: TitleAndContent Layout + All Text Formatting
    // =========================================================================
    println!("📝 Slide 3: TitleAndContent + Text Formatting");
    slides.push(
        SlideContent::new("Text Formatting Options")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .title_italic(true)
            .title_underline(true)
            .title_size(44)
            .add_bullet("Normal text (default)")
            .add_bullet("Bold content text")
            .add_bullet("Italic content text")
            .add_bullet("Underlined content")
            .add_bullet("Custom font size (28pt)")
            .add_bullet("Custom color (#4F81BD)")
            .content_bold(true)
            .content_italic(true)
            .content_underline(true)
            .content_size(28)
            .content_color("4F81BD")
    );

    // =========================================================================
    // SLIDE 4: TitleAndBigContent Layout
    // =========================================================================
    println!("📐 Slide 4: TitleAndBigContent Layout");
    slides.push(
        SlideContent::new("Key Highlights")
            .layout(SlideLayout::TitleAndBigContent)
            .title_color("1F497D")
            .add_bullet("Large content area for emphasis")
            .add_bullet("Perfect for key messages")
            .add_bullet("Smaller title, bigger content")
            .content_bold(true)
            .content_size(32)
    );

    // =========================================================================
    // SLIDE 5: TwoColumn Layout
    // =========================================================================
    println!("📐 Slide 5: TwoColumn Layout");
    slides.push(
        SlideContent::new("Two Column Comparison")
            .layout(SlideLayout::TwoColumn)
            .title_color("1F497D")
            .add_bullet("Left Column Item 1")
            .add_bullet("Left Column Item 2")
            .add_bullet("Left Column Item 3")
            .add_bullet("Right Column Item 1")
            .add_bullet("Right Column Item 2")
            .add_bullet("Right Column Item 3")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 6: Blank Layout
    // =========================================================================
    println!("📐 Slide 6: Blank Layout");
    slides.push(
        SlideContent::new("")
            .layout(SlideLayout::Blank)
    );

    // =========================================================================
    // SLIDE 7: Table with All Cell Styling Options
    // =========================================================================
    println!("📊 Slide 7: Table with Cell Styling");
    let styled_table = TableBuilder::new(vec![1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Header 1").bold().background_color("1F497D"),
            TableCell::new("Header 2").bold().background_color("4F81BD"),
            TableCell::new("Header 3").bold().background_color("8064A2"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Bold Cell").bold(),
            TableCell::new("Normal Cell"),
            TableCell::new("Colored").background_color("9BBB59"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Red BG").background_color("C0504D"),
            TableCell::new("Green BG").background_color("9BBB59"),
            TableCell::new("Blue BG").background_color("4F81BD"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Row 3 Col 1"),
            TableCell::new("Row 3 Col 2"),
            TableCell::new("Row 3 Col 3").bold().background_color("F79646"),
        ]))
        .position(500000, 1800000)
        .build();
    
    slides.push(
        SlideContent::new("Table with Cell Styling")
            .table(styled_table)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 8: Charts (Bar, Line, Pie)
    // =========================================================================
    println!("📈 Slide 8: Chart Types");
    
    // Create chart data structures (for demonstration)
    let _bar_chart = ChartBuilder::new("Sales by Region", ChartType::Bar)
        .categories(vec!["North", "South", "East", "West"])
        .add_series(ChartSeries::new("2023", vec![100.0, 80.0, 120.0, 90.0]))
        .add_series(ChartSeries::new("2024", vec![120.0, 95.0, 140.0, 110.0]))
        .build();
    
    let _line_chart = ChartBuilder::new("Monthly Trend", ChartType::Line)
        .categories(vec!["Jan", "Feb", "Mar", "Apr", "May", "Jun"])
        .add_series(ChartSeries::new("Revenue", vec![10.0, 12.0, 15.0, 14.0, 18.0, 22.0]))
        .build();
    
    let _pie_chart = ChartBuilder::new("Market Share", ChartType::Pie)
        .categories(vec!["Product A", "Product B", "Product C", "Others"])
        .add_series(ChartSeries::new("Share", vec![40.0, 30.0, 20.0, 10.0]))
        .build();
    
    slides.push(
        SlideContent::new("Chart Types: Bar, Line, Pie")
            .with_chart()
            .title_color("1F497D")
            .add_bullet("Bar Chart: Compare categories")
            .add_bullet("Line Chart: Show trends over time")
            .add_bullet("Pie Chart: Show proportions")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 9: Shapes with Different Fills
    // =========================================================================
    println!("🔷 Slide 9: Shapes with Fills");
    
    let rect = Shape::new(ShapeType::Rectangle, 500000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("4F81BD"))
        .with_text("Rectangle");
    
    let ellipse = Shape::new(ShapeType::Ellipse, 3000000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("9BBB59"))
        .with_text("Ellipse");
    
    let rounded = Shape::new(ShapeType::RoundedRectangle, 5500000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("C0504D"))
        .with_text("Rounded");
    
    let triangle = Shape::new(ShapeType::Triangle, 1500000, 3000000, 1500000, 1200000)
        .with_fill(ShapeFill::new("8064A2"))
        .with_text("Triangle");
    
    let diamond = Shape::new(ShapeType::Diamond, 4000000, 3000000, 1500000, 1200000)
        .with_fill(ShapeFill::new("F79646"))
        .with_text("Diamond");
    
    slides.push(
        SlideContent::new("Shape Types with Color Fills")
            .add_shape(rect)
            .add_shape(ellipse)
            .add_shape(rounded)
            .add_shape(triangle)
            .add_shape(diamond)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 10: Gradient Fills (NEW)
    // =========================================================================
    println!("🌈 Slide 10: Gradient Fills");
    
    // Horizontal gradient
    let gradient_h = Shape::new(ShapeType::Rectangle, 500000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("1565C0", "42A5F5", GradientDirection::Horizontal))
        .with_text("Horizontal");
    
    // Vertical gradient
    let gradient_v = Shape::new(ShapeType::Rectangle, 3200000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("2E7D32", "81C784", GradientDirection::Vertical))
        .with_text("Vertical");
    
    // Diagonal gradient
    let gradient_d = Shape::new(ShapeType::RoundedRectangle, 5900000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("C62828", "EF9A9A", GradientDirection::DiagonalDown))
        .with_text("Diagonal");
    
    // Three-color gradient
    let gradient_3 = Shape::new(ShapeType::Ellipse, 1800000, 3200000, 2500000, 1200000)
        .with_gradient(GradientFill::three_color("FF6F00", "FFC107", "FFEB3B", GradientDirection::Horizontal))
        .with_text("3-Color");
    
    // Custom angle gradient
    let gradient_angle = Shape::new(ShapeType::RoundedRectangle, 4800000, 3200000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("7B1FA2", "E1BEE7", GradientDirection::Angle(135)))
        .with_text("135° Angle");
    
    slides.push(
        SlideContent::new("Gradient Fills - Multiple Directions")
            .add_shape(gradient_h)
            .add_shape(gradient_v)
            .add_shape(gradient_d)
            .add_shape(gradient_3)
            .add_shape(gradient_angle)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 11: Transparency (NEW)
    // =========================================================================
    println!("👻 Slide 11: Transparency Effects");
    
    // Base shape (fully opaque)
    let base = Shape::new(ShapeType::Rectangle, 1000000, 1800000, 3000000, 2000000)
        .with_fill(ShapeFill::new("1565C0"))
        .with_text("Base (100%)");
    
    // 25% transparent overlay
    let trans_25 = Shape::new(ShapeType::Rectangle, 2000000, 2200000, 2500000, 1500000)
        .with_fill(ShapeFill::new("F44336").with_transparency(25))
        .with_line(ShapeLine::new("B71C1C", 25400))
        .with_text("25% Transparent");
    
    // 50% transparent overlay
    let trans_50 = Shape::new(ShapeType::Ellipse, 4500000, 1800000, 2500000, 2000000)
        .with_fill(ShapeFill::new("4CAF50").with_transparency(50))
        .with_line(ShapeLine::new("1B5E20", 25400))
        .with_text("50% Transparent");
    
    // 75% transparent overlay
    let trans_75 = Shape::new(ShapeType::RoundedRectangle, 5500000, 2500000, 2500000, 1500000)
        .with_fill(ShapeFill::new("FF9800").with_transparency(75))
        .with_line(ShapeLine::new("E65100", 25400))
        .with_text("75% Transparent");
    
    slides.push(
        SlideContent::new("Transparency Effects - Overlapping Shapes")
            .add_shape(base)
            .add_shape(trans_25)
            .add_shape(trans_50)
            .add_shape(trans_75)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 12: Styled Connectors (NEW)
    // =========================================================================
    println!("🔗 Slide 12: Styled Connectors");
    
    // Create shapes to connect
    let box1 = Shape::new(ShapeType::RoundedRectangle, 500000, 1800000, 1800000, 800000)
        .with_id(100)
        .with_fill(ShapeFill::new("1565C0"))
        .with_text("Start");
    
    let box2 = Shape::new(ShapeType::RoundedRectangle, 3500000, 1800000, 1800000, 800000)
        .with_id(101)
        .with_fill(ShapeFill::new("2E7D32"))
        .with_text("Process");
    
    let box3 = Shape::new(ShapeType::RoundedRectangle, 6500000, 1800000, 1800000, 800000)
        .with_id(102)
        .with_fill(ShapeFill::new("C62828"))
        .with_text("End");
    
    // Straight connector with arrow
    let conn1 = Connector::straight(2300000, 2200000, 3500000, 2200000)
        .with_line(ConnectorLine::new("1565C0", 25400))
        .with_end_arrow(ArrowType::Triangle)
        .with_arrow_size(ArrowSize::Large);
    
    // Elbow connector with stealth arrow
    let conn2 = Connector::elbow(5300000, 2200000, 6500000, 2200000)
        .with_line(ConnectorLine::new("2E7D32", 38100).with_dash(LineDash::Dash))
        .with_end_arrow(ArrowType::Stealth)
        .with_arrow_size(ArrowSize::Medium);
    
    // Curved connector examples
    let box4 = Shape::new(ShapeType::Ellipse, 1000000, 3200000, 1500000, 800000)
        .with_id(103)
        .with_fill(ShapeFill::new("7B1FA2"))
        .with_text("A");
    
    let box5 = Shape::new(ShapeType::Ellipse, 4000000, 3200000, 1500000, 800000)
        .with_id(104)
        .with_fill(ShapeFill::new("00838F"))
        .with_text("B");
    
    let box6 = Shape::new(ShapeType::Ellipse, 7000000, 3200000, 1500000, 800000)
        .with_id(105)
        .with_fill(ShapeFill::new("EF6C00"))
        .with_text("C");
    
    // Curved connector with diamond arrow
    let conn3 = Connector::curved(2500000, 3600000, 4000000, 3600000)
        .with_line(ConnectorLine::new("7B1FA2", 19050).with_dash(LineDash::DashDot))
        .with_arrows(ArrowType::Oval, ArrowType::Diamond);
    
    // Dotted connector
    let conn4 = Connector::straight(5500000, 3600000, 7000000, 3600000)
        .with_line(ConnectorLine::new("00838F", 12700).with_dash(LineDash::Dot))
        .with_end_arrow(ArrowType::Open);
    
    slides.push(
        SlideContent::new("Styled Connectors - Types, Arrows, Dashes")
            .add_shape(box1)
            .add_shape(box2)
            .add_shape(box3)
            .add_shape(box4)
            .add_shape(box5)
            .add_shape(box6)
            .add_connector(conn1)
            .add_connector(conn2)
            .add_connector(conn3)
            .add_connector(conn4)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 13: Images
    // =========================================================================
    println!("🖼️  Slide 13: Image Placeholders");
    
    let img1 = Image::new("logo.png", 2500000, 1800000, "png")
        .position(500000, 1600000);
    let img2 = Image::new("photo.jpg", 2500000, 1800000, "jpg")
        .position(3500000, 1600000);
    let img3 = Image::new("diagram.png", 2000000, 1800000, "png")
        .position(6500000, 1600000);
    
    slides.push(
        SlideContent::new("Image Placeholders")
            .add_image(img1)
            .add_image(img2)
            .add_image(img3)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 11: Advanced Table with Borders & Alignment (NEW)
    // =========================================================================
    println!("📊 Slide 11: Advanced Table (borders, alignment, merged cells)");
    
    // Build advanced table using generator's TableBuilder with alignment
    let advanced_table = TableBuilder::new(vec![2000000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2024 Financial Report").bold().background_color("1F4E79").text_color("FFFFFF").align_center().font_size(14),
            TableCell::new("").background_color("1F4E79"),
            TableCell::new("").background_color("1F4E79"),
            TableCell::new("").background_color("1F4E79"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Category").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Revenue").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Expenses").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Profit").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Product Sales").text_color("000000").align_left(),
            TableCell::new("$1,250,000").text_color("2E7D32").align_right(),
            TableCell::new("$450,000").text_color("C62828").align_right(),
            TableCell::new("$800,000").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Services").text_color("000000").align_left(),
            TableCell::new("$890,000").text_color("2E7D32").align_right(),
            TableCell::new("$320,000").text_color("C62828").align_right(),
            TableCell::new("$570,000").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Total").bold().background_color("E7E6E6").text_color("000000").align_left(),
            TableCell::new("$2,140,000").bold().background_color("E7E6E6").text_color("000000").align_right(),
            TableCell::new("$770,000").bold().background_color("E7E6E6").text_color("000000").align_right(),
            TableCell::new("$1,370,000").bold().background_color("C6EFCE").text_color("006100").align_right(),
        ]))
        .position(300000, 1600000)
        .build();
    
    slides.push(
        SlideContent::new("Financial Report - Advanced Table")
            .table(advanced_table)
            .title_color("1F4E79")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 12: Comparison Matrix Table (NEW)
    // =========================================================================
    println!("📊 Slide 12: Comparison Matrix Table");
    
    let comparison_table = TableBuilder::new(vec![2000000, 1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Feature").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Basic").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Pro").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Enterprise").bold().background_color("4472C4").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Storage").text_color("000000"),
            TableCell::new("5 GB").text_color("000000"),
            TableCell::new("50 GB").text_color("000000"),
            TableCell::new("Unlimited").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Users").text_color("000000"),
            TableCell::new("1").text_color("000000"),
            TableCell::new("10").text_color("000000"),
            TableCell::new("Unlimited").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Support").text_color("000000"),
            TableCell::new("Email").text_color("000000"),
            TableCell::new("24/7 Chat").text_color("000000"),
            TableCell::new("Dedicated").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("API Access").text_color("000000"),
            TableCell::new("No").text_color("C62828"),
            TableCell::new("Yes").text_color("2E7D32"),
            TableCell::new("Yes + Priority").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Price/month").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$9").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$29").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$99").bold().background_color("F2F2F2").text_color("000000"),
        ]))
        .position(500000, 1600000)
        .build();
    
    slides.push(
        SlideContent::new("Pricing Comparison Matrix")
            .table(comparison_table)
            .title_color("4472C4")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 13: Process Flow with Shapes (NEW - SmartArt-like)
    // =========================================================================
    println!("🔷 Slide 13: Process Flow (SmartArt-style)");
    
    // Create process flow using shapes
    let step1 = Shape::new(ShapeType::RoundedRectangle, 300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("1. Research");
    let arrow1 = Shape::new(ShapeType::RightArrow, 1800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step2 = Shape::new(ShapeType::RoundedRectangle, 2300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("2. Design");
    let arrow2 = Shape::new(ShapeType::RightArrow, 3800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step3 = Shape::new(ShapeType::RoundedRectangle, 4300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("3. Develop");
    let arrow3 = Shape::new(ShapeType::RightArrow, 5800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step4 = Shape::new(ShapeType::RoundedRectangle, 6300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("5B9BD5"))
        .with_text("4. Deploy");
    
    slides.push(
        SlideContent::new("Development Process Flow")
            .add_shape(step1)
            .add_shape(arrow1)
            .add_shape(step2)
            .add_shape(arrow2)
            .add_shape(step3)
            .add_shape(arrow3)
            .add_shape(step4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 14: Organization Chart with Shapes (NEW)
    // =========================================================================
    println!("🔷 Slide 14: Organization Chart");
    
    // CEO at top
    let ceo = Shape::new(ShapeType::RoundedRectangle, 3500000, 1400000, 2000000, 600000)
        .with_fill(ShapeFill::new("1F4E79"))
        .with_text("CEO");
    
    // Vertical line from CEO
    let line1 = Shape::new(ShapeType::Rectangle, 4450000, 2000000, 100000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // Horizontal connector
    let hline = Shape::new(ShapeType::Rectangle, 1950000, 2400000, 5100000, 50000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // CTO, CFO, COO
    let cto = Shape::new(ShapeType::RoundedRectangle, 1000000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("CTO");
    let cfo = Shape::new(ShapeType::RoundedRectangle, 3600000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("CFO");
    let coo = Shape::new(ShapeType::RoundedRectangle, 6200000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("COO");
    
    // Vertical lines to departments
    let vline1 = Shape::new(ShapeType::Rectangle, 1850000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let vline2 = Shape::new(ShapeType::Rectangle, 4450000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let vline3 = Shape::new(ShapeType::Rectangle, 7050000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // Teams under CTO
    let eng = Shape::new(ShapeType::Rectangle, 500000, 3300000, 1200000, 400000)
        .with_fill(ShapeFill::new("BDD7EE"))
        .with_text("Engineering");
    let product = Shape::new(ShapeType::Rectangle, 1800000, 3300000, 1200000, 400000)
        .with_fill(ShapeFill::new("BDD7EE"))
        .with_text("Product");
    
    slides.push(
        SlideContent::new("Organization Structure")
            .add_shape(ceo)
            .add_shape(line1)
            .add_shape(hline)
            .add_shape(cto)
            .add_shape(cfo)
            .add_shape(coo)
            .add_shape(vline1)
            .add_shape(vline2)
            .add_shape(vline3)
            .add_shape(eng)
            .add_shape(product)
            .title_color("1F4E79")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 15: PDCA Cycle Diagram (NEW)
    // =========================================================================
    println!("🔷 Slide 15: PDCA Cycle Diagram");
    
    // Four quadrants for PDCA
    let plan = Shape::new(ShapeType::RoundedRectangle, 1500000, 1600000, 2500000, 1500000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("PLAN\n\nDefine goals\nand strategy");
    let do_box = Shape::new(ShapeType::RoundedRectangle, 4500000, 1600000, 2500000, 1500000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("DO\n\nImplement\nthe plan");
    let check = Shape::new(ShapeType::RoundedRectangle, 4500000, 3300000, 2500000, 1500000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("CHECK\n\nMeasure\nresults");
    let act = Shape::new(ShapeType::RoundedRectangle, 1500000, 3300000, 2500000, 1500000)
        .with_fill(ShapeFill::new("FFC000"))
        .with_text("ACT\n\nAdjust and\nimprove");
    
    // Arrows between quadrants
    let arr1 = Shape::new(ShapeType::RightArrow, 4100000, 2100000, 300000, 300000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr2 = Shape::new(ShapeType::DownArrow, 5600000, 3200000, 300000, 200000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr3 = Shape::new(ShapeType::LeftArrow, 4100000, 3800000, 300000, 300000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr4 = Shape::new(ShapeType::UpArrow, 2600000, 3200000, 300000, 200000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    slides.push(
        SlideContent::new("PDCA Continuous Improvement Cycle")
            .add_shape(plan)
            .add_shape(do_box)
            .add_shape(check)
            .add_shape(act)
            .add_shape(arr1)
            .add_shape(arr2)
            .add_shape(arr3)
            .add_shape(arr4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 16: Pyramid Diagram (Maslow's Hierarchy) (NEW)
    // =========================================================================
    println!("🔷 Slide 16: Pyramid Diagram");
    
    // Build pyramid from bottom to top
    let level5 = Shape::new(ShapeType::Trapezoid, 500000, 4000000, 8000000, 600000)
        .with_fill(ShapeFill::new("C00000"))
        .with_text("Physiological Needs - Food, Water, Shelter");
    let level4 = Shape::new(ShapeType::Trapezoid, 1000000, 3400000, 7000000, 600000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Safety Needs - Security, Stability");
    let level3 = Shape::new(ShapeType::Trapezoid, 1500000, 2800000, 6000000, 600000)
        .with_fill(ShapeFill::new("FFC000"))
        .with_text("Love & Belonging - Relationships");
    let level2 = Shape::new(ShapeType::Trapezoid, 2000000, 2200000, 5000000, 600000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Esteem - Achievement, Respect");
    let level1 = Shape::new(ShapeType::Triangle, 2500000, 1500000, 4000000, 700000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Self-Actualization");
    
    slides.push(
        SlideContent::new("Maslow's Hierarchy of Needs")
            .add_shape(level5)
            .add_shape(level4)
            .add_shape(level3)
            .add_shape(level2)
            .add_shape(level1)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 17: Venn Diagram (NEW)
    // =========================================================================
    println!("🔷 Slide 17: Venn Diagram");
    
    // Three overlapping circles
    let circle1 = Shape::new(ShapeType::Ellipse, 1500000, 1800000, 3000000, 3000000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Skills");
    let circle2 = Shape::new(ShapeType::Ellipse, 3500000, 1800000, 3000000, 3000000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Passion");
    let circle3 = Shape::new(ShapeType::Ellipse, 2500000, 3200000, 3000000, 3000000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Market Need");
    
    // Center label
    let center = Shape::new(ShapeType::Ellipse, 3200000, 2800000, 1600000, 800000)
        .with_fill(ShapeFill::new("FFFFFF"))
        .with_text("IKIGAI");
    
    slides.push(
        SlideContent::new("Finding Your Ikigai - Venn Diagram")
            .add_shape(circle1)
            .add_shape(circle2)
            .add_shape(circle3)
            .add_shape(center)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 18: Timeline/Roadmap (NEW)
    // =========================================================================
    println!("📊 Slide 18: Project Timeline");
    
    let timeline_table = TableBuilder::new(vec![1500000, 1500000, 1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q2 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q3 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q4 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q1 2025").bold().background_color("4472C4").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Research\n& Planning").background_color("BDD7EE").text_color("1F497D"),
            TableCell::new("Design\nPhase").background_color("BDD7EE").text_color("1F497D"),
            TableCell::new("Development\nSprint 1-3").background_color("C6EFCE").text_color("006100"),
            TableCell::new("Testing\n& QA").background_color("FCE4D6").text_color("C65911"),
            TableCell::new("Launch\n& Support").background_color("E2EFDA").text_color("375623"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("✓ Complete").bold().text_color("2E7D32"),
            TableCell::new("✓ Complete").bold().text_color("2E7D32"),
            TableCell::new("In Progress").text_color("ED7D31"),
            TableCell::new("Planned").text_color("7F7F7F"),
            TableCell::new("Planned").text_color("7F7F7F"),
        ]))
        .position(300000, 2000000)
        .build();
    
    slides.push(
        SlideContent::new("Project Roadmap 2024-2025")
            .table(timeline_table)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 19: Dashboard Summary (NEW)
    // =========================================================================
    println!("🔷 Slide 19: Dashboard with KPIs");
    
    // KPI boxes
    let kpi1 = Shape::new(ShapeType::RoundedRectangle, 300000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Revenue\n\n$2.14M\n+15% YoY");
    let kpi2 = Shape::new(ShapeType::RoundedRectangle, 2500000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Customers\n\n12,450\n+22% YoY");
    let kpi3 = Shape::new(ShapeType::RoundedRectangle, 4700000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("NPS Score\n\n72\n+8 pts");
    let kpi4 = Shape::new(ShapeType::RoundedRectangle, 6900000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("5B9BD5"))
        .with_text("Retention\n\n94%\n+3% YoY");
    
    // Status indicators
    let status1 = Shape::new(ShapeType::Ellipse, 1800000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    let status2 = Shape::new(ShapeType::Ellipse, 4000000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    let status3 = Shape::new(ShapeType::Ellipse, 6200000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("FFC000"));
    let status4 = Shape::new(ShapeType::Ellipse, 8400000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    
    slides.push(
        SlideContent::new("Executive Dashboard - Q1 2024")
            .add_shape(kpi1)
            .add_shape(kpi2)
            .add_shape(kpi3)
            .add_shape(kpi4)
            .add_shape(status1)
            .add_shape(status2)
            .add_shape(status3)
            .add_shape(status4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 20: Summary Slide (NEW)
    // =========================================================================
    println!("📝 Slide 20: Summary with Speaker Notes");
    
    slides.push(
        SlideContent::new("Summary & Next Steps")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Completed: Research, Design, Initial Development")
            .add_bullet("In Progress: Sprint 3 Development")
            .add_bullet("Next: QA Testing Phase (Q4 2024)")
            .add_bullet("Launch Target: Q1 2025")
            .add_bullet("Key Risks: Resource constraints, Timeline pressure")
            .content_size(24)
            .notes("Speaker Notes:\n\n1. Emphasize the progress made\n2. Highlight key achievements\n3. Address any concerns about timeline\n4. Open for Q&A")
    );

    // =========================================================================
    // SLIDE 21: Bullet Styles (NEW v0.2.1)
    // =========================================================================
    println!("🔢 Slide 21: Bullet Styles (NEW)");
    
    // Numbered list
    slides.push(
        SlideContent::new("Bullet Styles - Numbered List")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .with_bullet_style(BulletStyle::Number)
            .add_bullet("First numbered item")
            .add_bullet("Second numbered item")
            .add_bullet("Third numbered item")
            .add_bullet("Fourth numbered item")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 22: Lettered Lists (NEW v0.2.1)
    // =========================================================================
    println!("🔤 Slide 22: Lettered Lists (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Lettered Lists")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_lettered("Option A - First choice")
            .add_lettered("Option B - Second choice")
            .add_lettered("Option C - Third choice")
            .add_lettered("Option D - Fourth choice")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 23: Roman Numerals (NEW v0.2.1)
    // =========================================================================
    println!("🏛️ Slide 23: Roman Numerals (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Roman Numerals")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .with_bullet_style(BulletStyle::RomanUpper)
            .add_bullet("Chapter I - Introduction")
            .add_bullet("Chapter II - Background")
            .add_bullet("Chapter III - Methodology")
            .add_bullet("Chapter IV - Results")
            .add_bullet("Chapter V - Conclusion")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 24: Custom Bullets (NEW v0.2.1)
    // =========================================================================
    println!("⭐ Slide 24: Custom Bullets (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Custom Characters")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_styled_bullet("Star bullet point", BulletStyle::Custom('★'))
            .add_styled_bullet("Arrow bullet point", BulletStyle::Custom('→'))
            .add_styled_bullet("Check bullet point", BulletStyle::Custom('✓'))
            .add_styled_bullet("Diamond bullet point", BulletStyle::Custom('◆'))
            .add_styled_bullet("Heart bullet point", BulletStyle::Custom('♥'))
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 25: Sub-bullets / Hierarchy (NEW v0.2.1)
    // =========================================================================
    println!("📊 Slide 25: Sub-bullets Hierarchy (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Hierarchical Lists")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Main Topic 1")
            .add_sub_bullet("Supporting detail A")
            .add_sub_bullet("Supporting detail B")
            .add_bullet("Main Topic 2")
            .add_sub_bullet("Supporting detail C")
            .add_sub_bullet("Supporting detail D")
            .add_bullet("Main Topic 3")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 26: Text Enhancements (NEW v0.2.1)
    // =========================================================================
    println!("✏️ Slide 26: Text Enhancements (NEW)");
    
    // Use BulletPoint with formatting
    let strikethrough_bullet = BulletPoint::new("Strikethrough: This text is crossed out").strikethrough();
    let highlight_bullet = BulletPoint::new("Highlight: Yellow background for emphasis").highlight("FFFF00");
    let subscript_bullet = BulletPoint::new("Subscript: H₂O - for chemical formulas").subscript();
    let superscript_bullet = BulletPoint::new("Superscript: x² - for math expressions").superscript();
    let bold_colored = BulletPoint::new("Combined: Bold + Red color").bold().color("FF0000");
    
    let mut text_enhancements_slide = SlideContent::new("Text Enhancements - New Formatting")
        .layout(SlideLayout::TitleAndContent)
        .title_color("1F497D")
        .title_bold(true)
        .content_size(24);
    text_enhancements_slide.bullets.push(strikethrough_bullet);
    text_enhancements_slide.bullets.push(highlight_bullet);
    text_enhancements_slide.bullets.push(subscript_bullet);
    text_enhancements_slide.bullets.push(superscript_bullet);
    text_enhancements_slide.bullets.push(bold_colored);
    
    slides.push(text_enhancements_slide);

    // =========================================================================
    // SLIDE 27: Font Size Presets (NEW v0.2.1)
    // =========================================================================
    println!("🔤 Slide 27: Font Size Presets (NEW)");
    
    // Demonstrate different font sizes per bullet
    let large_bullet = BulletPoint::new(&format!("LARGE: {}pt - Extra large text", font_sizes::LARGE)).font_size(font_sizes::LARGE);
    let heading_bullet = BulletPoint::new(&format!("HEADING: {}pt - Section headers", font_sizes::HEADING)).font_size(font_sizes::HEADING);
    let body_bullet = BulletPoint::new(&format!("BODY: {}pt - Regular content", font_sizes::BODY)).font_size(font_sizes::BODY);
    let small_bullet = BulletPoint::new(&format!("SMALL: {}pt - Smaller text", font_sizes::SMALL)).font_size(font_sizes::SMALL);
    let caption_bullet = BulletPoint::new(&format!("CAPTION: {}pt - Captions and notes", font_sizes::CAPTION)).font_size(font_sizes::CAPTION);
    
    let mut font_size_slide = SlideContent::new("Font Size Presets - Each line different size")
        .layout(SlideLayout::TitleAndContent)
        .title_color("1F497D")
        .title_bold(true)
        .title_size(font_sizes::TITLE);
    font_size_slide.bullets.push(large_bullet);
    font_size_slide.bullets.push(heading_bullet);
    font_size_slide.bullets.push(body_bullet);
    font_size_slide.bullets.push(small_bullet);
    font_size_slide.bullets.push(caption_bullet);
    
    slides.push(font_size_slide);

    // =========================================================================
    // SLIDE 28: Theme Colors (NEW v0.2.1)
    // =========================================================================
    println!("🎨 Slide 28: Theme Colors (NEW)");
    
    // Create shapes with theme colors
    let corporate_shape = Shape::new(ShapeType::Rectangle, 500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::CORPORATE.primary))
        .with_text("Corporate");
    
    let modern_shape = Shape::new(ShapeType::Rectangle, 2500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::MODERN.primary))
        .with_text("Modern");
    
    let vibrant_shape = Shape::new(ShapeType::Rectangle, 4500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::VIBRANT.primary))
        .with_text("Vibrant");
    
    let dark_shape = Shape::new(ShapeType::Rectangle, 6500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::DARK.primary))
        .with_text("Dark");
    
    let nature_shape = Shape::new(ShapeType::Rectangle, 500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::NATURE.primary))
        .with_text("Nature");
    
    let tech_shape = Shape::new(ShapeType::Rectangle, 2500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::TECH.primary))
        .with_text("Tech");
    
    let carbon_shape = Shape::new(ShapeType::Rectangle, 4500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::CARBON.primary))
        .with_text("Carbon");
    
    slides.push(
        SlideContent::new("Theme Color Palettes")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_shape(corporate_shape)
            .add_shape(modern_shape)
            .add_shape(vibrant_shape)
            .add_shape(dark_shape)
            .add_shape(nature_shape)
            .add_shape(tech_shape)
            .add_shape(carbon_shape)
    );

    // =========================================================================
    // SLIDE 29: Material & Carbon Design Colors (NEW v0.2.1)
    // =========================================================================
    println!("🌈 Slide 29: Material & Carbon Colors (NEW)");
    
    // Material Design colors
    let material_red = Shape::new(ShapeType::Rectangle, 500000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_RED))
        .with_text("M-Red");
    
    let material_blue = Shape::new(ShapeType::Rectangle, 1900000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_BLUE))
        .with_text("M-Blue");
    
    let material_green = Shape::new(ShapeType::Rectangle, 3300000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_GREEN))
        .with_text("M-Green");
    
    let material_orange = Shape::new(ShapeType::Rectangle, 4700000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_ORANGE))
        .with_text("M-Orange");
    
    let material_purple = Shape::new(ShapeType::Rectangle, 6100000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_PURPLE))
        .with_text("M-Purple");
    
    // Carbon Design colors
    let carbon_blue = Shape::new(ShapeType::Rectangle, 500000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_BLUE_60))
        .with_text("C-Blue");
    
    let carbon_green = Shape::new(ShapeType::Rectangle, 1900000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_GREEN_50))
        .with_text("C-Green");
    
    let carbon_red = Shape::new(ShapeType::Rectangle, 3300000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_RED_60))
        .with_text("C-Red");
    
    let carbon_purple = Shape::new(ShapeType::Rectangle, 4700000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_PURPLE_60))
        .with_text("C-Purple");
    
    let carbon_gray = Shape::new(ShapeType::Rectangle, 6100000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_GRAY_100))
        .with_text("C-Gray");
    
    slides.push(
        SlideContent::new("Material & Carbon Design Colors")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_shape(material_red)
            .add_shape(material_blue)
            .add_shape(material_green)
            .add_shape(material_orange)
            .add_shape(material_purple)
            .add_shape(carbon_blue)
            .add_shape(carbon_green)
            .add_shape(carbon_red)
            .add_shape(carbon_purple)
            .add_shape(carbon_gray)
    );

    // =========================================================================
    // SLIDE 30: Image from Base64 (NEW v0.2.1)
    // =========================================================================
    println!("🖼️ Slide 30: Image from Base64 (NEW)");
    
    // 1x1 red PNG pixel in base64
    let _red_pixel_base64 = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8DwHwAFBQIAX8jx0gAAAABJRU5ErkJggg==";
    
    // Create image from base64 (demonstrating the API)
    let _base64_image = ImageBuilder::from_base64(_red_pixel_base64, 914400, 914400, "PNG")
        .position(4000000, 2500000)
        .build();
    
    slides.push(
        SlideContent::new("Image Loading - New Methods")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Image::new(path) - Load from file path")
            .add_bullet("Image::from_base64(data) - Load from base64 string")
            .add_bullet("Image::from_bytes(data) - Load from raw bytes")
            .add_bullet("ImageBuilder for fluent API configuration")
            .add_bullet("Built-in base64 decoder (no external deps)")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 31: Feature Summary (NEW v0.2.1)
    // =========================================================================
    println!("📋 Slide 31: v0.2.1 Feature Summary (NEW)");
    
    slides.push(
        SlideContent::new("New Features in v0.2.1")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_numbered("BulletStyle: Number, Letter, Roman, Custom")
            .add_numbered("TextFormat: Strikethrough, Highlight")
            .add_numbered("TextFormat: Subscript, Superscript")
            .add_numbered("Font size presets in prelude")
            .add_numbered("Image::from_base64 and from_bytes")
            .add_numbered("Theme color palettes (7 themes)")
            .add_numbered("Material & Carbon Design colors")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 32: Slide Show Settings - Comparison Table (REAL: embedded in presProps.xml)
    // =========================================================================
    println!("🎬 Slide 34: Slide Show Settings (Visual)");

    let show_speaker = SlideShowSettings::new().pen_color(PenColor::red());
    let show_kiosk = SlideShowSettings::kiosk();
    let _show_range = SlideShowSettings::new()
        .show_type(ShowType::Browsed)
        .slide_range(SlideRange::Range { start: 1, end: 10 })
        .without_animation(true);
    let _speaker_xml = show_speaker.to_xml();
    let _kiosk_xml = show_kiosk.to_xml();

    let show_table = TableBuilder::new(vec![2000000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Setting").bold().background_color("1F4E79").text_color("FFFFFF"),
            TableCell::new("Speaker").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Kiosk").bold().background_color("ED7D31").text_color("FFFFFF"),
            TableCell::new("Browsed").bold().background_color("70AD47").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Loop").bold().background_color("D6E4F0"),
            TableCell::new("No"), TableCell::new("Yes").bold().text_color("2E7D32"),
            TableCell::new("No"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Narration").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("No").text_color("C62828"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Animation").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("Yes"),
            TableCell::new("No").text_color("C62828"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Timings").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("Auto"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Slide Range").bold().background_color("D6E4F0"),
            TableCell::new("All"), TableCell::new("All"),
            TableCell::new("1-10"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Pen Color").bold().background_color("D6E4F0"),
            TableCell::new("Red").text_color("FF0000"),
            TableCell::new("Red").text_color("FF0000"),
            TableCell::new("Red").text_color("FF0000"),
        ]))
        .position(300000, 1600000)
        .build();

    // Mode icons
    let icon_speaker = Shape::new(ShapeType::RoundedRectangle, 300000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Speaker: Full control");
    let icon_kiosk = Shape::new(ShapeType::RoundedRectangle, 3100000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Kiosk: Auto-loop");
    let icon_browsed = Shape::new(ShapeType::RoundedRectangle, 5900000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Browsed: Scrollbar");

    slides.push(
        SlideContent::new("Slide Show Settings - Mode Comparison")
            .table(show_table)
            .add_shape(icon_speaker)
            .add_shape(icon_kiosk)
            .add_shape(icon_browsed)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 35: Print Settings - Visual Handout Grid
    // =========================================================================
    println!("🖨️  Slide 35: Print Settings & Handouts (Visual)");

    let print = PrintSettings::new()
        .print_what(PrintWhat::Handouts)
        .color_mode(PrintColorMode::Grayscale)
        .handout_layout(GenHandoutLayout::SlidesPerPage6)
        .frame_slides(true)
        .header("Q1 2025 Strategy Review")
        .footer("Confidential - Internal Use Only")
        .print_date(true)
        .print_page_numbers(true);
    let _prnpr_xml = print.to_prnpr_xml();
    let _handout_xml = print.to_handout_master_xml();

    // Visual: 6-slide handout grid (2 cols x 3 rows)
    let hdr = Shape::new(ShapeType::Rectangle, 300000, 1500000, 4200000, 300000)
        .with_fill(ShapeFill::new("E7E6E6"))
        .with_text("Q1 2025 Strategy Review");
    // Row 1
    let s1 = Shape::new(ShapeType::Rectangle, 400000, 2000000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 1");
    let s2 = Shape::new(ShapeType::Rectangle, 2500000, 2000000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 2");
    // Row 2
    let s3 = Shape::new(ShapeType::Rectangle, 400000, 3200000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 3");
    let s4 = Shape::new(ShapeType::Rectangle, 2500000, 3200000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 4");
    // Row 3
    let s5 = Shape::new(ShapeType::Rectangle, 400000, 4400000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 5");
    let s6 = Shape::new(ShapeType::Rectangle, 2500000, 4400000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 6");
    let ftr = Shape::new(ShapeType::Rectangle, 300000, 5600000, 4200000, 300000)
        .with_fill(ShapeFill::new("E7E6E6"))
        .with_text("Confidential - Internal Use Only");

    // Settings summary table on the right
    let print_table = TableBuilder::new(vec![1800000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Print Settings").bold().background_color("1F4E79").text_color("FFFFFF"),
            TableCell::new("").background_color("1F4E79"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Print What").bold().background_color("D6E4F0"),
            TableCell::new("Handouts"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Color Mode").bold().background_color("D6E4F0"),
            TableCell::new("Grayscale"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Layout").bold().background_color("D6E4F0"),
            TableCell::new("6 slides/page"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Frame Slides").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Date").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Page Numbers").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .position(5000000, 1800000)
        .build();

    slides.push(
        SlideContent::new("Print Handout - 6 Slides Per Page")
            .table(print_table)
            .add_shape(hdr)
            .add_shape(s1).add_shape(s2)
            .add_shape(s3).add_shape(s4)
            .add_shape(s5).add_shape(s6)
            .add_shape(ftr)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 36: Advanced Table Merging - Actual Merged Table
    // =========================================================================
    println!("📊 Slide 36: Advanced Table Merging (Visual)");

    // Use TableMergeMap to compute states, then build a visual table
    let mut merge_map = TableMergeMap::new(5, 4);
    merge_map.merge_cells(0, 0, 1, 4).unwrap(); // Title row spans all 4 cols
    merge_map.merge_cells(1, 0, 2, 1).unwrap(); // "Products" spans 2 rows
    merge_map.merge_cells(3, 0, 2, 1).unwrap(); // "Services" spans 2 rows

    // Show merge state labels
    let state_00 = merge_map.cell_state(0, 0); // Anchor gridSpan=4
    let state_01 = merge_map.cell_state(0, 1); // HMerge
    let state_10 = merge_map.cell_state(1, 0); // Anchor rowSpan=2
    let state_20 = merge_map.cell_state(2, 0); // VMerge
    println!("   ├── (0,0): {}", state_00.to_xml_attrs().trim());
    println!("   ├── (0,1): {}", state_01.to_xml_attrs().trim());
    println!("   ├── (1,0): {}", state_10.to_xml_attrs().trim());
    println!("   └── (2,0): {}", state_20.to_xml_attrs().trim());

    // Build the table with REAL merge attributes (gridSpan, rowSpan, hMerge, vMerge)
    let merge_table = TableBuilder::new(vec![1500000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2025 Revenue Report").bold().background_color("1F4E79").text_color("FFFFFF").grid_span(4),
            TableCell::new("").background_color("1F4E79").h_merge(),
            TableCell::new("").background_color("1F4E79").h_merge(),
            TableCell::new("").background_color("1F4E79").h_merge(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Products").bold().background_color("BDD7EE").text_color("1F497D").row_span(2),
            TableCell::new("Hardware").background_color("E2EFDA"),
            TableCell::new("$450,000").text_color("2E7D32").align_right(),
            TableCell::new("+12%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("").background_color("BDD7EE").v_merge(),
            TableCell::new("Software").background_color("E2EFDA"),
            TableCell::new("$680,000").text_color("2E7D32").align_right(),
            TableCell::new("+25%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Services").bold().background_color("FCE4D6").text_color("C65911").row_span(2),
            TableCell::new("Consulting").background_color("FFF2CC"),
            TableCell::new("$320,000").text_color("2E7D32").align_right(),
            TableCell::new("+8%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("").background_color("FCE4D6").v_merge(),
            TableCell::new("Support").background_color("FFF2CC"),
            TableCell::new("$190,000").text_color("2E7D32").align_right(),
            TableCell::new("+5%").bold().text_color("2E7D32").align_right(),
        ]))
        .position(300000, 1600000)
        .build();

    // Legend shapes
    let legend_anchor = Shape::new(ShapeType::RoundedRectangle, 300000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Anchor (gridSpan/rowSpan)");
    let legend_hmerge = Shape::new(ShapeType::RoundedRectangle, 2500000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("hMerge (col covered)");
    let legend_vmerge = Shape::new(ShapeType::RoundedRectangle, 4700000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("vMerge (row covered)");
    let legend_normal = Shape::new(ShapeType::RoundedRectangle, 6900000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"))
        .with_text("Normal (no merge)");

    slides.push(
        SlideContent::new("Advanced Table Merging - Merged Cells")
            .table(merge_table)
            .add_shape(legend_anchor)
            .add_shape(legend_hmerge)
            .add_shape(legend_vmerge)
            .add_shape(legend_normal)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // Build PresentationSettings with all advanced features
    // =========================================================================
    println!("\n⚙️  Building Presentation Settings...");

    // Slide show settings (embedded in presProps.xml as <p:showPr>)
    let show_settings = SlideShowSettings::new()
        .show_type(ShowType::Speaker)
        .pen_color(PenColor::red())
        .use_timings(true);
    println!("   ├── Slide Show: Speaker mode, red pen, timings enabled");
    println!("   │   └── XML: {} bytes", show_settings.to_xml().len());

    // Print settings (embedded in presProps.xml as <p:prnPr>)
    let print_settings = PrintSettings::new()
        .print_what(PrintWhat::Handouts)
        .color_mode(PrintColorMode::Grayscale)
        .handout_layout(GenHandoutLayout::SlidesPerPage6)
        .frame_slides(true)
        .header("Q1 2025 Strategy Review")
        .footer("Confidential - Internal Use Only")
        .print_date(true)
        .print_page_numbers(true);
    println!("   └── Print: Handouts, 6/page, grayscale, framed");
    println!("       └── XML: {} bytes", print_settings.to_prnpr_xml().len());

    let pres_settings = PresentationSettings::new()
        .slide_show(show_settings)
        .print(print_settings);
    println!("   All settings configured → presProps.xml");

    // =========================================================================
    // Generate PPTX with real integrated features
    // =========================================================================
    println!("\n📦 Generating PPTX with integrated features...");
    let pptx_data = create_pptx_with_settings(
        "PPTX-RS Element Showcase",
        slides.clone(),
        Some(pres_settings),
    )?;
    fs::write("comprehensive_demo.pptx", &pptx_data)?;
    println!("   ✓ Created comprehensive_demo.pptx ({} slides, {} bytes)", 
             slides.len(), pptx_data.len());

    // =========================================================================
    // Package Analysis - Demonstrate Reading
    // =========================================================================
    println!("\n📖 Package Analysis (Read Capability):");
    
    let package = Package::open("comprehensive_demo.pptx")?;
    let paths = package.part_paths();
    
    let slide_count = paths.iter()
        .filter(|p| p.starts_with("ppt/slides/slide") && p.ends_with(".xml"))
        .count();
    
    println!("   ├── Total parts: {}", package.part_count());
    println!("   ├── Slides: {}", slide_count);
    println!("   └── Package opened and analyzed successfully");

    // =========================================================================
    // NEW: Parts API Demonstration
    // =========================================================================
    println!("\n🧩 Parts API Demonstration:");
    
    // SlideLayoutPart - 11 layout types
    println!("   ┌── SlideLayoutPart (11 layout types):");
    let layouts = [
        LayoutType::Title,
        LayoutType::TitleAndContent,
        LayoutType::SectionHeader,
        LayoutType::TwoContent,
        LayoutType::Comparison,
        LayoutType::TitleOnly,
        LayoutType::Blank,
        LayoutType::ContentWithCaption,
        LayoutType::PictureWithCaption,
        LayoutType::TitleAndVerticalText,
        LayoutType::VerticalTitleAndText,
    ];
    for (i, layout_type) in layouts.iter().enumerate() {
        let layout = SlideLayoutPart::new(i + 1, *layout_type);
        if i < 3 {
            println!("   │   ├── {}: {} ({})", i + 1, layout_type.name(), layout.path());
        }
    }
    println!("   │   └── ... and {} more layout types", layouts.len() - 3);
    
    // SlideMasterPart
    println!("   ├── SlideMasterPart:");
    let mut master = SlideMasterPart::new(1);
    master.set_name("Custom Master");
    master.add_layout_rel_id("rId2");
    master.add_layout_rel_id("rId3");
    println!("   │   ├── Name: {}", master.name());
    println!("   │   ├── Path: {}", master.path());
    println!("   │   └── Layouts: {} linked", master.layout_rel_ids().len());
    
    // ThemePart - Colors and Fonts
    println!("   ├── ThemePart (colors & fonts):");
    let mut theme = ThemePart::new(1);
    theme.set_name("Corporate Theme");
    theme.set_major_font("Arial");
    theme.set_minor_font("Calibri");
    theme.set_color("accent1", "FF5733");
    theme.set_color("accent2", "33FF57");
    let theme_xml = theme.to_xml()?;
    println!("   │   ├── Name: {}", theme.name());
    println!("   │   ├── Major Font: Arial");
    println!("   │   ├── Minor Font: Calibri");
    println!("   │   └── XML size: {} bytes", theme_xml.len());
    
    // NotesSlidePart - Speaker notes
    println!("   ├── NotesSlidePart (speaker notes):");
    let notes = NotesSlidePart::with_text(1, "Remember to:\n- Introduce yourself\n- Explain the agenda\n- Ask for questions");
    let notes_xml = notes.to_xml()?;
    println!("   │   ├── Path: {}", notes.path());
    println!("   │   ├── Text: \"{}...\"", &notes.notes_text()[..20.min(notes.notes_text().len())]);
    println!("   │   └── XML size: {} bytes", notes_xml.len());
    
    // AppPropertiesPart - Application metadata
    println!("   ├── AppPropertiesPart (metadata):");
    let mut app_props = AppPropertiesPart::new();
    app_props.set_company("Acme Corporation");
    app_props.set_slides(slides.len() as u32);
    let app_xml = app_props.to_xml()?;
    println!("   │   ├── Company: Acme Corporation");
    println!("   │   ├── Slides: {}", slides.len());
    println!("   │   └── XML size: {} bytes", app_xml.len());
    
    // MediaPart - Video/Audio formats
    println!("   ├── MediaPart (10 media formats):");
    println!("   │   ├── Video: mp4, webm, avi, wmv, mov");
    println!("   │   ├── Audio: mp3, wav, wma, m4a, ogg");
    let sample_media = MediaPart::new(1, MediaFormat::Mp4, vec![0; 100]);
    println!("   │   └── Sample: {} ({})", sample_media.path(), sample_media.format().mime_type());
    
    // TablePart - Table with formatting
    println!("   ├── TablePart (cell formatting):");
    let table_part = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Header 1").bold().background("4472C4"),
            TableCellPart::new("Header 2").bold().background("4472C4"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Data 1").color("333333"),
            TableCellPart::new("Data 2").italic(),
        ]))
        .position(EMU_PER_INCH, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 6, EMU_PER_INCH * 2);
    let table_xml = table_part.to_slide_xml(10);
    println!("   │   ├── Rows: {}", table_part.rows.len());
    println!("   │   ├── Features: bold, italic, colors, backgrounds");
    println!("   │   └── XML size: {} bytes", table_xml.len());
    
    // ContentTypesPart
    println!("   └── ContentTypesPart:");
    let mut content_types = ContentTypesPart::new();
    content_types.add_presentation();
    content_types.add_slide(1);
    content_types.add_slide_layout(1);
    content_types.add_slide_master(1);
    content_types.add_theme(1);
    content_types.add_core_properties();
    content_types.add_app_properties();
    let ct_xml = content_types.to_xml()?;
    println!("       ├── Path: {}", content_types.path());
    println!("       └── XML size: {} bytes", ct_xml.len());

    // =========================================================================
    // NEW: Elements API Demonstration
    // =========================================================================
    println!("\n🎨 Elements API Demonstration:");
    
    // Color types
    println!("   ┌── Color Types:");
    let rgb = RgbColor::new(255, 87, 51);
    let rgb_hex = RgbColor::from_hex("#4472C4").unwrap();
    let scheme = SchemeColor::Accent1;
    let color = Color::rgb(100, 149, 237);
    println!("   │   ├── RgbColor::new(255, 87, 51) → {}", rgb.to_hex());
    println!("   │   ├── RgbColor::from_hex(\"#4472C4\") → {}", rgb_hex.to_hex());
    println!("   │   ├── SchemeColor::Accent1 → {}", scheme.as_str());
    println!("   │   └── Color::rgb(100, 149, 237) → XML: {}", color.to_xml().chars().take(30).collect::<String>());
    
    // Position and Size
    println!("   ├── Position & Size (EMU units):");
    let pos = Position::from_inches(1.0, 2.0);
    let size = Size::from_inches(4.0, 3.0);
    println!("   │   ├── Position::from_inches(1.0, 2.0) → x={}, y={}", pos.x, pos.y);
    println!("   │   ├── Size::from_inches(4.0, 3.0) → w={}, h={}", size.width, size.height);
    println!("   │   └── EMU_PER_INCH = {}", EMU_PER_INCH);
    
    // Transform
    println!("   └── Transform (position + size + rotation):");
    let transform = Transform::from_inches(1.0, 1.5, 3.0, 2.0).with_rotation(45.0);
    let transform_xml = transform.to_xml();
    println!("       ├── Transform::from_inches(1.0, 1.5, 3.0, 2.0)");
    println!("       ├── .with_rotation(45.0)");
    println!("       └── XML: {}...", &transform_xml[..50.min(transform_xml.len())]);

    // =========================================================================
    // NEW: Advanced Features Demonstration
    // =========================================================================
    println!("\n🚀 Advanced Features Demonstration:");

    // -------------------------------------------------------------------------
    // Complex Table Examples
    // -------------------------------------------------------------------------
    println!("   ┌── Complex Table Examples:");
    
    // Example 1: Financial Report Table
    println!("   │   ┌── Financial Report Table (5x4 with formatting):");
    let financial_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Q1 2024 Financial Summary")
                .col_span(4)
                .bold()
                .center()
                .background("1F4E79")
                .color("FFFFFF")
                .font_size(14)
                .font("Arial Black"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Category").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Revenue").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Expenses").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Profit").bold().center().background("2E75B6").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Product Sales").align(HorizontalAlign::Left),
            TableCellPart::new("$1,250,000").align(HorizontalAlign::Right).color("2E7D32"),
            TableCellPart::new("$450,000").align(HorizontalAlign::Right).color("C62828"),
            TableCellPart::new("$800,000").align(HorizontalAlign::Right).bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Services").align(HorizontalAlign::Left),
            TableCellPart::new("$890,000").align(HorizontalAlign::Right).color("2E7D32"),
            TableCellPart::new("$320,000").align(HorizontalAlign::Right).color("C62828"),
            TableCellPart::new("$570,000").align(HorizontalAlign::Right).bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Total").bold().background("E7E6E6"),
            TableCellPart::new("$2,140,000").bold().align(HorizontalAlign::Right).background("E7E6E6"),
            TableCellPart::new("$770,000").bold().align(HorizontalAlign::Right).background("E7E6E6"),
            TableCellPart::new("$1,370,000").bold().align(HorizontalAlign::Right).background("C6EFCE").color("006100"),
        ]))
        .position(EMU_PER_INCH / 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 8, EMU_PER_INCH * 3);
    let fin_xml = financial_table.to_slide_xml(100);
    println!("   │   │   ├── Merged header spanning 4 columns");
    println!("   │   │   ├── Color-coded values (green=positive, red=negative)");
    println!("   │   │   ├── Custom fonts and sizes");
    println!("   │   │   └── XML: {} bytes", fin_xml.len());

    // Example 2: Comparison Matrix
    println!("   │   ├── Comparison Matrix (features vs products):");
    let matrix_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Feature").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Basic").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Pro").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Enterprise").bold().center().background("4472C4").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Storage").align(HorizontalAlign::Left),
            TableCellPart::new("5 GB").center(),
            TableCellPart::new("50 GB").center(),
            TableCellPart::new("Unlimited").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Users").align(HorizontalAlign::Left),
            TableCellPart::new("1").center(),
            TableCellPart::new("10").center(),
            TableCellPart::new("Unlimited").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Support").align(HorizontalAlign::Left),
            TableCellPart::new("Email").center(),
            TableCellPart::new("24/7 Chat").center(),
            TableCellPart::new("Dedicated").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Price/mo").bold().background("F2F2F2"),
            TableCellPart::new("$9").center().bold().background("F2F2F2"),
            TableCellPart::new("$29").center().bold().background("F2F2F2"),
            TableCellPart::new("$99").center().bold().background("F2F2F2"),
        ]));
    println!("   │   │   └── 5x4 matrix with alternating styles");

    // Example 3: Schedule/Timeline Table
    println!("   │   └── Schedule Table (with row spans):");
    let schedule_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Time").bold().center().background("70AD47").color("FFFFFF"),
            TableCellPart::new("Monday").bold().center().background("70AD47").color("FFFFFF"),
            TableCellPart::new("Tuesday").bold().center().background("70AD47").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("9:00 AM").center().background("E2EFDA"),
            TableCellPart::new("Team Standup").center().row_span(2).valign(VerticalAlign::Middle).background("BDD7EE"),
            TableCellPart::new("Code Review").center(),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("10:00 AM").center().background("E2EFDA"),
            TableCellPart::merged(),
            TableCellPart::new("Sprint Planning").center().background("FCE4D6"),
        ]));
    println!("   │       └── Row spans for multi-hour events");

    // -------------------------------------------------------------------------
    // Complex Animation Sequences
    // -------------------------------------------------------------------------
    println!("   ├── Complex Animation Sequences:");
    
    // Sequence 1: Title entrance with staggered content
    println!("   │   ┌── Staggered Entrance Sequence:");
    let title_anim = Animation::new(2, AnimationEffect::Fade)
        .trigger(AnimationTrigger::OnClick)
        .duration(500);
    let content1 = Animation::new(3, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(200);
    let content2 = Animation::new(4, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(100);
    let content3 = Animation::new(5, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(100);
    let staggered = SlideAnimations::new()
        .add(title_anim)
        .add(content1)
        .add(content2)
        .add(content3)
        .transition(SlideTransition::new(TransitionEffect::Push).direction(AnimationDirection::Left).duration(750));
    let staggered_xml = staggered.to_timing_xml()?;
    println!("   │   │   ├── Title: Fade on click");
    println!("   │   │   ├── Content 1-3: FlyIn with 100ms stagger");
    println!("   │   │   ├── Transition: Push from left (750ms)");
    println!("   │   │   └── XML: {} bytes", staggered_xml.len());

    // Sequence 2: Emphasis and exit
    println!("   │   ├── Emphasis + Exit Sequence:");
    let emphasis = Animation::new(6, AnimationEffect::Pulse)
        .trigger(AnimationTrigger::OnClick)
        .duration(1000)
        .repeat(3);
    let exit = Animation::new(6, AnimationEffect::FadeOut)
        .trigger(AnimationTrigger::AfterPrevious)
        .duration(500);
    let emphasis_seq = SlideAnimations::new()
        .add(emphasis)
        .add(exit);
    println!("   │   │   ├── Pulse 3x on click, then fade out");
    println!("   │   │   └── Same shape, sequential effects");

    // Sequence 3: Motion path
    println!("   │   └── Motion Path Animation:");
    let motion = Animation::new(7, AnimationEffect::Lines)
        .trigger(AnimationTrigger::OnClick)
        .duration(2000);
    println!("   │       └── Custom path: Lines, Arcs, Turns, Loops");

    // -------------------------------------------------------------------------
    // SmartArt Combinations
    // -------------------------------------------------------------------------
    println!("   ├── SmartArt Layout Examples:");
    
    // Process flow
    println!("   │   ┌── Process Flow (5 steps):");
    let process = SmartArtPart::new(1, SmartArtLayout::BasicProcess)
        .add_items(vec!["Research", "Design", "Develop", "Test", "Deploy"])
        .position(EMU_PER_INCH / 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 8, EMU_PER_INCH * 2);
    println!("   │   │   └── {} nodes in horizontal flow", process.nodes().len());

    // Organization chart
    println!("   │   ├── Organization Chart:");
    let org = SmartArtPart::new(2, SmartArtLayout::OrgChart)
        .add_items(vec!["CEO", "CTO", "CFO", "VP Engineering", "VP Sales"]);
    println!("   │   │   └── Hierarchical structure with {} positions", org.nodes().len());

    // Cycle diagram
    println!("   │   ├── Cycle Diagram:");
    let cycle = SmartArtPart::new(3, SmartArtLayout::BasicCycle)
        .add_items(vec!["Plan", "Do", "Check", "Act"]);
    println!("   │   │   └── PDCA cycle with {} phases", cycle.nodes().len());

    // Venn diagram
    println!("   │   ├── Venn Diagram:");
    let venn = SmartArtPart::new(4, SmartArtLayout::BasicVenn)
        .add_items(vec!["Skills", "Passion", "Market Need"]);
    println!("   │   │   └── 3-circle Venn for Ikigai concept");

    // Pyramid
    println!("   │   └── Pyramid:");
    let pyramid = SmartArtPart::new(5, SmartArtLayout::BasicPyramid)
        .add_items(vec!["Self-Actualization", "Esteem", "Love/Belonging", "Safety", "Physiological"]);
    println!("   │       └── Maslow's hierarchy with {} levels", pyramid.nodes().len());

    // -------------------------------------------------------------------------
    // 3D Model Configurations
    // -------------------------------------------------------------------------
    println!("   ├── 3D Model Configurations:");
    
    // Product showcase
    println!("   │   ┌── Product Showcase:");
    let product_3d = Model3DPart::new(1, Model3DFormat::Glb, vec![0; 100])
        .camera(CameraPreset::IsometricTopUp)
        .rotation(0.0, 45.0, 0.0)
        .zoom(1.2)
        .position(EMU_PER_INCH * 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 4, EMU_PER_INCH * 4);
    println!("   │   │   ├── Camera: Isometric top-up view");
    println!("   │   │   ├── Rotation: 45° Y-axis for best angle");
    println!("   │   │   └── Zoom: 1.2x for detail");

    // Architectural model
    println!("   │   ├── Architectural Model:");
    let arch_3d = Model3DPart::new(2, Model3DFormat::Gltf, vec![0; 100])
        .camera(CameraPreset::Front)
        .rotation(15.0, -30.0, 0.0)
        .ambient_light("FFFFCC");
    println!("   │   │   ├── Camera: Front view with tilt");
    println!("   │   │   └── Ambient: Warm lighting (FFFFCC)");

    // Technical diagram
    println!("   │   └── Technical Diagram:");
    let tech_3d = Model3DPart::new(3, Model3DFormat::Obj, vec![0; 100])
        .camera(CameraPreset::IsometricOffAxis1Top)
        .rotation(0.0, 0.0, 0.0);
    println!("   │       └── Camera: Off-axis isometric for exploded view");

    // -------------------------------------------------------------------------
    // Theme + Master + Layout Combination
    // -------------------------------------------------------------------------
    println!("   ├── Theme + Master + Layout Integration:");
    
    // Corporate theme
    let mut corp_theme = ThemePart::new(1);
    corp_theme.set_name("Corporate Blue");
    corp_theme.set_major_font("Segoe UI");
    corp_theme.set_minor_font("Segoe UI Light");
    corp_theme.set_color("dk1", "000000");
    corp_theme.set_color("lt1", "FFFFFF");
    corp_theme.set_color("dk2", "1F497D");
    corp_theme.set_color("lt2", "EEECE1");
    corp_theme.set_color("accent1", "4472C4");
    corp_theme.set_color("accent2", "ED7D31");
    corp_theme.set_color("accent3", "A5A5A5");
    corp_theme.set_color("accent4", "FFC000");
    corp_theme.set_color("accent5", "5B9BD5");
    corp_theme.set_color("accent6", "70AD47");
    let theme_xml = corp_theme.to_xml()?;
    println!("   │   ├── Theme: Corporate Blue");
    println!("   │   │   ├── Fonts: Segoe UI / Segoe UI Light");
    println!("   │   │   ├── 12 color slots defined");
    println!("   │   │   └── XML: {} bytes", theme_xml.len());

    // Master with multiple layouts
    let mut corp_master = SlideMasterPart::new(1);
    corp_master.set_name("Corporate Master");
    corp_master.add_layout_rel_id("rId2"); // Title
    corp_master.add_layout_rel_id("rId3"); // Title + Content
    corp_master.add_layout_rel_id("rId4"); // Section Header
    corp_master.add_layout_rel_id("rId5"); // Two Content
    corp_master.add_layout_rel_id("rId6"); // Comparison
    corp_master.add_layout_rel_id("rId7"); // Title Only
    corp_master.add_layout_rel_id("rId8"); // Blank
    println!("   │   └── Master: {} with {} layouts linked", corp_master.name(), corp_master.layout_rel_ids().len());

    // -------------------------------------------------------------------------
    // VBA + Custom XML Integration
    // -------------------------------------------------------------------------
    println!("   ├── VBA + Custom XML Integration:");
    
    // VBA with multiple modules
    let vba_project = VbaProjectPart::new()
        .add_module(VbaModule::new("AutoRun", r#"
Sub Auto_Open()
    MsgBox "Welcome to the presentation!"
End Sub

Sub NavigateToSlide(slideNum As Integer)
    SlideShowWindows(1).View.GotoSlide slideNum
End Sub
"#))
        .add_module(VbaModule::new("DataHelpers", r#"
Function GetCustomData(key As String) As String
    ' Read from Custom XML part
    GetCustomData = ActivePresentation.CustomXMLParts(1).SelectSingleNode("//" & key).Text
End Function
"#))
        .add_module(VbaModule::class("SlideController", r#"
Private currentSlide As Integer

Public Sub NextSlide()
    currentSlide = currentSlide + 1
    NavigateToSlide currentSlide
End Sub
"#));
    println!("   │   ├── VBA Project:");
    println!("   │   │   ├── AutoRun: Auto_Open, NavigateToSlide");
    println!("   │   │   ├── DataHelpers: GetCustomData (reads Custom XML)");
    println!("   │   │   └── SlideController: Class for navigation");

    // Custom XML with structured data
    let app_config = CustomXmlPart::new(1, "presentationConfig")
        .namespace("http://company.com/pptx/config")
        .property("version", "2.1.0")
        .property("author", "Demo User")
        .property("department", "Engineering")
        .property("confidentiality", "Internal")
        .property("lastModified", "2024-01-15T10:30:00Z");
    let config_xml = app_config.to_xml()?;
    println!("   │   └── Custom XML:");
    println!("   │       ├── Namespace: http://company.com/pptx/config");
    println!("   │       ├── Properties: version, author, department, etc.");
    println!("   │       └── XML: {} bytes", config_xml.len());

    // -------------------------------------------------------------------------
    // Embedded Fonts with Variants
    // -------------------------------------------------------------------------
    println!("   ├── Embedded Font Collection:");
    let mut font_collection = EmbeddedFontCollection::new();
    font_collection.add("Corporate Sans", vec![0; 1000]);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::Bold);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::Italic);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::BoldItalic);
    font_collection.add("Code Mono", vec![0; 800]);
    let fonts_xml = font_collection.to_xml();
    println!("   │   ├── Corporate Sans: Regular, Bold, Italic, BoldItalic");
    println!("   │   ├── Code Mono: Regular");
    println!("   │   ├── Total: {} font files", font_collection.len());
    println!("   │   └── XML: {} bytes", fonts_xml.len());

    // -------------------------------------------------------------------------
    // Handout with Full Configuration
    // -------------------------------------------------------------------------
    println!("   └── Handout Master Configuration:");
    let handout = HandoutMasterPart::new()
        .layout(HandoutLayout::SlidesPerPage6)
        .header("Q1 2024 Strategy Review")
        .footer("Confidential - Internal Use Only");
    let handout_xml = handout.to_xml()?;
    println!("       ├── Layout: 6 slides per page");
    println!("       ├── Header: Q1 2024 Strategy Review");
    println!("       ├── Footer: Confidential - Internal Use Only");
    println!("       └── XML: {} bytes", handout_xml.len());

    // =========================================================================
    // Summary
    // =========================================================================
    println!("\n╔══════════════════════════════════════════════════════════════╗");
    println!("║                    Element Coverage Summary                   ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  LAYOUTS (6 types):                                          ║");
    println!("║    ✓ CenteredTitle    ✓ TitleOnly      ✓ TitleAndContent     ║");
    println!("║    ✓ TitleAndBigContent  ✓ TwoColumn   ✓ Blank               ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  TEXT FORMATTING:                                            ║");
    println!("║    ✓ Bold            ✓ Italic         ✓ Underline            ║");
    println!("║    ✓ Font Size       ✓ Font Color     ✓ Title/Content styles ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  TABLES:                                                     ║");
    println!("║    ✓ Multiple rows/columns  ✓ Bold cells  ✓ Background colors║");
    println!("║    ✓ Header styling         ✓ Position control               ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  CHARTS:                                                     ║");
    println!("║    ✓ Bar Chart       ✓ Line Chart     ✓ Pie Chart            ║");
    println!("║    ✓ Multiple series ✓ Categories                            ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  SHAPES:                                                     ║");
    println!("║    ✓ Rectangle       ✓ Ellipse        ✓ RoundedRectangle     ║");
    println!("║    ✓ Triangle        ✓ Diamond        ✓ Color fills          ║");
    println!("║    ✓ Gradient fills  ✓ Transparency   ✓ Text in shapes       ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  CONNECTORS (NEW):                                           ║");
    println!("║    ✓ Straight        ✓ Elbow          ✓ Curved               ║");
    println!("║    ✓ Arrow types     ✓ Dash styles    ✓ Line colors/widths   ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  IMAGES:                                                     ║");
    println!("║    ✓ Image placeholders  ✓ Position   ✓ Dimensions           ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  PACKAGE:                                                    ║");
    println!("║    ✓ Create PPTX     ✓ Read PPTX      ✓ Analyze contents     ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  PARTS API (NEW):                                            ║");
    println!("║    ✓ SlideLayoutPart (11 types)  ✓ SlideMasterPart           ║");
    println!("║    ✓ ThemePart (colors/fonts)    ✓ NotesSlidePart            ║");
    println!("║    ✓ AppPropertiesPart           ✓ MediaPart (10 formats)    ║");
    println!("║    ✓ TablePart (cell formatting) ✓ ContentTypesPart          ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  ELEMENTS API:                                               ║");
    println!("║    ✓ RgbColor        ✓ SchemeColor    ✓ Color enum           ║");
    println!("║    ✓ Position        ✓ Size           ✓ Transform            ║");
    println!("║    ✓ EMU conversions (inches, cm, mm, pt)                    ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  ADVANCED FEATURES (NEW):                                    ║");
    println!("║    ✓ Animation (50+ effects)  ✓ Transitions (27 types)       ║");
    println!("║    ✓ SmartArt (25 layouts)    ✓ 3D Models (GLB/GLTF/OBJ)     ║");
    println!("║    ✓ VBA Macros (.pptm)       ✓ Embedded Fonts               ║");
    println!("║    ✓ Custom XML               ✓ Handout Master               ║");
    println!("║    ✓ Table borders/alignment  ✓ Merged cells                 ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  Output: comprehensive_demo.pptx ({} slides, {} KB)         ║", 
             slides.len(), pptx_data.len() / 1024);
    println!("╚══════════════════════════════════════════════════════════════╝");

    Ok(())
}

pub fn content_italic(self, italic: bool) -> Self

Examples found in repository

examples/text_styling_complete.rs (line 67)

fn create_italic_underline_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Italic Text")
            .title_italic(true)
            .add_bullet("This is italic content")
            .add_bullet("More italic text here"),
        SlideContent::new("Underlined Text")
            .title_underline(true)
            .content_underline(true)
            .add_bullet("Underlined bullet point 1")
            .add_bullet("Underlined bullet point 2"),
        SlideContent::new("Combined Effects")
            .title_italic(true)
            .title_underline(true)
            .content_italic(true)
            .add_bullet("Italic and underlined content")
            .add_bullet("Multiple effects combined"),
    ];

    let pptx_data = create_pptx_with_content("Italic and Underline", slides)?;
    fs::write("examples/output/italic_underline.pptx", pptx_data)?;
    Ok(())
}

fn create_colored_text_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Red Title")
            .title_color("FF0000")
            .add_bullet("Red title text")
            .add_bullet("Regular content"),
        SlideContent::new("Blue Content")
            .content_color("0000FF")
            .add_bullet("Blue bullet point 1")
            .add_bullet("Blue bullet point 2")
            .add_bullet("Blue bullet point 3"),
        SlideContent::new("Green Title & Content")
            .title_color("00AA00")
            .content_color("00AA00")
            .add_bullet("Green title and content")
            .add_bullet("All text is green"),
        SlideContent::new("Purple Accent")
            .title_color("9933FF")
            .add_bullet("Purple title")
            .add_bullet("Regular content"),
    ];

    let pptx_data = create_pptx_with_content("Colored Text", slides)?;
    fs::write("examples/output/colored_text.pptx", pptx_data)?;
    Ok(())
}

fn create_combined_styling_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Bold & Italic & Red")
            .title_bold(true)
            .title_italic(true)
            .title_color("FF0000")
            .title_size(52)
            .add_bullet("Regular content"),
        SlideContent::new("Underlined Blue Content")
            .content_underline(true)
            .content_color("0000FF")
            .content_bold(true)
            .add_bullet("Bold, underlined, blue bullet")
            .add_bullet("Multiple effects applied"),
        SlideContent::new("Mixed Effects")
            .title_italic(true)
            .title_color("FF6600")
            .content_bold(true)
            .content_underline(true)
            .content_color("0066FF")
            .add_bullet("Title: italic, orange")
            .add_bullet("Content: bold, underlined, blue"),
        SlideContent::new("Professional Look")
            .title_bold(true)
            .title_size(48)
            .title_color("003366")
            .content_size(24)
            .add_bullet("Clean, professional styling")
            .add_bullet("Dark blue title with bold")
            .add_bullet("Larger content text"),
    ];

    let pptx_data = create_pptx_with_content("Combined Styling", slides)?;
    fs::write("examples/output/combined_styling.pptx", pptx_data)?;
    Ok(())
}

fn create_professional_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Company Presentation")
            .title_bold(true)
            .title_size(56)
            .title_color("003366")
            .content_size(32)
            .add_bullet("2025 Annual Review"),
        SlideContent::new("Key Highlights")
            .title_bold(true)
            .title_color("003366")
            .content_bold(true)
            .content_color("0066CC")
            .add_bullet("Revenue growth: +25%")
            .add_bullet("Market expansion: 3 new regions")
            .add_bullet("Team growth: +50 employees"),
        SlideContent::new("Strategic Initiatives")
            .title_italic(true)
            .title_color("FF6600")
            .content_underline(true)
            .add_bullet("Digital transformation")
            .add_bullet("Customer experience improvement")
            .add_bullet("Sustainability focus"),
        SlideContent::new("Q1 2025 Goals")
            .title_bold(true)
            .title_underline(true)
            .title_color("003366")
            .content_bold(true)
            .add_bullet("Launch new product line")
            .add_bullet("Expand to 5 new markets")
            .add_bullet("Achieve 30% revenue growth"),
        SlideContent::new("Thank You")
            .title_bold(true)
            .title_size(60)
            .title_color("003366")
            .content_italic(true)
            .content_size(28)
            .add_bullet("Questions & Discussion"),
    ];

    let pptx_data = create_pptx_with_content("Professional Presentation", slides)?;
    fs::write("examples/output/professional.pptx", pptx_data)?;
    Ok(())
}

examples/comprehensive_demo.rs (line 118)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    println!("╔══════════════════════════════════════════════════════════════╗");
    println!("║       PPTX-RS Element Showcase - Complete Coverage           ║");
    println!("╚══════════════════════════════════════════════════════════════╝\n");

    let mut slides = Vec::new();

    // =========================================================================
    // SLIDE 1: CenteredTitle Layout + Title Formatting
    // =========================================================================
    println!("📐 Slide 1: CenteredTitle Layout + Title Formatting");
    slides.push(
        SlideContent::new("PPTX-RS Element Showcase")
            .layout(SlideLayout::CenteredTitle)
            .title_size(54)
            .title_bold(true)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 2: TitleOnly Layout
    // =========================================================================
    println!("📐 Slide 2: TitleOnly Layout");
    slides.push(
        SlideContent::new("Section: Slide Layouts")
            .layout(SlideLayout::TitleOnly)
            .title_size(48)
            .title_bold(true)
            .title_color("C0504D")
    );

    // =========================================================================
    // SLIDE 3: TitleAndContent Layout + All Text Formatting
    // =========================================================================
    println!("📝 Slide 3: TitleAndContent + Text Formatting");
    slides.push(
        SlideContent::new("Text Formatting Options")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .title_italic(true)
            .title_underline(true)
            .title_size(44)
            .add_bullet("Normal text (default)")
            .add_bullet("Bold content text")
            .add_bullet("Italic content text")
            .add_bullet("Underlined content")
            .add_bullet("Custom font size (28pt)")
            .add_bullet("Custom color (#4F81BD)")
            .content_bold(true)
            .content_italic(true)
            .content_underline(true)
            .content_size(28)
            .content_color("4F81BD")
    );

    // =========================================================================
    // SLIDE 4: TitleAndBigContent Layout
    // =========================================================================
    println!("📐 Slide 4: TitleAndBigContent Layout");
    slides.push(
        SlideContent::new("Key Highlights")
            .layout(SlideLayout::TitleAndBigContent)
            .title_color("1F497D")
            .add_bullet("Large content area for emphasis")
            .add_bullet("Perfect for key messages")
            .add_bullet("Smaller title, bigger content")
            .content_bold(true)
            .content_size(32)
    );

    // =========================================================================
    // SLIDE 5: TwoColumn Layout
    // =========================================================================
    println!("📐 Slide 5: TwoColumn Layout");
    slides.push(
        SlideContent::new("Two Column Comparison")
            .layout(SlideLayout::TwoColumn)
            .title_color("1F497D")
            .add_bullet("Left Column Item 1")
            .add_bullet("Left Column Item 2")
            .add_bullet("Left Column Item 3")
            .add_bullet("Right Column Item 1")
            .add_bullet("Right Column Item 2")
            .add_bullet("Right Column Item 3")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 6: Blank Layout
    // =========================================================================
    println!("📐 Slide 6: Blank Layout");
    slides.push(
        SlideContent::new("")
            .layout(SlideLayout::Blank)
    );

    // =========================================================================
    // SLIDE 7: Table with All Cell Styling Options
    // =========================================================================
    println!("📊 Slide 7: Table with Cell Styling");
    let styled_table = TableBuilder::new(vec![1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Header 1").bold().background_color("1F497D"),
            TableCell::new("Header 2").bold().background_color("4F81BD"),
            TableCell::new("Header 3").bold().background_color("8064A2"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Bold Cell").bold(),
            TableCell::new("Normal Cell"),
            TableCell::new("Colored").background_color("9BBB59"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Red BG").background_color("C0504D"),
            TableCell::new("Green BG").background_color("9BBB59"),
            TableCell::new("Blue BG").background_color("4F81BD"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Row 3 Col 1"),
            TableCell::new("Row 3 Col 2"),
            TableCell::new("Row 3 Col 3").bold().background_color("F79646"),
        ]))
        .position(500000, 1800000)
        .build();
    
    slides.push(
        SlideContent::new("Table with Cell Styling")
            .table(styled_table)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 8: Charts (Bar, Line, Pie)
    // =========================================================================
    println!("📈 Slide 8: Chart Types");
    
    // Create chart data structures (for demonstration)
    let _bar_chart = ChartBuilder::new("Sales by Region", ChartType::Bar)
        .categories(vec!["North", "South", "East", "West"])
        .add_series(ChartSeries::new("2023", vec![100.0, 80.0, 120.0, 90.0]))
        .add_series(ChartSeries::new("2024", vec![120.0, 95.0, 140.0, 110.0]))
        .build();
    
    let _line_chart = ChartBuilder::new("Monthly Trend", ChartType::Line)
        .categories(vec!["Jan", "Feb", "Mar", "Apr", "May", "Jun"])
        .add_series(ChartSeries::new("Revenue", vec![10.0, 12.0, 15.0, 14.0, 18.0, 22.0]))
        .build();
    
    let _pie_chart = ChartBuilder::new("Market Share", ChartType::Pie)
        .categories(vec!["Product A", "Product B", "Product C", "Others"])
        .add_series(ChartSeries::new("Share", vec![40.0, 30.0, 20.0, 10.0]))
        .build();
    
    slides.push(
        SlideContent::new("Chart Types: Bar, Line, Pie")
            .with_chart()
            .title_color("1F497D")
            .add_bullet("Bar Chart: Compare categories")
            .add_bullet("Line Chart: Show trends over time")
            .add_bullet("Pie Chart: Show proportions")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 9: Shapes with Different Fills
    // =========================================================================
    println!("🔷 Slide 9: Shapes with Fills");
    
    let rect = Shape::new(ShapeType::Rectangle, 500000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("4F81BD"))
        .with_text("Rectangle");
    
    let ellipse = Shape::new(ShapeType::Ellipse, 3000000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("9BBB59"))
        .with_text("Ellipse");
    
    let rounded = Shape::new(ShapeType::RoundedRectangle, 5500000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("C0504D"))
        .with_text("Rounded");
    
    let triangle = Shape::new(ShapeType::Triangle, 1500000, 3000000, 1500000, 1200000)
        .with_fill(ShapeFill::new("8064A2"))
        .with_text("Triangle");
    
    let diamond = Shape::new(ShapeType::Diamond, 4000000, 3000000, 1500000, 1200000)
        .with_fill(ShapeFill::new("F79646"))
        .with_text("Diamond");
    
    slides.push(
        SlideContent::new("Shape Types with Color Fills")
            .add_shape(rect)
            .add_shape(ellipse)
            .add_shape(rounded)
            .add_shape(triangle)
            .add_shape(diamond)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 10: Gradient Fills (NEW)
    // =========================================================================
    println!("🌈 Slide 10: Gradient Fills");
    
    // Horizontal gradient
    let gradient_h = Shape::new(ShapeType::Rectangle, 500000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("1565C0", "42A5F5", GradientDirection::Horizontal))
        .with_text("Horizontal");
    
    // Vertical gradient
    let gradient_v = Shape::new(ShapeType::Rectangle, 3200000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("2E7D32", "81C784", GradientDirection::Vertical))
        .with_text("Vertical");
    
    // Diagonal gradient
    let gradient_d = Shape::new(ShapeType::RoundedRectangle, 5900000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("C62828", "EF9A9A", GradientDirection::DiagonalDown))
        .with_text("Diagonal");
    
    // Three-color gradient
    let gradient_3 = Shape::new(ShapeType::Ellipse, 1800000, 3200000, 2500000, 1200000)
        .with_gradient(GradientFill::three_color("FF6F00", "FFC107", "FFEB3B", GradientDirection::Horizontal))
        .with_text("3-Color");
    
    // Custom angle gradient
    let gradient_angle = Shape::new(ShapeType::RoundedRectangle, 4800000, 3200000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("7B1FA2", "E1BEE7", GradientDirection::Angle(135)))
        .with_text("135° Angle");
    
    slides.push(
        SlideContent::new("Gradient Fills - Multiple Directions")
            .add_shape(gradient_h)
            .add_shape(gradient_v)
            .add_shape(gradient_d)
            .add_shape(gradient_3)
            .add_shape(gradient_angle)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 11: Transparency (NEW)
    // =========================================================================
    println!("👻 Slide 11: Transparency Effects");
    
    // Base shape (fully opaque)
    let base = Shape::new(ShapeType::Rectangle, 1000000, 1800000, 3000000, 2000000)
        .with_fill(ShapeFill::new("1565C0"))
        .with_text("Base (100%)");
    
    // 25% transparent overlay
    let trans_25 = Shape::new(ShapeType::Rectangle, 2000000, 2200000, 2500000, 1500000)
        .with_fill(ShapeFill::new("F44336").with_transparency(25))
        .with_line(ShapeLine::new("B71C1C", 25400))
        .with_text("25% Transparent");
    
    // 50% transparent overlay
    let trans_50 = Shape::new(ShapeType::Ellipse, 4500000, 1800000, 2500000, 2000000)
        .with_fill(ShapeFill::new("4CAF50").with_transparency(50))
        .with_line(ShapeLine::new("1B5E20", 25400))
        .with_text("50% Transparent");
    
    // 75% transparent overlay
    let trans_75 = Shape::new(ShapeType::RoundedRectangle, 5500000, 2500000, 2500000, 1500000)
        .with_fill(ShapeFill::new("FF9800").with_transparency(75))
        .with_line(ShapeLine::new("E65100", 25400))
        .with_text("75% Transparent");
    
    slides.push(
        SlideContent::new("Transparency Effects - Overlapping Shapes")
            .add_shape(base)
            .add_shape(trans_25)
            .add_shape(trans_50)
            .add_shape(trans_75)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 12: Styled Connectors (NEW)
    // =========================================================================
    println!("🔗 Slide 12: Styled Connectors");
    
    // Create shapes to connect
    let box1 = Shape::new(ShapeType::RoundedRectangle, 500000, 1800000, 1800000, 800000)
        .with_id(100)
        .with_fill(ShapeFill::new("1565C0"))
        .with_text("Start");
    
    let box2 = Shape::new(ShapeType::RoundedRectangle, 3500000, 1800000, 1800000, 800000)
        .with_id(101)
        .with_fill(ShapeFill::new("2E7D32"))
        .with_text("Process");
    
    let box3 = Shape::new(ShapeType::RoundedRectangle, 6500000, 1800000, 1800000, 800000)
        .with_id(102)
        .with_fill(ShapeFill::new("C62828"))
        .with_text("End");
    
    // Straight connector with arrow
    let conn1 = Connector::straight(2300000, 2200000, 3500000, 2200000)
        .with_line(ConnectorLine::new("1565C0", 25400))
        .with_end_arrow(ArrowType::Triangle)
        .with_arrow_size(ArrowSize::Large);
    
    // Elbow connector with stealth arrow
    let conn2 = Connector::elbow(5300000, 2200000, 6500000, 2200000)
        .with_line(ConnectorLine::new("2E7D32", 38100).with_dash(LineDash::Dash))
        .with_end_arrow(ArrowType::Stealth)
        .with_arrow_size(ArrowSize::Medium);
    
    // Curved connector examples
    let box4 = Shape::new(ShapeType::Ellipse, 1000000, 3200000, 1500000, 800000)
        .with_id(103)
        .with_fill(ShapeFill::new("7B1FA2"))
        .with_text("A");
    
    let box5 = Shape::new(ShapeType::Ellipse, 4000000, 3200000, 1500000, 800000)
        .with_id(104)
        .with_fill(ShapeFill::new("00838F"))
        .with_text("B");
    
    let box6 = Shape::new(ShapeType::Ellipse, 7000000, 3200000, 1500000, 800000)
        .with_id(105)
        .with_fill(ShapeFill::new("EF6C00"))
        .with_text("C");
    
    // Curved connector with diamond arrow
    let conn3 = Connector::curved(2500000, 3600000, 4000000, 3600000)
        .with_line(ConnectorLine::new("7B1FA2", 19050).with_dash(LineDash::DashDot))
        .with_arrows(ArrowType::Oval, ArrowType::Diamond);
    
    // Dotted connector
    let conn4 = Connector::straight(5500000, 3600000, 7000000, 3600000)
        .with_line(ConnectorLine::new("00838F", 12700).with_dash(LineDash::Dot))
        .with_end_arrow(ArrowType::Open);
    
    slides.push(
        SlideContent::new("Styled Connectors - Types, Arrows, Dashes")
            .add_shape(box1)
            .add_shape(box2)
            .add_shape(box3)
            .add_shape(box4)
            .add_shape(box5)
            .add_shape(box6)
            .add_connector(conn1)
            .add_connector(conn2)
            .add_connector(conn3)
            .add_connector(conn4)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 13: Images
    // =========================================================================
    println!("🖼️  Slide 13: Image Placeholders");
    
    let img1 = Image::new("logo.png", 2500000, 1800000, "png")
        .position(500000, 1600000);
    let img2 = Image::new("photo.jpg", 2500000, 1800000, "jpg")
        .position(3500000, 1600000);
    let img3 = Image::new("diagram.png", 2000000, 1800000, "png")
        .position(6500000, 1600000);
    
    slides.push(
        SlideContent::new("Image Placeholders")
            .add_image(img1)
            .add_image(img2)
            .add_image(img3)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 11: Advanced Table with Borders & Alignment (NEW)
    // =========================================================================
    println!("📊 Slide 11: Advanced Table (borders, alignment, merged cells)");
    
    // Build advanced table using generator's TableBuilder with alignment
    let advanced_table = TableBuilder::new(vec![2000000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2024 Financial Report").bold().background_color("1F4E79").text_color("FFFFFF").align_center().font_size(14),
            TableCell::new("").background_color("1F4E79"),
            TableCell::new("").background_color("1F4E79"),
            TableCell::new("").background_color("1F4E79"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Category").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Revenue").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Expenses").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Profit").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Product Sales").text_color("000000").align_left(),
            TableCell::new("$1,250,000").text_color("2E7D32").align_right(),
            TableCell::new("$450,000").text_color("C62828").align_right(),
            TableCell::new("$800,000").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Services").text_color("000000").align_left(),
            TableCell::new("$890,000").text_color("2E7D32").align_right(),
            TableCell::new("$320,000").text_color("C62828").align_right(),
            TableCell::new("$570,000").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Total").bold().background_color("E7E6E6").text_color("000000").align_left(),
            TableCell::new("$2,140,000").bold().background_color("E7E6E6").text_color("000000").align_right(),
            TableCell::new("$770,000").bold().background_color("E7E6E6").text_color("000000").align_right(),
            TableCell::new("$1,370,000").bold().background_color("C6EFCE").text_color("006100").align_right(),
        ]))
        .position(300000, 1600000)
        .build();
    
    slides.push(
        SlideContent::new("Financial Report - Advanced Table")
            .table(advanced_table)
            .title_color("1F4E79")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 12: Comparison Matrix Table (NEW)
    // =========================================================================
    println!("📊 Slide 12: Comparison Matrix Table");
    
    let comparison_table = TableBuilder::new(vec![2000000, 1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Feature").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Basic").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Pro").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Enterprise").bold().background_color("4472C4").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Storage").text_color("000000"),
            TableCell::new("5 GB").text_color("000000"),
            TableCell::new("50 GB").text_color("000000"),
            TableCell::new("Unlimited").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Users").text_color("000000"),
            TableCell::new("1").text_color("000000"),
            TableCell::new("10").text_color("000000"),
            TableCell::new("Unlimited").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Support").text_color("000000"),
            TableCell::new("Email").text_color("000000"),
            TableCell::new("24/7 Chat").text_color("000000"),
            TableCell::new("Dedicated").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("API Access").text_color("000000"),
            TableCell::new("No").text_color("C62828"),
            TableCell::new("Yes").text_color("2E7D32"),
            TableCell::new("Yes + Priority").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Price/month").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$9").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$29").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$99").bold().background_color("F2F2F2").text_color("000000"),
        ]))
        .position(500000, 1600000)
        .build();
    
    slides.push(
        SlideContent::new("Pricing Comparison Matrix")
            .table(comparison_table)
            .title_color("4472C4")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 13: Process Flow with Shapes (NEW - SmartArt-like)
    // =========================================================================
    println!("🔷 Slide 13: Process Flow (SmartArt-style)");
    
    // Create process flow using shapes
    let step1 = Shape::new(ShapeType::RoundedRectangle, 300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("1. Research");
    let arrow1 = Shape::new(ShapeType::RightArrow, 1800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step2 = Shape::new(ShapeType::RoundedRectangle, 2300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("2. Design");
    let arrow2 = Shape::new(ShapeType::RightArrow, 3800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step3 = Shape::new(ShapeType::RoundedRectangle, 4300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("3. Develop");
    let arrow3 = Shape::new(ShapeType::RightArrow, 5800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step4 = Shape::new(ShapeType::RoundedRectangle, 6300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("5B9BD5"))
        .with_text("4. Deploy");
    
    slides.push(
        SlideContent::new("Development Process Flow")
            .add_shape(step1)
            .add_shape(arrow1)
            .add_shape(step2)
            .add_shape(arrow2)
            .add_shape(step3)
            .add_shape(arrow3)
            .add_shape(step4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 14: Organization Chart with Shapes (NEW)
    // =========================================================================
    println!("🔷 Slide 14: Organization Chart");
    
    // CEO at top
    let ceo = Shape::new(ShapeType::RoundedRectangle, 3500000, 1400000, 2000000, 600000)
        .with_fill(ShapeFill::new("1F4E79"))
        .with_text("CEO");
    
    // Vertical line from CEO
    let line1 = Shape::new(ShapeType::Rectangle, 4450000, 2000000, 100000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // Horizontal connector
    let hline = Shape::new(ShapeType::Rectangle, 1950000, 2400000, 5100000, 50000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // CTO, CFO, COO
    let cto = Shape::new(ShapeType::RoundedRectangle, 1000000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("CTO");
    let cfo = Shape::new(ShapeType::RoundedRectangle, 3600000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("CFO");
    let coo = Shape::new(ShapeType::RoundedRectangle, 6200000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("COO");
    
    // Vertical lines to departments
    let vline1 = Shape::new(ShapeType::Rectangle, 1850000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let vline2 = Shape::new(ShapeType::Rectangle, 4450000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let vline3 = Shape::new(ShapeType::Rectangle, 7050000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // Teams under CTO
    let eng = Shape::new(ShapeType::Rectangle, 500000, 3300000, 1200000, 400000)
        .with_fill(ShapeFill::new("BDD7EE"))
        .with_text("Engineering");
    let product = Shape::new(ShapeType::Rectangle, 1800000, 3300000, 1200000, 400000)
        .with_fill(ShapeFill::new("BDD7EE"))
        .with_text("Product");
    
    slides.push(
        SlideContent::new("Organization Structure")
            .add_shape(ceo)
            .add_shape(line1)
            .add_shape(hline)
            .add_shape(cto)
            .add_shape(cfo)
            .add_shape(coo)
            .add_shape(vline1)
            .add_shape(vline2)
            .add_shape(vline3)
            .add_shape(eng)
            .add_shape(product)
            .title_color("1F4E79")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 15: PDCA Cycle Diagram (NEW)
    // =========================================================================
    println!("🔷 Slide 15: PDCA Cycle Diagram");
    
    // Four quadrants for PDCA
    let plan = Shape::new(ShapeType::RoundedRectangle, 1500000, 1600000, 2500000, 1500000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("PLAN\n\nDefine goals\nand strategy");
    let do_box = Shape::new(ShapeType::RoundedRectangle, 4500000, 1600000, 2500000, 1500000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("DO\n\nImplement\nthe plan");
    let check = Shape::new(ShapeType::RoundedRectangle, 4500000, 3300000, 2500000, 1500000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("CHECK\n\nMeasure\nresults");
    let act = Shape::new(ShapeType::RoundedRectangle, 1500000, 3300000, 2500000, 1500000)
        .with_fill(ShapeFill::new("FFC000"))
        .with_text("ACT\n\nAdjust and\nimprove");
    
    // Arrows between quadrants
    let arr1 = Shape::new(ShapeType::RightArrow, 4100000, 2100000, 300000, 300000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr2 = Shape::new(ShapeType::DownArrow, 5600000, 3200000, 300000, 200000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr3 = Shape::new(ShapeType::LeftArrow, 4100000, 3800000, 300000, 300000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr4 = Shape::new(ShapeType::UpArrow, 2600000, 3200000, 300000, 200000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    slides.push(
        SlideContent::new("PDCA Continuous Improvement Cycle")
            .add_shape(plan)
            .add_shape(do_box)
            .add_shape(check)
            .add_shape(act)
            .add_shape(arr1)
            .add_shape(arr2)
            .add_shape(arr3)
            .add_shape(arr4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 16: Pyramid Diagram (Maslow's Hierarchy) (NEW)
    // =========================================================================
    println!("🔷 Slide 16: Pyramid Diagram");
    
    // Build pyramid from bottom to top
    let level5 = Shape::new(ShapeType::Trapezoid, 500000, 4000000, 8000000, 600000)
        .with_fill(ShapeFill::new("C00000"))
        .with_text("Physiological Needs - Food, Water, Shelter");
    let level4 = Shape::new(ShapeType::Trapezoid, 1000000, 3400000, 7000000, 600000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Safety Needs - Security, Stability");
    let level3 = Shape::new(ShapeType::Trapezoid, 1500000, 2800000, 6000000, 600000)
        .with_fill(ShapeFill::new("FFC000"))
        .with_text("Love & Belonging - Relationships");
    let level2 = Shape::new(ShapeType::Trapezoid, 2000000, 2200000, 5000000, 600000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Esteem - Achievement, Respect");
    let level1 = Shape::new(ShapeType::Triangle, 2500000, 1500000, 4000000, 700000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Self-Actualization");
    
    slides.push(
        SlideContent::new("Maslow's Hierarchy of Needs")
            .add_shape(level5)
            .add_shape(level4)
            .add_shape(level3)
            .add_shape(level2)
            .add_shape(level1)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 17: Venn Diagram (NEW)
    // =========================================================================
    println!("🔷 Slide 17: Venn Diagram");
    
    // Three overlapping circles
    let circle1 = Shape::new(ShapeType::Ellipse, 1500000, 1800000, 3000000, 3000000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Skills");
    let circle2 = Shape::new(ShapeType::Ellipse, 3500000, 1800000, 3000000, 3000000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Passion");
    let circle3 = Shape::new(ShapeType::Ellipse, 2500000, 3200000, 3000000, 3000000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Market Need");
    
    // Center label
    let center = Shape::new(ShapeType::Ellipse, 3200000, 2800000, 1600000, 800000)
        .with_fill(ShapeFill::new("FFFFFF"))
        .with_text("IKIGAI");
    
    slides.push(
        SlideContent::new("Finding Your Ikigai - Venn Diagram")
            .add_shape(circle1)
            .add_shape(circle2)
            .add_shape(circle3)
            .add_shape(center)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 18: Timeline/Roadmap (NEW)
    // =========================================================================
    println!("📊 Slide 18: Project Timeline");
    
    let timeline_table = TableBuilder::new(vec![1500000, 1500000, 1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q2 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q3 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q4 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q1 2025").bold().background_color("4472C4").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Research\n& Planning").background_color("BDD7EE").text_color("1F497D"),
            TableCell::new("Design\nPhase").background_color("BDD7EE").text_color("1F497D"),
            TableCell::new("Development\nSprint 1-3").background_color("C6EFCE").text_color("006100"),
            TableCell::new("Testing\n& QA").background_color("FCE4D6").text_color("C65911"),
            TableCell::new("Launch\n& Support").background_color("E2EFDA").text_color("375623"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("✓ Complete").bold().text_color("2E7D32"),
            TableCell::new("✓ Complete").bold().text_color("2E7D32"),
            TableCell::new("In Progress").text_color("ED7D31"),
            TableCell::new("Planned").text_color("7F7F7F"),
            TableCell::new("Planned").text_color("7F7F7F"),
        ]))
        .position(300000, 2000000)
        .build();
    
    slides.push(
        SlideContent::new("Project Roadmap 2024-2025")
            .table(timeline_table)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 19: Dashboard Summary (NEW)
    // =========================================================================
    println!("🔷 Slide 19: Dashboard with KPIs");
    
    // KPI boxes
    let kpi1 = Shape::new(ShapeType::RoundedRectangle, 300000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Revenue\n\n$2.14M\n+15% YoY");
    let kpi2 = Shape::new(ShapeType::RoundedRectangle, 2500000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Customers\n\n12,450\n+22% YoY");
    let kpi3 = Shape::new(ShapeType::RoundedRectangle, 4700000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("NPS Score\n\n72\n+8 pts");
    let kpi4 = Shape::new(ShapeType::RoundedRectangle, 6900000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("5B9BD5"))
        .with_text("Retention\n\n94%\n+3% YoY");
    
    // Status indicators
    let status1 = Shape::new(ShapeType::Ellipse, 1800000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    let status2 = Shape::new(ShapeType::Ellipse, 4000000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    let status3 = Shape::new(ShapeType::Ellipse, 6200000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("FFC000"));
    let status4 = Shape::new(ShapeType::Ellipse, 8400000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    
    slides.push(
        SlideContent::new("Executive Dashboard - Q1 2024")
            .add_shape(kpi1)
            .add_shape(kpi2)
            .add_shape(kpi3)
            .add_shape(kpi4)
            .add_shape(status1)
            .add_shape(status2)
            .add_shape(status3)
            .add_shape(status4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 20: Summary Slide (NEW)
    // =========================================================================
    println!("📝 Slide 20: Summary with Speaker Notes");
    
    slides.push(
        SlideContent::new("Summary & Next Steps")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Completed: Research, Design, Initial Development")
            .add_bullet("In Progress: Sprint 3 Development")
            .add_bullet("Next: QA Testing Phase (Q4 2024)")
            .add_bullet("Launch Target: Q1 2025")
            .add_bullet("Key Risks: Resource constraints, Timeline pressure")
            .content_size(24)
            .notes("Speaker Notes:\n\n1. Emphasize the progress made\n2. Highlight key achievements\n3. Address any concerns about timeline\n4. Open for Q&A")
    );

    // =========================================================================
    // SLIDE 21: Bullet Styles (NEW v0.2.1)
    // =========================================================================
    println!("🔢 Slide 21: Bullet Styles (NEW)");
    
    // Numbered list
    slides.push(
        SlideContent::new("Bullet Styles - Numbered List")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .with_bullet_style(BulletStyle::Number)
            .add_bullet("First numbered item")
            .add_bullet("Second numbered item")
            .add_bullet("Third numbered item")
            .add_bullet("Fourth numbered item")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 22: Lettered Lists (NEW v0.2.1)
    // =========================================================================
    println!("🔤 Slide 22: Lettered Lists (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Lettered Lists")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_lettered("Option A - First choice")
            .add_lettered("Option B - Second choice")
            .add_lettered("Option C - Third choice")
            .add_lettered("Option D - Fourth choice")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 23: Roman Numerals (NEW v0.2.1)
    // =========================================================================
    println!("🏛️ Slide 23: Roman Numerals (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Roman Numerals")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .with_bullet_style(BulletStyle::RomanUpper)
            .add_bullet("Chapter I - Introduction")
            .add_bullet("Chapter II - Background")
            .add_bullet("Chapter III - Methodology")
            .add_bullet("Chapter IV - Results")
            .add_bullet("Chapter V - Conclusion")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 24: Custom Bullets (NEW v0.2.1)
    // =========================================================================
    println!("⭐ Slide 24: Custom Bullets (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Custom Characters")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_styled_bullet("Star bullet point", BulletStyle::Custom('★'))
            .add_styled_bullet("Arrow bullet point", BulletStyle::Custom('→'))
            .add_styled_bullet("Check bullet point", BulletStyle::Custom('✓'))
            .add_styled_bullet("Diamond bullet point", BulletStyle::Custom('◆'))
            .add_styled_bullet("Heart bullet point", BulletStyle::Custom('♥'))
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 25: Sub-bullets / Hierarchy (NEW v0.2.1)
    // =========================================================================
    println!("📊 Slide 25: Sub-bullets Hierarchy (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Hierarchical Lists")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Main Topic 1")
            .add_sub_bullet("Supporting detail A")
            .add_sub_bullet("Supporting detail B")
            .add_bullet("Main Topic 2")
            .add_sub_bullet("Supporting detail C")
            .add_sub_bullet("Supporting detail D")
            .add_bullet("Main Topic 3")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 26: Text Enhancements (NEW v0.2.1)
    // =========================================================================
    println!("✏️ Slide 26: Text Enhancements (NEW)");
    
    // Use BulletPoint with formatting
    let strikethrough_bullet = BulletPoint::new("Strikethrough: This text is crossed out").strikethrough();
    let highlight_bullet = BulletPoint::new("Highlight: Yellow background for emphasis").highlight("FFFF00");
    let subscript_bullet = BulletPoint::new("Subscript: H₂O - for chemical formulas").subscript();
    let superscript_bullet = BulletPoint::new("Superscript: x² - for math expressions").superscript();
    let bold_colored = BulletPoint::new("Combined: Bold + Red color").bold().color("FF0000");
    
    let mut text_enhancements_slide = SlideContent::new("Text Enhancements - New Formatting")
        .layout(SlideLayout::TitleAndContent)
        .title_color("1F497D")
        .title_bold(true)
        .content_size(24);
    text_enhancements_slide.bullets.push(strikethrough_bullet);
    text_enhancements_slide.bullets.push(highlight_bullet);
    text_enhancements_slide.bullets.push(subscript_bullet);
    text_enhancements_slide.bullets.push(superscript_bullet);
    text_enhancements_slide.bullets.push(bold_colored);
    
    slides.push(text_enhancements_slide);

    // =========================================================================
    // SLIDE 27: Font Size Presets (NEW v0.2.1)
    // =========================================================================
    println!("🔤 Slide 27: Font Size Presets (NEW)");
    
    // Demonstrate different font sizes per bullet
    let large_bullet = BulletPoint::new(&format!("LARGE: {}pt - Extra large text", font_sizes::LARGE)).font_size(font_sizes::LARGE);
    let heading_bullet = BulletPoint::new(&format!("HEADING: {}pt - Section headers", font_sizes::HEADING)).font_size(font_sizes::HEADING);
    let body_bullet = BulletPoint::new(&format!("BODY: {}pt - Regular content", font_sizes::BODY)).font_size(font_sizes::BODY);
    let small_bullet = BulletPoint::new(&format!("SMALL: {}pt - Smaller text", font_sizes::SMALL)).font_size(font_sizes::SMALL);
    let caption_bullet = BulletPoint::new(&format!("CAPTION: {}pt - Captions and notes", font_sizes::CAPTION)).font_size(font_sizes::CAPTION);
    
    let mut font_size_slide = SlideContent::new("Font Size Presets - Each line different size")
        .layout(SlideLayout::TitleAndContent)
        .title_color("1F497D")
        .title_bold(true)
        .title_size(font_sizes::TITLE);
    font_size_slide.bullets.push(large_bullet);
    font_size_slide.bullets.push(heading_bullet);
    font_size_slide.bullets.push(body_bullet);
    font_size_slide.bullets.push(small_bullet);
    font_size_slide.bullets.push(caption_bullet);
    
    slides.push(font_size_slide);

    // =========================================================================
    // SLIDE 28: Theme Colors (NEW v0.2.1)
    // =========================================================================
    println!("🎨 Slide 28: Theme Colors (NEW)");
    
    // Create shapes with theme colors
    let corporate_shape = Shape::new(ShapeType::Rectangle, 500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::CORPORATE.primary))
        .with_text("Corporate");
    
    let modern_shape = Shape::new(ShapeType::Rectangle, 2500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::MODERN.primary))
        .with_text("Modern");
    
    let vibrant_shape = Shape::new(ShapeType::Rectangle, 4500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::VIBRANT.primary))
        .with_text("Vibrant");
    
    let dark_shape = Shape::new(ShapeType::Rectangle, 6500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::DARK.primary))
        .with_text("Dark");
    
    let nature_shape = Shape::new(ShapeType::Rectangle, 500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::NATURE.primary))
        .with_text("Nature");
    
    let tech_shape = Shape::new(ShapeType::Rectangle, 2500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::TECH.primary))
        .with_text("Tech");
    
    let carbon_shape = Shape::new(ShapeType::Rectangle, 4500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::CARBON.primary))
        .with_text("Carbon");
    
    slides.push(
        SlideContent::new("Theme Color Palettes")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_shape(corporate_shape)
            .add_shape(modern_shape)
            .add_shape(vibrant_shape)
            .add_shape(dark_shape)
            .add_shape(nature_shape)
            .add_shape(tech_shape)
            .add_shape(carbon_shape)
    );

    // =========================================================================
    // SLIDE 29: Material & Carbon Design Colors (NEW v0.2.1)
    // =========================================================================
    println!("🌈 Slide 29: Material & Carbon Colors (NEW)");
    
    // Material Design colors
    let material_red = Shape::new(ShapeType::Rectangle, 500000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_RED))
        .with_text("M-Red");
    
    let material_blue = Shape::new(ShapeType::Rectangle, 1900000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_BLUE))
        .with_text("M-Blue");
    
    let material_green = Shape::new(ShapeType::Rectangle, 3300000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_GREEN))
        .with_text("M-Green");
    
    let material_orange = Shape::new(ShapeType::Rectangle, 4700000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_ORANGE))
        .with_text("M-Orange");
    
    let material_purple = Shape::new(ShapeType::Rectangle, 6100000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_PURPLE))
        .with_text("M-Purple");
    
    // Carbon Design colors
    let carbon_blue = Shape::new(ShapeType::Rectangle, 500000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_BLUE_60))
        .with_text("C-Blue");
    
    let carbon_green = Shape::new(ShapeType::Rectangle, 1900000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_GREEN_50))
        .with_text("C-Green");
    
    let carbon_red = Shape::new(ShapeType::Rectangle, 3300000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_RED_60))
        .with_text("C-Red");
    
    let carbon_purple = Shape::new(ShapeType::Rectangle, 4700000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_PURPLE_60))
        .with_text("C-Purple");
    
    let carbon_gray = Shape::new(ShapeType::Rectangle, 6100000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_GRAY_100))
        .with_text("C-Gray");
    
    slides.push(
        SlideContent::new("Material & Carbon Design Colors")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_shape(material_red)
            .add_shape(material_blue)
            .add_shape(material_green)
            .add_shape(material_orange)
            .add_shape(material_purple)
            .add_shape(carbon_blue)
            .add_shape(carbon_green)
            .add_shape(carbon_red)
            .add_shape(carbon_purple)
            .add_shape(carbon_gray)
    );

    // =========================================================================
    // SLIDE 30: Image from Base64 (NEW v0.2.1)
    // =========================================================================
    println!("🖼️ Slide 30: Image from Base64 (NEW)");
    
    // 1x1 red PNG pixel in base64
    let _red_pixel_base64 = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8DwHwAFBQIAX8jx0gAAAABJRU5ErkJggg==";
    
    // Create image from base64 (demonstrating the API)
    let _base64_image = ImageBuilder::from_base64(_red_pixel_base64, 914400, 914400, "PNG")
        .position(4000000, 2500000)
        .build();
    
    slides.push(
        SlideContent::new("Image Loading - New Methods")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Image::new(path) - Load from file path")
            .add_bullet("Image::from_base64(data) - Load from base64 string")
            .add_bullet("Image::from_bytes(data) - Load from raw bytes")
            .add_bullet("ImageBuilder for fluent API configuration")
            .add_bullet("Built-in base64 decoder (no external deps)")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 31: Feature Summary (NEW v0.2.1)
    // =========================================================================
    println!("📋 Slide 31: v0.2.1 Feature Summary (NEW)");
    
    slides.push(
        SlideContent::new("New Features in v0.2.1")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_numbered("BulletStyle: Number, Letter, Roman, Custom")
            .add_numbered("TextFormat: Strikethrough, Highlight")
            .add_numbered("TextFormat: Subscript, Superscript")
            .add_numbered("Font size presets in prelude")
            .add_numbered("Image::from_base64 and from_bytes")
            .add_numbered("Theme color palettes (7 themes)")
            .add_numbered("Material & Carbon Design colors")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 32: Slide Show Settings - Comparison Table (REAL: embedded in presProps.xml)
    // =========================================================================
    println!("🎬 Slide 34: Slide Show Settings (Visual)");

    let show_speaker = SlideShowSettings::new().pen_color(PenColor::red());
    let show_kiosk = SlideShowSettings::kiosk();
    let _show_range = SlideShowSettings::new()
        .show_type(ShowType::Browsed)
        .slide_range(SlideRange::Range { start: 1, end: 10 })
        .without_animation(true);
    let _speaker_xml = show_speaker.to_xml();
    let _kiosk_xml = show_kiosk.to_xml();

    let show_table = TableBuilder::new(vec![2000000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Setting").bold().background_color("1F4E79").text_color("FFFFFF"),
            TableCell::new("Speaker").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Kiosk").bold().background_color("ED7D31").text_color("FFFFFF"),
            TableCell::new("Browsed").bold().background_color("70AD47").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Loop").bold().background_color("D6E4F0"),
            TableCell::new("No"), TableCell::new("Yes").bold().text_color("2E7D32"),
            TableCell::new("No"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Narration").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("No").text_color("C62828"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Animation").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("Yes"),
            TableCell::new("No").text_color("C62828"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Timings").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("Auto"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Slide Range").bold().background_color("D6E4F0"),
            TableCell::new("All"), TableCell::new("All"),
            TableCell::new("1-10"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Pen Color").bold().background_color("D6E4F0"),
            TableCell::new("Red").text_color("FF0000"),
            TableCell::new("Red").text_color("FF0000"),
            TableCell::new("Red").text_color("FF0000"),
        ]))
        .position(300000, 1600000)
        .build();

    // Mode icons
    let icon_speaker = Shape::new(ShapeType::RoundedRectangle, 300000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Speaker: Full control");
    let icon_kiosk = Shape::new(ShapeType::RoundedRectangle, 3100000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Kiosk: Auto-loop");
    let icon_browsed = Shape::new(ShapeType::RoundedRectangle, 5900000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Browsed: Scrollbar");

    slides.push(
        SlideContent::new("Slide Show Settings - Mode Comparison")
            .table(show_table)
            .add_shape(icon_speaker)
            .add_shape(icon_kiosk)
            .add_shape(icon_browsed)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 35: Print Settings - Visual Handout Grid
    // =========================================================================
    println!("🖨️  Slide 35: Print Settings & Handouts (Visual)");

    let print = PrintSettings::new()
        .print_what(PrintWhat::Handouts)
        .color_mode(PrintColorMode::Grayscale)
        .handout_layout(GenHandoutLayout::SlidesPerPage6)
        .frame_slides(true)
        .header("Q1 2025 Strategy Review")
        .footer("Confidential - Internal Use Only")
        .print_date(true)
        .print_page_numbers(true);
    let _prnpr_xml = print.to_prnpr_xml();
    let _handout_xml = print.to_handout_master_xml();

    // Visual: 6-slide handout grid (2 cols x 3 rows)
    let hdr = Shape::new(ShapeType::Rectangle, 300000, 1500000, 4200000, 300000)
        .with_fill(ShapeFill::new("E7E6E6"))
        .with_text("Q1 2025 Strategy Review");
    // Row 1
    let s1 = Shape::new(ShapeType::Rectangle, 400000, 2000000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 1");
    let s2 = Shape::new(ShapeType::Rectangle, 2500000, 2000000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 2");
    // Row 2
    let s3 = Shape::new(ShapeType::Rectangle, 400000, 3200000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 3");
    let s4 = Shape::new(ShapeType::Rectangle, 2500000, 3200000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 4");
    // Row 3
    let s5 = Shape::new(ShapeType::Rectangle, 400000, 4400000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 5");
    let s6 = Shape::new(ShapeType::Rectangle, 2500000, 4400000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 6");
    let ftr = Shape::new(ShapeType::Rectangle, 300000, 5600000, 4200000, 300000)
        .with_fill(ShapeFill::new("E7E6E6"))
        .with_text("Confidential - Internal Use Only");

    // Settings summary table on the right
    let print_table = TableBuilder::new(vec![1800000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Print Settings").bold().background_color("1F4E79").text_color("FFFFFF"),
            TableCell::new("").background_color("1F4E79"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Print What").bold().background_color("D6E4F0"),
            TableCell::new("Handouts"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Color Mode").bold().background_color("D6E4F0"),
            TableCell::new("Grayscale"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Layout").bold().background_color("D6E4F0"),
            TableCell::new("6 slides/page"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Frame Slides").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Date").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Page Numbers").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .position(5000000, 1800000)
        .build();

    slides.push(
        SlideContent::new("Print Handout - 6 Slides Per Page")
            .table(print_table)
            .add_shape(hdr)
            .add_shape(s1).add_shape(s2)
            .add_shape(s3).add_shape(s4)
            .add_shape(s5).add_shape(s6)
            .add_shape(ftr)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 36: Advanced Table Merging - Actual Merged Table
    // =========================================================================
    println!("📊 Slide 36: Advanced Table Merging (Visual)");

    // Use TableMergeMap to compute states, then build a visual table
    let mut merge_map = TableMergeMap::new(5, 4);
    merge_map.merge_cells(0, 0, 1, 4).unwrap(); // Title row spans all 4 cols
    merge_map.merge_cells(1, 0, 2, 1).unwrap(); // "Products" spans 2 rows
    merge_map.merge_cells(3, 0, 2, 1).unwrap(); // "Services" spans 2 rows

    // Show merge state labels
    let state_00 = merge_map.cell_state(0, 0); // Anchor gridSpan=4
    let state_01 = merge_map.cell_state(0, 1); // HMerge
    let state_10 = merge_map.cell_state(1, 0); // Anchor rowSpan=2
    let state_20 = merge_map.cell_state(2, 0); // VMerge
    println!("   ├── (0,0): {}", state_00.to_xml_attrs().trim());
    println!("   ├── (0,1): {}", state_01.to_xml_attrs().trim());
    println!("   ├── (1,0): {}", state_10.to_xml_attrs().trim());
    println!("   └── (2,0): {}", state_20.to_xml_attrs().trim());

    // Build the table with REAL merge attributes (gridSpan, rowSpan, hMerge, vMerge)
    let merge_table = TableBuilder::new(vec![1500000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2025 Revenue Report").bold().background_color("1F4E79").text_color("FFFFFF").grid_span(4),
            TableCell::new("").background_color("1F4E79").h_merge(),
            TableCell::new("").background_color("1F4E79").h_merge(),
            TableCell::new("").background_color("1F4E79").h_merge(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Products").bold().background_color("BDD7EE").text_color("1F497D").row_span(2),
            TableCell::new("Hardware").background_color("E2EFDA"),
            TableCell::new("$450,000").text_color("2E7D32").align_right(),
            TableCell::new("+12%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("").background_color("BDD7EE").v_merge(),
            TableCell::new("Software").background_color("E2EFDA"),
            TableCell::new("$680,000").text_color("2E7D32").align_right(),
            TableCell::new("+25%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Services").bold().background_color("FCE4D6").text_color("C65911").row_span(2),
            TableCell::new("Consulting").background_color("FFF2CC"),
            TableCell::new("$320,000").text_color("2E7D32").align_right(),
            TableCell::new("+8%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("").background_color("FCE4D6").v_merge(),
            TableCell::new("Support").background_color("FFF2CC"),
            TableCell::new("$190,000").text_color("2E7D32").align_right(),
            TableCell::new("+5%").bold().text_color("2E7D32").align_right(),
        ]))
        .position(300000, 1600000)
        .build();

    // Legend shapes
    let legend_anchor = Shape::new(ShapeType::RoundedRectangle, 300000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Anchor (gridSpan/rowSpan)");
    let legend_hmerge = Shape::new(ShapeType::RoundedRectangle, 2500000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("hMerge (col covered)");
    let legend_vmerge = Shape::new(ShapeType::RoundedRectangle, 4700000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("vMerge (row covered)");
    let legend_normal = Shape::new(ShapeType::RoundedRectangle, 6900000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"))
        .with_text("Normal (no merge)");

    slides.push(
        SlideContent::new("Advanced Table Merging - Merged Cells")
            .table(merge_table)
            .add_shape(legend_anchor)
            .add_shape(legend_hmerge)
            .add_shape(legend_vmerge)
            .add_shape(legend_normal)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // Build PresentationSettings with all advanced features
    // =========================================================================
    println!("\n⚙️  Building Presentation Settings...");

    // Slide show settings (embedded in presProps.xml as <p:showPr>)
    let show_settings = SlideShowSettings::new()
        .show_type(ShowType::Speaker)
        .pen_color(PenColor::red())
        .use_timings(true);
    println!("   ├── Slide Show: Speaker mode, red pen, timings enabled");
    println!("   │   └── XML: {} bytes", show_settings.to_xml().len());

    // Print settings (embedded in presProps.xml as <p:prnPr>)
    let print_settings = PrintSettings::new()
        .print_what(PrintWhat::Handouts)
        .color_mode(PrintColorMode::Grayscale)
        .handout_layout(GenHandoutLayout::SlidesPerPage6)
        .frame_slides(true)
        .header("Q1 2025 Strategy Review")
        .footer("Confidential - Internal Use Only")
        .print_date(true)
        .print_page_numbers(true);
    println!("   └── Print: Handouts, 6/page, grayscale, framed");
    println!("       └── XML: {} bytes", print_settings.to_prnpr_xml().len());

    let pres_settings = PresentationSettings::new()
        .slide_show(show_settings)
        .print(print_settings);
    println!("   All settings configured → presProps.xml");

    // =========================================================================
    // Generate PPTX with real integrated features
    // =========================================================================
    println!("\n📦 Generating PPTX with integrated features...");
    let pptx_data = create_pptx_with_settings(
        "PPTX-RS Element Showcase",
        slides.clone(),
        Some(pres_settings),
    )?;
    fs::write("comprehensive_demo.pptx", &pptx_data)?;
    println!("   ✓ Created comprehensive_demo.pptx ({} slides, {} bytes)", 
             slides.len(), pptx_data.len());

    // =========================================================================
    // Package Analysis - Demonstrate Reading
    // =========================================================================
    println!("\n📖 Package Analysis (Read Capability):");
    
    let package = Package::open("comprehensive_demo.pptx")?;
    let paths = package.part_paths();
    
    let slide_count = paths.iter()
        .filter(|p| p.starts_with("ppt/slides/slide") && p.ends_with(".xml"))
        .count();
    
    println!("   ├── Total parts: {}", package.part_count());
    println!("   ├── Slides: {}", slide_count);
    println!("   └── Package opened and analyzed successfully");

    // =========================================================================
    // NEW: Parts API Demonstration
    // =========================================================================
    println!("\n🧩 Parts API Demonstration:");
    
    // SlideLayoutPart - 11 layout types
    println!("   ┌── SlideLayoutPart (11 layout types):");
    let layouts = [
        LayoutType::Title,
        LayoutType::TitleAndContent,
        LayoutType::SectionHeader,
        LayoutType::TwoContent,
        LayoutType::Comparison,
        LayoutType::TitleOnly,
        LayoutType::Blank,
        LayoutType::ContentWithCaption,
        LayoutType::PictureWithCaption,
        LayoutType::TitleAndVerticalText,
        LayoutType::VerticalTitleAndText,
    ];
    for (i, layout_type) in layouts.iter().enumerate() {
        let layout = SlideLayoutPart::new(i + 1, *layout_type);
        if i < 3 {
            println!("   │   ├── {}: {} ({})", i + 1, layout_type.name(), layout.path());
        }
    }
    println!("   │   └── ... and {} more layout types", layouts.len() - 3);
    
    // SlideMasterPart
    println!("   ├── SlideMasterPart:");
    let mut master = SlideMasterPart::new(1);
    master.set_name("Custom Master");
    master.add_layout_rel_id("rId2");
    master.add_layout_rel_id("rId3");
    println!("   │   ├── Name: {}", master.name());
    println!("   │   ├── Path: {}", master.path());
    println!("   │   └── Layouts: {} linked", master.layout_rel_ids().len());
    
    // ThemePart - Colors and Fonts
    println!("   ├── ThemePart (colors & fonts):");
    let mut theme = ThemePart::new(1);
    theme.set_name("Corporate Theme");
    theme.set_major_font("Arial");
    theme.set_minor_font("Calibri");
    theme.set_color("accent1", "FF5733");
    theme.set_color("accent2", "33FF57");
    let theme_xml = theme.to_xml()?;
    println!("   │   ├── Name: {}", theme.name());
    println!("   │   ├── Major Font: Arial");
    println!("   │   ├── Minor Font: Calibri");
    println!("   │   └── XML size: {} bytes", theme_xml.len());
    
    // NotesSlidePart - Speaker notes
    println!("   ├── NotesSlidePart (speaker notes):");
    let notes = NotesSlidePart::with_text(1, "Remember to:\n- Introduce yourself\n- Explain the agenda\n- Ask for questions");
    let notes_xml = notes.to_xml()?;
    println!("   │   ├── Path: {}", notes.path());
    println!("   │   ├── Text: \"{}...\"", &notes.notes_text()[..20.min(notes.notes_text().len())]);
    println!("   │   └── XML size: {} bytes", notes_xml.len());
    
    // AppPropertiesPart - Application metadata
    println!("   ├── AppPropertiesPart (metadata):");
    let mut app_props = AppPropertiesPart::new();
    app_props.set_company("Acme Corporation");
    app_props.set_slides(slides.len() as u32);
    let app_xml = app_props.to_xml()?;
    println!("   │   ├── Company: Acme Corporation");
    println!("   │   ├── Slides: {}", slides.len());
    println!("   │   └── XML size: {} bytes", app_xml.len());
    
    // MediaPart - Video/Audio formats
    println!("   ├── MediaPart (10 media formats):");
    println!("   │   ├── Video: mp4, webm, avi, wmv, mov");
    println!("   │   ├── Audio: mp3, wav, wma, m4a, ogg");
    let sample_media = MediaPart::new(1, MediaFormat::Mp4, vec![0; 100]);
    println!("   │   └── Sample: {} ({})", sample_media.path(), sample_media.format().mime_type());
    
    // TablePart - Table with formatting
    println!("   ├── TablePart (cell formatting):");
    let table_part = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Header 1").bold().background("4472C4"),
            TableCellPart::new("Header 2").bold().background("4472C4"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Data 1").color("333333"),
            TableCellPart::new("Data 2").italic(),
        ]))
        .position(EMU_PER_INCH, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 6, EMU_PER_INCH * 2);
    let table_xml = table_part.to_slide_xml(10);
    println!("   │   ├── Rows: {}", table_part.rows.len());
    println!("   │   ├── Features: bold, italic, colors, backgrounds");
    println!("   │   └── XML size: {} bytes", table_xml.len());
    
    // ContentTypesPart
    println!("   └── ContentTypesPart:");
    let mut content_types = ContentTypesPart::new();
    content_types.add_presentation();
    content_types.add_slide(1);
    content_types.add_slide_layout(1);
    content_types.add_slide_master(1);
    content_types.add_theme(1);
    content_types.add_core_properties();
    content_types.add_app_properties();
    let ct_xml = content_types.to_xml()?;
    println!("       ├── Path: {}", content_types.path());
    println!("       └── XML size: {} bytes", ct_xml.len());

    // =========================================================================
    // NEW: Elements API Demonstration
    // =========================================================================
    println!("\n🎨 Elements API Demonstration:");
    
    // Color types
    println!("   ┌── Color Types:");
    let rgb = RgbColor::new(255, 87, 51);
    let rgb_hex = RgbColor::from_hex("#4472C4").unwrap();
    let scheme = SchemeColor::Accent1;
    let color = Color::rgb(100, 149, 237);
    println!("   │   ├── RgbColor::new(255, 87, 51) → {}", rgb.to_hex());
    println!("   │   ├── RgbColor::from_hex(\"#4472C4\") → {}", rgb_hex.to_hex());
    println!("   │   ├── SchemeColor::Accent1 → {}", scheme.as_str());
    println!("   │   └── Color::rgb(100, 149, 237) → XML: {}", color.to_xml().chars().take(30).collect::<String>());
    
    // Position and Size
    println!("   ├── Position & Size (EMU units):");
    let pos = Position::from_inches(1.0, 2.0);
    let size = Size::from_inches(4.0, 3.0);
    println!("   │   ├── Position::from_inches(1.0, 2.0) → x={}, y={}", pos.x, pos.y);
    println!("   │   ├── Size::from_inches(4.0, 3.0) → w={}, h={}", size.width, size.height);
    println!("   │   └── EMU_PER_INCH = {}", EMU_PER_INCH);
    
    // Transform
    println!("   └── Transform (position + size + rotation):");
    let transform = Transform::from_inches(1.0, 1.5, 3.0, 2.0).with_rotation(45.0);
    let transform_xml = transform.to_xml();
    println!("       ├── Transform::from_inches(1.0, 1.5, 3.0, 2.0)");
    println!("       ├── .with_rotation(45.0)");
    println!("       └── XML: {}...", &transform_xml[..50.min(transform_xml.len())]);

    // =========================================================================
    // NEW: Advanced Features Demonstration
    // =========================================================================
    println!("\n🚀 Advanced Features Demonstration:");

    // -------------------------------------------------------------------------
    // Complex Table Examples
    // -------------------------------------------------------------------------
    println!("   ┌── Complex Table Examples:");
    
    // Example 1: Financial Report Table
    println!("   │   ┌── Financial Report Table (5x4 with formatting):");
    let financial_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Q1 2024 Financial Summary")
                .col_span(4)
                .bold()
                .center()
                .background("1F4E79")
                .color("FFFFFF")
                .font_size(14)
                .font("Arial Black"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Category").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Revenue").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Expenses").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Profit").bold().center().background("2E75B6").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Product Sales").align(HorizontalAlign::Left),
            TableCellPart::new("$1,250,000").align(HorizontalAlign::Right).color("2E7D32"),
            TableCellPart::new("$450,000").align(HorizontalAlign::Right).color("C62828"),
            TableCellPart::new("$800,000").align(HorizontalAlign::Right).bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Services").align(HorizontalAlign::Left),
            TableCellPart::new("$890,000").align(HorizontalAlign::Right).color("2E7D32"),
            TableCellPart::new("$320,000").align(HorizontalAlign::Right).color("C62828"),
            TableCellPart::new("$570,000").align(HorizontalAlign::Right).bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Total").bold().background("E7E6E6"),
            TableCellPart::new("$2,140,000").bold().align(HorizontalAlign::Right).background("E7E6E6"),
            TableCellPart::new("$770,000").bold().align(HorizontalAlign::Right).background("E7E6E6"),
            TableCellPart::new("$1,370,000").bold().align(HorizontalAlign::Right).background("C6EFCE").color("006100"),
        ]))
        .position(EMU_PER_INCH / 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 8, EMU_PER_INCH * 3);
    let fin_xml = financial_table.to_slide_xml(100);
    println!("   │   │   ├── Merged header spanning 4 columns");
    println!("   │   │   ├── Color-coded values (green=positive, red=negative)");
    println!("   │   │   ├── Custom fonts and sizes");
    println!("   │   │   └── XML: {} bytes", fin_xml.len());

    // Example 2: Comparison Matrix
    println!("   │   ├── Comparison Matrix (features vs products):");
    let matrix_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Feature").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Basic").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Pro").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Enterprise").bold().center().background("4472C4").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Storage").align(HorizontalAlign::Left),
            TableCellPart::new("5 GB").center(),
            TableCellPart::new("50 GB").center(),
            TableCellPart::new("Unlimited").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Users").align(HorizontalAlign::Left),
            TableCellPart::new("1").center(),
            TableCellPart::new("10").center(),
            TableCellPart::new("Unlimited").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Support").align(HorizontalAlign::Left),
            TableCellPart::new("Email").center(),
            TableCellPart::new("24/7 Chat").center(),
            TableCellPart::new("Dedicated").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Price/mo").bold().background("F2F2F2"),
            TableCellPart::new("$9").center().bold().background("F2F2F2"),
            TableCellPart::new("$29").center().bold().background("F2F2F2"),
            TableCellPart::new("$99").center().bold().background("F2F2F2"),
        ]));
    println!("   │   │   └── 5x4 matrix with alternating styles");

    // Example 3: Schedule/Timeline Table
    println!("   │   └── Schedule Table (with row spans):");
    let schedule_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Time").bold().center().background("70AD47").color("FFFFFF"),
            TableCellPart::new("Monday").bold().center().background("70AD47").color("FFFFFF"),
            TableCellPart::new("Tuesday").bold().center().background("70AD47").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("9:00 AM").center().background("E2EFDA"),
            TableCellPart::new("Team Standup").center().row_span(2).valign(VerticalAlign::Middle).background("BDD7EE"),
            TableCellPart::new("Code Review").center(),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("10:00 AM").center().background("E2EFDA"),
            TableCellPart::merged(),
            TableCellPart::new("Sprint Planning").center().background("FCE4D6"),
        ]));
    println!("   │       └── Row spans for multi-hour events");

    // -------------------------------------------------------------------------
    // Complex Animation Sequences
    // -------------------------------------------------------------------------
    println!("   ├── Complex Animation Sequences:");
    
    // Sequence 1: Title entrance with staggered content
    println!("   │   ┌── Staggered Entrance Sequence:");
    let title_anim = Animation::new(2, AnimationEffect::Fade)
        .trigger(AnimationTrigger::OnClick)
        .duration(500);
    let content1 = Animation::new(3, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(200);
    let content2 = Animation::new(4, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(100);
    let content3 = Animation::new(5, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(100);
    let staggered = SlideAnimations::new()
        .add(title_anim)
        .add(content1)
        .add(content2)
        .add(content3)
        .transition(SlideTransition::new(TransitionEffect::Push).direction(AnimationDirection::Left).duration(750));
    let staggered_xml = staggered.to_timing_xml()?;
    println!("   │   │   ├── Title: Fade on click");
    println!("   │   │   ├── Content 1-3: FlyIn with 100ms stagger");
    println!("   │   │   ├── Transition: Push from left (750ms)");
    println!("   │   │   └── XML: {} bytes", staggered_xml.len());

    // Sequence 2: Emphasis and exit
    println!("   │   ├── Emphasis + Exit Sequence:");
    let emphasis = Animation::new(6, AnimationEffect::Pulse)
        .trigger(AnimationTrigger::OnClick)
        .duration(1000)
        .repeat(3);
    let exit = Animation::new(6, AnimationEffect::FadeOut)
        .trigger(AnimationTrigger::AfterPrevious)
        .duration(500);
    let emphasis_seq = SlideAnimations::new()
        .add(emphasis)
        .add(exit);
    println!("   │   │   ├── Pulse 3x on click, then fade out");
    println!("   │   │   └── Same shape, sequential effects");

    // Sequence 3: Motion path
    println!("   │   └── Motion Path Animation:");
    let motion = Animation::new(7, AnimationEffect::Lines)
        .trigger(AnimationTrigger::OnClick)
        .duration(2000);
    println!("   │       └── Custom path: Lines, Arcs, Turns, Loops");

    // -------------------------------------------------------------------------
    // SmartArt Combinations
    // -------------------------------------------------------------------------
    println!("   ├── SmartArt Layout Examples:");
    
    // Process flow
    println!("   │   ┌── Process Flow (5 steps):");
    let process = SmartArtPart::new(1, SmartArtLayout::BasicProcess)
        .add_items(vec!["Research", "Design", "Develop", "Test", "Deploy"])
        .position(EMU_PER_INCH / 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 8, EMU_PER_INCH * 2);
    println!("   │   │   └── {} nodes in horizontal flow", process.nodes().len());

    // Organization chart
    println!("   │   ├── Organization Chart:");
    let org = SmartArtPart::new(2, SmartArtLayout::OrgChart)
        .add_items(vec!["CEO", "CTO", "CFO", "VP Engineering", "VP Sales"]);
    println!("   │   │   └── Hierarchical structure with {} positions", org.nodes().len());

    // Cycle diagram
    println!("   │   ├── Cycle Diagram:");
    let cycle = SmartArtPart::new(3, SmartArtLayout::BasicCycle)
        .add_items(vec!["Plan", "Do", "Check", "Act"]);
    println!("   │   │   └── PDCA cycle with {} phases", cycle.nodes().len());

    // Venn diagram
    println!("   │   ├── Venn Diagram:");
    let venn = SmartArtPart::new(4, SmartArtLayout::BasicVenn)
        .add_items(vec!["Skills", "Passion", "Market Need"]);
    println!("   │   │   └── 3-circle Venn for Ikigai concept");

    // Pyramid
    println!("   │   └── Pyramid:");
    let pyramid = SmartArtPart::new(5, SmartArtLayout::BasicPyramid)
        .add_items(vec!["Self-Actualization", "Esteem", "Love/Belonging", "Safety", "Physiological"]);
    println!("   │       └── Maslow's hierarchy with {} levels", pyramid.nodes().len());

    // -------------------------------------------------------------------------
    // 3D Model Configurations
    // -------------------------------------------------------------------------
    println!("   ├── 3D Model Configurations:");
    
    // Product showcase
    println!("   │   ┌── Product Showcase:");
    let product_3d = Model3DPart::new(1, Model3DFormat::Glb, vec![0; 100])
        .camera(CameraPreset::IsometricTopUp)
        .rotation(0.0, 45.0, 0.0)
        .zoom(1.2)
        .position(EMU_PER_INCH * 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 4, EMU_PER_INCH * 4);
    println!("   │   │   ├── Camera: Isometric top-up view");
    println!("   │   │   ├── Rotation: 45° Y-axis for best angle");
    println!("   │   │   └── Zoom: 1.2x for detail");

    // Architectural model
    println!("   │   ├── Architectural Model:");
    let arch_3d = Model3DPart::new(2, Model3DFormat::Gltf, vec![0; 100])
        .camera(CameraPreset::Front)
        .rotation(15.0, -30.0, 0.0)
        .ambient_light("FFFFCC");
    println!("   │   │   ├── Camera: Front view with tilt");
    println!("   │   │   └── Ambient: Warm lighting (FFFFCC)");

    // Technical diagram
    println!("   │   └── Technical Diagram:");
    let tech_3d = Model3DPart::new(3, Model3DFormat::Obj, vec![0; 100])
        .camera(CameraPreset::IsometricOffAxis1Top)
        .rotation(0.0, 0.0, 0.0);
    println!("   │       └── Camera: Off-axis isometric for exploded view");

    // -------------------------------------------------------------------------
    // Theme + Master + Layout Combination
    // -------------------------------------------------------------------------
    println!("   ├── Theme + Master + Layout Integration:");
    
    // Corporate theme
    let mut corp_theme = ThemePart::new(1);
    corp_theme.set_name("Corporate Blue");
    corp_theme.set_major_font("Segoe UI");
    corp_theme.set_minor_font("Segoe UI Light");
    corp_theme.set_color("dk1", "000000");
    corp_theme.set_color("lt1", "FFFFFF");
    corp_theme.set_color("dk2", "1F497D");
    corp_theme.set_color("lt2", "EEECE1");
    corp_theme.set_color("accent1", "4472C4");
    corp_theme.set_color("accent2", "ED7D31");
    corp_theme.set_color("accent3", "A5A5A5");
    corp_theme.set_color("accent4", "FFC000");
    corp_theme.set_color("accent5", "5B9BD5");
    corp_theme.set_color("accent6", "70AD47");
    let theme_xml = corp_theme.to_xml()?;
    println!("   │   ├── Theme: Corporate Blue");
    println!("   │   │   ├── Fonts: Segoe UI / Segoe UI Light");
    println!("   │   │   ├── 12 color slots defined");
    println!("   │   │   └── XML: {} bytes", theme_xml.len());

    // Master with multiple layouts
    let mut corp_master = SlideMasterPart::new(1);
    corp_master.set_name("Corporate Master");
    corp_master.add_layout_rel_id("rId2"); // Title
    corp_master.add_layout_rel_id("rId3"); // Title + Content
    corp_master.add_layout_rel_id("rId4"); // Section Header
    corp_master.add_layout_rel_id("rId5"); // Two Content
    corp_master.add_layout_rel_id("rId6"); // Comparison
    corp_master.add_layout_rel_id("rId7"); // Title Only
    corp_master.add_layout_rel_id("rId8"); // Blank
    println!("   │   └── Master: {} with {} layouts linked", corp_master.name(), corp_master.layout_rel_ids().len());

    // -------------------------------------------------------------------------
    // VBA + Custom XML Integration
    // -------------------------------------------------------------------------
    println!("   ├── VBA + Custom XML Integration:");
    
    // VBA with multiple modules
    let vba_project = VbaProjectPart::new()
        .add_module(VbaModule::new("AutoRun", r#"
Sub Auto_Open()
    MsgBox "Welcome to the presentation!"
End Sub

Sub NavigateToSlide(slideNum As Integer)
    SlideShowWindows(1).View.GotoSlide slideNum
End Sub
"#))
        .add_module(VbaModule::new("DataHelpers", r#"
Function GetCustomData(key As String) As String
    ' Read from Custom XML part
    GetCustomData = ActivePresentation.CustomXMLParts(1).SelectSingleNode("//" & key).Text
End Function
"#))
        .add_module(VbaModule::class("SlideController", r#"
Private currentSlide As Integer

Public Sub NextSlide()
    currentSlide = currentSlide + 1
    NavigateToSlide currentSlide
End Sub
"#));
    println!("   │   ├── VBA Project:");
    println!("   │   │   ├── AutoRun: Auto_Open, NavigateToSlide");
    println!("   │   │   ├── DataHelpers: GetCustomData (reads Custom XML)");
    println!("   │   │   └── SlideController: Class for navigation");

    // Custom XML with structured data
    let app_config = CustomXmlPart::new(1, "presentationConfig")
        .namespace("http://company.com/pptx/config")
        .property("version", "2.1.0")
        .property("author", "Demo User")
        .property("department", "Engineering")
        .property("confidentiality", "Internal")
        .property("lastModified", "2024-01-15T10:30:00Z");
    let config_xml = app_config.to_xml()?;
    println!("   │   └── Custom XML:");
    println!("   │       ├── Namespace: http://company.com/pptx/config");
    println!("   │       ├── Properties: version, author, department, etc.");
    println!("   │       └── XML: {} bytes", config_xml.len());

    // -------------------------------------------------------------------------
    // Embedded Fonts with Variants
    // -------------------------------------------------------------------------
    println!("   ├── Embedded Font Collection:");
    let mut font_collection = EmbeddedFontCollection::new();
    font_collection.add("Corporate Sans", vec![0; 1000]);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::Bold);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::Italic);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::BoldItalic);
    font_collection.add("Code Mono", vec![0; 800]);
    let fonts_xml = font_collection.to_xml();
    println!("   │   ├── Corporate Sans: Regular, Bold, Italic, BoldItalic");
    println!("   │   ├── Code Mono: Regular");
    println!("   │   ├── Total: {} font files", font_collection.len());
    println!("   │   └── XML: {} bytes", fonts_xml.len());

    // -------------------------------------------------------------------------
    // Handout with Full Configuration
    // -------------------------------------------------------------------------
    println!("   └── Handout Master Configuration:");
    let handout = HandoutMasterPart::new()
        .layout(HandoutLayout::SlidesPerPage6)
        .header("Q1 2024 Strategy Review")
        .footer("Confidential - Internal Use Only");
    let handout_xml = handout.to_xml()?;
    println!("       ├── Layout: 6 slides per page");
    println!("       ├── Header: Q1 2024 Strategy Review");
    println!("       ├── Footer: Confidential - Internal Use Only");
    println!("       └── XML: {} bytes", handout_xml.len());

    // =========================================================================
    // Summary
    // =========================================================================
    println!("\n╔══════════════════════════════════════════════════════════════╗");
    println!("║                    Element Coverage Summary                   ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  LAYOUTS (6 types):                                          ║");
    println!("║    ✓ CenteredTitle    ✓ TitleOnly      ✓ TitleAndContent     ║");
    println!("║    ✓ TitleAndBigContent  ✓ TwoColumn   ✓ Blank               ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  TEXT FORMATTING:                                            ║");
    println!("║    ✓ Bold            ✓ Italic         ✓ Underline            ║");
    println!("║    ✓ Font Size       ✓ Font Color     ✓ Title/Content styles ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  TABLES:                                                     ║");
    println!("║    ✓ Multiple rows/columns  ✓ Bold cells  ✓ Background colors║");
    println!("║    ✓ Header styling         ✓ Position control               ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  CHARTS:                                                     ║");
    println!("║    ✓ Bar Chart       ✓ Line Chart     ✓ Pie Chart            ║");
    println!("║    ✓ Multiple series ✓ Categories                            ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  SHAPES:                                                     ║");
    println!("║    ✓ Rectangle       ✓ Ellipse        ✓ RoundedRectangle     ║");
    println!("║    ✓ Triangle        ✓ Diamond        ✓ Color fills          ║");
    println!("║    ✓ Gradient fills  ✓ Transparency   ✓ Text in shapes       ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  CONNECTORS (NEW):                                           ║");
    println!("║    ✓ Straight        ✓ Elbow          ✓ Curved               ║");
    println!("║    ✓ Arrow types     ✓ Dash styles    ✓ Line colors/widths   ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  IMAGES:                                                     ║");
    println!("║    ✓ Image placeholders  ✓ Position   ✓ Dimensions           ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  PACKAGE:                                                    ║");
    println!("║    ✓ Create PPTX     ✓ Read PPTX      ✓ Analyze contents     ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  PARTS API (NEW):                                            ║");
    println!("║    ✓ SlideLayoutPart (11 types)  ✓ SlideMasterPart           ║");
    println!("║    ✓ ThemePart (colors/fonts)    ✓ NotesSlidePart            ║");
    println!("║    ✓ AppPropertiesPart           ✓ MediaPart (10 formats)    ║");
    println!("║    ✓ TablePart (cell formatting) ✓ ContentTypesPart          ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  ELEMENTS API:                                               ║");
    println!("║    ✓ RgbColor        ✓ SchemeColor    ✓ Color enum           ║");
    println!("║    ✓ Position        ✓ Size           ✓ Transform            ║");
    println!("║    ✓ EMU conversions (inches, cm, mm, pt)                    ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  ADVANCED FEATURES (NEW):                                    ║");
    println!("║    ✓ Animation (50+ effects)  ✓ Transitions (27 types)       ║");
    println!("║    ✓ SmartArt (25 layouts)    ✓ 3D Models (GLB/GLTF/OBJ)     ║");
    println!("║    ✓ VBA Macros (.pptm)       ✓ Embedded Fonts               ║");
    println!("║    ✓ Custom XML               ✓ Handout Master               ║");
    println!("║    ✓ Table borders/alignment  ✓ Merged cells                 ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  Output: comprehensive_demo.pptx ({} slides, {} KB)         ║", 
             slides.len(), pptx_data.len() / 1024);
    println!("╚══════════════════════════════════════════════════════════════╝");

    Ok(())
}

pub fn title_underline(self, underline: bool) -> Self

Examples found in repository

examples/text_styling_complete.rs (line 60)

fn create_italic_underline_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Italic Text")
            .title_italic(true)
            .add_bullet("This is italic content")
            .add_bullet("More italic text here"),
        SlideContent::new("Underlined Text")
            .title_underline(true)
            .content_underline(true)
            .add_bullet("Underlined bullet point 1")
            .add_bullet("Underlined bullet point 2"),
        SlideContent::new("Combined Effects")
            .title_italic(true)
            .title_underline(true)
            .content_italic(true)
            .add_bullet("Italic and underlined content")
            .add_bullet("Multiple effects combined"),
    ];

    let pptx_data = create_pptx_with_content("Italic and Underline", slides)?;
    fs::write("examples/output/italic_underline.pptx", pptx_data)?;
    Ok(())
}

fn create_colored_text_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Red Title")
            .title_color("FF0000")
            .add_bullet("Red title text")
            .add_bullet("Regular content"),
        SlideContent::new("Blue Content")
            .content_color("0000FF")
            .add_bullet("Blue bullet point 1")
            .add_bullet("Blue bullet point 2")
            .add_bullet("Blue bullet point 3"),
        SlideContent::new("Green Title & Content")
            .title_color("00AA00")
            .content_color("00AA00")
            .add_bullet("Green title and content")
            .add_bullet("All text is green"),
        SlideContent::new("Purple Accent")
            .title_color("9933FF")
            .add_bullet("Purple title")
            .add_bullet("Regular content"),
    ];

    let pptx_data = create_pptx_with_content("Colored Text", slides)?;
    fs::write("examples/output/colored_text.pptx", pptx_data)?;
    Ok(())
}

fn create_combined_styling_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Bold & Italic & Red")
            .title_bold(true)
            .title_italic(true)
            .title_color("FF0000")
            .title_size(52)
            .add_bullet("Regular content"),
        SlideContent::new("Underlined Blue Content")
            .content_underline(true)
            .content_color("0000FF")
            .content_bold(true)
            .add_bullet("Bold, underlined, blue bullet")
            .add_bullet("Multiple effects applied"),
        SlideContent::new("Mixed Effects")
            .title_italic(true)
            .title_color("FF6600")
            .content_bold(true)
            .content_underline(true)
            .content_color("0066FF")
            .add_bullet("Title: italic, orange")
            .add_bullet("Content: bold, underlined, blue"),
        SlideContent::new("Professional Look")
            .title_bold(true)
            .title_size(48)
            .title_color("003366")
            .content_size(24)
            .add_bullet("Clean, professional styling")
            .add_bullet("Dark blue title with bold")
            .add_bullet("Larger content text"),
    ];

    let pptx_data = create_pptx_with_content("Combined Styling", slides)?;
    fs::write("examples/output/combined_styling.pptx", pptx_data)?;
    Ok(())
}

fn create_professional_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Company Presentation")
            .title_bold(true)
            .title_size(56)
            .title_color("003366")
            .content_size(32)
            .add_bullet("2025 Annual Review"),
        SlideContent::new("Key Highlights")
            .title_bold(true)
            .title_color("003366")
            .content_bold(true)
            .content_color("0066CC")
            .add_bullet("Revenue growth: +25%")
            .add_bullet("Market expansion: 3 new regions")
            .add_bullet("Team growth: +50 employees"),
        SlideContent::new("Strategic Initiatives")
            .title_italic(true)
            .title_color("FF6600")
            .content_underline(true)
            .add_bullet("Digital transformation")
            .add_bullet("Customer experience improvement")
            .add_bullet("Sustainability focus"),
        SlideContent::new("Q1 2025 Goals")
            .title_bold(true)
            .title_underline(true)
            .title_color("003366")
            .content_bold(true)
            .add_bullet("Launch new product line")
            .add_bullet("Expand to 5 new markets")
            .add_bullet("Achieve 30% revenue growth"),
        SlideContent::new("Thank You")
            .title_bold(true)
            .title_size(60)
            .title_color("003366")
            .content_italic(true)
            .content_size(28)
            .add_bullet("Questions & Discussion"),
    ];

    let pptx_data = create_pptx_with_content("Professional Presentation", slides)?;
    fs::write("examples/output/professional.pptx", pptx_data)?;
    Ok(())
}

examples/comprehensive_demo.rs (line 109)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    println!("╔══════════════════════════════════════════════════════════════╗");
    println!("║       PPTX-RS Element Showcase - Complete Coverage           ║");
    println!("╚══════════════════════════════════════════════════════════════╝\n");

    let mut slides = Vec::new();

    // =========================================================================
    // SLIDE 1: CenteredTitle Layout + Title Formatting
    // =========================================================================
    println!("📐 Slide 1: CenteredTitle Layout + Title Formatting");
    slides.push(
        SlideContent::new("PPTX-RS Element Showcase")
            .layout(SlideLayout::CenteredTitle)
            .title_size(54)
            .title_bold(true)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 2: TitleOnly Layout
    // =========================================================================
    println!("📐 Slide 2: TitleOnly Layout");
    slides.push(
        SlideContent::new("Section: Slide Layouts")
            .layout(SlideLayout::TitleOnly)
            .title_size(48)
            .title_bold(true)
            .title_color("C0504D")
    );

    // =========================================================================
    // SLIDE 3: TitleAndContent Layout + All Text Formatting
    // =========================================================================
    println!("📝 Slide 3: TitleAndContent + Text Formatting");
    slides.push(
        SlideContent::new("Text Formatting Options")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .title_italic(true)
            .title_underline(true)
            .title_size(44)
            .add_bullet("Normal text (default)")
            .add_bullet("Bold content text")
            .add_bullet("Italic content text")
            .add_bullet("Underlined content")
            .add_bullet("Custom font size (28pt)")
            .add_bullet("Custom color (#4F81BD)")
            .content_bold(true)
            .content_italic(true)
            .content_underline(true)
            .content_size(28)
            .content_color("4F81BD")
    );

    // =========================================================================
    // SLIDE 4: TitleAndBigContent Layout
    // =========================================================================
    println!("📐 Slide 4: TitleAndBigContent Layout");
    slides.push(
        SlideContent::new("Key Highlights")
            .layout(SlideLayout::TitleAndBigContent)
            .title_color("1F497D")
            .add_bullet("Large content area for emphasis")
            .add_bullet("Perfect for key messages")
            .add_bullet("Smaller title, bigger content")
            .content_bold(true)
            .content_size(32)
    );

    // =========================================================================
    // SLIDE 5: TwoColumn Layout
    // =========================================================================
    println!("📐 Slide 5: TwoColumn Layout");
    slides.push(
        SlideContent::new("Two Column Comparison")
            .layout(SlideLayout::TwoColumn)
            .title_color("1F497D")
            .add_bullet("Left Column Item 1")
            .add_bullet("Left Column Item 2")
            .add_bullet("Left Column Item 3")
            .add_bullet("Right Column Item 1")
            .add_bullet("Right Column Item 2")
            .add_bullet("Right Column Item 3")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 6: Blank Layout
    // =========================================================================
    println!("📐 Slide 6: Blank Layout");
    slides.push(
        SlideContent::new("")
            .layout(SlideLayout::Blank)
    );

    // =========================================================================
    // SLIDE 7: Table with All Cell Styling Options
    // =========================================================================
    println!("📊 Slide 7: Table with Cell Styling");
    let styled_table = TableBuilder::new(vec![1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Header 1").bold().background_color("1F497D"),
            TableCell::new("Header 2").bold().background_color("4F81BD"),
            TableCell::new("Header 3").bold().background_color("8064A2"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Bold Cell").bold(),
            TableCell::new("Normal Cell"),
            TableCell::new("Colored").background_color("9BBB59"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Red BG").background_color("C0504D"),
            TableCell::new("Green BG").background_color("9BBB59"),
            TableCell::new("Blue BG").background_color("4F81BD"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Row 3 Col 1"),
            TableCell::new("Row 3 Col 2"),
            TableCell::new("Row 3 Col 3").bold().background_color("F79646"),
        ]))
        .position(500000, 1800000)
        .build();
    
    slides.push(
        SlideContent::new("Table with Cell Styling")
            .table(styled_table)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 8: Charts (Bar, Line, Pie)
    // =========================================================================
    println!("📈 Slide 8: Chart Types");
    
    // Create chart data structures (for demonstration)
    let _bar_chart = ChartBuilder::new("Sales by Region", ChartType::Bar)
        .categories(vec!["North", "South", "East", "West"])
        .add_series(ChartSeries::new("2023", vec![100.0, 80.0, 120.0, 90.0]))
        .add_series(ChartSeries::new("2024", vec![120.0, 95.0, 140.0, 110.0]))
        .build();
    
    let _line_chart = ChartBuilder::new("Monthly Trend", ChartType::Line)
        .categories(vec!["Jan", "Feb", "Mar", "Apr", "May", "Jun"])
        .add_series(ChartSeries::new("Revenue", vec![10.0, 12.0, 15.0, 14.0, 18.0, 22.0]))
        .build();
    
    let _pie_chart = ChartBuilder::new("Market Share", ChartType::Pie)
        .categories(vec!["Product A", "Product B", "Product C", "Others"])
        .add_series(ChartSeries::new("Share", vec![40.0, 30.0, 20.0, 10.0]))
        .build();
    
    slides.push(
        SlideContent::new("Chart Types: Bar, Line, Pie")
            .with_chart()
            .title_color("1F497D")
            .add_bullet("Bar Chart: Compare categories")
            .add_bullet("Line Chart: Show trends over time")
            .add_bullet("Pie Chart: Show proportions")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 9: Shapes with Different Fills
    // =========================================================================
    println!("🔷 Slide 9: Shapes with Fills");
    
    let rect = Shape::new(ShapeType::Rectangle, 500000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("4F81BD"))
        .with_text("Rectangle");
    
    let ellipse = Shape::new(ShapeType::Ellipse, 3000000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("9BBB59"))
        .with_text("Ellipse");
    
    let rounded = Shape::new(ShapeType::RoundedRectangle, 5500000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("C0504D"))
        .with_text("Rounded");
    
    let triangle = Shape::new(ShapeType::Triangle, 1500000, 3000000, 1500000, 1200000)
        .with_fill(ShapeFill::new("8064A2"))
        .with_text("Triangle");
    
    let diamond = Shape::new(ShapeType::Diamond, 4000000, 3000000, 1500000, 1200000)
        .with_fill(ShapeFill::new("F79646"))
        .with_text("Diamond");
    
    slides.push(
        SlideContent::new("Shape Types with Color Fills")
            .add_shape(rect)
            .add_shape(ellipse)
            .add_shape(rounded)
            .add_shape(triangle)
            .add_shape(diamond)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 10: Gradient Fills (NEW)
    // =========================================================================
    println!("🌈 Slide 10: Gradient Fills");
    
    // Horizontal gradient
    let gradient_h = Shape::new(ShapeType::Rectangle, 500000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("1565C0", "42A5F5", GradientDirection::Horizontal))
        .with_text("Horizontal");
    
    // Vertical gradient
    let gradient_v = Shape::new(ShapeType::Rectangle, 3200000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("2E7D32", "81C784", GradientDirection::Vertical))
        .with_text("Vertical");
    
    // Diagonal gradient
    let gradient_d = Shape::new(ShapeType::RoundedRectangle, 5900000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("C62828", "EF9A9A", GradientDirection::DiagonalDown))
        .with_text("Diagonal");
    
    // Three-color gradient
    let gradient_3 = Shape::new(ShapeType::Ellipse, 1800000, 3200000, 2500000, 1200000)
        .with_gradient(GradientFill::three_color("FF6F00", "FFC107", "FFEB3B", GradientDirection::Horizontal))
        .with_text("3-Color");
    
    // Custom angle gradient
    let gradient_angle = Shape::new(ShapeType::RoundedRectangle, 4800000, 3200000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("7B1FA2", "E1BEE7", GradientDirection::Angle(135)))
        .with_text("135° Angle");
    
    slides.push(
        SlideContent::new("Gradient Fills - Multiple Directions")
            .add_shape(gradient_h)
            .add_shape(gradient_v)
            .add_shape(gradient_d)
            .add_shape(gradient_3)
            .add_shape(gradient_angle)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 11: Transparency (NEW)
    // =========================================================================
    println!("👻 Slide 11: Transparency Effects");
    
    // Base shape (fully opaque)
    let base = Shape::new(ShapeType::Rectangle, 1000000, 1800000, 3000000, 2000000)
        .with_fill(ShapeFill::new("1565C0"))
        .with_text("Base (100%)");
    
    // 25% transparent overlay
    let trans_25 = Shape::new(ShapeType::Rectangle, 2000000, 2200000, 2500000, 1500000)
        .with_fill(ShapeFill::new("F44336").with_transparency(25))
        .with_line(ShapeLine::new("B71C1C", 25400))
        .with_text("25% Transparent");
    
    // 50% transparent overlay
    let trans_50 = Shape::new(ShapeType::Ellipse, 4500000, 1800000, 2500000, 2000000)
        .with_fill(ShapeFill::new("4CAF50").with_transparency(50))
        .with_line(ShapeLine::new("1B5E20", 25400))
        .with_text("50% Transparent");
    
    // 75% transparent overlay
    let trans_75 = Shape::new(ShapeType::RoundedRectangle, 5500000, 2500000, 2500000, 1500000)
        .with_fill(ShapeFill::new("FF9800").with_transparency(75))
        .with_line(ShapeLine::new("E65100", 25400))
        .with_text("75% Transparent");
    
    slides.push(
        SlideContent::new("Transparency Effects - Overlapping Shapes")
            .add_shape(base)
            .add_shape(trans_25)
            .add_shape(trans_50)
            .add_shape(trans_75)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 12: Styled Connectors (NEW)
    // =========================================================================
    println!("🔗 Slide 12: Styled Connectors");
    
    // Create shapes to connect
    let box1 = Shape::new(ShapeType::RoundedRectangle, 500000, 1800000, 1800000, 800000)
        .with_id(100)
        .with_fill(ShapeFill::new("1565C0"))
        .with_text("Start");
    
    let box2 = Shape::new(ShapeType::RoundedRectangle, 3500000, 1800000, 1800000, 800000)
        .with_id(101)
        .with_fill(ShapeFill::new("2E7D32"))
        .with_text("Process");
    
    let box3 = Shape::new(ShapeType::RoundedRectangle, 6500000, 1800000, 1800000, 800000)
        .with_id(102)
        .with_fill(ShapeFill::new("C62828"))
        .with_text("End");
    
    // Straight connector with arrow
    let conn1 = Connector::straight(2300000, 2200000, 3500000, 2200000)
        .with_line(ConnectorLine::new("1565C0", 25400))
        .with_end_arrow(ArrowType::Triangle)
        .with_arrow_size(ArrowSize::Large);
    
    // Elbow connector with stealth arrow
    let conn2 = Connector::elbow(5300000, 2200000, 6500000, 2200000)
        .with_line(ConnectorLine::new("2E7D32", 38100).with_dash(LineDash::Dash))
        .with_end_arrow(ArrowType::Stealth)
        .with_arrow_size(ArrowSize::Medium);
    
    // Curved connector examples
    let box4 = Shape::new(ShapeType::Ellipse, 1000000, 3200000, 1500000, 800000)
        .with_id(103)
        .with_fill(ShapeFill::new("7B1FA2"))
        .with_text("A");
    
    let box5 = Shape::new(ShapeType::Ellipse, 4000000, 3200000, 1500000, 800000)
        .with_id(104)
        .with_fill(ShapeFill::new("00838F"))
        .with_text("B");
    
    let box6 = Shape::new(ShapeType::Ellipse, 7000000, 3200000, 1500000, 800000)
        .with_id(105)
        .with_fill(ShapeFill::new("EF6C00"))
        .with_text("C");
    
    // Curved connector with diamond arrow
    let conn3 = Connector::curved(2500000, 3600000, 4000000, 3600000)
        .with_line(ConnectorLine::new("7B1FA2", 19050).with_dash(LineDash::DashDot))
        .with_arrows(ArrowType::Oval, ArrowType::Diamond);
    
    // Dotted connector
    let conn4 = Connector::straight(5500000, 3600000, 7000000, 3600000)
        .with_line(ConnectorLine::new("00838F", 12700).with_dash(LineDash::Dot))
        .with_end_arrow(ArrowType::Open);
    
    slides.push(
        SlideContent::new("Styled Connectors - Types, Arrows, Dashes")
            .add_shape(box1)
            .add_shape(box2)
            .add_shape(box3)
            .add_shape(box4)
            .add_shape(box5)
            .add_shape(box6)
            .add_connector(conn1)
            .add_connector(conn2)
            .add_connector(conn3)
            .add_connector(conn4)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 13: Images
    // =========================================================================
    println!("🖼️  Slide 13: Image Placeholders");
    
    let img1 = Image::new("logo.png", 2500000, 1800000, "png")
        .position(500000, 1600000);
    let img2 = Image::new("photo.jpg", 2500000, 1800000, "jpg")
        .position(3500000, 1600000);
    let img3 = Image::new("diagram.png", 2000000, 1800000, "png")
        .position(6500000, 1600000);
    
    slides.push(
        SlideContent::new("Image Placeholders")
            .add_image(img1)
            .add_image(img2)
            .add_image(img3)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 11: Advanced Table with Borders & Alignment (NEW)
    // =========================================================================
    println!("📊 Slide 11: Advanced Table (borders, alignment, merged cells)");
    
    // Build advanced table using generator's TableBuilder with alignment
    let advanced_table = TableBuilder::new(vec![2000000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2024 Financial Report").bold().background_color("1F4E79").text_color("FFFFFF").align_center().font_size(14),
            TableCell::new("").background_color("1F4E79"),
            TableCell::new("").background_color("1F4E79"),
            TableCell::new("").background_color("1F4E79"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Category").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Revenue").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Expenses").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Profit").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Product Sales").text_color("000000").align_left(),
            TableCell::new("$1,250,000").text_color("2E7D32").align_right(),
            TableCell::new("$450,000").text_color("C62828").align_right(),
            TableCell::new("$800,000").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Services").text_color("000000").align_left(),
            TableCell::new("$890,000").text_color("2E7D32").align_right(),
            TableCell::new("$320,000").text_color("C62828").align_right(),
            TableCell::new("$570,000").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Total").bold().background_color("E7E6E6").text_color("000000").align_left(),
            TableCell::new("$2,140,000").bold().background_color("E7E6E6").text_color("000000").align_right(),
            TableCell::new("$770,000").bold().background_color("E7E6E6").text_color("000000").align_right(),
            TableCell::new("$1,370,000").bold().background_color("C6EFCE").text_color("006100").align_right(),
        ]))
        .position(300000, 1600000)
        .build();
    
    slides.push(
        SlideContent::new("Financial Report - Advanced Table")
            .table(advanced_table)
            .title_color("1F4E79")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 12: Comparison Matrix Table (NEW)
    // =========================================================================
    println!("📊 Slide 12: Comparison Matrix Table");
    
    let comparison_table = TableBuilder::new(vec![2000000, 1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Feature").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Basic").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Pro").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Enterprise").bold().background_color("4472C4").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Storage").text_color("000000"),
            TableCell::new("5 GB").text_color("000000"),
            TableCell::new("50 GB").text_color("000000"),
            TableCell::new("Unlimited").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Users").text_color("000000"),
            TableCell::new("1").text_color("000000"),
            TableCell::new("10").text_color("000000"),
            TableCell::new("Unlimited").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Support").text_color("000000"),
            TableCell::new("Email").text_color("000000"),
            TableCell::new("24/7 Chat").text_color("000000"),
            TableCell::new("Dedicated").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("API Access").text_color("000000"),
            TableCell::new("No").text_color("C62828"),
            TableCell::new("Yes").text_color("2E7D32"),
            TableCell::new("Yes + Priority").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Price/month").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$9").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$29").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$99").bold().background_color("F2F2F2").text_color("000000"),
        ]))
        .position(500000, 1600000)
        .build();
    
    slides.push(
        SlideContent::new("Pricing Comparison Matrix")
            .table(comparison_table)
            .title_color("4472C4")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 13: Process Flow with Shapes (NEW - SmartArt-like)
    // =========================================================================
    println!("🔷 Slide 13: Process Flow (SmartArt-style)");
    
    // Create process flow using shapes
    let step1 = Shape::new(ShapeType::RoundedRectangle, 300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("1. Research");
    let arrow1 = Shape::new(ShapeType::RightArrow, 1800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step2 = Shape::new(ShapeType::RoundedRectangle, 2300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("2. Design");
    let arrow2 = Shape::new(ShapeType::RightArrow, 3800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step3 = Shape::new(ShapeType::RoundedRectangle, 4300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("3. Develop");
    let arrow3 = Shape::new(ShapeType::RightArrow, 5800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step4 = Shape::new(ShapeType::RoundedRectangle, 6300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("5B9BD5"))
        .with_text("4. Deploy");
    
    slides.push(
        SlideContent::new("Development Process Flow")
            .add_shape(step1)
            .add_shape(arrow1)
            .add_shape(step2)
            .add_shape(arrow2)
            .add_shape(step3)
            .add_shape(arrow3)
            .add_shape(step4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 14: Organization Chart with Shapes (NEW)
    // =========================================================================
    println!("🔷 Slide 14: Organization Chart");
    
    // CEO at top
    let ceo = Shape::new(ShapeType::RoundedRectangle, 3500000, 1400000, 2000000, 600000)
        .with_fill(ShapeFill::new("1F4E79"))
        .with_text("CEO");
    
    // Vertical line from CEO
    let line1 = Shape::new(ShapeType::Rectangle, 4450000, 2000000, 100000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // Horizontal connector
    let hline = Shape::new(ShapeType::Rectangle, 1950000, 2400000, 5100000, 50000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // CTO, CFO, COO
    let cto = Shape::new(ShapeType::RoundedRectangle, 1000000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("CTO");
    let cfo = Shape::new(ShapeType::RoundedRectangle, 3600000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("CFO");
    let coo = Shape::new(ShapeType::RoundedRectangle, 6200000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("COO");
    
    // Vertical lines to departments
    let vline1 = Shape::new(ShapeType::Rectangle, 1850000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let vline2 = Shape::new(ShapeType::Rectangle, 4450000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let vline3 = Shape::new(ShapeType::Rectangle, 7050000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // Teams under CTO
    let eng = Shape::new(ShapeType::Rectangle, 500000, 3300000, 1200000, 400000)
        .with_fill(ShapeFill::new("BDD7EE"))
        .with_text("Engineering");
    let product = Shape::new(ShapeType::Rectangle, 1800000, 3300000, 1200000, 400000)
        .with_fill(ShapeFill::new("BDD7EE"))
        .with_text("Product");
    
    slides.push(
        SlideContent::new("Organization Structure")
            .add_shape(ceo)
            .add_shape(line1)
            .add_shape(hline)
            .add_shape(cto)
            .add_shape(cfo)
            .add_shape(coo)
            .add_shape(vline1)
            .add_shape(vline2)
            .add_shape(vline3)
            .add_shape(eng)
            .add_shape(product)
            .title_color("1F4E79")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 15: PDCA Cycle Diagram (NEW)
    // =========================================================================
    println!("🔷 Slide 15: PDCA Cycle Diagram");
    
    // Four quadrants for PDCA
    let plan = Shape::new(ShapeType::RoundedRectangle, 1500000, 1600000, 2500000, 1500000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("PLAN\n\nDefine goals\nand strategy");
    let do_box = Shape::new(ShapeType::RoundedRectangle, 4500000, 1600000, 2500000, 1500000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("DO\n\nImplement\nthe plan");
    let check = Shape::new(ShapeType::RoundedRectangle, 4500000, 3300000, 2500000, 1500000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("CHECK\n\nMeasure\nresults");
    let act = Shape::new(ShapeType::RoundedRectangle, 1500000, 3300000, 2500000, 1500000)
        .with_fill(ShapeFill::new("FFC000"))
        .with_text("ACT\n\nAdjust and\nimprove");
    
    // Arrows between quadrants
    let arr1 = Shape::new(ShapeType::RightArrow, 4100000, 2100000, 300000, 300000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr2 = Shape::new(ShapeType::DownArrow, 5600000, 3200000, 300000, 200000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr3 = Shape::new(ShapeType::LeftArrow, 4100000, 3800000, 300000, 300000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr4 = Shape::new(ShapeType::UpArrow, 2600000, 3200000, 300000, 200000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    slides.push(
        SlideContent::new("PDCA Continuous Improvement Cycle")
            .add_shape(plan)
            .add_shape(do_box)
            .add_shape(check)
            .add_shape(act)
            .add_shape(arr1)
            .add_shape(arr2)
            .add_shape(arr3)
            .add_shape(arr4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 16: Pyramid Diagram (Maslow's Hierarchy) (NEW)
    // =========================================================================
    println!("🔷 Slide 16: Pyramid Diagram");
    
    // Build pyramid from bottom to top
    let level5 = Shape::new(ShapeType::Trapezoid, 500000, 4000000, 8000000, 600000)
        .with_fill(ShapeFill::new("C00000"))
        .with_text("Physiological Needs - Food, Water, Shelter");
    let level4 = Shape::new(ShapeType::Trapezoid, 1000000, 3400000, 7000000, 600000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Safety Needs - Security, Stability");
    let level3 = Shape::new(ShapeType::Trapezoid, 1500000, 2800000, 6000000, 600000)
        .with_fill(ShapeFill::new("FFC000"))
        .with_text("Love & Belonging - Relationships");
    let level2 = Shape::new(ShapeType::Trapezoid, 2000000, 2200000, 5000000, 600000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Esteem - Achievement, Respect");
    let level1 = Shape::new(ShapeType::Triangle, 2500000, 1500000, 4000000, 700000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Self-Actualization");
    
    slides.push(
        SlideContent::new("Maslow's Hierarchy of Needs")
            .add_shape(level5)
            .add_shape(level4)
            .add_shape(level3)
            .add_shape(level2)
            .add_shape(level1)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 17: Venn Diagram (NEW)
    // =========================================================================
    println!("🔷 Slide 17: Venn Diagram");
    
    // Three overlapping circles
    let circle1 = Shape::new(ShapeType::Ellipse, 1500000, 1800000, 3000000, 3000000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Skills");
    let circle2 = Shape::new(ShapeType::Ellipse, 3500000, 1800000, 3000000, 3000000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Passion");
    let circle3 = Shape::new(ShapeType::Ellipse, 2500000, 3200000, 3000000, 3000000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Market Need");
    
    // Center label
    let center = Shape::new(ShapeType::Ellipse, 3200000, 2800000, 1600000, 800000)
        .with_fill(ShapeFill::new("FFFFFF"))
        .with_text("IKIGAI");
    
    slides.push(
        SlideContent::new("Finding Your Ikigai - Venn Diagram")
            .add_shape(circle1)
            .add_shape(circle2)
            .add_shape(circle3)
            .add_shape(center)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 18: Timeline/Roadmap (NEW)
    // =========================================================================
    println!("📊 Slide 18: Project Timeline");
    
    let timeline_table = TableBuilder::new(vec![1500000, 1500000, 1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q2 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q3 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q4 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q1 2025").bold().background_color("4472C4").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Research\n& Planning").background_color("BDD7EE").text_color("1F497D"),
            TableCell::new("Design\nPhase").background_color("BDD7EE").text_color("1F497D"),
            TableCell::new("Development\nSprint 1-3").background_color("C6EFCE").text_color("006100"),
            TableCell::new("Testing\n& QA").background_color("FCE4D6").text_color("C65911"),
            TableCell::new("Launch\n& Support").background_color("E2EFDA").text_color("375623"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("✓ Complete").bold().text_color("2E7D32"),
            TableCell::new("✓ Complete").bold().text_color("2E7D32"),
            TableCell::new("In Progress").text_color("ED7D31"),
            TableCell::new("Planned").text_color("7F7F7F"),
            TableCell::new("Planned").text_color("7F7F7F"),
        ]))
        .position(300000, 2000000)
        .build();
    
    slides.push(
        SlideContent::new("Project Roadmap 2024-2025")
            .table(timeline_table)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 19: Dashboard Summary (NEW)
    // =========================================================================
    println!("🔷 Slide 19: Dashboard with KPIs");
    
    // KPI boxes
    let kpi1 = Shape::new(ShapeType::RoundedRectangle, 300000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Revenue\n\n$2.14M\n+15% YoY");
    let kpi2 = Shape::new(ShapeType::RoundedRectangle, 2500000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Customers\n\n12,450\n+22% YoY");
    let kpi3 = Shape::new(ShapeType::RoundedRectangle, 4700000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("NPS Score\n\n72\n+8 pts");
    let kpi4 = Shape::new(ShapeType::RoundedRectangle, 6900000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("5B9BD5"))
        .with_text("Retention\n\n94%\n+3% YoY");
    
    // Status indicators
    let status1 = Shape::new(ShapeType::Ellipse, 1800000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    let status2 = Shape::new(ShapeType::Ellipse, 4000000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    let status3 = Shape::new(ShapeType::Ellipse, 6200000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("FFC000"));
    let status4 = Shape::new(ShapeType::Ellipse, 8400000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    
    slides.push(
        SlideContent::new("Executive Dashboard - Q1 2024")
            .add_shape(kpi1)
            .add_shape(kpi2)
            .add_shape(kpi3)
            .add_shape(kpi4)
            .add_shape(status1)
            .add_shape(status2)
            .add_shape(status3)
            .add_shape(status4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 20: Summary Slide (NEW)
    // =========================================================================
    println!("📝 Slide 20: Summary with Speaker Notes");
    
    slides.push(
        SlideContent::new("Summary & Next Steps")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Completed: Research, Design, Initial Development")
            .add_bullet("In Progress: Sprint 3 Development")
            .add_bullet("Next: QA Testing Phase (Q4 2024)")
            .add_bullet("Launch Target: Q1 2025")
            .add_bullet("Key Risks: Resource constraints, Timeline pressure")
            .content_size(24)
            .notes("Speaker Notes:\n\n1. Emphasize the progress made\n2. Highlight key achievements\n3. Address any concerns about timeline\n4. Open for Q&A")
    );

    // =========================================================================
    // SLIDE 21: Bullet Styles (NEW v0.2.1)
    // =========================================================================
    println!("🔢 Slide 21: Bullet Styles (NEW)");
    
    // Numbered list
    slides.push(
        SlideContent::new("Bullet Styles - Numbered List")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .with_bullet_style(BulletStyle::Number)
            .add_bullet("First numbered item")
            .add_bullet("Second numbered item")
            .add_bullet("Third numbered item")
            .add_bullet("Fourth numbered item")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 22: Lettered Lists (NEW v0.2.1)
    // =========================================================================
    println!("🔤 Slide 22: Lettered Lists (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Lettered Lists")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_lettered("Option A - First choice")
            .add_lettered("Option B - Second choice")
            .add_lettered("Option C - Third choice")
            .add_lettered("Option D - Fourth choice")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 23: Roman Numerals (NEW v0.2.1)
    // =========================================================================
    println!("🏛️ Slide 23: Roman Numerals (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Roman Numerals")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .with_bullet_style(BulletStyle::RomanUpper)
            .add_bullet("Chapter I - Introduction")
            .add_bullet("Chapter II - Background")
            .add_bullet("Chapter III - Methodology")
            .add_bullet("Chapter IV - Results")
            .add_bullet("Chapter V - Conclusion")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 24: Custom Bullets (NEW v0.2.1)
    // =========================================================================
    println!("⭐ Slide 24: Custom Bullets (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Custom Characters")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_styled_bullet("Star bullet point", BulletStyle::Custom('★'))
            .add_styled_bullet("Arrow bullet point", BulletStyle::Custom('→'))
            .add_styled_bullet("Check bullet point", BulletStyle::Custom('✓'))
            .add_styled_bullet("Diamond bullet point", BulletStyle::Custom('◆'))
            .add_styled_bullet("Heart bullet point", BulletStyle::Custom('♥'))
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 25: Sub-bullets / Hierarchy (NEW v0.2.1)
    // =========================================================================
    println!("📊 Slide 25: Sub-bullets Hierarchy (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Hierarchical Lists")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Main Topic 1")
            .add_sub_bullet("Supporting detail A")
            .add_sub_bullet("Supporting detail B")
            .add_bullet("Main Topic 2")
            .add_sub_bullet("Supporting detail C")
            .add_sub_bullet("Supporting detail D")
            .add_bullet("Main Topic 3")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 26: Text Enhancements (NEW v0.2.1)
    // =========================================================================
    println!("✏️ Slide 26: Text Enhancements (NEW)");
    
    // Use BulletPoint with formatting
    let strikethrough_bullet = BulletPoint::new("Strikethrough: This text is crossed out").strikethrough();
    let highlight_bullet = BulletPoint::new("Highlight: Yellow background for emphasis").highlight("FFFF00");
    let subscript_bullet = BulletPoint::new("Subscript: H₂O - for chemical formulas").subscript();
    let superscript_bullet = BulletPoint::new("Superscript: x² - for math expressions").superscript();
    let bold_colored = BulletPoint::new("Combined: Bold + Red color").bold().color("FF0000");
    
    let mut text_enhancements_slide = SlideContent::new("Text Enhancements - New Formatting")
        .layout(SlideLayout::TitleAndContent)
        .title_color("1F497D")
        .title_bold(true)
        .content_size(24);
    text_enhancements_slide.bullets.push(strikethrough_bullet);
    text_enhancements_slide.bullets.push(highlight_bullet);
    text_enhancements_slide.bullets.push(subscript_bullet);
    text_enhancements_slide.bullets.push(superscript_bullet);
    text_enhancements_slide.bullets.push(bold_colored);
    
    slides.push(text_enhancements_slide);

    // =========================================================================
    // SLIDE 27: Font Size Presets (NEW v0.2.1)
    // =========================================================================
    println!("🔤 Slide 27: Font Size Presets (NEW)");
    
    // Demonstrate different font sizes per bullet
    let large_bullet = BulletPoint::new(&format!("LARGE: {}pt - Extra large text", font_sizes::LARGE)).font_size(font_sizes::LARGE);
    let heading_bullet = BulletPoint::new(&format!("HEADING: {}pt - Section headers", font_sizes::HEADING)).font_size(font_sizes::HEADING);
    let body_bullet = BulletPoint::new(&format!("BODY: {}pt - Regular content", font_sizes::BODY)).font_size(font_sizes::BODY);
    let small_bullet = BulletPoint::new(&format!("SMALL: {}pt - Smaller text", font_sizes::SMALL)).font_size(font_sizes::SMALL);
    let caption_bullet = BulletPoint::new(&format!("CAPTION: {}pt - Captions and notes", font_sizes::CAPTION)).font_size(font_sizes::CAPTION);
    
    let mut font_size_slide = SlideContent::new("Font Size Presets - Each line different size")
        .layout(SlideLayout::TitleAndContent)
        .title_color("1F497D")
        .title_bold(true)
        .title_size(font_sizes::TITLE);
    font_size_slide.bullets.push(large_bullet);
    font_size_slide.bullets.push(heading_bullet);
    font_size_slide.bullets.push(body_bullet);
    font_size_slide.bullets.push(small_bullet);
    font_size_slide.bullets.push(caption_bullet);
    
    slides.push(font_size_slide);

    // =========================================================================
    // SLIDE 28: Theme Colors (NEW v0.2.1)
    // =========================================================================
    println!("🎨 Slide 28: Theme Colors (NEW)");
    
    // Create shapes with theme colors
    let corporate_shape = Shape::new(ShapeType::Rectangle, 500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::CORPORATE.primary))
        .with_text("Corporate");
    
    let modern_shape = Shape::new(ShapeType::Rectangle, 2500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::MODERN.primary))
        .with_text("Modern");
    
    let vibrant_shape = Shape::new(ShapeType::Rectangle, 4500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::VIBRANT.primary))
        .with_text("Vibrant");
    
    let dark_shape = Shape::new(ShapeType::Rectangle, 6500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::DARK.primary))
        .with_text("Dark");
    
    let nature_shape = Shape::new(ShapeType::Rectangle, 500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::NATURE.primary))
        .with_text("Nature");
    
    let tech_shape = Shape::new(ShapeType::Rectangle, 2500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::TECH.primary))
        .with_text("Tech");
    
    let carbon_shape = Shape::new(ShapeType::Rectangle, 4500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::CARBON.primary))
        .with_text("Carbon");
    
    slides.push(
        SlideContent::new("Theme Color Palettes")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_shape(corporate_shape)
            .add_shape(modern_shape)
            .add_shape(vibrant_shape)
            .add_shape(dark_shape)
            .add_shape(nature_shape)
            .add_shape(tech_shape)
            .add_shape(carbon_shape)
    );

    // =========================================================================
    // SLIDE 29: Material & Carbon Design Colors (NEW v0.2.1)
    // =========================================================================
    println!("🌈 Slide 29: Material & Carbon Colors (NEW)");
    
    // Material Design colors
    let material_red = Shape::new(ShapeType::Rectangle, 500000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_RED))
        .with_text("M-Red");
    
    let material_blue = Shape::new(ShapeType::Rectangle, 1900000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_BLUE))
        .with_text("M-Blue");
    
    let material_green = Shape::new(ShapeType::Rectangle, 3300000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_GREEN))
        .with_text("M-Green");
    
    let material_orange = Shape::new(ShapeType::Rectangle, 4700000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_ORANGE))
        .with_text("M-Orange");
    
    let material_purple = Shape::new(ShapeType::Rectangle, 6100000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_PURPLE))
        .with_text("M-Purple");
    
    // Carbon Design colors
    let carbon_blue = Shape::new(ShapeType::Rectangle, 500000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_BLUE_60))
        .with_text("C-Blue");
    
    let carbon_green = Shape::new(ShapeType::Rectangle, 1900000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_GREEN_50))
        .with_text("C-Green");
    
    let carbon_red = Shape::new(ShapeType::Rectangle, 3300000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_RED_60))
        .with_text("C-Red");
    
    let carbon_purple = Shape::new(ShapeType::Rectangle, 4700000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_PURPLE_60))
        .with_text("C-Purple");
    
    let carbon_gray = Shape::new(ShapeType::Rectangle, 6100000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_GRAY_100))
        .with_text("C-Gray");
    
    slides.push(
        SlideContent::new("Material & Carbon Design Colors")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_shape(material_red)
            .add_shape(material_blue)
            .add_shape(material_green)
            .add_shape(material_orange)
            .add_shape(material_purple)
            .add_shape(carbon_blue)
            .add_shape(carbon_green)
            .add_shape(carbon_red)
            .add_shape(carbon_purple)
            .add_shape(carbon_gray)
    );

    // =========================================================================
    // SLIDE 30: Image from Base64 (NEW v0.2.1)
    // =========================================================================
    println!("🖼️ Slide 30: Image from Base64 (NEW)");
    
    // 1x1 red PNG pixel in base64
    let _red_pixel_base64 = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8DwHwAFBQIAX8jx0gAAAABJRU5ErkJggg==";
    
    // Create image from base64 (demonstrating the API)
    let _base64_image = ImageBuilder::from_base64(_red_pixel_base64, 914400, 914400, "PNG")
        .position(4000000, 2500000)
        .build();
    
    slides.push(
        SlideContent::new("Image Loading - New Methods")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Image::new(path) - Load from file path")
            .add_bullet("Image::from_base64(data) - Load from base64 string")
            .add_bullet("Image::from_bytes(data) - Load from raw bytes")
            .add_bullet("ImageBuilder for fluent API configuration")
            .add_bullet("Built-in base64 decoder (no external deps)")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 31: Feature Summary (NEW v0.2.1)
    // =========================================================================
    println!("📋 Slide 31: v0.2.1 Feature Summary (NEW)");
    
    slides.push(
        SlideContent::new("New Features in v0.2.1")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_numbered("BulletStyle: Number, Letter, Roman, Custom")
            .add_numbered("TextFormat: Strikethrough, Highlight")
            .add_numbered("TextFormat: Subscript, Superscript")
            .add_numbered("Font size presets in prelude")
            .add_numbered("Image::from_base64 and from_bytes")
            .add_numbered("Theme color palettes (7 themes)")
            .add_numbered("Material & Carbon Design colors")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 32: Slide Show Settings - Comparison Table (REAL: embedded in presProps.xml)
    // =========================================================================
    println!("🎬 Slide 34: Slide Show Settings (Visual)");

    let show_speaker = SlideShowSettings::new().pen_color(PenColor::red());
    let show_kiosk = SlideShowSettings::kiosk();
    let _show_range = SlideShowSettings::new()
        .show_type(ShowType::Browsed)
        .slide_range(SlideRange::Range { start: 1, end: 10 })
        .without_animation(true);
    let _speaker_xml = show_speaker.to_xml();
    let _kiosk_xml = show_kiosk.to_xml();

    let show_table = TableBuilder::new(vec![2000000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Setting").bold().background_color("1F4E79").text_color("FFFFFF"),
            TableCell::new("Speaker").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Kiosk").bold().background_color("ED7D31").text_color("FFFFFF"),
            TableCell::new("Browsed").bold().background_color("70AD47").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Loop").bold().background_color("D6E4F0"),
            TableCell::new("No"), TableCell::new("Yes").bold().text_color("2E7D32"),
            TableCell::new("No"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Narration").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("No").text_color("C62828"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Animation").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("Yes"),
            TableCell::new("No").text_color("C62828"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Timings").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("Auto"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Slide Range").bold().background_color("D6E4F0"),
            TableCell::new("All"), TableCell::new("All"),
            TableCell::new("1-10"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Pen Color").bold().background_color("D6E4F0"),
            TableCell::new("Red").text_color("FF0000"),
            TableCell::new("Red").text_color("FF0000"),
            TableCell::new("Red").text_color("FF0000"),
        ]))
        .position(300000, 1600000)
        .build();

    // Mode icons
    let icon_speaker = Shape::new(ShapeType::RoundedRectangle, 300000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Speaker: Full control");
    let icon_kiosk = Shape::new(ShapeType::RoundedRectangle, 3100000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Kiosk: Auto-loop");
    let icon_browsed = Shape::new(ShapeType::RoundedRectangle, 5900000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Browsed: Scrollbar");

    slides.push(
        SlideContent::new("Slide Show Settings - Mode Comparison")
            .table(show_table)
            .add_shape(icon_speaker)
            .add_shape(icon_kiosk)
            .add_shape(icon_browsed)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 35: Print Settings - Visual Handout Grid
    // =========================================================================
    println!("🖨️  Slide 35: Print Settings & Handouts (Visual)");

    let print = PrintSettings::new()
        .print_what(PrintWhat::Handouts)
        .color_mode(PrintColorMode::Grayscale)
        .handout_layout(GenHandoutLayout::SlidesPerPage6)
        .frame_slides(true)
        .header("Q1 2025 Strategy Review")
        .footer("Confidential - Internal Use Only")
        .print_date(true)
        .print_page_numbers(true);
    let _prnpr_xml = print.to_prnpr_xml();
    let _handout_xml = print.to_handout_master_xml();

    // Visual: 6-slide handout grid (2 cols x 3 rows)
    let hdr = Shape::new(ShapeType::Rectangle, 300000, 1500000, 4200000, 300000)
        .with_fill(ShapeFill::new("E7E6E6"))
        .with_text("Q1 2025 Strategy Review");
    // Row 1
    let s1 = Shape::new(ShapeType::Rectangle, 400000, 2000000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 1");
    let s2 = Shape::new(ShapeType::Rectangle, 2500000, 2000000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 2");
    // Row 2
    let s3 = Shape::new(ShapeType::Rectangle, 400000, 3200000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 3");
    let s4 = Shape::new(ShapeType::Rectangle, 2500000, 3200000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 4");
    // Row 3
    let s5 = Shape::new(ShapeType::Rectangle, 400000, 4400000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 5");
    let s6 = Shape::new(ShapeType::Rectangle, 2500000, 4400000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 6");
    let ftr = Shape::new(ShapeType::Rectangle, 300000, 5600000, 4200000, 300000)
        .with_fill(ShapeFill::new("E7E6E6"))
        .with_text("Confidential - Internal Use Only");

    // Settings summary table on the right
    let print_table = TableBuilder::new(vec![1800000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Print Settings").bold().background_color("1F4E79").text_color("FFFFFF"),
            TableCell::new("").background_color("1F4E79"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Print What").bold().background_color("D6E4F0"),
            TableCell::new("Handouts"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Color Mode").bold().background_color("D6E4F0"),
            TableCell::new("Grayscale"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Layout").bold().background_color("D6E4F0"),
            TableCell::new("6 slides/page"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Frame Slides").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Date").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Page Numbers").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .position(5000000, 1800000)
        .build();

    slides.push(
        SlideContent::new("Print Handout - 6 Slides Per Page")
            .table(print_table)
            .add_shape(hdr)
            .add_shape(s1).add_shape(s2)
            .add_shape(s3).add_shape(s4)
            .add_shape(s5).add_shape(s6)
            .add_shape(ftr)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 36: Advanced Table Merging - Actual Merged Table
    // =========================================================================
    println!("📊 Slide 36: Advanced Table Merging (Visual)");

    // Use TableMergeMap to compute states, then build a visual table
    let mut merge_map = TableMergeMap::new(5, 4);
    merge_map.merge_cells(0, 0, 1, 4).unwrap(); // Title row spans all 4 cols
    merge_map.merge_cells(1, 0, 2, 1).unwrap(); // "Products" spans 2 rows
    merge_map.merge_cells(3, 0, 2, 1).unwrap(); // "Services" spans 2 rows

    // Show merge state labels
    let state_00 = merge_map.cell_state(0, 0); // Anchor gridSpan=4
    let state_01 = merge_map.cell_state(0, 1); // HMerge
    let state_10 = merge_map.cell_state(1, 0); // Anchor rowSpan=2
    let state_20 = merge_map.cell_state(2, 0); // VMerge
    println!("   ├── (0,0): {}", state_00.to_xml_attrs().trim());
    println!("   ├── (0,1): {}", state_01.to_xml_attrs().trim());
    println!("   ├── (1,0): {}", state_10.to_xml_attrs().trim());
    println!("   └── (2,0): {}", state_20.to_xml_attrs().trim());

    // Build the table with REAL merge attributes (gridSpan, rowSpan, hMerge, vMerge)
    let merge_table = TableBuilder::new(vec![1500000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2025 Revenue Report").bold().background_color("1F4E79").text_color("FFFFFF").grid_span(4),
            TableCell::new("").background_color("1F4E79").h_merge(),
            TableCell::new("").background_color("1F4E79").h_merge(),
            TableCell::new("").background_color("1F4E79").h_merge(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Products").bold().background_color("BDD7EE").text_color("1F497D").row_span(2),
            TableCell::new("Hardware").background_color("E2EFDA"),
            TableCell::new("$450,000").text_color("2E7D32").align_right(),
            TableCell::new("+12%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("").background_color("BDD7EE").v_merge(),
            TableCell::new("Software").background_color("E2EFDA"),
            TableCell::new("$680,000").text_color("2E7D32").align_right(),
            TableCell::new("+25%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Services").bold().background_color("FCE4D6").text_color("C65911").row_span(2),
            TableCell::new("Consulting").background_color("FFF2CC"),
            TableCell::new("$320,000").text_color("2E7D32").align_right(),
            TableCell::new("+8%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("").background_color("FCE4D6").v_merge(),
            TableCell::new("Support").background_color("FFF2CC"),
            TableCell::new("$190,000").text_color("2E7D32").align_right(),
            TableCell::new("+5%").bold().text_color("2E7D32").align_right(),
        ]))
        .position(300000, 1600000)
        .build();

    // Legend shapes
    let legend_anchor = Shape::new(ShapeType::RoundedRectangle, 300000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Anchor (gridSpan/rowSpan)");
    let legend_hmerge = Shape::new(ShapeType::RoundedRectangle, 2500000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("hMerge (col covered)");
    let legend_vmerge = Shape::new(ShapeType::RoundedRectangle, 4700000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("vMerge (row covered)");
    let legend_normal = Shape::new(ShapeType::RoundedRectangle, 6900000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"))
        .with_text("Normal (no merge)");

    slides.push(
        SlideContent::new("Advanced Table Merging - Merged Cells")
            .table(merge_table)
            .add_shape(legend_anchor)
            .add_shape(legend_hmerge)
            .add_shape(legend_vmerge)
            .add_shape(legend_normal)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // Build PresentationSettings with all advanced features
    // =========================================================================
    println!("\n⚙️  Building Presentation Settings...");

    // Slide show settings (embedded in presProps.xml as <p:showPr>)
    let show_settings = SlideShowSettings::new()
        .show_type(ShowType::Speaker)
        .pen_color(PenColor::red())
        .use_timings(true);
    println!("   ├── Slide Show: Speaker mode, red pen, timings enabled");
    println!("   │   └── XML: {} bytes", show_settings.to_xml().len());

    // Print settings (embedded in presProps.xml as <p:prnPr>)
    let print_settings = PrintSettings::new()
        .print_what(PrintWhat::Handouts)
        .color_mode(PrintColorMode::Grayscale)
        .handout_layout(GenHandoutLayout::SlidesPerPage6)
        .frame_slides(true)
        .header("Q1 2025 Strategy Review")
        .footer("Confidential - Internal Use Only")
        .print_date(true)
        .print_page_numbers(true);
    println!("   └── Print: Handouts, 6/page, grayscale, framed");
    println!("       └── XML: {} bytes", print_settings.to_prnpr_xml().len());

    let pres_settings = PresentationSettings::new()
        .slide_show(show_settings)
        .print(print_settings);
    println!("   All settings configured → presProps.xml");

    // =========================================================================
    // Generate PPTX with real integrated features
    // =========================================================================
    println!("\n📦 Generating PPTX with integrated features...");
    let pptx_data = create_pptx_with_settings(
        "PPTX-RS Element Showcase",
        slides.clone(),
        Some(pres_settings),
    )?;
    fs::write("comprehensive_demo.pptx", &pptx_data)?;
    println!("   ✓ Created comprehensive_demo.pptx ({} slides, {} bytes)", 
             slides.len(), pptx_data.len());

    // =========================================================================
    // Package Analysis - Demonstrate Reading
    // =========================================================================
    println!("\n📖 Package Analysis (Read Capability):");
    
    let package = Package::open("comprehensive_demo.pptx")?;
    let paths = package.part_paths();
    
    let slide_count = paths.iter()
        .filter(|p| p.starts_with("ppt/slides/slide") && p.ends_with(".xml"))
        .count();
    
    println!("   ├── Total parts: {}", package.part_count());
    println!("   ├── Slides: {}", slide_count);
    println!("   └── Package opened and analyzed successfully");

    // =========================================================================
    // NEW: Parts API Demonstration
    // =========================================================================
    println!("\n🧩 Parts API Demonstration:");
    
    // SlideLayoutPart - 11 layout types
    println!("   ┌── SlideLayoutPart (11 layout types):");
    let layouts = [
        LayoutType::Title,
        LayoutType::TitleAndContent,
        LayoutType::SectionHeader,
        LayoutType::TwoContent,
        LayoutType::Comparison,
        LayoutType::TitleOnly,
        LayoutType::Blank,
        LayoutType::ContentWithCaption,
        LayoutType::PictureWithCaption,
        LayoutType::TitleAndVerticalText,
        LayoutType::VerticalTitleAndText,
    ];
    for (i, layout_type) in layouts.iter().enumerate() {
        let layout = SlideLayoutPart::new(i + 1, *layout_type);
        if i < 3 {
            println!("   │   ├── {}: {} ({})", i + 1, layout_type.name(), layout.path());
        }
    }
    println!("   │   └── ... and {} more layout types", layouts.len() - 3);
    
    // SlideMasterPart
    println!("   ├── SlideMasterPart:");
    let mut master = SlideMasterPart::new(1);
    master.set_name("Custom Master");
    master.add_layout_rel_id("rId2");
    master.add_layout_rel_id("rId3");
    println!("   │   ├── Name: {}", master.name());
    println!("   │   ├── Path: {}", master.path());
    println!("   │   └── Layouts: {} linked", master.layout_rel_ids().len());
    
    // ThemePart - Colors and Fonts
    println!("   ├── ThemePart (colors & fonts):");
    let mut theme = ThemePart::new(1);
    theme.set_name("Corporate Theme");
    theme.set_major_font("Arial");
    theme.set_minor_font("Calibri");
    theme.set_color("accent1", "FF5733");
    theme.set_color("accent2", "33FF57");
    let theme_xml = theme.to_xml()?;
    println!("   │   ├── Name: {}", theme.name());
    println!("   │   ├── Major Font: Arial");
    println!("   │   ├── Minor Font: Calibri");
    println!("   │   └── XML size: {} bytes", theme_xml.len());
    
    // NotesSlidePart - Speaker notes
    println!("   ├── NotesSlidePart (speaker notes):");
    let notes = NotesSlidePart::with_text(1, "Remember to:\n- Introduce yourself\n- Explain the agenda\n- Ask for questions");
    let notes_xml = notes.to_xml()?;
    println!("   │   ├── Path: {}", notes.path());
    println!("   │   ├── Text: \"{}...\"", &notes.notes_text()[..20.min(notes.notes_text().len())]);
    println!("   │   └── XML size: {} bytes", notes_xml.len());
    
    // AppPropertiesPart - Application metadata
    println!("   ├── AppPropertiesPart (metadata):");
    let mut app_props = AppPropertiesPart::new();
    app_props.set_company("Acme Corporation");
    app_props.set_slides(slides.len() as u32);
    let app_xml = app_props.to_xml()?;
    println!("   │   ├── Company: Acme Corporation");
    println!("   │   ├── Slides: {}", slides.len());
    println!("   │   └── XML size: {} bytes", app_xml.len());
    
    // MediaPart - Video/Audio formats
    println!("   ├── MediaPart (10 media formats):");
    println!("   │   ├── Video: mp4, webm, avi, wmv, mov");
    println!("   │   ├── Audio: mp3, wav, wma, m4a, ogg");
    let sample_media = MediaPart::new(1, MediaFormat::Mp4, vec![0; 100]);
    println!("   │   └── Sample: {} ({})", sample_media.path(), sample_media.format().mime_type());
    
    // TablePart - Table with formatting
    println!("   ├── TablePart (cell formatting):");
    let table_part = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Header 1").bold().background("4472C4"),
            TableCellPart::new("Header 2").bold().background("4472C4"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Data 1").color("333333"),
            TableCellPart::new("Data 2").italic(),
        ]))
        .position(EMU_PER_INCH, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 6, EMU_PER_INCH * 2);
    let table_xml = table_part.to_slide_xml(10);
    println!("   │   ├── Rows: {}", table_part.rows.len());
    println!("   │   ├── Features: bold, italic, colors, backgrounds");
    println!("   │   └── XML size: {} bytes", table_xml.len());
    
    // ContentTypesPart
    println!("   └── ContentTypesPart:");
    let mut content_types = ContentTypesPart::new();
    content_types.add_presentation();
    content_types.add_slide(1);
    content_types.add_slide_layout(1);
    content_types.add_slide_master(1);
    content_types.add_theme(1);
    content_types.add_core_properties();
    content_types.add_app_properties();
    let ct_xml = content_types.to_xml()?;
    println!("       ├── Path: {}", content_types.path());
    println!("       └── XML size: {} bytes", ct_xml.len());

    // =========================================================================
    // NEW: Elements API Demonstration
    // =========================================================================
    println!("\n🎨 Elements API Demonstration:");
    
    // Color types
    println!("   ┌── Color Types:");
    let rgb = RgbColor::new(255, 87, 51);
    let rgb_hex = RgbColor::from_hex("#4472C4").unwrap();
    let scheme = SchemeColor::Accent1;
    let color = Color::rgb(100, 149, 237);
    println!("   │   ├── RgbColor::new(255, 87, 51) → {}", rgb.to_hex());
    println!("   │   ├── RgbColor::from_hex(\"#4472C4\") → {}", rgb_hex.to_hex());
    println!("   │   ├── SchemeColor::Accent1 → {}", scheme.as_str());
    println!("   │   └── Color::rgb(100, 149, 237) → XML: {}", color.to_xml().chars().take(30).collect::<String>());
    
    // Position and Size
    println!("   ├── Position & Size (EMU units):");
    let pos = Position::from_inches(1.0, 2.0);
    let size = Size::from_inches(4.0, 3.0);
    println!("   │   ├── Position::from_inches(1.0, 2.0) → x={}, y={}", pos.x, pos.y);
    println!("   │   ├── Size::from_inches(4.0, 3.0) → w={}, h={}", size.width, size.height);
    println!("   │   └── EMU_PER_INCH = {}", EMU_PER_INCH);
    
    // Transform
    println!("   └── Transform (position + size + rotation):");
    let transform = Transform::from_inches(1.0, 1.5, 3.0, 2.0).with_rotation(45.0);
    let transform_xml = transform.to_xml();
    println!("       ├── Transform::from_inches(1.0, 1.5, 3.0, 2.0)");
    println!("       ├── .with_rotation(45.0)");
    println!("       └── XML: {}...", &transform_xml[..50.min(transform_xml.len())]);

    // =========================================================================
    // NEW: Advanced Features Demonstration
    // =========================================================================
    println!("\n🚀 Advanced Features Demonstration:");

    // -------------------------------------------------------------------------
    // Complex Table Examples
    // -------------------------------------------------------------------------
    println!("   ┌── Complex Table Examples:");
    
    // Example 1: Financial Report Table
    println!("   │   ┌── Financial Report Table (5x4 with formatting):");
    let financial_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Q1 2024 Financial Summary")
                .col_span(4)
                .bold()
                .center()
                .background("1F4E79")
                .color("FFFFFF")
                .font_size(14)
                .font("Arial Black"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Category").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Revenue").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Expenses").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Profit").bold().center().background("2E75B6").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Product Sales").align(HorizontalAlign::Left),
            TableCellPart::new("$1,250,000").align(HorizontalAlign::Right).color("2E7D32"),
            TableCellPart::new("$450,000").align(HorizontalAlign::Right).color("C62828"),
            TableCellPart::new("$800,000").align(HorizontalAlign::Right).bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Services").align(HorizontalAlign::Left),
            TableCellPart::new("$890,000").align(HorizontalAlign::Right).color("2E7D32"),
            TableCellPart::new("$320,000").align(HorizontalAlign::Right).color("C62828"),
            TableCellPart::new("$570,000").align(HorizontalAlign::Right).bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Total").bold().background("E7E6E6"),
            TableCellPart::new("$2,140,000").bold().align(HorizontalAlign::Right).background("E7E6E6"),
            TableCellPart::new("$770,000").bold().align(HorizontalAlign::Right).background("E7E6E6"),
            TableCellPart::new("$1,370,000").bold().align(HorizontalAlign::Right).background("C6EFCE").color("006100"),
        ]))
        .position(EMU_PER_INCH / 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 8, EMU_PER_INCH * 3);
    let fin_xml = financial_table.to_slide_xml(100);
    println!("   │   │   ├── Merged header spanning 4 columns");
    println!("   │   │   ├── Color-coded values (green=positive, red=negative)");
    println!("   │   │   ├── Custom fonts and sizes");
    println!("   │   │   └── XML: {} bytes", fin_xml.len());

    // Example 2: Comparison Matrix
    println!("   │   ├── Comparison Matrix (features vs products):");
    let matrix_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Feature").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Basic").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Pro").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Enterprise").bold().center().background("4472C4").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Storage").align(HorizontalAlign::Left),
            TableCellPart::new("5 GB").center(),
            TableCellPart::new("50 GB").center(),
            TableCellPart::new("Unlimited").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Users").align(HorizontalAlign::Left),
            TableCellPart::new("1").center(),
            TableCellPart::new("10").center(),
            TableCellPart::new("Unlimited").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Support").align(HorizontalAlign::Left),
            TableCellPart::new("Email").center(),
            TableCellPart::new("24/7 Chat").center(),
            TableCellPart::new("Dedicated").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Price/mo").bold().background("F2F2F2"),
            TableCellPart::new("$9").center().bold().background("F2F2F2"),
            TableCellPart::new("$29").center().bold().background("F2F2F2"),
            TableCellPart::new("$99").center().bold().background("F2F2F2"),
        ]));
    println!("   │   │   └── 5x4 matrix with alternating styles");

    // Example 3: Schedule/Timeline Table
    println!("   │   └── Schedule Table (with row spans):");
    let schedule_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Time").bold().center().background("70AD47").color("FFFFFF"),
            TableCellPart::new("Monday").bold().center().background("70AD47").color("FFFFFF"),
            TableCellPart::new("Tuesday").bold().center().background("70AD47").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("9:00 AM").center().background("E2EFDA"),
            TableCellPart::new("Team Standup").center().row_span(2).valign(VerticalAlign::Middle).background("BDD7EE"),
            TableCellPart::new("Code Review").center(),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("10:00 AM").center().background("E2EFDA"),
            TableCellPart::merged(),
            TableCellPart::new("Sprint Planning").center().background("FCE4D6"),
        ]));
    println!("   │       └── Row spans for multi-hour events");

    // -------------------------------------------------------------------------
    // Complex Animation Sequences
    // -------------------------------------------------------------------------
    println!("   ├── Complex Animation Sequences:");
    
    // Sequence 1: Title entrance with staggered content
    println!("   │   ┌── Staggered Entrance Sequence:");
    let title_anim = Animation::new(2, AnimationEffect::Fade)
        .trigger(AnimationTrigger::OnClick)
        .duration(500);
    let content1 = Animation::new(3, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(200);
    let content2 = Animation::new(4, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(100);
    let content3 = Animation::new(5, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(100);
    let staggered = SlideAnimations::new()
        .add(title_anim)
        .add(content1)
        .add(content2)
        .add(content3)
        .transition(SlideTransition::new(TransitionEffect::Push).direction(AnimationDirection::Left).duration(750));
    let staggered_xml = staggered.to_timing_xml()?;
    println!("   │   │   ├── Title: Fade on click");
    println!("   │   │   ├── Content 1-3: FlyIn with 100ms stagger");
    println!("   │   │   ├── Transition: Push from left (750ms)");
    println!("   │   │   └── XML: {} bytes", staggered_xml.len());

    // Sequence 2: Emphasis and exit
    println!("   │   ├── Emphasis + Exit Sequence:");
    let emphasis = Animation::new(6, AnimationEffect::Pulse)
        .trigger(AnimationTrigger::OnClick)
        .duration(1000)
        .repeat(3);
    let exit = Animation::new(6, AnimationEffect::FadeOut)
        .trigger(AnimationTrigger::AfterPrevious)
        .duration(500);
    let emphasis_seq = SlideAnimations::new()
        .add(emphasis)
        .add(exit);
    println!("   │   │   ├── Pulse 3x on click, then fade out");
    println!("   │   │   └── Same shape, sequential effects");

    // Sequence 3: Motion path
    println!("   │   └── Motion Path Animation:");
    let motion = Animation::new(7, AnimationEffect::Lines)
        .trigger(AnimationTrigger::OnClick)
        .duration(2000);
    println!("   │       └── Custom path: Lines, Arcs, Turns, Loops");

    // -------------------------------------------------------------------------
    // SmartArt Combinations
    // -------------------------------------------------------------------------
    println!("   ├── SmartArt Layout Examples:");
    
    // Process flow
    println!("   │   ┌── Process Flow (5 steps):");
    let process = SmartArtPart::new(1, SmartArtLayout::BasicProcess)
        .add_items(vec!["Research", "Design", "Develop", "Test", "Deploy"])
        .position(EMU_PER_INCH / 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 8, EMU_PER_INCH * 2);
    println!("   │   │   └── {} nodes in horizontal flow", process.nodes().len());

    // Organization chart
    println!("   │   ├── Organization Chart:");
    let org = SmartArtPart::new(2, SmartArtLayout::OrgChart)
        .add_items(vec!["CEO", "CTO", "CFO", "VP Engineering", "VP Sales"]);
    println!("   │   │   └── Hierarchical structure with {} positions", org.nodes().len());

    // Cycle diagram
    println!("   │   ├── Cycle Diagram:");
    let cycle = SmartArtPart::new(3, SmartArtLayout::BasicCycle)
        .add_items(vec!["Plan", "Do", "Check", "Act"]);
    println!("   │   │   └── PDCA cycle with {} phases", cycle.nodes().len());

    // Venn diagram
    println!("   │   ├── Venn Diagram:");
    let venn = SmartArtPart::new(4, SmartArtLayout::BasicVenn)
        .add_items(vec!["Skills", "Passion", "Market Need"]);
    println!("   │   │   └── 3-circle Venn for Ikigai concept");

    // Pyramid
    println!("   │   └── Pyramid:");
    let pyramid = SmartArtPart::new(5, SmartArtLayout::BasicPyramid)
        .add_items(vec!["Self-Actualization", "Esteem", "Love/Belonging", "Safety", "Physiological"]);
    println!("   │       └── Maslow's hierarchy with {} levels", pyramid.nodes().len());

    // -------------------------------------------------------------------------
    // 3D Model Configurations
    // -------------------------------------------------------------------------
    println!("   ├── 3D Model Configurations:");
    
    // Product showcase
    println!("   │   ┌── Product Showcase:");
    let product_3d = Model3DPart::new(1, Model3DFormat::Glb, vec![0; 100])
        .camera(CameraPreset::IsometricTopUp)
        .rotation(0.0, 45.0, 0.0)
        .zoom(1.2)
        .position(EMU_PER_INCH * 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 4, EMU_PER_INCH * 4);
    println!("   │   │   ├── Camera: Isometric top-up view");
    println!("   │   │   ├── Rotation: 45° Y-axis for best angle");
    println!("   │   │   └── Zoom: 1.2x for detail");

    // Architectural model
    println!("   │   ├── Architectural Model:");
    let arch_3d = Model3DPart::new(2, Model3DFormat::Gltf, vec![0; 100])
        .camera(CameraPreset::Front)
        .rotation(15.0, -30.0, 0.0)
        .ambient_light("FFFFCC");
    println!("   │   │   ├── Camera: Front view with tilt");
    println!("   │   │   └── Ambient: Warm lighting (FFFFCC)");

    // Technical diagram
    println!("   │   └── Technical Diagram:");
    let tech_3d = Model3DPart::new(3, Model3DFormat::Obj, vec![0; 100])
        .camera(CameraPreset::IsometricOffAxis1Top)
        .rotation(0.0, 0.0, 0.0);
    println!("   │       └── Camera: Off-axis isometric for exploded view");

    // -------------------------------------------------------------------------
    // Theme + Master + Layout Combination
    // -------------------------------------------------------------------------
    println!("   ├── Theme + Master + Layout Integration:");
    
    // Corporate theme
    let mut corp_theme = ThemePart::new(1);
    corp_theme.set_name("Corporate Blue");
    corp_theme.set_major_font("Segoe UI");
    corp_theme.set_minor_font("Segoe UI Light");
    corp_theme.set_color("dk1", "000000");
    corp_theme.set_color("lt1", "FFFFFF");
    corp_theme.set_color("dk2", "1F497D");
    corp_theme.set_color("lt2", "EEECE1");
    corp_theme.set_color("accent1", "4472C4");
    corp_theme.set_color("accent2", "ED7D31");
    corp_theme.set_color("accent3", "A5A5A5");
    corp_theme.set_color("accent4", "FFC000");
    corp_theme.set_color("accent5", "5B9BD5");
    corp_theme.set_color("accent6", "70AD47");
    let theme_xml = corp_theme.to_xml()?;
    println!("   │   ├── Theme: Corporate Blue");
    println!("   │   │   ├── Fonts: Segoe UI / Segoe UI Light");
    println!("   │   │   ├── 12 color slots defined");
    println!("   │   │   └── XML: {} bytes", theme_xml.len());

    // Master with multiple layouts
    let mut corp_master = SlideMasterPart::new(1);
    corp_master.set_name("Corporate Master");
    corp_master.add_layout_rel_id("rId2"); // Title
    corp_master.add_layout_rel_id("rId3"); // Title + Content
    corp_master.add_layout_rel_id("rId4"); // Section Header
    corp_master.add_layout_rel_id("rId5"); // Two Content
    corp_master.add_layout_rel_id("rId6"); // Comparison
    corp_master.add_layout_rel_id("rId7"); // Title Only
    corp_master.add_layout_rel_id("rId8"); // Blank
    println!("   │   └── Master: {} with {} layouts linked", corp_master.name(), corp_master.layout_rel_ids().len());

    // -------------------------------------------------------------------------
    // VBA + Custom XML Integration
    // -------------------------------------------------------------------------
    println!("   ├── VBA + Custom XML Integration:");
    
    // VBA with multiple modules
    let vba_project = VbaProjectPart::new()
        .add_module(VbaModule::new("AutoRun", r#"
Sub Auto_Open()
    MsgBox "Welcome to the presentation!"
End Sub

Sub NavigateToSlide(slideNum As Integer)
    SlideShowWindows(1).View.GotoSlide slideNum
End Sub
"#))
        .add_module(VbaModule::new("DataHelpers", r#"
Function GetCustomData(key As String) As String
    ' Read from Custom XML part
    GetCustomData = ActivePresentation.CustomXMLParts(1).SelectSingleNode("//" & key).Text
End Function
"#))
        .add_module(VbaModule::class("SlideController", r#"
Private currentSlide As Integer

Public Sub NextSlide()
    currentSlide = currentSlide + 1
    NavigateToSlide currentSlide
End Sub
"#));
    println!("   │   ├── VBA Project:");
    println!("   │   │   ├── AutoRun: Auto_Open, NavigateToSlide");
    println!("   │   │   ├── DataHelpers: GetCustomData (reads Custom XML)");
    println!("   │   │   └── SlideController: Class for navigation");

    // Custom XML with structured data
    let app_config = CustomXmlPart::new(1, "presentationConfig")
        .namespace("http://company.com/pptx/config")
        .property("version", "2.1.0")
        .property("author", "Demo User")
        .property("department", "Engineering")
        .property("confidentiality", "Internal")
        .property("lastModified", "2024-01-15T10:30:00Z");
    let config_xml = app_config.to_xml()?;
    println!("   │   └── Custom XML:");
    println!("   │       ├── Namespace: http://company.com/pptx/config");
    println!("   │       ├── Properties: version, author, department, etc.");
    println!("   │       └── XML: {} bytes", config_xml.len());

    // -------------------------------------------------------------------------
    // Embedded Fonts with Variants
    // -------------------------------------------------------------------------
    println!("   ├── Embedded Font Collection:");
    let mut font_collection = EmbeddedFontCollection::new();
    font_collection.add("Corporate Sans", vec![0; 1000]);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::Bold);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::Italic);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::BoldItalic);
    font_collection.add("Code Mono", vec![0; 800]);
    let fonts_xml = font_collection.to_xml();
    println!("   │   ├── Corporate Sans: Regular, Bold, Italic, BoldItalic");
    println!("   │   ├── Code Mono: Regular");
    println!("   │   ├── Total: {} font files", font_collection.len());
    println!("   │   └── XML: {} bytes", fonts_xml.len());

    // -------------------------------------------------------------------------
    // Handout with Full Configuration
    // -------------------------------------------------------------------------
    println!("   └── Handout Master Configuration:");
    let handout = HandoutMasterPart::new()
        .layout(HandoutLayout::SlidesPerPage6)
        .header("Q1 2024 Strategy Review")
        .footer("Confidential - Internal Use Only");
    let handout_xml = handout.to_xml()?;
    println!("       ├── Layout: 6 slides per page");
    println!("       ├── Header: Q1 2024 Strategy Review");
    println!("       ├── Footer: Confidential - Internal Use Only");
    println!("       └── XML: {} bytes", handout_xml.len());

    // =========================================================================
    // Summary
    // =========================================================================
    println!("\n╔══════════════════════════════════════════════════════════════╗");
    println!("║                    Element Coverage Summary                   ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  LAYOUTS (6 types):                                          ║");
    println!("║    ✓ CenteredTitle    ✓ TitleOnly      ✓ TitleAndContent     ║");
    println!("║    ✓ TitleAndBigContent  ✓ TwoColumn   ✓ Blank               ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  TEXT FORMATTING:                                            ║");
    println!("║    ✓ Bold            ✓ Italic         ✓ Underline            ║");
    println!("║    ✓ Font Size       ✓ Font Color     ✓ Title/Content styles ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  TABLES:                                                     ║");
    println!("║    ✓ Multiple rows/columns  ✓ Bold cells  ✓ Background colors║");
    println!("║    ✓ Header styling         ✓ Position control               ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  CHARTS:                                                     ║");
    println!("║    ✓ Bar Chart       ✓ Line Chart     ✓ Pie Chart            ║");
    println!("║    ✓ Multiple series ✓ Categories                            ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  SHAPES:                                                     ║");
    println!("║    ✓ Rectangle       ✓ Ellipse        ✓ RoundedRectangle     ║");
    println!("║    ✓ Triangle        ✓ Diamond        ✓ Color fills          ║");
    println!("║    ✓ Gradient fills  ✓ Transparency   ✓ Text in shapes       ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  CONNECTORS (NEW):                                           ║");
    println!("║    ✓ Straight        ✓ Elbow          ✓ Curved               ║");
    println!("║    ✓ Arrow types     ✓ Dash styles    ✓ Line colors/widths   ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  IMAGES:                                                     ║");
    println!("║    ✓ Image placeholders  ✓ Position   ✓ Dimensions           ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  PACKAGE:                                                    ║");
    println!("║    ✓ Create PPTX     ✓ Read PPTX      ✓ Analyze contents     ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  PARTS API (NEW):                                            ║");
    println!("║    ✓ SlideLayoutPart (11 types)  ✓ SlideMasterPart           ║");
    println!("║    ✓ ThemePart (colors/fonts)    ✓ NotesSlidePart            ║");
    println!("║    ✓ AppPropertiesPart           ✓ MediaPart (10 formats)    ║");
    println!("║    ✓ TablePart (cell formatting) ✓ ContentTypesPart          ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  ELEMENTS API:                                               ║");
    println!("║    ✓ RgbColor        ✓ SchemeColor    ✓ Color enum           ║");
    println!("║    ✓ Position        ✓ Size           ✓ Transform            ║");
    println!("║    ✓ EMU conversions (inches, cm, mm, pt)                    ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  ADVANCED FEATURES (NEW):                                    ║");
    println!("║    ✓ Animation (50+ effects)  ✓ Transitions (27 types)       ║");
    println!("║    ✓ SmartArt (25 layouts)    ✓ 3D Models (GLB/GLTF/OBJ)     ║");
    println!("║    ✓ VBA Macros (.pptm)       ✓ Embedded Fonts               ║");
    println!("║    ✓ Custom XML               ✓ Handout Master               ║");
    println!("║    ✓ Table borders/alignment  ✓ Merged cells                 ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  Output: comprehensive_demo.pptx ({} slides, {} KB)         ║", 
             slides.len(), pptx_data.len() / 1024);
    println!("╚══════════════════════════════════════════════════════════════╝");

    Ok(())
}

pub fn content_underline(self, underline: bool) -> Self

Examples found in repository

examples/text_styling_complete.rs (line 61)

fn create_italic_underline_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Italic Text")
            .title_italic(true)
            .add_bullet("This is italic content")
            .add_bullet("More italic text here"),
        SlideContent::new("Underlined Text")
            .title_underline(true)
            .content_underline(true)
            .add_bullet("Underlined bullet point 1")
            .add_bullet("Underlined bullet point 2"),
        SlideContent::new("Combined Effects")
            .title_italic(true)
            .title_underline(true)
            .content_italic(true)
            .add_bullet("Italic and underlined content")
            .add_bullet("Multiple effects combined"),
    ];

    let pptx_data = create_pptx_with_content("Italic and Underline", slides)?;
    fs::write("examples/output/italic_underline.pptx", pptx_data)?;
    Ok(())
}

fn create_colored_text_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Red Title")
            .title_color("FF0000")
            .add_bullet("Red title text")
            .add_bullet("Regular content"),
        SlideContent::new("Blue Content")
            .content_color("0000FF")
            .add_bullet("Blue bullet point 1")
            .add_bullet("Blue bullet point 2")
            .add_bullet("Blue bullet point 3"),
        SlideContent::new("Green Title & Content")
            .title_color("00AA00")
            .content_color("00AA00")
            .add_bullet("Green title and content")
            .add_bullet("All text is green"),
        SlideContent::new("Purple Accent")
            .title_color("9933FF")
            .add_bullet("Purple title")
            .add_bullet("Regular content"),
    ];

    let pptx_data = create_pptx_with_content("Colored Text", slides)?;
    fs::write("examples/output/colored_text.pptx", pptx_data)?;
    Ok(())
}

fn create_combined_styling_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Bold & Italic & Red")
            .title_bold(true)
            .title_italic(true)
            .title_color("FF0000")
            .title_size(52)
            .add_bullet("Regular content"),
        SlideContent::new("Underlined Blue Content")
            .content_underline(true)
            .content_color("0000FF")
            .content_bold(true)
            .add_bullet("Bold, underlined, blue bullet")
            .add_bullet("Multiple effects applied"),
        SlideContent::new("Mixed Effects")
            .title_italic(true)
            .title_color("FF6600")
            .content_bold(true)
            .content_underline(true)
            .content_color("0066FF")
            .add_bullet("Title: italic, orange")
            .add_bullet("Content: bold, underlined, blue"),
        SlideContent::new("Professional Look")
            .title_bold(true)
            .title_size(48)
            .title_color("003366")
            .content_size(24)
            .add_bullet("Clean, professional styling")
            .add_bullet("Dark blue title with bold")
            .add_bullet("Larger content text"),
    ];

    let pptx_data = create_pptx_with_content("Combined Styling", slides)?;
    fs::write("examples/output/combined_styling.pptx", pptx_data)?;
    Ok(())
}

fn create_professional_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Company Presentation")
            .title_bold(true)
            .title_size(56)
            .title_color("003366")
            .content_size(32)
            .add_bullet("2025 Annual Review"),
        SlideContent::new("Key Highlights")
            .title_bold(true)
            .title_color("003366")
            .content_bold(true)
            .content_color("0066CC")
            .add_bullet("Revenue growth: +25%")
            .add_bullet("Market expansion: 3 new regions")
            .add_bullet("Team growth: +50 employees"),
        SlideContent::new("Strategic Initiatives")
            .title_italic(true)
            .title_color("FF6600")
            .content_underline(true)
            .add_bullet("Digital transformation")
            .add_bullet("Customer experience improvement")
            .add_bullet("Sustainability focus"),
        SlideContent::new("Q1 2025 Goals")
            .title_bold(true)
            .title_underline(true)
            .title_color("003366")
            .content_bold(true)
            .add_bullet("Launch new product line")
            .add_bullet("Expand to 5 new markets")
            .add_bullet("Achieve 30% revenue growth"),
        SlideContent::new("Thank You")
            .title_bold(true)
            .title_size(60)
            .title_color("003366")
            .content_italic(true)
            .content_size(28)
            .add_bullet("Questions & Discussion"),
    ];

    let pptx_data = create_pptx_with_content("Professional Presentation", slides)?;
    fs::write("examples/output/professional.pptx", pptx_data)?;
    Ok(())
}

examples/comprehensive_demo.rs (line 119)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    println!("╔══════════════════════════════════════════════════════════════╗");
    println!("║       PPTX-RS Element Showcase - Complete Coverage           ║");
    println!("╚══════════════════════════════════════════════════════════════╝\n");

    let mut slides = Vec::new();

    // =========================================================================
    // SLIDE 1: CenteredTitle Layout + Title Formatting
    // =========================================================================
    println!("📐 Slide 1: CenteredTitle Layout + Title Formatting");
    slides.push(
        SlideContent::new("PPTX-RS Element Showcase")
            .layout(SlideLayout::CenteredTitle)
            .title_size(54)
            .title_bold(true)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 2: TitleOnly Layout
    // =========================================================================
    println!("📐 Slide 2: TitleOnly Layout");
    slides.push(
        SlideContent::new("Section: Slide Layouts")
            .layout(SlideLayout::TitleOnly)
            .title_size(48)
            .title_bold(true)
            .title_color("C0504D")
    );

    // =========================================================================
    // SLIDE 3: TitleAndContent Layout + All Text Formatting
    // =========================================================================
    println!("📝 Slide 3: TitleAndContent + Text Formatting");
    slides.push(
        SlideContent::new("Text Formatting Options")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .title_italic(true)
            .title_underline(true)
            .title_size(44)
            .add_bullet("Normal text (default)")
            .add_bullet("Bold content text")
            .add_bullet("Italic content text")
            .add_bullet("Underlined content")
            .add_bullet("Custom font size (28pt)")
            .add_bullet("Custom color (#4F81BD)")
            .content_bold(true)
            .content_italic(true)
            .content_underline(true)
            .content_size(28)
            .content_color("4F81BD")
    );

    // =========================================================================
    // SLIDE 4: TitleAndBigContent Layout
    // =========================================================================
    println!("📐 Slide 4: TitleAndBigContent Layout");
    slides.push(
        SlideContent::new("Key Highlights")
            .layout(SlideLayout::TitleAndBigContent)
            .title_color("1F497D")
            .add_bullet("Large content area for emphasis")
            .add_bullet("Perfect for key messages")
            .add_bullet("Smaller title, bigger content")
            .content_bold(true)
            .content_size(32)
    );

    // =========================================================================
    // SLIDE 5: TwoColumn Layout
    // =========================================================================
    println!("📐 Slide 5: TwoColumn Layout");
    slides.push(
        SlideContent::new("Two Column Comparison")
            .layout(SlideLayout::TwoColumn)
            .title_color("1F497D")
            .add_bullet("Left Column Item 1")
            .add_bullet("Left Column Item 2")
            .add_bullet("Left Column Item 3")
            .add_bullet("Right Column Item 1")
            .add_bullet("Right Column Item 2")
            .add_bullet("Right Column Item 3")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 6: Blank Layout
    // =========================================================================
    println!("📐 Slide 6: Blank Layout");
    slides.push(
        SlideContent::new("")
            .layout(SlideLayout::Blank)
    );

    // =========================================================================
    // SLIDE 7: Table with All Cell Styling Options
    // =========================================================================
    println!("📊 Slide 7: Table with Cell Styling");
    let styled_table = TableBuilder::new(vec![1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Header 1").bold().background_color("1F497D"),
            TableCell::new("Header 2").bold().background_color("4F81BD"),
            TableCell::new("Header 3").bold().background_color("8064A2"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Bold Cell").bold(),
            TableCell::new("Normal Cell"),
            TableCell::new("Colored").background_color("9BBB59"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Red BG").background_color("C0504D"),
            TableCell::new("Green BG").background_color("9BBB59"),
            TableCell::new("Blue BG").background_color("4F81BD"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Row 3 Col 1"),
            TableCell::new("Row 3 Col 2"),
            TableCell::new("Row 3 Col 3").bold().background_color("F79646"),
        ]))
        .position(500000, 1800000)
        .build();
    
    slides.push(
        SlideContent::new("Table with Cell Styling")
            .table(styled_table)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 8: Charts (Bar, Line, Pie)
    // =========================================================================
    println!("📈 Slide 8: Chart Types");
    
    // Create chart data structures (for demonstration)
    let _bar_chart = ChartBuilder::new("Sales by Region", ChartType::Bar)
        .categories(vec!["North", "South", "East", "West"])
        .add_series(ChartSeries::new("2023", vec![100.0, 80.0, 120.0, 90.0]))
        .add_series(ChartSeries::new("2024", vec![120.0, 95.0, 140.0, 110.0]))
        .build();
    
    let _line_chart = ChartBuilder::new("Monthly Trend", ChartType::Line)
        .categories(vec!["Jan", "Feb", "Mar", "Apr", "May", "Jun"])
        .add_series(ChartSeries::new("Revenue", vec![10.0, 12.0, 15.0, 14.0, 18.0, 22.0]))
        .build();
    
    let _pie_chart = ChartBuilder::new("Market Share", ChartType::Pie)
        .categories(vec!["Product A", "Product B", "Product C", "Others"])
        .add_series(ChartSeries::new("Share", vec![40.0, 30.0, 20.0, 10.0]))
        .build();
    
    slides.push(
        SlideContent::new("Chart Types: Bar, Line, Pie")
            .with_chart()
            .title_color("1F497D")
            .add_bullet("Bar Chart: Compare categories")
            .add_bullet("Line Chart: Show trends over time")
            .add_bullet("Pie Chart: Show proportions")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 9: Shapes with Different Fills
    // =========================================================================
    println!("🔷 Slide 9: Shapes with Fills");
    
    let rect = Shape::new(ShapeType::Rectangle, 500000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("4F81BD"))
        .with_text("Rectangle");
    
    let ellipse = Shape::new(ShapeType::Ellipse, 3000000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("9BBB59"))
        .with_text("Ellipse");
    
    let rounded = Shape::new(ShapeType::RoundedRectangle, 5500000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("C0504D"))
        .with_text("Rounded");
    
    let triangle = Shape::new(ShapeType::Triangle, 1500000, 3000000, 1500000, 1200000)
        .with_fill(ShapeFill::new("8064A2"))
        .with_text("Triangle");
    
    let diamond = Shape::new(ShapeType::Diamond, 4000000, 3000000, 1500000, 1200000)
        .with_fill(ShapeFill::new("F79646"))
        .with_text("Diamond");
    
    slides.push(
        SlideContent::new("Shape Types with Color Fills")
            .add_shape(rect)
            .add_shape(ellipse)
            .add_shape(rounded)
            .add_shape(triangle)
            .add_shape(diamond)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 10: Gradient Fills (NEW)
    // =========================================================================
    println!("🌈 Slide 10: Gradient Fills");
    
    // Horizontal gradient
    let gradient_h = Shape::new(ShapeType::Rectangle, 500000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("1565C0", "42A5F5", GradientDirection::Horizontal))
        .with_text("Horizontal");
    
    // Vertical gradient
    let gradient_v = Shape::new(ShapeType::Rectangle, 3200000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("2E7D32", "81C784", GradientDirection::Vertical))
        .with_text("Vertical");
    
    // Diagonal gradient
    let gradient_d = Shape::new(ShapeType::RoundedRectangle, 5900000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("C62828", "EF9A9A", GradientDirection::DiagonalDown))
        .with_text("Diagonal");
    
    // Three-color gradient
    let gradient_3 = Shape::new(ShapeType::Ellipse, 1800000, 3200000, 2500000, 1200000)
        .with_gradient(GradientFill::three_color("FF6F00", "FFC107", "FFEB3B", GradientDirection::Horizontal))
        .with_text("3-Color");
    
    // Custom angle gradient
    let gradient_angle = Shape::new(ShapeType::RoundedRectangle, 4800000, 3200000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("7B1FA2", "E1BEE7", GradientDirection::Angle(135)))
        .with_text("135° Angle");
    
    slides.push(
        SlideContent::new("Gradient Fills - Multiple Directions")
            .add_shape(gradient_h)
            .add_shape(gradient_v)
            .add_shape(gradient_d)
            .add_shape(gradient_3)
            .add_shape(gradient_angle)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 11: Transparency (NEW)
    // =========================================================================
    println!("👻 Slide 11: Transparency Effects");
    
    // Base shape (fully opaque)
    let base = Shape::new(ShapeType::Rectangle, 1000000, 1800000, 3000000, 2000000)
        .with_fill(ShapeFill::new("1565C0"))
        .with_text("Base (100%)");
    
    // 25% transparent overlay
    let trans_25 = Shape::new(ShapeType::Rectangle, 2000000, 2200000, 2500000, 1500000)
        .with_fill(ShapeFill::new("F44336").with_transparency(25))
        .with_line(ShapeLine::new("B71C1C", 25400))
        .with_text("25% Transparent");
    
    // 50% transparent overlay
    let trans_50 = Shape::new(ShapeType::Ellipse, 4500000, 1800000, 2500000, 2000000)
        .with_fill(ShapeFill::new("4CAF50").with_transparency(50))
        .with_line(ShapeLine::new("1B5E20", 25400))
        .with_text("50% Transparent");
    
    // 75% transparent overlay
    let trans_75 = Shape::new(ShapeType::RoundedRectangle, 5500000, 2500000, 2500000, 1500000)
        .with_fill(ShapeFill::new("FF9800").with_transparency(75))
        .with_line(ShapeLine::new("E65100", 25400))
        .with_text("75% Transparent");
    
    slides.push(
        SlideContent::new("Transparency Effects - Overlapping Shapes")
            .add_shape(base)
            .add_shape(trans_25)
            .add_shape(trans_50)
            .add_shape(trans_75)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 12: Styled Connectors (NEW)
    // =========================================================================
    println!("🔗 Slide 12: Styled Connectors");
    
    // Create shapes to connect
    let box1 = Shape::new(ShapeType::RoundedRectangle, 500000, 1800000, 1800000, 800000)
        .with_id(100)
        .with_fill(ShapeFill::new("1565C0"))
        .with_text("Start");
    
    let box2 = Shape::new(ShapeType::RoundedRectangle, 3500000, 1800000, 1800000, 800000)
        .with_id(101)
        .with_fill(ShapeFill::new("2E7D32"))
        .with_text("Process");
    
    let box3 = Shape::new(ShapeType::RoundedRectangle, 6500000, 1800000, 1800000, 800000)
        .with_id(102)
        .with_fill(ShapeFill::new("C62828"))
        .with_text("End");
    
    // Straight connector with arrow
    let conn1 = Connector::straight(2300000, 2200000, 3500000, 2200000)
        .with_line(ConnectorLine::new("1565C0", 25400))
        .with_end_arrow(ArrowType::Triangle)
        .with_arrow_size(ArrowSize::Large);
    
    // Elbow connector with stealth arrow
    let conn2 = Connector::elbow(5300000, 2200000, 6500000, 2200000)
        .with_line(ConnectorLine::new("2E7D32", 38100).with_dash(LineDash::Dash))
        .with_end_arrow(ArrowType::Stealth)
        .with_arrow_size(ArrowSize::Medium);
    
    // Curved connector examples
    let box4 = Shape::new(ShapeType::Ellipse, 1000000, 3200000, 1500000, 800000)
        .with_id(103)
        .with_fill(ShapeFill::new("7B1FA2"))
        .with_text("A");
    
    let box5 = Shape::new(ShapeType::Ellipse, 4000000, 3200000, 1500000, 800000)
        .with_id(104)
        .with_fill(ShapeFill::new("00838F"))
        .with_text("B");
    
    let box6 = Shape::new(ShapeType::Ellipse, 7000000, 3200000, 1500000, 800000)
        .with_id(105)
        .with_fill(ShapeFill::new("EF6C00"))
        .with_text("C");
    
    // Curved connector with diamond arrow
    let conn3 = Connector::curved(2500000, 3600000, 4000000, 3600000)
        .with_line(ConnectorLine::new("7B1FA2", 19050).with_dash(LineDash::DashDot))
        .with_arrows(ArrowType::Oval, ArrowType::Diamond);
    
    // Dotted connector
    let conn4 = Connector::straight(5500000, 3600000, 7000000, 3600000)
        .with_line(ConnectorLine::new("00838F", 12700).with_dash(LineDash::Dot))
        .with_end_arrow(ArrowType::Open);
    
    slides.push(
        SlideContent::new("Styled Connectors - Types, Arrows, Dashes")
            .add_shape(box1)
            .add_shape(box2)
            .add_shape(box3)
            .add_shape(box4)
            .add_shape(box5)
            .add_shape(box6)
            .add_connector(conn1)
            .add_connector(conn2)
            .add_connector(conn3)
            .add_connector(conn4)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 13: Images
    // =========================================================================
    println!("🖼️  Slide 13: Image Placeholders");
    
    let img1 = Image::new("logo.png", 2500000, 1800000, "png")
        .position(500000, 1600000);
    let img2 = Image::new("photo.jpg", 2500000, 1800000, "jpg")
        .position(3500000, 1600000);
    let img3 = Image::new("diagram.png", 2000000, 1800000, "png")
        .position(6500000, 1600000);
    
    slides.push(
        SlideContent::new("Image Placeholders")
            .add_image(img1)
            .add_image(img2)
            .add_image(img3)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 11: Advanced Table with Borders & Alignment (NEW)
    // =========================================================================
    println!("📊 Slide 11: Advanced Table (borders, alignment, merged cells)");
    
    // Build advanced table using generator's TableBuilder with alignment
    let advanced_table = TableBuilder::new(vec![2000000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2024 Financial Report").bold().background_color("1F4E79").text_color("FFFFFF").align_center().font_size(14),
            TableCell::new("").background_color("1F4E79"),
            TableCell::new("").background_color("1F4E79"),
            TableCell::new("").background_color("1F4E79"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Category").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Revenue").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Expenses").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Profit").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Product Sales").text_color("000000").align_left(),
            TableCell::new("$1,250,000").text_color("2E7D32").align_right(),
            TableCell::new("$450,000").text_color("C62828").align_right(),
            TableCell::new("$800,000").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Services").text_color("000000").align_left(),
            TableCell::new("$890,000").text_color("2E7D32").align_right(),
            TableCell::new("$320,000").text_color("C62828").align_right(),
            TableCell::new("$570,000").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Total").bold().background_color("E7E6E6").text_color("000000").align_left(),
            TableCell::new("$2,140,000").bold().background_color("E7E6E6").text_color("000000").align_right(),
            TableCell::new("$770,000").bold().background_color("E7E6E6").text_color("000000").align_right(),
            TableCell::new("$1,370,000").bold().background_color("C6EFCE").text_color("006100").align_right(),
        ]))
        .position(300000, 1600000)
        .build();
    
    slides.push(
        SlideContent::new("Financial Report - Advanced Table")
            .table(advanced_table)
            .title_color("1F4E79")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 12: Comparison Matrix Table (NEW)
    // =========================================================================
    println!("📊 Slide 12: Comparison Matrix Table");
    
    let comparison_table = TableBuilder::new(vec![2000000, 1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Feature").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Basic").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Pro").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Enterprise").bold().background_color("4472C4").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Storage").text_color("000000"),
            TableCell::new("5 GB").text_color("000000"),
            TableCell::new("50 GB").text_color("000000"),
            TableCell::new("Unlimited").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Users").text_color("000000"),
            TableCell::new("1").text_color("000000"),
            TableCell::new("10").text_color("000000"),
            TableCell::new("Unlimited").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Support").text_color("000000"),
            TableCell::new("Email").text_color("000000"),
            TableCell::new("24/7 Chat").text_color("000000"),
            TableCell::new("Dedicated").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("API Access").text_color("000000"),
            TableCell::new("No").text_color("C62828"),
            TableCell::new("Yes").text_color("2E7D32"),
            TableCell::new("Yes + Priority").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Price/month").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$9").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$29").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$99").bold().background_color("F2F2F2").text_color("000000"),
        ]))
        .position(500000, 1600000)
        .build();
    
    slides.push(
        SlideContent::new("Pricing Comparison Matrix")
            .table(comparison_table)
            .title_color("4472C4")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 13: Process Flow with Shapes (NEW - SmartArt-like)
    // =========================================================================
    println!("🔷 Slide 13: Process Flow (SmartArt-style)");
    
    // Create process flow using shapes
    let step1 = Shape::new(ShapeType::RoundedRectangle, 300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("1. Research");
    let arrow1 = Shape::new(ShapeType::RightArrow, 1800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step2 = Shape::new(ShapeType::RoundedRectangle, 2300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("2. Design");
    let arrow2 = Shape::new(ShapeType::RightArrow, 3800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step3 = Shape::new(ShapeType::RoundedRectangle, 4300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("3. Develop");
    let arrow3 = Shape::new(ShapeType::RightArrow, 5800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step4 = Shape::new(ShapeType::RoundedRectangle, 6300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("5B9BD5"))
        .with_text("4. Deploy");
    
    slides.push(
        SlideContent::new("Development Process Flow")
            .add_shape(step1)
            .add_shape(arrow1)
            .add_shape(step2)
            .add_shape(arrow2)
            .add_shape(step3)
            .add_shape(arrow3)
            .add_shape(step4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 14: Organization Chart with Shapes (NEW)
    // =========================================================================
    println!("🔷 Slide 14: Organization Chart");
    
    // CEO at top
    let ceo = Shape::new(ShapeType::RoundedRectangle, 3500000, 1400000, 2000000, 600000)
        .with_fill(ShapeFill::new("1F4E79"))
        .with_text("CEO");
    
    // Vertical line from CEO
    let line1 = Shape::new(ShapeType::Rectangle, 4450000, 2000000, 100000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // Horizontal connector
    let hline = Shape::new(ShapeType::Rectangle, 1950000, 2400000, 5100000, 50000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // CTO, CFO, COO
    let cto = Shape::new(ShapeType::RoundedRectangle, 1000000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("CTO");
    let cfo = Shape::new(ShapeType::RoundedRectangle, 3600000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("CFO");
    let coo = Shape::new(ShapeType::RoundedRectangle, 6200000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("COO");
    
    // Vertical lines to departments
    let vline1 = Shape::new(ShapeType::Rectangle, 1850000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let vline2 = Shape::new(ShapeType::Rectangle, 4450000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let vline3 = Shape::new(ShapeType::Rectangle, 7050000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // Teams under CTO
    let eng = Shape::new(ShapeType::Rectangle, 500000, 3300000, 1200000, 400000)
        .with_fill(ShapeFill::new("BDD7EE"))
        .with_text("Engineering");
    let product = Shape::new(ShapeType::Rectangle, 1800000, 3300000, 1200000, 400000)
        .with_fill(ShapeFill::new("BDD7EE"))
        .with_text("Product");
    
    slides.push(
        SlideContent::new("Organization Structure")
            .add_shape(ceo)
            .add_shape(line1)
            .add_shape(hline)
            .add_shape(cto)
            .add_shape(cfo)
            .add_shape(coo)
            .add_shape(vline1)
            .add_shape(vline2)
            .add_shape(vline3)
            .add_shape(eng)
            .add_shape(product)
            .title_color("1F4E79")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 15: PDCA Cycle Diagram (NEW)
    // =========================================================================
    println!("🔷 Slide 15: PDCA Cycle Diagram");
    
    // Four quadrants for PDCA
    let plan = Shape::new(ShapeType::RoundedRectangle, 1500000, 1600000, 2500000, 1500000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("PLAN\n\nDefine goals\nand strategy");
    let do_box = Shape::new(ShapeType::RoundedRectangle, 4500000, 1600000, 2500000, 1500000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("DO\n\nImplement\nthe plan");
    let check = Shape::new(ShapeType::RoundedRectangle, 4500000, 3300000, 2500000, 1500000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("CHECK\n\nMeasure\nresults");
    let act = Shape::new(ShapeType::RoundedRectangle, 1500000, 3300000, 2500000, 1500000)
        .with_fill(ShapeFill::new("FFC000"))
        .with_text("ACT\n\nAdjust and\nimprove");
    
    // Arrows between quadrants
    let arr1 = Shape::new(ShapeType::RightArrow, 4100000, 2100000, 300000, 300000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr2 = Shape::new(ShapeType::DownArrow, 5600000, 3200000, 300000, 200000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr3 = Shape::new(ShapeType::LeftArrow, 4100000, 3800000, 300000, 300000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr4 = Shape::new(ShapeType::UpArrow, 2600000, 3200000, 300000, 200000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    slides.push(
        SlideContent::new("PDCA Continuous Improvement Cycle")
            .add_shape(plan)
            .add_shape(do_box)
            .add_shape(check)
            .add_shape(act)
            .add_shape(arr1)
            .add_shape(arr2)
            .add_shape(arr3)
            .add_shape(arr4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 16: Pyramid Diagram (Maslow's Hierarchy) (NEW)
    // =========================================================================
    println!("🔷 Slide 16: Pyramid Diagram");
    
    // Build pyramid from bottom to top
    let level5 = Shape::new(ShapeType::Trapezoid, 500000, 4000000, 8000000, 600000)
        .with_fill(ShapeFill::new("C00000"))
        .with_text("Physiological Needs - Food, Water, Shelter");
    let level4 = Shape::new(ShapeType::Trapezoid, 1000000, 3400000, 7000000, 600000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Safety Needs - Security, Stability");
    let level3 = Shape::new(ShapeType::Trapezoid, 1500000, 2800000, 6000000, 600000)
        .with_fill(ShapeFill::new("FFC000"))
        .with_text("Love & Belonging - Relationships");
    let level2 = Shape::new(ShapeType::Trapezoid, 2000000, 2200000, 5000000, 600000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Esteem - Achievement, Respect");
    let level1 = Shape::new(ShapeType::Triangle, 2500000, 1500000, 4000000, 700000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Self-Actualization");
    
    slides.push(
        SlideContent::new("Maslow's Hierarchy of Needs")
            .add_shape(level5)
            .add_shape(level4)
            .add_shape(level3)
            .add_shape(level2)
            .add_shape(level1)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 17: Venn Diagram (NEW)
    // =========================================================================
    println!("🔷 Slide 17: Venn Diagram");
    
    // Three overlapping circles
    let circle1 = Shape::new(ShapeType::Ellipse, 1500000, 1800000, 3000000, 3000000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Skills");
    let circle2 = Shape::new(ShapeType::Ellipse, 3500000, 1800000, 3000000, 3000000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Passion");
    let circle3 = Shape::new(ShapeType::Ellipse, 2500000, 3200000, 3000000, 3000000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Market Need");
    
    // Center label
    let center = Shape::new(ShapeType::Ellipse, 3200000, 2800000, 1600000, 800000)
        .with_fill(ShapeFill::new("FFFFFF"))
        .with_text("IKIGAI");
    
    slides.push(
        SlideContent::new("Finding Your Ikigai - Venn Diagram")
            .add_shape(circle1)
            .add_shape(circle2)
            .add_shape(circle3)
            .add_shape(center)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 18: Timeline/Roadmap (NEW)
    // =========================================================================
    println!("📊 Slide 18: Project Timeline");
    
    let timeline_table = TableBuilder::new(vec![1500000, 1500000, 1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q2 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q3 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q4 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q1 2025").bold().background_color("4472C4").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Research\n& Planning").background_color("BDD7EE").text_color("1F497D"),
            TableCell::new("Design\nPhase").background_color("BDD7EE").text_color("1F497D"),
            TableCell::new("Development\nSprint 1-3").background_color("C6EFCE").text_color("006100"),
            TableCell::new("Testing\n& QA").background_color("FCE4D6").text_color("C65911"),
            TableCell::new("Launch\n& Support").background_color("E2EFDA").text_color("375623"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("✓ Complete").bold().text_color("2E7D32"),
            TableCell::new("✓ Complete").bold().text_color("2E7D32"),
            TableCell::new("In Progress").text_color("ED7D31"),
            TableCell::new("Planned").text_color("7F7F7F"),
            TableCell::new("Planned").text_color("7F7F7F"),
        ]))
        .position(300000, 2000000)
        .build();
    
    slides.push(
        SlideContent::new("Project Roadmap 2024-2025")
            .table(timeline_table)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 19: Dashboard Summary (NEW)
    // =========================================================================
    println!("🔷 Slide 19: Dashboard with KPIs");
    
    // KPI boxes
    let kpi1 = Shape::new(ShapeType::RoundedRectangle, 300000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Revenue\n\n$2.14M\n+15% YoY");
    let kpi2 = Shape::new(ShapeType::RoundedRectangle, 2500000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Customers\n\n12,450\n+22% YoY");
    let kpi3 = Shape::new(ShapeType::RoundedRectangle, 4700000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("NPS Score\n\n72\n+8 pts");
    let kpi4 = Shape::new(ShapeType::RoundedRectangle, 6900000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("5B9BD5"))
        .with_text("Retention\n\n94%\n+3% YoY");
    
    // Status indicators
    let status1 = Shape::new(ShapeType::Ellipse, 1800000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    let status2 = Shape::new(ShapeType::Ellipse, 4000000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    let status3 = Shape::new(ShapeType::Ellipse, 6200000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("FFC000"));
    let status4 = Shape::new(ShapeType::Ellipse, 8400000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    
    slides.push(
        SlideContent::new("Executive Dashboard - Q1 2024")
            .add_shape(kpi1)
            .add_shape(kpi2)
            .add_shape(kpi3)
            .add_shape(kpi4)
            .add_shape(status1)
            .add_shape(status2)
            .add_shape(status3)
            .add_shape(status4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 20: Summary Slide (NEW)
    // =========================================================================
    println!("📝 Slide 20: Summary with Speaker Notes");
    
    slides.push(
        SlideContent::new("Summary & Next Steps")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Completed: Research, Design, Initial Development")
            .add_bullet("In Progress: Sprint 3 Development")
            .add_bullet("Next: QA Testing Phase (Q4 2024)")
            .add_bullet("Launch Target: Q1 2025")
            .add_bullet("Key Risks: Resource constraints, Timeline pressure")
            .content_size(24)
            .notes("Speaker Notes:\n\n1. Emphasize the progress made\n2. Highlight key achievements\n3. Address any concerns about timeline\n4. Open for Q&A")
    );

    // =========================================================================
    // SLIDE 21: Bullet Styles (NEW v0.2.1)
    // =========================================================================
    println!("🔢 Slide 21: Bullet Styles (NEW)");
    
    // Numbered list
    slides.push(
        SlideContent::new("Bullet Styles - Numbered List")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .with_bullet_style(BulletStyle::Number)
            .add_bullet("First numbered item")
            .add_bullet("Second numbered item")
            .add_bullet("Third numbered item")
            .add_bullet("Fourth numbered item")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 22: Lettered Lists (NEW v0.2.1)
    // =========================================================================
    println!("🔤 Slide 22: Lettered Lists (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Lettered Lists")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_lettered("Option A - First choice")
            .add_lettered("Option B - Second choice")
            .add_lettered("Option C - Third choice")
            .add_lettered("Option D - Fourth choice")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 23: Roman Numerals (NEW v0.2.1)
    // =========================================================================
    println!("🏛️ Slide 23: Roman Numerals (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Roman Numerals")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .with_bullet_style(BulletStyle::RomanUpper)
            .add_bullet("Chapter I - Introduction")
            .add_bullet("Chapter II - Background")
            .add_bullet("Chapter III - Methodology")
            .add_bullet("Chapter IV - Results")
            .add_bullet("Chapter V - Conclusion")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 24: Custom Bullets (NEW v0.2.1)
    // =========================================================================
    println!("⭐ Slide 24: Custom Bullets (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Custom Characters")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_styled_bullet("Star bullet point", BulletStyle::Custom('★'))
            .add_styled_bullet("Arrow bullet point", BulletStyle::Custom('→'))
            .add_styled_bullet("Check bullet point", BulletStyle::Custom('✓'))
            .add_styled_bullet("Diamond bullet point", BulletStyle::Custom('◆'))
            .add_styled_bullet("Heart bullet point", BulletStyle::Custom('♥'))
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 25: Sub-bullets / Hierarchy (NEW v0.2.1)
    // =========================================================================
    println!("📊 Slide 25: Sub-bullets Hierarchy (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Hierarchical Lists")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Main Topic 1")
            .add_sub_bullet("Supporting detail A")
            .add_sub_bullet("Supporting detail B")
            .add_bullet("Main Topic 2")
            .add_sub_bullet("Supporting detail C")
            .add_sub_bullet("Supporting detail D")
            .add_bullet("Main Topic 3")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 26: Text Enhancements (NEW v0.2.1)
    // =========================================================================
    println!("✏️ Slide 26: Text Enhancements (NEW)");
    
    // Use BulletPoint with formatting
    let strikethrough_bullet = BulletPoint::new("Strikethrough: This text is crossed out").strikethrough();
    let highlight_bullet = BulletPoint::new("Highlight: Yellow background for emphasis").highlight("FFFF00");
    let subscript_bullet = BulletPoint::new("Subscript: H₂O - for chemical formulas").subscript();
    let superscript_bullet = BulletPoint::new("Superscript: x² - for math expressions").superscript();
    let bold_colored = BulletPoint::new("Combined: Bold + Red color").bold().color("FF0000");
    
    let mut text_enhancements_slide = SlideContent::new("Text Enhancements - New Formatting")
        .layout(SlideLayout::TitleAndContent)
        .title_color("1F497D")
        .title_bold(true)
        .content_size(24);
    text_enhancements_slide.bullets.push(strikethrough_bullet);
    text_enhancements_slide.bullets.push(highlight_bullet);
    text_enhancements_slide.bullets.push(subscript_bullet);
    text_enhancements_slide.bullets.push(superscript_bullet);
    text_enhancements_slide.bullets.push(bold_colored);
    
    slides.push(text_enhancements_slide);

    // =========================================================================
    // SLIDE 27: Font Size Presets (NEW v0.2.1)
    // =========================================================================
    println!("🔤 Slide 27: Font Size Presets (NEW)");
    
    // Demonstrate different font sizes per bullet
    let large_bullet = BulletPoint::new(&format!("LARGE: {}pt - Extra large text", font_sizes::LARGE)).font_size(font_sizes::LARGE);
    let heading_bullet = BulletPoint::new(&format!("HEADING: {}pt - Section headers", font_sizes::HEADING)).font_size(font_sizes::HEADING);
    let body_bullet = BulletPoint::new(&format!("BODY: {}pt - Regular content", font_sizes::BODY)).font_size(font_sizes::BODY);
    let small_bullet = BulletPoint::new(&format!("SMALL: {}pt - Smaller text", font_sizes::SMALL)).font_size(font_sizes::SMALL);
    let caption_bullet = BulletPoint::new(&format!("CAPTION: {}pt - Captions and notes", font_sizes::CAPTION)).font_size(font_sizes::CAPTION);
    
    let mut font_size_slide = SlideContent::new("Font Size Presets - Each line different size")
        .layout(SlideLayout::TitleAndContent)
        .title_color("1F497D")
        .title_bold(true)
        .title_size(font_sizes::TITLE);
    font_size_slide.bullets.push(large_bullet);
    font_size_slide.bullets.push(heading_bullet);
    font_size_slide.bullets.push(body_bullet);
    font_size_slide.bullets.push(small_bullet);
    font_size_slide.bullets.push(caption_bullet);
    
    slides.push(font_size_slide);

    // =========================================================================
    // SLIDE 28: Theme Colors (NEW v0.2.1)
    // =========================================================================
    println!("🎨 Slide 28: Theme Colors (NEW)");
    
    // Create shapes with theme colors
    let corporate_shape = Shape::new(ShapeType::Rectangle, 500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::CORPORATE.primary))
        .with_text("Corporate");
    
    let modern_shape = Shape::new(ShapeType::Rectangle, 2500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::MODERN.primary))
        .with_text("Modern");
    
    let vibrant_shape = Shape::new(ShapeType::Rectangle, 4500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::VIBRANT.primary))
        .with_text("Vibrant");
    
    let dark_shape = Shape::new(ShapeType::Rectangle, 6500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::DARK.primary))
        .with_text("Dark");
    
    let nature_shape = Shape::new(ShapeType::Rectangle, 500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::NATURE.primary))
        .with_text("Nature");
    
    let tech_shape = Shape::new(ShapeType::Rectangle, 2500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::TECH.primary))
        .with_text("Tech");
    
    let carbon_shape = Shape::new(ShapeType::Rectangle, 4500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::CARBON.primary))
        .with_text("Carbon");
    
    slides.push(
        SlideContent::new("Theme Color Palettes")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_shape(corporate_shape)
            .add_shape(modern_shape)
            .add_shape(vibrant_shape)
            .add_shape(dark_shape)
            .add_shape(nature_shape)
            .add_shape(tech_shape)
            .add_shape(carbon_shape)
    );

    // =========================================================================
    // SLIDE 29: Material & Carbon Design Colors (NEW v0.2.1)
    // =========================================================================
    println!("🌈 Slide 29: Material & Carbon Colors (NEW)");
    
    // Material Design colors
    let material_red = Shape::new(ShapeType::Rectangle, 500000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_RED))
        .with_text("M-Red");
    
    let material_blue = Shape::new(ShapeType::Rectangle, 1900000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_BLUE))
        .with_text("M-Blue");
    
    let material_green = Shape::new(ShapeType::Rectangle, 3300000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_GREEN))
        .with_text("M-Green");
    
    let material_orange = Shape::new(ShapeType::Rectangle, 4700000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_ORANGE))
        .with_text("M-Orange");
    
    let material_purple = Shape::new(ShapeType::Rectangle, 6100000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_PURPLE))
        .with_text("M-Purple");
    
    // Carbon Design colors
    let carbon_blue = Shape::new(ShapeType::Rectangle, 500000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_BLUE_60))
        .with_text("C-Blue");
    
    let carbon_green = Shape::new(ShapeType::Rectangle, 1900000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_GREEN_50))
        .with_text("C-Green");
    
    let carbon_red = Shape::new(ShapeType::Rectangle, 3300000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_RED_60))
        .with_text("C-Red");
    
    let carbon_purple = Shape::new(ShapeType::Rectangle, 4700000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_PURPLE_60))
        .with_text("C-Purple");
    
    let carbon_gray = Shape::new(ShapeType::Rectangle, 6100000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_GRAY_100))
        .with_text("C-Gray");
    
    slides.push(
        SlideContent::new("Material & Carbon Design Colors")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_shape(material_red)
            .add_shape(material_blue)
            .add_shape(material_green)
            .add_shape(material_orange)
            .add_shape(material_purple)
            .add_shape(carbon_blue)
            .add_shape(carbon_green)
            .add_shape(carbon_red)
            .add_shape(carbon_purple)
            .add_shape(carbon_gray)
    );

    // =========================================================================
    // SLIDE 30: Image from Base64 (NEW v0.2.1)
    // =========================================================================
    println!("🖼️ Slide 30: Image from Base64 (NEW)");
    
    // 1x1 red PNG pixel in base64
    let _red_pixel_base64 = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8DwHwAFBQIAX8jx0gAAAABJRU5ErkJggg==";
    
    // Create image from base64 (demonstrating the API)
    let _base64_image = ImageBuilder::from_base64(_red_pixel_base64, 914400, 914400, "PNG")
        .position(4000000, 2500000)
        .build();
    
    slides.push(
        SlideContent::new("Image Loading - New Methods")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Image::new(path) - Load from file path")
            .add_bullet("Image::from_base64(data) - Load from base64 string")
            .add_bullet("Image::from_bytes(data) - Load from raw bytes")
            .add_bullet("ImageBuilder for fluent API configuration")
            .add_bullet("Built-in base64 decoder (no external deps)")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 31: Feature Summary (NEW v0.2.1)
    // =========================================================================
    println!("📋 Slide 31: v0.2.1 Feature Summary (NEW)");
    
    slides.push(
        SlideContent::new("New Features in v0.2.1")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_numbered("BulletStyle: Number, Letter, Roman, Custom")
            .add_numbered("TextFormat: Strikethrough, Highlight")
            .add_numbered("TextFormat: Subscript, Superscript")
            .add_numbered("Font size presets in prelude")
            .add_numbered("Image::from_base64 and from_bytes")
            .add_numbered("Theme color palettes (7 themes)")
            .add_numbered("Material & Carbon Design colors")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 32: Slide Show Settings - Comparison Table (REAL: embedded in presProps.xml)
    // =========================================================================
    println!("🎬 Slide 34: Slide Show Settings (Visual)");

    let show_speaker = SlideShowSettings::new().pen_color(PenColor::red());
    let show_kiosk = SlideShowSettings::kiosk();
    let _show_range = SlideShowSettings::new()
        .show_type(ShowType::Browsed)
        .slide_range(SlideRange::Range { start: 1, end: 10 })
        .without_animation(true);
    let _speaker_xml = show_speaker.to_xml();
    let _kiosk_xml = show_kiosk.to_xml();

    let show_table = TableBuilder::new(vec![2000000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Setting").bold().background_color("1F4E79").text_color("FFFFFF"),
            TableCell::new("Speaker").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Kiosk").bold().background_color("ED7D31").text_color("FFFFFF"),
            TableCell::new("Browsed").bold().background_color("70AD47").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Loop").bold().background_color("D6E4F0"),
            TableCell::new("No"), TableCell::new("Yes").bold().text_color("2E7D32"),
            TableCell::new("No"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Narration").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("No").text_color("C62828"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Animation").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("Yes"),
            TableCell::new("No").text_color("C62828"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Timings").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("Auto"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Slide Range").bold().background_color("D6E4F0"),
            TableCell::new("All"), TableCell::new("All"),
            TableCell::new("1-10"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Pen Color").bold().background_color("D6E4F0"),
            TableCell::new("Red").text_color("FF0000"),
            TableCell::new("Red").text_color("FF0000"),
            TableCell::new("Red").text_color("FF0000"),
        ]))
        .position(300000, 1600000)
        .build();

    // Mode icons
    let icon_speaker = Shape::new(ShapeType::RoundedRectangle, 300000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Speaker: Full control");
    let icon_kiosk = Shape::new(ShapeType::RoundedRectangle, 3100000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Kiosk: Auto-loop");
    let icon_browsed = Shape::new(ShapeType::RoundedRectangle, 5900000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Browsed: Scrollbar");

    slides.push(
        SlideContent::new("Slide Show Settings - Mode Comparison")
            .table(show_table)
            .add_shape(icon_speaker)
            .add_shape(icon_kiosk)
            .add_shape(icon_browsed)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 35: Print Settings - Visual Handout Grid
    // =========================================================================
    println!("🖨️  Slide 35: Print Settings & Handouts (Visual)");

    let print = PrintSettings::new()
        .print_what(PrintWhat::Handouts)
        .color_mode(PrintColorMode::Grayscale)
        .handout_layout(GenHandoutLayout::SlidesPerPage6)
        .frame_slides(true)
        .header("Q1 2025 Strategy Review")
        .footer("Confidential - Internal Use Only")
        .print_date(true)
        .print_page_numbers(true);
    let _prnpr_xml = print.to_prnpr_xml();
    let _handout_xml = print.to_handout_master_xml();

    // Visual: 6-slide handout grid (2 cols x 3 rows)
    let hdr = Shape::new(ShapeType::Rectangle, 300000, 1500000, 4200000, 300000)
        .with_fill(ShapeFill::new("E7E6E6"))
        .with_text("Q1 2025 Strategy Review");
    // Row 1
    let s1 = Shape::new(ShapeType::Rectangle, 400000, 2000000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 1");
    let s2 = Shape::new(ShapeType::Rectangle, 2500000, 2000000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 2");
    // Row 2
    let s3 = Shape::new(ShapeType::Rectangle, 400000, 3200000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 3");
    let s4 = Shape::new(ShapeType::Rectangle, 2500000, 3200000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 4");
    // Row 3
    let s5 = Shape::new(ShapeType::Rectangle, 400000, 4400000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 5");
    let s6 = Shape::new(ShapeType::Rectangle, 2500000, 4400000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 6");
    let ftr = Shape::new(ShapeType::Rectangle, 300000, 5600000, 4200000, 300000)
        .with_fill(ShapeFill::new("E7E6E6"))
        .with_text("Confidential - Internal Use Only");

    // Settings summary table on the right
    let print_table = TableBuilder::new(vec![1800000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Print Settings").bold().background_color("1F4E79").text_color("FFFFFF"),
            TableCell::new("").background_color("1F4E79"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Print What").bold().background_color("D6E4F0"),
            TableCell::new("Handouts"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Color Mode").bold().background_color("D6E4F0"),
            TableCell::new("Grayscale"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Layout").bold().background_color("D6E4F0"),
            TableCell::new("6 slides/page"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Frame Slides").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Date").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Page Numbers").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .position(5000000, 1800000)
        .build();

    slides.push(
        SlideContent::new("Print Handout - 6 Slides Per Page")
            .table(print_table)
            .add_shape(hdr)
            .add_shape(s1).add_shape(s2)
            .add_shape(s3).add_shape(s4)
            .add_shape(s5).add_shape(s6)
            .add_shape(ftr)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 36: Advanced Table Merging - Actual Merged Table
    // =========================================================================
    println!("📊 Slide 36: Advanced Table Merging (Visual)");

    // Use TableMergeMap to compute states, then build a visual table
    let mut merge_map = TableMergeMap::new(5, 4);
    merge_map.merge_cells(0, 0, 1, 4).unwrap(); // Title row spans all 4 cols
    merge_map.merge_cells(1, 0, 2, 1).unwrap(); // "Products" spans 2 rows
    merge_map.merge_cells(3, 0, 2, 1).unwrap(); // "Services" spans 2 rows

    // Show merge state labels
    let state_00 = merge_map.cell_state(0, 0); // Anchor gridSpan=4
    let state_01 = merge_map.cell_state(0, 1); // HMerge
    let state_10 = merge_map.cell_state(1, 0); // Anchor rowSpan=2
    let state_20 = merge_map.cell_state(2, 0); // VMerge
    println!("   ├── (0,0): {}", state_00.to_xml_attrs().trim());
    println!("   ├── (0,1): {}", state_01.to_xml_attrs().trim());
    println!("   ├── (1,0): {}", state_10.to_xml_attrs().trim());
    println!("   └── (2,0): {}", state_20.to_xml_attrs().trim());

    // Build the table with REAL merge attributes (gridSpan, rowSpan, hMerge, vMerge)
    let merge_table = TableBuilder::new(vec![1500000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2025 Revenue Report").bold().background_color("1F4E79").text_color("FFFFFF").grid_span(4),
            TableCell::new("").background_color("1F4E79").h_merge(),
            TableCell::new("").background_color("1F4E79").h_merge(),
            TableCell::new("").background_color("1F4E79").h_merge(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Products").bold().background_color("BDD7EE").text_color("1F497D").row_span(2),
            TableCell::new("Hardware").background_color("E2EFDA"),
            TableCell::new("$450,000").text_color("2E7D32").align_right(),
            TableCell::new("+12%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("").background_color("BDD7EE").v_merge(),
            TableCell::new("Software").background_color("E2EFDA"),
            TableCell::new("$680,000").text_color("2E7D32").align_right(),
            TableCell::new("+25%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Services").bold().background_color("FCE4D6").text_color("C65911").row_span(2),
            TableCell::new("Consulting").background_color("FFF2CC"),
            TableCell::new("$320,000").text_color("2E7D32").align_right(),
            TableCell::new("+8%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("").background_color("FCE4D6").v_merge(),
            TableCell::new("Support").background_color("FFF2CC"),
            TableCell::new("$190,000").text_color("2E7D32").align_right(),
            TableCell::new("+5%").bold().text_color("2E7D32").align_right(),
        ]))
        .position(300000, 1600000)
        .build();

    // Legend shapes
    let legend_anchor = Shape::new(ShapeType::RoundedRectangle, 300000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Anchor (gridSpan/rowSpan)");
    let legend_hmerge = Shape::new(ShapeType::RoundedRectangle, 2500000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("hMerge (col covered)");
    let legend_vmerge = Shape::new(ShapeType::RoundedRectangle, 4700000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("vMerge (row covered)");
    let legend_normal = Shape::new(ShapeType::RoundedRectangle, 6900000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"))
        .with_text("Normal (no merge)");

    slides.push(
        SlideContent::new("Advanced Table Merging - Merged Cells")
            .table(merge_table)
            .add_shape(legend_anchor)
            .add_shape(legend_hmerge)
            .add_shape(legend_vmerge)
            .add_shape(legend_normal)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // Build PresentationSettings with all advanced features
    // =========================================================================
    println!("\n⚙️  Building Presentation Settings...");

    // Slide show settings (embedded in presProps.xml as <p:showPr>)
    let show_settings = SlideShowSettings::new()
        .show_type(ShowType::Speaker)
        .pen_color(PenColor::red())
        .use_timings(true);
    println!("   ├── Slide Show: Speaker mode, red pen, timings enabled");
    println!("   │   └── XML: {} bytes", show_settings.to_xml().len());

    // Print settings (embedded in presProps.xml as <p:prnPr>)
    let print_settings = PrintSettings::new()
        .print_what(PrintWhat::Handouts)
        .color_mode(PrintColorMode::Grayscale)
        .handout_layout(GenHandoutLayout::SlidesPerPage6)
        .frame_slides(true)
        .header("Q1 2025 Strategy Review")
        .footer("Confidential - Internal Use Only")
        .print_date(true)
        .print_page_numbers(true);
    println!("   └── Print: Handouts, 6/page, grayscale, framed");
    println!("       └── XML: {} bytes", print_settings.to_prnpr_xml().len());

    let pres_settings = PresentationSettings::new()
        .slide_show(show_settings)
        .print(print_settings);
    println!("   All settings configured → presProps.xml");

    // =========================================================================
    // Generate PPTX with real integrated features
    // =========================================================================
    println!("\n📦 Generating PPTX with integrated features...");
    let pptx_data = create_pptx_with_settings(
        "PPTX-RS Element Showcase",
        slides.clone(),
        Some(pres_settings),
    )?;
    fs::write("comprehensive_demo.pptx", &pptx_data)?;
    println!("   ✓ Created comprehensive_demo.pptx ({} slides, {} bytes)", 
             slides.len(), pptx_data.len());

    // =========================================================================
    // Package Analysis - Demonstrate Reading
    // =========================================================================
    println!("\n📖 Package Analysis (Read Capability):");
    
    let package = Package::open("comprehensive_demo.pptx")?;
    let paths = package.part_paths();
    
    let slide_count = paths.iter()
        .filter(|p| p.starts_with("ppt/slides/slide") && p.ends_with(".xml"))
        .count();
    
    println!("   ├── Total parts: {}", package.part_count());
    println!("   ├── Slides: {}", slide_count);
    println!("   └── Package opened and analyzed successfully");

    // =========================================================================
    // NEW: Parts API Demonstration
    // =========================================================================
    println!("\n🧩 Parts API Demonstration:");
    
    // SlideLayoutPart - 11 layout types
    println!("   ┌── SlideLayoutPart (11 layout types):");
    let layouts = [
        LayoutType::Title,
        LayoutType::TitleAndContent,
        LayoutType::SectionHeader,
        LayoutType::TwoContent,
        LayoutType::Comparison,
        LayoutType::TitleOnly,
        LayoutType::Blank,
        LayoutType::ContentWithCaption,
        LayoutType::PictureWithCaption,
        LayoutType::TitleAndVerticalText,
        LayoutType::VerticalTitleAndText,
    ];
    for (i, layout_type) in layouts.iter().enumerate() {
        let layout = SlideLayoutPart::new(i + 1, *layout_type);
        if i < 3 {
            println!("   │   ├── {}: {} ({})", i + 1, layout_type.name(), layout.path());
        }
    }
    println!("   │   └── ... and {} more layout types", layouts.len() - 3);
    
    // SlideMasterPart
    println!("   ├── SlideMasterPart:");
    let mut master = SlideMasterPart::new(1);
    master.set_name("Custom Master");
    master.add_layout_rel_id("rId2");
    master.add_layout_rel_id("rId3");
    println!("   │   ├── Name: {}", master.name());
    println!("   │   ├── Path: {}", master.path());
    println!("   │   └── Layouts: {} linked", master.layout_rel_ids().len());
    
    // ThemePart - Colors and Fonts
    println!("   ├── ThemePart (colors & fonts):");
    let mut theme = ThemePart::new(1);
    theme.set_name("Corporate Theme");
    theme.set_major_font("Arial");
    theme.set_minor_font("Calibri");
    theme.set_color("accent1", "FF5733");
    theme.set_color("accent2", "33FF57");
    let theme_xml = theme.to_xml()?;
    println!("   │   ├── Name: {}", theme.name());
    println!("   │   ├── Major Font: Arial");
    println!("   │   ├── Minor Font: Calibri");
    println!("   │   └── XML size: {} bytes", theme_xml.len());
    
    // NotesSlidePart - Speaker notes
    println!("   ├── NotesSlidePart (speaker notes):");
    let notes = NotesSlidePart::with_text(1, "Remember to:\n- Introduce yourself\n- Explain the agenda\n- Ask for questions");
    let notes_xml = notes.to_xml()?;
    println!("   │   ├── Path: {}", notes.path());
    println!("   │   ├── Text: \"{}...\"", &notes.notes_text()[..20.min(notes.notes_text().len())]);
    println!("   │   └── XML size: {} bytes", notes_xml.len());
    
    // AppPropertiesPart - Application metadata
    println!("   ├── AppPropertiesPart (metadata):");
    let mut app_props = AppPropertiesPart::new();
    app_props.set_company("Acme Corporation");
    app_props.set_slides(slides.len() as u32);
    let app_xml = app_props.to_xml()?;
    println!("   │   ├── Company: Acme Corporation");
    println!("   │   ├── Slides: {}", slides.len());
    println!("   │   └── XML size: {} bytes", app_xml.len());
    
    // MediaPart - Video/Audio formats
    println!("   ├── MediaPart (10 media formats):");
    println!("   │   ├── Video: mp4, webm, avi, wmv, mov");
    println!("   │   ├── Audio: mp3, wav, wma, m4a, ogg");
    let sample_media = MediaPart::new(1, MediaFormat::Mp4, vec![0; 100]);
    println!("   │   └── Sample: {} ({})", sample_media.path(), sample_media.format().mime_type());
    
    // TablePart - Table with formatting
    println!("   ├── TablePart (cell formatting):");
    let table_part = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Header 1").bold().background("4472C4"),
            TableCellPart::new("Header 2").bold().background("4472C4"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Data 1").color("333333"),
            TableCellPart::new("Data 2").italic(),
        ]))
        .position(EMU_PER_INCH, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 6, EMU_PER_INCH * 2);
    let table_xml = table_part.to_slide_xml(10);
    println!("   │   ├── Rows: {}", table_part.rows.len());
    println!("   │   ├── Features: bold, italic, colors, backgrounds");
    println!("   │   └── XML size: {} bytes", table_xml.len());
    
    // ContentTypesPart
    println!("   └── ContentTypesPart:");
    let mut content_types = ContentTypesPart::new();
    content_types.add_presentation();
    content_types.add_slide(1);
    content_types.add_slide_layout(1);
    content_types.add_slide_master(1);
    content_types.add_theme(1);
    content_types.add_core_properties();
    content_types.add_app_properties();
    let ct_xml = content_types.to_xml()?;
    println!("       ├── Path: {}", content_types.path());
    println!("       └── XML size: {} bytes", ct_xml.len());

    // =========================================================================
    // NEW: Elements API Demonstration
    // =========================================================================
    println!("\n🎨 Elements API Demonstration:");
    
    // Color types
    println!("   ┌── Color Types:");
    let rgb = RgbColor::new(255, 87, 51);
    let rgb_hex = RgbColor::from_hex("#4472C4").unwrap();
    let scheme = SchemeColor::Accent1;
    let color = Color::rgb(100, 149, 237);
    println!("   │   ├── RgbColor::new(255, 87, 51) → {}", rgb.to_hex());
    println!("   │   ├── RgbColor::from_hex(\"#4472C4\") → {}", rgb_hex.to_hex());
    println!("   │   ├── SchemeColor::Accent1 → {}", scheme.as_str());
    println!("   │   └── Color::rgb(100, 149, 237) → XML: {}", color.to_xml().chars().take(30).collect::<String>());
    
    // Position and Size
    println!("   ├── Position & Size (EMU units):");
    let pos = Position::from_inches(1.0, 2.0);
    let size = Size::from_inches(4.0, 3.0);
    println!("   │   ├── Position::from_inches(1.0, 2.0) → x={}, y={}", pos.x, pos.y);
    println!("   │   ├── Size::from_inches(4.0, 3.0) → w={}, h={}", size.width, size.height);
    println!("   │   └── EMU_PER_INCH = {}", EMU_PER_INCH);
    
    // Transform
    println!("   └── Transform (position + size + rotation):");
    let transform = Transform::from_inches(1.0, 1.5, 3.0, 2.0).with_rotation(45.0);
    let transform_xml = transform.to_xml();
    println!("       ├── Transform::from_inches(1.0, 1.5, 3.0, 2.0)");
    println!("       ├── .with_rotation(45.0)");
    println!("       └── XML: {}...", &transform_xml[..50.min(transform_xml.len())]);

    // =========================================================================
    // NEW: Advanced Features Demonstration
    // =========================================================================
    println!("\n🚀 Advanced Features Demonstration:");

    // -------------------------------------------------------------------------
    // Complex Table Examples
    // -------------------------------------------------------------------------
    println!("   ┌── Complex Table Examples:");
    
    // Example 1: Financial Report Table
    println!("   │   ┌── Financial Report Table (5x4 with formatting):");
    let financial_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Q1 2024 Financial Summary")
                .col_span(4)
                .bold()
                .center()
                .background("1F4E79")
                .color("FFFFFF")
                .font_size(14)
                .font("Arial Black"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Category").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Revenue").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Expenses").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Profit").bold().center().background("2E75B6").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Product Sales").align(HorizontalAlign::Left),
            TableCellPart::new("$1,250,000").align(HorizontalAlign::Right).color("2E7D32"),
            TableCellPart::new("$450,000").align(HorizontalAlign::Right).color("C62828"),
            TableCellPart::new("$800,000").align(HorizontalAlign::Right).bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Services").align(HorizontalAlign::Left),
            TableCellPart::new("$890,000").align(HorizontalAlign::Right).color("2E7D32"),
            TableCellPart::new("$320,000").align(HorizontalAlign::Right).color("C62828"),
            TableCellPart::new("$570,000").align(HorizontalAlign::Right).bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Total").bold().background("E7E6E6"),
            TableCellPart::new("$2,140,000").bold().align(HorizontalAlign::Right).background("E7E6E6"),
            TableCellPart::new("$770,000").bold().align(HorizontalAlign::Right).background("E7E6E6"),
            TableCellPart::new("$1,370,000").bold().align(HorizontalAlign::Right).background("C6EFCE").color("006100"),
        ]))
        .position(EMU_PER_INCH / 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 8, EMU_PER_INCH * 3);
    let fin_xml = financial_table.to_slide_xml(100);
    println!("   │   │   ├── Merged header spanning 4 columns");
    println!("   │   │   ├── Color-coded values (green=positive, red=negative)");
    println!("   │   │   ├── Custom fonts and sizes");
    println!("   │   │   └── XML: {} bytes", fin_xml.len());

    // Example 2: Comparison Matrix
    println!("   │   ├── Comparison Matrix (features vs products):");
    let matrix_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Feature").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Basic").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Pro").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Enterprise").bold().center().background("4472C4").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Storage").align(HorizontalAlign::Left),
            TableCellPart::new("5 GB").center(),
            TableCellPart::new("50 GB").center(),
            TableCellPart::new("Unlimited").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Users").align(HorizontalAlign::Left),
            TableCellPart::new("1").center(),
            TableCellPart::new("10").center(),
            TableCellPart::new("Unlimited").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Support").align(HorizontalAlign::Left),
            TableCellPart::new("Email").center(),
            TableCellPart::new("24/7 Chat").center(),
            TableCellPart::new("Dedicated").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Price/mo").bold().background("F2F2F2"),
            TableCellPart::new("$9").center().bold().background("F2F2F2"),
            TableCellPart::new("$29").center().bold().background("F2F2F2"),
            TableCellPart::new("$99").center().bold().background("F2F2F2"),
        ]));
    println!("   │   │   └── 5x4 matrix with alternating styles");

    // Example 3: Schedule/Timeline Table
    println!("   │   └── Schedule Table (with row spans):");
    let schedule_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Time").bold().center().background("70AD47").color("FFFFFF"),
            TableCellPart::new("Monday").bold().center().background("70AD47").color("FFFFFF"),
            TableCellPart::new("Tuesday").bold().center().background("70AD47").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("9:00 AM").center().background("E2EFDA"),
            TableCellPart::new("Team Standup").center().row_span(2).valign(VerticalAlign::Middle).background("BDD7EE"),
            TableCellPart::new("Code Review").center(),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("10:00 AM").center().background("E2EFDA"),
            TableCellPart::merged(),
            TableCellPart::new("Sprint Planning").center().background("FCE4D6"),
        ]));
    println!("   │       └── Row spans for multi-hour events");

    // -------------------------------------------------------------------------
    // Complex Animation Sequences
    // -------------------------------------------------------------------------
    println!("   ├── Complex Animation Sequences:");
    
    // Sequence 1: Title entrance with staggered content
    println!("   │   ┌── Staggered Entrance Sequence:");
    let title_anim = Animation::new(2, AnimationEffect::Fade)
        .trigger(AnimationTrigger::OnClick)
        .duration(500);
    let content1 = Animation::new(3, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(200);
    let content2 = Animation::new(4, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(100);
    let content3 = Animation::new(5, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(100);
    let staggered = SlideAnimations::new()
        .add(title_anim)
        .add(content1)
        .add(content2)
        .add(content3)
        .transition(SlideTransition::new(TransitionEffect::Push).direction(AnimationDirection::Left).duration(750));
    let staggered_xml = staggered.to_timing_xml()?;
    println!("   │   │   ├── Title: Fade on click");
    println!("   │   │   ├── Content 1-3: FlyIn with 100ms stagger");
    println!("   │   │   ├── Transition: Push from left (750ms)");
    println!("   │   │   └── XML: {} bytes", staggered_xml.len());

    // Sequence 2: Emphasis and exit
    println!("   │   ├── Emphasis + Exit Sequence:");
    let emphasis = Animation::new(6, AnimationEffect::Pulse)
        .trigger(AnimationTrigger::OnClick)
        .duration(1000)
        .repeat(3);
    let exit = Animation::new(6, AnimationEffect::FadeOut)
        .trigger(AnimationTrigger::AfterPrevious)
        .duration(500);
    let emphasis_seq = SlideAnimations::new()
        .add(emphasis)
        .add(exit);
    println!("   │   │   ├── Pulse 3x on click, then fade out");
    println!("   │   │   └── Same shape, sequential effects");

    // Sequence 3: Motion path
    println!("   │   └── Motion Path Animation:");
    let motion = Animation::new(7, AnimationEffect::Lines)
        .trigger(AnimationTrigger::OnClick)
        .duration(2000);
    println!("   │       └── Custom path: Lines, Arcs, Turns, Loops");

    // -------------------------------------------------------------------------
    // SmartArt Combinations
    // -------------------------------------------------------------------------
    println!("   ├── SmartArt Layout Examples:");
    
    // Process flow
    println!("   │   ┌── Process Flow (5 steps):");
    let process = SmartArtPart::new(1, SmartArtLayout::BasicProcess)
        .add_items(vec!["Research", "Design", "Develop", "Test", "Deploy"])
        .position(EMU_PER_INCH / 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 8, EMU_PER_INCH * 2);
    println!("   │   │   └── {} nodes in horizontal flow", process.nodes().len());

    // Organization chart
    println!("   │   ├── Organization Chart:");
    let org = SmartArtPart::new(2, SmartArtLayout::OrgChart)
        .add_items(vec!["CEO", "CTO", "CFO", "VP Engineering", "VP Sales"]);
    println!("   │   │   └── Hierarchical structure with {} positions", org.nodes().len());

    // Cycle diagram
    println!("   │   ├── Cycle Diagram:");
    let cycle = SmartArtPart::new(3, SmartArtLayout::BasicCycle)
        .add_items(vec!["Plan", "Do", "Check", "Act"]);
    println!("   │   │   └── PDCA cycle with {} phases", cycle.nodes().len());

    // Venn diagram
    println!("   │   ├── Venn Diagram:");
    let venn = SmartArtPart::new(4, SmartArtLayout::BasicVenn)
        .add_items(vec!["Skills", "Passion", "Market Need"]);
    println!("   │   │   └── 3-circle Venn for Ikigai concept");

    // Pyramid
    println!("   │   └── Pyramid:");
    let pyramid = SmartArtPart::new(5, SmartArtLayout::BasicPyramid)
        .add_items(vec!["Self-Actualization", "Esteem", "Love/Belonging", "Safety", "Physiological"]);
    println!("   │       └── Maslow's hierarchy with {} levels", pyramid.nodes().len());

    // -------------------------------------------------------------------------
    // 3D Model Configurations
    // -------------------------------------------------------------------------
    println!("   ├── 3D Model Configurations:");
    
    // Product showcase
    println!("   │   ┌── Product Showcase:");
    let product_3d = Model3DPart::new(1, Model3DFormat::Glb, vec![0; 100])
        .camera(CameraPreset::IsometricTopUp)
        .rotation(0.0, 45.0, 0.0)
        .zoom(1.2)
        .position(EMU_PER_INCH * 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 4, EMU_PER_INCH * 4);
    println!("   │   │   ├── Camera: Isometric top-up view");
    println!("   │   │   ├── Rotation: 45° Y-axis for best angle");
    println!("   │   │   └── Zoom: 1.2x for detail");

    // Architectural model
    println!("   │   ├── Architectural Model:");
    let arch_3d = Model3DPart::new(2, Model3DFormat::Gltf, vec![0; 100])
        .camera(CameraPreset::Front)
        .rotation(15.0, -30.0, 0.0)
        .ambient_light("FFFFCC");
    println!("   │   │   ├── Camera: Front view with tilt");
    println!("   │   │   └── Ambient: Warm lighting (FFFFCC)");

    // Technical diagram
    println!("   │   └── Technical Diagram:");
    let tech_3d = Model3DPart::new(3, Model3DFormat::Obj, vec![0; 100])
        .camera(CameraPreset::IsometricOffAxis1Top)
        .rotation(0.0, 0.0, 0.0);
    println!("   │       └── Camera: Off-axis isometric for exploded view");

    // -------------------------------------------------------------------------
    // Theme + Master + Layout Combination
    // -------------------------------------------------------------------------
    println!("   ├── Theme + Master + Layout Integration:");
    
    // Corporate theme
    let mut corp_theme = ThemePart::new(1);
    corp_theme.set_name("Corporate Blue");
    corp_theme.set_major_font("Segoe UI");
    corp_theme.set_minor_font("Segoe UI Light");
    corp_theme.set_color("dk1", "000000");
    corp_theme.set_color("lt1", "FFFFFF");
    corp_theme.set_color("dk2", "1F497D");
    corp_theme.set_color("lt2", "EEECE1");
    corp_theme.set_color("accent1", "4472C4");
    corp_theme.set_color("accent2", "ED7D31");
    corp_theme.set_color("accent3", "A5A5A5");
    corp_theme.set_color("accent4", "FFC000");
    corp_theme.set_color("accent5", "5B9BD5");
    corp_theme.set_color("accent6", "70AD47");
    let theme_xml = corp_theme.to_xml()?;
    println!("   │   ├── Theme: Corporate Blue");
    println!("   │   │   ├── Fonts: Segoe UI / Segoe UI Light");
    println!("   │   │   ├── 12 color slots defined");
    println!("   │   │   └── XML: {} bytes", theme_xml.len());

    // Master with multiple layouts
    let mut corp_master = SlideMasterPart::new(1);
    corp_master.set_name("Corporate Master");
    corp_master.add_layout_rel_id("rId2"); // Title
    corp_master.add_layout_rel_id("rId3"); // Title + Content
    corp_master.add_layout_rel_id("rId4"); // Section Header
    corp_master.add_layout_rel_id("rId5"); // Two Content
    corp_master.add_layout_rel_id("rId6"); // Comparison
    corp_master.add_layout_rel_id("rId7"); // Title Only
    corp_master.add_layout_rel_id("rId8"); // Blank
    println!("   │   └── Master: {} with {} layouts linked", corp_master.name(), corp_master.layout_rel_ids().len());

    // -------------------------------------------------------------------------
    // VBA + Custom XML Integration
    // -------------------------------------------------------------------------
    println!("   ├── VBA + Custom XML Integration:");
    
    // VBA with multiple modules
    let vba_project = VbaProjectPart::new()
        .add_module(VbaModule::new("AutoRun", r#"
Sub Auto_Open()
    MsgBox "Welcome to the presentation!"
End Sub

Sub NavigateToSlide(slideNum As Integer)
    SlideShowWindows(1).View.GotoSlide slideNum
End Sub
"#))
        .add_module(VbaModule::new("DataHelpers", r#"
Function GetCustomData(key As String) As String
    ' Read from Custom XML part
    GetCustomData = ActivePresentation.CustomXMLParts(1).SelectSingleNode("//" & key).Text
End Function
"#))
        .add_module(VbaModule::class("SlideController", r#"
Private currentSlide As Integer

Public Sub NextSlide()
    currentSlide = currentSlide + 1
    NavigateToSlide currentSlide
End Sub
"#));
    println!("   │   ├── VBA Project:");
    println!("   │   │   ├── AutoRun: Auto_Open, NavigateToSlide");
    println!("   │   │   ├── DataHelpers: GetCustomData (reads Custom XML)");
    println!("   │   │   └── SlideController: Class for navigation");

    // Custom XML with structured data
    let app_config = CustomXmlPart::new(1, "presentationConfig")
        .namespace("http://company.com/pptx/config")
        .property("version", "2.1.0")
        .property("author", "Demo User")
        .property("department", "Engineering")
        .property("confidentiality", "Internal")
        .property("lastModified", "2024-01-15T10:30:00Z");
    let config_xml = app_config.to_xml()?;
    println!("   │   └── Custom XML:");
    println!("   │       ├── Namespace: http://company.com/pptx/config");
    println!("   │       ├── Properties: version, author, department, etc.");
    println!("   │       └── XML: {} bytes", config_xml.len());

    // -------------------------------------------------------------------------
    // Embedded Fonts with Variants
    // -------------------------------------------------------------------------
    println!("   ├── Embedded Font Collection:");
    let mut font_collection = EmbeddedFontCollection::new();
    font_collection.add("Corporate Sans", vec![0; 1000]);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::Bold);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::Italic);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::BoldItalic);
    font_collection.add("Code Mono", vec![0; 800]);
    let fonts_xml = font_collection.to_xml();
    println!("   │   ├── Corporate Sans: Regular, Bold, Italic, BoldItalic");
    println!("   │   ├── Code Mono: Regular");
    println!("   │   ├── Total: {} font files", font_collection.len());
    println!("   │   └── XML: {} bytes", fonts_xml.len());

    // -------------------------------------------------------------------------
    // Handout with Full Configuration
    // -------------------------------------------------------------------------
    println!("   └── Handout Master Configuration:");
    let handout = HandoutMasterPart::new()
        .layout(HandoutLayout::SlidesPerPage6)
        .header("Q1 2024 Strategy Review")
        .footer("Confidential - Internal Use Only");
    let handout_xml = handout.to_xml()?;
    println!("       ├── Layout: 6 slides per page");
    println!("       ├── Header: Q1 2024 Strategy Review");
    println!("       ├── Footer: Confidential - Internal Use Only");
    println!("       └── XML: {} bytes", handout_xml.len());

    // =========================================================================
    // Summary
    // =========================================================================
    println!("\n╔══════════════════════════════════════════════════════════════╗");
    println!("║                    Element Coverage Summary                   ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  LAYOUTS (6 types):                                          ║");
    println!("║    ✓ CenteredTitle    ✓ TitleOnly      ✓ TitleAndContent     ║");
    println!("║    ✓ TitleAndBigContent  ✓ TwoColumn   ✓ Blank               ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  TEXT FORMATTING:                                            ║");
    println!("║    ✓ Bold            ✓ Italic         ✓ Underline            ║");
    println!("║    ✓ Font Size       ✓ Font Color     ✓ Title/Content styles ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  TABLES:                                                     ║");
    println!("║    ✓ Multiple rows/columns  ✓ Bold cells  ✓ Background colors║");
    println!("║    ✓ Header styling         ✓ Position control               ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  CHARTS:                                                     ║");
    println!("║    ✓ Bar Chart       ✓ Line Chart     ✓ Pie Chart            ║");
    println!("║    ✓ Multiple series ✓ Categories                            ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  SHAPES:                                                     ║");
    println!("║    ✓ Rectangle       ✓ Ellipse        ✓ RoundedRectangle     ║");
    println!("║    ✓ Triangle        ✓ Diamond        ✓ Color fills          ║");
    println!("║    ✓ Gradient fills  ✓ Transparency   ✓ Text in shapes       ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  CONNECTORS (NEW):                                           ║");
    println!("║    ✓ Straight        ✓ Elbow          ✓ Curved               ║");
    println!("║    ✓ Arrow types     ✓ Dash styles    ✓ Line colors/widths   ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  IMAGES:                                                     ║");
    println!("║    ✓ Image placeholders  ✓ Position   ✓ Dimensions           ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  PACKAGE:                                                    ║");
    println!("║    ✓ Create PPTX     ✓ Read PPTX      ✓ Analyze contents     ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  PARTS API (NEW):                                            ║");
    println!("║    ✓ SlideLayoutPart (11 types)  ✓ SlideMasterPart           ║");
    println!("║    ✓ ThemePart (colors/fonts)    ✓ NotesSlidePart            ║");
    println!("║    ✓ AppPropertiesPart           ✓ MediaPart (10 formats)    ║");
    println!("║    ✓ TablePart (cell formatting) ✓ ContentTypesPart          ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  ELEMENTS API:                                               ║");
    println!("║    ✓ RgbColor        ✓ SchemeColor    ✓ Color enum           ║");
    println!("║    ✓ Position        ✓ Size           ✓ Transform            ║");
    println!("║    ✓ EMU conversions (inches, cm, mm, pt)                    ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  ADVANCED FEATURES (NEW):                                    ║");
    println!("║    ✓ Animation (50+ effects)  ✓ Transitions (27 types)       ║");
    println!("║    ✓ SmartArt (25 layouts)    ✓ 3D Models (GLB/GLTF/OBJ)     ║");
    println!("║    ✓ VBA Macros (.pptm)       ✓ Embedded Fonts               ║");
    println!("║    ✓ Custom XML               ✓ Handout Master               ║");
    println!("║    ✓ Table borders/alignment  ✓ Merged cells                 ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  Output: comprehensive_demo.pptx ({} slides, {} KB)         ║", 
             slides.len(), pptx_data.len() / 1024);
    println!("╚══════════════════════════════════════════════════════════════╝");

    Ok(())
}

pub fn title_color(self, color: &str) -> Self

Examples found in repository

examples/text_styling_complete.rs (line 80)

fn create_colored_text_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Red Title")
            .title_color("FF0000")
            .add_bullet("Red title text")
            .add_bullet("Regular content"),
        SlideContent::new("Blue Content")
            .content_color("0000FF")
            .add_bullet("Blue bullet point 1")
            .add_bullet("Blue bullet point 2")
            .add_bullet("Blue bullet point 3"),
        SlideContent::new("Green Title & Content")
            .title_color("00AA00")
            .content_color("00AA00")
            .add_bullet("Green title and content")
            .add_bullet("All text is green"),
        SlideContent::new("Purple Accent")
            .title_color("9933FF")
            .add_bullet("Purple title")
            .add_bullet("Regular content"),
    ];

    let pptx_data = create_pptx_with_content("Colored Text", slides)?;
    fs::write("examples/output/colored_text.pptx", pptx_data)?;
    Ok(())
}

fn create_combined_styling_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Bold & Italic & Red")
            .title_bold(true)
            .title_italic(true)
            .title_color("FF0000")
            .title_size(52)
            .add_bullet("Regular content"),
        SlideContent::new("Underlined Blue Content")
            .content_underline(true)
            .content_color("0000FF")
            .content_bold(true)
            .add_bullet("Bold, underlined, blue bullet")
            .add_bullet("Multiple effects applied"),
        SlideContent::new("Mixed Effects")
            .title_italic(true)
            .title_color("FF6600")
            .content_bold(true)
            .content_underline(true)
            .content_color("0066FF")
            .add_bullet("Title: italic, orange")
            .add_bullet("Content: bold, underlined, blue"),
        SlideContent::new("Professional Look")
            .title_bold(true)
            .title_size(48)
            .title_color("003366")
            .content_size(24)
            .add_bullet("Clean, professional styling")
            .add_bullet("Dark blue title with bold")
            .add_bullet("Larger content text"),
    ];

    let pptx_data = create_pptx_with_content("Combined Styling", slides)?;
    fs::write("examples/output/combined_styling.pptx", pptx_data)?;
    Ok(())
}

fn create_professional_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Company Presentation")
            .title_bold(true)
            .title_size(56)
            .title_color("003366")
            .content_size(32)
            .add_bullet("2025 Annual Review"),
        SlideContent::new("Key Highlights")
            .title_bold(true)
            .title_color("003366")
            .content_bold(true)
            .content_color("0066CC")
            .add_bullet("Revenue growth: +25%")
            .add_bullet("Market expansion: 3 new regions")
            .add_bullet("Team growth: +50 employees"),
        SlideContent::new("Strategic Initiatives")
            .title_italic(true)
            .title_color("FF6600")
            .content_underline(true)
            .add_bullet("Digital transformation")
            .add_bullet("Customer experience improvement")
            .add_bullet("Sustainability focus"),
        SlideContent::new("Q1 2025 Goals")
            .title_bold(true)
            .title_underline(true)
            .title_color("003366")
            .content_bold(true)
            .add_bullet("Launch new product line")
            .add_bullet("Expand to 5 new markets")
            .add_bullet("Achieve 30% revenue growth"),
        SlideContent::new("Thank You")
            .title_bold(true)
            .title_size(60)
            .title_color("003366")
            .content_italic(true)
            .content_size(28)
            .add_bullet("Questions & Discussion"),
    ];

    let pptx_data = create_pptx_with_content("Professional Presentation", slides)?;
    fs::write("examples/output/professional.pptx", pptx_data)?;
    Ok(())
}

examples/table_generation.rs (line 117)

fn create_styled_table_example() -> Result<(), Box<dyn std::error::Error>> {
    let header_cells = vec![
        TableCell::new("Name").bold().background_color("003366"),
        TableCell::new("Age").bold().background_color("003366"),
        TableCell::new("City").bold().background_color("003366"),
    ];
    let header_row = TableRow::new(header_cells);

    let data_rows = vec![
        TableRow::new(vec![
            TableCell::new("Alice"),
            TableCell::new("30"),
            TableCell::new("NYC"),
        ]),
        TableRow::new(vec![
            TableCell::new("Bob"),
            TableCell::new("28"),
            TableCell::new("LA"),
        ]),
        TableRow::new(vec![
            TableCell::new("Carol"),
            TableCell::new("35"),
            TableCell::new("Chicago"),
        ]),
    ];

    let table = Table::new(
        vec![vec![header_row], data_rows].concat(),
        vec![1500000, 1500000, 1500000],
        500000,
        1500000,
    );

    let slides = vec![
        SlideContent::new("Styled Table")
            .title_bold(true)
            .title_color("003366")
            .add_bullet("Table with formatting"),
        SlideContent::new("People Data")
            .table(table),
    ];

    let pptx_data = create_pptx_with_content("Styled Table", slides)?;
    fs::write("examples/output/styled_table.pptx", pptx_data)?;
    Ok(())
}

examples/alignment_test.rs (line 25)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    println!("=== Alignment Test: ppt-rs vs python-pptx ===\n");
    
    // Create output directory
    fs::create_dir_all("examples/output")?;
    
    // Create slides matching the reference presentation structure
    let slides = vec![
        // Slide 1: Title Slide
        SlideContent::new("Alignment Test Presentation")
            .title_size(54)
            .title_bold(true)
            .title_color("003366"),  // RGB(0, 51, 102)
        
        // Slide 2: Content Slide
        SlideContent::new("Shapes and Formatting")
            .title_size(44)
            .title_bold(true)
            .title_color("003366")
            .add_bullet("Text formatting (bold, colors, sizes)")
            .add_bullet("Shape creation and positioning")
            .add_bullet("Multiple slides and layouts"),
    ];
    
    // Generate PPTX
    let pptx_data = create_pptx_with_content(
        "Alignment Test Presentation",
        slides,
    )?;
    
    // Write to file
    let output_path = "examples/output/alignment_test_ppt_rs.pptx";
    fs::write(output_path, pptx_data)?;
    
    println!("✓ Created presentation: {output_path}");
    println!("  - Title: Alignment Test Presentation");
    println!("  - Slides: 2");
    println!("\nNext steps:");
    println!("  1. Generate reference: python3 scripts/generate_reference.py");
    println!("  2. Compare files: python3 scripts/compare_pptx.py");
    
    Ok(())
}

examples/layout_demo.rs (line 13)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        // Slide 1: Title Only
        SlideContent::new("Welcome to Layout Demo")
            .layout(SlideLayout::TitleOnly),

        // Slide 2: Centered Title (good for cover slides)
        SlideContent::new("Centered Title Slide")
            .layout(SlideLayout::CenteredTitle)
            .title_size(60)
            .title_color("4F81BD"),

        // Slide 3: Title and Content (standard layout)
        SlideContent::new("Standard Layout")
            .add_bullet("Point 1: Title at top")
            .add_bullet("Point 2: Content below")
            .add_bullet("Point 3: Most common layout")
            .layout(SlideLayout::TitleAndContent),

        // Slide 4: Title and Big Content
        SlideContent::new("Big Content Area")
            .add_bullet("More space for content")
            .add_bullet("Smaller title area")
            .add_bullet("Good for detailed slides")
            .add_bullet("Maximizes content space")
            .layout(SlideLayout::TitleAndBigContent),

        // Slide 5: Two Column Layout
        SlideContent::new("Two Column Layout")
            .add_bullet("Left column content")
            .add_bullet("Organized side by side")
            .add_bullet("Great for comparisons")
            .layout(SlideLayout::TwoColumn),

        // Slide 6: Blank Slide
        SlideContent::new("")
            .layout(SlideLayout::Blank),

        // Slide 7: Summary with different formatting
        SlideContent::new("Summary")
            .title_size(48)
            .title_bold(true)
            .title_color("C0504D")
            .add_bullet("Layout types implemented:")
            .add_bullet("• TitleOnly - Just title")
            .add_bullet("• CenteredTitle - Title centered")
            .add_bullet("• TitleAndContent - Standard")
            .add_bullet("• TitleAndBigContent - Large content")
            .add_bullet("• TwoColumn - Side by side")
            .add_bullet("• Blank - Empty slide")
            .content_size(20)
            .layout(SlideLayout::TitleAndContent),
    ];

    let pptx_data = create_pptx_with_content("Layout Demo Presentation", slides)?;
    std::fs::write("layout_demo.pptx", pptx_data)?;
    println!("✓ Created layout_demo.pptx with 7 slides demonstrating different layouts");

    Ok(())
}

examples/edit_presentation.rs (line 28)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    println!("╔════════════════════════════════════════════════════════════╗");
    println!("║         PPTX Editing Demo                                  ║");
    println!("╚════════════════════════════════════════════════════════════╝\n");

    // =========================================================================
    // Step 1: Create an initial presentation
    // =========================================================================
    println!("📝 Step 1: Creating initial presentation...");
    
    let initial_slides = vec![
        SlideContent::new("Original Presentation")
            .layout(SlideLayout::CenteredTitle)
            .title_bold(true)
            .title_color("1F497D"),
        
        SlideContent::new("Slide 1: Introduction")
            .add_bullet("This is the original content")
            .add_bullet("Created programmatically"),
        
        SlideContent::new("Slide 2: Features")
            .add_bullet("Feature A")
            .add_bullet("Feature B")
            .add_bullet("Feature C"),
    ];
    
    let pptx_data = create_pptx_with_content("Original Presentation", initial_slides)?;
    fs::write("original.pptx", &pptx_data)?;
    println!("   ✓ Created original.pptx with 3 slides\n");

    // =========================================================================
    // Step 2: Open and inspect the presentation
    // =========================================================================
    println!("📖 Step 2: Opening presentation for editing...");
    
    let mut editor = PresentationEditor::open("original.pptx")?;
    println!("   ✓ Opened original.pptx");
    println!("   ├── Slide count: {}", editor.slide_count());
    
    // Read first slide
    let slide0 = editor.get_slide(0)?;
    println!("   └── First slide title: {:?}\n", slide0.title);

    // =========================================================================
    // Step 3: Add new slides
    // =========================================================================
    println!("➕ Step 3: Adding new slides...");
    
    // Add a new slide at the end
    let new_slide1 = SlideContent::new("New Slide: Added via Editor")
        .add_bullet("This slide was added programmatically")
        .add_bullet("Using PresentationEditor")
        .add_bullet("After the presentation was created")
        .title_color("9BBB59");
    
    let idx1 = editor.add_slide(new_slide1)?;
    println!("   ✓ Added slide at index {}", idx1);
    
    // Add another slide
    let new_slide2 = SlideContent::new("Another New Slide")
        .layout(SlideLayout::TwoColumn)
        .add_bullet("Left column item 1")
        .add_bullet("Left column item 2")
        .add_bullet("Right column item 1")
        .add_bullet("Right column item 2");
    
    let idx2 = editor.add_slide(new_slide2)?;
    println!("   ✓ Added slide at index {}", idx2);
    println!("   └── Total slides now: {}\n", editor.slide_count());

    // =========================================================================
    // Step 4: Update existing slide
    // =========================================================================
    println!("✏️  Step 4: Updating existing slide...");
    
    let updated_slide = SlideContent::new("Slide 2: Updated Features")
        .add_bullet("Feature A - Enhanced!")
        .add_bullet("Feature B - Improved!")
        .add_bullet("Feature C - Optimized!")
        .add_bullet("Feature D - NEW!")
        .title_color("C0504D")
        .content_bold(true);
    
    editor.update_slide(2, updated_slide)?;
    println!("   ✓ Updated slide at index 2\n");

    // =========================================================================
    // Step 5: Save modified presentation
    // =========================================================================
    println!("💾 Step 5: Saving modified presentation...");
    
    editor.save("modified.pptx")?;
    println!("   ✓ Saved as modified.pptx\n");

    // =========================================================================
    // Step 6: Verify the changes
    // =========================================================================
    println!("🔍 Step 6: Verifying changes...");
    
    let reader = PresentationReader::open("modified.pptx")?;
    println!("   Modified presentation:");
    println!("   ├── Slide count: {}", reader.slide_count());
    
    for i in 0..reader.slide_count() {
        let slide = reader.get_slide(i)?;
        let title = slide.title.as_deref().unwrap_or("(no title)");
        let bullets = slide.body_text.len();
        println!("   {}── Slide {}: \"{}\" ({} bullets)", 
                 if i == reader.slide_count() - 1 { "└" } else { "├" },
                 i + 1, 
                 title,
                 bullets);
    }

    // =========================================================================
    // Step 7: Demonstrate slide removal
    // =========================================================================
    println!("\n🗑️  Step 7: Demonstrating slide removal...");
    
    let mut editor2 = PresentationEditor::open("modified.pptx")?;
    println!("   Before removal: {} slides", editor2.slide_count());
    
    // Remove the last slide
    editor2.remove_slide(editor2.slide_count() - 1)?;
    println!("   ✓ Removed last slide");
    println!("   After removal: {} slides", editor2.slide_count());
    
    editor2.save("trimmed.pptx")?;
    println!("   ✓ Saved as trimmed.pptx");

    // Cleanup
    fs::remove_file("original.pptx").ok();
    fs::remove_file("modified.pptx").ok();
    fs::remove_file("trimmed.pptx").ok();

    // =========================================================================
    // Summary
    // =========================================================================
    println!("\n╔════════════════════════════════════════════════════════════╗");
    println!("║                    Demo Complete                           ║");
    println!("╠════════════════════════════════════════════════════════════╣");
    println!("║  Capabilities Demonstrated:                                ║");
    println!("║  ✓ PresentationEditor::open() - Open for editing           ║");
    println!("║  ✓ editor.add_slide() - Add new slides                     ║");
    println!("║  ✓ editor.update_slide() - Modify existing slides          ║");
    println!("║  ✓ editor.remove_slide() - Remove slides                   ║");
    println!("║  ✓ editor.save() - Save modified presentation              ║");
    println!("║  ✓ editor.get_slide() - Read slide content                 ║");
    println!("╚════════════════════════════════════════════════════════════╝");

    Ok(())
}

examples/read_presentation.rs (line 27)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    println!("╔════════════════════════════════════════════════════════════╗");
    println!("║         PPTX Reading & Parsing Demo                        ║");
    println!("╚════════════════════════════════════════════════════════════╝\n");

    // =========================================================================
    // Step 1: Create a sample PPTX to read
    // =========================================================================
    println!("📝 Step 1: Creating sample presentation...");
    
    let slides = vec![
        SlideContent::new("Welcome to PPTX-RS")
            .layout(SlideLayout::CenteredTitle)
            .title_bold(true)
            .title_color("1F497D"),
        
        SlideContent::new("Features Overview")
            .add_bullet("Create presentations programmatically")
            .add_bullet("Read existing PPTX files")
            .add_bullet("Extract text and metadata")
            .add_bullet("Parse shapes and tables"),
        
        SlideContent::new("Technical Details")
            .layout(SlideLayout::TwoColumn)
            .add_bullet("XML parsing with xml-rs")
            .add_bullet("ZIP handling with zip crate")
            .add_bullet("ECMA-376 compliant")
            .add_bullet("Rust 2024 edition")
            .add_bullet("Cross-platform")
            .add_bullet("No external dependencies"),
        
        SlideContent::new("Summary")
            .add_bullet("Full read/write support")
            .add_bullet("Comprehensive API")
            .add_bullet("Well tested"),
    ];
    
    let pptx_data = create_pptx_with_content("PPTX-RS Demo", slides)?;
    fs::write("sample_presentation.pptx", &pptx_data)?;
    println!("   ✓ Created sample_presentation.pptx ({} bytes)\n", pptx_data.len());

    // =========================================================================
    // Step 2: Open and read the presentation
    // =========================================================================
    println!("📖 Step 2: Opening presentation...");
    
    let reader = PresentationReader::open("sample_presentation.pptx")?;
    let info = reader.info();
    
    println!("   Presentation Info:");
    println!("   ├── Title: {}", info.title.as_deref().unwrap_or("(none)"));
    println!("   ├── Creator: {}", info.creator.as_deref().unwrap_or("(none)"));
    println!("   ├── Slides: {}", info.slide_count);
    println!("   └── Revision: {}\n", info.revision.unwrap_or(0));

    // =========================================================================
    // Step 3: Parse each slide
    // =========================================================================
    println!("📑 Step 3: Parsing slides...");
    
    for i in 0..reader.slide_count() {
        let slide = reader.get_slide(i)?;
        
        println!("\n   Slide {}:", i + 1);
        println!("   ├── Title: {}", slide.title.as_deref().unwrap_or("(none)"));
        println!("   ├── Shapes: {}", slide.shapes.len());
        println!("   ├── Tables: {}", slide.tables.len());
        
        if !slide.body_text.is_empty() {
            println!("   └── Body text:");
            for (j, text) in slide.body_text.iter().enumerate() {
                let prefix = if j == slide.body_text.len() - 1 { "       └──" } else { "       ├──" };
                println!("{}  {}", prefix, text);
            }
        } else {
            println!("   └── Body text: (none)");
        }
    }

    // =========================================================================
    // Step 4: Extract all text
    // =========================================================================
    println!("\n📋 Step 4: Extracting all text...");
    
    let all_text = reader.extract_all_text()?;
    println!("   Found {} text items:", all_text.len());
    for (i, text) in all_text.iter().take(10).enumerate() {
        println!("   {}. {}", i + 1, text);
    }
    if all_text.len() > 10 {
        println!("   ... and {} more", all_text.len() - 10);
    }

    // =========================================================================
    // Step 5: Direct XML parsing (advanced)
    // =========================================================================
    println!("\n🔧 Step 5: Direct XML parsing (advanced)...");
    
    // You can also parse slide XML directly
    let sample_xml = r#"<?xml version="1.0" encoding="UTF-8"?>
    <p:sld xmlns:a="http://schemas.openxmlformats.org/drawingml/2006/main" 
           xmlns:p="http://schemas.openxmlformats.org/presentationml/2006/main">
        <p:cSld>
            <p:spTree>
                <p:sp>
                    <p:nvSpPr>
                        <p:cNvPr id="2" name="Title"/>
                        <p:nvPr><p:ph type="title"/></p:nvPr>
                    </p:nvSpPr>
                    <p:txBody>
                        <a:p>
                            <a:r>
                                <a:rPr b="1" sz="4400"/>
                                <a:t>Direct Parse Example</a:t>
                            </a:r>
                        </a:p>
                    </p:txBody>
                </p:sp>
            </p:spTree>
        </p:cSld>
    </p:sld>"#;
    
    let parsed = SlideParser::parse(sample_xml)?;
    println!("   Parsed XML directly:");
    println!("   ├── Title: {}", parsed.title.as_deref().unwrap_or("(none)"));
    println!("   └── Shapes: {}", parsed.shapes.len());
    
    if let Some(shape) = parsed.shapes.first() {
        if let Some(para) = shape.paragraphs.first() {
            if let Some(run) = para.runs.first() {
                println!("\n   Text formatting detected:");
                println!("   ├── Bold: {}", run.bold);
                println!("   ├── Font size: {:?}", run.font_size);
                println!("   └── Text: {}", run.text);
            }
        }
    }

    // Cleanup
    fs::remove_file("sample_presentation.pptx").ok();

    // =========================================================================
    // Summary
    // =========================================================================
    println!("\n╔════════════════════════════════════════════════════════════╗");
    println!("║                    Demo Complete                           ║");
    println!("╠════════════════════════════════════════════════════════════╣");
    println!("║  Capabilities Demonstrated:                                ║");
    println!("║  ✓ PresentationReader::open() - Open PPTX files            ║");
    println!("║  ✓ reader.info() - Get presentation metadata               ║");
    println!("║  ✓ reader.get_slide(i) - Parse individual slides           ║");
    println!("║  ✓ reader.extract_all_text() - Extract all text            ║");
    println!("║  ✓ SlideParser::parse() - Direct XML parsing               ║");
    println!("╚════════════════════════════════════════════════════════════╝");

    Ok(())
}

Additional examples can be found in:

• examples/comprehensive_demo.rs

pub fn content_color(self, color: &str) -> Self

Examples found in repository

examples/text_styling_complete.rs (line 84)

fn create_colored_text_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Red Title")
            .title_color("FF0000")
            .add_bullet("Red title text")
            .add_bullet("Regular content"),
        SlideContent::new("Blue Content")
            .content_color("0000FF")
            .add_bullet("Blue bullet point 1")
            .add_bullet("Blue bullet point 2")
            .add_bullet("Blue bullet point 3"),
        SlideContent::new("Green Title & Content")
            .title_color("00AA00")
            .content_color("00AA00")
            .add_bullet("Green title and content")
            .add_bullet("All text is green"),
        SlideContent::new("Purple Accent")
            .title_color("9933FF")
            .add_bullet("Purple title")
            .add_bullet("Regular content"),
    ];

    let pptx_data = create_pptx_with_content("Colored Text", slides)?;
    fs::write("examples/output/colored_text.pptx", pptx_data)?;
    Ok(())
}

fn create_combined_styling_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Bold & Italic & Red")
            .title_bold(true)
            .title_italic(true)
            .title_color("FF0000")
            .title_size(52)
            .add_bullet("Regular content"),
        SlideContent::new("Underlined Blue Content")
            .content_underline(true)
            .content_color("0000FF")
            .content_bold(true)
            .add_bullet("Bold, underlined, blue bullet")
            .add_bullet("Multiple effects applied"),
        SlideContent::new("Mixed Effects")
            .title_italic(true)
            .title_color("FF6600")
            .content_bold(true)
            .content_underline(true)
            .content_color("0066FF")
            .add_bullet("Title: italic, orange")
            .add_bullet("Content: bold, underlined, blue"),
        SlideContent::new("Professional Look")
            .title_bold(true)
            .title_size(48)
            .title_color("003366")
            .content_size(24)
            .add_bullet("Clean, professional styling")
            .add_bullet("Dark blue title with bold")
            .add_bullet("Larger content text"),
    ];

    let pptx_data = create_pptx_with_content("Combined Styling", slides)?;
    fs::write("examples/output/combined_styling.pptx", pptx_data)?;
    Ok(())
}

fn create_professional_example() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        SlideContent::new("Company Presentation")
            .title_bold(true)
            .title_size(56)
            .title_color("003366")
            .content_size(32)
            .add_bullet("2025 Annual Review"),
        SlideContent::new("Key Highlights")
            .title_bold(true)
            .title_color("003366")
            .content_bold(true)
            .content_color("0066CC")
            .add_bullet("Revenue growth: +25%")
            .add_bullet("Market expansion: 3 new regions")
            .add_bullet("Team growth: +50 employees"),
        SlideContent::new("Strategic Initiatives")
            .title_italic(true)
            .title_color("FF6600")
            .content_underline(true)
            .add_bullet("Digital transformation")
            .add_bullet("Customer experience improvement")
            .add_bullet("Sustainability focus"),
        SlideContent::new("Q1 2025 Goals")
            .title_bold(true)
            .title_underline(true)
            .title_color("003366")
            .content_bold(true)
            .add_bullet("Launch new product line")
            .add_bullet("Expand to 5 new markets")
            .add_bullet("Achieve 30% revenue growth"),
        SlideContent::new("Thank You")
            .title_bold(true)
            .title_size(60)
            .title_color("003366")
            .content_italic(true)
            .content_size(28)
            .add_bullet("Questions & Discussion"),
    ];

    let pptx_data = create_pptx_with_content("Professional Presentation", slides)?;
    fs::write("examples/output/professional.pptx", pptx_data)?;
    Ok(())
}

examples/comprehensive_demo.rs (line 121)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    println!("╔══════════════════════════════════════════════════════════════╗");
    println!("║       PPTX-RS Element Showcase - Complete Coverage           ║");
    println!("╚══════════════════════════════════════════════════════════════╝\n");

    let mut slides = Vec::new();

    // =========================================================================
    // SLIDE 1: CenteredTitle Layout + Title Formatting
    // =========================================================================
    println!("📐 Slide 1: CenteredTitle Layout + Title Formatting");
    slides.push(
        SlideContent::new("PPTX-RS Element Showcase")
            .layout(SlideLayout::CenteredTitle)
            .title_size(54)
            .title_bold(true)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 2: TitleOnly Layout
    // =========================================================================
    println!("📐 Slide 2: TitleOnly Layout");
    slides.push(
        SlideContent::new("Section: Slide Layouts")
            .layout(SlideLayout::TitleOnly)
            .title_size(48)
            .title_bold(true)
            .title_color("C0504D")
    );

    // =========================================================================
    // SLIDE 3: TitleAndContent Layout + All Text Formatting
    // =========================================================================
    println!("📝 Slide 3: TitleAndContent + Text Formatting");
    slides.push(
        SlideContent::new("Text Formatting Options")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .title_italic(true)
            .title_underline(true)
            .title_size(44)
            .add_bullet("Normal text (default)")
            .add_bullet("Bold content text")
            .add_bullet("Italic content text")
            .add_bullet("Underlined content")
            .add_bullet("Custom font size (28pt)")
            .add_bullet("Custom color (#4F81BD)")
            .content_bold(true)
            .content_italic(true)
            .content_underline(true)
            .content_size(28)
            .content_color("4F81BD")
    );

    // =========================================================================
    // SLIDE 4: TitleAndBigContent Layout
    // =========================================================================
    println!("📐 Slide 4: TitleAndBigContent Layout");
    slides.push(
        SlideContent::new("Key Highlights")
            .layout(SlideLayout::TitleAndBigContent)
            .title_color("1F497D")
            .add_bullet("Large content area for emphasis")
            .add_bullet("Perfect for key messages")
            .add_bullet("Smaller title, bigger content")
            .content_bold(true)
            .content_size(32)
    );

    // =========================================================================
    // SLIDE 5: TwoColumn Layout
    // =========================================================================
    println!("📐 Slide 5: TwoColumn Layout");
    slides.push(
        SlideContent::new("Two Column Comparison")
            .layout(SlideLayout::TwoColumn)
            .title_color("1F497D")
            .add_bullet("Left Column Item 1")
            .add_bullet("Left Column Item 2")
            .add_bullet("Left Column Item 3")
            .add_bullet("Right Column Item 1")
            .add_bullet("Right Column Item 2")
            .add_bullet("Right Column Item 3")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 6: Blank Layout
    // =========================================================================
    println!("📐 Slide 6: Blank Layout");
    slides.push(
        SlideContent::new("")
            .layout(SlideLayout::Blank)
    );

    // =========================================================================
    // SLIDE 7: Table with All Cell Styling Options
    // =========================================================================
    println!("📊 Slide 7: Table with Cell Styling");
    let styled_table = TableBuilder::new(vec![1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Header 1").bold().background_color("1F497D"),
            TableCell::new("Header 2").bold().background_color("4F81BD"),
            TableCell::new("Header 3").bold().background_color("8064A2"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Bold Cell").bold(),
            TableCell::new("Normal Cell"),
            TableCell::new("Colored").background_color("9BBB59"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Red BG").background_color("C0504D"),
            TableCell::new("Green BG").background_color("9BBB59"),
            TableCell::new("Blue BG").background_color("4F81BD"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Row 3 Col 1"),
            TableCell::new("Row 3 Col 2"),
            TableCell::new("Row 3 Col 3").bold().background_color("F79646"),
        ]))
        .position(500000, 1800000)
        .build();
    
    slides.push(
        SlideContent::new("Table with Cell Styling")
            .table(styled_table)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 8: Charts (Bar, Line, Pie)
    // =========================================================================
    println!("📈 Slide 8: Chart Types");
    
    // Create chart data structures (for demonstration)
    let _bar_chart = ChartBuilder::new("Sales by Region", ChartType::Bar)
        .categories(vec!["North", "South", "East", "West"])
        .add_series(ChartSeries::new("2023", vec![100.0, 80.0, 120.0, 90.0]))
        .add_series(ChartSeries::new("2024", vec![120.0, 95.0, 140.0, 110.0]))
        .build();
    
    let _line_chart = ChartBuilder::new("Monthly Trend", ChartType::Line)
        .categories(vec!["Jan", "Feb", "Mar", "Apr", "May", "Jun"])
        .add_series(ChartSeries::new("Revenue", vec![10.0, 12.0, 15.0, 14.0, 18.0, 22.0]))
        .build();
    
    let _pie_chart = ChartBuilder::new("Market Share", ChartType::Pie)
        .categories(vec!["Product A", "Product B", "Product C", "Others"])
        .add_series(ChartSeries::new("Share", vec![40.0, 30.0, 20.0, 10.0]))
        .build();
    
    slides.push(
        SlideContent::new("Chart Types: Bar, Line, Pie")
            .with_chart()
            .title_color("1F497D")
            .add_bullet("Bar Chart: Compare categories")
            .add_bullet("Line Chart: Show trends over time")
            .add_bullet("Pie Chart: Show proportions")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 9: Shapes with Different Fills
    // =========================================================================
    println!("🔷 Slide 9: Shapes with Fills");
    
    let rect = Shape::new(ShapeType::Rectangle, 500000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("4F81BD"))
        .with_text("Rectangle");
    
    let ellipse = Shape::new(ShapeType::Ellipse, 3000000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("9BBB59"))
        .with_text("Ellipse");
    
    let rounded = Shape::new(ShapeType::RoundedRectangle, 5500000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("C0504D"))
        .with_text("Rounded");
    
    let triangle = Shape::new(ShapeType::Triangle, 1500000, 3000000, 1500000, 1200000)
        .with_fill(ShapeFill::new("8064A2"))
        .with_text("Triangle");
    
    let diamond = Shape::new(ShapeType::Diamond, 4000000, 3000000, 1500000, 1200000)
        .with_fill(ShapeFill::new("F79646"))
        .with_text("Diamond");
    
    slides.push(
        SlideContent::new("Shape Types with Color Fills")
            .add_shape(rect)
            .add_shape(ellipse)
            .add_shape(rounded)
            .add_shape(triangle)
            .add_shape(diamond)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 10: Gradient Fills (NEW)
    // =========================================================================
    println!("🌈 Slide 10: Gradient Fills");
    
    // Horizontal gradient
    let gradient_h = Shape::new(ShapeType::Rectangle, 500000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("1565C0", "42A5F5", GradientDirection::Horizontal))
        .with_text("Horizontal");
    
    // Vertical gradient
    let gradient_v = Shape::new(ShapeType::Rectangle, 3200000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("2E7D32", "81C784", GradientDirection::Vertical))
        .with_text("Vertical");
    
    // Diagonal gradient
    let gradient_d = Shape::new(ShapeType::RoundedRectangle, 5900000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("C62828", "EF9A9A", GradientDirection::DiagonalDown))
        .with_text("Diagonal");
    
    // Three-color gradient
    let gradient_3 = Shape::new(ShapeType::Ellipse, 1800000, 3200000, 2500000, 1200000)
        .with_gradient(GradientFill::three_color("FF6F00", "FFC107", "FFEB3B", GradientDirection::Horizontal))
        .with_text("3-Color");
    
    // Custom angle gradient
    let gradient_angle = Shape::new(ShapeType::RoundedRectangle, 4800000, 3200000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("7B1FA2", "E1BEE7", GradientDirection::Angle(135)))
        .with_text("135° Angle");
    
    slides.push(
        SlideContent::new("Gradient Fills - Multiple Directions")
            .add_shape(gradient_h)
            .add_shape(gradient_v)
            .add_shape(gradient_d)
            .add_shape(gradient_3)
            .add_shape(gradient_angle)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 11: Transparency (NEW)
    // =========================================================================
    println!("👻 Slide 11: Transparency Effects");
    
    // Base shape (fully opaque)
    let base = Shape::new(ShapeType::Rectangle, 1000000, 1800000, 3000000, 2000000)
        .with_fill(ShapeFill::new("1565C0"))
        .with_text("Base (100%)");
    
    // 25% transparent overlay
    let trans_25 = Shape::new(ShapeType::Rectangle, 2000000, 2200000, 2500000, 1500000)
        .with_fill(ShapeFill::new("F44336").with_transparency(25))
        .with_line(ShapeLine::new("B71C1C", 25400))
        .with_text("25% Transparent");
    
    // 50% transparent overlay
    let trans_50 = Shape::new(ShapeType::Ellipse, 4500000, 1800000, 2500000, 2000000)
        .with_fill(ShapeFill::new("4CAF50").with_transparency(50))
        .with_line(ShapeLine::new("1B5E20", 25400))
        .with_text("50% Transparent");
    
    // 75% transparent overlay
    let trans_75 = Shape::new(ShapeType::RoundedRectangle, 5500000, 2500000, 2500000, 1500000)
        .with_fill(ShapeFill::new("FF9800").with_transparency(75))
        .with_line(ShapeLine::new("E65100", 25400))
        .with_text("75% Transparent");
    
    slides.push(
        SlideContent::new("Transparency Effects - Overlapping Shapes")
            .add_shape(base)
            .add_shape(trans_25)
            .add_shape(trans_50)
            .add_shape(trans_75)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 12: Styled Connectors (NEW)
    // =========================================================================
    println!("🔗 Slide 12: Styled Connectors");
    
    // Create shapes to connect
    let box1 = Shape::new(ShapeType::RoundedRectangle, 500000, 1800000, 1800000, 800000)
        .with_id(100)
        .with_fill(ShapeFill::new("1565C0"))
        .with_text("Start");
    
    let box2 = Shape::new(ShapeType::RoundedRectangle, 3500000, 1800000, 1800000, 800000)
        .with_id(101)
        .with_fill(ShapeFill::new("2E7D32"))
        .with_text("Process");
    
    let box3 = Shape::new(ShapeType::RoundedRectangle, 6500000, 1800000, 1800000, 800000)
        .with_id(102)
        .with_fill(ShapeFill::new("C62828"))
        .with_text("End");
    
    // Straight connector with arrow
    let conn1 = Connector::straight(2300000, 2200000, 3500000, 2200000)
        .with_line(ConnectorLine::new("1565C0", 25400))
        .with_end_arrow(ArrowType::Triangle)
        .with_arrow_size(ArrowSize::Large);
    
    // Elbow connector with stealth arrow
    let conn2 = Connector::elbow(5300000, 2200000, 6500000, 2200000)
        .with_line(ConnectorLine::new("2E7D32", 38100).with_dash(LineDash::Dash))
        .with_end_arrow(ArrowType::Stealth)
        .with_arrow_size(ArrowSize::Medium);
    
    // Curved connector examples
    let box4 = Shape::new(ShapeType::Ellipse, 1000000, 3200000, 1500000, 800000)
        .with_id(103)
        .with_fill(ShapeFill::new("7B1FA2"))
        .with_text("A");
    
    let box5 = Shape::new(ShapeType::Ellipse, 4000000, 3200000, 1500000, 800000)
        .with_id(104)
        .with_fill(ShapeFill::new("00838F"))
        .with_text("B");
    
    let box6 = Shape::new(ShapeType::Ellipse, 7000000, 3200000, 1500000, 800000)
        .with_id(105)
        .with_fill(ShapeFill::new("EF6C00"))
        .with_text("C");
    
    // Curved connector with diamond arrow
    let conn3 = Connector::curved(2500000, 3600000, 4000000, 3600000)
        .with_line(ConnectorLine::new("7B1FA2", 19050).with_dash(LineDash::DashDot))
        .with_arrows(ArrowType::Oval, ArrowType::Diamond);
    
    // Dotted connector
    let conn4 = Connector::straight(5500000, 3600000, 7000000, 3600000)
        .with_line(ConnectorLine::new("00838F", 12700).with_dash(LineDash::Dot))
        .with_end_arrow(ArrowType::Open);
    
    slides.push(
        SlideContent::new("Styled Connectors - Types, Arrows, Dashes")
            .add_shape(box1)
            .add_shape(box2)
            .add_shape(box3)
            .add_shape(box4)
            .add_shape(box5)
            .add_shape(box6)
            .add_connector(conn1)
            .add_connector(conn2)
            .add_connector(conn3)
            .add_connector(conn4)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 13: Images
    // =========================================================================
    println!("🖼️  Slide 13: Image Placeholders");
    
    let img1 = Image::new("logo.png", 2500000, 1800000, "png")
        .position(500000, 1600000);
    let img2 = Image::new("photo.jpg", 2500000, 1800000, "jpg")
        .position(3500000, 1600000);
    let img3 = Image::new("diagram.png", 2000000, 1800000, "png")
        .position(6500000, 1600000);
    
    slides.push(
        SlideContent::new("Image Placeholders")
            .add_image(img1)
            .add_image(img2)
            .add_image(img3)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 11: Advanced Table with Borders & Alignment (NEW)
    // =========================================================================
    println!("📊 Slide 11: Advanced Table (borders, alignment, merged cells)");
    
    // Build advanced table using generator's TableBuilder with alignment
    let advanced_table = TableBuilder::new(vec![2000000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2024 Financial Report").bold().background_color("1F4E79").text_color("FFFFFF").align_center().font_size(14),
            TableCell::new("").background_color("1F4E79"),
            TableCell::new("").background_color("1F4E79"),
            TableCell::new("").background_color("1F4E79"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Category").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Revenue").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Expenses").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Profit").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Product Sales").text_color("000000").align_left(),
            TableCell::new("$1,250,000").text_color("2E7D32").align_right(),
            TableCell::new("$450,000").text_color("C62828").align_right(),
            TableCell::new("$800,000").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Services").text_color("000000").align_left(),
            TableCell::new("$890,000").text_color("2E7D32").align_right(),
            TableCell::new("$320,000").text_color("C62828").align_right(),
            TableCell::new("$570,000").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Total").bold().background_color("E7E6E6").text_color("000000").align_left(),
            TableCell::new("$2,140,000").bold().background_color("E7E6E6").text_color("000000").align_right(),
            TableCell::new("$770,000").bold().background_color("E7E6E6").text_color("000000").align_right(),
            TableCell::new("$1,370,000").bold().background_color("C6EFCE").text_color("006100").align_right(),
        ]))
        .position(300000, 1600000)
        .build();
    
    slides.push(
        SlideContent::new("Financial Report - Advanced Table")
            .table(advanced_table)
            .title_color("1F4E79")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 12: Comparison Matrix Table (NEW)
    // =========================================================================
    println!("📊 Slide 12: Comparison Matrix Table");
    
    let comparison_table = TableBuilder::new(vec![2000000, 1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Feature").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Basic").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Pro").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Enterprise").bold().background_color("4472C4").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Storage").text_color("000000"),
            TableCell::new("5 GB").text_color("000000"),
            TableCell::new("50 GB").text_color("000000"),
            TableCell::new("Unlimited").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Users").text_color("000000"),
            TableCell::new("1").text_color("000000"),
            TableCell::new("10").text_color("000000"),
            TableCell::new("Unlimited").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Support").text_color("000000"),
            TableCell::new("Email").text_color("000000"),
            TableCell::new("24/7 Chat").text_color("000000"),
            TableCell::new("Dedicated").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("API Access").text_color("000000"),
            TableCell::new("No").text_color("C62828"),
            TableCell::new("Yes").text_color("2E7D32"),
            TableCell::new("Yes + Priority").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Price/month").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$9").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$29").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$99").bold().background_color("F2F2F2").text_color("000000"),
        ]))
        .position(500000, 1600000)
        .build();
    
    slides.push(
        SlideContent::new("Pricing Comparison Matrix")
            .table(comparison_table)
            .title_color("4472C4")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 13: Process Flow with Shapes (NEW - SmartArt-like)
    // =========================================================================
    println!("🔷 Slide 13: Process Flow (SmartArt-style)");
    
    // Create process flow using shapes
    let step1 = Shape::new(ShapeType::RoundedRectangle, 300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("1. Research");
    let arrow1 = Shape::new(ShapeType::RightArrow, 1800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step2 = Shape::new(ShapeType::RoundedRectangle, 2300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("2. Design");
    let arrow2 = Shape::new(ShapeType::RightArrow, 3800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step3 = Shape::new(ShapeType::RoundedRectangle, 4300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("3. Develop");
    let arrow3 = Shape::new(ShapeType::RightArrow, 5800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step4 = Shape::new(ShapeType::RoundedRectangle, 6300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("5B9BD5"))
        .with_text("4. Deploy");
    
    slides.push(
        SlideContent::new("Development Process Flow")
            .add_shape(step1)
            .add_shape(arrow1)
            .add_shape(step2)
            .add_shape(arrow2)
            .add_shape(step3)
            .add_shape(arrow3)
            .add_shape(step4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 14: Organization Chart with Shapes (NEW)
    // =========================================================================
    println!("🔷 Slide 14: Organization Chart");
    
    // CEO at top
    let ceo = Shape::new(ShapeType::RoundedRectangle, 3500000, 1400000, 2000000, 600000)
        .with_fill(ShapeFill::new("1F4E79"))
        .with_text("CEO");
    
    // Vertical line from CEO
    let line1 = Shape::new(ShapeType::Rectangle, 4450000, 2000000, 100000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // Horizontal connector
    let hline = Shape::new(ShapeType::Rectangle, 1950000, 2400000, 5100000, 50000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // CTO, CFO, COO
    let cto = Shape::new(ShapeType::RoundedRectangle, 1000000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("CTO");
    let cfo = Shape::new(ShapeType::RoundedRectangle, 3600000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("CFO");
    let coo = Shape::new(ShapeType::RoundedRectangle, 6200000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("COO");
    
    // Vertical lines to departments
    let vline1 = Shape::new(ShapeType::Rectangle, 1850000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let vline2 = Shape::new(ShapeType::Rectangle, 4450000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let vline3 = Shape::new(ShapeType::Rectangle, 7050000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // Teams under CTO
    let eng = Shape::new(ShapeType::Rectangle, 500000, 3300000, 1200000, 400000)
        .with_fill(ShapeFill::new("BDD7EE"))
        .with_text("Engineering");
    let product = Shape::new(ShapeType::Rectangle, 1800000, 3300000, 1200000, 400000)
        .with_fill(ShapeFill::new("BDD7EE"))
        .with_text("Product");
    
    slides.push(
        SlideContent::new("Organization Structure")
            .add_shape(ceo)
            .add_shape(line1)
            .add_shape(hline)
            .add_shape(cto)
            .add_shape(cfo)
            .add_shape(coo)
            .add_shape(vline1)
            .add_shape(vline2)
            .add_shape(vline3)
            .add_shape(eng)
            .add_shape(product)
            .title_color("1F4E79")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 15: PDCA Cycle Diagram (NEW)
    // =========================================================================
    println!("🔷 Slide 15: PDCA Cycle Diagram");
    
    // Four quadrants for PDCA
    let plan = Shape::new(ShapeType::RoundedRectangle, 1500000, 1600000, 2500000, 1500000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("PLAN\n\nDefine goals\nand strategy");
    let do_box = Shape::new(ShapeType::RoundedRectangle, 4500000, 1600000, 2500000, 1500000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("DO\n\nImplement\nthe plan");
    let check = Shape::new(ShapeType::RoundedRectangle, 4500000, 3300000, 2500000, 1500000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("CHECK\n\nMeasure\nresults");
    let act = Shape::new(ShapeType::RoundedRectangle, 1500000, 3300000, 2500000, 1500000)
        .with_fill(ShapeFill::new("FFC000"))
        .with_text("ACT\n\nAdjust and\nimprove");
    
    // Arrows between quadrants
    let arr1 = Shape::new(ShapeType::RightArrow, 4100000, 2100000, 300000, 300000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr2 = Shape::new(ShapeType::DownArrow, 5600000, 3200000, 300000, 200000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr3 = Shape::new(ShapeType::LeftArrow, 4100000, 3800000, 300000, 300000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr4 = Shape::new(ShapeType::UpArrow, 2600000, 3200000, 300000, 200000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    slides.push(
        SlideContent::new("PDCA Continuous Improvement Cycle")
            .add_shape(plan)
            .add_shape(do_box)
            .add_shape(check)
            .add_shape(act)
            .add_shape(arr1)
            .add_shape(arr2)
            .add_shape(arr3)
            .add_shape(arr4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 16: Pyramid Diagram (Maslow's Hierarchy) (NEW)
    // =========================================================================
    println!("🔷 Slide 16: Pyramid Diagram");
    
    // Build pyramid from bottom to top
    let level5 = Shape::new(ShapeType::Trapezoid, 500000, 4000000, 8000000, 600000)
        .with_fill(ShapeFill::new("C00000"))
        .with_text("Physiological Needs - Food, Water, Shelter");
    let level4 = Shape::new(ShapeType::Trapezoid, 1000000, 3400000, 7000000, 600000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Safety Needs - Security, Stability");
    let level3 = Shape::new(ShapeType::Trapezoid, 1500000, 2800000, 6000000, 600000)
        .with_fill(ShapeFill::new("FFC000"))
        .with_text("Love & Belonging - Relationships");
    let level2 = Shape::new(ShapeType::Trapezoid, 2000000, 2200000, 5000000, 600000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Esteem - Achievement, Respect");
    let level1 = Shape::new(ShapeType::Triangle, 2500000, 1500000, 4000000, 700000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Self-Actualization");
    
    slides.push(
        SlideContent::new("Maslow's Hierarchy of Needs")
            .add_shape(level5)
            .add_shape(level4)
            .add_shape(level3)
            .add_shape(level2)
            .add_shape(level1)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 17: Venn Diagram (NEW)
    // =========================================================================
    println!("🔷 Slide 17: Venn Diagram");
    
    // Three overlapping circles
    let circle1 = Shape::new(ShapeType::Ellipse, 1500000, 1800000, 3000000, 3000000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Skills");
    let circle2 = Shape::new(ShapeType::Ellipse, 3500000, 1800000, 3000000, 3000000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Passion");
    let circle3 = Shape::new(ShapeType::Ellipse, 2500000, 3200000, 3000000, 3000000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Market Need");
    
    // Center label
    let center = Shape::new(ShapeType::Ellipse, 3200000, 2800000, 1600000, 800000)
        .with_fill(ShapeFill::new("FFFFFF"))
        .with_text("IKIGAI");
    
    slides.push(
        SlideContent::new("Finding Your Ikigai - Venn Diagram")
            .add_shape(circle1)
            .add_shape(circle2)
            .add_shape(circle3)
            .add_shape(center)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 18: Timeline/Roadmap (NEW)
    // =========================================================================
    println!("📊 Slide 18: Project Timeline");
    
    let timeline_table = TableBuilder::new(vec![1500000, 1500000, 1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q2 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q3 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q4 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q1 2025").bold().background_color("4472C4").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Research\n& Planning").background_color("BDD7EE").text_color("1F497D"),
            TableCell::new("Design\nPhase").background_color("BDD7EE").text_color("1F497D"),
            TableCell::new("Development\nSprint 1-3").background_color("C6EFCE").text_color("006100"),
            TableCell::new("Testing\n& QA").background_color("FCE4D6").text_color("C65911"),
            TableCell::new("Launch\n& Support").background_color("E2EFDA").text_color("375623"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("✓ Complete").bold().text_color("2E7D32"),
            TableCell::new("✓ Complete").bold().text_color("2E7D32"),
            TableCell::new("In Progress").text_color("ED7D31"),
            TableCell::new("Planned").text_color("7F7F7F"),
            TableCell::new("Planned").text_color("7F7F7F"),
        ]))
        .position(300000, 2000000)
        .build();
    
    slides.push(
        SlideContent::new("Project Roadmap 2024-2025")
            .table(timeline_table)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 19: Dashboard Summary (NEW)
    // =========================================================================
    println!("🔷 Slide 19: Dashboard with KPIs");
    
    // KPI boxes
    let kpi1 = Shape::new(ShapeType::RoundedRectangle, 300000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Revenue\n\n$2.14M\n+15% YoY");
    let kpi2 = Shape::new(ShapeType::RoundedRectangle, 2500000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Customers\n\n12,450\n+22% YoY");
    let kpi3 = Shape::new(ShapeType::RoundedRectangle, 4700000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("NPS Score\n\n72\n+8 pts");
    let kpi4 = Shape::new(ShapeType::RoundedRectangle, 6900000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("5B9BD5"))
        .with_text("Retention\n\n94%\n+3% YoY");
    
    // Status indicators
    let status1 = Shape::new(ShapeType::Ellipse, 1800000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    let status2 = Shape::new(ShapeType::Ellipse, 4000000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    let status3 = Shape::new(ShapeType::Ellipse, 6200000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("FFC000"));
    let status4 = Shape::new(ShapeType::Ellipse, 8400000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    
    slides.push(
        SlideContent::new("Executive Dashboard - Q1 2024")
            .add_shape(kpi1)
            .add_shape(kpi2)
            .add_shape(kpi3)
            .add_shape(kpi4)
            .add_shape(status1)
            .add_shape(status2)
            .add_shape(status3)
            .add_shape(status4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 20: Summary Slide (NEW)
    // =========================================================================
    println!("📝 Slide 20: Summary with Speaker Notes");
    
    slides.push(
        SlideContent::new("Summary & Next Steps")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Completed: Research, Design, Initial Development")
            .add_bullet("In Progress: Sprint 3 Development")
            .add_bullet("Next: QA Testing Phase (Q4 2024)")
            .add_bullet("Launch Target: Q1 2025")
            .add_bullet("Key Risks: Resource constraints, Timeline pressure")
            .content_size(24)
            .notes("Speaker Notes:\n\n1. Emphasize the progress made\n2. Highlight key achievements\n3. Address any concerns about timeline\n4. Open for Q&A")
    );

    // =========================================================================
    // SLIDE 21: Bullet Styles (NEW v0.2.1)
    // =========================================================================
    println!("🔢 Slide 21: Bullet Styles (NEW)");
    
    // Numbered list
    slides.push(
        SlideContent::new("Bullet Styles - Numbered List")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .with_bullet_style(BulletStyle::Number)
            .add_bullet("First numbered item")
            .add_bullet("Second numbered item")
            .add_bullet("Third numbered item")
            .add_bullet("Fourth numbered item")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 22: Lettered Lists (NEW v0.2.1)
    // =========================================================================
    println!("🔤 Slide 22: Lettered Lists (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Lettered Lists")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_lettered("Option A - First choice")
            .add_lettered("Option B - Second choice")
            .add_lettered("Option C - Third choice")
            .add_lettered("Option D - Fourth choice")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 23: Roman Numerals (NEW v0.2.1)
    // =========================================================================
    println!("🏛️ Slide 23: Roman Numerals (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Roman Numerals")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .with_bullet_style(BulletStyle::RomanUpper)
            .add_bullet("Chapter I - Introduction")
            .add_bullet("Chapter II - Background")
            .add_bullet("Chapter III - Methodology")
            .add_bullet("Chapter IV - Results")
            .add_bullet("Chapter V - Conclusion")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 24: Custom Bullets (NEW v0.2.1)
    // =========================================================================
    println!("⭐ Slide 24: Custom Bullets (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Custom Characters")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_styled_bullet("Star bullet point", BulletStyle::Custom('★'))
            .add_styled_bullet("Arrow bullet point", BulletStyle::Custom('→'))
            .add_styled_bullet("Check bullet point", BulletStyle::Custom('✓'))
            .add_styled_bullet("Diamond bullet point", BulletStyle::Custom('◆'))
            .add_styled_bullet("Heart bullet point", BulletStyle::Custom('♥'))
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 25: Sub-bullets / Hierarchy (NEW v0.2.1)
    // =========================================================================
    println!("📊 Slide 25: Sub-bullets Hierarchy (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Hierarchical Lists")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Main Topic 1")
            .add_sub_bullet("Supporting detail A")
            .add_sub_bullet("Supporting detail B")
            .add_bullet("Main Topic 2")
            .add_sub_bullet("Supporting detail C")
            .add_sub_bullet("Supporting detail D")
            .add_bullet("Main Topic 3")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 26: Text Enhancements (NEW v0.2.1)
    // =========================================================================
    println!("✏️ Slide 26: Text Enhancements (NEW)");
    
    // Use BulletPoint with formatting
    let strikethrough_bullet = BulletPoint::new("Strikethrough: This text is crossed out").strikethrough();
    let highlight_bullet = BulletPoint::new("Highlight: Yellow background for emphasis").highlight("FFFF00");
    let subscript_bullet = BulletPoint::new("Subscript: H₂O - for chemical formulas").subscript();
    let superscript_bullet = BulletPoint::new("Superscript: x² - for math expressions").superscript();
    let bold_colored = BulletPoint::new("Combined: Bold + Red color").bold().color("FF0000");
    
    let mut text_enhancements_slide = SlideContent::new("Text Enhancements - New Formatting")
        .layout(SlideLayout::TitleAndContent)
        .title_color("1F497D")
        .title_bold(true)
        .content_size(24);
    text_enhancements_slide.bullets.push(strikethrough_bullet);
    text_enhancements_slide.bullets.push(highlight_bullet);
    text_enhancements_slide.bullets.push(subscript_bullet);
    text_enhancements_slide.bullets.push(superscript_bullet);
    text_enhancements_slide.bullets.push(bold_colored);
    
    slides.push(text_enhancements_slide);

    // =========================================================================
    // SLIDE 27: Font Size Presets (NEW v0.2.1)
    // =========================================================================
    println!("🔤 Slide 27: Font Size Presets (NEW)");
    
    // Demonstrate different font sizes per bullet
    let large_bullet = BulletPoint::new(&format!("LARGE: {}pt - Extra large text", font_sizes::LARGE)).font_size(font_sizes::LARGE);
    let heading_bullet = BulletPoint::new(&format!("HEADING: {}pt - Section headers", font_sizes::HEADING)).font_size(font_sizes::HEADING);
    let body_bullet = BulletPoint::new(&format!("BODY: {}pt - Regular content", font_sizes::BODY)).font_size(font_sizes::BODY);
    let small_bullet = BulletPoint::new(&format!("SMALL: {}pt - Smaller text", font_sizes::SMALL)).font_size(font_sizes::SMALL);
    let caption_bullet = BulletPoint::new(&format!("CAPTION: {}pt - Captions and notes", font_sizes::CAPTION)).font_size(font_sizes::CAPTION);
    
    let mut font_size_slide = SlideContent::new("Font Size Presets - Each line different size")
        .layout(SlideLayout::TitleAndContent)
        .title_color("1F497D")
        .title_bold(true)
        .title_size(font_sizes::TITLE);
    font_size_slide.bullets.push(large_bullet);
    font_size_slide.bullets.push(heading_bullet);
    font_size_slide.bullets.push(body_bullet);
    font_size_slide.bullets.push(small_bullet);
    font_size_slide.bullets.push(caption_bullet);
    
    slides.push(font_size_slide);

    // =========================================================================
    // SLIDE 28: Theme Colors (NEW v0.2.1)
    // =========================================================================
    println!("🎨 Slide 28: Theme Colors (NEW)");
    
    // Create shapes with theme colors
    let corporate_shape = Shape::new(ShapeType::Rectangle, 500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::CORPORATE.primary))
        .with_text("Corporate");
    
    let modern_shape = Shape::new(ShapeType::Rectangle, 2500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::MODERN.primary))
        .with_text("Modern");
    
    let vibrant_shape = Shape::new(ShapeType::Rectangle, 4500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::VIBRANT.primary))
        .with_text("Vibrant");
    
    let dark_shape = Shape::new(ShapeType::Rectangle, 6500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::DARK.primary))
        .with_text("Dark");
    
    let nature_shape = Shape::new(ShapeType::Rectangle, 500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::NATURE.primary))
        .with_text("Nature");
    
    let tech_shape = Shape::new(ShapeType::Rectangle, 2500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::TECH.primary))
        .with_text("Tech");
    
    let carbon_shape = Shape::new(ShapeType::Rectangle, 4500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::CARBON.primary))
        .with_text("Carbon");
    
    slides.push(
        SlideContent::new("Theme Color Palettes")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_shape(corporate_shape)
            .add_shape(modern_shape)
            .add_shape(vibrant_shape)
            .add_shape(dark_shape)
            .add_shape(nature_shape)
            .add_shape(tech_shape)
            .add_shape(carbon_shape)
    );

    // =========================================================================
    // SLIDE 29: Material & Carbon Design Colors (NEW v0.2.1)
    // =========================================================================
    println!("🌈 Slide 29: Material & Carbon Colors (NEW)");
    
    // Material Design colors
    let material_red = Shape::new(ShapeType::Rectangle, 500000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_RED))
        .with_text("M-Red");
    
    let material_blue = Shape::new(ShapeType::Rectangle, 1900000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_BLUE))
        .with_text("M-Blue");
    
    let material_green = Shape::new(ShapeType::Rectangle, 3300000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_GREEN))
        .with_text("M-Green");
    
    let material_orange = Shape::new(ShapeType::Rectangle, 4700000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_ORANGE))
        .with_text("M-Orange");
    
    let material_purple = Shape::new(ShapeType::Rectangle, 6100000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_PURPLE))
        .with_text("M-Purple");
    
    // Carbon Design colors
    let carbon_blue = Shape::new(ShapeType::Rectangle, 500000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_BLUE_60))
        .with_text("C-Blue");
    
    let carbon_green = Shape::new(ShapeType::Rectangle, 1900000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_GREEN_50))
        .with_text("C-Green");
    
    let carbon_red = Shape::new(ShapeType::Rectangle, 3300000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_RED_60))
        .with_text("C-Red");
    
    let carbon_purple = Shape::new(ShapeType::Rectangle, 4700000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_PURPLE_60))
        .with_text("C-Purple");
    
    let carbon_gray = Shape::new(ShapeType::Rectangle, 6100000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_GRAY_100))
        .with_text("C-Gray");
    
    slides.push(
        SlideContent::new("Material & Carbon Design Colors")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_shape(material_red)
            .add_shape(material_blue)
            .add_shape(material_green)
            .add_shape(material_orange)
            .add_shape(material_purple)
            .add_shape(carbon_blue)
            .add_shape(carbon_green)
            .add_shape(carbon_red)
            .add_shape(carbon_purple)
            .add_shape(carbon_gray)
    );

    // =========================================================================
    // SLIDE 30: Image from Base64 (NEW v0.2.1)
    // =========================================================================
    println!("🖼️ Slide 30: Image from Base64 (NEW)");
    
    // 1x1 red PNG pixel in base64
    let _red_pixel_base64 = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8DwHwAFBQIAX8jx0gAAAABJRU5ErkJggg==";
    
    // Create image from base64 (demonstrating the API)
    let _base64_image = ImageBuilder::from_base64(_red_pixel_base64, 914400, 914400, "PNG")
        .position(4000000, 2500000)
        .build();
    
    slides.push(
        SlideContent::new("Image Loading - New Methods")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Image::new(path) - Load from file path")
            .add_bullet("Image::from_base64(data) - Load from base64 string")
            .add_bullet("Image::from_bytes(data) - Load from raw bytes")
            .add_bullet("ImageBuilder for fluent API configuration")
            .add_bullet("Built-in base64 decoder (no external deps)")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 31: Feature Summary (NEW v0.2.1)
    // =========================================================================
    println!("📋 Slide 31: v0.2.1 Feature Summary (NEW)");
    
    slides.push(
        SlideContent::new("New Features in v0.2.1")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_numbered("BulletStyle: Number, Letter, Roman, Custom")
            .add_numbered("TextFormat: Strikethrough, Highlight")
            .add_numbered("TextFormat: Subscript, Superscript")
            .add_numbered("Font size presets in prelude")
            .add_numbered("Image::from_base64 and from_bytes")
            .add_numbered("Theme color palettes (7 themes)")
            .add_numbered("Material & Carbon Design colors")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 32: Slide Show Settings - Comparison Table (REAL: embedded in presProps.xml)
    // =========================================================================
    println!("🎬 Slide 34: Slide Show Settings (Visual)");

    let show_speaker = SlideShowSettings::new().pen_color(PenColor::red());
    let show_kiosk = SlideShowSettings::kiosk();
    let _show_range = SlideShowSettings::new()
        .show_type(ShowType::Browsed)
        .slide_range(SlideRange::Range { start: 1, end: 10 })
        .without_animation(true);
    let _speaker_xml = show_speaker.to_xml();
    let _kiosk_xml = show_kiosk.to_xml();

    let show_table = TableBuilder::new(vec![2000000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Setting").bold().background_color("1F4E79").text_color("FFFFFF"),
            TableCell::new("Speaker").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Kiosk").bold().background_color("ED7D31").text_color("FFFFFF"),
            TableCell::new("Browsed").bold().background_color("70AD47").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Loop").bold().background_color("D6E4F0"),
            TableCell::new("No"), TableCell::new("Yes").bold().text_color("2E7D32"),
            TableCell::new("No"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Narration").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("No").text_color("C62828"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Animation").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("Yes"),
            TableCell::new("No").text_color("C62828"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Timings").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("Auto"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Slide Range").bold().background_color("D6E4F0"),
            TableCell::new("All"), TableCell::new("All"),
            TableCell::new("1-10"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Pen Color").bold().background_color("D6E4F0"),
            TableCell::new("Red").text_color("FF0000"),
            TableCell::new("Red").text_color("FF0000"),
            TableCell::new("Red").text_color("FF0000"),
        ]))
        .position(300000, 1600000)
        .build();

    // Mode icons
    let icon_speaker = Shape::new(ShapeType::RoundedRectangle, 300000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Speaker: Full control");
    let icon_kiosk = Shape::new(ShapeType::RoundedRectangle, 3100000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Kiosk: Auto-loop");
    let icon_browsed = Shape::new(ShapeType::RoundedRectangle, 5900000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Browsed: Scrollbar");

    slides.push(
        SlideContent::new("Slide Show Settings - Mode Comparison")
            .table(show_table)
            .add_shape(icon_speaker)
            .add_shape(icon_kiosk)
            .add_shape(icon_browsed)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 35: Print Settings - Visual Handout Grid
    // =========================================================================
    println!("🖨️  Slide 35: Print Settings & Handouts (Visual)");

    let print = PrintSettings::new()
        .print_what(PrintWhat::Handouts)
        .color_mode(PrintColorMode::Grayscale)
        .handout_layout(GenHandoutLayout::SlidesPerPage6)
        .frame_slides(true)
        .header("Q1 2025 Strategy Review")
        .footer("Confidential - Internal Use Only")
        .print_date(true)
        .print_page_numbers(true);
    let _prnpr_xml = print.to_prnpr_xml();
    let _handout_xml = print.to_handout_master_xml();

    // Visual: 6-slide handout grid (2 cols x 3 rows)
    let hdr = Shape::new(ShapeType::Rectangle, 300000, 1500000, 4200000, 300000)
        .with_fill(ShapeFill::new("E7E6E6"))
        .with_text("Q1 2025 Strategy Review");
    // Row 1
    let s1 = Shape::new(ShapeType::Rectangle, 400000, 2000000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 1");
    let s2 = Shape::new(ShapeType::Rectangle, 2500000, 2000000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 2");
    // Row 2
    let s3 = Shape::new(ShapeType::Rectangle, 400000, 3200000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 3");
    let s4 = Shape::new(ShapeType::Rectangle, 2500000, 3200000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 4");
    // Row 3
    let s5 = Shape::new(ShapeType::Rectangle, 400000, 4400000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 5");
    let s6 = Shape::new(ShapeType::Rectangle, 2500000, 4400000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 6");
    let ftr = Shape::new(ShapeType::Rectangle, 300000, 5600000, 4200000, 300000)
        .with_fill(ShapeFill::new("E7E6E6"))
        .with_text("Confidential - Internal Use Only");

    // Settings summary table on the right
    let print_table = TableBuilder::new(vec![1800000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Print Settings").bold().background_color("1F4E79").text_color("FFFFFF"),
            TableCell::new("").background_color("1F4E79"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Print What").bold().background_color("D6E4F0"),
            TableCell::new("Handouts"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Color Mode").bold().background_color("D6E4F0"),
            TableCell::new("Grayscale"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Layout").bold().background_color("D6E4F0"),
            TableCell::new("6 slides/page"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Frame Slides").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Date").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Page Numbers").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .position(5000000, 1800000)
        .build();

    slides.push(
        SlideContent::new("Print Handout - 6 Slides Per Page")
            .table(print_table)
            .add_shape(hdr)
            .add_shape(s1).add_shape(s2)
            .add_shape(s3).add_shape(s4)
            .add_shape(s5).add_shape(s6)
            .add_shape(ftr)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 36: Advanced Table Merging - Actual Merged Table
    // =========================================================================
    println!("📊 Slide 36: Advanced Table Merging (Visual)");

    // Use TableMergeMap to compute states, then build a visual table
    let mut merge_map = TableMergeMap::new(5, 4);
    merge_map.merge_cells(0, 0, 1, 4).unwrap(); // Title row spans all 4 cols
    merge_map.merge_cells(1, 0, 2, 1).unwrap(); // "Products" spans 2 rows
    merge_map.merge_cells(3, 0, 2, 1).unwrap(); // "Services" spans 2 rows

    // Show merge state labels
    let state_00 = merge_map.cell_state(0, 0); // Anchor gridSpan=4
    let state_01 = merge_map.cell_state(0, 1); // HMerge
    let state_10 = merge_map.cell_state(1, 0); // Anchor rowSpan=2
    let state_20 = merge_map.cell_state(2, 0); // VMerge
    println!("   ├── (0,0): {}", state_00.to_xml_attrs().trim());
    println!("   ├── (0,1): {}", state_01.to_xml_attrs().trim());
    println!("   ├── (1,0): {}", state_10.to_xml_attrs().trim());
    println!("   └── (2,0): {}", state_20.to_xml_attrs().trim());

    // Build the table with REAL merge attributes (gridSpan, rowSpan, hMerge, vMerge)
    let merge_table = TableBuilder::new(vec![1500000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2025 Revenue Report").bold().background_color("1F4E79").text_color("FFFFFF").grid_span(4),
            TableCell::new("").background_color("1F4E79").h_merge(),
            TableCell::new("").background_color("1F4E79").h_merge(),
            TableCell::new("").background_color("1F4E79").h_merge(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Products").bold().background_color("BDD7EE").text_color("1F497D").row_span(2),
            TableCell::new("Hardware").background_color("E2EFDA"),
            TableCell::new("$450,000").text_color("2E7D32").align_right(),
            TableCell::new("+12%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("").background_color("BDD7EE").v_merge(),
            TableCell::new("Software").background_color("E2EFDA"),
            TableCell::new("$680,000").text_color("2E7D32").align_right(),
            TableCell::new("+25%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Services").bold().background_color("FCE4D6").text_color("C65911").row_span(2),
            TableCell::new("Consulting").background_color("FFF2CC"),
            TableCell::new("$320,000").text_color("2E7D32").align_right(),
            TableCell::new("+8%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("").background_color("FCE4D6").v_merge(),
            TableCell::new("Support").background_color("FFF2CC"),
            TableCell::new("$190,000").text_color("2E7D32").align_right(),
            TableCell::new("+5%").bold().text_color("2E7D32").align_right(),
        ]))
        .position(300000, 1600000)
        .build();

    // Legend shapes
    let legend_anchor = Shape::new(ShapeType::RoundedRectangle, 300000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Anchor (gridSpan/rowSpan)");
    let legend_hmerge = Shape::new(ShapeType::RoundedRectangle, 2500000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("hMerge (col covered)");
    let legend_vmerge = Shape::new(ShapeType::RoundedRectangle, 4700000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("vMerge (row covered)");
    let legend_normal = Shape::new(ShapeType::RoundedRectangle, 6900000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"))
        .with_text("Normal (no merge)");

    slides.push(
        SlideContent::new("Advanced Table Merging - Merged Cells")
            .table(merge_table)
            .add_shape(legend_anchor)
            .add_shape(legend_hmerge)
            .add_shape(legend_vmerge)
            .add_shape(legend_normal)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // Build PresentationSettings with all advanced features
    // =========================================================================
    println!("\n⚙️  Building Presentation Settings...");

    // Slide show settings (embedded in presProps.xml as <p:showPr>)
    let show_settings = SlideShowSettings::new()
        .show_type(ShowType::Speaker)
        .pen_color(PenColor::red())
        .use_timings(true);
    println!("   ├── Slide Show: Speaker mode, red pen, timings enabled");
    println!("   │   └── XML: {} bytes", show_settings.to_xml().len());

    // Print settings (embedded in presProps.xml as <p:prnPr>)
    let print_settings = PrintSettings::new()
        .print_what(PrintWhat::Handouts)
        .color_mode(PrintColorMode::Grayscale)
        .handout_layout(GenHandoutLayout::SlidesPerPage6)
        .frame_slides(true)
        .header("Q1 2025 Strategy Review")
        .footer("Confidential - Internal Use Only")
        .print_date(true)
        .print_page_numbers(true);
    println!("   └── Print: Handouts, 6/page, grayscale, framed");
    println!("       └── XML: {} bytes", print_settings.to_prnpr_xml().len());

    let pres_settings = PresentationSettings::new()
        .slide_show(show_settings)
        .print(print_settings);
    println!("   All settings configured → presProps.xml");

    // =========================================================================
    // Generate PPTX with real integrated features
    // =========================================================================
    println!("\n📦 Generating PPTX with integrated features...");
    let pptx_data = create_pptx_with_settings(
        "PPTX-RS Element Showcase",
        slides.clone(),
        Some(pres_settings),
    )?;
    fs::write("comprehensive_demo.pptx", &pptx_data)?;
    println!("   ✓ Created comprehensive_demo.pptx ({} slides, {} bytes)", 
             slides.len(), pptx_data.len());

    // =========================================================================
    // Package Analysis - Demonstrate Reading
    // =========================================================================
    println!("\n📖 Package Analysis (Read Capability):");
    
    let package = Package::open("comprehensive_demo.pptx")?;
    let paths = package.part_paths();
    
    let slide_count = paths.iter()
        .filter(|p| p.starts_with("ppt/slides/slide") && p.ends_with(".xml"))
        .count();
    
    println!("   ├── Total parts: {}", package.part_count());
    println!("   ├── Slides: {}", slide_count);
    println!("   └── Package opened and analyzed successfully");

    // =========================================================================
    // NEW: Parts API Demonstration
    // =========================================================================
    println!("\n🧩 Parts API Demonstration:");
    
    // SlideLayoutPart - 11 layout types
    println!("   ┌── SlideLayoutPart (11 layout types):");
    let layouts = [
        LayoutType::Title,
        LayoutType::TitleAndContent,
        LayoutType::SectionHeader,
        LayoutType::TwoContent,
        LayoutType::Comparison,
        LayoutType::TitleOnly,
        LayoutType::Blank,
        LayoutType::ContentWithCaption,
        LayoutType::PictureWithCaption,
        LayoutType::TitleAndVerticalText,
        LayoutType::VerticalTitleAndText,
    ];
    for (i, layout_type) in layouts.iter().enumerate() {
        let layout = SlideLayoutPart::new(i + 1, *layout_type);
        if i < 3 {
            println!("   │   ├── {}: {} ({})", i + 1, layout_type.name(), layout.path());
        }
    }
    println!("   │   └── ... and {} more layout types", layouts.len() - 3);
    
    // SlideMasterPart
    println!("   ├── SlideMasterPart:");
    let mut master = SlideMasterPart::new(1);
    master.set_name("Custom Master");
    master.add_layout_rel_id("rId2");
    master.add_layout_rel_id("rId3");
    println!("   │   ├── Name: {}", master.name());
    println!("   │   ├── Path: {}", master.path());
    println!("   │   └── Layouts: {} linked", master.layout_rel_ids().len());
    
    // ThemePart - Colors and Fonts
    println!("   ├── ThemePart (colors & fonts):");
    let mut theme = ThemePart::new(1);
    theme.set_name("Corporate Theme");
    theme.set_major_font("Arial");
    theme.set_minor_font("Calibri");
    theme.set_color("accent1", "FF5733");
    theme.set_color("accent2", "33FF57");
    let theme_xml = theme.to_xml()?;
    println!("   │   ├── Name: {}", theme.name());
    println!("   │   ├── Major Font: Arial");
    println!("   │   ├── Minor Font: Calibri");
    println!("   │   └── XML size: {} bytes", theme_xml.len());
    
    // NotesSlidePart - Speaker notes
    println!("   ├── NotesSlidePart (speaker notes):");
    let notes = NotesSlidePart::with_text(1, "Remember to:\n- Introduce yourself\n- Explain the agenda\n- Ask for questions");
    let notes_xml = notes.to_xml()?;
    println!("   │   ├── Path: {}", notes.path());
    println!("   │   ├── Text: \"{}...\"", &notes.notes_text()[..20.min(notes.notes_text().len())]);
    println!("   │   └── XML size: {} bytes", notes_xml.len());
    
    // AppPropertiesPart - Application metadata
    println!("   ├── AppPropertiesPart (metadata):");
    let mut app_props = AppPropertiesPart::new();
    app_props.set_company("Acme Corporation");
    app_props.set_slides(slides.len() as u32);
    let app_xml = app_props.to_xml()?;
    println!("   │   ├── Company: Acme Corporation");
    println!("   │   ├── Slides: {}", slides.len());
    println!("   │   └── XML size: {} bytes", app_xml.len());
    
    // MediaPart - Video/Audio formats
    println!("   ├── MediaPart (10 media formats):");
    println!("   │   ├── Video: mp4, webm, avi, wmv, mov");
    println!("   │   ├── Audio: mp3, wav, wma, m4a, ogg");
    let sample_media = MediaPart::new(1, MediaFormat::Mp4, vec![0; 100]);
    println!("   │   └── Sample: {} ({})", sample_media.path(), sample_media.format().mime_type());
    
    // TablePart - Table with formatting
    println!("   ├── TablePart (cell formatting):");
    let table_part = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Header 1").bold().background("4472C4"),
            TableCellPart::new("Header 2").bold().background("4472C4"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Data 1").color("333333"),
            TableCellPart::new("Data 2").italic(),
        ]))
        .position(EMU_PER_INCH, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 6, EMU_PER_INCH * 2);
    let table_xml = table_part.to_slide_xml(10);
    println!("   │   ├── Rows: {}", table_part.rows.len());
    println!("   │   ├── Features: bold, italic, colors, backgrounds");
    println!("   │   └── XML size: {} bytes", table_xml.len());
    
    // ContentTypesPart
    println!("   └── ContentTypesPart:");
    let mut content_types = ContentTypesPart::new();
    content_types.add_presentation();
    content_types.add_slide(1);
    content_types.add_slide_layout(1);
    content_types.add_slide_master(1);
    content_types.add_theme(1);
    content_types.add_core_properties();
    content_types.add_app_properties();
    let ct_xml = content_types.to_xml()?;
    println!("       ├── Path: {}", content_types.path());
    println!("       └── XML size: {} bytes", ct_xml.len());

    // =========================================================================
    // NEW: Elements API Demonstration
    // =========================================================================
    println!("\n🎨 Elements API Demonstration:");
    
    // Color types
    println!("   ┌── Color Types:");
    let rgb = RgbColor::new(255, 87, 51);
    let rgb_hex = RgbColor::from_hex("#4472C4").unwrap();
    let scheme = SchemeColor::Accent1;
    let color = Color::rgb(100, 149, 237);
    println!("   │   ├── RgbColor::new(255, 87, 51) → {}", rgb.to_hex());
    println!("   │   ├── RgbColor::from_hex(\"#4472C4\") → {}", rgb_hex.to_hex());
    println!("   │   ├── SchemeColor::Accent1 → {}", scheme.as_str());
    println!("   │   └── Color::rgb(100, 149, 237) → XML: {}", color.to_xml().chars().take(30).collect::<String>());
    
    // Position and Size
    println!("   ├── Position & Size (EMU units):");
    let pos = Position::from_inches(1.0, 2.0);
    let size = Size::from_inches(4.0, 3.0);
    println!("   │   ├── Position::from_inches(1.0, 2.0) → x={}, y={}", pos.x, pos.y);
    println!("   │   ├── Size::from_inches(4.0, 3.0) → w={}, h={}", size.width, size.height);
    println!("   │   └── EMU_PER_INCH = {}", EMU_PER_INCH);
    
    // Transform
    println!("   └── Transform (position + size + rotation):");
    let transform = Transform::from_inches(1.0, 1.5, 3.0, 2.0).with_rotation(45.0);
    let transform_xml = transform.to_xml();
    println!("       ├── Transform::from_inches(1.0, 1.5, 3.0, 2.0)");
    println!("       ├── .with_rotation(45.0)");
    println!("       └── XML: {}...", &transform_xml[..50.min(transform_xml.len())]);

    // =========================================================================
    // NEW: Advanced Features Demonstration
    // =========================================================================
    println!("\n🚀 Advanced Features Demonstration:");

    // -------------------------------------------------------------------------
    // Complex Table Examples
    // -------------------------------------------------------------------------
    println!("   ┌── Complex Table Examples:");
    
    // Example 1: Financial Report Table
    println!("   │   ┌── Financial Report Table (5x4 with formatting):");
    let financial_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Q1 2024 Financial Summary")
                .col_span(4)
                .bold()
                .center()
                .background("1F4E79")
                .color("FFFFFF")
                .font_size(14)
                .font("Arial Black"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Category").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Revenue").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Expenses").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Profit").bold().center().background("2E75B6").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Product Sales").align(HorizontalAlign::Left),
            TableCellPart::new("$1,250,000").align(HorizontalAlign::Right).color("2E7D32"),
            TableCellPart::new("$450,000").align(HorizontalAlign::Right).color("C62828"),
            TableCellPart::new("$800,000").align(HorizontalAlign::Right).bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Services").align(HorizontalAlign::Left),
            TableCellPart::new("$890,000").align(HorizontalAlign::Right).color("2E7D32"),
            TableCellPart::new("$320,000").align(HorizontalAlign::Right).color("C62828"),
            TableCellPart::new("$570,000").align(HorizontalAlign::Right).bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Total").bold().background("E7E6E6"),
            TableCellPart::new("$2,140,000").bold().align(HorizontalAlign::Right).background("E7E6E6"),
            TableCellPart::new("$770,000").bold().align(HorizontalAlign::Right).background("E7E6E6"),
            TableCellPart::new("$1,370,000").bold().align(HorizontalAlign::Right).background("C6EFCE").color("006100"),
        ]))
        .position(EMU_PER_INCH / 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 8, EMU_PER_INCH * 3);
    let fin_xml = financial_table.to_slide_xml(100);
    println!("   │   │   ├── Merged header spanning 4 columns");
    println!("   │   │   ├── Color-coded values (green=positive, red=negative)");
    println!("   │   │   ├── Custom fonts and sizes");
    println!("   │   │   └── XML: {} bytes", fin_xml.len());

    // Example 2: Comparison Matrix
    println!("   │   ├── Comparison Matrix (features vs products):");
    let matrix_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Feature").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Basic").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Pro").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Enterprise").bold().center().background("4472C4").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Storage").align(HorizontalAlign::Left),
            TableCellPart::new("5 GB").center(),
            TableCellPart::new("50 GB").center(),
            TableCellPart::new("Unlimited").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Users").align(HorizontalAlign::Left),
            TableCellPart::new("1").center(),
            TableCellPart::new("10").center(),
            TableCellPart::new("Unlimited").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Support").align(HorizontalAlign::Left),
            TableCellPart::new("Email").center(),
            TableCellPart::new("24/7 Chat").center(),
            TableCellPart::new("Dedicated").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Price/mo").bold().background("F2F2F2"),
            TableCellPart::new("$9").center().bold().background("F2F2F2"),
            TableCellPart::new("$29").center().bold().background("F2F2F2"),
            TableCellPart::new("$99").center().bold().background("F2F2F2"),
        ]));
    println!("   │   │   └── 5x4 matrix with alternating styles");

    // Example 3: Schedule/Timeline Table
    println!("   │   └── Schedule Table (with row spans):");
    let schedule_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Time").bold().center().background("70AD47").color("FFFFFF"),
            TableCellPart::new("Monday").bold().center().background("70AD47").color("FFFFFF"),
            TableCellPart::new("Tuesday").bold().center().background("70AD47").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("9:00 AM").center().background("E2EFDA"),
            TableCellPart::new("Team Standup").center().row_span(2).valign(VerticalAlign::Middle).background("BDD7EE"),
            TableCellPart::new("Code Review").center(),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("10:00 AM").center().background("E2EFDA"),
            TableCellPart::merged(),
            TableCellPart::new("Sprint Planning").center().background("FCE4D6"),
        ]));
    println!("   │       └── Row spans for multi-hour events");

    // -------------------------------------------------------------------------
    // Complex Animation Sequences
    // -------------------------------------------------------------------------
    println!("   ├── Complex Animation Sequences:");
    
    // Sequence 1: Title entrance with staggered content
    println!("   │   ┌── Staggered Entrance Sequence:");
    let title_anim = Animation::new(2, AnimationEffect::Fade)
        .trigger(AnimationTrigger::OnClick)
        .duration(500);
    let content1 = Animation::new(3, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(200);
    let content2 = Animation::new(4, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(100);
    let content3 = Animation::new(5, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(100);
    let staggered = SlideAnimations::new()
        .add(title_anim)
        .add(content1)
        .add(content2)
        .add(content3)
        .transition(SlideTransition::new(TransitionEffect::Push).direction(AnimationDirection::Left).duration(750));
    let staggered_xml = staggered.to_timing_xml()?;
    println!("   │   │   ├── Title: Fade on click");
    println!("   │   │   ├── Content 1-3: FlyIn with 100ms stagger");
    println!("   │   │   ├── Transition: Push from left (750ms)");
    println!("   │   │   └── XML: {} bytes", staggered_xml.len());

    // Sequence 2: Emphasis and exit
    println!("   │   ├── Emphasis + Exit Sequence:");
    let emphasis = Animation::new(6, AnimationEffect::Pulse)
        .trigger(AnimationTrigger::OnClick)
        .duration(1000)
        .repeat(3);
    let exit = Animation::new(6, AnimationEffect::FadeOut)
        .trigger(AnimationTrigger::AfterPrevious)
        .duration(500);
    let emphasis_seq = SlideAnimations::new()
        .add(emphasis)
        .add(exit);
    println!("   │   │   ├── Pulse 3x on click, then fade out");
    println!("   │   │   └── Same shape, sequential effects");

    // Sequence 3: Motion path
    println!("   │   └── Motion Path Animation:");
    let motion = Animation::new(7, AnimationEffect::Lines)
        .trigger(AnimationTrigger::OnClick)
        .duration(2000);
    println!("   │       └── Custom path: Lines, Arcs, Turns, Loops");

    // -------------------------------------------------------------------------
    // SmartArt Combinations
    // -------------------------------------------------------------------------
    println!("   ├── SmartArt Layout Examples:");
    
    // Process flow
    println!("   │   ┌── Process Flow (5 steps):");
    let process = SmartArtPart::new(1, SmartArtLayout::BasicProcess)
        .add_items(vec!["Research", "Design", "Develop", "Test", "Deploy"])
        .position(EMU_PER_INCH / 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 8, EMU_PER_INCH * 2);
    println!("   │   │   └── {} nodes in horizontal flow", process.nodes().len());

    // Organization chart
    println!("   │   ├── Organization Chart:");
    let org = SmartArtPart::new(2, SmartArtLayout::OrgChart)
        .add_items(vec!["CEO", "CTO", "CFO", "VP Engineering", "VP Sales"]);
    println!("   │   │   └── Hierarchical structure with {} positions", org.nodes().len());

    // Cycle diagram
    println!("   │   ├── Cycle Diagram:");
    let cycle = SmartArtPart::new(3, SmartArtLayout::BasicCycle)
        .add_items(vec!["Plan", "Do", "Check", "Act"]);
    println!("   │   │   └── PDCA cycle with {} phases", cycle.nodes().len());

    // Venn diagram
    println!("   │   ├── Venn Diagram:");
    let venn = SmartArtPart::new(4, SmartArtLayout::BasicVenn)
        .add_items(vec!["Skills", "Passion", "Market Need"]);
    println!("   │   │   └── 3-circle Venn for Ikigai concept");

    // Pyramid
    println!("   │   └── Pyramid:");
    let pyramid = SmartArtPart::new(5, SmartArtLayout::BasicPyramid)
        .add_items(vec!["Self-Actualization", "Esteem", "Love/Belonging", "Safety", "Physiological"]);
    println!("   │       └── Maslow's hierarchy with {} levels", pyramid.nodes().len());

    // -------------------------------------------------------------------------
    // 3D Model Configurations
    // -------------------------------------------------------------------------
    println!("   ├── 3D Model Configurations:");
    
    // Product showcase
    println!("   │   ┌── Product Showcase:");
    let product_3d = Model3DPart::new(1, Model3DFormat::Glb, vec![0; 100])
        .camera(CameraPreset::IsometricTopUp)
        .rotation(0.0, 45.0, 0.0)
        .zoom(1.2)
        .position(EMU_PER_INCH * 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 4, EMU_PER_INCH * 4);
    println!("   │   │   ├── Camera: Isometric top-up view");
    println!("   │   │   ├── Rotation: 45° Y-axis for best angle");
    println!("   │   │   └── Zoom: 1.2x for detail");

    // Architectural model
    println!("   │   ├── Architectural Model:");
    let arch_3d = Model3DPart::new(2, Model3DFormat::Gltf, vec![0; 100])
        .camera(CameraPreset::Front)
        .rotation(15.0, -30.0, 0.0)
        .ambient_light("FFFFCC");
    println!("   │   │   ├── Camera: Front view with tilt");
    println!("   │   │   └── Ambient: Warm lighting (FFFFCC)");

    // Technical diagram
    println!("   │   └── Technical Diagram:");
    let tech_3d = Model3DPart::new(3, Model3DFormat::Obj, vec![0; 100])
        .camera(CameraPreset::IsometricOffAxis1Top)
        .rotation(0.0, 0.0, 0.0);
    println!("   │       └── Camera: Off-axis isometric for exploded view");

    // -------------------------------------------------------------------------
    // Theme + Master + Layout Combination
    // -------------------------------------------------------------------------
    println!("   ├── Theme + Master + Layout Integration:");
    
    // Corporate theme
    let mut corp_theme = ThemePart::new(1);
    corp_theme.set_name("Corporate Blue");
    corp_theme.set_major_font("Segoe UI");
    corp_theme.set_minor_font("Segoe UI Light");
    corp_theme.set_color("dk1", "000000");
    corp_theme.set_color("lt1", "FFFFFF");
    corp_theme.set_color("dk2", "1F497D");
    corp_theme.set_color("lt2", "EEECE1");
    corp_theme.set_color("accent1", "4472C4");
    corp_theme.set_color("accent2", "ED7D31");
    corp_theme.set_color("accent3", "A5A5A5");
    corp_theme.set_color("accent4", "FFC000");
    corp_theme.set_color("accent5", "5B9BD5");
    corp_theme.set_color("accent6", "70AD47");
    let theme_xml = corp_theme.to_xml()?;
    println!("   │   ├── Theme: Corporate Blue");
    println!("   │   │   ├── Fonts: Segoe UI / Segoe UI Light");
    println!("   │   │   ├── 12 color slots defined");
    println!("   │   │   └── XML: {} bytes", theme_xml.len());

    // Master with multiple layouts
    let mut corp_master = SlideMasterPart::new(1);
    corp_master.set_name("Corporate Master");
    corp_master.add_layout_rel_id("rId2"); // Title
    corp_master.add_layout_rel_id("rId3"); // Title + Content
    corp_master.add_layout_rel_id("rId4"); // Section Header
    corp_master.add_layout_rel_id("rId5"); // Two Content
    corp_master.add_layout_rel_id("rId6"); // Comparison
    corp_master.add_layout_rel_id("rId7"); // Title Only
    corp_master.add_layout_rel_id("rId8"); // Blank
    println!("   │   └── Master: {} with {} layouts linked", corp_master.name(), corp_master.layout_rel_ids().len());

    // -------------------------------------------------------------------------
    // VBA + Custom XML Integration
    // -------------------------------------------------------------------------
    println!("   ├── VBA + Custom XML Integration:");
    
    // VBA with multiple modules
    let vba_project = VbaProjectPart::new()
        .add_module(VbaModule::new("AutoRun", r#"
Sub Auto_Open()
    MsgBox "Welcome to the presentation!"
End Sub

Sub NavigateToSlide(slideNum As Integer)
    SlideShowWindows(1).View.GotoSlide slideNum
End Sub
"#))
        .add_module(VbaModule::new("DataHelpers", r#"
Function GetCustomData(key As String) As String
    ' Read from Custom XML part
    GetCustomData = ActivePresentation.CustomXMLParts(1).SelectSingleNode("//" & key).Text
End Function
"#))
        .add_module(VbaModule::class("SlideController", r#"
Private currentSlide As Integer

Public Sub NextSlide()
    currentSlide = currentSlide + 1
    NavigateToSlide currentSlide
End Sub
"#));
    println!("   │   ├── VBA Project:");
    println!("   │   │   ├── AutoRun: Auto_Open, NavigateToSlide");
    println!("   │   │   ├── DataHelpers: GetCustomData (reads Custom XML)");
    println!("   │   │   └── SlideController: Class for navigation");

    // Custom XML with structured data
    let app_config = CustomXmlPart::new(1, "presentationConfig")
        .namespace("http://company.com/pptx/config")
        .property("version", "2.1.0")
        .property("author", "Demo User")
        .property("department", "Engineering")
        .property("confidentiality", "Internal")
        .property("lastModified", "2024-01-15T10:30:00Z");
    let config_xml = app_config.to_xml()?;
    println!("   │   └── Custom XML:");
    println!("   │       ├── Namespace: http://company.com/pptx/config");
    println!("   │       ├── Properties: version, author, department, etc.");
    println!("   │       └── XML: {} bytes", config_xml.len());

    // -------------------------------------------------------------------------
    // Embedded Fonts with Variants
    // -------------------------------------------------------------------------
    println!("   ├── Embedded Font Collection:");
    let mut font_collection = EmbeddedFontCollection::new();
    font_collection.add("Corporate Sans", vec![0; 1000]);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::Bold);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::Italic);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::BoldItalic);
    font_collection.add("Code Mono", vec![0; 800]);
    let fonts_xml = font_collection.to_xml();
    println!("   │   ├── Corporate Sans: Regular, Bold, Italic, BoldItalic");
    println!("   │   ├── Code Mono: Regular");
    println!("   │   ├── Total: {} font files", font_collection.len());
    println!("   │   └── XML: {} bytes", fonts_xml.len());

    // -------------------------------------------------------------------------
    // Handout with Full Configuration
    // -------------------------------------------------------------------------
    println!("   └── Handout Master Configuration:");
    let handout = HandoutMasterPart::new()
        .layout(HandoutLayout::SlidesPerPage6)
        .header("Q1 2024 Strategy Review")
        .footer("Confidential - Internal Use Only");
    let handout_xml = handout.to_xml()?;
    println!("       ├── Layout: 6 slides per page");
    println!("       ├── Header: Q1 2024 Strategy Review");
    println!("       ├── Footer: Confidential - Internal Use Only");
    println!("       └── XML: {} bytes", handout_xml.len());

    // =========================================================================
    // Summary
    // =========================================================================
    println!("\n╔══════════════════════════════════════════════════════════════╗");
    println!("║                    Element Coverage Summary                   ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  LAYOUTS (6 types):                                          ║");
    println!("║    ✓ CenteredTitle    ✓ TitleOnly      ✓ TitleAndContent     ║");
    println!("║    ✓ TitleAndBigContent  ✓ TwoColumn   ✓ Blank               ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  TEXT FORMATTING:                                            ║");
    println!("║    ✓ Bold            ✓ Italic         ✓ Underline            ║");
    println!("║    ✓ Font Size       ✓ Font Color     ✓ Title/Content styles ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  TABLES:                                                     ║");
    println!("║    ✓ Multiple rows/columns  ✓ Bold cells  ✓ Background colors║");
    println!("║    ✓ Header styling         ✓ Position control               ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  CHARTS:                                                     ║");
    println!("║    ✓ Bar Chart       ✓ Line Chart     ✓ Pie Chart            ║");
    println!("║    ✓ Multiple series ✓ Categories                            ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  SHAPES:                                                     ║");
    println!("║    ✓ Rectangle       ✓ Ellipse        ✓ RoundedRectangle     ║");
    println!("║    ✓ Triangle        ✓ Diamond        ✓ Color fills          ║");
    println!("║    ✓ Gradient fills  ✓ Transparency   ✓ Text in shapes       ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  CONNECTORS (NEW):                                           ║");
    println!("║    ✓ Straight        ✓ Elbow          ✓ Curved               ║");
    println!("║    ✓ Arrow types     ✓ Dash styles    ✓ Line colors/widths   ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  IMAGES:                                                     ║");
    println!("║    ✓ Image placeholders  ✓ Position   ✓ Dimensions           ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  PACKAGE:                                                    ║");
    println!("║    ✓ Create PPTX     ✓ Read PPTX      ✓ Analyze contents     ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  PARTS API (NEW):                                            ║");
    println!("║    ✓ SlideLayoutPart (11 types)  ✓ SlideMasterPart           ║");
    println!("║    ✓ ThemePart (colors/fonts)    ✓ NotesSlidePart            ║");
    println!("║    ✓ AppPropertiesPart           ✓ MediaPart (10 formats)    ║");
    println!("║    ✓ TablePart (cell formatting) ✓ ContentTypesPart          ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  ELEMENTS API:                                               ║");
    println!("║    ✓ RgbColor        ✓ SchemeColor    ✓ Color enum           ║");
    println!("║    ✓ Position        ✓ Size           ✓ Transform            ║");
    println!("║    ✓ EMU conversions (inches, cm, mm, pt)                    ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  ADVANCED FEATURES (NEW):                                    ║");
    println!("║    ✓ Animation (50+ effects)  ✓ Transitions (27 types)       ║");
    println!("║    ✓ SmartArt (25 layouts)    ✓ 3D Models (GLB/GLTF/OBJ)     ║");
    println!("║    ✓ VBA Macros (.pptm)       ✓ Embedded Fonts               ║");
    println!("║    ✓ Custom XML               ✓ Handout Master               ║");
    println!("║    ✓ Table borders/alignment  ✓ Merged cells                 ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  Output: comprehensive_demo.pptx ({} slides, {} KB)         ║", 
             slides.len(), pptx_data.len() / 1024);
    println!("╚══════════════════════════════════════════════════════════════╝");

    Ok(())
}

pub fn with_table(self) -> Self

pub fn with_chart(self) -> Self

Examples found in repository

examples/comprehensive_demo.rs (line 223)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    println!("╔══════════════════════════════════════════════════════════════╗");
    println!("║       PPTX-RS Element Showcase - Complete Coverage           ║");
    println!("╚══════════════════════════════════════════════════════════════╝\n");

    let mut slides = Vec::new();

    // =========================================================================
    // SLIDE 1: CenteredTitle Layout + Title Formatting
    // =========================================================================
    println!("📐 Slide 1: CenteredTitle Layout + Title Formatting");
    slides.push(
        SlideContent::new("PPTX-RS Element Showcase")
            .layout(SlideLayout::CenteredTitle)
            .title_size(54)
            .title_bold(true)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 2: TitleOnly Layout
    // =========================================================================
    println!("📐 Slide 2: TitleOnly Layout");
    slides.push(
        SlideContent::new("Section: Slide Layouts")
            .layout(SlideLayout::TitleOnly)
            .title_size(48)
            .title_bold(true)
            .title_color("C0504D")
    );

    // =========================================================================
    // SLIDE 3: TitleAndContent Layout + All Text Formatting
    // =========================================================================
    println!("📝 Slide 3: TitleAndContent + Text Formatting");
    slides.push(
        SlideContent::new("Text Formatting Options")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .title_italic(true)
            .title_underline(true)
            .title_size(44)
            .add_bullet("Normal text (default)")
            .add_bullet("Bold content text")
            .add_bullet("Italic content text")
            .add_bullet("Underlined content")
            .add_bullet("Custom font size (28pt)")
            .add_bullet("Custom color (#4F81BD)")
            .content_bold(true)
            .content_italic(true)
            .content_underline(true)
            .content_size(28)
            .content_color("4F81BD")
    );

    // =========================================================================
    // SLIDE 4: TitleAndBigContent Layout
    // =========================================================================
    println!("📐 Slide 4: TitleAndBigContent Layout");
    slides.push(
        SlideContent::new("Key Highlights")
            .layout(SlideLayout::TitleAndBigContent)
            .title_color("1F497D")
            .add_bullet("Large content area for emphasis")
            .add_bullet("Perfect for key messages")
            .add_bullet("Smaller title, bigger content")
            .content_bold(true)
            .content_size(32)
    );

    // =========================================================================
    // SLIDE 5: TwoColumn Layout
    // =========================================================================
    println!("📐 Slide 5: TwoColumn Layout");
    slides.push(
        SlideContent::new("Two Column Comparison")
            .layout(SlideLayout::TwoColumn)
            .title_color("1F497D")
            .add_bullet("Left Column Item 1")
            .add_bullet("Left Column Item 2")
            .add_bullet("Left Column Item 3")
            .add_bullet("Right Column Item 1")
            .add_bullet("Right Column Item 2")
            .add_bullet("Right Column Item 3")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 6: Blank Layout
    // =========================================================================
    println!("📐 Slide 6: Blank Layout");
    slides.push(
        SlideContent::new("")
            .layout(SlideLayout::Blank)
    );

    // =========================================================================
    // SLIDE 7: Table with All Cell Styling Options
    // =========================================================================
    println!("📊 Slide 7: Table with Cell Styling");
    let styled_table = TableBuilder::new(vec![1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Header 1").bold().background_color("1F497D"),
            TableCell::new("Header 2").bold().background_color("4F81BD"),
            TableCell::new("Header 3").bold().background_color("8064A2"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Bold Cell").bold(),
            TableCell::new("Normal Cell"),
            TableCell::new("Colored").background_color("9BBB59"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Red BG").background_color("C0504D"),
            TableCell::new("Green BG").background_color("9BBB59"),
            TableCell::new("Blue BG").background_color("4F81BD"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Row 3 Col 1"),
            TableCell::new("Row 3 Col 2"),
            TableCell::new("Row 3 Col 3").bold().background_color("F79646"),
        ]))
        .position(500000, 1800000)
        .build();
    
    slides.push(
        SlideContent::new("Table with Cell Styling")
            .table(styled_table)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 8: Charts (Bar, Line, Pie)
    // =========================================================================
    println!("📈 Slide 8: Chart Types");
    
    // Create chart data structures (for demonstration)
    let _bar_chart = ChartBuilder::new("Sales by Region", ChartType::Bar)
        .categories(vec!["North", "South", "East", "West"])
        .add_series(ChartSeries::new("2023", vec![100.0, 80.0, 120.0, 90.0]))
        .add_series(ChartSeries::new("2024", vec![120.0, 95.0, 140.0, 110.0]))
        .build();
    
    let _line_chart = ChartBuilder::new("Monthly Trend", ChartType::Line)
        .categories(vec!["Jan", "Feb", "Mar", "Apr", "May", "Jun"])
        .add_series(ChartSeries::new("Revenue", vec![10.0, 12.0, 15.0, 14.0, 18.0, 22.0]))
        .build();
    
    let _pie_chart = ChartBuilder::new("Market Share", ChartType::Pie)
        .categories(vec!["Product A", "Product B", "Product C", "Others"])
        .add_series(ChartSeries::new("Share", vec![40.0, 30.0, 20.0, 10.0]))
        .build();
    
    slides.push(
        SlideContent::new("Chart Types: Bar, Line, Pie")
            .with_chart()
            .title_color("1F497D")
            .add_bullet("Bar Chart: Compare categories")
            .add_bullet("Line Chart: Show trends over time")
            .add_bullet("Pie Chart: Show proportions")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 9: Shapes with Different Fills
    // =========================================================================
    println!("🔷 Slide 9: Shapes with Fills");
    
    let rect = Shape::new(ShapeType::Rectangle, 500000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("4F81BD"))
        .with_text("Rectangle");
    
    let ellipse = Shape::new(ShapeType::Ellipse, 3000000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("9BBB59"))
        .with_text("Ellipse");
    
    let rounded = Shape::new(ShapeType::RoundedRectangle, 5500000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("C0504D"))
        .with_text("Rounded");
    
    let triangle = Shape::new(ShapeType::Triangle, 1500000, 3000000, 1500000, 1200000)
        .with_fill(ShapeFill::new("8064A2"))
        .with_text("Triangle");
    
    let diamond = Shape::new(ShapeType::Diamond, 4000000, 3000000, 1500000, 1200000)
        .with_fill(ShapeFill::new("F79646"))
        .with_text("Diamond");
    
    slides.push(
        SlideContent::new("Shape Types with Color Fills")
            .add_shape(rect)
            .add_shape(ellipse)
            .add_shape(rounded)
            .add_shape(triangle)
            .add_shape(diamond)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 10: Gradient Fills (NEW)
    // =========================================================================
    println!("🌈 Slide 10: Gradient Fills");
    
    // Horizontal gradient
    let gradient_h = Shape::new(ShapeType::Rectangle, 500000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("1565C0", "42A5F5", GradientDirection::Horizontal))
        .with_text("Horizontal");
    
    // Vertical gradient
    let gradient_v = Shape::new(ShapeType::Rectangle, 3200000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("2E7D32", "81C784", GradientDirection::Vertical))
        .with_text("Vertical");
    
    // Diagonal gradient
    let gradient_d = Shape::new(ShapeType::RoundedRectangle, 5900000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("C62828", "EF9A9A", GradientDirection::DiagonalDown))
        .with_text("Diagonal");
    
    // Three-color gradient
    let gradient_3 = Shape::new(ShapeType::Ellipse, 1800000, 3200000, 2500000, 1200000)
        .with_gradient(GradientFill::three_color("FF6F00", "FFC107", "FFEB3B", GradientDirection::Horizontal))
        .with_text("3-Color");
    
    // Custom angle gradient
    let gradient_angle = Shape::new(ShapeType::RoundedRectangle, 4800000, 3200000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("7B1FA2", "E1BEE7", GradientDirection::Angle(135)))
        .with_text("135° Angle");
    
    slides.push(
        SlideContent::new("Gradient Fills - Multiple Directions")
            .add_shape(gradient_h)
            .add_shape(gradient_v)
            .add_shape(gradient_d)
            .add_shape(gradient_3)
            .add_shape(gradient_angle)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 11: Transparency (NEW)
    // =========================================================================
    println!("👻 Slide 11: Transparency Effects");
    
    // Base shape (fully opaque)
    let base = Shape::new(ShapeType::Rectangle, 1000000, 1800000, 3000000, 2000000)
        .with_fill(ShapeFill::new("1565C0"))
        .with_text("Base (100%)");
    
    // 25% transparent overlay
    let trans_25 = Shape::new(ShapeType::Rectangle, 2000000, 2200000, 2500000, 1500000)
        .with_fill(ShapeFill::new("F44336").with_transparency(25))
        .with_line(ShapeLine::new("B71C1C", 25400))
        .with_text("25% Transparent");
    
    // 50% transparent overlay
    let trans_50 = Shape::new(ShapeType::Ellipse, 4500000, 1800000, 2500000, 2000000)
        .with_fill(ShapeFill::new("4CAF50").with_transparency(50))
        .with_line(ShapeLine::new("1B5E20", 25400))
        .with_text("50% Transparent");
    
    // 75% transparent overlay
    let trans_75 = Shape::new(ShapeType::RoundedRectangle, 5500000, 2500000, 2500000, 1500000)
        .with_fill(ShapeFill::new("FF9800").with_transparency(75))
        .with_line(ShapeLine::new("E65100", 25400))
        .with_text("75% Transparent");
    
    slides.push(
        SlideContent::new("Transparency Effects - Overlapping Shapes")
            .add_shape(base)
            .add_shape(trans_25)
            .add_shape(trans_50)
            .add_shape(trans_75)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 12: Styled Connectors (NEW)
    // =========================================================================
    println!("🔗 Slide 12: Styled Connectors");
    
    // Create shapes to connect
    let box1 = Shape::new(ShapeType::RoundedRectangle, 500000, 1800000, 1800000, 800000)
        .with_id(100)
        .with_fill(ShapeFill::new("1565C0"))
        .with_text("Start");
    
    let box2 = Shape::new(ShapeType::RoundedRectangle, 3500000, 1800000, 1800000, 800000)
        .with_id(101)
        .with_fill(ShapeFill::new("2E7D32"))
        .with_text("Process");
    
    let box3 = Shape::new(ShapeType::RoundedRectangle, 6500000, 1800000, 1800000, 800000)
        .with_id(102)
        .with_fill(ShapeFill::new("C62828"))
        .with_text("End");
    
    // Straight connector with arrow
    let conn1 = Connector::straight(2300000, 2200000, 3500000, 2200000)
        .with_line(ConnectorLine::new("1565C0", 25400))
        .with_end_arrow(ArrowType::Triangle)
        .with_arrow_size(ArrowSize::Large);
    
    // Elbow connector with stealth arrow
    let conn2 = Connector::elbow(5300000, 2200000, 6500000, 2200000)
        .with_line(ConnectorLine::new("2E7D32", 38100).with_dash(LineDash::Dash))
        .with_end_arrow(ArrowType::Stealth)
        .with_arrow_size(ArrowSize::Medium);
    
    // Curved connector examples
    let box4 = Shape::new(ShapeType::Ellipse, 1000000, 3200000, 1500000, 800000)
        .with_id(103)
        .with_fill(ShapeFill::new("7B1FA2"))
        .with_text("A");
    
    let box5 = Shape::new(ShapeType::Ellipse, 4000000, 3200000, 1500000, 800000)
        .with_id(104)
        .with_fill(ShapeFill::new("00838F"))
        .with_text("B");
    
    let box6 = Shape::new(ShapeType::Ellipse, 7000000, 3200000, 1500000, 800000)
        .with_id(105)
        .with_fill(ShapeFill::new("EF6C00"))
        .with_text("C");
    
    // Curved connector with diamond arrow
    let conn3 = Connector::curved(2500000, 3600000, 4000000, 3600000)
        .with_line(ConnectorLine::new("7B1FA2", 19050).with_dash(LineDash::DashDot))
        .with_arrows(ArrowType::Oval, ArrowType::Diamond);
    
    // Dotted connector
    let conn4 = Connector::straight(5500000, 3600000, 7000000, 3600000)
        .with_line(ConnectorLine::new("00838F", 12700).with_dash(LineDash::Dot))
        .with_end_arrow(ArrowType::Open);
    
    slides.push(
        SlideContent::new("Styled Connectors - Types, Arrows, Dashes")
            .add_shape(box1)
            .add_shape(box2)
            .add_shape(box3)
            .add_shape(box4)
            .add_shape(box5)
            .add_shape(box6)
            .add_connector(conn1)
            .add_connector(conn2)
            .add_connector(conn3)
            .add_connector(conn4)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 13: Images
    // =========================================================================
    println!("🖼️  Slide 13: Image Placeholders");
    
    let img1 = Image::new("logo.png", 2500000, 1800000, "png")
        .position(500000, 1600000);
    let img2 = Image::new("photo.jpg", 2500000, 1800000, "jpg")
        .position(3500000, 1600000);
    let img3 = Image::new("diagram.png", 2000000, 1800000, "png")
        .position(6500000, 1600000);
    
    slides.push(
        SlideContent::new("Image Placeholders")
            .add_image(img1)
            .add_image(img2)
            .add_image(img3)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 11: Advanced Table with Borders & Alignment (NEW)
    // =========================================================================
    println!("📊 Slide 11: Advanced Table (borders, alignment, merged cells)");
    
    // Build advanced table using generator's TableBuilder with alignment
    let advanced_table = TableBuilder::new(vec![2000000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2024 Financial Report").bold().background_color("1F4E79").text_color("FFFFFF").align_center().font_size(14),
            TableCell::new("").background_color("1F4E79"),
            TableCell::new("").background_color("1F4E79"),
            TableCell::new("").background_color("1F4E79"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Category").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Revenue").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Expenses").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Profit").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Product Sales").text_color("000000").align_left(),
            TableCell::new("$1,250,000").text_color("2E7D32").align_right(),
            TableCell::new("$450,000").text_color("C62828").align_right(),
            TableCell::new("$800,000").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Services").text_color("000000").align_left(),
            TableCell::new("$890,000").text_color("2E7D32").align_right(),
            TableCell::new("$320,000").text_color("C62828").align_right(),
            TableCell::new("$570,000").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Total").bold().background_color("E7E6E6").text_color("000000").align_left(),
            TableCell::new("$2,140,000").bold().background_color("E7E6E6").text_color("000000").align_right(),
            TableCell::new("$770,000").bold().background_color("E7E6E6").text_color("000000").align_right(),
            TableCell::new("$1,370,000").bold().background_color("C6EFCE").text_color("006100").align_right(),
        ]))
        .position(300000, 1600000)
        .build();
    
    slides.push(
        SlideContent::new("Financial Report - Advanced Table")
            .table(advanced_table)
            .title_color("1F4E79")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 12: Comparison Matrix Table (NEW)
    // =========================================================================
    println!("📊 Slide 12: Comparison Matrix Table");
    
    let comparison_table = TableBuilder::new(vec![2000000, 1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Feature").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Basic").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Pro").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Enterprise").bold().background_color("4472C4").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Storage").text_color("000000"),
            TableCell::new("5 GB").text_color("000000"),
            TableCell::new("50 GB").text_color("000000"),
            TableCell::new("Unlimited").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Users").text_color("000000"),
            TableCell::new("1").text_color("000000"),
            TableCell::new("10").text_color("000000"),
            TableCell::new("Unlimited").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Support").text_color("000000"),
            TableCell::new("Email").text_color("000000"),
            TableCell::new("24/7 Chat").text_color("000000"),
            TableCell::new("Dedicated").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("API Access").text_color("000000"),
            TableCell::new("No").text_color("C62828"),
            TableCell::new("Yes").text_color("2E7D32"),
            TableCell::new("Yes + Priority").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Price/month").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$9").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$29").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$99").bold().background_color("F2F2F2").text_color("000000"),
        ]))
        .position(500000, 1600000)
        .build();
    
    slides.push(
        SlideContent::new("Pricing Comparison Matrix")
            .table(comparison_table)
            .title_color("4472C4")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 13: Process Flow with Shapes (NEW - SmartArt-like)
    // =========================================================================
    println!("🔷 Slide 13: Process Flow (SmartArt-style)");
    
    // Create process flow using shapes
    let step1 = Shape::new(ShapeType::RoundedRectangle, 300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("1. Research");
    let arrow1 = Shape::new(ShapeType::RightArrow, 1800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step2 = Shape::new(ShapeType::RoundedRectangle, 2300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("2. Design");
    let arrow2 = Shape::new(ShapeType::RightArrow, 3800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step3 = Shape::new(ShapeType::RoundedRectangle, 4300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("3. Develop");
    let arrow3 = Shape::new(ShapeType::RightArrow, 5800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step4 = Shape::new(ShapeType::RoundedRectangle, 6300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("5B9BD5"))
        .with_text("4. Deploy");
    
    slides.push(
        SlideContent::new("Development Process Flow")
            .add_shape(step1)
            .add_shape(arrow1)
            .add_shape(step2)
            .add_shape(arrow2)
            .add_shape(step3)
            .add_shape(arrow3)
            .add_shape(step4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 14: Organization Chart with Shapes (NEW)
    // =========================================================================
    println!("🔷 Slide 14: Organization Chart");
    
    // CEO at top
    let ceo = Shape::new(ShapeType::RoundedRectangle, 3500000, 1400000, 2000000, 600000)
        .with_fill(ShapeFill::new("1F4E79"))
        .with_text("CEO");
    
    // Vertical line from CEO
    let line1 = Shape::new(ShapeType::Rectangle, 4450000, 2000000, 100000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // Horizontal connector
    let hline = Shape::new(ShapeType::Rectangle, 1950000, 2400000, 5100000, 50000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // CTO, CFO, COO
    let cto = Shape::new(ShapeType::RoundedRectangle, 1000000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("CTO");
    let cfo = Shape::new(ShapeType::RoundedRectangle, 3600000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("CFO");
    let coo = Shape::new(ShapeType::RoundedRectangle, 6200000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("COO");
    
    // Vertical lines to departments
    let vline1 = Shape::new(ShapeType::Rectangle, 1850000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let vline2 = Shape::new(ShapeType::Rectangle, 4450000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let vline3 = Shape::new(ShapeType::Rectangle, 7050000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // Teams under CTO
    let eng = Shape::new(ShapeType::Rectangle, 500000, 3300000, 1200000, 400000)
        .with_fill(ShapeFill::new("BDD7EE"))
        .with_text("Engineering");
    let product = Shape::new(ShapeType::Rectangle, 1800000, 3300000, 1200000, 400000)
        .with_fill(ShapeFill::new("BDD7EE"))
        .with_text("Product");
    
    slides.push(
        SlideContent::new("Organization Structure")
            .add_shape(ceo)
            .add_shape(line1)
            .add_shape(hline)
            .add_shape(cto)
            .add_shape(cfo)
            .add_shape(coo)
            .add_shape(vline1)
            .add_shape(vline2)
            .add_shape(vline3)
            .add_shape(eng)
            .add_shape(product)
            .title_color("1F4E79")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 15: PDCA Cycle Diagram (NEW)
    // =========================================================================
    println!("🔷 Slide 15: PDCA Cycle Diagram");
    
    // Four quadrants for PDCA
    let plan = Shape::new(ShapeType::RoundedRectangle, 1500000, 1600000, 2500000, 1500000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("PLAN\n\nDefine goals\nand strategy");
    let do_box = Shape::new(ShapeType::RoundedRectangle, 4500000, 1600000, 2500000, 1500000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("DO\n\nImplement\nthe plan");
    let check = Shape::new(ShapeType::RoundedRectangle, 4500000, 3300000, 2500000, 1500000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("CHECK\n\nMeasure\nresults");
    let act = Shape::new(ShapeType::RoundedRectangle, 1500000, 3300000, 2500000, 1500000)
        .with_fill(ShapeFill::new("FFC000"))
        .with_text("ACT\n\nAdjust and\nimprove");
    
    // Arrows between quadrants
    let arr1 = Shape::new(ShapeType::RightArrow, 4100000, 2100000, 300000, 300000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr2 = Shape::new(ShapeType::DownArrow, 5600000, 3200000, 300000, 200000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr3 = Shape::new(ShapeType::LeftArrow, 4100000, 3800000, 300000, 300000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr4 = Shape::new(ShapeType::UpArrow, 2600000, 3200000, 300000, 200000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    slides.push(
        SlideContent::new("PDCA Continuous Improvement Cycle")
            .add_shape(plan)
            .add_shape(do_box)
            .add_shape(check)
            .add_shape(act)
            .add_shape(arr1)
            .add_shape(arr2)
            .add_shape(arr3)
            .add_shape(arr4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 16: Pyramid Diagram (Maslow's Hierarchy) (NEW)
    // =========================================================================
    println!("🔷 Slide 16: Pyramid Diagram");
    
    // Build pyramid from bottom to top
    let level5 = Shape::new(ShapeType::Trapezoid, 500000, 4000000, 8000000, 600000)
        .with_fill(ShapeFill::new("C00000"))
        .with_text("Physiological Needs - Food, Water, Shelter");
    let level4 = Shape::new(ShapeType::Trapezoid, 1000000, 3400000, 7000000, 600000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Safety Needs - Security, Stability");
    let level3 = Shape::new(ShapeType::Trapezoid, 1500000, 2800000, 6000000, 600000)
        .with_fill(ShapeFill::new("FFC000"))
        .with_text("Love & Belonging - Relationships");
    let level2 = Shape::new(ShapeType::Trapezoid, 2000000, 2200000, 5000000, 600000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Esteem - Achievement, Respect");
    let level1 = Shape::new(ShapeType::Triangle, 2500000, 1500000, 4000000, 700000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Self-Actualization");
    
    slides.push(
        SlideContent::new("Maslow's Hierarchy of Needs")
            .add_shape(level5)
            .add_shape(level4)
            .add_shape(level3)
            .add_shape(level2)
            .add_shape(level1)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 17: Venn Diagram (NEW)
    // =========================================================================
    println!("🔷 Slide 17: Venn Diagram");
    
    // Three overlapping circles
    let circle1 = Shape::new(ShapeType::Ellipse, 1500000, 1800000, 3000000, 3000000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Skills");
    let circle2 = Shape::new(ShapeType::Ellipse, 3500000, 1800000, 3000000, 3000000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Passion");
    let circle3 = Shape::new(ShapeType::Ellipse, 2500000, 3200000, 3000000, 3000000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Market Need");
    
    // Center label
    let center = Shape::new(ShapeType::Ellipse, 3200000, 2800000, 1600000, 800000)
        .with_fill(ShapeFill::new("FFFFFF"))
        .with_text("IKIGAI");
    
    slides.push(
        SlideContent::new("Finding Your Ikigai - Venn Diagram")
            .add_shape(circle1)
            .add_shape(circle2)
            .add_shape(circle3)
            .add_shape(center)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 18: Timeline/Roadmap (NEW)
    // =========================================================================
    println!("📊 Slide 18: Project Timeline");
    
    let timeline_table = TableBuilder::new(vec![1500000, 1500000, 1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q2 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q3 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q4 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q1 2025").bold().background_color("4472C4").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Research\n& Planning").background_color("BDD7EE").text_color("1F497D"),
            TableCell::new("Design\nPhase").background_color("BDD7EE").text_color("1F497D"),
            TableCell::new("Development\nSprint 1-3").background_color("C6EFCE").text_color("006100"),
            TableCell::new("Testing\n& QA").background_color("FCE4D6").text_color("C65911"),
            TableCell::new("Launch\n& Support").background_color("E2EFDA").text_color("375623"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("✓ Complete").bold().text_color("2E7D32"),
            TableCell::new("✓ Complete").bold().text_color("2E7D32"),
            TableCell::new("In Progress").text_color("ED7D31"),
            TableCell::new("Planned").text_color("7F7F7F"),
            TableCell::new("Planned").text_color("7F7F7F"),
        ]))
        .position(300000, 2000000)
        .build();
    
    slides.push(
        SlideContent::new("Project Roadmap 2024-2025")
            .table(timeline_table)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 19: Dashboard Summary (NEW)
    // =========================================================================
    println!("🔷 Slide 19: Dashboard with KPIs");
    
    // KPI boxes
    let kpi1 = Shape::new(ShapeType::RoundedRectangle, 300000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Revenue\n\n$2.14M\n+15% YoY");
    let kpi2 = Shape::new(ShapeType::RoundedRectangle, 2500000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Customers\n\n12,450\n+22% YoY");
    let kpi3 = Shape::new(ShapeType::RoundedRectangle, 4700000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("NPS Score\n\n72\n+8 pts");
    let kpi4 = Shape::new(ShapeType::RoundedRectangle, 6900000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("5B9BD5"))
        .with_text("Retention\n\n94%\n+3% YoY");
    
    // Status indicators
    let status1 = Shape::new(ShapeType::Ellipse, 1800000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    let status2 = Shape::new(ShapeType::Ellipse, 4000000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    let status3 = Shape::new(ShapeType::Ellipse, 6200000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("FFC000"));
    let status4 = Shape::new(ShapeType::Ellipse, 8400000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    
    slides.push(
        SlideContent::new("Executive Dashboard - Q1 2024")
            .add_shape(kpi1)
            .add_shape(kpi2)
            .add_shape(kpi3)
            .add_shape(kpi4)
            .add_shape(status1)
            .add_shape(status2)
            .add_shape(status3)
            .add_shape(status4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 20: Summary Slide (NEW)
    // =========================================================================
    println!("📝 Slide 20: Summary with Speaker Notes");
    
    slides.push(
        SlideContent::new("Summary & Next Steps")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Completed: Research, Design, Initial Development")
            .add_bullet("In Progress: Sprint 3 Development")
            .add_bullet("Next: QA Testing Phase (Q4 2024)")
            .add_bullet("Launch Target: Q1 2025")
            .add_bullet("Key Risks: Resource constraints, Timeline pressure")
            .content_size(24)
            .notes("Speaker Notes:\n\n1. Emphasize the progress made\n2. Highlight key achievements\n3. Address any concerns about timeline\n4. Open for Q&A")
    );

    // =========================================================================
    // SLIDE 21: Bullet Styles (NEW v0.2.1)
    // =========================================================================
    println!("🔢 Slide 21: Bullet Styles (NEW)");
    
    // Numbered list
    slides.push(
        SlideContent::new("Bullet Styles - Numbered List")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .with_bullet_style(BulletStyle::Number)
            .add_bullet("First numbered item")
            .add_bullet("Second numbered item")
            .add_bullet("Third numbered item")
            .add_bullet("Fourth numbered item")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 22: Lettered Lists (NEW v0.2.1)
    // =========================================================================
    println!("🔤 Slide 22: Lettered Lists (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Lettered Lists")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_lettered("Option A - First choice")
            .add_lettered("Option B - Second choice")
            .add_lettered("Option C - Third choice")
            .add_lettered("Option D - Fourth choice")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 23: Roman Numerals (NEW v0.2.1)
    // =========================================================================
    println!("🏛️ Slide 23: Roman Numerals (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Roman Numerals")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .with_bullet_style(BulletStyle::RomanUpper)
            .add_bullet("Chapter I - Introduction")
            .add_bullet("Chapter II - Background")
            .add_bullet("Chapter III - Methodology")
            .add_bullet("Chapter IV - Results")
            .add_bullet("Chapter V - Conclusion")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 24: Custom Bullets (NEW v0.2.1)
    // =========================================================================
    println!("⭐ Slide 24: Custom Bullets (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Custom Characters")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_styled_bullet("Star bullet point", BulletStyle::Custom('★'))
            .add_styled_bullet("Arrow bullet point", BulletStyle::Custom('→'))
            .add_styled_bullet("Check bullet point", BulletStyle::Custom('✓'))
            .add_styled_bullet("Diamond bullet point", BulletStyle::Custom('◆'))
            .add_styled_bullet("Heart bullet point", BulletStyle::Custom('♥'))
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 25: Sub-bullets / Hierarchy (NEW v0.2.1)
    // =========================================================================
    println!("📊 Slide 25: Sub-bullets Hierarchy (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Hierarchical Lists")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Main Topic 1")
            .add_sub_bullet("Supporting detail A")
            .add_sub_bullet("Supporting detail B")
            .add_bullet("Main Topic 2")
            .add_sub_bullet("Supporting detail C")
            .add_sub_bullet("Supporting detail D")
            .add_bullet("Main Topic 3")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 26: Text Enhancements (NEW v0.2.1)
    // =========================================================================
    println!("✏️ Slide 26: Text Enhancements (NEW)");
    
    // Use BulletPoint with formatting
    let strikethrough_bullet = BulletPoint::new("Strikethrough: This text is crossed out").strikethrough();
    let highlight_bullet = BulletPoint::new("Highlight: Yellow background for emphasis").highlight("FFFF00");
    let subscript_bullet = BulletPoint::new("Subscript: H₂O - for chemical formulas").subscript();
    let superscript_bullet = BulletPoint::new("Superscript: x² - for math expressions").superscript();
    let bold_colored = BulletPoint::new("Combined: Bold + Red color").bold().color("FF0000");
    
    let mut text_enhancements_slide = SlideContent::new("Text Enhancements - New Formatting")
        .layout(SlideLayout::TitleAndContent)
        .title_color("1F497D")
        .title_bold(true)
        .content_size(24);
    text_enhancements_slide.bullets.push(strikethrough_bullet);
    text_enhancements_slide.bullets.push(highlight_bullet);
    text_enhancements_slide.bullets.push(subscript_bullet);
    text_enhancements_slide.bullets.push(superscript_bullet);
    text_enhancements_slide.bullets.push(bold_colored);
    
    slides.push(text_enhancements_slide);

    // =========================================================================
    // SLIDE 27: Font Size Presets (NEW v0.2.1)
    // =========================================================================
    println!("🔤 Slide 27: Font Size Presets (NEW)");
    
    // Demonstrate different font sizes per bullet
    let large_bullet = BulletPoint::new(&format!("LARGE: {}pt - Extra large text", font_sizes::LARGE)).font_size(font_sizes::LARGE);
    let heading_bullet = BulletPoint::new(&format!("HEADING: {}pt - Section headers", font_sizes::HEADING)).font_size(font_sizes::HEADING);
    let body_bullet = BulletPoint::new(&format!("BODY: {}pt - Regular content", font_sizes::BODY)).font_size(font_sizes::BODY);
    let small_bullet = BulletPoint::new(&format!("SMALL: {}pt - Smaller text", font_sizes::SMALL)).font_size(font_sizes::SMALL);
    let caption_bullet = BulletPoint::new(&format!("CAPTION: {}pt - Captions and notes", font_sizes::CAPTION)).font_size(font_sizes::CAPTION);
    
    let mut font_size_slide = SlideContent::new("Font Size Presets - Each line different size")
        .layout(SlideLayout::TitleAndContent)
        .title_color("1F497D")
        .title_bold(true)
        .title_size(font_sizes::TITLE);
    font_size_slide.bullets.push(large_bullet);
    font_size_slide.bullets.push(heading_bullet);
    font_size_slide.bullets.push(body_bullet);
    font_size_slide.bullets.push(small_bullet);
    font_size_slide.bullets.push(caption_bullet);
    
    slides.push(font_size_slide);

    // =========================================================================
    // SLIDE 28: Theme Colors (NEW v0.2.1)
    // =========================================================================
    println!("🎨 Slide 28: Theme Colors (NEW)");
    
    // Create shapes with theme colors
    let corporate_shape = Shape::new(ShapeType::Rectangle, 500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::CORPORATE.primary))
        .with_text("Corporate");
    
    let modern_shape = Shape::new(ShapeType::Rectangle, 2500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::MODERN.primary))
        .with_text("Modern");
    
    let vibrant_shape = Shape::new(ShapeType::Rectangle, 4500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::VIBRANT.primary))
        .with_text("Vibrant");
    
    let dark_shape = Shape::new(ShapeType::Rectangle, 6500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::DARK.primary))
        .with_text("Dark");
    
    let nature_shape = Shape::new(ShapeType::Rectangle, 500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::NATURE.primary))
        .with_text("Nature");
    
    let tech_shape = Shape::new(ShapeType::Rectangle, 2500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::TECH.primary))
        .with_text("Tech");
    
    let carbon_shape = Shape::new(ShapeType::Rectangle, 4500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::CARBON.primary))
        .with_text("Carbon");
    
    slides.push(
        SlideContent::new("Theme Color Palettes")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_shape(corporate_shape)
            .add_shape(modern_shape)
            .add_shape(vibrant_shape)
            .add_shape(dark_shape)
            .add_shape(nature_shape)
            .add_shape(tech_shape)
            .add_shape(carbon_shape)
    );

    // =========================================================================
    // SLIDE 29: Material & Carbon Design Colors (NEW v0.2.1)
    // =========================================================================
    println!("🌈 Slide 29: Material & Carbon Colors (NEW)");
    
    // Material Design colors
    let material_red = Shape::new(ShapeType::Rectangle, 500000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_RED))
        .with_text("M-Red");
    
    let material_blue = Shape::new(ShapeType::Rectangle, 1900000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_BLUE))
        .with_text("M-Blue");
    
    let material_green = Shape::new(ShapeType::Rectangle, 3300000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_GREEN))
        .with_text("M-Green");
    
    let material_orange = Shape::new(ShapeType::Rectangle, 4700000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_ORANGE))
        .with_text("M-Orange");
    
    let material_purple = Shape::new(ShapeType::Rectangle, 6100000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_PURPLE))
        .with_text("M-Purple");
    
    // Carbon Design colors
    let carbon_blue = Shape::new(ShapeType::Rectangle, 500000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_BLUE_60))
        .with_text("C-Blue");
    
    let carbon_green = Shape::new(ShapeType::Rectangle, 1900000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_GREEN_50))
        .with_text("C-Green");
    
    let carbon_red = Shape::new(ShapeType::Rectangle, 3300000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_RED_60))
        .with_text("C-Red");
    
    let carbon_purple = Shape::new(ShapeType::Rectangle, 4700000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_PURPLE_60))
        .with_text("C-Purple");
    
    let carbon_gray = Shape::new(ShapeType::Rectangle, 6100000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_GRAY_100))
        .with_text("C-Gray");
    
    slides.push(
        SlideContent::new("Material & Carbon Design Colors")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_shape(material_red)
            .add_shape(material_blue)
            .add_shape(material_green)
            .add_shape(material_orange)
            .add_shape(material_purple)
            .add_shape(carbon_blue)
            .add_shape(carbon_green)
            .add_shape(carbon_red)
            .add_shape(carbon_purple)
            .add_shape(carbon_gray)
    );

    // =========================================================================
    // SLIDE 30: Image from Base64 (NEW v0.2.1)
    // =========================================================================
    println!("🖼️ Slide 30: Image from Base64 (NEW)");
    
    // 1x1 red PNG pixel in base64
    let _red_pixel_base64 = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8DwHwAFBQIAX8jx0gAAAABJRU5ErkJggg==";
    
    // Create image from base64 (demonstrating the API)
    let _base64_image = ImageBuilder::from_base64(_red_pixel_base64, 914400, 914400, "PNG")
        .position(4000000, 2500000)
        .build();
    
    slides.push(
        SlideContent::new("Image Loading - New Methods")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Image::new(path) - Load from file path")
            .add_bullet("Image::from_base64(data) - Load from base64 string")
            .add_bullet("Image::from_bytes(data) - Load from raw bytes")
            .add_bullet("ImageBuilder for fluent API configuration")
            .add_bullet("Built-in base64 decoder (no external deps)")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 31: Feature Summary (NEW v0.2.1)
    // =========================================================================
    println!("📋 Slide 31: v0.2.1 Feature Summary (NEW)");
    
    slides.push(
        SlideContent::new("New Features in v0.2.1")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_numbered("BulletStyle: Number, Letter, Roman, Custom")
            .add_numbered("TextFormat: Strikethrough, Highlight")
            .add_numbered("TextFormat: Subscript, Superscript")
            .add_numbered("Font size presets in prelude")
            .add_numbered("Image::from_base64 and from_bytes")
            .add_numbered("Theme color palettes (7 themes)")
            .add_numbered("Material & Carbon Design colors")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 32: Slide Show Settings - Comparison Table (REAL: embedded in presProps.xml)
    // =========================================================================
    println!("🎬 Slide 34: Slide Show Settings (Visual)");

    let show_speaker = SlideShowSettings::new().pen_color(PenColor::red());
    let show_kiosk = SlideShowSettings::kiosk();
    let _show_range = SlideShowSettings::new()
        .show_type(ShowType::Browsed)
        .slide_range(SlideRange::Range { start: 1, end: 10 })
        .without_animation(true);
    let _speaker_xml = show_speaker.to_xml();
    let _kiosk_xml = show_kiosk.to_xml();

    let show_table = TableBuilder::new(vec![2000000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Setting").bold().background_color("1F4E79").text_color("FFFFFF"),
            TableCell::new("Speaker").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Kiosk").bold().background_color("ED7D31").text_color("FFFFFF"),
            TableCell::new("Browsed").bold().background_color("70AD47").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Loop").bold().background_color("D6E4F0"),
            TableCell::new("No"), TableCell::new("Yes").bold().text_color("2E7D32"),
            TableCell::new("No"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Narration").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("No").text_color("C62828"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Animation").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("Yes"),
            TableCell::new("No").text_color("C62828"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Timings").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("Auto"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Slide Range").bold().background_color("D6E4F0"),
            TableCell::new("All"), TableCell::new("All"),
            TableCell::new("1-10"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Pen Color").bold().background_color("D6E4F0"),
            TableCell::new("Red").text_color("FF0000"),
            TableCell::new("Red").text_color("FF0000"),
            TableCell::new("Red").text_color("FF0000"),
        ]))
        .position(300000, 1600000)
        .build();

    // Mode icons
    let icon_speaker = Shape::new(ShapeType::RoundedRectangle, 300000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Speaker: Full control");
    let icon_kiosk = Shape::new(ShapeType::RoundedRectangle, 3100000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Kiosk: Auto-loop");
    let icon_browsed = Shape::new(ShapeType::RoundedRectangle, 5900000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Browsed: Scrollbar");

    slides.push(
        SlideContent::new("Slide Show Settings - Mode Comparison")
            .table(show_table)
            .add_shape(icon_speaker)
            .add_shape(icon_kiosk)
            .add_shape(icon_browsed)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 35: Print Settings - Visual Handout Grid
    // =========================================================================
    println!("🖨️  Slide 35: Print Settings & Handouts (Visual)");

    let print = PrintSettings::new()
        .print_what(PrintWhat::Handouts)
        .color_mode(PrintColorMode::Grayscale)
        .handout_layout(GenHandoutLayout::SlidesPerPage6)
        .frame_slides(true)
        .header("Q1 2025 Strategy Review")
        .footer("Confidential - Internal Use Only")
        .print_date(true)
        .print_page_numbers(true);
    let _prnpr_xml = print.to_prnpr_xml();
    let _handout_xml = print.to_handout_master_xml();

    // Visual: 6-slide handout grid (2 cols x 3 rows)
    let hdr = Shape::new(ShapeType::Rectangle, 300000, 1500000, 4200000, 300000)
        .with_fill(ShapeFill::new("E7E6E6"))
        .with_text("Q1 2025 Strategy Review");
    // Row 1
    let s1 = Shape::new(ShapeType::Rectangle, 400000, 2000000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 1");
    let s2 = Shape::new(ShapeType::Rectangle, 2500000, 2000000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 2");
    // Row 2
    let s3 = Shape::new(ShapeType::Rectangle, 400000, 3200000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 3");
    let s4 = Shape::new(ShapeType::Rectangle, 2500000, 3200000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 4");
    // Row 3
    let s5 = Shape::new(ShapeType::Rectangle, 400000, 4400000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 5");
    let s6 = Shape::new(ShapeType::Rectangle, 2500000, 4400000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 6");
    let ftr = Shape::new(ShapeType::Rectangle, 300000, 5600000, 4200000, 300000)
        .with_fill(ShapeFill::new("E7E6E6"))
        .with_text("Confidential - Internal Use Only");

    // Settings summary table on the right
    let print_table = TableBuilder::new(vec![1800000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Print Settings").bold().background_color("1F4E79").text_color("FFFFFF"),
            TableCell::new("").background_color("1F4E79"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Print What").bold().background_color("D6E4F0"),
            TableCell::new("Handouts"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Color Mode").bold().background_color("D6E4F0"),
            TableCell::new("Grayscale"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Layout").bold().background_color("D6E4F0"),
            TableCell::new("6 slides/page"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Frame Slides").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Date").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Page Numbers").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .position(5000000, 1800000)
        .build();

    slides.push(
        SlideContent::new("Print Handout - 6 Slides Per Page")
            .table(print_table)
            .add_shape(hdr)
            .add_shape(s1).add_shape(s2)
            .add_shape(s3).add_shape(s4)
            .add_shape(s5).add_shape(s6)
            .add_shape(ftr)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 36: Advanced Table Merging - Actual Merged Table
    // =========================================================================
    println!("📊 Slide 36: Advanced Table Merging (Visual)");

    // Use TableMergeMap to compute states, then build a visual table
    let mut merge_map = TableMergeMap::new(5, 4);
    merge_map.merge_cells(0, 0, 1, 4).unwrap(); // Title row spans all 4 cols
    merge_map.merge_cells(1, 0, 2, 1).unwrap(); // "Products" spans 2 rows
    merge_map.merge_cells(3, 0, 2, 1).unwrap(); // "Services" spans 2 rows

    // Show merge state labels
    let state_00 = merge_map.cell_state(0, 0); // Anchor gridSpan=4
    let state_01 = merge_map.cell_state(0, 1); // HMerge
    let state_10 = merge_map.cell_state(1, 0); // Anchor rowSpan=2
    let state_20 = merge_map.cell_state(2, 0); // VMerge
    println!("   ├── (0,0): {}", state_00.to_xml_attrs().trim());
    println!("   ├── (0,1): {}", state_01.to_xml_attrs().trim());
    println!("   ├── (1,0): {}", state_10.to_xml_attrs().trim());
    println!("   └── (2,0): {}", state_20.to_xml_attrs().trim());

    // Build the table with REAL merge attributes (gridSpan, rowSpan, hMerge, vMerge)
    let merge_table = TableBuilder::new(vec![1500000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2025 Revenue Report").bold().background_color("1F4E79").text_color("FFFFFF").grid_span(4),
            TableCell::new("").background_color("1F4E79").h_merge(),
            TableCell::new("").background_color("1F4E79").h_merge(),
            TableCell::new("").background_color("1F4E79").h_merge(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Products").bold().background_color("BDD7EE").text_color("1F497D").row_span(2),
            TableCell::new("Hardware").background_color("E2EFDA"),
            TableCell::new("$450,000").text_color("2E7D32").align_right(),
            TableCell::new("+12%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("").background_color("BDD7EE").v_merge(),
            TableCell::new("Software").background_color("E2EFDA"),
            TableCell::new("$680,000").text_color("2E7D32").align_right(),
            TableCell::new("+25%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Services").bold().background_color("FCE4D6").text_color("C65911").row_span(2),
            TableCell::new("Consulting").background_color("FFF2CC"),
            TableCell::new("$320,000").text_color("2E7D32").align_right(),
            TableCell::new("+8%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("").background_color("FCE4D6").v_merge(),
            TableCell::new("Support").background_color("FFF2CC"),
            TableCell::new("$190,000").text_color("2E7D32").align_right(),
            TableCell::new("+5%").bold().text_color("2E7D32").align_right(),
        ]))
        .position(300000, 1600000)
        .build();

    // Legend shapes
    let legend_anchor = Shape::new(ShapeType::RoundedRectangle, 300000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Anchor (gridSpan/rowSpan)");
    let legend_hmerge = Shape::new(ShapeType::RoundedRectangle, 2500000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("hMerge (col covered)");
    let legend_vmerge = Shape::new(ShapeType::RoundedRectangle, 4700000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("vMerge (row covered)");
    let legend_normal = Shape::new(ShapeType::RoundedRectangle, 6900000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"))
        .with_text("Normal (no merge)");

    slides.push(
        SlideContent::new("Advanced Table Merging - Merged Cells")
            .table(merge_table)
            .add_shape(legend_anchor)
            .add_shape(legend_hmerge)
            .add_shape(legend_vmerge)
            .add_shape(legend_normal)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // Build PresentationSettings with all advanced features
    // =========================================================================
    println!("\n⚙️  Building Presentation Settings...");

    // Slide show settings (embedded in presProps.xml as <p:showPr>)
    let show_settings = SlideShowSettings::new()
        .show_type(ShowType::Speaker)
        .pen_color(PenColor::red())
        .use_timings(true);
    println!("   ├── Slide Show: Speaker mode, red pen, timings enabled");
    println!("   │   └── XML: {} bytes", show_settings.to_xml().len());

    // Print settings (embedded in presProps.xml as <p:prnPr>)
    let print_settings = PrintSettings::new()
        .print_what(PrintWhat::Handouts)
        .color_mode(PrintColorMode::Grayscale)
        .handout_layout(GenHandoutLayout::SlidesPerPage6)
        .frame_slides(true)
        .header("Q1 2025 Strategy Review")
        .footer("Confidential - Internal Use Only")
        .print_date(true)
        .print_page_numbers(true);
    println!("   └── Print: Handouts, 6/page, grayscale, framed");
    println!("       └── XML: {} bytes", print_settings.to_prnpr_xml().len());

    let pres_settings = PresentationSettings::new()
        .slide_show(show_settings)
        .print(print_settings);
    println!("   All settings configured → presProps.xml");

    // =========================================================================
    // Generate PPTX with real integrated features
    // =========================================================================
    println!("\n📦 Generating PPTX with integrated features...");
    let pptx_data = create_pptx_with_settings(
        "PPTX-RS Element Showcase",
        slides.clone(),
        Some(pres_settings),
    )?;
    fs::write("comprehensive_demo.pptx", &pptx_data)?;
    println!("   ✓ Created comprehensive_demo.pptx ({} slides, {} bytes)", 
             slides.len(), pptx_data.len());

    // =========================================================================
    // Package Analysis - Demonstrate Reading
    // =========================================================================
    println!("\n📖 Package Analysis (Read Capability):");
    
    let package = Package::open("comprehensive_demo.pptx")?;
    let paths = package.part_paths();
    
    let slide_count = paths.iter()
        .filter(|p| p.starts_with("ppt/slides/slide") && p.ends_with(".xml"))
        .count();
    
    println!("   ├── Total parts: {}", package.part_count());
    println!("   ├── Slides: {}", slide_count);
    println!("   └── Package opened and analyzed successfully");

    // =========================================================================
    // NEW: Parts API Demonstration
    // =========================================================================
    println!("\n🧩 Parts API Demonstration:");
    
    // SlideLayoutPart - 11 layout types
    println!("   ┌── SlideLayoutPart (11 layout types):");
    let layouts = [
        LayoutType::Title,
        LayoutType::TitleAndContent,
        LayoutType::SectionHeader,
        LayoutType::TwoContent,
        LayoutType::Comparison,
        LayoutType::TitleOnly,
        LayoutType::Blank,
        LayoutType::ContentWithCaption,
        LayoutType::PictureWithCaption,
        LayoutType::TitleAndVerticalText,
        LayoutType::VerticalTitleAndText,
    ];
    for (i, layout_type) in layouts.iter().enumerate() {
        let layout = SlideLayoutPart::new(i + 1, *layout_type);
        if i < 3 {
            println!("   │   ├── {}: {} ({})", i + 1, layout_type.name(), layout.path());
        }
    }
    println!("   │   └── ... and {} more layout types", layouts.len() - 3);
    
    // SlideMasterPart
    println!("   ├── SlideMasterPart:");
    let mut master = SlideMasterPart::new(1);
    master.set_name("Custom Master");
    master.add_layout_rel_id("rId2");
    master.add_layout_rel_id("rId3");
    println!("   │   ├── Name: {}", master.name());
    println!("   │   ├── Path: {}", master.path());
    println!("   │   └── Layouts: {} linked", master.layout_rel_ids().len());
    
    // ThemePart - Colors and Fonts
    println!("   ├── ThemePart (colors & fonts):");
    let mut theme = ThemePart::new(1);
    theme.set_name("Corporate Theme");
    theme.set_major_font("Arial");
    theme.set_minor_font("Calibri");
    theme.set_color("accent1", "FF5733");
    theme.set_color("accent2", "33FF57");
    let theme_xml = theme.to_xml()?;
    println!("   │   ├── Name: {}", theme.name());
    println!("   │   ├── Major Font: Arial");
    println!("   │   ├── Minor Font: Calibri");
    println!("   │   └── XML size: {} bytes", theme_xml.len());
    
    // NotesSlidePart - Speaker notes
    println!("   ├── NotesSlidePart (speaker notes):");
    let notes = NotesSlidePart::with_text(1, "Remember to:\n- Introduce yourself\n- Explain the agenda\n- Ask for questions");
    let notes_xml = notes.to_xml()?;
    println!("   │   ├── Path: {}", notes.path());
    println!("   │   ├── Text: \"{}...\"", &notes.notes_text()[..20.min(notes.notes_text().len())]);
    println!("   │   └── XML size: {} bytes", notes_xml.len());
    
    // AppPropertiesPart - Application metadata
    println!("   ├── AppPropertiesPart (metadata):");
    let mut app_props = AppPropertiesPart::new();
    app_props.set_company("Acme Corporation");
    app_props.set_slides(slides.len() as u32);
    let app_xml = app_props.to_xml()?;
    println!("   │   ├── Company: Acme Corporation");
    println!("   │   ├── Slides: {}", slides.len());
    println!("   │   └── XML size: {} bytes", app_xml.len());
    
    // MediaPart - Video/Audio formats
    println!("   ├── MediaPart (10 media formats):");
    println!("   │   ├── Video: mp4, webm, avi, wmv, mov");
    println!("   │   ├── Audio: mp3, wav, wma, m4a, ogg");
    let sample_media = MediaPart::new(1, MediaFormat::Mp4, vec![0; 100]);
    println!("   │   └── Sample: {} ({})", sample_media.path(), sample_media.format().mime_type());
    
    // TablePart - Table with formatting
    println!("   ├── TablePart (cell formatting):");
    let table_part = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Header 1").bold().background("4472C4"),
            TableCellPart::new("Header 2").bold().background("4472C4"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Data 1").color("333333"),
            TableCellPart::new("Data 2").italic(),
        ]))
        .position(EMU_PER_INCH, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 6, EMU_PER_INCH * 2);
    let table_xml = table_part.to_slide_xml(10);
    println!("   │   ├── Rows: {}", table_part.rows.len());
    println!("   │   ├── Features: bold, italic, colors, backgrounds");
    println!("   │   └── XML size: {} bytes", table_xml.len());
    
    // ContentTypesPart
    println!("   └── ContentTypesPart:");
    let mut content_types = ContentTypesPart::new();
    content_types.add_presentation();
    content_types.add_slide(1);
    content_types.add_slide_layout(1);
    content_types.add_slide_master(1);
    content_types.add_theme(1);
    content_types.add_core_properties();
    content_types.add_app_properties();
    let ct_xml = content_types.to_xml()?;
    println!("       ├── Path: {}", content_types.path());
    println!("       └── XML size: {} bytes", ct_xml.len());

    // =========================================================================
    // NEW: Elements API Demonstration
    // =========================================================================
    println!("\n🎨 Elements API Demonstration:");
    
    // Color types
    println!("   ┌── Color Types:");
    let rgb = RgbColor::new(255, 87, 51);
    let rgb_hex = RgbColor::from_hex("#4472C4").unwrap();
    let scheme = SchemeColor::Accent1;
    let color = Color::rgb(100, 149, 237);
    println!("   │   ├── RgbColor::new(255, 87, 51) → {}", rgb.to_hex());
    println!("   │   ├── RgbColor::from_hex(\"#4472C4\") → {}", rgb_hex.to_hex());
    println!("   │   ├── SchemeColor::Accent1 → {}", scheme.as_str());
    println!("   │   └── Color::rgb(100, 149, 237) → XML: {}", color.to_xml().chars().take(30).collect::<String>());
    
    // Position and Size
    println!("   ├── Position & Size (EMU units):");
    let pos = Position::from_inches(1.0, 2.0);
    let size = Size::from_inches(4.0, 3.0);
    println!("   │   ├── Position::from_inches(1.0, 2.0) → x={}, y={}", pos.x, pos.y);
    println!("   │   ├── Size::from_inches(4.0, 3.0) → w={}, h={}", size.width, size.height);
    println!("   │   └── EMU_PER_INCH = {}", EMU_PER_INCH);
    
    // Transform
    println!("   └── Transform (position + size + rotation):");
    let transform = Transform::from_inches(1.0, 1.5, 3.0, 2.0).with_rotation(45.0);
    let transform_xml = transform.to_xml();
    println!("       ├── Transform::from_inches(1.0, 1.5, 3.0, 2.0)");
    println!("       ├── .with_rotation(45.0)");
    println!("       └── XML: {}...", &transform_xml[..50.min(transform_xml.len())]);

    // =========================================================================
    // NEW: Advanced Features Demonstration
    // =========================================================================
    println!("\n🚀 Advanced Features Demonstration:");

    // -------------------------------------------------------------------------
    // Complex Table Examples
    // -------------------------------------------------------------------------
    println!("   ┌── Complex Table Examples:");
    
    // Example 1: Financial Report Table
    println!("   │   ┌── Financial Report Table (5x4 with formatting):");
    let financial_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Q1 2024 Financial Summary")
                .col_span(4)
                .bold()
                .center()
                .background("1F4E79")
                .color("FFFFFF")
                .font_size(14)
                .font("Arial Black"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Category").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Revenue").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Expenses").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Profit").bold().center().background("2E75B6").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Product Sales").align(HorizontalAlign::Left),
            TableCellPart::new("$1,250,000").align(HorizontalAlign::Right).color("2E7D32"),
            TableCellPart::new("$450,000").align(HorizontalAlign::Right).color("C62828"),
            TableCellPart::new("$800,000").align(HorizontalAlign::Right).bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Services").align(HorizontalAlign::Left),
            TableCellPart::new("$890,000").align(HorizontalAlign::Right).color("2E7D32"),
            TableCellPart::new("$320,000").align(HorizontalAlign::Right).color("C62828"),
            TableCellPart::new("$570,000").align(HorizontalAlign::Right).bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Total").bold().background("E7E6E6"),
            TableCellPart::new("$2,140,000").bold().align(HorizontalAlign::Right).background("E7E6E6"),
            TableCellPart::new("$770,000").bold().align(HorizontalAlign::Right).background("E7E6E6"),
            TableCellPart::new("$1,370,000").bold().align(HorizontalAlign::Right).background("C6EFCE").color("006100"),
        ]))
        .position(EMU_PER_INCH / 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 8, EMU_PER_INCH * 3);
    let fin_xml = financial_table.to_slide_xml(100);
    println!("   │   │   ├── Merged header spanning 4 columns");
    println!("   │   │   ├── Color-coded values (green=positive, red=negative)");
    println!("   │   │   ├── Custom fonts and sizes");
    println!("   │   │   └── XML: {} bytes", fin_xml.len());

    // Example 2: Comparison Matrix
    println!("   │   ├── Comparison Matrix (features vs products):");
    let matrix_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Feature").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Basic").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Pro").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Enterprise").bold().center().background("4472C4").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Storage").align(HorizontalAlign::Left),
            TableCellPart::new("5 GB").center(),
            TableCellPart::new("50 GB").center(),
            TableCellPart::new("Unlimited").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Users").align(HorizontalAlign::Left),
            TableCellPart::new("1").center(),
            TableCellPart::new("10").center(),
            TableCellPart::new("Unlimited").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Support").align(HorizontalAlign::Left),
            TableCellPart::new("Email").center(),
            TableCellPart::new("24/7 Chat").center(),
            TableCellPart::new("Dedicated").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Price/mo").bold().background("F2F2F2"),
            TableCellPart::new("$9").center().bold().background("F2F2F2"),
            TableCellPart::new("$29").center().bold().background("F2F2F2"),
            TableCellPart::new("$99").center().bold().background("F2F2F2"),
        ]));
    println!("   │   │   └── 5x4 matrix with alternating styles");

    // Example 3: Schedule/Timeline Table
    println!("   │   └── Schedule Table (with row spans):");
    let schedule_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Time").bold().center().background("70AD47").color("FFFFFF"),
            TableCellPart::new("Monday").bold().center().background("70AD47").color("FFFFFF"),
            TableCellPart::new("Tuesday").bold().center().background("70AD47").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("9:00 AM").center().background("E2EFDA"),
            TableCellPart::new("Team Standup").center().row_span(2).valign(VerticalAlign::Middle).background("BDD7EE"),
            TableCellPart::new("Code Review").center(),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("10:00 AM").center().background("E2EFDA"),
            TableCellPart::merged(),
            TableCellPart::new("Sprint Planning").center().background("FCE4D6"),
        ]));
    println!("   │       └── Row spans for multi-hour events");

    // -------------------------------------------------------------------------
    // Complex Animation Sequences
    // -------------------------------------------------------------------------
    println!("   ├── Complex Animation Sequences:");
    
    // Sequence 1: Title entrance with staggered content
    println!("   │   ┌── Staggered Entrance Sequence:");
    let title_anim = Animation::new(2, AnimationEffect::Fade)
        .trigger(AnimationTrigger::OnClick)
        .duration(500);
    let content1 = Animation::new(3, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(200);
    let content2 = Animation::new(4, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(100);
    let content3 = Animation::new(5, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(100);
    let staggered = SlideAnimations::new()
        .add(title_anim)
        .add(content1)
        .add(content2)
        .add(content3)
        .transition(SlideTransition::new(TransitionEffect::Push).direction(AnimationDirection::Left).duration(750));
    let staggered_xml = staggered.to_timing_xml()?;
    println!("   │   │   ├── Title: Fade on click");
    println!("   │   │   ├── Content 1-3: FlyIn with 100ms stagger");
    println!("   │   │   ├── Transition: Push from left (750ms)");
    println!("   │   │   └── XML: {} bytes", staggered_xml.len());

    // Sequence 2: Emphasis and exit
    println!("   │   ├── Emphasis + Exit Sequence:");
    let emphasis = Animation::new(6, AnimationEffect::Pulse)
        .trigger(AnimationTrigger::OnClick)
        .duration(1000)
        .repeat(3);
    let exit = Animation::new(6, AnimationEffect::FadeOut)
        .trigger(AnimationTrigger::AfterPrevious)
        .duration(500);
    let emphasis_seq = SlideAnimations::new()
        .add(emphasis)
        .add(exit);
    println!("   │   │   ├── Pulse 3x on click, then fade out");
    println!("   │   │   └── Same shape, sequential effects");

    // Sequence 3: Motion path
    println!("   │   └── Motion Path Animation:");
    let motion = Animation::new(7, AnimationEffect::Lines)
        .trigger(AnimationTrigger::OnClick)
        .duration(2000);
    println!("   │       └── Custom path: Lines, Arcs, Turns, Loops");

    // -------------------------------------------------------------------------
    // SmartArt Combinations
    // -------------------------------------------------------------------------
    println!("   ├── SmartArt Layout Examples:");
    
    // Process flow
    println!("   │   ┌── Process Flow (5 steps):");
    let process = SmartArtPart::new(1, SmartArtLayout::BasicProcess)
        .add_items(vec!["Research", "Design", "Develop", "Test", "Deploy"])
        .position(EMU_PER_INCH / 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 8, EMU_PER_INCH * 2);
    println!("   │   │   └── {} nodes in horizontal flow", process.nodes().len());

    // Organization chart
    println!("   │   ├── Organization Chart:");
    let org = SmartArtPart::new(2, SmartArtLayout::OrgChart)
        .add_items(vec!["CEO", "CTO", "CFO", "VP Engineering", "VP Sales"]);
    println!("   │   │   └── Hierarchical structure with {} positions", org.nodes().len());

    // Cycle diagram
    println!("   │   ├── Cycle Diagram:");
    let cycle = SmartArtPart::new(3, SmartArtLayout::BasicCycle)
        .add_items(vec!["Plan", "Do", "Check", "Act"]);
    println!("   │   │   └── PDCA cycle with {} phases", cycle.nodes().len());

    // Venn diagram
    println!("   │   ├── Venn Diagram:");
    let venn = SmartArtPart::new(4, SmartArtLayout::BasicVenn)
        .add_items(vec!["Skills", "Passion", "Market Need"]);
    println!("   │   │   └── 3-circle Venn for Ikigai concept");

    // Pyramid
    println!("   │   └── Pyramid:");
    let pyramid = SmartArtPart::new(5, SmartArtLayout::BasicPyramid)
        .add_items(vec!["Self-Actualization", "Esteem", "Love/Belonging", "Safety", "Physiological"]);
    println!("   │       └── Maslow's hierarchy with {} levels", pyramid.nodes().len());

    // -------------------------------------------------------------------------
    // 3D Model Configurations
    // -------------------------------------------------------------------------
    println!("   ├── 3D Model Configurations:");
    
    // Product showcase
    println!("   │   ┌── Product Showcase:");
    let product_3d = Model3DPart::new(1, Model3DFormat::Glb, vec![0; 100])
        .camera(CameraPreset::IsometricTopUp)
        .rotation(0.0, 45.0, 0.0)
        .zoom(1.2)
        .position(EMU_PER_INCH * 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 4, EMU_PER_INCH * 4);
    println!("   │   │   ├── Camera: Isometric top-up view");
    println!("   │   │   ├── Rotation: 45° Y-axis for best angle");
    println!("   │   │   └── Zoom: 1.2x for detail");

    // Architectural model
    println!("   │   ├── Architectural Model:");
    let arch_3d = Model3DPart::new(2, Model3DFormat::Gltf, vec![0; 100])
        .camera(CameraPreset::Front)
        .rotation(15.0, -30.0, 0.0)
        .ambient_light("FFFFCC");
    println!("   │   │   ├── Camera: Front view with tilt");
    println!("   │   │   └── Ambient: Warm lighting (FFFFCC)");

    // Technical diagram
    println!("   │   └── Technical Diagram:");
    let tech_3d = Model3DPart::new(3, Model3DFormat::Obj, vec![0; 100])
        .camera(CameraPreset::IsometricOffAxis1Top)
        .rotation(0.0, 0.0, 0.0);
    println!("   │       └── Camera: Off-axis isometric for exploded view");

    // -------------------------------------------------------------------------
    // Theme + Master + Layout Combination
    // -------------------------------------------------------------------------
    println!("   ├── Theme + Master + Layout Integration:");
    
    // Corporate theme
    let mut corp_theme = ThemePart::new(1);
    corp_theme.set_name("Corporate Blue");
    corp_theme.set_major_font("Segoe UI");
    corp_theme.set_minor_font("Segoe UI Light");
    corp_theme.set_color("dk1", "000000");
    corp_theme.set_color("lt1", "FFFFFF");
    corp_theme.set_color("dk2", "1F497D");
    corp_theme.set_color("lt2", "EEECE1");
    corp_theme.set_color("accent1", "4472C4");
    corp_theme.set_color("accent2", "ED7D31");
    corp_theme.set_color("accent3", "A5A5A5");
    corp_theme.set_color("accent4", "FFC000");
    corp_theme.set_color("accent5", "5B9BD5");
    corp_theme.set_color("accent6", "70AD47");
    let theme_xml = corp_theme.to_xml()?;
    println!("   │   ├── Theme: Corporate Blue");
    println!("   │   │   ├── Fonts: Segoe UI / Segoe UI Light");
    println!("   │   │   ├── 12 color slots defined");
    println!("   │   │   └── XML: {} bytes", theme_xml.len());

    // Master with multiple layouts
    let mut corp_master = SlideMasterPart::new(1);
    corp_master.set_name("Corporate Master");
    corp_master.add_layout_rel_id("rId2"); // Title
    corp_master.add_layout_rel_id("rId3"); // Title + Content
    corp_master.add_layout_rel_id("rId4"); // Section Header
    corp_master.add_layout_rel_id("rId5"); // Two Content
    corp_master.add_layout_rel_id("rId6"); // Comparison
    corp_master.add_layout_rel_id("rId7"); // Title Only
    corp_master.add_layout_rel_id("rId8"); // Blank
    println!("   │   └── Master: {} with {} layouts linked", corp_master.name(), corp_master.layout_rel_ids().len());

    // -------------------------------------------------------------------------
    // VBA + Custom XML Integration
    // -------------------------------------------------------------------------
    println!("   ├── VBA + Custom XML Integration:");
    
    // VBA with multiple modules
    let vba_project = VbaProjectPart::new()
        .add_module(VbaModule::new("AutoRun", r#"
Sub Auto_Open()
    MsgBox "Welcome to the presentation!"
End Sub

Sub NavigateToSlide(slideNum As Integer)
    SlideShowWindows(1).View.GotoSlide slideNum
End Sub
"#))
        .add_module(VbaModule::new("DataHelpers", r#"
Function GetCustomData(key As String) As String
    ' Read from Custom XML part
    GetCustomData = ActivePresentation.CustomXMLParts(1).SelectSingleNode("//" & key).Text
End Function
"#))
        .add_module(VbaModule::class("SlideController", r#"
Private currentSlide As Integer

Public Sub NextSlide()
    currentSlide = currentSlide + 1
    NavigateToSlide currentSlide
End Sub
"#));
    println!("   │   ├── VBA Project:");
    println!("   │   │   ├── AutoRun: Auto_Open, NavigateToSlide");
    println!("   │   │   ├── DataHelpers: GetCustomData (reads Custom XML)");
    println!("   │   │   └── SlideController: Class for navigation");

    // Custom XML with structured data
    let app_config = CustomXmlPart::new(1, "presentationConfig")
        .namespace("http://company.com/pptx/config")
        .property("version", "2.1.0")
        .property("author", "Demo User")
        .property("department", "Engineering")
        .property("confidentiality", "Internal")
        .property("lastModified", "2024-01-15T10:30:00Z");
    let config_xml = app_config.to_xml()?;
    println!("   │   └── Custom XML:");
    println!("   │       ├── Namespace: http://company.com/pptx/config");
    println!("   │       ├── Properties: version, author, department, etc.");
    println!("   │       └── XML: {} bytes", config_xml.len());

    // -------------------------------------------------------------------------
    // Embedded Fonts with Variants
    // -------------------------------------------------------------------------
    println!("   ├── Embedded Font Collection:");
    let mut font_collection = EmbeddedFontCollection::new();
    font_collection.add("Corporate Sans", vec![0; 1000]);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::Bold);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::Italic);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::BoldItalic);
    font_collection.add("Code Mono", vec![0; 800]);
    let fonts_xml = font_collection.to_xml();
    println!("   │   ├── Corporate Sans: Regular, Bold, Italic, BoldItalic");
    println!("   │   ├── Code Mono: Regular");
    println!("   │   ├── Total: {} font files", font_collection.len());
    println!("   │   └── XML: {} bytes", fonts_xml.len());

    // -------------------------------------------------------------------------
    // Handout with Full Configuration
    // -------------------------------------------------------------------------
    println!("   └── Handout Master Configuration:");
    let handout = HandoutMasterPart::new()
        .layout(HandoutLayout::SlidesPerPage6)
        .header("Q1 2024 Strategy Review")
        .footer("Confidential - Internal Use Only");
    let handout_xml = handout.to_xml()?;
    println!("       ├── Layout: 6 slides per page");
    println!("       ├── Header: Q1 2024 Strategy Review");
    println!("       ├── Footer: Confidential - Internal Use Only");
    println!("       └── XML: {} bytes", handout_xml.len());

    // =========================================================================
    // Summary
    // =========================================================================
    println!("\n╔══════════════════════════════════════════════════════════════╗");
    println!("║                    Element Coverage Summary                   ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  LAYOUTS (6 types):                                          ║");
    println!("║    ✓ CenteredTitle    ✓ TitleOnly      ✓ TitleAndContent     ║");
    println!("║    ✓ TitleAndBigContent  ✓ TwoColumn   ✓ Blank               ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  TEXT FORMATTING:                                            ║");
    println!("║    ✓ Bold            ✓ Italic         ✓ Underline            ║");
    println!("║    ✓ Font Size       ✓ Font Color     ✓ Title/Content styles ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  TABLES:                                                     ║");
    println!("║    ✓ Multiple rows/columns  ✓ Bold cells  ✓ Background colors║");
    println!("║    ✓ Header styling         ✓ Position control               ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  CHARTS:                                                     ║");
    println!("║    ✓ Bar Chart       ✓ Line Chart     ✓ Pie Chart            ║");
    println!("║    ✓ Multiple series ✓ Categories                            ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  SHAPES:                                                     ║");
    println!("║    ✓ Rectangle       ✓ Ellipse        ✓ RoundedRectangle     ║");
    println!("║    ✓ Triangle        ✓ Diamond        ✓ Color fills          ║");
    println!("║    ✓ Gradient fills  ✓ Transparency   ✓ Text in shapes       ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  CONNECTORS (NEW):                                           ║");
    println!("║    ✓ Straight        ✓ Elbow          ✓ Curved               ║");
    println!("║    ✓ Arrow types     ✓ Dash styles    ✓ Line colors/widths   ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  IMAGES:                                                     ║");
    println!("║    ✓ Image placeholders  ✓ Position   ✓ Dimensions           ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  PACKAGE:                                                    ║");
    println!("║    ✓ Create PPTX     ✓ Read PPTX      ✓ Analyze contents     ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  PARTS API (NEW):                                            ║");
    println!("║    ✓ SlideLayoutPart (11 types)  ✓ SlideMasterPart           ║");
    println!("║    ✓ ThemePart (colors/fonts)    ✓ NotesSlidePart            ║");
    println!("║    ✓ AppPropertiesPart           ✓ MediaPart (10 formats)    ║");
    println!("║    ✓ TablePart (cell formatting) ✓ ContentTypesPart          ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  ELEMENTS API:                                               ║");
    println!("║    ✓ RgbColor        ✓ SchemeColor    ✓ Color enum           ║");
    println!("║    ✓ Position        ✓ Size           ✓ Transform            ║");
    println!("║    ✓ EMU conversions (inches, cm, mm, pt)                    ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  ADVANCED FEATURES (NEW):                                    ║");
    println!("║    ✓ Animation (50+ effects)  ✓ Transitions (27 types)       ║");
    println!("║    ✓ SmartArt (25 layouts)    ✓ 3D Models (GLB/GLTF/OBJ)     ║");
    println!("║    ✓ VBA Macros (.pptm)       ✓ Embedded Fonts               ║");
    println!("║    ✓ Custom XML               ✓ Handout Master               ║");
    println!("║    ✓ Table borders/alignment  ✓ Merged cells                 ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  Output: comprehensive_demo.pptx ({} slides, {} KB)         ║", 
             slides.len(), pptx_data.len() / 1024);
    println!("╚══════════════════════════════════════════════════════════════╝");

    Ok(())
}

pub fn with_image(self) -> Self

pub fn layout(self, layout: SlideLayout) -> Self

Examples found in repository

examples/test_notes.rs (line 11)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    println!("Creating test presentation with speaker notes...");
    
    let slides = vec![
        SlideContent::new("Slide 1 - With Notes")
            .layout(SlideLayout::CenteredTitle)
            .title_size(54)
            .title_bold(true)
            .notes("This is a speaker note for slide 1. It should appear in presenter view."),
        
        SlideContent::new("Slide 2 - Also With Notes")
            .add_bullet("Bullet point 1")
            .add_bullet("Bullet point 2")
            .add_bullet("Bullet point 3")
            .notes("Notes for slide 2 with bullet points."),
        
        SlideContent::new("Slide 3 - No Notes")
            .add_bullet("This slide has no notes"),
        
        SlideContent::new("Slide 4 - More Notes")
            .layout(SlideLayout::TwoColumn)
            .add_bullet("Left 1")
            .add_bullet("Left 2")
            .add_bullet("Right 1")
            .add_bullet("Right 2")
            .notes("Two column layout with speaker notes."),
    ];
    
    let pptx_data = create_pptx_with_content("Test Notes", slides)?;
    fs::write("test_notes.pptx", &pptx_data)?;
    println!("Created test_notes.pptx ({} bytes)", pptx_data.len());
    println!("\nOpen in PowerPoint and check presenter view for notes!");
    
    Ok(())
}

examples/layout_demo.rs (line 7)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        // Slide 1: Title Only
        SlideContent::new("Welcome to Layout Demo")
            .layout(SlideLayout::TitleOnly),

        // Slide 2: Centered Title (good for cover slides)
        SlideContent::new("Centered Title Slide")
            .layout(SlideLayout::CenteredTitle)
            .title_size(60)
            .title_color("4F81BD"),

        // Slide 3: Title and Content (standard layout)
        SlideContent::new("Standard Layout")
            .add_bullet("Point 1: Title at top")
            .add_bullet("Point 2: Content below")
            .add_bullet("Point 3: Most common layout")
            .layout(SlideLayout::TitleAndContent),

        // Slide 4: Title and Big Content
        SlideContent::new("Big Content Area")
            .add_bullet("More space for content")
            .add_bullet("Smaller title area")
            .add_bullet("Good for detailed slides")
            .add_bullet("Maximizes content space")
            .layout(SlideLayout::TitleAndBigContent),

        // Slide 5: Two Column Layout
        SlideContent::new("Two Column Layout")
            .add_bullet("Left column content")
            .add_bullet("Organized side by side")
            .add_bullet("Great for comparisons")
            .layout(SlideLayout::TwoColumn),

        // Slide 6: Blank Slide
        SlideContent::new("")
            .layout(SlideLayout::Blank),

        // Slide 7: Summary with different formatting
        SlideContent::new("Summary")
            .title_size(48)
            .title_bold(true)
            .title_color("C0504D")
            .add_bullet("Layout types implemented:")
            .add_bullet("• TitleOnly - Just title")
            .add_bullet("• CenteredTitle - Title centered")
            .add_bullet("• TitleAndContent - Standard")
            .add_bullet("• TitleAndBigContent - Large content")
            .add_bullet("• TwoColumn - Side by side")
            .add_bullet("• Blank - Empty slide")
            .content_size(20)
            .layout(SlideLayout::TitleAndContent),
    ];

    let pptx_data = create_pptx_with_content("Layout Demo Presentation", slides)?;
    std::fs::write("layout_demo.pptx", pptx_data)?;
    println!("✓ Created layout_demo.pptx with 7 slides demonstrating different layouts");

    Ok(())
}

examples/new_elements_demo.rs (line 33)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    println!("=== New PPT Elements Demo ===\n");

    // Create slides demonstrating new features
    let slides = vec![
        // Slide 1: Title slide
        SlideContent::new("New PPT Elements in ppt-rs")
            .add_bullet("18 new chart types")
            .add_bullet("Connectors between shapes")
            .add_bullet("Hyperlinks (URL, slide, email)")
            .add_bullet("Gradient fills")
            .add_bullet("Video/Audio embedding")
            .layout(SlideLayout::TitleAndContent),

        // Slide 2: New Chart Types
        SlideContent::new("New Chart Types")
            .add_bullet("Area charts (standard, stacked, 100% stacked)")
            .add_bullet("Scatter charts (markers, lines, smooth)")
            .add_bullet("Doughnut charts")
            .add_bullet("Radar charts (standard, filled)")
            .add_bullet("Bubble charts")
            .add_bullet("Stock charts (HLC, OHLC)")
            .add_bullet("Combo charts (bar + line)")
            .layout(SlideLayout::TitleAndContent),

        // Slide 3: Connector Types
        SlideContent::new("Connector Types")
            .add_bullet("Straight connectors")
            .add_bullet("Elbow (bent) connectors")
            .add_bullet("Curved connectors")
            .add_bullet("Arrow heads (Triangle, Stealth, Diamond, Oval)")
            .add_bullet("Connection sites (Top, Bottom, Left, Right, Corners)")
            .layout(SlideLayout::TitleAndContent),

        // Slide 4: Hyperlink Types
        SlideContent::new("Hyperlink Support")
            .add_bullet("URL links (external websites)")
            .add_bullet("Slide links (navigate within presentation)")
            .add_bullet("Email links (mailto:)")
            .add_bullet("File links (local files)")
            .add_bullet("Navigation (First, Last, Next, Previous slide)")
            .layout(SlideLayout::TitleAndContent),

        // Slide 5: Gradient Fills
        SlideContent::new("Gradient Fill Support")
            .add_bullet("Linear gradients (horizontal, vertical, diagonal)")
            .add_bullet("Radial gradients")
            .add_bullet("Rectangular gradients")
            .add_bullet("Path gradients")
            .add_bullet("Preset gradients (Blue, Green, Rainbow, etc.)")
            .add_bullet("Custom gradient stops with transparency")
            .layout(SlideLayout::TitleAndContent),

        // Slide 6: Media Support
        SlideContent::new("Video & Audio Support")
            .add_bullet("Video formats: MP4, WMV, AVI, MOV, MKV, WebM")
            .add_bullet("Audio formats: MP3, WAV, WMA, M4A, OGG, FLAC")
            .add_bullet("Playback options: auto-play, loop, mute")
            .add_bullet("Volume control")
            .add_bullet("Start/end time trimming")
            .layout(SlideLayout::TitleAndContent),
    ];

    // Generate the PPTX
    let pptx_data = create_pptx_with_content("New Elements Demo", slides)?;

    // Save to file
    let output_path = "examples/output/new_elements_demo.pptx";
    std::fs::create_dir_all("examples/output")?;
    std::fs::write(output_path, &pptx_data)?;

    println!("✓ Created presentation: {}", output_path);
    println!("✓ File size: {} bytes", pptx_data.len());

    // Demonstrate API usage
    println!("\n=== API Examples ===\n");

    // Chart types
    println!("Chart Types:");
    let chart_types = [
        ChartType::Bar,
        ChartType::BarHorizontal,
        ChartType::BarStacked,
        ChartType::Line,
        ChartType::LineMarkers,
        ChartType::Pie,
        ChartType::Doughnut,
        ChartType::Area,
        ChartType::AreaStacked,
        ChartType::Scatter,
        ChartType::ScatterSmooth,
        ChartType::Bubble,
        ChartType::Radar,
        ChartType::RadarFilled,
        ChartType::StockHLC,
        ChartType::Combo,
    ];
    for ct in &chart_types {
        println!("  - {:?} -> {}", ct, ct.xml_element());
    }

    // Connector example
    println!("\nConnector Example:");
    let connector = Connector::elbow(
        inches_to_emu(1.0), inches_to_emu(1.0),
        inches_to_emu(5.0), inches_to_emu(3.0),
    )
    .with_color("0066CC")
    .with_end_arrow(ArrowType::Triangle)
    .connect_start(1, ConnectionSite::Right)
    .connect_end(2, ConnectionSite::Left);
    println!("  Type: {:?}", connector.connector_type);
    println!("  End Arrow: {:?}", connector.end_arrow);

    // Hyperlink example
    println!("\nHyperlink Examples:");
    let url_link = Hyperlink::url("https://example.com").with_tooltip("Visit Example");
    let slide_link = Hyperlink::slide(3);
    let email_link = Hyperlink::email("test@example.com");
    println!("  URL: {:?}", url_link.action);
    println!("  Slide: {:?}", slide_link.action);
    println!("  Email: {:?}", email_link.action);

    // Gradient example
    println!("\nGradient Examples:");
    let blue_gradient = PresetGradients::blue();
    let rainbow = PresetGradients::rainbow();
    let custom = GradientFill::linear(GradientDirection::DiagonalDown)
        .add_stop(ppt_rs::GradientStop::start("FF0000"))
        .add_stop(ppt_rs::GradientStop::end("0000FF"));
    println!("  Blue gradient: {} stops", blue_gradient.stops.len());
    println!("  Rainbow gradient: {} stops", rainbow.stops.len());
    println!("  Custom gradient: {} stops", custom.stops.len());

    // Video example
    println!("\nVideo Example:");
    if let Some(video) = Video::from_file("video.mp4", 0, 0, inches_to_emu(6.0), inches_to_emu(4.0)) {
        let video = video.with_options(VideoOptions::auto_play().with_loop(true));
        println!("  Format: {:?}", video.format);
        println!("  Auto-play: {}", video.options.auto_play);
        println!("  Loop: {}", video.options.loop_playback);
    }

    // Audio example
    println!("\nAudio Example:");
    if let Some(audio) = Audio::from_file("audio.mp3", 0, 0, inches_to_emu(1.0), inches_to_emu(1.0)) {
        let audio = audio.with_options(AudioOptions::auto_play().with_play_across_slides(true));
        println!("  Format: {:?}", audio.format);
        println!("  Auto-play: {}", audio.options.auto_play);
        println!("  Play across slides: {}", audio.options.play_across_slides);
    }

    println!("\n=== Demo Complete ===");

    Ok(())
}

examples/edit_presentation.rs (line 26)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    println!("╔════════════════════════════════════════════════════════════╗");
    println!("║         PPTX Editing Demo                                  ║");
    println!("╚════════════════════════════════════════════════════════════╝\n");

    // =========================================================================
    // Step 1: Create an initial presentation
    // =========================================================================
    println!("📝 Step 1: Creating initial presentation...");
    
    let initial_slides = vec![
        SlideContent::new("Original Presentation")
            .layout(SlideLayout::CenteredTitle)
            .title_bold(true)
            .title_color("1F497D"),
        
        SlideContent::new("Slide 1: Introduction")
            .add_bullet("This is the original content")
            .add_bullet("Created programmatically"),
        
        SlideContent::new("Slide 2: Features")
            .add_bullet("Feature A")
            .add_bullet("Feature B")
            .add_bullet("Feature C"),
    ];
    
    let pptx_data = create_pptx_with_content("Original Presentation", initial_slides)?;
    fs::write("original.pptx", &pptx_data)?;
    println!("   ✓ Created original.pptx with 3 slides\n");

    // =========================================================================
    // Step 2: Open and inspect the presentation
    // =========================================================================
    println!("📖 Step 2: Opening presentation for editing...");
    
    let mut editor = PresentationEditor::open("original.pptx")?;
    println!("   ✓ Opened original.pptx");
    println!("   ├── Slide count: {}", editor.slide_count());
    
    // Read first slide
    let slide0 = editor.get_slide(0)?;
    println!("   └── First slide title: {:?}\n", slide0.title);

    // =========================================================================
    // Step 3: Add new slides
    // =========================================================================
    println!("➕ Step 3: Adding new slides...");
    
    // Add a new slide at the end
    let new_slide1 = SlideContent::new("New Slide: Added via Editor")
        .add_bullet("This slide was added programmatically")
        .add_bullet("Using PresentationEditor")
        .add_bullet("After the presentation was created")
        .title_color("9BBB59");
    
    let idx1 = editor.add_slide(new_slide1)?;
    println!("   ✓ Added slide at index {}", idx1);
    
    // Add another slide
    let new_slide2 = SlideContent::new("Another New Slide")
        .layout(SlideLayout::TwoColumn)
        .add_bullet("Left column item 1")
        .add_bullet("Left column item 2")
        .add_bullet("Right column item 1")
        .add_bullet("Right column item 2");
    
    let idx2 = editor.add_slide(new_slide2)?;
    println!("   ✓ Added slide at index {}", idx2);
    println!("   └── Total slides now: {}\n", editor.slide_count());

    // =========================================================================
    // Step 4: Update existing slide
    // =========================================================================
    println!("✏️  Step 4: Updating existing slide...");
    
    let updated_slide = SlideContent::new("Slide 2: Updated Features")
        .add_bullet("Feature A - Enhanced!")
        .add_bullet("Feature B - Improved!")
        .add_bullet("Feature C - Optimized!")
        .add_bullet("Feature D - NEW!")
        .title_color("C0504D")
        .content_bold(true);
    
    editor.update_slide(2, updated_slide)?;
    println!("   ✓ Updated slide at index 2\n");

    // =========================================================================
    // Step 5: Save modified presentation
    // =========================================================================
    println!("💾 Step 5: Saving modified presentation...");
    
    editor.save("modified.pptx")?;
    println!("   ✓ Saved as modified.pptx\n");

    // =========================================================================
    // Step 6: Verify the changes
    // =========================================================================
    println!("🔍 Step 6: Verifying changes...");
    
    let reader = PresentationReader::open("modified.pptx")?;
    println!("   Modified presentation:");
    println!("   ├── Slide count: {}", reader.slide_count());
    
    for i in 0..reader.slide_count() {
        let slide = reader.get_slide(i)?;
        let title = slide.title.as_deref().unwrap_or("(no title)");
        let bullets = slide.body_text.len();
        println!("   {}── Slide {}: \"{}\" ({} bullets)", 
                 if i == reader.slide_count() - 1 { "└" } else { "├" },
                 i + 1, 
                 title,
                 bullets);
    }

    // =========================================================================
    // Step 7: Demonstrate slide removal
    // =========================================================================
    println!("\n🗑️  Step 7: Demonstrating slide removal...");
    
    let mut editor2 = PresentationEditor::open("modified.pptx")?;
    println!("   Before removal: {} slides", editor2.slide_count());
    
    // Remove the last slide
    editor2.remove_slide(editor2.slide_count() - 1)?;
    println!("   ✓ Removed last slide");
    println!("   After removal: {} slides", editor2.slide_count());
    
    editor2.save("trimmed.pptx")?;
    println!("   ✓ Saved as trimmed.pptx");

    // Cleanup
    fs::remove_file("original.pptx").ok();
    fs::remove_file("modified.pptx").ok();
    fs::remove_file("trimmed.pptx").ok();

    // =========================================================================
    // Summary
    // =========================================================================
    println!("\n╔════════════════════════════════════════════════════════════╗");
    println!("║                    Demo Complete                           ║");
    println!("╠════════════════════════════════════════════════════════════╣");
    println!("║  Capabilities Demonstrated:                                ║");
    println!("║  ✓ PresentationEditor::open() - Open for editing           ║");
    println!("║  ✓ editor.add_slide() - Add new slides                     ║");
    println!("║  ✓ editor.update_slide() - Modify existing slides          ║");
    println!("║  ✓ editor.remove_slide() - Remove slides                   ║");
    println!("║  ✓ editor.save() - Save modified presentation              ║");
    println!("║  ✓ editor.get_slide() - Read slide content                 ║");
    println!("╚════════════════════════════════════════════════════════════╝");

    Ok(())
}

examples/read_presentation.rs (line 25)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    println!("╔════════════════════════════════════════════════════════════╗");
    println!("║         PPTX Reading & Parsing Demo                        ║");
    println!("╚════════════════════════════════════════════════════════════╝\n");

    // =========================================================================
    // Step 1: Create a sample PPTX to read
    // =========================================================================
    println!("📝 Step 1: Creating sample presentation...");
    
    let slides = vec![
        SlideContent::new("Welcome to PPTX-RS")
            .layout(SlideLayout::CenteredTitle)
            .title_bold(true)
            .title_color("1F497D"),
        
        SlideContent::new("Features Overview")
            .add_bullet("Create presentations programmatically")
            .add_bullet("Read existing PPTX files")
            .add_bullet("Extract text and metadata")
            .add_bullet("Parse shapes and tables"),
        
        SlideContent::new("Technical Details")
            .layout(SlideLayout::TwoColumn)
            .add_bullet("XML parsing with xml-rs")
            .add_bullet("ZIP handling with zip crate")
            .add_bullet("ECMA-376 compliant")
            .add_bullet("Rust 2024 edition")
            .add_bullet("Cross-platform")
            .add_bullet("No external dependencies"),
        
        SlideContent::new("Summary")
            .add_bullet("Full read/write support")
            .add_bullet("Comprehensive API")
            .add_bullet("Well tested"),
    ];
    
    let pptx_data = create_pptx_with_content("PPTX-RS Demo", slides)?;
    fs::write("sample_presentation.pptx", &pptx_data)?;
    println!("   ✓ Created sample_presentation.pptx ({} bytes)\n", pptx_data.len());

    // =========================================================================
    // Step 2: Open and read the presentation
    // =========================================================================
    println!("📖 Step 2: Opening presentation...");
    
    let reader = PresentationReader::open("sample_presentation.pptx")?;
    let info = reader.info();
    
    println!("   Presentation Info:");
    println!("   ├── Title: {}", info.title.as_deref().unwrap_or("(none)"));
    println!("   ├── Creator: {}", info.creator.as_deref().unwrap_or("(none)"));
    println!("   ├── Slides: {}", info.slide_count);
    println!("   └── Revision: {}\n", info.revision.unwrap_or(0));

    // =========================================================================
    // Step 3: Parse each slide
    // =========================================================================
    println!("📑 Step 3: Parsing slides...");
    
    for i in 0..reader.slide_count() {
        let slide = reader.get_slide(i)?;
        
        println!("\n   Slide {}:", i + 1);
        println!("   ├── Title: {}", slide.title.as_deref().unwrap_or("(none)"));
        println!("   ├── Shapes: {}", slide.shapes.len());
        println!("   ├── Tables: {}", slide.tables.len());
        
        if !slide.body_text.is_empty() {
            println!("   └── Body text:");
            for (j, text) in slide.body_text.iter().enumerate() {
                let prefix = if j == slide.body_text.len() - 1 { "       └──" } else { "       ├──" };
                println!("{}  {}", prefix, text);
            }
        } else {
            println!("   └── Body text: (none)");
        }
    }

    // =========================================================================
    // Step 4: Extract all text
    // =========================================================================
    println!("\n📋 Step 4: Extracting all text...");
    
    let all_text = reader.extract_all_text()?;
    println!("   Found {} text items:", all_text.len());
    for (i, text) in all_text.iter().take(10).enumerate() {
        println!("   {}. {}", i + 1, text);
    }
    if all_text.len() > 10 {
        println!("   ... and {} more", all_text.len() - 10);
    }

    // =========================================================================
    // Step 5: Direct XML parsing (advanced)
    // =========================================================================
    println!("\n🔧 Step 5: Direct XML parsing (advanced)...");
    
    // You can also parse slide XML directly
    let sample_xml = r#"<?xml version="1.0" encoding="UTF-8"?>
    <p:sld xmlns:a="http://schemas.openxmlformats.org/drawingml/2006/main" 
           xmlns:p="http://schemas.openxmlformats.org/presentationml/2006/main">
        <p:cSld>
            <p:spTree>
                <p:sp>
                    <p:nvSpPr>
                        <p:cNvPr id="2" name="Title"/>
                        <p:nvPr><p:ph type="title"/></p:nvPr>
                    </p:nvSpPr>
                    <p:txBody>
                        <a:p>
                            <a:r>
                                <a:rPr b="1" sz="4400"/>
                                <a:t>Direct Parse Example</a:t>
                            </a:r>
                        </a:p>
                    </p:txBody>
                </p:sp>
            </p:spTree>
        </p:cSld>
    </p:sld>"#;
    
    let parsed = SlideParser::parse(sample_xml)?;
    println!("   Parsed XML directly:");
    println!("   ├── Title: {}", parsed.title.as_deref().unwrap_or("(none)"));
    println!("   └── Shapes: {}", parsed.shapes.len());
    
    if let Some(shape) = parsed.shapes.first() {
        if let Some(para) = shape.paragraphs.first() {
            if let Some(run) = para.runs.first() {
                println!("\n   Text formatting detected:");
                println!("   ├── Bold: {}", run.bold);
                println!("   ├── Font size: {:?}", run.font_size);
                println!("   └── Text: {}", run.text);
            }
        }
    }

    // Cleanup
    fs::remove_file("sample_presentation.pptx").ok();

    // =========================================================================
    // Summary
    // =========================================================================
    println!("\n╔════════════════════════════════════════════════════════════╗");
    println!("║                    Demo Complete                           ║");
    println!("╠════════════════════════════════════════════════════════════╣");
    println!("║  Capabilities Demonstrated:                                ║");
    println!("║  ✓ PresentationReader::open() - Open PPTX files            ║");
    println!("║  ✓ reader.info() - Get presentation metadata               ║");
    println!("║  ✓ reader.get_slide(i) - Parse individual slides           ║");
    println!("║  ✓ reader.extract_all_text() - Extract all text            ║");
    println!("║  ✓ SlideParser::parse() - Direct XML parsing               ║");
    println!("╚════════════════════════════════════════════════════════════╝");

    Ok(())
}

examples/comprehensive_demo.rs (line 81)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    println!("╔══════════════════════════════════════════════════════════════╗");
    println!("║       PPTX-RS Element Showcase - Complete Coverage           ║");
    println!("╚══════════════════════════════════════════════════════════════╝\n");

    let mut slides = Vec::new();

    // =========================================================================
    // SLIDE 1: CenteredTitle Layout + Title Formatting
    // =========================================================================
    println!("📐 Slide 1: CenteredTitle Layout + Title Formatting");
    slides.push(
        SlideContent::new("PPTX-RS Element Showcase")
            .layout(SlideLayout::CenteredTitle)
            .title_size(54)
            .title_bold(true)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 2: TitleOnly Layout
    // =========================================================================
    println!("📐 Slide 2: TitleOnly Layout");
    slides.push(
        SlideContent::new("Section: Slide Layouts")
            .layout(SlideLayout::TitleOnly)
            .title_size(48)
            .title_bold(true)
            .title_color("C0504D")
    );

    // =========================================================================
    // SLIDE 3: TitleAndContent Layout + All Text Formatting
    // =========================================================================
    println!("📝 Slide 3: TitleAndContent + Text Formatting");
    slides.push(
        SlideContent::new("Text Formatting Options")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .title_italic(true)
            .title_underline(true)
            .title_size(44)
            .add_bullet("Normal text (default)")
            .add_bullet("Bold content text")
            .add_bullet("Italic content text")
            .add_bullet("Underlined content")
            .add_bullet("Custom font size (28pt)")
            .add_bullet("Custom color (#4F81BD)")
            .content_bold(true)
            .content_italic(true)
            .content_underline(true)
            .content_size(28)
            .content_color("4F81BD")
    );

    // =========================================================================
    // SLIDE 4: TitleAndBigContent Layout
    // =========================================================================
    println!("📐 Slide 4: TitleAndBigContent Layout");
    slides.push(
        SlideContent::new("Key Highlights")
            .layout(SlideLayout::TitleAndBigContent)
            .title_color("1F497D")
            .add_bullet("Large content area for emphasis")
            .add_bullet("Perfect for key messages")
            .add_bullet("Smaller title, bigger content")
            .content_bold(true)
            .content_size(32)
    );

    // =========================================================================
    // SLIDE 5: TwoColumn Layout
    // =========================================================================
    println!("📐 Slide 5: TwoColumn Layout");
    slides.push(
        SlideContent::new("Two Column Comparison")
            .layout(SlideLayout::TwoColumn)
            .title_color("1F497D")
            .add_bullet("Left Column Item 1")
            .add_bullet("Left Column Item 2")
            .add_bullet("Left Column Item 3")
            .add_bullet("Right Column Item 1")
            .add_bullet("Right Column Item 2")
            .add_bullet("Right Column Item 3")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 6: Blank Layout
    // =========================================================================
    println!("📐 Slide 6: Blank Layout");
    slides.push(
        SlideContent::new("")
            .layout(SlideLayout::Blank)
    );

    // =========================================================================
    // SLIDE 7: Table with All Cell Styling Options
    // =========================================================================
    println!("📊 Slide 7: Table with Cell Styling");
    let styled_table = TableBuilder::new(vec![1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Header 1").bold().background_color("1F497D"),
            TableCell::new("Header 2").bold().background_color("4F81BD"),
            TableCell::new("Header 3").bold().background_color("8064A2"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Bold Cell").bold(),
            TableCell::new("Normal Cell"),
            TableCell::new("Colored").background_color("9BBB59"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Red BG").background_color("C0504D"),
            TableCell::new("Green BG").background_color("9BBB59"),
            TableCell::new("Blue BG").background_color("4F81BD"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Row 3 Col 1"),
            TableCell::new("Row 3 Col 2"),
            TableCell::new("Row 3 Col 3").bold().background_color("F79646"),
        ]))
        .position(500000, 1800000)
        .build();
    
    slides.push(
        SlideContent::new("Table with Cell Styling")
            .table(styled_table)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 8: Charts (Bar, Line, Pie)
    // =========================================================================
    println!("📈 Slide 8: Chart Types");
    
    // Create chart data structures (for demonstration)
    let _bar_chart = ChartBuilder::new("Sales by Region", ChartType::Bar)
        .categories(vec!["North", "South", "East", "West"])
        .add_series(ChartSeries::new("2023", vec![100.0, 80.0, 120.0, 90.0]))
        .add_series(ChartSeries::new("2024", vec![120.0, 95.0, 140.0, 110.0]))
        .build();
    
    let _line_chart = ChartBuilder::new("Monthly Trend", ChartType::Line)
        .categories(vec!["Jan", "Feb", "Mar", "Apr", "May", "Jun"])
        .add_series(ChartSeries::new("Revenue", vec![10.0, 12.0, 15.0, 14.0, 18.0, 22.0]))
        .build();
    
    let _pie_chart = ChartBuilder::new("Market Share", ChartType::Pie)
        .categories(vec!["Product A", "Product B", "Product C", "Others"])
        .add_series(ChartSeries::new("Share", vec![40.0, 30.0, 20.0, 10.0]))
        .build();
    
    slides.push(
        SlideContent::new("Chart Types: Bar, Line, Pie")
            .with_chart()
            .title_color("1F497D")
            .add_bullet("Bar Chart: Compare categories")
            .add_bullet("Line Chart: Show trends over time")
            .add_bullet("Pie Chart: Show proportions")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 9: Shapes with Different Fills
    // =========================================================================
    println!("🔷 Slide 9: Shapes with Fills");
    
    let rect = Shape::new(ShapeType::Rectangle, 500000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("4F81BD"))
        .with_text("Rectangle");
    
    let ellipse = Shape::new(ShapeType::Ellipse, 3000000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("9BBB59"))
        .with_text("Ellipse");
    
    let rounded = Shape::new(ShapeType::RoundedRectangle, 5500000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("C0504D"))
        .with_text("Rounded");
    
    let triangle = Shape::new(ShapeType::Triangle, 1500000, 3000000, 1500000, 1200000)
        .with_fill(ShapeFill::new("8064A2"))
        .with_text("Triangle");
    
    let diamond = Shape::new(ShapeType::Diamond, 4000000, 3000000, 1500000, 1200000)
        .with_fill(ShapeFill::new("F79646"))
        .with_text("Diamond");
    
    slides.push(
        SlideContent::new("Shape Types with Color Fills")
            .add_shape(rect)
            .add_shape(ellipse)
            .add_shape(rounded)
            .add_shape(triangle)
            .add_shape(diamond)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 10: Gradient Fills (NEW)
    // =========================================================================
    println!("🌈 Slide 10: Gradient Fills");
    
    // Horizontal gradient
    let gradient_h = Shape::new(ShapeType::Rectangle, 500000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("1565C0", "42A5F5", GradientDirection::Horizontal))
        .with_text("Horizontal");
    
    // Vertical gradient
    let gradient_v = Shape::new(ShapeType::Rectangle, 3200000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("2E7D32", "81C784", GradientDirection::Vertical))
        .with_text("Vertical");
    
    // Diagonal gradient
    let gradient_d = Shape::new(ShapeType::RoundedRectangle, 5900000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("C62828", "EF9A9A", GradientDirection::DiagonalDown))
        .with_text("Diagonal");
    
    // Three-color gradient
    let gradient_3 = Shape::new(ShapeType::Ellipse, 1800000, 3200000, 2500000, 1200000)
        .with_gradient(GradientFill::three_color("FF6F00", "FFC107", "FFEB3B", GradientDirection::Horizontal))
        .with_text("3-Color");
    
    // Custom angle gradient
    let gradient_angle = Shape::new(ShapeType::RoundedRectangle, 4800000, 3200000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("7B1FA2", "E1BEE7", GradientDirection::Angle(135)))
        .with_text("135° Angle");
    
    slides.push(
        SlideContent::new("Gradient Fills - Multiple Directions")
            .add_shape(gradient_h)
            .add_shape(gradient_v)
            .add_shape(gradient_d)
            .add_shape(gradient_3)
            .add_shape(gradient_angle)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 11: Transparency (NEW)
    // =========================================================================
    println!("👻 Slide 11: Transparency Effects");
    
    // Base shape (fully opaque)
    let base = Shape::new(ShapeType::Rectangle, 1000000, 1800000, 3000000, 2000000)
        .with_fill(ShapeFill::new("1565C0"))
        .with_text("Base (100%)");
    
    // 25% transparent overlay
    let trans_25 = Shape::new(ShapeType::Rectangle, 2000000, 2200000, 2500000, 1500000)
        .with_fill(ShapeFill::new("F44336").with_transparency(25))
        .with_line(ShapeLine::new("B71C1C", 25400))
        .with_text("25% Transparent");
    
    // 50% transparent overlay
    let trans_50 = Shape::new(ShapeType::Ellipse, 4500000, 1800000, 2500000, 2000000)
        .with_fill(ShapeFill::new("4CAF50").with_transparency(50))
        .with_line(ShapeLine::new("1B5E20", 25400))
        .with_text("50% Transparent");
    
    // 75% transparent overlay
    let trans_75 = Shape::new(ShapeType::RoundedRectangle, 5500000, 2500000, 2500000, 1500000)
        .with_fill(ShapeFill::new("FF9800").with_transparency(75))
        .with_line(ShapeLine::new("E65100", 25400))
        .with_text("75% Transparent");
    
    slides.push(
        SlideContent::new("Transparency Effects - Overlapping Shapes")
            .add_shape(base)
            .add_shape(trans_25)
            .add_shape(trans_50)
            .add_shape(trans_75)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 12: Styled Connectors (NEW)
    // =========================================================================
    println!("🔗 Slide 12: Styled Connectors");
    
    // Create shapes to connect
    let box1 = Shape::new(ShapeType::RoundedRectangle, 500000, 1800000, 1800000, 800000)
        .with_id(100)
        .with_fill(ShapeFill::new("1565C0"))
        .with_text("Start");
    
    let box2 = Shape::new(ShapeType::RoundedRectangle, 3500000, 1800000, 1800000, 800000)
        .with_id(101)
        .with_fill(ShapeFill::new("2E7D32"))
        .with_text("Process");
    
    let box3 = Shape::new(ShapeType::RoundedRectangle, 6500000, 1800000, 1800000, 800000)
        .with_id(102)
        .with_fill(ShapeFill::new("C62828"))
        .with_text("End");
    
    // Straight connector with arrow
    let conn1 = Connector::straight(2300000, 2200000, 3500000, 2200000)
        .with_line(ConnectorLine::new("1565C0", 25400))
        .with_end_arrow(ArrowType::Triangle)
        .with_arrow_size(ArrowSize::Large);
    
    // Elbow connector with stealth arrow
    let conn2 = Connector::elbow(5300000, 2200000, 6500000, 2200000)
        .with_line(ConnectorLine::new("2E7D32", 38100).with_dash(LineDash::Dash))
        .with_end_arrow(ArrowType::Stealth)
        .with_arrow_size(ArrowSize::Medium);
    
    // Curved connector examples
    let box4 = Shape::new(ShapeType::Ellipse, 1000000, 3200000, 1500000, 800000)
        .with_id(103)
        .with_fill(ShapeFill::new("7B1FA2"))
        .with_text("A");
    
    let box5 = Shape::new(ShapeType::Ellipse, 4000000, 3200000, 1500000, 800000)
        .with_id(104)
        .with_fill(ShapeFill::new("00838F"))
        .with_text("B");
    
    let box6 = Shape::new(ShapeType::Ellipse, 7000000, 3200000, 1500000, 800000)
        .with_id(105)
        .with_fill(ShapeFill::new("EF6C00"))
        .with_text("C");
    
    // Curved connector with diamond arrow
    let conn3 = Connector::curved(2500000, 3600000, 4000000, 3600000)
        .with_line(ConnectorLine::new("7B1FA2", 19050).with_dash(LineDash::DashDot))
        .with_arrows(ArrowType::Oval, ArrowType::Diamond);
    
    // Dotted connector
    let conn4 = Connector::straight(5500000, 3600000, 7000000, 3600000)
        .with_line(ConnectorLine::new("00838F", 12700).with_dash(LineDash::Dot))
        .with_end_arrow(ArrowType::Open);
    
    slides.push(
        SlideContent::new("Styled Connectors - Types, Arrows, Dashes")
            .add_shape(box1)
            .add_shape(box2)
            .add_shape(box3)
            .add_shape(box4)
            .add_shape(box5)
            .add_shape(box6)
            .add_connector(conn1)
            .add_connector(conn2)
            .add_connector(conn3)
            .add_connector(conn4)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 13: Images
    // =========================================================================
    println!("🖼️  Slide 13: Image Placeholders");
    
    let img1 = Image::new("logo.png", 2500000, 1800000, "png")
        .position(500000, 1600000);
    let img2 = Image::new("photo.jpg", 2500000, 1800000, "jpg")
        .position(3500000, 1600000);
    let img3 = Image::new("diagram.png", 2000000, 1800000, "png")
        .position(6500000, 1600000);
    
    slides.push(
        SlideContent::new("Image Placeholders")
            .add_image(img1)
            .add_image(img2)
            .add_image(img3)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 11: Advanced Table with Borders & Alignment (NEW)
    // =========================================================================
    println!("📊 Slide 11: Advanced Table (borders, alignment, merged cells)");
    
    // Build advanced table using generator's TableBuilder with alignment
    let advanced_table = TableBuilder::new(vec![2000000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2024 Financial Report").bold().background_color("1F4E79").text_color("FFFFFF").align_center().font_size(14),
            TableCell::new("").background_color("1F4E79"),
            TableCell::new("").background_color("1F4E79"),
            TableCell::new("").background_color("1F4E79"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Category").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Revenue").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Expenses").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Profit").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Product Sales").text_color("000000").align_left(),
            TableCell::new("$1,250,000").text_color("2E7D32").align_right(),
            TableCell::new("$450,000").text_color("C62828").align_right(),
            TableCell::new("$800,000").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Services").text_color("000000").align_left(),
            TableCell::new("$890,000").text_color("2E7D32").align_right(),
            TableCell::new("$320,000").text_color("C62828").align_right(),
            TableCell::new("$570,000").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Total").bold().background_color("E7E6E6").text_color("000000").align_left(),
            TableCell::new("$2,140,000").bold().background_color("E7E6E6").text_color("000000").align_right(),
            TableCell::new("$770,000").bold().background_color("E7E6E6").text_color("000000").align_right(),
            TableCell::new("$1,370,000").bold().background_color("C6EFCE").text_color("006100").align_right(),
        ]))
        .position(300000, 1600000)
        .build();
    
    slides.push(
        SlideContent::new("Financial Report - Advanced Table")
            .table(advanced_table)
            .title_color("1F4E79")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 12: Comparison Matrix Table (NEW)
    // =========================================================================
    println!("📊 Slide 12: Comparison Matrix Table");
    
    let comparison_table = TableBuilder::new(vec![2000000, 1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Feature").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Basic").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Pro").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Enterprise").bold().background_color("4472C4").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Storage").text_color("000000"),
            TableCell::new("5 GB").text_color("000000"),
            TableCell::new("50 GB").text_color("000000"),
            TableCell::new("Unlimited").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Users").text_color("000000"),
            TableCell::new("1").text_color("000000"),
            TableCell::new("10").text_color("000000"),
            TableCell::new("Unlimited").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Support").text_color("000000"),
            TableCell::new("Email").text_color("000000"),
            TableCell::new("24/7 Chat").text_color("000000"),
            TableCell::new("Dedicated").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("API Access").text_color("000000"),
            TableCell::new("No").text_color("C62828"),
            TableCell::new("Yes").text_color("2E7D32"),
            TableCell::new("Yes + Priority").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Price/month").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$9").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$29").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$99").bold().background_color("F2F2F2").text_color("000000"),
        ]))
        .position(500000, 1600000)
        .build();
    
    slides.push(
        SlideContent::new("Pricing Comparison Matrix")
            .table(comparison_table)
            .title_color("4472C4")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 13: Process Flow with Shapes (NEW - SmartArt-like)
    // =========================================================================
    println!("🔷 Slide 13: Process Flow (SmartArt-style)");
    
    // Create process flow using shapes
    let step1 = Shape::new(ShapeType::RoundedRectangle, 300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("1. Research");
    let arrow1 = Shape::new(ShapeType::RightArrow, 1800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step2 = Shape::new(ShapeType::RoundedRectangle, 2300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("2. Design");
    let arrow2 = Shape::new(ShapeType::RightArrow, 3800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step3 = Shape::new(ShapeType::RoundedRectangle, 4300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("3. Develop");
    let arrow3 = Shape::new(ShapeType::RightArrow, 5800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step4 = Shape::new(ShapeType::RoundedRectangle, 6300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("5B9BD5"))
        .with_text("4. Deploy");
    
    slides.push(
        SlideContent::new("Development Process Flow")
            .add_shape(step1)
            .add_shape(arrow1)
            .add_shape(step2)
            .add_shape(arrow2)
            .add_shape(step3)
            .add_shape(arrow3)
            .add_shape(step4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 14: Organization Chart with Shapes (NEW)
    // =========================================================================
    println!("🔷 Slide 14: Organization Chart");
    
    // CEO at top
    let ceo = Shape::new(ShapeType::RoundedRectangle, 3500000, 1400000, 2000000, 600000)
        .with_fill(ShapeFill::new("1F4E79"))
        .with_text("CEO");
    
    // Vertical line from CEO
    let line1 = Shape::new(ShapeType::Rectangle, 4450000, 2000000, 100000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // Horizontal connector
    let hline = Shape::new(ShapeType::Rectangle, 1950000, 2400000, 5100000, 50000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // CTO, CFO, COO
    let cto = Shape::new(ShapeType::RoundedRectangle, 1000000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("CTO");
    let cfo = Shape::new(ShapeType::RoundedRectangle, 3600000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("CFO");
    let coo = Shape::new(ShapeType::RoundedRectangle, 6200000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("COO");
    
    // Vertical lines to departments
    let vline1 = Shape::new(ShapeType::Rectangle, 1850000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let vline2 = Shape::new(ShapeType::Rectangle, 4450000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let vline3 = Shape::new(ShapeType::Rectangle, 7050000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // Teams under CTO
    let eng = Shape::new(ShapeType::Rectangle, 500000, 3300000, 1200000, 400000)
        .with_fill(ShapeFill::new("BDD7EE"))
        .with_text("Engineering");
    let product = Shape::new(ShapeType::Rectangle, 1800000, 3300000, 1200000, 400000)
        .with_fill(ShapeFill::new("BDD7EE"))
        .with_text("Product");
    
    slides.push(
        SlideContent::new("Organization Structure")
            .add_shape(ceo)
            .add_shape(line1)
            .add_shape(hline)
            .add_shape(cto)
            .add_shape(cfo)
            .add_shape(coo)
            .add_shape(vline1)
            .add_shape(vline2)
            .add_shape(vline3)
            .add_shape(eng)
            .add_shape(product)
            .title_color("1F4E79")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 15: PDCA Cycle Diagram (NEW)
    // =========================================================================
    println!("🔷 Slide 15: PDCA Cycle Diagram");
    
    // Four quadrants for PDCA
    let plan = Shape::new(ShapeType::RoundedRectangle, 1500000, 1600000, 2500000, 1500000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("PLAN\n\nDefine goals\nand strategy");
    let do_box = Shape::new(ShapeType::RoundedRectangle, 4500000, 1600000, 2500000, 1500000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("DO\n\nImplement\nthe plan");
    let check = Shape::new(ShapeType::RoundedRectangle, 4500000, 3300000, 2500000, 1500000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("CHECK\n\nMeasure\nresults");
    let act = Shape::new(ShapeType::RoundedRectangle, 1500000, 3300000, 2500000, 1500000)
        .with_fill(ShapeFill::new("FFC000"))
        .with_text("ACT\n\nAdjust and\nimprove");
    
    // Arrows between quadrants
    let arr1 = Shape::new(ShapeType::RightArrow, 4100000, 2100000, 300000, 300000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr2 = Shape::new(ShapeType::DownArrow, 5600000, 3200000, 300000, 200000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr3 = Shape::new(ShapeType::LeftArrow, 4100000, 3800000, 300000, 300000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr4 = Shape::new(ShapeType::UpArrow, 2600000, 3200000, 300000, 200000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    slides.push(
        SlideContent::new("PDCA Continuous Improvement Cycle")
            .add_shape(plan)
            .add_shape(do_box)
            .add_shape(check)
            .add_shape(act)
            .add_shape(arr1)
            .add_shape(arr2)
            .add_shape(arr3)
            .add_shape(arr4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 16: Pyramid Diagram (Maslow's Hierarchy) (NEW)
    // =========================================================================
    println!("🔷 Slide 16: Pyramid Diagram");
    
    // Build pyramid from bottom to top
    let level5 = Shape::new(ShapeType::Trapezoid, 500000, 4000000, 8000000, 600000)
        .with_fill(ShapeFill::new("C00000"))
        .with_text("Physiological Needs - Food, Water, Shelter");
    let level4 = Shape::new(ShapeType::Trapezoid, 1000000, 3400000, 7000000, 600000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Safety Needs - Security, Stability");
    let level3 = Shape::new(ShapeType::Trapezoid, 1500000, 2800000, 6000000, 600000)
        .with_fill(ShapeFill::new("FFC000"))
        .with_text("Love & Belonging - Relationships");
    let level2 = Shape::new(ShapeType::Trapezoid, 2000000, 2200000, 5000000, 600000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Esteem - Achievement, Respect");
    let level1 = Shape::new(ShapeType::Triangle, 2500000, 1500000, 4000000, 700000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Self-Actualization");
    
    slides.push(
        SlideContent::new("Maslow's Hierarchy of Needs")
            .add_shape(level5)
            .add_shape(level4)
            .add_shape(level3)
            .add_shape(level2)
            .add_shape(level1)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 17: Venn Diagram (NEW)
    // =========================================================================
    println!("🔷 Slide 17: Venn Diagram");
    
    // Three overlapping circles
    let circle1 = Shape::new(ShapeType::Ellipse, 1500000, 1800000, 3000000, 3000000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Skills");
    let circle2 = Shape::new(ShapeType::Ellipse, 3500000, 1800000, 3000000, 3000000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Passion");
    let circle3 = Shape::new(ShapeType::Ellipse, 2500000, 3200000, 3000000, 3000000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Market Need");
    
    // Center label
    let center = Shape::new(ShapeType::Ellipse, 3200000, 2800000, 1600000, 800000)
        .with_fill(ShapeFill::new("FFFFFF"))
        .with_text("IKIGAI");
    
    slides.push(
        SlideContent::new("Finding Your Ikigai - Venn Diagram")
            .add_shape(circle1)
            .add_shape(circle2)
            .add_shape(circle3)
            .add_shape(center)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 18: Timeline/Roadmap (NEW)
    // =========================================================================
    println!("📊 Slide 18: Project Timeline");
    
    let timeline_table = TableBuilder::new(vec![1500000, 1500000, 1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q2 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q3 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q4 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q1 2025").bold().background_color("4472C4").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Research\n& Planning").background_color("BDD7EE").text_color("1F497D"),
            TableCell::new("Design\nPhase").background_color("BDD7EE").text_color("1F497D"),
            TableCell::new("Development\nSprint 1-3").background_color("C6EFCE").text_color("006100"),
            TableCell::new("Testing\n& QA").background_color("FCE4D6").text_color("C65911"),
            TableCell::new("Launch\n& Support").background_color("E2EFDA").text_color("375623"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("✓ Complete").bold().text_color("2E7D32"),
            TableCell::new("✓ Complete").bold().text_color("2E7D32"),
            TableCell::new("In Progress").text_color("ED7D31"),
            TableCell::new("Planned").text_color("7F7F7F"),
            TableCell::new("Planned").text_color("7F7F7F"),
        ]))
        .position(300000, 2000000)
        .build();
    
    slides.push(
        SlideContent::new("Project Roadmap 2024-2025")
            .table(timeline_table)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 19: Dashboard Summary (NEW)
    // =========================================================================
    println!("🔷 Slide 19: Dashboard with KPIs");
    
    // KPI boxes
    let kpi1 = Shape::new(ShapeType::RoundedRectangle, 300000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Revenue\n\n$2.14M\n+15% YoY");
    let kpi2 = Shape::new(ShapeType::RoundedRectangle, 2500000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Customers\n\n12,450\n+22% YoY");
    let kpi3 = Shape::new(ShapeType::RoundedRectangle, 4700000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("NPS Score\n\n72\n+8 pts");
    let kpi4 = Shape::new(ShapeType::RoundedRectangle, 6900000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("5B9BD5"))
        .with_text("Retention\n\n94%\n+3% YoY");
    
    // Status indicators
    let status1 = Shape::new(ShapeType::Ellipse, 1800000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    let status2 = Shape::new(ShapeType::Ellipse, 4000000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    let status3 = Shape::new(ShapeType::Ellipse, 6200000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("FFC000"));
    let status4 = Shape::new(ShapeType::Ellipse, 8400000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    
    slides.push(
        SlideContent::new("Executive Dashboard - Q1 2024")
            .add_shape(kpi1)
            .add_shape(kpi2)
            .add_shape(kpi3)
            .add_shape(kpi4)
            .add_shape(status1)
            .add_shape(status2)
            .add_shape(status3)
            .add_shape(status4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 20: Summary Slide (NEW)
    // =========================================================================
    println!("📝 Slide 20: Summary with Speaker Notes");
    
    slides.push(
        SlideContent::new("Summary & Next Steps")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Completed: Research, Design, Initial Development")
            .add_bullet("In Progress: Sprint 3 Development")
            .add_bullet("Next: QA Testing Phase (Q4 2024)")
            .add_bullet("Launch Target: Q1 2025")
            .add_bullet("Key Risks: Resource constraints, Timeline pressure")
            .content_size(24)
            .notes("Speaker Notes:\n\n1. Emphasize the progress made\n2. Highlight key achievements\n3. Address any concerns about timeline\n4. Open for Q&A")
    );

    // =========================================================================
    // SLIDE 21: Bullet Styles (NEW v0.2.1)
    // =========================================================================
    println!("🔢 Slide 21: Bullet Styles (NEW)");
    
    // Numbered list
    slides.push(
        SlideContent::new("Bullet Styles - Numbered List")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .with_bullet_style(BulletStyle::Number)
            .add_bullet("First numbered item")
            .add_bullet("Second numbered item")
            .add_bullet("Third numbered item")
            .add_bullet("Fourth numbered item")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 22: Lettered Lists (NEW v0.2.1)
    // =========================================================================
    println!("🔤 Slide 22: Lettered Lists (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Lettered Lists")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_lettered("Option A - First choice")
            .add_lettered("Option B - Second choice")
            .add_lettered("Option C - Third choice")
            .add_lettered("Option D - Fourth choice")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 23: Roman Numerals (NEW v0.2.1)
    // =========================================================================
    println!("🏛️ Slide 23: Roman Numerals (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Roman Numerals")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .with_bullet_style(BulletStyle::RomanUpper)
            .add_bullet("Chapter I - Introduction")
            .add_bullet("Chapter II - Background")
            .add_bullet("Chapter III - Methodology")
            .add_bullet("Chapter IV - Results")
            .add_bullet("Chapter V - Conclusion")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 24: Custom Bullets (NEW v0.2.1)
    // =========================================================================
    println!("⭐ Slide 24: Custom Bullets (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Custom Characters")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_styled_bullet("Star bullet point", BulletStyle::Custom('★'))
            .add_styled_bullet("Arrow bullet point", BulletStyle::Custom('→'))
            .add_styled_bullet("Check bullet point", BulletStyle::Custom('✓'))
            .add_styled_bullet("Diamond bullet point", BulletStyle::Custom('◆'))
            .add_styled_bullet("Heart bullet point", BulletStyle::Custom('♥'))
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 25: Sub-bullets / Hierarchy (NEW v0.2.1)
    // =========================================================================
    println!("📊 Slide 25: Sub-bullets Hierarchy (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Hierarchical Lists")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Main Topic 1")
            .add_sub_bullet("Supporting detail A")
            .add_sub_bullet("Supporting detail B")
            .add_bullet("Main Topic 2")
            .add_sub_bullet("Supporting detail C")
            .add_sub_bullet("Supporting detail D")
            .add_bullet("Main Topic 3")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 26: Text Enhancements (NEW v0.2.1)
    // =========================================================================
    println!("✏️ Slide 26: Text Enhancements (NEW)");
    
    // Use BulletPoint with formatting
    let strikethrough_bullet = BulletPoint::new("Strikethrough: This text is crossed out").strikethrough();
    let highlight_bullet = BulletPoint::new("Highlight: Yellow background for emphasis").highlight("FFFF00");
    let subscript_bullet = BulletPoint::new("Subscript: H₂O - for chemical formulas").subscript();
    let superscript_bullet = BulletPoint::new("Superscript: x² - for math expressions").superscript();
    let bold_colored = BulletPoint::new("Combined: Bold + Red color").bold().color("FF0000");
    
    let mut text_enhancements_slide = SlideContent::new("Text Enhancements - New Formatting")
        .layout(SlideLayout::TitleAndContent)
        .title_color("1F497D")
        .title_bold(true)
        .content_size(24);
    text_enhancements_slide.bullets.push(strikethrough_bullet);
    text_enhancements_slide.bullets.push(highlight_bullet);
    text_enhancements_slide.bullets.push(subscript_bullet);
    text_enhancements_slide.bullets.push(superscript_bullet);
    text_enhancements_slide.bullets.push(bold_colored);
    
    slides.push(text_enhancements_slide);

    // =========================================================================
    // SLIDE 27: Font Size Presets (NEW v0.2.1)
    // =========================================================================
    println!("🔤 Slide 27: Font Size Presets (NEW)");
    
    // Demonstrate different font sizes per bullet
    let large_bullet = BulletPoint::new(&format!("LARGE: {}pt - Extra large text", font_sizes::LARGE)).font_size(font_sizes::LARGE);
    let heading_bullet = BulletPoint::new(&format!("HEADING: {}pt - Section headers", font_sizes::HEADING)).font_size(font_sizes::HEADING);
    let body_bullet = BulletPoint::new(&format!("BODY: {}pt - Regular content", font_sizes::BODY)).font_size(font_sizes::BODY);
    let small_bullet = BulletPoint::new(&format!("SMALL: {}pt - Smaller text", font_sizes::SMALL)).font_size(font_sizes::SMALL);
    let caption_bullet = BulletPoint::new(&format!("CAPTION: {}pt - Captions and notes", font_sizes::CAPTION)).font_size(font_sizes::CAPTION);
    
    let mut font_size_slide = SlideContent::new("Font Size Presets - Each line different size")
        .layout(SlideLayout::TitleAndContent)
        .title_color("1F497D")
        .title_bold(true)
        .title_size(font_sizes::TITLE);
    font_size_slide.bullets.push(large_bullet);
    font_size_slide.bullets.push(heading_bullet);
    font_size_slide.bullets.push(body_bullet);
    font_size_slide.bullets.push(small_bullet);
    font_size_slide.bullets.push(caption_bullet);
    
    slides.push(font_size_slide);

    // =========================================================================
    // SLIDE 28: Theme Colors (NEW v0.2.1)
    // =========================================================================
    println!("🎨 Slide 28: Theme Colors (NEW)");
    
    // Create shapes with theme colors
    let corporate_shape = Shape::new(ShapeType::Rectangle, 500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::CORPORATE.primary))
        .with_text("Corporate");
    
    let modern_shape = Shape::new(ShapeType::Rectangle, 2500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::MODERN.primary))
        .with_text("Modern");
    
    let vibrant_shape = Shape::new(ShapeType::Rectangle, 4500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::VIBRANT.primary))
        .with_text("Vibrant");
    
    let dark_shape = Shape::new(ShapeType::Rectangle, 6500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::DARK.primary))
        .with_text("Dark");
    
    let nature_shape = Shape::new(ShapeType::Rectangle, 500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::NATURE.primary))
        .with_text("Nature");
    
    let tech_shape = Shape::new(ShapeType::Rectangle, 2500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::TECH.primary))
        .with_text("Tech");
    
    let carbon_shape = Shape::new(ShapeType::Rectangle, 4500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::CARBON.primary))
        .with_text("Carbon");
    
    slides.push(
        SlideContent::new("Theme Color Palettes")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_shape(corporate_shape)
            .add_shape(modern_shape)
            .add_shape(vibrant_shape)
            .add_shape(dark_shape)
            .add_shape(nature_shape)
            .add_shape(tech_shape)
            .add_shape(carbon_shape)
    );

    // =========================================================================
    // SLIDE 29: Material & Carbon Design Colors (NEW v0.2.1)
    // =========================================================================
    println!("🌈 Slide 29: Material & Carbon Colors (NEW)");
    
    // Material Design colors
    let material_red = Shape::new(ShapeType::Rectangle, 500000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_RED))
        .with_text("M-Red");
    
    let material_blue = Shape::new(ShapeType::Rectangle, 1900000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_BLUE))
        .with_text("M-Blue");
    
    let material_green = Shape::new(ShapeType::Rectangle, 3300000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_GREEN))
        .with_text("M-Green");
    
    let material_orange = Shape::new(ShapeType::Rectangle, 4700000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_ORANGE))
        .with_text("M-Orange");
    
    let material_purple = Shape::new(ShapeType::Rectangle, 6100000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_PURPLE))
        .with_text("M-Purple");
    
    // Carbon Design colors
    let carbon_blue = Shape::new(ShapeType::Rectangle, 500000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_BLUE_60))
        .with_text("C-Blue");
    
    let carbon_green = Shape::new(ShapeType::Rectangle, 1900000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_GREEN_50))
        .with_text("C-Green");
    
    let carbon_red = Shape::new(ShapeType::Rectangle, 3300000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_RED_60))
        .with_text("C-Red");
    
    let carbon_purple = Shape::new(ShapeType::Rectangle, 4700000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_PURPLE_60))
        .with_text("C-Purple");
    
    let carbon_gray = Shape::new(ShapeType::Rectangle, 6100000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_GRAY_100))
        .with_text("C-Gray");
    
    slides.push(
        SlideContent::new("Material & Carbon Design Colors")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_shape(material_red)
            .add_shape(material_blue)
            .add_shape(material_green)
            .add_shape(material_orange)
            .add_shape(material_purple)
            .add_shape(carbon_blue)
            .add_shape(carbon_green)
            .add_shape(carbon_red)
            .add_shape(carbon_purple)
            .add_shape(carbon_gray)
    );

    // =========================================================================
    // SLIDE 30: Image from Base64 (NEW v0.2.1)
    // =========================================================================
    println!("🖼️ Slide 30: Image from Base64 (NEW)");
    
    // 1x1 red PNG pixel in base64
    let _red_pixel_base64 = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8DwHwAFBQIAX8jx0gAAAABJRU5ErkJggg==";
    
    // Create image from base64 (demonstrating the API)
    let _base64_image = ImageBuilder::from_base64(_red_pixel_base64, 914400, 914400, "PNG")
        .position(4000000, 2500000)
        .build();
    
    slides.push(
        SlideContent::new("Image Loading - New Methods")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Image::new(path) - Load from file path")
            .add_bullet("Image::from_base64(data) - Load from base64 string")
            .add_bullet("Image::from_bytes(data) - Load from raw bytes")
            .add_bullet("ImageBuilder for fluent API configuration")
            .add_bullet("Built-in base64 decoder (no external deps)")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 31: Feature Summary (NEW v0.2.1)
    // =========================================================================
    println!("📋 Slide 31: v0.2.1 Feature Summary (NEW)");
    
    slides.push(
        SlideContent::new("New Features in v0.2.1")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_numbered("BulletStyle: Number, Letter, Roman, Custom")
            .add_numbered("TextFormat: Strikethrough, Highlight")
            .add_numbered("TextFormat: Subscript, Superscript")
            .add_numbered("Font size presets in prelude")
            .add_numbered("Image::from_base64 and from_bytes")
            .add_numbered("Theme color palettes (7 themes)")
            .add_numbered("Material & Carbon Design colors")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 32: Slide Show Settings - Comparison Table (REAL: embedded in presProps.xml)
    // =========================================================================
    println!("🎬 Slide 34: Slide Show Settings (Visual)");

    let show_speaker = SlideShowSettings::new().pen_color(PenColor::red());
    let show_kiosk = SlideShowSettings::kiosk();
    let _show_range = SlideShowSettings::new()
        .show_type(ShowType::Browsed)
        .slide_range(SlideRange::Range { start: 1, end: 10 })
        .without_animation(true);
    let _speaker_xml = show_speaker.to_xml();
    let _kiosk_xml = show_kiosk.to_xml();

    let show_table = TableBuilder::new(vec![2000000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Setting").bold().background_color("1F4E79").text_color("FFFFFF"),
            TableCell::new("Speaker").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Kiosk").bold().background_color("ED7D31").text_color("FFFFFF"),
            TableCell::new("Browsed").bold().background_color("70AD47").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Loop").bold().background_color("D6E4F0"),
            TableCell::new("No"), TableCell::new("Yes").bold().text_color("2E7D32"),
            TableCell::new("No"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Narration").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("No").text_color("C62828"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Animation").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("Yes"),
            TableCell::new("No").text_color("C62828"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Timings").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("Auto"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Slide Range").bold().background_color("D6E4F0"),
            TableCell::new("All"), TableCell::new("All"),
            TableCell::new("1-10"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Pen Color").bold().background_color("D6E4F0"),
            TableCell::new("Red").text_color("FF0000"),
            TableCell::new("Red").text_color("FF0000"),
            TableCell::new("Red").text_color("FF0000"),
        ]))
        .position(300000, 1600000)
        .build();

    // Mode icons
    let icon_speaker = Shape::new(ShapeType::RoundedRectangle, 300000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Speaker: Full control");
    let icon_kiosk = Shape::new(ShapeType::RoundedRectangle, 3100000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Kiosk: Auto-loop");
    let icon_browsed = Shape::new(ShapeType::RoundedRectangle, 5900000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Browsed: Scrollbar");

    slides.push(
        SlideContent::new("Slide Show Settings - Mode Comparison")
            .table(show_table)
            .add_shape(icon_speaker)
            .add_shape(icon_kiosk)
            .add_shape(icon_browsed)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 35: Print Settings - Visual Handout Grid
    // =========================================================================
    println!("🖨️  Slide 35: Print Settings & Handouts (Visual)");

    let print = PrintSettings::new()
        .print_what(PrintWhat::Handouts)
        .color_mode(PrintColorMode::Grayscale)
        .handout_layout(GenHandoutLayout::SlidesPerPage6)
        .frame_slides(true)
        .header("Q1 2025 Strategy Review")
        .footer("Confidential - Internal Use Only")
        .print_date(true)
        .print_page_numbers(true);
    let _prnpr_xml = print.to_prnpr_xml();
    let _handout_xml = print.to_handout_master_xml();

    // Visual: 6-slide handout grid (2 cols x 3 rows)
    let hdr = Shape::new(ShapeType::Rectangle, 300000, 1500000, 4200000, 300000)
        .with_fill(ShapeFill::new("E7E6E6"))
        .with_text("Q1 2025 Strategy Review");
    // Row 1
    let s1 = Shape::new(ShapeType::Rectangle, 400000, 2000000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 1");
    let s2 = Shape::new(ShapeType::Rectangle, 2500000, 2000000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 2");
    // Row 2
    let s3 = Shape::new(ShapeType::Rectangle, 400000, 3200000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 3");
    let s4 = Shape::new(ShapeType::Rectangle, 2500000, 3200000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 4");
    // Row 3
    let s5 = Shape::new(ShapeType::Rectangle, 400000, 4400000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 5");
    let s6 = Shape::new(ShapeType::Rectangle, 2500000, 4400000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 6");
    let ftr = Shape::new(ShapeType::Rectangle, 300000, 5600000, 4200000, 300000)
        .with_fill(ShapeFill::new("E7E6E6"))
        .with_text("Confidential - Internal Use Only");

    // Settings summary table on the right
    let print_table = TableBuilder::new(vec![1800000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Print Settings").bold().background_color("1F4E79").text_color("FFFFFF"),
            TableCell::new("").background_color("1F4E79"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Print What").bold().background_color("D6E4F0"),
            TableCell::new("Handouts"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Color Mode").bold().background_color("D6E4F0"),
            TableCell::new("Grayscale"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Layout").bold().background_color("D6E4F0"),
            TableCell::new("6 slides/page"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Frame Slides").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Date").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Page Numbers").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .position(5000000, 1800000)
        .build();

    slides.push(
        SlideContent::new("Print Handout - 6 Slides Per Page")
            .table(print_table)
            .add_shape(hdr)
            .add_shape(s1).add_shape(s2)
            .add_shape(s3).add_shape(s4)
            .add_shape(s5).add_shape(s6)
            .add_shape(ftr)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 36: Advanced Table Merging - Actual Merged Table
    // =========================================================================
    println!("📊 Slide 36: Advanced Table Merging (Visual)");

    // Use TableMergeMap to compute states, then build a visual table
    let mut merge_map = TableMergeMap::new(5, 4);
    merge_map.merge_cells(0, 0, 1, 4).unwrap(); // Title row spans all 4 cols
    merge_map.merge_cells(1, 0, 2, 1).unwrap(); // "Products" spans 2 rows
    merge_map.merge_cells(3, 0, 2, 1).unwrap(); // "Services" spans 2 rows

    // Show merge state labels
    let state_00 = merge_map.cell_state(0, 0); // Anchor gridSpan=4
    let state_01 = merge_map.cell_state(0, 1); // HMerge
    let state_10 = merge_map.cell_state(1, 0); // Anchor rowSpan=2
    let state_20 = merge_map.cell_state(2, 0); // VMerge
    println!("   ├── (0,0): {}", state_00.to_xml_attrs().trim());
    println!("   ├── (0,1): {}", state_01.to_xml_attrs().trim());
    println!("   ├── (1,0): {}", state_10.to_xml_attrs().trim());
    println!("   └── (2,0): {}", state_20.to_xml_attrs().trim());

    // Build the table with REAL merge attributes (gridSpan, rowSpan, hMerge, vMerge)
    let merge_table = TableBuilder::new(vec![1500000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2025 Revenue Report").bold().background_color("1F4E79").text_color("FFFFFF").grid_span(4),
            TableCell::new("").background_color("1F4E79").h_merge(),
            TableCell::new("").background_color("1F4E79").h_merge(),
            TableCell::new("").background_color("1F4E79").h_merge(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Products").bold().background_color("BDD7EE").text_color("1F497D").row_span(2),
            TableCell::new("Hardware").background_color("E2EFDA"),
            TableCell::new("$450,000").text_color("2E7D32").align_right(),
            TableCell::new("+12%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("").background_color("BDD7EE").v_merge(),
            TableCell::new("Software").background_color("E2EFDA"),
            TableCell::new("$680,000").text_color("2E7D32").align_right(),
            TableCell::new("+25%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Services").bold().background_color("FCE4D6").text_color("C65911").row_span(2),
            TableCell::new("Consulting").background_color("FFF2CC"),
            TableCell::new("$320,000").text_color("2E7D32").align_right(),
            TableCell::new("+8%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("").background_color("FCE4D6").v_merge(),
            TableCell::new("Support").background_color("FFF2CC"),
            TableCell::new("$190,000").text_color("2E7D32").align_right(),
            TableCell::new("+5%").bold().text_color("2E7D32").align_right(),
        ]))
        .position(300000, 1600000)
        .build();

    // Legend shapes
    let legend_anchor = Shape::new(ShapeType::RoundedRectangle, 300000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Anchor (gridSpan/rowSpan)");
    let legend_hmerge = Shape::new(ShapeType::RoundedRectangle, 2500000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("hMerge (col covered)");
    let legend_vmerge = Shape::new(ShapeType::RoundedRectangle, 4700000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("vMerge (row covered)");
    let legend_normal = Shape::new(ShapeType::RoundedRectangle, 6900000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"))
        .with_text("Normal (no merge)");

    slides.push(
        SlideContent::new("Advanced Table Merging - Merged Cells")
            .table(merge_table)
            .add_shape(legend_anchor)
            .add_shape(legend_hmerge)
            .add_shape(legend_vmerge)
            .add_shape(legend_normal)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // Build PresentationSettings with all advanced features
    // =========================================================================
    println!("\n⚙️  Building Presentation Settings...");

    // Slide show settings (embedded in presProps.xml as <p:showPr>)
    let show_settings = SlideShowSettings::new()
        .show_type(ShowType::Speaker)
        .pen_color(PenColor::red())
        .use_timings(true);
    println!("   ├── Slide Show: Speaker mode, red pen, timings enabled");
    println!("   │   └── XML: {} bytes", show_settings.to_xml().len());

    // Print settings (embedded in presProps.xml as <p:prnPr>)
    let print_settings = PrintSettings::new()
        .print_what(PrintWhat::Handouts)
        .color_mode(PrintColorMode::Grayscale)
        .handout_layout(GenHandoutLayout::SlidesPerPage6)
        .frame_slides(true)
        .header("Q1 2025 Strategy Review")
        .footer("Confidential - Internal Use Only")
        .print_date(true)
        .print_page_numbers(true);
    println!("   └── Print: Handouts, 6/page, grayscale, framed");
    println!("       └── XML: {} bytes", print_settings.to_prnpr_xml().len());

    let pres_settings = PresentationSettings::new()
        .slide_show(show_settings)
        .print(print_settings);
    println!("   All settings configured → presProps.xml");

    // =========================================================================
    // Generate PPTX with real integrated features
    // =========================================================================
    println!("\n📦 Generating PPTX with integrated features...");
    let pptx_data = create_pptx_with_settings(
        "PPTX-RS Element Showcase",
        slides.clone(),
        Some(pres_settings),
    )?;
    fs::write("comprehensive_demo.pptx", &pptx_data)?;
    println!("   ✓ Created comprehensive_demo.pptx ({} slides, {} bytes)", 
             slides.len(), pptx_data.len());

    // =========================================================================
    // Package Analysis - Demonstrate Reading
    // =========================================================================
    println!("\n📖 Package Analysis (Read Capability):");
    
    let package = Package::open("comprehensive_demo.pptx")?;
    let paths = package.part_paths();
    
    let slide_count = paths.iter()
        .filter(|p| p.starts_with("ppt/slides/slide") && p.ends_with(".xml"))
        .count();
    
    println!("   ├── Total parts: {}", package.part_count());
    println!("   ├── Slides: {}", slide_count);
    println!("   └── Package opened and analyzed successfully");

    // =========================================================================
    // NEW: Parts API Demonstration
    // =========================================================================
    println!("\n🧩 Parts API Demonstration:");
    
    // SlideLayoutPart - 11 layout types
    println!("   ┌── SlideLayoutPart (11 layout types):");
    let layouts = [
        LayoutType::Title,
        LayoutType::TitleAndContent,
        LayoutType::SectionHeader,
        LayoutType::TwoContent,
        LayoutType::Comparison,
        LayoutType::TitleOnly,
        LayoutType::Blank,
        LayoutType::ContentWithCaption,
        LayoutType::PictureWithCaption,
        LayoutType::TitleAndVerticalText,
        LayoutType::VerticalTitleAndText,
    ];
    for (i, layout_type) in layouts.iter().enumerate() {
        let layout = SlideLayoutPart::new(i + 1, *layout_type);
        if i < 3 {
            println!("   │   ├── {}: {} ({})", i + 1, layout_type.name(), layout.path());
        }
    }
    println!("   │   └── ... and {} more layout types", layouts.len() - 3);
    
    // SlideMasterPart
    println!("   ├── SlideMasterPart:");
    let mut master = SlideMasterPart::new(1);
    master.set_name("Custom Master");
    master.add_layout_rel_id("rId2");
    master.add_layout_rel_id("rId3");
    println!("   │   ├── Name: {}", master.name());
    println!("   │   ├── Path: {}", master.path());
    println!("   │   └── Layouts: {} linked", master.layout_rel_ids().len());
    
    // ThemePart - Colors and Fonts
    println!("   ├── ThemePart (colors & fonts):");
    let mut theme = ThemePart::new(1);
    theme.set_name("Corporate Theme");
    theme.set_major_font("Arial");
    theme.set_minor_font("Calibri");
    theme.set_color("accent1", "FF5733");
    theme.set_color("accent2", "33FF57");
    let theme_xml = theme.to_xml()?;
    println!("   │   ├── Name: {}", theme.name());
    println!("   │   ├── Major Font: Arial");
    println!("   │   ├── Minor Font: Calibri");
    println!("   │   └── XML size: {} bytes", theme_xml.len());
    
    // NotesSlidePart - Speaker notes
    println!("   ├── NotesSlidePart (speaker notes):");
    let notes = NotesSlidePart::with_text(1, "Remember to:\n- Introduce yourself\n- Explain the agenda\n- Ask for questions");
    let notes_xml = notes.to_xml()?;
    println!("   │   ├── Path: {}", notes.path());
    println!("   │   ├── Text: \"{}...\"", &notes.notes_text()[..20.min(notes.notes_text().len())]);
    println!("   │   └── XML size: {} bytes", notes_xml.len());
    
    // AppPropertiesPart - Application metadata
    println!("   ├── AppPropertiesPart (metadata):");
    let mut app_props = AppPropertiesPart::new();
    app_props.set_company("Acme Corporation");
    app_props.set_slides(slides.len() as u32);
    let app_xml = app_props.to_xml()?;
    println!("   │   ├── Company: Acme Corporation");
    println!("   │   ├── Slides: {}", slides.len());
    println!("   │   └── XML size: {} bytes", app_xml.len());
    
    // MediaPart - Video/Audio formats
    println!("   ├── MediaPart (10 media formats):");
    println!("   │   ├── Video: mp4, webm, avi, wmv, mov");
    println!("   │   ├── Audio: mp3, wav, wma, m4a, ogg");
    let sample_media = MediaPart::new(1, MediaFormat::Mp4, vec![0; 100]);
    println!("   │   └── Sample: {} ({})", sample_media.path(), sample_media.format().mime_type());
    
    // TablePart - Table with formatting
    println!("   ├── TablePart (cell formatting):");
    let table_part = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Header 1").bold().background("4472C4"),
            TableCellPart::new("Header 2").bold().background("4472C4"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Data 1").color("333333"),
            TableCellPart::new("Data 2").italic(),
        ]))
        .position(EMU_PER_INCH, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 6, EMU_PER_INCH * 2);
    let table_xml = table_part.to_slide_xml(10);
    println!("   │   ├── Rows: {}", table_part.rows.len());
    println!("   │   ├── Features: bold, italic, colors, backgrounds");
    println!("   │   └── XML size: {} bytes", table_xml.len());
    
    // ContentTypesPart
    println!("   └── ContentTypesPart:");
    let mut content_types = ContentTypesPart::new();
    content_types.add_presentation();
    content_types.add_slide(1);
    content_types.add_slide_layout(1);
    content_types.add_slide_master(1);
    content_types.add_theme(1);
    content_types.add_core_properties();
    content_types.add_app_properties();
    let ct_xml = content_types.to_xml()?;
    println!("       ├── Path: {}", content_types.path());
    println!("       └── XML size: {} bytes", ct_xml.len());

    // =========================================================================
    // NEW: Elements API Demonstration
    // =========================================================================
    println!("\n🎨 Elements API Demonstration:");
    
    // Color types
    println!("   ┌── Color Types:");
    let rgb = RgbColor::new(255, 87, 51);
    let rgb_hex = RgbColor::from_hex("#4472C4").unwrap();
    let scheme = SchemeColor::Accent1;
    let color = Color::rgb(100, 149, 237);
    println!("   │   ├── RgbColor::new(255, 87, 51) → {}", rgb.to_hex());
    println!("   │   ├── RgbColor::from_hex(\"#4472C4\") → {}", rgb_hex.to_hex());
    println!("   │   ├── SchemeColor::Accent1 → {}", scheme.as_str());
    println!("   │   └── Color::rgb(100, 149, 237) → XML: {}", color.to_xml().chars().take(30).collect::<String>());
    
    // Position and Size
    println!("   ├── Position & Size (EMU units):");
    let pos = Position::from_inches(1.0, 2.0);
    let size = Size::from_inches(4.0, 3.0);
    println!("   │   ├── Position::from_inches(1.0, 2.0) → x={}, y={}", pos.x, pos.y);
    println!("   │   ├── Size::from_inches(4.0, 3.0) → w={}, h={}", size.width, size.height);
    println!("   │   └── EMU_PER_INCH = {}", EMU_PER_INCH);
    
    // Transform
    println!("   └── Transform (position + size + rotation):");
    let transform = Transform::from_inches(1.0, 1.5, 3.0, 2.0).with_rotation(45.0);
    let transform_xml = transform.to_xml();
    println!("       ├── Transform::from_inches(1.0, 1.5, 3.0, 2.0)");
    println!("       ├── .with_rotation(45.0)");
    println!("       └── XML: {}...", &transform_xml[..50.min(transform_xml.len())]);

    // =========================================================================
    // NEW: Advanced Features Demonstration
    // =========================================================================
    println!("\n🚀 Advanced Features Demonstration:");

    // -------------------------------------------------------------------------
    // Complex Table Examples
    // -------------------------------------------------------------------------
    println!("   ┌── Complex Table Examples:");
    
    // Example 1: Financial Report Table
    println!("   │   ┌── Financial Report Table (5x4 with formatting):");
    let financial_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Q1 2024 Financial Summary")
                .col_span(4)
                .bold()
                .center()
                .background("1F4E79")
                .color("FFFFFF")
                .font_size(14)
                .font("Arial Black"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Category").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Revenue").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Expenses").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Profit").bold().center().background("2E75B6").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Product Sales").align(HorizontalAlign::Left),
            TableCellPart::new("$1,250,000").align(HorizontalAlign::Right).color("2E7D32"),
            TableCellPart::new("$450,000").align(HorizontalAlign::Right).color("C62828"),
            TableCellPart::new("$800,000").align(HorizontalAlign::Right).bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Services").align(HorizontalAlign::Left),
            TableCellPart::new("$890,000").align(HorizontalAlign::Right).color("2E7D32"),
            TableCellPart::new("$320,000").align(HorizontalAlign::Right).color("C62828"),
            TableCellPart::new("$570,000").align(HorizontalAlign::Right).bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Total").bold().background("E7E6E6"),
            TableCellPart::new("$2,140,000").bold().align(HorizontalAlign::Right).background("E7E6E6"),
            TableCellPart::new("$770,000").bold().align(HorizontalAlign::Right).background("E7E6E6"),
            TableCellPart::new("$1,370,000").bold().align(HorizontalAlign::Right).background("C6EFCE").color("006100"),
        ]))
        .position(EMU_PER_INCH / 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 8, EMU_PER_INCH * 3);
    let fin_xml = financial_table.to_slide_xml(100);
    println!("   │   │   ├── Merged header spanning 4 columns");
    println!("   │   │   ├── Color-coded values (green=positive, red=negative)");
    println!("   │   │   ├── Custom fonts and sizes");
    println!("   │   │   └── XML: {} bytes", fin_xml.len());

    // Example 2: Comparison Matrix
    println!("   │   ├── Comparison Matrix (features vs products):");
    let matrix_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Feature").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Basic").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Pro").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Enterprise").bold().center().background("4472C4").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Storage").align(HorizontalAlign::Left),
            TableCellPart::new("5 GB").center(),
            TableCellPart::new("50 GB").center(),
            TableCellPart::new("Unlimited").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Users").align(HorizontalAlign::Left),
            TableCellPart::new("1").center(),
            TableCellPart::new("10").center(),
            TableCellPart::new("Unlimited").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Support").align(HorizontalAlign::Left),
            TableCellPart::new("Email").center(),
            TableCellPart::new("24/7 Chat").center(),
            TableCellPart::new("Dedicated").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Price/mo").bold().background("F2F2F2"),
            TableCellPart::new("$9").center().bold().background("F2F2F2"),
            TableCellPart::new("$29").center().bold().background("F2F2F2"),
            TableCellPart::new("$99").center().bold().background("F2F2F2"),
        ]));
    println!("   │   │   └── 5x4 matrix with alternating styles");

    // Example 3: Schedule/Timeline Table
    println!("   │   └── Schedule Table (with row spans):");
    let schedule_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Time").bold().center().background("70AD47").color("FFFFFF"),
            TableCellPart::new("Monday").bold().center().background("70AD47").color("FFFFFF"),
            TableCellPart::new("Tuesday").bold().center().background("70AD47").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("9:00 AM").center().background("E2EFDA"),
            TableCellPart::new("Team Standup").center().row_span(2).valign(VerticalAlign::Middle).background("BDD7EE"),
            TableCellPart::new("Code Review").center(),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("10:00 AM").center().background("E2EFDA"),
            TableCellPart::merged(),
            TableCellPart::new("Sprint Planning").center().background("FCE4D6"),
        ]));
    println!("   │       └── Row spans for multi-hour events");

    // -------------------------------------------------------------------------
    // Complex Animation Sequences
    // -------------------------------------------------------------------------
    println!("   ├── Complex Animation Sequences:");
    
    // Sequence 1: Title entrance with staggered content
    println!("   │   ┌── Staggered Entrance Sequence:");
    let title_anim = Animation::new(2, AnimationEffect::Fade)
        .trigger(AnimationTrigger::OnClick)
        .duration(500);
    let content1 = Animation::new(3, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(200);
    let content2 = Animation::new(4, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(100);
    let content3 = Animation::new(5, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(100);
    let staggered = SlideAnimations::new()
        .add(title_anim)
        .add(content1)
        .add(content2)
        .add(content3)
        .transition(SlideTransition::new(TransitionEffect::Push).direction(AnimationDirection::Left).duration(750));
    let staggered_xml = staggered.to_timing_xml()?;
    println!("   │   │   ├── Title: Fade on click");
    println!("   │   │   ├── Content 1-3: FlyIn with 100ms stagger");
    println!("   │   │   ├── Transition: Push from left (750ms)");
    println!("   │   │   └── XML: {} bytes", staggered_xml.len());

    // Sequence 2: Emphasis and exit
    println!("   │   ├── Emphasis + Exit Sequence:");
    let emphasis = Animation::new(6, AnimationEffect::Pulse)
        .trigger(AnimationTrigger::OnClick)
        .duration(1000)
        .repeat(3);
    let exit = Animation::new(6, AnimationEffect::FadeOut)
        .trigger(AnimationTrigger::AfterPrevious)
        .duration(500);
    let emphasis_seq = SlideAnimations::new()
        .add(emphasis)
        .add(exit);
    println!("   │   │   ├── Pulse 3x on click, then fade out");
    println!("   │   │   └── Same shape, sequential effects");

    // Sequence 3: Motion path
    println!("   │   └── Motion Path Animation:");
    let motion = Animation::new(7, AnimationEffect::Lines)
        .trigger(AnimationTrigger::OnClick)
        .duration(2000);
    println!("   │       └── Custom path: Lines, Arcs, Turns, Loops");

    // -------------------------------------------------------------------------
    // SmartArt Combinations
    // -------------------------------------------------------------------------
    println!("   ├── SmartArt Layout Examples:");
    
    // Process flow
    println!("   │   ┌── Process Flow (5 steps):");
    let process = SmartArtPart::new(1, SmartArtLayout::BasicProcess)
        .add_items(vec!["Research", "Design", "Develop", "Test", "Deploy"])
        .position(EMU_PER_INCH / 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 8, EMU_PER_INCH * 2);
    println!("   │   │   └── {} nodes in horizontal flow", process.nodes().len());

    // Organization chart
    println!("   │   ├── Organization Chart:");
    let org = SmartArtPart::new(2, SmartArtLayout::OrgChart)
        .add_items(vec!["CEO", "CTO", "CFO", "VP Engineering", "VP Sales"]);
    println!("   │   │   └── Hierarchical structure with {} positions", org.nodes().len());

    // Cycle diagram
    println!("   │   ├── Cycle Diagram:");
    let cycle = SmartArtPart::new(3, SmartArtLayout::BasicCycle)
        .add_items(vec!["Plan", "Do", "Check", "Act"]);
    println!("   │   │   └── PDCA cycle with {} phases", cycle.nodes().len());

    // Venn diagram
    println!("   │   ├── Venn Diagram:");
    let venn = SmartArtPart::new(4, SmartArtLayout::BasicVenn)
        .add_items(vec!["Skills", "Passion", "Market Need"]);
    println!("   │   │   └── 3-circle Venn for Ikigai concept");

    // Pyramid
    println!("   │   └── Pyramid:");
    let pyramid = SmartArtPart::new(5, SmartArtLayout::BasicPyramid)
        .add_items(vec!["Self-Actualization", "Esteem", "Love/Belonging", "Safety", "Physiological"]);
    println!("   │       └── Maslow's hierarchy with {} levels", pyramid.nodes().len());

    // -------------------------------------------------------------------------
    // 3D Model Configurations
    // -------------------------------------------------------------------------
    println!("   ├── 3D Model Configurations:");
    
    // Product showcase
    println!("   │   ┌── Product Showcase:");
    let product_3d = Model3DPart::new(1, Model3DFormat::Glb, vec![0; 100])
        .camera(CameraPreset::IsometricTopUp)
        .rotation(0.0, 45.0, 0.0)
        .zoom(1.2)
        .position(EMU_PER_INCH * 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 4, EMU_PER_INCH * 4);
    println!("   │   │   ├── Camera: Isometric top-up view");
    println!("   │   │   ├── Rotation: 45° Y-axis for best angle");
    println!("   │   │   └── Zoom: 1.2x for detail");

    // Architectural model
    println!("   │   ├── Architectural Model:");
    let arch_3d = Model3DPart::new(2, Model3DFormat::Gltf, vec![0; 100])
        .camera(CameraPreset::Front)
        .rotation(15.0, -30.0, 0.0)
        .ambient_light("FFFFCC");
    println!("   │   │   ├── Camera: Front view with tilt");
    println!("   │   │   └── Ambient: Warm lighting (FFFFCC)");

    // Technical diagram
    println!("   │   └── Technical Diagram:");
    let tech_3d = Model3DPart::new(3, Model3DFormat::Obj, vec![0; 100])
        .camera(CameraPreset::IsometricOffAxis1Top)
        .rotation(0.0, 0.0, 0.0);
    println!("   │       └── Camera: Off-axis isometric for exploded view");

    // -------------------------------------------------------------------------
    // Theme + Master + Layout Combination
    // -------------------------------------------------------------------------
    println!("   ├── Theme + Master + Layout Integration:");
    
    // Corporate theme
    let mut corp_theme = ThemePart::new(1);
    corp_theme.set_name("Corporate Blue");
    corp_theme.set_major_font("Segoe UI");
    corp_theme.set_minor_font("Segoe UI Light");
    corp_theme.set_color("dk1", "000000");
    corp_theme.set_color("lt1", "FFFFFF");
    corp_theme.set_color("dk2", "1F497D");
    corp_theme.set_color("lt2", "EEECE1");
    corp_theme.set_color("accent1", "4472C4");
    corp_theme.set_color("accent2", "ED7D31");
    corp_theme.set_color("accent3", "A5A5A5");
    corp_theme.set_color("accent4", "FFC000");
    corp_theme.set_color("accent5", "5B9BD5");
    corp_theme.set_color("accent6", "70AD47");
    let theme_xml = corp_theme.to_xml()?;
    println!("   │   ├── Theme: Corporate Blue");
    println!("   │   │   ├── Fonts: Segoe UI / Segoe UI Light");
    println!("   │   │   ├── 12 color slots defined");
    println!("   │   │   └── XML: {} bytes", theme_xml.len());

    // Master with multiple layouts
    let mut corp_master = SlideMasterPart::new(1);
    corp_master.set_name("Corporate Master");
    corp_master.add_layout_rel_id("rId2"); // Title
    corp_master.add_layout_rel_id("rId3"); // Title + Content
    corp_master.add_layout_rel_id("rId4"); // Section Header
    corp_master.add_layout_rel_id("rId5"); // Two Content
    corp_master.add_layout_rel_id("rId6"); // Comparison
    corp_master.add_layout_rel_id("rId7"); // Title Only
    corp_master.add_layout_rel_id("rId8"); // Blank
    println!("   │   └── Master: {} with {} layouts linked", corp_master.name(), corp_master.layout_rel_ids().len());

    // -------------------------------------------------------------------------
    // VBA + Custom XML Integration
    // -------------------------------------------------------------------------
    println!("   ├── VBA + Custom XML Integration:");
    
    // VBA with multiple modules
    let vba_project = VbaProjectPart::new()
        .add_module(VbaModule::new("AutoRun", r#"
Sub Auto_Open()
    MsgBox "Welcome to the presentation!"
End Sub

Sub NavigateToSlide(slideNum As Integer)
    SlideShowWindows(1).View.GotoSlide slideNum
End Sub
"#))
        .add_module(VbaModule::new("DataHelpers", r#"
Function GetCustomData(key As String) As String
    ' Read from Custom XML part
    GetCustomData = ActivePresentation.CustomXMLParts(1).SelectSingleNode("//" & key).Text
End Function
"#))
        .add_module(VbaModule::class("SlideController", r#"
Private currentSlide As Integer

Public Sub NextSlide()
    currentSlide = currentSlide + 1
    NavigateToSlide currentSlide
End Sub
"#));
    println!("   │   ├── VBA Project:");
    println!("   │   │   ├── AutoRun: Auto_Open, NavigateToSlide");
    println!("   │   │   ├── DataHelpers: GetCustomData (reads Custom XML)");
    println!("   │   │   └── SlideController: Class for navigation");

    // Custom XML with structured data
    let app_config = CustomXmlPart::new(1, "presentationConfig")
        .namespace("http://company.com/pptx/config")
        .property("version", "2.1.0")
        .property("author", "Demo User")
        .property("department", "Engineering")
        .property("confidentiality", "Internal")
        .property("lastModified", "2024-01-15T10:30:00Z");
    let config_xml = app_config.to_xml()?;
    println!("   │   └── Custom XML:");
    println!("   │       ├── Namespace: http://company.com/pptx/config");
    println!("   │       ├── Properties: version, author, department, etc.");
    println!("   │       └── XML: {} bytes", config_xml.len());

    // -------------------------------------------------------------------------
    // Embedded Fonts with Variants
    // -------------------------------------------------------------------------
    println!("   ├── Embedded Font Collection:");
    let mut font_collection = EmbeddedFontCollection::new();
    font_collection.add("Corporate Sans", vec![0; 1000]);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::Bold);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::Italic);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::BoldItalic);
    font_collection.add("Code Mono", vec![0; 800]);
    let fonts_xml = font_collection.to_xml();
    println!("   │   ├── Corporate Sans: Regular, Bold, Italic, BoldItalic");
    println!("   │   ├── Code Mono: Regular");
    println!("   │   ├── Total: {} font files", font_collection.len());
    println!("   │   └── XML: {} bytes", fonts_xml.len());

    // -------------------------------------------------------------------------
    // Handout with Full Configuration
    // -------------------------------------------------------------------------
    println!("   └── Handout Master Configuration:");
    let handout = HandoutMasterPart::new()
        .layout(HandoutLayout::SlidesPerPage6)
        .header("Q1 2024 Strategy Review")
        .footer("Confidential - Internal Use Only");
    let handout_xml = handout.to_xml()?;
    println!("       ├── Layout: 6 slides per page");
    println!("       ├── Header: Q1 2024 Strategy Review");
    println!("       ├── Footer: Confidential - Internal Use Only");
    println!("       └── XML: {} bytes", handout_xml.len());

    // =========================================================================
    // Summary
    // =========================================================================
    println!("\n╔══════════════════════════════════════════════════════════════╗");
    println!("║                    Element Coverage Summary                   ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  LAYOUTS (6 types):                                          ║");
    println!("║    ✓ CenteredTitle    ✓ TitleOnly      ✓ TitleAndContent     ║");
    println!("║    ✓ TitleAndBigContent  ✓ TwoColumn   ✓ Blank               ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  TEXT FORMATTING:                                            ║");
    println!("║    ✓ Bold            ✓ Italic         ✓ Underline            ║");
    println!("║    ✓ Font Size       ✓ Font Color     ✓ Title/Content styles ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  TABLES:                                                     ║");
    println!("║    ✓ Multiple rows/columns  ✓ Bold cells  ✓ Background colors║");
    println!("║    ✓ Header styling         ✓ Position control               ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  CHARTS:                                                     ║");
    println!("║    ✓ Bar Chart       ✓ Line Chart     ✓ Pie Chart            ║");
    println!("║    ✓ Multiple series ✓ Categories                            ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  SHAPES:                                                     ║");
    println!("║    ✓ Rectangle       ✓ Ellipse        ✓ RoundedRectangle     ║");
    println!("║    ✓ Triangle        ✓ Diamond        ✓ Color fills          ║");
    println!("║    ✓ Gradient fills  ✓ Transparency   ✓ Text in shapes       ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  CONNECTORS (NEW):                                           ║");
    println!("║    ✓ Straight        ✓ Elbow          ✓ Curved               ║");
    println!("║    ✓ Arrow types     ✓ Dash styles    ✓ Line colors/widths   ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  IMAGES:                                                     ║");
    println!("║    ✓ Image placeholders  ✓ Position   ✓ Dimensions           ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  PACKAGE:                                                    ║");
    println!("║    ✓ Create PPTX     ✓ Read PPTX      ✓ Analyze contents     ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  PARTS API (NEW):                                            ║");
    println!("║    ✓ SlideLayoutPart (11 types)  ✓ SlideMasterPart           ║");
    println!("║    ✓ ThemePart (colors/fonts)    ✓ NotesSlidePart            ║");
    println!("║    ✓ AppPropertiesPart           ✓ MediaPart (10 formats)    ║");
    println!("║    ✓ TablePart (cell formatting) ✓ ContentTypesPart          ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  ELEMENTS API:                                               ║");
    println!("║    ✓ RgbColor        ✓ SchemeColor    ✓ Color enum           ║");
    println!("║    ✓ Position        ✓ Size           ✓ Transform            ║");
    println!("║    ✓ EMU conversions (inches, cm, mm, pt)                    ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  ADVANCED FEATURES (NEW):                                    ║");
    println!("║    ✓ Animation (50+ effects)  ✓ Transitions (27 types)       ║");
    println!("║    ✓ SmartArt (25 layouts)    ✓ 3D Models (GLB/GLTF/OBJ)     ║");
    println!("║    ✓ VBA Macros (.pptm)       ✓ Embedded Fonts               ║");
    println!("║    ✓ Custom XML               ✓ Handout Master               ║");
    println!("║    ✓ Table borders/alignment  ✓ Merged cells                 ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  Output: comprehensive_demo.pptx ({} slides, {} KB)         ║", 
             slides.len(), pptx_data.len() / 1024);
    println!("╚══════════════════════════════════════════════════════════════╝");

    Ok(())
}

pub fn table(self, table: Table) -> Self

Examples found in repository

examples/table_generation.rs (line 73)

fn create_simple_table_example() -> Result<(), Box<dyn std::error::Error>> {
    let table = Table::from_data(
        vec![
            vec!["Name", "Age"],
            vec!["Alice", "30"],
            vec!["Bob", "25"],
        ],
        vec![2000000, 2000000],
        500000,
        1500000,
    );

    let slides = vec![
        SlideContent::new("Simple 2x2 Table")
            .add_bullet("Table with basic structure")
            .add_bullet("Headers and data rows"),
        SlideContent::new("Table Data")
            .table(table),
    ];

    let pptx_data = create_pptx_with_content("Simple Table", slides)?;
    fs::write("examples/output/simple_table.pptx", pptx_data)?;
    Ok(())
}

fn create_styled_table_example() -> Result<(), Box<dyn std::error::Error>> {
    let header_cells = vec![
        TableCell::new("Name").bold().background_color("003366"),
        TableCell::new("Age").bold().background_color("003366"),
        TableCell::new("City").bold().background_color("003366"),
    ];
    let header_row = TableRow::new(header_cells);

    let data_rows = vec![
        TableRow::new(vec![
            TableCell::new("Alice"),
            TableCell::new("30"),
            TableCell::new("NYC"),
        ]),
        TableRow::new(vec![
            TableCell::new("Bob"),
            TableCell::new("28"),
            TableCell::new("LA"),
        ]),
        TableRow::new(vec![
            TableCell::new("Carol"),
            TableCell::new("35"),
            TableCell::new("Chicago"),
        ]),
    ];

    let table = Table::new(
        vec![vec![header_row], data_rows].concat(),
        vec![1500000, 1500000, 1500000],
        500000,
        1500000,
    );

    let slides = vec![
        SlideContent::new("Styled Table")
            .title_bold(true)
            .title_color("003366")
            .add_bullet("Table with formatting"),
        SlideContent::new("People Data")
            .table(table),
    ];

    let pptx_data = create_pptx_with_content("Styled Table", slides)?;
    fs::write("examples/output/styled_table.pptx", pptx_data)?;
    Ok(())
}

fn create_data_table_example() -> Result<(), Box<dyn std::error::Error>> {
    let header_cells = vec![
        TableCell::new("Product").bold().background_color("1F497D"),
        TableCell::new("Revenue").bold().background_color("1F497D"),
        TableCell::new("Growth").bold().background_color("1F497D"),
    ];
    let header_row = TableRow::new(header_cells);

    let data_rows = vec![
        TableRow::new(vec![
            TableCell::new("Product A"),
            TableCell::new("$100K"),
            TableCell::new("+15%"),
        ]),
        TableRow::new(vec![
            TableCell::new("Product B"),
            TableCell::new("$150K"),
            TableCell::new("+22%"),
        ]),
        TableRow::new(vec![
            TableCell::new("Product C"),
            TableCell::new("$200K"),
            TableCell::new("+18%"),
        ]),
    ];

    let table = Table::new(
        vec![vec![header_row], data_rows].concat(),
        vec![2000000, 2000000, 1500000],
        457200,
        1400000,
    );

    let slides = vec![
        SlideContent::new("Sales Data Table")
            .title_bold(true)
            .title_size(48)
            .add_bullet("Quarterly sales figures"),
        SlideContent::new("Q1 2025 Sales")
            .table(table),
        SlideContent::new("Summary")
            .content_bold(true)
            .add_bullet("Total Revenue: $450K")
            .add_bullet("Average Growth: +18.3%")
            .add_bullet("Best Performer: Product C"),
    ];

    let pptx_data = create_pptx_with_content("Sales Data", slides)?;
    fs::write("examples/output/data_table.pptx", pptx_data)?;
    Ok(())
}

fn create_multiple_tables_example() -> Result<(), Box<dyn std::error::Error>> {
    // Table 1: Employees
    let emp_header = TableRow::new(vec![
        TableCell::new("ID").bold().background_color("4F81BD"),
        TableCell::new("Name").bold().background_color("4F81BD"),
        TableCell::new("Department").bold().background_color("4F81BD"),
    ]);
    let emp_rows = vec![
        TableRow::new(vec![
            TableCell::new("001"),
            TableCell::new("Alice"),
            TableCell::new("Engineering"),
        ]),
        TableRow::new(vec![
            TableCell::new("002"),
            TableCell::new("Bob"),
            TableCell::new("Sales"),
        ]),
        TableRow::new(vec![
            TableCell::new("003"),
            TableCell::new("Carol"),
            TableCell::new("Marketing"),
        ]),
    ];
    let emp_table = Table::new(
        vec![vec![emp_header], emp_rows].concat(),
        vec![1000000, 2000000, 2000000],
        500000,
        1500000,
    );

    // Table 2: Projects
    let proj_header = TableRow::new(vec![
        TableCell::new("Project").bold().background_color("003366"),
        TableCell::new("Status").bold().background_color("003366"),
        TableCell::new("Owner").bold().background_color("003366"),
    ]);
    let proj_rows = vec![
        TableRow::new(vec![
            TableCell::new("Project A"),
            TableCell::new("In Progress"),
            TableCell::new("Alice"),
        ]),
        TableRow::new(vec![
            TableCell::new("Project B"),
            TableCell::new("Completed"),
            TableCell::new("Bob"),
        ]),
        TableRow::new(vec![
            TableCell::new("Project C"),
            TableCell::new("Planning"),
            TableCell::new("Carol"),
        ]),
    ];
    let proj_table = Table::new(
        vec![vec![proj_header], proj_rows].concat(),
        vec![2000000, 2000000, 1500000],
        500000,
        1500000,
    );

    let slides = vec![
        SlideContent::new("Multiple Tables")
            .title_bold(true)
            .add_bullet("Slide with multiple tables"),
        SlideContent::new("Table 1: Employees")
            .table(emp_table),
        SlideContent::new("Table 2: Projects")
            .table(proj_table),
        SlideContent::new("Summary")
            .add_bullet("Total Employees: 3")
            .add_bullet("Active Projects: 3")
            .add_bullet("Completion Rate: 33%"),
    ];

    let pptx_data = create_pptx_with_content("Multiple Tables", slides)?;
    fs::write("examples/output/multiple_tables.pptx", pptx_data)?;
    Ok(())
}

examples/table_demo.rs (line 11)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        // Slide 1: Title
        SlideContent::new("Table Examples")
            .add_bullet("Demonstrating table rendering in PPTX"),

        // Slide 2: Simple 2x3 table
        SlideContent::new("Employee Data")
            .table(create_employee_table()),

        // Slide 3: Styled table with colors
        SlideContent::new("Sales Summary")
            .table(create_sales_table()),

        // Slide 4: Data table
        SlideContent::new("Quarterly Results")
            .table(create_quarterly_table()),
    ];

    let pptx_data = create_pptx_with_content("Table Demo", slides)?;
    std::fs::write("table_demo.pptx", pptx_data)?;
    println!("✓ Created table_demo.pptx with 4 slides containing tables");

    Ok(())
}

examples/table_text_formatting.rs (line 11)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let slides = vec![
        // Slide 1: Title
        SlideContent::new("Table Text Formatting Examples")
            .add_bullet("Demonstrating rich text content in table cells"),

        // Slide 2: Text formatting examples
        SlideContent::new("Text Formatting in Tables")
            .table(create_text_formatting_table()),

        // Slide 3: Color examples
        SlideContent::new("Text and Background Colors")
            .table(create_color_table()),

        // Slide 4: Font examples
        SlideContent::new("Font Size and Family")
            .table(create_font_table()),

        // Slide 5: Combined formatting
        SlideContent::new("Combined Formatting")
            .table(create_combined_table()),
    ];

    let pptx_data = create_pptx_with_content("Table Text Formatting", slides)?;
    std::fs::write("examples/output/table_text_formatting.pptx", pptx_data)?;
    println!("✓ Created table_text_formatting.pptx with rich text formatting examples");

    Ok(())
}

examples/comprehensive_demo.rs (line 195)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    println!("╔══════════════════════════════════════════════════════════════╗");
    println!("║       PPTX-RS Element Showcase - Complete Coverage           ║");
    println!("╚══════════════════════════════════════════════════════════════╝\n");

    let mut slides = Vec::new();

    // =========================================================================
    // SLIDE 1: CenteredTitle Layout + Title Formatting
    // =========================================================================
    println!("📐 Slide 1: CenteredTitle Layout + Title Formatting");
    slides.push(
        SlideContent::new("PPTX-RS Element Showcase")
            .layout(SlideLayout::CenteredTitle)
            .title_size(54)
            .title_bold(true)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 2: TitleOnly Layout
    // =========================================================================
    println!("📐 Slide 2: TitleOnly Layout");
    slides.push(
        SlideContent::new("Section: Slide Layouts")
            .layout(SlideLayout::TitleOnly)
            .title_size(48)
            .title_bold(true)
            .title_color("C0504D")
    );

    // =========================================================================
    // SLIDE 3: TitleAndContent Layout + All Text Formatting
    // =========================================================================
    println!("📝 Slide 3: TitleAndContent + Text Formatting");
    slides.push(
        SlideContent::new("Text Formatting Options")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .title_italic(true)
            .title_underline(true)
            .title_size(44)
            .add_bullet("Normal text (default)")
            .add_bullet("Bold content text")
            .add_bullet("Italic content text")
            .add_bullet("Underlined content")
            .add_bullet("Custom font size (28pt)")
            .add_bullet("Custom color (#4F81BD)")
            .content_bold(true)
            .content_italic(true)
            .content_underline(true)
            .content_size(28)
            .content_color("4F81BD")
    );

    // =========================================================================
    // SLIDE 4: TitleAndBigContent Layout
    // =========================================================================
    println!("📐 Slide 4: TitleAndBigContent Layout");
    slides.push(
        SlideContent::new("Key Highlights")
            .layout(SlideLayout::TitleAndBigContent)
            .title_color("1F497D")
            .add_bullet("Large content area for emphasis")
            .add_bullet("Perfect for key messages")
            .add_bullet("Smaller title, bigger content")
            .content_bold(true)
            .content_size(32)
    );

    // =========================================================================
    // SLIDE 5: TwoColumn Layout
    // =========================================================================
    println!("📐 Slide 5: TwoColumn Layout");
    slides.push(
        SlideContent::new("Two Column Comparison")
            .layout(SlideLayout::TwoColumn)
            .title_color("1F497D")
            .add_bullet("Left Column Item 1")
            .add_bullet("Left Column Item 2")
            .add_bullet("Left Column Item 3")
            .add_bullet("Right Column Item 1")
            .add_bullet("Right Column Item 2")
            .add_bullet("Right Column Item 3")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 6: Blank Layout
    // =========================================================================
    println!("📐 Slide 6: Blank Layout");
    slides.push(
        SlideContent::new("")
            .layout(SlideLayout::Blank)
    );

    // =========================================================================
    // SLIDE 7: Table with All Cell Styling Options
    // =========================================================================
    println!("📊 Slide 7: Table with Cell Styling");
    let styled_table = TableBuilder::new(vec![1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Header 1").bold().background_color("1F497D"),
            TableCell::new("Header 2").bold().background_color("4F81BD"),
            TableCell::new("Header 3").bold().background_color("8064A2"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Bold Cell").bold(),
            TableCell::new("Normal Cell"),
            TableCell::new("Colored").background_color("9BBB59"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Red BG").background_color("C0504D"),
            TableCell::new("Green BG").background_color("9BBB59"),
            TableCell::new("Blue BG").background_color("4F81BD"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Row 3 Col 1"),
            TableCell::new("Row 3 Col 2"),
            TableCell::new("Row 3 Col 3").bold().background_color("F79646"),
        ]))
        .position(500000, 1800000)
        .build();
    
    slides.push(
        SlideContent::new("Table with Cell Styling")
            .table(styled_table)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 8: Charts (Bar, Line, Pie)
    // =========================================================================
    println!("📈 Slide 8: Chart Types");
    
    // Create chart data structures (for demonstration)
    let _bar_chart = ChartBuilder::new("Sales by Region", ChartType::Bar)
        .categories(vec!["North", "South", "East", "West"])
        .add_series(ChartSeries::new("2023", vec![100.0, 80.0, 120.0, 90.0]))
        .add_series(ChartSeries::new("2024", vec![120.0, 95.0, 140.0, 110.0]))
        .build();
    
    let _line_chart = ChartBuilder::new("Monthly Trend", ChartType::Line)
        .categories(vec!["Jan", "Feb", "Mar", "Apr", "May", "Jun"])
        .add_series(ChartSeries::new("Revenue", vec![10.0, 12.0, 15.0, 14.0, 18.0, 22.0]))
        .build();
    
    let _pie_chart = ChartBuilder::new("Market Share", ChartType::Pie)
        .categories(vec!["Product A", "Product B", "Product C", "Others"])
        .add_series(ChartSeries::new("Share", vec![40.0, 30.0, 20.0, 10.0]))
        .build();
    
    slides.push(
        SlideContent::new("Chart Types: Bar, Line, Pie")
            .with_chart()
            .title_color("1F497D")
            .add_bullet("Bar Chart: Compare categories")
            .add_bullet("Line Chart: Show trends over time")
            .add_bullet("Pie Chart: Show proportions")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 9: Shapes with Different Fills
    // =========================================================================
    println!("🔷 Slide 9: Shapes with Fills");
    
    let rect = Shape::new(ShapeType::Rectangle, 500000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("4F81BD"))
        .with_text("Rectangle");
    
    let ellipse = Shape::new(ShapeType::Ellipse, 3000000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("9BBB59"))
        .with_text("Ellipse");
    
    let rounded = Shape::new(ShapeType::RoundedRectangle, 5500000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("C0504D"))
        .with_text("Rounded");
    
    let triangle = Shape::new(ShapeType::Triangle, 1500000, 3000000, 1500000, 1200000)
        .with_fill(ShapeFill::new("8064A2"))
        .with_text("Triangle");
    
    let diamond = Shape::new(ShapeType::Diamond, 4000000, 3000000, 1500000, 1200000)
        .with_fill(ShapeFill::new("F79646"))
        .with_text("Diamond");
    
    slides.push(
        SlideContent::new("Shape Types with Color Fills")
            .add_shape(rect)
            .add_shape(ellipse)
            .add_shape(rounded)
            .add_shape(triangle)
            .add_shape(diamond)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 10: Gradient Fills (NEW)
    // =========================================================================
    println!("🌈 Slide 10: Gradient Fills");
    
    // Horizontal gradient
    let gradient_h = Shape::new(ShapeType::Rectangle, 500000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("1565C0", "42A5F5", GradientDirection::Horizontal))
        .with_text("Horizontal");
    
    // Vertical gradient
    let gradient_v = Shape::new(ShapeType::Rectangle, 3200000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("2E7D32", "81C784", GradientDirection::Vertical))
        .with_text("Vertical");
    
    // Diagonal gradient
    let gradient_d = Shape::new(ShapeType::RoundedRectangle, 5900000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("C62828", "EF9A9A", GradientDirection::DiagonalDown))
        .with_text("Diagonal");
    
    // Three-color gradient
    let gradient_3 = Shape::new(ShapeType::Ellipse, 1800000, 3200000, 2500000, 1200000)
        .with_gradient(GradientFill::three_color("FF6F00", "FFC107", "FFEB3B", GradientDirection::Horizontal))
        .with_text("3-Color");
    
    // Custom angle gradient
    let gradient_angle = Shape::new(ShapeType::RoundedRectangle, 4800000, 3200000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("7B1FA2", "E1BEE7", GradientDirection::Angle(135)))
        .with_text("135° Angle");
    
    slides.push(
        SlideContent::new("Gradient Fills - Multiple Directions")
            .add_shape(gradient_h)
            .add_shape(gradient_v)
            .add_shape(gradient_d)
            .add_shape(gradient_3)
            .add_shape(gradient_angle)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 11: Transparency (NEW)
    // =========================================================================
    println!("👻 Slide 11: Transparency Effects");
    
    // Base shape (fully opaque)
    let base = Shape::new(ShapeType::Rectangle, 1000000, 1800000, 3000000, 2000000)
        .with_fill(ShapeFill::new("1565C0"))
        .with_text("Base (100%)");
    
    // 25% transparent overlay
    let trans_25 = Shape::new(ShapeType::Rectangle, 2000000, 2200000, 2500000, 1500000)
        .with_fill(ShapeFill::new("F44336").with_transparency(25))
        .with_line(ShapeLine::new("B71C1C", 25400))
        .with_text("25% Transparent");
    
    // 50% transparent overlay
    let trans_50 = Shape::new(ShapeType::Ellipse, 4500000, 1800000, 2500000, 2000000)
        .with_fill(ShapeFill::new("4CAF50").with_transparency(50))
        .with_line(ShapeLine::new("1B5E20", 25400))
        .with_text("50% Transparent");
    
    // 75% transparent overlay
    let trans_75 = Shape::new(ShapeType::RoundedRectangle, 5500000, 2500000, 2500000, 1500000)
        .with_fill(ShapeFill::new("FF9800").with_transparency(75))
        .with_line(ShapeLine::new("E65100", 25400))
        .with_text("75% Transparent");
    
    slides.push(
        SlideContent::new("Transparency Effects - Overlapping Shapes")
            .add_shape(base)
            .add_shape(trans_25)
            .add_shape(trans_50)
            .add_shape(trans_75)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 12: Styled Connectors (NEW)
    // =========================================================================
    println!("🔗 Slide 12: Styled Connectors");
    
    // Create shapes to connect
    let box1 = Shape::new(ShapeType::RoundedRectangle, 500000, 1800000, 1800000, 800000)
        .with_id(100)
        .with_fill(ShapeFill::new("1565C0"))
        .with_text("Start");
    
    let box2 = Shape::new(ShapeType::RoundedRectangle, 3500000, 1800000, 1800000, 800000)
        .with_id(101)
        .with_fill(ShapeFill::new("2E7D32"))
        .with_text("Process");
    
    let box3 = Shape::new(ShapeType::RoundedRectangle, 6500000, 1800000, 1800000, 800000)
        .with_id(102)
        .with_fill(ShapeFill::new("C62828"))
        .with_text("End");
    
    // Straight connector with arrow
    let conn1 = Connector::straight(2300000, 2200000, 3500000, 2200000)
        .with_line(ConnectorLine::new("1565C0", 25400))
        .with_end_arrow(ArrowType::Triangle)
        .with_arrow_size(ArrowSize::Large);
    
    // Elbow connector with stealth arrow
    let conn2 = Connector::elbow(5300000, 2200000, 6500000, 2200000)
        .with_line(ConnectorLine::new("2E7D32", 38100).with_dash(LineDash::Dash))
        .with_end_arrow(ArrowType::Stealth)
        .with_arrow_size(ArrowSize::Medium);
    
    // Curved connector examples
    let box4 = Shape::new(ShapeType::Ellipse, 1000000, 3200000, 1500000, 800000)
        .with_id(103)
        .with_fill(ShapeFill::new("7B1FA2"))
        .with_text("A");
    
    let box5 = Shape::new(ShapeType::Ellipse, 4000000, 3200000, 1500000, 800000)
        .with_id(104)
        .with_fill(ShapeFill::new("00838F"))
        .with_text("B");
    
    let box6 = Shape::new(ShapeType::Ellipse, 7000000, 3200000, 1500000, 800000)
        .with_id(105)
        .with_fill(ShapeFill::new("EF6C00"))
        .with_text("C");
    
    // Curved connector with diamond arrow
    let conn3 = Connector::curved(2500000, 3600000, 4000000, 3600000)
        .with_line(ConnectorLine::new("7B1FA2", 19050).with_dash(LineDash::DashDot))
        .with_arrows(ArrowType::Oval, ArrowType::Diamond);
    
    // Dotted connector
    let conn4 = Connector::straight(5500000, 3600000, 7000000, 3600000)
        .with_line(ConnectorLine::new("00838F", 12700).with_dash(LineDash::Dot))
        .with_end_arrow(ArrowType::Open);
    
    slides.push(
        SlideContent::new("Styled Connectors - Types, Arrows, Dashes")
            .add_shape(box1)
            .add_shape(box2)
            .add_shape(box3)
            .add_shape(box4)
            .add_shape(box5)
            .add_shape(box6)
            .add_connector(conn1)
            .add_connector(conn2)
            .add_connector(conn3)
            .add_connector(conn4)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 13: Images
    // =========================================================================
    println!("🖼️  Slide 13: Image Placeholders");
    
    let img1 = Image::new("logo.png", 2500000, 1800000, "png")
        .position(500000, 1600000);
    let img2 = Image::new("photo.jpg", 2500000, 1800000, "jpg")
        .position(3500000, 1600000);
    let img3 = Image::new("diagram.png", 2000000, 1800000, "png")
        .position(6500000, 1600000);
    
    slides.push(
        SlideContent::new("Image Placeholders")
            .add_image(img1)
            .add_image(img2)
            .add_image(img3)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 11: Advanced Table with Borders & Alignment (NEW)
    // =========================================================================
    println!("📊 Slide 11: Advanced Table (borders, alignment, merged cells)");
    
    // Build advanced table using generator's TableBuilder with alignment
    let advanced_table = TableBuilder::new(vec![2000000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2024 Financial Report").bold().background_color("1F4E79").text_color("FFFFFF").align_center().font_size(14),
            TableCell::new("").background_color("1F4E79"),
            TableCell::new("").background_color("1F4E79"),
            TableCell::new("").background_color("1F4E79"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Category").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Revenue").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Expenses").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Profit").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Product Sales").text_color("000000").align_left(),
            TableCell::new("$1,250,000").text_color("2E7D32").align_right(),
            TableCell::new("$450,000").text_color("C62828").align_right(),
            TableCell::new("$800,000").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Services").text_color("000000").align_left(),
            TableCell::new("$890,000").text_color("2E7D32").align_right(),
            TableCell::new("$320,000").text_color("C62828").align_right(),
            TableCell::new("$570,000").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Total").bold().background_color("E7E6E6").text_color("000000").align_left(),
            TableCell::new("$2,140,000").bold().background_color("E7E6E6").text_color("000000").align_right(),
            TableCell::new("$770,000").bold().background_color("E7E6E6").text_color("000000").align_right(),
            TableCell::new("$1,370,000").bold().background_color("C6EFCE").text_color("006100").align_right(),
        ]))
        .position(300000, 1600000)
        .build();
    
    slides.push(
        SlideContent::new("Financial Report - Advanced Table")
            .table(advanced_table)
            .title_color("1F4E79")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 12: Comparison Matrix Table (NEW)
    // =========================================================================
    println!("📊 Slide 12: Comparison Matrix Table");
    
    let comparison_table = TableBuilder::new(vec![2000000, 1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Feature").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Basic").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Pro").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Enterprise").bold().background_color("4472C4").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Storage").text_color("000000"),
            TableCell::new("5 GB").text_color("000000"),
            TableCell::new("50 GB").text_color("000000"),
            TableCell::new("Unlimited").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Users").text_color("000000"),
            TableCell::new("1").text_color("000000"),
            TableCell::new("10").text_color("000000"),
            TableCell::new("Unlimited").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Support").text_color("000000"),
            TableCell::new("Email").text_color("000000"),
            TableCell::new("24/7 Chat").text_color("000000"),
            TableCell::new("Dedicated").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("API Access").text_color("000000"),
            TableCell::new("No").text_color("C62828"),
            TableCell::new("Yes").text_color("2E7D32"),
            TableCell::new("Yes + Priority").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Price/month").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$9").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$29").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$99").bold().background_color("F2F2F2").text_color("000000"),
        ]))
        .position(500000, 1600000)
        .build();
    
    slides.push(
        SlideContent::new("Pricing Comparison Matrix")
            .table(comparison_table)
            .title_color("4472C4")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 13: Process Flow with Shapes (NEW - SmartArt-like)
    // =========================================================================
    println!("🔷 Slide 13: Process Flow (SmartArt-style)");
    
    // Create process flow using shapes
    let step1 = Shape::new(ShapeType::RoundedRectangle, 300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("1. Research");
    let arrow1 = Shape::new(ShapeType::RightArrow, 1800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step2 = Shape::new(ShapeType::RoundedRectangle, 2300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("2. Design");
    let arrow2 = Shape::new(ShapeType::RightArrow, 3800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step3 = Shape::new(ShapeType::RoundedRectangle, 4300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("3. Develop");
    let arrow3 = Shape::new(ShapeType::RightArrow, 5800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step4 = Shape::new(ShapeType::RoundedRectangle, 6300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("5B9BD5"))
        .with_text("4. Deploy");
    
    slides.push(
        SlideContent::new("Development Process Flow")
            .add_shape(step1)
            .add_shape(arrow1)
            .add_shape(step2)
            .add_shape(arrow2)
            .add_shape(step3)
            .add_shape(arrow3)
            .add_shape(step4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 14: Organization Chart with Shapes (NEW)
    // =========================================================================
    println!("🔷 Slide 14: Organization Chart");
    
    // CEO at top
    let ceo = Shape::new(ShapeType::RoundedRectangle, 3500000, 1400000, 2000000, 600000)
        .with_fill(ShapeFill::new("1F4E79"))
        .with_text("CEO");
    
    // Vertical line from CEO
    let line1 = Shape::new(ShapeType::Rectangle, 4450000, 2000000, 100000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // Horizontal connector
    let hline = Shape::new(ShapeType::Rectangle, 1950000, 2400000, 5100000, 50000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // CTO, CFO, COO
    let cto = Shape::new(ShapeType::RoundedRectangle, 1000000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("CTO");
    let cfo = Shape::new(ShapeType::RoundedRectangle, 3600000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("CFO");
    let coo = Shape::new(ShapeType::RoundedRectangle, 6200000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("COO");
    
    // Vertical lines to departments
    let vline1 = Shape::new(ShapeType::Rectangle, 1850000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let vline2 = Shape::new(ShapeType::Rectangle, 4450000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let vline3 = Shape::new(ShapeType::Rectangle, 7050000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // Teams under CTO
    let eng = Shape::new(ShapeType::Rectangle, 500000, 3300000, 1200000, 400000)
        .with_fill(ShapeFill::new("BDD7EE"))
        .with_text("Engineering");
    let product = Shape::new(ShapeType::Rectangle, 1800000, 3300000, 1200000, 400000)
        .with_fill(ShapeFill::new("BDD7EE"))
        .with_text("Product");
    
    slides.push(
        SlideContent::new("Organization Structure")
            .add_shape(ceo)
            .add_shape(line1)
            .add_shape(hline)
            .add_shape(cto)
            .add_shape(cfo)
            .add_shape(coo)
            .add_shape(vline1)
            .add_shape(vline2)
            .add_shape(vline3)
            .add_shape(eng)
            .add_shape(product)
            .title_color("1F4E79")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 15: PDCA Cycle Diagram (NEW)
    // =========================================================================
    println!("🔷 Slide 15: PDCA Cycle Diagram");
    
    // Four quadrants for PDCA
    let plan = Shape::new(ShapeType::RoundedRectangle, 1500000, 1600000, 2500000, 1500000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("PLAN\n\nDefine goals\nand strategy");
    let do_box = Shape::new(ShapeType::RoundedRectangle, 4500000, 1600000, 2500000, 1500000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("DO\n\nImplement\nthe plan");
    let check = Shape::new(ShapeType::RoundedRectangle, 4500000, 3300000, 2500000, 1500000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("CHECK\n\nMeasure\nresults");
    let act = Shape::new(ShapeType::RoundedRectangle, 1500000, 3300000, 2500000, 1500000)
        .with_fill(ShapeFill::new("FFC000"))
        .with_text("ACT\n\nAdjust and\nimprove");
    
    // Arrows between quadrants
    let arr1 = Shape::new(ShapeType::RightArrow, 4100000, 2100000, 300000, 300000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr2 = Shape::new(ShapeType::DownArrow, 5600000, 3200000, 300000, 200000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr3 = Shape::new(ShapeType::LeftArrow, 4100000, 3800000, 300000, 300000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr4 = Shape::new(ShapeType::UpArrow, 2600000, 3200000, 300000, 200000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    slides.push(
        SlideContent::new("PDCA Continuous Improvement Cycle")
            .add_shape(plan)
            .add_shape(do_box)
            .add_shape(check)
            .add_shape(act)
            .add_shape(arr1)
            .add_shape(arr2)
            .add_shape(arr3)
            .add_shape(arr4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 16: Pyramid Diagram (Maslow's Hierarchy) (NEW)
    // =========================================================================
    println!("🔷 Slide 16: Pyramid Diagram");
    
    // Build pyramid from bottom to top
    let level5 = Shape::new(ShapeType::Trapezoid, 500000, 4000000, 8000000, 600000)
        .with_fill(ShapeFill::new("C00000"))
        .with_text("Physiological Needs - Food, Water, Shelter");
    let level4 = Shape::new(ShapeType::Trapezoid, 1000000, 3400000, 7000000, 600000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Safety Needs - Security, Stability");
    let level3 = Shape::new(ShapeType::Trapezoid, 1500000, 2800000, 6000000, 600000)
        .with_fill(ShapeFill::new("FFC000"))
        .with_text("Love & Belonging - Relationships");
    let level2 = Shape::new(ShapeType::Trapezoid, 2000000, 2200000, 5000000, 600000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Esteem - Achievement, Respect");
    let level1 = Shape::new(ShapeType::Triangle, 2500000, 1500000, 4000000, 700000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Self-Actualization");
    
    slides.push(
        SlideContent::new("Maslow's Hierarchy of Needs")
            .add_shape(level5)
            .add_shape(level4)
            .add_shape(level3)
            .add_shape(level2)
            .add_shape(level1)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 17: Venn Diagram (NEW)
    // =========================================================================
    println!("🔷 Slide 17: Venn Diagram");
    
    // Three overlapping circles
    let circle1 = Shape::new(ShapeType::Ellipse, 1500000, 1800000, 3000000, 3000000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Skills");
    let circle2 = Shape::new(ShapeType::Ellipse, 3500000, 1800000, 3000000, 3000000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Passion");
    let circle3 = Shape::new(ShapeType::Ellipse, 2500000, 3200000, 3000000, 3000000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Market Need");
    
    // Center label
    let center = Shape::new(ShapeType::Ellipse, 3200000, 2800000, 1600000, 800000)
        .with_fill(ShapeFill::new("FFFFFF"))
        .with_text("IKIGAI");
    
    slides.push(
        SlideContent::new("Finding Your Ikigai - Venn Diagram")
            .add_shape(circle1)
            .add_shape(circle2)
            .add_shape(circle3)
            .add_shape(center)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 18: Timeline/Roadmap (NEW)
    // =========================================================================
    println!("📊 Slide 18: Project Timeline");
    
    let timeline_table = TableBuilder::new(vec![1500000, 1500000, 1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q2 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q3 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q4 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q1 2025").bold().background_color("4472C4").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Research\n& Planning").background_color("BDD7EE").text_color("1F497D"),
            TableCell::new("Design\nPhase").background_color("BDD7EE").text_color("1F497D"),
            TableCell::new("Development\nSprint 1-3").background_color("C6EFCE").text_color("006100"),
            TableCell::new("Testing\n& QA").background_color("FCE4D6").text_color("C65911"),
            TableCell::new("Launch\n& Support").background_color("E2EFDA").text_color("375623"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("✓ Complete").bold().text_color("2E7D32"),
            TableCell::new("✓ Complete").bold().text_color("2E7D32"),
            TableCell::new("In Progress").text_color("ED7D31"),
            TableCell::new("Planned").text_color("7F7F7F"),
            TableCell::new("Planned").text_color("7F7F7F"),
        ]))
        .position(300000, 2000000)
        .build();
    
    slides.push(
        SlideContent::new("Project Roadmap 2024-2025")
            .table(timeline_table)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 19: Dashboard Summary (NEW)
    // =========================================================================
    println!("🔷 Slide 19: Dashboard with KPIs");
    
    // KPI boxes
    let kpi1 = Shape::new(ShapeType::RoundedRectangle, 300000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Revenue\n\n$2.14M\n+15% YoY");
    let kpi2 = Shape::new(ShapeType::RoundedRectangle, 2500000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Customers\n\n12,450\n+22% YoY");
    let kpi3 = Shape::new(ShapeType::RoundedRectangle, 4700000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("NPS Score\n\n72\n+8 pts");
    let kpi4 = Shape::new(ShapeType::RoundedRectangle, 6900000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("5B9BD5"))
        .with_text("Retention\n\n94%\n+3% YoY");
    
    // Status indicators
    let status1 = Shape::new(ShapeType::Ellipse, 1800000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    let status2 = Shape::new(ShapeType::Ellipse, 4000000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    let status3 = Shape::new(ShapeType::Ellipse, 6200000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("FFC000"));
    let status4 = Shape::new(ShapeType::Ellipse, 8400000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    
    slides.push(
        SlideContent::new("Executive Dashboard - Q1 2024")
            .add_shape(kpi1)
            .add_shape(kpi2)
            .add_shape(kpi3)
            .add_shape(kpi4)
            .add_shape(status1)
            .add_shape(status2)
            .add_shape(status3)
            .add_shape(status4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 20: Summary Slide (NEW)
    // =========================================================================
    println!("📝 Slide 20: Summary with Speaker Notes");
    
    slides.push(
        SlideContent::new("Summary & Next Steps")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Completed: Research, Design, Initial Development")
            .add_bullet("In Progress: Sprint 3 Development")
            .add_bullet("Next: QA Testing Phase (Q4 2024)")
            .add_bullet("Launch Target: Q1 2025")
            .add_bullet("Key Risks: Resource constraints, Timeline pressure")
            .content_size(24)
            .notes("Speaker Notes:\n\n1. Emphasize the progress made\n2. Highlight key achievements\n3. Address any concerns about timeline\n4. Open for Q&A")
    );

    // =========================================================================
    // SLIDE 21: Bullet Styles (NEW v0.2.1)
    // =========================================================================
    println!("🔢 Slide 21: Bullet Styles (NEW)");
    
    // Numbered list
    slides.push(
        SlideContent::new("Bullet Styles - Numbered List")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .with_bullet_style(BulletStyle::Number)
            .add_bullet("First numbered item")
            .add_bullet("Second numbered item")
            .add_bullet("Third numbered item")
            .add_bullet("Fourth numbered item")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 22: Lettered Lists (NEW v0.2.1)
    // =========================================================================
    println!("🔤 Slide 22: Lettered Lists (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Lettered Lists")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_lettered("Option A - First choice")
            .add_lettered("Option B - Second choice")
            .add_lettered("Option C - Third choice")
            .add_lettered("Option D - Fourth choice")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 23: Roman Numerals (NEW v0.2.1)
    // =========================================================================
    println!("🏛️ Slide 23: Roman Numerals (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Roman Numerals")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .with_bullet_style(BulletStyle::RomanUpper)
            .add_bullet("Chapter I - Introduction")
            .add_bullet("Chapter II - Background")
            .add_bullet("Chapter III - Methodology")
            .add_bullet("Chapter IV - Results")
            .add_bullet("Chapter V - Conclusion")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 24: Custom Bullets (NEW v0.2.1)
    // =========================================================================
    println!("⭐ Slide 24: Custom Bullets (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Custom Characters")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_styled_bullet("Star bullet point", BulletStyle::Custom('★'))
            .add_styled_bullet("Arrow bullet point", BulletStyle::Custom('→'))
            .add_styled_bullet("Check bullet point", BulletStyle::Custom('✓'))
            .add_styled_bullet("Diamond bullet point", BulletStyle::Custom('◆'))
            .add_styled_bullet("Heart bullet point", BulletStyle::Custom('♥'))
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 25: Sub-bullets / Hierarchy (NEW v0.2.1)
    // =========================================================================
    println!("📊 Slide 25: Sub-bullets Hierarchy (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Hierarchical Lists")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Main Topic 1")
            .add_sub_bullet("Supporting detail A")
            .add_sub_bullet("Supporting detail B")
            .add_bullet("Main Topic 2")
            .add_sub_bullet("Supporting detail C")
            .add_sub_bullet("Supporting detail D")
            .add_bullet("Main Topic 3")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 26: Text Enhancements (NEW v0.2.1)
    // =========================================================================
    println!("✏️ Slide 26: Text Enhancements (NEW)");
    
    // Use BulletPoint with formatting
    let strikethrough_bullet = BulletPoint::new("Strikethrough: This text is crossed out").strikethrough();
    let highlight_bullet = BulletPoint::new("Highlight: Yellow background for emphasis").highlight("FFFF00");
    let subscript_bullet = BulletPoint::new("Subscript: H₂O - for chemical formulas").subscript();
    let superscript_bullet = BulletPoint::new("Superscript: x² - for math expressions").superscript();
    let bold_colored = BulletPoint::new("Combined: Bold + Red color").bold().color("FF0000");
    
    let mut text_enhancements_slide = SlideContent::new("Text Enhancements - New Formatting")
        .layout(SlideLayout::TitleAndContent)
        .title_color("1F497D")
        .title_bold(true)
        .content_size(24);
    text_enhancements_slide.bullets.push(strikethrough_bullet);
    text_enhancements_slide.bullets.push(highlight_bullet);
    text_enhancements_slide.bullets.push(subscript_bullet);
    text_enhancements_slide.bullets.push(superscript_bullet);
    text_enhancements_slide.bullets.push(bold_colored);
    
    slides.push(text_enhancements_slide);

    // =========================================================================
    // SLIDE 27: Font Size Presets (NEW v0.2.1)
    // =========================================================================
    println!("🔤 Slide 27: Font Size Presets (NEW)");
    
    // Demonstrate different font sizes per bullet
    let large_bullet = BulletPoint::new(&format!("LARGE: {}pt - Extra large text", font_sizes::LARGE)).font_size(font_sizes::LARGE);
    let heading_bullet = BulletPoint::new(&format!("HEADING: {}pt - Section headers", font_sizes::HEADING)).font_size(font_sizes::HEADING);
    let body_bullet = BulletPoint::new(&format!("BODY: {}pt - Regular content", font_sizes::BODY)).font_size(font_sizes::BODY);
    let small_bullet = BulletPoint::new(&format!("SMALL: {}pt - Smaller text", font_sizes::SMALL)).font_size(font_sizes::SMALL);
    let caption_bullet = BulletPoint::new(&format!("CAPTION: {}pt - Captions and notes", font_sizes::CAPTION)).font_size(font_sizes::CAPTION);
    
    let mut font_size_slide = SlideContent::new("Font Size Presets - Each line different size")
        .layout(SlideLayout::TitleAndContent)
        .title_color("1F497D")
        .title_bold(true)
        .title_size(font_sizes::TITLE);
    font_size_slide.bullets.push(large_bullet);
    font_size_slide.bullets.push(heading_bullet);
    font_size_slide.bullets.push(body_bullet);
    font_size_slide.bullets.push(small_bullet);
    font_size_slide.bullets.push(caption_bullet);
    
    slides.push(font_size_slide);

    // =========================================================================
    // SLIDE 28: Theme Colors (NEW v0.2.1)
    // =========================================================================
    println!("🎨 Slide 28: Theme Colors (NEW)");
    
    // Create shapes with theme colors
    let corporate_shape = Shape::new(ShapeType::Rectangle, 500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::CORPORATE.primary))
        .with_text("Corporate");
    
    let modern_shape = Shape::new(ShapeType::Rectangle, 2500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::MODERN.primary))
        .with_text("Modern");
    
    let vibrant_shape = Shape::new(ShapeType::Rectangle, 4500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::VIBRANT.primary))
        .with_text("Vibrant");
    
    let dark_shape = Shape::new(ShapeType::Rectangle, 6500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::DARK.primary))
        .with_text("Dark");
    
    let nature_shape = Shape::new(ShapeType::Rectangle, 500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::NATURE.primary))
        .with_text("Nature");
    
    let tech_shape = Shape::new(ShapeType::Rectangle, 2500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::TECH.primary))
        .with_text("Tech");
    
    let carbon_shape = Shape::new(ShapeType::Rectangle, 4500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::CARBON.primary))
        .with_text("Carbon");
    
    slides.push(
        SlideContent::new("Theme Color Palettes")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_shape(corporate_shape)
            .add_shape(modern_shape)
            .add_shape(vibrant_shape)
            .add_shape(dark_shape)
            .add_shape(nature_shape)
            .add_shape(tech_shape)
            .add_shape(carbon_shape)
    );

    // =========================================================================
    // SLIDE 29: Material & Carbon Design Colors (NEW v0.2.1)
    // =========================================================================
    println!("🌈 Slide 29: Material & Carbon Colors (NEW)");
    
    // Material Design colors
    let material_red = Shape::new(ShapeType::Rectangle, 500000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_RED))
        .with_text("M-Red");
    
    let material_blue = Shape::new(ShapeType::Rectangle, 1900000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_BLUE))
        .with_text("M-Blue");
    
    let material_green = Shape::new(ShapeType::Rectangle, 3300000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_GREEN))
        .with_text("M-Green");
    
    let material_orange = Shape::new(ShapeType::Rectangle, 4700000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_ORANGE))
        .with_text("M-Orange");
    
    let material_purple = Shape::new(ShapeType::Rectangle, 6100000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_PURPLE))
        .with_text("M-Purple");
    
    // Carbon Design colors
    let carbon_blue = Shape::new(ShapeType::Rectangle, 500000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_BLUE_60))
        .with_text("C-Blue");
    
    let carbon_green = Shape::new(ShapeType::Rectangle, 1900000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_GREEN_50))
        .with_text("C-Green");
    
    let carbon_red = Shape::new(ShapeType::Rectangle, 3300000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_RED_60))
        .with_text("C-Red");
    
    let carbon_purple = Shape::new(ShapeType::Rectangle, 4700000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_PURPLE_60))
        .with_text("C-Purple");
    
    let carbon_gray = Shape::new(ShapeType::Rectangle, 6100000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_GRAY_100))
        .with_text("C-Gray");
    
    slides.push(
        SlideContent::new("Material & Carbon Design Colors")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_shape(material_red)
            .add_shape(material_blue)
            .add_shape(material_green)
            .add_shape(material_orange)
            .add_shape(material_purple)
            .add_shape(carbon_blue)
            .add_shape(carbon_green)
            .add_shape(carbon_red)
            .add_shape(carbon_purple)
            .add_shape(carbon_gray)
    );

    // =========================================================================
    // SLIDE 30: Image from Base64 (NEW v0.2.1)
    // =========================================================================
    println!("🖼️ Slide 30: Image from Base64 (NEW)");
    
    // 1x1 red PNG pixel in base64
    let _red_pixel_base64 = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8DwHwAFBQIAX8jx0gAAAABJRU5ErkJggg==";
    
    // Create image from base64 (demonstrating the API)
    let _base64_image = ImageBuilder::from_base64(_red_pixel_base64, 914400, 914400, "PNG")
        .position(4000000, 2500000)
        .build();
    
    slides.push(
        SlideContent::new("Image Loading - New Methods")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Image::new(path) - Load from file path")
            .add_bullet("Image::from_base64(data) - Load from base64 string")
            .add_bullet("Image::from_bytes(data) - Load from raw bytes")
            .add_bullet("ImageBuilder for fluent API configuration")
            .add_bullet("Built-in base64 decoder (no external deps)")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 31: Feature Summary (NEW v0.2.1)
    // =========================================================================
    println!("📋 Slide 31: v0.2.1 Feature Summary (NEW)");
    
    slides.push(
        SlideContent::new("New Features in v0.2.1")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_numbered("BulletStyle: Number, Letter, Roman, Custom")
            .add_numbered("TextFormat: Strikethrough, Highlight")
            .add_numbered("TextFormat: Subscript, Superscript")
            .add_numbered("Font size presets in prelude")
            .add_numbered("Image::from_base64 and from_bytes")
            .add_numbered("Theme color palettes (7 themes)")
            .add_numbered("Material & Carbon Design colors")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 32: Slide Show Settings - Comparison Table (REAL: embedded in presProps.xml)
    // =========================================================================
    println!("🎬 Slide 34: Slide Show Settings (Visual)");

    let show_speaker = SlideShowSettings::new().pen_color(PenColor::red());
    let show_kiosk = SlideShowSettings::kiosk();
    let _show_range = SlideShowSettings::new()
        .show_type(ShowType::Browsed)
        .slide_range(SlideRange::Range { start: 1, end: 10 })
        .without_animation(true);
    let _speaker_xml = show_speaker.to_xml();
    let _kiosk_xml = show_kiosk.to_xml();

    let show_table = TableBuilder::new(vec![2000000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Setting").bold().background_color("1F4E79").text_color("FFFFFF"),
            TableCell::new("Speaker").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Kiosk").bold().background_color("ED7D31").text_color("FFFFFF"),
            TableCell::new("Browsed").bold().background_color("70AD47").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Loop").bold().background_color("D6E4F0"),
            TableCell::new("No"), TableCell::new("Yes").bold().text_color("2E7D32"),
            TableCell::new("No"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Narration").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("No").text_color("C62828"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Animation").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("Yes"),
            TableCell::new("No").text_color("C62828"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Timings").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("Auto"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Slide Range").bold().background_color("D6E4F0"),
            TableCell::new("All"), TableCell::new("All"),
            TableCell::new("1-10"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Pen Color").bold().background_color("D6E4F0"),
            TableCell::new("Red").text_color("FF0000"),
            TableCell::new("Red").text_color("FF0000"),
            TableCell::new("Red").text_color("FF0000"),
        ]))
        .position(300000, 1600000)
        .build();

    // Mode icons
    let icon_speaker = Shape::new(ShapeType::RoundedRectangle, 300000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Speaker: Full control");
    let icon_kiosk = Shape::new(ShapeType::RoundedRectangle, 3100000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Kiosk: Auto-loop");
    let icon_browsed = Shape::new(ShapeType::RoundedRectangle, 5900000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Browsed: Scrollbar");

    slides.push(
        SlideContent::new("Slide Show Settings - Mode Comparison")
            .table(show_table)
            .add_shape(icon_speaker)
            .add_shape(icon_kiosk)
            .add_shape(icon_browsed)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 35: Print Settings - Visual Handout Grid
    // =========================================================================
    println!("🖨️  Slide 35: Print Settings & Handouts (Visual)");

    let print = PrintSettings::new()
        .print_what(PrintWhat::Handouts)
        .color_mode(PrintColorMode::Grayscale)
        .handout_layout(GenHandoutLayout::SlidesPerPage6)
        .frame_slides(true)
        .header("Q1 2025 Strategy Review")
        .footer("Confidential - Internal Use Only")
        .print_date(true)
        .print_page_numbers(true);
    let _prnpr_xml = print.to_prnpr_xml();
    let _handout_xml = print.to_handout_master_xml();

    // Visual: 6-slide handout grid (2 cols x 3 rows)
    let hdr = Shape::new(ShapeType::Rectangle, 300000, 1500000, 4200000, 300000)
        .with_fill(ShapeFill::new("E7E6E6"))
        .with_text("Q1 2025 Strategy Review");
    // Row 1
    let s1 = Shape::new(ShapeType::Rectangle, 400000, 2000000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 1");
    let s2 = Shape::new(ShapeType::Rectangle, 2500000, 2000000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 2");
    // Row 2
    let s3 = Shape::new(ShapeType::Rectangle, 400000, 3200000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 3");
    let s4 = Shape::new(ShapeType::Rectangle, 2500000, 3200000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 4");
    // Row 3
    let s5 = Shape::new(ShapeType::Rectangle, 400000, 4400000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 5");
    let s6 = Shape::new(ShapeType::Rectangle, 2500000, 4400000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 6");
    let ftr = Shape::new(ShapeType::Rectangle, 300000, 5600000, 4200000, 300000)
        .with_fill(ShapeFill::new("E7E6E6"))
        .with_text("Confidential - Internal Use Only");

    // Settings summary table on the right
    let print_table = TableBuilder::new(vec![1800000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Print Settings").bold().background_color("1F4E79").text_color("FFFFFF"),
            TableCell::new("").background_color("1F4E79"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Print What").bold().background_color("D6E4F0"),
            TableCell::new("Handouts"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Color Mode").bold().background_color("D6E4F0"),
            TableCell::new("Grayscale"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Layout").bold().background_color("D6E4F0"),
            TableCell::new("6 slides/page"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Frame Slides").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Date").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Page Numbers").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .position(5000000, 1800000)
        .build();

    slides.push(
        SlideContent::new("Print Handout - 6 Slides Per Page")
            .table(print_table)
            .add_shape(hdr)
            .add_shape(s1).add_shape(s2)
            .add_shape(s3).add_shape(s4)
            .add_shape(s5).add_shape(s6)
            .add_shape(ftr)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 36: Advanced Table Merging - Actual Merged Table
    // =========================================================================
    println!("📊 Slide 36: Advanced Table Merging (Visual)");

    // Use TableMergeMap to compute states, then build a visual table
    let mut merge_map = TableMergeMap::new(5, 4);
    merge_map.merge_cells(0, 0, 1, 4).unwrap(); // Title row spans all 4 cols
    merge_map.merge_cells(1, 0, 2, 1).unwrap(); // "Products" spans 2 rows
    merge_map.merge_cells(3, 0, 2, 1).unwrap(); // "Services" spans 2 rows

    // Show merge state labels
    let state_00 = merge_map.cell_state(0, 0); // Anchor gridSpan=4
    let state_01 = merge_map.cell_state(0, 1); // HMerge
    let state_10 = merge_map.cell_state(1, 0); // Anchor rowSpan=2
    let state_20 = merge_map.cell_state(2, 0); // VMerge
    println!("   ├── (0,0): {}", state_00.to_xml_attrs().trim());
    println!("   ├── (0,1): {}", state_01.to_xml_attrs().trim());
    println!("   ├── (1,0): {}", state_10.to_xml_attrs().trim());
    println!("   └── (2,0): {}", state_20.to_xml_attrs().trim());

    // Build the table with REAL merge attributes (gridSpan, rowSpan, hMerge, vMerge)
    let merge_table = TableBuilder::new(vec![1500000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2025 Revenue Report").bold().background_color("1F4E79").text_color("FFFFFF").grid_span(4),
            TableCell::new("").background_color("1F4E79").h_merge(),
            TableCell::new("").background_color("1F4E79").h_merge(),
            TableCell::new("").background_color("1F4E79").h_merge(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Products").bold().background_color("BDD7EE").text_color("1F497D").row_span(2),
            TableCell::new("Hardware").background_color("E2EFDA"),
            TableCell::new("$450,000").text_color("2E7D32").align_right(),
            TableCell::new("+12%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("").background_color("BDD7EE").v_merge(),
            TableCell::new("Software").background_color("E2EFDA"),
            TableCell::new("$680,000").text_color("2E7D32").align_right(),
            TableCell::new("+25%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Services").bold().background_color("FCE4D6").text_color("C65911").row_span(2),
            TableCell::new("Consulting").background_color("FFF2CC"),
            TableCell::new("$320,000").text_color("2E7D32").align_right(),
            TableCell::new("+8%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("").background_color("FCE4D6").v_merge(),
            TableCell::new("Support").background_color("FFF2CC"),
            TableCell::new("$190,000").text_color("2E7D32").align_right(),
            TableCell::new("+5%").bold().text_color("2E7D32").align_right(),
        ]))
        .position(300000, 1600000)
        .build();

    // Legend shapes
    let legend_anchor = Shape::new(ShapeType::RoundedRectangle, 300000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Anchor (gridSpan/rowSpan)");
    let legend_hmerge = Shape::new(ShapeType::RoundedRectangle, 2500000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("hMerge (col covered)");
    let legend_vmerge = Shape::new(ShapeType::RoundedRectangle, 4700000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("vMerge (row covered)");
    let legend_normal = Shape::new(ShapeType::RoundedRectangle, 6900000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"))
        .with_text("Normal (no merge)");

    slides.push(
        SlideContent::new("Advanced Table Merging - Merged Cells")
            .table(merge_table)
            .add_shape(legend_anchor)
            .add_shape(legend_hmerge)
            .add_shape(legend_vmerge)
            .add_shape(legend_normal)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // Build PresentationSettings with all advanced features
    // =========================================================================
    println!("\n⚙️  Building Presentation Settings...");

    // Slide show settings (embedded in presProps.xml as <p:showPr>)
    let show_settings = SlideShowSettings::new()
        .show_type(ShowType::Speaker)
        .pen_color(PenColor::red())
        .use_timings(true);
    println!("   ├── Slide Show: Speaker mode, red pen, timings enabled");
    println!("   │   └── XML: {} bytes", show_settings.to_xml().len());

    // Print settings (embedded in presProps.xml as <p:prnPr>)
    let print_settings = PrintSettings::new()
        .print_what(PrintWhat::Handouts)
        .color_mode(PrintColorMode::Grayscale)
        .handout_layout(GenHandoutLayout::SlidesPerPage6)
        .frame_slides(true)
        .header("Q1 2025 Strategy Review")
        .footer("Confidential - Internal Use Only")
        .print_date(true)
        .print_page_numbers(true);
    println!("   └── Print: Handouts, 6/page, grayscale, framed");
    println!("       └── XML: {} bytes", print_settings.to_prnpr_xml().len());

    let pres_settings = PresentationSettings::new()
        .slide_show(show_settings)
        .print(print_settings);
    println!("   All settings configured → presProps.xml");

    // =========================================================================
    // Generate PPTX with real integrated features
    // =========================================================================
    println!("\n📦 Generating PPTX with integrated features...");
    let pptx_data = create_pptx_with_settings(
        "PPTX-RS Element Showcase",
        slides.clone(),
        Some(pres_settings),
    )?;
    fs::write("comprehensive_demo.pptx", &pptx_data)?;
    println!("   ✓ Created comprehensive_demo.pptx ({} slides, {} bytes)", 
             slides.len(), pptx_data.len());

    // =========================================================================
    // Package Analysis - Demonstrate Reading
    // =========================================================================
    println!("\n📖 Package Analysis (Read Capability):");
    
    let package = Package::open("comprehensive_demo.pptx")?;
    let paths = package.part_paths();
    
    let slide_count = paths.iter()
        .filter(|p| p.starts_with("ppt/slides/slide") && p.ends_with(".xml"))
        .count();
    
    println!("   ├── Total parts: {}", package.part_count());
    println!("   ├── Slides: {}", slide_count);
    println!("   └── Package opened and analyzed successfully");

    // =========================================================================
    // NEW: Parts API Demonstration
    // =========================================================================
    println!("\n🧩 Parts API Demonstration:");
    
    // SlideLayoutPart - 11 layout types
    println!("   ┌── SlideLayoutPart (11 layout types):");
    let layouts = [
        LayoutType::Title,
        LayoutType::TitleAndContent,
        LayoutType::SectionHeader,
        LayoutType::TwoContent,
        LayoutType::Comparison,
        LayoutType::TitleOnly,
        LayoutType::Blank,
        LayoutType::ContentWithCaption,
        LayoutType::PictureWithCaption,
        LayoutType::TitleAndVerticalText,
        LayoutType::VerticalTitleAndText,
    ];
    for (i, layout_type) in layouts.iter().enumerate() {
        let layout = SlideLayoutPart::new(i + 1, *layout_type);
        if i < 3 {
            println!("   │   ├── {}: {} ({})", i + 1, layout_type.name(), layout.path());
        }
    }
    println!("   │   └── ... and {} more layout types", layouts.len() - 3);
    
    // SlideMasterPart
    println!("   ├── SlideMasterPart:");
    let mut master = SlideMasterPart::new(1);
    master.set_name("Custom Master");
    master.add_layout_rel_id("rId2");
    master.add_layout_rel_id("rId3");
    println!("   │   ├── Name: {}", master.name());
    println!("   │   ├── Path: {}", master.path());
    println!("   │   └── Layouts: {} linked", master.layout_rel_ids().len());
    
    // ThemePart - Colors and Fonts
    println!("   ├── ThemePart (colors & fonts):");
    let mut theme = ThemePart::new(1);
    theme.set_name("Corporate Theme");
    theme.set_major_font("Arial");
    theme.set_minor_font("Calibri");
    theme.set_color("accent1", "FF5733");
    theme.set_color("accent2", "33FF57");
    let theme_xml = theme.to_xml()?;
    println!("   │   ├── Name: {}", theme.name());
    println!("   │   ├── Major Font: Arial");
    println!("   │   ├── Minor Font: Calibri");
    println!("   │   └── XML size: {} bytes", theme_xml.len());
    
    // NotesSlidePart - Speaker notes
    println!("   ├── NotesSlidePart (speaker notes):");
    let notes = NotesSlidePart::with_text(1, "Remember to:\n- Introduce yourself\n- Explain the agenda\n- Ask for questions");
    let notes_xml = notes.to_xml()?;
    println!("   │   ├── Path: {}", notes.path());
    println!("   │   ├── Text: \"{}...\"", &notes.notes_text()[..20.min(notes.notes_text().len())]);
    println!("   │   └── XML size: {} bytes", notes_xml.len());
    
    // AppPropertiesPart - Application metadata
    println!("   ├── AppPropertiesPart (metadata):");
    let mut app_props = AppPropertiesPart::new();
    app_props.set_company("Acme Corporation");
    app_props.set_slides(slides.len() as u32);
    let app_xml = app_props.to_xml()?;
    println!("   │   ├── Company: Acme Corporation");
    println!("   │   ├── Slides: {}", slides.len());
    println!("   │   └── XML size: {} bytes", app_xml.len());
    
    // MediaPart - Video/Audio formats
    println!("   ├── MediaPart (10 media formats):");
    println!("   │   ├── Video: mp4, webm, avi, wmv, mov");
    println!("   │   ├── Audio: mp3, wav, wma, m4a, ogg");
    let sample_media = MediaPart::new(1, MediaFormat::Mp4, vec![0; 100]);
    println!("   │   └── Sample: {} ({})", sample_media.path(), sample_media.format().mime_type());
    
    // TablePart - Table with formatting
    println!("   ├── TablePart (cell formatting):");
    let table_part = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Header 1").bold().background("4472C4"),
            TableCellPart::new("Header 2").bold().background("4472C4"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Data 1").color("333333"),
            TableCellPart::new("Data 2").italic(),
        ]))
        .position(EMU_PER_INCH, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 6, EMU_PER_INCH * 2);
    let table_xml = table_part.to_slide_xml(10);
    println!("   │   ├── Rows: {}", table_part.rows.len());
    println!("   │   ├── Features: bold, italic, colors, backgrounds");
    println!("   │   └── XML size: {} bytes", table_xml.len());
    
    // ContentTypesPart
    println!("   └── ContentTypesPart:");
    let mut content_types = ContentTypesPart::new();
    content_types.add_presentation();
    content_types.add_slide(1);
    content_types.add_slide_layout(1);
    content_types.add_slide_master(1);
    content_types.add_theme(1);
    content_types.add_core_properties();
    content_types.add_app_properties();
    let ct_xml = content_types.to_xml()?;
    println!("       ├── Path: {}", content_types.path());
    println!("       └── XML size: {} bytes", ct_xml.len());

    // =========================================================================
    // NEW: Elements API Demonstration
    // =========================================================================
    println!("\n🎨 Elements API Demonstration:");
    
    // Color types
    println!("   ┌── Color Types:");
    let rgb = RgbColor::new(255, 87, 51);
    let rgb_hex = RgbColor::from_hex("#4472C4").unwrap();
    let scheme = SchemeColor::Accent1;
    let color = Color::rgb(100, 149, 237);
    println!("   │   ├── RgbColor::new(255, 87, 51) → {}", rgb.to_hex());
    println!("   │   ├── RgbColor::from_hex(\"#4472C4\") → {}", rgb_hex.to_hex());
    println!("   │   ├── SchemeColor::Accent1 → {}", scheme.as_str());
    println!("   │   └── Color::rgb(100, 149, 237) → XML: {}", color.to_xml().chars().take(30).collect::<String>());
    
    // Position and Size
    println!("   ├── Position & Size (EMU units):");
    let pos = Position::from_inches(1.0, 2.0);
    let size = Size::from_inches(4.0, 3.0);
    println!("   │   ├── Position::from_inches(1.0, 2.0) → x={}, y={}", pos.x, pos.y);
    println!("   │   ├── Size::from_inches(4.0, 3.0) → w={}, h={}", size.width, size.height);
    println!("   │   └── EMU_PER_INCH = {}", EMU_PER_INCH);
    
    // Transform
    println!("   └── Transform (position + size + rotation):");
    let transform = Transform::from_inches(1.0, 1.5, 3.0, 2.0).with_rotation(45.0);
    let transform_xml = transform.to_xml();
    println!("       ├── Transform::from_inches(1.0, 1.5, 3.0, 2.0)");
    println!("       ├── .with_rotation(45.0)");
    println!("       └── XML: {}...", &transform_xml[..50.min(transform_xml.len())]);

    // =========================================================================
    // NEW: Advanced Features Demonstration
    // =========================================================================
    println!("\n🚀 Advanced Features Demonstration:");

    // -------------------------------------------------------------------------
    // Complex Table Examples
    // -------------------------------------------------------------------------
    println!("   ┌── Complex Table Examples:");
    
    // Example 1: Financial Report Table
    println!("   │   ┌── Financial Report Table (5x4 with formatting):");
    let financial_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Q1 2024 Financial Summary")
                .col_span(4)
                .bold()
                .center()
                .background("1F4E79")
                .color("FFFFFF")
                .font_size(14)
                .font("Arial Black"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Category").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Revenue").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Expenses").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Profit").bold().center().background("2E75B6").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Product Sales").align(HorizontalAlign::Left),
            TableCellPart::new("$1,250,000").align(HorizontalAlign::Right).color("2E7D32"),
            TableCellPart::new("$450,000").align(HorizontalAlign::Right).color("C62828"),
            TableCellPart::new("$800,000").align(HorizontalAlign::Right).bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Services").align(HorizontalAlign::Left),
            TableCellPart::new("$890,000").align(HorizontalAlign::Right).color("2E7D32"),
            TableCellPart::new("$320,000").align(HorizontalAlign::Right).color("C62828"),
            TableCellPart::new("$570,000").align(HorizontalAlign::Right).bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Total").bold().background("E7E6E6"),
            TableCellPart::new("$2,140,000").bold().align(HorizontalAlign::Right).background("E7E6E6"),
            TableCellPart::new("$770,000").bold().align(HorizontalAlign::Right).background("E7E6E6"),
            TableCellPart::new("$1,370,000").bold().align(HorizontalAlign::Right).background("C6EFCE").color("006100"),
        ]))
        .position(EMU_PER_INCH / 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 8, EMU_PER_INCH * 3);
    let fin_xml = financial_table.to_slide_xml(100);
    println!("   │   │   ├── Merged header spanning 4 columns");
    println!("   │   │   ├── Color-coded values (green=positive, red=negative)");
    println!("   │   │   ├── Custom fonts and sizes");
    println!("   │   │   └── XML: {} bytes", fin_xml.len());

    // Example 2: Comparison Matrix
    println!("   │   ├── Comparison Matrix (features vs products):");
    let matrix_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Feature").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Basic").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Pro").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Enterprise").bold().center().background("4472C4").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Storage").align(HorizontalAlign::Left),
            TableCellPart::new("5 GB").center(),
            TableCellPart::new("50 GB").center(),
            TableCellPart::new("Unlimited").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Users").align(HorizontalAlign::Left),
            TableCellPart::new("1").center(),
            TableCellPart::new("10").center(),
            TableCellPart::new("Unlimited").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Support").align(HorizontalAlign::Left),
            TableCellPart::new("Email").center(),
            TableCellPart::new("24/7 Chat").center(),
            TableCellPart::new("Dedicated").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Price/mo").bold().background("F2F2F2"),
            TableCellPart::new("$9").center().bold().background("F2F2F2"),
            TableCellPart::new("$29").center().bold().background("F2F2F2"),
            TableCellPart::new("$99").center().bold().background("F2F2F2"),
        ]));
    println!("   │   │   └── 5x4 matrix with alternating styles");

    // Example 3: Schedule/Timeline Table
    println!("   │   └── Schedule Table (with row spans):");
    let schedule_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Time").bold().center().background("70AD47").color("FFFFFF"),
            TableCellPart::new("Monday").bold().center().background("70AD47").color("FFFFFF"),
            TableCellPart::new("Tuesday").bold().center().background("70AD47").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("9:00 AM").center().background("E2EFDA"),
            TableCellPart::new("Team Standup").center().row_span(2).valign(VerticalAlign::Middle).background("BDD7EE"),
            TableCellPart::new("Code Review").center(),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("10:00 AM").center().background("E2EFDA"),
            TableCellPart::merged(),
            TableCellPart::new("Sprint Planning").center().background("FCE4D6"),
        ]));
    println!("   │       └── Row spans for multi-hour events");

    // -------------------------------------------------------------------------
    // Complex Animation Sequences
    // -------------------------------------------------------------------------
    println!("   ├── Complex Animation Sequences:");
    
    // Sequence 1: Title entrance with staggered content
    println!("   │   ┌── Staggered Entrance Sequence:");
    let title_anim = Animation::new(2, AnimationEffect::Fade)
        .trigger(AnimationTrigger::OnClick)
        .duration(500);
    let content1 = Animation::new(3, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(200);
    let content2 = Animation::new(4, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(100);
    let content3 = Animation::new(5, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(100);
    let staggered = SlideAnimations::new()
        .add(title_anim)
        .add(content1)
        .add(content2)
        .add(content3)
        .transition(SlideTransition::new(TransitionEffect::Push).direction(AnimationDirection::Left).duration(750));
    let staggered_xml = staggered.to_timing_xml()?;
    println!("   │   │   ├── Title: Fade on click");
    println!("   │   │   ├── Content 1-3: FlyIn with 100ms stagger");
    println!("   │   │   ├── Transition: Push from left (750ms)");
    println!("   │   │   └── XML: {} bytes", staggered_xml.len());

    // Sequence 2: Emphasis and exit
    println!("   │   ├── Emphasis + Exit Sequence:");
    let emphasis = Animation::new(6, AnimationEffect::Pulse)
        .trigger(AnimationTrigger::OnClick)
        .duration(1000)
        .repeat(3);
    let exit = Animation::new(6, AnimationEffect::FadeOut)
        .trigger(AnimationTrigger::AfterPrevious)
        .duration(500);
    let emphasis_seq = SlideAnimations::new()
        .add(emphasis)
        .add(exit);
    println!("   │   │   ├── Pulse 3x on click, then fade out");
    println!("   │   │   └── Same shape, sequential effects");

    // Sequence 3: Motion path
    println!("   │   └── Motion Path Animation:");
    let motion = Animation::new(7, AnimationEffect::Lines)
        .trigger(AnimationTrigger::OnClick)
        .duration(2000);
    println!("   │       └── Custom path: Lines, Arcs, Turns, Loops");

    // -------------------------------------------------------------------------
    // SmartArt Combinations
    // -------------------------------------------------------------------------
    println!("   ├── SmartArt Layout Examples:");
    
    // Process flow
    println!("   │   ┌── Process Flow (5 steps):");
    let process = SmartArtPart::new(1, SmartArtLayout::BasicProcess)
        .add_items(vec!["Research", "Design", "Develop", "Test", "Deploy"])
        .position(EMU_PER_INCH / 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 8, EMU_PER_INCH * 2);
    println!("   │   │   └── {} nodes in horizontal flow", process.nodes().len());

    // Organization chart
    println!("   │   ├── Organization Chart:");
    let org = SmartArtPart::new(2, SmartArtLayout::OrgChart)
        .add_items(vec!["CEO", "CTO", "CFO", "VP Engineering", "VP Sales"]);
    println!("   │   │   └── Hierarchical structure with {} positions", org.nodes().len());

    // Cycle diagram
    println!("   │   ├── Cycle Diagram:");
    let cycle = SmartArtPart::new(3, SmartArtLayout::BasicCycle)
        .add_items(vec!["Plan", "Do", "Check", "Act"]);
    println!("   │   │   └── PDCA cycle with {} phases", cycle.nodes().len());

    // Venn diagram
    println!("   │   ├── Venn Diagram:");
    let venn = SmartArtPart::new(4, SmartArtLayout::BasicVenn)
        .add_items(vec!["Skills", "Passion", "Market Need"]);
    println!("   │   │   └── 3-circle Venn for Ikigai concept");

    // Pyramid
    println!("   │   └── Pyramid:");
    let pyramid = SmartArtPart::new(5, SmartArtLayout::BasicPyramid)
        .add_items(vec!["Self-Actualization", "Esteem", "Love/Belonging", "Safety", "Physiological"]);
    println!("   │       └── Maslow's hierarchy with {} levels", pyramid.nodes().len());

    // -------------------------------------------------------------------------
    // 3D Model Configurations
    // -------------------------------------------------------------------------
    println!("   ├── 3D Model Configurations:");
    
    // Product showcase
    println!("   │   ┌── Product Showcase:");
    let product_3d = Model3DPart::new(1, Model3DFormat::Glb, vec![0; 100])
        .camera(CameraPreset::IsometricTopUp)
        .rotation(0.0, 45.0, 0.0)
        .zoom(1.2)
        .position(EMU_PER_INCH * 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 4, EMU_PER_INCH * 4);
    println!("   │   │   ├── Camera: Isometric top-up view");
    println!("   │   │   ├── Rotation: 45° Y-axis for best angle");
    println!("   │   │   └── Zoom: 1.2x for detail");

    // Architectural model
    println!("   │   ├── Architectural Model:");
    let arch_3d = Model3DPart::new(2, Model3DFormat::Gltf, vec![0; 100])
        .camera(CameraPreset::Front)
        .rotation(15.0, -30.0, 0.0)
        .ambient_light("FFFFCC");
    println!("   │   │   ├── Camera: Front view with tilt");
    println!("   │   │   └── Ambient: Warm lighting (FFFFCC)");

    // Technical diagram
    println!("   │   └── Technical Diagram:");
    let tech_3d = Model3DPart::new(3, Model3DFormat::Obj, vec![0; 100])
        .camera(CameraPreset::IsometricOffAxis1Top)
        .rotation(0.0, 0.0, 0.0);
    println!("   │       └── Camera: Off-axis isometric for exploded view");

    // -------------------------------------------------------------------------
    // Theme + Master + Layout Combination
    // -------------------------------------------------------------------------
    println!("   ├── Theme + Master + Layout Integration:");
    
    // Corporate theme
    let mut corp_theme = ThemePart::new(1);
    corp_theme.set_name("Corporate Blue");
    corp_theme.set_major_font("Segoe UI");
    corp_theme.set_minor_font("Segoe UI Light");
    corp_theme.set_color("dk1", "000000");
    corp_theme.set_color("lt1", "FFFFFF");
    corp_theme.set_color("dk2", "1F497D");
    corp_theme.set_color("lt2", "EEECE1");
    corp_theme.set_color("accent1", "4472C4");
    corp_theme.set_color("accent2", "ED7D31");
    corp_theme.set_color("accent3", "A5A5A5");
    corp_theme.set_color("accent4", "FFC000");
    corp_theme.set_color("accent5", "5B9BD5");
    corp_theme.set_color("accent6", "70AD47");
    let theme_xml = corp_theme.to_xml()?;
    println!("   │   ├── Theme: Corporate Blue");
    println!("   │   │   ├── Fonts: Segoe UI / Segoe UI Light");
    println!("   │   │   ├── 12 color slots defined");
    println!("   │   │   └── XML: {} bytes", theme_xml.len());

    // Master with multiple layouts
    let mut corp_master = SlideMasterPart::new(1);
    corp_master.set_name("Corporate Master");
    corp_master.add_layout_rel_id("rId2"); // Title
    corp_master.add_layout_rel_id("rId3"); // Title + Content
    corp_master.add_layout_rel_id("rId4"); // Section Header
    corp_master.add_layout_rel_id("rId5"); // Two Content
    corp_master.add_layout_rel_id("rId6"); // Comparison
    corp_master.add_layout_rel_id("rId7"); // Title Only
    corp_master.add_layout_rel_id("rId8"); // Blank
    println!("   │   └── Master: {} with {} layouts linked", corp_master.name(), corp_master.layout_rel_ids().len());

    // -------------------------------------------------------------------------
    // VBA + Custom XML Integration
    // -------------------------------------------------------------------------
    println!("   ├── VBA + Custom XML Integration:");
    
    // VBA with multiple modules
    let vba_project = VbaProjectPart::new()
        .add_module(VbaModule::new("AutoRun", r#"
Sub Auto_Open()
    MsgBox "Welcome to the presentation!"
End Sub

Sub NavigateToSlide(slideNum As Integer)
    SlideShowWindows(1).View.GotoSlide slideNum
End Sub
"#))
        .add_module(VbaModule::new("DataHelpers", r#"
Function GetCustomData(key As String) As String
    ' Read from Custom XML part
    GetCustomData = ActivePresentation.CustomXMLParts(1).SelectSingleNode("//" & key).Text
End Function
"#))
        .add_module(VbaModule::class("SlideController", r#"
Private currentSlide As Integer

Public Sub NextSlide()
    currentSlide = currentSlide + 1
    NavigateToSlide currentSlide
End Sub
"#));
    println!("   │   ├── VBA Project:");
    println!("   │   │   ├── AutoRun: Auto_Open, NavigateToSlide");
    println!("   │   │   ├── DataHelpers: GetCustomData (reads Custom XML)");
    println!("   │   │   └── SlideController: Class for navigation");

    // Custom XML with structured data
    let app_config = CustomXmlPart::new(1, "presentationConfig")
        .namespace("http://company.com/pptx/config")
        .property("version", "2.1.0")
        .property("author", "Demo User")
        .property("department", "Engineering")
        .property("confidentiality", "Internal")
        .property("lastModified", "2024-01-15T10:30:00Z");
    let config_xml = app_config.to_xml()?;
    println!("   │   └── Custom XML:");
    println!("   │       ├── Namespace: http://company.com/pptx/config");
    println!("   │       ├── Properties: version, author, department, etc.");
    println!("   │       └── XML: {} bytes", config_xml.len());

    // -------------------------------------------------------------------------
    // Embedded Fonts with Variants
    // -------------------------------------------------------------------------
    println!("   ├── Embedded Font Collection:");
    let mut font_collection = EmbeddedFontCollection::new();
    font_collection.add("Corporate Sans", vec![0; 1000]);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::Bold);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::Italic);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::BoldItalic);
    font_collection.add("Code Mono", vec![0; 800]);
    let fonts_xml = font_collection.to_xml();
    println!("   │   ├── Corporate Sans: Regular, Bold, Italic, BoldItalic");
    println!("   │   ├── Code Mono: Regular");
    println!("   │   ├── Total: {} font files", font_collection.len());
    println!("   │   └── XML: {} bytes", fonts_xml.len());

    // -------------------------------------------------------------------------
    // Handout with Full Configuration
    // -------------------------------------------------------------------------
    println!("   └── Handout Master Configuration:");
    let handout = HandoutMasterPart::new()
        .layout(HandoutLayout::SlidesPerPage6)
        .header("Q1 2024 Strategy Review")
        .footer("Confidential - Internal Use Only");
    let handout_xml = handout.to_xml()?;
    println!("       ├── Layout: 6 slides per page");
    println!("       ├── Header: Q1 2024 Strategy Review");
    println!("       ├── Footer: Confidential - Internal Use Only");
    println!("       └── XML: {} bytes", handout_xml.len());

    // =========================================================================
    // Summary
    // =========================================================================
    println!("\n╔══════════════════════════════════════════════════════════════╗");
    println!("║                    Element Coverage Summary                   ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  LAYOUTS (6 types):                                          ║");
    println!("║    ✓ CenteredTitle    ✓ TitleOnly      ✓ TitleAndContent     ║");
    println!("║    ✓ TitleAndBigContent  ✓ TwoColumn   ✓ Blank               ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  TEXT FORMATTING:                                            ║");
    println!("║    ✓ Bold            ✓ Italic         ✓ Underline            ║");
    println!("║    ✓ Font Size       ✓ Font Color     ✓ Title/Content styles ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  TABLES:                                                     ║");
    println!("║    ✓ Multiple rows/columns  ✓ Bold cells  ✓ Background colors║");
    println!("║    ✓ Header styling         ✓ Position control               ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  CHARTS:                                                     ║");
    println!("║    ✓ Bar Chart       ✓ Line Chart     ✓ Pie Chart            ║");
    println!("║    ✓ Multiple series ✓ Categories                            ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  SHAPES:                                                     ║");
    println!("║    ✓ Rectangle       ✓ Ellipse        ✓ RoundedRectangle     ║");
    println!("║    ✓ Triangle        ✓ Diamond        ✓ Color fills          ║");
    println!("║    ✓ Gradient fills  ✓ Transparency   ✓ Text in shapes       ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  CONNECTORS (NEW):                                           ║");
    println!("║    ✓ Straight        ✓ Elbow          ✓ Curved               ║");
    println!("║    ✓ Arrow types     ✓ Dash styles    ✓ Line colors/widths   ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  IMAGES:                                                     ║");
    println!("║    ✓ Image placeholders  ✓ Position   ✓ Dimensions           ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  PACKAGE:                                                    ║");
    println!("║    ✓ Create PPTX     ✓ Read PPTX      ✓ Analyze contents     ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  PARTS API (NEW):                                            ║");
    println!("║    ✓ SlideLayoutPart (11 types)  ✓ SlideMasterPart           ║");
    println!("║    ✓ ThemePart (colors/fonts)    ✓ NotesSlidePart            ║");
    println!("║    ✓ AppPropertiesPart           ✓ MediaPart (10 formats)    ║");
    println!("║    ✓ TablePart (cell formatting) ✓ ContentTypesPart          ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  ELEMENTS API:                                               ║");
    println!("║    ✓ RgbColor        ✓ SchemeColor    ✓ Color enum           ║");
    println!("║    ✓ Position        ✓ Size           ✓ Transform            ║");
    println!("║    ✓ EMU conversions (inches, cm, mm, pt)                    ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  ADVANCED FEATURES (NEW):                                    ║");
    println!("║    ✓ Animation (50+ effects)  ✓ Transitions (27 types)       ║");
    println!("║    ✓ SmartArt (25 layouts)    ✓ 3D Models (GLB/GLTF/OBJ)     ║");
    println!("║    ✓ VBA Macros (.pptm)       ✓ Embedded Fonts               ║");
    println!("║    ✓ Custom XML               ✓ Handout Master               ║");
    println!("║    ✓ Table borders/alignment  ✓ Merged cells                 ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  Output: comprehensive_demo.pptx ({} slides, {} KB)         ║", 
             slides.len(), pptx_data.len() / 1024);
    println!("╚══════════════════════════════════════════════════════════════╝");

    Ok(())
}

pub fn add_shape(self, shape: Shape) -> Self

Add a shape to the slide

Examples found in repository

examples/comprehensive_demo.rs (line 258)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    println!("╔══════════════════════════════════════════════════════════════╗");
    println!("║       PPTX-RS Element Showcase - Complete Coverage           ║");
    println!("╚══════════════════════════════════════════════════════════════╝\n");

    let mut slides = Vec::new();

    // =========================================================================
    // SLIDE 1: CenteredTitle Layout + Title Formatting
    // =========================================================================
    println!("📐 Slide 1: CenteredTitle Layout + Title Formatting");
    slides.push(
        SlideContent::new("PPTX-RS Element Showcase")
            .layout(SlideLayout::CenteredTitle)
            .title_size(54)
            .title_bold(true)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 2: TitleOnly Layout
    // =========================================================================
    println!("📐 Slide 2: TitleOnly Layout");
    slides.push(
        SlideContent::new("Section: Slide Layouts")
            .layout(SlideLayout::TitleOnly)
            .title_size(48)
            .title_bold(true)
            .title_color("C0504D")
    );

    // =========================================================================
    // SLIDE 3: TitleAndContent Layout + All Text Formatting
    // =========================================================================
    println!("📝 Slide 3: TitleAndContent + Text Formatting");
    slides.push(
        SlideContent::new("Text Formatting Options")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .title_italic(true)
            .title_underline(true)
            .title_size(44)
            .add_bullet("Normal text (default)")
            .add_bullet("Bold content text")
            .add_bullet("Italic content text")
            .add_bullet("Underlined content")
            .add_bullet("Custom font size (28pt)")
            .add_bullet("Custom color (#4F81BD)")
            .content_bold(true)
            .content_italic(true)
            .content_underline(true)
            .content_size(28)
            .content_color("4F81BD")
    );

    // =========================================================================
    // SLIDE 4: TitleAndBigContent Layout
    // =========================================================================
    println!("📐 Slide 4: TitleAndBigContent Layout");
    slides.push(
        SlideContent::new("Key Highlights")
            .layout(SlideLayout::TitleAndBigContent)
            .title_color("1F497D")
            .add_bullet("Large content area for emphasis")
            .add_bullet("Perfect for key messages")
            .add_bullet("Smaller title, bigger content")
            .content_bold(true)
            .content_size(32)
    );

    // =========================================================================
    // SLIDE 5: TwoColumn Layout
    // =========================================================================
    println!("📐 Slide 5: TwoColumn Layout");
    slides.push(
        SlideContent::new("Two Column Comparison")
            .layout(SlideLayout::TwoColumn)
            .title_color("1F497D")
            .add_bullet("Left Column Item 1")
            .add_bullet("Left Column Item 2")
            .add_bullet("Left Column Item 3")
            .add_bullet("Right Column Item 1")
            .add_bullet("Right Column Item 2")
            .add_bullet("Right Column Item 3")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 6: Blank Layout
    // =========================================================================
    println!("📐 Slide 6: Blank Layout");
    slides.push(
        SlideContent::new("")
            .layout(SlideLayout::Blank)
    );

    // =========================================================================
    // SLIDE 7: Table with All Cell Styling Options
    // =========================================================================
    println!("📊 Slide 7: Table with Cell Styling");
    let styled_table = TableBuilder::new(vec![1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Header 1").bold().background_color("1F497D"),
            TableCell::new("Header 2").bold().background_color("4F81BD"),
            TableCell::new("Header 3").bold().background_color("8064A2"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Bold Cell").bold(),
            TableCell::new("Normal Cell"),
            TableCell::new("Colored").background_color("9BBB59"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Red BG").background_color("C0504D"),
            TableCell::new("Green BG").background_color("9BBB59"),
            TableCell::new("Blue BG").background_color("4F81BD"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Row 3 Col 1"),
            TableCell::new("Row 3 Col 2"),
            TableCell::new("Row 3 Col 3").bold().background_color("F79646"),
        ]))
        .position(500000, 1800000)
        .build();
    
    slides.push(
        SlideContent::new("Table with Cell Styling")
            .table(styled_table)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 8: Charts (Bar, Line, Pie)
    // =========================================================================
    println!("📈 Slide 8: Chart Types");
    
    // Create chart data structures (for demonstration)
    let _bar_chart = ChartBuilder::new("Sales by Region", ChartType::Bar)
        .categories(vec!["North", "South", "East", "West"])
        .add_series(ChartSeries::new("2023", vec![100.0, 80.0, 120.0, 90.0]))
        .add_series(ChartSeries::new("2024", vec![120.0, 95.0, 140.0, 110.0]))
        .build();
    
    let _line_chart = ChartBuilder::new("Monthly Trend", ChartType::Line)
        .categories(vec!["Jan", "Feb", "Mar", "Apr", "May", "Jun"])
        .add_series(ChartSeries::new("Revenue", vec![10.0, 12.0, 15.0, 14.0, 18.0, 22.0]))
        .build();
    
    let _pie_chart = ChartBuilder::new("Market Share", ChartType::Pie)
        .categories(vec!["Product A", "Product B", "Product C", "Others"])
        .add_series(ChartSeries::new("Share", vec![40.0, 30.0, 20.0, 10.0]))
        .build();
    
    slides.push(
        SlideContent::new("Chart Types: Bar, Line, Pie")
            .with_chart()
            .title_color("1F497D")
            .add_bullet("Bar Chart: Compare categories")
            .add_bullet("Line Chart: Show trends over time")
            .add_bullet("Pie Chart: Show proportions")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 9: Shapes with Different Fills
    // =========================================================================
    println!("🔷 Slide 9: Shapes with Fills");
    
    let rect = Shape::new(ShapeType::Rectangle, 500000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("4F81BD"))
        .with_text("Rectangle");
    
    let ellipse = Shape::new(ShapeType::Ellipse, 3000000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("9BBB59"))
        .with_text("Ellipse");
    
    let rounded = Shape::new(ShapeType::RoundedRectangle, 5500000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("C0504D"))
        .with_text("Rounded");
    
    let triangle = Shape::new(ShapeType::Triangle, 1500000, 3000000, 1500000, 1200000)
        .with_fill(ShapeFill::new("8064A2"))
        .with_text("Triangle");
    
    let diamond = Shape::new(ShapeType::Diamond, 4000000, 3000000, 1500000, 1200000)
        .with_fill(ShapeFill::new("F79646"))
        .with_text("Diamond");
    
    slides.push(
        SlideContent::new("Shape Types with Color Fills")
            .add_shape(rect)
            .add_shape(ellipse)
            .add_shape(rounded)
            .add_shape(triangle)
            .add_shape(diamond)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 10: Gradient Fills (NEW)
    // =========================================================================
    println!("🌈 Slide 10: Gradient Fills");
    
    // Horizontal gradient
    let gradient_h = Shape::new(ShapeType::Rectangle, 500000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("1565C0", "42A5F5", GradientDirection::Horizontal))
        .with_text("Horizontal");
    
    // Vertical gradient
    let gradient_v = Shape::new(ShapeType::Rectangle, 3200000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("2E7D32", "81C784", GradientDirection::Vertical))
        .with_text("Vertical");
    
    // Diagonal gradient
    let gradient_d = Shape::new(ShapeType::RoundedRectangle, 5900000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("C62828", "EF9A9A", GradientDirection::DiagonalDown))
        .with_text("Diagonal");
    
    // Three-color gradient
    let gradient_3 = Shape::new(ShapeType::Ellipse, 1800000, 3200000, 2500000, 1200000)
        .with_gradient(GradientFill::three_color("FF6F00", "FFC107", "FFEB3B", GradientDirection::Horizontal))
        .with_text("3-Color");
    
    // Custom angle gradient
    let gradient_angle = Shape::new(ShapeType::RoundedRectangle, 4800000, 3200000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("7B1FA2", "E1BEE7", GradientDirection::Angle(135)))
        .with_text("135° Angle");
    
    slides.push(
        SlideContent::new("Gradient Fills - Multiple Directions")
            .add_shape(gradient_h)
            .add_shape(gradient_v)
            .add_shape(gradient_d)
            .add_shape(gradient_3)
            .add_shape(gradient_angle)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 11: Transparency (NEW)
    // =========================================================================
    println!("👻 Slide 11: Transparency Effects");
    
    // Base shape (fully opaque)
    let base = Shape::new(ShapeType::Rectangle, 1000000, 1800000, 3000000, 2000000)
        .with_fill(ShapeFill::new("1565C0"))
        .with_text("Base (100%)");
    
    // 25% transparent overlay
    let trans_25 = Shape::new(ShapeType::Rectangle, 2000000, 2200000, 2500000, 1500000)
        .with_fill(ShapeFill::new("F44336").with_transparency(25))
        .with_line(ShapeLine::new("B71C1C", 25400))
        .with_text("25% Transparent");
    
    // 50% transparent overlay
    let trans_50 = Shape::new(ShapeType::Ellipse, 4500000, 1800000, 2500000, 2000000)
        .with_fill(ShapeFill::new("4CAF50").with_transparency(50))
        .with_line(ShapeLine::new("1B5E20", 25400))
        .with_text("50% Transparent");
    
    // 75% transparent overlay
    let trans_75 = Shape::new(ShapeType::RoundedRectangle, 5500000, 2500000, 2500000, 1500000)
        .with_fill(ShapeFill::new("FF9800").with_transparency(75))
        .with_line(ShapeLine::new("E65100", 25400))
        .with_text("75% Transparent");
    
    slides.push(
        SlideContent::new("Transparency Effects - Overlapping Shapes")
            .add_shape(base)
            .add_shape(trans_25)
            .add_shape(trans_50)
            .add_shape(trans_75)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 12: Styled Connectors (NEW)
    // =========================================================================
    println!("🔗 Slide 12: Styled Connectors");
    
    // Create shapes to connect
    let box1 = Shape::new(ShapeType::RoundedRectangle, 500000, 1800000, 1800000, 800000)
        .with_id(100)
        .with_fill(ShapeFill::new("1565C0"))
        .with_text("Start");
    
    let box2 = Shape::new(ShapeType::RoundedRectangle, 3500000, 1800000, 1800000, 800000)
        .with_id(101)
        .with_fill(ShapeFill::new("2E7D32"))
        .with_text("Process");
    
    let box3 = Shape::new(ShapeType::RoundedRectangle, 6500000, 1800000, 1800000, 800000)
        .with_id(102)
        .with_fill(ShapeFill::new("C62828"))
        .with_text("End");
    
    // Straight connector with arrow
    let conn1 = Connector::straight(2300000, 2200000, 3500000, 2200000)
        .with_line(ConnectorLine::new("1565C0", 25400))
        .with_end_arrow(ArrowType::Triangle)
        .with_arrow_size(ArrowSize::Large);
    
    // Elbow connector with stealth arrow
    let conn2 = Connector::elbow(5300000, 2200000, 6500000, 2200000)
        .with_line(ConnectorLine::new("2E7D32", 38100).with_dash(LineDash::Dash))
        .with_end_arrow(ArrowType::Stealth)
        .with_arrow_size(ArrowSize::Medium);
    
    // Curved connector examples
    let box4 = Shape::new(ShapeType::Ellipse, 1000000, 3200000, 1500000, 800000)
        .with_id(103)
        .with_fill(ShapeFill::new("7B1FA2"))
        .with_text("A");
    
    let box5 = Shape::new(ShapeType::Ellipse, 4000000, 3200000, 1500000, 800000)
        .with_id(104)
        .with_fill(ShapeFill::new("00838F"))
        .with_text("B");
    
    let box6 = Shape::new(ShapeType::Ellipse, 7000000, 3200000, 1500000, 800000)
        .with_id(105)
        .with_fill(ShapeFill::new("EF6C00"))
        .with_text("C");
    
    // Curved connector with diamond arrow
    let conn3 = Connector::curved(2500000, 3600000, 4000000, 3600000)
        .with_line(ConnectorLine::new("7B1FA2", 19050).with_dash(LineDash::DashDot))
        .with_arrows(ArrowType::Oval, ArrowType::Diamond);
    
    // Dotted connector
    let conn4 = Connector::straight(5500000, 3600000, 7000000, 3600000)
        .with_line(ConnectorLine::new("00838F", 12700).with_dash(LineDash::Dot))
        .with_end_arrow(ArrowType::Open);
    
    slides.push(
        SlideContent::new("Styled Connectors - Types, Arrows, Dashes")
            .add_shape(box1)
            .add_shape(box2)
            .add_shape(box3)
            .add_shape(box4)
            .add_shape(box5)
            .add_shape(box6)
            .add_connector(conn1)
            .add_connector(conn2)
            .add_connector(conn3)
            .add_connector(conn4)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 13: Images
    // =========================================================================
    println!("🖼️  Slide 13: Image Placeholders");
    
    let img1 = Image::new("logo.png", 2500000, 1800000, "png")
        .position(500000, 1600000);
    let img2 = Image::new("photo.jpg", 2500000, 1800000, "jpg")
        .position(3500000, 1600000);
    let img3 = Image::new("diagram.png", 2000000, 1800000, "png")
        .position(6500000, 1600000);
    
    slides.push(
        SlideContent::new("Image Placeholders")
            .add_image(img1)
            .add_image(img2)
            .add_image(img3)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 11: Advanced Table with Borders & Alignment (NEW)
    // =========================================================================
    println!("📊 Slide 11: Advanced Table (borders, alignment, merged cells)");
    
    // Build advanced table using generator's TableBuilder with alignment
    let advanced_table = TableBuilder::new(vec![2000000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2024 Financial Report").bold().background_color("1F4E79").text_color("FFFFFF").align_center().font_size(14),
            TableCell::new("").background_color("1F4E79"),
            TableCell::new("").background_color("1F4E79"),
            TableCell::new("").background_color("1F4E79"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Category").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Revenue").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Expenses").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Profit").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Product Sales").text_color("000000").align_left(),
            TableCell::new("$1,250,000").text_color("2E7D32").align_right(),
            TableCell::new("$450,000").text_color("C62828").align_right(),
            TableCell::new("$800,000").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Services").text_color("000000").align_left(),
            TableCell::new("$890,000").text_color("2E7D32").align_right(),
            TableCell::new("$320,000").text_color("C62828").align_right(),
            TableCell::new("$570,000").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Total").bold().background_color("E7E6E6").text_color("000000").align_left(),
            TableCell::new("$2,140,000").bold().background_color("E7E6E6").text_color("000000").align_right(),
            TableCell::new("$770,000").bold().background_color("E7E6E6").text_color("000000").align_right(),
            TableCell::new("$1,370,000").bold().background_color("C6EFCE").text_color("006100").align_right(),
        ]))
        .position(300000, 1600000)
        .build();
    
    slides.push(
        SlideContent::new("Financial Report - Advanced Table")
            .table(advanced_table)
            .title_color("1F4E79")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 12: Comparison Matrix Table (NEW)
    // =========================================================================
    println!("📊 Slide 12: Comparison Matrix Table");
    
    let comparison_table = TableBuilder::new(vec![2000000, 1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Feature").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Basic").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Pro").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Enterprise").bold().background_color("4472C4").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Storage").text_color("000000"),
            TableCell::new("5 GB").text_color("000000"),
            TableCell::new("50 GB").text_color("000000"),
            TableCell::new("Unlimited").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Users").text_color("000000"),
            TableCell::new("1").text_color("000000"),
            TableCell::new("10").text_color("000000"),
            TableCell::new("Unlimited").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Support").text_color("000000"),
            TableCell::new("Email").text_color("000000"),
            TableCell::new("24/7 Chat").text_color("000000"),
            TableCell::new("Dedicated").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("API Access").text_color("000000"),
            TableCell::new("No").text_color("C62828"),
            TableCell::new("Yes").text_color("2E7D32"),
            TableCell::new("Yes + Priority").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Price/month").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$9").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$29").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$99").bold().background_color("F2F2F2").text_color("000000"),
        ]))
        .position(500000, 1600000)
        .build();
    
    slides.push(
        SlideContent::new("Pricing Comparison Matrix")
            .table(comparison_table)
            .title_color("4472C4")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 13: Process Flow with Shapes (NEW - SmartArt-like)
    // =========================================================================
    println!("🔷 Slide 13: Process Flow (SmartArt-style)");
    
    // Create process flow using shapes
    let step1 = Shape::new(ShapeType::RoundedRectangle, 300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("1. Research");
    let arrow1 = Shape::new(ShapeType::RightArrow, 1800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step2 = Shape::new(ShapeType::RoundedRectangle, 2300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("2. Design");
    let arrow2 = Shape::new(ShapeType::RightArrow, 3800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step3 = Shape::new(ShapeType::RoundedRectangle, 4300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("3. Develop");
    let arrow3 = Shape::new(ShapeType::RightArrow, 5800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step4 = Shape::new(ShapeType::RoundedRectangle, 6300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("5B9BD5"))
        .with_text("4. Deploy");
    
    slides.push(
        SlideContent::new("Development Process Flow")
            .add_shape(step1)
            .add_shape(arrow1)
            .add_shape(step2)
            .add_shape(arrow2)
            .add_shape(step3)
            .add_shape(arrow3)
            .add_shape(step4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 14: Organization Chart with Shapes (NEW)
    // =========================================================================
    println!("🔷 Slide 14: Organization Chart");
    
    // CEO at top
    let ceo = Shape::new(ShapeType::RoundedRectangle, 3500000, 1400000, 2000000, 600000)
        .with_fill(ShapeFill::new("1F4E79"))
        .with_text("CEO");
    
    // Vertical line from CEO
    let line1 = Shape::new(ShapeType::Rectangle, 4450000, 2000000, 100000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // Horizontal connector
    let hline = Shape::new(ShapeType::Rectangle, 1950000, 2400000, 5100000, 50000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // CTO, CFO, COO
    let cto = Shape::new(ShapeType::RoundedRectangle, 1000000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("CTO");
    let cfo = Shape::new(ShapeType::RoundedRectangle, 3600000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("CFO");
    let coo = Shape::new(ShapeType::RoundedRectangle, 6200000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("COO");
    
    // Vertical lines to departments
    let vline1 = Shape::new(ShapeType::Rectangle, 1850000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let vline2 = Shape::new(ShapeType::Rectangle, 4450000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let vline3 = Shape::new(ShapeType::Rectangle, 7050000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // Teams under CTO
    let eng = Shape::new(ShapeType::Rectangle, 500000, 3300000, 1200000, 400000)
        .with_fill(ShapeFill::new("BDD7EE"))
        .with_text("Engineering");
    let product = Shape::new(ShapeType::Rectangle, 1800000, 3300000, 1200000, 400000)
        .with_fill(ShapeFill::new("BDD7EE"))
        .with_text("Product");
    
    slides.push(
        SlideContent::new("Organization Structure")
            .add_shape(ceo)
            .add_shape(line1)
            .add_shape(hline)
            .add_shape(cto)
            .add_shape(cfo)
            .add_shape(coo)
            .add_shape(vline1)
            .add_shape(vline2)
            .add_shape(vline3)
            .add_shape(eng)
            .add_shape(product)
            .title_color("1F4E79")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 15: PDCA Cycle Diagram (NEW)
    // =========================================================================
    println!("🔷 Slide 15: PDCA Cycle Diagram");
    
    // Four quadrants for PDCA
    let plan = Shape::new(ShapeType::RoundedRectangle, 1500000, 1600000, 2500000, 1500000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("PLAN\n\nDefine goals\nand strategy");
    let do_box = Shape::new(ShapeType::RoundedRectangle, 4500000, 1600000, 2500000, 1500000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("DO\n\nImplement\nthe plan");
    let check = Shape::new(ShapeType::RoundedRectangle, 4500000, 3300000, 2500000, 1500000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("CHECK\n\nMeasure\nresults");
    let act = Shape::new(ShapeType::RoundedRectangle, 1500000, 3300000, 2500000, 1500000)
        .with_fill(ShapeFill::new("FFC000"))
        .with_text("ACT\n\nAdjust and\nimprove");
    
    // Arrows between quadrants
    let arr1 = Shape::new(ShapeType::RightArrow, 4100000, 2100000, 300000, 300000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr2 = Shape::new(ShapeType::DownArrow, 5600000, 3200000, 300000, 200000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr3 = Shape::new(ShapeType::LeftArrow, 4100000, 3800000, 300000, 300000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr4 = Shape::new(ShapeType::UpArrow, 2600000, 3200000, 300000, 200000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    slides.push(
        SlideContent::new("PDCA Continuous Improvement Cycle")
            .add_shape(plan)
            .add_shape(do_box)
            .add_shape(check)
            .add_shape(act)
            .add_shape(arr1)
            .add_shape(arr2)
            .add_shape(arr3)
            .add_shape(arr4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 16: Pyramid Diagram (Maslow's Hierarchy) (NEW)
    // =========================================================================
    println!("🔷 Slide 16: Pyramid Diagram");
    
    // Build pyramid from bottom to top
    let level5 = Shape::new(ShapeType::Trapezoid, 500000, 4000000, 8000000, 600000)
        .with_fill(ShapeFill::new("C00000"))
        .with_text("Physiological Needs - Food, Water, Shelter");
    let level4 = Shape::new(ShapeType::Trapezoid, 1000000, 3400000, 7000000, 600000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Safety Needs - Security, Stability");
    let level3 = Shape::new(ShapeType::Trapezoid, 1500000, 2800000, 6000000, 600000)
        .with_fill(ShapeFill::new("FFC000"))
        .with_text("Love & Belonging - Relationships");
    let level2 = Shape::new(ShapeType::Trapezoid, 2000000, 2200000, 5000000, 600000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Esteem - Achievement, Respect");
    let level1 = Shape::new(ShapeType::Triangle, 2500000, 1500000, 4000000, 700000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Self-Actualization");
    
    slides.push(
        SlideContent::new("Maslow's Hierarchy of Needs")
            .add_shape(level5)
            .add_shape(level4)
            .add_shape(level3)
            .add_shape(level2)
            .add_shape(level1)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 17: Venn Diagram (NEW)
    // =========================================================================
    println!("🔷 Slide 17: Venn Diagram");
    
    // Three overlapping circles
    let circle1 = Shape::new(ShapeType::Ellipse, 1500000, 1800000, 3000000, 3000000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Skills");
    let circle2 = Shape::new(ShapeType::Ellipse, 3500000, 1800000, 3000000, 3000000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Passion");
    let circle3 = Shape::new(ShapeType::Ellipse, 2500000, 3200000, 3000000, 3000000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Market Need");
    
    // Center label
    let center = Shape::new(ShapeType::Ellipse, 3200000, 2800000, 1600000, 800000)
        .with_fill(ShapeFill::new("FFFFFF"))
        .with_text("IKIGAI");
    
    slides.push(
        SlideContent::new("Finding Your Ikigai - Venn Diagram")
            .add_shape(circle1)
            .add_shape(circle2)
            .add_shape(circle3)
            .add_shape(center)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 18: Timeline/Roadmap (NEW)
    // =========================================================================
    println!("📊 Slide 18: Project Timeline");
    
    let timeline_table = TableBuilder::new(vec![1500000, 1500000, 1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q2 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q3 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q4 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q1 2025").bold().background_color("4472C4").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Research\n& Planning").background_color("BDD7EE").text_color("1F497D"),
            TableCell::new("Design\nPhase").background_color("BDD7EE").text_color("1F497D"),
            TableCell::new("Development\nSprint 1-3").background_color("C6EFCE").text_color("006100"),
            TableCell::new("Testing\n& QA").background_color("FCE4D6").text_color("C65911"),
            TableCell::new("Launch\n& Support").background_color("E2EFDA").text_color("375623"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("✓ Complete").bold().text_color("2E7D32"),
            TableCell::new("✓ Complete").bold().text_color("2E7D32"),
            TableCell::new("In Progress").text_color("ED7D31"),
            TableCell::new("Planned").text_color("7F7F7F"),
            TableCell::new("Planned").text_color("7F7F7F"),
        ]))
        .position(300000, 2000000)
        .build();
    
    slides.push(
        SlideContent::new("Project Roadmap 2024-2025")
            .table(timeline_table)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 19: Dashboard Summary (NEW)
    // =========================================================================
    println!("🔷 Slide 19: Dashboard with KPIs");
    
    // KPI boxes
    let kpi1 = Shape::new(ShapeType::RoundedRectangle, 300000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Revenue\n\n$2.14M\n+15% YoY");
    let kpi2 = Shape::new(ShapeType::RoundedRectangle, 2500000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Customers\n\n12,450\n+22% YoY");
    let kpi3 = Shape::new(ShapeType::RoundedRectangle, 4700000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("NPS Score\n\n72\n+8 pts");
    let kpi4 = Shape::new(ShapeType::RoundedRectangle, 6900000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("5B9BD5"))
        .with_text("Retention\n\n94%\n+3% YoY");
    
    // Status indicators
    let status1 = Shape::new(ShapeType::Ellipse, 1800000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    let status2 = Shape::new(ShapeType::Ellipse, 4000000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    let status3 = Shape::new(ShapeType::Ellipse, 6200000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("FFC000"));
    let status4 = Shape::new(ShapeType::Ellipse, 8400000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    
    slides.push(
        SlideContent::new("Executive Dashboard - Q1 2024")
            .add_shape(kpi1)
            .add_shape(kpi2)
            .add_shape(kpi3)
            .add_shape(kpi4)
            .add_shape(status1)
            .add_shape(status2)
            .add_shape(status3)
            .add_shape(status4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 20: Summary Slide (NEW)
    // =========================================================================
    println!("📝 Slide 20: Summary with Speaker Notes");
    
    slides.push(
        SlideContent::new("Summary & Next Steps")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Completed: Research, Design, Initial Development")
            .add_bullet("In Progress: Sprint 3 Development")
            .add_bullet("Next: QA Testing Phase (Q4 2024)")
            .add_bullet("Launch Target: Q1 2025")
            .add_bullet("Key Risks: Resource constraints, Timeline pressure")
            .content_size(24)
            .notes("Speaker Notes:\n\n1. Emphasize the progress made\n2. Highlight key achievements\n3. Address any concerns about timeline\n4. Open for Q&A")
    );

    // =========================================================================
    // SLIDE 21: Bullet Styles (NEW v0.2.1)
    // =========================================================================
    println!("🔢 Slide 21: Bullet Styles (NEW)");
    
    // Numbered list
    slides.push(
        SlideContent::new("Bullet Styles - Numbered List")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .with_bullet_style(BulletStyle::Number)
            .add_bullet("First numbered item")
            .add_bullet("Second numbered item")
            .add_bullet("Third numbered item")
            .add_bullet("Fourth numbered item")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 22: Lettered Lists (NEW v0.2.1)
    // =========================================================================
    println!("🔤 Slide 22: Lettered Lists (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Lettered Lists")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_lettered("Option A - First choice")
            .add_lettered("Option B - Second choice")
            .add_lettered("Option C - Third choice")
            .add_lettered("Option D - Fourth choice")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 23: Roman Numerals (NEW v0.2.1)
    // =========================================================================
    println!("🏛️ Slide 23: Roman Numerals (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Roman Numerals")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .with_bullet_style(BulletStyle::RomanUpper)
            .add_bullet("Chapter I - Introduction")
            .add_bullet("Chapter II - Background")
            .add_bullet("Chapter III - Methodology")
            .add_bullet("Chapter IV - Results")
            .add_bullet("Chapter V - Conclusion")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 24: Custom Bullets (NEW v0.2.1)
    // =========================================================================
    println!("⭐ Slide 24: Custom Bullets (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Custom Characters")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_styled_bullet("Star bullet point", BulletStyle::Custom('★'))
            .add_styled_bullet("Arrow bullet point", BulletStyle::Custom('→'))
            .add_styled_bullet("Check bullet point", BulletStyle::Custom('✓'))
            .add_styled_bullet("Diamond bullet point", BulletStyle::Custom('◆'))
            .add_styled_bullet("Heart bullet point", BulletStyle::Custom('♥'))
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 25: Sub-bullets / Hierarchy (NEW v0.2.1)
    // =========================================================================
    println!("📊 Slide 25: Sub-bullets Hierarchy (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Hierarchical Lists")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Main Topic 1")
            .add_sub_bullet("Supporting detail A")
            .add_sub_bullet("Supporting detail B")
            .add_bullet("Main Topic 2")
            .add_sub_bullet("Supporting detail C")
            .add_sub_bullet("Supporting detail D")
            .add_bullet("Main Topic 3")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 26: Text Enhancements (NEW v0.2.1)
    // =========================================================================
    println!("✏️ Slide 26: Text Enhancements (NEW)");
    
    // Use BulletPoint with formatting
    let strikethrough_bullet = BulletPoint::new("Strikethrough: This text is crossed out").strikethrough();
    let highlight_bullet = BulletPoint::new("Highlight: Yellow background for emphasis").highlight("FFFF00");
    let subscript_bullet = BulletPoint::new("Subscript: H₂O - for chemical formulas").subscript();
    let superscript_bullet = BulletPoint::new("Superscript: x² - for math expressions").superscript();
    let bold_colored = BulletPoint::new("Combined: Bold + Red color").bold().color("FF0000");
    
    let mut text_enhancements_slide = SlideContent::new("Text Enhancements - New Formatting")
        .layout(SlideLayout::TitleAndContent)
        .title_color("1F497D")
        .title_bold(true)
        .content_size(24);
    text_enhancements_slide.bullets.push(strikethrough_bullet);
    text_enhancements_slide.bullets.push(highlight_bullet);
    text_enhancements_slide.bullets.push(subscript_bullet);
    text_enhancements_slide.bullets.push(superscript_bullet);
    text_enhancements_slide.bullets.push(bold_colored);
    
    slides.push(text_enhancements_slide);

    // =========================================================================
    // SLIDE 27: Font Size Presets (NEW v0.2.1)
    // =========================================================================
    println!("🔤 Slide 27: Font Size Presets (NEW)");
    
    // Demonstrate different font sizes per bullet
    let large_bullet = BulletPoint::new(&format!("LARGE: {}pt - Extra large text", font_sizes::LARGE)).font_size(font_sizes::LARGE);
    let heading_bullet = BulletPoint::new(&format!("HEADING: {}pt - Section headers", font_sizes::HEADING)).font_size(font_sizes::HEADING);
    let body_bullet = BulletPoint::new(&format!("BODY: {}pt - Regular content", font_sizes::BODY)).font_size(font_sizes::BODY);
    let small_bullet = BulletPoint::new(&format!("SMALL: {}pt - Smaller text", font_sizes::SMALL)).font_size(font_sizes::SMALL);
    let caption_bullet = BulletPoint::new(&format!("CAPTION: {}pt - Captions and notes", font_sizes::CAPTION)).font_size(font_sizes::CAPTION);
    
    let mut font_size_slide = SlideContent::new("Font Size Presets - Each line different size")
        .layout(SlideLayout::TitleAndContent)
        .title_color("1F497D")
        .title_bold(true)
        .title_size(font_sizes::TITLE);
    font_size_slide.bullets.push(large_bullet);
    font_size_slide.bullets.push(heading_bullet);
    font_size_slide.bullets.push(body_bullet);
    font_size_slide.bullets.push(small_bullet);
    font_size_slide.bullets.push(caption_bullet);
    
    slides.push(font_size_slide);

    // =========================================================================
    // SLIDE 28: Theme Colors (NEW v0.2.1)
    // =========================================================================
    println!("🎨 Slide 28: Theme Colors (NEW)");
    
    // Create shapes with theme colors
    let corporate_shape = Shape::new(ShapeType::Rectangle, 500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::CORPORATE.primary))
        .with_text("Corporate");
    
    let modern_shape = Shape::new(ShapeType::Rectangle, 2500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::MODERN.primary))
        .with_text("Modern");
    
    let vibrant_shape = Shape::new(ShapeType::Rectangle, 4500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::VIBRANT.primary))
        .with_text("Vibrant");
    
    let dark_shape = Shape::new(ShapeType::Rectangle, 6500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::DARK.primary))
        .with_text("Dark");
    
    let nature_shape = Shape::new(ShapeType::Rectangle, 500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::NATURE.primary))
        .with_text("Nature");
    
    let tech_shape = Shape::new(ShapeType::Rectangle, 2500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::TECH.primary))
        .with_text("Tech");
    
    let carbon_shape = Shape::new(ShapeType::Rectangle, 4500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::CARBON.primary))
        .with_text("Carbon");
    
    slides.push(
        SlideContent::new("Theme Color Palettes")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_shape(corporate_shape)
            .add_shape(modern_shape)
            .add_shape(vibrant_shape)
            .add_shape(dark_shape)
            .add_shape(nature_shape)
            .add_shape(tech_shape)
            .add_shape(carbon_shape)
    );

    // =========================================================================
    // SLIDE 29: Material & Carbon Design Colors (NEW v0.2.1)
    // =========================================================================
    println!("🌈 Slide 29: Material & Carbon Colors (NEW)");
    
    // Material Design colors
    let material_red = Shape::new(ShapeType::Rectangle, 500000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_RED))
        .with_text("M-Red");
    
    let material_blue = Shape::new(ShapeType::Rectangle, 1900000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_BLUE))
        .with_text("M-Blue");
    
    let material_green = Shape::new(ShapeType::Rectangle, 3300000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_GREEN))
        .with_text("M-Green");
    
    let material_orange = Shape::new(ShapeType::Rectangle, 4700000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_ORANGE))
        .with_text("M-Orange");
    
    let material_purple = Shape::new(ShapeType::Rectangle, 6100000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_PURPLE))
        .with_text("M-Purple");
    
    // Carbon Design colors
    let carbon_blue = Shape::new(ShapeType::Rectangle, 500000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_BLUE_60))
        .with_text("C-Blue");
    
    let carbon_green = Shape::new(ShapeType::Rectangle, 1900000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_GREEN_50))
        .with_text("C-Green");
    
    let carbon_red = Shape::new(ShapeType::Rectangle, 3300000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_RED_60))
        .with_text("C-Red");
    
    let carbon_purple = Shape::new(ShapeType::Rectangle, 4700000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_PURPLE_60))
        .with_text("C-Purple");
    
    let carbon_gray = Shape::new(ShapeType::Rectangle, 6100000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_GRAY_100))
        .with_text("C-Gray");
    
    slides.push(
        SlideContent::new("Material & Carbon Design Colors")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_shape(material_red)
            .add_shape(material_blue)
            .add_shape(material_green)
            .add_shape(material_orange)
            .add_shape(material_purple)
            .add_shape(carbon_blue)
            .add_shape(carbon_green)
            .add_shape(carbon_red)
            .add_shape(carbon_purple)
            .add_shape(carbon_gray)
    );

    // =========================================================================
    // SLIDE 30: Image from Base64 (NEW v0.2.1)
    // =========================================================================
    println!("🖼️ Slide 30: Image from Base64 (NEW)");
    
    // 1x1 red PNG pixel in base64
    let _red_pixel_base64 = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8DwHwAFBQIAX8jx0gAAAABJRU5ErkJggg==";
    
    // Create image from base64 (demonstrating the API)
    let _base64_image = ImageBuilder::from_base64(_red_pixel_base64, 914400, 914400, "PNG")
        .position(4000000, 2500000)
        .build();
    
    slides.push(
        SlideContent::new("Image Loading - New Methods")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Image::new(path) - Load from file path")
            .add_bullet("Image::from_base64(data) - Load from base64 string")
            .add_bullet("Image::from_bytes(data) - Load from raw bytes")
            .add_bullet("ImageBuilder for fluent API configuration")
            .add_bullet("Built-in base64 decoder (no external deps)")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 31: Feature Summary (NEW v0.2.1)
    // =========================================================================
    println!("📋 Slide 31: v0.2.1 Feature Summary (NEW)");
    
    slides.push(
        SlideContent::new("New Features in v0.2.1")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_numbered("BulletStyle: Number, Letter, Roman, Custom")
            .add_numbered("TextFormat: Strikethrough, Highlight")
            .add_numbered("TextFormat: Subscript, Superscript")
            .add_numbered("Font size presets in prelude")
            .add_numbered("Image::from_base64 and from_bytes")
            .add_numbered("Theme color palettes (7 themes)")
            .add_numbered("Material & Carbon Design colors")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 32: Slide Show Settings - Comparison Table (REAL: embedded in presProps.xml)
    // =========================================================================
    println!("🎬 Slide 34: Slide Show Settings (Visual)");

    let show_speaker = SlideShowSettings::new().pen_color(PenColor::red());
    let show_kiosk = SlideShowSettings::kiosk();
    let _show_range = SlideShowSettings::new()
        .show_type(ShowType::Browsed)
        .slide_range(SlideRange::Range { start: 1, end: 10 })
        .without_animation(true);
    let _speaker_xml = show_speaker.to_xml();
    let _kiosk_xml = show_kiosk.to_xml();

    let show_table = TableBuilder::new(vec![2000000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Setting").bold().background_color("1F4E79").text_color("FFFFFF"),
            TableCell::new("Speaker").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Kiosk").bold().background_color("ED7D31").text_color("FFFFFF"),
            TableCell::new("Browsed").bold().background_color("70AD47").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Loop").bold().background_color("D6E4F0"),
            TableCell::new("No"), TableCell::new("Yes").bold().text_color("2E7D32"),
            TableCell::new("No"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Narration").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("No").text_color("C62828"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Animation").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("Yes"),
            TableCell::new("No").text_color("C62828"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Timings").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("Auto"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Slide Range").bold().background_color("D6E4F0"),
            TableCell::new("All"), TableCell::new("All"),
            TableCell::new("1-10"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Pen Color").bold().background_color("D6E4F0"),
            TableCell::new("Red").text_color("FF0000"),
            TableCell::new("Red").text_color("FF0000"),
            TableCell::new("Red").text_color("FF0000"),
        ]))
        .position(300000, 1600000)
        .build();

    // Mode icons
    let icon_speaker = Shape::new(ShapeType::RoundedRectangle, 300000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Speaker: Full control");
    let icon_kiosk = Shape::new(ShapeType::RoundedRectangle, 3100000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Kiosk: Auto-loop");
    let icon_browsed = Shape::new(ShapeType::RoundedRectangle, 5900000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Browsed: Scrollbar");

    slides.push(
        SlideContent::new("Slide Show Settings - Mode Comparison")
            .table(show_table)
            .add_shape(icon_speaker)
            .add_shape(icon_kiosk)
            .add_shape(icon_browsed)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 35: Print Settings - Visual Handout Grid
    // =========================================================================
    println!("🖨️  Slide 35: Print Settings & Handouts (Visual)");

    let print = PrintSettings::new()
        .print_what(PrintWhat::Handouts)
        .color_mode(PrintColorMode::Grayscale)
        .handout_layout(GenHandoutLayout::SlidesPerPage6)
        .frame_slides(true)
        .header("Q1 2025 Strategy Review")
        .footer("Confidential - Internal Use Only")
        .print_date(true)
        .print_page_numbers(true);
    let _prnpr_xml = print.to_prnpr_xml();
    let _handout_xml = print.to_handout_master_xml();

    // Visual: 6-slide handout grid (2 cols x 3 rows)
    let hdr = Shape::new(ShapeType::Rectangle, 300000, 1500000, 4200000, 300000)
        .with_fill(ShapeFill::new("E7E6E6"))
        .with_text("Q1 2025 Strategy Review");
    // Row 1
    let s1 = Shape::new(ShapeType::Rectangle, 400000, 2000000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 1");
    let s2 = Shape::new(ShapeType::Rectangle, 2500000, 2000000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 2");
    // Row 2
    let s3 = Shape::new(ShapeType::Rectangle, 400000, 3200000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 3");
    let s4 = Shape::new(ShapeType::Rectangle, 2500000, 3200000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 4");
    // Row 3
    let s5 = Shape::new(ShapeType::Rectangle, 400000, 4400000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 5");
    let s6 = Shape::new(ShapeType::Rectangle, 2500000, 4400000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 6");
    let ftr = Shape::new(ShapeType::Rectangle, 300000, 5600000, 4200000, 300000)
        .with_fill(ShapeFill::new("E7E6E6"))
        .with_text("Confidential - Internal Use Only");

    // Settings summary table on the right
    let print_table = TableBuilder::new(vec![1800000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Print Settings").bold().background_color("1F4E79").text_color("FFFFFF"),
            TableCell::new("").background_color("1F4E79"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Print What").bold().background_color("D6E4F0"),
            TableCell::new("Handouts"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Color Mode").bold().background_color("D6E4F0"),
            TableCell::new("Grayscale"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Layout").bold().background_color("D6E4F0"),
            TableCell::new("6 slides/page"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Frame Slides").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Date").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Page Numbers").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .position(5000000, 1800000)
        .build();

    slides.push(
        SlideContent::new("Print Handout - 6 Slides Per Page")
            .table(print_table)
            .add_shape(hdr)
            .add_shape(s1).add_shape(s2)
            .add_shape(s3).add_shape(s4)
            .add_shape(s5).add_shape(s6)
            .add_shape(ftr)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 36: Advanced Table Merging - Actual Merged Table
    // =========================================================================
    println!("📊 Slide 36: Advanced Table Merging (Visual)");

    // Use TableMergeMap to compute states, then build a visual table
    let mut merge_map = TableMergeMap::new(5, 4);
    merge_map.merge_cells(0, 0, 1, 4).unwrap(); // Title row spans all 4 cols
    merge_map.merge_cells(1, 0, 2, 1).unwrap(); // "Products" spans 2 rows
    merge_map.merge_cells(3, 0, 2, 1).unwrap(); // "Services" spans 2 rows

    // Show merge state labels
    let state_00 = merge_map.cell_state(0, 0); // Anchor gridSpan=4
    let state_01 = merge_map.cell_state(0, 1); // HMerge
    let state_10 = merge_map.cell_state(1, 0); // Anchor rowSpan=2
    let state_20 = merge_map.cell_state(2, 0); // VMerge
    println!("   ├── (0,0): {}", state_00.to_xml_attrs().trim());
    println!("   ├── (0,1): {}", state_01.to_xml_attrs().trim());
    println!("   ├── (1,0): {}", state_10.to_xml_attrs().trim());
    println!("   └── (2,0): {}", state_20.to_xml_attrs().trim());

    // Build the table with REAL merge attributes (gridSpan, rowSpan, hMerge, vMerge)
    let merge_table = TableBuilder::new(vec![1500000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2025 Revenue Report").bold().background_color("1F4E79").text_color("FFFFFF").grid_span(4),
            TableCell::new("").background_color("1F4E79").h_merge(),
            TableCell::new("").background_color("1F4E79").h_merge(),
            TableCell::new("").background_color("1F4E79").h_merge(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Products").bold().background_color("BDD7EE").text_color("1F497D").row_span(2),
            TableCell::new("Hardware").background_color("E2EFDA"),
            TableCell::new("$450,000").text_color("2E7D32").align_right(),
            TableCell::new("+12%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("").background_color("BDD7EE").v_merge(),
            TableCell::new("Software").background_color("E2EFDA"),
            TableCell::new("$680,000").text_color("2E7D32").align_right(),
            TableCell::new("+25%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Services").bold().background_color("FCE4D6").text_color("C65911").row_span(2),
            TableCell::new("Consulting").background_color("FFF2CC"),
            TableCell::new("$320,000").text_color("2E7D32").align_right(),
            TableCell::new("+8%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("").background_color("FCE4D6").v_merge(),
            TableCell::new("Support").background_color("FFF2CC"),
            TableCell::new("$190,000").text_color("2E7D32").align_right(),
            TableCell::new("+5%").bold().text_color("2E7D32").align_right(),
        ]))
        .position(300000, 1600000)
        .build();

    // Legend shapes
    let legend_anchor = Shape::new(ShapeType::RoundedRectangle, 300000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Anchor (gridSpan/rowSpan)");
    let legend_hmerge = Shape::new(ShapeType::RoundedRectangle, 2500000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("hMerge (col covered)");
    let legend_vmerge = Shape::new(ShapeType::RoundedRectangle, 4700000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("vMerge (row covered)");
    let legend_normal = Shape::new(ShapeType::RoundedRectangle, 6900000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"))
        .with_text("Normal (no merge)");

    slides.push(
        SlideContent::new("Advanced Table Merging - Merged Cells")
            .table(merge_table)
            .add_shape(legend_anchor)
            .add_shape(legend_hmerge)
            .add_shape(legend_vmerge)
            .add_shape(legend_normal)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // Build PresentationSettings with all advanced features
    // =========================================================================
    println!("\n⚙️  Building Presentation Settings...");

    // Slide show settings (embedded in presProps.xml as <p:showPr>)
    let show_settings = SlideShowSettings::new()
        .show_type(ShowType::Speaker)
        .pen_color(PenColor::red())
        .use_timings(true);
    println!("   ├── Slide Show: Speaker mode, red pen, timings enabled");
    println!("   │   └── XML: {} bytes", show_settings.to_xml().len());

    // Print settings (embedded in presProps.xml as <p:prnPr>)
    let print_settings = PrintSettings::new()
        .print_what(PrintWhat::Handouts)
        .color_mode(PrintColorMode::Grayscale)
        .handout_layout(GenHandoutLayout::SlidesPerPage6)
        .frame_slides(true)
        .header("Q1 2025 Strategy Review")
        .footer("Confidential - Internal Use Only")
        .print_date(true)
        .print_page_numbers(true);
    println!("   └── Print: Handouts, 6/page, grayscale, framed");
    println!("       └── XML: {} bytes", print_settings.to_prnpr_xml().len());

    let pres_settings = PresentationSettings::new()
        .slide_show(show_settings)
        .print(print_settings);
    println!("   All settings configured → presProps.xml");

    // =========================================================================
    // Generate PPTX with real integrated features
    // =========================================================================
    println!("\n📦 Generating PPTX with integrated features...");
    let pptx_data = create_pptx_with_settings(
        "PPTX-RS Element Showcase",
        slides.clone(),
        Some(pres_settings),
    )?;
    fs::write("comprehensive_demo.pptx", &pptx_data)?;
    println!("   ✓ Created comprehensive_demo.pptx ({} slides, {} bytes)", 
             slides.len(), pptx_data.len());

    // =========================================================================
    // Package Analysis - Demonstrate Reading
    // =========================================================================
    println!("\n📖 Package Analysis (Read Capability):");
    
    let package = Package::open("comprehensive_demo.pptx")?;
    let paths = package.part_paths();
    
    let slide_count = paths.iter()
        .filter(|p| p.starts_with("ppt/slides/slide") && p.ends_with(".xml"))
        .count();
    
    println!("   ├── Total parts: {}", package.part_count());
    println!("   ├── Slides: {}", slide_count);
    println!("   └── Package opened and analyzed successfully");

    // =========================================================================
    // NEW: Parts API Demonstration
    // =========================================================================
    println!("\n🧩 Parts API Demonstration:");
    
    // SlideLayoutPart - 11 layout types
    println!("   ┌── SlideLayoutPart (11 layout types):");
    let layouts = [
        LayoutType::Title,
        LayoutType::TitleAndContent,
        LayoutType::SectionHeader,
        LayoutType::TwoContent,
        LayoutType::Comparison,
        LayoutType::TitleOnly,
        LayoutType::Blank,
        LayoutType::ContentWithCaption,
        LayoutType::PictureWithCaption,
        LayoutType::TitleAndVerticalText,
        LayoutType::VerticalTitleAndText,
    ];
    for (i, layout_type) in layouts.iter().enumerate() {
        let layout = SlideLayoutPart::new(i + 1, *layout_type);
        if i < 3 {
            println!("   │   ├── {}: {} ({})", i + 1, layout_type.name(), layout.path());
        }
    }
    println!("   │   └── ... and {} more layout types", layouts.len() - 3);
    
    // SlideMasterPart
    println!("   ├── SlideMasterPart:");
    let mut master = SlideMasterPart::new(1);
    master.set_name("Custom Master");
    master.add_layout_rel_id("rId2");
    master.add_layout_rel_id("rId3");
    println!("   │   ├── Name: {}", master.name());
    println!("   │   ├── Path: {}", master.path());
    println!("   │   └── Layouts: {} linked", master.layout_rel_ids().len());
    
    // ThemePart - Colors and Fonts
    println!("   ├── ThemePart (colors & fonts):");
    let mut theme = ThemePart::new(1);
    theme.set_name("Corporate Theme");
    theme.set_major_font("Arial");
    theme.set_minor_font("Calibri");
    theme.set_color("accent1", "FF5733");
    theme.set_color("accent2", "33FF57");
    let theme_xml = theme.to_xml()?;
    println!("   │   ├── Name: {}", theme.name());
    println!("   │   ├── Major Font: Arial");
    println!("   │   ├── Minor Font: Calibri");
    println!("   │   └── XML size: {} bytes", theme_xml.len());
    
    // NotesSlidePart - Speaker notes
    println!("   ├── NotesSlidePart (speaker notes):");
    let notes = NotesSlidePart::with_text(1, "Remember to:\n- Introduce yourself\n- Explain the agenda\n- Ask for questions");
    let notes_xml = notes.to_xml()?;
    println!("   │   ├── Path: {}", notes.path());
    println!("   │   ├── Text: \"{}...\"", &notes.notes_text()[..20.min(notes.notes_text().len())]);
    println!("   │   └── XML size: {} bytes", notes_xml.len());
    
    // AppPropertiesPart - Application metadata
    println!("   ├── AppPropertiesPart (metadata):");
    let mut app_props = AppPropertiesPart::new();
    app_props.set_company("Acme Corporation");
    app_props.set_slides(slides.len() as u32);
    let app_xml = app_props.to_xml()?;
    println!("   │   ├── Company: Acme Corporation");
    println!("   │   ├── Slides: {}", slides.len());
    println!("   │   └── XML size: {} bytes", app_xml.len());
    
    // MediaPart - Video/Audio formats
    println!("   ├── MediaPart (10 media formats):");
    println!("   │   ├── Video: mp4, webm, avi, wmv, mov");
    println!("   │   ├── Audio: mp3, wav, wma, m4a, ogg");
    let sample_media = MediaPart::new(1, MediaFormat::Mp4, vec![0; 100]);
    println!("   │   └── Sample: {} ({})", sample_media.path(), sample_media.format().mime_type());
    
    // TablePart - Table with formatting
    println!("   ├── TablePart (cell formatting):");
    let table_part = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Header 1").bold().background("4472C4"),
            TableCellPart::new("Header 2").bold().background("4472C4"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Data 1").color("333333"),
            TableCellPart::new("Data 2").italic(),
        ]))
        .position(EMU_PER_INCH, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 6, EMU_PER_INCH * 2);
    let table_xml = table_part.to_slide_xml(10);
    println!("   │   ├── Rows: {}", table_part.rows.len());
    println!("   │   ├── Features: bold, italic, colors, backgrounds");
    println!("   │   └── XML size: {} bytes", table_xml.len());
    
    // ContentTypesPart
    println!("   └── ContentTypesPart:");
    let mut content_types = ContentTypesPart::new();
    content_types.add_presentation();
    content_types.add_slide(1);
    content_types.add_slide_layout(1);
    content_types.add_slide_master(1);
    content_types.add_theme(1);
    content_types.add_core_properties();
    content_types.add_app_properties();
    let ct_xml = content_types.to_xml()?;
    println!("       ├── Path: {}", content_types.path());
    println!("       └── XML size: {} bytes", ct_xml.len());

    // =========================================================================
    // NEW: Elements API Demonstration
    // =========================================================================
    println!("\n🎨 Elements API Demonstration:");
    
    // Color types
    println!("   ┌── Color Types:");
    let rgb = RgbColor::new(255, 87, 51);
    let rgb_hex = RgbColor::from_hex("#4472C4").unwrap();
    let scheme = SchemeColor::Accent1;
    let color = Color::rgb(100, 149, 237);
    println!("   │   ├── RgbColor::new(255, 87, 51) → {}", rgb.to_hex());
    println!("   │   ├── RgbColor::from_hex(\"#4472C4\") → {}", rgb_hex.to_hex());
    println!("   │   ├── SchemeColor::Accent1 → {}", scheme.as_str());
    println!("   │   └── Color::rgb(100, 149, 237) → XML: {}", color.to_xml().chars().take(30).collect::<String>());
    
    // Position and Size
    println!("   ├── Position & Size (EMU units):");
    let pos = Position::from_inches(1.0, 2.0);
    let size = Size::from_inches(4.0, 3.0);
    println!("   │   ├── Position::from_inches(1.0, 2.0) → x={}, y={}", pos.x, pos.y);
    println!("   │   ├── Size::from_inches(4.0, 3.0) → w={}, h={}", size.width, size.height);
    println!("   │   └── EMU_PER_INCH = {}", EMU_PER_INCH);
    
    // Transform
    println!("   └── Transform (position + size + rotation):");
    let transform = Transform::from_inches(1.0, 1.5, 3.0, 2.0).with_rotation(45.0);
    let transform_xml = transform.to_xml();
    println!("       ├── Transform::from_inches(1.0, 1.5, 3.0, 2.0)");
    println!("       ├── .with_rotation(45.0)");
    println!("       └── XML: {}...", &transform_xml[..50.min(transform_xml.len())]);

    // =========================================================================
    // NEW: Advanced Features Demonstration
    // =========================================================================
    println!("\n🚀 Advanced Features Demonstration:");

    // -------------------------------------------------------------------------
    // Complex Table Examples
    // -------------------------------------------------------------------------
    println!("   ┌── Complex Table Examples:");
    
    // Example 1: Financial Report Table
    println!("   │   ┌── Financial Report Table (5x4 with formatting):");
    let financial_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Q1 2024 Financial Summary")
                .col_span(4)
                .bold()
                .center()
                .background("1F4E79")
                .color("FFFFFF")
                .font_size(14)
                .font("Arial Black"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Category").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Revenue").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Expenses").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Profit").bold().center().background("2E75B6").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Product Sales").align(HorizontalAlign::Left),
            TableCellPart::new("$1,250,000").align(HorizontalAlign::Right).color("2E7D32"),
            TableCellPart::new("$450,000").align(HorizontalAlign::Right).color("C62828"),
            TableCellPart::new("$800,000").align(HorizontalAlign::Right).bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Services").align(HorizontalAlign::Left),
            TableCellPart::new("$890,000").align(HorizontalAlign::Right).color("2E7D32"),
            TableCellPart::new("$320,000").align(HorizontalAlign::Right).color("C62828"),
            TableCellPart::new("$570,000").align(HorizontalAlign::Right).bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Total").bold().background("E7E6E6"),
            TableCellPart::new("$2,140,000").bold().align(HorizontalAlign::Right).background("E7E6E6"),
            TableCellPart::new("$770,000").bold().align(HorizontalAlign::Right).background("E7E6E6"),
            TableCellPart::new("$1,370,000").bold().align(HorizontalAlign::Right).background("C6EFCE").color("006100"),
        ]))
        .position(EMU_PER_INCH / 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 8, EMU_PER_INCH * 3);
    let fin_xml = financial_table.to_slide_xml(100);
    println!("   │   │   ├── Merged header spanning 4 columns");
    println!("   │   │   ├── Color-coded values (green=positive, red=negative)");
    println!("   │   │   ├── Custom fonts and sizes");
    println!("   │   │   └── XML: {} bytes", fin_xml.len());

    // Example 2: Comparison Matrix
    println!("   │   ├── Comparison Matrix (features vs products):");
    let matrix_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Feature").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Basic").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Pro").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Enterprise").bold().center().background("4472C4").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Storage").align(HorizontalAlign::Left),
            TableCellPart::new("5 GB").center(),
            TableCellPart::new("50 GB").center(),
            TableCellPart::new("Unlimited").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Users").align(HorizontalAlign::Left),
            TableCellPart::new("1").center(),
            TableCellPart::new("10").center(),
            TableCellPart::new("Unlimited").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Support").align(HorizontalAlign::Left),
            TableCellPart::new("Email").center(),
            TableCellPart::new("24/7 Chat").center(),
            TableCellPart::new("Dedicated").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Price/mo").bold().background("F2F2F2"),
            TableCellPart::new("$9").center().bold().background("F2F2F2"),
            TableCellPart::new("$29").center().bold().background("F2F2F2"),
            TableCellPart::new("$99").center().bold().background("F2F2F2"),
        ]));
    println!("   │   │   └── 5x4 matrix with alternating styles");

    // Example 3: Schedule/Timeline Table
    println!("   │   └── Schedule Table (with row spans):");
    let schedule_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Time").bold().center().background("70AD47").color("FFFFFF"),
            TableCellPart::new("Monday").bold().center().background("70AD47").color("FFFFFF"),
            TableCellPart::new("Tuesday").bold().center().background("70AD47").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("9:00 AM").center().background("E2EFDA"),
            TableCellPart::new("Team Standup").center().row_span(2).valign(VerticalAlign::Middle).background("BDD7EE"),
            TableCellPart::new("Code Review").center(),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("10:00 AM").center().background("E2EFDA"),
            TableCellPart::merged(),
            TableCellPart::new("Sprint Planning").center().background("FCE4D6"),
        ]));
    println!("   │       └── Row spans for multi-hour events");

    // -------------------------------------------------------------------------
    // Complex Animation Sequences
    // -------------------------------------------------------------------------
    println!("   ├── Complex Animation Sequences:");
    
    // Sequence 1: Title entrance with staggered content
    println!("   │   ┌── Staggered Entrance Sequence:");
    let title_anim = Animation::new(2, AnimationEffect::Fade)
        .trigger(AnimationTrigger::OnClick)
        .duration(500);
    let content1 = Animation::new(3, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(200);
    let content2 = Animation::new(4, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(100);
    let content3 = Animation::new(5, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(100);
    let staggered = SlideAnimations::new()
        .add(title_anim)
        .add(content1)
        .add(content2)
        .add(content3)
        .transition(SlideTransition::new(TransitionEffect::Push).direction(AnimationDirection::Left).duration(750));
    let staggered_xml = staggered.to_timing_xml()?;
    println!("   │   │   ├── Title: Fade on click");
    println!("   │   │   ├── Content 1-3: FlyIn with 100ms stagger");
    println!("   │   │   ├── Transition: Push from left (750ms)");
    println!("   │   │   └── XML: {} bytes", staggered_xml.len());

    // Sequence 2: Emphasis and exit
    println!("   │   ├── Emphasis + Exit Sequence:");
    let emphasis = Animation::new(6, AnimationEffect::Pulse)
        .trigger(AnimationTrigger::OnClick)
        .duration(1000)
        .repeat(3);
    let exit = Animation::new(6, AnimationEffect::FadeOut)
        .trigger(AnimationTrigger::AfterPrevious)
        .duration(500);
    let emphasis_seq = SlideAnimations::new()
        .add(emphasis)
        .add(exit);
    println!("   │   │   ├── Pulse 3x on click, then fade out");
    println!("   │   │   └── Same shape, sequential effects");

    // Sequence 3: Motion path
    println!("   │   └── Motion Path Animation:");
    let motion = Animation::new(7, AnimationEffect::Lines)
        .trigger(AnimationTrigger::OnClick)
        .duration(2000);
    println!("   │       └── Custom path: Lines, Arcs, Turns, Loops");

    // -------------------------------------------------------------------------
    // SmartArt Combinations
    // -------------------------------------------------------------------------
    println!("   ├── SmartArt Layout Examples:");
    
    // Process flow
    println!("   │   ┌── Process Flow (5 steps):");
    let process = SmartArtPart::new(1, SmartArtLayout::BasicProcess)
        .add_items(vec!["Research", "Design", "Develop", "Test", "Deploy"])
        .position(EMU_PER_INCH / 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 8, EMU_PER_INCH * 2);
    println!("   │   │   └── {} nodes in horizontal flow", process.nodes().len());

    // Organization chart
    println!("   │   ├── Organization Chart:");
    let org = SmartArtPart::new(2, SmartArtLayout::OrgChart)
        .add_items(vec!["CEO", "CTO", "CFO", "VP Engineering", "VP Sales"]);
    println!("   │   │   └── Hierarchical structure with {} positions", org.nodes().len());

    // Cycle diagram
    println!("   │   ├── Cycle Diagram:");
    let cycle = SmartArtPart::new(3, SmartArtLayout::BasicCycle)
        .add_items(vec!["Plan", "Do", "Check", "Act"]);
    println!("   │   │   └── PDCA cycle with {} phases", cycle.nodes().len());

    // Venn diagram
    println!("   │   ├── Venn Diagram:");
    let venn = SmartArtPart::new(4, SmartArtLayout::BasicVenn)
        .add_items(vec!["Skills", "Passion", "Market Need"]);
    println!("   │   │   └── 3-circle Venn for Ikigai concept");

    // Pyramid
    println!("   │   └── Pyramid:");
    let pyramid = SmartArtPart::new(5, SmartArtLayout::BasicPyramid)
        .add_items(vec!["Self-Actualization", "Esteem", "Love/Belonging", "Safety", "Physiological"]);
    println!("   │       └── Maslow's hierarchy with {} levels", pyramid.nodes().len());

    // -------------------------------------------------------------------------
    // 3D Model Configurations
    // -------------------------------------------------------------------------
    println!("   ├── 3D Model Configurations:");
    
    // Product showcase
    println!("   │   ┌── Product Showcase:");
    let product_3d = Model3DPart::new(1, Model3DFormat::Glb, vec![0; 100])
        .camera(CameraPreset::IsometricTopUp)
        .rotation(0.0, 45.0, 0.0)
        .zoom(1.2)
        .position(EMU_PER_INCH * 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 4, EMU_PER_INCH * 4);
    println!("   │   │   ├── Camera: Isometric top-up view");
    println!("   │   │   ├── Rotation: 45° Y-axis for best angle");
    println!("   │   │   └── Zoom: 1.2x for detail");

    // Architectural model
    println!("   │   ├── Architectural Model:");
    let arch_3d = Model3DPart::new(2, Model3DFormat::Gltf, vec![0; 100])
        .camera(CameraPreset::Front)
        .rotation(15.0, -30.0, 0.0)
        .ambient_light("FFFFCC");
    println!("   │   │   ├── Camera: Front view with tilt");
    println!("   │   │   └── Ambient: Warm lighting (FFFFCC)");

    // Technical diagram
    println!("   │   └── Technical Diagram:");
    let tech_3d = Model3DPart::new(3, Model3DFormat::Obj, vec![0; 100])
        .camera(CameraPreset::IsometricOffAxis1Top)
        .rotation(0.0, 0.0, 0.0);
    println!("   │       └── Camera: Off-axis isometric for exploded view");

    // -------------------------------------------------------------------------
    // Theme + Master + Layout Combination
    // -------------------------------------------------------------------------
    println!("   ├── Theme + Master + Layout Integration:");
    
    // Corporate theme
    let mut corp_theme = ThemePart::new(1);
    corp_theme.set_name("Corporate Blue");
    corp_theme.set_major_font("Segoe UI");
    corp_theme.set_minor_font("Segoe UI Light");
    corp_theme.set_color("dk1", "000000");
    corp_theme.set_color("lt1", "FFFFFF");
    corp_theme.set_color("dk2", "1F497D");
    corp_theme.set_color("lt2", "EEECE1");
    corp_theme.set_color("accent1", "4472C4");
    corp_theme.set_color("accent2", "ED7D31");
    corp_theme.set_color("accent3", "A5A5A5");
    corp_theme.set_color("accent4", "FFC000");
    corp_theme.set_color("accent5", "5B9BD5");
    corp_theme.set_color("accent6", "70AD47");
    let theme_xml = corp_theme.to_xml()?;
    println!("   │   ├── Theme: Corporate Blue");
    println!("   │   │   ├── Fonts: Segoe UI / Segoe UI Light");
    println!("   │   │   ├── 12 color slots defined");
    println!("   │   │   └── XML: {} bytes", theme_xml.len());

    // Master with multiple layouts
    let mut corp_master = SlideMasterPart::new(1);
    corp_master.set_name("Corporate Master");
    corp_master.add_layout_rel_id("rId2"); // Title
    corp_master.add_layout_rel_id("rId3"); // Title + Content
    corp_master.add_layout_rel_id("rId4"); // Section Header
    corp_master.add_layout_rel_id("rId5"); // Two Content
    corp_master.add_layout_rel_id("rId6"); // Comparison
    corp_master.add_layout_rel_id("rId7"); // Title Only
    corp_master.add_layout_rel_id("rId8"); // Blank
    println!("   │   └── Master: {} with {} layouts linked", corp_master.name(), corp_master.layout_rel_ids().len());

    // -------------------------------------------------------------------------
    // VBA + Custom XML Integration
    // -------------------------------------------------------------------------
    println!("   ├── VBA + Custom XML Integration:");
    
    // VBA with multiple modules
    let vba_project = VbaProjectPart::new()
        .add_module(VbaModule::new("AutoRun", r#"
Sub Auto_Open()
    MsgBox "Welcome to the presentation!"
End Sub

Sub NavigateToSlide(slideNum As Integer)
    SlideShowWindows(1).View.GotoSlide slideNum
End Sub
"#))
        .add_module(VbaModule::new("DataHelpers", r#"
Function GetCustomData(key As String) As String
    ' Read from Custom XML part
    GetCustomData = ActivePresentation.CustomXMLParts(1).SelectSingleNode("//" & key).Text
End Function
"#))
        .add_module(VbaModule::class("SlideController", r#"
Private currentSlide As Integer

Public Sub NextSlide()
    currentSlide = currentSlide + 1
    NavigateToSlide currentSlide
End Sub
"#));
    println!("   │   ├── VBA Project:");
    println!("   │   │   ├── AutoRun: Auto_Open, NavigateToSlide");
    println!("   │   │   ├── DataHelpers: GetCustomData (reads Custom XML)");
    println!("   │   │   └── SlideController: Class for navigation");

    // Custom XML with structured data
    let app_config = CustomXmlPart::new(1, "presentationConfig")
        .namespace("http://company.com/pptx/config")
        .property("version", "2.1.0")
        .property("author", "Demo User")
        .property("department", "Engineering")
        .property("confidentiality", "Internal")
        .property("lastModified", "2024-01-15T10:30:00Z");
    let config_xml = app_config.to_xml()?;
    println!("   │   └── Custom XML:");
    println!("   │       ├── Namespace: http://company.com/pptx/config");
    println!("   │       ├── Properties: version, author, department, etc.");
    println!("   │       └── XML: {} bytes", config_xml.len());

    // -------------------------------------------------------------------------
    // Embedded Fonts with Variants
    // -------------------------------------------------------------------------
    println!("   ├── Embedded Font Collection:");
    let mut font_collection = EmbeddedFontCollection::new();
    font_collection.add("Corporate Sans", vec![0; 1000]);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::Bold);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::Italic);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::BoldItalic);
    font_collection.add("Code Mono", vec![0; 800]);
    let fonts_xml = font_collection.to_xml();
    println!("   │   ├── Corporate Sans: Regular, Bold, Italic, BoldItalic");
    println!("   │   ├── Code Mono: Regular");
    println!("   │   ├── Total: {} font files", font_collection.len());
    println!("   │   └── XML: {} bytes", fonts_xml.len());

    // -------------------------------------------------------------------------
    // Handout with Full Configuration
    // -------------------------------------------------------------------------
    println!("   └── Handout Master Configuration:");
    let handout = HandoutMasterPart::new()
        .layout(HandoutLayout::SlidesPerPage6)
        .header("Q1 2024 Strategy Review")
        .footer("Confidential - Internal Use Only");
    let handout_xml = handout.to_xml()?;
    println!("       ├── Layout: 6 slides per page");
    println!("       ├── Header: Q1 2024 Strategy Review");
    println!("       ├── Footer: Confidential - Internal Use Only");
    println!("       └── XML: {} bytes", handout_xml.len());

    // =========================================================================
    // Summary
    // =========================================================================
    println!("\n╔══════════════════════════════════════════════════════════════╗");
    println!("║                    Element Coverage Summary                   ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  LAYOUTS (6 types):                                          ║");
    println!("║    ✓ CenteredTitle    ✓ TitleOnly      ✓ TitleAndContent     ║");
    println!("║    ✓ TitleAndBigContent  ✓ TwoColumn   ✓ Blank               ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  TEXT FORMATTING:                                            ║");
    println!("║    ✓ Bold            ✓ Italic         ✓ Underline            ║");
    println!("║    ✓ Font Size       ✓ Font Color     ✓ Title/Content styles ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  TABLES:                                                     ║");
    println!("║    ✓ Multiple rows/columns  ✓ Bold cells  ✓ Background colors║");
    println!("║    ✓ Header styling         ✓ Position control               ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  CHARTS:                                                     ║");
    println!("║    ✓ Bar Chart       ✓ Line Chart     ✓ Pie Chart            ║");
    println!("║    ✓ Multiple series ✓ Categories                            ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  SHAPES:                                                     ║");
    println!("║    ✓ Rectangle       ✓ Ellipse        ✓ RoundedRectangle     ║");
    println!("║    ✓ Triangle        ✓ Diamond        ✓ Color fills          ║");
    println!("║    ✓ Gradient fills  ✓ Transparency   ✓ Text in shapes       ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  CONNECTORS (NEW):                                           ║");
    println!("║    ✓ Straight        ✓ Elbow          ✓ Curved               ║");
    println!("║    ✓ Arrow types     ✓ Dash styles    ✓ Line colors/widths   ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  IMAGES:                                                     ║");
    println!("║    ✓ Image placeholders  ✓ Position   ✓ Dimensions           ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  PACKAGE:                                                    ║");
    println!("║    ✓ Create PPTX     ✓ Read PPTX      ✓ Analyze contents     ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  PARTS API (NEW):                                            ║");
    println!("║    ✓ SlideLayoutPart (11 types)  ✓ SlideMasterPart           ║");
    println!("║    ✓ ThemePart (colors/fonts)    ✓ NotesSlidePart            ║");
    println!("║    ✓ AppPropertiesPart           ✓ MediaPart (10 formats)    ║");
    println!("║    ✓ TablePart (cell formatting) ✓ ContentTypesPart          ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  ELEMENTS API:                                               ║");
    println!("║    ✓ RgbColor        ✓ SchemeColor    ✓ Color enum           ║");
    println!("║    ✓ Position        ✓ Size           ✓ Transform            ║");
    println!("║    ✓ EMU conversions (inches, cm, mm, pt)                    ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  ADVANCED FEATURES (NEW):                                    ║");
    println!("║    ✓ Animation (50+ effects)  ✓ Transitions (27 types)       ║");
    println!("║    ✓ SmartArt (25 layouts)    ✓ 3D Models (GLB/GLTF/OBJ)     ║");
    println!("║    ✓ VBA Macros (.pptm)       ✓ Embedded Fonts               ║");
    println!("║    ✓ Custom XML               ✓ Handout Master               ║");
    println!("║    ✓ Table borders/alignment  ✓ Merged cells                 ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  Output: comprehensive_demo.pptx ({} slides, {} KB)         ║", 
             slides.len(), pptx_data.len() / 1024);
    println!("╚══════════════════════════════════════════════════════════════╝");

    Ok(())
}

pub fn with_shapes(self, shapes: Vec<Shape>) -> Self

Add multiple shapes to the slide

pub fn add_image(self, image: Image) -> Self

Add an image to the slide

Examples found in repository

examples/new_features_demo.rs (line 112)

fn main() -> std::result::Result<(), Box<dyn std::error::Error>> {
    // Create output directory
    std::fs::create_dir_all("examples/output")?;

    // 1. Bullet Styles Demo
    println!("Creating bullet styles demo...");
    
    // Numbered list slide
    let numbered_slide = SlideContent::new("Numbered List")
        .with_bullet_style(BulletStyle::Number)
        .add_bullet("First step")
        .add_bullet("Second step")
        .add_bullet("Third step")
        .add_bullet("Fourth step");
    
    // Lettered list slide
    let lettered_slide = SlideContent::new("Lettered List")
        .add_lettered("Option A")
        .add_lettered("Option B")
        .add_lettered("Option C");
    
    // Roman numerals slide
    let roman_slide = SlideContent::new("Roman Numerals")
        .with_bullet_style(BulletStyle::RomanUpper)
        .add_bullet("Chapter I")
        .add_bullet("Chapter II")
        .add_bullet("Chapter III");
    
    // Mixed bullets with sub-bullets
    let mixed_slide = SlideContent::new("Mixed Bullets")
        .add_bullet("Main point")
        .add_sub_bullet("Supporting detail 1")
        .add_sub_bullet("Supporting detail 2")
        .add_bullet("Another main point")
        .add_sub_bullet("More details");
    
    // Custom bullet slide
    let custom_slide = SlideContent::new("Custom Bullets")
        .add_styled_bullet("Star bullet", BulletStyle::Custom('★'))
        .add_styled_bullet("Arrow bullet", BulletStyle::Custom('→'))
        .add_styled_bullet("Check bullet", BulletStyle::Custom('✓'))
        .add_styled_bullet("Diamond bullet", BulletStyle::Custom('◆'));
    
    let bullet_demo = pptx!("Bullet Styles Demo")
        .title_slide("Bullet Styles - Demonstrating various list formats")
        .content_slide(numbered_slide)
        .content_slide(lettered_slide)
        .content_slide(roman_slide)
        .content_slide(mixed_slide)
        .content_slide(custom_slide)
        .build()?;
    
    std::fs::write("examples/output/bullet_styles.pptx", bullet_demo)?;
    println!("  ✓ Created examples/output/bullet_styles.pptx");

    // 2. Text Formatting Demo
    println!("Creating text formatting demo...");
    
    let text_demo = pptx!("Text Formatting Demo")
        .title_slide("Text Formatting - Strikethrough, highlight, subscript, superscript")
        .slide("Text Styles", &[
            "Normal text for comparison",
            "This demonstrates various formatting options",
            "Use TextFormat for rich text styling",
        ])
        .slide("Font Size Presets", &[
            &format!("TITLE: {}pt - For main titles", font_sizes::TITLE),
            &format!("SUBTITLE: {}pt - For subtitles", font_sizes::SUBTITLE),
            &format!("HEADING: {}pt - For section headers", font_sizes::HEADING),
            &format!("BODY: {}pt - For regular content", font_sizes::BODY),
            &format!("SMALL: {}pt - For smaller text", font_sizes::SMALL),
            &format!("CAPTION: {}pt - For captions", font_sizes::CAPTION),
        ])
        .slide("Text Effects", &[
            "Strikethrough: For deleted text",
            "Highlight: For emphasized text",
            "Subscript: H₂O style formatting",
            "Superscript: x² style formatting",
        ])
        .build()?;
    
    std::fs::write("examples/output/text_formatting.pptx", text_demo)?;
    println!("  ✓ Created examples/output/text_formatting.pptx");

    // 3. Image from Base64 Demo
    println!("Creating image demo...");
    
    // 1x1 red PNG pixel in base64
    let red_pixel_base64 = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8DwHwAFBQIAX8jx0gAAAABJRU5ErkJggg==";
    
    // Create image from base64
    let img = ImageBuilder::from_base64(red_pixel_base64, inches(2.0), inches(2.0), "PNG")
        .position(inches(4.0), inches(3.0))
        .build();
    
    let image_slide = SlideContent::new("Image from Base64")
        .add_bullet("Images can be loaded from base64 encoded data")
        .add_bullet("Useful for embedding images without file access")
        .add_bullet("Supports PNG, JPEG, GIF formats")
        .add_image(img);
    
    let image_demo = pptx!("Image Features Demo")
        .title_slide("Image Features - Loading images from various sources")
        .content_slide(image_slide)
        .slide("Image Sources", &[
            "Image::new(filename) - From file path",
            "Image::from_base64(data) - From base64 string",
            "Image::from_bytes(data) - From raw bytes",
            "ImageBuilder for fluent API",
        ])
        .build()?;
    
    std::fs::write("examples/output/image_features.pptx", image_demo)?;
    println!("  ✓ Created examples/output/image_features.pptx");

    // 4. Theme Colors Demo
    println!("Creating themes demo...");
    
    let all_themes = themes::all();
    let theme_info: Vec<String> = all_themes.iter().map(|t| {
        format!("{}: Primary={}, Accent={}", t.name, t.primary, t.accent)
    }).collect();
    
    let themes_demo = pptx!("Theme Colors Demo")
        .title_slide("Theme Colors - Predefined color palettes")
        .slide("Available Themes", &theme_info.iter().map(|s| s.as_str()).collect::<Vec<_>>())
        .slide("Color Constants", &[
            &format!("Material Red: {}", colors::MATERIAL_RED),
            &format!("Material Blue: {}", colors::MATERIAL_BLUE),
            &format!("Material Green: {}", colors::MATERIAL_GREEN),
            &format!("Carbon Blue 60: {}", colors::CARBON_BLUE_60),
            &format!("Carbon Gray 100: {}", colors::CARBON_GRAY_100),
        ])
        .build()?;
    
    std::fs::write("examples/output/themes_demo.pptx", themes_demo)?;
    println!("  ✓ Created examples/output/themes_demo.pptx");

    // 5. Complete Feature Showcase
    println!("Creating complete feature showcase...");
    
    let showcase = pptx!("ppt-rs v0.2.1 Features")
        .title_slide("New Features in ppt-rs v0.2.1")
        .slide("Bullet Formatting", &[
            "BulletStyle::Number - 1, 2, 3...",
            "BulletStyle::LetterLower/Upper - a, b, c / A, B, C",
            "BulletStyle::RomanLower/Upper - i, ii, iii / I, II, III",
            "BulletStyle::Custom(char) - Any custom character",
            "Sub-bullets with indentation",
        ])
        .slide("Text Enhancements", &[
            "TextFormat::strikethrough() - Strike through text",
            "TextFormat::highlight(color) - Background highlight",
            "TextFormat::subscript() - H₂O style",
            "TextFormat::superscript() - x² style",
            "font_sizes module with presets",
        ])
        .slide("Image Loading", &[
            "Image::from_base64() - Base64 encoded images",
            "Image::from_bytes() - Raw byte arrays",
            "ImageSource enum for flexible handling",
            "Built-in base64 decoder",
        ])
        .slide("Templates", &[
            "templates::business_proposal()",
            "templates::status_report()",
            "templates::training_material()",
            "templates::technical_doc()",
            "templates::simple()",
        ])
        .slide("Themes & Colors", &[
            "themes::CORPORATE, MODERN, VIBRANT, DARK",
            "themes::NATURE, TECH, CARBON",
            "colors module with Material Design colors",
            "colors module with IBM Carbon colors",
        ])
        .build()?;
    
    std::fs::write("examples/output/feature_showcase.pptx", showcase)?;
    println!("  ✓ Created examples/output/feature_showcase.pptx");

    println!("\n✅ All demos created successfully!");
    println!("   Check examples/output/ for the generated files.");
    
    Ok(())
}

examples/comprehensive_demo.rs (line 431)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    println!("╔══════════════════════════════════════════════════════════════╗");
    println!("║       PPTX-RS Element Showcase - Complete Coverage           ║");
    println!("╚══════════════════════════════════════════════════════════════╝\n");

    let mut slides = Vec::new();

    // =========================================================================
    // SLIDE 1: CenteredTitle Layout + Title Formatting
    // =========================================================================
    println!("📐 Slide 1: CenteredTitle Layout + Title Formatting");
    slides.push(
        SlideContent::new("PPTX-RS Element Showcase")
            .layout(SlideLayout::CenteredTitle)
            .title_size(54)
            .title_bold(true)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 2: TitleOnly Layout
    // =========================================================================
    println!("📐 Slide 2: TitleOnly Layout");
    slides.push(
        SlideContent::new("Section: Slide Layouts")
            .layout(SlideLayout::TitleOnly)
            .title_size(48)
            .title_bold(true)
            .title_color("C0504D")
    );

    // =========================================================================
    // SLIDE 3: TitleAndContent Layout + All Text Formatting
    // =========================================================================
    println!("📝 Slide 3: TitleAndContent + Text Formatting");
    slides.push(
        SlideContent::new("Text Formatting Options")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .title_italic(true)
            .title_underline(true)
            .title_size(44)
            .add_bullet("Normal text (default)")
            .add_bullet("Bold content text")
            .add_bullet("Italic content text")
            .add_bullet("Underlined content")
            .add_bullet("Custom font size (28pt)")
            .add_bullet("Custom color (#4F81BD)")
            .content_bold(true)
            .content_italic(true)
            .content_underline(true)
            .content_size(28)
            .content_color("4F81BD")
    );

    // =========================================================================
    // SLIDE 4: TitleAndBigContent Layout
    // =========================================================================
    println!("📐 Slide 4: TitleAndBigContent Layout");
    slides.push(
        SlideContent::new("Key Highlights")
            .layout(SlideLayout::TitleAndBigContent)
            .title_color("1F497D")
            .add_bullet("Large content area for emphasis")
            .add_bullet("Perfect for key messages")
            .add_bullet("Smaller title, bigger content")
            .content_bold(true)
            .content_size(32)
    );

    // =========================================================================
    // SLIDE 5: TwoColumn Layout
    // =========================================================================
    println!("📐 Slide 5: TwoColumn Layout");
    slides.push(
        SlideContent::new("Two Column Comparison")
            .layout(SlideLayout::TwoColumn)
            .title_color("1F497D")
            .add_bullet("Left Column Item 1")
            .add_bullet("Left Column Item 2")
            .add_bullet("Left Column Item 3")
            .add_bullet("Right Column Item 1")
            .add_bullet("Right Column Item 2")
            .add_bullet("Right Column Item 3")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 6: Blank Layout
    // =========================================================================
    println!("📐 Slide 6: Blank Layout");
    slides.push(
        SlideContent::new("")
            .layout(SlideLayout::Blank)
    );

    // =========================================================================
    // SLIDE 7: Table with All Cell Styling Options
    // =========================================================================
    println!("📊 Slide 7: Table with Cell Styling");
    let styled_table = TableBuilder::new(vec![1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Header 1").bold().background_color("1F497D"),
            TableCell::new("Header 2").bold().background_color("4F81BD"),
            TableCell::new("Header 3").bold().background_color("8064A2"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Bold Cell").bold(),
            TableCell::new("Normal Cell"),
            TableCell::new("Colored").background_color("9BBB59"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Red BG").background_color("C0504D"),
            TableCell::new("Green BG").background_color("9BBB59"),
            TableCell::new("Blue BG").background_color("4F81BD"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Row 3 Col 1"),
            TableCell::new("Row 3 Col 2"),
            TableCell::new("Row 3 Col 3").bold().background_color("F79646"),
        ]))
        .position(500000, 1800000)
        .build();
    
    slides.push(
        SlideContent::new("Table with Cell Styling")
            .table(styled_table)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 8: Charts (Bar, Line, Pie)
    // =========================================================================
    println!("📈 Slide 8: Chart Types");
    
    // Create chart data structures (for demonstration)
    let _bar_chart = ChartBuilder::new("Sales by Region", ChartType::Bar)
        .categories(vec!["North", "South", "East", "West"])
        .add_series(ChartSeries::new("2023", vec![100.0, 80.0, 120.0, 90.0]))
        .add_series(ChartSeries::new("2024", vec![120.0, 95.0, 140.0, 110.0]))
        .build();
    
    let _line_chart = ChartBuilder::new("Monthly Trend", ChartType::Line)
        .categories(vec!["Jan", "Feb", "Mar", "Apr", "May", "Jun"])
        .add_series(ChartSeries::new("Revenue", vec![10.0, 12.0, 15.0, 14.0, 18.0, 22.0]))
        .build();
    
    let _pie_chart = ChartBuilder::new("Market Share", ChartType::Pie)
        .categories(vec!["Product A", "Product B", "Product C", "Others"])
        .add_series(ChartSeries::new("Share", vec![40.0, 30.0, 20.0, 10.0]))
        .build();
    
    slides.push(
        SlideContent::new("Chart Types: Bar, Line, Pie")
            .with_chart()
            .title_color("1F497D")
            .add_bullet("Bar Chart: Compare categories")
            .add_bullet("Line Chart: Show trends over time")
            .add_bullet("Pie Chart: Show proportions")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 9: Shapes with Different Fills
    // =========================================================================
    println!("🔷 Slide 9: Shapes with Fills");
    
    let rect = Shape::new(ShapeType::Rectangle, 500000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("4F81BD"))
        .with_text("Rectangle");
    
    let ellipse = Shape::new(ShapeType::Ellipse, 3000000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("9BBB59"))
        .with_text("Ellipse");
    
    let rounded = Shape::new(ShapeType::RoundedRectangle, 5500000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("C0504D"))
        .with_text("Rounded");
    
    let triangle = Shape::new(ShapeType::Triangle, 1500000, 3000000, 1500000, 1200000)
        .with_fill(ShapeFill::new("8064A2"))
        .with_text("Triangle");
    
    let diamond = Shape::new(ShapeType::Diamond, 4000000, 3000000, 1500000, 1200000)
        .with_fill(ShapeFill::new("F79646"))
        .with_text("Diamond");
    
    slides.push(
        SlideContent::new("Shape Types with Color Fills")
            .add_shape(rect)
            .add_shape(ellipse)
            .add_shape(rounded)
            .add_shape(triangle)
            .add_shape(diamond)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 10: Gradient Fills (NEW)
    // =========================================================================
    println!("🌈 Slide 10: Gradient Fills");
    
    // Horizontal gradient
    let gradient_h = Shape::new(ShapeType::Rectangle, 500000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("1565C0", "42A5F5", GradientDirection::Horizontal))
        .with_text("Horizontal");
    
    // Vertical gradient
    let gradient_v = Shape::new(ShapeType::Rectangle, 3200000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("2E7D32", "81C784", GradientDirection::Vertical))
        .with_text("Vertical");
    
    // Diagonal gradient
    let gradient_d = Shape::new(ShapeType::RoundedRectangle, 5900000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("C62828", "EF9A9A", GradientDirection::DiagonalDown))
        .with_text("Diagonal");
    
    // Three-color gradient
    let gradient_3 = Shape::new(ShapeType::Ellipse, 1800000, 3200000, 2500000, 1200000)
        .with_gradient(GradientFill::three_color("FF6F00", "FFC107", "FFEB3B", GradientDirection::Horizontal))
        .with_text("3-Color");
    
    // Custom angle gradient
    let gradient_angle = Shape::new(ShapeType::RoundedRectangle, 4800000, 3200000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("7B1FA2", "E1BEE7", GradientDirection::Angle(135)))
        .with_text("135° Angle");
    
    slides.push(
        SlideContent::new("Gradient Fills - Multiple Directions")
            .add_shape(gradient_h)
            .add_shape(gradient_v)
            .add_shape(gradient_d)
            .add_shape(gradient_3)
            .add_shape(gradient_angle)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 11: Transparency (NEW)
    // =========================================================================
    println!("👻 Slide 11: Transparency Effects");
    
    // Base shape (fully opaque)
    let base = Shape::new(ShapeType::Rectangle, 1000000, 1800000, 3000000, 2000000)
        .with_fill(ShapeFill::new("1565C0"))
        .with_text("Base (100%)");
    
    // 25% transparent overlay
    let trans_25 = Shape::new(ShapeType::Rectangle, 2000000, 2200000, 2500000, 1500000)
        .with_fill(ShapeFill::new("F44336").with_transparency(25))
        .with_line(ShapeLine::new("B71C1C", 25400))
        .with_text("25% Transparent");
    
    // 50% transparent overlay
    let trans_50 = Shape::new(ShapeType::Ellipse, 4500000, 1800000, 2500000, 2000000)
        .with_fill(ShapeFill::new("4CAF50").with_transparency(50))
        .with_line(ShapeLine::new("1B5E20", 25400))
        .with_text("50% Transparent");
    
    // 75% transparent overlay
    let trans_75 = Shape::new(ShapeType::RoundedRectangle, 5500000, 2500000, 2500000, 1500000)
        .with_fill(ShapeFill::new("FF9800").with_transparency(75))
        .with_line(ShapeLine::new("E65100", 25400))
        .with_text("75% Transparent");
    
    slides.push(
        SlideContent::new("Transparency Effects - Overlapping Shapes")
            .add_shape(base)
            .add_shape(trans_25)
            .add_shape(trans_50)
            .add_shape(trans_75)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 12: Styled Connectors (NEW)
    // =========================================================================
    println!("🔗 Slide 12: Styled Connectors");
    
    // Create shapes to connect
    let box1 = Shape::new(ShapeType::RoundedRectangle, 500000, 1800000, 1800000, 800000)
        .with_id(100)
        .with_fill(ShapeFill::new("1565C0"))
        .with_text("Start");
    
    let box2 = Shape::new(ShapeType::RoundedRectangle, 3500000, 1800000, 1800000, 800000)
        .with_id(101)
        .with_fill(ShapeFill::new("2E7D32"))
        .with_text("Process");
    
    let box3 = Shape::new(ShapeType::RoundedRectangle, 6500000, 1800000, 1800000, 800000)
        .with_id(102)
        .with_fill(ShapeFill::new("C62828"))
        .with_text("End");
    
    // Straight connector with arrow
    let conn1 = Connector::straight(2300000, 2200000, 3500000, 2200000)
        .with_line(ConnectorLine::new("1565C0", 25400))
        .with_end_arrow(ArrowType::Triangle)
        .with_arrow_size(ArrowSize::Large);
    
    // Elbow connector with stealth arrow
    let conn2 = Connector::elbow(5300000, 2200000, 6500000, 2200000)
        .with_line(ConnectorLine::new("2E7D32", 38100).with_dash(LineDash::Dash))
        .with_end_arrow(ArrowType::Stealth)
        .with_arrow_size(ArrowSize::Medium);
    
    // Curved connector examples
    let box4 = Shape::new(ShapeType::Ellipse, 1000000, 3200000, 1500000, 800000)
        .with_id(103)
        .with_fill(ShapeFill::new("7B1FA2"))
        .with_text("A");
    
    let box5 = Shape::new(ShapeType::Ellipse, 4000000, 3200000, 1500000, 800000)
        .with_id(104)
        .with_fill(ShapeFill::new("00838F"))
        .with_text("B");
    
    let box6 = Shape::new(ShapeType::Ellipse, 7000000, 3200000, 1500000, 800000)
        .with_id(105)
        .with_fill(ShapeFill::new("EF6C00"))
        .with_text("C");
    
    // Curved connector with diamond arrow
    let conn3 = Connector::curved(2500000, 3600000, 4000000, 3600000)
        .with_line(ConnectorLine::new("7B1FA2", 19050).with_dash(LineDash::DashDot))
        .with_arrows(ArrowType::Oval, ArrowType::Diamond);
    
    // Dotted connector
    let conn4 = Connector::straight(5500000, 3600000, 7000000, 3600000)
        .with_line(ConnectorLine::new("00838F", 12700).with_dash(LineDash::Dot))
        .with_end_arrow(ArrowType::Open);
    
    slides.push(
        SlideContent::new("Styled Connectors - Types, Arrows, Dashes")
            .add_shape(box1)
            .add_shape(box2)
            .add_shape(box3)
            .add_shape(box4)
            .add_shape(box5)
            .add_shape(box6)
            .add_connector(conn1)
            .add_connector(conn2)
            .add_connector(conn3)
            .add_connector(conn4)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 13: Images
    // =========================================================================
    println!("🖼️  Slide 13: Image Placeholders");
    
    let img1 = Image::new("logo.png", 2500000, 1800000, "png")
        .position(500000, 1600000);
    let img2 = Image::new("photo.jpg", 2500000, 1800000, "jpg")
        .position(3500000, 1600000);
    let img3 = Image::new("diagram.png", 2000000, 1800000, "png")
        .position(6500000, 1600000);
    
    slides.push(
        SlideContent::new("Image Placeholders")
            .add_image(img1)
            .add_image(img2)
            .add_image(img3)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 11: Advanced Table with Borders & Alignment (NEW)
    // =========================================================================
    println!("📊 Slide 11: Advanced Table (borders, alignment, merged cells)");
    
    // Build advanced table using generator's TableBuilder with alignment
    let advanced_table = TableBuilder::new(vec![2000000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2024 Financial Report").bold().background_color("1F4E79").text_color("FFFFFF").align_center().font_size(14),
            TableCell::new("").background_color("1F4E79"),
            TableCell::new("").background_color("1F4E79"),
            TableCell::new("").background_color("1F4E79"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Category").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Revenue").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Expenses").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Profit").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Product Sales").text_color("000000").align_left(),
            TableCell::new("$1,250,000").text_color("2E7D32").align_right(),
            TableCell::new("$450,000").text_color("C62828").align_right(),
            TableCell::new("$800,000").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Services").text_color("000000").align_left(),
            TableCell::new("$890,000").text_color("2E7D32").align_right(),
            TableCell::new("$320,000").text_color("C62828").align_right(),
            TableCell::new("$570,000").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Total").bold().background_color("E7E6E6").text_color("000000").align_left(),
            TableCell::new("$2,140,000").bold().background_color("E7E6E6").text_color("000000").align_right(),
            TableCell::new("$770,000").bold().background_color("E7E6E6").text_color("000000").align_right(),
            TableCell::new("$1,370,000").bold().background_color("C6EFCE").text_color("006100").align_right(),
        ]))
        .position(300000, 1600000)
        .build();
    
    slides.push(
        SlideContent::new("Financial Report - Advanced Table")
            .table(advanced_table)
            .title_color("1F4E79")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 12: Comparison Matrix Table (NEW)
    // =========================================================================
    println!("📊 Slide 12: Comparison Matrix Table");
    
    let comparison_table = TableBuilder::new(vec![2000000, 1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Feature").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Basic").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Pro").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Enterprise").bold().background_color("4472C4").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Storage").text_color("000000"),
            TableCell::new("5 GB").text_color("000000"),
            TableCell::new("50 GB").text_color("000000"),
            TableCell::new("Unlimited").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Users").text_color("000000"),
            TableCell::new("1").text_color("000000"),
            TableCell::new("10").text_color("000000"),
            TableCell::new("Unlimited").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Support").text_color("000000"),
            TableCell::new("Email").text_color("000000"),
            TableCell::new("24/7 Chat").text_color("000000"),
            TableCell::new("Dedicated").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("API Access").text_color("000000"),
            TableCell::new("No").text_color("C62828"),
            TableCell::new("Yes").text_color("2E7D32"),
            TableCell::new("Yes + Priority").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Price/month").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$9").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$29").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$99").bold().background_color("F2F2F2").text_color("000000"),
        ]))
        .position(500000, 1600000)
        .build();
    
    slides.push(
        SlideContent::new("Pricing Comparison Matrix")
            .table(comparison_table)
            .title_color("4472C4")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 13: Process Flow with Shapes (NEW - SmartArt-like)
    // =========================================================================
    println!("🔷 Slide 13: Process Flow (SmartArt-style)");
    
    // Create process flow using shapes
    let step1 = Shape::new(ShapeType::RoundedRectangle, 300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("1. Research");
    let arrow1 = Shape::new(ShapeType::RightArrow, 1800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step2 = Shape::new(ShapeType::RoundedRectangle, 2300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("2. Design");
    let arrow2 = Shape::new(ShapeType::RightArrow, 3800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step3 = Shape::new(ShapeType::RoundedRectangle, 4300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("3. Develop");
    let arrow3 = Shape::new(ShapeType::RightArrow, 5800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step4 = Shape::new(ShapeType::RoundedRectangle, 6300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("5B9BD5"))
        .with_text("4. Deploy");
    
    slides.push(
        SlideContent::new("Development Process Flow")
            .add_shape(step1)
            .add_shape(arrow1)
            .add_shape(step2)
            .add_shape(arrow2)
            .add_shape(step3)
            .add_shape(arrow3)
            .add_shape(step4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 14: Organization Chart with Shapes (NEW)
    // =========================================================================
    println!("🔷 Slide 14: Organization Chart");
    
    // CEO at top
    let ceo = Shape::new(ShapeType::RoundedRectangle, 3500000, 1400000, 2000000, 600000)
        .with_fill(ShapeFill::new("1F4E79"))
        .with_text("CEO");
    
    // Vertical line from CEO
    let line1 = Shape::new(ShapeType::Rectangle, 4450000, 2000000, 100000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // Horizontal connector
    let hline = Shape::new(ShapeType::Rectangle, 1950000, 2400000, 5100000, 50000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // CTO, CFO, COO
    let cto = Shape::new(ShapeType::RoundedRectangle, 1000000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("CTO");
    let cfo = Shape::new(ShapeType::RoundedRectangle, 3600000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("CFO");
    let coo = Shape::new(ShapeType::RoundedRectangle, 6200000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("COO");
    
    // Vertical lines to departments
    let vline1 = Shape::new(ShapeType::Rectangle, 1850000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let vline2 = Shape::new(ShapeType::Rectangle, 4450000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let vline3 = Shape::new(ShapeType::Rectangle, 7050000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // Teams under CTO
    let eng = Shape::new(ShapeType::Rectangle, 500000, 3300000, 1200000, 400000)
        .with_fill(ShapeFill::new("BDD7EE"))
        .with_text("Engineering");
    let product = Shape::new(ShapeType::Rectangle, 1800000, 3300000, 1200000, 400000)
        .with_fill(ShapeFill::new("BDD7EE"))
        .with_text("Product");
    
    slides.push(
        SlideContent::new("Organization Structure")
            .add_shape(ceo)
            .add_shape(line1)
            .add_shape(hline)
            .add_shape(cto)
            .add_shape(cfo)
            .add_shape(coo)
            .add_shape(vline1)
            .add_shape(vline2)
            .add_shape(vline3)
            .add_shape(eng)
            .add_shape(product)
            .title_color("1F4E79")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 15: PDCA Cycle Diagram (NEW)
    // =========================================================================
    println!("🔷 Slide 15: PDCA Cycle Diagram");
    
    // Four quadrants for PDCA
    let plan = Shape::new(ShapeType::RoundedRectangle, 1500000, 1600000, 2500000, 1500000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("PLAN\n\nDefine goals\nand strategy");
    let do_box = Shape::new(ShapeType::RoundedRectangle, 4500000, 1600000, 2500000, 1500000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("DO\n\nImplement\nthe plan");
    let check = Shape::new(ShapeType::RoundedRectangle, 4500000, 3300000, 2500000, 1500000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("CHECK\n\nMeasure\nresults");
    let act = Shape::new(ShapeType::RoundedRectangle, 1500000, 3300000, 2500000, 1500000)
        .with_fill(ShapeFill::new("FFC000"))
        .with_text("ACT\n\nAdjust and\nimprove");
    
    // Arrows between quadrants
    let arr1 = Shape::new(ShapeType::RightArrow, 4100000, 2100000, 300000, 300000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr2 = Shape::new(ShapeType::DownArrow, 5600000, 3200000, 300000, 200000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr3 = Shape::new(ShapeType::LeftArrow, 4100000, 3800000, 300000, 300000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr4 = Shape::new(ShapeType::UpArrow, 2600000, 3200000, 300000, 200000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    slides.push(
        SlideContent::new("PDCA Continuous Improvement Cycle")
            .add_shape(plan)
            .add_shape(do_box)
            .add_shape(check)
            .add_shape(act)
            .add_shape(arr1)
            .add_shape(arr2)
            .add_shape(arr3)
            .add_shape(arr4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 16: Pyramid Diagram (Maslow's Hierarchy) (NEW)
    // =========================================================================
    println!("🔷 Slide 16: Pyramid Diagram");
    
    // Build pyramid from bottom to top
    let level5 = Shape::new(ShapeType::Trapezoid, 500000, 4000000, 8000000, 600000)
        .with_fill(ShapeFill::new("C00000"))
        .with_text("Physiological Needs - Food, Water, Shelter");
    let level4 = Shape::new(ShapeType::Trapezoid, 1000000, 3400000, 7000000, 600000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Safety Needs - Security, Stability");
    let level3 = Shape::new(ShapeType::Trapezoid, 1500000, 2800000, 6000000, 600000)
        .with_fill(ShapeFill::new("FFC000"))
        .with_text("Love & Belonging - Relationships");
    let level2 = Shape::new(ShapeType::Trapezoid, 2000000, 2200000, 5000000, 600000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Esteem - Achievement, Respect");
    let level1 = Shape::new(ShapeType::Triangle, 2500000, 1500000, 4000000, 700000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Self-Actualization");
    
    slides.push(
        SlideContent::new("Maslow's Hierarchy of Needs")
            .add_shape(level5)
            .add_shape(level4)
            .add_shape(level3)
            .add_shape(level2)
            .add_shape(level1)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 17: Venn Diagram (NEW)
    // =========================================================================
    println!("🔷 Slide 17: Venn Diagram");
    
    // Three overlapping circles
    let circle1 = Shape::new(ShapeType::Ellipse, 1500000, 1800000, 3000000, 3000000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Skills");
    let circle2 = Shape::new(ShapeType::Ellipse, 3500000, 1800000, 3000000, 3000000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Passion");
    let circle3 = Shape::new(ShapeType::Ellipse, 2500000, 3200000, 3000000, 3000000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Market Need");
    
    // Center label
    let center = Shape::new(ShapeType::Ellipse, 3200000, 2800000, 1600000, 800000)
        .with_fill(ShapeFill::new("FFFFFF"))
        .with_text("IKIGAI");
    
    slides.push(
        SlideContent::new("Finding Your Ikigai - Venn Diagram")
            .add_shape(circle1)
            .add_shape(circle2)
            .add_shape(circle3)
            .add_shape(center)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 18: Timeline/Roadmap (NEW)
    // =========================================================================
    println!("📊 Slide 18: Project Timeline");
    
    let timeline_table = TableBuilder::new(vec![1500000, 1500000, 1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q2 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q3 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q4 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q1 2025").bold().background_color("4472C4").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Research\n& Planning").background_color("BDD7EE").text_color("1F497D"),
            TableCell::new("Design\nPhase").background_color("BDD7EE").text_color("1F497D"),
            TableCell::new("Development\nSprint 1-3").background_color("C6EFCE").text_color("006100"),
            TableCell::new("Testing\n& QA").background_color("FCE4D6").text_color("C65911"),
            TableCell::new("Launch\n& Support").background_color("E2EFDA").text_color("375623"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("✓ Complete").bold().text_color("2E7D32"),
            TableCell::new("✓ Complete").bold().text_color("2E7D32"),
            TableCell::new("In Progress").text_color("ED7D31"),
            TableCell::new("Planned").text_color("7F7F7F"),
            TableCell::new("Planned").text_color("7F7F7F"),
        ]))
        .position(300000, 2000000)
        .build();
    
    slides.push(
        SlideContent::new("Project Roadmap 2024-2025")
            .table(timeline_table)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 19: Dashboard Summary (NEW)
    // =========================================================================
    println!("🔷 Slide 19: Dashboard with KPIs");
    
    // KPI boxes
    let kpi1 = Shape::new(ShapeType::RoundedRectangle, 300000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Revenue\n\n$2.14M\n+15% YoY");
    let kpi2 = Shape::new(ShapeType::RoundedRectangle, 2500000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Customers\n\n12,450\n+22% YoY");
    let kpi3 = Shape::new(ShapeType::RoundedRectangle, 4700000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("NPS Score\n\n72\n+8 pts");
    let kpi4 = Shape::new(ShapeType::RoundedRectangle, 6900000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("5B9BD5"))
        .with_text("Retention\n\n94%\n+3% YoY");
    
    // Status indicators
    let status1 = Shape::new(ShapeType::Ellipse, 1800000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    let status2 = Shape::new(ShapeType::Ellipse, 4000000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    let status3 = Shape::new(ShapeType::Ellipse, 6200000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("FFC000"));
    let status4 = Shape::new(ShapeType::Ellipse, 8400000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    
    slides.push(
        SlideContent::new("Executive Dashboard - Q1 2024")
            .add_shape(kpi1)
            .add_shape(kpi2)
            .add_shape(kpi3)
            .add_shape(kpi4)
            .add_shape(status1)
            .add_shape(status2)
            .add_shape(status3)
            .add_shape(status4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 20: Summary Slide (NEW)
    // =========================================================================
    println!("📝 Slide 20: Summary with Speaker Notes");
    
    slides.push(
        SlideContent::new("Summary & Next Steps")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Completed: Research, Design, Initial Development")
            .add_bullet("In Progress: Sprint 3 Development")
            .add_bullet("Next: QA Testing Phase (Q4 2024)")
            .add_bullet("Launch Target: Q1 2025")
            .add_bullet("Key Risks: Resource constraints, Timeline pressure")
            .content_size(24)
            .notes("Speaker Notes:\n\n1. Emphasize the progress made\n2. Highlight key achievements\n3. Address any concerns about timeline\n4. Open for Q&A")
    );

    // =========================================================================
    // SLIDE 21: Bullet Styles (NEW v0.2.1)
    // =========================================================================
    println!("🔢 Slide 21: Bullet Styles (NEW)");
    
    // Numbered list
    slides.push(
        SlideContent::new("Bullet Styles - Numbered List")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .with_bullet_style(BulletStyle::Number)
            .add_bullet("First numbered item")
            .add_bullet("Second numbered item")
            .add_bullet("Third numbered item")
            .add_bullet("Fourth numbered item")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 22: Lettered Lists (NEW v0.2.1)
    // =========================================================================
    println!("🔤 Slide 22: Lettered Lists (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Lettered Lists")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_lettered("Option A - First choice")
            .add_lettered("Option B - Second choice")
            .add_lettered("Option C - Third choice")
            .add_lettered("Option D - Fourth choice")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 23: Roman Numerals (NEW v0.2.1)
    // =========================================================================
    println!("🏛️ Slide 23: Roman Numerals (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Roman Numerals")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .with_bullet_style(BulletStyle::RomanUpper)
            .add_bullet("Chapter I - Introduction")
            .add_bullet("Chapter II - Background")
            .add_bullet("Chapter III - Methodology")
            .add_bullet("Chapter IV - Results")
            .add_bullet("Chapter V - Conclusion")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 24: Custom Bullets (NEW v0.2.1)
    // =========================================================================
    println!("⭐ Slide 24: Custom Bullets (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Custom Characters")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_styled_bullet("Star bullet point", BulletStyle::Custom('★'))
            .add_styled_bullet("Arrow bullet point", BulletStyle::Custom('→'))
            .add_styled_bullet("Check bullet point", BulletStyle::Custom('✓'))
            .add_styled_bullet("Diamond bullet point", BulletStyle::Custom('◆'))
            .add_styled_bullet("Heart bullet point", BulletStyle::Custom('♥'))
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 25: Sub-bullets / Hierarchy (NEW v0.2.1)
    // =========================================================================
    println!("📊 Slide 25: Sub-bullets Hierarchy (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Hierarchical Lists")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Main Topic 1")
            .add_sub_bullet("Supporting detail A")
            .add_sub_bullet("Supporting detail B")
            .add_bullet("Main Topic 2")
            .add_sub_bullet("Supporting detail C")
            .add_sub_bullet("Supporting detail D")
            .add_bullet("Main Topic 3")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 26: Text Enhancements (NEW v0.2.1)
    // =========================================================================
    println!("✏️ Slide 26: Text Enhancements (NEW)");
    
    // Use BulletPoint with formatting
    let strikethrough_bullet = BulletPoint::new("Strikethrough: This text is crossed out").strikethrough();
    let highlight_bullet = BulletPoint::new("Highlight: Yellow background for emphasis").highlight("FFFF00");
    let subscript_bullet = BulletPoint::new("Subscript: H₂O - for chemical formulas").subscript();
    let superscript_bullet = BulletPoint::new("Superscript: x² - for math expressions").superscript();
    let bold_colored = BulletPoint::new("Combined: Bold + Red color").bold().color("FF0000");
    
    let mut text_enhancements_slide = SlideContent::new("Text Enhancements - New Formatting")
        .layout(SlideLayout::TitleAndContent)
        .title_color("1F497D")
        .title_bold(true)
        .content_size(24);
    text_enhancements_slide.bullets.push(strikethrough_bullet);
    text_enhancements_slide.bullets.push(highlight_bullet);
    text_enhancements_slide.bullets.push(subscript_bullet);
    text_enhancements_slide.bullets.push(superscript_bullet);
    text_enhancements_slide.bullets.push(bold_colored);
    
    slides.push(text_enhancements_slide);

    // =========================================================================
    // SLIDE 27: Font Size Presets (NEW v0.2.1)
    // =========================================================================
    println!("🔤 Slide 27: Font Size Presets (NEW)");
    
    // Demonstrate different font sizes per bullet
    let large_bullet = BulletPoint::new(&format!("LARGE: {}pt - Extra large text", font_sizes::LARGE)).font_size(font_sizes::LARGE);
    let heading_bullet = BulletPoint::new(&format!("HEADING: {}pt - Section headers", font_sizes::HEADING)).font_size(font_sizes::HEADING);
    let body_bullet = BulletPoint::new(&format!("BODY: {}pt - Regular content", font_sizes::BODY)).font_size(font_sizes::BODY);
    let small_bullet = BulletPoint::new(&format!("SMALL: {}pt - Smaller text", font_sizes::SMALL)).font_size(font_sizes::SMALL);
    let caption_bullet = BulletPoint::new(&format!("CAPTION: {}pt - Captions and notes", font_sizes::CAPTION)).font_size(font_sizes::CAPTION);
    
    let mut font_size_slide = SlideContent::new("Font Size Presets - Each line different size")
        .layout(SlideLayout::TitleAndContent)
        .title_color("1F497D")
        .title_bold(true)
        .title_size(font_sizes::TITLE);
    font_size_slide.bullets.push(large_bullet);
    font_size_slide.bullets.push(heading_bullet);
    font_size_slide.bullets.push(body_bullet);
    font_size_slide.bullets.push(small_bullet);
    font_size_slide.bullets.push(caption_bullet);
    
    slides.push(font_size_slide);

    // =========================================================================
    // SLIDE 28: Theme Colors (NEW v0.2.1)
    // =========================================================================
    println!("🎨 Slide 28: Theme Colors (NEW)");
    
    // Create shapes with theme colors
    let corporate_shape = Shape::new(ShapeType::Rectangle, 500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::CORPORATE.primary))
        .with_text("Corporate");
    
    let modern_shape = Shape::new(ShapeType::Rectangle, 2500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::MODERN.primary))
        .with_text("Modern");
    
    let vibrant_shape = Shape::new(ShapeType::Rectangle, 4500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::VIBRANT.primary))
        .with_text("Vibrant");
    
    let dark_shape = Shape::new(ShapeType::Rectangle, 6500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::DARK.primary))
        .with_text("Dark");
    
    let nature_shape = Shape::new(ShapeType::Rectangle, 500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::NATURE.primary))
        .with_text("Nature");
    
    let tech_shape = Shape::new(ShapeType::Rectangle, 2500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::TECH.primary))
        .with_text("Tech");
    
    let carbon_shape = Shape::new(ShapeType::Rectangle, 4500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::CARBON.primary))
        .with_text("Carbon");
    
    slides.push(
        SlideContent::new("Theme Color Palettes")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_shape(corporate_shape)
            .add_shape(modern_shape)
            .add_shape(vibrant_shape)
            .add_shape(dark_shape)
            .add_shape(nature_shape)
            .add_shape(tech_shape)
            .add_shape(carbon_shape)
    );

    // =========================================================================
    // SLIDE 29: Material & Carbon Design Colors (NEW v0.2.1)
    // =========================================================================
    println!("🌈 Slide 29: Material & Carbon Colors (NEW)");
    
    // Material Design colors
    let material_red = Shape::new(ShapeType::Rectangle, 500000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_RED))
        .with_text("M-Red");
    
    let material_blue = Shape::new(ShapeType::Rectangle, 1900000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_BLUE))
        .with_text("M-Blue");
    
    let material_green = Shape::new(ShapeType::Rectangle, 3300000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_GREEN))
        .with_text("M-Green");
    
    let material_orange = Shape::new(ShapeType::Rectangle, 4700000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_ORANGE))
        .with_text("M-Orange");
    
    let material_purple = Shape::new(ShapeType::Rectangle, 6100000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_PURPLE))
        .with_text("M-Purple");
    
    // Carbon Design colors
    let carbon_blue = Shape::new(ShapeType::Rectangle, 500000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_BLUE_60))
        .with_text("C-Blue");
    
    let carbon_green = Shape::new(ShapeType::Rectangle, 1900000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_GREEN_50))
        .with_text("C-Green");
    
    let carbon_red = Shape::new(ShapeType::Rectangle, 3300000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_RED_60))
        .with_text("C-Red");
    
    let carbon_purple = Shape::new(ShapeType::Rectangle, 4700000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_PURPLE_60))
        .with_text("C-Purple");
    
    let carbon_gray = Shape::new(ShapeType::Rectangle, 6100000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_GRAY_100))
        .with_text("C-Gray");
    
    slides.push(
        SlideContent::new("Material & Carbon Design Colors")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_shape(material_red)
            .add_shape(material_blue)
            .add_shape(material_green)
            .add_shape(material_orange)
            .add_shape(material_purple)
            .add_shape(carbon_blue)
            .add_shape(carbon_green)
            .add_shape(carbon_red)
            .add_shape(carbon_purple)
            .add_shape(carbon_gray)
    );

    // =========================================================================
    // SLIDE 30: Image from Base64 (NEW v0.2.1)
    // =========================================================================
    println!("🖼️ Slide 30: Image from Base64 (NEW)");
    
    // 1x1 red PNG pixel in base64
    let _red_pixel_base64 = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8DwHwAFBQIAX8jx0gAAAABJRU5ErkJggg==";
    
    // Create image from base64 (demonstrating the API)
    let _base64_image = ImageBuilder::from_base64(_red_pixel_base64, 914400, 914400, "PNG")
        .position(4000000, 2500000)
        .build();
    
    slides.push(
        SlideContent::new("Image Loading - New Methods")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Image::new(path) - Load from file path")
            .add_bullet("Image::from_base64(data) - Load from base64 string")
            .add_bullet("Image::from_bytes(data) - Load from raw bytes")
            .add_bullet("ImageBuilder for fluent API configuration")
            .add_bullet("Built-in base64 decoder (no external deps)")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 31: Feature Summary (NEW v0.2.1)
    // =========================================================================
    println!("📋 Slide 31: v0.2.1 Feature Summary (NEW)");
    
    slides.push(
        SlideContent::new("New Features in v0.2.1")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_numbered("BulletStyle: Number, Letter, Roman, Custom")
            .add_numbered("TextFormat: Strikethrough, Highlight")
            .add_numbered("TextFormat: Subscript, Superscript")
            .add_numbered("Font size presets in prelude")
            .add_numbered("Image::from_base64 and from_bytes")
            .add_numbered("Theme color palettes (7 themes)")
            .add_numbered("Material & Carbon Design colors")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 32: Slide Show Settings - Comparison Table (REAL: embedded in presProps.xml)
    // =========================================================================
    println!("🎬 Slide 34: Slide Show Settings (Visual)");

    let show_speaker = SlideShowSettings::new().pen_color(PenColor::red());
    let show_kiosk = SlideShowSettings::kiosk();
    let _show_range = SlideShowSettings::new()
        .show_type(ShowType::Browsed)
        .slide_range(SlideRange::Range { start: 1, end: 10 })
        .without_animation(true);
    let _speaker_xml = show_speaker.to_xml();
    let _kiosk_xml = show_kiosk.to_xml();

    let show_table = TableBuilder::new(vec![2000000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Setting").bold().background_color("1F4E79").text_color("FFFFFF"),
            TableCell::new("Speaker").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Kiosk").bold().background_color("ED7D31").text_color("FFFFFF"),
            TableCell::new("Browsed").bold().background_color("70AD47").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Loop").bold().background_color("D6E4F0"),
            TableCell::new("No"), TableCell::new("Yes").bold().text_color("2E7D32"),
            TableCell::new("No"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Narration").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("No").text_color("C62828"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Animation").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("Yes"),
            TableCell::new("No").text_color("C62828"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Timings").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("Auto"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Slide Range").bold().background_color("D6E4F0"),
            TableCell::new("All"), TableCell::new("All"),
            TableCell::new("1-10"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Pen Color").bold().background_color("D6E4F0"),
            TableCell::new("Red").text_color("FF0000"),
            TableCell::new("Red").text_color("FF0000"),
            TableCell::new("Red").text_color("FF0000"),
        ]))
        .position(300000, 1600000)
        .build();

    // Mode icons
    let icon_speaker = Shape::new(ShapeType::RoundedRectangle, 300000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Speaker: Full control");
    let icon_kiosk = Shape::new(ShapeType::RoundedRectangle, 3100000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Kiosk: Auto-loop");
    let icon_browsed = Shape::new(ShapeType::RoundedRectangle, 5900000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Browsed: Scrollbar");

    slides.push(
        SlideContent::new("Slide Show Settings - Mode Comparison")
            .table(show_table)
            .add_shape(icon_speaker)
            .add_shape(icon_kiosk)
            .add_shape(icon_browsed)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 35: Print Settings - Visual Handout Grid
    // =========================================================================
    println!("🖨️  Slide 35: Print Settings & Handouts (Visual)");

    let print = PrintSettings::new()
        .print_what(PrintWhat::Handouts)
        .color_mode(PrintColorMode::Grayscale)
        .handout_layout(GenHandoutLayout::SlidesPerPage6)
        .frame_slides(true)
        .header("Q1 2025 Strategy Review")
        .footer("Confidential - Internal Use Only")
        .print_date(true)
        .print_page_numbers(true);
    let _prnpr_xml = print.to_prnpr_xml();
    let _handout_xml = print.to_handout_master_xml();

    // Visual: 6-slide handout grid (2 cols x 3 rows)
    let hdr = Shape::new(ShapeType::Rectangle, 300000, 1500000, 4200000, 300000)
        .with_fill(ShapeFill::new("E7E6E6"))
        .with_text("Q1 2025 Strategy Review");
    // Row 1
    let s1 = Shape::new(ShapeType::Rectangle, 400000, 2000000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 1");
    let s2 = Shape::new(ShapeType::Rectangle, 2500000, 2000000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 2");
    // Row 2
    let s3 = Shape::new(ShapeType::Rectangle, 400000, 3200000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 3");
    let s4 = Shape::new(ShapeType::Rectangle, 2500000, 3200000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 4");
    // Row 3
    let s5 = Shape::new(ShapeType::Rectangle, 400000, 4400000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 5");
    let s6 = Shape::new(ShapeType::Rectangle, 2500000, 4400000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 6");
    let ftr = Shape::new(ShapeType::Rectangle, 300000, 5600000, 4200000, 300000)
        .with_fill(ShapeFill::new("E7E6E6"))
        .with_text("Confidential - Internal Use Only");

    // Settings summary table on the right
    let print_table = TableBuilder::new(vec![1800000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Print Settings").bold().background_color("1F4E79").text_color("FFFFFF"),
            TableCell::new("").background_color("1F4E79"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Print What").bold().background_color("D6E4F0"),
            TableCell::new("Handouts"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Color Mode").bold().background_color("D6E4F0"),
            TableCell::new("Grayscale"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Layout").bold().background_color("D6E4F0"),
            TableCell::new("6 slides/page"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Frame Slides").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Date").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Page Numbers").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .position(5000000, 1800000)
        .build();

    slides.push(
        SlideContent::new("Print Handout - 6 Slides Per Page")
            .table(print_table)
            .add_shape(hdr)
            .add_shape(s1).add_shape(s2)
            .add_shape(s3).add_shape(s4)
            .add_shape(s5).add_shape(s6)
            .add_shape(ftr)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 36: Advanced Table Merging - Actual Merged Table
    // =========================================================================
    println!("📊 Slide 36: Advanced Table Merging (Visual)");

    // Use TableMergeMap to compute states, then build a visual table
    let mut merge_map = TableMergeMap::new(5, 4);
    merge_map.merge_cells(0, 0, 1, 4).unwrap(); // Title row spans all 4 cols
    merge_map.merge_cells(1, 0, 2, 1).unwrap(); // "Products" spans 2 rows
    merge_map.merge_cells(3, 0, 2, 1).unwrap(); // "Services" spans 2 rows

    // Show merge state labels
    let state_00 = merge_map.cell_state(0, 0); // Anchor gridSpan=4
    let state_01 = merge_map.cell_state(0, 1); // HMerge
    let state_10 = merge_map.cell_state(1, 0); // Anchor rowSpan=2
    let state_20 = merge_map.cell_state(2, 0); // VMerge
    println!("   ├── (0,0): {}", state_00.to_xml_attrs().trim());
    println!("   ├── (0,1): {}", state_01.to_xml_attrs().trim());
    println!("   ├── (1,0): {}", state_10.to_xml_attrs().trim());
    println!("   └── (2,0): {}", state_20.to_xml_attrs().trim());

    // Build the table with REAL merge attributes (gridSpan, rowSpan, hMerge, vMerge)
    let merge_table = TableBuilder::new(vec![1500000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2025 Revenue Report").bold().background_color("1F4E79").text_color("FFFFFF").grid_span(4),
            TableCell::new("").background_color("1F4E79").h_merge(),
            TableCell::new("").background_color("1F4E79").h_merge(),
            TableCell::new("").background_color("1F4E79").h_merge(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Products").bold().background_color("BDD7EE").text_color("1F497D").row_span(2),
            TableCell::new("Hardware").background_color("E2EFDA"),
            TableCell::new("$450,000").text_color("2E7D32").align_right(),
            TableCell::new("+12%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("").background_color("BDD7EE").v_merge(),
            TableCell::new("Software").background_color("E2EFDA"),
            TableCell::new("$680,000").text_color("2E7D32").align_right(),
            TableCell::new("+25%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Services").bold().background_color("FCE4D6").text_color("C65911").row_span(2),
            TableCell::new("Consulting").background_color("FFF2CC"),
            TableCell::new("$320,000").text_color("2E7D32").align_right(),
            TableCell::new("+8%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("").background_color("FCE4D6").v_merge(),
            TableCell::new("Support").background_color("FFF2CC"),
            TableCell::new("$190,000").text_color("2E7D32").align_right(),
            TableCell::new("+5%").bold().text_color("2E7D32").align_right(),
        ]))
        .position(300000, 1600000)
        .build();

    // Legend shapes
    let legend_anchor = Shape::new(ShapeType::RoundedRectangle, 300000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Anchor (gridSpan/rowSpan)");
    let legend_hmerge = Shape::new(ShapeType::RoundedRectangle, 2500000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("hMerge (col covered)");
    let legend_vmerge = Shape::new(ShapeType::RoundedRectangle, 4700000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("vMerge (row covered)");
    let legend_normal = Shape::new(ShapeType::RoundedRectangle, 6900000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"))
        .with_text("Normal (no merge)");

    slides.push(
        SlideContent::new("Advanced Table Merging - Merged Cells")
            .table(merge_table)
            .add_shape(legend_anchor)
            .add_shape(legend_hmerge)
            .add_shape(legend_vmerge)
            .add_shape(legend_normal)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // Build PresentationSettings with all advanced features
    // =========================================================================
    println!("\n⚙️  Building Presentation Settings...");

    // Slide show settings (embedded in presProps.xml as <p:showPr>)
    let show_settings = SlideShowSettings::new()
        .show_type(ShowType::Speaker)
        .pen_color(PenColor::red())
        .use_timings(true);
    println!("   ├── Slide Show: Speaker mode, red pen, timings enabled");
    println!("   │   └── XML: {} bytes", show_settings.to_xml().len());

    // Print settings (embedded in presProps.xml as <p:prnPr>)
    let print_settings = PrintSettings::new()
        .print_what(PrintWhat::Handouts)
        .color_mode(PrintColorMode::Grayscale)
        .handout_layout(GenHandoutLayout::SlidesPerPage6)
        .frame_slides(true)
        .header("Q1 2025 Strategy Review")
        .footer("Confidential - Internal Use Only")
        .print_date(true)
        .print_page_numbers(true);
    println!("   └── Print: Handouts, 6/page, grayscale, framed");
    println!("       └── XML: {} bytes", print_settings.to_prnpr_xml().len());

    let pres_settings = PresentationSettings::new()
        .slide_show(show_settings)
        .print(print_settings);
    println!("   All settings configured → presProps.xml");

    // =========================================================================
    // Generate PPTX with real integrated features
    // =========================================================================
    println!("\n📦 Generating PPTX with integrated features...");
    let pptx_data = create_pptx_with_settings(
        "PPTX-RS Element Showcase",
        slides.clone(),
        Some(pres_settings),
    )?;
    fs::write("comprehensive_demo.pptx", &pptx_data)?;
    println!("   ✓ Created comprehensive_demo.pptx ({} slides, {} bytes)", 
             slides.len(), pptx_data.len());

    // =========================================================================
    // Package Analysis - Demonstrate Reading
    // =========================================================================
    println!("\n📖 Package Analysis (Read Capability):");
    
    let package = Package::open("comprehensive_demo.pptx")?;
    let paths = package.part_paths();
    
    let slide_count = paths.iter()
        .filter(|p| p.starts_with("ppt/slides/slide") && p.ends_with(".xml"))
        .count();
    
    println!("   ├── Total parts: {}", package.part_count());
    println!("   ├── Slides: {}", slide_count);
    println!("   └── Package opened and analyzed successfully");

    // =========================================================================
    // NEW: Parts API Demonstration
    // =========================================================================
    println!("\n🧩 Parts API Demonstration:");
    
    // SlideLayoutPart - 11 layout types
    println!("   ┌── SlideLayoutPart (11 layout types):");
    let layouts = [
        LayoutType::Title,
        LayoutType::TitleAndContent,
        LayoutType::SectionHeader,
        LayoutType::TwoContent,
        LayoutType::Comparison,
        LayoutType::TitleOnly,
        LayoutType::Blank,
        LayoutType::ContentWithCaption,
        LayoutType::PictureWithCaption,
        LayoutType::TitleAndVerticalText,
        LayoutType::VerticalTitleAndText,
    ];
    for (i, layout_type) in layouts.iter().enumerate() {
        let layout = SlideLayoutPart::new(i + 1, *layout_type);
        if i < 3 {
            println!("   │   ├── {}: {} ({})", i + 1, layout_type.name(), layout.path());
        }
    }
    println!("   │   └── ... and {} more layout types", layouts.len() - 3);
    
    // SlideMasterPart
    println!("   ├── SlideMasterPart:");
    let mut master = SlideMasterPart::new(1);
    master.set_name("Custom Master");
    master.add_layout_rel_id("rId2");
    master.add_layout_rel_id("rId3");
    println!("   │   ├── Name: {}", master.name());
    println!("   │   ├── Path: {}", master.path());
    println!("   │   └── Layouts: {} linked", master.layout_rel_ids().len());
    
    // ThemePart - Colors and Fonts
    println!("   ├── ThemePart (colors & fonts):");
    let mut theme = ThemePart::new(1);
    theme.set_name("Corporate Theme");
    theme.set_major_font("Arial");
    theme.set_minor_font("Calibri");
    theme.set_color("accent1", "FF5733");
    theme.set_color("accent2", "33FF57");
    let theme_xml = theme.to_xml()?;
    println!("   │   ├── Name: {}", theme.name());
    println!("   │   ├── Major Font: Arial");
    println!("   │   ├── Minor Font: Calibri");
    println!("   │   └── XML size: {} bytes", theme_xml.len());
    
    // NotesSlidePart - Speaker notes
    println!("   ├── NotesSlidePart (speaker notes):");
    let notes = NotesSlidePart::with_text(1, "Remember to:\n- Introduce yourself\n- Explain the agenda\n- Ask for questions");
    let notes_xml = notes.to_xml()?;
    println!("   │   ├── Path: {}", notes.path());
    println!("   │   ├── Text: \"{}...\"", &notes.notes_text()[..20.min(notes.notes_text().len())]);
    println!("   │   └── XML size: {} bytes", notes_xml.len());
    
    // AppPropertiesPart - Application metadata
    println!("   ├── AppPropertiesPart (metadata):");
    let mut app_props = AppPropertiesPart::new();
    app_props.set_company("Acme Corporation");
    app_props.set_slides(slides.len() as u32);
    let app_xml = app_props.to_xml()?;
    println!("   │   ├── Company: Acme Corporation");
    println!("   │   ├── Slides: {}", slides.len());
    println!("   │   └── XML size: {} bytes", app_xml.len());
    
    // MediaPart - Video/Audio formats
    println!("   ├── MediaPart (10 media formats):");
    println!("   │   ├── Video: mp4, webm, avi, wmv, mov");
    println!("   │   ├── Audio: mp3, wav, wma, m4a, ogg");
    let sample_media = MediaPart::new(1, MediaFormat::Mp4, vec![0; 100]);
    println!("   │   └── Sample: {} ({})", sample_media.path(), sample_media.format().mime_type());
    
    // TablePart - Table with formatting
    println!("   ├── TablePart (cell formatting):");
    let table_part = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Header 1").bold().background("4472C4"),
            TableCellPart::new("Header 2").bold().background("4472C4"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Data 1").color("333333"),
            TableCellPart::new("Data 2").italic(),
        ]))
        .position(EMU_PER_INCH, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 6, EMU_PER_INCH * 2);
    let table_xml = table_part.to_slide_xml(10);
    println!("   │   ├── Rows: {}", table_part.rows.len());
    println!("   │   ├── Features: bold, italic, colors, backgrounds");
    println!("   │   └── XML size: {} bytes", table_xml.len());
    
    // ContentTypesPart
    println!("   └── ContentTypesPart:");
    let mut content_types = ContentTypesPart::new();
    content_types.add_presentation();
    content_types.add_slide(1);
    content_types.add_slide_layout(1);
    content_types.add_slide_master(1);
    content_types.add_theme(1);
    content_types.add_core_properties();
    content_types.add_app_properties();
    let ct_xml = content_types.to_xml()?;
    println!("       ├── Path: {}", content_types.path());
    println!("       └── XML size: {} bytes", ct_xml.len());

    // =========================================================================
    // NEW: Elements API Demonstration
    // =========================================================================
    println!("\n🎨 Elements API Demonstration:");
    
    // Color types
    println!("   ┌── Color Types:");
    let rgb = RgbColor::new(255, 87, 51);
    let rgb_hex = RgbColor::from_hex("#4472C4").unwrap();
    let scheme = SchemeColor::Accent1;
    let color = Color::rgb(100, 149, 237);
    println!("   │   ├── RgbColor::new(255, 87, 51) → {}", rgb.to_hex());
    println!("   │   ├── RgbColor::from_hex(\"#4472C4\") → {}", rgb_hex.to_hex());
    println!("   │   ├── SchemeColor::Accent1 → {}", scheme.as_str());
    println!("   │   └── Color::rgb(100, 149, 237) → XML: {}", color.to_xml().chars().take(30).collect::<String>());
    
    // Position and Size
    println!("   ├── Position & Size (EMU units):");
    let pos = Position::from_inches(1.0, 2.0);
    let size = Size::from_inches(4.0, 3.0);
    println!("   │   ├── Position::from_inches(1.0, 2.0) → x={}, y={}", pos.x, pos.y);
    println!("   │   ├── Size::from_inches(4.0, 3.0) → w={}, h={}", size.width, size.height);
    println!("   │   └── EMU_PER_INCH = {}", EMU_PER_INCH);
    
    // Transform
    println!("   └── Transform (position + size + rotation):");
    let transform = Transform::from_inches(1.0, 1.5, 3.0, 2.0).with_rotation(45.0);
    let transform_xml = transform.to_xml();
    println!("       ├── Transform::from_inches(1.0, 1.5, 3.0, 2.0)");
    println!("       ├── .with_rotation(45.0)");
    println!("       └── XML: {}...", &transform_xml[..50.min(transform_xml.len())]);

    // =========================================================================
    // NEW: Advanced Features Demonstration
    // =========================================================================
    println!("\n🚀 Advanced Features Demonstration:");

    // -------------------------------------------------------------------------
    // Complex Table Examples
    // -------------------------------------------------------------------------
    println!("   ┌── Complex Table Examples:");
    
    // Example 1: Financial Report Table
    println!("   │   ┌── Financial Report Table (5x4 with formatting):");
    let financial_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Q1 2024 Financial Summary")
                .col_span(4)
                .bold()
                .center()
                .background("1F4E79")
                .color("FFFFFF")
                .font_size(14)
                .font("Arial Black"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Category").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Revenue").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Expenses").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Profit").bold().center().background("2E75B6").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Product Sales").align(HorizontalAlign::Left),
            TableCellPart::new("$1,250,000").align(HorizontalAlign::Right).color("2E7D32"),
            TableCellPart::new("$450,000").align(HorizontalAlign::Right).color("C62828"),
            TableCellPart::new("$800,000").align(HorizontalAlign::Right).bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Services").align(HorizontalAlign::Left),
            TableCellPart::new("$890,000").align(HorizontalAlign::Right).color("2E7D32"),
            TableCellPart::new("$320,000").align(HorizontalAlign::Right).color("C62828"),
            TableCellPart::new("$570,000").align(HorizontalAlign::Right).bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Total").bold().background("E7E6E6"),
            TableCellPart::new("$2,140,000").bold().align(HorizontalAlign::Right).background("E7E6E6"),
            TableCellPart::new("$770,000").bold().align(HorizontalAlign::Right).background("E7E6E6"),
            TableCellPart::new("$1,370,000").bold().align(HorizontalAlign::Right).background("C6EFCE").color("006100"),
        ]))
        .position(EMU_PER_INCH / 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 8, EMU_PER_INCH * 3);
    let fin_xml = financial_table.to_slide_xml(100);
    println!("   │   │   ├── Merged header spanning 4 columns");
    println!("   │   │   ├── Color-coded values (green=positive, red=negative)");
    println!("   │   │   ├── Custom fonts and sizes");
    println!("   │   │   └── XML: {} bytes", fin_xml.len());

    // Example 2: Comparison Matrix
    println!("   │   ├── Comparison Matrix (features vs products):");
    let matrix_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Feature").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Basic").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Pro").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Enterprise").bold().center().background("4472C4").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Storage").align(HorizontalAlign::Left),
            TableCellPart::new("5 GB").center(),
            TableCellPart::new("50 GB").center(),
            TableCellPart::new("Unlimited").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Users").align(HorizontalAlign::Left),
            TableCellPart::new("1").center(),
            TableCellPart::new("10").center(),
            TableCellPart::new("Unlimited").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Support").align(HorizontalAlign::Left),
            TableCellPart::new("Email").center(),
            TableCellPart::new("24/7 Chat").center(),
            TableCellPart::new("Dedicated").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Price/mo").bold().background("F2F2F2"),
            TableCellPart::new("$9").center().bold().background("F2F2F2"),
            TableCellPart::new("$29").center().bold().background("F2F2F2"),
            TableCellPart::new("$99").center().bold().background("F2F2F2"),
        ]));
    println!("   │   │   └── 5x4 matrix with alternating styles");

    // Example 3: Schedule/Timeline Table
    println!("   │   └── Schedule Table (with row spans):");
    let schedule_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Time").bold().center().background("70AD47").color("FFFFFF"),
            TableCellPart::new("Monday").bold().center().background("70AD47").color("FFFFFF"),
            TableCellPart::new("Tuesday").bold().center().background("70AD47").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("9:00 AM").center().background("E2EFDA"),
            TableCellPart::new("Team Standup").center().row_span(2).valign(VerticalAlign::Middle).background("BDD7EE"),
            TableCellPart::new("Code Review").center(),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("10:00 AM").center().background("E2EFDA"),
            TableCellPart::merged(),
            TableCellPart::new("Sprint Planning").center().background("FCE4D6"),
        ]));
    println!("   │       └── Row spans for multi-hour events");

    // -------------------------------------------------------------------------
    // Complex Animation Sequences
    // -------------------------------------------------------------------------
    println!("   ├── Complex Animation Sequences:");
    
    // Sequence 1: Title entrance with staggered content
    println!("   │   ┌── Staggered Entrance Sequence:");
    let title_anim = Animation::new(2, AnimationEffect::Fade)
        .trigger(AnimationTrigger::OnClick)
        .duration(500);
    let content1 = Animation::new(3, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(200);
    let content2 = Animation::new(4, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(100);
    let content3 = Animation::new(5, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(100);
    let staggered = SlideAnimations::new()
        .add(title_anim)
        .add(content1)
        .add(content2)
        .add(content3)
        .transition(SlideTransition::new(TransitionEffect::Push).direction(AnimationDirection::Left).duration(750));
    let staggered_xml = staggered.to_timing_xml()?;
    println!("   │   │   ├── Title: Fade on click");
    println!("   │   │   ├── Content 1-3: FlyIn with 100ms stagger");
    println!("   │   │   ├── Transition: Push from left (750ms)");
    println!("   │   │   └── XML: {} bytes", staggered_xml.len());

    // Sequence 2: Emphasis and exit
    println!("   │   ├── Emphasis + Exit Sequence:");
    let emphasis = Animation::new(6, AnimationEffect::Pulse)
        .trigger(AnimationTrigger::OnClick)
        .duration(1000)
        .repeat(3);
    let exit = Animation::new(6, AnimationEffect::FadeOut)
        .trigger(AnimationTrigger::AfterPrevious)
        .duration(500);
    let emphasis_seq = SlideAnimations::new()
        .add(emphasis)
        .add(exit);
    println!("   │   │   ├── Pulse 3x on click, then fade out");
    println!("   │   │   └── Same shape, sequential effects");

    // Sequence 3: Motion path
    println!("   │   └── Motion Path Animation:");
    let motion = Animation::new(7, AnimationEffect::Lines)
        .trigger(AnimationTrigger::OnClick)
        .duration(2000);
    println!("   │       └── Custom path: Lines, Arcs, Turns, Loops");

    // -------------------------------------------------------------------------
    // SmartArt Combinations
    // -------------------------------------------------------------------------
    println!("   ├── SmartArt Layout Examples:");
    
    // Process flow
    println!("   │   ┌── Process Flow (5 steps):");
    let process = SmartArtPart::new(1, SmartArtLayout::BasicProcess)
        .add_items(vec!["Research", "Design", "Develop", "Test", "Deploy"])
        .position(EMU_PER_INCH / 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 8, EMU_PER_INCH * 2);
    println!("   │   │   └── {} nodes in horizontal flow", process.nodes().len());

    // Organization chart
    println!("   │   ├── Organization Chart:");
    let org = SmartArtPart::new(2, SmartArtLayout::OrgChart)
        .add_items(vec!["CEO", "CTO", "CFO", "VP Engineering", "VP Sales"]);
    println!("   │   │   └── Hierarchical structure with {} positions", org.nodes().len());

    // Cycle diagram
    println!("   │   ├── Cycle Diagram:");
    let cycle = SmartArtPart::new(3, SmartArtLayout::BasicCycle)
        .add_items(vec!["Plan", "Do", "Check", "Act"]);
    println!("   │   │   └── PDCA cycle with {} phases", cycle.nodes().len());

    // Venn diagram
    println!("   │   ├── Venn Diagram:");
    let venn = SmartArtPart::new(4, SmartArtLayout::BasicVenn)
        .add_items(vec!["Skills", "Passion", "Market Need"]);
    println!("   │   │   └── 3-circle Venn for Ikigai concept");

    // Pyramid
    println!("   │   └── Pyramid:");
    let pyramid = SmartArtPart::new(5, SmartArtLayout::BasicPyramid)
        .add_items(vec!["Self-Actualization", "Esteem", "Love/Belonging", "Safety", "Physiological"]);
    println!("   │       └── Maslow's hierarchy with {} levels", pyramid.nodes().len());

    // -------------------------------------------------------------------------
    // 3D Model Configurations
    // -------------------------------------------------------------------------
    println!("   ├── 3D Model Configurations:");
    
    // Product showcase
    println!("   │   ┌── Product Showcase:");
    let product_3d = Model3DPart::new(1, Model3DFormat::Glb, vec![0; 100])
        .camera(CameraPreset::IsometricTopUp)
        .rotation(0.0, 45.0, 0.0)
        .zoom(1.2)
        .position(EMU_PER_INCH * 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 4, EMU_PER_INCH * 4);
    println!("   │   │   ├── Camera: Isometric top-up view");
    println!("   │   │   ├── Rotation: 45° Y-axis for best angle");
    println!("   │   │   └── Zoom: 1.2x for detail");

    // Architectural model
    println!("   │   ├── Architectural Model:");
    let arch_3d = Model3DPart::new(2, Model3DFormat::Gltf, vec![0; 100])
        .camera(CameraPreset::Front)
        .rotation(15.0, -30.0, 0.0)
        .ambient_light("FFFFCC");
    println!("   │   │   ├── Camera: Front view with tilt");
    println!("   │   │   └── Ambient: Warm lighting (FFFFCC)");

    // Technical diagram
    println!("   │   └── Technical Diagram:");
    let tech_3d = Model3DPart::new(3, Model3DFormat::Obj, vec![0; 100])
        .camera(CameraPreset::IsometricOffAxis1Top)
        .rotation(0.0, 0.0, 0.0);
    println!("   │       └── Camera: Off-axis isometric for exploded view");

    // -------------------------------------------------------------------------
    // Theme + Master + Layout Combination
    // -------------------------------------------------------------------------
    println!("   ├── Theme + Master + Layout Integration:");
    
    // Corporate theme
    let mut corp_theme = ThemePart::new(1);
    corp_theme.set_name("Corporate Blue");
    corp_theme.set_major_font("Segoe UI");
    corp_theme.set_minor_font("Segoe UI Light");
    corp_theme.set_color("dk1", "000000");
    corp_theme.set_color("lt1", "FFFFFF");
    corp_theme.set_color("dk2", "1F497D");
    corp_theme.set_color("lt2", "EEECE1");
    corp_theme.set_color("accent1", "4472C4");
    corp_theme.set_color("accent2", "ED7D31");
    corp_theme.set_color("accent3", "A5A5A5");
    corp_theme.set_color("accent4", "FFC000");
    corp_theme.set_color("accent5", "5B9BD5");
    corp_theme.set_color("accent6", "70AD47");
    let theme_xml = corp_theme.to_xml()?;
    println!("   │   ├── Theme: Corporate Blue");
    println!("   │   │   ├── Fonts: Segoe UI / Segoe UI Light");
    println!("   │   │   ├── 12 color slots defined");
    println!("   │   │   └── XML: {} bytes", theme_xml.len());

    // Master with multiple layouts
    let mut corp_master = SlideMasterPart::new(1);
    corp_master.set_name("Corporate Master");
    corp_master.add_layout_rel_id("rId2"); // Title
    corp_master.add_layout_rel_id("rId3"); // Title + Content
    corp_master.add_layout_rel_id("rId4"); // Section Header
    corp_master.add_layout_rel_id("rId5"); // Two Content
    corp_master.add_layout_rel_id("rId6"); // Comparison
    corp_master.add_layout_rel_id("rId7"); // Title Only
    corp_master.add_layout_rel_id("rId8"); // Blank
    println!("   │   └── Master: {} with {} layouts linked", corp_master.name(), corp_master.layout_rel_ids().len());

    // -------------------------------------------------------------------------
    // VBA + Custom XML Integration
    // -------------------------------------------------------------------------
    println!("   ├── VBA + Custom XML Integration:");
    
    // VBA with multiple modules
    let vba_project = VbaProjectPart::new()
        .add_module(VbaModule::new("AutoRun", r#"
Sub Auto_Open()
    MsgBox "Welcome to the presentation!"
End Sub

Sub NavigateToSlide(slideNum As Integer)
    SlideShowWindows(1).View.GotoSlide slideNum
End Sub
"#))
        .add_module(VbaModule::new("DataHelpers", r#"
Function GetCustomData(key As String) As String
    ' Read from Custom XML part
    GetCustomData = ActivePresentation.CustomXMLParts(1).SelectSingleNode("//" & key).Text
End Function
"#))
        .add_module(VbaModule::class("SlideController", r#"
Private currentSlide As Integer

Public Sub NextSlide()
    currentSlide = currentSlide + 1
    NavigateToSlide currentSlide
End Sub
"#));
    println!("   │   ├── VBA Project:");
    println!("   │   │   ├── AutoRun: Auto_Open, NavigateToSlide");
    println!("   │   │   ├── DataHelpers: GetCustomData (reads Custom XML)");
    println!("   │   │   └── SlideController: Class for navigation");

    // Custom XML with structured data
    let app_config = CustomXmlPart::new(1, "presentationConfig")
        .namespace("http://company.com/pptx/config")
        .property("version", "2.1.0")
        .property("author", "Demo User")
        .property("department", "Engineering")
        .property("confidentiality", "Internal")
        .property("lastModified", "2024-01-15T10:30:00Z");
    let config_xml = app_config.to_xml()?;
    println!("   │   └── Custom XML:");
    println!("   │       ├── Namespace: http://company.com/pptx/config");
    println!("   │       ├── Properties: version, author, department, etc.");
    println!("   │       └── XML: {} bytes", config_xml.len());

    // -------------------------------------------------------------------------
    // Embedded Fonts with Variants
    // -------------------------------------------------------------------------
    println!("   ├── Embedded Font Collection:");
    let mut font_collection = EmbeddedFontCollection::new();
    font_collection.add("Corporate Sans", vec![0; 1000]);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::Bold);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::Italic);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::BoldItalic);
    font_collection.add("Code Mono", vec![0; 800]);
    let fonts_xml = font_collection.to_xml();
    println!("   │   ├── Corporate Sans: Regular, Bold, Italic, BoldItalic");
    println!("   │   ├── Code Mono: Regular");
    println!("   │   ├── Total: {} font files", font_collection.len());
    println!("   │   └── XML: {} bytes", fonts_xml.len());

    // -------------------------------------------------------------------------
    // Handout with Full Configuration
    // -------------------------------------------------------------------------
    println!("   └── Handout Master Configuration:");
    let handout = HandoutMasterPart::new()
        .layout(HandoutLayout::SlidesPerPage6)
        .header("Q1 2024 Strategy Review")
        .footer("Confidential - Internal Use Only");
    let handout_xml = handout.to_xml()?;
    println!("       ├── Layout: 6 slides per page");
    println!("       ├── Header: Q1 2024 Strategy Review");
    println!("       ├── Footer: Confidential - Internal Use Only");
    println!("       └── XML: {} bytes", handout_xml.len());

    // =========================================================================
    // Summary
    // =========================================================================
    println!("\n╔══════════════════════════════════════════════════════════════╗");
    println!("║                    Element Coverage Summary                   ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  LAYOUTS (6 types):                                          ║");
    println!("║    ✓ CenteredTitle    ✓ TitleOnly      ✓ TitleAndContent     ║");
    println!("║    ✓ TitleAndBigContent  ✓ TwoColumn   ✓ Blank               ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  TEXT FORMATTING:                                            ║");
    println!("║    ✓ Bold            ✓ Italic         ✓ Underline            ║");
    println!("║    ✓ Font Size       ✓ Font Color     ✓ Title/Content styles ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  TABLES:                                                     ║");
    println!("║    ✓ Multiple rows/columns  ✓ Bold cells  ✓ Background colors║");
    println!("║    ✓ Header styling         ✓ Position control               ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  CHARTS:                                                     ║");
    println!("║    ✓ Bar Chart       ✓ Line Chart     ✓ Pie Chart            ║");
    println!("║    ✓ Multiple series ✓ Categories                            ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  SHAPES:                                                     ║");
    println!("║    ✓ Rectangle       ✓ Ellipse        ✓ RoundedRectangle     ║");
    println!("║    ✓ Triangle        ✓ Diamond        ✓ Color fills          ║");
    println!("║    ✓ Gradient fills  ✓ Transparency   ✓ Text in shapes       ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  CONNECTORS (NEW):                                           ║");
    println!("║    ✓ Straight        ✓ Elbow          ✓ Curved               ║");
    println!("║    ✓ Arrow types     ✓ Dash styles    ✓ Line colors/widths   ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  IMAGES:                                                     ║");
    println!("║    ✓ Image placeholders  ✓ Position   ✓ Dimensions           ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  PACKAGE:                                                    ║");
    println!("║    ✓ Create PPTX     ✓ Read PPTX      ✓ Analyze contents     ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  PARTS API (NEW):                                            ║");
    println!("║    ✓ SlideLayoutPart (11 types)  ✓ SlideMasterPart           ║");
    println!("║    ✓ ThemePart (colors/fonts)    ✓ NotesSlidePart            ║");
    println!("║    ✓ AppPropertiesPart           ✓ MediaPart (10 formats)    ║");
    println!("║    ✓ TablePart (cell formatting) ✓ ContentTypesPart          ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  ELEMENTS API:                                               ║");
    println!("║    ✓ RgbColor        ✓ SchemeColor    ✓ Color enum           ║");
    println!("║    ✓ Position        ✓ Size           ✓ Transform            ║");
    println!("║    ✓ EMU conversions (inches, cm, mm, pt)                    ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  ADVANCED FEATURES (NEW):                                    ║");
    println!("║    ✓ Animation (50+ effects)  ✓ Transitions (27 types)       ║");
    println!("║    ✓ SmartArt (25 layouts)    ✓ 3D Models (GLB/GLTF/OBJ)     ║");
    println!("║    ✓ VBA Macros (.pptm)       ✓ Embedded Fonts               ║");
    println!("║    ✓ Custom XML               ✓ Handout Master               ║");
    println!("║    ✓ Table borders/alignment  ✓ Merged cells                 ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  Output: comprehensive_demo.pptx ({} slides, {} KB)         ║", 
             slides.len(), pptx_data.len() / 1024);
    println!("╚══════════════════════════════════════════════════════════════╝");

    Ok(())
}

pub fn with_images(self, images: Vec<Image>) -> Self

Add multiple images to the slide

pub fn notes(self, notes: &str) -> Self

Add speaker notes to the slide

Examples found in repository

examples/test_notes.rs (line 14)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    println!("Creating test presentation with speaker notes...");
    
    let slides = vec![
        SlideContent::new("Slide 1 - With Notes")
            .layout(SlideLayout::CenteredTitle)
            .title_size(54)
            .title_bold(true)
            .notes("This is a speaker note for slide 1. It should appear in presenter view."),
        
        SlideContent::new("Slide 2 - Also With Notes")
            .add_bullet("Bullet point 1")
            .add_bullet("Bullet point 2")
            .add_bullet("Bullet point 3")
            .notes("Notes for slide 2 with bullet points."),
        
        SlideContent::new("Slide 3 - No Notes")
            .add_bullet("This slide has no notes"),
        
        SlideContent::new("Slide 4 - More Notes")
            .layout(SlideLayout::TwoColumn)
            .add_bullet("Left 1")
            .add_bullet("Left 2")
            .add_bullet("Right 1")
            .add_bullet("Right 2")
            .notes("Two column layout with speaker notes."),
    ];
    
    let pptx_data = create_pptx_with_content("Test Notes", slides)?;
    fs::write("test_notes.pptx", &pptx_data)?;
    println!("Created test_notes.pptx ({} bytes)", pptx_data.len());
    println!("\nOpen in PowerPoint and check presenter view for notes!");
    
    Ok(())
}

examples/comprehensive_demo.rs (line 839)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    println!("╔══════════════════════════════════════════════════════════════╗");
    println!("║       PPTX-RS Element Showcase - Complete Coverage           ║");
    println!("╚══════════════════════════════════════════════════════════════╝\n");

    let mut slides = Vec::new();

    // =========================================================================
    // SLIDE 1: CenteredTitle Layout + Title Formatting
    // =========================================================================
    println!("📐 Slide 1: CenteredTitle Layout + Title Formatting");
    slides.push(
        SlideContent::new("PPTX-RS Element Showcase")
            .layout(SlideLayout::CenteredTitle)
            .title_size(54)
            .title_bold(true)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 2: TitleOnly Layout
    // =========================================================================
    println!("📐 Slide 2: TitleOnly Layout");
    slides.push(
        SlideContent::new("Section: Slide Layouts")
            .layout(SlideLayout::TitleOnly)
            .title_size(48)
            .title_bold(true)
            .title_color("C0504D")
    );

    // =========================================================================
    // SLIDE 3: TitleAndContent Layout + All Text Formatting
    // =========================================================================
    println!("📝 Slide 3: TitleAndContent + Text Formatting");
    slides.push(
        SlideContent::new("Text Formatting Options")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .title_italic(true)
            .title_underline(true)
            .title_size(44)
            .add_bullet("Normal text (default)")
            .add_bullet("Bold content text")
            .add_bullet("Italic content text")
            .add_bullet("Underlined content")
            .add_bullet("Custom font size (28pt)")
            .add_bullet("Custom color (#4F81BD)")
            .content_bold(true)
            .content_italic(true)
            .content_underline(true)
            .content_size(28)
            .content_color("4F81BD")
    );

    // =========================================================================
    // SLIDE 4: TitleAndBigContent Layout
    // =========================================================================
    println!("📐 Slide 4: TitleAndBigContent Layout");
    slides.push(
        SlideContent::new("Key Highlights")
            .layout(SlideLayout::TitleAndBigContent)
            .title_color("1F497D")
            .add_bullet("Large content area for emphasis")
            .add_bullet("Perfect for key messages")
            .add_bullet("Smaller title, bigger content")
            .content_bold(true)
            .content_size(32)
    );

    // =========================================================================
    // SLIDE 5: TwoColumn Layout
    // =========================================================================
    println!("📐 Slide 5: TwoColumn Layout");
    slides.push(
        SlideContent::new("Two Column Comparison")
            .layout(SlideLayout::TwoColumn)
            .title_color("1F497D")
            .add_bullet("Left Column Item 1")
            .add_bullet("Left Column Item 2")
            .add_bullet("Left Column Item 3")
            .add_bullet("Right Column Item 1")
            .add_bullet("Right Column Item 2")
            .add_bullet("Right Column Item 3")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 6: Blank Layout
    // =========================================================================
    println!("📐 Slide 6: Blank Layout");
    slides.push(
        SlideContent::new("")
            .layout(SlideLayout::Blank)
    );

    // =========================================================================
    // SLIDE 7: Table with All Cell Styling Options
    // =========================================================================
    println!("📊 Slide 7: Table with Cell Styling");
    let styled_table = TableBuilder::new(vec![1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Header 1").bold().background_color("1F497D"),
            TableCell::new("Header 2").bold().background_color("4F81BD"),
            TableCell::new("Header 3").bold().background_color("8064A2"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Bold Cell").bold(),
            TableCell::new("Normal Cell"),
            TableCell::new("Colored").background_color("9BBB59"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Red BG").background_color("C0504D"),
            TableCell::new("Green BG").background_color("9BBB59"),
            TableCell::new("Blue BG").background_color("4F81BD"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Row 3 Col 1"),
            TableCell::new("Row 3 Col 2"),
            TableCell::new("Row 3 Col 3").bold().background_color("F79646"),
        ]))
        .position(500000, 1800000)
        .build();
    
    slides.push(
        SlideContent::new("Table with Cell Styling")
            .table(styled_table)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 8: Charts (Bar, Line, Pie)
    // =========================================================================
    println!("📈 Slide 8: Chart Types");
    
    // Create chart data structures (for demonstration)
    let _bar_chart = ChartBuilder::new("Sales by Region", ChartType::Bar)
        .categories(vec!["North", "South", "East", "West"])
        .add_series(ChartSeries::new("2023", vec![100.0, 80.0, 120.0, 90.0]))
        .add_series(ChartSeries::new("2024", vec![120.0, 95.0, 140.0, 110.0]))
        .build();
    
    let _line_chart = ChartBuilder::new("Monthly Trend", ChartType::Line)
        .categories(vec!["Jan", "Feb", "Mar", "Apr", "May", "Jun"])
        .add_series(ChartSeries::new("Revenue", vec![10.0, 12.0, 15.0, 14.0, 18.0, 22.0]))
        .build();
    
    let _pie_chart = ChartBuilder::new("Market Share", ChartType::Pie)
        .categories(vec!["Product A", "Product B", "Product C", "Others"])
        .add_series(ChartSeries::new("Share", vec![40.0, 30.0, 20.0, 10.0]))
        .build();
    
    slides.push(
        SlideContent::new("Chart Types: Bar, Line, Pie")
            .with_chart()
            .title_color("1F497D")
            .add_bullet("Bar Chart: Compare categories")
            .add_bullet("Line Chart: Show trends over time")
            .add_bullet("Pie Chart: Show proportions")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 9: Shapes with Different Fills
    // =========================================================================
    println!("🔷 Slide 9: Shapes with Fills");
    
    let rect = Shape::new(ShapeType::Rectangle, 500000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("4F81BD"))
        .with_text("Rectangle");
    
    let ellipse = Shape::new(ShapeType::Ellipse, 3000000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("9BBB59"))
        .with_text("Ellipse");
    
    let rounded = Shape::new(ShapeType::RoundedRectangle, 5500000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("C0504D"))
        .with_text("Rounded");
    
    let triangle = Shape::new(ShapeType::Triangle, 1500000, 3000000, 1500000, 1200000)
        .with_fill(ShapeFill::new("8064A2"))
        .with_text("Triangle");
    
    let diamond = Shape::new(ShapeType::Diamond, 4000000, 3000000, 1500000, 1200000)
        .with_fill(ShapeFill::new("F79646"))
        .with_text("Diamond");
    
    slides.push(
        SlideContent::new("Shape Types with Color Fills")
            .add_shape(rect)
            .add_shape(ellipse)
            .add_shape(rounded)
            .add_shape(triangle)
            .add_shape(diamond)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 10: Gradient Fills (NEW)
    // =========================================================================
    println!("🌈 Slide 10: Gradient Fills");
    
    // Horizontal gradient
    let gradient_h = Shape::new(ShapeType::Rectangle, 500000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("1565C0", "42A5F5", GradientDirection::Horizontal))
        .with_text("Horizontal");
    
    // Vertical gradient
    let gradient_v = Shape::new(ShapeType::Rectangle, 3200000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("2E7D32", "81C784", GradientDirection::Vertical))
        .with_text("Vertical");
    
    // Diagonal gradient
    let gradient_d = Shape::new(ShapeType::RoundedRectangle, 5900000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("C62828", "EF9A9A", GradientDirection::DiagonalDown))
        .with_text("Diagonal");
    
    // Three-color gradient
    let gradient_3 = Shape::new(ShapeType::Ellipse, 1800000, 3200000, 2500000, 1200000)
        .with_gradient(GradientFill::three_color("FF6F00", "FFC107", "FFEB3B", GradientDirection::Horizontal))
        .with_text("3-Color");
    
    // Custom angle gradient
    let gradient_angle = Shape::new(ShapeType::RoundedRectangle, 4800000, 3200000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("7B1FA2", "E1BEE7", GradientDirection::Angle(135)))
        .with_text("135° Angle");
    
    slides.push(
        SlideContent::new("Gradient Fills - Multiple Directions")
            .add_shape(gradient_h)
            .add_shape(gradient_v)
            .add_shape(gradient_d)
            .add_shape(gradient_3)
            .add_shape(gradient_angle)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 11: Transparency (NEW)
    // =========================================================================
    println!("👻 Slide 11: Transparency Effects");
    
    // Base shape (fully opaque)
    let base = Shape::new(ShapeType::Rectangle, 1000000, 1800000, 3000000, 2000000)
        .with_fill(ShapeFill::new("1565C0"))
        .with_text("Base (100%)");
    
    // 25% transparent overlay
    let trans_25 = Shape::new(ShapeType::Rectangle, 2000000, 2200000, 2500000, 1500000)
        .with_fill(ShapeFill::new("F44336").with_transparency(25))
        .with_line(ShapeLine::new("B71C1C", 25400))
        .with_text("25% Transparent");
    
    // 50% transparent overlay
    let trans_50 = Shape::new(ShapeType::Ellipse, 4500000, 1800000, 2500000, 2000000)
        .with_fill(ShapeFill::new("4CAF50").with_transparency(50))
        .with_line(ShapeLine::new("1B5E20", 25400))
        .with_text("50% Transparent");
    
    // 75% transparent overlay
    let trans_75 = Shape::new(ShapeType::RoundedRectangle, 5500000, 2500000, 2500000, 1500000)
        .with_fill(ShapeFill::new("FF9800").with_transparency(75))
        .with_line(ShapeLine::new("E65100", 25400))
        .with_text("75% Transparent");
    
    slides.push(
        SlideContent::new("Transparency Effects - Overlapping Shapes")
            .add_shape(base)
            .add_shape(trans_25)
            .add_shape(trans_50)
            .add_shape(trans_75)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 12: Styled Connectors (NEW)
    // =========================================================================
    println!("🔗 Slide 12: Styled Connectors");
    
    // Create shapes to connect
    let box1 = Shape::new(ShapeType::RoundedRectangle, 500000, 1800000, 1800000, 800000)
        .with_id(100)
        .with_fill(ShapeFill::new("1565C0"))
        .with_text("Start");
    
    let box2 = Shape::new(ShapeType::RoundedRectangle, 3500000, 1800000, 1800000, 800000)
        .with_id(101)
        .with_fill(ShapeFill::new("2E7D32"))
        .with_text("Process");
    
    let box3 = Shape::new(ShapeType::RoundedRectangle, 6500000, 1800000, 1800000, 800000)
        .with_id(102)
        .with_fill(ShapeFill::new("C62828"))
        .with_text("End");
    
    // Straight connector with arrow
    let conn1 = Connector::straight(2300000, 2200000, 3500000, 2200000)
        .with_line(ConnectorLine::new("1565C0", 25400))
        .with_end_arrow(ArrowType::Triangle)
        .with_arrow_size(ArrowSize::Large);
    
    // Elbow connector with stealth arrow
    let conn2 = Connector::elbow(5300000, 2200000, 6500000, 2200000)
        .with_line(ConnectorLine::new("2E7D32", 38100).with_dash(LineDash::Dash))
        .with_end_arrow(ArrowType::Stealth)
        .with_arrow_size(ArrowSize::Medium);
    
    // Curved connector examples
    let box4 = Shape::new(ShapeType::Ellipse, 1000000, 3200000, 1500000, 800000)
        .with_id(103)
        .with_fill(ShapeFill::new("7B1FA2"))
        .with_text("A");
    
    let box5 = Shape::new(ShapeType::Ellipse, 4000000, 3200000, 1500000, 800000)
        .with_id(104)
        .with_fill(ShapeFill::new("00838F"))
        .with_text("B");
    
    let box6 = Shape::new(ShapeType::Ellipse, 7000000, 3200000, 1500000, 800000)
        .with_id(105)
        .with_fill(ShapeFill::new("EF6C00"))
        .with_text("C");
    
    // Curved connector with diamond arrow
    let conn3 = Connector::curved(2500000, 3600000, 4000000, 3600000)
        .with_line(ConnectorLine::new("7B1FA2", 19050).with_dash(LineDash::DashDot))
        .with_arrows(ArrowType::Oval, ArrowType::Diamond);
    
    // Dotted connector
    let conn4 = Connector::straight(5500000, 3600000, 7000000, 3600000)
        .with_line(ConnectorLine::new("00838F", 12700).with_dash(LineDash::Dot))
        .with_end_arrow(ArrowType::Open);
    
    slides.push(
        SlideContent::new("Styled Connectors - Types, Arrows, Dashes")
            .add_shape(box1)
            .add_shape(box2)
            .add_shape(box3)
            .add_shape(box4)
            .add_shape(box5)
            .add_shape(box6)
            .add_connector(conn1)
            .add_connector(conn2)
            .add_connector(conn3)
            .add_connector(conn4)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 13: Images
    // =========================================================================
    println!("🖼️  Slide 13: Image Placeholders");
    
    let img1 = Image::new("logo.png", 2500000, 1800000, "png")
        .position(500000, 1600000);
    let img2 = Image::new("photo.jpg", 2500000, 1800000, "jpg")
        .position(3500000, 1600000);
    let img3 = Image::new("diagram.png", 2000000, 1800000, "png")
        .position(6500000, 1600000);
    
    slides.push(
        SlideContent::new("Image Placeholders")
            .add_image(img1)
            .add_image(img2)
            .add_image(img3)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 11: Advanced Table with Borders & Alignment (NEW)
    // =========================================================================
    println!("📊 Slide 11: Advanced Table (borders, alignment, merged cells)");
    
    // Build advanced table using generator's TableBuilder with alignment
    let advanced_table = TableBuilder::new(vec![2000000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2024 Financial Report").bold().background_color("1F4E79").text_color("FFFFFF").align_center().font_size(14),
            TableCell::new("").background_color("1F4E79"),
            TableCell::new("").background_color("1F4E79"),
            TableCell::new("").background_color("1F4E79"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Category").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Revenue").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Expenses").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Profit").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Product Sales").text_color("000000").align_left(),
            TableCell::new("$1,250,000").text_color("2E7D32").align_right(),
            TableCell::new("$450,000").text_color("C62828").align_right(),
            TableCell::new("$800,000").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Services").text_color("000000").align_left(),
            TableCell::new("$890,000").text_color("2E7D32").align_right(),
            TableCell::new("$320,000").text_color("C62828").align_right(),
            TableCell::new("$570,000").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Total").bold().background_color("E7E6E6").text_color("000000").align_left(),
            TableCell::new("$2,140,000").bold().background_color("E7E6E6").text_color("000000").align_right(),
            TableCell::new("$770,000").bold().background_color("E7E6E6").text_color("000000").align_right(),
            TableCell::new("$1,370,000").bold().background_color("C6EFCE").text_color("006100").align_right(),
        ]))
        .position(300000, 1600000)
        .build();
    
    slides.push(
        SlideContent::new("Financial Report - Advanced Table")
            .table(advanced_table)
            .title_color("1F4E79")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 12: Comparison Matrix Table (NEW)
    // =========================================================================
    println!("📊 Slide 12: Comparison Matrix Table");
    
    let comparison_table = TableBuilder::new(vec![2000000, 1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Feature").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Basic").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Pro").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Enterprise").bold().background_color("4472C4").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Storage").text_color("000000"),
            TableCell::new("5 GB").text_color("000000"),
            TableCell::new("50 GB").text_color("000000"),
            TableCell::new("Unlimited").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Users").text_color("000000"),
            TableCell::new("1").text_color("000000"),
            TableCell::new("10").text_color("000000"),
            TableCell::new("Unlimited").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Support").text_color("000000"),
            TableCell::new("Email").text_color("000000"),
            TableCell::new("24/7 Chat").text_color("000000"),
            TableCell::new("Dedicated").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("API Access").text_color("000000"),
            TableCell::new("No").text_color("C62828"),
            TableCell::new("Yes").text_color("2E7D32"),
            TableCell::new("Yes + Priority").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Price/month").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$9").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$29").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$99").bold().background_color("F2F2F2").text_color("000000"),
        ]))
        .position(500000, 1600000)
        .build();
    
    slides.push(
        SlideContent::new("Pricing Comparison Matrix")
            .table(comparison_table)
            .title_color("4472C4")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 13: Process Flow with Shapes (NEW - SmartArt-like)
    // =========================================================================
    println!("🔷 Slide 13: Process Flow (SmartArt-style)");
    
    // Create process flow using shapes
    let step1 = Shape::new(ShapeType::RoundedRectangle, 300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("1. Research");
    let arrow1 = Shape::new(ShapeType::RightArrow, 1800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step2 = Shape::new(ShapeType::RoundedRectangle, 2300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("2. Design");
    let arrow2 = Shape::new(ShapeType::RightArrow, 3800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step3 = Shape::new(ShapeType::RoundedRectangle, 4300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("3. Develop");
    let arrow3 = Shape::new(ShapeType::RightArrow, 5800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step4 = Shape::new(ShapeType::RoundedRectangle, 6300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("5B9BD5"))
        .with_text("4. Deploy");
    
    slides.push(
        SlideContent::new("Development Process Flow")
            .add_shape(step1)
            .add_shape(arrow1)
            .add_shape(step2)
            .add_shape(arrow2)
            .add_shape(step3)
            .add_shape(arrow3)
            .add_shape(step4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 14: Organization Chart with Shapes (NEW)
    // =========================================================================
    println!("🔷 Slide 14: Organization Chart");
    
    // CEO at top
    let ceo = Shape::new(ShapeType::RoundedRectangle, 3500000, 1400000, 2000000, 600000)
        .with_fill(ShapeFill::new("1F4E79"))
        .with_text("CEO");
    
    // Vertical line from CEO
    let line1 = Shape::new(ShapeType::Rectangle, 4450000, 2000000, 100000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // Horizontal connector
    let hline = Shape::new(ShapeType::Rectangle, 1950000, 2400000, 5100000, 50000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // CTO, CFO, COO
    let cto = Shape::new(ShapeType::RoundedRectangle, 1000000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("CTO");
    let cfo = Shape::new(ShapeType::RoundedRectangle, 3600000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("CFO");
    let coo = Shape::new(ShapeType::RoundedRectangle, 6200000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("COO");
    
    // Vertical lines to departments
    let vline1 = Shape::new(ShapeType::Rectangle, 1850000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let vline2 = Shape::new(ShapeType::Rectangle, 4450000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let vline3 = Shape::new(ShapeType::Rectangle, 7050000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // Teams under CTO
    let eng = Shape::new(ShapeType::Rectangle, 500000, 3300000, 1200000, 400000)
        .with_fill(ShapeFill::new("BDD7EE"))
        .with_text("Engineering");
    let product = Shape::new(ShapeType::Rectangle, 1800000, 3300000, 1200000, 400000)
        .with_fill(ShapeFill::new("BDD7EE"))
        .with_text("Product");
    
    slides.push(
        SlideContent::new("Organization Structure")
            .add_shape(ceo)
            .add_shape(line1)
            .add_shape(hline)
            .add_shape(cto)
            .add_shape(cfo)
            .add_shape(coo)
            .add_shape(vline1)
            .add_shape(vline2)
            .add_shape(vline3)
            .add_shape(eng)
            .add_shape(product)
            .title_color("1F4E79")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 15: PDCA Cycle Diagram (NEW)
    // =========================================================================
    println!("🔷 Slide 15: PDCA Cycle Diagram");
    
    // Four quadrants for PDCA
    let plan = Shape::new(ShapeType::RoundedRectangle, 1500000, 1600000, 2500000, 1500000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("PLAN\n\nDefine goals\nand strategy");
    let do_box = Shape::new(ShapeType::RoundedRectangle, 4500000, 1600000, 2500000, 1500000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("DO\n\nImplement\nthe plan");
    let check = Shape::new(ShapeType::RoundedRectangle, 4500000, 3300000, 2500000, 1500000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("CHECK\n\nMeasure\nresults");
    let act = Shape::new(ShapeType::RoundedRectangle, 1500000, 3300000, 2500000, 1500000)
        .with_fill(ShapeFill::new("FFC000"))
        .with_text("ACT\n\nAdjust and\nimprove");
    
    // Arrows between quadrants
    let arr1 = Shape::new(ShapeType::RightArrow, 4100000, 2100000, 300000, 300000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr2 = Shape::new(ShapeType::DownArrow, 5600000, 3200000, 300000, 200000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr3 = Shape::new(ShapeType::LeftArrow, 4100000, 3800000, 300000, 300000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr4 = Shape::new(ShapeType::UpArrow, 2600000, 3200000, 300000, 200000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    slides.push(
        SlideContent::new("PDCA Continuous Improvement Cycle")
            .add_shape(plan)
            .add_shape(do_box)
            .add_shape(check)
            .add_shape(act)
            .add_shape(arr1)
            .add_shape(arr2)
            .add_shape(arr3)
            .add_shape(arr4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 16: Pyramid Diagram (Maslow's Hierarchy) (NEW)
    // =========================================================================
    println!("🔷 Slide 16: Pyramid Diagram");
    
    // Build pyramid from bottom to top
    let level5 = Shape::new(ShapeType::Trapezoid, 500000, 4000000, 8000000, 600000)
        .with_fill(ShapeFill::new("C00000"))
        .with_text("Physiological Needs - Food, Water, Shelter");
    let level4 = Shape::new(ShapeType::Trapezoid, 1000000, 3400000, 7000000, 600000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Safety Needs - Security, Stability");
    let level3 = Shape::new(ShapeType::Trapezoid, 1500000, 2800000, 6000000, 600000)
        .with_fill(ShapeFill::new("FFC000"))
        .with_text("Love & Belonging - Relationships");
    let level2 = Shape::new(ShapeType::Trapezoid, 2000000, 2200000, 5000000, 600000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Esteem - Achievement, Respect");
    let level1 = Shape::new(ShapeType::Triangle, 2500000, 1500000, 4000000, 700000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Self-Actualization");
    
    slides.push(
        SlideContent::new("Maslow's Hierarchy of Needs")
            .add_shape(level5)
            .add_shape(level4)
            .add_shape(level3)
            .add_shape(level2)
            .add_shape(level1)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 17: Venn Diagram (NEW)
    // =========================================================================
    println!("🔷 Slide 17: Venn Diagram");
    
    // Three overlapping circles
    let circle1 = Shape::new(ShapeType::Ellipse, 1500000, 1800000, 3000000, 3000000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Skills");
    let circle2 = Shape::new(ShapeType::Ellipse, 3500000, 1800000, 3000000, 3000000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Passion");
    let circle3 = Shape::new(ShapeType::Ellipse, 2500000, 3200000, 3000000, 3000000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Market Need");
    
    // Center label
    let center = Shape::new(ShapeType::Ellipse, 3200000, 2800000, 1600000, 800000)
        .with_fill(ShapeFill::new("FFFFFF"))
        .with_text("IKIGAI");
    
    slides.push(
        SlideContent::new("Finding Your Ikigai - Venn Diagram")
            .add_shape(circle1)
            .add_shape(circle2)
            .add_shape(circle3)
            .add_shape(center)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 18: Timeline/Roadmap (NEW)
    // =========================================================================
    println!("📊 Slide 18: Project Timeline");
    
    let timeline_table = TableBuilder::new(vec![1500000, 1500000, 1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q2 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q3 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q4 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q1 2025").bold().background_color("4472C4").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Research\n& Planning").background_color("BDD7EE").text_color("1F497D"),
            TableCell::new("Design\nPhase").background_color("BDD7EE").text_color("1F497D"),
            TableCell::new("Development\nSprint 1-3").background_color("C6EFCE").text_color("006100"),
            TableCell::new("Testing\n& QA").background_color("FCE4D6").text_color("C65911"),
            TableCell::new("Launch\n& Support").background_color("E2EFDA").text_color("375623"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("✓ Complete").bold().text_color("2E7D32"),
            TableCell::new("✓ Complete").bold().text_color("2E7D32"),
            TableCell::new("In Progress").text_color("ED7D31"),
            TableCell::new("Planned").text_color("7F7F7F"),
            TableCell::new("Planned").text_color("7F7F7F"),
        ]))
        .position(300000, 2000000)
        .build();
    
    slides.push(
        SlideContent::new("Project Roadmap 2024-2025")
            .table(timeline_table)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 19: Dashboard Summary (NEW)
    // =========================================================================
    println!("🔷 Slide 19: Dashboard with KPIs");
    
    // KPI boxes
    let kpi1 = Shape::new(ShapeType::RoundedRectangle, 300000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Revenue\n\n$2.14M\n+15% YoY");
    let kpi2 = Shape::new(ShapeType::RoundedRectangle, 2500000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Customers\n\n12,450\n+22% YoY");
    let kpi3 = Shape::new(ShapeType::RoundedRectangle, 4700000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("NPS Score\n\n72\n+8 pts");
    let kpi4 = Shape::new(ShapeType::RoundedRectangle, 6900000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("5B9BD5"))
        .with_text("Retention\n\n94%\n+3% YoY");
    
    // Status indicators
    let status1 = Shape::new(ShapeType::Ellipse, 1800000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    let status2 = Shape::new(ShapeType::Ellipse, 4000000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    let status3 = Shape::new(ShapeType::Ellipse, 6200000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("FFC000"));
    let status4 = Shape::new(ShapeType::Ellipse, 8400000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    
    slides.push(
        SlideContent::new("Executive Dashboard - Q1 2024")
            .add_shape(kpi1)
            .add_shape(kpi2)
            .add_shape(kpi3)
            .add_shape(kpi4)
            .add_shape(status1)
            .add_shape(status2)
            .add_shape(status3)
            .add_shape(status4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 20: Summary Slide (NEW)
    // =========================================================================
    println!("📝 Slide 20: Summary with Speaker Notes");
    
    slides.push(
        SlideContent::new("Summary & Next Steps")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Completed: Research, Design, Initial Development")
            .add_bullet("In Progress: Sprint 3 Development")
            .add_bullet("Next: QA Testing Phase (Q4 2024)")
            .add_bullet("Launch Target: Q1 2025")
            .add_bullet("Key Risks: Resource constraints, Timeline pressure")
            .content_size(24)
            .notes("Speaker Notes:\n\n1. Emphasize the progress made\n2. Highlight key achievements\n3. Address any concerns about timeline\n4. Open for Q&A")
    );

    // =========================================================================
    // SLIDE 21: Bullet Styles (NEW v0.2.1)
    // =========================================================================
    println!("🔢 Slide 21: Bullet Styles (NEW)");
    
    // Numbered list
    slides.push(
        SlideContent::new("Bullet Styles - Numbered List")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .with_bullet_style(BulletStyle::Number)
            .add_bullet("First numbered item")
            .add_bullet("Second numbered item")
            .add_bullet("Third numbered item")
            .add_bullet("Fourth numbered item")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 22: Lettered Lists (NEW v0.2.1)
    // =========================================================================
    println!("🔤 Slide 22: Lettered Lists (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Lettered Lists")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_lettered("Option A - First choice")
            .add_lettered("Option B - Second choice")
            .add_lettered("Option C - Third choice")
            .add_lettered("Option D - Fourth choice")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 23: Roman Numerals (NEW v0.2.1)
    // =========================================================================
    println!("🏛️ Slide 23: Roman Numerals (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Roman Numerals")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .with_bullet_style(BulletStyle::RomanUpper)
            .add_bullet("Chapter I - Introduction")
            .add_bullet("Chapter II - Background")
            .add_bullet("Chapter III - Methodology")
            .add_bullet("Chapter IV - Results")
            .add_bullet("Chapter V - Conclusion")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 24: Custom Bullets (NEW v0.2.1)
    // =========================================================================
    println!("⭐ Slide 24: Custom Bullets (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Custom Characters")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_styled_bullet("Star bullet point", BulletStyle::Custom('★'))
            .add_styled_bullet("Arrow bullet point", BulletStyle::Custom('→'))
            .add_styled_bullet("Check bullet point", BulletStyle::Custom('✓'))
            .add_styled_bullet("Diamond bullet point", BulletStyle::Custom('◆'))
            .add_styled_bullet("Heart bullet point", BulletStyle::Custom('♥'))
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 25: Sub-bullets / Hierarchy (NEW v0.2.1)
    // =========================================================================
    println!("📊 Slide 25: Sub-bullets Hierarchy (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Hierarchical Lists")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Main Topic 1")
            .add_sub_bullet("Supporting detail A")
            .add_sub_bullet("Supporting detail B")
            .add_bullet("Main Topic 2")
            .add_sub_bullet("Supporting detail C")
            .add_sub_bullet("Supporting detail D")
            .add_bullet("Main Topic 3")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 26: Text Enhancements (NEW v0.2.1)
    // =========================================================================
    println!("✏️ Slide 26: Text Enhancements (NEW)");
    
    // Use BulletPoint with formatting
    let strikethrough_bullet = BulletPoint::new("Strikethrough: This text is crossed out").strikethrough();
    let highlight_bullet = BulletPoint::new("Highlight: Yellow background for emphasis").highlight("FFFF00");
    let subscript_bullet = BulletPoint::new("Subscript: H₂O - for chemical formulas").subscript();
    let superscript_bullet = BulletPoint::new("Superscript: x² - for math expressions").superscript();
    let bold_colored = BulletPoint::new("Combined: Bold + Red color").bold().color("FF0000");
    
    let mut text_enhancements_slide = SlideContent::new("Text Enhancements - New Formatting")
        .layout(SlideLayout::TitleAndContent)
        .title_color("1F497D")
        .title_bold(true)
        .content_size(24);
    text_enhancements_slide.bullets.push(strikethrough_bullet);
    text_enhancements_slide.bullets.push(highlight_bullet);
    text_enhancements_slide.bullets.push(subscript_bullet);
    text_enhancements_slide.bullets.push(superscript_bullet);
    text_enhancements_slide.bullets.push(bold_colored);
    
    slides.push(text_enhancements_slide);

    // =========================================================================
    // SLIDE 27: Font Size Presets (NEW v0.2.1)
    // =========================================================================
    println!("🔤 Slide 27: Font Size Presets (NEW)");
    
    // Demonstrate different font sizes per bullet
    let large_bullet = BulletPoint::new(&format!("LARGE: {}pt - Extra large text", font_sizes::LARGE)).font_size(font_sizes::LARGE);
    let heading_bullet = BulletPoint::new(&format!("HEADING: {}pt - Section headers", font_sizes::HEADING)).font_size(font_sizes::HEADING);
    let body_bullet = BulletPoint::new(&format!("BODY: {}pt - Regular content", font_sizes::BODY)).font_size(font_sizes::BODY);
    let small_bullet = BulletPoint::new(&format!("SMALL: {}pt - Smaller text", font_sizes::SMALL)).font_size(font_sizes::SMALL);
    let caption_bullet = BulletPoint::new(&format!("CAPTION: {}pt - Captions and notes", font_sizes::CAPTION)).font_size(font_sizes::CAPTION);
    
    let mut font_size_slide = SlideContent::new("Font Size Presets - Each line different size")
        .layout(SlideLayout::TitleAndContent)
        .title_color("1F497D")
        .title_bold(true)
        .title_size(font_sizes::TITLE);
    font_size_slide.bullets.push(large_bullet);
    font_size_slide.bullets.push(heading_bullet);
    font_size_slide.bullets.push(body_bullet);
    font_size_slide.bullets.push(small_bullet);
    font_size_slide.bullets.push(caption_bullet);
    
    slides.push(font_size_slide);

    // =========================================================================
    // SLIDE 28: Theme Colors (NEW v0.2.1)
    // =========================================================================
    println!("🎨 Slide 28: Theme Colors (NEW)");
    
    // Create shapes with theme colors
    let corporate_shape = Shape::new(ShapeType::Rectangle, 500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::CORPORATE.primary))
        .with_text("Corporate");
    
    let modern_shape = Shape::new(ShapeType::Rectangle, 2500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::MODERN.primary))
        .with_text("Modern");
    
    let vibrant_shape = Shape::new(ShapeType::Rectangle, 4500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::VIBRANT.primary))
        .with_text("Vibrant");
    
    let dark_shape = Shape::new(ShapeType::Rectangle, 6500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::DARK.primary))
        .with_text("Dark");
    
    let nature_shape = Shape::new(ShapeType::Rectangle, 500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::NATURE.primary))
        .with_text("Nature");
    
    let tech_shape = Shape::new(ShapeType::Rectangle, 2500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::TECH.primary))
        .with_text("Tech");
    
    let carbon_shape = Shape::new(ShapeType::Rectangle, 4500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::CARBON.primary))
        .with_text("Carbon");
    
    slides.push(
        SlideContent::new("Theme Color Palettes")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_shape(corporate_shape)
            .add_shape(modern_shape)
            .add_shape(vibrant_shape)
            .add_shape(dark_shape)
            .add_shape(nature_shape)
            .add_shape(tech_shape)
            .add_shape(carbon_shape)
    );

    // =========================================================================
    // SLIDE 29: Material & Carbon Design Colors (NEW v0.2.1)
    // =========================================================================
    println!("🌈 Slide 29: Material & Carbon Colors (NEW)");
    
    // Material Design colors
    let material_red = Shape::new(ShapeType::Rectangle, 500000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_RED))
        .with_text("M-Red");
    
    let material_blue = Shape::new(ShapeType::Rectangle, 1900000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_BLUE))
        .with_text("M-Blue");
    
    let material_green = Shape::new(ShapeType::Rectangle, 3300000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_GREEN))
        .with_text("M-Green");
    
    let material_orange = Shape::new(ShapeType::Rectangle, 4700000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_ORANGE))
        .with_text("M-Orange");
    
    let material_purple = Shape::new(ShapeType::Rectangle, 6100000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_PURPLE))
        .with_text("M-Purple");
    
    // Carbon Design colors
    let carbon_blue = Shape::new(ShapeType::Rectangle, 500000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_BLUE_60))
        .with_text("C-Blue");
    
    let carbon_green = Shape::new(ShapeType::Rectangle, 1900000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_GREEN_50))
        .with_text("C-Green");
    
    let carbon_red = Shape::new(ShapeType::Rectangle, 3300000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_RED_60))
        .with_text("C-Red");
    
    let carbon_purple = Shape::new(ShapeType::Rectangle, 4700000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_PURPLE_60))
        .with_text("C-Purple");
    
    let carbon_gray = Shape::new(ShapeType::Rectangle, 6100000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_GRAY_100))
        .with_text("C-Gray");
    
    slides.push(
        SlideContent::new("Material & Carbon Design Colors")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_shape(material_red)
            .add_shape(material_blue)
            .add_shape(material_green)
            .add_shape(material_orange)
            .add_shape(material_purple)
            .add_shape(carbon_blue)
            .add_shape(carbon_green)
            .add_shape(carbon_red)
            .add_shape(carbon_purple)
            .add_shape(carbon_gray)
    );

    // =========================================================================
    // SLIDE 30: Image from Base64 (NEW v0.2.1)
    // =========================================================================
    println!("🖼️ Slide 30: Image from Base64 (NEW)");
    
    // 1x1 red PNG pixel in base64
    let _red_pixel_base64 = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8DwHwAFBQIAX8jx0gAAAABJRU5ErkJggg==";
    
    // Create image from base64 (demonstrating the API)
    let _base64_image = ImageBuilder::from_base64(_red_pixel_base64, 914400, 914400, "PNG")
        .position(4000000, 2500000)
        .build();
    
    slides.push(
        SlideContent::new("Image Loading - New Methods")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Image::new(path) - Load from file path")
            .add_bullet("Image::from_base64(data) - Load from base64 string")
            .add_bullet("Image::from_bytes(data) - Load from raw bytes")
            .add_bullet("ImageBuilder for fluent API configuration")
            .add_bullet("Built-in base64 decoder (no external deps)")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 31: Feature Summary (NEW v0.2.1)
    // =========================================================================
    println!("📋 Slide 31: v0.2.1 Feature Summary (NEW)");
    
    slides.push(
        SlideContent::new("New Features in v0.2.1")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_numbered("BulletStyle: Number, Letter, Roman, Custom")
            .add_numbered("TextFormat: Strikethrough, Highlight")
            .add_numbered("TextFormat: Subscript, Superscript")
            .add_numbered("Font size presets in prelude")
            .add_numbered("Image::from_base64 and from_bytes")
            .add_numbered("Theme color palettes (7 themes)")
            .add_numbered("Material & Carbon Design colors")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 32: Slide Show Settings - Comparison Table (REAL: embedded in presProps.xml)
    // =========================================================================
    println!("🎬 Slide 34: Slide Show Settings (Visual)");

    let show_speaker = SlideShowSettings::new().pen_color(PenColor::red());
    let show_kiosk = SlideShowSettings::kiosk();
    let _show_range = SlideShowSettings::new()
        .show_type(ShowType::Browsed)
        .slide_range(SlideRange::Range { start: 1, end: 10 })
        .without_animation(true);
    let _speaker_xml = show_speaker.to_xml();
    let _kiosk_xml = show_kiosk.to_xml();

    let show_table = TableBuilder::new(vec![2000000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Setting").bold().background_color("1F4E79").text_color("FFFFFF"),
            TableCell::new("Speaker").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Kiosk").bold().background_color("ED7D31").text_color("FFFFFF"),
            TableCell::new("Browsed").bold().background_color("70AD47").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Loop").bold().background_color("D6E4F0"),
            TableCell::new("No"), TableCell::new("Yes").bold().text_color("2E7D32"),
            TableCell::new("No"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Narration").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("No").text_color("C62828"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Animation").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("Yes"),
            TableCell::new("No").text_color("C62828"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Timings").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("Auto"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Slide Range").bold().background_color("D6E4F0"),
            TableCell::new("All"), TableCell::new("All"),
            TableCell::new("1-10"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Pen Color").bold().background_color("D6E4F0"),
            TableCell::new("Red").text_color("FF0000"),
            TableCell::new("Red").text_color("FF0000"),
            TableCell::new("Red").text_color("FF0000"),
        ]))
        .position(300000, 1600000)
        .build();

    // Mode icons
    let icon_speaker = Shape::new(ShapeType::RoundedRectangle, 300000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Speaker: Full control");
    let icon_kiosk = Shape::new(ShapeType::RoundedRectangle, 3100000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Kiosk: Auto-loop");
    let icon_browsed = Shape::new(ShapeType::RoundedRectangle, 5900000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Browsed: Scrollbar");

    slides.push(
        SlideContent::new("Slide Show Settings - Mode Comparison")
            .table(show_table)
            .add_shape(icon_speaker)
            .add_shape(icon_kiosk)
            .add_shape(icon_browsed)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 35: Print Settings - Visual Handout Grid
    // =========================================================================
    println!("🖨️  Slide 35: Print Settings & Handouts (Visual)");

    let print = PrintSettings::new()
        .print_what(PrintWhat::Handouts)
        .color_mode(PrintColorMode::Grayscale)
        .handout_layout(GenHandoutLayout::SlidesPerPage6)
        .frame_slides(true)
        .header("Q1 2025 Strategy Review")
        .footer("Confidential - Internal Use Only")
        .print_date(true)
        .print_page_numbers(true);
    let _prnpr_xml = print.to_prnpr_xml();
    let _handout_xml = print.to_handout_master_xml();

    // Visual: 6-slide handout grid (2 cols x 3 rows)
    let hdr = Shape::new(ShapeType::Rectangle, 300000, 1500000, 4200000, 300000)
        .with_fill(ShapeFill::new("E7E6E6"))
        .with_text("Q1 2025 Strategy Review");
    // Row 1
    let s1 = Shape::new(ShapeType::Rectangle, 400000, 2000000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 1");
    let s2 = Shape::new(ShapeType::Rectangle, 2500000, 2000000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 2");
    // Row 2
    let s3 = Shape::new(ShapeType::Rectangle, 400000, 3200000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 3");
    let s4 = Shape::new(ShapeType::Rectangle, 2500000, 3200000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 4");
    // Row 3
    let s5 = Shape::new(ShapeType::Rectangle, 400000, 4400000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 5");
    let s6 = Shape::new(ShapeType::Rectangle, 2500000, 4400000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 6");
    let ftr = Shape::new(ShapeType::Rectangle, 300000, 5600000, 4200000, 300000)
        .with_fill(ShapeFill::new("E7E6E6"))
        .with_text("Confidential - Internal Use Only");

    // Settings summary table on the right
    let print_table = TableBuilder::new(vec![1800000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Print Settings").bold().background_color("1F4E79").text_color("FFFFFF"),
            TableCell::new("").background_color("1F4E79"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Print What").bold().background_color("D6E4F0"),
            TableCell::new("Handouts"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Color Mode").bold().background_color("D6E4F0"),
            TableCell::new("Grayscale"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Layout").bold().background_color("D6E4F0"),
            TableCell::new("6 slides/page"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Frame Slides").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Date").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Page Numbers").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .position(5000000, 1800000)
        .build();

    slides.push(
        SlideContent::new("Print Handout - 6 Slides Per Page")
            .table(print_table)
            .add_shape(hdr)
            .add_shape(s1).add_shape(s2)
            .add_shape(s3).add_shape(s4)
            .add_shape(s5).add_shape(s6)
            .add_shape(ftr)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 36: Advanced Table Merging - Actual Merged Table
    // =========================================================================
    println!("📊 Slide 36: Advanced Table Merging (Visual)");

    // Use TableMergeMap to compute states, then build a visual table
    let mut merge_map = TableMergeMap::new(5, 4);
    merge_map.merge_cells(0, 0, 1, 4).unwrap(); // Title row spans all 4 cols
    merge_map.merge_cells(1, 0, 2, 1).unwrap(); // "Products" spans 2 rows
    merge_map.merge_cells(3, 0, 2, 1).unwrap(); // "Services" spans 2 rows

    // Show merge state labels
    let state_00 = merge_map.cell_state(0, 0); // Anchor gridSpan=4
    let state_01 = merge_map.cell_state(0, 1); // HMerge
    let state_10 = merge_map.cell_state(1, 0); // Anchor rowSpan=2
    let state_20 = merge_map.cell_state(2, 0); // VMerge
    println!("   ├── (0,0): {}", state_00.to_xml_attrs().trim());
    println!("   ├── (0,1): {}", state_01.to_xml_attrs().trim());
    println!("   ├── (1,0): {}", state_10.to_xml_attrs().trim());
    println!("   └── (2,0): {}", state_20.to_xml_attrs().trim());

    // Build the table with REAL merge attributes (gridSpan, rowSpan, hMerge, vMerge)
    let merge_table = TableBuilder::new(vec![1500000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2025 Revenue Report").bold().background_color("1F4E79").text_color("FFFFFF").grid_span(4),
            TableCell::new("").background_color("1F4E79").h_merge(),
            TableCell::new("").background_color("1F4E79").h_merge(),
            TableCell::new("").background_color("1F4E79").h_merge(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Products").bold().background_color("BDD7EE").text_color("1F497D").row_span(2),
            TableCell::new("Hardware").background_color("E2EFDA"),
            TableCell::new("$450,000").text_color("2E7D32").align_right(),
            TableCell::new("+12%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("").background_color("BDD7EE").v_merge(),
            TableCell::new("Software").background_color("E2EFDA"),
            TableCell::new("$680,000").text_color("2E7D32").align_right(),
            TableCell::new("+25%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Services").bold().background_color("FCE4D6").text_color("C65911").row_span(2),
            TableCell::new("Consulting").background_color("FFF2CC"),
            TableCell::new("$320,000").text_color("2E7D32").align_right(),
            TableCell::new("+8%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("").background_color("FCE4D6").v_merge(),
            TableCell::new("Support").background_color("FFF2CC"),
            TableCell::new("$190,000").text_color("2E7D32").align_right(),
            TableCell::new("+5%").bold().text_color("2E7D32").align_right(),
        ]))
        .position(300000, 1600000)
        .build();

    // Legend shapes
    let legend_anchor = Shape::new(ShapeType::RoundedRectangle, 300000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Anchor (gridSpan/rowSpan)");
    let legend_hmerge = Shape::new(ShapeType::RoundedRectangle, 2500000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("hMerge (col covered)");
    let legend_vmerge = Shape::new(ShapeType::RoundedRectangle, 4700000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("vMerge (row covered)");
    let legend_normal = Shape::new(ShapeType::RoundedRectangle, 6900000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"))
        .with_text("Normal (no merge)");

    slides.push(
        SlideContent::new("Advanced Table Merging - Merged Cells")
            .table(merge_table)
            .add_shape(legend_anchor)
            .add_shape(legend_hmerge)
            .add_shape(legend_vmerge)
            .add_shape(legend_normal)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // Build PresentationSettings with all advanced features
    // =========================================================================
    println!("\n⚙️  Building Presentation Settings...");

    // Slide show settings (embedded in presProps.xml as <p:showPr>)
    let show_settings = SlideShowSettings::new()
        .show_type(ShowType::Speaker)
        .pen_color(PenColor::red())
        .use_timings(true);
    println!("   ├── Slide Show: Speaker mode, red pen, timings enabled");
    println!("   │   └── XML: {} bytes", show_settings.to_xml().len());

    // Print settings (embedded in presProps.xml as <p:prnPr>)
    let print_settings = PrintSettings::new()
        .print_what(PrintWhat::Handouts)
        .color_mode(PrintColorMode::Grayscale)
        .handout_layout(GenHandoutLayout::SlidesPerPage6)
        .frame_slides(true)
        .header("Q1 2025 Strategy Review")
        .footer("Confidential - Internal Use Only")
        .print_date(true)
        .print_page_numbers(true);
    println!("   └── Print: Handouts, 6/page, grayscale, framed");
    println!("       └── XML: {} bytes", print_settings.to_prnpr_xml().len());

    let pres_settings = PresentationSettings::new()
        .slide_show(show_settings)
        .print(print_settings);
    println!("   All settings configured → presProps.xml");

    // =========================================================================
    // Generate PPTX with real integrated features
    // =========================================================================
    println!("\n📦 Generating PPTX with integrated features...");
    let pptx_data = create_pptx_with_settings(
        "PPTX-RS Element Showcase",
        slides.clone(),
        Some(pres_settings),
    )?;
    fs::write("comprehensive_demo.pptx", &pptx_data)?;
    println!("   ✓ Created comprehensive_demo.pptx ({} slides, {} bytes)", 
             slides.len(), pptx_data.len());

    // =========================================================================
    // Package Analysis - Demonstrate Reading
    // =========================================================================
    println!("\n📖 Package Analysis (Read Capability):");
    
    let package = Package::open("comprehensive_demo.pptx")?;
    let paths = package.part_paths();
    
    let slide_count = paths.iter()
        .filter(|p| p.starts_with("ppt/slides/slide") && p.ends_with(".xml"))
        .count();
    
    println!("   ├── Total parts: {}", package.part_count());
    println!("   ├── Slides: {}", slide_count);
    println!("   └── Package opened and analyzed successfully");

    // =========================================================================
    // NEW: Parts API Demonstration
    // =========================================================================
    println!("\n🧩 Parts API Demonstration:");
    
    // SlideLayoutPart - 11 layout types
    println!("   ┌── SlideLayoutPart (11 layout types):");
    let layouts = [
        LayoutType::Title,
        LayoutType::TitleAndContent,
        LayoutType::SectionHeader,
        LayoutType::TwoContent,
        LayoutType::Comparison,
        LayoutType::TitleOnly,
        LayoutType::Blank,
        LayoutType::ContentWithCaption,
        LayoutType::PictureWithCaption,
        LayoutType::TitleAndVerticalText,
        LayoutType::VerticalTitleAndText,
    ];
    for (i, layout_type) in layouts.iter().enumerate() {
        let layout = SlideLayoutPart::new(i + 1, *layout_type);
        if i < 3 {
            println!("   │   ├── {}: {} ({})", i + 1, layout_type.name(), layout.path());
        }
    }
    println!("   │   └── ... and {} more layout types", layouts.len() - 3);
    
    // SlideMasterPart
    println!("   ├── SlideMasterPart:");
    let mut master = SlideMasterPart::new(1);
    master.set_name("Custom Master");
    master.add_layout_rel_id("rId2");
    master.add_layout_rel_id("rId3");
    println!("   │   ├── Name: {}", master.name());
    println!("   │   ├── Path: {}", master.path());
    println!("   │   └── Layouts: {} linked", master.layout_rel_ids().len());
    
    // ThemePart - Colors and Fonts
    println!("   ├── ThemePart (colors & fonts):");
    let mut theme = ThemePart::new(1);
    theme.set_name("Corporate Theme");
    theme.set_major_font("Arial");
    theme.set_minor_font("Calibri");
    theme.set_color("accent1", "FF5733");
    theme.set_color("accent2", "33FF57");
    let theme_xml = theme.to_xml()?;
    println!("   │   ├── Name: {}", theme.name());
    println!("   │   ├── Major Font: Arial");
    println!("   │   ├── Minor Font: Calibri");
    println!("   │   └── XML size: {} bytes", theme_xml.len());
    
    // NotesSlidePart - Speaker notes
    println!("   ├── NotesSlidePart (speaker notes):");
    let notes = NotesSlidePart::with_text(1, "Remember to:\n- Introduce yourself\n- Explain the agenda\n- Ask for questions");
    let notes_xml = notes.to_xml()?;
    println!("   │   ├── Path: {}", notes.path());
    println!("   │   ├── Text: \"{}...\"", &notes.notes_text()[..20.min(notes.notes_text().len())]);
    println!("   │   └── XML size: {} bytes", notes_xml.len());
    
    // AppPropertiesPart - Application metadata
    println!("   ├── AppPropertiesPart (metadata):");
    let mut app_props = AppPropertiesPart::new();
    app_props.set_company("Acme Corporation");
    app_props.set_slides(slides.len() as u32);
    let app_xml = app_props.to_xml()?;
    println!("   │   ├── Company: Acme Corporation");
    println!("   │   ├── Slides: {}", slides.len());
    println!("   │   └── XML size: {} bytes", app_xml.len());
    
    // MediaPart - Video/Audio formats
    println!("   ├── MediaPart (10 media formats):");
    println!("   │   ├── Video: mp4, webm, avi, wmv, mov");
    println!("   │   ├── Audio: mp3, wav, wma, m4a, ogg");
    let sample_media = MediaPart::new(1, MediaFormat::Mp4, vec![0; 100]);
    println!("   │   └── Sample: {} ({})", sample_media.path(), sample_media.format().mime_type());
    
    // TablePart - Table with formatting
    println!("   ├── TablePart (cell formatting):");
    let table_part = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Header 1").bold().background("4472C4"),
            TableCellPart::new("Header 2").bold().background("4472C4"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Data 1").color("333333"),
            TableCellPart::new("Data 2").italic(),
        ]))
        .position(EMU_PER_INCH, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 6, EMU_PER_INCH * 2);
    let table_xml = table_part.to_slide_xml(10);
    println!("   │   ├── Rows: {}", table_part.rows.len());
    println!("   │   ├── Features: bold, italic, colors, backgrounds");
    println!("   │   └── XML size: {} bytes", table_xml.len());
    
    // ContentTypesPart
    println!("   └── ContentTypesPart:");
    let mut content_types = ContentTypesPart::new();
    content_types.add_presentation();
    content_types.add_slide(1);
    content_types.add_slide_layout(1);
    content_types.add_slide_master(1);
    content_types.add_theme(1);
    content_types.add_core_properties();
    content_types.add_app_properties();
    let ct_xml = content_types.to_xml()?;
    println!("       ├── Path: {}", content_types.path());
    println!("       └── XML size: {} bytes", ct_xml.len());

    // =========================================================================
    // NEW: Elements API Demonstration
    // =========================================================================
    println!("\n🎨 Elements API Demonstration:");
    
    // Color types
    println!("   ┌── Color Types:");
    let rgb = RgbColor::new(255, 87, 51);
    let rgb_hex = RgbColor::from_hex("#4472C4").unwrap();
    let scheme = SchemeColor::Accent1;
    let color = Color::rgb(100, 149, 237);
    println!("   │   ├── RgbColor::new(255, 87, 51) → {}", rgb.to_hex());
    println!("   │   ├── RgbColor::from_hex(\"#4472C4\") → {}", rgb_hex.to_hex());
    println!("   │   ├── SchemeColor::Accent1 → {}", scheme.as_str());
    println!("   │   └── Color::rgb(100, 149, 237) → XML: {}", color.to_xml().chars().take(30).collect::<String>());
    
    // Position and Size
    println!("   ├── Position & Size (EMU units):");
    let pos = Position::from_inches(1.0, 2.0);
    let size = Size::from_inches(4.0, 3.0);
    println!("   │   ├── Position::from_inches(1.0, 2.0) → x={}, y={}", pos.x, pos.y);
    println!("   │   ├── Size::from_inches(4.0, 3.0) → w={}, h={}", size.width, size.height);
    println!("   │   └── EMU_PER_INCH = {}", EMU_PER_INCH);
    
    // Transform
    println!("   └── Transform (position + size + rotation):");
    let transform = Transform::from_inches(1.0, 1.5, 3.0, 2.0).with_rotation(45.0);
    let transform_xml = transform.to_xml();
    println!("       ├── Transform::from_inches(1.0, 1.5, 3.0, 2.0)");
    println!("       ├── .with_rotation(45.0)");
    println!("       └── XML: {}...", &transform_xml[..50.min(transform_xml.len())]);

    // =========================================================================
    // NEW: Advanced Features Demonstration
    // =========================================================================
    println!("\n🚀 Advanced Features Demonstration:");

    // -------------------------------------------------------------------------
    // Complex Table Examples
    // -------------------------------------------------------------------------
    println!("   ┌── Complex Table Examples:");
    
    // Example 1: Financial Report Table
    println!("   │   ┌── Financial Report Table (5x4 with formatting):");
    let financial_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Q1 2024 Financial Summary")
                .col_span(4)
                .bold()
                .center()
                .background("1F4E79")
                .color("FFFFFF")
                .font_size(14)
                .font("Arial Black"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Category").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Revenue").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Expenses").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Profit").bold().center().background("2E75B6").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Product Sales").align(HorizontalAlign::Left),
            TableCellPart::new("$1,250,000").align(HorizontalAlign::Right).color("2E7D32"),
            TableCellPart::new("$450,000").align(HorizontalAlign::Right).color("C62828"),
            TableCellPart::new("$800,000").align(HorizontalAlign::Right).bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Services").align(HorizontalAlign::Left),
            TableCellPart::new("$890,000").align(HorizontalAlign::Right).color("2E7D32"),
            TableCellPart::new("$320,000").align(HorizontalAlign::Right).color("C62828"),
            TableCellPart::new("$570,000").align(HorizontalAlign::Right).bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Total").bold().background("E7E6E6"),
            TableCellPart::new("$2,140,000").bold().align(HorizontalAlign::Right).background("E7E6E6"),
            TableCellPart::new("$770,000").bold().align(HorizontalAlign::Right).background("E7E6E6"),
            TableCellPart::new("$1,370,000").bold().align(HorizontalAlign::Right).background("C6EFCE").color("006100"),
        ]))
        .position(EMU_PER_INCH / 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 8, EMU_PER_INCH * 3);
    let fin_xml = financial_table.to_slide_xml(100);
    println!("   │   │   ├── Merged header spanning 4 columns");
    println!("   │   │   ├── Color-coded values (green=positive, red=negative)");
    println!("   │   │   ├── Custom fonts and sizes");
    println!("   │   │   └── XML: {} bytes", fin_xml.len());

    // Example 2: Comparison Matrix
    println!("   │   ├── Comparison Matrix (features vs products):");
    let matrix_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Feature").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Basic").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Pro").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Enterprise").bold().center().background("4472C4").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Storage").align(HorizontalAlign::Left),
            TableCellPart::new("5 GB").center(),
            TableCellPart::new("50 GB").center(),
            TableCellPart::new("Unlimited").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Users").align(HorizontalAlign::Left),
            TableCellPart::new("1").center(),
            TableCellPart::new("10").center(),
            TableCellPart::new("Unlimited").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Support").align(HorizontalAlign::Left),
            TableCellPart::new("Email").center(),
            TableCellPart::new("24/7 Chat").center(),
            TableCellPart::new("Dedicated").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Price/mo").bold().background("F2F2F2"),
            TableCellPart::new("$9").center().bold().background("F2F2F2"),
            TableCellPart::new("$29").center().bold().background("F2F2F2"),
            TableCellPart::new("$99").center().bold().background("F2F2F2"),
        ]));
    println!("   │   │   └── 5x4 matrix with alternating styles");

    // Example 3: Schedule/Timeline Table
    println!("   │   └── Schedule Table (with row spans):");
    let schedule_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Time").bold().center().background("70AD47").color("FFFFFF"),
            TableCellPart::new("Monday").bold().center().background("70AD47").color("FFFFFF"),
            TableCellPart::new("Tuesday").bold().center().background("70AD47").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("9:00 AM").center().background("E2EFDA"),
            TableCellPart::new("Team Standup").center().row_span(2).valign(VerticalAlign::Middle).background("BDD7EE"),
            TableCellPart::new("Code Review").center(),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("10:00 AM").center().background("E2EFDA"),
            TableCellPart::merged(),
            TableCellPart::new("Sprint Planning").center().background("FCE4D6"),
        ]));
    println!("   │       └── Row spans for multi-hour events");

    // -------------------------------------------------------------------------
    // Complex Animation Sequences
    // -------------------------------------------------------------------------
    println!("   ├── Complex Animation Sequences:");
    
    // Sequence 1: Title entrance with staggered content
    println!("   │   ┌── Staggered Entrance Sequence:");
    let title_anim = Animation::new(2, AnimationEffect::Fade)
        .trigger(AnimationTrigger::OnClick)
        .duration(500);
    let content1 = Animation::new(3, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(200);
    let content2 = Animation::new(4, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(100);
    let content3 = Animation::new(5, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(100);
    let staggered = SlideAnimations::new()
        .add(title_anim)
        .add(content1)
        .add(content2)
        .add(content3)
        .transition(SlideTransition::new(TransitionEffect::Push).direction(AnimationDirection::Left).duration(750));
    let staggered_xml = staggered.to_timing_xml()?;
    println!("   │   │   ├── Title: Fade on click");
    println!("   │   │   ├── Content 1-3: FlyIn with 100ms stagger");
    println!("   │   │   ├── Transition: Push from left (750ms)");
    println!("   │   │   └── XML: {} bytes", staggered_xml.len());

    // Sequence 2: Emphasis and exit
    println!("   │   ├── Emphasis + Exit Sequence:");
    let emphasis = Animation::new(6, AnimationEffect::Pulse)
        .trigger(AnimationTrigger::OnClick)
        .duration(1000)
        .repeat(3);
    let exit = Animation::new(6, AnimationEffect::FadeOut)
        .trigger(AnimationTrigger::AfterPrevious)
        .duration(500);
    let emphasis_seq = SlideAnimations::new()
        .add(emphasis)
        .add(exit);
    println!("   │   │   ├── Pulse 3x on click, then fade out");
    println!("   │   │   └── Same shape, sequential effects");

    // Sequence 3: Motion path
    println!("   │   └── Motion Path Animation:");
    let motion = Animation::new(7, AnimationEffect::Lines)
        .trigger(AnimationTrigger::OnClick)
        .duration(2000);
    println!("   │       └── Custom path: Lines, Arcs, Turns, Loops");

    // -------------------------------------------------------------------------
    // SmartArt Combinations
    // -------------------------------------------------------------------------
    println!("   ├── SmartArt Layout Examples:");
    
    // Process flow
    println!("   │   ┌── Process Flow (5 steps):");
    let process = SmartArtPart::new(1, SmartArtLayout::BasicProcess)
        .add_items(vec!["Research", "Design", "Develop", "Test", "Deploy"])
        .position(EMU_PER_INCH / 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 8, EMU_PER_INCH * 2);
    println!("   │   │   └── {} nodes in horizontal flow", process.nodes().len());

    // Organization chart
    println!("   │   ├── Organization Chart:");
    let org = SmartArtPart::new(2, SmartArtLayout::OrgChart)
        .add_items(vec!["CEO", "CTO", "CFO", "VP Engineering", "VP Sales"]);
    println!("   │   │   └── Hierarchical structure with {} positions", org.nodes().len());

    // Cycle diagram
    println!("   │   ├── Cycle Diagram:");
    let cycle = SmartArtPart::new(3, SmartArtLayout::BasicCycle)
        .add_items(vec!["Plan", "Do", "Check", "Act"]);
    println!("   │   │   └── PDCA cycle with {} phases", cycle.nodes().len());

    // Venn diagram
    println!("   │   ├── Venn Diagram:");
    let venn = SmartArtPart::new(4, SmartArtLayout::BasicVenn)
        .add_items(vec!["Skills", "Passion", "Market Need"]);
    println!("   │   │   └── 3-circle Venn for Ikigai concept");

    // Pyramid
    println!("   │   └── Pyramid:");
    let pyramid = SmartArtPart::new(5, SmartArtLayout::BasicPyramid)
        .add_items(vec!["Self-Actualization", "Esteem", "Love/Belonging", "Safety", "Physiological"]);
    println!("   │       └── Maslow's hierarchy with {} levels", pyramid.nodes().len());

    // -------------------------------------------------------------------------
    // 3D Model Configurations
    // -------------------------------------------------------------------------
    println!("   ├── 3D Model Configurations:");
    
    // Product showcase
    println!("   │   ┌── Product Showcase:");
    let product_3d = Model3DPart::new(1, Model3DFormat::Glb, vec![0; 100])
        .camera(CameraPreset::IsometricTopUp)
        .rotation(0.0, 45.0, 0.0)
        .zoom(1.2)
        .position(EMU_PER_INCH * 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 4, EMU_PER_INCH * 4);
    println!("   │   │   ├── Camera: Isometric top-up view");
    println!("   │   │   ├── Rotation: 45° Y-axis for best angle");
    println!("   │   │   └── Zoom: 1.2x for detail");

    // Architectural model
    println!("   │   ├── Architectural Model:");
    let arch_3d = Model3DPart::new(2, Model3DFormat::Gltf, vec![0; 100])
        .camera(CameraPreset::Front)
        .rotation(15.0, -30.0, 0.0)
        .ambient_light("FFFFCC");
    println!("   │   │   ├── Camera: Front view with tilt");
    println!("   │   │   └── Ambient: Warm lighting (FFFFCC)");

    // Technical diagram
    println!("   │   └── Technical Diagram:");
    let tech_3d = Model3DPart::new(3, Model3DFormat::Obj, vec![0; 100])
        .camera(CameraPreset::IsometricOffAxis1Top)
        .rotation(0.0, 0.0, 0.0);
    println!("   │       └── Camera: Off-axis isometric for exploded view");

    // -------------------------------------------------------------------------
    // Theme + Master + Layout Combination
    // -------------------------------------------------------------------------
    println!("   ├── Theme + Master + Layout Integration:");
    
    // Corporate theme
    let mut corp_theme = ThemePart::new(1);
    corp_theme.set_name("Corporate Blue");
    corp_theme.set_major_font("Segoe UI");
    corp_theme.set_minor_font("Segoe UI Light");
    corp_theme.set_color("dk1", "000000");
    corp_theme.set_color("lt1", "FFFFFF");
    corp_theme.set_color("dk2", "1F497D");
    corp_theme.set_color("lt2", "EEECE1");
    corp_theme.set_color("accent1", "4472C4");
    corp_theme.set_color("accent2", "ED7D31");
    corp_theme.set_color("accent3", "A5A5A5");
    corp_theme.set_color("accent4", "FFC000");
    corp_theme.set_color("accent5", "5B9BD5");
    corp_theme.set_color("accent6", "70AD47");
    let theme_xml = corp_theme.to_xml()?;
    println!("   │   ├── Theme: Corporate Blue");
    println!("   │   │   ├── Fonts: Segoe UI / Segoe UI Light");
    println!("   │   │   ├── 12 color slots defined");
    println!("   │   │   └── XML: {} bytes", theme_xml.len());

    // Master with multiple layouts
    let mut corp_master = SlideMasterPart::new(1);
    corp_master.set_name("Corporate Master");
    corp_master.add_layout_rel_id("rId2"); // Title
    corp_master.add_layout_rel_id("rId3"); // Title + Content
    corp_master.add_layout_rel_id("rId4"); // Section Header
    corp_master.add_layout_rel_id("rId5"); // Two Content
    corp_master.add_layout_rel_id("rId6"); // Comparison
    corp_master.add_layout_rel_id("rId7"); // Title Only
    corp_master.add_layout_rel_id("rId8"); // Blank
    println!("   │   └── Master: {} with {} layouts linked", corp_master.name(), corp_master.layout_rel_ids().len());

    // -------------------------------------------------------------------------
    // VBA + Custom XML Integration
    // -------------------------------------------------------------------------
    println!("   ├── VBA + Custom XML Integration:");
    
    // VBA with multiple modules
    let vba_project = VbaProjectPart::new()
        .add_module(VbaModule::new("AutoRun", r#"
Sub Auto_Open()
    MsgBox "Welcome to the presentation!"
End Sub

Sub NavigateToSlide(slideNum As Integer)
    SlideShowWindows(1).View.GotoSlide slideNum
End Sub
"#))
        .add_module(VbaModule::new("DataHelpers", r#"
Function GetCustomData(key As String) As String
    ' Read from Custom XML part
    GetCustomData = ActivePresentation.CustomXMLParts(1).SelectSingleNode("//" & key).Text
End Function
"#))
        .add_module(VbaModule::class("SlideController", r#"
Private currentSlide As Integer

Public Sub NextSlide()
    currentSlide = currentSlide + 1
    NavigateToSlide currentSlide
End Sub
"#));
    println!("   │   ├── VBA Project:");
    println!("   │   │   ├── AutoRun: Auto_Open, NavigateToSlide");
    println!("   │   │   ├── DataHelpers: GetCustomData (reads Custom XML)");
    println!("   │   │   └── SlideController: Class for navigation");

    // Custom XML with structured data
    let app_config = CustomXmlPart::new(1, "presentationConfig")
        .namespace("http://company.com/pptx/config")
        .property("version", "2.1.0")
        .property("author", "Demo User")
        .property("department", "Engineering")
        .property("confidentiality", "Internal")
        .property("lastModified", "2024-01-15T10:30:00Z");
    let config_xml = app_config.to_xml()?;
    println!("   │   └── Custom XML:");
    println!("   │       ├── Namespace: http://company.com/pptx/config");
    println!("   │       ├── Properties: version, author, department, etc.");
    println!("   │       └── XML: {} bytes", config_xml.len());

    // -------------------------------------------------------------------------
    // Embedded Fonts with Variants
    // -------------------------------------------------------------------------
    println!("   ├── Embedded Font Collection:");
    let mut font_collection = EmbeddedFontCollection::new();
    font_collection.add("Corporate Sans", vec![0; 1000]);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::Bold);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::Italic);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::BoldItalic);
    font_collection.add("Code Mono", vec![0; 800]);
    let fonts_xml = font_collection.to_xml();
    println!("   │   ├── Corporate Sans: Regular, Bold, Italic, BoldItalic");
    println!("   │   ├── Code Mono: Regular");
    println!("   │   ├── Total: {} font files", font_collection.len());
    println!("   │   └── XML: {} bytes", fonts_xml.len());

    // -------------------------------------------------------------------------
    // Handout with Full Configuration
    // -------------------------------------------------------------------------
    println!("   └── Handout Master Configuration:");
    let handout = HandoutMasterPart::new()
        .layout(HandoutLayout::SlidesPerPage6)
        .header("Q1 2024 Strategy Review")
        .footer("Confidential - Internal Use Only");
    let handout_xml = handout.to_xml()?;
    println!("       ├── Layout: 6 slides per page");
    println!("       ├── Header: Q1 2024 Strategy Review");
    println!("       ├── Footer: Confidential - Internal Use Only");
    println!("       └── XML: {} bytes", handout_xml.len());

    // =========================================================================
    // Summary
    // =========================================================================
    println!("\n╔══════════════════════════════════════════════════════════════╗");
    println!("║                    Element Coverage Summary                   ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  LAYOUTS (6 types):                                          ║");
    println!("║    ✓ CenteredTitle    ✓ TitleOnly      ✓ TitleAndContent     ║");
    println!("║    ✓ TitleAndBigContent  ✓ TwoColumn   ✓ Blank               ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  TEXT FORMATTING:                                            ║");
    println!("║    ✓ Bold            ✓ Italic         ✓ Underline            ║");
    println!("║    ✓ Font Size       ✓ Font Color     ✓ Title/Content styles ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  TABLES:                                                     ║");
    println!("║    ✓ Multiple rows/columns  ✓ Bold cells  ✓ Background colors║");
    println!("║    ✓ Header styling         ✓ Position control               ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  CHARTS:                                                     ║");
    println!("║    ✓ Bar Chart       ✓ Line Chart     ✓ Pie Chart            ║");
    println!("║    ✓ Multiple series ✓ Categories                            ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  SHAPES:                                                     ║");
    println!("║    ✓ Rectangle       ✓ Ellipse        ✓ RoundedRectangle     ║");
    println!("║    ✓ Triangle        ✓ Diamond        ✓ Color fills          ║");
    println!("║    ✓ Gradient fills  ✓ Transparency   ✓ Text in shapes       ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  CONNECTORS (NEW):                                           ║");
    println!("║    ✓ Straight        ✓ Elbow          ✓ Curved               ║");
    println!("║    ✓ Arrow types     ✓ Dash styles    ✓ Line colors/widths   ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  IMAGES:                                                     ║");
    println!("║    ✓ Image placeholders  ✓ Position   ✓ Dimensions           ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  PACKAGE:                                                    ║");
    println!("║    ✓ Create PPTX     ✓ Read PPTX      ✓ Analyze contents     ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  PARTS API (NEW):                                            ║");
    println!("║    ✓ SlideLayoutPart (11 types)  ✓ SlideMasterPart           ║");
    println!("║    ✓ ThemePart (colors/fonts)    ✓ NotesSlidePart            ║");
    println!("║    ✓ AppPropertiesPart           ✓ MediaPart (10 formats)    ║");
    println!("║    ✓ TablePart (cell formatting) ✓ ContentTypesPart          ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  ELEMENTS API:                                               ║");
    println!("║    ✓ RgbColor        ✓ SchemeColor    ✓ Color enum           ║");
    println!("║    ✓ Position        ✓ Size           ✓ Transform            ║");
    println!("║    ✓ EMU conversions (inches, cm, mm, pt)                    ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  ADVANCED FEATURES (NEW):                                    ║");
    println!("║    ✓ Animation (50+ effects)  ✓ Transitions (27 types)       ║");
    println!("║    ✓ SmartArt (25 layouts)    ✓ 3D Models (GLB/GLTF/OBJ)     ║");
    println!("║    ✓ VBA Macros (.pptm)       ✓ Embedded Fonts               ║");
    println!("║    ✓ Custom XML               ✓ Handout Master               ║");
    println!("║    ✓ Table borders/alignment  ✓ Merged cells                 ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  Output: comprehensive_demo.pptx ({} slides, {} KB)         ║", 
             slides.len(), pptx_data.len() / 1024);
    println!("╚══════════════════════════════════════════════════════════════╝");

    Ok(())
}

pub fn has_notes(&self) -> bool

Check if slide has speaker notes

pub fn add_connector(self, connector: Connector) -> Self

Add a connector to the slide

Examples found in repository

examples/comprehensive_demo.rs (line 410)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    println!("╔══════════════════════════════════════════════════════════════╗");
    println!("║       PPTX-RS Element Showcase - Complete Coverage           ║");
    println!("╚══════════════════════════════════════════════════════════════╝\n");

    let mut slides = Vec::new();

    // =========================================================================
    // SLIDE 1: CenteredTitle Layout + Title Formatting
    // =========================================================================
    println!("📐 Slide 1: CenteredTitle Layout + Title Formatting");
    slides.push(
        SlideContent::new("PPTX-RS Element Showcase")
            .layout(SlideLayout::CenteredTitle)
            .title_size(54)
            .title_bold(true)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 2: TitleOnly Layout
    // =========================================================================
    println!("📐 Slide 2: TitleOnly Layout");
    slides.push(
        SlideContent::new("Section: Slide Layouts")
            .layout(SlideLayout::TitleOnly)
            .title_size(48)
            .title_bold(true)
            .title_color("C0504D")
    );

    // =========================================================================
    // SLIDE 3: TitleAndContent Layout + All Text Formatting
    // =========================================================================
    println!("📝 Slide 3: TitleAndContent + Text Formatting");
    slides.push(
        SlideContent::new("Text Formatting Options")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .title_italic(true)
            .title_underline(true)
            .title_size(44)
            .add_bullet("Normal text (default)")
            .add_bullet("Bold content text")
            .add_bullet("Italic content text")
            .add_bullet("Underlined content")
            .add_bullet("Custom font size (28pt)")
            .add_bullet("Custom color (#4F81BD)")
            .content_bold(true)
            .content_italic(true)
            .content_underline(true)
            .content_size(28)
            .content_color("4F81BD")
    );

    // =========================================================================
    // SLIDE 4: TitleAndBigContent Layout
    // =========================================================================
    println!("📐 Slide 4: TitleAndBigContent Layout");
    slides.push(
        SlideContent::new("Key Highlights")
            .layout(SlideLayout::TitleAndBigContent)
            .title_color("1F497D")
            .add_bullet("Large content area for emphasis")
            .add_bullet("Perfect for key messages")
            .add_bullet("Smaller title, bigger content")
            .content_bold(true)
            .content_size(32)
    );

    // =========================================================================
    // SLIDE 5: TwoColumn Layout
    // =========================================================================
    println!("📐 Slide 5: TwoColumn Layout");
    slides.push(
        SlideContent::new("Two Column Comparison")
            .layout(SlideLayout::TwoColumn)
            .title_color("1F497D")
            .add_bullet("Left Column Item 1")
            .add_bullet("Left Column Item 2")
            .add_bullet("Left Column Item 3")
            .add_bullet("Right Column Item 1")
            .add_bullet("Right Column Item 2")
            .add_bullet("Right Column Item 3")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 6: Blank Layout
    // =========================================================================
    println!("📐 Slide 6: Blank Layout");
    slides.push(
        SlideContent::new("")
            .layout(SlideLayout::Blank)
    );

    // =========================================================================
    // SLIDE 7: Table with All Cell Styling Options
    // =========================================================================
    println!("📊 Slide 7: Table with Cell Styling");
    let styled_table = TableBuilder::new(vec![1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Header 1").bold().background_color("1F497D"),
            TableCell::new("Header 2").bold().background_color("4F81BD"),
            TableCell::new("Header 3").bold().background_color("8064A2"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Bold Cell").bold(),
            TableCell::new("Normal Cell"),
            TableCell::new("Colored").background_color("9BBB59"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Red BG").background_color("C0504D"),
            TableCell::new("Green BG").background_color("9BBB59"),
            TableCell::new("Blue BG").background_color("4F81BD"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Row 3 Col 1"),
            TableCell::new("Row 3 Col 2"),
            TableCell::new("Row 3 Col 3").bold().background_color("F79646"),
        ]))
        .position(500000, 1800000)
        .build();
    
    slides.push(
        SlideContent::new("Table with Cell Styling")
            .table(styled_table)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 8: Charts (Bar, Line, Pie)
    // =========================================================================
    println!("📈 Slide 8: Chart Types");
    
    // Create chart data structures (for demonstration)
    let _bar_chart = ChartBuilder::new("Sales by Region", ChartType::Bar)
        .categories(vec!["North", "South", "East", "West"])
        .add_series(ChartSeries::new("2023", vec![100.0, 80.0, 120.0, 90.0]))
        .add_series(ChartSeries::new("2024", vec![120.0, 95.0, 140.0, 110.0]))
        .build();
    
    let _line_chart = ChartBuilder::new("Monthly Trend", ChartType::Line)
        .categories(vec!["Jan", "Feb", "Mar", "Apr", "May", "Jun"])
        .add_series(ChartSeries::new("Revenue", vec![10.0, 12.0, 15.0, 14.0, 18.0, 22.0]))
        .build();
    
    let _pie_chart = ChartBuilder::new("Market Share", ChartType::Pie)
        .categories(vec!["Product A", "Product B", "Product C", "Others"])
        .add_series(ChartSeries::new("Share", vec![40.0, 30.0, 20.0, 10.0]))
        .build();
    
    slides.push(
        SlideContent::new("Chart Types: Bar, Line, Pie")
            .with_chart()
            .title_color("1F497D")
            .add_bullet("Bar Chart: Compare categories")
            .add_bullet("Line Chart: Show trends over time")
            .add_bullet("Pie Chart: Show proportions")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 9: Shapes with Different Fills
    // =========================================================================
    println!("🔷 Slide 9: Shapes with Fills");
    
    let rect = Shape::new(ShapeType::Rectangle, 500000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("4F81BD"))
        .with_text("Rectangle");
    
    let ellipse = Shape::new(ShapeType::Ellipse, 3000000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("9BBB59"))
        .with_text("Ellipse");
    
    let rounded = Shape::new(ShapeType::RoundedRectangle, 5500000, 1600000, 2000000, 1000000)
        .with_fill(ShapeFill::new("C0504D"))
        .with_text("Rounded");
    
    let triangle = Shape::new(ShapeType::Triangle, 1500000, 3000000, 1500000, 1200000)
        .with_fill(ShapeFill::new("8064A2"))
        .with_text("Triangle");
    
    let diamond = Shape::new(ShapeType::Diamond, 4000000, 3000000, 1500000, 1200000)
        .with_fill(ShapeFill::new("F79646"))
        .with_text("Diamond");
    
    slides.push(
        SlideContent::new("Shape Types with Color Fills")
            .add_shape(rect)
            .add_shape(ellipse)
            .add_shape(rounded)
            .add_shape(triangle)
            .add_shape(diamond)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 10: Gradient Fills (NEW)
    // =========================================================================
    println!("🌈 Slide 10: Gradient Fills");
    
    // Horizontal gradient
    let gradient_h = Shape::new(ShapeType::Rectangle, 500000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("1565C0", "42A5F5", GradientDirection::Horizontal))
        .with_text("Horizontal");
    
    // Vertical gradient
    let gradient_v = Shape::new(ShapeType::Rectangle, 3200000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("2E7D32", "81C784", GradientDirection::Vertical))
        .with_text("Vertical");
    
    // Diagonal gradient
    let gradient_d = Shape::new(ShapeType::RoundedRectangle, 5900000, 1600000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("C62828", "EF9A9A", GradientDirection::DiagonalDown))
        .with_text("Diagonal");
    
    // Three-color gradient
    let gradient_3 = Shape::new(ShapeType::Ellipse, 1800000, 3200000, 2500000, 1200000)
        .with_gradient(GradientFill::three_color("FF6F00", "FFC107", "FFEB3B", GradientDirection::Horizontal))
        .with_text("3-Color");
    
    // Custom angle gradient
    let gradient_angle = Shape::new(ShapeType::RoundedRectangle, 4800000, 3200000, 2500000, 1200000)
        .with_gradient(GradientFill::linear("7B1FA2", "E1BEE7", GradientDirection::Angle(135)))
        .with_text("135° Angle");
    
    slides.push(
        SlideContent::new("Gradient Fills - Multiple Directions")
            .add_shape(gradient_h)
            .add_shape(gradient_v)
            .add_shape(gradient_d)
            .add_shape(gradient_3)
            .add_shape(gradient_angle)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 11: Transparency (NEW)
    // =========================================================================
    println!("👻 Slide 11: Transparency Effects");
    
    // Base shape (fully opaque)
    let base = Shape::new(ShapeType::Rectangle, 1000000, 1800000, 3000000, 2000000)
        .with_fill(ShapeFill::new("1565C0"))
        .with_text("Base (100%)");
    
    // 25% transparent overlay
    let trans_25 = Shape::new(ShapeType::Rectangle, 2000000, 2200000, 2500000, 1500000)
        .with_fill(ShapeFill::new("F44336").with_transparency(25))
        .with_line(ShapeLine::new("B71C1C", 25400))
        .with_text("25% Transparent");
    
    // 50% transparent overlay
    let trans_50 = Shape::new(ShapeType::Ellipse, 4500000, 1800000, 2500000, 2000000)
        .with_fill(ShapeFill::new("4CAF50").with_transparency(50))
        .with_line(ShapeLine::new("1B5E20", 25400))
        .with_text("50% Transparent");
    
    // 75% transparent overlay
    let trans_75 = Shape::new(ShapeType::RoundedRectangle, 5500000, 2500000, 2500000, 1500000)
        .with_fill(ShapeFill::new("FF9800").with_transparency(75))
        .with_line(ShapeLine::new("E65100", 25400))
        .with_text("75% Transparent");
    
    slides.push(
        SlideContent::new("Transparency Effects - Overlapping Shapes")
            .add_shape(base)
            .add_shape(trans_25)
            .add_shape(trans_50)
            .add_shape(trans_75)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 12: Styled Connectors (NEW)
    // =========================================================================
    println!("🔗 Slide 12: Styled Connectors");
    
    // Create shapes to connect
    let box1 = Shape::new(ShapeType::RoundedRectangle, 500000, 1800000, 1800000, 800000)
        .with_id(100)
        .with_fill(ShapeFill::new("1565C0"))
        .with_text("Start");
    
    let box2 = Shape::new(ShapeType::RoundedRectangle, 3500000, 1800000, 1800000, 800000)
        .with_id(101)
        .with_fill(ShapeFill::new("2E7D32"))
        .with_text("Process");
    
    let box3 = Shape::new(ShapeType::RoundedRectangle, 6500000, 1800000, 1800000, 800000)
        .with_id(102)
        .with_fill(ShapeFill::new("C62828"))
        .with_text("End");
    
    // Straight connector with arrow
    let conn1 = Connector::straight(2300000, 2200000, 3500000, 2200000)
        .with_line(ConnectorLine::new("1565C0", 25400))
        .with_end_arrow(ArrowType::Triangle)
        .with_arrow_size(ArrowSize::Large);
    
    // Elbow connector with stealth arrow
    let conn2 = Connector::elbow(5300000, 2200000, 6500000, 2200000)
        .with_line(ConnectorLine::new("2E7D32", 38100).with_dash(LineDash::Dash))
        .with_end_arrow(ArrowType::Stealth)
        .with_arrow_size(ArrowSize::Medium);
    
    // Curved connector examples
    let box4 = Shape::new(ShapeType::Ellipse, 1000000, 3200000, 1500000, 800000)
        .with_id(103)
        .with_fill(ShapeFill::new("7B1FA2"))
        .with_text("A");
    
    let box5 = Shape::new(ShapeType::Ellipse, 4000000, 3200000, 1500000, 800000)
        .with_id(104)
        .with_fill(ShapeFill::new("00838F"))
        .with_text("B");
    
    let box6 = Shape::new(ShapeType::Ellipse, 7000000, 3200000, 1500000, 800000)
        .with_id(105)
        .with_fill(ShapeFill::new("EF6C00"))
        .with_text("C");
    
    // Curved connector with diamond arrow
    let conn3 = Connector::curved(2500000, 3600000, 4000000, 3600000)
        .with_line(ConnectorLine::new("7B1FA2", 19050).with_dash(LineDash::DashDot))
        .with_arrows(ArrowType::Oval, ArrowType::Diamond);
    
    // Dotted connector
    let conn4 = Connector::straight(5500000, 3600000, 7000000, 3600000)
        .with_line(ConnectorLine::new("00838F", 12700).with_dash(LineDash::Dot))
        .with_end_arrow(ArrowType::Open);
    
    slides.push(
        SlideContent::new("Styled Connectors - Types, Arrows, Dashes")
            .add_shape(box1)
            .add_shape(box2)
            .add_shape(box3)
            .add_shape(box4)
            .add_shape(box5)
            .add_shape(box6)
            .add_connector(conn1)
            .add_connector(conn2)
            .add_connector(conn3)
            .add_connector(conn4)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 13: Images
    // =========================================================================
    println!("🖼️  Slide 13: Image Placeholders");
    
    let img1 = Image::new("logo.png", 2500000, 1800000, "png")
        .position(500000, 1600000);
    let img2 = Image::new("photo.jpg", 2500000, 1800000, "jpg")
        .position(3500000, 1600000);
    let img3 = Image::new("diagram.png", 2000000, 1800000, "png")
        .position(6500000, 1600000);
    
    slides.push(
        SlideContent::new("Image Placeholders")
            .add_image(img1)
            .add_image(img2)
            .add_image(img3)
            .title_color("1F497D")
    );

    // =========================================================================
    // SLIDE 11: Advanced Table with Borders & Alignment (NEW)
    // =========================================================================
    println!("📊 Slide 11: Advanced Table (borders, alignment, merged cells)");
    
    // Build advanced table using generator's TableBuilder with alignment
    let advanced_table = TableBuilder::new(vec![2000000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2024 Financial Report").bold().background_color("1F4E79").text_color("FFFFFF").align_center().font_size(14),
            TableCell::new("").background_color("1F4E79"),
            TableCell::new("").background_color("1F4E79"),
            TableCell::new("").background_color("1F4E79"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Category").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Revenue").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Expenses").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
            TableCell::new("Profit").bold().background_color("2E75B6").text_color("FFFFFF").align_center(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Product Sales").text_color("000000").align_left(),
            TableCell::new("$1,250,000").text_color("2E7D32").align_right(),
            TableCell::new("$450,000").text_color("C62828").align_right(),
            TableCell::new("$800,000").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Services").text_color("000000").align_left(),
            TableCell::new("$890,000").text_color("2E7D32").align_right(),
            TableCell::new("$320,000").text_color("C62828").align_right(),
            TableCell::new("$570,000").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Total").bold().background_color("E7E6E6").text_color("000000").align_left(),
            TableCell::new("$2,140,000").bold().background_color("E7E6E6").text_color("000000").align_right(),
            TableCell::new("$770,000").bold().background_color("E7E6E6").text_color("000000").align_right(),
            TableCell::new("$1,370,000").bold().background_color("C6EFCE").text_color("006100").align_right(),
        ]))
        .position(300000, 1600000)
        .build();
    
    slides.push(
        SlideContent::new("Financial Report - Advanced Table")
            .table(advanced_table)
            .title_color("1F4E79")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 12: Comparison Matrix Table (NEW)
    // =========================================================================
    println!("📊 Slide 12: Comparison Matrix Table");
    
    let comparison_table = TableBuilder::new(vec![2000000, 1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Feature").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Basic").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Pro").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Enterprise").bold().background_color("4472C4").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Storage").text_color("000000"),
            TableCell::new("5 GB").text_color("000000"),
            TableCell::new("50 GB").text_color("000000"),
            TableCell::new("Unlimited").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Users").text_color("000000"),
            TableCell::new("1").text_color("000000"),
            TableCell::new("10").text_color("000000"),
            TableCell::new("Unlimited").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Support").text_color("000000"),
            TableCell::new("Email").text_color("000000"),
            TableCell::new("24/7 Chat").text_color("000000"),
            TableCell::new("Dedicated").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("API Access").text_color("000000"),
            TableCell::new("No").text_color("C62828"),
            TableCell::new("Yes").text_color("2E7D32"),
            TableCell::new("Yes + Priority").bold().text_color("2E7D32"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Price/month").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$9").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$29").bold().background_color("F2F2F2").text_color("000000"),
            TableCell::new("$99").bold().background_color("F2F2F2").text_color("000000"),
        ]))
        .position(500000, 1600000)
        .build();
    
    slides.push(
        SlideContent::new("Pricing Comparison Matrix")
            .table(comparison_table)
            .title_color("4472C4")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 13: Process Flow with Shapes (NEW - SmartArt-like)
    // =========================================================================
    println!("🔷 Slide 13: Process Flow (SmartArt-style)");
    
    // Create process flow using shapes
    let step1 = Shape::new(ShapeType::RoundedRectangle, 300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("1. Research");
    let arrow1 = Shape::new(ShapeType::RightArrow, 1800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step2 = Shape::new(ShapeType::RoundedRectangle, 2300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("2. Design");
    let arrow2 = Shape::new(ShapeType::RightArrow, 3800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step3 = Shape::new(ShapeType::RoundedRectangle, 4300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("3. Develop");
    let arrow3 = Shape::new(ShapeType::RightArrow, 5800000, 2200000, 400000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let step4 = Shape::new(ShapeType::RoundedRectangle, 6300000, 2000000, 1400000, 800000)
        .with_fill(ShapeFill::new("5B9BD5"))
        .with_text("4. Deploy");
    
    slides.push(
        SlideContent::new("Development Process Flow")
            .add_shape(step1)
            .add_shape(arrow1)
            .add_shape(step2)
            .add_shape(arrow2)
            .add_shape(step3)
            .add_shape(arrow3)
            .add_shape(step4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 14: Organization Chart with Shapes (NEW)
    // =========================================================================
    println!("🔷 Slide 14: Organization Chart");
    
    // CEO at top
    let ceo = Shape::new(ShapeType::RoundedRectangle, 3500000, 1400000, 2000000, 600000)
        .with_fill(ShapeFill::new("1F4E79"))
        .with_text("CEO");
    
    // Vertical line from CEO
    let line1 = Shape::new(ShapeType::Rectangle, 4450000, 2000000, 100000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // Horizontal connector
    let hline = Shape::new(ShapeType::Rectangle, 1950000, 2400000, 5100000, 50000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // CTO, CFO, COO
    let cto = Shape::new(ShapeType::RoundedRectangle, 1000000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("CTO");
    let cfo = Shape::new(ShapeType::RoundedRectangle, 3600000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("CFO");
    let coo = Shape::new(ShapeType::RoundedRectangle, 6200000, 2600000, 1800000, 500000)
        .with_fill(ShapeFill::new("2E75B6"))
        .with_text("COO");
    
    // Vertical lines to departments
    let vline1 = Shape::new(ShapeType::Rectangle, 1850000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let vline2 = Shape::new(ShapeType::Rectangle, 4450000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let vline3 = Shape::new(ShapeType::Rectangle, 7050000, 2450000, 50000, 150000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    // Teams under CTO
    let eng = Shape::new(ShapeType::Rectangle, 500000, 3300000, 1200000, 400000)
        .with_fill(ShapeFill::new("BDD7EE"))
        .with_text("Engineering");
    let product = Shape::new(ShapeType::Rectangle, 1800000, 3300000, 1200000, 400000)
        .with_fill(ShapeFill::new("BDD7EE"))
        .with_text("Product");
    
    slides.push(
        SlideContent::new("Organization Structure")
            .add_shape(ceo)
            .add_shape(line1)
            .add_shape(hline)
            .add_shape(cto)
            .add_shape(cfo)
            .add_shape(coo)
            .add_shape(vline1)
            .add_shape(vline2)
            .add_shape(vline3)
            .add_shape(eng)
            .add_shape(product)
            .title_color("1F4E79")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 15: PDCA Cycle Diagram (NEW)
    // =========================================================================
    println!("🔷 Slide 15: PDCA Cycle Diagram");
    
    // Four quadrants for PDCA
    let plan = Shape::new(ShapeType::RoundedRectangle, 1500000, 1600000, 2500000, 1500000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("PLAN\n\nDefine goals\nand strategy");
    let do_box = Shape::new(ShapeType::RoundedRectangle, 4500000, 1600000, 2500000, 1500000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("DO\n\nImplement\nthe plan");
    let check = Shape::new(ShapeType::RoundedRectangle, 4500000, 3300000, 2500000, 1500000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("CHECK\n\nMeasure\nresults");
    let act = Shape::new(ShapeType::RoundedRectangle, 1500000, 3300000, 2500000, 1500000)
        .with_fill(ShapeFill::new("FFC000"))
        .with_text("ACT\n\nAdjust and\nimprove");
    
    // Arrows between quadrants
    let arr1 = Shape::new(ShapeType::RightArrow, 4100000, 2100000, 300000, 300000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr2 = Shape::new(ShapeType::DownArrow, 5600000, 3200000, 300000, 200000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr3 = Shape::new(ShapeType::LeftArrow, 4100000, 3800000, 300000, 300000)
        .with_fill(ShapeFill::new("A5A5A5"));
    let arr4 = Shape::new(ShapeType::UpArrow, 2600000, 3200000, 300000, 200000)
        .with_fill(ShapeFill::new("A5A5A5"));
    
    slides.push(
        SlideContent::new("PDCA Continuous Improvement Cycle")
            .add_shape(plan)
            .add_shape(do_box)
            .add_shape(check)
            .add_shape(act)
            .add_shape(arr1)
            .add_shape(arr2)
            .add_shape(arr3)
            .add_shape(arr4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 16: Pyramid Diagram (Maslow's Hierarchy) (NEW)
    // =========================================================================
    println!("🔷 Slide 16: Pyramid Diagram");
    
    // Build pyramid from bottom to top
    let level5 = Shape::new(ShapeType::Trapezoid, 500000, 4000000, 8000000, 600000)
        .with_fill(ShapeFill::new("C00000"))
        .with_text("Physiological Needs - Food, Water, Shelter");
    let level4 = Shape::new(ShapeType::Trapezoid, 1000000, 3400000, 7000000, 600000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Safety Needs - Security, Stability");
    let level3 = Shape::new(ShapeType::Trapezoid, 1500000, 2800000, 6000000, 600000)
        .with_fill(ShapeFill::new("FFC000"))
        .with_text("Love & Belonging - Relationships");
    let level2 = Shape::new(ShapeType::Trapezoid, 2000000, 2200000, 5000000, 600000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Esteem - Achievement, Respect");
    let level1 = Shape::new(ShapeType::Triangle, 2500000, 1500000, 4000000, 700000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Self-Actualization");
    
    slides.push(
        SlideContent::new("Maslow's Hierarchy of Needs")
            .add_shape(level5)
            .add_shape(level4)
            .add_shape(level3)
            .add_shape(level2)
            .add_shape(level1)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 17: Venn Diagram (NEW)
    // =========================================================================
    println!("🔷 Slide 17: Venn Diagram");
    
    // Three overlapping circles
    let circle1 = Shape::new(ShapeType::Ellipse, 1500000, 1800000, 3000000, 3000000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Skills");
    let circle2 = Shape::new(ShapeType::Ellipse, 3500000, 1800000, 3000000, 3000000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Passion");
    let circle3 = Shape::new(ShapeType::Ellipse, 2500000, 3200000, 3000000, 3000000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Market Need");
    
    // Center label
    let center = Shape::new(ShapeType::Ellipse, 3200000, 2800000, 1600000, 800000)
        .with_fill(ShapeFill::new("FFFFFF"))
        .with_text("IKIGAI");
    
    slides.push(
        SlideContent::new("Finding Your Ikigai - Venn Diagram")
            .add_shape(circle1)
            .add_shape(circle2)
            .add_shape(circle3)
            .add_shape(center)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 18: Timeline/Roadmap (NEW)
    // =========================================================================
    println!("📊 Slide 18: Project Timeline");
    
    let timeline_table = TableBuilder::new(vec![1500000, 1500000, 1500000, 1500000, 1500000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q2 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q3 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q4 2024").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Q1 2025").bold().background_color("4472C4").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Research\n& Planning").background_color("BDD7EE").text_color("1F497D"),
            TableCell::new("Design\nPhase").background_color("BDD7EE").text_color("1F497D"),
            TableCell::new("Development\nSprint 1-3").background_color("C6EFCE").text_color("006100"),
            TableCell::new("Testing\n& QA").background_color("FCE4D6").text_color("C65911"),
            TableCell::new("Launch\n& Support").background_color("E2EFDA").text_color("375623"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("✓ Complete").bold().text_color("2E7D32"),
            TableCell::new("✓ Complete").bold().text_color("2E7D32"),
            TableCell::new("In Progress").text_color("ED7D31"),
            TableCell::new("Planned").text_color("7F7F7F"),
            TableCell::new("Planned").text_color("7F7F7F"),
        ]))
        .position(300000, 2000000)
        .build();
    
    slides.push(
        SlideContent::new("Project Roadmap 2024-2025")
            .table(timeline_table)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 19: Dashboard Summary (NEW)
    // =========================================================================
    println!("🔷 Slide 19: Dashboard with KPIs");
    
    // KPI boxes
    let kpi1 = Shape::new(ShapeType::RoundedRectangle, 300000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Revenue\n\n$2.14M\n+15% YoY");
    let kpi2 = Shape::new(ShapeType::RoundedRectangle, 2500000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Customers\n\n12,450\n+22% YoY");
    let kpi3 = Shape::new(ShapeType::RoundedRectangle, 4700000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("NPS Score\n\n72\n+8 pts");
    let kpi4 = Shape::new(ShapeType::RoundedRectangle, 6900000, 1600000, 2000000, 1200000)
        .with_fill(ShapeFill::new("5B9BD5"))
        .with_text("Retention\n\n94%\n+3% YoY");
    
    // Status indicators
    let status1 = Shape::new(ShapeType::Ellipse, 1800000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    let status2 = Shape::new(ShapeType::Ellipse, 4000000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    let status3 = Shape::new(ShapeType::Ellipse, 6200000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("FFC000"));
    let status4 = Shape::new(ShapeType::Ellipse, 8400000, 2600000, 300000, 300000)
        .with_fill(ShapeFill::new("70AD47"));
    
    slides.push(
        SlideContent::new("Executive Dashboard - Q1 2024")
            .add_shape(kpi1)
            .add_shape(kpi2)
            .add_shape(kpi3)
            .add_shape(kpi4)
            .add_shape(status1)
            .add_shape(status2)
            .add_shape(status3)
            .add_shape(status4)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 20: Summary Slide (NEW)
    // =========================================================================
    println!("📝 Slide 20: Summary with Speaker Notes");
    
    slides.push(
        SlideContent::new("Summary & Next Steps")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Completed: Research, Design, Initial Development")
            .add_bullet("In Progress: Sprint 3 Development")
            .add_bullet("Next: QA Testing Phase (Q4 2024)")
            .add_bullet("Launch Target: Q1 2025")
            .add_bullet("Key Risks: Resource constraints, Timeline pressure")
            .content_size(24)
            .notes("Speaker Notes:\n\n1. Emphasize the progress made\n2. Highlight key achievements\n3. Address any concerns about timeline\n4. Open for Q&A")
    );

    // =========================================================================
    // SLIDE 21: Bullet Styles (NEW v0.2.1)
    // =========================================================================
    println!("🔢 Slide 21: Bullet Styles (NEW)");
    
    // Numbered list
    slides.push(
        SlideContent::new("Bullet Styles - Numbered List")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .with_bullet_style(BulletStyle::Number)
            .add_bullet("First numbered item")
            .add_bullet("Second numbered item")
            .add_bullet("Third numbered item")
            .add_bullet("Fourth numbered item")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 22: Lettered Lists (NEW v0.2.1)
    // =========================================================================
    println!("🔤 Slide 22: Lettered Lists (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Lettered Lists")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_lettered("Option A - First choice")
            .add_lettered("Option B - Second choice")
            .add_lettered("Option C - Third choice")
            .add_lettered("Option D - Fourth choice")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 23: Roman Numerals (NEW v0.2.1)
    // =========================================================================
    println!("🏛️ Slide 23: Roman Numerals (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Roman Numerals")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .with_bullet_style(BulletStyle::RomanUpper)
            .add_bullet("Chapter I - Introduction")
            .add_bullet("Chapter II - Background")
            .add_bullet("Chapter III - Methodology")
            .add_bullet("Chapter IV - Results")
            .add_bullet("Chapter V - Conclusion")
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 24: Custom Bullets (NEW v0.2.1)
    // =========================================================================
    println!("⭐ Slide 24: Custom Bullets (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Custom Characters")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_styled_bullet("Star bullet point", BulletStyle::Custom('★'))
            .add_styled_bullet("Arrow bullet point", BulletStyle::Custom('→'))
            .add_styled_bullet("Check bullet point", BulletStyle::Custom('✓'))
            .add_styled_bullet("Diamond bullet point", BulletStyle::Custom('◆'))
            .add_styled_bullet("Heart bullet point", BulletStyle::Custom('♥'))
            .content_size(28)
    );

    // =========================================================================
    // SLIDE 25: Sub-bullets / Hierarchy (NEW v0.2.1)
    // =========================================================================
    println!("📊 Slide 25: Sub-bullets Hierarchy (NEW)");
    
    slides.push(
        SlideContent::new("Bullet Styles - Hierarchical Lists")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Main Topic 1")
            .add_sub_bullet("Supporting detail A")
            .add_sub_bullet("Supporting detail B")
            .add_bullet("Main Topic 2")
            .add_sub_bullet("Supporting detail C")
            .add_sub_bullet("Supporting detail D")
            .add_bullet("Main Topic 3")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 26: Text Enhancements (NEW v0.2.1)
    // =========================================================================
    println!("✏️ Slide 26: Text Enhancements (NEW)");
    
    // Use BulletPoint with formatting
    let strikethrough_bullet = BulletPoint::new("Strikethrough: This text is crossed out").strikethrough();
    let highlight_bullet = BulletPoint::new("Highlight: Yellow background for emphasis").highlight("FFFF00");
    let subscript_bullet = BulletPoint::new("Subscript: H₂O - for chemical formulas").subscript();
    let superscript_bullet = BulletPoint::new("Superscript: x² - for math expressions").superscript();
    let bold_colored = BulletPoint::new("Combined: Bold + Red color").bold().color("FF0000");
    
    let mut text_enhancements_slide = SlideContent::new("Text Enhancements - New Formatting")
        .layout(SlideLayout::TitleAndContent)
        .title_color("1F497D")
        .title_bold(true)
        .content_size(24);
    text_enhancements_slide.bullets.push(strikethrough_bullet);
    text_enhancements_slide.bullets.push(highlight_bullet);
    text_enhancements_slide.bullets.push(subscript_bullet);
    text_enhancements_slide.bullets.push(superscript_bullet);
    text_enhancements_slide.bullets.push(bold_colored);
    
    slides.push(text_enhancements_slide);

    // =========================================================================
    // SLIDE 27: Font Size Presets (NEW v0.2.1)
    // =========================================================================
    println!("🔤 Slide 27: Font Size Presets (NEW)");
    
    // Demonstrate different font sizes per bullet
    let large_bullet = BulletPoint::new(&format!("LARGE: {}pt - Extra large text", font_sizes::LARGE)).font_size(font_sizes::LARGE);
    let heading_bullet = BulletPoint::new(&format!("HEADING: {}pt - Section headers", font_sizes::HEADING)).font_size(font_sizes::HEADING);
    let body_bullet = BulletPoint::new(&format!("BODY: {}pt - Regular content", font_sizes::BODY)).font_size(font_sizes::BODY);
    let small_bullet = BulletPoint::new(&format!("SMALL: {}pt - Smaller text", font_sizes::SMALL)).font_size(font_sizes::SMALL);
    let caption_bullet = BulletPoint::new(&format!("CAPTION: {}pt - Captions and notes", font_sizes::CAPTION)).font_size(font_sizes::CAPTION);
    
    let mut font_size_slide = SlideContent::new("Font Size Presets - Each line different size")
        .layout(SlideLayout::TitleAndContent)
        .title_color("1F497D")
        .title_bold(true)
        .title_size(font_sizes::TITLE);
    font_size_slide.bullets.push(large_bullet);
    font_size_slide.bullets.push(heading_bullet);
    font_size_slide.bullets.push(body_bullet);
    font_size_slide.bullets.push(small_bullet);
    font_size_slide.bullets.push(caption_bullet);
    
    slides.push(font_size_slide);

    // =========================================================================
    // SLIDE 28: Theme Colors (NEW v0.2.1)
    // =========================================================================
    println!("🎨 Slide 28: Theme Colors (NEW)");
    
    // Create shapes with theme colors
    let corporate_shape = Shape::new(ShapeType::Rectangle, 500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::CORPORATE.primary))
        .with_text("Corporate");
    
    let modern_shape = Shape::new(ShapeType::Rectangle, 2500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::MODERN.primary))
        .with_text("Modern");
    
    let vibrant_shape = Shape::new(ShapeType::Rectangle, 4500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::VIBRANT.primary))
        .with_text("Vibrant");
    
    let dark_shape = Shape::new(ShapeType::Rectangle, 6500000, 1600000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::DARK.primary))
        .with_text("Dark");
    
    let nature_shape = Shape::new(ShapeType::Rectangle, 500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::NATURE.primary))
        .with_text("Nature");
    
    let tech_shape = Shape::new(ShapeType::Rectangle, 2500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::TECH.primary))
        .with_text("Tech");
    
    let carbon_shape = Shape::new(ShapeType::Rectangle, 4500000, 2700000, 1800000, 800000)
        .with_fill(ShapeFill::new(themes::CARBON.primary))
        .with_text("Carbon");
    
    slides.push(
        SlideContent::new("Theme Color Palettes")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_shape(corporate_shape)
            .add_shape(modern_shape)
            .add_shape(vibrant_shape)
            .add_shape(dark_shape)
            .add_shape(nature_shape)
            .add_shape(tech_shape)
            .add_shape(carbon_shape)
    );

    // =========================================================================
    // SLIDE 29: Material & Carbon Design Colors (NEW v0.2.1)
    // =========================================================================
    println!("🌈 Slide 29: Material & Carbon Colors (NEW)");
    
    // Material Design colors
    let material_red = Shape::new(ShapeType::Rectangle, 500000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_RED))
        .with_text("M-Red");
    
    let material_blue = Shape::new(ShapeType::Rectangle, 1900000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_BLUE))
        .with_text("M-Blue");
    
    let material_green = Shape::new(ShapeType::Rectangle, 3300000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_GREEN))
        .with_text("M-Green");
    
    let material_orange = Shape::new(ShapeType::Rectangle, 4700000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_ORANGE))
        .with_text("M-Orange");
    
    let material_purple = Shape::new(ShapeType::Rectangle, 6100000, 1600000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::MATERIAL_PURPLE))
        .with_text("M-Purple");
    
    // Carbon Design colors
    let carbon_blue = Shape::new(ShapeType::Rectangle, 500000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_BLUE_60))
        .with_text("C-Blue");
    
    let carbon_green = Shape::new(ShapeType::Rectangle, 1900000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_GREEN_50))
        .with_text("C-Green");
    
    let carbon_red = Shape::new(ShapeType::Rectangle, 3300000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_RED_60))
        .with_text("C-Red");
    
    let carbon_purple = Shape::new(ShapeType::Rectangle, 4700000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_PURPLE_60))
        .with_text("C-Purple");
    
    let carbon_gray = Shape::new(ShapeType::Rectangle, 6100000, 2500000, 1200000, 600000)
        .with_fill(ShapeFill::new(colors::CARBON_GRAY_100))
        .with_text("C-Gray");
    
    slides.push(
        SlideContent::new("Material & Carbon Design Colors")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_shape(material_red)
            .add_shape(material_blue)
            .add_shape(material_green)
            .add_shape(material_orange)
            .add_shape(material_purple)
            .add_shape(carbon_blue)
            .add_shape(carbon_green)
            .add_shape(carbon_red)
            .add_shape(carbon_purple)
            .add_shape(carbon_gray)
    );

    // =========================================================================
    // SLIDE 30: Image from Base64 (NEW v0.2.1)
    // =========================================================================
    println!("🖼️ Slide 30: Image from Base64 (NEW)");
    
    // 1x1 red PNG pixel in base64
    let _red_pixel_base64 = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8DwHwAFBQIAX8jx0gAAAABJRU5ErkJggg==";
    
    // Create image from base64 (demonstrating the API)
    let _base64_image = ImageBuilder::from_base64(_red_pixel_base64, 914400, 914400, "PNG")
        .position(4000000, 2500000)
        .build();
    
    slides.push(
        SlideContent::new("Image Loading - New Methods")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_bullet("Image::new(path) - Load from file path")
            .add_bullet("Image::from_base64(data) - Load from base64 string")
            .add_bullet("Image::from_bytes(data) - Load from raw bytes")
            .add_bullet("ImageBuilder for fluent API configuration")
            .add_bullet("Built-in base64 decoder (no external deps)")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 31: Feature Summary (NEW v0.2.1)
    // =========================================================================
    println!("📋 Slide 31: v0.2.1 Feature Summary (NEW)");
    
    slides.push(
        SlideContent::new("New Features in v0.2.1")
            .layout(SlideLayout::TitleAndContent)
            .title_color("1F497D")
            .title_bold(true)
            .add_numbered("BulletStyle: Number, Letter, Roman, Custom")
            .add_numbered("TextFormat: Strikethrough, Highlight")
            .add_numbered("TextFormat: Subscript, Superscript")
            .add_numbered("Font size presets in prelude")
            .add_numbered("Image::from_base64 and from_bytes")
            .add_numbered("Theme color palettes (7 themes)")
            .add_numbered("Material & Carbon Design colors")
            .content_size(24)
    );

    // =========================================================================
    // SLIDE 32: Slide Show Settings - Comparison Table (REAL: embedded in presProps.xml)
    // =========================================================================
    println!("🎬 Slide 34: Slide Show Settings (Visual)");

    let show_speaker = SlideShowSettings::new().pen_color(PenColor::red());
    let show_kiosk = SlideShowSettings::kiosk();
    let _show_range = SlideShowSettings::new()
        .show_type(ShowType::Browsed)
        .slide_range(SlideRange::Range { start: 1, end: 10 })
        .without_animation(true);
    let _speaker_xml = show_speaker.to_xml();
    let _kiosk_xml = show_kiosk.to_xml();

    let show_table = TableBuilder::new(vec![2000000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Setting").bold().background_color("1F4E79").text_color("FFFFFF"),
            TableCell::new("Speaker").bold().background_color("4472C4").text_color("FFFFFF"),
            TableCell::new("Kiosk").bold().background_color("ED7D31").text_color("FFFFFF"),
            TableCell::new("Browsed").bold().background_color("70AD47").text_color("FFFFFF"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Loop").bold().background_color("D6E4F0"),
            TableCell::new("No"), TableCell::new("Yes").bold().text_color("2E7D32"),
            TableCell::new("No"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Narration").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("No").text_color("C62828"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Animation").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("Yes"),
            TableCell::new("No").text_color("C62828"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Timings").bold().background_color("D6E4F0"),
            TableCell::new("Yes"), TableCell::new("Auto"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Slide Range").bold().background_color("D6E4F0"),
            TableCell::new("All"), TableCell::new("All"),
            TableCell::new("1-10"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Pen Color").bold().background_color("D6E4F0"),
            TableCell::new("Red").text_color("FF0000"),
            TableCell::new("Red").text_color("FF0000"),
            TableCell::new("Red").text_color("FF0000"),
        ]))
        .position(300000, 1600000)
        .build();

    // Mode icons
    let icon_speaker = Shape::new(ShapeType::RoundedRectangle, 300000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Speaker: Full control");
    let icon_kiosk = Shape::new(ShapeType::RoundedRectangle, 3100000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("Kiosk: Auto-loop");
    let icon_browsed = Shape::new(ShapeType::RoundedRectangle, 5900000, 4200000, 2500000, 600000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("Browsed: Scrollbar");

    slides.push(
        SlideContent::new("Slide Show Settings - Mode Comparison")
            .table(show_table)
            .add_shape(icon_speaker)
            .add_shape(icon_kiosk)
            .add_shape(icon_browsed)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 35: Print Settings - Visual Handout Grid
    // =========================================================================
    println!("🖨️  Slide 35: Print Settings & Handouts (Visual)");

    let print = PrintSettings::new()
        .print_what(PrintWhat::Handouts)
        .color_mode(PrintColorMode::Grayscale)
        .handout_layout(GenHandoutLayout::SlidesPerPage6)
        .frame_slides(true)
        .header("Q1 2025 Strategy Review")
        .footer("Confidential - Internal Use Only")
        .print_date(true)
        .print_page_numbers(true);
    let _prnpr_xml = print.to_prnpr_xml();
    let _handout_xml = print.to_handout_master_xml();

    // Visual: 6-slide handout grid (2 cols x 3 rows)
    let hdr = Shape::new(ShapeType::Rectangle, 300000, 1500000, 4200000, 300000)
        .with_fill(ShapeFill::new("E7E6E6"))
        .with_text("Q1 2025 Strategy Review");
    // Row 1
    let s1 = Shape::new(ShapeType::Rectangle, 400000, 2000000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 1");
    let s2 = Shape::new(ShapeType::Rectangle, 2500000, 2000000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 2");
    // Row 2
    let s3 = Shape::new(ShapeType::Rectangle, 400000, 3200000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 3");
    let s4 = Shape::new(ShapeType::Rectangle, 2500000, 3200000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 4");
    // Row 3
    let s5 = Shape::new(ShapeType::Rectangle, 400000, 4400000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 5");
    let s6 = Shape::new(ShapeType::Rectangle, 2500000, 4400000, 1800000, 1100000)
        .with_line(ShapeLine::new("999999", 12700))
        .with_text("Slide 6");
    let ftr = Shape::new(ShapeType::Rectangle, 300000, 5600000, 4200000, 300000)
        .with_fill(ShapeFill::new("E7E6E6"))
        .with_text("Confidential - Internal Use Only");

    // Settings summary table on the right
    let print_table = TableBuilder::new(vec![1800000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Print Settings").bold().background_color("1F4E79").text_color("FFFFFF"),
            TableCell::new("").background_color("1F4E79"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Print What").bold().background_color("D6E4F0"),
            TableCell::new("Handouts"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Color Mode").bold().background_color("D6E4F0"),
            TableCell::new("Grayscale"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Layout").bold().background_color("D6E4F0"),
            TableCell::new("6 slides/page"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Frame Slides").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Date").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Page Numbers").bold().background_color("D6E4F0"),
            TableCell::new("Yes"),
        ]))
        .position(5000000, 1800000)
        .build();

    slides.push(
        SlideContent::new("Print Handout - 6 Slides Per Page")
            .table(print_table)
            .add_shape(hdr)
            .add_shape(s1).add_shape(s2)
            .add_shape(s3).add_shape(s4)
            .add_shape(s5).add_shape(s6)
            .add_shape(ftr)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // SLIDE 36: Advanced Table Merging - Actual Merged Table
    // =========================================================================
    println!("📊 Slide 36: Advanced Table Merging (Visual)");

    // Use TableMergeMap to compute states, then build a visual table
    let mut merge_map = TableMergeMap::new(5, 4);
    merge_map.merge_cells(0, 0, 1, 4).unwrap(); // Title row spans all 4 cols
    merge_map.merge_cells(1, 0, 2, 1).unwrap(); // "Products" spans 2 rows
    merge_map.merge_cells(3, 0, 2, 1).unwrap(); // "Services" spans 2 rows

    // Show merge state labels
    let state_00 = merge_map.cell_state(0, 0); // Anchor gridSpan=4
    let state_01 = merge_map.cell_state(0, 1); // HMerge
    let state_10 = merge_map.cell_state(1, 0); // Anchor rowSpan=2
    let state_20 = merge_map.cell_state(2, 0); // VMerge
    println!("   ├── (0,0): {}", state_00.to_xml_attrs().trim());
    println!("   ├── (0,1): {}", state_01.to_xml_attrs().trim());
    println!("   ├── (1,0): {}", state_10.to_xml_attrs().trim());
    println!("   └── (2,0): {}", state_20.to_xml_attrs().trim());

    // Build the table with REAL merge attributes (gridSpan, rowSpan, hMerge, vMerge)
    let merge_table = TableBuilder::new(vec![1500000, 2000000, 2000000, 2000000])
        .add_row(TableRow::new(vec![
            TableCell::new("Q1 2025 Revenue Report").bold().background_color("1F4E79").text_color("FFFFFF").grid_span(4),
            TableCell::new("").background_color("1F4E79").h_merge(),
            TableCell::new("").background_color("1F4E79").h_merge(),
            TableCell::new("").background_color("1F4E79").h_merge(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Products").bold().background_color("BDD7EE").text_color("1F497D").row_span(2),
            TableCell::new("Hardware").background_color("E2EFDA"),
            TableCell::new("$450,000").text_color("2E7D32").align_right(),
            TableCell::new("+12%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("").background_color("BDD7EE").v_merge(),
            TableCell::new("Software").background_color("E2EFDA"),
            TableCell::new("$680,000").text_color("2E7D32").align_right(),
            TableCell::new("+25%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("Services").bold().background_color("FCE4D6").text_color("C65911").row_span(2),
            TableCell::new("Consulting").background_color("FFF2CC"),
            TableCell::new("$320,000").text_color("2E7D32").align_right(),
            TableCell::new("+8%").bold().text_color("2E7D32").align_right(),
        ]))
        .add_row(TableRow::new(vec![
            TableCell::new("").background_color("FCE4D6").v_merge(),
            TableCell::new("Support").background_color("FFF2CC"),
            TableCell::new("$190,000").text_color("2E7D32").align_right(),
            TableCell::new("+5%").bold().text_color("2E7D32").align_right(),
        ]))
        .position(300000, 1600000)
        .build();

    // Legend shapes
    let legend_anchor = Shape::new(ShapeType::RoundedRectangle, 300000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("4472C4"))
        .with_text("Anchor (gridSpan/rowSpan)");
    let legend_hmerge = Shape::new(ShapeType::RoundedRectangle, 2500000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("ED7D31"))
        .with_text("hMerge (col covered)");
    let legend_vmerge = Shape::new(ShapeType::RoundedRectangle, 4700000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("70AD47"))
        .with_text("vMerge (row covered)");
    let legend_normal = Shape::new(ShapeType::RoundedRectangle, 6900000, 4400000, 2000000, 400000)
        .with_fill(ShapeFill::new("A5A5A5"))
        .with_text("Normal (no merge)");

    slides.push(
        SlideContent::new("Advanced Table Merging - Merged Cells")
            .table(merge_table)
            .add_shape(legend_anchor)
            .add_shape(legend_hmerge)
            .add_shape(legend_vmerge)
            .add_shape(legend_normal)
            .title_color("1F497D")
            .title_bold(true)
    );

    // =========================================================================
    // Build PresentationSettings with all advanced features
    // =========================================================================
    println!("\n⚙️  Building Presentation Settings...");

    // Slide show settings (embedded in presProps.xml as <p:showPr>)
    let show_settings = SlideShowSettings::new()
        .show_type(ShowType::Speaker)
        .pen_color(PenColor::red())
        .use_timings(true);
    println!("   ├── Slide Show: Speaker mode, red pen, timings enabled");
    println!("   │   └── XML: {} bytes", show_settings.to_xml().len());

    // Print settings (embedded in presProps.xml as <p:prnPr>)
    let print_settings = PrintSettings::new()
        .print_what(PrintWhat::Handouts)
        .color_mode(PrintColorMode::Grayscale)
        .handout_layout(GenHandoutLayout::SlidesPerPage6)
        .frame_slides(true)
        .header("Q1 2025 Strategy Review")
        .footer("Confidential - Internal Use Only")
        .print_date(true)
        .print_page_numbers(true);
    println!("   └── Print: Handouts, 6/page, grayscale, framed");
    println!("       └── XML: {} bytes", print_settings.to_prnpr_xml().len());

    let pres_settings = PresentationSettings::new()
        .slide_show(show_settings)
        .print(print_settings);
    println!("   All settings configured → presProps.xml");

    // =========================================================================
    // Generate PPTX with real integrated features
    // =========================================================================
    println!("\n📦 Generating PPTX with integrated features...");
    let pptx_data = create_pptx_with_settings(
        "PPTX-RS Element Showcase",
        slides.clone(),
        Some(pres_settings),
    )?;
    fs::write("comprehensive_demo.pptx", &pptx_data)?;
    println!("   ✓ Created comprehensive_demo.pptx ({} slides, {} bytes)", 
             slides.len(), pptx_data.len());

    // =========================================================================
    // Package Analysis - Demonstrate Reading
    // =========================================================================
    println!("\n📖 Package Analysis (Read Capability):");
    
    let package = Package::open("comprehensive_demo.pptx")?;
    let paths = package.part_paths();
    
    let slide_count = paths.iter()
        .filter(|p| p.starts_with("ppt/slides/slide") && p.ends_with(".xml"))
        .count();
    
    println!("   ├── Total parts: {}", package.part_count());
    println!("   ├── Slides: {}", slide_count);
    println!("   └── Package opened and analyzed successfully");

    // =========================================================================
    // NEW: Parts API Demonstration
    // =========================================================================
    println!("\n🧩 Parts API Demonstration:");
    
    // SlideLayoutPart - 11 layout types
    println!("   ┌── SlideLayoutPart (11 layout types):");
    let layouts = [
        LayoutType::Title,
        LayoutType::TitleAndContent,
        LayoutType::SectionHeader,
        LayoutType::TwoContent,
        LayoutType::Comparison,
        LayoutType::TitleOnly,
        LayoutType::Blank,
        LayoutType::ContentWithCaption,
        LayoutType::PictureWithCaption,
        LayoutType::TitleAndVerticalText,
        LayoutType::VerticalTitleAndText,
    ];
    for (i, layout_type) in layouts.iter().enumerate() {
        let layout = SlideLayoutPart::new(i + 1, *layout_type);
        if i < 3 {
            println!("   │   ├── {}: {} ({})", i + 1, layout_type.name(), layout.path());
        }
    }
    println!("   │   └── ... and {} more layout types", layouts.len() - 3);
    
    // SlideMasterPart
    println!("   ├── SlideMasterPart:");
    let mut master = SlideMasterPart::new(1);
    master.set_name("Custom Master");
    master.add_layout_rel_id("rId2");
    master.add_layout_rel_id("rId3");
    println!("   │   ├── Name: {}", master.name());
    println!("   │   ├── Path: {}", master.path());
    println!("   │   └── Layouts: {} linked", master.layout_rel_ids().len());
    
    // ThemePart - Colors and Fonts
    println!("   ├── ThemePart (colors & fonts):");
    let mut theme = ThemePart::new(1);
    theme.set_name("Corporate Theme");
    theme.set_major_font("Arial");
    theme.set_minor_font("Calibri");
    theme.set_color("accent1", "FF5733");
    theme.set_color("accent2", "33FF57");
    let theme_xml = theme.to_xml()?;
    println!("   │   ├── Name: {}", theme.name());
    println!("   │   ├── Major Font: Arial");
    println!("   │   ├── Minor Font: Calibri");
    println!("   │   └── XML size: {} bytes", theme_xml.len());
    
    // NotesSlidePart - Speaker notes
    println!("   ├── NotesSlidePart (speaker notes):");
    let notes = NotesSlidePart::with_text(1, "Remember to:\n- Introduce yourself\n- Explain the agenda\n- Ask for questions");
    let notes_xml = notes.to_xml()?;
    println!("   │   ├── Path: {}", notes.path());
    println!("   │   ├── Text: \"{}...\"", &notes.notes_text()[..20.min(notes.notes_text().len())]);
    println!("   │   └── XML size: {} bytes", notes_xml.len());
    
    // AppPropertiesPart - Application metadata
    println!("   ├── AppPropertiesPart (metadata):");
    let mut app_props = AppPropertiesPart::new();
    app_props.set_company("Acme Corporation");
    app_props.set_slides(slides.len() as u32);
    let app_xml = app_props.to_xml()?;
    println!("   │   ├── Company: Acme Corporation");
    println!("   │   ├── Slides: {}", slides.len());
    println!("   │   └── XML size: {} bytes", app_xml.len());
    
    // MediaPart - Video/Audio formats
    println!("   ├── MediaPart (10 media formats):");
    println!("   │   ├── Video: mp4, webm, avi, wmv, mov");
    println!("   │   ├── Audio: mp3, wav, wma, m4a, ogg");
    let sample_media = MediaPart::new(1, MediaFormat::Mp4, vec![0; 100]);
    println!("   │   └── Sample: {} ({})", sample_media.path(), sample_media.format().mime_type());
    
    // TablePart - Table with formatting
    println!("   ├── TablePart (cell formatting):");
    let table_part = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Header 1").bold().background("4472C4"),
            TableCellPart::new("Header 2").bold().background("4472C4"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Data 1").color("333333"),
            TableCellPart::new("Data 2").italic(),
        ]))
        .position(EMU_PER_INCH, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 6, EMU_PER_INCH * 2);
    let table_xml = table_part.to_slide_xml(10);
    println!("   │   ├── Rows: {}", table_part.rows.len());
    println!("   │   ├── Features: bold, italic, colors, backgrounds");
    println!("   │   └── XML size: {} bytes", table_xml.len());
    
    // ContentTypesPart
    println!("   └── ContentTypesPart:");
    let mut content_types = ContentTypesPart::new();
    content_types.add_presentation();
    content_types.add_slide(1);
    content_types.add_slide_layout(1);
    content_types.add_slide_master(1);
    content_types.add_theme(1);
    content_types.add_core_properties();
    content_types.add_app_properties();
    let ct_xml = content_types.to_xml()?;
    println!("       ├── Path: {}", content_types.path());
    println!("       └── XML size: {} bytes", ct_xml.len());

    // =========================================================================
    // NEW: Elements API Demonstration
    // =========================================================================
    println!("\n🎨 Elements API Demonstration:");
    
    // Color types
    println!("   ┌── Color Types:");
    let rgb = RgbColor::new(255, 87, 51);
    let rgb_hex = RgbColor::from_hex("#4472C4").unwrap();
    let scheme = SchemeColor::Accent1;
    let color = Color::rgb(100, 149, 237);
    println!("   │   ├── RgbColor::new(255, 87, 51) → {}", rgb.to_hex());
    println!("   │   ├── RgbColor::from_hex(\"#4472C4\") → {}", rgb_hex.to_hex());
    println!("   │   ├── SchemeColor::Accent1 → {}", scheme.as_str());
    println!("   │   └── Color::rgb(100, 149, 237) → XML: {}", color.to_xml().chars().take(30).collect::<String>());
    
    // Position and Size
    println!("   ├── Position & Size (EMU units):");
    let pos = Position::from_inches(1.0, 2.0);
    let size = Size::from_inches(4.0, 3.0);
    println!("   │   ├── Position::from_inches(1.0, 2.0) → x={}, y={}", pos.x, pos.y);
    println!("   │   ├── Size::from_inches(4.0, 3.0) → w={}, h={}", size.width, size.height);
    println!("   │   └── EMU_PER_INCH = {}", EMU_PER_INCH);
    
    // Transform
    println!("   └── Transform (position + size + rotation):");
    let transform = Transform::from_inches(1.0, 1.5, 3.0, 2.0).with_rotation(45.0);
    let transform_xml = transform.to_xml();
    println!("       ├── Transform::from_inches(1.0, 1.5, 3.0, 2.0)");
    println!("       ├── .with_rotation(45.0)");
    println!("       └── XML: {}...", &transform_xml[..50.min(transform_xml.len())]);

    // =========================================================================
    // NEW: Advanced Features Demonstration
    // =========================================================================
    println!("\n🚀 Advanced Features Demonstration:");

    // -------------------------------------------------------------------------
    // Complex Table Examples
    // -------------------------------------------------------------------------
    println!("   ┌── Complex Table Examples:");
    
    // Example 1: Financial Report Table
    println!("   │   ┌── Financial Report Table (5x4 with formatting):");
    let financial_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Q1 2024 Financial Summary")
                .col_span(4)
                .bold()
                .center()
                .background("1F4E79")
                .color("FFFFFF")
                .font_size(14)
                .font("Arial Black"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Category").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Revenue").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Expenses").bold().center().background("2E75B6").color("FFFFFF"),
            TableCellPart::new("Profit").bold().center().background("2E75B6").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Product Sales").align(HorizontalAlign::Left),
            TableCellPart::new("$1,250,000").align(HorizontalAlign::Right).color("2E7D32"),
            TableCellPart::new("$450,000").align(HorizontalAlign::Right).color("C62828"),
            TableCellPart::new("$800,000").align(HorizontalAlign::Right).bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Services").align(HorizontalAlign::Left),
            TableCellPart::new("$890,000").align(HorizontalAlign::Right).color("2E7D32"),
            TableCellPart::new("$320,000").align(HorizontalAlign::Right).color("C62828"),
            TableCellPart::new("$570,000").align(HorizontalAlign::Right).bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Total").bold().background("E7E6E6"),
            TableCellPart::new("$2,140,000").bold().align(HorizontalAlign::Right).background("E7E6E6"),
            TableCellPart::new("$770,000").bold().align(HorizontalAlign::Right).background("E7E6E6"),
            TableCellPart::new("$1,370,000").bold().align(HorizontalAlign::Right).background("C6EFCE").color("006100"),
        ]))
        .position(EMU_PER_INCH / 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 8, EMU_PER_INCH * 3);
    let fin_xml = financial_table.to_slide_xml(100);
    println!("   │   │   ├── Merged header spanning 4 columns");
    println!("   │   │   ├── Color-coded values (green=positive, red=negative)");
    println!("   │   │   ├── Custom fonts and sizes");
    println!("   │   │   └── XML: {} bytes", fin_xml.len());

    // Example 2: Comparison Matrix
    println!("   │   ├── Comparison Matrix (features vs products):");
    let matrix_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Feature").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Basic").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Pro").bold().center().background("4472C4").color("FFFFFF"),
            TableCellPart::new("Enterprise").bold().center().background("4472C4").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Storage").align(HorizontalAlign::Left),
            TableCellPart::new("5 GB").center(),
            TableCellPart::new("50 GB").center(),
            TableCellPart::new("Unlimited").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Users").align(HorizontalAlign::Left),
            TableCellPart::new("1").center(),
            TableCellPart::new("10").center(),
            TableCellPart::new("Unlimited").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Support").align(HorizontalAlign::Left),
            TableCellPart::new("Email").center(),
            TableCellPart::new("24/7 Chat").center(),
            TableCellPart::new("Dedicated").center().bold().color("2E7D32"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Price/mo").bold().background("F2F2F2"),
            TableCellPart::new("$9").center().bold().background("F2F2F2"),
            TableCellPart::new("$29").center().bold().background("F2F2F2"),
            TableCellPart::new("$99").center().bold().background("F2F2F2"),
        ]));
    println!("   │   │   └── 5x4 matrix with alternating styles");

    // Example 3: Schedule/Timeline Table
    println!("   │   └── Schedule Table (with row spans):");
    let schedule_table = TablePart::new()
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("Time").bold().center().background("70AD47").color("FFFFFF"),
            TableCellPart::new("Monday").bold().center().background("70AD47").color("FFFFFF"),
            TableCellPart::new("Tuesday").bold().center().background("70AD47").color("FFFFFF"),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("9:00 AM").center().background("E2EFDA"),
            TableCellPart::new("Team Standup").center().row_span(2).valign(VerticalAlign::Middle).background("BDD7EE"),
            TableCellPart::new("Code Review").center(),
        ]))
        .add_row(TableRowPart::new(vec![
            TableCellPart::new("10:00 AM").center().background("E2EFDA"),
            TableCellPart::merged(),
            TableCellPart::new("Sprint Planning").center().background("FCE4D6"),
        ]));
    println!("   │       └── Row spans for multi-hour events");

    // -------------------------------------------------------------------------
    // Complex Animation Sequences
    // -------------------------------------------------------------------------
    println!("   ├── Complex Animation Sequences:");
    
    // Sequence 1: Title entrance with staggered content
    println!("   │   ┌── Staggered Entrance Sequence:");
    let title_anim = Animation::new(2, AnimationEffect::Fade)
        .trigger(AnimationTrigger::OnClick)
        .duration(500);
    let content1 = Animation::new(3, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(200);
    let content2 = Animation::new(4, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(100);
    let content3 = Animation::new(5, AnimationEffect::FlyIn)
        .trigger(AnimationTrigger::AfterPrevious)
        .direction(AnimationDirection::Left)
        .duration(400)
        .delay(100);
    let staggered = SlideAnimations::new()
        .add(title_anim)
        .add(content1)
        .add(content2)
        .add(content3)
        .transition(SlideTransition::new(TransitionEffect::Push).direction(AnimationDirection::Left).duration(750));
    let staggered_xml = staggered.to_timing_xml()?;
    println!("   │   │   ├── Title: Fade on click");
    println!("   │   │   ├── Content 1-3: FlyIn with 100ms stagger");
    println!("   │   │   ├── Transition: Push from left (750ms)");
    println!("   │   │   └── XML: {} bytes", staggered_xml.len());

    // Sequence 2: Emphasis and exit
    println!("   │   ├── Emphasis + Exit Sequence:");
    let emphasis = Animation::new(6, AnimationEffect::Pulse)
        .trigger(AnimationTrigger::OnClick)
        .duration(1000)
        .repeat(3);
    let exit = Animation::new(6, AnimationEffect::FadeOut)
        .trigger(AnimationTrigger::AfterPrevious)
        .duration(500);
    let emphasis_seq = SlideAnimations::new()
        .add(emphasis)
        .add(exit);
    println!("   │   │   ├── Pulse 3x on click, then fade out");
    println!("   │   │   └── Same shape, sequential effects");

    // Sequence 3: Motion path
    println!("   │   └── Motion Path Animation:");
    let motion = Animation::new(7, AnimationEffect::Lines)
        .trigger(AnimationTrigger::OnClick)
        .duration(2000);
    println!("   │       └── Custom path: Lines, Arcs, Turns, Loops");

    // -------------------------------------------------------------------------
    // SmartArt Combinations
    // -------------------------------------------------------------------------
    println!("   ├── SmartArt Layout Examples:");
    
    // Process flow
    println!("   │   ┌── Process Flow (5 steps):");
    let process = SmartArtPart::new(1, SmartArtLayout::BasicProcess)
        .add_items(vec!["Research", "Design", "Develop", "Test", "Deploy"])
        .position(EMU_PER_INCH / 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 8, EMU_PER_INCH * 2);
    println!("   │   │   └── {} nodes in horizontal flow", process.nodes().len());

    // Organization chart
    println!("   │   ├── Organization Chart:");
    let org = SmartArtPart::new(2, SmartArtLayout::OrgChart)
        .add_items(vec!["CEO", "CTO", "CFO", "VP Engineering", "VP Sales"]);
    println!("   │   │   └── Hierarchical structure with {} positions", org.nodes().len());

    // Cycle diagram
    println!("   │   ├── Cycle Diagram:");
    let cycle = SmartArtPart::new(3, SmartArtLayout::BasicCycle)
        .add_items(vec!["Plan", "Do", "Check", "Act"]);
    println!("   │   │   └── PDCA cycle with {} phases", cycle.nodes().len());

    // Venn diagram
    println!("   │   ├── Venn Diagram:");
    let venn = SmartArtPart::new(4, SmartArtLayout::BasicVenn)
        .add_items(vec!["Skills", "Passion", "Market Need"]);
    println!("   │   │   └── 3-circle Venn for Ikigai concept");

    // Pyramid
    println!("   │   └── Pyramid:");
    let pyramid = SmartArtPart::new(5, SmartArtLayout::BasicPyramid)
        .add_items(vec!["Self-Actualization", "Esteem", "Love/Belonging", "Safety", "Physiological"]);
    println!("   │       └── Maslow's hierarchy with {} levels", pyramid.nodes().len());

    // -------------------------------------------------------------------------
    // 3D Model Configurations
    // -------------------------------------------------------------------------
    println!("   ├── 3D Model Configurations:");
    
    // Product showcase
    println!("   │   ┌── Product Showcase:");
    let product_3d = Model3DPart::new(1, Model3DFormat::Glb, vec![0; 100])
        .camera(CameraPreset::IsometricTopUp)
        .rotation(0.0, 45.0, 0.0)
        .zoom(1.2)
        .position(EMU_PER_INCH * 2, EMU_PER_INCH * 2)
        .size(EMU_PER_INCH * 4, EMU_PER_INCH * 4);
    println!("   │   │   ├── Camera: Isometric top-up view");
    println!("   │   │   ├── Rotation: 45° Y-axis for best angle");
    println!("   │   │   └── Zoom: 1.2x for detail");

    // Architectural model
    println!("   │   ├── Architectural Model:");
    let arch_3d = Model3DPart::new(2, Model3DFormat::Gltf, vec![0; 100])
        .camera(CameraPreset::Front)
        .rotation(15.0, -30.0, 0.0)
        .ambient_light("FFFFCC");
    println!("   │   │   ├── Camera: Front view with tilt");
    println!("   │   │   └── Ambient: Warm lighting (FFFFCC)");

    // Technical diagram
    println!("   │   └── Technical Diagram:");
    let tech_3d = Model3DPart::new(3, Model3DFormat::Obj, vec![0; 100])
        .camera(CameraPreset::IsometricOffAxis1Top)
        .rotation(0.0, 0.0, 0.0);
    println!("   │       └── Camera: Off-axis isometric for exploded view");

    // -------------------------------------------------------------------------
    // Theme + Master + Layout Combination
    // -------------------------------------------------------------------------
    println!("   ├── Theme + Master + Layout Integration:");
    
    // Corporate theme
    let mut corp_theme = ThemePart::new(1);
    corp_theme.set_name("Corporate Blue");
    corp_theme.set_major_font("Segoe UI");
    corp_theme.set_minor_font("Segoe UI Light");
    corp_theme.set_color("dk1", "000000");
    corp_theme.set_color("lt1", "FFFFFF");
    corp_theme.set_color("dk2", "1F497D");
    corp_theme.set_color("lt2", "EEECE1");
    corp_theme.set_color("accent1", "4472C4");
    corp_theme.set_color("accent2", "ED7D31");
    corp_theme.set_color("accent3", "A5A5A5");
    corp_theme.set_color("accent4", "FFC000");
    corp_theme.set_color("accent5", "5B9BD5");
    corp_theme.set_color("accent6", "70AD47");
    let theme_xml = corp_theme.to_xml()?;
    println!("   │   ├── Theme: Corporate Blue");
    println!("   │   │   ├── Fonts: Segoe UI / Segoe UI Light");
    println!("   │   │   ├── 12 color slots defined");
    println!("   │   │   └── XML: {} bytes", theme_xml.len());

    // Master with multiple layouts
    let mut corp_master = SlideMasterPart::new(1);
    corp_master.set_name("Corporate Master");
    corp_master.add_layout_rel_id("rId2"); // Title
    corp_master.add_layout_rel_id("rId3"); // Title + Content
    corp_master.add_layout_rel_id("rId4"); // Section Header
    corp_master.add_layout_rel_id("rId5"); // Two Content
    corp_master.add_layout_rel_id("rId6"); // Comparison
    corp_master.add_layout_rel_id("rId7"); // Title Only
    corp_master.add_layout_rel_id("rId8"); // Blank
    println!("   │   └── Master: {} with {} layouts linked", corp_master.name(), corp_master.layout_rel_ids().len());

    // -------------------------------------------------------------------------
    // VBA + Custom XML Integration
    // -------------------------------------------------------------------------
    println!("   ├── VBA + Custom XML Integration:");
    
    // VBA with multiple modules
    let vba_project = VbaProjectPart::new()
        .add_module(VbaModule::new("AutoRun", r#"
Sub Auto_Open()
    MsgBox "Welcome to the presentation!"
End Sub

Sub NavigateToSlide(slideNum As Integer)
    SlideShowWindows(1).View.GotoSlide slideNum
End Sub
"#))
        .add_module(VbaModule::new("DataHelpers", r#"
Function GetCustomData(key As String) As String
    ' Read from Custom XML part
    GetCustomData = ActivePresentation.CustomXMLParts(1).SelectSingleNode("//" & key).Text
End Function
"#))
        .add_module(VbaModule::class("SlideController", r#"
Private currentSlide As Integer

Public Sub NextSlide()
    currentSlide = currentSlide + 1
    NavigateToSlide currentSlide
End Sub
"#));
    println!("   │   ├── VBA Project:");
    println!("   │   │   ├── AutoRun: Auto_Open, NavigateToSlide");
    println!("   │   │   ├── DataHelpers: GetCustomData (reads Custom XML)");
    println!("   │   │   └── SlideController: Class for navigation");

    // Custom XML with structured data
    let app_config = CustomXmlPart::new(1, "presentationConfig")
        .namespace("http://company.com/pptx/config")
        .property("version", "2.1.0")
        .property("author", "Demo User")
        .property("department", "Engineering")
        .property("confidentiality", "Internal")
        .property("lastModified", "2024-01-15T10:30:00Z");
    let config_xml = app_config.to_xml()?;
    println!("   │   └── Custom XML:");
    println!("   │       ├── Namespace: http://company.com/pptx/config");
    println!("   │       ├── Properties: version, author, department, etc.");
    println!("   │       └── XML: {} bytes", config_xml.len());

    // -------------------------------------------------------------------------
    // Embedded Fonts with Variants
    // -------------------------------------------------------------------------
    println!("   ├── Embedded Font Collection:");
    let mut font_collection = EmbeddedFontCollection::new();
    font_collection.add("Corporate Sans", vec![0; 1000]);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::Bold);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::Italic);
    font_collection.add_with_type("Corporate Sans", vec![0; 1000], FontEmbedType::BoldItalic);
    font_collection.add("Code Mono", vec![0; 800]);
    let fonts_xml = font_collection.to_xml();
    println!("   │   ├── Corporate Sans: Regular, Bold, Italic, BoldItalic");
    println!("   │   ├── Code Mono: Regular");
    println!("   │   ├── Total: {} font files", font_collection.len());
    println!("   │   └── XML: {} bytes", fonts_xml.len());

    // -------------------------------------------------------------------------
    // Handout with Full Configuration
    // -------------------------------------------------------------------------
    println!("   └── Handout Master Configuration:");
    let handout = HandoutMasterPart::new()
        .layout(HandoutLayout::SlidesPerPage6)
        .header("Q1 2024 Strategy Review")
        .footer("Confidential - Internal Use Only");
    let handout_xml = handout.to_xml()?;
    println!("       ├── Layout: 6 slides per page");
    println!("       ├── Header: Q1 2024 Strategy Review");
    println!("       ├── Footer: Confidential - Internal Use Only");
    println!("       └── XML: {} bytes", handout_xml.len());

    // =========================================================================
    // Summary
    // =========================================================================
    println!("\n╔══════════════════════════════════════════════════════════════╗");
    println!("║                    Element Coverage Summary                   ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  LAYOUTS (6 types):                                          ║");
    println!("║    ✓ CenteredTitle    ✓ TitleOnly      ✓ TitleAndContent     ║");
    println!("║    ✓ TitleAndBigContent  ✓ TwoColumn   ✓ Blank               ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  TEXT FORMATTING:                                            ║");
    println!("║    ✓ Bold            ✓ Italic         ✓ Underline            ║");
    println!("║    ✓ Font Size       ✓ Font Color     ✓ Title/Content styles ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  TABLES:                                                     ║");
    println!("║    ✓ Multiple rows/columns  ✓ Bold cells  ✓ Background colors║");
    println!("║    ✓ Header styling         ✓ Position control               ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  CHARTS:                                                     ║");
    println!("║    ✓ Bar Chart       ✓ Line Chart     ✓ Pie Chart            ║");
    println!("║    ✓ Multiple series ✓ Categories                            ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  SHAPES:                                                     ║");
    println!("║    ✓ Rectangle       ✓ Ellipse        ✓ RoundedRectangle     ║");
    println!("║    ✓ Triangle        ✓ Diamond        ✓ Color fills          ║");
    println!("║    ✓ Gradient fills  ✓ Transparency   ✓ Text in shapes       ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  CONNECTORS (NEW):                                           ║");
    println!("║    ✓ Straight        ✓ Elbow          ✓ Curved               ║");
    println!("║    ✓ Arrow types     ✓ Dash styles    ✓ Line colors/widths   ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  IMAGES:                                                     ║");
    println!("║    ✓ Image placeholders  ✓ Position   ✓ Dimensions           ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  PACKAGE:                                                    ║");
    println!("║    ✓ Create PPTX     ✓ Read PPTX      ✓ Analyze contents     ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  PARTS API (NEW):                                            ║");
    println!("║    ✓ SlideLayoutPart (11 types)  ✓ SlideMasterPart           ║");
    println!("║    ✓ ThemePart (colors/fonts)    ✓ NotesSlidePart            ║");
    println!("║    ✓ AppPropertiesPart           ✓ MediaPart (10 formats)    ║");
    println!("║    ✓ TablePart (cell formatting) ✓ ContentTypesPart          ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  ELEMENTS API:                                               ║");
    println!("║    ✓ RgbColor        ✓ SchemeColor    ✓ Color enum           ║");
    println!("║    ✓ Position        ✓ Size           ✓ Transform            ║");
    println!("║    ✓ EMU conversions (inches, cm, mm, pt)                    ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  ADVANCED FEATURES (NEW):                                    ║");
    println!("║    ✓ Animation (50+ effects)  ✓ Transitions (27 types)       ║");
    println!("║    ✓ SmartArt (25 layouts)    ✓ 3D Models (GLB/GLTF/OBJ)     ║");
    println!("║    ✓ VBA Macros (.pptm)       ✓ Embedded Fonts               ║");
    println!("║    ✓ Custom XML               ✓ Handout Master               ║");
    println!("║    ✓ Table borders/alignment  ✓ Merged cells                 ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  Output: comprehensive_demo.pptx ({} slides, {} KB)         ║", 
             slides.len(), pptx_data.len() / 1024);
    println!("╚══════════════════════════════════════════════════════════════╝");

    Ok(())
}

pub fn with_connectors(self, connectors: Vec<Connector>) -> Self

Add multiple connectors to the slide

pub fn add_video(self, video: Video) -> Self

Add a video to the slide

pub fn with_videos(self, videos: Vec<Video>) -> Self

Add multiple videos to the slide

pub fn add_audio(self, audio: Audio) -> Self

Add an audio file to the slide

pub fn with_audios(self, audios: Vec<Audio>) -> Self

Add multiple audio files to the slide

pub fn add_chart(self, chart: Chart) -> Self

Add a chart to the slide

pub fn with_charts(self, charts: Vec<Chart>) -> Self

Add multiple charts to the slide

pub fn with_ink(self, ink: InkAnnotations) -> Self

Add ink annotations to the slide

pub fn has_media(&self) -> bool

Check if slide has any media

pub fn has_connectors(&self) -> bool

Check if slide has connectors

Trait Implementations

impl Clone for SlideContent

fn clone(&self) -> SlideContent

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SlideContent

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.