Struct RgbColor 

pub struct RgbColor {
    pub r: u8,
    pub g: u8,
    pub b: u8,
}

RGB color (6-digit hex)

Fields

r: u8

g: u8

b: u8

Implementations

impl RgbColor

pub fn new(r: u8, g: u8, b: u8) -> Self

Create a new RGB color

Examples found in repository

examples/comprehensive_demo.rs (line 2142)

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 = rect(0.5, 1.75, 2.2, 1.1)
        .fill(hex("4F81BD"))
        .text("Rectangle");

    let ellipse_shape = ellipse(3.3, 1.75, 2.2, 1.1)
        .fill(hex("9BBB59"))
        .text("Ellipse");

    let rounded = rounded_rect(6.0, 1.75, 2.2, 1.1)
        .fill(hex("C0504D"))
        .text("Rounded");

    let triangle_shape = triangle(1.6, 3.3, 1.6, 1.3)
        .fill(hex("8064A2"))
        .text("Triangle");

    let diamond_shape = diamond(4.4, 3.3, 1.6, 1.3)
        .fill(hex("F79646"))
        .text("Diamond");

    slides.push(
        SlideContent::new("Shape Types with Color Fills")
            .add_shape(rect_shape)
            .add_shape(ellipse_shape)
            .add_shape(rounded)
            .add_shape(triangle_shape)
            .add_shape(diamond_shape)
            .title_color("1F497D"),
    );

    // =========================================================================
    // SLIDE 10: Gradient Fills (NEW)
    // =========================================================================
    println!("🌈 Slide 10: Gradient Fills");

    // Horizontal gradient
    let gradient_h = rect(0.5, 1.75, 2.7, 1.3)
        .with_gradient(GradientFill::linear(
            "1565C0",
            "42A5F5",
            GradientDirection::Horizontal,
        ))
        .text("Horizontal");

    // Vertical gradient
    let gradient_v = rect(3.5, 1.75, 2.7, 1.3)
        .with_gradient(GradientFill::linear(
            "2E7D32",
            "81C784",
            GradientDirection::Vertical,
        ))
        .text("Vertical");

    // Diagonal gradient
    let gradient_d = rounded_rect(6.5, 1.75, 2.7, 1.3)
        .with_gradient(GradientFill::linear(
            "C62828",
            "EF9A9A",
            GradientDirection::DiagonalDown,
        ))
        .text("Diagonal");

    // Three-color gradient
    let gradient_3 = ellipse(2.0, 3.5, 2.7, 1.3)
        .with_gradient(GradientFill::three_color(
            "FF6F00",
            "FFC107",
            "FFEB3B",
            GradientDirection::Horizontal,
        ))
        .text("3-Color");

    // Custom angle gradient
    let gradient_angle = rounded_rect(5.2, 3.5, 2.7, 1.3)
        .with_gradient(GradientFill::linear(
            "7B1FA2",
            "E1BEE7",
            GradientDirection::Angle(135),
        ))
        .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 = rect(1.1, 2.0, 3.3, 2.2)
        .fill(hex("1565C0"))
        .text("Base (100%)");

    // 25% transparent overlay
    let trans_25 = rect(2.2, 2.4, 2.7, 1.6)
        .fill(ColorValue::from_hex("F44336").transparent(25).to_color())
        .stroke(hex("B71C1C"), 2.0)
        .text("25% Transparent");

    // 50% transparent overlay
    let trans_50 = ellipse(4.9, 2.0, 2.7, 2.2)
        .fill(ColorValue::from_hex("4CAF50").transparent(50).to_color())
        .stroke(hex("1B5E20"), 2.0)
        .text("50% Transparent");

    // 75% transparent overlay
    let trans_75 = rounded_rect(6.0, 2.7, 2.7, 1.6)
        .fill(ColorValue::from_hex("FF9800").transparent(75).to_color())
        .stroke(hex("E65100"), 2.0)
        .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 = rounded_rect(0.5, 2.0, 2.0, 0.9)
        .with_id(100)
        .fill(hex("1565C0"))
        .text("Start");

    let box2 = rounded_rect(3.8, 2.0, 2.0, 0.9)
        .with_id(101)
        .fill(hex("2E7D32"))
        .text("Process");

    let box3 = rounded_rect(7.1, 2.0, 2.0, 0.9)
        .with_id(102)
        .fill(hex("C62828"))
        .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 = ellipse(1.1, 3.5, 1.6, 0.9)
        .with_id(103)
        .fill(hex("7B1FA2"))
        .text("A");

    let box5 = ellipse(4.4, 3.5, 1.6, 0.9)
        .with_id(104)
        .fill(hex("00838F"))
        .text("B");

    let box6 = ellipse(7.7, 3.5, 1.6, 0.9)
        .with_id(105)
        .fill(hex("EF6C00"))
        .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 with Shadow Effects
    // =========================================================================
    println!("🖼️  Slide 13: Images with Shadow Effects");

    // Dynamically load optimized stock photos from assets folder
    let assets_dir = "examples/assets";
    let mut stock_photos: Vec<(Vec<u8>, String, String)> = Vec::new();

    // Scan for optimized image files in assets folder
    if let Ok(entries) = std::fs::read_dir(assets_dir) {
        let mut files: Vec<_> = entries.flatten().collect();
        files.sort_by_key(|e| e.file_name());

        for entry in files {
            if let Some(filename) = entry.file_name().to_str() {
                // Skip text files
                if filename.ends_with(".txt") {
                    continue;
                }

                if let Ok(path) = entry.path().canonicalize() {
                    if let Some(ext) = path.extension() {
                        let ext_str = ext.to_string_lossy().to_lowercase();
                        if ext_str == "jpg" || ext_str == "jpeg" || ext_str == "png" {
                            if let Ok(bytes) = std::fs::read(&path) {
                                let format = if ext_str == "png" { "PNG" } else { "JPEG" };
                                let size_kb = bytes.len() as f64 / 1024.0;
                                stock_photos.push((
                                    bytes,
                                    format.to_string(),
                                    filename.to_string(),
                                ));
                                println!("   Loaded: {} ({:.1} KB)", filename, size_kb);
                            }
                        }
                    }
                }
            }
        }
    }

    // Use first 3 photos, or repeat if fewer available
    if stock_photos.is_empty() {
        panic!("No stock photos found in examples/assets/");
    }
    let photo_count = stock_photos.len();
    let photo1 = &stock_photos[0 % photo_count];
    let photo2 = &stock_photos[1 % photo_count];
    let photo3 = &stock_photos[2 % photo_count];

    // SLIDE 13: Shadow Effects
    let img1_shadow = ImageBuilder::auto(photo1.0.clone())
        .size(inches(2.2), inches(2.2))
        .at(inches(0.5), inches(1.6))
        .shadow()
        .build();
    let img2_shadow = ImageBuilder::auto(photo2.0.clone())
        .size(inches(2.7), inches(2.0))
        .at(inches(3.5), inches(1.6))
        .shadow()
        .build();
    let img3_shadow = ImageBuilder::auto(photo3.0.clone())
        .size(inches(2.5), inches(2.0))
        .at(inches(6.8), inches(1.6))
        .shadow()
        .build();

    slides.push(
        SlideContent::new("Image Effects: Shadow (Outer Shadow)")
            .add_image(img1_shadow)
            .add_image(img2_shadow)
            .add_image(img3_shadow)
            .title_color("1F497D"),
    );

    // =========================================================================
    // SLIDE 14: Images with Reflection Effects
    // =========================================================================
    println!("🖼️  Slide 14: Images with Reflection Effects");

    let img1_reflection = ImageBuilder::auto(photo1.0.clone())
        .size(inches(2.4), inches(2.4))
        .at(inches(0.9), inches(1.3))
        .reflection()
        .build();
    let img2_reflection = ImageBuilder::auto(photo2.0.clone())
        .size(inches(3.1), inches(2.2))
        .at(inches(3.8), inches(1.3))
        .reflection()
        .build();
    let img3_reflection = ImageBuilder::auto(photo3.0.clone())
        .size(inches(2.6), inches(2.2))
        .at(inches(7.1), inches(1.3))
        .reflection()
        .build();

    slides.push(
        SlideContent::new("Image Effects: Reflection (Mirror Effect)")
            .add_image(img1_reflection)
            .add_image(img2_reflection)
            .add_image(img3_reflection)
            .title_color("2E75B5"),
    );

    // =========================================================================
    // SLIDE 15: Images with Cropping
    // =========================================================================
    println!("🖼️  Slide 15: Images with Cropping");

    let img1_crop = ImageBuilder::auto(photo1.0.clone())
        .size(inches(2.0), inches(2.0))
        .at(inches(1.3), inches(2.0))
        .crop(0.1, 0.1, 0.1, 0.1)
        .build();
    let img2_crop = ImageBuilder::auto(photo2.0.clone())
        .size(inches(3.8), inches(1.6))
        .at(inches(3.8), inches(2.0))
        .crop(0.0, 0.2, 0.0, 0.2)
        .build();
    let img3_crop = ImageBuilder::auto(photo3.0.clone())
        .size(inches(2.2), inches(2.2))
        .at(inches(7.9), inches(2.0))
        .crop(0.15, 0.0, 0.15, 0.0)
        .build();

    slides.push(
        SlideContent::new("Image Cropping: All Sides, Top/Bottom, Left/Right")
            .add_image(img1_crop)
            .add_image(img2_crop)
            .add_image(img3_crop)
            .title_color("70AD47"),
    );

    // =========================================================================
    // SLIDE 16: Images with Glow Effects
    // =========================================================================
    println!("🖼️  Slide 16: Images with Glow Effects");

    let img1_glow = ImageBuilder::auto(photo1.0.clone())
        .size(inches(2.4), inches(2.4))
        .at(inches(1.0), inches(1.5))
        .glow()
        .build();
    let img2_glow = ImageBuilder::auto(photo2.0.clone())
        .size(inches(2.9), inches(2.1))
        .at(inches(4.0), inches(1.5))
        .glow()
        .build();
    let img3_glow = ImageBuilder::auto(photo3.0.clone())
        .size(inches(2.5), inches(2.1))
        .at(inches(7.2), inches(1.5))
        .glow()
        .build();

    slides.push(
        SlideContent::new("Image Effects: Glow (Golden Aura)")
            .add_image(img1_glow)
            .add_image(img2_glow)
            .add_image(img3_glow)
            .title_color("C55A11"),
    );

    // =========================================================================
    // SLIDE 17: Images with Soft Edges
    // =========================================================================
    println!("🖼️  Slide 17: Images with Soft Edges");

    let img1_soft = ImageBuilder::auto(photo1.0.clone())
        .size(inches(2.4), inches(2.4))
        .at(inches(1.0), inches(1.5))
        .soft_edges()
        .build();
    let img2_soft = ImageBuilder::auto(photo2.0.clone())
        .size(inches(2.9), inches(2.1))
        .at(inches(4.0), inches(1.5))
        .soft_edges()
        .build();
    let img3_soft = ImageBuilder::auto(photo3.0.clone())
        .size(inches(2.5), inches(2.1))
        .at(inches(7.2), inches(1.5))
        .soft_edges()
        .build();

    slides.push(
        SlideContent::new("Image Effects: Soft Edges (Feathered)")
            .add_image(img1_soft)
            .add_image(img2_soft)
            .add_image(img3_soft)
            .title_color("9B59B6"),
    );

    // =========================================================================
    // SLIDE 18: Images with Inner Shadow
    // =========================================================================
    println!("🖼️  Slide 18: Images with Inner Shadow");

    let img1_inner = ImageBuilder::auto(photo1.0.clone())
        .size(inches(2.4), inches(2.4))
        .at(inches(1.0), inches(1.5))
        .inner_shadow()
        .build();
    let img2_inner = ImageBuilder::auto(photo2.0.clone())
        .size(inches(2.9), inches(2.1))
        .at(inches(4.0), inches(1.5))
        .inner_shadow()
        .build();
    let img3_inner = ImageBuilder::auto(photo3.0.clone())
        .size(inches(2.5), inches(2.1))
        .at(inches(7.2), inches(1.5))
        .inner_shadow()
        .build();

    slides.push(
        SlideContent::new("Image Effects: Inner Shadow (Depth)")
            .add_image(img1_inner)
            .add_image(img2_inner)
            .add_image(img3_inner)
            .title_color("E74C3C"),
    );

    // =========================================================================
    // SLIDE 19: Images with Blur Effect
    // =========================================================================
    println!("🖼️  Slide 19: Images with Blur Effect");

    let img1_blur = ImageBuilder::auto(photo1.0.clone())
        .size(inches(2.4), inches(2.4))
        .at(inches(1.0), inches(1.5))
        .blur()
        .build();
    let img2_blur = ImageBuilder::auto(photo2.0.clone())
        .size(inches(2.9), inches(2.1))
        .at(inches(4.0), inches(1.5))
        .blur()
        .build();
    let img3_blur = ImageBuilder::auto(photo3.0.clone())
        .size(inches(2.5), inches(2.1))
        .at(inches(7.2), inches(1.5))
        .blur()
        .build();

    slides.push(
        SlideContent::new("Image Effects: Blur (Artistic)")
            .add_image(img1_blur)
            .add_image(img2_blur)
            .add_image(img3_blur)
            .title_color("3498DB"),
    );

    // =========================================================================
    // SLIDE 20: Images with Combined Effects
    // =========================================================================
    println!("🖼️  Slide 20: Images with Combined Effects");

    let img1_combined = ImageBuilder::auto(photo1.0.clone())
        .size(inches(2.4), inches(2.4))
        .at(inches(1.0), inches(1.5))
        .shadow()
        .reflection()
        .build();
    let img2_combined = ImageBuilder::auto(photo2.0.clone())
        .size(inches(2.9), inches(2.1))
        .at(inches(4.0), inches(1.5))
        .shadow()
        .reflection()
        .build();
    let img3_combined = ImageBuilder::auto(photo3.0.clone())
        .size(inches(2.5), inches(2.1))
        .at(inches(7.2), inches(1.5))
        .shadow()
        .reflection()
        .build();

    slides.push(
        SlideContent::new("Combined Effects: Shadow + Reflection")
            .add_image(img1_combined)
            .add_image(img2_combined)
            .add_image(img3_combined)
            .title_color("16A085"),
    );

    // =========================================================================
    // 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 = rounded_rect(0.3, 2.2, 1.5, 0.9)
        .fill(hex("4472C4"))
        .text("1. Research");
    let arrow1 = shapes::arrow_right(2.0, 2.4, 0.4, 0.4).fill(hex("A5A5A5"));
    let step2 = rounded_rect(2.5, 2.2, 1.5, 0.9)
        .fill(hex("ED7D31"))
        .text("2. Design");
    let arrow2 = shapes::arrow_right(4.2, 2.4, 0.4, 0.4).fill(hex("A5A5A5"));
    let step3 = rounded_rect(4.7, 2.2, 1.5, 0.9)
        .fill(hex("70AD47"))
        .text("3. Develop");
    let arrow3 = shapes::arrow_right(6.3, 2.4, 0.4, 0.4).fill(hex("A5A5A5"));
    let step4 = rounded_rect(6.9, 2.2, 1.5, 0.9)
        .fill(hex("5B9BD5"))
        .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 = rounded_rect(3.8, 1.5, 2.2, 0.7)
        .fill(hex("1F4E79"))
        .text("CEO");

    // Vertical line from CEO
    let line1 = rect(4.9, 2.2, 0.1, 0.4).fill(hex("A5A5A5"));

    // Horizontal connector
    let hline = rect(2.1, 2.6, 5.6, 0.05).fill(hex("A5A5A5"));

    // CTO, CFO, COO
    let cto = rounded_rect(1.1, 2.8, 2.0, 0.5)
        .fill(hex("2E75B6"))
        .text("CTO");
    let cfo = rounded_rect(3.9, 2.8, 2.0, 0.5)
        .fill(hex("2E75B6"))
        .text("CFO");
    let coo = rounded_rect(6.8, 2.8, 2.0, 0.5)
        .fill(hex("2E75B6"))
        .text("COO");

    // Vertical lines to departments
    let vline1 = rect(2.0, 2.7, 0.05, 0.16).fill(hex("A5A5A5"));
    let vline2 = rect(4.9, 2.7, 0.05, 0.16).fill(hex("A5A5A5"));
    let vline3 = rect(7.7, 2.7, 0.05, 0.16).fill(hex("A5A5A5"));

    // Teams under CTO
    let eng = rect(0.5, 3.6, 1.3, 0.4)
        .fill(hex("BDD7EE"))
        .text("Engineering");
    let product = rect(2.0, 3.6, 1.3, 0.4).fill(hex("BDD7EE")).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 = rounded_rect(1.6, 1.75, 2.7, 1.6)
        .fill(hex("4472C4"))
        .text("PLAN\n\nDefine goals\nand strategy");
    let do_box = rounded_rect(4.9, 1.75, 2.7, 1.6)
        .fill(hex("ED7D31"))
        .text("DO\n\nImplement\nthe plan");
    let check = rounded_rect(4.9, 3.6, 2.7, 1.6)
        .fill(hex("70AD47"))
        .text("CHECK\n\nMeasure\nresults");
    let act = rounded_rect(1.6, 3.6, 2.7, 1.6)
        .fill(hex("FFC000"))
        .text("ACT\n\nAdjust and\nimprove");

    // Arrows between quadrants
    let arr1 = shapes::arrow_right(4.5, 2.3, 0.3, 0.3).fill(hex("A5A5A5"));
    let arr2 = shapes::arrow_down(6.1, 3.5, 0.3, 0.2).fill(hex("A5A5A5"));
    let arr3 = shapes::arrow_left(4.5, 4.2, 0.3, 0.3).fill(hex("A5A5A5"));
    let arr4 = shapes::arrow_up(2.8, 3.5, 0.3, 0.2).fill(hex("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 = shapes::dim(
        ShapeType::Trapezoid,
        Dimension::Inches(0.5),
        Dimension::Inches(4.4),
        Dimension::Inches(8.7),
        Dimension::Inches(0.7),
    )
    .fill(hex("C00000"))
    .text("Physiological Needs - Food, Water, Shelter");
    let level4 = shapes::dim(
        ShapeType::Trapezoid,
        Dimension::Inches(1.1),
        Dimension::Inches(3.7),
        Dimension::Inches(7.7),
        Dimension::Inches(0.7),
    )
    .fill(hex("ED7D31"))
    .text("Safety Needs - Security, Stability");
    let level3 = shapes::dim(
        ShapeType::Trapezoid,
        Dimension::Inches(1.6),
        Dimension::Inches(3.1),
        Dimension::Inches(6.6),
        Dimension::Inches(0.7),
    )
    .fill(hex("FFC000"))
    .text("Love & Belonging - Relationships");
    let level2 = shapes::dim(
        ShapeType::Trapezoid,
        Dimension::Inches(2.2),
        Dimension::Inches(2.4),
        Dimension::Inches(5.5),
        Dimension::Inches(0.7),
    )
    .fill(hex("70AD47"))
    .text("Esteem - Achievement, Respect");
    let level1 = triangle(2.7, 1.6, 4.4, 0.8)
        .fill(hex("4472C4"))
        .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 = circle(1.6, 2.0, 3.3).fill(hex("4472C4")).text("Skills");
    let circle2 = circle(3.8, 2.0, 3.3).fill(hex("ED7D31")).text("Passion");
    let circle3 = circle(2.7, 3.5, 3.3)
        .fill(hex("70AD47"))
        .text("Market Need");

    // Center label
    let center = ellipse(3.5, 3.1, 1.75, 0.9)
        .fill(hex("FFFFFF"))
        .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 - using Dimension API)
    // =========================================================================
    println!("🔷 Slide 19: Dashboard with KPIs (Dimension API)");

    // KPI boxes using ratio-based positioning — automatically adapts to any slide size
    let kpi1 = shapes::dim(
        ShapeType::RoundedRectangle,
        Dimension::percent(3.0),
        Dimension::percent(23.0),
        Dimension::percent(22.0),
        Dimension::percent(18.0),
    )
    .fill(hex("4472C4"))
    .text("Revenue\n\n$2.14M\n+15% YoY");

    let kpi2 = shapes::dim(
        ShapeType::RoundedRectangle,
        Dimension::percent(27.0),
        Dimension::percent(23.0),
        Dimension::percent(22.0),
        Dimension::percent(18.0),
    )
    .fill(hex("70AD47"))
    .text("Customers\n\n12,450\n+22% YoY");

    let kpi3 = shapes::dim(
        ShapeType::RoundedRectangle,
        Dimension::percent(51.0),
        Dimension::percent(23.0),
        Dimension::percent(22.0),
        Dimension::percent(18.0),
    )
    .fill(hex("ED7D31"))
    .text("NPS Score\n\n72\n+8 pts");

    let kpi4 = shapes::dim(
        ShapeType::RoundedRectangle,
        Dimension::percent(75.0),
        Dimension::percent(23.0),
        Dimension::percent(22.0),
        Dimension::percent(18.0),
    )
    .fill(hex("5B9BD5"))
    .text("Retention\n\n94%\n+3% YoY");

    // Status indicators using mixed units: percent for X, inches for size
    let status1 = shapes::dim(
        ShapeType::Ellipse,
        Dimension::percent(14.0),
        Dimension::percent(42.0),
        Dimension::Inches(0.3),
        Dimension::Inches(0.3),
    )
    .fill(hex("70AD47"));
    let status2 = shapes::dim(
        ShapeType::Ellipse,
        Dimension::percent(38.0),
        Dimension::percent(42.0),
        Dimension::Inches(0.3),
        Dimension::Inches(0.3),
    )
    .fill(hex("70AD47"));
    let status3 = shapes::dim(
        ShapeType::Ellipse,
        Dimension::percent(62.0),
        Dimension::percent(42.0),
        Dimension::Inches(0.3),
        Dimension::Inches(0.3),
    )
    .fill(hex("FFC000"));
    let status4 = shapes::dim(
        ShapeType::Ellipse,
        Dimension::percent(86.0),
        Dimension::percent(42.0),
        Dimension::Inches(0.3),
        Dimension::Inches(0.3),
    )
    .fill(hex("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 = rect(0.5, 1.75, 2.0, 0.9)
        .fill(hex(themes::CORPORATE.primary))
        .text("Corporate");

    let modern_shape = rect(2.7, 1.75, 2.0, 0.9)
        .fill(hex(themes::MODERN.primary))
        .text("Modern");

    let vibrant_shape = rect(4.9, 1.75, 2.0, 0.9)
        .fill(hex(themes::VIBRANT.primary))
        .text("Vibrant");

    let dark_shape = rect(7.1, 1.75, 2.0, 0.9)
        .fill(hex(themes::DARK.primary))
        .text("Dark");

    let nature_shape = rect(0.5, 3.0, 2.0, 0.9)
        .fill(hex(themes::NATURE.primary))
        .text("Nature");

    let tech_shape = rect(2.7, 3.0, 2.0, 0.9)
        .fill(hex(themes::TECH.primary))
        .text("Tech");

    let carbon_shape = rect(4.9, 3.0, 2.0, 0.9)
        .fill(hex(themes::CARBON.primary))
        .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 = rect(0.5, 1.75, 1.3, 0.7)
        .fill(hex(colors::MATERIAL_RED))
        .text("M-Red");

    let material_blue = rect(2.1, 1.75, 1.3, 0.7)
        .fill(hex(colors::MATERIAL_BLUE))
        .text("M-Blue");

    let material_green = rect(3.6, 1.75, 1.3, 0.7)
        .fill(hex(colors::MATERIAL_GREEN))
        .text("M-Green");

    let material_orange = rect(5.1, 1.75, 1.3, 0.7)
        .fill(hex(colors::MATERIAL_ORANGE))
        .text("M-Orange");

    let material_purple = rect(6.7, 1.75, 1.3, 0.7)
        .fill(hex(colors::MATERIAL_PURPLE))
        .text("M-Purple");

    // Carbon Design colors
    let carbon_blue = rect(0.5, 2.7, 1.3, 0.7)
        .fill(hex(colors::CARBON_BLUE_60))
        .text("C-Blue");

    let carbon_green = rect(2.1, 2.7, 1.3, 0.7)
        .fill(hex(colors::CARBON_GREEN_50))
        .text("C-Green");

    let carbon_red = rect(3.6, 2.7, 1.3, 0.7)
        .fill(hex(colors::CARBON_RED_60))
        .text("C-Red");

    let carbon_purple = rect(5.1, 2.7, 1.3, 0.7)
        .fill(hex(colors::CARBON_PURPLE_60))
        .text("C-Purple");

    let carbon_gray = rect(6.7, 2.7, 1.3, 0.7)
        .fill(hex(colors::CARBON_GRAY_100))
        .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 = rounded_rect(0.3, 4.6, 2.7, 0.7)
        .fill(hex("4472C4"))
        .text("Speaker: Full control");
    let icon_kiosk = rounded_rect(3.4, 4.6, 2.7, 0.7)
        .fill(hex("ED7D31"))
        .text("Kiosk: Auto-loop");
    let icon_browsed = rounded_rect(6.5, 4.6, 2.7, 0.7)
        .fill(hex("70AD47"))
        .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 = rect(0.3, 1.6, 4.6, 0.3)
        .fill(hex("E7E6E6"))
        .text("Q1 2025 Strategy Review");
    // Row 1
    let s1 = rect(0.4, 2.2, 2.0, 1.2)
        .stroke(hex("999999"), 1.0)
        .text("Slide 1");
    let s2 = rect(2.7, 2.2, 2.0, 1.2)
        .stroke(hex("999999"), 1.0)
        .text("Slide 2");
    // Row 2
    let s3 = rect(0.4, 3.5, 2.0, 1.2)
        .stroke(hex("999999"), 1.0)
        .text("Slide 3");
    let s4 = rect(2.7, 3.5, 2.0, 1.2)
        .stroke(hex("999999"), 1.0)
        .text("Slide 4");
    // Row 3
    let s5 = rect(0.4, 4.8, 2.0, 1.2)
        .stroke(hex("999999"), 1.0)
        .text("Slide 5");
    let s6 = rect(2.7, 4.8, 2.0, 1.2)
        .stroke(hex("999999"), 1.0)
        .text("Slide 6");
    let ftr = rect(0.3, 6.1, 4.6, 0.3)
        .fill(hex("E7E6E6"))
        .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 = rounded_rect(0.3, 4.8, 2.2, 0.4)
        .fill(hex("4472C4"))
        .text("Anchor (gridSpan/rowSpan)");
    let legend_hmerge = rounded_rect(2.7, 4.8, 2.2, 0.4)
        .fill(hex("ED7D31"))
        .text("hMerge (col covered)");
    let legend_vmerge = rounded_rect(5.1, 4.8, 2.2, 0.4)
        .fill(hex("70AD47"))
        .text("vMerge (row covered)");
    let legend_normal = rounded_rect(7.5, 4.8, 2.2, 0.4)
        .fill(hex("A5A5A5"))
        .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");

    println!("   ├── (Animation/SmartArt/3D/VBA/CustomXml/EmbeddedFont/Handout removed in lean refactor)");

    // -------------------------------------------------------------------------
    // 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()
    );

    println!("   ├── Theme + Master + Layout Integration:");
    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:                                          ║");
    println!("║    ✓ Table borders/alignment  ✓ Merged cells                 ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  DIMENSION API (NEW):                                        ║");
    println!("║    ✓ EMU / Inches / Cm / Pt / Ratio / Percent units          ║");
    println!("║    ✓ from_dimensions() constructor                           ║");
    println!("║    ✓ Fluent .at() and .with_dimensions() chaining            ║");
    println!("║    ✓ Mixed-unit positioning (e.g. inches + percent)          ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!(
        "║  Output: comprehensive_demo.pptx ({} slides, {} KB)         ║",
        slides.len(),
        pptx_data.len() / 1024
    );
    println!("╚══════════════════════════════════════════════════════════════╝");

    Ok(())
}

pub fn from_hex(hex: &str) -> Option<Self>

Parse from hex string (e.g., “FF0000” or “#FF0000”)

Examples found in repository

examples/comprehensive_demo.rs (line 2143)

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 = rect(0.5, 1.75, 2.2, 1.1)
        .fill(hex("4F81BD"))
        .text("Rectangle");

    let ellipse_shape = ellipse(3.3, 1.75, 2.2, 1.1)
        .fill(hex("9BBB59"))
        .text("Ellipse");

    let rounded = rounded_rect(6.0, 1.75, 2.2, 1.1)
        .fill(hex("C0504D"))
        .text("Rounded");

    let triangle_shape = triangle(1.6, 3.3, 1.6, 1.3)
        .fill(hex("8064A2"))
        .text("Triangle");

    let diamond_shape = diamond(4.4, 3.3, 1.6, 1.3)
        .fill(hex("F79646"))
        .text("Diamond");

    slides.push(
        SlideContent::new("Shape Types with Color Fills")
            .add_shape(rect_shape)
            .add_shape(ellipse_shape)
            .add_shape(rounded)
            .add_shape(triangle_shape)
            .add_shape(diamond_shape)
            .title_color("1F497D"),
    );

    // =========================================================================
    // SLIDE 10: Gradient Fills (NEW)
    // =========================================================================
    println!("🌈 Slide 10: Gradient Fills");

    // Horizontal gradient
    let gradient_h = rect(0.5, 1.75, 2.7, 1.3)
        .with_gradient(GradientFill::linear(
            "1565C0",
            "42A5F5",
            GradientDirection::Horizontal,
        ))
        .text("Horizontal");

    // Vertical gradient
    let gradient_v = rect(3.5, 1.75, 2.7, 1.3)
        .with_gradient(GradientFill::linear(
            "2E7D32",
            "81C784",
            GradientDirection::Vertical,
        ))
        .text("Vertical");

    // Diagonal gradient
    let gradient_d = rounded_rect(6.5, 1.75, 2.7, 1.3)
        .with_gradient(GradientFill::linear(
            "C62828",
            "EF9A9A",
            GradientDirection::DiagonalDown,
        ))
        .text("Diagonal");

    // Three-color gradient
    let gradient_3 = ellipse(2.0, 3.5, 2.7, 1.3)
        .with_gradient(GradientFill::three_color(
            "FF6F00",
            "FFC107",
            "FFEB3B",
            GradientDirection::Horizontal,
        ))
        .text("3-Color");

    // Custom angle gradient
    let gradient_angle = rounded_rect(5.2, 3.5, 2.7, 1.3)
        .with_gradient(GradientFill::linear(
            "7B1FA2",
            "E1BEE7",
            GradientDirection::Angle(135),
        ))
        .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 = rect(1.1, 2.0, 3.3, 2.2)
        .fill(hex("1565C0"))
        .text("Base (100%)");

    // 25% transparent overlay
    let trans_25 = rect(2.2, 2.4, 2.7, 1.6)
        .fill(ColorValue::from_hex("F44336").transparent(25).to_color())
        .stroke(hex("B71C1C"), 2.0)
        .text("25% Transparent");

    // 50% transparent overlay
    let trans_50 = ellipse(4.9, 2.0, 2.7, 2.2)
        .fill(ColorValue::from_hex("4CAF50").transparent(50).to_color())
        .stroke(hex("1B5E20"), 2.0)
        .text("50% Transparent");

    // 75% transparent overlay
    let trans_75 = rounded_rect(6.0, 2.7, 2.7, 1.6)
        .fill(ColorValue::from_hex("FF9800").transparent(75).to_color())
        .stroke(hex("E65100"), 2.0)
        .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 = rounded_rect(0.5, 2.0, 2.0, 0.9)
        .with_id(100)
        .fill(hex("1565C0"))
        .text("Start");

    let box2 = rounded_rect(3.8, 2.0, 2.0, 0.9)
        .with_id(101)
        .fill(hex("2E7D32"))
        .text("Process");

    let box3 = rounded_rect(7.1, 2.0, 2.0, 0.9)
        .with_id(102)
        .fill(hex("C62828"))
        .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 = ellipse(1.1, 3.5, 1.6, 0.9)
        .with_id(103)
        .fill(hex("7B1FA2"))
        .text("A");

    let box5 = ellipse(4.4, 3.5, 1.6, 0.9)
        .with_id(104)
        .fill(hex("00838F"))
        .text("B");

    let box6 = ellipse(7.7, 3.5, 1.6, 0.9)
        .with_id(105)
        .fill(hex("EF6C00"))
        .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 with Shadow Effects
    // =========================================================================
    println!("🖼️  Slide 13: Images with Shadow Effects");

    // Dynamically load optimized stock photos from assets folder
    let assets_dir = "examples/assets";
    let mut stock_photos: Vec<(Vec<u8>, String, String)> = Vec::new();

    // Scan for optimized image files in assets folder
    if let Ok(entries) = std::fs::read_dir(assets_dir) {
        let mut files: Vec<_> = entries.flatten().collect();
        files.sort_by_key(|e| e.file_name());

        for entry in files {
            if let Some(filename) = entry.file_name().to_str() {
                // Skip text files
                if filename.ends_with(".txt") {
                    continue;
                }

                if let Ok(path) = entry.path().canonicalize() {
                    if let Some(ext) = path.extension() {
                        let ext_str = ext.to_string_lossy().to_lowercase();
                        if ext_str == "jpg" || ext_str == "jpeg" || ext_str == "png" {
                            if let Ok(bytes) = std::fs::read(&path) {
                                let format = if ext_str == "png" { "PNG" } else { "JPEG" };
                                let size_kb = bytes.len() as f64 / 1024.0;
                                stock_photos.push((
                                    bytes,
                                    format.to_string(),
                                    filename.to_string(),
                                ));
                                println!("   Loaded: {} ({:.1} KB)", filename, size_kb);
                            }
                        }
                    }
                }
            }
        }
    }

    // Use first 3 photos, or repeat if fewer available
    if stock_photos.is_empty() {
        panic!("No stock photos found in examples/assets/");
    }
    let photo_count = stock_photos.len();
    let photo1 = &stock_photos[0 % photo_count];
    let photo2 = &stock_photos[1 % photo_count];
    let photo3 = &stock_photos[2 % photo_count];

    // SLIDE 13: Shadow Effects
    let img1_shadow = ImageBuilder::auto(photo1.0.clone())
        .size(inches(2.2), inches(2.2))
        .at(inches(0.5), inches(1.6))
        .shadow()
        .build();
    let img2_shadow = ImageBuilder::auto(photo2.0.clone())
        .size(inches(2.7), inches(2.0))
        .at(inches(3.5), inches(1.6))
        .shadow()
        .build();
    let img3_shadow = ImageBuilder::auto(photo3.0.clone())
        .size(inches(2.5), inches(2.0))
        .at(inches(6.8), inches(1.6))
        .shadow()
        .build();

    slides.push(
        SlideContent::new("Image Effects: Shadow (Outer Shadow)")
            .add_image(img1_shadow)
            .add_image(img2_shadow)
            .add_image(img3_shadow)
            .title_color("1F497D"),
    );

    // =========================================================================
    // SLIDE 14: Images with Reflection Effects
    // =========================================================================
    println!("🖼️  Slide 14: Images with Reflection Effects");

    let img1_reflection = ImageBuilder::auto(photo1.0.clone())
        .size(inches(2.4), inches(2.4))
        .at(inches(0.9), inches(1.3))
        .reflection()
        .build();
    let img2_reflection = ImageBuilder::auto(photo2.0.clone())
        .size(inches(3.1), inches(2.2))
        .at(inches(3.8), inches(1.3))
        .reflection()
        .build();
    let img3_reflection = ImageBuilder::auto(photo3.0.clone())
        .size(inches(2.6), inches(2.2))
        .at(inches(7.1), inches(1.3))
        .reflection()
        .build();

    slides.push(
        SlideContent::new("Image Effects: Reflection (Mirror Effect)")
            .add_image(img1_reflection)
            .add_image(img2_reflection)
            .add_image(img3_reflection)
            .title_color("2E75B5"),
    );

    // =========================================================================
    // SLIDE 15: Images with Cropping
    // =========================================================================
    println!("🖼️  Slide 15: Images with Cropping");

    let img1_crop = ImageBuilder::auto(photo1.0.clone())
        .size(inches(2.0), inches(2.0))
        .at(inches(1.3), inches(2.0))
        .crop(0.1, 0.1, 0.1, 0.1)
        .build();
    let img2_crop = ImageBuilder::auto(photo2.0.clone())
        .size(inches(3.8), inches(1.6))
        .at(inches(3.8), inches(2.0))
        .crop(0.0, 0.2, 0.0, 0.2)
        .build();
    let img3_crop = ImageBuilder::auto(photo3.0.clone())
        .size(inches(2.2), inches(2.2))
        .at(inches(7.9), inches(2.0))
        .crop(0.15, 0.0, 0.15, 0.0)
        .build();

    slides.push(
        SlideContent::new("Image Cropping: All Sides, Top/Bottom, Left/Right")
            .add_image(img1_crop)
            .add_image(img2_crop)
            .add_image(img3_crop)
            .title_color("70AD47"),
    );

    // =========================================================================
    // SLIDE 16: Images with Glow Effects
    // =========================================================================
    println!("🖼️  Slide 16: Images with Glow Effects");

    let img1_glow = ImageBuilder::auto(photo1.0.clone())
        .size(inches(2.4), inches(2.4))
        .at(inches(1.0), inches(1.5))
        .glow()
        .build();
    let img2_glow = ImageBuilder::auto(photo2.0.clone())
        .size(inches(2.9), inches(2.1))
        .at(inches(4.0), inches(1.5))
        .glow()
        .build();
    let img3_glow = ImageBuilder::auto(photo3.0.clone())
        .size(inches(2.5), inches(2.1))
        .at(inches(7.2), inches(1.5))
        .glow()
        .build();

    slides.push(
        SlideContent::new("Image Effects: Glow (Golden Aura)")
            .add_image(img1_glow)
            .add_image(img2_glow)
            .add_image(img3_glow)
            .title_color("C55A11"),
    );

    // =========================================================================
    // SLIDE 17: Images with Soft Edges
    // =========================================================================
    println!("🖼️  Slide 17: Images with Soft Edges");

    let img1_soft = ImageBuilder::auto(photo1.0.clone())
        .size(inches(2.4), inches(2.4))
        .at(inches(1.0), inches(1.5))
        .soft_edges()
        .build();
    let img2_soft = ImageBuilder::auto(photo2.0.clone())
        .size(inches(2.9), inches(2.1))
        .at(inches(4.0), inches(1.5))
        .soft_edges()
        .build();
    let img3_soft = ImageBuilder::auto(photo3.0.clone())
        .size(inches(2.5), inches(2.1))
        .at(inches(7.2), inches(1.5))
        .soft_edges()
        .build();

    slides.push(
        SlideContent::new("Image Effects: Soft Edges (Feathered)")
            .add_image(img1_soft)
            .add_image(img2_soft)
            .add_image(img3_soft)
            .title_color("9B59B6"),
    );

    // =========================================================================
    // SLIDE 18: Images with Inner Shadow
    // =========================================================================
    println!("🖼️  Slide 18: Images with Inner Shadow");

    let img1_inner = ImageBuilder::auto(photo1.0.clone())
        .size(inches(2.4), inches(2.4))
        .at(inches(1.0), inches(1.5))
        .inner_shadow()
        .build();
    let img2_inner = ImageBuilder::auto(photo2.0.clone())
        .size(inches(2.9), inches(2.1))
        .at(inches(4.0), inches(1.5))
        .inner_shadow()
        .build();
    let img3_inner = ImageBuilder::auto(photo3.0.clone())
        .size(inches(2.5), inches(2.1))
        .at(inches(7.2), inches(1.5))
        .inner_shadow()
        .build();

    slides.push(
        SlideContent::new("Image Effects: Inner Shadow (Depth)")
            .add_image(img1_inner)
            .add_image(img2_inner)
            .add_image(img3_inner)
            .title_color("E74C3C"),
    );

    // =========================================================================
    // SLIDE 19: Images with Blur Effect
    // =========================================================================
    println!("🖼️  Slide 19: Images with Blur Effect");

    let img1_blur = ImageBuilder::auto(photo1.0.clone())
        .size(inches(2.4), inches(2.4))
        .at(inches(1.0), inches(1.5))
        .blur()
        .build();
    let img2_blur = ImageBuilder::auto(photo2.0.clone())
        .size(inches(2.9), inches(2.1))
        .at(inches(4.0), inches(1.5))
        .blur()
        .build();
    let img3_blur = ImageBuilder::auto(photo3.0.clone())
        .size(inches(2.5), inches(2.1))
        .at(inches(7.2), inches(1.5))
        .blur()
        .build();

    slides.push(
        SlideContent::new("Image Effects: Blur (Artistic)")
            .add_image(img1_blur)
            .add_image(img2_blur)
            .add_image(img3_blur)
            .title_color("3498DB"),
    );

    // =========================================================================
    // SLIDE 20: Images with Combined Effects
    // =========================================================================
    println!("🖼️  Slide 20: Images with Combined Effects");

    let img1_combined = ImageBuilder::auto(photo1.0.clone())
        .size(inches(2.4), inches(2.4))
        .at(inches(1.0), inches(1.5))
        .shadow()
        .reflection()
        .build();
    let img2_combined = ImageBuilder::auto(photo2.0.clone())
        .size(inches(2.9), inches(2.1))
        .at(inches(4.0), inches(1.5))
        .shadow()
        .reflection()
        .build();
    let img3_combined = ImageBuilder::auto(photo3.0.clone())
        .size(inches(2.5), inches(2.1))
        .at(inches(7.2), inches(1.5))
        .shadow()
        .reflection()
        .build();

    slides.push(
        SlideContent::new("Combined Effects: Shadow + Reflection")
            .add_image(img1_combined)
            .add_image(img2_combined)
            .add_image(img3_combined)
            .title_color("16A085"),
    );

    // =========================================================================
    // 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 = rounded_rect(0.3, 2.2, 1.5, 0.9)
        .fill(hex("4472C4"))
        .text("1. Research");
    let arrow1 = shapes::arrow_right(2.0, 2.4, 0.4, 0.4).fill(hex("A5A5A5"));
    let step2 = rounded_rect(2.5, 2.2, 1.5, 0.9)
        .fill(hex("ED7D31"))
        .text("2. Design");
    let arrow2 = shapes::arrow_right(4.2, 2.4, 0.4, 0.4).fill(hex("A5A5A5"));
    let step3 = rounded_rect(4.7, 2.2, 1.5, 0.9)
        .fill(hex("70AD47"))
        .text("3. Develop");
    let arrow3 = shapes::arrow_right(6.3, 2.4, 0.4, 0.4).fill(hex("A5A5A5"));
    let step4 = rounded_rect(6.9, 2.2, 1.5, 0.9)
        .fill(hex("5B9BD5"))
        .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 = rounded_rect(3.8, 1.5, 2.2, 0.7)
        .fill(hex("1F4E79"))
        .text("CEO");

    // Vertical line from CEO
    let line1 = rect(4.9, 2.2, 0.1, 0.4).fill(hex("A5A5A5"));

    // Horizontal connector
    let hline = rect(2.1, 2.6, 5.6, 0.05).fill(hex("A5A5A5"));

    // CTO, CFO, COO
    let cto = rounded_rect(1.1, 2.8, 2.0, 0.5)
        .fill(hex("2E75B6"))
        .text("CTO");
    let cfo = rounded_rect(3.9, 2.8, 2.0, 0.5)
        .fill(hex("2E75B6"))
        .text("CFO");
    let coo = rounded_rect(6.8, 2.8, 2.0, 0.5)
        .fill(hex("2E75B6"))
        .text("COO");

    // Vertical lines to departments
    let vline1 = rect(2.0, 2.7, 0.05, 0.16).fill(hex("A5A5A5"));
    let vline2 = rect(4.9, 2.7, 0.05, 0.16).fill(hex("A5A5A5"));
    let vline3 = rect(7.7, 2.7, 0.05, 0.16).fill(hex("A5A5A5"));

    // Teams under CTO
    let eng = rect(0.5, 3.6, 1.3, 0.4)
        .fill(hex("BDD7EE"))
        .text("Engineering");
    let product = rect(2.0, 3.6, 1.3, 0.4).fill(hex("BDD7EE")).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 = rounded_rect(1.6, 1.75, 2.7, 1.6)
        .fill(hex("4472C4"))
        .text("PLAN\n\nDefine goals\nand strategy");
    let do_box = rounded_rect(4.9, 1.75, 2.7, 1.6)
        .fill(hex("ED7D31"))
        .text("DO\n\nImplement\nthe plan");
    let check = rounded_rect(4.9, 3.6, 2.7, 1.6)
        .fill(hex("70AD47"))
        .text("CHECK\n\nMeasure\nresults");
    let act = rounded_rect(1.6, 3.6, 2.7, 1.6)
        .fill(hex("FFC000"))
        .text("ACT\n\nAdjust and\nimprove");

    // Arrows between quadrants
    let arr1 = shapes::arrow_right(4.5, 2.3, 0.3, 0.3).fill(hex("A5A5A5"));
    let arr2 = shapes::arrow_down(6.1, 3.5, 0.3, 0.2).fill(hex("A5A5A5"));
    let arr3 = shapes::arrow_left(4.5, 4.2, 0.3, 0.3).fill(hex("A5A5A5"));
    let arr4 = shapes::arrow_up(2.8, 3.5, 0.3, 0.2).fill(hex("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 = shapes::dim(
        ShapeType::Trapezoid,
        Dimension::Inches(0.5),
        Dimension::Inches(4.4),
        Dimension::Inches(8.7),
        Dimension::Inches(0.7),
    )
    .fill(hex("C00000"))
    .text("Physiological Needs - Food, Water, Shelter");
    let level4 = shapes::dim(
        ShapeType::Trapezoid,
        Dimension::Inches(1.1),
        Dimension::Inches(3.7),
        Dimension::Inches(7.7),
        Dimension::Inches(0.7),
    )
    .fill(hex("ED7D31"))
    .text("Safety Needs - Security, Stability");
    let level3 = shapes::dim(
        ShapeType::Trapezoid,
        Dimension::Inches(1.6),
        Dimension::Inches(3.1),
        Dimension::Inches(6.6),
        Dimension::Inches(0.7),
    )
    .fill(hex("FFC000"))
    .text("Love & Belonging - Relationships");
    let level2 = shapes::dim(
        ShapeType::Trapezoid,
        Dimension::Inches(2.2),
        Dimension::Inches(2.4),
        Dimension::Inches(5.5),
        Dimension::Inches(0.7),
    )
    .fill(hex("70AD47"))
    .text("Esteem - Achievement, Respect");
    let level1 = triangle(2.7, 1.6, 4.4, 0.8)
        .fill(hex("4472C4"))
        .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 = circle(1.6, 2.0, 3.3).fill(hex("4472C4")).text("Skills");
    let circle2 = circle(3.8, 2.0, 3.3).fill(hex("ED7D31")).text("Passion");
    let circle3 = circle(2.7, 3.5, 3.3)
        .fill(hex("70AD47"))
        .text("Market Need");

    // Center label
    let center = ellipse(3.5, 3.1, 1.75, 0.9)
        .fill(hex("FFFFFF"))
        .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 - using Dimension API)
    // =========================================================================
    println!("🔷 Slide 19: Dashboard with KPIs (Dimension API)");

    // KPI boxes using ratio-based positioning — automatically adapts to any slide size
    let kpi1 = shapes::dim(
        ShapeType::RoundedRectangle,
        Dimension::percent(3.0),
        Dimension::percent(23.0),
        Dimension::percent(22.0),
        Dimension::percent(18.0),
    )
    .fill(hex("4472C4"))
    .text("Revenue\n\n$2.14M\n+15% YoY");

    let kpi2 = shapes::dim(
        ShapeType::RoundedRectangle,
        Dimension::percent(27.0),
        Dimension::percent(23.0),
        Dimension::percent(22.0),
        Dimension::percent(18.0),
    )
    .fill(hex("70AD47"))
    .text("Customers\n\n12,450\n+22% YoY");

    let kpi3 = shapes::dim(
        ShapeType::RoundedRectangle,
        Dimension::percent(51.0),
        Dimension::percent(23.0),
        Dimension::percent(22.0),
        Dimension::percent(18.0),
    )
    .fill(hex("ED7D31"))
    .text("NPS Score\n\n72\n+8 pts");

    let kpi4 = shapes::dim(
        ShapeType::RoundedRectangle,
        Dimension::percent(75.0),
        Dimension::percent(23.0),
        Dimension::percent(22.0),
        Dimension::percent(18.0),
    )
    .fill(hex("5B9BD5"))
    .text("Retention\n\n94%\n+3% YoY");

    // Status indicators using mixed units: percent for X, inches for size
    let status1 = shapes::dim(
        ShapeType::Ellipse,
        Dimension::percent(14.0),
        Dimension::percent(42.0),
        Dimension::Inches(0.3),
        Dimension::Inches(0.3),
    )
    .fill(hex("70AD47"));
    let status2 = shapes::dim(
        ShapeType::Ellipse,
        Dimension::percent(38.0),
        Dimension::percent(42.0),
        Dimension::Inches(0.3),
        Dimension::Inches(0.3),
    )
    .fill(hex("70AD47"));
    let status3 = shapes::dim(
        ShapeType::Ellipse,
        Dimension::percent(62.0),
        Dimension::percent(42.0),
        Dimension::Inches(0.3),
        Dimension::Inches(0.3),
    )
    .fill(hex("FFC000"));
    let status4 = shapes::dim(
        ShapeType::Ellipse,
        Dimension::percent(86.0),
        Dimension::percent(42.0),
        Dimension::Inches(0.3),
        Dimension::Inches(0.3),
    )
    .fill(hex("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 = rect(0.5, 1.75, 2.0, 0.9)
        .fill(hex(themes::CORPORATE.primary))
        .text("Corporate");

    let modern_shape = rect(2.7, 1.75, 2.0, 0.9)
        .fill(hex(themes::MODERN.primary))
        .text("Modern");

    let vibrant_shape = rect(4.9, 1.75, 2.0, 0.9)
        .fill(hex(themes::VIBRANT.primary))
        .text("Vibrant");

    let dark_shape = rect(7.1, 1.75, 2.0, 0.9)
        .fill(hex(themes::DARK.primary))
        .text("Dark");

    let nature_shape = rect(0.5, 3.0, 2.0, 0.9)
        .fill(hex(themes::NATURE.primary))
        .text("Nature");

    let tech_shape = rect(2.7, 3.0, 2.0, 0.9)
        .fill(hex(themes::TECH.primary))
        .text("Tech");

    let carbon_shape = rect(4.9, 3.0, 2.0, 0.9)
        .fill(hex(themes::CARBON.primary))
        .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 = rect(0.5, 1.75, 1.3, 0.7)
        .fill(hex(colors::MATERIAL_RED))
        .text("M-Red");

    let material_blue = rect(2.1, 1.75, 1.3, 0.7)
        .fill(hex(colors::MATERIAL_BLUE))
        .text("M-Blue");

    let material_green = rect(3.6, 1.75, 1.3, 0.7)
        .fill(hex(colors::MATERIAL_GREEN))
        .text("M-Green");

    let material_orange = rect(5.1, 1.75, 1.3, 0.7)
        .fill(hex(colors::MATERIAL_ORANGE))
        .text("M-Orange");

    let material_purple = rect(6.7, 1.75, 1.3, 0.7)
        .fill(hex(colors::MATERIAL_PURPLE))
        .text("M-Purple");

    // Carbon Design colors
    let carbon_blue = rect(0.5, 2.7, 1.3, 0.7)
        .fill(hex(colors::CARBON_BLUE_60))
        .text("C-Blue");

    let carbon_green = rect(2.1, 2.7, 1.3, 0.7)
        .fill(hex(colors::CARBON_GREEN_50))
        .text("C-Green");

    let carbon_red = rect(3.6, 2.7, 1.3, 0.7)
        .fill(hex(colors::CARBON_RED_60))
        .text("C-Red");

    let carbon_purple = rect(5.1, 2.7, 1.3, 0.7)
        .fill(hex(colors::CARBON_PURPLE_60))
        .text("C-Purple");

    let carbon_gray = rect(6.7, 2.7, 1.3, 0.7)
        .fill(hex(colors::CARBON_GRAY_100))
        .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 = rounded_rect(0.3, 4.6, 2.7, 0.7)
        .fill(hex("4472C4"))
        .text("Speaker: Full control");
    let icon_kiosk = rounded_rect(3.4, 4.6, 2.7, 0.7)
        .fill(hex("ED7D31"))
        .text("Kiosk: Auto-loop");
    let icon_browsed = rounded_rect(6.5, 4.6, 2.7, 0.7)
        .fill(hex("70AD47"))
        .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 = rect(0.3, 1.6, 4.6, 0.3)
        .fill(hex("E7E6E6"))
        .text("Q1 2025 Strategy Review");
    // Row 1
    let s1 = rect(0.4, 2.2, 2.0, 1.2)
        .stroke(hex("999999"), 1.0)
        .text("Slide 1");
    let s2 = rect(2.7, 2.2, 2.0, 1.2)
        .stroke(hex("999999"), 1.0)
        .text("Slide 2");
    // Row 2
    let s3 = rect(0.4, 3.5, 2.0, 1.2)
        .stroke(hex("999999"), 1.0)
        .text("Slide 3");
    let s4 = rect(2.7, 3.5, 2.0, 1.2)
        .stroke(hex("999999"), 1.0)
        .text("Slide 4");
    // Row 3
    let s5 = rect(0.4, 4.8, 2.0, 1.2)
        .stroke(hex("999999"), 1.0)
        .text("Slide 5");
    let s6 = rect(2.7, 4.8, 2.0, 1.2)
        .stroke(hex("999999"), 1.0)
        .text("Slide 6");
    let ftr = rect(0.3, 6.1, 4.6, 0.3)
        .fill(hex("E7E6E6"))
        .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 = rounded_rect(0.3, 4.8, 2.2, 0.4)
        .fill(hex("4472C4"))
        .text("Anchor (gridSpan/rowSpan)");
    let legend_hmerge = rounded_rect(2.7, 4.8, 2.2, 0.4)
        .fill(hex("ED7D31"))
        .text("hMerge (col covered)");
    let legend_vmerge = rounded_rect(5.1, 4.8, 2.2, 0.4)
        .fill(hex("70AD47"))
        .text("vMerge (row covered)");
    let legend_normal = rounded_rect(7.5, 4.8, 2.2, 0.4)
        .fill(hex("A5A5A5"))
        .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");

    println!("   ├── (Animation/SmartArt/3D/VBA/CustomXml/EmbeddedFont/Handout removed in lean refactor)");

    // -------------------------------------------------------------------------
    // 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()
    );

    println!("   ├── Theme + Master + Layout Integration:");
    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:                                          ║");
    println!("║    ✓ Table borders/alignment  ✓ Merged cells                 ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  DIMENSION API (NEW):                                        ║");
    println!("║    ✓ EMU / Inches / Cm / Pt / Ratio / Percent units          ║");
    println!("║    ✓ from_dimensions() constructor                           ║");
    println!("║    ✓ Fluent .at() and .with_dimensions() chaining            ║");
    println!("║    ✓ Mixed-unit positioning (e.g. inches + percent)          ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!(
        "║  Output: comprehensive_demo.pptx ({} slides, {} KB)         ║",
        slides.len(),
        pptx_data.len() / 1024
    );
    println!("╚══════════════════════════════════════════════════════════════╝");

    Ok(())
}

pub fn to_hex(&self) -> String

Convert to hex string (uppercase, no #)

Examples found in repository

examples/comprehensive_demo.rs (line 2146)

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 = rect(0.5, 1.75, 2.2, 1.1)
        .fill(hex("4F81BD"))
        .text("Rectangle");

    let ellipse_shape = ellipse(3.3, 1.75, 2.2, 1.1)
        .fill(hex("9BBB59"))
        .text("Ellipse");

    let rounded = rounded_rect(6.0, 1.75, 2.2, 1.1)
        .fill(hex("C0504D"))
        .text("Rounded");

    let triangle_shape = triangle(1.6, 3.3, 1.6, 1.3)
        .fill(hex("8064A2"))
        .text("Triangle");

    let diamond_shape = diamond(4.4, 3.3, 1.6, 1.3)
        .fill(hex("F79646"))
        .text("Diamond");

    slides.push(
        SlideContent::new("Shape Types with Color Fills")
            .add_shape(rect_shape)
            .add_shape(ellipse_shape)
            .add_shape(rounded)
            .add_shape(triangle_shape)
            .add_shape(diamond_shape)
            .title_color("1F497D"),
    );

    // =========================================================================
    // SLIDE 10: Gradient Fills (NEW)
    // =========================================================================
    println!("🌈 Slide 10: Gradient Fills");

    // Horizontal gradient
    let gradient_h = rect(0.5, 1.75, 2.7, 1.3)
        .with_gradient(GradientFill::linear(
            "1565C0",
            "42A5F5",
            GradientDirection::Horizontal,
        ))
        .text("Horizontal");

    // Vertical gradient
    let gradient_v = rect(3.5, 1.75, 2.7, 1.3)
        .with_gradient(GradientFill::linear(
            "2E7D32",
            "81C784",
            GradientDirection::Vertical,
        ))
        .text("Vertical");

    // Diagonal gradient
    let gradient_d = rounded_rect(6.5, 1.75, 2.7, 1.3)
        .with_gradient(GradientFill::linear(
            "C62828",
            "EF9A9A",
            GradientDirection::DiagonalDown,
        ))
        .text("Diagonal");

    // Three-color gradient
    let gradient_3 = ellipse(2.0, 3.5, 2.7, 1.3)
        .with_gradient(GradientFill::three_color(
            "FF6F00",
            "FFC107",
            "FFEB3B",
            GradientDirection::Horizontal,
        ))
        .text("3-Color");

    // Custom angle gradient
    let gradient_angle = rounded_rect(5.2, 3.5, 2.7, 1.3)
        .with_gradient(GradientFill::linear(
            "7B1FA2",
            "E1BEE7",
            GradientDirection::Angle(135),
        ))
        .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 = rect(1.1, 2.0, 3.3, 2.2)
        .fill(hex("1565C0"))
        .text("Base (100%)");

    // 25% transparent overlay
    let trans_25 = rect(2.2, 2.4, 2.7, 1.6)
        .fill(ColorValue::from_hex("F44336").transparent(25).to_color())
        .stroke(hex("B71C1C"), 2.0)
        .text("25% Transparent");

    // 50% transparent overlay
    let trans_50 = ellipse(4.9, 2.0, 2.7, 2.2)
        .fill(ColorValue::from_hex("4CAF50").transparent(50).to_color())
        .stroke(hex("1B5E20"), 2.0)
        .text("50% Transparent");

    // 75% transparent overlay
    let trans_75 = rounded_rect(6.0, 2.7, 2.7, 1.6)
        .fill(ColorValue::from_hex("FF9800").transparent(75).to_color())
        .stroke(hex("E65100"), 2.0)
        .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 = rounded_rect(0.5, 2.0, 2.0, 0.9)
        .with_id(100)
        .fill(hex("1565C0"))
        .text("Start");

    let box2 = rounded_rect(3.8, 2.0, 2.0, 0.9)
        .with_id(101)
        .fill(hex("2E7D32"))
        .text("Process");

    let box3 = rounded_rect(7.1, 2.0, 2.0, 0.9)
        .with_id(102)
        .fill(hex("C62828"))
        .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 = ellipse(1.1, 3.5, 1.6, 0.9)
        .with_id(103)
        .fill(hex("7B1FA2"))
        .text("A");

    let box5 = ellipse(4.4, 3.5, 1.6, 0.9)
        .with_id(104)
        .fill(hex("00838F"))
        .text("B");

    let box6 = ellipse(7.7, 3.5, 1.6, 0.9)
        .with_id(105)
        .fill(hex("EF6C00"))
        .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 with Shadow Effects
    // =========================================================================
    println!("🖼️  Slide 13: Images with Shadow Effects");

    // Dynamically load optimized stock photos from assets folder
    let assets_dir = "examples/assets";
    let mut stock_photos: Vec<(Vec<u8>, String, String)> = Vec::new();

    // Scan for optimized image files in assets folder
    if let Ok(entries) = std::fs::read_dir(assets_dir) {
        let mut files: Vec<_> = entries.flatten().collect();
        files.sort_by_key(|e| e.file_name());

        for entry in files {
            if let Some(filename) = entry.file_name().to_str() {
                // Skip text files
                if filename.ends_with(".txt") {
                    continue;
                }

                if let Ok(path) = entry.path().canonicalize() {
                    if let Some(ext) = path.extension() {
                        let ext_str = ext.to_string_lossy().to_lowercase();
                        if ext_str == "jpg" || ext_str == "jpeg" || ext_str == "png" {
                            if let Ok(bytes) = std::fs::read(&path) {
                                let format = if ext_str == "png" { "PNG" } else { "JPEG" };
                                let size_kb = bytes.len() as f64 / 1024.0;
                                stock_photos.push((
                                    bytes,
                                    format.to_string(),
                                    filename.to_string(),
                                ));
                                println!("   Loaded: {} ({:.1} KB)", filename, size_kb);
                            }
                        }
                    }
                }
            }
        }
    }

    // Use first 3 photos, or repeat if fewer available
    if stock_photos.is_empty() {
        panic!("No stock photos found in examples/assets/");
    }
    let photo_count = stock_photos.len();
    let photo1 = &stock_photos[0 % photo_count];
    let photo2 = &stock_photos[1 % photo_count];
    let photo3 = &stock_photos[2 % photo_count];

    // SLIDE 13: Shadow Effects
    let img1_shadow = ImageBuilder::auto(photo1.0.clone())
        .size(inches(2.2), inches(2.2))
        .at(inches(0.5), inches(1.6))
        .shadow()
        .build();
    let img2_shadow = ImageBuilder::auto(photo2.0.clone())
        .size(inches(2.7), inches(2.0))
        .at(inches(3.5), inches(1.6))
        .shadow()
        .build();
    let img3_shadow = ImageBuilder::auto(photo3.0.clone())
        .size(inches(2.5), inches(2.0))
        .at(inches(6.8), inches(1.6))
        .shadow()
        .build();

    slides.push(
        SlideContent::new("Image Effects: Shadow (Outer Shadow)")
            .add_image(img1_shadow)
            .add_image(img2_shadow)
            .add_image(img3_shadow)
            .title_color("1F497D"),
    );

    // =========================================================================
    // SLIDE 14: Images with Reflection Effects
    // =========================================================================
    println!("🖼️  Slide 14: Images with Reflection Effects");

    let img1_reflection = ImageBuilder::auto(photo1.0.clone())
        .size(inches(2.4), inches(2.4))
        .at(inches(0.9), inches(1.3))
        .reflection()
        .build();
    let img2_reflection = ImageBuilder::auto(photo2.0.clone())
        .size(inches(3.1), inches(2.2))
        .at(inches(3.8), inches(1.3))
        .reflection()
        .build();
    let img3_reflection = ImageBuilder::auto(photo3.0.clone())
        .size(inches(2.6), inches(2.2))
        .at(inches(7.1), inches(1.3))
        .reflection()
        .build();

    slides.push(
        SlideContent::new("Image Effects: Reflection (Mirror Effect)")
            .add_image(img1_reflection)
            .add_image(img2_reflection)
            .add_image(img3_reflection)
            .title_color("2E75B5"),
    );

    // =========================================================================
    // SLIDE 15: Images with Cropping
    // =========================================================================
    println!("🖼️  Slide 15: Images with Cropping");

    let img1_crop = ImageBuilder::auto(photo1.0.clone())
        .size(inches(2.0), inches(2.0))
        .at(inches(1.3), inches(2.0))
        .crop(0.1, 0.1, 0.1, 0.1)
        .build();
    let img2_crop = ImageBuilder::auto(photo2.0.clone())
        .size(inches(3.8), inches(1.6))
        .at(inches(3.8), inches(2.0))
        .crop(0.0, 0.2, 0.0, 0.2)
        .build();
    let img3_crop = ImageBuilder::auto(photo3.0.clone())
        .size(inches(2.2), inches(2.2))
        .at(inches(7.9), inches(2.0))
        .crop(0.15, 0.0, 0.15, 0.0)
        .build();

    slides.push(
        SlideContent::new("Image Cropping: All Sides, Top/Bottom, Left/Right")
            .add_image(img1_crop)
            .add_image(img2_crop)
            .add_image(img3_crop)
            .title_color("70AD47"),
    );

    // =========================================================================
    // SLIDE 16: Images with Glow Effects
    // =========================================================================
    println!("🖼️  Slide 16: Images with Glow Effects");

    let img1_glow = ImageBuilder::auto(photo1.0.clone())
        .size(inches(2.4), inches(2.4))
        .at(inches(1.0), inches(1.5))
        .glow()
        .build();
    let img2_glow = ImageBuilder::auto(photo2.0.clone())
        .size(inches(2.9), inches(2.1))
        .at(inches(4.0), inches(1.5))
        .glow()
        .build();
    let img3_glow = ImageBuilder::auto(photo3.0.clone())
        .size(inches(2.5), inches(2.1))
        .at(inches(7.2), inches(1.5))
        .glow()
        .build();

    slides.push(
        SlideContent::new("Image Effects: Glow (Golden Aura)")
            .add_image(img1_glow)
            .add_image(img2_glow)
            .add_image(img3_glow)
            .title_color("C55A11"),
    );

    // =========================================================================
    // SLIDE 17: Images with Soft Edges
    // =========================================================================
    println!("🖼️  Slide 17: Images with Soft Edges");

    let img1_soft = ImageBuilder::auto(photo1.0.clone())
        .size(inches(2.4), inches(2.4))
        .at(inches(1.0), inches(1.5))
        .soft_edges()
        .build();
    let img2_soft = ImageBuilder::auto(photo2.0.clone())
        .size(inches(2.9), inches(2.1))
        .at(inches(4.0), inches(1.5))
        .soft_edges()
        .build();
    let img3_soft = ImageBuilder::auto(photo3.0.clone())
        .size(inches(2.5), inches(2.1))
        .at(inches(7.2), inches(1.5))
        .soft_edges()
        .build();

    slides.push(
        SlideContent::new("Image Effects: Soft Edges (Feathered)")
            .add_image(img1_soft)
            .add_image(img2_soft)
            .add_image(img3_soft)
            .title_color("9B59B6"),
    );

    // =========================================================================
    // SLIDE 18: Images with Inner Shadow
    // =========================================================================
    println!("🖼️  Slide 18: Images with Inner Shadow");

    let img1_inner = ImageBuilder::auto(photo1.0.clone())
        .size(inches(2.4), inches(2.4))
        .at(inches(1.0), inches(1.5))
        .inner_shadow()
        .build();
    let img2_inner = ImageBuilder::auto(photo2.0.clone())
        .size(inches(2.9), inches(2.1))
        .at(inches(4.0), inches(1.5))
        .inner_shadow()
        .build();
    let img3_inner = ImageBuilder::auto(photo3.0.clone())
        .size(inches(2.5), inches(2.1))
        .at(inches(7.2), inches(1.5))
        .inner_shadow()
        .build();

    slides.push(
        SlideContent::new("Image Effects: Inner Shadow (Depth)")
            .add_image(img1_inner)
            .add_image(img2_inner)
            .add_image(img3_inner)
            .title_color("E74C3C"),
    );

    // =========================================================================
    // SLIDE 19: Images with Blur Effect
    // =========================================================================
    println!("🖼️  Slide 19: Images with Blur Effect");

    let img1_blur = ImageBuilder::auto(photo1.0.clone())
        .size(inches(2.4), inches(2.4))
        .at(inches(1.0), inches(1.5))
        .blur()
        .build();
    let img2_blur = ImageBuilder::auto(photo2.0.clone())
        .size(inches(2.9), inches(2.1))
        .at(inches(4.0), inches(1.5))
        .blur()
        .build();
    let img3_blur = ImageBuilder::auto(photo3.0.clone())
        .size(inches(2.5), inches(2.1))
        .at(inches(7.2), inches(1.5))
        .blur()
        .build();

    slides.push(
        SlideContent::new("Image Effects: Blur (Artistic)")
            .add_image(img1_blur)
            .add_image(img2_blur)
            .add_image(img3_blur)
            .title_color("3498DB"),
    );

    // =========================================================================
    // SLIDE 20: Images with Combined Effects
    // =========================================================================
    println!("🖼️  Slide 20: Images with Combined Effects");

    let img1_combined = ImageBuilder::auto(photo1.0.clone())
        .size(inches(2.4), inches(2.4))
        .at(inches(1.0), inches(1.5))
        .shadow()
        .reflection()
        .build();
    let img2_combined = ImageBuilder::auto(photo2.0.clone())
        .size(inches(2.9), inches(2.1))
        .at(inches(4.0), inches(1.5))
        .shadow()
        .reflection()
        .build();
    let img3_combined = ImageBuilder::auto(photo3.0.clone())
        .size(inches(2.5), inches(2.1))
        .at(inches(7.2), inches(1.5))
        .shadow()
        .reflection()
        .build();

    slides.push(
        SlideContent::new("Combined Effects: Shadow + Reflection")
            .add_image(img1_combined)
            .add_image(img2_combined)
            .add_image(img3_combined)
            .title_color("16A085"),
    );

    // =========================================================================
    // 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 = rounded_rect(0.3, 2.2, 1.5, 0.9)
        .fill(hex("4472C4"))
        .text("1. Research");
    let arrow1 = shapes::arrow_right(2.0, 2.4, 0.4, 0.4).fill(hex("A5A5A5"));
    let step2 = rounded_rect(2.5, 2.2, 1.5, 0.9)
        .fill(hex("ED7D31"))
        .text("2. Design");
    let arrow2 = shapes::arrow_right(4.2, 2.4, 0.4, 0.4).fill(hex("A5A5A5"));
    let step3 = rounded_rect(4.7, 2.2, 1.5, 0.9)
        .fill(hex("70AD47"))
        .text("3. Develop");
    let arrow3 = shapes::arrow_right(6.3, 2.4, 0.4, 0.4).fill(hex("A5A5A5"));
    let step4 = rounded_rect(6.9, 2.2, 1.5, 0.9)
        .fill(hex("5B9BD5"))
        .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 = rounded_rect(3.8, 1.5, 2.2, 0.7)
        .fill(hex("1F4E79"))
        .text("CEO");

    // Vertical line from CEO
    let line1 = rect(4.9, 2.2, 0.1, 0.4).fill(hex("A5A5A5"));

    // Horizontal connector
    let hline = rect(2.1, 2.6, 5.6, 0.05).fill(hex("A5A5A5"));

    // CTO, CFO, COO
    let cto = rounded_rect(1.1, 2.8, 2.0, 0.5)
        .fill(hex("2E75B6"))
        .text("CTO");
    let cfo = rounded_rect(3.9, 2.8, 2.0, 0.5)
        .fill(hex("2E75B6"))
        .text("CFO");
    let coo = rounded_rect(6.8, 2.8, 2.0, 0.5)
        .fill(hex("2E75B6"))
        .text("COO");

    // Vertical lines to departments
    let vline1 = rect(2.0, 2.7, 0.05, 0.16).fill(hex("A5A5A5"));
    let vline2 = rect(4.9, 2.7, 0.05, 0.16).fill(hex("A5A5A5"));
    let vline3 = rect(7.7, 2.7, 0.05, 0.16).fill(hex("A5A5A5"));

    // Teams under CTO
    let eng = rect(0.5, 3.6, 1.3, 0.4)
        .fill(hex("BDD7EE"))
        .text("Engineering");
    let product = rect(2.0, 3.6, 1.3, 0.4).fill(hex("BDD7EE")).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 = rounded_rect(1.6, 1.75, 2.7, 1.6)
        .fill(hex("4472C4"))
        .text("PLAN\n\nDefine goals\nand strategy");
    let do_box = rounded_rect(4.9, 1.75, 2.7, 1.6)
        .fill(hex("ED7D31"))
        .text("DO\n\nImplement\nthe plan");
    let check = rounded_rect(4.9, 3.6, 2.7, 1.6)
        .fill(hex("70AD47"))
        .text("CHECK\n\nMeasure\nresults");
    let act = rounded_rect(1.6, 3.6, 2.7, 1.6)
        .fill(hex("FFC000"))
        .text("ACT\n\nAdjust and\nimprove");

    // Arrows between quadrants
    let arr1 = shapes::arrow_right(4.5, 2.3, 0.3, 0.3).fill(hex("A5A5A5"));
    let arr2 = shapes::arrow_down(6.1, 3.5, 0.3, 0.2).fill(hex("A5A5A5"));
    let arr3 = shapes::arrow_left(4.5, 4.2, 0.3, 0.3).fill(hex("A5A5A5"));
    let arr4 = shapes::arrow_up(2.8, 3.5, 0.3, 0.2).fill(hex("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 = shapes::dim(
        ShapeType::Trapezoid,
        Dimension::Inches(0.5),
        Dimension::Inches(4.4),
        Dimension::Inches(8.7),
        Dimension::Inches(0.7),
    )
    .fill(hex("C00000"))
    .text("Physiological Needs - Food, Water, Shelter");
    let level4 = shapes::dim(
        ShapeType::Trapezoid,
        Dimension::Inches(1.1),
        Dimension::Inches(3.7),
        Dimension::Inches(7.7),
        Dimension::Inches(0.7),
    )
    .fill(hex("ED7D31"))
    .text("Safety Needs - Security, Stability");
    let level3 = shapes::dim(
        ShapeType::Trapezoid,
        Dimension::Inches(1.6),
        Dimension::Inches(3.1),
        Dimension::Inches(6.6),
        Dimension::Inches(0.7),
    )
    .fill(hex("FFC000"))
    .text("Love & Belonging - Relationships");
    let level2 = shapes::dim(
        ShapeType::Trapezoid,
        Dimension::Inches(2.2),
        Dimension::Inches(2.4),
        Dimension::Inches(5.5),
        Dimension::Inches(0.7),
    )
    .fill(hex("70AD47"))
    .text("Esteem - Achievement, Respect");
    let level1 = triangle(2.7, 1.6, 4.4, 0.8)
        .fill(hex("4472C4"))
        .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 = circle(1.6, 2.0, 3.3).fill(hex("4472C4")).text("Skills");
    let circle2 = circle(3.8, 2.0, 3.3).fill(hex("ED7D31")).text("Passion");
    let circle3 = circle(2.7, 3.5, 3.3)
        .fill(hex("70AD47"))
        .text("Market Need");

    // Center label
    let center = ellipse(3.5, 3.1, 1.75, 0.9)
        .fill(hex("FFFFFF"))
        .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 - using Dimension API)
    // =========================================================================
    println!("🔷 Slide 19: Dashboard with KPIs (Dimension API)");

    // KPI boxes using ratio-based positioning — automatically adapts to any slide size
    let kpi1 = shapes::dim(
        ShapeType::RoundedRectangle,
        Dimension::percent(3.0),
        Dimension::percent(23.0),
        Dimension::percent(22.0),
        Dimension::percent(18.0),
    )
    .fill(hex("4472C4"))
    .text("Revenue\n\n$2.14M\n+15% YoY");

    let kpi2 = shapes::dim(
        ShapeType::RoundedRectangle,
        Dimension::percent(27.0),
        Dimension::percent(23.0),
        Dimension::percent(22.0),
        Dimension::percent(18.0),
    )
    .fill(hex("70AD47"))
    .text("Customers\n\n12,450\n+22% YoY");

    let kpi3 = shapes::dim(
        ShapeType::RoundedRectangle,
        Dimension::percent(51.0),
        Dimension::percent(23.0),
        Dimension::percent(22.0),
        Dimension::percent(18.0),
    )
    .fill(hex("ED7D31"))
    .text("NPS Score\n\n72\n+8 pts");

    let kpi4 = shapes::dim(
        ShapeType::RoundedRectangle,
        Dimension::percent(75.0),
        Dimension::percent(23.0),
        Dimension::percent(22.0),
        Dimension::percent(18.0),
    )
    .fill(hex("5B9BD5"))
    .text("Retention\n\n94%\n+3% YoY");

    // Status indicators using mixed units: percent for X, inches for size
    let status1 = shapes::dim(
        ShapeType::Ellipse,
        Dimension::percent(14.0),
        Dimension::percent(42.0),
        Dimension::Inches(0.3),
        Dimension::Inches(0.3),
    )
    .fill(hex("70AD47"));
    let status2 = shapes::dim(
        ShapeType::Ellipse,
        Dimension::percent(38.0),
        Dimension::percent(42.0),
        Dimension::Inches(0.3),
        Dimension::Inches(0.3),
    )
    .fill(hex("70AD47"));
    let status3 = shapes::dim(
        ShapeType::Ellipse,
        Dimension::percent(62.0),
        Dimension::percent(42.0),
        Dimension::Inches(0.3),
        Dimension::Inches(0.3),
    )
    .fill(hex("FFC000"));
    let status4 = shapes::dim(
        ShapeType::Ellipse,
        Dimension::percent(86.0),
        Dimension::percent(42.0),
        Dimension::Inches(0.3),
        Dimension::Inches(0.3),
    )
    .fill(hex("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 = rect(0.5, 1.75, 2.0, 0.9)
        .fill(hex(themes::CORPORATE.primary))
        .text("Corporate");

    let modern_shape = rect(2.7, 1.75, 2.0, 0.9)
        .fill(hex(themes::MODERN.primary))
        .text("Modern");

    let vibrant_shape = rect(4.9, 1.75, 2.0, 0.9)
        .fill(hex(themes::VIBRANT.primary))
        .text("Vibrant");

    let dark_shape = rect(7.1, 1.75, 2.0, 0.9)
        .fill(hex(themes::DARK.primary))
        .text("Dark");

    let nature_shape = rect(0.5, 3.0, 2.0, 0.9)
        .fill(hex(themes::NATURE.primary))
        .text("Nature");

    let tech_shape = rect(2.7, 3.0, 2.0, 0.9)
        .fill(hex(themes::TECH.primary))
        .text("Tech");

    let carbon_shape = rect(4.9, 3.0, 2.0, 0.9)
        .fill(hex(themes::CARBON.primary))
        .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 = rect(0.5, 1.75, 1.3, 0.7)
        .fill(hex(colors::MATERIAL_RED))
        .text("M-Red");

    let material_blue = rect(2.1, 1.75, 1.3, 0.7)
        .fill(hex(colors::MATERIAL_BLUE))
        .text("M-Blue");

    let material_green = rect(3.6, 1.75, 1.3, 0.7)
        .fill(hex(colors::MATERIAL_GREEN))
        .text("M-Green");

    let material_orange = rect(5.1, 1.75, 1.3, 0.7)
        .fill(hex(colors::MATERIAL_ORANGE))
        .text("M-Orange");

    let material_purple = rect(6.7, 1.75, 1.3, 0.7)
        .fill(hex(colors::MATERIAL_PURPLE))
        .text("M-Purple");

    // Carbon Design colors
    let carbon_blue = rect(0.5, 2.7, 1.3, 0.7)
        .fill(hex(colors::CARBON_BLUE_60))
        .text("C-Blue");

    let carbon_green = rect(2.1, 2.7, 1.3, 0.7)
        .fill(hex(colors::CARBON_GREEN_50))
        .text("C-Green");

    let carbon_red = rect(3.6, 2.7, 1.3, 0.7)
        .fill(hex(colors::CARBON_RED_60))
        .text("C-Red");

    let carbon_purple = rect(5.1, 2.7, 1.3, 0.7)
        .fill(hex(colors::CARBON_PURPLE_60))
        .text("C-Purple");

    let carbon_gray = rect(6.7, 2.7, 1.3, 0.7)
        .fill(hex(colors::CARBON_GRAY_100))
        .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 = rounded_rect(0.3, 4.6, 2.7, 0.7)
        .fill(hex("4472C4"))
        .text("Speaker: Full control");
    let icon_kiosk = rounded_rect(3.4, 4.6, 2.7, 0.7)
        .fill(hex("ED7D31"))
        .text("Kiosk: Auto-loop");
    let icon_browsed = rounded_rect(6.5, 4.6, 2.7, 0.7)
        .fill(hex("70AD47"))
        .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 = rect(0.3, 1.6, 4.6, 0.3)
        .fill(hex("E7E6E6"))
        .text("Q1 2025 Strategy Review");
    // Row 1
    let s1 = rect(0.4, 2.2, 2.0, 1.2)
        .stroke(hex("999999"), 1.0)
        .text("Slide 1");
    let s2 = rect(2.7, 2.2, 2.0, 1.2)
        .stroke(hex("999999"), 1.0)
        .text("Slide 2");
    // Row 2
    let s3 = rect(0.4, 3.5, 2.0, 1.2)
        .stroke(hex("999999"), 1.0)
        .text("Slide 3");
    let s4 = rect(2.7, 3.5, 2.0, 1.2)
        .stroke(hex("999999"), 1.0)
        .text("Slide 4");
    // Row 3
    let s5 = rect(0.4, 4.8, 2.0, 1.2)
        .stroke(hex("999999"), 1.0)
        .text("Slide 5");
    let s6 = rect(2.7, 4.8, 2.0, 1.2)
        .stroke(hex("999999"), 1.0)
        .text("Slide 6");
    let ftr = rect(0.3, 6.1, 4.6, 0.3)
        .fill(hex("E7E6E6"))
        .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 = rounded_rect(0.3, 4.8, 2.2, 0.4)
        .fill(hex("4472C4"))
        .text("Anchor (gridSpan/rowSpan)");
    let legend_hmerge = rounded_rect(2.7, 4.8, 2.2, 0.4)
        .fill(hex("ED7D31"))
        .text("hMerge (col covered)");
    let legend_vmerge = rounded_rect(5.1, 4.8, 2.2, 0.4)
        .fill(hex("70AD47"))
        .text("vMerge (row covered)");
    let legend_normal = rounded_rect(7.5, 4.8, 2.2, 0.4)
        .fill(hex("A5A5A5"))
        .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");

    println!("   ├── (Animation/SmartArt/3D/VBA/CustomXml/EmbeddedFont/Handout removed in lean refactor)");

    // -------------------------------------------------------------------------
    // 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()
    );

    println!("   ├── Theme + Master + Layout Integration:");
    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:                                          ║");
    println!("║    ✓ Table borders/alignment  ✓ Merged cells                 ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!("║  DIMENSION API (NEW):                                        ║");
    println!("║    ✓ EMU / Inches / Cm / Pt / Ratio / Percent units          ║");
    println!("║    ✓ from_dimensions() constructor                           ║");
    println!("║    ✓ Fluent .at() and .with_dimensions() chaining            ║");
    println!("║    ✓ Mixed-unit positioning (e.g. inches + percent)          ║");
    println!("╠══════════════════════════════════════════════════════════════╣");
    println!(
        "║  Output: comprehensive_demo.pptx ({} slides, {} KB)         ║",
        slides.len(),
        pptx_data.len() / 1024
    );
    println!("╚══════════════════════════════════════════════════════════════╝");

    Ok(())
}

pub fn black() -> Self

Common colors

pub fn white() -> Self

pub fn red() -> Self

pub fn green() -> Self

pub fn blue() -> Self

Trait Implementations

impl Clone for RgbColor

fn clone(&self) -> RgbColor

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for RgbColor

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for RgbColor

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for RgbColor

fn eq(&self, other: &RgbColor) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl ToXml for RgbColor

fn to_xml(&self) -> String

Generate XML representation of this element

fn write_xml(&self, writer: &mut String)

Write XML to a string buffer (more efficient for large documents)

impl Eq for RgbColor

impl StructuralPartialEq for RgbColor