rdocx 0.1.2

//! Generates all sample documents, each exported to DOCX, PDF, HTML, and Markdown.
//!
//! Documents:
//! 1. feature_showcase — Updated to cover ALL library features
//! 2. proposal — Professional project proposal (Tensorbee)
//! 3. quote — Quote with bill of materials
//! 4. invoice — Professional invoice
//! 5. report — Hierarchical report with images
//! 6. letter — Formal business letter
//! 7. contract — Employment contract
//!
//! Run with: cargo run --example generate_all_samples

use std::collections::HashMap;
use std::fmt::Write as FmtWrite;
use std::path::Path;

use rdocx::{
    Alignment, BorderStyle, Document, Length, SectionBreak, StyleBuilder, TabAlignment, TabLeader,
    VerticalAlignment,
};

fn main() {
    let samples_dir = Path::new(env!("CARGO_MANIFEST_DIR"))
        .parent()
        .unwrap()
        .parent()
        .unwrap()
        .join("samples");
    std::fs::create_dir_all(&samples_dir).unwrap();

    println!(
        "Generating all sample documents in {}\n",
        samples_dir.display()
    );

    let generators: Vec<(&str, fn(&Path) -> Document)> = vec![
        ("feature_showcase", generate_feature_showcase),
        ("proposal", generate_proposal),
        ("quote", generate_quote),
        ("invoice", generate_invoice),
        ("report", generate_report),
        ("letter", generate_letter),
        ("contract", generate_contract),
    ];

    for (name, generator) in &generators {
        println!("--- {} ---", name);
        let doc = generator(&samples_dir);
        export_all(&samples_dir, name, doc);
        println!();
    }

    println!("All done!");
}

/// Export a document to DOCX, PDF, HTML, and Markdown.
fn export_all(dir: &Path, name: &str, mut doc: Document) {
    let docx_path = dir.join(format!("{name}.docx"));
    doc.save(&docx_path).unwrap();
    println!("  {name}.docx");

    match doc.to_pdf() {
        Ok(pdf) => {
            let pdf_path = dir.join(format!("{name}.pdf"));
            std::fs::write(&pdf_path, &pdf).unwrap();
            println!("  {name}.pdf ({} bytes)", pdf.len());
        }
        Err(e) => println!("  {name}.pdf — skipped: {e}"),
    }

    let html = doc.to_html();
    let html_path = dir.join(format!("{name}.html"));
    std::fs::write(&html_path, &html).unwrap();
    println!("  {name}.html ({} bytes)", html.len());

    let md = doc.to_markdown();
    let md_path = dir.join(format!("{name}.md"));
    std::fs::write(&md_path, &md).unwrap();
    println!("  {name}.md ({} bytes)", md.len());
}

// =============================================================================
// 1. FEATURE SHOWCASE — Updated to cover ALL library features
// =============================================================================
fn generate_feature_showcase(_samples_dir: &Path) -> Document {
    let mut doc = Document::new();

    // ── Page Setup & Metadata ──
    doc.set_page_size(Length::inches(8.5), Length::inches(11.0));
    doc.set_margins(
        Length::inches(1.0),
        Length::inches(1.0),
        Length::inches(1.0),
        Length::inches(1.0),
    );
    doc.set_header_footer_distance(Length::twips(720), Length::twips(432));
    doc.set_gutter(Length::twips(0));
    doc.set_title("rdocx Feature Showcase");
    doc.set_author("rdocx Sample Generator");
    doc.set_subject("Comprehensive feature demonstration");
    doc.set_keywords("rdocx, docx, rust, sample, showcase");

    // Headers & Footers with different first page
    doc.set_different_first_page(true);
    doc.set_first_page_header("rdocx");
    doc.set_first_page_footer("Feature Showcase — Cover Page");
    doc.set_header("rdocx Feature Showcase");
    doc.set_footer("Generated by rdocx");

    // ── COVER PAGE ──
    let bg = create_sample_png(612, 792, [20, 45, 90]);
    doc.add_background_image(&bg, "cover_bg.png");

    for _ in 0..3 {
        doc.add_paragraph("");
    }
    {
        let mut p = doc.add_paragraph("").alignment(Alignment::Center);
        p.add_run("rdocx").bold(true).size(72.0).color("FFFFFF");
    }
    {
        let mut p = doc.add_paragraph("").alignment(Alignment::Center);
        p.add_run("Complete Feature Showcase")
            .size(28.0)
            .color("FFFFFF")
            .italic(true);
    }
    doc.add_paragraph("");
    {
        let mut p = doc.add_paragraph("").alignment(Alignment::Center);
        p.add_run("Every feature of the rdocx Rust library")
            .size(13.0)
            .color("B0C4DE");
    }
    {
        let mut p = doc.add_paragraph("").alignment(Alignment::Center);
        p.add_run("demonstrated in a single document.")
            .size(13.0)
            .color("B0C4DE");
    }

    // ── TABLE OF CONTENTS ──
    doc.add_paragraph("").page_break_before(true);
    doc.insert_toc(doc.content_count(), 3);

    // ── SECTION 1: TEXT FORMATTING ──
    doc.add_paragraph("").page_break_before(true);
    doc.add_paragraph("1. Text Formatting").style("Heading1");

    // Paragraph Alignment
    doc.add_paragraph("1.1 Paragraph Alignment")
        .style("Heading2");
    doc.add_paragraph("Left-aligned paragraph (default).")
        .alignment(Alignment::Left);
    doc.add_paragraph("Center-aligned paragraph.")
        .alignment(Alignment::Center);
    doc.add_paragraph("Right-aligned paragraph.")
        .alignment(Alignment::Right);
    doc.add_paragraph(
        "Justified paragraph — this text is long enough to demonstrate how justified alignment \
         distributes extra space across word gaps so lines fill the full width of the text area.",
    )
    .alignment(Alignment::Justify);

    doc.add_paragraph("");

    // Run Formatting
    doc.add_paragraph("1.2 Run Formatting").style("Heading2");
    {
        let mut p = doc.add_paragraph("");
        p.add_run("Bold").bold(true);
        p.add_run(" | ");
        p.add_run("Italic").italic(true);
        p.add_run(" | ");
        p.add_run("Bold Italic").bold(true).italic(true);
        p.add_run(" | ");
        p.add_run("Underline").underline(true);
        p.add_run(" | ");
        p.add_run("Strikethrough").strike(true);
        p.add_run(" | ");
        p.add_run("Double Strike").double_strike(true);
    }
    {
        let mut p = doc.add_paragraph("");
        p.add_run("Red").color("FF0000");
        p.add_run(" | ");
        p.add_run("Blue").color("0000FF");
        p.add_run(" | ");
        p.add_run("Green").color("00AA00");
        p.add_run(" | ");
        p.add_run("Highlighted").highlight("FFFF00");
    }
    {
        let mut p = doc.add_paragraph("");
        p.add_run("8pt").size(8.0);
        p.add_run(" | ");
        p.add_run("11pt").size(11.0);
        p.add_run(" | ");
        p.add_run("16pt").size(16.0);
        p.add_run(" | ");
        p.add_run("24pt").size(24.0);
    }
    {
        let mut p = doc.add_paragraph("");
        p.add_run("Arial").font("Arial");
        p.add_run(" | ");
        p.add_run("Times New Roman").font("Times New Roman");
        p.add_run(" | ");
        p.add_run("Courier New").font("Courier New");
    }
    {
        let mut p = doc.add_paragraph("");
        p.add_run("H");
        p.add_run("2").subscript();
        p.add_run("O (subscript) | E=mc");
        p.add_run("2").superscript();
        p.add_run(" (superscript)");
    }
    {
        let mut p = doc.add_paragraph("");
        p.add_run("ALL CAPS").all_caps(true);
        p.add_run(" | ");
        p.add_run("Small Caps").small_caps(true);
        p.add_run(" | ");
        p.add_run("Expanded").character_spacing(Length::twips(40));
        p.add_run(" | ");
        p.add_run("Hidden text (not visible)").hidden(true);
    }

    doc.add_paragraph("");

    // Underline Styles
    doc.add_paragraph("1.3 Underline Styles").style("Heading2");
    {
        let mut p = doc.add_paragraph("");
        p.add_run("Single ")
            .underline_style(rdocx::UnderlineStyle::Single);
        p.add_run("Double ")
            .underline_style(rdocx::UnderlineStyle::Double);
        p.add_run("Thick ")
            .underline_style(rdocx::UnderlineStyle::Thick);
        p.add_run("Dotted ")
            .underline_style(rdocx::UnderlineStyle::Dotted);
        p.add_run("Dash ")
            .underline_style(rdocx::UnderlineStyle::Dash);
        p.add_run("Wave ")
            .underline_style(rdocx::UnderlineStyle::Wave);
    }

    // ── SECTION 2: PARAGRAPH FORMATTING ──
    doc.add_paragraph("").page_break_before(true);
    doc.add_paragraph("2. Paragraph Formatting")
        .style("Heading1");

    doc.add_paragraph("2.1 Shading & Borders").style("Heading2");
    doc.add_paragraph("Paragraph with light green shading")
        .shading("E2EFDA");
    doc.add_paragraph("Paragraph with bottom border")
        .border_bottom(BorderStyle::Single, 6, "2E75B6");
    doc.add_paragraph("Paragraph with all borders (red)")
        .border_all(BorderStyle::Single, 4, "FF0000");

    doc.add_paragraph("2.2 Indentation").style("Heading2");
    doc.add_paragraph("1-inch left indent + 0.5-inch hanging indent")
        .indent_left(Length::inches(1.0))
        .hanging_indent(Length::inches(0.5));
    doc.add_paragraph("0.5-inch first-line indent on this paragraph")
        .first_line_indent(Length::inches(0.5));
    doc.add_paragraph("Both left and right indent (0.75 inches each)")
        .indent_left(Length::inches(0.75))
        .indent_right(Length::inches(0.75));

    doc.add_paragraph("2.3 Spacing & Line Height")
        .style("Heading2");
    doc.add_paragraph("Extra space before (24pt) and after (12pt)")
        .space_before(Length::pt(24.0))
        .space_after(Length::pt(12.0));
    doc.add_paragraph(
        "Double line spacing paragraph. This text should have extra vertical space between \
         lines to demonstrate line_spacing_multiple(2.0).",
    )
    .line_spacing_multiple(2.0);
    doc.add_paragraph("Exact 20pt line spacing (fixed height).")
        .line_spacing(20.0);

    doc.add_paragraph("2.4 Pagination Controls")
        .style("Heading2");
    doc.add_paragraph("keep_with_next — this paragraph stays with the next")
        .keep_with_next(true);
    doc.add_paragraph("(This paragraph was kept with the one above.)");
    doc.add_paragraph("keep_together — all lines of this paragraph stay on the same page")
        .keep_together(true);
    doc.add_paragraph("widow_control — prevents widow/orphan lines")
        .widow_control(true);

    // ── SECTION 3: LISTS ──
    doc.add_paragraph("").page_break_before(true);
    doc.add_paragraph("3. Lists").style("Heading1");

    doc.add_paragraph("3.1 Bullet Lists").style("Heading2");
    doc.add_bullet_list_item("First item", 0);
    doc.add_bullet_list_item("Second item", 0);
    doc.add_bullet_list_item("Nested level 1", 1);
    doc.add_bullet_list_item("Nested level 2", 2);
    doc.add_bullet_list_item("Back to level 1", 1);
    doc.add_bullet_list_item("Third item", 0);

    doc.add_paragraph("");

    doc.add_paragraph("3.2 Numbered Lists").style("Heading2");
    doc.add_numbered_list_item("First numbered item", 0);
    doc.add_numbered_list_item("Second numbered item", 0);
    doc.add_numbered_list_item("Sub-item A", 1);
    doc.add_numbered_list_item("Sub-item B", 1);
    doc.add_numbered_list_item("Third numbered item", 0);

    // ── SECTION 4: TAB STOPS ──
    doc.add_paragraph("");
    doc.add_paragraph("4. Tab Stops").style("Heading1");

    doc.add_paragraph("4.1 Alignment Tabs").style("Heading2");
    doc.add_paragraph("Left\tCenter\tRight\tDecimal")
        .add_tab_stop(TabAlignment::Left, Length::inches(0.0))
        .add_tab_stop(TabAlignment::Center, Length::inches(2.5))
        .add_tab_stop(TabAlignment::Right, Length::inches(5.0))
        .add_tab_stop(TabAlignment::Decimal, Length::inches(6.5));

    doc.add_paragraph("4.2 Tab Leaders").style("Heading2");
    doc.add_paragraph("Item\t\tPrice")
        .add_tab_stop_with_leader(TabAlignment::Left, Length::inches(0.0), TabLeader::None)
        .add_tab_stop_with_leader(TabAlignment::Right, Length::inches(4.0), TabLeader::Dot)
        .add_tab_stop_with_leader(TabAlignment::Right, Length::inches(5.0), TabLeader::None);
    doc.add_paragraph("Widget\t\t$19.99")
        .add_tab_stop_with_leader(TabAlignment::Left, Length::inches(0.0), TabLeader::None)
        .add_tab_stop_with_leader(TabAlignment::Right, Length::inches(4.0), TabLeader::Dot)
        .add_tab_stop_with_leader(TabAlignment::Right, Length::inches(5.0), TabLeader::None);
    doc.add_paragraph("Gadget\t\t$249.50")
        .add_tab_stop_with_leader(TabAlignment::Left, Length::inches(0.0), TabLeader::None)
        .add_tab_stop_with_leader(
            TabAlignment::Right,
            Length::inches(4.0),
            TabLeader::Underscore,
        )
        .add_tab_stop_with_leader(TabAlignment::Right, Length::inches(5.0), TabLeader::None);

    // ── SECTION 5: TABLES ──
    doc.add_paragraph("").page_break_before(true);
    doc.add_paragraph("5. Tables").style("Heading1");

    doc.add_paragraph("5.1 Basic Table").style("Heading2");
    {
        let mut tbl = doc
            .add_table(4, 3)
            .borders(BorderStyle::Single, 4, "000000");
        for col in 0..3 {
            tbl.cell(0, col).unwrap().shading("2E75B6");
        }
        tbl.cell(0, 0).unwrap().set_text("Name");
        tbl.cell(0, 1).unwrap().set_text("Role");
        tbl.cell(0, 2).unwrap().set_text("Location");
        tbl.cell(1, 0).unwrap().set_text("Walter White");
        tbl.cell(1, 1).unwrap().set_text("CEO");
        tbl.cell(1, 2).unwrap().set_text("Albuquerque");
        tbl.cell(2, 0).unwrap().set_text("Jesse Pinkman");
        tbl.cell(2, 1).unwrap().set_text("CTO");
        tbl.cell(2, 2).unwrap().set_text("Remote");
        tbl.cell(3, 0).unwrap().set_text("Hank Schrader");
        tbl.cell(3, 1).unwrap().set_text("Security");
        tbl.cell(3, 2).unwrap().set_text("Washington");
    }

    doc.add_paragraph("");

    doc.add_paragraph("5.2 Column Span & Cell Shading")
        .style("Heading2");
    {
        let mut tbl = doc
            .add_table(3, 4)
            .borders(BorderStyle::Single, 4, "000000")
            .width_pct(100.0);
        tbl.cell(0, 0).unwrap().set_text("Quarterly Report");
        tbl.cell(0, 0).unwrap().shading("1F4E79").grid_span(4);
        tbl.cell(1, 0).unwrap().set_text("Region");
        tbl.cell(1, 0).unwrap().shading("D6E4F0");
        tbl.cell(1, 1).unwrap().set_text("Q1");
        tbl.cell(1, 1).unwrap().shading("D6E4F0");
        tbl.cell(1, 2).unwrap().set_text("Q2");
        tbl.cell(1, 2).unwrap().shading("D6E4F0");
        tbl.cell(1, 3).unwrap().set_text("Total");
        tbl.cell(1, 3).unwrap().shading("D6E4F0");
        tbl.cell(2, 0).unwrap().set_text("Americas");
        tbl.cell(2, 1).unwrap().set_text("$2.4M");
        tbl.cell(2, 2).unwrap().set_text("$2.7M");
        tbl.cell(2, 3).unwrap().set_text("$5.1M");
    }

    doc.add_paragraph("");

    doc.add_paragraph("5.3 Vertical Merge").style("Heading2");
    {
        let mut tbl = doc
            .add_table(4, 3)
            .borders(BorderStyle::Single, 4, "000000");
        tbl.cell(0, 0).unwrap().set_text("Category");
        tbl.cell(0, 0).unwrap().shading("E2EFDA");
        tbl.cell(0, 1).unwrap().set_text("Item");
        tbl.cell(0, 1).unwrap().shading("E2EFDA");
        tbl.cell(0, 2).unwrap().set_text("Price");
        tbl.cell(0, 2).unwrap().shading("E2EFDA");
        tbl.cell(1, 0).unwrap().set_text("Hardware");
        tbl.cell(1, 0).unwrap().v_merge_restart();
        tbl.cell(1, 1).unwrap().set_text("Laptop");
        tbl.cell(1, 2).unwrap().set_text("$1,200");
        tbl.cell(2, 0).unwrap().v_merge_continue();
        tbl.cell(2, 1).unwrap().set_text("Monitor");
        tbl.cell(2, 2).unwrap().set_text("$450");
        tbl.cell(3, 0).unwrap().set_text("Software");
        tbl.cell(3, 1).unwrap().set_text("IDE License");
        tbl.cell(3, 2).unwrap().set_text("$200/yr");
    }

    doc.add_paragraph("");

    doc.add_paragraph("5.4 Nested Table").style("Heading2");
    {
        let mut tbl = doc
            .add_table(2, 2)
            .borders(BorderStyle::Single, 6, "2E75B6");
        tbl.cell(0, 0).unwrap().set_text("Outer (0,0)");
        tbl.cell(0, 1).unwrap().set_text("Outer (0,1)");
        tbl.cell(1, 0).unwrap().set_text("Outer (1,0)");
        {
            let mut cell = tbl.cell(1, 1).unwrap();
            cell.set_text("Nested table below:");
            let mut nested = cell
                .add_table(2, 2)
                .borders(BorderStyle::Single, 2, "FF6600");
            nested.cell(0, 0).unwrap().set_text("A");
            nested.cell(0, 1).unwrap().set_text("B");
            nested.cell(1, 0).unwrap().set_text("C");
            nested.cell(1, 1).unwrap().set_text("D");
        }
    }

    doc.add_paragraph("");

    doc.add_paragraph("5.5 Vertical Alignment & Row Properties")
        .style("Heading2");
    {
        let mut tbl = doc
            .add_table(2, 3)
            .borders(BorderStyle::Single, 4, "666666");
        tbl.row(0).unwrap().height(Length::pt(50.0)).header();
        tbl.cell(0, 0).unwrap().set_text("Top");
        tbl.cell(0, 0)
            .unwrap()
            .vertical_alignment(VerticalAlignment::Top)
            .shading("FFF2CC");
        tbl.cell(0, 1).unwrap().set_text("Center");
        tbl.cell(0, 1)
            .unwrap()
            .vertical_alignment(VerticalAlignment::Center)
            .shading("D9E2F3");
        tbl.cell(0, 2).unwrap().set_text("Bottom");
        tbl.cell(0, 2)
            .unwrap()
            .vertical_alignment(VerticalAlignment::Bottom)
            .shading("E2EFDA");
        tbl.row(1).unwrap().cant_split();
        tbl.cell(1, 0).unwrap().set_text("No-wrap cell");
        tbl.cell(1, 0).unwrap().no_wrap();
        tbl.cell(1, 1).unwrap().set_text("Fixed width");
        tbl.cell(1, 1).unwrap().width(Length::inches(2.0));
        tbl.cell(1, 2).unwrap().set_text("Normal");
    }

    // ── SECTION 6: IMAGES ──
    doc.add_paragraph("").page_break_before(true);
    doc.add_paragraph("6. Images").style("Heading1");

    doc.add_paragraph("6.1 Inline Image").style("Heading2");
    doc.add_paragraph("A blue gradient image below:");
    let img = create_sample_png(200, 50, [0, 80, 200]);
    doc.add_picture(&img, "chart.png", Length::inches(3.0), Length::inches(0.75));

    doc.add_paragraph("");
    doc.add_paragraph("6.2 Header Image").style("Heading2");
    let hdr_img = create_sample_png(400, 40, [40, 40, 40]);
    doc.set_header_image(
        &hdr_img,
        "header_logo.png",
        Length::inches(2.0),
        Length::inches(0.2),
    );
    doc.add_paragraph("The header now contains an inline image (check the top of this page).");

    doc.add_paragraph("");
    doc.add_paragraph("Note: Page 1 uses a full-page background image (add_background_image).");

    // ── SECTION 7: CONTENT MANIPULATION ──
    doc.add_paragraph("").page_break_before(true);
    doc.add_paragraph("7. Content Manipulation")
        .style("Heading1");

    doc.add_paragraph("7.1 Placeholder Replacement")
        .style("Heading2");
    doc.add_paragraph("Customer: {{customer}}");
    doc.add_paragraph("Date: {{date}}");
    doc.add_paragraph("Reference: {{ref_number}}");
    {
        let mut tbl = doc
            .add_table(2, 2)
            .borders(BorderStyle::Single, 4, "000000");
        tbl.cell(0, 0).unwrap().set_text("Project");
        tbl.cell(0, 0).unwrap().shading("D6E4F0");
        tbl.cell(0, 1).unwrap().set_text("{{project}}");
        tbl.cell(1, 0).unwrap().set_text("Status");
        tbl.cell(1, 0).unwrap().shading("D6E4F0");
        tbl.cell(1, 1).unwrap().set_text("{{status}}");
    }

    let mut replacements = HashMap::new();
    replacements.insert("{{customer}}", "Tensorbee Inc.");
    replacements.insert("{{date}}", "February 22, 2026");
    replacements.insert("{{ref_number}}", "TB-2026-001");
    replacements.insert("{{project}}", "Infrastructure Upgrade");
    replacements.insert("{{status}}", "In Progress");
    let n = doc.replace_all(&replacements);
    doc.add_paragraph(&format!("({n} placeholders replaced above)"));

    doc.add_paragraph("");

    doc.add_paragraph("7.2 Regex Replacement").style("Heading2");
    doc.add_paragraph("Emails: user1@example.com and admin@tensorbee.com");
    let _ = doc.replace_regex(r"\b\w+@\w+\.\w+\b", "[REDACTED]");
    doc.add_paragraph("(Email addresses above were redacted using regex replacement)");

    doc.add_paragraph("");

    doc.add_paragraph("7.3 Content Insertion").style("Heading2");
    doc.add_paragraph("Section A: First content.");
    doc.add_paragraph("Section C: Third content.");
    if let Some(idx) = doc.find_content_index("Section C") {
        doc.insert_paragraph(
            idx,
            "Section B: Inserted between A and C via find_content_index().",
        );
    }

    // ── SECTION 8: SECTION BREAKS & ORIENTATION ──
    doc.add_paragraph("").section_break(SectionBreak::NextPage);
    doc.add_paragraph("8. Section Breaks & Orientation")
        .style("Heading1");
    doc.add_paragraph("This page is LANDSCAPE. Useful for wide tables and charts.");

    {
        let mut tbl = doc
            .add_table(3, 7)
            .borders(BorderStyle::Single, 4, "2E75B6");
        let headers = ["Region", "Jan", "Feb", "Mar", "Apr", "May", "Total"];
        for (c, h) in headers.iter().enumerate() {
            tbl.cell(0, c).unwrap().set_text(h);
            tbl.cell(0, c).unwrap().shading("2E75B6");
        }
        let data = [
            [
                "Americas", "$1.2M", "$1.3M", "$1.4M", "$1.5M", "$1.6M", "$7.0M",
            ],
            [
                "Europe", "$0.8M", "$0.9M", "$0.9M", "$1.0M", "$1.1M", "$4.7M",
            ],
        ];
        for (r, row) in data.iter().enumerate() {
            for (c, v) in row.iter().enumerate() {
                tbl.cell(r + 1, c).unwrap().set_text(v);
            }
        }
    }

    doc.add_paragraph("")
        .section_break(SectionBreak::NextPage)
        .section_landscape();

    // ── SECTION 9: CUSTOM STYLES ──
    doc.add_paragraph("9. Custom Styles").style("Heading1");
    doc.add_style(
        StyleBuilder::paragraph("CustomHighlight", "Custom Highlight")
            .based_on("Normal")
            .paragraph_properties({
                let mut ppr = rdocx_oxml::properties::CT_PPr::default();
                ppr.shading = Some(rdocx_oxml::properties::CT_Shd {
                    val: "clear".to_string(),
                    color: None,
                    fill: Some("FFF2CC".to_string()),
                });
                ppr
            })
            .run_properties({
                let mut rpr = rdocx_oxml::properties::CT_RPr::default();
                rpr.bold = Some(true);
                rpr.color = Some("C45911".to_string());
                rpr
            }),
    );
    doc.add_paragraph("This paragraph uses a custom style: bold orange text on yellow background.")
        .style("CustomHighlight");

    doc.add_paragraph("");

    // ── SECTION 10: DOCUMENT INTELLIGENCE ──
    doc.add_paragraph("10. Document Intelligence API")
        .style("Heading1");

    let wc = doc.word_count();
    let hc = doc.headings().len();
    let ic = doc.images().len();
    let lc = doc.links().len();
    doc.add_paragraph(&format!("Word count: {wc}"));
    doc.add_paragraph(&format!("Heading count: {hc}"));
    doc.add_paragraph(&format!("Image count: {ic}"));
    doc.add_paragraph(&format!("Link count: {lc}"));

    let outline = doc.document_outline();
    doc.add_paragraph(&format!("Top-level outline nodes: {}", outline.len()));

    let issues = doc.audit_accessibility();
    doc.add_paragraph(&format!("Accessibility issues: {}", issues.len()));
    for issue in &issues {
        doc.add_bullet_list_item(&format!("{:?}: {}", issue.severity, issue.message), 0);
    }

    // ── SECTION 11: DOCUMENT MERGING ──
    doc.add_paragraph("");
    doc.add_paragraph("11. Document Merging").style("Heading1");
    {
        let mut other = Document::new();
        other.add_paragraph("This paragraph was merged from another document using append().");
        doc.append(&other);
    }

    doc.add_paragraph("");

    // ── SUMMARY ──
    doc.add_paragraph("Summary of Demonstrated Features")
        .style("Heading1");
    let features = [
        "Page setup: size, margins, header/footer distance, gutter",
        "Document metadata: title, author, subject, keywords",
        "Headers and footers: text, images, different first page",
        "Background images (full-page behind text)",
        "Table of Contents generation with bookmarks",
        "Text formatting: bold, italic, underline styles, strike, color, size, font",
        "Advanced run: superscript, subscript, caps, small caps, spacing, hidden",
        "Paragraph formatting: alignment, borders, shading, spacing, indentation",
        "Pagination controls: keep-with-next, keep-together, widow control",
        "Bullet and numbered lists with nesting",
        "Tab stops with dot/underscore/hyphen leaders",
        "Tables: borders, shading, column spans, row spans, vertical alignment, nested tables",
        "Row properties: header rows, exact height, cant-split",
        "Cell properties: width, no-wrap, vertical alignment",
        "Inline images and header images",
        "Placeholder replacement (single and batch)",
        "Regex-based find and replace",
        "Content insertion at specific positions",
        "Section breaks with mixed portrait/landscape",
        "Custom paragraph and character styles",
        "Document intelligence: word count, headings, outline, images, links",
        "Accessibility audit",
        "Document merging (append)",
        "Export: DOCX, PDF, HTML, Markdown",
    ];
    for f in &features {
        doc.add_bullet_list_item(f, 0);
    }
    doc.add_paragraph("");
    doc.add_paragraph("All features built entirely with the rdocx Rust crate.")
        .alignment(Alignment::Center)
        .shading("E2EFDA")
        .border_all(BorderStyle::Single, 2, "00AA00");

    doc
}

// =============================================================================
// 2. PROPOSAL DOCUMENT — Deep navy + gold scheme
// =============================================================================
fn generate_proposal(_samples_dir: &Path) -> Document {
    let mut doc = Document::new();

    // Colors: Navy #1B2A4A, Gold #C5922E, Light #F4F1EB
    doc.set_page_size(Length::inches(8.5), Length::inches(11.0));
    doc.set_margins(
        Length::inches(1.0),
        Length::inches(1.0),
        Length::inches(1.0),
        Length::inches(1.0),
    );
    doc.set_title("AI Platform Modernization Proposal");
    doc.set_author("Walter White");
    doc.set_subject("Technology Proposal");
    doc.set_keywords("proposal, AI, modernization, Tensorbee");

    // Banner header
    let logo_img = create_logo_png(220, 48);
    let banner = build_header_banner_xml(
        "rId1",
        &BannerOpts {
            bg_color: "1B2A4A",
            banner_width: 7772400,
            banner_height: 914400,
            logo_width: 2011680,
            logo_height: 438912,
            logo_x_offset: 295125,
            logo_y_offset: 237744,
        },
    );
    doc.set_raw_header_with_images(
        banner,
        &[("rId1", &logo_img, "logo.png")],
        rdocx_oxml::header_footer::HdrFtrType::Default,
    );
    doc.set_different_first_page(true);
    let cover_banner = build_header_banner_xml(
        "rId1",
        &BannerOpts {
            bg_color: "C5922E",
            banner_width: 7772400,
            banner_height: 914400,
            logo_width: 2011680,
            logo_height: 438912,
            logo_x_offset: 295125,
            logo_y_offset: 237744,
        },
    );
    doc.set_raw_header_with_images(
        cover_banner,
        &[("rId1", &logo_img, "logo.png")],
        rdocx_oxml::header_footer::HdrFtrType::First,
    );
    doc.set_margins(
        Length::twips(2292),
        Length::twips(1440),
        Length::twips(1440),
        Length::twips(1440),
    );
    doc.set_header_footer_distance(Length::twips(720), Length::twips(432));
    doc.set_footer("Tensorbee — Confidential");

    // Custom styles
    doc.add_style(
        StyleBuilder::paragraph("ProposalTitle", "Proposal Title")
            .based_on("Normal")
            .run_properties({
                let mut rpr = rdocx_oxml::properties::CT_RPr::default();
                rpr.bold = Some(true);
                rpr.font_ascii = Some("Georgia".to_string());
                rpr.font_hansi = Some("Georgia".to_string());
                rpr.sz = Some(rdocx_oxml::HalfPoint(56)); // half-points → 28pt
                rpr.color = Some("1B2A4A".to_string());
                rpr
            }),
    );

    // ── Cover Page ──
    for _ in 0..4 {
        doc.add_paragraph("");
    }
    doc.add_paragraph("AI Platform Modernization")
        .style("ProposalTitle")
        .alignment(Alignment::Center);
    doc.add_paragraph("")
        .alignment(Alignment::Center)
        .border_bottom(BorderStyle::Single, 8, "C5922E");
    {
        let mut p = doc.add_paragraph("").alignment(Alignment::Center);
        p.add_run("Prepared for Global Financial Corp.")
            .size(14.0)
            .color("666666")
            .italic(true);
    }
    {
        let mut p = doc.add_paragraph("").alignment(Alignment::Center);
        p.add_run("Prepared by: Walter White, CEO — Tensorbee")
            .size(12.0)
            .color("888888");
    }
    {
        let mut p = doc.add_paragraph("").alignment(Alignment::Center);
        p.add_run("February 22, 2026").size(12.0).color("888888");
    }

    // ── TOC ──
    doc.add_paragraph("").page_break_before(true);
    doc.add_paragraph("Table of Contents").style("Heading1");
    // We'll add a manual-style TOC since the insert_toc goes at a specific position
    doc.insert_toc(doc.content_count(), 2);

    // ── Executive Summary ──
    doc.add_paragraph("").page_break_before(true);
    doc.add_paragraph("Executive Summary").style("Heading1");
    doc.add_paragraph(
        "Tensorbee proposes a comprehensive modernization of Global Financial Corp's AI platform, \
         transitioning from legacy batch-processing systems to a real-time inference architecture. \
         This transformation will reduce model deployment time from weeks to hours, improve \
         prediction accuracy by an estimated 23%, and deliver $4.2M in annual operational savings.",
    )
    .first_line_indent(Length::inches(0.3));
    doc.add_paragraph(
        "The project spans three phases over 18 months, with a total investment of $2.8M. \
         Tensorbee brings deep expertise in ML infrastructure, having successfully completed \
         similar transformations for three Fortune 500 financial institutions.",
    )
    .first_line_indent(Length::inches(0.3));

    // Key metrics table
    doc.add_paragraph("");
    {
        let mut tbl = doc
            .add_table(5, 2)
            .borders(BorderStyle::Single, 4, "1B2A4A")
            .width_pct(80.0);
        tbl.cell(0, 0).unwrap().set_text("Key Metric");
        tbl.cell(0, 0).unwrap().shading("1B2A4A");
        tbl.cell(0, 1).unwrap().set_text("Value");
        tbl.cell(0, 1).unwrap().shading("1B2A4A");
        let rows = [
            ("Total Investment", "$2.8M"),
            ("Annual Savings", "$4.2M"),
            ("ROI (Year 1)", "150%"),
            ("Timeline", "18 months"),
        ];
        for (i, (k, v)) in rows.iter().enumerate() {
            tbl.cell(i + 1, 0).unwrap().set_text(k);
            if i % 2 == 0 {
                tbl.cell(i + 1, 0).unwrap().shading("F4F1EB");
            }
            tbl.cell(i + 1, 1).unwrap().set_text(v);
            if i % 2 == 0 {
                tbl.cell(i + 1, 1).unwrap().shading("F4F1EB");
            }
        }
    }

    // ── Problem Statement ──
    doc.add_paragraph("").page_break_before(true);
    doc.add_paragraph("Problem Statement").style("Heading1");
    doc.add_paragraph(
        "Global Financial Corp's current AI infrastructure faces three critical challenges:",
    );
    doc.add_numbered_list_item("Deployment Latency — New models take 3-4 weeks to deploy to production, compared to the industry benchmark of 2-3 days.", 0);
    doc.add_numbered_list_item("Scalability Constraints — The batch processing architecture cannot handle real-time inference demands during peak trading hours.", 0);
    doc.add_numbered_list_item("Technical Debt — Legacy Python 2.7 codebases and manual deployment scripts create reliability risks and slow iteration speed.", 0);

    // ── Proposed Solution ──
    doc.add_paragraph("").page_break_before(true);
    doc.add_paragraph("Proposed Solution").style("Heading1");

    doc.add_paragraph("Phase 1: Foundation (Months 1-6)")
        .style("Heading2");
    doc.add_bullet_list_item("Deploy Kubernetes-based ML serving infrastructure", 0);
    doc.add_bullet_list_item("Implement CI/CD pipeline for model deployment", 0);
    doc.add_bullet_list_item("Migrate top 5 production models to new platform", 0);

    doc.add_paragraph("Phase 2: Expansion (Months 7-12)")
        .style("Heading2");
    doc.add_bullet_list_item(
        "Real-time feature engineering pipeline (Apache Kafka + Flink)",
        0,
    );
    doc.add_bullet_list_item("A/B testing framework for model variants", 0);
    doc.add_bullet_list_item("Automated model monitoring and drift detection", 0);

    doc.add_paragraph("Phase 3: Optimization (Months 13-18)")
        .style("Heading2");
    doc.add_bullet_list_item("GPU inference optimization (TensorRT/ONNX Runtime)", 0);
    doc.add_bullet_list_item("Multi-region deployment for latency reduction", 0);
    doc.add_bullet_list_item(
        "Self-service model deployment portal for data science teams",
        0,
    );

    // ── Budget ──
    doc.add_paragraph("Budget Breakdown").style("Heading1");
    {
        let mut tbl = doc
            .add_table(6, 3)
            .borders(BorderStyle::Single, 4, "1B2A4A")
            .width_pct(100.0);
        tbl.cell(0, 0).unwrap().set_text("Category");
        tbl.cell(0, 0).unwrap().shading("1B2A4A");
        tbl.cell(0, 1).unwrap().set_text("Cost");
        tbl.cell(0, 1).unwrap().shading("1B2A4A");
        tbl.cell(0, 2).unwrap().set_text("Notes");
        tbl.cell(0, 2).unwrap().shading("1B2A4A");
        let items = [
            (
                "Infrastructure",
                "$450,000",
                "Cloud compute + GPU instances",
            ),
            ("Engineering Services", "$1,600,000", "12 FTE x 18 months"),
            (
                "Software Licenses",
                "$350,000",
                "Kafka, monitoring, CI/CD tools",
            ),
            (
                "Training & Enablement",
                "$200,000",
                "Team training, documentation",
            ),
            ("Contingency (10%)", "$200,000", "Risk buffer"),
        ];
        for (i, (cat, cost, note)) in items.iter().enumerate() {
            tbl.cell(i + 1, 0).unwrap().set_text(cat);
            tbl.cell(i + 1, 1).unwrap().set_text(cost);
            tbl.cell(i + 1, 2).unwrap().set_text(note);
            if i % 2 == 0 {
                tbl.cell(i + 1, 0).unwrap().shading("F4F1EB");
                tbl.cell(i + 1, 1).unwrap().shading("F4F1EB");
                tbl.cell(i + 1, 2).unwrap().shading("F4F1EB");
            }
        }
    }

    // ── Closing ──
    doc.add_paragraph("");
    doc.add_paragraph("Next Steps").style("Heading1");
    doc.add_numbered_list_item(
        "Schedule technical deep-dive with GFC engineering team (Week 1)",
        0,
    );
    doc.add_numbered_list_item("Finalize scope and sign SOW (Week 2-3)", 0);
    doc.add_numbered_list_item("Kick off Phase 1 with joint planning session (Week 4)", 0);

    doc.add_paragraph("");
    {
        let mut p = doc.add_paragraph("").alignment(Alignment::Center);
        p.add_run("Walter White")
            .bold(true)
            .size(14.0)
            .color("1B2A4A");
    }
    {
        let mut p = doc.add_paragraph("").alignment(Alignment::Center);
        p.add_run("CEO, Tensorbee | walter@tensorbee.com")
            .size(10.0)
            .color("888888");
    }

    doc
}

// =============================================================================
// 3. QUOTE / BILL OF MATERIALS — Teal + orange scheme
// =============================================================================
fn generate_quote(_samples_dir: &Path) -> Document {
    let mut doc = Document::new();

    // Colors: Teal #008B8B, Dark #1A3C3C, Orange #E07020, Light #F0F8F8
    doc.set_page_size(Length::inches(8.5), Length::inches(11.0));
    doc.set_margins(
        Length::inches(0.75),
        Length::inches(0.75),
        Length::inches(0.75),
        Length::inches(0.75),
    );
    doc.set_title("Quotation QT-2026-0147");
    doc.set_author("Walter White");
    doc.set_keywords("quote, BOM, Tensorbee");

    doc.set_header("Tensorbee — Quotation");
    doc.set_footer("QT-2026-0147 | Page");

    // ── Header Block ──
    {
        let mut p = doc.add_paragraph("").alignment(Alignment::Left);
        p.add_run("TENSORBEE")
            .bold(true)
            .size(28.0)
            .color("008B8B")
            .font("Helvetica");
    }
    doc.add_paragraph("123 Innovation Drive, Suite 400")
        .alignment(Alignment::Left);
    doc.add_paragraph("San Francisco, CA 94105 | +1 (415) 555-0199")
        .alignment(Alignment::Left);
    doc.add_paragraph("")
        .border_bottom(BorderStyle::Single, 8, "008B8B");

    // Quote meta
    doc.add_paragraph("");
    {
        let mut tbl = doc.add_table(4, 4).width_pct(100.0);
        tbl.cell(0, 0).unwrap().set_text("QUOTATION");
        tbl.cell(0, 0).unwrap().shading("008B8B").grid_span(2);
        tbl.cell(0, 2).unwrap().set_text("DATE");
        tbl.cell(0, 2).unwrap().shading("008B8B");
        tbl.cell(0, 3).unwrap().set_text("VALID UNTIL");
        tbl.cell(0, 3).unwrap().shading("008B8B");
        tbl.cell(1, 0).unwrap().set_text("Quote #:");
        tbl.cell(1, 1).unwrap().set_text("QT-2026-0147");
        tbl.cell(1, 2).unwrap().set_text("Feb 22, 2026");
        tbl.cell(1, 3).unwrap().set_text("Mar 22, 2026");
        tbl.cell(2, 0).unwrap().set_text("Prepared by:");
        tbl.cell(2, 1).unwrap().set_text("Walter White");
        tbl.cell(2, 2).unwrap().set_text("Payment:");
        tbl.cell(2, 3).unwrap().set_text("Net 30");
        tbl.cell(3, 0).unwrap().set_text("Customer:");
        tbl.cell(3, 1).unwrap().set_text("Meridian Dynamics LLC");
        tbl.cell(3, 2).unwrap().set_text("Currency:");
        tbl.cell(3, 3).unwrap().set_text("USD");
    }

    doc.add_paragraph("");

    // ── Bill of Materials ──
    {
        let mut p = doc.add_paragraph("");
        p.add_run("Bill of Materials")
            .bold(true)
            .size(16.0)
            .color("1A3C3C");
    }
    doc.add_paragraph("");

    {
        let mut tbl = doc
            .add_table(10, 6)
            .borders(BorderStyle::Single, 2, "008B8B")
            .width_pct(100.0)
            .layout_fixed();
        // Headers
        let hdrs = [
            "#",
            "Part Number",
            "Description",
            "Qty",
            "Unit Price",
            "Total",
        ];
        for (c, h) in hdrs.iter().enumerate() {
            tbl.cell(0, c).unwrap().set_text(h);
            tbl.cell(0, c).unwrap().shading("008B8B");
        }

        let items: Vec<(&str, &str, &str, &str, &str)> = vec![
            (
                "TB-GPU-A100",
                "NVIDIA A100 80GB GPU",
                "4",
                "$12,500.00",
                "$50,000.00",
            ),
            (
                "TB-SRV-R750",
                "Dell R750xa Server Chassis",
                "2",
                "$8,200.00",
                "$16,400.00",
            ),
            (
                "TB-RAM-256G",
                "256GB DDR5 ECC Memory Module",
                "8",
                "$890.00",
                "$7,120.00",
            ),
            (
                "TB-SSD-3840",
                "3.84TB NVMe U.2 SSD",
                "8",
                "$1,150.00",
                "$9,200.00",
            ),
            (
                "TB-NET-CX7",
                "ConnectX-7 200GbE NIC",
                "4",
                "$1,800.00",
                "$7,200.00",
            ),
            (
                "TB-SW-48P",
                "48-Port 100GbE Switch",
                "1",
                "$22,000.00",
                "$22,000.00",
            ),
            (
                "TB-CAB-RACK",
                "42U Server Rack + PDU",
                "1",
                "$4,500.00",
                "$4,500.00",
            ),
            (
                "TB-SVC-INST",
                "Installation & Configuration",
                "1",
                "$8,500.00",
                "$8,500.00",
            ),
            (
                "TB-SVC-SUPP",
                "3-Year Premium Support",
                "1",
                "$15,000.00",
                "$15,000.00",
            ),
        ];

        for (i, (pn, desc, qty, unit, total)) in items.iter().enumerate() {
            let row = i + 1;
            tbl.cell(row, 0).unwrap().set_text(&format!("{}", i + 1));
            tbl.cell(row, 1).unwrap().set_text(pn);
            tbl.cell(row, 2).unwrap().set_text(desc);
            tbl.cell(row, 3).unwrap().set_text(qty);
            tbl.cell(row, 4).unwrap().set_text(unit);
            tbl.cell(row, 5).unwrap().set_text(total);
            if i % 2 == 0 {
                for c in 0..6 {
                    tbl.cell(row, c).unwrap().shading("F0F8F8");
                }
            }
        }
    }

    doc.add_paragraph("");

    // ── Totals ──
    {
        let mut tbl = doc
            .add_table(4, 2)
            .borders(BorderStyle::Single, 2, "008B8B")
            .width(Length::inches(3.5))
            .alignment(Alignment::Right);
        tbl.cell(0, 0).unwrap().set_text("Subtotal");
        tbl.cell(0, 1).unwrap().set_text("$139,920.00");
        tbl.cell(1, 0).unwrap().set_text("Shipping & Handling");
        tbl.cell(1, 1).unwrap().set_text("$2,500.00");
        tbl.cell(2, 0).unwrap().set_text("Tax (8.625%)");
        tbl.cell(2, 1).unwrap().set_text("$12,068.10");
        tbl.cell(3, 0).unwrap().set_text("TOTAL");
        tbl.cell(3, 0).unwrap().shading("E07020");
        tbl.cell(3, 1).unwrap().set_text("$154,488.10");
        tbl.cell(3, 1).unwrap().shading("E07020");
    }

    doc.add_paragraph("");

    // ── Terms & Conditions ──
    {
        let mut p = doc.add_paragraph("");
        p.add_run("Terms & Conditions")
            .bold(true)
            .size(14.0)
            .color("1A3C3C");
    }
    doc.add_numbered_list_item(
        "This quotation is valid for 30 calendar days from the date of issue.",
        0,
    );
    doc.add_numbered_list_item(
        "All prices are in USD and exclusive of applicable taxes unless stated.",
        0,
    );
    doc.add_numbered_list_item("Standard lead time is 4-6 weeks from PO receipt.", 0);
    doc.add_numbered_list_item(
        "Payment terms: Net 30 from invoice date. 2% discount for payment within 10 days.",
        0,
    );
    doc.add_numbered_list_item(
        "Warranty: 3-year manufacturer warranty on all hardware components.",
        0,
    );
    doc.add_numbered_list_item(
        "Returns subject to 15% restocking fee if initiated after 14 days.",
        0,
    );

    doc.add_paragraph("");
    doc.add_paragraph("")
        .border_bottom(BorderStyle::Single, 4, "008B8B");
    doc.add_paragraph("");
    {
        let mut p = doc.add_paragraph("");
        p.add_run("Accepted by: ").bold(true);
        p.add_run("___________________________ Date: ___________");
    }
    {
        let mut p = doc.add_paragraph("");
        p.add_run("Print Name: ").bold(true);
        p.add_run("___________________________ Title: ___________");
    }

    doc
}

// =============================================================================
// 4. INVOICE — Crimson + charcoal scheme
// =============================================================================
fn generate_invoice(_samples_dir: &Path) -> Document {
    let mut doc = Document::new();

    // Colors: Crimson #B22222, Charcoal #333333, Light #FAF0F0
    doc.set_page_size(Length::inches(8.5), Length::inches(11.0));
    doc.set_margins(
        Length::inches(0.75),
        Length::inches(0.75),
        Length::inches(0.75),
        Length::inches(0.75),
    );
    doc.set_title("Invoice INV-2026-0392");
    doc.set_author("Walter White");
    doc.set_keywords("invoice, Tensorbee");

    doc.set_footer("Tensorbee — Thank you for your business!");

    // ── Company & Invoice Header ──
    {
        let mut tbl = doc.add_table(4, 2).width_pct(100.0);
        // Company name left, INVOICE right
        {
            let mut cell = tbl.cell(0, 0).unwrap();
            let mut p = cell.add_paragraph("");
            p.add_run("TENSORBEE")
                .bold(true)
                .size(32.0)
                .color("B22222")
                .font("Helvetica");
        }
        {
            let mut cell = tbl.cell(0, 1).unwrap();
            let mut p = cell.add_paragraph("");
            p.add_run("INVOICE").bold(true).size(32.0).color("333333");
        }
        tbl.cell(1, 0)
            .unwrap()
            .set_text("123 Innovation Drive, Suite 400");
        tbl.cell(1, 1).unwrap().set_text("Invoice #: INV-2026-0392");
        tbl.cell(2, 0).unwrap().set_text("San Francisco, CA 94105");
        tbl.cell(2, 1).unwrap().set_text("Date: February 22, 2026");
        tbl.cell(3, 0).unwrap().set_text("walter@tensorbee.com");
        tbl.cell(3, 1).unwrap().set_text("Due Date: March 24, 2026");
    }

    doc.add_paragraph("")
        .border_bottom(BorderStyle::Thick, 8, "B22222");
    doc.add_paragraph("");

    // ── Bill To / Ship To ──
    {
        let mut tbl = doc.add_table(4, 2).width_pct(100.0);
        tbl.cell(0, 0).unwrap().set_text("BILL TO");
        tbl.cell(0, 0).unwrap().shading("B22222");
        tbl.cell(0, 1).unwrap().set_text("SHIP TO");
        tbl.cell(0, 1).unwrap().shading("B22222");
        tbl.cell(1, 0).unwrap().set_text("Meridian Dynamics LLC");
        tbl.cell(1, 1).unwrap().set_text("Meridian Dynamics LLC");
        tbl.cell(2, 0).unwrap().set_text("456 Enterprise Blvd");
        tbl.cell(2, 1).unwrap().set_text("Attn: Server Room B");
        tbl.cell(3, 0).unwrap().set_text("Austin, TX 78701");
        tbl.cell(3, 1)
            .unwrap()
            .set_text("456 Enterprise Blvd, Austin, TX 78701");
    }

    doc.add_paragraph("");

    // ── Line Items ──
    {
        let mut tbl = doc
            .add_table(8, 5)
            .borders(BorderStyle::Single, 2, "B22222")
            .width_pct(100.0);
        let hdrs = ["Description", "Qty", "Unit Price", "Tax", "Amount"];
        for (c, h) in hdrs.iter().enumerate() {
            tbl.cell(0, c).unwrap().set_text(h);
            tbl.cell(0, c).unwrap().shading("B22222");
        }
        let items = [
            (
                "ML Infrastructure Setup — Phase 1",
                "1",
                "$45,000.00",
                "$3,881.25",
                "$48,881.25",
            ),
            (
                "Data Pipeline Development (160 hrs)",
                "160",
                "$225.00",
                "$3,105.00",
                "$39,105.00",
            ),
            (
                "GPU Cluster Configuration",
                "1",
                "$12,000.00",
                "$1,035.00",
                "$13,035.00",
            ),
            (
                "API Gateway Implementation",
                "1",
                "$18,500.00",
                "$1,595.63",
                "$20,095.63",
            ),
            (
                "Load Testing & QA (80 hrs)",
                "80",
                "$195.00",
                "$1,345.50",
                "$16,945.50",
            ),
            (
                "Documentation & Training",
                "1",
                "$8,000.00",
                "$690.00",
                "$8,690.00",
            ),
            (
                "Project Management (3 months)",
                "3",
                "$6,500.00",
                "$1,679.63",
                "$21,179.63",
            ),
        ];
        for (i, (desc, qty, unit, tax, amt)) in items.iter().enumerate() {
            let r = i + 1;
            tbl.cell(r, 0).unwrap().set_text(desc);
            tbl.cell(r, 1).unwrap().set_text(qty);
            tbl.cell(r, 2).unwrap().set_text(unit);
            tbl.cell(r, 3).unwrap().set_text(tax);
            tbl.cell(r, 4).unwrap().set_text(amt);
            if i % 2 == 0 {
                for c in 0..5 {
                    tbl.cell(r, c).unwrap().shading("FAF0F0");
                }
            }
        }
    }

    doc.add_paragraph("");

    // ── Totals ──
    {
        let mut tbl = doc
            .add_table(4, 2)
            .borders(BorderStyle::Single, 2, "B22222")
            .width(Length::inches(3.0))
            .alignment(Alignment::Right);
        tbl.cell(0, 0).unwrap().set_text("Subtotal");
        tbl.cell(0, 1).unwrap().set_text("$154,600.00");
        tbl.cell(1, 0).unwrap().set_text("Tax (8.625%)");
        tbl.cell(1, 1).unwrap().set_text("$13,334.25");
        tbl.cell(2, 0).unwrap().set_text("Discount (5%)");
        tbl.cell(2, 1).unwrap().set_text("-$7,730.00");
        tbl.cell(3, 0).unwrap().set_text("AMOUNT DUE");
        tbl.cell(3, 0).unwrap().shading("B22222");
        tbl.cell(3, 1).unwrap().set_text("$160,204.25");
        tbl.cell(3, 1).unwrap().shading("B22222");
    }

    doc.add_paragraph("");
    doc.add_paragraph("");

    // ── Payment Details ──
    {
        let mut p = doc.add_paragraph("");
        p.add_run("Payment Details")
            .bold(true)
            .size(14.0)
            .color("333333");
    }
    doc.add_paragraph("Bank: Silicon Valley Bank")
        .indent_left(Length::inches(0.3));
    doc.add_paragraph("Account: Tensorbee Inc. — 0847-2953-1120")
        .indent_left(Length::inches(0.3));
    doc.add_paragraph("Routing: 121140399")
        .indent_left(Length::inches(0.3));
    doc.add_paragraph("Swift: SVBKUS6S")
        .indent_left(Length::inches(0.3));

    doc.add_paragraph("");

    doc.add_paragraph("Please include invoice number INV-2026-0392 in the payment reference.")
        .shading("FAF0F0")
        .border_all(BorderStyle::Single, 2, "B22222");

    doc
}

// =============================================================================
// 5. REPORT — Forest green + earth tones, with images & hierarchical sections
// =============================================================================
fn generate_report(_samples_dir: &Path) -> Document {
    let mut doc = Document::new();

    // Colors: Forest #2D5016, Sage #6B8E23, Earth #8B7355, Cream #FFFAF0
    doc.set_page_size(Length::inches(8.5), Length::inches(11.0));
    doc.set_margins(
        Length::inches(1.0),
        Length::inches(1.0),
        Length::inches(1.0),
        Length::inches(1.0),
    );
    doc.set_title("Q4 2025 Environmental Impact Report");
    doc.set_author("Walter White");
    doc.set_subject("Quarterly Environmental Report");
    doc.set_keywords("environment, sustainability, report, Tensorbee");

    doc.set_different_first_page(true);
    doc.set_first_page_header("");
    doc.set_header("Tensorbee — Q4 2025 Environmental Impact Report");
    doc.set_footer("CONFIDENTIAL — Page");

    // ── Cover ──
    let cover_bg = create_sample_png(612, 792, [20, 50, 15]);
    doc.add_background_image(&cover_bg, "report_cover.png");

    for _ in 0..5 {
        doc.add_paragraph("");
    }
    {
        let mut p = doc.add_paragraph("").alignment(Alignment::Center);
        p.add_run("Q4 2025")
            .bold(true)
            .size(48.0)
            .color("FFFFFF")
            .font("Georgia");
    }
    {
        let mut p = doc.add_paragraph("").alignment(Alignment::Center);
        p.add_run("Environmental Impact Report")
            .size(24.0)
            .color("90EE90")
            .font("Georgia")
            .italic(true);
    }
    doc.add_paragraph("");
    {
        let mut p = doc.add_paragraph("").alignment(Alignment::Center);
        p.add_run("Tensorbee — Sustainability Division")
            .size(14.0)
            .color("C0C0C0");
    }
    {
        let mut p = doc.add_paragraph("").alignment(Alignment::Center);
        p.add_run("Prepared by Walter White, Chief Sustainability Officer")
            .size(11.0)
            .color("AAAAAA");
    }

    // ── TOC ──
    doc.add_paragraph("").page_break_before(true);
    doc.insert_toc(doc.content_count(), 3);

    // ── Section 1: Executive Overview ──
    doc.add_paragraph("").page_break_before(true);
    doc.add_paragraph("Executive Overview").style("Heading1");
    doc.add_paragraph(
        "This report presents Tensorbee's environmental performance for Q4 2025. Our \
         sustainability initiatives have yielded a 34% reduction in carbon emissions compared \
         to Q4 2024, exceeding our target of 25%. Key achievements include the transition to \
         100% renewable energy in our primary data centers and the launch of our carbon offset \
         marketplace.",
    )
    .first_line_indent(Length::inches(0.3));

    // Image: performance chart
    let chart_img = create_chart_png(400, 200);
    doc.add_paragraph("");
    doc.add_picture(
        &chart_img,
        "performance_chart.png",
        Length::inches(5.0),
        Length::inches(2.5),
    )
    .alignment(Alignment::Center);
    {
        let mut p = doc.add_paragraph("").alignment(Alignment::Center);
        p.add_run("Figure 1: Quarterly Carbon Emissions (tonnes CO2e)")
            .italic(true)
            .size(9.0)
            .color("666666");
    }

    // ── Section 2: Energy Consumption ──
    doc.add_paragraph("").page_break_before(true);
    doc.add_paragraph("Energy Consumption").style("Heading1");

    doc.add_paragraph("Data Center Operations")
        .style("Heading2");
    doc.add_paragraph(
        "Our three primary data centers consumed a combined 4.2 GWh in Q4 2025, \
         a 12% reduction from Q3 2025 driven by improved cooling efficiency and \
         server consolidation.",
    );

    // Data table
    {
        let mut tbl = doc
            .add_table(5, 4)
            .borders(BorderStyle::Single, 4, "2D5016")
            .width_pct(100.0);
        let hdrs = ["Data Center", "Capacity (MW)", "Usage (GWh)", "PUE"];
        for (c, h) in hdrs.iter().enumerate() {
            tbl.cell(0, c).unwrap().set_text(h);
            tbl.cell(0, c).unwrap().shading("2D5016");
        }
        let rows = [
            ("San Francisco (Primary)", "3.2", "1.8", "1.12"),
            ("Dublin (EU)", "2.1", "1.2", "1.18"),
            ("Singapore (APAC)", "1.8", "1.2", "1.24"),
            ("TOTAL", "7.1", "4.2", "1.17 avg"),
        ];
        for (i, (dc, cap, use_, pue)) in rows.iter().enumerate() {
            tbl.cell(i + 1, 0).unwrap().set_text(dc);
            tbl.cell(i + 1, 1).unwrap().set_text(cap);
            tbl.cell(i + 1, 2).unwrap().set_text(use_);
            tbl.cell(i + 1, 3).unwrap().set_text(pue);
            if i == 3 {
                for c in 0..4 {
                    tbl.cell(i + 1, c).unwrap().shading("E2EFDA");
                }
            }
        }
    }

    doc.add_paragraph("");

    doc.add_paragraph("Renewable Energy Mix").style("Heading2");
    doc.add_paragraph("Breakdown of energy sources across all facilities:");

    doc.add_bullet_list_item("Solar PV: 42% (1.76 GWh)", 0);
    doc.add_bullet_list_item("Wind Power Purchase Agreements: 38% (1.60 GWh)", 0);
    doc.add_bullet_list_item("Hydroelectric: 12% (0.50 GWh)", 0);
    doc.add_bullet_list_item("Grid (non-renewable): 8% (0.34 GWh)", 0);

    // ── Section 3: Water & Waste ──
    doc.add_paragraph("Water & Waste Management")
        .style("Heading1");

    doc.add_paragraph("Water Usage").style("Heading2");
    doc.add_paragraph(
        "Total water consumption was 12.4 million gallons, a 15% reduction from Q3. \
         Our closed-loop cooling systems now recycle 78% of water used in cooling operations.",
    );

    doc.add_paragraph("Waste Reduction").style("Heading2");
    doc.add_paragraph("E-waste management results for Q4:")
        .keep_with_next(true);
    {
        let mut tbl = doc
            .add_table(4, 3)
            .borders(BorderStyle::Single, 2, "6B8E23")
            .width_pct(80.0);
        tbl.cell(0, 0).unwrap().set_text("Category");
        tbl.cell(0, 0).unwrap().shading("6B8E23");
        tbl.cell(0, 1).unwrap().set_text("Weight (kg)");
        tbl.cell(0, 1).unwrap().shading("6B8E23");
        tbl.cell(0, 2).unwrap().set_text("Recycled %");
        tbl.cell(0, 2).unwrap().shading("6B8E23");
        let rows = [
            ("Server Hardware", "2,450", "94%"),
            ("Networking Equipment", "820", "91%"),
            ("Storage Media", "340", "99%"),
        ];
        for (i, (cat, wt, pct)) in rows.iter().enumerate() {
            tbl.cell(i + 1, 0).unwrap().set_text(cat);
            tbl.cell(i + 1, 1).unwrap().set_text(wt);
            tbl.cell(i + 1, 2).unwrap().set_text(pct);
        }
    }

    // ── Section 4: Initiatives ──
    doc.add_paragraph("").page_break_before(true);
    doc.add_paragraph("Q1 2026 Initiatives").style("Heading1");

    doc.add_paragraph("Planned Programs").style("Heading2");
    doc.add_numbered_list_item(
        "Deploy on-site battery storage at SF data center (2 MWh capacity)",
        0,
    );
    doc.add_numbered_list_item("Pilot immersion cooling in Dublin facility", 0);
    doc.add_numbered_list_item("Launch employee commute carbon offset program", 0);
    doc.add_numbered_list_item("Achieve ISO 14001 certification for Singapore facility", 0);

    doc.add_paragraph("Investment Targets").style("Heading2");
    doc.add_paragraph("Sustainability CapEx allocation for FY2026:")
        .keep_with_next(true);
    {
        let mut tbl = doc
            .add_table(5, 2)
            .borders(BorderStyle::Single, 4, "2D5016");
        tbl.cell(0, 0).unwrap().set_text("Initiative");
        tbl.cell(0, 0).unwrap().shading("2D5016");
        tbl.cell(0, 1).unwrap().set_text("Budget");
        tbl.cell(0, 1).unwrap().shading("2D5016");
        let rows = [
            ("Battery Storage", "$1.2M"),
            ("Immersion Cooling Pilot", "$800K"),
            ("Solar Panel Expansion", "$2.1M"),
            ("Carbon Credits", "$500K"),
        ];
        for (i, (init, budget)) in rows.iter().enumerate() {
            tbl.cell(i + 1, 0).unwrap().set_text(init);
            tbl.cell(i + 1, 1).unwrap().set_text(budget);
            if i % 2 == 0 {
                tbl.cell(i + 1, 0).unwrap().shading("FFFAF0");
                tbl.cell(i + 1, 1).unwrap().shading("FFFAF0");
            }
        }
    }

    // Image: sustainability roadmap
    let roadmap_img = create_sample_png(500, 100, [40, 80, 30]);
    doc.add_paragraph("");
    doc.add_picture(
        &roadmap_img,
        "roadmap.png",
        Length::inches(6.0),
        Length::inches(1.2),
    )
    .alignment(Alignment::Center);
    {
        let mut p = doc.add_paragraph("").alignment(Alignment::Center);
        p.add_run("Figure 2: 2026 Sustainability Roadmap")
            .italic(true)
            .size(9.0)
            .color("666666");
    }

    doc.add_paragraph("");
    doc.add_paragraph(
        "For questions about this report, contact Walter White at sustainability@tensorbee.com.",
    )
    .shading("FFFAF0")
    .border_all(BorderStyle::Single, 2, "2D5016");

    doc
}

// =============================================================================
// 6. LETTER — Slate blue + silver scheme
// =============================================================================
fn generate_letter(_samples_dir: &Path) -> Document {
    let mut doc = Document::new();

    // Colors: Slate #4A5568, Blue accent #3182CE
    doc.set_page_size(Length::inches(8.5), Length::inches(11.0));
    doc.set_margins(
        Length::inches(1.25),
        Length::inches(1.25),
        Length::inches(1.25),
        Length::inches(1.25),
    );
    doc.set_title("Business Letter");
    doc.set_author("Walter White");

    // Banner header using raw XML
    let logo_img = create_logo_png(220, 48);
    let banner = build_header_banner_xml(
        "rId1",
        &BannerOpts {
            bg_color: "4A5568",
            banner_width: 7772400,
            banner_height: 731520, // ~0.8"
            logo_width: 2011680,
            logo_height: 438912,
            logo_x_offset: 295125,
            logo_y_offset: 146304,
        },
    );
    doc.set_raw_header_with_images(
        banner,
        &[("rId1", &logo_img, "logo.png")],
        rdocx_oxml::header_footer::HdrFtrType::Default,
    );
    doc.set_margins(
        Length::twips(2000),
        Length::twips(1800),
        Length::twips(1440),
        Length::twips(1800),
    );
    doc.set_header_footer_distance(Length::twips(720), Length::twips(432));

    // Footer with contact
    doc.set_footer(
        "Tensorbee | 123 Innovation Drive, Suite 400 | San Francisco, CA 94105 | tensorbee.com",
    );

    // ── Sender Address ──
    doc.add_paragraph("Walter White");
    doc.add_paragraph("Chief Executive Officer");
    doc.add_paragraph("Tensorbee");
    doc.add_paragraph("123 Innovation Drive, Suite 400");
    doc.add_paragraph("San Francisco, CA 94105");
    doc.add_paragraph("");
    doc.add_paragraph("February 22, 2026");

    doc.add_paragraph("");

    // ── Recipient ──
    doc.add_paragraph("Ms. Sarah Chen");
    doc.add_paragraph("VP of Engineering");
    doc.add_paragraph("Meridian Dynamics LLC");
    doc.add_paragraph("456 Enterprise Boulevard");
    doc.add_paragraph("Austin, TX 78701");

    doc.add_paragraph("");

    // ── Subject ──
    {
        let mut p = doc.add_paragraph("");
        p.add_run("Re: Strategic Technology Partnership — Phase 2 Expansion")
            .bold(true);
    }

    doc.add_paragraph("");

    // ── Body ──
    doc.add_paragraph("Dear Ms. Chen,");
    doc.add_paragraph("");

    doc.add_paragraph(
        "I am writing to express Tensorbee's enthusiasm for expanding our strategic technology \
         partnership with Meridian Dynamics. Following the successful completion of Phase 1, \
         which delivered a 40% improvement in your ML inference pipeline throughput, we believe \
         the foundation is firmly established for an ambitious Phase 2 engagement.",
    )
    .first_line_indent(Length::inches(0.5));

    doc.add_paragraph(
        "During our recent executive review, your team highlighted three priority areas for \
         the next phase of collaboration:",
    )
    .first_line_indent(Length::inches(0.5));

    doc.add_numbered_list_item(
        "Real-time anomaly detection for your financial transaction monitoring system, \
         targeting sub-100ms latency at 50,000 transactions per second.",
        0,
    );
    doc.add_numbered_list_item(
        "Federated learning infrastructure to enable model training across your distributed \
         data centers without centralizing sensitive financial data.",
        0,
    );
    doc.add_numbered_list_item(
        "MLOps automation to reduce your model deployment cycle from the current 5 days \
         to under 4 hours.",
        0,
    );

    doc.add_paragraph(
        "Our engineering team has prepared a detailed technical proposal addressing each of \
         these areas. We have allocated a dedicated team of eight senior engineers, led by \
         our CTO, to ensure continuity with the Phase 1 team your organization has already \
         built a productive working relationship with.",
    )
    .first_line_indent(Length::inches(0.5));

    doc.add_paragraph(
        "I would welcome the opportunity to present our Phase 2 proposal in person. My \
         assistant will reach out to coordinate a meeting at your convenience during the \
         first week of March.",
    )
    .first_line_indent(Length::inches(0.5));

    doc.add_paragraph("");

    doc.add_paragraph("Warm regards,");
    doc.add_paragraph("");
    doc.add_paragraph("");

    // Signature line
    doc.add_paragraph("")
        .border_bottom(BorderStyle::Single, 4, "4A5568");
    {
        let mut p = doc.add_paragraph("");
        p.add_run("Walter White").bold(true).size(12.0);
    }
    {
        let mut p = doc.add_paragraph("");
        p.add_run("Chief Executive Officer, Tensorbee")
            .italic(true)
            .size(10.0)
            .color("666666");
    }
    {
        let mut p = doc.add_paragraph("");
        p.add_run("walter@tensorbee.com | +1 (415) 555-0199")
            .size(10.0)
            .color("888888");
    }

    doc
}

// =============================================================================
// 7. EMPLOYMENT CONTRACT — Purple + charcoal scheme
// =============================================================================
fn generate_contract(_samples_dir: &Path) -> Document {
    let mut doc = Document::new();

    // Colors: Purple #5B2C6F, Plum #8E44AD, Gray #2C3E50
    doc.set_page_size(Length::inches(8.5), Length::inches(11.0));
    doc.set_margins(
        Length::inches(1.25),
        Length::inches(1.0),
        Length::inches(1.0),
        Length::inches(1.0),
    );
    doc.set_title("Employment Agreement");
    doc.set_author("Tensorbee HR Department");
    doc.set_subject("Employment Contract — Walter White");
    doc.set_keywords("employment, contract, agreement, Tensorbee");

    doc.set_header("TENSORBEE — Employment Agreement");
    doc.set_footer("Employment Agreement — Walter White — Page");

    // ── Title Block ──
    doc.add_paragraph("")
        .border_bottom(BorderStyle::Thick, 12, "5B2C6F");
    {
        let mut p = doc.add_paragraph("").alignment(Alignment::Center);
        p.add_run("EMPLOYMENT AGREEMENT")
            .bold(true)
            .size(24.0)
            .color("5B2C6F")
            .font("Georgia");
    }
    doc.add_paragraph("")
        .border_bottom(BorderStyle::Thick, 12, "5B2C6F");
    doc.add_paragraph("");

    // ── Parties ──
    doc.add_paragraph(
        "This Employment Agreement (\"Agreement\") is entered into as of February 22, 2026 \
         (\"Effective Date\"), by and between:",
    );

    doc.add_paragraph("");

    {
        let mut p = doc.add_paragraph("").indent_left(Length::inches(0.5));
        p.add_run("EMPLOYER: ").bold(true);
        p.add_run(
            "Tensorbee, Inc., a Delaware corporation with its principal place of business at \
                   123 Innovation Drive, Suite 400, San Francisco, CA 94105 (\"Company\")",
        );
    }
    doc.add_paragraph("");
    {
        let mut p = doc.add_paragraph("").indent_left(Length::inches(0.5));
        p.add_run("EMPLOYEE: ").bold(true);
        p.add_run(
            "Walter White, residing at 308 Negra Arroyo Lane, Albuquerque, NM 87104 (\"Employee\")",
        );
    }

    doc.add_paragraph("");
    doc.add_paragraph("The Company and Employee are collectively referred to as the \"Parties.\"");
    doc.add_paragraph("");

    // ── Article 1: Position and Duties ──
    doc.add_paragraph("Article 1 — Position and Duties")
        .style("Heading1");
    {
        let mut p = doc.add_paragraph("");
        p.add_run("1.1 ").bold(true);
        p.add_run("The Company hereby employs the Employee as ");
        p.add_run("Chief Executive Officer (CEO)")
            .bold(true)
            .italic(true);
        p.add_run(", reporting directly to the Board of Directors.");
    }
    {
        let mut p = doc.add_paragraph("");
        p.add_run("1.2 ").bold(true);
        p.add_run("The Employee shall devote full working time, attention, and best efforts to \
                   the performance of duties as reasonably assigned by the Board, including but not limited to:");
    }
    doc.add_bullet_list_item(
        "Setting and executing the Company's strategic vision and business plan",
        0,
    );
    doc.add_bullet_list_item(
        "Overseeing all operations, engineering, and commercial activities",
        0,
    );
    doc.add_bullet_list_item(
        "Representing the Company to investors, customers, and the public",
        0,
    );
    doc.add_bullet_list_item("Recruiting, developing, and retaining key talent", 0);

    {
        let mut p = doc.add_paragraph("");
        p.add_run("1.3 ").bold(true);
        p.add_run(
            "The Employee's primary work location shall be the Company's San Francisco \
                   headquarters, with reasonable travel as required by business needs.",
        );
    }

    // ── Article 2: Compensation ──
    doc.add_paragraph("Article 2 — Compensation and Benefits")
        .style("Heading1");
    {
        let mut p = doc.add_paragraph("");
        p.add_run("2.1 Base Salary. ").bold(true);
        p.add_run("The Company shall pay the Employee an annual base salary of ");
        p.add_run("$375,000.00").bold(true);
        p.add_run(" (Three Hundred Seventy-Five Thousand Dollars), payable in accordance with the \
                   Company's standard payroll schedule, less applicable withholdings and deductions.");
    }
    {
        let mut p = doc.add_paragraph("");
        p.add_run("2.2 Annual Bonus. ").bold(true);
        p.add_run("The Employee shall be eligible for an annual performance bonus of up to ");
        p.add_run("40%").bold(true);
        p.add_run(
            " of base salary, based on achievement of mutually agreed performance objectives.",
        );
    }
    {
        let mut p = doc.add_paragraph("");
        p.add_run("2.3 Equity. ").bold(true);
        p.add_run("Subject to Board approval, the Employee shall receive a stock option grant of ");
        p.add_run("500,000 shares").bold(true);
        p.add_run(
            " of the Company's common stock, vesting over four (4) years with a one-year cliff, \
                   at an exercise price equal to the fair market value on the date of grant.",
        );
    }

    // Compensation summary table
    doc.add_paragraph("");
    {
        let mut tbl = doc
            .add_table(5, 2)
            .borders(BorderStyle::Single, 4, "5B2C6F")
            .width_pct(70.0)
            .alignment(Alignment::Center);
        tbl.cell(0, 0).unwrap().set_text("Compensation Element");
        tbl.cell(0, 0).unwrap().shading("5B2C6F");
        tbl.cell(0, 1).unwrap().set_text("Value");
        tbl.cell(0, 1).unwrap().shading("5B2C6F");
        let items = [
            ("Base Salary", "$375,000/year"),
            ("Target Bonus", "Up to 40% ($150,000)"),
            ("Equity Grant", "500,000 shares (4yr vest)"),
            ("Total Target Comp", "$525,000 + equity"),
        ];
        for (i, (elem, val)) in items.iter().enumerate() {
            tbl.cell(i + 1, 0).unwrap().set_text(elem);
            tbl.cell(i + 1, 1).unwrap().set_text(val);
            if i == 3 {
                tbl.cell(i + 1, 0).unwrap().shading("E8DAEF");
                tbl.cell(i + 1, 1).unwrap().shading("E8DAEF");
            }
        }
    }

    // ── Article 3: Benefits ──
    doc.add_paragraph("").page_break_before(true);
    doc.add_paragraph("Article 3 — Benefits").style("Heading1");
    {
        let mut p = doc.add_paragraph("");
        p.add_run("3.1 ").bold(true);
        p.add_run(
            "The Employee shall be entitled to participate in all benefit programs \
                   generally available to senior executives, including:",
        );
    }
    doc.add_bullet_list_item(
        "Medical, dental, and vision insurance (100% premium coverage for employee and dependents)",
        0,
    );
    doc.add_bullet_list_item("401(k) retirement plan with 6% company match", 0);
    doc.add_bullet_list_item("Life insurance and long-term disability coverage", 0);
    doc.add_bullet_list_item("Annual professional development allowance of $10,000", 0);

    {
        let mut p = doc.add_paragraph("");
        p.add_run("3.2 Paid Time Off. ").bold(true);
        p.add_run(
            "The Employee shall receive 25 days of paid vacation per year, plus Company holidays, \
                   accruing on a monthly basis.",
        );
    }

    // ── Article 4: Term and Termination ──
    doc.add_paragraph("Article 4 — Term and Termination")
        .style("Heading1");
    {
        let mut p = doc.add_paragraph("");
        p.add_run("4.1 At-Will Employment. ").bold(true);
        p.add_run(
            "This Agreement is for at-will employment and may be terminated by either Party \
                   at any time, with or without cause, subject to the notice provisions herein.",
        );
    }
    {
        let mut p = doc.add_paragraph("");
        p.add_run("4.2 Notice Period. ").bold(true);
        p.add_run("Either Party shall provide ");
        p.add_run("ninety (90) days").bold(true);
        p.add_run(" written notice of termination, or pay in lieu thereof.");
    }
    {
        let mut p = doc.add_paragraph("");
        p.add_run("4.3 Severance. ").bold(true);
        p.add_run("In the event of termination by the Company without Cause, the Employee shall \
                   receive (a) twelve (12) months of base salary continuation, (b) pro-rata bonus \
                   for the year of termination, and (c) twelve (12) months of COBRA premium coverage.");
    }

    // ── Article 5: Confidentiality ──
    doc.add_paragraph("Article 5 — Confidentiality and IP")
        .style("Heading1");
    {
        let mut p = doc.add_paragraph("");
        p.add_run("5.1 ").bold(true);
        p.add_run(
            "The Employee agrees to maintain strict confidentiality of all proprietary \
                   information, trade secrets, and business plans of the Company during and after \
                   employment.",
        );
    }
    {
        let mut p = doc.add_paragraph("");
        p.add_run("5.2 ").bold(true);
        p.add_run(
            "All intellectual property, inventions, and works of authorship created by the \
                   Employee during the term of employment and within the scope of duties shall be \
                   the sole and exclusive property of the Company.",
        );
    }

    // ── Article 6: Non-Compete ──
    doc.add_paragraph("Article 6 — Non-Competition")
        .style("Heading1");
    {
        let mut p = doc.add_paragraph("");
        p.add_run("6.1 ").bold(true);
        p.add_run("For a period of twelve (12) months following termination, the Employee agrees \
                   not to engage in any business that directly competes with the Company's core \
                   business of AI infrastructure and ML operations services, within the United States.");
    }

    // ── Article 7: General Provisions ──
    doc.add_paragraph("Article 7 — General Provisions")
        .style("Heading1");
    {
        let mut p = doc.add_paragraph("");
        p.add_run("7.1 Governing Law. ").bold(true);
        p.add_run(
            "This Agreement shall be governed by and construed in accordance with the laws of \
                   the State of California.",
        );
    }
    {
        let mut p = doc.add_paragraph("");
        p.add_run("7.2 Entire Agreement. ").bold(true);
        p.add_run(
            "This Agreement constitutes the entire agreement between the Parties and supersedes \
                   all prior negotiations, representations, and agreements.",
        );
    }
    {
        let mut p = doc.add_paragraph("");
        p.add_run("7.3 Amendment. ").bold(true);
        p.add_run(
            "This Agreement may only be amended by a written instrument signed by both Parties.",
        );
    }

    // ── Signature Block ──
    doc.add_paragraph("").page_break_before(true);
    doc.add_paragraph("IN WITNESS WHEREOF, the Parties have executed this Employment Agreement as of the Effective Date.")
        .space_after(Length::pt(24.0));

    // Signature table
    {
        let mut tbl = doc.add_table(6, 2).width_pct(100.0);
        tbl.cell(0, 0).unwrap().set_text("FOR THE COMPANY:");
        tbl.cell(0, 0).unwrap().shading("5B2C6F");
        tbl.cell(0, 1).unwrap().set_text("EMPLOYEE:");
        tbl.cell(0, 1).unwrap().shading("5B2C6F");

        tbl.cell(1, 0).unwrap().set_text("");
        tbl.cell(1, 1).unwrap().set_text("");
        tbl.row(1).unwrap().height(Length::pt(40.0));

        tbl.cell(2, 0)
            .unwrap()
            .set_text("Signature: ___________________________");
        tbl.cell(2, 1)
            .unwrap()
            .set_text("Signature: ___________________________");
        tbl.cell(3, 0)
            .unwrap()
            .set_text("Name: Board Representative");
        tbl.cell(3, 1).unwrap().set_text("Name: Walter White");
        tbl.cell(4, 0)
            .unwrap()
            .set_text("Title: Chair, Board of Directors");
        tbl.cell(4, 1)
            .unwrap()
            .set_text("Title: Chief Executive Officer");
        tbl.cell(5, 0).unwrap().set_text("Date: _______________");
        tbl.cell(5, 1).unwrap().set_text("Date: _______________");
    }

    doc
}

// =============================================================================
// PNG generation helpers
// =============================================================================

/// Create a gradient sample PNG (used for backgrounds, charts, etc.)
fn create_sample_png(width: u32, height: u32, base_color: [u8; 3]) -> Vec<u8> {
    let mut pixels = Vec::with_capacity((width * height * 4) as usize);
    for y in 0..height {
        for x in 0..width {
            let fy = y as f64 / height as f64;
            let fx = x as f64 / width as f64;
            let r = (base_color[0] as f64 + (1.0 - fy) * 40.0).min(255.0) as u8;
            let g = (base_color[1] as f64 + fx * 30.0).min(255.0) as u8;
            let b = (base_color[2] as f64 + fy * 60.0).min(255.0) as u8;
            pixels.extend_from_slice(&[r, g, b, 255]);
        }
    }
    encode_png(width, height, &pixels)
}

/// Create a simple bar chart PNG for the report.
fn create_chart_png(width: u32, height: u32) -> Vec<u8> {
    let mut pixels = vec![0u8; (width * height * 4) as usize];
    // White background
    for i in 0..pixels.len() / 4 {
        pixels[i * 4] = 255;
        pixels[i * 4 + 1] = 255;
        pixels[i * 4 + 2] = 255;
        pixels[i * 4 + 3] = 255;
    }
    // Draw simple bars
    let bars: Vec<(u32, u32, [u8; 3])> = vec![
        (30, 150, [45, 80, 22]),  // Q1
        (100, 120, [45, 80, 22]), // Q2
        (170, 100, [45, 80, 22]), // Q3
        (240, 70, [45, 80, 22]),  // Q4 (best)
    ];
    for (bx, bar_height, color) in &bars {
        let bar_width = 50;
        let y_start = height - bar_height;
        for y in y_start..height {
            for x in *bx..(*bx + bar_width).min(width) {
                let idx = ((y * width + x) * 4) as usize;
                if idx + 3 < pixels.len() {
                    pixels[idx] = color[0];
                    pixels[idx + 1] = color[1];
                    pixels[idx + 2] = color[2];
                    pixels[idx + 3] = 255;
                }
            }
        }
    }
    encode_png(width, height, &pixels)
}

/// Create a logo placeholder PNG (white rectangle on transparent).
fn create_logo_png(width: u32, height: u32) -> Vec<u8> {
    let mut pixels = Vec::with_capacity((width * height * 4) as usize);
    for y in 0..height {
        for x in 0..width {
            let in_text_area =
                x > width / 8 && x < width * 7 / 8 && y > height / 4 && y < height * 3 / 4;
            if in_text_area {
                pixels.extend_from_slice(&[255, 255, 255, 255]);
            } else {
                pixels.extend_from_slice(&[255, 255, 255, 40]);
            }
        }
    }
    encode_png(width, height, &pixels)
}

// =============================================================================
// PNG encoding (no external dependencies)
// =============================================================================

fn encode_png(width: u32, height: u32, pixels: &[u8]) -> Vec<u8> {
    let mut png = Vec::new();
    {
        use std::io::Write as _;
        png.write_all(&[137, 80, 78, 71, 13, 10, 26, 10]).unwrap();

        let mut ihdr = Vec::new();
        ihdr.extend_from_slice(&width.to_be_bytes());
        ihdr.extend_from_slice(&height.to_be_bytes());
        ihdr.extend_from_slice(&[8, 6, 0, 0, 0]); // 8-bit RGBA
        write_chunk(&mut png, b"IHDR", &ihdr);

        let mut raw = Vec::new();
        for y in 0..height {
            raw.push(0); // filter: None
            let s = (y * width * 4) as usize;
            raw.extend_from_slice(&pixels[s..s + (width * 4) as usize]);
        }
        write_chunk(&mut png, b"IDAT", &zlib_store(&raw));
        write_chunk(&mut png, b"IEND", &[]);
    }
    png
}

fn write_chunk(out: &mut Vec<u8>, ct: &[u8; 4], data: &[u8]) {
    use std::io::Write as _;
    out.write_all(&(data.len() as u32).to_be_bytes()).unwrap();
    out.write_all(ct).unwrap();
    out.write_all(data).unwrap();
    out.write_all(&crc32(ct, data).to_be_bytes()).unwrap();
}

fn crc32(ct: &[u8], data: &[u8]) -> u32 {
    static T: std::sync::LazyLock<[u32; 256]> = std::sync::LazyLock::new(|| {
        let mut t = [0u32; 256];
        for n in 0..256u32 {
            let mut c = n;
            for _ in 0..8 {
                c = if c & 1 != 0 {
                    0xEDB88320 ^ (c >> 1)
                } else {
                    c >> 1
                };
            }
            t[n as usize] = c;
        }
        t
    });
    let mut c = 0xFFFFFFFF_u32;
    for &b in ct.iter().chain(data) {
        c = T[((c ^ b as u32) & 0xFF) as usize] ^ (c >> 8);
    }
    c ^ 0xFFFFFFFF
}

fn zlib_store(data: &[u8]) -> Vec<u8> {
    let mut out = vec![0x78, 0x01];
    let chunks: Vec<&[u8]> = data.chunks(65535).collect();
    for (i, chunk) in chunks.iter().enumerate() {
        let last = i == chunks.len() - 1;
        out.push(if last { 0x01 } else { 0x00 });
        let len = chunk.len() as u16;
        out.extend_from_slice(&len.to_le_bytes());
        out.extend_from_slice(&(!len).to_le_bytes());
        out.extend_from_slice(chunk);
    }
    let (mut a, mut b) = (1u32, 0u32);
    for &byte in data {
        a = (a + byte as u32) % 65521;
        b = (b + a) % 65521;
    }
    out.extend_from_slice(&((b << 16) | a).to_be_bytes());
    out
}

// =============================================================================
// Header banner builder (DrawingML group shape via raw XML)
// =============================================================================

struct BannerOpts<'a> {
    bg_color: &'a str,
    banner_width: i64,
    banner_height: i64,
    logo_width: i64,
    logo_height: i64,
    logo_x_offset: i64,
    logo_y_offset: i64,
}

fn build_header_banner_xml(image_rel_id: &str, opts: &BannerOpts) -> Vec<u8> {
    let mut xml = String::with_capacity(2048);
    write!(
        xml,
        r#"<?xml version="1.0" encoding="UTF-8" standalone="yes"?>"#
    )
    .unwrap();
    write!(xml, r#"<w:hdr "#).unwrap();
    write!(
        xml,
        r#"xmlns:w="http://schemas.openxmlformats.org/wordprocessingml/2006/main" "#
    )
    .unwrap();
    write!(
        xml,
        r#"xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships" "#
    )
    .unwrap();
    write!(
        xml,
        r#"xmlns:wp="http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawing" "#
    )
    .unwrap();
    write!(
        xml,
        r#"xmlns:a="http://schemas.openxmlformats.org/drawingml/2006/main" "#
    )
    .unwrap();
    write!(
        xml,
        r#"xmlns:pic="http://schemas.openxmlformats.org/drawingml/2006/picture" "#
    )
    .unwrap();
    write!(
        xml,
        r#"xmlns:wpg="http://schemas.microsoft.com/office/word/2010/wordprocessingGroup" "#
    )
    .unwrap();
    write!(
        xml,
        r#"xmlns:wps="http://schemas.microsoft.com/office/word/2010/wordprocessingShape" "#
    )
    .unwrap();
    write!(
        xml,
        r#"xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006">"#
    )
    .unwrap();
    write!(xml, r#"<w:p><w:pPr><w:pStyle w:val="Header"/></w:pPr>"#).unwrap();
    write!(xml, r#"<w:r><w:rPr><w:noProof/></w:rPr>"#).unwrap();
    write!(
        xml,
        r#"<mc:AlternateContent><mc:Choice Requires="wpg"><w:drawing>"#
    )
    .unwrap();
    write!(
        xml,
        r#"<wp:anchor distT="0" distB="0" distL="0" distR="0" "#
    )
    .unwrap();
    write!(
        xml,
        r#"simplePos="0" relativeHeight="251658240" behindDoc="0" "#
    )
    .unwrap();
    write!(
        xml,
        r#"locked="0" layoutInCell="1" hidden="0" allowOverlap="1">"#
    )
    .unwrap();
    write!(xml, r#"<wp:simplePos x="0" y="0"/>"#).unwrap();
    write!(
        xml,
        r#"<wp:positionH relativeFrom="page"><wp:posOffset>0</wp:posOffset></wp:positionH>"#
    )
    .unwrap();
    write!(
        xml,
        r#"<wp:positionV relativeFrom="page"><wp:posOffset>0</wp:posOffset></wp:positionV>"#
    )
    .unwrap();
    write!(
        xml,
        r#"<wp:extent cx="{}" cy="{}"/>"#,
        opts.banner_width, opts.banner_height
    )
    .unwrap();
    write!(
        xml,
        r#"<wp:effectExtent l="0" t="0" r="0" b="0"/><wp:wrapNone/>"#
    )
    .unwrap();
    write!(
        xml,
        r#"<wp:docPr id="1" name="Header Banner"/><wp:cNvGraphicFramePr/>"#
    )
    .unwrap();
    write!(xml, r#"<a:graphic><a:graphicData uri="http://schemas.microsoft.com/office/word/2010/wordprocessingGroup">"#).unwrap();
    write!(xml, r#"<wpg:wgp><wpg:cNvGrpSpPr/><wpg:grpSpPr><a:xfrm>"#).unwrap();
    write!(
        xml,
        r#"<a:off x="0" y="0"/><a:ext cx="{w}" cy="{h}"/>"#,
        w = opts.banner_width,
        h = opts.banner_height
    )
    .unwrap();
    write!(
        xml,
        r#"<a:chOff x="0" y="0"/><a:chExt cx="{w}" cy="{h}"/>"#,
        w = opts.banner_width,
        h = opts.banner_height
    )
    .unwrap();
    write!(xml, r#"</a:xfrm></wpg:grpSpPr>"#).unwrap();
    // Background rectangle
    write!(
        xml,
        r#"<wps:wsp><wps:cNvPr id="2" name="BG"/><wps:cNvSpPr/><wps:spPr>"#
    )
    .unwrap();
    write!(
        xml,
        r#"<a:xfrm><a:off x="0" y="0"/><a:ext cx="{w}" cy="{h}"/></a:xfrm>"#,
        w = opts.banner_width,
        h = opts.banner_height
    )
    .unwrap();
    write!(xml, r#"<a:prstGeom prst="rect"><a:avLst/></a:prstGeom>"#).unwrap();
    write!(
        xml,
        r#"<a:solidFill><a:srgbClr val="{}"/></a:solidFill>"#,
        opts.bg_color
    )
    .unwrap();
    write!(
        xml,
        r#"<a:ln><a:noFill/></a:ln></wps:spPr><wps:bodyPr/></wps:wsp>"#
    )
    .unwrap();
    // Logo image
    write!(
        xml,
        r#"<pic:pic><pic:nvPicPr><pic:cNvPr id="3" name="Logo"/><pic:cNvPicPr/></pic:nvPicPr>"#
    )
    .unwrap();
    write!(xml, r#"<pic:blipFill><a:blip r:embed="{}"/><a:stretch><a:fillRect/></a:stretch></pic:blipFill>"#, image_rel_id).unwrap();
    write!(
        xml,
        r#"<pic:spPr><a:xfrm><a:off x="{}" y="{}"/><a:ext cx="{}" cy="{}"/></a:xfrm>"#,
        opts.logo_x_offset, opts.logo_y_offset, opts.logo_width, opts.logo_height
    )
    .unwrap();
    write!(xml, r#"<a:prstGeom prst="rect"><a:avLst/></a:prstGeom><a:noFill/><a:ln><a:noFill/></a:ln></pic:spPr></pic:pic>"#).unwrap();
    write!(xml, r#"</wpg:wgp></a:graphicData></a:graphic>"#).unwrap();
    write!(
        xml,
        r#"</wp:anchor></w:drawing></mc:Choice></mc:AlternateContent>"#
    )
    .unwrap();
    write!(xml, r#"</w:r></w:p></w:hdr>"#).unwrap();
    xml.into_bytes()
}