const pptxgen = require("pptxgenjs");
const fs = require("fs");

const page0 = fs.readFileSync('/home/daytona/workspace/colles-fracture-ppt/page0.b64', 'utf8');
const page1 = fs.readFileSync('/home/daytona/workspace/colles-fracture-ppt/page1.b64', 'utf8');
const page2 = fs.readFileSync('/home/daytona/workspace/colles-fracture-ppt/page2.b64', 'utf8');

let pres = new pptxgen();
pres.layout = 'LAYOUT_16x9';
pres.title = "Colles' Fracture";

// ── COLOR PALETTE ──────────────────────────────────────────────
const DARK      = "1A2B3C";   // deep navy - dominant
const MED_BLUE  = "2C4A6E";   // medium navy
const ACCENT    = "C0392B";   // rich red accent
const LIGHT_BG  = "EAF0F6";   // very light blue-grey
const WHITE     = "FFFFFF";
const GOLD      = "D4A017";   // highlight gold
const SUBTEXT   = "B0C4D8";   // muted light blue for labels

// Helper: dark slide header bar
function addHeader(slide, title) {
  slide.addShape(pres.ShapeType.rect, { x: 0, y: 0, w: 10, h: 0.7, fill: { color: ACCENT } });
  slide.addText(title, {
    x: 0.3, y: 0, w: 9.4, h: 0.7,
    fontSize: 20, bold: true, color: WHITE, valign: "middle", margin: 0
  });
}

// Helper: section label pill
function addPill(slide, text, x, y, w) {
  slide.addShape(pres.ShapeType.rect, { x, y, w, h: 0.28, fill: { color: MED_BLUE }, line: { color: MED_BLUE } });
  slide.addText(text, { x, y, w, h: 0.28, fontSize: 9, bold: true, color: GOLD, align: "center", valign: "middle", margin: 0 });
}

// Helper: content box
function addBox(slide, x, y, w, h) {
  slide.addShape(pres.ShapeType.rect, { x, y, w, h, fill: { color: LIGHT_BG }, line: { color: MED_BLUE, pt: 1 } });
}

// ── SLIDE 1: TITLE ─────────────────────────────────────────────
{
  let s = pres.addSlide();
  // full dark background
  s.addShape(pres.ShapeType.rect, { x: 0, y: 0, w: 10, h: 5.625, fill: { color: DARK } });
  // accent band
  s.addShape(pres.ShapeType.rect, { x: 0, y: 2.1, w: 10, h: 0.07, fill: { color: ACCENT } });
  // decorative left stripe
  s.addShape(pres.ShapeType.rect, { x: 0, y: 0, w: 0.18, h: 5.625, fill: { color: ACCENT } });

  s.addText("COLLES' FRACTURE", {
    x: 0.5, y: 1.1, w: 9, h: 0.9,
    fontSize: 42, bold: true, color: WHITE, align: "center", charSpacing: 4
  });
  s.addText("Fracture of the Distal Radius", {
    x: 0.5, y: 2.2, w: 9, h: 0.5,
    fontSize: 20, color: GOLD, align: "center", italic: true
  });
  s.addText("Chapter 15 - Injuries of the Forearm and Wrist", {
    x: 0.5, y: 2.85, w: 9, h: 0.35,
    fontSize: 13, color: SUBTEXT, align: "center"
  });
  s.addText("Essentials of Orthopaedics  |  Maheshwari", {
    x: 0.5, y: 3.25, w: 9, h: 0.32,
    fontSize: 12, color: SUBTEXT, align: "center", italic: true
  });

  // bottom bar
  s.addShape(pres.ShapeType.rect, { x: 0, y: 5.25, w: 10, h: 0.375, fill: { color: MED_BLUE } });
  s.addText("Chapter 15 | Maheshwari Essential Orthopaedics", {
    x: 0.3, y: 5.25, w: 9.4, h: 0.375, fontSize: 9, color: SUBTEXT, align: "right", valign: "middle", margin: 0
  });
}

// ── SLIDE 2: DEFINITION & EPIDEMIOLOGY ─────────────────────────
{
  let s = pres.addSlide();
  s.addShape(pres.ShapeType.rect, { x: 0, y: 0, w: 10, h: 5.625, fill: { color: WHITE } });
  addHeader(s, "Definition & Epidemiology");

  // left column - definition box
  addBox(s, 0.25, 0.9, 5.9, 2.2);
  addPill(s, "DEFINITION", 0.25, 0.9, 5.9);
  s.addText([
    { text: "Fracture at the distal end of the radius, at its cortico-cancellous junction ", options: { color: DARK } },
    { text: "(~2 cm from the distal articular surface)", options: { color: ACCENT, italic: true } },
    { text: ", in adults, with typical displacement.", options: { color: DARK } }
  ], {
    x: 0.4, y: 1.22, w: 5.65, h: 1.7, fontSize: 13, valign: "top", margin: 4
  });

  // right column - epidemiology
  addBox(s, 6.4, 0.9, 3.35, 2.2);
  addPill(s, "EPIDEMIOLOGY", 6.4, 0.9, 3.35);
  s.addText([
    { text: "Most common fracture", options: { bold: true, color: ACCENT, breakLine: true } },
    { text: "in people above 40 years\n\n", options: { color: DARK, breakLine: true } },
    { text: "Particularly common", options: { bold: true, color: MED_BLUE, breakLine: true } },
    { text: "in women due to post-menopausal osteoporosis\n\n", options: { color: DARK, breakLine: true } },
    { text: "Mechanism:", options: { bold: true, color: MED_BLUE, breakLine: true } },
    { text: "Fall on an outstretched hand", options: { color: DARK } }
  ], { x: 6.5, y: 1.22, w: 3.1, h: 1.7, fontSize: 11, valign: "top", margin: 3 });

  // mnemonic / memory box
  s.addShape(pres.ShapeType.rect, { x: 0.25, y: 3.2, w: 9.5, h: 1.1, fill: { color: MED_BLUE }, line: { color: MED_BLUE } });
  s.addText("MEMORY AID: FOOSH", {
    x: 0.35, y: 3.22, w: 3, h: 0.3, fontSize: 10, bold: true, color: GOLD, margin: 0
  });
  s.addText([
    { text: "Fall On an OutStretched Hand", options: { bold: true, color: GOLD, breakLine: true } },
    { text: "The wrist is forced into dorsiflexion, the radius fails in compression at the corticocancellous junction", options: { color: WHITE } }
  ], { x: 0.35, y: 3.52, w: 9.2, h: 0.7, fontSize: 11, margin: 0 });

  s.addShape(pres.ShapeType.rect, { x: 0, y: 5.25, w: 10, h: 0.375, fill: { color: DARK } });
  s.addText("Maheshwari Essential Orthopaedics | Chapter 15", { x: 0.3, y: 5.25, w: 9.4, h: 0.375, fontSize: 9, color: SUBTEXT, align: "right", valign: "middle", margin: 0 });
}

// ── SLIDE 3: RELEVANT ANATOMY ──────────────────────────────────
{
  let s = pres.addSlide();
  s.addShape(pres.ShapeType.rect, { x: 0, y: 0, w: 10, h: 5.625, fill: { color: WHITE } });
  addHeader(s, "Relevant Anatomy");

  // left text
  addBox(s, 0.25, 0.85, 5.5, 3.5);
  addPill(s, "ANATOMY", 0.25, 0.85, 5.5);
  s.addText([
    { text: "Distal radius articulates with:", options: { bold: true, color: MED_BLUE, breakLine: true } },
    { text: "  • Carpal bones → radio-carpal joint\n", options: { color: DARK, breakLine: true } },
    { text: "  • Distal end of ulna → radio-ulnar joint\n\n", options: { color: DARK, breakLine: true } },
    { text: "Normal orientation of distal articular surface:", options: { bold: true, color: MED_BLUE, breakLine: true } },
    { text: "  • Faces ventrally and medially\n\n", options: { color: DARK, breakLine: true } },
    { text: "Radial styloid tip:", options: { bold: true, color: MED_BLUE, breakLine: true } },
    { text: "  • ~1 cm distal to the tip of ulnar styloid\n\n", options: { color: DARK, breakLine: true } },
    { text: "Fracture site:", options: { bold: true, color: ACCENT, breakLine: true } },
    { text: "  • Corticocancellous junction (~2 cm proximal to articular surface)", options: { color: DARK } }
  ], { x: 0.35, y: 1.17, w: 5.25, h: 3.1, fontSize: 12, valign: "top", margin: 3 });

  // right image panel - page 1 (contains anatomy diagrams fig 15.6)
  s.addShape(pres.ShapeType.rect, { x: 6.0, y: 0.85, w: 3.75, h: 3.5, fill: { color: LIGHT_BG }, line: { color: MED_BLUE, pt: 1 } });
  s.addImage({ data: page0, x: 6.0, y: 0.85, w: 3.75, h: 3.5, sizing: { type: "contain", w: 3.75, h: 3.5 } });
  s.addText("Fig. 15.5 & 15.6 - X-ray & Normal Anatomy\n(Maheshwari p.109)", {
    x: 6.0, y: 4.38, w: 3.75, h: 0.35, fontSize: 8, color: MED_BLUE, align: "center", italic: true
  });

  s.addShape(pres.ShapeType.rect, { x: 0, y: 5.25, w: 10, h: 0.375, fill: { color: DARK } });
  s.addText("Maheshwari Essential Orthopaedics | Chapter 15", { x: 0.3, y: 5.25, w: 9.4, h: 0.375, fontSize: 9, color: SUBTEXT, align: "right", valign: "middle", margin: 0 });
}

// ── SLIDE 4: PATHOANATOMY - DISPLACEMENTS ──────────────────────
{
  let s = pres.addSlide();
  s.addShape(pres.ShapeType.rect, { x: 0, y: 0, w: 10, h: 5.625, fill: { color: WHITE } });
  addHeader(s, "Pathoanatomy - Displacements");

  // 6 displacement boxes
  const disp = [
    { label: "1", title: "Impaction", desc: "Fragments driven together" },
    { label: "2", title: "Dorsal Displacement", desc: "Fragment shifts dorsally" },
    { label: "3", title: "Dorsal Tilt", desc: "Articular surface tilts dorsally" },
    { label: "4", title: "Lateral Displacement", desc: "Fragment shifts radially" },
    { label: "5", title: "Lateral Tilt", desc: "Articular surface tilts laterally" },
    { label: "6", title: "Supination", desc: "Distal fragment supinates" }
  ];

  disp.forEach((d, i) => {
    const col = i % 3;
    const row = Math.floor(i / 3);
    const x = 0.22 + col * 3.22;
    const y = 0.85 + row * 1.5;
    s.addShape(pres.ShapeType.rect, { x, y, w: 3.05, h: 1.3, fill: { color: i % 2 === 0 ? LIGHT_BG : "DDE8F5" }, line: { color: MED_BLUE, pt: 1 } });
    // number circle
    s.addShape(pres.ShapeType.ellipse, { x: x + 0.08, y: y + 0.08, w: 0.38, h: 0.38, fill: { color: ACCENT } });
    s.addText(d.label, { x: x + 0.08, y: y + 0.08, w: 0.38, h: 0.38, fontSize: 11, bold: true, color: WHITE, align: "center", valign: "middle", margin: 0 });
    s.addText(d.title, { x: x + 0.55, y: y + 0.1, w: 2.4, h: 0.38, fontSize: 13, bold: true, color: MED_BLUE, valign: "middle", margin: 0 });
    s.addText(d.desc, { x: x + 0.1, y: y + 0.55, w: 2.85, h: 0.65, fontSize: 11, color: DARK, margin: 3 });
  });

  // comminution note
  s.addShape(pres.ShapeType.rect, { x: 0.22, y: 3.92, w: 9.56, h: 0.8, fill: { color: MED_BLUE }, line: { color: MED_BLUE } });
  s.addText([
    { text: "Comminution: ", options: { bold: true, color: GOLD } },
    { text: "As displacement occurs, comminution of dorsal and lateral cortices + soft cancellous bone of distal fragment. Rarely, the whole distal fragment breaks into pieces.", options: { color: WHITE } }
  ], { x: 0.35, y: 3.92, w: 9.3, h: 0.8, fontSize: 11, valign: "middle", margin: 0 });

  s.addShape(pres.ShapeType.rect, { x: 0, y: 5.25, w: 10, h: 0.375, fill: { color: DARK } });
  s.addText("Maheshwari Essential Orthopaedics | Chapter 15", { x: 0.3, y: 5.25, w: 9.4, h: 0.375, fontSize: 9, color: SUBTEXT, align: "right", valign: "middle", margin: 0 });
}

// ── SLIDE 5: DISPLACEMENT DIAGRAMS (Fig 15.7) ─────────────────
{
  let s = pres.addSlide();
  s.addShape(pres.ShapeType.rect, { x: 0, y: 0, w: 10, h: 5.625, fill: { color: DARK } });
  addHeader(s, "Displacements in Colles' Fracture - Fig. 15.7");

  s.addText("AP View Displacements", {
    x: 0.5, y: 0.8, w: 4, h: 0.35, fontSize: 13, bold: true, color: GOLD, align: "center"
  });
  s.addText([
    { text: "• Proximal shift (impaction)\n", options: { color: WHITE, breakLine: true } },
    { text: "• Radial shift\n", options: { color: WHITE, breakLine: true } },
    { text: "• Radial tilt", options: { color: WHITE } }
  ], { x: 0.5, y: 1.2, w: 4, h: 1.0, fontSize: 13, margin: 5 });

  s.addText("Lateral View Displacements", {
    x: 5.5, y: 0.8, w: 4, h: 0.35, fontSize: 13, bold: true, color: GOLD, align: "center"
  });
  s.addText([
    { text: "• Proximal shift\n", options: { color: WHITE, breakLine: true } },
    { text: "• Dorsal shift\n", options: { color: WHITE, breakLine: true } },
    { text: "• Dorsal tilt", options: { color: WHITE } }
  ], { x: 5.5, y: 1.2, w: 4, h: 1.0, fontSize: 13, margin: 5 });

  // Book page image with the displacement diagrams
  s.addImage({ data: page0, x: 0.3, y: 2.2, w: 9.4, h: 3.0, sizing: { type: "contain", w: 9.4, h: 3.0 } });
  s.addText("Source: Maheshwari Essential Orthopaedics, Fig. 15.7 (p.109)", {
    x: 0, y: 5.25, w: 10, h: 0.375, fontSize: 9, color: SUBTEXT, align: "center", valign: "middle"
  });
}

// ── SLIDE 6: ASSOCIATED INJURIES ──────────────────────────────
{
  let s = pres.addSlide();
  s.addShape(pres.ShapeType.rect, { x: 0, y: 0, w: 10, h: 5.625, fill: { color: WHITE } });
  addHeader(s, "Associated Injuries");

  const injuries = [
    { icon: "①", title: "Fracture of styloid process of ulna", color: ACCENT },
    { icon: "②", title: "Rupture of ulnar collateral ligament", color: MED_BLUE },
    { icon: "③", title: "Rupture of triangular cartilage of ulna", color: ACCENT },
    { icon: "④", title: "Rupture of interosseous radio-ulnar ligament", desc: "→ causing radio-ulnar subluxation", color: MED_BLUE }
  ];

  injuries.forEach((inj, i) => {
    const y = 0.95 + i * 0.98;
    s.addShape(pres.ShapeType.rect, { x: 0.3, y, w: 9.4, h: 0.82, fill: { color: i % 2 === 0 ? LIGHT_BG : "DDE8F5" }, line: { color: inj.color, pt: 1.5 } });
    s.addText(inj.icon, { x: 0.4, y, w: 0.5, h: 0.82, fontSize: 20, bold: true, color: inj.color, valign: "middle", align: "center", margin: 0 });
    s.addText(inj.title, { x: 1.05, y: y + 0.04, w: 8.5, h: 0.42, fontSize: 14, bold: true, color: DARK, valign: "middle", margin: 0 });
    if (inj.desc) {
      s.addText(inj.desc, { x: 1.05, y: y + 0.44, w: 8.5, h: 0.3, fontSize: 11, color: ACCENT, italic: true, margin: 0 });
    }
  });

  s.addShape(pres.ShapeType.rect, { x: 0, y: 5.25, w: 10, h: 0.375, fill: { color: DARK } });
  s.addText("Maheshwari Essential Orthopaedics | Chapter 15", { x: 0.3, y: 5.25, w: 9.4, h: 0.375, fontSize: 9, color: SUBTEXT, align: "right", valign: "middle", margin: 0 });
}

// ── SLIDE 7: CLINICAL FEATURES & DINNER FORK ──────────────────
{
  let s = pres.addSlide();
  s.addShape(pres.ShapeType.rect, { x: 0, y: 0, w: 10, h: 5.625, fill: { color: WHITE } });
  addHeader(s, "Diagnosis - Clinical Features");

  // left column
  addBox(s, 0.25, 0.85, 5.4, 3.0);
  addPill(s, "CLINICAL FEATURES", 0.25, 0.85, 5.4);
  s.addText([
    { text: "Symptoms:\n", options: { bold: true, color: MED_BLUE, breakLine: true } },
    { text: "  • Pain\n  • Swelling\n  • Deformity of the wrist\n\n", options: { color: DARK, breakLine: true } },
    { text: "Signs:\n", options: { bold: true, color: MED_BLUE, breakLine: true } },
    { text: "  • Tenderness\n  • Irregularity of lower end of radius\n  • 'Dinner fork deformity' (Fig. 15.8)\n\n", options: { color: DARK, breakLine: true } },
    { text: "Radial styloid:", options: { bold: true, color: MED_BLUE, breakLine: true } },
    { text: "  Comes to same level or higher than ulnar styloid", options: { color: DARK } }
  ], { x: 0.35, y: 1.17, w: 5.2, h: 2.6, fontSize: 12, valign: "top", margin: 3 });

  // right - dinner fork highlight
  s.addShape(pres.ShapeType.rect, { x: 5.9, y: 0.85, w: 3.85, h: 3.0, fill: { color: MED_BLUE }, line: { color: MED_BLUE } });
  s.addText("'DINNER FORK'\nDEFORMITY", {
    x: 5.9, y: 0.95, w: 3.85, h: 0.9, fontSize: 16, bold: true, color: GOLD, align: "center", valign: "middle", margin: 0
  });
  s.addText("Dorsal hump + volar depression of wrist mimics the curve of a dinner fork", {
    x: 6.0, y: 1.9, w: 3.65, h: 0.8, fontSize: 11, color: WHITE, align: "center", italic: true, margin: 5
  });
  s.addText("Fig. 15.8 — Maheshwari p.109", {
    x: 5.9, y: 3.35, w: 3.85, h: 0.35, fontSize: 9, color: SUBTEXT, align: "center", italic: true
  });
  // embed page that has dinner fork figure
  s.addImage({ data: page0, x: 6.0, y: 2.72, w: 3.65, h: 0.55, sizing: { type: "contain", w: 3.65, h: 0.55 } });

  s.addShape(pres.ShapeType.rect, { x: 0, y: 5.25, w: 10, h: 0.375, fill: { color: DARK } });
  s.addText("Maheshwari Essential Orthopaedics | Chapter 15", { x: 0.3, y: 5.25, w: 9.4, h: 0.375, fontSize: 9, color: SUBTEXT, align: "right", valign: "middle", margin: 0 });
}

// ── SLIDE 8: RADIOLOGICAL FEATURES ────────────────────────────
{
  let s = pres.addSlide();
  s.addShape(pres.ShapeType.rect, { x: 0, y: 0, w: 10, h: 5.625, fill: { color: WHITE } });
  addHeader(s, "Diagnosis - Radiological Features");

  // xray image
  s.addImage({ data: page0, x: 0.25, y: 0.85, w: 4.5, h: 3.9, sizing: { type: "contain", w: 4.5, h: 3.9 } });
  s.addText("Fig. 15.5 - X-ray wrist AP & Lateral\nColles' fracture (Maheshwari p.109)", {
    x: 0.25, y: 4.78, w: 4.5, h: 0.35, fontSize: 8, color: MED_BLUE, align: "center", italic: true
  });

  // right column
  addBox(s, 5.0, 0.85, 4.75, 1.6);
  addPill(s, "DORSAL TILT - Most Characteristic", 5.0, 0.85, 4.75);
  s.addText("On lateral X-ray: distal articular surface faces dorsally (normally faces ventrally). If neutral or dorsal → dorsal tilt confirmed.", {
    x: 5.1, y: 1.17, w: 4.55, h: 1.2, fontSize: 11, color: DARK, margin: 3
  });

  addBox(s, 5.0, 2.6, 4.75, 1.1);
  addPill(s, "LATERAL TILT", 5.0, 2.6, 4.75);
  s.addText("On AP X-ray: articular surface normally faces medially. If lateral or horizontal → lateral tilt confirmed.", {
    x: 5.1, y: 2.92, w: 4.55, h: 0.72, fontSize: 11, color: DARK, margin: 3
  });

  s.addShape(pres.ShapeType.rect, { x: 5.0, y: 3.82, w: 4.75, h: 0.82, fill: { color: ACCENT }, line: { color: ACCENT } });
  s.addText([
    { text: "Differentiate from: ", options: { bold: true, color: WHITE } },
    { text: "Smith's fracture & Barton's fracture", options: { color: GOLD } },
    { text: " — by looking at the displacement pattern", options: { color: WHITE } }
  ], { x: 5.1, y: 3.82, w: 4.55, h: 0.82, fontSize: 11, valign: "middle", margin: 5 });

  s.addShape(pres.ShapeType.rect, { x: 0, y: 5.25, w: 10, h: 0.375, fill: { color: DARK } });
  s.addText("Maheshwari Essential Orthopaedics | Chapter 15", { x: 0.3, y: 5.25, w: 9.4, h: 0.375, fontSize: 9, color: SUBTEXT, align: "right", valign: "middle", margin: 0 });
}

// ── SLIDE 9: TREATMENT OVERVIEW ────────────────────────────────
{
  let s = pres.addSlide();
  s.addShape(pres.ShapeType.rect, { x: 0, y: 0, w: 10, h: 5.625, fill: { color: WHITE } });
  addHeader(s, "Treatment Overview");

  // undisplaced
  s.addShape(pres.ShapeType.rect, { x: 0.25, y: 0.85, w: 4.6, h: 1.5, fill: { color: LIGHT_BG }, line: { color: MED_BLUE, pt: 1 } });
  s.addText("UNDISPLACED FRACTURE", { x: 0.25, y: 0.85, w: 4.6, h: 0.28, fontSize: 9, bold: true, color: WHITE, align: "center", valign: "middle", margin: 0, fill: { color: MED_BLUE } });
  s.addText("Immobilisation in below-elbow plaster cast for 6 weeks", {
    x: 0.35, y: 1.17, w: 4.4, h: 1.1, fontSize: 13, color: DARK, valign: "middle", margin: 5
  });

  // displaced
  s.addShape(pres.ShapeType.rect, { x: 5.15, y: 0.85, w: 4.6, h: 1.5, fill: { color: LIGHT_BG }, line: { color: ACCENT, pt: 1 } });
  s.addText("DISPLACED FRACTURE", { x: 5.15, y: 0.85, w: 4.6, h: 0.28, fontSize: 9, bold: true, color: WHITE, align: "center", valign: "middle", margin: 0, fill: { color: ACCENT } });
  s.addText("Manipulative reduction + immobilisation in Colles' cast (Fig. 15.9)", {
    x: 5.25, y: 1.17, w: 4.4, h: 1.1, fontSize: 13, color: DARK, valign: "middle", margin: 5
  });

  // cast image
  s.addImage({ data: page1, x: 0.25, y: 2.55, w: 4.6, h: 2.35, sizing: { type: "contain", w: 4.6, h: 2.35 } });
  s.addText("Fig. 15.9 - Colles' cast: (A) Palmar flexion (B) Ulnar deviation", {
    x: 0.25, y: 4.92, w: 4.6, h: 0.25, fontSize: 8, color: MED_BLUE, align: "center", italic: true
  });

  // trend note
  s.addShape(pres.ShapeType.rect, { x: 5.15, y: 2.55, w: 4.6, h: 2.35, fill: { color: MED_BLUE }, line: { color: MED_BLUE } });
  s.addText("CURRENT TREND", { x: 5.15, y: 2.55, w: 4.6, h: 0.3, fontSize: 10, bold: true, color: GOLD, align: "center", valign: "middle", margin: 0 });
  s.addText([
    { text: "Treatment is essentially ", options: { color: WHITE } },
    { text: "conservative", options: { bold: true, color: GOLD } },
    { text: ".\n\nOperative methods are being used increasingly due to:\n", options: { color: WHITE, breakLine: true } },
    { text: "  • Improvement in surgical techniques\n", options: { color: SUBTEXT, breakLine: true } },
    { text: "  • More functional demands of patients", options: { color: SUBTEXT } }
  ], { x: 5.25, y: 2.9, w: 4.4, h: 1.85, fontSize: 12, valign: "top", margin: 0 });

  s.addShape(pres.ShapeType.rect, { x: 0, y: 5.25, w: 10, h: 0.375, fill: { color: DARK } });
  s.addText("Maheshwari Essential Orthopaedics | Chapter 15", { x: 0.3, y: 5.25, w: 9.4, h: 0.375, fontSize: 9, color: SUBTEXT, align: "right", valign: "middle", margin: 0 });
}

// ── SLIDE 10: CONSERVATIVE TREATMENT (Manipulation) ───────────
{
  let s = pres.addSlide();
  s.addShape(pres.ShapeType.rect, { x: 0, y: 0, w: 10, h: 5.625, fill: { color: WHITE } });
  addHeader(s, "Conservative Treatment - Closed Manipulation (Fig. 15.10)");

  // steps
  const steps = [
    { n: "1", t: "Anaesthesia", d: "General or regional anaesthesia to relax forearm muscles" },
    { n: "2", t: "Grasp", d: "Surgeon grasps injured hand as if 'shaking hands'" },
    { n: "3", t: "Disimpaction", d: "Firm longitudinal traction against counter-traction by assistant above flexed elbow" },
    { n: "4", t: "Correction", d: "Surgeon presses distal fragment into palmar flexion + ulnar deviation with thumb" },
    { n: "5", t: "Final position", d: "Hand drawn into pronation, palmar flexion, ulnar deviation" },
    { n: "6", t: "Cast application", d: "Colles' cast: below elbow to metacarpal heads, wrist in palmar flexion + ulnar deviation" }
  ];

  steps.forEach((st, i) => {
    const col = i % 2;
    const row = Math.floor(i / 2);
    const x = 0.25 + col * 5.0;
    const y = 0.88 + row * 1.05;
    s.addShape(pres.ShapeType.rect, { x, y, w: 4.7, h: 0.9, fill: { color: LIGHT_BG }, line: { color: MED_BLUE, pt: 1 } });
    s.addShape(pres.ShapeType.rect, { x, y, w: 0.42, h: 0.9, fill: { color: ACCENT }, line: { color: ACCENT } });
    s.addText(st.n, { x, y, w: 0.42, h: 0.9, fontSize: 14, bold: true, color: WHITE, align: "center", valign: "middle", margin: 0 });
    s.addText(st.t, { x: x + 0.5, y: y + 0.04, w: 4.1, h: 0.32, fontSize: 12, bold: true, color: MED_BLUE, valign: "middle", margin: 0 });
    s.addText(st.d, { x: x + 0.5, y: y + 0.4, w: 4.1, h: 0.42, fontSize: 10, color: DARK, margin: 0 });
  });

  // manipulation image
  s.addImage({ data: page1, x: 0.25, y: 4.08, w: 9.5, h: 1.05, sizing: { type: "contain", w: 9.5, h: 1.05 } });
  s.addText("Fig. 15.10 - Technique of reduction of Colles' fracture (Maheshwari p.110)", {
    x: 0, y: 5.25, w: 10, h: 0.375, fontSize: 9, color: SUBTEXT, align: "center", valign: "middle"
  });
}

// ── SLIDE 11: POST-REDUCTION & FOLLOW-UP ──────────────────────
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  let s = pres.addSlide();
  s.addShape(pres.ShapeType.rect, { x: 0, y: 0, w: 10, h: 5.625, fill: { color: WHITE } });
  addHeader(s, "Post-Reduction Care & Follow-up");

  const items = [
    { icon: "📷", label: "X-ray check", text: "Check X-ray after reduction: confirm dorsal tilt corrected (articular surface must face ventrally)" },
    { icon: "✋", label: "Finger mobilisation", text: "Patient encouraged to move fingers as soon as plaster dries" },
    { icon: "💪", label: "Shoulder & elbow", text: "Shoulder and elbow joints moved through full range several times a day" },
    { icon: "📅", label: "Weekly X-rays", text: "Check X-rays every week for first 3 weeks to detect re-displacement" },
    { icon: "🔧", label: "Plaster removal", text: "Plaster removed after 6 weeks; wrist & finger mobilising + muscle strengthening exercises started" }
  ];

  items.forEach((item, i) => {
    const y = 0.9 + i * 0.82;
    s.addShape(pres.ShapeType.rect, { x: 0.25, y, w: 9.5, h: 0.7, fill: { color: i % 2 === 0 ? LIGHT_BG : "DDE8F5" }, line: { color: MED_BLUE, pt: 0.5 } });
    s.addShape(pres.ShapeType.rect, { x: 0.25, y, w: 1.3, h: 0.7, fill: { color: MED_BLUE } });
    s.addText(item.label, { x: 0.25, y, w: 1.3, h: 0.7, fontSize: 9, bold: true, color: WHITE, align: "center", valign: "middle", margin: 2 });
    s.addText(item.text, { x: 1.65, y, w: 8.0, h: 0.7, fontSize: 12, color: DARK, valign: "middle", margin: 4 });
  });

  s.addShape(pres.ShapeType.rect, { x: 0, y: 5.25, w: 10, h: 0.375, fill: { color: DARK } });
  s.addText("Maheshwari Essential Orthopaedics | Chapter 15", { x: 0.3, y: 5.25, w: 9.4, h: 0.375, fontSize: 9, color: SUBTEXT, align: "right", valign: "middle", margin: 0 });
}

// ── SLIDE 12: OPERATIVE TREATMENT ─────────────────────────────
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  let s = pres.addSlide();
  s.addShape(pres.ShapeType.rect, { x: 0, y: 0, w: 10, h: 5.625, fill: { color: WHITE } });
  addHeader(s, "Operative Treatment (Fig. 15.11)");

  const methods = [
    {
      label: "i",
      title: "Plating",
      desc: "Opened from front, reduced under direct vision, fixed with plate. Anatomically contoured locking compression plates (LCP) used.",
      fig: "Fig. 15.11B"
    },
    {
      label: "ii",
      title: "Percutaneous Pinning",
      desc: "Reduced under anaesthesia + image intensifier. Fixed with 2+ K-wires (2mm) percutaneously. Immobilized in plaster for 6 weeks. Principle: Ligamentotaxis.",
      fig: "Fig. 15.11A"
    },
    {
      label: "iii",
      title: "External Fixation",
      desc: "External fixator keeps fracture 'distracted'. Stretched ligaments + periosteum hold comminuted fragments. Principle: Ligamentotaxis.",
      fig: "Fig. 15.11C"
    }
  ];

  methods.forEach((m, i) => {
    const y = 0.85 + i * 1.2;
    s.addShape(pres.ShapeType.rect, { x: 0.25, y, w: 5.5, h: 1.05, fill: { color: i % 2 === 0 ? LIGHT_BG : "DDE8F5" }, line: { color: MED_BLUE, pt: 1 } });
    s.addShape(pres.ShapeType.rect, { x: 0.25, y, w: 0.5, h: 1.05, fill: { color: ACCENT } });
    s.addText(m.label, { x: 0.25, y, w: 0.5, h: 1.05, fontSize: 14, bold: true, color: WHITE, align: "center", valign: "middle", margin: 0 });
    s.addText(m.title + "  " + m.fig, { x: 0.85, y: y + 0.04, w: 4.8, h: 0.3, fontSize: 13, bold: true, color: MED_BLUE, valign: "middle", margin: 0 });
    s.addText(m.desc, { x: 0.85, y: y + 0.37, w: 4.8, h: 0.62, fontSize: 10, color: DARK, margin: 0 });
  });

  // indications box
  s.addShape(pres.ShapeType.rect, { x: 6.0, y: 0.85, w: 3.75, h: 1.6, fill: { color: DARK }, line: { color: GOLD, pt: 1 } });
  s.addText("INDICATIONS FOR SURGERY", { x: 6.0, y: 0.85, w: 3.75, h: 0.3, fontSize: 9, bold: true, color: GOLD, align: "center", valign: "middle", margin: 0 });
  s.addText([
    { text: "• Younger patients\n", options: { color: WHITE, breakLine: true } },
    { text: "• Badly displaced fracture\n", options: { color: WHITE, breakLine: true } },
    { text: "• Intra-articular extension\n", options: { color: WHITE, breakLine: true } },
    { text: "• Elderly with high functional demand", options: { color: WHITE } }
  ], { x: 6.1, y: 1.18, w: 3.55, h: 1.2, fontSize: 11, margin: 0 });

  // xray image
  s.addImage({ data: page2, x: 6.0, y: 2.6, w: 3.75, h: 2.3, sizing: { type: "contain", w: 3.75, h: 2.3 } });
  s.addText("Fig. 15.11 - Fixation methods (A) K-wire (B) Plate (C) External fixator\nMaheshwari p.111", {
    x: 6.0, y: 4.93, w: 3.75, h: 0.3, fontSize: 8, color: MED_BLUE, align: "center", italic: true
  });

  s.addShape(pres.ShapeType.rect, { x: 0, y: 5.25, w: 10, h: 0.375, fill: { color: DARK } });
  s.addText("Maheshwari Essential Orthopaedics | Chapter 15", { x: 0.3, y: 5.25, w: 9.4, h: 0.375, fontSize: 9, color: SUBTEXT, align: "right", valign: "middle", margin: 0 });
}

// ── SLIDE 13: COMPLICATIONS ────────────────────────────────────
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  let s = pres.addSlide();
  s.addShape(pres.ShapeType.rect, { x: 0, y: 0, w: 10, h: 5.625, fill: { color: WHITE } });
  addHeader(s, "Complications");

  s.addText("Most patients progress rapidly to full functional recovery. Common complications:", {
    x: 0.25, y: 0.75, w: 9.5, h: 0.35, fontSize: 11, color: DARK, italic: true
  });

  const comps = [
    { n: "1", title: "Stiffness of Joints", color: ACCENT, desc: "Most common. Fingers, shoulder, wrist, elbow. Prevention: active movement of joints not in plaster." },
    { n: "2", title: "Malunion", color: MED_BLUE, desc: "Always unites but malunion common. Cause: re-displacement in plaster → dinner fork deformity. Rx: osteotomy if severe." },
    { n: "3", title: "Subluxation of Inferior Radio-Ulnar Joint", color: ACCENT, desc: "Ulnar head prominent. Wrist movement + forearm rotation restricted. Rx: Darrach's resection." },
    { n: "4", title: "Carpal Tunnel Syndrome", color: MED_BLUE, desc: "Median nerve compressed by fracture callus. Rx: Decompression of carpal tunnel." },
    { n: "5", title: "Sudeck's Osteodystrophy", color: ACCENT, desc: "Colles' = most common cause in upper limb. Pain, stiffness, swelling, stretched glossy skin. Rx: intensive physiotherapy." },
    { n: "6", title: "Rupture of Extensor Pollicis Longus", color: MED_BLUE, desc: "Very rare, delayed. Ischaemia or friction over malunion. Rx: tendon transfer (ext. indicis → ext. pollicis longus)." }
  ];

  comps.forEach((c, i) => {
    const col = i % 2;
    const row = Math.floor(i / 2);
    const x = 0.22 + col * 4.95;
    const y = 1.18 + row * 1.25;
    s.addShape(pres.ShapeType.rect, { x, y, w: 4.7, h: 1.1, fill: { color: LIGHT_BG }, line: { color: c.color, pt: 1.5 } });
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    s.addText(c.n, { x, y, w: 0.4, h: 1.1, fontSize: 13, bold: true, color: WHITE, align: "center", valign: "middle", margin: 0 });
    s.addText(c.title, { x: x + 0.5, y: y + 0.04, w: 4.1, h: 0.34, fontSize: 11, bold: true, color: c.color, valign: "middle", margin: 0 });
    s.addText(c.desc, { x: x + 0.5, y: y + 0.42, w: 4.1, h: 0.62, fontSize: 9.5, color: DARK, margin: 0 });
  });

  s.addShape(pres.ShapeType.rect, { x: 0, y: 5.25, w: 10, h: 0.375, fill: { color: DARK } });
  s.addText("Maheshwari Essential Orthopaedics | Chapter 15", { x: 0.3, y: 5.25, w: 9.4, h: 0.375, fontSize: 9, color: SUBTEXT, align: "right", valign: "middle", margin: 0 });
}

// ── SLIDE 14: BOOK PAGES REFERENCE (p.109) ───────────────────
{
  let s = pres.addSlide();
  s.addShape(pres.ShapeType.rect, { x: 0, y: 0, w: 10, h: 5.625, fill: { color: DARK } });
  addHeader(s, "Reference - Maheshwari p.109 (Definition, Anatomy, Displacements, Diagnosis)");
  s.addImage({ data: page0, x: 0.4, y: 0.8, w: 9.2, h: 4.35, sizing: { type: "contain", w: 9.2, h: 4.35 } });
}

// ── SLIDE 15: BOOK PAGES REFERENCE (p.110) ───────────────────
{
  let s = pres.addSlide();
  s.addShape(pres.ShapeType.rect, { x: 0, y: 0, w: 10, h: 5.625, fill: { color: DARK } });
  addHeader(s, "Reference - Maheshwari p.110 (Treatment, Manipulation, Colles' Cast)");
  s.addImage({ data: page1, x: 0.4, y: 0.8, w: 9.2, h: 4.35, sizing: { type: "contain", w: 9.2, h: 4.35 } });
}

// ── SLIDE 16: BOOK PAGES REFERENCE (p.111) ───────────────────
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  let s = pres.addSlide();
  s.addShape(pres.ShapeType.rect, { x: 0, y: 0, w: 10, h: 5.625, fill: { color: DARK } });
  addHeader(s, "Reference - Maheshwari p.111 (Operative Treatment, Complications)");
  s.addImage({ data: page2, x: 0.4, y: 0.8, w: 9.2, h: 4.35, sizing: { type: "contain", w: 9.2, h: 4.35 } });
}

// ── SLIDE 17: SUMMARY / THANK YOU ─────────────────────────────
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  s.addShape(pres.ShapeType.rect, { x: 0, y: 0, w: 0.18, h: 5.625, fill: { color: ACCENT } });
  s.addShape(pres.ShapeType.rect, { x: 0, y: 2.45, w: 10, h: 0.07, fill: { color: ACCENT } });

  s.addText("SUMMARY", { x: 0.5, y: 0.35, w: 9, h: 0.45, fontSize: 26, bold: true, color: GOLD, align: "center", charSpacing: 6 });

  const summaryPoints = [
    "Fracture at corticocancellous junction ~2 cm from articular surface",
    "Most common: age >40, women, post-menopausal osteoporosis, FOOSH",
    "Displacements: impaction, dorsal shift/tilt, lateral shift/tilt, supination",
    "Diagnosis: dinner fork deformity; dorsal tilt on lateral X-ray is hallmark",
    "Treatment: conservative (manipulative reduction + Colles' cast 6 weeks)",
    "Operative: plating, K-wire fixation, external fixation (ligamentotaxis)",
    "Complications: stiffness, malunion, radio-ulnar subluxation, CTS, Sudeck's, EPL rupture"
  ];

  summaryPoints.forEach((pt, i) => {
    s.addText("• " + pt, {
      x: 0.5, y: 0.9 + i * 0.48, w: 9, h: 0.42, fontSize: 11.5, color: i % 2 === 0 ? WHITE : SUBTEXT, margin: 0
    });
  });

  s.addShape(pres.ShapeType.rect, { x: 0, y: 5.25, w: 10, h: 0.375, fill: { color: MED_BLUE } });
  s.addText("Source: Essentials of Orthopaedics - Maheshwari | Chapter 15 - Injuries of the Forearm and Wrist", {
    x: 0.3, y: 5.25, w: 9.4, h: 0.375, fontSize: 9, color: SUBTEXT, align: "center", valign: "middle", margin: 0
  });
}

pres.writeFile({ fileName: "/home/daytona/workspace/colles-fracture-ppt/Colles_Fracture_Maheshwari.pptx" })
  .then(() => console.log("Done! File saved."))
  .catch(e => console.error("Error:", e));

const pptxgen = require("pptxgenjs");
const fs = require("fs");

function loadImg(name) {
  try { return fs.readFileSync(`/home/daytona/workspace/colles-fracture-ppt/${name}.b64`, 'utf8'); }
  catch(e) { return null; }
}

// Maheshwari clean figures
const imgCast       = loadImg('jaypee_113_1');  // Fig 15.9 Colles cast (a) palmar flexion (b) ulnar dev
const imgManip      = loadImg('jaypee1');        // Fig 15.10 Manipulation technique
const imgDisplace   = loadImg('jaypee_114_1');   // Fig 15.7 Displacements diagram
// Clean X-rays from radiopaedia/orthobullets
const imgXray1      = loadImg('xray1');          // Radiopaedia Colles xray
const imgXray3      = loadImg('xray3');          // Orthobullets Colles xray
const imgXray4      = loadImg('xray4');          // Radiogyan AP+lateral
const imgIllus      = loadImg('colles_illus');   // Orthobullets illustration

let pres = new pptxgen();
pres.layout = 'LAYOUT_16x9';
pres.title = "Colles' Fracture – Maheshwari";

// ── PALETTE ───────────────────────────────────────────────────
const DARK     = "1A2B3C";
const MED_BLUE = "2C4A6E";
const ACCENT   = "C0392B";
const LIGHT_BG = "EAF0F6";
const WHITE    = "FFFFFF";
const GOLD     = "D4A017";
const SUBTEXT  = "B0C4D8";
const LIGHT2   = "DDE8F5";

function hdr(s, title) {
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  s.addText(title, { x:0.3, y:0, w:9.4, h:0.68, fontSize:19, bold:true, color:WHITE, valign:"middle", margin:0 });
}
function pill(s, text, x, y, w, color) {
  color = color || MED_BLUE;
  s.addShape(pres.ShapeType.rect, { x, y, w, h:0.26, fill:{color}, line:{color} });
  s.addText(text, { x, y, w, h:0.26, fontSize:8.5, bold:true, color:GOLD, align:"center", valign:"middle", margin:0 });
}
function box(s, x, y, w, h, color) {
  color = color || LIGHT_BG;
  s.addShape(pres.ShapeType.rect, { x, y, w, h, fill:{color}, line:{color:MED_BLUE, pt:1} });
}
function footer(s) {
  s.addShape(pres.ShapeType.rect, { x:0, y:5.25, w:10, h:0.375, fill:{color:DARK} });
  s.addText("Essentials of Orthopaedics – Maheshwari | Chapter 15", {
    x:0.3, y:5.25, w:9.4, h:0.375, fontSize:9, color:SUBTEXT, align:"right", valign:"middle", margin:0
  });
}

// ════════════════════════════════════════════════════════════════
// SLIDE 1 — TITLE
// ════════════════════════════════════════════════════════════════
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  s.addShape(pres.ShapeType.rect, { x:0, y:0, w:10, h:5.625, fill:{color:DARK} });
  s.addShape(pres.ShapeType.rect, { x:0, y:0, w:0.2, h:5.625, fill:{color:ACCENT} });
  s.addShape(pres.ShapeType.rect, { x:0, y:2.05, w:10, h:0.07, fill:{color:ACCENT} });

  s.addText("COLLES' FRACTURE", {
    x:0.5, y:0.9, w:9, h:0.95,
    fontSize:44, bold:true, color:WHITE, align:"center", charSpacing:4
  });
  s.addText("Fracture of the Distal Radius", {
    x:0.5, y:2.18, w:9, h:0.48,
    fontSize:20, color:GOLD, align:"center", italic:true
  });
  s.addText("Chapter 15 – Injuries of the Forearm and Wrist", {
    x:0.5, y:2.78, w:9, h:0.35, fontSize:13, color:SUBTEXT, align:"center"
  });
  s.addText("Essentials of Orthopaedics  |  Maheshwari", {
    x:0.5, y:3.18, w:9, h:0.32, fontSize:12, color:SUBTEXT, align:"center", italic:true
  });

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    x:0.3, y:5.25, w:9.4, h:0.375, fontSize:9, color:SUBTEXT, align:"center", valign:"middle", margin:0
  });
}

// ════════════════════════════════════════════════════════════════
// SLIDE 2 — DEFINITION & EPIDEMIOLOGY
// ════════════════════════════════════════════════════════════════
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  hdr(s, "Definition & Epidemiology");

  box(s, 0.25, 0.82, 5.9, 2.25);
  pill(s, "DEFINITION", 0.25, 0.82, 5.9);
  s.addText([
    { text:"Fracture at the distal end of the radius,\nat its cortico-cancellous junction\n", options:{bold:true, color:DARK} },
    { text:"(~2 cm from the distal articular surface)\n\n", options:{color:ACCENT, italic:true} },
    { text:"In adults, with typical displacement.\n", options:{color:DARK} },
    { text:"(Fig. 15.5 – Maheshwari)", options:{color:MED_BLUE, italic:true, fontSize:10} }
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  pill(s, "EPIDEMIOLOGY", 6.4, 0.82, 3.35);
  s.addText([
    { text:"Most common fracture\n", options:{bold:true, color:ACCENT, breakLine:true} },
    { text:"above 40 years of age\n\n", options:{color:DARK, breakLine:true} },
    { text:"Particularly common in women\n", options:{bold:true, color:MED_BLUE, breakLine:true} },
    { text:"Post-menopausal osteoporosis\n\n", options:{color:DARK, breakLine:true} },
    { text:"Mechanism:\n", options:{bold:true, color:MED_BLUE, breakLine:true} },
    { text:"Fall on outstretched hand", options:{color:DARK} }
  ], { x:6.5, y:1.12, w:3.1, h:1.85, fontSize:11.5, valign:"top", margin:3 });

  // FOOSH mnemonic
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  s.addText([
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    { text:"Fall On an OutStretched Hand", options:{bold:true, color:WHITE, fontSize:14} }
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  s.addText("The wrist is forced into dorsiflexion → radius fails in compression at the corticocancellous junction", {
    x:0.4, y:3.65, w:9.2, h:0.52, fontSize:12, color:SUBTEXT, margin:0
  });

  footer(s);
}

// ════════════════════════════════════════════════════════════════
// SLIDE 3 — RELEVANT ANATOMY
// ════════════════════════════════════════════════════════════════
{
  let s = pres.addSlide();
  s.addShape(pres.ShapeType.rect, { x:0, y:0, w:10, h:5.625, fill:{color:WHITE} });
  hdr(s, "Relevant Anatomy");

  box(s, 0.25, 0.82, 5.55, 4.3);
  pill(s, "ANATOMY (Maheshwari)", 0.25, 0.82, 5.55);
  s.addText([
    { text:"Distal radius articulates with:\n", options:{bold:true, color:MED_BLUE, breakLine:true} },
    { text:"  • Carpal bones  →  radio-carpal joint\n", options:{color:DARK, breakLine:true} },
    { text:"  • Distal ulna  →  radio-ulnar joint\n\n", options:{color:DARK, breakLine:true} },
    { text:"Normal orientation of articular surface:\n", options:{bold:true, color:MED_BLUE, breakLine:true} },
    { text:"  • Faces ventrally and medially (Fig. 15.6)\n\n", options:{color:DARK, breakLine:true} },
    { text:"Radial styloid tip:\n", options:{bold:true, color:MED_BLUE, breakLine:true} },
    { text:"  • ~1 cm distal to tip of ulnar styloid\n\n", options:{color:DARK, breakLine:true} },
    { text:"Fracture site:\n", options:{bold:true, color:ACCENT, breakLine:true} },
    { text:"  • Corticocancellous junction\n", options:{color:DARK, breakLine:true} },
    { text:"  • ~2 cm proximal to articular surface\n\n", options:{color:DARK, breakLine:true} },
    { text:"After fracture:\n", options:{bold:true, color:ACCENT, breakLine:true} },
    { text:"  • Articular surface tilts dorsally\n", options:{color:DARK, breakLine:true} },
    { text:"  • Radial styloid rises to level of ulnar styloid", options:{color:DARK} }
  ], { x:0.38, y:1.12, w:5.3, h:3.9, fontSize:12, valign:"top", margin:3 });

  // X-ray image
  if(imgXray4) {
    s.addImage({ data:imgXray4, x:6.0, y:0.82, w:3.75, h:3.0, sizing:{type:"contain",w:3.75,h:3.0} });
    s.addText("X-ray: AP & Lateral views – Colles' fracture\n(Radiopaedia)", {
      x:6.0, y:3.85, w:3.75, h:0.4, fontSize:8.5, color:MED_BLUE, align:"center", italic:true
    });
  }
  if(imgXray1) {
    s.addImage({ data:imgXray1, x:6.0, y:4.28, w:3.75, h:0.85, sizing:{type:"contain",w:3.75,h:0.85} });
  }

  footer(s);
}

// ════════════════════════════════════════════════════════════════
// SLIDE 4 — PATHOANATOMY: 6 DISPLACEMENTS
// ════════════════════════════════════════════════════════════════
{
  let s = pres.addSlide();
  s.addShape(pres.ShapeType.rect, { x:0, y:0, w:10, h:5.625, fill:{color:WHITE} });
  hdr(s, "Pathoanatomy – Displacements (Fig. 15.7)");

  const disps = [
    { n:"1", t:"Impaction",            d:"Fragments driven together at fracture site" },
    { n:"2", t:"Dorsal Displacement",  d:"Distal fragment shifts dorsally" },
    { n:"3", t:"Dorsal Tilt",          d:"Articular surface tilts dorsally (most characteristic)" },
    { n:"4", t:"Lateral Displacement", d:"Distal fragment shifts radially/laterally" },
    { n:"5", t:"Lateral Tilt",         d:"Articular surface tilts laterally" },
    { n:"6", t:"Supination",           d:"Distal fragment supinates" }
  ];

  disps.forEach((d, i) => {
    const col = i % 2;
    const row = Math.floor(i / 2);
    const x = 0.22 + col * 4.95;
    const y = 0.84 + row * 1.2;
    const bg = i % 2 === 0 ? LIGHT_BG : LIGHT2;
    s.addShape(pres.ShapeType.rect, { x, y, w:4.7, h:1.05, fill:{color:bg}, line:{color:MED_BLUE,pt:1} });
    s.addShape(pres.ShapeType.rect, { x, y, w:0.42, h:1.05, fill:{color:ACCENT} });
    s.addText(d.n, { x, y, w:0.42, h:1.05, fontSize:14, bold:true, color:WHITE, align:"center", valign:"middle", margin:0 });
    s.addText(d.t, { x:x+0.52, y:y+0.06, w:4.1, h:0.34, fontSize:12.5, bold:true, color:MED_BLUE, valign:"middle", margin:0 });
    s.addText(d.d, { x:x+0.52, y:y+0.44, w:4.1, h:0.54, fontSize:11, color:DARK, margin:0 });
  });

  // Comminution note
  s.addShape(pres.ShapeType.rect, { x:0.22, y:4.48, w:9.56, h:0.65, fill:{color:MED_BLUE} });
  s.addText([
    { text:"Note: ", options:{bold:true, color:GOLD} },
    { text:"Comminution of dorsal & lateral cortices occurs with displacement. Rarely the whole distal fragment breaks into pieces.", options:{color:WHITE} }
  ], { x:0.35, y:4.48, w:9.3, h:0.65, fontSize:11, valign:"middle", margin:0 });

  footer(s);
}

// ════════════════════════════════════════════════════════════════
// SLIDE 5 — DISPLACEMENT DIAGRAMS (Fig 15.7 – Maheshwari clean)
// ════════════════════════════════════════════════════════════════
{
  let s = pres.addSlide();
  s.addShape(pres.ShapeType.rect, { x:0, y:0, w:10, h:5.625, fill:{color:DARK} });
  hdr(s, "Displacements in Colles' Fracture – Fig. 15.7 (Maheshwari)");

  // AP view labels
  s.addShape(pres.ShapeType.rect, { x:0.25, y:0.82, w:4.3, h:0.32, fill:{color:MED_BLUE} });
  s.addText("AP VIEW", { x:0.25, y:0.82, w:4.3, h:0.32, fontSize:10, bold:true, color:GOLD, align:"center", valign:"middle", margin:0 });
  s.addText([
    { text:"• Proximal shift (impaction)\n", options:{color:WHITE, breakLine:true} },
    { text:"• Radial shift\n", options:{color:WHITE, breakLine:true} },
    { text:"• Radial tilt", options:{color:WHITE} }
  ], { x:0.25, y:1.17, w:4.3, h:0.85, fontSize:13, margin:5 });

  // Lateral view labels
  s.addShape(pres.ShapeType.rect, { x:5.45, y:0.82, w:4.3, h:0.32, fill:{color:MED_BLUE} });
  s.addText("LATERAL VIEW", { x:5.45, y:0.82, w:4.3, h:0.32, fontSize:10, bold:true, color:GOLD, align:"center", valign:"middle", margin:0 });
  s.addText([
    { text:"• Proximal shift\n", options:{color:WHITE, breakLine:true} },
    { text:"• Dorsal shift\n", options:{color:WHITE, breakLine:true} },
    { text:"• Dorsal tilt  ← most characteristic", options:{color:GOLD} }
  ], { x:5.45, y:1.17, w:4.3, h:0.85, fontSize:13, margin:5 });

  // Clean displacement diagram from Maheshwari (Jaypee CDN)
  if(imgDisplace) {
    s.addImage({ data:imgDisplace, x:1.5, y:2.1, w:7.0, h:3.0, sizing:{type:"contain",w:7.0,h:3.0} });
  }

  s.addText("Fig. 15.7 – Displacements in Colles' Fracture (Maheshwari Essential Orthopaedics)", {
    x:0, y:5.25, w:10, h:0.375, fontSize:9, color:SUBTEXT, align:"center", valign:"middle"
  });
}

// ════════════════════════════════════════════════════════════════
// SLIDE 6 — ASSOCIATED INJURIES
// ════════════════════════════════════════════════════════════════
{
  let s = pres.addSlide();
  s.addShape(pres.ShapeType.rect, { x:0, y:0, w:10, h:5.625, fill:{color:WHITE} });
  hdr(s, "Commonly Associated Injuries");

  const injuries = [
    { n:"①", t:"Fracture of styloid process of ulna", c:ACCENT },
    { n:"②", t:"Rupture of ulnar collateral ligament", c:MED_BLUE },
    { n:"③", t:"Rupture of triangular cartilage of ulna", c:ACCENT },
    { n:"④", t:"Rupture of interosseous radio-ulnar ligament", sub:"→ causing radio-ulnar subluxation", c:MED_BLUE }
  ];

  injuries.forEach((inj, i) => {
    const y = 0.85 + i * 0.98;
    const bg = i % 2 === 0 ? LIGHT_BG : LIGHT2;
    s.addShape(pres.ShapeType.rect, { x:0.3, y, w:9.4, h:0.82, fill:{color:bg}, line:{color:inj.c, pt:1.5} });
    s.addText(inj.n, { x:0.4, y, w:0.55, h:0.82, fontSize:22, bold:true, color:inj.c, valign:"middle", align:"center", margin:0 });
    s.addText(inj.t, { x:1.08, y:y+0.05, w:8.5, h:0.38, fontSize:14, bold:true, color:DARK, valign:"middle", margin:0 });
    if(inj.sub) s.addText(inj.sub, { x:1.08, y:y+0.46, w:8.5, h:0.28, fontSize:11, color:ACCENT, italic:true, margin:0 });
  });

  s.addShape(pres.ShapeType.rect, { x:0.3, y:4.78, w:9.4, h:0.38, fill:{color:MED_BLUE} });
  s.addText("Maheshwari: Chapter 15 – Injuries of the Forearm and Wrist", {
    x:0.3, y:4.78, w:9.4, h:0.38, fontSize:10, color:SUBTEXT, align:"center", valign:"middle", italic:true, margin:0
  });

  footer(s);
}

// ════════════════════════════════════════════════════════════════
// SLIDE 7 — CLINICAL FEATURES + DINNER FORK DEFORMITY
// ════════════════════════════════════════════════════════════════
{
  let s = pres.addSlide();
  s.addShape(pres.ShapeType.rect, { x:0, y:0, w:10, h:5.625, fill:{color:WHITE} });
  hdr(s, "Diagnosis – Clinical Features");

  // Left: symptoms & signs
  box(s, 0.25, 0.82, 5.6, 4.3);
  pill(s, "SYMPTOMS & SIGNS", 0.25, 0.82, 5.6);
  s.addText([
    { text:"Presenting complaints:\n", options:{bold:true, color:MED_BLUE, breakLine:true} },
    { text:"  • Pain\n  • Swelling\n  • Deformity of the wrist\n\n", options:{color:DARK, breakLine:true} },
    { text:"On examination:\n", options:{bold:true, color:MED_BLUE, breakLine:true} },
    { text:"  • Tenderness\n", options:{color:DARK, breakLine:true} },
    { text:"  • Irregularity of lower end of radius\n", options:{color:DARK, breakLine:true} },
    { text:"  • Typical 'Dinner Fork Deformity' (Fig. 15.8)\n\n", options:{color:DARK, breakLine:true} },
    { text:"Radial styloid:\n", options:{bold:true, color:ACCENT, breakLine:true} },
    { text:"  • Rises to same level or higher than\n    ulnar styloid process", options:{color:DARK} }
  ], { x:0.38, y:1.12, w:5.35, h:3.9, fontSize:12.5, valign:"top", margin:3 });

  // Right: Dinner fork box
  s.addShape(pres.ShapeType.rect, { x:6.05, y:0.82, w:3.7, h:4.3, fill:{color:MED_BLUE} });
  s.addText("'DINNER FORK'\nDEFORMITY", {
    x:6.05, y:0.9, w:3.7, h:0.78, fontSize:16, bold:true, color:GOLD, align:"center", valign:"middle", margin:0
  });
  s.addText("Fig. 15.8 – Maheshwari", {
    x:6.05, y:1.72, w:3.7, h:0.28, fontSize:9, color:SUBTEXT, align:"center", italic:true, margin:0
  });
  s.addText(
    "The dorsal hump and volar depression of the wrist closely resemble the curve of a dinner fork (seen from the side).",
    { x:6.15, y:2.08, w:3.5, h:1.0, fontSize:12, color:WHITE, align:"center", valign:"top", margin:5 }
  );
  // Illustration from orthobullets (clean clinical illustration)
  if(imgIllus) {
    s.addImage({ data:imgIllus, x:6.2, y:3.15, w:3.4, h:1.8, sizing:{type:"contain",w:3.4,h:1.8} });
  }

  footer(s);
}

// ════════════════════════════════════════════════════════════════
// SLIDE 8 — RADIOLOGICAL FEATURES
// ════════════════════════════════════════════════════════════════
{
  let s = pres.addSlide();
  s.addShape(pres.ShapeType.rect, { x:0, y:0, w:10, h:5.625, fill:{color:WHITE} });
  hdr(s, "Diagnosis – Radiological Features");

  // X-ray images
  if(imgXray4) {
    s.addImage({ data:imgXray4, x:0.25, y:0.82, w:4.5, h:3.7, sizing:{type:"contain",w:4.5,h:3.7} });
  }
  s.addText("AP & Lateral X-ray – Colles' fracture\nNote: distal articular surface faces dorsally", {
    x:0.25, y:4.55, w:4.5, h:0.45, fontSize:8.5, color:MED_BLUE, align:"center", italic:true
  });

  // Right column
  box(s, 5.0, 0.82, 4.75, 1.65);
  pill(s, "DORSAL TILT — Most Characteristic", 5.0, 0.82, 4.75, ACCENT);
  s.addText("On lateral X-ray: articular surface normally faces ventrally. After fracture → faces dorsally or becomes neutral = dorsal tilt confirmed.", {
    x:5.1, y:1.12, w:4.55, h:1.28, fontSize:11.5, color:DARK, margin:3
  });

  box(s, 5.0, 2.6, 4.75, 1.1);
  pill(s, "LATERAL TILT", 5.0, 2.6, 4.75);
  s.addText("On AP X-ray: surface normally faces medially. If faces laterally/horizontal → lateral tilt confirmed.", {
    x:5.1, y:2.9, w:4.55, h:0.72, fontSize:11.5, color:DARK, margin:3
  });

  s.addShape(pres.ShapeType.rect, { x:5.0, y:3.84, w:4.75, h:0.9, fill:{color:DARK} });
  s.addText([
    { text:"Differentiate from:\n", options:{bold:true, color:GOLD} },
    { text:"Smith's fracture  •  Barton's fracture\n", options:{color:WHITE} },
    { text:"→ by comparing displacement pattern", options:{color:SUBTEXT, italic:true} }
  ], { x:5.1, y:3.84, w:4.55, h:0.9, fontSize:11, valign:"middle", margin:5 });

  footer(s);
}

// ════════════════════════════════════════════════════════════════
// SLIDE 9 — TREATMENT OVERVIEW
// ════════════════════════════════════════════════════════════════
{
  let s = pres.addSlide();
  s.addShape(pres.ShapeType.rect, { x:0, y:0, w:10, h:5.625, fill:{color:WHITE} });
  hdr(s, "Treatment");

  // Undisplaced
  box(s, 0.25, 0.82, 4.6, 1.55);
  pill(s, "UNDISPLACED FRACTURE", 0.25, 0.82, 4.6);
  s.addText("Immobilisation in below-elbow plaster cast for 6 weeks (sufficient)", {
    x:0.35, y:1.12, w:4.4, h:1.18, fontSize:13, color:DARK, valign:"middle", margin:5
  });

  // Displaced
  box(s, 5.15, 0.82, 4.6, 1.55, LIGHT2);
  pill(s, "DISPLACED FRACTURE", 5.15, 0.82, 4.6, ACCENT);
  s.addText("Manipulative reduction + immobilisation in Colles' cast (Fig. 15.9)\nEssentially conservative", {
    x:5.25, y:1.12, w:4.4, h:1.18, fontSize:13, color:DARK, valign:"middle", margin:5
  });

  // Colles cast image
  if(imgCast) {
    s.addImage({ data:imgCast, x:0.25, y:2.55, w:4.6, h:2.3, sizing:{type:"contain",w:4.6,h:2.3} });
    s.addText("Fig. 15.9 – Colles' cast\n(a) Palmar flexion  (b) Ulnar deviation\nMaheshwari", {
      x:0.25, y:4.88, w:4.6, h:0.3, fontSize:8.5, color:MED_BLUE, align:"center", italic:true
    });
  }

  // Trend
  s.addShape(pres.ShapeType.rect, { x:5.15, y:2.55, w:4.6, h:2.35, fill:{color:MED_BLUE} });
  s.addText("CURRENT TREND", { x:5.15, y:2.55, w:4.6, h:0.3, fontSize:10, bold:true, color:GOLD, align:"center", valign:"middle", margin:0 });
  s.addText([
    { text:"Treatment is essentially ", options:{color:WHITE} },
    { text:"conservative", options:{bold:true, color:GOLD} },
    { text:".\n\nOperative methods increasingly used:\n", options:{color:WHITE, breakLine:true} },
    { text:"  • Improved surgical techniques\n", options:{color:SUBTEXT, breakLine:true} },
    { text:"  • Greater functional demands of patients", options:{color:SUBTEXT} }
  ], { x:5.25, y:2.9, w:4.4, h:1.85, fontSize:12, valign:"top", margin:0 });

  footer(s);
}

// ════════════════════════════════════════════════════════════════
// SLIDE 10 — CONSERVATIVE: CLOSED MANIPULATION
// ════════════════════════════════════════════════════════════════
{
  let s = pres.addSlide();
  s.addShape(pres.ShapeType.rect, { x:0, y:0, w:10, h:5.625, fill:{color:WHITE} });
  hdr(s, "Conservative Treatment – Closed Manipulation (Fig. 15.10)");

  const steps = [
    { n:"1", t:"Anaesthesia",       d:"General or regional – to relax forearm muscles" },
    { n:"2", t:"Grasp",             d:"Surgeon grasps hand as if 'shaking hands'" },
    { n:"3", t:"Disimpaction",      d:"Firm longitudinal traction vs counter-traction above flexed elbow" },
    { n:"4", t:"Correction",        d:"Thumb presses distal fragment into palmar flexion + ulnar deviation" },
    { n:"5", t:"Final position",    d:"Hand drawn into pronation, palmar flexion, ulnar deviation" },
    { n:"6", t:"Cast (Fig. 15.9)",  d:"Below elbow → metacarpal heads; wrist in palmar flexion + ulnar deviation = Colles' cast" }
  ];

  steps.forEach((st, i) => {
    const col = i % 2;
    const row = Math.floor(i / 2);
    const x = 0.22 + col * 5.0;
    const y = 0.82 + row * 0.98;
    const bg = i % 2 === 0 ? LIGHT_BG : LIGHT2;
    s.addShape(pres.ShapeType.rect, { x, y, w:4.7, h:0.84, fill:{color:bg}, line:{color:MED_BLUE,pt:1} });
    s.addShape(pres.ShapeType.rect, { x, y, w:0.4, h:0.84, fill:{color:ACCENT} });
    s.addText(st.n, { x, y, w:0.4, h:0.84, fontSize:14, bold:true, color:WHITE, align:"center", valign:"middle", margin:0 });
    s.addText(st.t, { x:x+0.5, y:y+0.04, w:4.1, h:0.3, fontSize:11.5, bold:true, color:MED_BLUE, valign:"middle", margin:0 });
    s.addText(st.d, { x:x+0.5, y:y+0.37, w:4.1, h:0.42, fontSize:10, color:DARK, margin:0 });
  });

  // Manipulation image
  if(imgManip) {
    s.addImage({ data:imgManip, x:0.7, y:3.82, w:8.6, h:1.3, sizing:{type:"contain",w:8.6,h:1.3} });
  }

  s.addText("Fig. 15.10 – Technique of reduction: Counter-traction → Correction of dorsal tilt → Correction of radial tilt (Maheshwari)", {
    x:0, y:5.25, w:10, h:0.375, fontSize:8.5, color:SUBTEXT, align:"center", valign:"middle"
  });
}

// ════════════════════════════════════════════════════════════════
// SLIDE 11 — POST-REDUCTION & FOLLOW-UP
// ════════════════════════════════════════════════════════════════
{
  let s = pres.addSlide();
  s.addShape(pres.ShapeType.rect, { x:0, y:0, w:10, h:5.625, fill:{color:WHITE} });
  hdr(s, "Post-Reduction Care & Follow-up");

  const items = [
    { label:"X-ray Check",         text:"Check X-ray after reduction – confirm dorsal tilt corrected (articular surface must face ventrally)" },
    { label:"Finger Movement",      text:"Patient moves fingers as soon as plaster dries" },
    { label:"Shoulder & Elbow",     text:"Moved through full range of motion several times daily" },
    { label:"Weekly X-rays (×3)",   text:"Check every week for first 3 weeks – to detect re-displacement" },
    { label:"Plaster Removal",      text:"At 6 weeks – then wrist & finger mobilisation + muscle strengthening exercises" }
  ];

  items.forEach((item, i) => {
    const y = 0.85 + i * 0.82;
    const bg = i % 2 === 0 ? LIGHT_BG : LIGHT2;
    s.addShape(pres.ShapeType.rect, { x:0.25, y, w:9.5, h:0.7, fill:{color:bg}, line:{color:MED_BLUE,pt:0.5} });
    s.addShape(pres.ShapeType.rect, { x:0.25, y, w:1.55, h:0.7, fill:{color:MED_BLUE} });
    s.addText(item.label, { x:0.25, y, w:1.55, h:0.7, fontSize:9, bold:true, color:WHITE, align:"center", valign:"middle", margin:2 });
    s.addText(item.text, { x:1.9, y, w:7.75, h:0.7, fontSize:12, color:DARK, valign:"middle", margin:4 });
  });

  footer(s);
}

// ════════════════════════════════════════════════════════════════
// SLIDE 12 — OPERATIVE TREATMENT
// ════════════════════════════════════════════════════════════════
{
  let s = pres.addSlide();
  s.addShape(pres.ShapeType.rect, { x:0, y:0, w:10, h:5.625, fill:{color:WHITE} });
  hdr(s, "Operative Treatment – Methods of Fixation (Fig. 15.11)");

  const methods = [
    { n:"i",   t:"Plating  (Fig. 15.11B)",              d:"Opened from front; reduced under direct vision; fixed with anatomically contoured locking compression plate." },
    { n:"ii",  t:"Percutaneous Pinning  (Fig. 15.11A)",  d:"Reduced under GA + image intensifier; fixed with ≥2 K-wires (2 mm) percutaneously; immobilized 6 weeks." },
    { n:"iii", t:"External Fixation  (Fig. 15.11C)",     d:"Fixator keeps fracture 'distracted'; ligaments + periosteum hold comminuted fragments in place. Principle: Ligamentotaxis." }
  ];

  methods.forEach((m, i) => {
    const y = 0.84 + i * 1.22;
    const bg = i % 2 === 0 ? LIGHT_BG : LIGHT2;
    s.addShape(pres.ShapeType.rect, { x:0.25, y, w:5.5, h:1.07, fill:{color:bg}, line:{color:MED_BLUE,pt:1} });
    s.addShape(pres.ShapeType.rect, { x:0.25, y, w:0.48, h:1.07, fill:{color:ACCENT} });
    s.addText(m.n, { x:0.25, y, w:0.48, h:1.07, fontSize:14, bold:true, color:WHITE, align:"center", valign:"middle", margin:0 });
    s.addText(m.t, { x:0.82, y:y+0.05, w:4.85, h:0.3, fontSize:12.5, bold:true, color:MED_BLUE, valign:"middle", margin:0 });
    s.addText(m.d, { x:0.82, y:y+0.4, w:4.85, h:0.62, fontSize:10.5, color:DARK, margin:0 });
  });

  // Indications
  s.addShape(pres.ShapeType.rect, { x:6.0, y:0.84, w:3.75, h:1.72, fill:{color:DARK} });
  s.addText("INDICATIONS FOR SURGERY", { x:6.0, y:0.84, w:3.75, h:0.3, fontSize:9, bold:true, color:GOLD, align:"center", valign:"middle", margin:0 });
  s.addText([
    { text:"• Younger patients\n", options:{color:WHITE, breakLine:true} },
    { text:"• Badly displaced fracture\n", options:{color:WHITE, breakLine:true} },
    { text:"• Intra-articular extension\n", options:{color:WHITE, breakLine:true} },
    { text:"• Elderly with high functional demand", options:{color:WHITE} }
  ], { x:6.1, y:1.18, w:3.55, h:1.3, fontSize:11, margin:0 });

  // X-ray from Radiopaedia (clean, no personal photo)
  if(imgXray3) {
    s.addImage({ data:imgXray3, x:6.0, y:2.68, w:3.75, h:2.3, sizing:{type:"contain",w:3.75,h:2.3} });
    s.addText("Distal radius fracture X-ray (Orthobullets)", {
      x:6.0, y:4.95, w:3.75, h:0.23, fontSize:7.5, color:MED_BLUE, align:"center", italic:true
    });
  }

  footer(s);
}

// ════════════════════════════════════════════════════════════════
// SLIDE 13 — COMPLICATIONS
// ════════════════════════════════════════════════════════════════
{
  let s = pres.addSlide();
  s.addShape(pres.ShapeType.rect, { x:0, y:0, w:10, h:5.625, fill:{color:WHITE} });
  hdr(s, "Complications");

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  const comps = [
    { n:"1", t:"Stiffness of Joints",                      c:ACCENT,   d:"Most common. Fingers, shoulder, wrist, elbow. Prevention: actively move all joints not in plaster." },
    { n:"2", t:"Malunion",                                  c:MED_BLUE, d:"Common. Re-displacement in plaster → dinner fork deformity. Rx: osteotomy if severe." },
    { n:"3", t:"Subluxation – Inferior Radio-Ulnar Joint",  c:ACCENT,   d:"Ulnar head prominent; restricted wrist + forearm rotation. Rx: Darrach's resection (excision of lower ulna)." },
    { n:"4", t:"Carpal Tunnel Syndrome",                    c:MED_BLUE, d:"Median nerve compressed by fracture callus. Rx: carpal tunnel decompression." },
    { n:"5", t:"Sudeck's Osteodystrophy",                   c:ACCENT,   d:"Most common cause in upper limb. Pain, stiffness, glossy skin after plaster removal. Rx: intensive physiotherapy." },
    { n:"6", t:"Rupture of Extensor Pollicis Longus",       c:MED_BLUE, d:"Rare, delayed. Ischaemia or friction over malunion. Rx: tendon transfer (ext. indicis → EPL)." }
  ];

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  footer(s);
}

// ════════════════════════════════════════════════════════════════
// SLIDE 14 — SUMMARY
// ════════════════════════════════════════════════════════════════
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  const pts = [
    "Fracture at corticocancellous junction ~2 cm from articular surface",
    "Most common: age >40, women, post-menopausal osteoporosis, FOOSH",
    "6 displacements: impaction, dorsal shift/tilt, lateral shift/tilt, supination",
    "Hallmark: dorsal tilt on lateral X-ray; dinner fork deformity clinically",
    "Treatment: conservative – manipulative reduction + Colles' cast × 6 weeks",
    "Operative (when needed): plating, K-wire fixation, external fixation",
    "Complications: stiffness, malunion, DRUJ subluxation, CTS, Sudeck's, EPL rupture"
  ];

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  s.addText("Source: Essentials of Orthopaedics – Maheshwari | Chapter 15 – Injuries of the Forearm and Wrist", {
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// ════════════════════════════════════════════════════════════════
pres.writeFile({ fileName:"/home/daytona/workspace/colles-fracture-ppt/Colles_Fracture_Maheshwari_v2.pptx" })
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