const pptxgen = require("pptxgenjs");

const pres = new pptxgen();
pres.layout = "LAYOUT_WIDE";
pres.title = "Range of Motion Exercises";
pres.author = "Physiotherapy Education";

// ─── COLOR PALETTE ───────────────────────────────────────────────
const C = {
  navy:      "0A2342",   // dominant dark bg
  teal:      "00B4D8",   // primary accent
  tealDark:  "0077A8",
  tealLight: "ADE8F4",
  white:     "FFFFFF",
  offWhite:  "F0F8FF",
  amber:     "F4A261",
  red:       "E63946",
  green:     "2DC653",
  gray:      "8EAABF",
  lightGray: "D8E9F0",
  darkText:  "1A2A3A",
};

// ─── HELPER: Dark slide background ───────────────────────────────
function darkBg(slide) {
  slide.addShape(pres.shapes.RECTANGLE, {
    x: 0, y: 0, w: "100%", h: "100%",
    fill: { color: C.navy }, line: { color: C.navy }
  });
}

// ─── HELPER: Light slide background ──────────────────────────────
function lightBg(slide) {
  slide.addShape(pres.shapes.RECTANGLE, {
    x: 0, y: 0, w: "100%", h: "100%",
    fill: { color: C.offWhite }, line: { color: C.offWhite }
  });
}

// ─── HELPER: Teal accent bar (top) ───────────────────────────────
function topBar(slide, h = 0.08) {
  slide.addShape(pres.shapes.RECTANGLE, {
    x: 0, y: 0, w: "100%", h,
    fill: { color: C.teal }, line: { color: C.teal }
  });
}

// ─── HELPER: Bottom footer bar ───────────────────────────────────
function footerBar(slide, text = "Range of Motion Exercises | Physiotherapy Education") {
  slide.addShape(pres.shapes.RECTANGLE, {
    x: 0, y: 7.3, w: "100%", h: 0.2,
    fill: { color: C.tealDark }, line: { color: C.tealDark }
  });
  slide.addText(text, {
    x: 0, y: 7.3, w: "100%", h: 0.2,
    fontSize: 8, color: C.white, align: "center", valign: "middle", margin: 0
  });
}

// ─── HELPER: Card box ────────────────────────────────────────────
function card(slide, x, y, w, h, fillColor = C.white, radius = 0.1) {
  slide.addShape(pres.shapes.ROUNDED_RECTANGLE, {
    x, y, w, h,
    fill: { color: fillColor },
    line: { color: fillColor },
    rectRadius: radius,
    shadow: { type: "outer", color: "000000", blur: 8, offset: 3, angle: 135, opacity: 0.12 }
  });
}

// ─── HELPER: Icon circle ─────────────────────────────────────────
function iconCircle(slide, x, y, r, bgColor, emoji, fontSize = 22) {
  slide.addShape(pres.shapes.OVAL, {
    x, y, w: r, h: r,
    fill: { color: bgColor }, line: { color: bgColor }
  });
  slide.addText(emoji, {
    x, y, w: r, h: r,
    fontSize, align: "center", valign: "middle", margin: 0
  });
}

// ─── HELPER: Section heading pill ────────────────────────────────
function pill(slide, x, y, w, text, bg = C.teal) {
  slide.addShape(pres.shapes.ROUNDED_RECTANGLE, {
    x, y, w, h: 0.38,
    fill: { color: bg }, line: { color: bg }, rectRadius: 0.19
  });
  slide.addText(text, {
    x, y, w, h: 0.38,
    fontSize: 11, bold: true, color: C.white, align: "center", valign: "middle", margin: 0
  });
}

// ─── HELPER: Joint range indicator bar ───────────────────────────
function rangeBar(slide, x, y, w, pct, label, degrees) {
  // Background bar
  slide.addShape(pres.shapes.ROUNDED_RECTANGLE, {
    x, y, w, h: 0.28, fill: { color: C.lightGray }, line: { color: C.lightGray }, rectRadius: 0.14
  });
  // Fill bar
  slide.addShape(pres.shapes.ROUNDED_RECTANGLE, {
    x, y, w: w * pct, h: 0.28, fill: { color: C.teal }, line: { color: C.teal }, rectRadius: 0.14
  });
  slide.addText(label, { x, y: y + 0.3, w: w * 0.65, h: 0.25, fontSize: 9, color: C.darkText });
  slide.addText(degrees, { x: x + w * 0.65, y: y + 0.3, w: w * 0.35, h: 0.25, fontSize: 9, color: C.tealDark, bold: true, align: "right" });
}

// ─── HELPER: Step box ────────────────────────────────────────────
function stepBox(slide, x, y, num, title, body, bg = C.teal) {
  card(slide, x, y, 2.7, 1.5, C.white);
  slide.addShape(pres.shapes.OVAL, { x: x + 0.1, y: y + 0.1, w: 0.42, h: 0.42, fill: { color: bg }, line: { color: bg } });
  slide.addText(String(num), { x: x + 0.1, y: y + 0.1, w: 0.42, h: 0.42, fontSize: 14, bold: true, color: C.white, align: "center", valign: "middle", margin: 0 });
  slide.addText(title, { x: x + 0.6, y: y + 0.12, w: 2.0, h: 0.38, fontSize: 11, bold: true, color: C.navy, valign: "middle" });
  slide.addText(body, { x: x + 0.15, y: y + 0.6, w: 2.45, h: 0.8, fontSize: 9.5, color: C.darkText, wrap: true });
}

// ═══════════════════════════════════════════════════════════════
// SLIDE 1: TITLE SLIDE
// ═══════════════════════════════════════════════════════════════
{
  const sl = pres.addSlide();
  darkBg(sl);

  // Teal diagonal accent
  sl.addShape(pres.shapes.RECTANGLE, {
    x: 8.5, y: 0, w: 4.8, h: 7.5,
    fill: { color: C.teal, transparency: 88 }, line: { color: C.teal, transparency: 88 }
  });

  // Big teal bar left
  sl.addShape(pres.shapes.RECTANGLE, {
    x: 0, y: 0, w: 0.18, h: "100%",
    fill: { color: C.teal }, line: { color: C.teal }
  });

  // Subtitle pill
  pill(sl, 0.5, 1.0, 3.2, "PHYSIOTHERAPY EDUCATION", C.teal);

  // Title
  sl.addText("Range of Motion", {
    x: 0.5, y: 1.55, w: 8.5, h: 1.2,
    fontSize: 52, bold: true, color: C.white, fontFace: "Calibri"
  });
  sl.addText("Exercises", {
    x: 0.5, y: 2.7, w: 8.5, h: 1.0,
    fontSize: 52, bold: true, color: C.teal, fontFace: "Calibri"
  });

  // Subtitle line
  sl.addShape(pres.shapes.RECTANGLE, {
    x: 0.5, y: 3.8, w: 4.5, h: 0.05,
    fill: { color: C.tealLight }, line: { color: C.tealLight }
  });

  sl.addText("Joint Flexibility • Mobility • Rehabilitation", {
    x: 0.5, y: 3.95, w: 8, h: 0.5,
    fontSize: 16, color: C.tealLight, italic: true
  });

  // Topic icons row
  const topics = [
    { icon: "🦴", label: "Joint Health" },
    { icon: "💪", label: "Strengthening" },
    { icon: "🩺", label: "Rehabilitation" },
    { icon: "🧘", label: "Flexibility" },
  ];
  topics.forEach((t, i) => {
    const bx = 0.5 + i * 2.0;
    iconCircle(sl, bx, 4.7, 0.72, C.tealDark, t.icon, 22);
    sl.addText(t.label, { x: bx - 0.1, y: 5.48, w: 1.0, h: 0.3, fontSize: 9, color: C.gray, align: "center" });
  });

  // Bottom info
  sl.addText("Presented by: Physiotherapy Department  |  June 2026", {
    x: 0.5, y: 6.9, w: 10, h: 0.35,
    fontSize: 10, color: C.gray, italic: true
  });
}

// ═══════════════════════════════════════════════════════════════
// SLIDE 2: WHAT IS ROM?
// ═══════════════════════════════════════════════════════════════
{
  const sl = pres.addSlide();
  lightBg(sl);
  topBar(sl);

  sl.addText("What is Range of Motion (ROM)?", {
    x: 0.4, y: 0.2, w: 12, h: 0.65,
    fontSize: 28, bold: true, color: C.navy, fontFace: "Calibri"
  });

  // Definition card
  card(sl, 0.4, 1.0, 12.5, 1.2, C.navy);
  sl.addText("📖  Definition:", {
    x: 0.7, y: 1.05, w: 3, h: 0.4,
    fontSize: 13, bold: true, color: C.teal, margin: 0
  });
  sl.addText("ROM is the full movement potential of a joint — the arc through which it can move without pain or restriction.", {
    x: 0.7, y: 1.45, w: 12, h: 0.6,
    fontSize: 14, color: C.white, italic: true
  });

  // 4 factor cards
  const facts = [
    { icon: "🦷", color: C.tealDark, title: "Joint Type", body: "Ball-and-socket (shoulder, hip) have more ROM than hinge joints (knee, elbow)" },
    { icon: "💪", color: "1B4D3E", title: "Muscle Flexibility", body: "Tight muscles limit how far the joint can move in any direction" },
    { icon: "🔗", color: "7B2D8B", title: "Ligaments & Tendons", body: "These connective tissues act as natural brakes on joint movement" },
    { icon: "⚠️", color: "B5451B", title: "Age & Disease", body: "Arthritis, injury & aging reduce available ROM progressively" },
  ];
  facts.forEach((f, i) => {
    const cx = 0.4 + i * 3.18;
    card(sl, cx, 2.4, 3.0, 2.4, C.white);
    iconCircle(sl, cx + 1.14, 2.5, 0.72, f.color, f.icon, 20);
    sl.addText(f.title, { x: cx + 0.1, y: 3.28, w: 2.8, h: 0.4, fontSize: 12, bold: true, color: C.navy, align: "center" });
    sl.addText(f.body, { x: cx + 0.15, y: 3.72, w: 2.7, h: 0.9, fontSize: 9.5, color: C.darkText, align: "center", wrap: true });
  });

  // Measurement note
  card(sl, 0.4, 5.0, 12.5, 0.85, C.tealDark);
  sl.addText("📐  Measurement:", { x: 0.7, y: 5.05, w: 3, h: 0.35, fontSize: 11, bold: true, color: C.tealLight, margin: 0 });
  sl.addText("ROM is measured using a GONIOMETER — a protractor-like device placed at the joint axis. Normal values are compared to the opposite side.", {
    x: 0.7, y: 5.38, w: 12, h: 0.38, fontSize: 10.5, color: C.white
  });

  footerBar(sl);
}

// ═══════════════════════════════════════════════════════════════
// SLIDE 3: 3 TYPES OF ROM
// ═══════════════════════════════════════════════════════════════
{
  const sl = pres.addSlide();
  darkBg(sl);
  topBar(sl);

  sl.addText("3 Types of ROM Exercises", {
    x: 0.4, y: 0.15, w: 12, h: 0.65,
    fontSize: 28, bold: true, color: C.white, fontFace: "Calibri"
  });

  // Type cards
  const types = [
    {
      abbr: "PROM",
      full: "Passive ROM",
      color: "1D5F8A",
      accent: C.teal,
      icon: "🙌",
      who: "Therapist / Caregiver",
      when: "Paralysis, ICU, immediately post-op",
      how: "Therapist moves the limb. Patient uses ZERO muscle effort.",
      example: "Nurse moves paralyzed patient's knee from 0° to 90° and back",
      steps: ["Support the limb fully", "Move slowly & gently", "Stay within pain-free range", "Hold 5 sec at end range", "Repeat 5–10 times"]
    },
    {
      abbr: "AAROM",
      full: "Active-Assisted ROM",
      color: "1B4D3E",
      accent: C.amber,
      icon: "🤝",
      who: "Patient + Helper / Device",
      when: "Weak muscles, early recovery phase",
      how: "Patient tries to move, helper completes the arc.",
      example: "Shoulder pulley: good arm pulls rope to lift operated arm",
      steps: ["Patient initiates movement", "Therapist supports & assists", "Pulley / stick may be used", "Increase patient effort daily", "Track progress weekly"]
    },
    {
      abbr: "AROM",
      full: "Active ROM",
      color: "3D1A60",
      accent: C.green,
      icon: "🏃",
      who: "Patient Independently",
      when: "Advanced recovery, daily maintenance",
      how: "Patient uses own muscle power — no assistance needed.",
      example: "Turning neck left & right, lifting arm above head",
      steps: ["Move slowly & controlled", "Reach full available range", "No bouncing or jerking", "Breathe through movement", "2–3 sets of 10 reps/day"]
    },
  ];

  types.forEach((t, i) => {
    const cx = 0.3 + i * 4.35;
    // Main card
    slide_card(sl, cx, 0.95, 4.1, 6.1, t.color);

    // Abbr pill
    sl.addShape(pres.shapes.ROUNDED_RECTANGLE, {
      x: cx + 0.15, y: 1.0, w: 1.2, h: 0.45,
      fill: { color: t.accent }, line: { color: t.accent }, rectRadius: 0.2
    });
    sl.addText(t.abbr, { x: cx + 0.15, y: 1.0, w: 1.2, h: 0.45, fontSize: 13, bold: true, color: C.white, align: "center", valign: "middle", margin: 0 });

    // Icon
    sl.addText(t.icon, { x: cx + 1.5, y: 0.98, w: 0.7, h: 0.5, fontSize: 24, align: "center" });

    // Full name
    sl.addText(t.full, { x: cx + 0.15, y: 1.52, w: 3.8, h: 0.42, fontSize: 14, bold: true, color: C.white });

    // Who / When
    sl.addText("👤 " + t.who, { x: cx + 0.15, y: 2.0, w: 3.8, h: 0.32, fontSize: 9.5, color: t.accent });
    sl.addText("🕐 " + t.when, { x: cx + 0.15, y: 2.32, w: 3.8, h: 0.32, fontSize: 9, color: C.lightGray, wrap: true });

    // Separator
    sl.addShape(pres.shapes.RECTANGLE, { x: cx + 0.15, y: 2.7, w: 3.7, h: 0.03, fill: { color: t.accent }, line: { color: t.accent } });

    // How
    sl.addText("How:", { x: cx + 0.15, y: 2.78, w: 1, h: 0.28, fontSize: 9, bold: true, color: t.accent });
    sl.addText(t.how, { x: cx + 0.15, y: 3.06, w: 3.8, h: 0.52, fontSize: 9.5, color: C.white, wrap: true });

    // Example
    sl.addShape(pres.shapes.ROUNDED_RECTANGLE, {
      x: cx + 0.15, y: 3.62, w: 3.8, h: 0.6,
      fill: { color: t.accent, transparency: 75 }, line: { color: t.accent, transparency: 50 }, rectRadius: 0.08
    });
    sl.addText("Example: " + t.example, { x: cx + 0.25, y: 3.66, w: 3.6, h: 0.52, fontSize: 9, color: C.white, italic: true, wrap: true });

    // Steps
    sl.addText("Steps:", { x: cx + 0.15, y: 4.3, w: 1, h: 0.28, fontSize: 9, bold: true, color: t.accent });
    t.steps.forEach((s, si) => {
      sl.addShape(pres.shapes.OVAL, { x: cx + 0.15, y: 4.62 + si * 0.3, w: 0.18, h: 0.18, fill: { color: t.accent }, line: { color: t.accent } });
      sl.addText(s, { x: cx + 0.4, y: 4.58 + si * 0.3, w: 3.6, h: 0.28, fontSize: 8.5, color: C.lightGray });
    });
  });

  footerBar(sl);
}

function slide_card(slide, x, y, w, h, fillColor) {
  slide.addShape(pres.shapes.ROUNDED_RECTANGLE, {
    x, y, w, h,
    fill: { color: fillColor },
    line: { color: fillColor },
    rectRadius: 0.15,
    shadow: { type: "outer", color: "000000", blur: 10, offset: 4, angle: 135, opacity: 0.25 }
  });
}

// ═══════════════════════════════════════════════════════════════
// SLIDE 4: NECK ROM EXERCISES
// ═══════════════════════════════════════════════════════════════
{
  const sl = pres.addSlide();
  lightBg(sl);
  topBar(sl);

  pill(sl, 0.4, 0.18, 2.2, "🦷 NECK EXERCISES", C.tealDark);
  sl.addText("Cervical Spine Range of Motion", {
    x: 2.8, y: 0.15, w: 10, h: 0.65,
    fontSize: 26, bold: true, color: C.navy
  });

  // Range bars
  const ranges = [
    { label: "Flexion (Chin → Chest)", deg: "0–45°", pct: 0.5 },
    { label: "Extension (Head Back)", deg: "0–45°", pct: 0.5 },
    { label: "Lateral Flexion (L/R)", deg: "0–45°", pct: 0.5 },
    { label: "Rotation (Left/Right)", deg: "0–60°", pct: 0.67 },
  ];
  ranges.forEach((r, i) => {
    rangeBar(sl, 0.5, 1.05 + i * 0.72, 4.0, r.pct, r.label, r.deg);
  });

  // Exercise cards
  const exercises = [
    { icon: "⬇️", title: "Flexion", steps: "Slowly bring chin to chest. Hold 5 sec. Return to neutral. Repeat 10x.", warning: "" },
    { icon: "⬆️", title: "Extension", steps: "Gently tilt head back, looking at ceiling. Hold 5 sec. Don't strain. Repeat 10x.", warning: "⚠️ Avoid in cervical spondylosis" },
    { icon: "↔️", title: "Lateral Flexion", steps: "Tilt ear towards shoulder (don't raise shoulder). Hold 5 sec each side. Repeat 10x.", warning: "" },
    { icon: "🔄", title: "Rotation", steps: "Turn head to look over shoulder — left then right. Hold 5 sec. Repeat 10x.", warning: "" },
  ];

  exercises.forEach((e, i) => {
    const cx = 4.8 + (i % 2) * 4.2;
    const cy = 1.05 + Math.floor(i / 2) * 2.0;
    card(sl, cx, cy, 4.0, 1.75, C.white);
    sl.addText(e.icon, { x: cx + 0.15, y: cy + 0.1, w: 0.6, h: 0.55, fontSize: 24, align: "center" });
    sl.addText(e.title, { x: cx + 0.8, y: cy + 0.12, w: 3.0, h: 0.4, fontSize: 13, bold: true, color: C.navy });
    sl.addText(e.steps, { x: cx + 0.15, y: cy + 0.62, w: 3.7, h: 0.75, fontSize: 9.5, color: C.darkText, wrap: true });
    if (e.warning) {
      sl.addText(e.warning, { x: cx + 0.15, y: cy + 1.42, w: 3.7, h: 0.25, fontSize: 8.5, color: C.red, bold: true });
    }
  });

  // Key tip
  card(sl, 0.4, 5.25, 12.8, 0.72, C.navy);
  sl.addText("💡  Key Tip:", { x: 0.7, y: 5.3, w: 1.5, h: 0.35, fontSize: 11, bold: true, color: C.teal, margin: 0 });
  sl.addText("Always perform neck ROM in SITTING position. Never force movement. If dizziness occurs, STOP immediately — may indicate vertebral artery involvement.", {
    x: 0.7, y: 5.63, w: 12.2, h: 0.28, fontSize: 10, color: C.white
  });

  footerBar(sl);
}

// ═══════════════════════════════════════════════════════════════
// SLIDE 5: SHOULDER ROM EXERCISES
// ═══════════════════════════════════════════════════════════════
{
  const sl = pres.addSlide();
  darkBg(sl);
  topBar(sl);

  pill(sl, 0.4, 0.18, 2.4, "💪 SHOULDER EXERCISES", C.amber);
  sl.addText("Shoulder Joint Range of Motion", {
    x: 3.0, y: 0.15, w: 10, h: 0.65,
    fontSize: 26, bold: true, color: C.white
  });

  // Shoulder movements grid
  const movements = [
    { icon: "⬆️", name: "Flexion", range: "0–180°", color: "0A4F7A", desc: "Raise arm straight forward & overhead. Stand/sit straight, slow movement.", tip: "Keep elbow straight" },
    { icon: "⬇️", name: "Extension", range: "0–60°", color: "1B4D3E", desc: "Move arm straight backward behind body. Keep trunk stable.", tip: "Don't rotate torso" },
    { icon: "↗️", name: "Abduction", range: "0–180°", color: "4A235A", desc: "Raise arm out to the side, up to ear level. Palm faces down.", tip: "Elbow stays straight" },
    { icon: "↙️", name: "Adduction", range: "0–30°", color: "5C2E00", desc: "Bring arm across body toward midline from abducted position.", tip: "Cross body gently" },
    { icon: "🔁", name: "Int. Rotation", range: "0–90°", color: "003333", desc: "Elbow at 90°, bring forearm toward abdomen (palm faces body).", tip: "Keep elbow at side" },
    { icon: "🔃", name: "Ext. Rotation", range: "0–90°", color: "1A3A00", desc: "Elbow at 90°, move forearm away from body (palm faces out).", tip: "Supported if painful" },
  ];

  movements.forEach((m, i) => {
    const cx = 0.4 + (i % 3) * 4.3;
    const cy = 1.0 + Math.floor(i / 3) * 2.3;
    slide_card(sl, cx, cy, 4.1, 2.1, m.color);

    sl.addText(m.icon, { x: cx + 0.12, y: cy + 0.1, w: 0.65, h: 0.6, fontSize: 26, align: "center" });
    sl.addText(m.name, { x: cx + 0.85, y: cy + 0.12, w: 2.5, h: 0.38, fontSize: 13, bold: true, color: C.white });
    sl.addShape(pres.shapes.ROUNDED_RECTANGLE, {
      x: cx + 3.2, y: cy + 0.1, w: 0.75, h: 0.35,
      fill: { color: C.amber }, line: { color: C.amber }, rectRadius: 0.1
    });
    sl.addText(m.range, { x: cx + 3.2, y: cy + 0.1, w: 0.75, h: 0.35, fontSize: 8.5, bold: true, color: C.navy, align: "center", valign: "middle", margin: 0 });

    sl.addText(m.desc, { x: cx + 0.15, y: cy + 0.62, w: 3.8, h: 0.85, fontSize: 9, color: C.lightGray, wrap: true });
    sl.addShape(pres.shapes.RECTANGLE, { x: cx + 0.15, y: cy + 1.52, w: 3.8, h: 0.03, fill: { color: C.amber }, line: { color: C.amber } });
    sl.addText("✔ " + m.tip, { x: cx + 0.15, y: cy + 1.6, w: 3.8, h: 0.35, fontSize: 8.5, color: C.amber, italic: true });
  });

  // Special exercise box
  card(sl, 0.4, 5.65, 12.8, 0.88, "0D3D5C");
  sl.addText("⭐  Pendulum Exercise (Codman's):", { x: 0.7, y: 5.7, w: 4, h: 0.35, fontSize: 11, bold: true, color: C.teal, margin: 0 });
  sl.addText("Lean forward with arm hanging freely. Gently swing arm in small circles (clockwise + anti-clockwise). Gravity provides natural traction. Best for: Frozen shoulder, post-fracture rehab. Sets: 2×20 circles, twice daily.", {
    x: 0.7, y: 6.02, w: 12.2, h: 0.4, fontSize: 9.5, color: C.white, wrap: true
  });

  footerBar(sl);
}

// ═══════════════════════════════════════════════════════════════
// SLIDE 6: ELBOW, WRIST & HAND ROM
// ═══════════════════════════════════════════════════════════════
{
  const sl = pres.addSlide();
  lightBg(sl);
  topBar(sl);

  pill(sl, 0.4, 0.18, 3.2, "✋ ELBOW · WRIST · HAND", C.tealDark);
  sl.addText("Upper Limb Distal ROM Exercises", {
    x: 3.8, y: 0.15, w: 9, h: 0.65,
    fontSize: 26, bold: true, color: C.navy
  });

  // ELBOW section
  sl.addText("ELBOW", { x: 0.4, y: 0.9, w: 2, h: 0.38, fontSize: 12, bold: true, color: C.tealDark });
  sl.addShape(pres.shapes.RECTANGLE, { x: 0.4, y: 1.28, w: 5.8, h: 0.03, fill: { color: C.tealDark }, line: { color: C.tealDark } });

  const elbowEx = [
    { title: "Flexion / Extension", range: "0–145°", icon: "↕️", desc: "Bend elbow fully (fist to shoulder), then straighten completely. 10 reps." },
    { title: "Pronation / Supination", range: "0–90° each", icon: "🔄", desc: "Elbow at 90°. Rotate forearm: palm down (pronate), palm up (supinate). 10 reps." },
  ];
  elbowEx.forEach((e, i) => {
    card(sl, 0.4 + i * 3.0, 1.35, 2.8, 1.55, C.white);
    sl.addText(e.icon, { x: 0.4 + i * 3.0 + 0.1, y: 1.4, w: 0.6, h: 0.55, fontSize: 22, align: "center" });
    sl.addText(e.title, { x: 0.4 + i * 3.0 + 0.75, y: 1.42, w: 1.9, h: 0.38, fontSize: 10.5, bold: true, color: C.navy });
    sl.addText(e.range, { x: 0.4 + i * 3.0 + 0.1, y: 1.85, w: 2.6, h: 0.25, fontSize: 9, color: C.teal, bold: true });
    sl.addText(e.desc, { x: 0.4 + i * 3.0 + 0.1, y: 2.12, w: 2.6, h: 0.7, fontSize: 9, color: C.darkText, wrap: true });
  });

  // WRIST section
  sl.addText("WRIST", { x: 0.4, y: 3.05, w: 2, h: 0.38, fontSize: 12, bold: true, color: "7B2D8B" });
  sl.addShape(pres.shapes.RECTANGLE, { x: 0.4, y: 3.43, w: 5.8, h: 0.03, fill: { color: "7B2D8B" }, line: { color: "7B2D8B" } });

  const wristEx = [
    { title: "Flexion / Extension", range: "0–80° / 0–70°", icon: "↕️", desc: "Bend wrist down (flexion) then up (extension). Support forearm on table. 10 reps." },
    { title: "Radial / Ulnar Deviation", range: "0–20° / 0–30°", icon: "↔️", desc: "Move wrist toward thumb side, then little finger side. 10 reps each." },
  ];
  wristEx.forEach((e, i) => {
    card(sl, 0.4 + i * 3.0, 3.5, 2.8, 1.55, C.white);
    sl.addText(e.icon, { x: 0.4 + i * 3.0 + 0.1, y: 3.55, w: 0.6, h: 0.55, fontSize: 22, align: "center" });
    sl.addText(e.title, { x: 0.4 + i * 3.0 + 0.75, y: 3.57, w: 1.9, h: 0.4, fontSize: 10.5, bold: true, color: C.navy });
    sl.addText(e.range, { x: 0.4 + i * 3.0 + 0.1, y: 4.0, w: 2.6, h: 0.25, fontSize: 9, color: "7B2D8B", bold: true });
    sl.addText(e.desc, { x: 0.4 + i * 3.0 + 0.1, y: 4.28, w: 2.6, h: 0.7, fontSize: 9, color: C.darkText, wrap: true });
  });

  // HAND section - right side
  sl.addText("HAND & FINGERS", { x: 6.6, y: 0.9, w: 6, h: 0.38, fontSize: 12, bold: true, color: C.amber });
  sl.addShape(pres.shapes.RECTANGLE, { x: 6.6, y: 1.28, w: 6.5, h: 0.03, fill: { color: C.amber }, line: { color: C.amber } });

  const handEx = [
    { icon: "✊", title: "Fist Grip", desc: "Make tight fist, hold 5 sec. Open fingers fully. Repeat 10–15x.\nBest for: Arthritis, post-fracture" },
    { icon: "🤏", title: "Pinch Exercise", desc: "Touch tip of each finger to thumb one by one. Go through all 4 fingers.\nRepeat 5–10x each hand." },
    { icon: "🖐️", title: "Finger Spread", desc: "Spread all fingers as wide as possible, hold 5 sec. Close back.\nRepeat 10x." },
    { icon: "👈", title: "Finger Curl", desc: "Curl only finger joints (MCP, PIP, DIP) without making fist.\nRepeat 10x slowly." },
  ];
  handEx.forEach((e, i) => {
    const cx = 6.6 + (i % 2) * 3.3;
    const cy = 1.4 + Math.floor(i / 2) * 1.85;
    card(sl, cx, cy, 3.1, 1.7, C.white);
    sl.addText(e.icon, { x: cx + 0.1, y: cy + 0.1, w: 0.7, h: 0.65, fontSize: 26, align: "center" });
    sl.addText(e.title, { x: cx + 0.85, y: cy + 0.15, w: 2.1, h: 0.4, fontSize: 11, bold: true, color: C.navy });
    sl.addText(e.desc, { x: cx + 0.15, y: cy + 0.65, w: 2.85, h: 0.95, fontSize: 9, color: C.darkText, wrap: true });
  });

  // Tip row
  card(sl, 0.4, 5.2, 12.8, 0.62, "FFF3E0");
  sl.addText("⚠️  Arthritis Tip: Perform hand exercises AFTER warm soak (warm water for 5 minutes). Never exercise during acute flare — wait for inflammation to settle.", {
    x: 0.65, y: 5.28, w: 12.4, h: 0.48, fontSize: 10, color: C.darkText, italic: true
  });

  footerBar(sl);
}

// ═══════════════════════════════════════════════════════════════
// SLIDE 7: HIP & KNEE ROM EXERCISES
// ═══════════════════════════════════════════════════════════════
{
  const sl = pres.addSlide();
  darkBg(sl);
  topBar(sl);

  pill(sl, 0.4, 0.18, 2.5, "🦵 HIP & KNEE", C.green);
  sl.addText("Lower Limb Range of Motion Exercises", {
    x: 3.1, y: 0.15, w: 10, h: 0.65,
    fontSize: 26, bold: true, color: C.white
  });

  // HIP exercises
  sl.addText("HIP JOINT", { x: 0.4, y: 0.95, w: 3, h: 0.4, fontSize: 14, bold: true, color: C.green });

  const hipEx = [
    { icon: "⬆️", title: "Hip Flexion", range: "0–120°", pos: "Lying/standing", steps: "Lying on back: bring knee to chest. Or standing: raise knee toward chest with support. Hold 5 sec. 10 reps." },
    { icon: "⬇️", title: "Hip Extension", range: "0–30°", pos: "Lying prone / standing", steps: "Lie face down, raise straight leg off bed. Or hold rail, kick leg backward. Keep back straight. 10 reps." },
    { icon: "↔️", title: "Abduction", range: "0–45°", pos: "Lying on back", steps: "Slide leg out to side while keeping knee straight & toes pointing up. Bring back slowly. 10 reps." },
    { icon: "🔄", title: "Hip Rotation", range: "Int 0–45° / Ext 0–45°", pos: "Lying on back", steps: "Knee & hip at 90°. Roll knee inward (int. rotation), then outward (ext. rotation). 10 reps." },
  ];
  hipEx.forEach((e, i) => {
    const cx = 0.4 + (i % 2) * 6.5;
    const cy = 1.42 + Math.floor(i / 2) * 2.0;
    slide_card(sl, cx, cy, 6.2, 1.85, "0D3D2A");
    sl.addText(e.icon, { x: cx + 0.12, y: cy + 0.15, w: 0.65, h: 0.6, fontSize: 26, align: "center" });
    sl.addText(e.title, { x: cx + 0.85, y: cy + 0.15, w: 3.5, h: 0.42, fontSize: 12, bold: true, color: C.white });
    sl.addShape(pres.shapes.ROUNDED_RECTANGLE, {
      x: cx + 4.5, y: cy + 0.12, w: 1.55, h: 0.38,
      fill: { color: C.green }, line: { color: C.green }, rectRadius: 0.1
    });
    sl.addText(e.range, { x: cx + 4.5, y: cy + 0.12, w: 1.55, h: 0.38, fontSize: 8, bold: true, color: C.navy, align: "center", valign: "middle", margin: 0 });
    sl.addText("Position: " + e.pos, { x: cx + 0.15, y: cy + 0.64, w: 5.9, h: 0.28, fontSize: 9, color: C.tealLight, italic: true });
    sl.addText(e.steps, { x: cx + 0.15, y: cy + 0.94, w: 5.9, h: 0.82, fontSize: 9.5, color: C.lightGray, wrap: true });
  });

  // KNEE exercises
  sl.addText("KNEE JOINT", { x: 6.9, y: 0.95, w: 3, h: 0.4, fontSize: 14, bold: true, color: C.amber });
  const kneeEx = [
    { icon: "↕️", title: "Flexion / Extension", range: "0–135°", desc: "Lying on back: slide heel toward buttocks (flexion), then straighten (extension). 10 slow reps.", note: "Heel slide exercise — can be done in bed" },
    { icon: "🏋️", title: "Terminal Knee Ext.", range: "Last 30°", desc: "With theraband behind knee: straighten the final 30° only. Strengthens VMO muscle. 3×15.", note: "Key for quadriceps re-activation" },
    { icon: "🚲", title: "Cycling Motion", range: "Full arc", desc: "Lying on back, cycle legs in the air. Combines hip + knee ROM. Great for early rehab. 2 min.", note: "Gravity-assisted, low-resistance" },
  ];

  kneeEx.forEach((e, i) => {
    slide_card(sl, 6.9, 1.42 + i * 1.95, 6.2, 1.78, "2A1500");
    sl.addText(e.icon, { x: 7.02, y: 1.52 + i * 1.95, w: 0.65, h: 0.6, fontSize: 24, align: "center" });
    sl.addText(e.title, { x: 7.72, y: 1.52 + i * 1.95, w: 3.5, h: 0.4, fontSize: 12, bold: true, color: C.white });
    sl.addShape(pres.shapes.ROUNDED_RECTANGLE, {
      x: 11.4, y: 1.52 + i * 1.95, w: 1.5, h: 0.35,
      fill: { color: C.amber }, line: { color: C.amber }, rectRadius: 0.1
    });
    sl.addText(e.range, { x: 11.4, y: 1.52 + i * 1.95, w: 1.5, h: 0.35, fontSize: 8.5, bold: true, color: C.navy, align: "center", valign: "middle", margin: 0 });
    sl.addText(e.desc, { x: 7.05, y: 2.0 + i * 1.95, w: 5.9, h: 0.75, fontSize: 9.5, color: C.lightGray, wrap: true });
    sl.addText("✔ " + e.note, { x: 7.05, y: 2.78 + i * 1.95, w: 5.9, h: 0.28, fontSize: 8.5, color: C.amber, italic: true });
  });

  footerBar(sl);
}

// ═══════════════════════════════════════════════════════════════
// SLIDE 8: ANKLE & FOOT ROM
// ═══════════════════════════════════════════════════════════════
{
  const sl = pres.addSlide();
  lightBg(sl);
  topBar(sl);

  pill(sl, 0.4, 0.18, 2.2, "👣 ANKLE & FOOT", C.red);
  sl.addText("Ankle & Foot Range of Motion Exercises", {
    x: 2.8, y: 0.15, w: 10, h: 0.65,
    fontSize: 26, bold: true, color: C.navy
  });

  // Ankle movements
  const ankleEx = [
    {
      icon: "⬆️", title: "Dorsiflexion", range: "0–20°", color: "0A3050",
      desc: "Pull toes/foot up toward shin. Feel stretch in calf. Hold 5 sec.",
      why: "Required for normal walking — loss = steppage gait",
      tip: "Do with knee straight AND bent (tests Achilles vs soleus)"
    },
    {
      icon: "⬇️", title: "Plantarflexion", range: "0–50°", color: "1B4D3E",
      desc: "Point toes/foot down like ballet position. Hold 5 sec.",
      why: "Essential for push-off phase of walking",
      tip: "Ankle pumps (up+down) = DVT prevention exercise"
    },
    {
      icon: "↙️", title: "Inversion", range: "0–35°", color: "4A235A",
      desc: "Turn sole of foot inward (toward other foot). 10 slow reps.",
      why: "Tibialis anterior & posterior control this movement",
      tip: "Often limited after ankle sprains & fractures"
    },
    {
      icon: "↗️", title: "Eversion", range: "0–15°", color: "5C2E00",
      desc: "Turn sole outward (away from other foot). 10 slow reps.",
      why: "Peroneal muscles — important for lateral stability",
      tip: "Strengthening eversion prevents ankle re-sprains"
    },
  ];

  ankleEx.forEach((e, i) => {
    const cx = 0.4 + (i % 2) * 6.5;
    const cy = 1.0 + Math.floor(i / 2) * 2.25;
    card(sl, cx, cy, 6.2, 2.1, C.white);

    // Color top band
    sl.addShape(pres.shapes.ROUNDED_RECTANGLE, {
      x: cx, y: cy, w: 6.2, h: 0.5,
      fill: { color: e.color }, line: { color: e.color }, rectRadius: 0.1
    });
    sl.addText(e.icon + "  " + e.title, { x: cx + 0.15, y: cy + 0.05, w: 4.5, h: 0.4, fontSize: 13, bold: true, color: C.white });
    sl.addShape(pres.shapes.ROUNDED_RECTANGLE, {
      x: cx + 4.85, y: cy + 0.07, w: 1.2, h: 0.33,
      fill: { color: C.teal }, line: { color: C.teal }, rectRadius: 0.1
    });
    sl.addText(e.range, { x: cx + 4.85, y: cy + 0.07, w: 1.2, h: 0.33, fontSize: 9, bold: true, color: C.white, align: "center", valign: "middle", margin: 0 });

    sl.addText(e.desc, { x: cx + 0.15, y: cy + 0.58, w: 5.9, h: 0.55, fontSize: 10, color: C.darkText, wrap: true });
    sl.addText("📌 Why: " + e.why, { x: cx + 0.15, y: cy + 1.15, w: 5.9, h: 0.38, fontSize: 9, color: C.tealDark, italic: true, wrap: true });
    sl.addText("✔ " + e.tip, { x: cx + 0.15, y: cy + 1.55, w: 5.9, h: 0.38, fontSize: 9, color: "7B2D8B", wrap: true });
  });

  // Alphabet exercise
  card(sl, 0.4, 5.5, 12.8, 0.7, C.navy);
  sl.addText("⭐  Alphabet Exercise:", { x: 0.7, y: 5.55, w: 2.5, h: 0.3, fontSize: 11, bold: true, color: C.teal, margin: 0 });
  sl.addText("Sitting or lying — use your big toe to 'write' all 26 letters of the alphabet in the air. Covers ALL ankle movements (dorsiflexion, plantarflexion, inversion, eversion, circumduction). Excellent post-sprain & post-surgery rehab.", {
    x: 0.7, y: 5.84, w: 12.2, h: 0.32, fontSize: 9.5, color: C.white
  });

  footerBar(sl);
}

// ═══════════════════════════════════════════════════════════════
// SLIDE 9: SPINE / BACK ROM
// ═══════════════════════════════════════════════════════════════
{
  const sl = pres.addSlide();
  darkBg(sl);
  topBar(sl);

  pill(sl, 0.4, 0.18, 2.5, "🧘 SPINE EXERCISES", C.tealLight);
  sl.addText("Lumbar Spine Range of Motion", {
    x: 3.1, y: 0.15, w: 10, h: 0.65,
    fontSize: 26, bold: true, color: C.white
  });

  const spineEx = [
    {
      title: "Knee to Chest", icon: "🤸", range: "Flexion",
      pos: "Lying on back", sets: "10 reps each side",
      desc: "Bring one knee up to chest with both hands. Hold 20–30 sec. Switch sides. Then both knees together.",
      benefit: "Stretches lumbar extensors & glutes. Relieves disc pressure.",
      color: "0A4F7A"
    },
    {
      title: "Cat-Camel Stretch", icon: "🐱", range: "Flex + Ext",
      pos: "On all fours (hands & knees)", sets: "10 slow cycles",
      desc: "ARCH back up (cat — spine flexion). Then let belly DROP down (camel — spine extension). Move through full range slowly.",
      benefit: "Lubricates facet joints. Improves full lumbar mobility.",
      color: "1B4D3E"
    },
    {
      title: "Trunk Rotation", icon: "🔄", range: "0–45° each side",
      pos: "Lying on back", sets: "10 reps each side",
      desc: "Knees bent, feet flat on bed. Let both knees fall to one side slowly. Hold 5 sec. Bring back to center. Repeat other side.",
      benefit: "Stretches obliques & lumbar rotators. Reduces morning stiffness.",
      color: "4A235A"
    },
    {
      title: "Lateral Flexion", icon: "↔️", range: "0–25° each side",
      pos: "Standing", sets: "10 reps each side",
      desc: "Stand straight, arms at side. Slide one hand down thigh toward knee ('side bend'). Hold 5 sec. Return. Other side.",
      benefit: "Stretches QL muscle (quadratus lumborum). Key in low back pain.",
      color: "3D1A60"
    },
    {
      title: "Pelvic Tilt", icon: "⬆️⬇️", range: "Neutral → Posterior",
      pos: "Lying on back", sets: "15 reps",
      desc: "Flatten lower back against floor by tightening abdomen & tilting pelvis. Hold 5 sec. Release. Repeat.",
      benefit: "Activates core. Reduces lumbar lordosis. Foundation of back rehab.",
      color: "1A3A00"
    },
    {
      title: "Prone Extension", icon: "🦸", range: "0–30°",
      pos: "Lying face down", sets: "10 reps",
      desc: "Lie face down. Push up with hands, letting lower back arch. Keep pelvis on floor. Hold 5 sec. (McKenzie extension).",
      benefit: "Centralizes disc pain. McKenzie protocol for disc herniation rehab.",
      color: "5C2E00"
    },
  ];

  spineEx.forEach((e, i) => {
    const cx = 0.4 + (i % 3) * 4.35;
    const cy = 1.0 + Math.floor(i / 3) * 2.65;
    slide_card(sl, cx, cy, 4.1, 2.5, e.color);

    // Icon + title
    sl.addText(e.icon, { x: cx + 0.12, y: cy + 0.1, w: 0.62, h: 0.6, fontSize: 24, align: "center" });
    sl.addText(e.title, { x: cx + 0.82, y: cy + 0.12, w: 2.6, h: 0.42, fontSize: 11.5, bold: true, color: C.white });
    sl.addShape(pres.shapes.ROUNDED_RECTANGLE, {
      x: cx + 3.2, y: cy + 0.1, w: 0.75, h: 0.35,
      fill: { color: C.teal }, line: { color: C.teal }, rectRadius: 0.1
    });
    sl.addText(e.range, { x: cx + 3.2, y: cy + 0.1, w: 0.75, h: 0.35, fontSize: 7.5, color: C.white, align: "center", valign: "middle", margin: 0 });

    sl.addText("📍 " + e.pos + "  |  " + e.sets, { x: cx + 0.12, y: cy + 0.62, w: 3.85, h: 0.28, fontSize: 8.5, color: C.tealLight, italic: true });
    sl.addText(e.desc, { x: cx + 0.12, y: cy + 0.94, w: 3.85, h: 0.85, fontSize: 9, color: C.lightGray, wrap: true });
    sl.addShape(pres.shapes.RECTANGLE, { x: cx + 0.12, y: cy + 1.85, w: 3.85, h: 0.03, fill: { color: C.teal }, line: { color: C.teal } });
    sl.addText("✔ " + e.benefit, { x: cx + 0.12, y: cy + 1.9, w: 3.85, h: 0.52, fontSize: 8.5, color: C.teal, wrap: true, italic: true });
  });

  footerBar(sl);
}

// ═══════════════════════════════════════════════════════════════
// SLIDE 10: BENEFITS vs LIMITATIONS (COMPARISON)
// ═══════════════════════════════════════════════════════════════
{
  const sl = pres.addSlide();
  lightBg(sl);
  topBar(sl);

  sl.addText("Benefits vs Limitations of ROM Exercises", {
    x: 0.4, y: 0.18, w: 12.8, h: 0.65,
    fontSize: 26, bold: true, color: C.navy
  });

  // Benefits column
  slide_card(sl, 0.3, 0.95, 6.2, 5.85, "0A2342");
  sl.addText("✅  BENEFITS", { x: 0.55, y: 1.05, w: 5.7, h: 0.5, fontSize: 16, bold: true, color: C.green });

  const benefits = [
    { icon: "🔬", text: "Reduces joint stiffness & improves synovial fluid distribution" },
    { icon: "🚫", text: "Prevents contracture formation in bedridden patients" },
    { icon: "❤️", text: "Improves blood circulation & prevents DVT" },
    { icon: "💪", text: "Maintains muscle mass & prevents atrophy" },
    { icon: "😌", text: "Reduces pain via endorphin release & gate control" },
    { icon: "🧠", text: "Aids neuroplasticity in stroke & SCI patients" },
    { icon: "🦴", text: "Provides cartilage nutrition via synovial fluid" },
    { icon: "🧘", text: "Improves psychological well-being & independence" },
  ];
  benefits.forEach((b, i) => {
    sl.addShape(pres.shapes.RECTANGLE, {
      x: 0.55, y: 1.65 + i * 0.58, w: 5.7, h: 0.5,
      fill: { color: i % 2 === 0 ? "0D3D2A" : "0A4F7A", transparency: 20 },
      line: { color: "FFFFFF", transparency: 90 }
    });
    sl.addText(b.icon + "  " + b.text, {
      x: 0.7, y: 1.67 + i * 0.58, w: 5.5, h: 0.46,
      fontSize: 9.5, color: C.lightGray, valign: "middle"
    });
  });

  // Limitations column
  slide_card(sl, 6.8, 0.95, 6.2, 5.85, "2A0A0A");
  sl.addText("⚠️  LIMITATIONS & RISKS", { x: 7.05, y: 1.05, w: 5.7, h: 0.5, fontSize: 16, bold: true, color: C.red });

  const limits = [
    { icon: "🩹", text: "Wrong technique can cause ligament tear or nerve injury" },
    { icon: "🦴", text: "Risk of heterotopic ossification in TBI/SCI if too aggressive" },
    { icon: "🔓", text: "Hypermobile joints can become unstable with overuse" },
    { icon: "🔥", text: "Worsens acute inflammation — contraindicated in active flares" },
    { icon: "🩸", text: "Can displace blood clot (DVT) if ROM done on clotted limb" },
    { icon: "❌", text: "Passive ROM does NOT build muscle strength" },
    { icon: "⏳", text: "Time-intensive — resource burden in under-staffed settings" },
    { icon: "🦴", text: "Fracture risk in severe osteoporosis with even gentle ROM" },
  ];
  limits.forEach((l, i) => {
    sl.addShape(pres.shapes.RECTANGLE, {
      x: 7.05, y: 1.65 + i * 0.58, w: 5.7, h: 0.5,
      fill: { color: i % 2 === 0 ? "3D0A0A" : "5C1A00", transparency: 20 },
      line: { color: "FFFFFF", transparency: 90 }
    });
    sl.addText(l.icon + "  " + l.text, {
      x: 7.2, y: 1.67 + i * 0.58, w: 5.5, h: 0.46,
      fontSize: 9.5, color: C.lightGray, valign: "middle"
    });
  });

  footerBar(sl);
}

// ═══════════════════════════════════════════════════════════════
// SLIDE 11: STEP-BY-STEP PROTOCOL
// ═══════════════════════════════════════════════════════════════
{
  const sl = pres.addSlide();
  darkBg(sl);
  topBar(sl);

  sl.addText("How to Perform ROM Exercises Safely", {
    x: 0.4, y: 0.18, w: 12.8, h: 0.65,
    fontSize: 26, bold: true, color: C.white
  });

  // Step flow
  const steps = [
    { n: 1, icon: "📋", title: "Assess the Patient", body: "Check for contraindications: fracture, DVT, acute inflammation, open wounds. Verify doctor's order. Explain procedure to patient.", color: C.tealDark },
    { n: 2, icon: "🌡️", title: "Prepare & Warm Up", body: "Apply warm towel/heat pack for 5–10 min. Ensure comfortable position. Expose only the joint being treated.", color: "1B4D3E" },
    { n: 3, icon: "🤲", title: "Support the Limb", body: "Use both hands — one proximal to joint, one distal. Never grip over the joint itself. Support weight of the limb fully.", color: "4A235A" },
    { n: 4, icon: "⚡", title: "Perform Movement", body: "Move SLOWLY through full available range. Gentle overpressure at end range (5 sec). STOP at first sign of pain/resistance.", color: "5C2E00" },
    { n: 5, icon: "🔁", title: "Repeat & Progress", body: "5–10 repetitions per movement. 2–3 sessions per day. Gradually increase range and resistance over days/weeks.", color: "1A3A00" },
    { n: 6, icon: "📝", title: "Document & Monitor", body: "Record ROM angles with goniometer. Note pain level (0–10). Compare with previous session. Report any changes.", color: "0A3050" },
  ];

  // Draw connecting arrows
  for (let i = 0; i < 5; i++) {
    const isBottom = i >= 3;
    if (i < 2) {
      sl.addShape(pres.shapes.RECTANGLE, { x: 4.35 + i * 4.4, y: 2.45, w: 0.5, h: 0.12, fill: { color: C.teal }, line: { color: C.teal } });
      sl.addText("→", { x: 4.25 + i * 4.4, y: 2.35, w: 0.6, h: 0.35, fontSize: 18, color: C.teal, align: "center" });
    } else if (i === 2) {
      // Down arrow
      sl.addText("↓", { x: 11.6, y: 3.15, w: 0.6, h: 0.55, fontSize: 22, color: C.teal, align: "center" });
    } else if (i < 5) {
      sl.addShape(pres.shapes.RECTANGLE, { x: 4.35 + (4 - i) * 4.4, y: 4.75, w: 0.5, h: 0.12, fill: { color: C.amber }, line: { color: C.amber } });
      sl.addText("←", { x: 4.25 + (4 - i) * 4.4, y: 4.62, w: 0.6, h: 0.35, fontSize: 18, color: C.amber, align: "center" });
    }
  }

  steps.forEach((s, i) => {
    const row = Math.floor(i / 3);
    const col = row === 0 ? i : (2 - (i - 3));
    const cx = 0.35 + col * 4.35;
    const cy = 1.0 + row * 3.35;
    slide_card(sl, cx, cy, 4.05, 2.9, s.color);

    // Step number circle
    sl.addShape(pres.shapes.OVAL, { x: cx + 0.15, y: cy + 0.12, w: 0.7, h: 0.7, fill: { color: C.white }, line: { color: C.white } });
    sl.addText(String(s.n), { x: cx + 0.15, y: cy + 0.12, w: 0.7, h: 0.7, fontSize: 18, bold: true, color: s.color, align: "center", valign: "middle", margin: 0 });

    // Icon
    sl.addText(s.icon, { x: cx + 0.95, y: cy + 0.12, w: 0.6, h: 0.65, fontSize: 22, align: "center" });

    // Title
    sl.addText(s.title, { x: cx + 1.6, y: cy + 0.18, w: 2.3, h: 0.45, fontSize: 12, bold: true, color: C.white });

    // Body
    sl.addText(s.body, { x: cx + 0.18, y: cy + 0.95, w: 3.7, h: 1.8, fontSize: 10, color: C.lightGray, wrap: true });
  });

  // Warning
  sl.addText("⚠️  RULE: If patient reports sharp pain, numbness, dizziness, or skin color change → STOP immediately and reassess.", {
    x: 0.4, y: 7.1, w: 12.8, h: 0.3, fontSize: 9.5, color: C.amber, align: "center"
  });

  footerBar(sl);
}

// ═══════════════════════════════════════════════════════════════
// SLIDE 12: CONTRAINDICATIONS TABLE
// ═══════════════════════════════════════════════════════════════
{
  const sl = pres.addSlide();
  lightBg(sl);
  topBar(sl);

  sl.addText("Contraindications & Special Precautions", {
    x: 0.4, y: 0.18, w: 12.8, h: 0.65,
    fontSize: 26, bold: true, color: C.navy
  });

  // Absolute Contraindications
  sl.addText("ABSOLUTE CONTRAINDICATIONS — DO NOT PERFORM", {
    x: 0.4, y: 0.95, w: 12.8, h: 0.38,
    fontSize: 12, bold: true, color: C.white
  });
  sl.addShape(pres.shapes.RECTANGLE, { x: 0.4, y: 0.92, w: 12.8, h: 0.42, fill: { color: C.red }, line: { color: C.red } });
  sl.addText("ABSOLUTE CONTRAINDICATIONS — DO NOT PERFORM", { x: 0.4, y: 0.92, w: 12.8, h: 0.42, fontSize: 12, bold: true, color: C.white, align: "center", valign: "middle" });

  const absolute = [
    { cond: "Unstabilized Fracture", reason: "Movement displaces bone fragments → malunion or neurovascular injury", icon: "🦴" },
    { cond: "Fresh Joint Dislocation", reason: "Further structural damage before reduction/stabilization", icon: "⚠️" },
    { cond: "Deep Vein Thrombosis (DVT)", reason: "Clot may embolize to lungs (Pulmonary Embolism — life threatening)", icon: "🩸" },
    { cond: "Acute Septic Arthritis", reason: "Movement spreads infection to surrounding tissue", icon: "🔥" },
  ];
  absolute.forEach((a, i) => {
    const cx = 0.4 + (i % 2) * 6.5;
    const cy = 1.42 + Math.floor(i / 2) * 0.72;
    slide_card(sl, cx, cy, 6.2, 0.62, "FFF0F0");
    sl.addText(a.icon + " " + a.cond, { x: cx + 0.15, y: cy + 0.07, w: 2.2, h: 0.48, fontSize: 10.5, bold: true, color: C.red, valign: "middle" });
    sl.addText(a.reason, { x: cx + 2.4, y: cy + 0.07, w: 3.6, h: 0.48, fontSize: 9.5, color: C.darkText, valign: "middle", wrap: true });
  });

  // Relative Contraindications
  sl.addShape(pres.shapes.RECTANGLE, { x: 0.4, y: 3.0, w: 12.8, h: 0.42, fill: { color: C.amber }, line: { color: C.amber } });
  sl.addText("RELATIVE CONTRAINDICATIONS — MODIFY & PROCEED WITH CAUTION", { x: 0.4, y: 3.0, w: 12.8, h: 0.42, fontSize: 12, bold: true, color: C.navy, align: "center", valign: "middle" });

  const relative = [
    { cond: "Severe Osteoporosis", mod: "Very gentle PROM only. Avoid forced movements.", icon: "💔" },
    { cond: "Acute Inflammation / Flare", mod: "Rest during flare. Resume after inflammation settles.", icon: "🔴" },
    { cond: "Open Wounds / Skin Graft", mod: "Avoid direct pressure on wound. Modify positioning.", icon: "🩹" },
    { cond: "Hypermobile Joints", mod: "Stay within normal range. Avoid end-range overpressure.", icon: "🔓" },
    { cond: "Recent Ligament Repair", mod: "Follow surgeon's protocol. Time-specific restrictions.", icon: "🔗" },
    { cond: "Cardiac / Hemodynamic Instability", mod: "Monitor vitals. Keep ROM gentle & short duration.", icon: "💗" },
  ];
  relative.forEach((r, i) => {
    const cx = 0.4 + (i % 3) * 4.35;
    const cy = 3.52 + Math.floor(i / 3) * 0.95;
    card(sl, cx, cy, 4.1, 0.82, "FFFBF0");
    sl.addText(r.icon + " " + r.cond, { x: cx + 0.12, y: cy + 0.05, w: 3.8, h: 0.32, fontSize: 10, bold: true, color: "8B4500" });
    sl.addText(r.mod, { x: cx + 0.12, y: cy + 0.4, w: 3.8, h: 0.35, fontSize: 9, color: C.darkText, wrap: true });
  });

  // Bottom note
  card(sl, 0.4, 5.5, 12.8, 0.72, C.navy);
  sl.addText("📌  Remember: When in doubt, CONSULT first — don't assume ROM is safe just because it appears gentle. Always take history and check medical notes.", {
    x: 0.7, y: 5.55, w: 12.2, h: 0.6, fontSize: 10.5, color: C.white, italic: true
  });

  footerBar(sl);
}

// ═══════════════════════════════════════════════════════════════
// SLIDE 13: SUMMARY / CONCLUSION
// ═══════════════════════════════════════════════════════════════
{
  const sl = pres.addSlide();
  darkBg(sl);

  // Teal left bar
  sl.addShape(pres.shapes.RECTANGLE, { x: 0, y: 0, w: 0.18, h: "100%", fill: { color: C.teal }, line: { color: C.teal } });

  pill(sl, 0.5, 0.3, 2.2, "SUMMARY", C.teal);
  sl.addText("Key Takeaways", {
    x: 0.5, y: 0.78, w: 12, h: 0.75,
    fontSize: 38, bold: true, color: C.white, fontFace: "Calibri"
  });

  // Takeaway cards
  const takeaways = [
    { n: "01", title: "3 Types", body: "Passive → Active-Assisted → Active. Progress based on patient's muscle strength and recovery stage.", color: C.tealDark },
    { n: "02", title: "Move Daily", body: "Joint stiffness begins in as little as 3 days of immobility. Early ROM is critical for all bedridden patients.", color: "1B4D3E" },
    { n: "03", title: "Pain = STOP", body: "Sharp pain, numbness, or resistance = immediate stop. ROM should cause mild discomfort at most, never sharp pain.", color: "4A235A" },
    { n: "04", title: "Know Limits", body: "Contraindicated in DVT, acute fracture, septic arthritis. Always assess before performing.", color: "5C2E00" },
  ];
  takeaways.forEach((t, i) => {
    const cx = 0.5 + (i % 2) * 6.5;
    const cy = 1.75 + Math.floor(i / 2) * 2.05;
    slide_card(sl, cx, cy, 6.2, 1.85, t.color);

    sl.addText(t.n, { x: cx + 0.15, y: cy + 0.1, w: 0.85, h: 0.8, fontSize: 30, bold: true, color: C.teal, fontFace: "Calibri" });
    sl.addText(t.title, { x: cx + 1.1, y: cy + 0.12, w: 4.9, h: 0.5, fontSize: 18, bold: true, color: C.white });
    sl.addText(t.body, { x: cx + 1.1, y: cy + 0.72, w: 4.9, h: 0.95, fontSize: 10.5, color: C.lightGray, wrap: true });
  });

  // Final quote
  sl.addShape(pres.shapes.RECTANGLE, { x: 0.5, y: 5.92, w: 12.3, h: 0.03, fill: { color: C.teal }, line: { color: C.teal } });
  sl.addText('"Move it or Lose it — Regular ROM Exercises are the foundation of mobility, recovery, and quality of life."', {
    x: 0.5, y: 6.0, w: 12.3, h: 0.55,
    fontSize: 13, italic: true, color: C.tealLight, align: "center"
  });
  sl.addText("— Physiotherapy Department  |  June 2026", {
    x: 0.5, y: 6.55, w: 12.3, h: 0.35,
    fontSize: 10, color: C.gray, align: "center"
  });

  footerBar(sl);
}

// ═══════════════════════════════════════════════════════════════
// SAVE FILE
// ═══════════════════════════════════════════════════════════════
pres.writeFile({ fileName: "/home/daytona/workspace/rom-ppt/ROM_Exercises_Presentation.pptx" })
  .then(() => console.log("✅ Presentation saved: ROM_Exercises_Presentation.pptx"))
  .catch(err => console.error("❌ Error:", err));