const pptxgen = require("pptxgenjs");

const pres = new pptxgen();
pres.layout = "LAYOUT_WIDE";
pres.title = "Ergonomics & Physiotherapy Session – Radiology & Patient Care";
pres.author = "Physiotherapy Department";

// ─────────────────────────────────────────────
// COLOR PALETTE
// ─────────────────────────────────────────────
const C = {
  navy:    "0A2342",   // dominant dark background
  teal:    "0E7C7B",   // accent panels
  aqua:    "17BEBB",   // highlights / icons
  white:   "FFFFFF",
  offWhite:"F0F4F8",
  amber:   "F4A261",   // warm alert / warning
  lightGray:"D9E6F2",
  midGray: "7B9CBF",
  text:    "1A2E4A",
};

// ─────────────────────────────────────────────
// HELPERS
// ─────────────────────────────────────────────
function addSectionBg(slide, color = C.navy) {
  slide.addShape(pres.ShapeType.rect, { x: 0, y: 0, w: 13.3, h: 7.5, fill: { color } });
}

function addTopBand(slide, color = C.teal, h = 1.1) {
  slide.addShape(pres.ShapeType.rect, { x: 0, y: 0, w: 13.3, h, fill: { color } });
}

function addBottomBand(slide, color = C.navy, h = 0.45) {
  slide.addShape(pres.ShapeType.rect, { x: 0, y: 7.5 - h, w: 13.3, h, fill: { color } });
}

function addCard(slide, x, y, w, h, fillColor = C.lightGray, radius = 0.12) {
  slide.addShape(pres.ShapeType.roundRect, {
    x, y, w, h,
    fill: { color: fillColor },
    rectRadius: radius,
    line: { color: fillColor },
  });
}

function slideTitle(slide, title, subtitle = "", titleColor = C.white) {
  addTopBand(slide, C.teal, subtitle ? 1.4 : 1.0);
  slide.addText(title, {
    x: 0.45, y: 0.1, w: 12.4, h: 0.75,
    fontSize: 24, bold: true, color: titleColor, fontFace: "Calibri",
    margin: 0,
  });
  if (subtitle) {
    slide.addText(subtitle, {
      x: 0.45, y: 0.78, w: 12.4, h: 0.5,
      fontSize: 14, color: C.offWhite, fontFace: "Calibri", italic: true, margin: 0,
    });
  }
  addBottomBand(slide, C.navy, 0.38);
  slide.addText("Ergonomics & Physiotherapy | Radiology & Patient Care Dept.", {
    x: 0.3, y: 7.16, w: 12.7, h: 0.3,
    fontSize: 9, color: C.midGray, fontFace: "Calibri", margin: 0,
  });
}

// ─────────────────────────────────────────────
// SLIDE 1 — TITLE SLIDE
// ─────────────────────────────────────────────
{
  const s = pres.addSlide();
  addSectionBg(s, C.navy);

  // Left accent stripe
  s.addShape(pres.ShapeType.rect, { x: 0, y: 0, w: 0.18, h: 7.5, fill: { color: C.aqua } });

  // Decorative circles (background)
  s.addShape(pres.ShapeType.ellipse, { x: 9.5, y: -1.2, w: 5.5, h: 5.5, fill: { color: C.teal }, line: { color: C.teal } });
  s.addShape(pres.ShapeType.ellipse, { x: 10.5, y: 4.0, w: 3.8, h: 3.8, fill: { color: "0B5959" }, line: { color: "0B5959" } });

  // Main heading
  s.addText("ERGONOMICS &", {
    x: 0.7, y: 1.2, w: 9, h: 0.95,
    fontSize: 46, bold: true, color: C.white, fontFace: "Calibri",
    charSpacing: 3, margin: 0,
  });
  s.addText("PHYSIOTHERAPY SESSION", {
    x: 0.7, y: 2.0, w: 10, h: 0.95,
    fontSize: 42, bold: true, color: C.aqua, fontFace: "Calibri",
    charSpacing: 2, margin: 0,
  });

  // Divider line
  s.addShape(pres.ShapeType.rect, { x: 0.7, y: 3.1, w: 7.5, h: 0.045, fill: { color: C.amber } });

  // Subtitle
  s.addText("Radiology Department  |  Patient Care Department", {
    x: 0.7, y: 3.3, w: 9.5, h: 0.5,
    fontSize: 18, color: C.offWhite, fontFace: "Calibri", margin: 0,
  });
  s.addText("Staff working in prolonged standing & walking roles", {
    x: 0.7, y: 3.75, w: 9.5, h: 0.45,
    fontSize: 15, color: C.midGray, fontFace: "Calibri", italic: true, margin: 0,
  });

  // Info pills
  const pills = [
    { icon: "🗓", label: "June 2026" },
    { icon: "⏱", label: "~60 min Session" },
    { icon: "🏥", label: "Hospital Setting" },
  ];
  pills.forEach((p, i) => {
    addCard(s, 0.7 + i * 2.95, 4.7, 2.7, 0.65, "0B3A6A");
    s.addText(`${p.icon}  ${p.label}`, {
      x: 0.75 + i * 2.95, y: 4.74, w: 2.6, h: 0.57,
      fontSize: 13, color: C.offWhite, fontFace: "Calibri",
      align: "center", valign: "middle", margin: 0,
    });
  });

  // Bottom tag
  s.addText("Physiotherapy Department  –  Occupational Health & Wellness", {
    x: 0.7, y: 6.85, w: 10, h: 0.35,
    fontSize: 10, color: C.midGray, fontFace: "Calibri", italic: true, margin: 0,
  });
}

// ─────────────────────────────────────────────
// SLIDE 2 — SESSION OVERVIEW / AGENDA
// ─────────────────────────────────────────────
{
  const s = pres.addSlide();
  s.addShape(pres.ShapeType.rect, { x: 0, y: 0, w: 13.3, h: 7.5, fill: { color: C.offWhite } });
  slideTitle(s, "Session Overview", "What we will cover today");

  const items = [
    { num: "01", topic: "Why Ergonomics Matters in Your Department", time: "5 min" },
    { num: "02", topic: "Common Injuries from Prolonged Standing & Walking", time: "8 min" },
    { num: "03", topic: "Ergonomic Principles & Workplace Adjustments", time: "12 min" },
    { num: "04", topic: "Posture Correction & Body Mechanics", time: "10 min" },
    { num: "05", topic: "Practical Stretching & Exercise Programme", time: "15 min" },
    { num: "06", topic: "Footwear, Flooring & Equipment Guidance", time: "5 min" },
    { num: "07", topic: "Recovery & Self-Care Strategies", time: "5 min" },
  ];

  items.forEach((item, i) => {
    const col = i < 4 ? 0 : 1;
    const row = i < 4 ? i : i - 4;
    const x = col === 0 ? 0.4 : 6.85;
    const y = 1.65 + row * 1.35;

    // Card bg
    addCard(s, x, y, 6.1, 1.1, C.white);
    // Number badge
    s.addShape(pres.ShapeType.roundRect, {
      x: x + 0.12, y: y + 0.18, w: 0.62, h: 0.62,
      fill: { color: C.teal }, rectRadius: 0.08, line: { color: C.teal },
    });
    s.addText(item.num, {
      x: x + 0.12, y: y + 0.18, w: 0.62, h: 0.62,
      fontSize: 13, bold: true, color: C.white,
      align: "center", valign: "middle", fontFace: "Calibri", margin: 0,
    });
    // Topic text
    s.addText(item.topic, {
      x: x + 0.88, y: y + 0.12, w: 4.7, h: 0.6,
      fontSize: 13, bold: true, color: C.text, fontFace: "Calibri", margin: 0,
    });
    // Time badge
    s.addShape(pres.ShapeType.roundRect, {
      x: x + 4.8, y: y + 0.65, w: 1.1, h: 0.32,
      fill: { color: C.amber }, rectRadius: 0.05, line: { color: C.amber },
    });
    s.addText(`⏱ ${item.time}`, {
      x: x + 4.8, y: y + 0.64, w: 1.1, h: 0.33,
      fontSize: 9.5, color: C.navy, fontFace: "Calibri",
      align: "center", valign: "middle", margin: 0,
    });
  });
}

// ─────────────────────────────────────────────
// SLIDE 3 — WHY ERGONOMICS MATTERS
// ─────────────────────────────────────────────
{
  const s = pres.addSlide();
  s.addShape(pres.ShapeType.rect, { x: 0, y: 0, w: 13.3, h: 7.5, fill: { color: C.offWhite } });
  slideTitle(s, "Why Ergonomics Matters", "The cost of ignoring workplace posture");

  const stats = [
    { val: "60–80%", label: "of healthcare workers report back pain at some point in their career" },
    { val: "Top 3", label: "MSDs are among the top 3 causes of sick leave in hospital settings" },
    { val: "6–8 hrs", label: "average continuous standing time for radiology & ward staff per shift" },
    { val: "40%↑", label: "increased injury risk with every 1 hour added of uninterrupted standing" },
  ];

  stats.forEach((st, i) => {
    const x = 0.4 + (i % 2) * 6.45;
    const y = 1.6 + Math.floor(i / 2) * 2.5;
    addCard(s, x, y, 6.0, 2.1, C.white);
    s.addShape(pres.ShapeType.rect, { x, y, w: 0.12, h: 2.1, fill: { color: C.teal } });
    s.addText(st.val, {
      x: x + 0.3, y: y + 0.2, w: 5.5, h: 0.9,
      fontSize: 34, bold: true, color: C.teal, fontFace: "Calibri", margin: 0,
    });
    s.addText(st.label, {
      x: x + 0.3, y: y + 1.05, w: 5.5, h: 0.85,
      fontSize: 13, color: C.text, fontFace: "Calibri", margin: 0,
    });
  });
}

// ─────────────────────────────────────────────
// SLIDE 4 — COMMON INJURIES (Anatomy overview)
// ─────────────────────────────────────────────
{
  const s = pres.addSlide();
  s.addShape(pres.ShapeType.rect, { x: 0, y: 0, w: 13.3, h: 7.5, fill: { color: C.offWhite } });
  slideTitle(s, "Common Work-Related Injuries", "Areas most affected in standing & walking roles");

  const zones = [
    {
      region: "Neck & Shoulders",
      icon: "🔵",
      color: "D0ECF5",
      accent: "2196A6",
      issues: ["Neck muscle fatigue & tension", "Cervical strain from poor head posture", "Shoulder impingement (reaching/bending)"],
    },
    {
      region: "Lower Back",
      icon: "🟠",
      color: "FDE8D0",
      accent: C.amber,
      issues: ["Lumbar disc stress", "Facet joint irritation", "Muscle strain (erector spinae)"],
    },
    {
      region: "Knees & Legs",
      icon: "🟢",
      color: "D5F2E3",
      accent: "2E9E62",
      issues: ["Knee osteoarthritis onset", "Varicose veins & leg swelling", "Patellofemoral pain syndrome"],
    },
    {
      region: "Feet & Ankles",
      icon: "🟣",
      color: "E8D5F5",
      accent: "7C4DCC",
      issues: ["Plantar fasciitis", "Ankle swelling & tendinopathy", "Metatarsalgia (forefoot pain)"],
    },
  ];

  zones.forEach((z, i) => {
    const x = 0.35 + i * 3.2;
    addCard(s, x, 1.55, 2.9, 5.45, z.color);
    s.addShape(pres.ShapeType.rect, { x, y: 1.55, w: 2.9, h: 0.06, fill: { color: z.accent } });

    s.addText(z.region, {
      x: x + 0.15, y: 1.7, w: 2.6, h: 0.55,
      fontSize: 14, bold: true, color: z.accent, fontFace: "Calibri", margin: 0,
    });

    z.issues.forEach((issue, j) => {
      s.addText([
        { text: "▸ ", options: { color: z.accent, bold: true } },
        { text: issue, options: { color: C.text } },
      ], {
        x: x + 0.15, y: 2.45 + j * 0.78, w: 2.62, h: 0.68,
        fontSize: 12, fontFace: "Calibri", margin: 0,
      });
    });

    // Risk label
    addCard(s, x + 0.15, 6.5, 2.55, 0.35, z.accent);
    s.addText("HIGH RISK AREA", {
      x: x + 0.15, y: 6.5, w: 2.55, h: 0.35,
      fontSize: 9.5, bold: true, color: C.white, fontFace: "Calibri",
      align: "center", valign: "middle", margin: 0,
    });
  });
}

// ─────────────────────────────────────────────
// SLIDE 5 — ERGONOMIC PRINCIPLES
// ─────────────────────────────────────────────
{
  const s = pres.addSlide();
  s.addShape(pres.ShapeType.rect, { x: 0, y: 0, w: 13.3, h: 7.5, fill: { color: C.offWhite } });
  slideTitle(s, "Ergonomic Principles at Work", "Fit the job to the person, not the person to the job");

  const principles = [
    { icon: "📏", title: "Work Surface Height", tip: "Adjust surfaces to elbow height. For radiology consoles & nursing stations, the surface should sit 2–5 cm below the elbow when standing." },
    { icon: "🦶", title: "Anti-Fatigue Matting", tip: "Use gel or foam anti-fatigue mats at fixed workstations (reporting rooms, medication bays). Reduces lower limb fatigue by up to 35%." },
    { icon: "🪑", title: "Sit-Stand Variation", tip: "Alternate sitting and standing every 20–30 minutes. Use sit-stand stools at imaging workstations when possible." },
    { icon: "📦", title: "Reach Zone Management", tip: "Keep frequently used items within the primary reach zone (arm length). Avoid twisting or over-reaching for equipment." },
    { icon: "💡", title: "Lighting & Screens", tip: "Position monitors at eye level; top of screen at or slightly below eye level. Reduce glare for radiology PACS screens to prevent forward head posture." },
    { icon: "🔄", title: "Task Rotation", tip: "Rotate between high-load and low-load tasks every 45–60 min. In patient care, alternate patient transfer duties with admin tasks." },
  ];

  principles.forEach((p, i) => {
    const col = i % 3;
    const row = Math.floor(i / 3);
    const x = 0.3 + col * 4.35;
    const y = 1.55 + row * 2.7;

    addCard(s, x, y, 4.1, 2.4, C.white);
    // Top color bar
    s.addShape(pres.ShapeType.rect, { x, y, w: 4.1, h: 0.07, fill: { color: C.aqua } });

    s.addText(p.icon + "  " + p.title, {
      x: x + 0.18, y: y + 0.15, w: 3.72, h: 0.52,
      fontSize: 13, bold: true, color: C.teal, fontFace: "Calibri", margin: 0,
    });
    s.addShape(pres.ShapeType.rect, { x: x + 0.18, y: y + 0.72, w: 3.5, h: 0.025, fill: { color: C.lightGray } });
    s.addText(p.tip, {
      x: x + 0.18, y: y + 0.82, w: 3.74, h: 1.45,
      fontSize: 11, color: C.text, fontFace: "Calibri", margin: 0,
    });
  });
}

// ─────────────────────────────────────────────
// SLIDE 6 — POSTURE & BODY MECHANICS
// ─────────────────────────────────────────────
{
  const s = pres.addSlide();
  s.addShape(pres.ShapeType.rect, { x: 0, y: 0, w: 13.3, h: 7.5, fill: { color: C.offWhite } });
  slideTitle(s, "Posture & Body Mechanics", "The neutral spine principle");

  // Left side: Ideal posture checklist
  addCard(s, 0.35, 1.55, 5.8, 5.5, C.white);
  s.addShape(pres.ShapeType.rect, { x: 0.35, y: 1.55, w: 5.8, h: 0.07, fill: { color: C.teal } });
  s.addText("✅  Ideal Standing Posture Checklist", {
    x: 0.5, y: 1.65, w: 5.5, h: 0.52,
    fontSize: 14, bold: true, color: C.teal, fontFace: "Calibri", margin: 0,
  });

  const checks = [
    "Head directly above shoulders (chin slightly tucked)",
    "Ears aligned over the mid-shoulder",
    "Shoulders relaxed – not elevated or rolled forward",
    "Core lightly engaged – do not tuck pelvis excessively",
    "Natural lumbar curve maintained (slight inward curve)",
    "Knees soft – not locked in full extension",
    "Weight evenly distributed on both feet",
    "Feet hip-width apart, toes facing forward",
  ];
  checks.forEach((c, i) => {
    s.addText([
      { text: "✔ ", options: { color: C.teal, bold: true } },
      { text: c, options: { color: C.text } },
    ], {
      x: 0.5, y: 2.3 + i * 0.55, w: 5.5, h: 0.5,
      fontSize: 11.5, fontFace: "Calibri", margin: 0,
    });
  });

  // Right side: What to avoid
  addCard(s, 6.6, 1.55, 6.4, 2.55, "FDE8D0");
  s.addShape(pres.ShapeType.rect, { x: 6.6, y: 1.55, w: 6.4, h: 0.07, fill: { color: C.amber } });
  s.addText("❌  Common Postural Faults", {
    x: 6.75, y: 1.65, w: 6.1, h: 0.52,
    fontSize: 14, bold: true, color: "C04C0A", fontFace: "Calibri", margin: 0,
  });
  const faults = [
    "Forward head posture (\"tech neck\")",
    "Swayback / excessive lumbar lordosis",
    "Locking knees while standing",
    "Shifting weight to one hip repetitively",
    "Leaning on workstation for prolonged periods",
  ];
  faults.forEach((f, i) => {
    s.addText([
      { text: "✗ ", options: { color: C.amber, bold: true } },
      { text: f, options: { color: C.text } },
    ], {
      x: 6.75, y: 2.3 + i * 0.48, w: 6.1, h: 0.44,
      fontSize: 11.5, fontFace: "Calibri", margin: 0,
    });
  });

  // Right bottom: Patient handling
  addCard(s, 6.6, 4.3, 6.4, 2.7, "D0ECF5");
  s.addShape(pres.ShapeType.rect, { x: 6.6, y: 4.3, w: 6.4, h: 0.07, fill: { color: C.teal } });
  s.addText("🏥  Patient Handling Mechanics", {
    x: 6.75, y: 4.4, w: 6.1, h: 0.52,
    fontSize: 14, bold: true, color: C.teal, fontFace: "Calibri", margin: 0,
  });
  const handling = [
    "Always bend at the hips & knees – not the back",
    "Keep load close to your body when transferring patients",
    "Use mechanical aids (hoists, slide sheets) for transfers > 16 kg",
    "Communicate clearly with colleagues before any lift",
    "Never twist your back – pivot using your feet",
  ];
  handling.forEach((h, i) => {
    s.addText([
      { text: "▸ ", options: { color: C.teal, bold: true } },
      { text: h, options: { color: C.text } },
    ], {
      x: 6.75, y: 4.95 + i * 0.47, w: 6.1, h: 0.43,
      fontSize: 11.5, fontFace: "Calibri", margin: 0,
    });
  });
}

// ─────────────────────────────────────────────
// SLIDE 7 — STRETCHING PROGRAMME (Part 1)
// ─────────────────────────────────────────────
{
  const s = pres.addSlide();
  s.addShape(pres.ShapeType.rect, { x: 0, y: 0, w: 13.3, h: 7.5, fill: { color: C.offWhite } });
  slideTitle(s, "Stretching & Exercise Programme – Part 1", "Do these stretches during micro-breaks (every 45–60 min)");

  const stretches = [
    {
      name: "Calf Raises",
      muscle: "Calves / Ankles",
      color: "D5F2E3",
      accent: "2E9E62",
      steps: ["Stand with feet hip-width apart", "Rise onto tiptoes slowly", "Hold 2 seconds, lower slowly", "10–15 reps × 2 sets"],
      benefit: "Activates calf muscle pump – reduces leg swelling & varicose vein risk",
    },
    {
      name: "Standing Hip Flexor Stretch",
      muscle: "Hip Flexors / Lumbar",
      color: "D0ECF5",
      accent: "2196A6",
      steps: ["Step one foot forward into a lunge", "Keep back knee straight, push hips forward", "Feel stretch at front of back hip", "Hold 20–30 sec, switch sides"],
      benefit: "Counteracts hip flexor tightening from prolonged standing",
    },
    {
      name: "Thoracic Extension",
      muscle: "Upper Back / Spine",
      color: "E8D5F5",
      accent: "7C4DCC",
      steps: ["Clasp hands behind head", "Gently arch backwards, looking upward", "Hold 10–15 sec, slowly return", "Repeat 5 times"],
      benefit: "Relieves thoracic kyphosis and upper back fatigue",
    },
    {
      name: "Neck Side Tilt",
      muscle: "Cervical Spine / Trapezius",
      color: "FDE8D0",
      accent: C.amber,
      steps: ["Sit or stand with spine upright", "Tilt head to right, ear towards shoulder", "Use hand to gently increase stretch", "20–30 sec each side"],
      benefit: "Releases upper trapezius tension from screen work & patient care",
    },
  ];

  stretches.forEach((st, i) => {
    const x = 0.3 + i * 3.2;
    addCard(s, x, 1.55, 2.95, 5.5, st.color);
    s.addShape(pres.ShapeType.rect, { x, y: 1.55, w: 2.95, h: 0.07, fill: { color: st.accent } });

    s.addText(st.name, {
      x: x + 0.15, y: 1.65, w: 2.68, h: 0.55,
      fontSize: 13, bold: true, color: st.accent, fontFace: "Calibri", margin: 0,
    });
    s.addText("Target: " + st.muscle, {
      x: x + 0.15, y: 2.2, w: 2.68, h: 0.38,
      fontSize: 10, color: C.text, italic: true, fontFace: "Calibri", margin: 0,
    });

    st.steps.forEach((step, j) => {
      s.addText([
        { text: `${j + 1}. `, options: { bold: true, color: st.accent } },
        { text: step, options: { color: C.text } },
      ], {
        x: x + 0.15, y: 2.65 + j * 0.62, w: 2.68, h: 0.57,
        fontSize: 11, fontFace: "Calibri", margin: 0,
      });
    });

    // Benefit tag at bottom
    addCard(s, x + 0.1, 6.27, 2.75, 0.67, st.accent);
    s.addText("💡 " + st.benefit, {
      x: x + 0.12, y: 6.27, w: 2.73, h: 0.67,
      fontSize: 9, color: C.white, fontFace: "Calibri",
      align: "center", valign: "middle", margin: 4,
    });
  });
}

// ─────────────────────────────────────────────
// SLIDE 8 — STRETCHING PROGRAMME (Part 2)
// ─────────────────────────────────────────────
{
  const s = pres.addSlide();
  s.addShape(pres.ShapeType.rect, { x: 0, y: 0, w: 13.3, h: 7.5, fill: { color: C.offWhite } });
  slideTitle(s, "Stretching & Exercise Programme – Part 2", "Strengthening exercises to be done 3× per week");

  const exercises = [
    {
      name: "Wall Squat",
      muscle: "Quadriceps / Glutes",
      color: "D5F2E3",
      accent: "2E9E62",
      steps: ["Stand with back against wall", "Slide down until thighs are parallel to floor", "Hold 20–40 seconds", "3 sets of 10–12 reps"],
      benefit: "Strengthens legs – reduces fatigue during long standing shifts",
    },
    {
      name: "Glute Bridges",
      muscle: "Glutes / Core",
      color: "D0ECF5",
      accent: "2196A6",
      steps: ["Lie on back, knees bent, feet flat", "Push through heels, lift hips to ceiling", "Squeeze glutes at the top", "Hold 3 sec, lower slowly – 15 reps"],
      benefit: "Key for pelvic stability and reducing lower back load",
    },
    {
      name: "Bird-Dog",
      muscle: "Core / Lumbar Stabilisers",
      color: "E8D5F5",
      accent: "7C4DCC",
      steps: ["Start on all fours (hands & knees)", "Extend opposite arm and leg together", "Hold 5 seconds, keep spine neutral", "10 reps each side"],
      benefit: "Builds deep core stability without spinal compression",
    },
    {
      name: "Ankle Circles & Foot Rolls",
      muscle: "Feet / Ankles",
      color: "FDE8D0",
      accent: C.amber,
      steps: ["Sit or stand on one leg", "Rotate ankle clockwise 10×", "Rotate anticlockwise 10×", "Roll foot on a tennis ball 60 sec"],
      benefit: "Prevents plantar fasciitis and ankle stiffness",
    },
  ];

  exercises.forEach((ex, i) => {
    const x = 0.3 + i * 3.2;
    addCard(s, x, 1.55, 2.95, 5.5, ex.color);
    s.addShape(pres.ShapeType.rect, { x, y: 1.55, w: 2.95, h: 0.07, fill: { color: ex.accent } });

    s.addText(ex.name, {
      x: x + 0.15, y: 1.65, w: 2.68, h: 0.55,
      fontSize: 13, bold: true, color: ex.accent, fontFace: "Calibri", margin: 0,
    });
    s.addText("Target: " + ex.muscle, {
      x: x + 0.15, y: 2.2, w: 2.68, h: 0.38,
      fontSize: 10, color: C.text, italic: true, fontFace: "Calibri", margin: 0,
    });

    ex.steps.forEach((step, j) => {
      s.addText([
        { text: `${j + 1}. `, options: { bold: true, color: ex.accent } },
        { text: step, options: { color: C.text } },
      ], {
        x: x + 0.15, y: 2.65 + j * 0.62, w: 2.68, h: 0.57,
        fontSize: 11, fontFace: "Calibri", margin: 0,
      });
    });

    addCard(s, x + 0.1, 6.27, 2.75, 0.67, ex.accent);
    s.addText("💡 " + ex.benefit, {
      x: x + 0.12, y: 6.27, w: 2.73, h: 0.67,
      fontSize: 9, color: C.white, fontFace: "Calibri",
      align: "center", valign: "middle", margin: 4,
    });
  });
}

// ─────────────────────────────────────────────
// SLIDE 9 — MICRO-BREAK PROTOCOL
// ─────────────────────────────────────────────
{
  const s = pres.addSlide();
  s.addShape(pres.ShapeType.rect, { x: 0, y: 0, w: 13.3, h: 7.5, fill: { color: C.offWhite } });
  slideTitle(s, "The Micro-Break Protocol", "Small breaks = big protection against injury");

  // Timeline / schedule
  const schedule = [
    { time: "0 – 20 min", action: "Begin shift standing", color: C.teal, tip: "Use anti-fatigue mat. Maintain neutral posture." },
    { time: "20 min mark", action: "Micro-break #1", color: C.aqua, tip: "Calf raises × 15. Shoulder rolls × 10." },
    { time: "40 min mark", action: "Posture reset", color: C.teal, tip: "Check your posture. Shift weight if on one leg." },
    { time: "60 min mark", action: "Active micro-break #2", color: C.aqua, tip: "Neck stretch + Thoracic extension × 5 each." },
    { time: "90 min mark", action: "SIT DOWN", color: C.amber, tip: "If possible: sit for 5–10 minutes. Elevate feet slightly." },
    { time: "120 min mark", action: "Walking reset", color: C.teal, tip: "Take a short 3–5 min walk. Hydrate." },
  ];

  schedule.forEach((item, i) => {
    const y = 1.6 + i * 0.95;
    // Timeline dot
    s.addShape(pres.ShapeType.ellipse, {
      x: 0.55, y: y + 0.2, w: 0.45, h: 0.45,
      fill: { color: item.color }, line: { color: item.color },
    });
    // Connecting line (not for last item)
    if (i < schedule.length - 1) {
      s.addShape(pres.ShapeType.rect, {
        x: 0.74, y: y + 0.65, w: 0.07, h: 0.47,
        fill: { color: item.color },
      });
    }
    // Time label
    addCard(s, 1.2, y + 0.1, 1.7, 0.42, item.color);
    s.addText(item.time, {
      x: 1.22, y: y + 0.1, w: 1.66, h: 0.42,
      fontSize: 10.5, bold: true, color: C.white, fontFace: "Calibri",
      align: "center", valign: "middle", margin: 0,
    });
    // Action card
    addCard(s, 3.1, y + 0.05, 3.5, 0.65, C.white);
    s.addText(item.action, {
      x: 3.2, y: y + 0.08, w: 3.3, h: 0.55,
      fontSize: 13, bold: true, color: C.text, fontFace: "Calibri",
      valign: "middle", margin: 0,
    });
    // Tip card
    addCard(s, 6.85, y + 0.05, 6.1, 0.65, "EDF6F6");
    s.addText("💬  " + item.tip, {
      x: 6.95, y: y + 0.08, w: 5.88, h: 0.55,
      fontSize: 11.5, color: C.text, fontFace: "Calibri",
      valign: "middle", margin: 0,
    });
  });
}

// ─────────────────────────────────────────────
// SLIDE 10 — FOOTWEAR & FLOORING
// ─────────────────────────────────────────────
{
  const s = pres.addSlide();
  s.addShape(pres.ShapeType.rect, { x: 0, y: 0, w: 13.3, h: 7.5, fill: { color: C.offWhite } });
  slideTitle(s, "Footwear, Flooring & Equipment", "Your feet are the foundation");

  // Footwear recommendations
  addCard(s, 0.35, 1.55, 6.0, 5.55, C.white);
  s.addShape(pres.ShapeType.rect, { x: 0.35, y: 1.55, w: 6.0, h: 0.07, fill: { color: C.teal } });
  s.addText("👟  Footwear Recommendations", {
    x: 0.5, y: 1.65, w: 5.7, h: 0.52,
    fontSize: 15, bold: true, color: C.teal, fontFace: "Calibri", margin: 0,
  });

  const footwear = [
    { label: "Arch Support", detail: "Choose shoes with firm arch support (orthotics if flat-footed). Avoid completely flat soles." },
    { label: "Cushioning", detail: "Adequate midsole cushioning reduces impact – especially on hard hospital tile floors." },
    { label: "Heel Height", detail: "Keep heel height to 1–3 cm maximum. Avoid completely flat and very high heels." },
    { label: "Fit", detail: "Shoes should fit snugly at the heel and have at least 1 cm space beyond the longest toe." },
    { label: "Compression Stockings", detail: "Class I (15–21 mmHg) graduated compression socks are recommended for shifts > 6 hrs. Reduces venous pooling by 30–40%." },
    { label: "Replacement", detail: "Replace work shoes every 6–12 months or when cushioning is visibly compressed." },
  ];
  footwear.forEach((f, i) => {
    s.addText([
      { text: f.label + ":  ", options: { bold: true, color: C.teal } },
      { text: f.detail, options: { color: C.text } },
    ], {
      x: 0.5, y: 2.3 + i * 0.72, w: 5.7, h: 0.65,
      fontSize: 11.5, fontFace: "Calibri", margin: 0,
    });
  });

  // Flooring & equipment
  addCard(s, 6.65, 1.55, 6.3, 2.6, "D5F2E3");
  s.addShape(pres.ShapeType.rect, { x: 6.65, y: 1.55, w: 6.3, h: 0.07, fill: { color: "2E9E62" } });
  s.addText("🏗  Flooring & Workstation Equipment", {
    x: 6.8, y: 1.65, w: 6.0, h: 0.52,
    fontSize: 14, bold: true, color: "2E9E62", fontFace: "Calibri", margin: 0,
  });
  const flooring = [
    "Anti-fatigue mats at fixed standing stations (min. 1.5 cm thick)",
    "Footrest rails at radiology reporting desks",
    "Height-adjustable worktops where available",
    "Sit-stand stools at imaging consoles",
  ];
  flooring.forEach((f, i) => {
    s.addText([
      { text: "✔ ", options: { color: "2E9E62", bold: true } },
      { text: f, options: { color: C.text } },
    ], {
      x: 6.8, y: 2.3 + i * 0.52, w: 5.98, h: 0.47,
      fontSize: 11.5, fontFace: "Calibri", margin: 0,
    });
  });

  // Radiology-specific
  addCard(s, 6.65, 4.35, 6.3, 2.7, "D0ECF5");
  s.addShape(pres.ShapeType.rect, { x: 6.65, y: 4.35, w: 6.3, h: 0.07, fill: { color: "2196A6" } });
  s.addText("🔬  Radiology-Specific Ergonomics", {
    x: 6.8, y: 4.45, w: 6.0, h: 0.52,
    fontSize: 14, bold: true, color: "2196A6", fontFace: "Calibri", margin: 0,
  });
  const radiology = [
    "PACS monitors at eye level to prevent forward head posture",
    "Mouse positioned within comfortable reach – no reaching",
    "Dimmed room: avoid hunching towards the screen",
    "Lead aprons: hang on proper stand, wear only when necessary",
    "Rotate between scan positioning (physical) & reporting (seated)",
  ];
  radiology.forEach((r, i) => {
    s.addText([
      { text: "▸ ", options: { color: "2196A6", bold: true } },
      { text: r, options: { color: C.text } },
    ], {
      x: 6.8, y: 5.05 + i * 0.46, w: 5.98, h: 0.42,
      fontSize: 11, fontFace: "Calibri", margin: 0,
    });
  });
}

// ─────────────────────────────────────────────
// SLIDE 11 — RECOVERY & SELF-CARE
// ─────────────────────────────────────────────
{
  const s = pres.addSlide();
  s.addShape(pres.ShapeType.rect, { x: 0, y: 0, w: 13.3, h: 7.5, fill: { color: C.offWhite } });
  slideTitle(s, "Recovery & Self-Care Strategies", "What you do after your shift matters just as much");

  const categories = [
    {
      icon: "💧", title: "Hydration",
      color: "D0ECF5", accent: "2196A6",
      points: [
        "Aim for 2–2.5 L of water per shift",
        "Dehydration increases muscle fatigue & cramping",
        "Avoid excess caffeine – acts as a diuretic",
      ],
    },
    {
      icon: "🦵", title: "Post-Shift Leg Recovery",
      color: "D5F2E3", accent: "2E9E62",
      points: [
        "Elevate legs 15–20 min after standing shifts",
        "Cold-water foot soak (10 min) reduces swelling",
        "Self-massage calf muscles upward (towards the heart)",
      ],
    },
    {
      icon: "😴", title: "Sleep & Rest",
      color: "E8D5F5", accent: "7C4DCC",
      points: [
        "7–9 hours of sleep for tissue repair",
        "Sleep with a pillow between knees if back sore",
        "Avoid screens 1 hour before bed to improve sleep quality",
      ],
    },
    {
      icon: "🏃", title: "Active Recovery",
      color: "FDE8D0", accent: C.amber,
      points: [
        "Light walking / swimming on days off",
        "Yoga or Pilates 2× per week (core & flexibility)",
        "Avoid sedentary rest – gentle movement heals faster",
      ],
    },
    {
      icon: "🍎", title: "Nutrition",
      color: "D0ECF5", accent: "2196A6",
      points: [
        "Anti-inflammatory diet: omega-3, leafy greens, berries",
        "Magnesium-rich foods (nuts, seeds) help muscle recovery",
        "Limit processed food – increases systemic inflammation",
      ],
    },
    {
      icon: "🚨", title: "When to Seek Help",
      color: "FDECEA", accent: "C0392B",
      points: [
        "Pain lasting > 2 weeks – see physiotherapist",
        "Radiating pain in legs or arms – urgent review",
        "Numbness or tingling – do not ignore",
      ],
    },
  ];

  categories.forEach((cat, i) => {
    const col = i % 3;
    const row = Math.floor(i / 3);
    const x = 0.3 + col * 4.35;
    const y = 1.55 + row * 2.7;

    addCard(s, x, y, 4.1, 2.4, cat.color);
    s.addShape(pres.ShapeType.rect, { x, y, w: 4.1, h: 0.07, fill: { color: cat.accent } });
    s.addText(`${cat.icon}  ${cat.title}`, {
      x: x + 0.18, y: y + 0.12, w: 3.72, h: 0.52,
      fontSize: 13, bold: true, color: cat.accent, fontFace: "Calibri", margin: 0,
    });
    cat.points.forEach((pt, j) => {
      s.addText([
        { text: "• ", options: { bold: true, color: cat.accent } },
        { text: pt, options: { color: C.text } },
      ], {
        x: x + 0.18, y: y + 0.72 + j * 0.52, w: 3.72, h: 0.48,
        fontSize: 11, fontFace: "Calibri", margin: 0,
      });
    });
  });
}

// ─────────────────────────────────────────────
// SLIDE 12 — DAILY ACTION PLAN (Summary)
// ─────────────────────────────────────────────
{
  const s = pres.addSlide();
  s.addShape(pres.ShapeType.rect, { x: 0, y: 0, w: 13.3, h: 7.5, fill: { color: C.offWhite } });
  slideTitle(s, "Your Daily Action Plan", "Simple habits that prevent injuries over time");

  const timeline = [
    {
      phase: "Before Shift",
      color: C.teal,
      light: "D0ECF5",
      items: [
        "Put on compression socks before starting",
        "Do 5 min light warm-up (leg swings, shoulder circles)",
        "Check footwear is appropriate",
        "Prepare your workstation to correct height",
      ],
    },
    {
      phase: "During Shift",
      color: "2E9E62",
      light: "D5F2E3",
      items: [
        "Micro-break every 45–60 min (stretch & posture reset)",
        "Rotate between tasks (physical vs. sedentary)",
        "Stay hydrated – 1 glass of water per hour",
        "Use anti-fatigue mat at standing stations",
      ],
    },
    {
      phase: "After Shift",
      color: "7C4DCC",
      light: "E8D5F5",
      items: [
        "Elevate legs for 15–20 min",
        "10 min cool-down stretching programme",
        "Self-massage calves and feet",
        "Report any new pain to supervisor / physiotherapist",
      ],
    },
  ];

  timeline.forEach((phase, i) => {
    const x = 0.3 + i * 4.35;
    addCard(s, x, 1.55, 4.15, 5.5, phase.light);
    s.addShape(pres.ShapeType.rect, { x, y: 1.55, w: 4.15, h: 0.07, fill: { color: phase.color } });
    s.addText(phase.phase, {
      x: x + 0.2, y: 1.65, w: 3.8, h: 0.6,
      fontSize: 18, bold: true, color: phase.color, fontFace: "Calibri", margin: 0,
    });
    phase.items.forEach((item, j) => {
      s.addText([
        { text: "✔ ", options: { bold: true, color: phase.color } },
        { text: item, options: { color: C.text } },
      ], {
        x: x + 0.2, y: 2.42 + j * 0.97, w: 3.78, h: 0.87,
        fontSize: 12, fontFace: "Calibri", margin: 0,
      });
    });
  });

  // Bottom motivation bar
  addCard(s, 0.3, 7.0, 12.7, 0.36, C.navy);
  s.addText("Remember: Your health is your most important asset. Invest in it daily.", {
    x: 0.35, y: 7.0, w: 12.6, h: 0.36,
    fontSize: 12, bold: true, color: C.aqua, fontFace: "Calibri",
    align: "center", valign: "middle", margin: 0,
  });
}

// ─────────────────────────────────────────────
// SLIDE 13 — CLOSING / THANK YOU
// ─────────────────────────────────────────────
{
  const s = pres.addSlide();
  addSectionBg(s, C.navy);

  s.addShape(pres.ShapeType.ellipse, { x: -1.0, y: -0.5, w: 6, h: 6, fill: { color: C.teal }, line: { color: C.teal } });
  s.addShape(pres.ShapeType.ellipse, { x: 10.5, y: 4.5, w: 4.5, h: 4.5, fill: { color: "0B3A6A" }, line: { color: "0B3A6A" } });

  s.addText("STAY STRONG,", {
    x: 1.2, y: 1.3, w: 11, h: 1.0,
    fontSize: 50, bold: true, color: C.white, fontFace: "Calibri",
    charSpacing: 5, align: "center", margin: 0,
  });
  s.addText("STAY HEALTHY.", {
    x: 1.2, y: 2.2, w: 11, h: 1.0,
    fontSize: 50, bold: true, color: C.aqua, fontFace: "Calibri",
    charSpacing: 5, align: "center", margin: 0,
  });

  s.addShape(pres.ShapeType.rect, { x: 3.5, y: 3.35, w: 6.3, h: 0.05, fill: { color: C.amber } });

  s.addText("Thank you for attending this session.", {
    x: 1.5, y: 3.55, w: 10.3, h: 0.52,
    fontSize: 17, color: C.offWhite, fontFace: "Calibri",
    align: "center", italic: true, margin: 0,
  });

  const contacts = [
    "📋  Complete the post-session feedback form",
    "🤝  Contact Physiotherapy for individual assessments",
    "📱  Scan QR code for the digital exercise booklet",
  ];
  contacts.forEach((c, i) => {
    s.addText(c, {
      x: 1.5, y: 4.3 + i * 0.65, w: 10.3, h: 0.55,
      fontSize: 15, color: C.lightGray, fontFace: "Calibri",
      align: "center", margin: 0,
    });
  });

  s.addText("Physiotherapy Department  |  Occupational Health & Wellness  |  June 2026", {
    x: 0.5, y: 7.0, w: 12.3, h: 0.35,
    fontSize: 9.5, color: C.midGray, fontFace: "Calibri",
    align: "center", margin: 0,
  });
}

// ─────────────────────────────────────────────
// SAVE
// ─────────────────────────────────────────────
pres.writeFile({ fileName: "/home/daytona/workspace/ergonomics-session/Ergonomics_Physiotherapy_Session.pptx" })
  .then(() => console.log("✅ PPTX saved successfully."))
  .catch(err => { console.error("❌ Error:", err); process.exit(1); });