<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>How Living Things Get Energy</title>
  <style>
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    body {
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      background: transparent;
      color: #1e293b;
      padding: 12px 10px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: flex-start;
      min-height: auto;
    }

    .header-title {
      text-align: center;
      margin-bottom: 12px;
    }

    .header-title h1 {
      font-size: 18px;
      font-weight: 800;
      color: #0f172a;
      letter-spacing: -0.01em;
    }

    .header-title p {
      font-size: 13px;
      color: #64748b;
      font-weight: 500;
      margin-top: 2px;
    }

    .main-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      width: 100%;
      max-width: 600px;
    }

    @media (max-width: 480px) {
      .main-grid {
        grid-template-columns: 1fr;
        gap: 10px;
      }
    }

    .panel-box {
      background: #ffffff;
      border: 2px solid #e2e8f0;
      border-radius: 16px;
      padding: 14px 12px;
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      position: relative;
      overflow: hidden;
      cursor: pointer;
      user-select: none;
      box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
      transition: border-color 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease;
    }

    .panel-box:hover {
      border-color: #cbd5e1;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    }

    .panel-box.active-animal {
      border-color: #ecc94b;
      background: #fffdf5;
      box-shadow: 0 0 0 3px rgba(236, 201, 75, 0.35);
    }

    .panel-box.active-plant {
      border-color: #48bb78;
      background: #f6fdf9;
      box-shadow: 0 0 0 3px rgba(72, 187, 120, 0.35);
    }

    /* Badges with high contrast text */
    .badge {
      font-size: 14px;
      font-weight: 800;
      padding: 5px 14px;
      border-radius: 20px;
      margin-bottom: 6px;
      display: inline-block;
      letter-spacing: 0.01em;
    }

    .badge-animal {
      background: #fef08a;
      color: #5a3804;
      border: 1px solid #facc15;
    }

    .badge-plant {
      background: #bbf7d0;
      color: #14532d;
      border: 1px solid #86efac;
    }

    .subtitle-note {
      font-size: 12px;
      color: #475569;
      font-weight: 600;
      margin-bottom: 4px;
      min-height: 18px;
    }

    .stage-area {
      height: 100px;
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: center;
      position: relative;
      margin: 4px 0;
    }

    /* Squirrel & Acorn Scene */
    .squirrel {
      font-size: 52px;
      line-height: 1;
      filter: drop-shadow(0 3px 4px rgba(0,0,0,0.1));
      transition: transform 0.4s ease;
    }

    .munching {
      animation: munch 0.7s ease-in-out infinite alternate;
    }

    @keyframes munch {
      0% { transform: translateY(0) rotate(0deg) scale(1); }
      50% { transform: translateY(-3px) rotate(-3deg) scale(1.05); }
      100% { transform: translateY(0) rotate(2deg) scale(1.02); }
    }

    .food-item {
      font-size: 26px;
      position: absolute;
      left: 26%;
      top: 50%;
      transform: translateY(-50%);
      filter: drop-shadow(0 2px 3px rgba(0,0,0,0.15));
      transition: opacity 0.4s ease;
    }

    .food-eaten {
      animation: eatAcorn 1.3s cubic-bezier(0.25, 1, 0.5, 1) forwards;
    }

    @keyframes eatAcorn {
      0% { left: 24%; opacity: 1; transform: translateY(-50%) scale(1); }
      40% { left: 42%; opacity: 1; transform: translateY(-50%) scale(1.15) rotate(15deg); }
      75% { left: 47%; opacity: 0.7; transform: translateY(-50%) scale(0.65) rotate(35deg); }
      100% { left: 49%; opacity: 0; transform: translateY(-50%) scale(0); }
    }

    /* Plant, Sun & Water Scene */
    .sun-source {
      position: absolute;
      top: 2px;
      left: 14px;
      font-size: 32px;
      filter: drop-shadow(0 0 6px rgba(236, 201, 75, 0.6));
      animation: sunGlow 2.4s ease-in-out infinite alternate;
    }

    @keyframes sunGlow {
      0% { transform: scale(0.94) rotate(-3deg); }
      100% { transform: scale(1.08) rotate(6deg); }
    }

    .sun-beam {
      position: absolute;
      top: 32px;
      left: 36px;
      width: 48px;
      height: 4px;
      background: linear-gradient(90deg, #ecc94b, rgba(236, 201, 75, 0));
      transform: rotate(32deg);
      border-radius: 3px;
      opacity: 0.85;
      animation: beamPulse 1.8s ease-in-out infinite alternate;
    }

    @keyframes beamPulse {
      0% { opacity: 0.35; transform: rotate(32deg) scaleX(0.75); }
      100% { opacity: 0.95; transform: rotate(32deg) scaleX(1.15); }
    }

    .water-drop {
      position: absolute;
      font-size: 18px;
      color: #22b7ff;
      opacity: 0;
      filter: drop-shadow(0 2px 2px rgba(34, 183, 255, 0.4));
    }

    .drop-1 {
      bottom: 22px;
      right: 22px;
      animation: rainDrop 2s ease-in-out infinite;
    }

    .drop-2 {
      bottom: 40px;
      right: 36px;
      animation: rainDrop 2s ease-in-out infinite 1s;
    }

    @keyframes rainDrop {
      0% { opacity: 0; transform: translateY(-14px); }
      35% { opacity: 1; }
      80% { opacity: 1; transform: translateY(6px); }
      100% { opacity: 0; transform: translateY(12px); }
    }

    .plant {
      font-size: 52px;
      line-height: 1;
      position: relative;
      z-index: 2;
      filter: drop-shadow(0 3px 4px rgba(0,0,0,0.1));
      transition: transform 0.4s ease;
    }

    .plant-thriving {
      animation: plantBounce 0.9s ease-in-out infinite alternate;
    }

    @keyframes plantBounce {
      0% { transform: scale(1) translateY(0); }
      100% { transform: scale(1.08) translateY(-4px); }
    }

    .arrow-flow {
      font-size: 16px;
      color: #64748b;
      margin: 2px 0 4px 0;
      font-weight: 700;
      display: flex;
      align-items: center;
      gap: 4px;
    }

    .battery-wrap {
      width: 100%;
      max-width: 190px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .battery-shell {
      flex: 1;
      height: 24px;
      background: #f1f5f9;
      border: 2px solid #475569;
      border-radius: 6px;
      padding: 2px;
      position: relative;
      display: flex;
      align-items: center;
      box-shadow: inset 0 1px 2px rgba(0,0,0,0.1);
    }

    .battery-shell::after {
      content: '';
      position: absolute;
      right: -6px;
      top: 5px;
      width: 3px;
      height: 10px;
      background: #475569;
      border-radius: 0 2px 2px 0;
    }

    .battery-fill {
      height: 100%;
      width: 0%;
      border-radius: 3px;
      transition: width 0.85s cubic-bezier(0.34, 1.3, 0.64, 1);
    }

    .fill-animal {
      background: linear-gradient(90deg, #ecc94b, #f6ad55);
      box-shadow: 0 0 8px rgba(236, 201, 75, 0.6);
    }

    .fill-plant {
      background: linear-gradient(90deg, #48bb78, #38a169);
      box-shadow: 0 0 8px rgba(72, 187, 120, 0.6);
    }

    .energy-label {
      font-size: 13px;
      font-weight: 800;
      min-width: 48px;
      color: #1e293b;
      text-align: left;
    }

    .sparkle {
      position: absolute;
      font-size: 18px;
      opacity: 0;
      pointer-events: none;
    }

    .sparkle.show {
      animation: popSparkle 0.9s ease-out forwards;
    }

    @keyframes popSparkle {
      0% { opacity: 0; transform: scale(0.3) rotate(0deg); }
      40% { opacity: 1; transform: scale(1.3) rotate(45deg); }
      100% { opacity: 0; transform: scale(0.8) translateY(-14px) rotate(90deg); }
    }

    .controls {
      margin-top: 12px;
      display: flex;
      justify-content: center;
      width: 100%;
    }

    .tap-hint {
      font-size: 12px;
      color: #334155;
      font-weight: 600;
      background: #f1f5f9;
      padding: 6px 14px;
      border-radius: 20px;
      border: 1px solid #cbd5e1;
      display: inline-flex;
      align-items: center;
      gap: 5px;
    }
  </style>
</head>
<body>

  <div class="header-title">
    <h1>How Living Things Get Energy</h1>
    <p>Compare how animals and plants fuel their bodies</p>
  </div>

  <div class="main-grid">
    
    <div class="panel-box" id="animalBox" onclick="chargeAnimal()">
      <div class="badge badge-animal">Animals Eat Food</div>
      <div class="subtitle-note">Consumers: eat for energy</div>
      <div class="stage-area">
        <div class="food-item" id="acorn">🌰</div>
        <div class="squirrel" id="squirrel">🐿️</div>
        <div class="sparkle" id="sp1" style="top:15px; right:28px;">✨</div>
      </div>
      <div class="arrow-flow"><span>⚡ Converts to Energy</span></div>
      <div class="battery-wrap">
        <div class="battery-shell">
          <div class="battery-fill fill-animal" id="batAnimal"></div>
        </div>
        <div class="energy-label" id="lblAnimal">0%</div>
      </div>
    </div>

    
    <div class="panel-box" id="plantBox" onclick="chargePlant()">
      <div class="badge badge-plant">Plants Make Food</div>
      <div class="subtitle-note">Producers: use sun & water</div>
      <div class="stage-area">
        <div class="sun-source">☀️</div>
        <div class="sun-beam"></div>
        <div class="water-drop drop-1">💧</div>
        <div class="water-drop drop-2">💧</div>
        <div class="plant" id="plant">🪴</div>
        <div class="sparkle" id="sp2" style="top:15px; right:24px;">✨</div>
      </div>
      <div class="arrow-flow"><span>⚡ Stores Energy</span></div>
      <div class="battery-wrap">
        <div class="battery-shell">
          <div class="battery-fill fill-plant" id="batPlant"></div>
        </div>
        <div class="energy-label" id="lblPlant">0%</div>
      </div>
    </div>
  </div>

  <div class="controls">
    <div class="tap-hint">👆 Tap either panel to see how energy is gained!</div>
  </div>

  <script>
    let animalTimer = null;
    let plantTimer = null;

    function animateCount(labelEl, targetVal, duration) {
      const start = 0;
      const startTime = performance.now();

      function update(now) {
        const elapsed = now - startTime;
        const progress = Math.min(elapsed / duration, 1);
        const current = Math.round(start + (targetVal - start) * progress);
        labelEl.textContent = current + '%';
        if (progress < 1) {
          requestAnimationFrame(update);
        }
      }
      requestAnimationFrame(update);
    }

    function chargeAnimal() {
      const box = document.getElementById('animalBox');
      const squirrel = document.getElementById('squirrel');
      const acorn = document.getElementById('acorn');
      const bat = document.getElementById('batAnimal');
      const lbl = document.getElementById('lblAnimal');
      const sp = document.getElementById('sp1');

      if (animalTimer) clearTimeout(animalTimer);

      box.classList.add('active-animal');
      acorn.classList.remove('food-eaten');
      void acorn.offsetWidth; // trigger reflow safely
      acorn.classList.add('food-eaten');

      squirrel.classList.add('munching');
      
      bat.style.width = '100%';
      animateCount(lbl, 100, 850);
      sp.classList.remove('show');
      void sp.offsetWidth;
      sp.classList.add('show');

      animalTimer = setTimeout(() => {
        squirrel.classList.remove('munching');
      }, 1500);
    }

    function chargePlant() {
      const box = document.getElementById('plantBox');
      const plant = document.getElementById('plant');
      const bat = document.getElementById('batPlant');
      const lbl = document.getElementById('lblPlant');
      const sp = document.getElementById('sp2');

      if (plantTimer) clearTimeout(plantTimer);

      box.classList.add('active-plant');
      plant.classList.remove('plant-thriving');
      void plant.offsetWidth;
      plant.classList.add('plant-thriving');

      bat.style.width = '100%';
      animateCount(lbl, 100, 850);
      sp.classList.remove('show');
      void sp.offsetWidth;
      sp.classList.add('show');

      plantTimer = setTimeout(() => {
        plant.classList.remove('plant-thriving');
      }, 1500);
    }

    // Gentle auto-start to demonstrate both sides smoothly on load
    window.addEventListener('load', () => {
      setTimeout(() => {
        chargeAnimal();
        setTimeout(() => {
          chargePlant();
        }, 700);
      }, 350);
    });
  </script>
</body>
</html>

Signs of Life: What Makes Something Alive

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta name="aspect-ratio" content="4:3">
  <title>Plant Growth & Movement</title>
  <script src="{{VENDOR_CDN}}/classace-diagram.js"></script>
  <style>
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-tap-highlight-color: transparent;
      user-select: none;
    }

    body {
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      background: transparent;
      color: #1e293b;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: space-between;
      height: 100%;
      min-height: 340px;
      max-height: 580px;
      padding: 8px;
      gap: 8px;
    }

    /* Controls Bar */
    .controls {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 4px;
      width: 100%;
      max-width: 480px;
    }

    .step-btn {
      flex: 1 1 0;
      min-width: 0;
      padding: 4px 2px;
      border: 1px solid #cbd5e1;
      background: #ffffff;
      border-radius: 10px;
      font-size: 10.5px;
      font-weight: 600;
      color: #475569;
      cursor: pointer;
      text-align: center;
      white-space: normal;
      line-height: 1.15;
      min-height: 32px;
      display: flex;
      align-items: center;
      justify-content: center;
      word-break: normal;
      transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
      box-shadow: 0 1px 2px rgba(0,0,0,0.04);
    }

    .step-btn:hover {
      background: #f8fafc;
      border-color: #94a3b8;
    }

    .step-btn.active {
      background: #0369a1;
      border-color: #0369a1;
      color: #ffffff;
      box-shadow: 0 2px 6px rgba(3, 105, 161, 0.35);
    }

    .play-btn {
      width: 32px;
      height: 32px;
      border-radius: 50%;
      border: 1px solid #cbd5e1;
      background: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      font-size: 13px;
      color: #0f172a;
      transition: background-color 0.2s ease, border-color 0.2s ease;
      flex-shrink: 0;
      box-shadow: 0 1px 2px rgba(0,0,0,0.04);
    }

    .play-btn:hover {
      background: #f1f5f9;
      border-color: #94a3b8;
    }

    @media (min-width: 400px) {
      .controls {
        gap: 6px;
      }
      .step-btn {
        padding: 6px 4px;
        font-size: 12px;
        border-radius: 16px;
        min-height: 34px;
      }
      .play-btn {
        width: 34px;
        height: 34px;
        font-size: 14px;
      }
    }

    /* Stage Scene Container */
    .scene-box {
      position: relative;
      width: 100%;
      max-width: 480px;
      flex: 1;
      min-height: 240px;
      border-radius: 14px;
      overflow: hidden;
      display: flex;
      flex-direction: column;
      box-shadow: inset 0 0 0 1px rgba(0,0,0,0.08);
      background-color: #e0f2fe;
    }

    svg.scene-svg {
      width: 100%;
      height: 100%;
      display: block;
    }

    /* Scene Elements Animation */
    .stage-group {
      transition: opacity 0.35s ease;
      opacity: 0;
      pointer-events: none;
    }

    .stage-group.active {
      opacity: 1;
      pointer-events: auto;
    }

    /* Sun Glow Animation */
    .sun-core {
      animation: pulse-sun 3s infinite alternate ease-in-out;
      transform-origin: 340px 55px;
    }

    @keyframes pulse-sun {
      0% { transform: scale(0.96); opacity: 0.92; }
      100% { transform: scale(1.05); opacity: 1; }
    }

    /* Bird appearance */
    .stage-group.active .bird-anim {
      animation: bird-land 0.9s ease-out forwards;
      transform-origin: 275px 85px;
    }

    @keyframes bird-land {
      0% { transform: translate(35px, -35px); opacity: 0; }
      100% { transform: translate(0, 0); opacity: 1; }
    }

    /* Stage Description Label */
    .label-badge {
      position: absolute;
      bottom: 10px;
      left: 50%;
      transform: translateX(-50%);
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(4px);
      padding: 5px 12px;
      border-radius: 20px;
      font-size: 12px;
      font-weight: 700;
      color: #0f172a;
      box-shadow: 0 2px 8px rgba(0,0,0,0.12);
      white-space: nowrap;
      pointer-events: none;
      border: 1px solid rgba(0,0,0,0.08);
      max-width: 92%;
      text-align: center;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    @media (min-width: 400px) {
      .label-badge {
        font-size: 14px;
        padding: 6px 16px;
        bottom: 12px;
      }
    }
  </style>
</head>
<body>

  
  <div class="controls">
    <button class="step-btn active" data-step="0">1. Seed</button>
    <button class="step-btn" data-step="1">2. Movement</button>
    <button class="step-btn" data-step="2">3. Sapling</button>
    <button class="step-btn" data-step="3">4. Oak Tree</button>
    <button class="play-btn" id="playBtn" title="Play/Pause" aria-label="Pause animation">⏸</button>
  </div>

  
  <div class="scene-box">
    <svg class="scene-svg" viewBox="0 0 400 260" preserveAspectRatio="none">
      <defs>
        
        <linearGradient id="skyGrad" x1="0%" y1="0%" x2="0%" y2="100%">
          <stop offset="0%" stop-color="#e0f2fe" />
          <stop offset="100%" stop-color="#f0fdf4" />
        </linearGradient>
        <linearGradient id="soilGrad" x1="0%" y1="0%" x2="0%" y2="100%">
          <stop offset="0%" stop-color="#ecd7b7" />
          <stop offset="100%" stop-color="#d4b584" />
        </linearGradient>
        <radialGradient id="sunGlow" cx="50%" cy="50%" r="50%">
          <stop offset="0%" stop-color="#fef08a" stop-opacity="1" />
          <stop offset="60%" stop-color="#facc15" stop-opacity="0.8" />
          <stop offset="100%" stop-color="#eab308" stop-opacity="0" />
        </radialGradient>
        <linearGradient id="trunkGrad" x1="0%" y1="0%" x2="100%" y2="0%">
          <stop offset="0%" stop-color="#854d0e" />
          <stop offset="100%" stop-color="#a16207" />
        </linearGradient>
        <linearGradient id="leafGrad" x1="0%" y1="0%" x2="0%" y2="100%">
          <stop offset="0%" stop-color="#4ade80" />
          <stop offset="100%" stop-color="#15803d" />
        </linearGradient>
      </defs>

      
      <rect x="0" y="0" width="400" height="170" fill="url(#skyGrad)" />
      <rect x="0" y="170" width="400" height="90" fill="url(#soilGrad)" />

      
      <g class="sun-core">
        <circle cx="340" cy="55" r="32" fill="url(#sunGlow)" />
        <circle cx="340" cy="55" r="18" fill="#facc15" />
        <circle cx="340" cy="55" r="14" fill="#fef08a" />
      </g>

      
      <line x1="0" y1="170" x2="400" y2="170" stroke="#b48c5a" stroke-width="2" stroke-dasharray="4,4" />

      
      <g id="stage-0" class="stage-group active">
        
        <path d="M 200 195 Q 200 215 195 225" stroke="#cbd5e1" stroke-width="3" fill="none" stroke-linecap="round" />
        
        <path d="M 188 185 Q 200 178 212 185" fill="#78350f" />
        
        <ellipse cx="200" cy="192" rx="10" ry="11" fill="#a16207" />
        <ellipse cx="198" cy="190" rx="3" ry="5" fill="#ca8a04" opacity="0.6" />
      </g>

      
      <g id="stage-1" class="stage-group">
        
        <line x1="320" y1="75" x2="250" y2="135" stroke="#facc15" stroke-width="2" stroke-dasharray="4,4" opacity="0.75" />
        <line x1="310" y1="65" x2="235" y2="120" stroke="#facc15" stroke-width="2" stroke-dasharray="4,4" opacity="0.75" />
        
        <path d="M 195 180 Q 185 205 180 225" stroke="#cbd5e1" stroke-width="2.5" fill="none" stroke-linecap="round" />
        <path d="M 200 180 Q 205 210 210 230" stroke="#cbd5e1" stroke-width="2.5" fill="none" stroke-linecap="round" />
        
        <ellipse cx="196" cy="180" rx="6" ry="7" fill="#78350f" />
        
        <path d="M 196 178 C 196 150, 210 135, 245 130" stroke="#22c55e" stroke-width="5" fill="none" stroke-linecap="round" />
        
        <path d="M 245 130 Q 258 122 265 128 Q 256 138 245 130" fill="#16a34a" />
        <path d="M 238 132 Q 248 116 256 120 Q 248 130 238 132" fill="#22c55e" />
        
        <path d="M 196 140 Q 215 135 230 142" fill="none" stroke="#0284c7" stroke-width="2" stroke-dasharray="3,3" />
        <polygon points="232,142 225,138 227,146" fill="#0284c7" />
      </g>

      
      <g id="stage-2" class="stage-group">
        
        <path d="M 200 172 Q 175 200 160 220" stroke="#cbd5e1" stroke-width="3" fill="none" stroke-linecap="round" />
        <path d="M 200 172 Q 225 200 240 220" stroke="#cbd5e1" stroke-width="3" fill="none" stroke-linecap="round" />
        <path d="M 200 172 Q 200 210 200 235" stroke="#cbd5e1" stroke-width="2.5" fill="none" stroke-linecap="round" />
        
        <path d="M 197 172 L 197 95 L 203 95 L 203 172 Z" fill="url(#trunkGrad)" />
        
        <path d="M 198 125 Q 175 115 165 110" stroke="#854d0e" stroke-width="3" fill="none" stroke-linecap="round" />
        <path d="M 202 110 Q 225 100 235 95" stroke="#854d0e" stroke-width="3" fill="none" stroke-linecap="round" />
        
        <circle cx="160" cy="108" r="16" fill="url(#leafGrad)" />
        <circle cx="238" cy="92" r="16" fill="url(#leafGrad)" />
        <circle cx="200" cy="80" r="24" fill="url(#leafGrad)" />
      </g>

      
      <g id="stage-3" class="stage-group">
        
        <path d="M 190 172 Q 150 200 130 225" stroke="#94a3b8" stroke-width="4" fill="none" stroke-linecap="round" />
        <path d="M 210 172 Q 250 200 270 225" stroke="#94a3b8" stroke-width="4" fill="none" stroke-linecap="round" />
        
        <path d="M 180 172 Q 192 110 185 75 L 215 75 Q 208 110 220 172 Z" fill="url(#trunkGrad)" />
        
        <path d="M 188 105 Q 150 95 130 90" stroke="#713f12" stroke-width="7" fill="none" stroke-linecap="round" />
        
        <path d="M 210 100 Q 250 95 285 92" stroke="#713f12" stroke-width="7" fill="none" stroke-linecap="round" />
        
        <ellipse cx="200" cy="65" rx="55" ry="40" fill="#15803d" />
        <ellipse cx="145" cy="75" rx="42" ry="34" fill="#16a34a" />
        <ellipse cx="255" cy="75" rx="42" ry="34" fill="#16a34a" />
        <ellipse cx="200" cy="45" rx="48" ry="32" fill="#22c55e" />
        <ellipse cx="165" cy="55" rx="35" ry="28" fill="#4ade80" opacity="0.8" />
        <ellipse cx="235" cy="55" rx="35" ry="28" fill="#4ade80" opacity="0.8" />
        
        <g class="bird-anim">
          <text x="272" y="90" font-size="20">🐦</text>
        </g>
      </g>
    </svg>

    
    <div class="label-badge" id="stageLabel">Small Seed</div>
  </div>

  <script>
    const labels = [
      "Small Seed",
      "Reaching for Sun (Movement)",
      "Growing Bigger",
      "Fully Grown Tree"
    ];

    const stepButtons = document.querySelectorAll('.step-btn');
    const stageGroups = [
      document.getElementById('stage-0'),
      document.getElementById('stage-1'),
      document.getElementById('stage-2'),
      document.getElementById('stage-3')
    ];
    const stageLabel = document.getElementById('stageLabel');
    const playBtn = document.getElementById('playBtn');

    let currentStep = 0;
    let isPlaying = true;
    let timer = null;

    function showStep(index) {
      currentStep = index;
      
      // Update Buttons
      stepButtons.forEach((btn, i) => {
        btn.classList.toggle('active', i === index);
      });

      // Update SVG Scene layers
      stageGroups.forEach((group, i) => {
        if (group) group.classList.toggle('active', i === index);
      });

      // Update Label
      stageLabel.textContent = labels[index];
    }

    function nextStep() {
      const next = (currentStep + 1) % 4;
      showStep(next);
    }

    function startTimer() {
      stopTimer();
      timer = setInterval(nextStep, 2500);
      isPlaying = true;
      playBtn.textContent = '⏸';
      playBtn.setAttribute('aria-label', 'Pause animation');
    }

    function stopTimer() {
      if (timer) {
        clearInterval(timer);
        timer = null;
      }
      isPlaying = false;
      playBtn.textContent = '▶';
      playBtn.setAttribute('aria-label', 'Play animation');
    }

    function togglePlay() {
      if (isPlaying) {
        stopTimer();
      } else {
        nextStep();
        startTimer();
      }
    }

    // Step button click handlers
    stepButtons.forEach((btn) => {
      btn.addEventListener('click', () => {
        const step = parseInt(btn.dataset.step, 10);
        showStep(step);
        if (isPlaying) {
          startTimer();
        }
      });
    });

    playBtn.addEventListener('click', togglePlay);

    // Initialize Auto-looping
    showStep(0);
    startTimer();
  </script>
</body>
</html>

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta name="aspect-ratio" content="1:1">
  <style>
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-tap-highlight-color: transparent;
    }
    body {
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      background: #ffffff;
      color: #1e2945;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      min-height: 100%;
      padding: 12px;
    }
    .table-box {
      width: 100%;
      max-width: 440px;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .header-row {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr;
      align-items: center;
      text-align: center;
      padding: 8px 10px;
      font-size: 15px;
      font-weight: 700;
      color: #475569;
    }
    .header-col {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 4px;
    }
    .header-col:first-child {
      justify-content: flex-start;
      font-size: 13px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      color: #64748b;
    }
    .row-card {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr;
      align-items: center;
      background: #f8fafc;
      border: 1px solid #e2e8f0;
      border-radius: 12px;
      padding: 10px;
      cursor: pointer;
      user-select: none;
      transition: background 0.2s, box-shadow 0.2s;
    }
    .row-card:active {
      background: #f1f5f9;
    }
    .row-card.highlight {
      box-shadow: 0 0 0 2px #22b7ff;
      background: #ffffff;
    }
    .trait-label {
      font-size: 14px;
      font-weight: 600;
      color: #1e2945;
      line-height: 1.2;
    }
    .cell {
      display: flex;
      justify-content: center;
      align-items: center;
    }
    .mark {
      width: 32px;
      height: 32px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      font-weight: 800;
      transition: transform 0.2s ease, opacity 0.2s ease;
    }
    .mark.check {
      background: #dcfce7;
      color: #16a34a;
    }
    .mark.cross {
      background: #fee2e2;
      color: #dc2626;
    }
    .mark.hidden {
      opacity: 0.2;
      transform: scale(0.85);
      background: #e2e8f0;
      color: transparent;
    }
    .summary-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr;
      gap: 6px;
      margin-top: 4px;
      padding-top: 6px;
      border-top: 2px dashed #e2e8f0;
      align-items: center;
    }
    .summary-title {
      font-size: 13px;
      font-weight: 700;
      color: #64748b;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    .badge {
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      padding: 6px 4px;
      border-radius: 10px;
      text-align: center;
      font-weight: 700;
      font-size: 12px;
      line-height: 1.2;
    }
    .badge-score {
      font-size: 15px;
      font-weight: 800;
    }
    .badge-living {
      background: #dcfce7;
      color: #15803d;
      border: 1px solid #bbf7d0;
    }
    .badge-nonliving {
      background: #fee2e2;
      color: #b91c1c;
      border: 1px solid #fecaca;
    }
    .controls {
      display: flex;
      justify-content: center;
      gap: 8px;
      margin-top: 8px;
    }
    .btn {
      background: #f1f5f9;
      border: 1px solid #cbd5e1;
      color: #334155;
      padding: 6px 14px;
      border-radius: 8px;
      font-size: 13px;
      font-weight: 600;
      cursor: pointer;
    }
    .btn:active {
      background: #e2e8f0;
    }
  </style>
</head>
<body>

  <div class="table-box">
    
    <div class="header-row">
      <div class="header-col">Sign of Life</div>
      <div class="header-col">🐰 Bunny</div>
      <div class="header-col">🔥 Fire</div>
    </div>

    
    <div class="row-card" data-step="0">
      <div class="trait-label">Needs Energy</div>
      <div class="cell"><div class="mark check">✓</div></div>
      <div class="cell"><div class="mark check">✓</div></div>
    </div>

    <div class="row-card" data-step="1">
      <div class="trait-label">Grows</div>
      <div class="cell"><div class="mark check">✓</div></div>
      <div class="cell"><div class="mark check">✓</div></div>
    </div>

    <div class="row-card" data-step="2">
      <div class="trait-label">Moves Alone</div>
      <div class="cell"><div class="mark check">✓</div></div>
      <div class="cell"><div class="mark cross">✕</div></div>
    </div>

    <div class="row-card" data-step="3">
      <div class="trait-label">Reproduces</div>
      <div class="cell"><div class="mark check">✓</div></div>
      <div class="cell"><div class="mark cross">✕</div></div>
    </div>

    
    <div class="summary-grid">
      <div class="summary-title">Status</div>
      <div class="badge badge-living">
        <span class="badge-score" id="bunnyScore">4/4</span>
        <span>LIVING</span>
      </div>
      <div class="badge badge-nonliving">
        <span class="badge-score" id="fireScore">2/4</span>
        <span>NOT ALIVE</span>
      </div>
    </div>

    <div class="controls">
      <button class="btn" id="toggleBtn">Step Through ▶</button>
    </div>
  </div>

  <script>
    const rows = document.querySelectorAll('.row-card');
    const toggleBtn = document.getElementById('toggleBtn');
    const bunnyScoreEl = document.getElementById('bunnyScore');
    const fireScoreEl = document.getElementById('fireScore');

    let currentStep = -1; // -1 = show all
    let timer = null;

    function updateView() {
      if (currentStep === -1) {
        rows.forEach(r => {
          r.classList.remove('highlight');
          r.querySelectorAll('.mark').forEach(m => m.classList.remove('hidden'));
        });
        bunnyScoreEl.textContent = '4/4';
        fireScoreEl.textContent = '2/4';
        toggleBtn.textContent = 'Step Through ▶';
      } else {
        let bCount = 0;
        let fCount = 0;
        rows.forEach((r, idx) => {
          const marks = r.querySelectorAll('.mark');
          if (idx <= currentStep) {
            marks.forEach(m => m.classList.remove('hidden'));
            bCount += 1;
            if (idx === 0 || idx === 1) fCount += 1;
          } else {
            marks.forEach(m => m.classList.add('hidden'));
          }

          if (idx === currentStep) {
            r.classList.add('highlight');
          } else {
            r.classList.remove('highlight');
          }
        });
        bunnyScoreEl.textContent = `${bCount}/4`;
        fireScoreEl.textContent = `${fCount}/4`;
        toggleBtn.textContent = currentStep === 3 ? 'Show All ↺' : 'Next Step →';
      }
    }

    function stepNext() {
      if (currentStep === -1) {
        currentStep = 0;
      } else if (currentStep < 3) {
        currentStep++;
      } else {
        currentStep = -1;
      }
      updateView();
    }

    toggleBtn.addEventListener('click', stepNext);

    rows.forEach((row, idx) => {
      row.addEventListener('click', () => {
        currentStep = idx;
        updateView();
      });
    });

    updateView();
  </script>
</body>
</html>

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta name="aspect-ratio" content="4:3">
  <style>
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
      background: transparent;
      color: #1e2945;
      padding: 10px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      min-height: 100%;
    }

    .main-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 10px;
      width: 100%;
      max-width: 580px;
    }

    .col-card {
      background: #ffffff;
      border-radius: 14px;
      padding: 12px 8px;
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      transition: box-shadow 0.25s ease, transform 0.25s ease;
      cursor: pointer;
      user-select: none;
      position: relative;
    }

    /* Living Column */
    .col-living {
      border: 2px solid #86efac;
      background: #f0fdf4;
    }
    .col-living.active {
      box-shadow: 0 0 0 3px #22c55e, 0 6px 16px rgba(34, 197, 94, 0.18);
    }
    .badge-living {
      background: #22c55e;
      color: #ffffff;
    }
    .tag-living {
      background: #dcfce7;
      color: #15803d;
      border: 1px solid #bbf7d0;
    }

    /* Dead Column */
    .col-dead {
      border: 2px solid #fde68a;
      background: #fffbeb;
    }
    .col-dead.active {
      box-shadow: 0 0 0 3px #d97706, 0 6px 16px rgba(217, 119, 6, 0.18);
    }
    .badge-dead {
      background: #d97706;
      color: #ffffff;
    }
    .tag-dead {
      background: #fef3c7;
      color: #b45309;
      border: 1px solid #fde68a;
    }

    /* Never Alive Column */
    .col-never {
      border: 2px solid #cbd5e1;
      background: #f8fafc;
    }
    .col-never.active {
      box-shadow: 0 0 0 3px #64748b, 0 6px 16px rgba(100, 116, 139, 0.18);
    }
    .badge-never {
      background: #64748b;
      color: #ffffff;
    }
    .tag-never {
      background: #f1f5f9;
      color: #475569;
      border: 1px solid #e2e8f0;
    }

    .badge-header {
      font-size: 14px;
      font-weight: 700;
      padding: 4px 10px;
      border-radius: 20px;
      margin-bottom: 8px;
      letter-spacing: 0.2px;
    }

    .items-container {
      display: flex;
      flex-direction: column;
      gap: 6px;
      width: 100%;
      margin: 4px 0 10px 0;
    }

    .item-pill {
      background: #ffffff;
      border-radius: 10px;
      padding: 6px 4px;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
      box-shadow: 0 1px 3px rgba(0,0,0,0.06);
    }

    .item-emoji {
      font-size: 26px;
      line-height: 1;
    }

    .item-name {
      font-size: 13px;
      font-weight: 600;
      color: #334155;
    }

    .status-tag {
      font-size: 11px;
      font-weight: 700;
      padding: 5px 6px;
      border-radius: 8px;
      width: 100%;
      line-height: 1.25;
    }

    .hint-bar {
      margin-top: 10px;
      font-size: 12px;
      color: #64748b;
      font-weight: 500;
      display: flex;
      align-items: center;
      gap: 4px;
    }

    @media (max-width: 440px) {
      .main-grid {
        gap: 6px;
      }
      .col-card {
        padding: 8px 4px;
      }
      .badge-header {
        font-size: 12px;
        padding: 3px 6px;
      }
      .item-emoji {
        font-size: 20px;
      }
      .item-name {
        font-size: 11px;
      }
      .status-tag {
        font-size: 10px;
        padding: 4px 2px;
      }
    }
  </style>
</head>
<body>

  <div class="main-grid">
    
    <div class="col-card col-living active" onclick="selectCard(this, 523.25)">
      <div class="badge-header badge-living">Living</div>
      <div class="items-container">
        <div class="item-pill">
          <span class="item-emoji">🐶</span>
          <span class="item-name">Puppy</span>
        </div>
        <div class="item-pill">
          <span class="item-emoji">🪴</span>
          <span class="item-name">Plant</span>
        </div>
      </div>
      <div class="status-tag tag-living">Alive now</div>
    </div>

    
    <div class="col-card col-dead" onclick="selectCard(this, 392.00)">
      <div class="badge-header badge-dead">Dead</div>
      <div class="items-container">
        <div class="item-pill">
          <span class="item-emoji">🍂</span>
          <span class="item-name">Leaf</span>
        </div>
        <div class="item-pill">
          <span class="item-emoji">🪵</span>
          <span class="item-name">Log</span>
        </div>
      </div>
      <div class="status-tag tag-dead">Was once alive</div>
    </div>

    
    <div class="col-card col-never" onclick="selectCard(this, 329.63)">
      <div class="badge-header badge-never">Never Alive</div>
      <div class="items-container">
        <div class="item-pill">
          <span class="item-emoji">🪨</span>
          <span class="item-name">Rock</span>
        </div>
        <div class="item-pill">
          <span class="item-emoji">🤖</span>
          <span class="item-name">Robot</span>
        </div>
      </div>
      <div class="status-tag tag-never">Never had life</div>
    </div>
  </div>

  <div class="hint-bar">
    <span>Tap a category to compare</span>
  </div>

  <script>
    function playTone(freq) {
      try {
        const ctx = new (window.AudioContext || window.webkitAudioContext)();
        const osc = ctx.createOscillator();
        const gain = ctx.createGain();
        osc.frequency.value = freq;
        osc.connect(gain);
        gain.connect(ctx.destination);
        gain.gain.setValueAtTime(0.12, ctx.currentTime);
        gain.gain.exponentialRampToValueAtTime(0.001, ctx.currentTime + 0.25);
        osc.start();
        osc.stop(ctx.currentTime + 0.25);
      } catch (e) {}
    }

    function selectCard(card, freq) {
      document.querySelectorAll('.col-card').forEach(c => c.classList.remove('active'));
      card.classList.add('active');
      playTone(freq);
    }
  </script>
</body>
</html>

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>4 Signs of Living Things</title>
  <style>
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
      background: transparent;
      color: #1e2945;
      padding: 10px 8px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: flex-start;
      margin: 0 auto;
      max-width: 480px;
    }

    .header {
      text-align: center;
      margin-bottom: 8px;
      width: 100%;
    }
    .header h1 {
      font-size: 17px;
      font-weight: 800;
      color: #1e2945;
      letter-spacing: -0.3px;
    }
    .header p {
      font-size: 11.5px;
      color: #596780;
      margin-top: 2px;
    }

    .grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 10px;
      width: 100%;
    }

    .quadrant {
      background: #ffffff;
      border-radius: 12px;
      padding: 8px 6px 10px;
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      cursor: pointer;
      user-select: none;
      box-shadow: 0 2px 6px rgba(30, 41, 69, 0.08);
      transition: box-shadow 0.25s ease, background-color 0.25s ease, border-color 0.25s ease;
      position: relative;
    }

    .quadrant:hover {
      box-shadow: 0 4px 14px rgba(34, 183, 255, 0.3);
      background-color: #fafcfe;
    }

    .quadrant.active {
      box-shadow: 0 0 0 2.5px #22b7ff, 0 4px 12px rgba(34, 183, 255, 0.25);
    }

    /* Quadrant Border Accents */
    .q-food  { border: 2px solid #ff9f1c; }
    .q-grow  { border: 2px solid #2ec4b6; }
    .q-move  { border: 2px solid #22b7ff; }
    .q-repro { border: 2px solid #e71d36; }

    /* Label Badges */
    .label-badge {
      font-size: 11.5px;
      font-weight: 700;
      padding: 4px 8px;
      border-radius: 20px;
      width: 96%;
      letter-spacing: -0.2px;
      margin-bottom: 6px;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 4px;
    }
    .q-food .label-badge  { background: #fff3e0; color: #b45309; }
    .q-grow .label-badge  { background: #e6fffa; color: #0d9488; }
    .q-move .label-badge  { background: #e0f2fe; color: #0284c7; }
    .q-repro .label-badge { background: #ffe4e6; color: #e11d48; }

    .stage {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: center;
      min-height: 56px;
      margin: 4px 0 6px;
    }

    .sub-caption {
      font-size: 10.5px;
      font-weight: 600;
      color: #475569;
      line-height: 1.25;
      padding: 0 4px;
    }

    /* Q1: Food & Energy */
    .food-scene {
      display: flex;
      align-items: flex-end;
      justify-content: space-around;
      width: 100%;
      padding: 0 4px;
    }
    .scene-item {
      display: flex;
      flex-direction: column;
      align-items: center;
    }
    .puppy {
      font-size: 28px;
      animation: eatBob 2.2s infinite ease-in-out;
      transform-origin: bottom center;
      line-height: 1;
    }
    .bowl {
      font-size: 16px;
      margin-top: -3px;
      line-height: 1;
    }
    .sun {
      font-size: 22px;
      animation: sunGlow 2.5s infinite ease-in-out;
      line-height: 1;
    }
    .ray {
      font-size: 9px;
      color: #ff9f1c;
      font-weight: 900;
      line-height: 1;
      margin: 1px 0;
      animation: rayPulse 2.5s infinite ease-in-out;
    }
    .leaf {
      font-size: 22px;
      line-height: 1;
    }

    /* Q2: Grow & Change */
    .grow-stages {
      display: flex;
      align-items: flex-end;
      justify-content: center;
      gap: 3px;
      height: 48px;
    }
    .g-item {
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: flex-end;
    }
    .g-seed {
      font-size: 17px;
      line-height: 1;
    }
    .g-sprout {
      font-size: 24px;
      line-height: 1;
    }
    .g-flower {
      font-size: 34px;
      line-height: 1;
      animation: bloom 3s infinite ease-in-out;
      transform-origin: bottom center;
    }
    .arrow-mini {
      font-size: 10px;
      color: #2ec4b6;
      font-weight: 900;
      margin-bottom: 6px;
    }

    /* Q3: Move on Their Own */
    .move-scene {
      display: flex;
      align-items: flex-end;
      justify-content: space-around;
      width: 100%;
      padding: 0 4px;
    }
    .frog-box {
      width: 48px;
      height: 46px;
      position: relative;
    }
    .frog {
      font-size: 28px;
      position: absolute;
      line-height: 1;
      animation: frogHop 2.8s infinite ease-in-out;
    }
    .sun-tilt-box {
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: flex-end;
      height: 46px;
    }
    .mini-sun {
      font-size: 14px;
      line-height: 1;
    }
    .tilting-flower {
      font-size: 26px;
      line-height: 1;
      animation: plantFollow 3s infinite ease-in-out;
      transform-origin: bottom center;
    }

    /* Q4: Reproduce */
    .repro-scene {
      display: flex;
      align-items: flex-end;
      justify-content: center;
      gap: 6px;
      width: 100%;
    }
    .bird-mom {
      font-size: 29px;
      line-height: 1;
      animation: momFeed 2.5s infinite ease-in-out;
      transform-origin: bottom right;
    }
    .nest-box {
      display: flex;
      flex-direction: column;
      align-items: center;
    }
    .chicks {
      display: flex;
      gap: 1px;
    }
    .chick {
      font-size: 17px;
      line-height: 1;
      animation: chickPeep 2.5s infinite ease-in-out;
    }
    .chick:nth-child(2) {
      animation-delay: 0.4s;
    }
    .nest {
      font-size: 20px;
      line-height: 1;
      margin-top: -4px;
    }

    /* Info Bar at Bottom */
    .info-bar {
      margin-top: 8px;
      width: 100%;
      background: #ffffff;
      border: 1.5px solid #22b7ff;
      border-radius: 10px;
      padding: 6px 10px;
      text-align: center;
      font-size: 11px;
      color: #1e2945;
      box-shadow: 0 2px 5px rgba(34, 183, 255, 0.15);
      min-height: 32px;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
    }
    .info-bar strong {
      color: #0284c7;
    }

    /* Calm & Smooth Educational Keyframes (Duration >= 2s) */
    @keyframes eatBob {
      0%, 100% { transform: translateY(0) rotate(0deg); }
      40% { transform: translateY(3px) rotate(4deg); }
      70% { transform: translateY(1px) rotate(0deg); }
    }
    @keyframes sunGlow {
      0%, 100% { filter: drop-shadow(0 0 1px #ffb703); }
      50% { filter: drop-shadow(0 0 4px #fb8500); }
    }
    @keyframes rayPulse {
      0%, 100% { opacity: 0.3; transform: translateY(-1px); }
      50% { opacity: 1; transform: translateY(2px); }
    }
    @keyframes bloom {
      0%, 100% { transform: scale(0.95); }
      50% { transform: scale(1.08); }
    }
    @keyframes frogHop {
      0%, 100% { left: 0px; top: 12px; }
      25% { left: 10px; top: 0px; }
      50% { left: 20px; top: 12px; }
      75% { left: 10px; top: 0px; }
    }
    @keyframes plantFollow {
      0%, 100% { transform: rotate(-7deg); }
      50% { transform: rotate(8deg); }
    }
    @keyframes momFeed {
      0%, 100% { transform: translateY(0) rotate(0deg); }
      45% { transform: translateY(2px) rotate(-8deg); }
    }
    @keyframes chickPeep {
      0%, 100% { transform: translateY(0); }
      45% { transform: translateY(-3px); }
    }

    /* Narrow mobile adjustments */
    @media (max-width: 330px) {
      .grid {
        grid-template-columns: 1fr;
      }
      .label-badge {
        font-size: 12px;
      }
    }
  </style>
</head>
<body>

  <div class="header">
    <h1>🌟 4 Signs of Living Things</h1>
    <p>Tap each card to learn how living things survive & grow!</p>
  </div>

  <div class="grid">
    
    <div class="quadrant q-food active" id="card-food" onclick="selectSign('food')">
      <div class="label-badge">🥣 1. Food & Energy</div>
      <div class="stage">
        <div class="food-scene">
          <div class="scene-item">
            <div class="puppy">🐶</div>
            <div class="bowl">🥣</div>
          </div>
          <div class="scene-item">
            <div class="sun">☀️</div>
            <div class="ray">▼</div>
            <div class="leaf">🍃</div>
          </div>
        </div>
      </div>
      <div class="sub-caption">Animals eat food &bull; Plants use sunlight</div>
    </div>

    
    <div class="quadrant q-grow" id="card-grow" onclick="selectSign('grow')">
      <div class="label-badge">🌱 2. Grow & Change</div>
      <div class="stage">
        <div class="grow-stages">
          <div class="g-item"><div class="g-seed">🌱</div></div>
          <div class="arrow-mini">➔</div>
          <div class="g-item"><div class="g-sprout">🌿</div></div>
          <div class="arrow-mini">➔</div>
          <div class="g-item"><div class="g-flower">🌻</div></div>
        </div>
      </div>
      <div class="sub-caption">Seed sprout &bull; Grows into a flower</div>
    </div>

    
    <div class="quadrant q-move" id="card-move" onclick="selectSign('move')">
      <div class="label-badge">🐸 3. Move on Own</div>
      <div class="stage">
        <div class="move-scene">
          <div class="frog-box">
            <div class="frog">🐸</div>
          </div>
          <div class="sun-tilt-box">
            <div class="mini-sun">☀️</div>
            <div class="tilting-flower">🌻</div>
          </div>
        </div>
      </div>
      <div class="sub-caption">Animals hop &bull; Plants turn to light</div>
    </div>

    
    <div class="quadrant q-repro" id="card-repro" onclick="selectSign('repro')">
      <div class="label-badge">🐣 4. Reproduce</div>
      <div class="stage">
        <div class="repro-scene">
          <div class="bird-mom">🐦</div>
          <div class="nest-box">
            <div class="chicks">
              <div class="chick">🐣</div>
              <div class="chick">🐣</div>
            </div>
            <div class="nest">🪺</div>
          </div>
        </div>
      </div>
      <div class="sub-caption">Parents make babies &bull; Life continues</div>
    </div>
  </div>

  <div class="info-bar" id="info-text">
    💡 <span><strong>Need Food & Energy:</strong> Living things need nutrition to live and be active!</span>
  </div>

  <script>
    const explanations = {
      food: "<strong>Need Food & Energy:</strong> Animals eat meals and plants absorb sunlight to stay alive!",
      grow: "<strong>Grow & Change:</strong> All living things start small, grow bigger, and change over time!",
      move: "<strong>Move on Their Own:</strong> Animals walk or swim, and plants bend toward the warm sun!",
      repro: "<strong>Reproduce (Make Babies):</strong> Living things create new young ones of their own kind!"
    };

    function selectSign(key) {
      document.querySelectorAll('.quadrant').forEach(q => q.classList.remove('active'));
      const activeCard = document.getElementById('card-' + key);
      if (activeCard) {
        activeCard.classList.add('active');
      }
      const infoBox = document.getElementById('info-text');
      if (infoBox && explanations[key]) {
        infoBox.innerHTML = '💡 <span>' + explanations[key] + '</span>';
      }
    }
  </script>
</body>
</html>

science.ks1.y2.t1.s1

Aligned learning resources

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