<!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>Bendy vs Rigid Materials</title>
  <style>
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
      color: #1e293b;
      background: transparent;
      padding: 12px;
      user-select: none;
      -webkit-user-select: none;
    }
    .top-bar {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 8px;
      margin-bottom: 12px;
    }
    .test-pill {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: #f1f5f9;
      color: #334155;
      font-size: 13px;
      font-weight: 600;
      padding: 6px 12px;
      border-radius: 999px;
      border: 1px solid #cbd5e1;
    }
    .btn-toggle {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: #0284c7;
      color: #ffffff;
      font-size: 13px;
      font-weight: 600;
      padding: 6px 14px;
      border-radius: 999px;
      border: none;
      cursor: pointer;
      box-shadow: 0 1px 2px rgba(0,0,0,0.08);
      transition: background 0.2s ease, transform 0.1s ease;
    }
    .btn-toggle:active {
      transform: scale(0.98);
    }
    .btn-toggle.tested {
      background: #0f766e;
    }

    .columns-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
    }
    @media (max-width: 480px) {
      .columns-grid {
        grid-template-columns: 1fr;
        gap: 16px;
      }
    }

    .column {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .col-header {
      border-radius: 10px;
      padding: 8px 10px;
      text-align: center;
    }
    .col-header.bendy {
      background: #e0f2fe;
      border: 1px solid #bae6fd;
    }
    .col-header.rigid {
      background: #f1f5f9;
      border: 1px solid #e2e8f0;
    }
    .col-title {
      font-size: 14px;
      font-weight: 700;
      margin-bottom: 2px;
    }
    .col-title.bendy { color: #0369a1; }
    .col-title.rigid { color: #334155; }
    .col-sub {
      font-size: 11px;
      color: #64748b;
      font-weight: 500;
    }

    .item-card {
      background: #f8fafc;
      border: 1px solid #e2e8f0;
      border-radius: 10px;
      padding: 8px 10px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
      position: relative;
      overflow: hidden;
    }
    .item-info {
      display: flex;
      flex-direction: column;
      gap: 2px;
      z-index: 2;
    }
    .item-name {
      font-size: 13px;
      font-weight: 600;
      color: #1e293b;
    }
    .status-badge {
      font-size: 10px;
      font-weight: 600;
      padding: 2px 6px;
      border-radius: 4px;
      width: fit-content;
      transition: all 0.3s ease;
    }
    .status-neutral {
      background: #e2e8f0;
      color: #64748b;
    }
    .status-flex {
      background: #dbeafe;
      color: #1d4ed8;
    }
    .status-stiff {
      background: #dcfce7;
      color: #15803d;
    }

    .stage {
      width: 100px;
      height: 60px;
      display: flex;
      align-items: center;
      justify-content: center;
      position: relative;
    }

    /* Bendy Objects & Deformation */
    .rubber-band {
      width: 44px;
      height: 28px;
      border: 4px solid #f59e0b;
      border-radius: 50%;
      transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1), border-radius 0.4s ease;
    }
    .tested .rubber-band {
      transform: scaleX(1.7) scaleY(0.45) rotate(-8deg);
      border-radius: 40% 60% 40% 60% / 60% 40% 60% 40%;
    }

    .scarf-svg, .pipe-svg, .rigid-svg {
      width: 100%;
      height: 100%;
    }
    .scarf-path {
      transition: d 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    }
    .pipe-path {
      transition: d 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    }

    /* Force Arrows for Rigid items */
    .force-arrow {
      position: absolute;
      opacity: 0;
      transform: scale(0.6);
      transition: opacity 0.3s ease, transform 0.3s ease;
      color: #ef4444;
      font-size: 13px;
      font-weight: 900;
      pointer-events: none;
    }
    .force-left { left: 8px; }
    .force-right { right: 8px; }
    .tested .force-left {
      opacity: 1;
      transform: translateX(4px) scale(1);
    }
    .tested .force-right {
      opacity: 1;
      transform: translateX(-4px) scale(1);
    }

    .force-indicator {
      font-size: 11px;
      color: #dc2626;
      opacity: 0;
      transition: opacity 0.3s ease;
      font-weight: 700;
    }
    .tested .force-indicator {
      opacity: 1;
    }
  </style>
</head>
<body>

  <div class="top-bar">
    <div class="test-pill">
      <span>✋</span>
      <span>Test: Apply Gentle Force</span>
    </div>
    <button id="toggleBtn" class="btn-toggle" onclick="toggleTest()">
      <span id="btnIcon">▶</span>
      <span id="btnLabel">Apply Force</span>
    </button>
  </div>

  <div id="diagramContainer" class="columns-grid">
    
    <div class="column">
      <div class="col-header bendy">
        <div class="col-title bendy">Bendy (Flexible)</div>
        <div class="col-sub">Changes shape easily</div>
      </div>

      
      <div class="item-card">
        <div class="item-info">
          <span class="item-name">Rubber Band</span>
          <span id="badge-rb" class="status-badge status-neutral">At Rest</span>
        </div>
        <div class="stage">
          <div class="rubber-band"></div>
        </div>
      </div>

      
      <div class="item-card">
        <div class="item-info">
          <span class="item-name">Wool Scarf</span>
          <span id="badge-sc" class="status-badge status-neutral">At Rest</span>
        </div>
        <div class="stage">
          <svg class="scarf-svg" viewBox="0 0 100 60">
            <path id="scarfPath" class="scarf-path" d="M 15 30 Q 50 30 85 30" fill="none" stroke="#ec4899" stroke-width="9" stroke-linecap="round"/>
            <path id="scarfFringeL" d="M 12 26 L 6 24 M 12 30 L 5 30 M 12 34 L 6 36" stroke="#db2777" stroke-width="2" stroke-linecap="round"/>
            <path id="scarfFringeR" d="M 88 26 L 94 24 M 88 30 L 95 30 M 88 34 L 94 36" stroke="#db2777" stroke-width="2" stroke-linecap="round"/>
          </svg>
        </div>
      </div>

      
      <div class="item-card">
        <div class="item-info">
          <span class="item-name">Pipe Cleaner</span>
          <span id="badge-pc" class="status-badge status-neutral">At Rest</span>
        </div>
        <div class="stage">
          <svg class="pipe-svg" viewBox="0 0 100 60">
            <path id="pipePath" class="pipe-path" d="M 15 30 L 85 30" fill="none" stroke="#8b5cf6" stroke-width="6" stroke-linecap="round" stroke-dasharray="2 3"/>
          </svg>
        </div>
      </div>
    </div>

    
    <div class="column">
      <div class="col-header rigid">
        <div class="col-title rigid">Rigid (Stiff)</div>
        <div class="col-sub">Holds shape &amp; resists</div>
      </div>

      
      <div class="item-card">
        <div class="item-info">
          <span class="item-name">Glass Jar</span>
          <span id="badge-gj" class="status-badge status-neutral">At Rest</span>
        </div>
        <div class="stage">
          <span class="force-arrow force-left">→</span>
          <svg class="rigid-svg" viewBox="0 0 100 60">
            
            <rect x="36" y="10" width="28" height="5" rx="2" fill="#94a3b8" />
            
            <rect x="32" y="15" width="36" height="36" rx="4" fill="#e2e8f0" stroke="#64748b" stroke-width="2.5" fill-opacity="0.5"/>
            
            <line x1="37" y1="20" x2="37" y2="44" stroke="#ffffff" stroke-width="2.5" stroke-linecap="round"/>
          </svg>
          <span class="force-arrow force-right">←</span>
        </div>
      </div>

      
      <div class="item-card">
        <div class="item-info">
          <span class="item-name">Wooden Ruler</span>
          <span id="badge-wr" class="status-badge status-neutral">At Rest</span>
        </div>
        <div class="stage">
          <span class="force-arrow force-left">→</span>
          <svg class="rigid-svg" viewBox="0 0 100 60">
            
            <rect x="15" y="22" width="70" height="16" rx="2" fill="#fbbf24" stroke="#d97706" stroke-width="2"/>
            
            <line x1="25" y1="22" x2="25" y2="28" stroke="#92400e" stroke-width="1.5"/>
            <line x1="35" y1="22" x2="35" y2="31" stroke="#92400e" stroke-width="1.5"/>
            <line x1="45" y1="22" x2="45" y2="28" stroke="#92400e" stroke-width="1.5"/>
            <line x1="55" y1="22" x2="55" y2="31" stroke="#92400e" stroke-width="1.5"/>
            <line x1="65" y1="22" x2="65" y2="28" stroke="#92400e" stroke-width="1.5"/>
            <line x1="75" y1="22" x2="75" y2="31" stroke="#92400e" stroke-width="1.5"/>
          </svg>
          <span class="force-arrow force-right">←</span>
        </div>
      </div>

      
      <div class="item-card">
        <div class="item-info">
          <span class="item-name">Ceramic Mug</span>
          <span id="badge-cm" class="status-badge status-neutral">At Rest</span>
        </div>
        <div class="stage">
          <span class="force-arrow force-left">→</span>
          <svg class="rigid-svg" viewBox="0 0 100 60">
            
            <path d="M 60 22 C 75 22 75 42 60 42" fill="none" stroke="#475569" stroke-width="3.5" stroke-linecap="round"/>
            
            <rect x="30" y="17" width="32" height="30" rx="3" fill="#cbd5e1" stroke="#475569" stroke-width="2.5"/>
          </svg>
          <span class="force-arrow force-right">←</span>
        </div>
      </div>
    </div>
  </div>

  <script>
    let isTesting = false;

    function toggleTest() {
      isTesting = !isTesting;
      const container = document.getElementById('diagramContainer');
      const btn = document.getElementById('toggleBtn');
      const btnLabel = document.getElementById('btnLabel');
      const btnIcon = document.getElementById('btnIcon');

      const scarfPath = document.getElementById('scarfPath');
      const pipePath = document.getElementById('pipePath');

      const bendyBadges = ['badge-rb', 'badge-sc', 'badge-pc'];
      const rigidBadges = ['badge-gj', 'badge-wr', 'badge-cm'];

      if (isTesting) {
        container.classList.add('tested');
        btn.classList.add('tested');
        btnLabel.textContent = 'Reset (Rest)';
        btnIcon.textContent = '↺';

        // Animate SVG paths to deformed shapes
        scarfPath.setAttribute('d', 'M 15 18 Q 50 56 85 18');
        pipePath.setAttribute('d', 'M 15 30 Q 32 10 50 30 T 85 30');

        // Update badges
        bendyBadges.forEach(id => {
          const el = document.getElementById(id);
          el.textContent = 'Bent / Stretched';
          el.className = 'status-badge status-flex';
        });
        rigidBadges.forEach(id => {
          const el = document.getElementById(id);
          el.textContent = '✓ Resists (Stiff)';
          el.className = 'status-badge status-stiff';
        });
      } else {
        container.classList.remove('tested');
        btn.classList.remove('tested');
        btnLabel.textContent = 'Apply Force';
        btnIcon.textContent = '▶';

        // Animate SVG paths back to rest
        scarfPath.setAttribute('d', 'M 15 30 Q 50 30 85 30');
        pipePath.setAttribute('d', 'M 15 30 L 85 30');

        // Reset badges
        bendyBadges.forEach(id => {
          const el = document.getElementById(id);
          el.textContent = 'At Rest';
          el.className = 'status-badge status-neutral';
        });
        rigidBadges.forEach(id => {
          const el = document.getElementById(id);
          el.textContent = 'At Rest';
          el.className = 'status-badge status-neutral';
        });
      }
    }
  </script>
</body>
</html>

Grouping Materials by Their Properties

<!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">
  <title>Material Properties Comparison</title>
  <style>
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    body {
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      color: #0f172a;
      background: transparent;
      padding: 8px;
      user-select: none;
      -webkit-user-select: none;
    }

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

    .tile {
      background: #f8fafc;
      border: 1px solid #e2e8f0;
      border-radius: 14px;
      padding: 12px 10px;
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      cursor: pointer;
      transition: background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
      position: relative;
    }

    .tile:hover {
      background: #ffffff;
      border-color: #cbd5e1;
      box-shadow: 0 4px 12px rgba(15, 23, 42, 0.05);
    }

    .tile.active {
      background: #ffffff;
      border-color: #94a3b8;
      box-shadow: 0 4px 14px rgba(15, 23, 42, 0.08);
    }

    .badge {
      display: inline-block;
      font-size: 13px;
      font-weight: 700;
      padding: 4px 10px;
      border-radius: 20px;
      margin-bottom: 6px;
      letter-spacing: 0.2px;
    }

    .badge-waterproof {
      background: #e0f2fe;
      color: #0369a1;
    }

    .badge-absorbent {
      background: #e0e7ff;
      color: #4338ca;
    }

    .badge-flexible {
      background: #fef3c7;
      color: #b45309;
    }

    .badge-rigid {
      background: #f1f5f9;
      color: #475569;
    }

    .object-name {
      font-size: 12px;
      font-weight: 600;
      color: #64748b;
      margin-bottom: 8px;
    }

    .svg-stage {
      width: 100%;
      height: 95px;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    svg {
      width: 100%;
      height: 100%;
      overflow: visible;
    }

    .action-hint {
      font-size: 11px;
      font-weight: 600;
      color: #94a3b8;
      margin-top: 6px;
    }

    /* Animation effects */
    .drop-waterproof {
      transition: transform 0.6s cubic-bezier(0.25, 1, 0.5, 1), opacity 0.6s ease;
    }
    .tile.active .drop-waterproof-1 {
      transform: translate(24px, 32px);
      opacity: 0.9;
    }
    .tile.active .drop-waterproof-2 {
      transform: translate(32px, 38px);
      opacity: 0.9;
    }

    .drop-absorbent {
      transition: transform 0.5s ease-in, opacity 0.5s ease-out;
    }
    .sponge-wetness {
      transition: opacity 0.5s ease;
      opacity: 0;
    }
    .tile.active .drop-absorbent {
      transform: translateY(22px) scale(0.4);
      opacity: 0;
    }
    .tile.active .sponge-wetness {
      opacity: 0.85;
    }

    .flex-band {
      transition: d 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    }
    .force-arrow-flex {
      transition: transform 0.4s ease;
    }
    .tile.active .force-arrow-flex {
      transform: translateY(14px);
    }

    .force-arrow-rigid {
      transition: transform 0.2s ease;
    }
    .tile.active .force-arrow-rigid {
      transform: translateY(6px);
    }

    @media (max-width: 380px) {
      .grid-container {
        gap: 8px;
      }
      .tile {
        padding: 8px 6px;
      }
      .badge {
        font-size: 12px;
        padding: 3px 8px;
      }
      .svg-stage {
        height: 85px;
      }
    }
  </style>
</head>
<body>

  <div class="grid-container">
    
    
    <div class="tile active" id="tile-waterproof" onclick="toggleTile('tile-waterproof')">
      <span class="badge badge-waterproof">Waterproof</span>
      <span class="object-name">Rubber Boot</span>
      <div class="svg-stage">
        <svg viewBox="0 0 160 100">
          
          <path d="M 50 20 L 75 20 L 75 52 C 85 55 98 62 112 68 C 118 71 118 78 116 82 L 45 82 C 45 82 45 35 50 20 Z" fill="#fbbf24" stroke="#d97706" stroke-width="2" stroke-linejoin="round"/>
          <path d="M 42 82 L 118 82 C 120 82 120 88 116 88 L 42 88 C 40 88 40 82 42 82 Z" fill="#d97706" stroke="#b45309" stroke-width="1.5"/>
          
          <path d="M 54 26 L 60 26 L 56 60 C 54 60 53 45 54 26 Z" fill="#ffffff" opacity="0.6"/>
          
          <g class="drop-waterproof drop-waterproof-1">
            <path d="M 72 32 C 72 32 78 40 78 44 C 78 47 75 49 72 49 C 69 49 66 47 66 44 C 66 40 72 32 72 32 Z" fill="#0284c7"/>
          </g>
          <g class="drop-waterproof drop-waterproof-2">
            <path d="M 88 44 C 88 44 93 50 93 53 C 93 55 91 57 88 57 C 85 57 83 55 83 53 C 83 50 88 44 88 44 Z" fill="#38bdf8"/>
          </g>
          
          <circle cx="106" cy="67" r="3.5" fill="#38bdf8" stroke="#0284c7" stroke-width="1"/>
          
          <path d="M 85 30 Q 105 45 125 72" fill="none" stroke="#0284c7" stroke-width="2" stroke-dasharray="3,3"/>
          <polygon points="125,72 118,68 123,63" fill="#0284c7"/>
        </svg>
      </div>
      <span class="action-hint">Repels water</span>
    </div>

    
    <div class="tile active" id="tile-absorbent" onclick="toggleTile('tile-absorbent')">
      <span class="badge badge-absorbent">Absorbent</span>
      <span class="object-name">Cellulose Sponge</span>
      <div class="svg-stage">
        <svg viewBox="0 0 160 100">
          
          <rect x="35" y="45" width="90" height="38" rx="8" fill="#fde047" stroke="#ca8a04" stroke-width="2"/>
          
          <rect class="sponge-wetness" x="35" y="45" width="90" height="38" rx="8" fill="#3b82f6"/>
          
          <circle cx="50" cy="56" r="4" fill="#ca8a04" opacity="0.6"/>
          <circle cx="68" cy="62" r="3" fill="#ca8a04" opacity="0.6"/>
          <circle cx="85" cy="54" r="5" fill="#ca8a04" opacity="0.6"/>
          <circle cx="105" cy="60" r="3.5" fill="#ca8a04" opacity="0.6"/>
          <circle cx="56" cy="72" r="3" fill="#ca8a04" opacity="0.6"/>
          <circle cx="95" cy="73" r="4.5" fill="#ca8a04" opacity="0.6"/>
          <circle cx="114" cy="70" r="2.5" fill="#ca8a04" opacity="0.6"/>
          <circle cx="42" cy="65" r="2" fill="#ca8a04" opacity="0.6"/>
          
          <g class="drop-absorbent">
            <path d="M 68 15 C 68 15 74 24 74 28 C 74 31 71 34 68 34 C 65 34 62 31 62 28 C 62 24 68 15 68 15 Z" fill="#2563eb"/>
            <path d="M 92 20 C 92 20 97 27 97 30 C 97 33 95 35 92 35 C 89 35 87 33 87 30 C 87 27 92 20 92 20 Z" fill="#3b82f6"/>
          </g>
          
          <path d="M 80 32 L 80 48" stroke="#1d4ed8" stroke-width="2" stroke-dasharray="2,2"/>
          <polygon points="80,50 77,44 83,44" fill="#1d4ed8"/>
        </svg>
      </div>
      <span class="action-hint">Soaks up water</span>
    </div>

    
    <div class="tile active" id="tile-flexible" onclick="toggleTile('tile-flexible')">
      <span class="badge badge-flexible">Flexible</span>
      <span class="object-name">Silicone Band</span>
      <div class="svg-stage">
        <svg viewBox="0 0 160 100">
          
          <circle cx="30" cy="65" r="4" fill="#94a3b8"/>
          <circle cx="130" cy="65" r="4" fill="#94a3b8"/>
          
          <path id="flexible-path" class="flex-band" d="M 28 65 Q 80 20 132 65" fill="none" stroke="#f59e0b" stroke-width="12" stroke-linecap="round"/>
          <path id="flexible-inner" class="flex-band" d="M 28 65 Q 80 20 132 65" fill="none" stroke="#fbbf24" stroke-width="6" stroke-linecap="round"/>
          
          <g class="force-arrow-flex">
            <line x1="80" y1="12" x2="80" y2="28" stroke="#d97706" stroke-width="2.5"/>
            <polygon points="80,33 74,24 86,24" fill="#d97706"/>
          </g>
          
          <path d="M 60 70 Q 80 50 100 70" fill="none" stroke="#d97706" stroke-width="1.5" stroke-dasharray="3,3" opacity="0.7"/>
        </svg>
      </div>
      <span class="action-hint">Bends easily</span>
    </div>

    
    <div class="tile active" id="tile-rigid" onclick="toggleTile('tile-rigid')">
      <span class="badge badge-rigid">Rigid</span>
      <span class="object-name">Wooden Block</span>
      <div class="svg-stage">
        <svg viewBox="0 0 160 100">
          
          <polygon points="35,52 65,36 125,36 95,52" fill="#d7b899" stroke="#8c6239" stroke-width="1.5"/>
          <polygon points="95,52 125,36 125,72 95,88" fill="#a07148" stroke="#8c6239" stroke-width="1.5"/>
          <polygon points="35,52 95,52 95,88 35,88" fill="#b88655" stroke="#8c6239" stroke-width="1.5"/>
          
          <line x1="45" y1="58" x2="85" y2="58" stroke="#8c6239" stroke-width="1" opacity="0.6"/>
          <line x1="40" y1="70" x2="90" y2="70" stroke="#8c6239" stroke-width="1" opacity="0.6"/>
          <line x1="50" y1="80" x2="80" y2="80" stroke="#8c6239" stroke-width="1" opacity="0.6"/>
          
          <g class="force-arrow-rigid">
            <line x1="65" y1="12" x2="65" y2="30" stroke="#475569" stroke-width="2.5"/>
            <polygon points="65,34 60,26 70,26" fill="#475569"/>
            <line x1="95" y1="12" x2="95" y2="30" stroke="#475569" stroke-width="2.5"/>
            <polygon points="95,34 90,26 100,26" fill="#475569"/>
          </g>
          
          <line x1="30" y1="88" x2="130" y2="88" stroke="#94a3b8" stroke-width="2" stroke-linecap="round"/>
        </svg>
      </div>
      <span class="action-hint">Stays firm</span>
    </div>

  </div>

  <script>
    function toggleTile(id) {
      const tile = document.getElementById(id);
      tile.classList.toggle('active');

      // Adjust silicone path dynamically if needed
      if (id === 'tile-flexible') {
        const outer = document.getElementById('flexible-path');
        const inner = document.getElementById('flexible-inner');
        if (tile.classList.contains('active')) {
          outer.setAttribute('d', 'M 28 65 Q 80 20 132 65');
          inner.setAttribute('d', 'M 28 65 Q 80 20 132 65');
        } else {
          outer.setAttribute('d', 'M 28 65 Q 80 65 132 65');
          inner.setAttribute('d', 'M 28 65 Q 80 65 132 65');
        }
      }
    }

    // Auto-pulse interactive cycle gently every 3.5 seconds
    let step = 0;
    const tiles = ['tile-waterproof', 'tile-absorbent', 'tile-flexible', 'tile-rigid'];
    
    setInterval(() => {
      tiles.forEach((tId, idx) => {
        const el = document.getElementById(tId);
        if (idx === step) {
          el.classList.add('active');
          if (tId === 'tile-flexible') {
            document.getElementById('flexible-path').setAttribute('d', 'M 28 65 Q 80 20 132 65');
            document.getElementById('flexible-inner').setAttribute('d', 'M 28 65 Q 80 20 132 65');
          }
        }
      });
      step = (step + 1) % tiles.length;
    }, 3200);
  </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: #ffffff;
      color: #1e2945;
      padding: 8px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      min-height: 100%;
    }
    .diagram-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      width: 100%;
      max-width: 600px;
    }
    .bin {
      border-radius: 12px;
      padding: 10px;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .bin-waterproof {
      background: #f0f9ff;
      border: 2px solid #38bdf8;
    }
    .bin-absorbent {
      background: #fffbeb;
      border: 2px solid #f59e0b;
    }
    .bin-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 14px;
      font-weight: 700;
      padding-bottom: 4px;
      border-bottom: 1px dashed rgba(0, 0, 0, 0.12);
    }
    .bin-waterproof .bin-header {
      color: #0369a1;
    }
    .bin-absorbent .bin-header {
      color: #b45309;
    }
    .badge {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 20px;
      height: 20px;
      border-radius: 50%;
      font-size: 12px;
      font-weight: bold;
      color: #fff;
    }
    .badge-check {
      background: #0284c7;
    }
    .badge-cross {
      background: #d97706;
    }
    .item-card {
      background: #ffffff;
      border-radius: 8px;
      padding: 6px 8px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
      border: 1px solid rgba(0, 0, 0, 0.06);
      position: relative;
      overflow: hidden;
    }
    .item-info {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      font-weight: 600;
      color: #334155;
    }
    .item-icon {
      font-size: 18px;
      line-height: 1;
    }
    .water-fx {
      position: relative;
      width: 44px;
      height: 24px;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    /* Waterproof animation: droplet rolls OFF */
    .drop-repel {
      position: absolute;
      font-size: 12px;
      animation: rollOff 2.4s cubic-bezier(0.4, 0, 0.2, 1) infinite;
    }
    @keyframes rollOff {
      0% {
        opacity: 0;
        transform: translate(-10px, -8px) scale(0.6);
      }
      20% {
        opacity: 1;
        transform: translate(-4px, -2px) scale(1);
      }
      50% {
        opacity: 1;
        transform: translate(6px, 2px) rotate(15deg);
      }
      80%, 100% {
        opacity: 0;
        transform: translate(18px, 12px) rotate(35deg) scale(0.7);
      }
    }
    .repel-barrier {
      width: 22px;
      height: 14px;
      border: 2px solid #38bdf8;
      border-radius: 4px;
      background: #e0f2fe;
    }

    /* Absorbent animation: droplet SOAKS IN */
    .drop-soak {
      position: absolute;
      font-size: 12px;
      animation: soakIn 2.4s cubic-bezier(0.4, 0, 0.2, 1) infinite;
      z-index: 2;
    }
    .soak-patch {
      width: 22px;
      height: 14px;
      border: 2px dashed #f59e0b;
      border-radius: 4px;
      background: #fef3c7;
      position: relative;
      overflow: hidden;
    }
    .soak-fill {
      position: absolute;
      inset: 0;
      background: #fde68a;
      animation: expandWet 2.4s cubic-bezier(0.4, 0, 0.2, 1) infinite;
      border-radius: 2px;
    }
    @keyframes soakIn {
      0% {
        opacity: 0;
        transform: translateY(-8px) scale(0.6);
      }
      20% {
        opacity: 1;
        transform: translateY(-2px) scale(1);
      }
      50% {
        opacity: 0.8;
        transform: translateY(2px) scale(0.7);
      }
      70%, 100% {
        opacity: 0;
        transform: translateY(4px) scale(0.2);
      }
    }
    @keyframes expandWet {
      0%, 20% {
        opacity: 0;
        transform: scale(0.3);
      }
      50% {
        opacity: 0.8;
        transform: scale(0.8);
      }
      70%, 100% {
        opacity: 1;
        transform: scale(1);
      }
    }

    /* Staggered animations */
    .item-card:nth-child(2) .drop-repel,
    .item-card:nth-child(2) .drop-soak,
    .item-card:nth-child(2) .soak-fill {
      animation-delay: 0.4s;
    }
    .item-card:nth-child(3) .drop-repel,
    .item-card:nth-child(3) .drop-soak,
    .item-card:nth-child(3) .soak-fill {
      animation-delay: 0.8s;
    }
    .item-card:nth-child(4) .drop-repel,
    .item-card:nth-child(4) .drop-soak,
    .item-card:nth-child(4) .soak-fill {
      animation-delay: 1.2s;
    }

    .action-row {
      display: flex;
      justify-content: space-between;
      width: 100%;
      max-width: 600px;
      margin-top: 8px;
      padding: 0 4px;
      font-size: 11px;
      font-weight: 600;
    }
    .action-waterproof {
      color: #0284c7;
    }
    .action-absorbent {
      color: #d97706;
    }

    @media (max-width: 440px) {
      .diagram-grid {
        grid-template-columns: 1fr;
        gap: 10px;
      }
      .item-info {
        font-size: 12px;
      }
    }
  </style>
</head>
<body>

  <div class="diagram-grid">
    
    <div class="bin bin-waterproof">
      <div class="bin-header">
        <span>Waterproof</span>
        <span class="badge badge-check">✓</span>
      </div>
      
      <div class="item-card">
        <div class="item-info">
          <span class="item-icon">🧥</span>
          <span>Plastic Raincoat</span>
        </div>
        <div class="water-fx">
          <div class="repel-barrier"></div>
          <span class="drop-repel">💧</span>
        </div>
      </div>

      <div class="item-card">
        <div class="item-info">
          <span class="item-icon">🥾</span>
          <span>Rubber Boot</span>
        </div>
        <div class="water-fx">
          <div class="repel-barrier"></div>
          <span class="drop-repel">💧</span>
        </div>
      </div>

      <div class="item-card">
        <div class="item-info">
          <span class="item-icon">🔑</span>
          <span>Metal Key</span>
        </div>
        <div class="water-fx">
          <div class="repel-barrier"></div>
          <span class="drop-repel">💧</span>
        </div>
      </div>
    </div>

    
    <div class="bin bin-absorbent">
      <div class="bin-header">
        <span>Absorbent</span>
        <span class="badge badge-cross">✗</span>
      </div>

      <div class="item-card">
        <div class="item-info">
          <span class="item-icon">🧻</span>
          <span>Paper Napkin</span>
        </div>
        <div class="water-fx">
          <div class="soak-patch">
            <div class="soak-fill"></div>
          </div>
          <span class="drop-soak">💧</span>
        </div>
      </div>

      <div class="item-card">
        <div class="item-info">
          <span class="item-icon">🧦</span>
          <span>Cotton Sock</span>
        </div>
        <div class="water-fx">
          <div class="soak-patch">
            <div class="soak-fill"></div>
          </div>
          <span class="drop-soak">💧</span>
        </div>
      </div>

      <div class="item-card">
        <div class="item-info">
          <span class="item-icon">🧽</span>
          <span>Kitchen Sponge</span>
        </div>
        <div class="water-fx">
          <div class="soak-patch">
            <div class="soak-fill"></div>
          </div>
          <span class="drop-soak">💧</span>
        </div>
      </div>
    </div>
  </div>

  <div class="action-row">
    <span class="action-waterproof">💧 Repels water</span>
    <span class="action-absorbent">💧 Soaks up water</span>
  </div>

</body>
</html>

science.ks1.y1.t3.s4

Aligned learning resources

Related diagrams