<!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>Sensory Boundaries: Wafting</title>
  <style>
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    body {
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      background: #f8fafc;
      color: #1e2945;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: space-between;
      min-height: 100%;
      padding: 12px;
      gap: 10px;
    }

    .panels {
      display: flex;
      flex-direction: row;
      gap: 12px;
      width: 100%;
      max-width: 640px;
      flex: 1;
    }

    .panel {
      flex: 1;
      background: #ffffff;
      border-radius: 16px;
      padding: 12px 8px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: space-between;
      box-shadow: 0 3px 12px rgba(0, 0, 0, 0.05);
      position: relative;
      border: 2px solid transparent;
    }

    .panel.unsafe {
      border-color: #fecaca;
      background: #fffafa;
    }

    .panel.safe {
      border-color: #bbf7d0;
      background: #f6fdf8;
    }

    .badge {
      font-size: 15px;
      font-weight: 700;
      padding: 6px 14px;
      border-radius: 20px;
      display: flex;
      align-items: center;
      gap: 6px;
      text-align: center;
    }

    .badge.unsafe {
      background: #fee2e2;
      color: #b91c1c;
    }

    .badge.safe {
      background: #dcfce7;
      color: #15803d;
    }

    .graphic-box {
      width: 100%;
      height: 200px;
      position: relative;
      display: flex;
      align-items: center;
      justify-content: center;
    }

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

    /* Safe Wafting Animations */
    .waft-hand {
      transform-origin: 150px 105px;
      animation: waveHand 2.4s ease-in-out infinite;
    }

    @keyframes waveHand {
      0%, 100% { transform: rotate(0deg) translateX(0); }
      25% { transform: rotate(-18deg) translateX(-6px); }
      50% { transform: rotate(12deg) translateX(4px); }
      75% { transform: rotate(-12deg) translateX(-4px); }
    }

    .puff {
      opacity: 0;
      animation: driftScent 2.4s ease-out infinite;
    }

    .puff-1 { animation-delay: 0.2s; }
    .puff-2 { animation-delay: 0.8s; }
    .puff-3 { animation-delay: 1.4s; }

    @keyframes driftScent {
      0% {
        opacity: 0;
        transform: translate(0, 0) scale(0.6);
      }
      20% {
        opacity: 0.85;
      }
      80% {
        opacity: 0.7;
      }
      100% {
        opacity: 0;
        transform: translate(60px, -45px) scale(1.3);
      }
    }

    /* Unsafe direct fumes animation */
    .fume-direct {
      animation: directFume 1.6s ease-in-out infinite alternate;
    }

    @keyframes directFume {
      0% { transform: translateY(0); opacity: 0.7; }
      100% { transform: translateY(-4px); opacity: 1; }
    }

    .btn-waft {
      background: #22c55e;
      color: #ffffff;
      border: none;
      border-radius: 12px;
      padding: 8px 18px;
      font-size: 15px;
      font-weight: 700;
      cursor: pointer;
      display: flex;
      align-items: center;
      gap: 6px;
      box-shadow: 0 2px 8px rgba(34, 197, 94, 0.35);
      user-select: none;
    }

    .btn-waft:active {
      transform: scale(0.97);
      background: #16a34a;
    }

    @media (max-width: 480px) {
      .panels {
        flex-direction: column;
      }
      .graphic-box {
        height: 150px;
      }
      .badge {
        font-size: 14px;
        padding: 4px 10px;
      }
    }
  </style>
</head>
<body>

  <div class="panels">
    
    <div class="panel unsafe">
      <div class="badge unsafe">❌ Never Sniff Directly</div>
      <div class="graphic-box">
        <svg viewBox="0 0 220 180">
          
          <rect x="20" y="160" width="180" height="8" rx="4" fill="#cbd5e1"/>
          
          
          <path d="M 80,110 L 80,155 Q 80,160 85,160 L 125,160 Q 130,160 130,155 L 130,110 Z" fill="#fee2e2" stroke="#ef4444" stroke-width="3"/>
          <rect x="75" y="106" width="60" height="5" rx="2" fill="#ef4444"/>
          
          <path d="M 82,130 L 82,156 Q 82,158 85,158 L 125,158 Q 128,158 128,156 L 128,130 Q 105,134 82,130 Z" fill="#f87171"/>
          
          
          <g class="fume-direct">
            <path d="M 98,125 Q 90,95 102,75" stroke="#ef4444" stroke-width="3.5" stroke-linecap="round" fill="none" stroke-dasharray="4 3"/>
            <path d="M 112,125 Q 120,95 108,75" stroke="#ef4444" stroke-width="3.5" stroke-linecap="round" fill="none" stroke-dasharray="4 3"/>
          </g>

          
          
          <circle cx="105" cy="48" r="28" fill="#fed7aa" stroke="#ea580c" stroke-width="2.5"/>
          
          <path d="M 80,42 Q 105,18 130,42 Q 125,24 105,24 Q 85,24 80,42 Z" fill="#78350f"/>
          
          <path d="M 94,46 L 100,50 M 100,46 L 94,50" stroke="#9a3412" stroke-width="2.5" stroke-linecap="round"/>
          <path d="M 110,46 L 116,50 M 116,46 L 110,50" stroke="#9a3412" stroke-width="2.5" stroke-linecap="round"/>
          
          <ellipse cx="105" cy="56" rx="4" ry="5" fill="#f97316"/>
          
          <path d="M 100,68 Q 105,63 110,68" stroke="#9a3412" stroke-width="2.5" fill="none" stroke-linecap="round"/>

          
          <circle cx="105" cy="90" r="52" fill="none" stroke="#dc2626" stroke-width="6" opacity="0.9"/>
          <line x1="68" y1="53" x2="142" y2="127" stroke="#dc2626" stroke-width="6" opacity="0.9"/>
        </svg>
      </div>
    </div>

    
    <div class="panel safe">
      <div class="badge safe">✅ Safe Wafting Wave</div>
      <div class="graphic-box">
        <svg viewBox="0 0 220 180">
          
          <rect x="15" y="160" width="190" height="8" rx="4" fill="#cbd5e1"/>

          
          <path d="M 35,115 L 35,155 Q 35,160 40,160 L 75,160 Q 80,160 80,155 L 80,115 Z" fill="#dcfce7" stroke="#16a34a" stroke-width="3"/>
          <rect x="30" y="111" width="55" height="5" rx="2" fill="#16a34a"/>
          
          <path d="M 37,135 L 37,156 Q 37,158 40,158 L 75,158 Q 78,158 78,156 L 78,135 Q 57,139 37,135 Z" fill="#4ade80"/>

          
          <path d="M 60,95 Q 105,75 142,66" fill="none" stroke="#86efac" stroke-width="3" stroke-dasharray="4 4" stroke-linecap="round"/>
          <polygon points="144,66 136,62 138,70" fill="#22c55e"/>

          
          <g class="puff puff-1">
            <circle cx="68" cy="98" r="6" fill="#86efac" opacity="0.8"/>
            <circle cx="73" cy="95" r="4.5" fill="#4ade80" opacity="0.6"/>
          </g>
          <g class="puff puff-2">
            <circle cx="70" cy="100" r="7" fill="#86efac" opacity="0.8"/>
            <circle cx="76" cy="96" r="5" fill="#22c55e" opacity="0.6"/>
          </g>
          <g class="puff puff-3">
            <circle cx="66" cy="96" r="5" fill="#4ade80" opacity="0.7"/>
          </g>

          
          <g id="waftHandGroup" class="waft-hand">
            
            <path d="M 125,120 L 98,105 L 104,95 L 130,110 Z" fill="#38bdf8"/>
            
            <path d="M 98,105 C 88,100 82,90 74,90 C 70,90 68,93 72,96 C 76,99 82,102 88,107 C 84,107 78,105 76,108 C 74,110 77,113 82,113 C 86,113 90,112 95,114 Z" fill="#fed7aa" stroke="#ea580c" stroke-width="1.5"/>
            
            <path d="M 64,84 Q 72,80 80,84" stroke="#0ea5e9" stroke-width="2" stroke-linecap="round" fill="none"/>
            <path d="M 68,77 Q 76,73 84,77" stroke="#0ea5e9" stroke-width="1.5" stroke-linecap="round" fill="none"/>
          </g>

          
          
          <path d="M 145,105 L 185,105 L 195,160 L 135,160 Z" fill="#ffffff" stroke="#94a3b8" stroke-width="2"/>
          <path d="M 155,105 L 165,125 L 175,105 Z" fill="#38bdf8"/>
          
          <circle cx="165" cy="62" r="26" fill="#fed7aa" stroke="#ea580c" stroke-width="2.5"/>
          
          <path d="M 142,56 Q 165,34 188,56 Q 185,40 165,40 Q 146,40 142,56 Z" fill="#b45309"/>
          
          <circle cx="156" cy="58" r="3" fill="#1e2945"/>
          <circle cx="157" cy="57" r="1" fill="#ffffff"/>
          
          <path d="M 148,64 Q 144,66 148,68" stroke="#ea580c" stroke-width="2.5" stroke-linecap="round" fill="none"/>
          
          <path d="M 152,73 Q 158,78 165,73" stroke="#9a3412" stroke-width="2.5" fill="none" stroke-linecap="round"/>
          
          <rect x="145" y="52" width="22" height="13" rx="5" fill="#38bdf8" fill-opacity="0.3" stroke="#0284c7" stroke-width="2"/>
          <line x1="167" y1="58" x2="188" y2="58" stroke="#0284c7" stroke-width="2"/>
        </svg>
      </div>
    </div>
  </div>

  
  <button id="waftBtn" class="btn-waft">
    <span>👋</span>
    <span>Tap to Wave Hand</span>
  </button>

  <script>
    const btn = document.getElementById('waftBtn');
    const hand = document.getElementById('waftHandGroup');
    const puffs = document.querySelectorAll('.puff');

    btn.addEventListener('click', () => {
      // Re-trigger visual wave pulse
      hand.style.animation = 'none';
      puffs.forEach(p => p.style.animation = 'none');
      
      void hand.offsetWidth; // Trigger reflow
      
      hand.style.animation = 'waveHand 1.2s ease-in-out 2';
      puffs.forEach((p, idx) => {
        p.style.animation = `driftScent 1.2s ease-out ${idx * 0.3}s 2`;
      });
    });
  </script>
</body>
</html>

Classroom Science Safety Rules and Clean-Up

<!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;
      color: #1e2945;
      background: transparent;
      padding: 12px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      min-height: 100%;
    }

    /* Controls bar */
    .controls {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      margin-bottom: 14px;
      width: 100%;
      max-width: 520px;
    }

    .step-btn {
      flex: 1;
      padding: 8px 6px;
      font-size: 14px;
      font-weight: 700;
      border: 2px solid #e2e8f0;
      border-radius: 999px;
      background: #ffffff;
      color: #64748b;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
      transition: all 0.25s ease;
      box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    }

    .step-btn.active {
      border-color: #38bdf8;
      background: #e0f2fe;
      color: #0369a1;
      box-shadow: 0 2px 6px rgba(56, 189, 248, 0.25);
    }

    .play-btn {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      border: 2px solid #e2e8f0;
      background: #ffffff;
      color: #0369a1;
      font-size: 14px;
      font-weight: bold;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
      transition: background 0.2s ease;
    }

    .play-btn:active {
      background: #f1f5f9;
    }

    /* Cards container */
    .steps-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 10px;
      width: 100%;
      max-width: 540px;
    }

    @media (max-width: 440px) {
      .steps-grid {
        grid-template-columns: 1fr;
        gap: 8px;
      }
      .step-tile {
        flex-direction: row !important;
        text-align: left !important;
        padding: 10px 14px !important;
        justify-content: flex-start !important;
      }
      .icon-box {
        font-size: 32px !important;
        margin-bottom: 0 !important;
        margin-right: 12px;
      }
      .tile-text {
        display: flex;
        flex-direction: column;
      }
    }

    .step-tile {
      background: #ffffff;
      border-radius: 16px;
      border: 2px solid #e2e8f0;
      padding: 16px 10px;
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      cursor: pointer;
      position: relative;
      transition: border-color 0.3s ease, transform 0.2s ease, box-shadow 0.3s ease, background 0.3s ease;
    }

    .step-tile.active {
      border-color: #38bdf8;
      background: #f0f9ff;
      box-shadow: 0 4px 12px rgba(56, 189, 248, 0.18);
    }

    .badge {
      position: absolute;
      top: -10px;
      left: 50%;
      transform: translateX(-50%);
      background: #cbd5e1;
      color: #334155;
      font-size: 11px;
      font-weight: 800;
      padding: 2px 8px;
      border-radius: 12px;
      letter-spacing: 0.5px;
      transition: background 0.3s ease, color 0.3s ease;
    }

    @media (max-width: 440px) {
      .badge {
        left: 14px;
        transform: none;
        top: -8px;
      }
    }

    .step-tile.active .badge {
      background: #0284c7;
      color: #ffffff;
    }

    .icon-box {
      font-size: 42px;
      line-height: 1;
      margin-top: 4px;
      margin-bottom: 8px;
      position: relative;
      user-select: none;
    }

    .animated-element {
      display: inline-block;
      transition: transform 0.3s ease;
    }

    .step-tile.active .animated-element {
      animation: gentle-pulse 2s infinite ease-in-out;
    }

    @keyframes gentle-pulse {
      0%, 100% { transform: translateY(0px) scale(1); }
      50% { transform: translateY(-4px) scale(1.06); }
    }

    .title {
      font-size: 15px;
      font-weight: 800;
      color: #0f172a;
      margin-bottom: 2px;
    }

    .subtitle {
      font-size: 13px;
      font-weight: 600;
      color: #0284c7;
    }
  </style>
</head>
<body>

  
  <div class="controls">
    <button class="step-btn active" id="btn-0" onclick="goToStep(0)">
      <span>1</span> Wet & Soap
    </button>
    <button class="step-btn" id="btn-1" onclick="goToStep(1)">
      <span>2</span> Scrub 20s
    </button>
    <button class="step-btn" id="btn-2" onclick="goToStep(2)">
      <span>3</span> Rinse & Dry
    </button>
    <button class="play-btn" id="playBtn" onclick="togglePlay()" aria-label="Play/Pause">⏸</button>
  </div>

  
  <div class="steps-grid">
    
    <div class="step-tile active" id="tile-0" onclick="goToStep(0)">
      <div class="badge">STEP 1</div>
      <div class="icon-box">
        <span class="animated-element">🧼 🫧</span>
      </div>
      <div class="tile-text">
        <div class="title">Wet & Soap</div>
        <div class="subtitle">Make bubbles</div>
      </div>
    </div>

    
    <div class="step-tile" id="tile-1" onclick="goToStep(1)">
      <div class="badge">STEP 2</div>
      <div class="icon-box">
        <span class="animated-element">⏱️ 🎵</span>
      </div>
      <div class="tile-text">
        <div class="title">Scrub 20s</div>
        <div class="subtitle">Sing 2× 🎂</div>
      </div>
    </div>

    
    <div class="step-tile" id="tile-2" onclick="goToStep(2)">
      <div class="badge">STEP 3</div>
      <div class="icon-box">
        <span class="animated-element">🚰 🧻</span>
      </div>
      <div class="tile-text">
        <div class="title">Rinse & Dry</div>
        <div class="subtitle">Clean & fresh!</div>
      </div>
    </div>
  </div>

  <script>
    let currentStep = 0;
    let isPlaying = true;
    let timer = null;

    function updateView() {
      for (let i = 0; i < 3; i++) {
        const btn = document.getElementById('btn-' + i);
        const tile = document.getElementById('tile-' + i);
        if (i === currentStep) {
          btn.classList.add('active');
          tile.classList.add('active');
        } else {
          btn.classList.remove('active');
          tile.classList.remove('active');
        }
      }
    }

    function goToStep(idx) {
      currentStep = idx;
      updateView();
      resetInterval();
    }

    function nextStep() {
      currentStep = (currentStep + 1) % 3;
      updateView();
    }

    function togglePlay() {
      isPlaying = !isPlaying;
      document.getElementById('playBtn').textContent = isPlaying ? '⏸' : '▶';
      if (isPlaying) {
        resetInterval();
      } else {
        clearInterval(timer);
      }
    }

    function resetInterval() {
      clearInterval(timer);
      if (isPlaying) {
        timer = setInterval(nextStep, 3200);
      }
    }

    // Initialize auto-play
    resetInterval();
  </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;
      user-select: none;
      -webkit-user-select: none;
    }
    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;
      padding: 16px;
      min-height: 100%;
    }

    .header {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 6px;
      margin-bottom: 16px;
      width: 100%;
      max-width: 420px;
    }

    .status-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 15px;
      font-weight: 700;
      padding: 6px 14px;
      border-radius: 999px;
      background: #f1f5f9;
      color: #64748b;
      transition: all 0.3s ease;
    }

    .status-badge.ready {
      background: #ecfdf5;
      color: #059669;
      box-shadow: 0 0 0 2px #10b981;
    }

    .star-icon {
      font-size: 18px;
      filter: grayscale(1) opacity(0.4);
      transition: filter 0.3s ease;
    }

    .status-badge.ready .star-icon {
      filter: grayscale(0) opacity(1);
    }

    .progress-bar-track {
      width: 100%;
      height: 6px;
      background: #e2e8f0;
      border-radius: 999px;
      overflow: hidden;
    }

    .progress-bar-fill {
      height: 100%;
      width: 0%;
      background: #10b981;
      border-radius: 999px;
      transition: width 0.3s ease;
    }

    .checklist {
      display: flex;
      flex-direction: column;
      gap: 10px;
      width: 100%;
      max-width: 420px;
    }

    .item {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 12px 14px;
      background: #f8fafc;
      border: 1.5px solid #e2e8f0;
      border-radius: 12px;
      cursor: pointer;
      transition: background 0.2s ease, border-color 0.2s ease;
    }

    .item:hover {
      background: #f1f5f9;
    }

    .item.checked {
      background: #f0fdf4;
      border-color: #86efac;
    }

    .icon-box {
      font-size: 22px;
      width: 36px;
      height: 36px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: #ffffff;
      border-radius: 8px;
      box-shadow: 0 1px 3px rgba(0,0,0,0.06);
      flex-shrink: 0;
    }

    .label-text {
      flex: 1;
      font-size: 14px;
      font-weight: 600;
      color: #334155;
      line-height: 1.3;
    }

    .item.checked .label-text {
      color: #15803d;
    }

    .checkbox {
      width: 26px;
      height: 26px;
      border-radius: 50%;
      border: 2px solid #cbd5e1;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
      background: #ffffff;
      transition: all 0.2s ease;
    }

    .item.checked .checkbox {
      background: #10b981;
      border-color: #10b981;
      color: #ffffff;
    }

    .checkmark {
      font-size: 14px;
      font-weight: bold;
      opacity: 0;
      transition: opacity 0.2s ease;
    }

    .item.checked .checkmark {
      opacity: 1;
    }
  </style>
</head>
<body>

  <div class="header">
    <div id="statusBadge" class="status-badge">
      <span class="star-icon">⭐</span>
      <span id="statusText">0 / 4 Complete</span>
    </div>
    <div class="progress-bar-track">
      <div id="progressFill" class="progress-bar-fill"></div>
    </div>
  </div>

  <div class="checklist">
    <div class="item" onclick="toggleItem(this)">
      <div class="icon-box">⚠️</div>
      <div class="label-text">Tell teacher about spills</div>
      <div class="checkbox"><span class="checkmark">✓</span></div>
    </div>

    <div class="item" onclick="toggleItem(this)">
      <div class="icon-box">🗑️</div>
      <div class="label-text">Trash used towels</div>
      <div class="checkbox"><span class="checkmark">✓</span></div>
    </div>

    <div class="item" onclick="toggleItem(this)">
      <div class="icon-box">📥</div>
      <div class="label-text">Return tools to bins</div>
      <div class="checkbox"><span class="checkmark">✓</span></div>
    </div>

    <div class="item" onclick="toggleItem(this)">
      <div class="icon-box">🧽</div>
      <div class="label-text">Wipe table clean & dry</div>
      <div class="checkbox"><span class="checkmark">✓</span></div>
    </div>
  </div>

  <script>
    function playTone(freq, dur) {
      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(0.15, ctx.currentTime);
        gain.gain.exponentialRampToValueAtTime(0.001, ctx.currentTime + dur);
        osc.start();
        osc.stop(ctx.currentTime + dur);
      } catch (e) {}
    }

    function toggleItem(el) {
      el.classList.toggle('checked');
      updateProgress();
    }

    function updateProgress() {
      const items = document.querySelectorAll('.item');
      const checkedCount = document.querySelectorAll('.item.checked').length;
      const total = items.length;
      const pct = (checkedCount / total) * 100;

      const progressFill = document.getElementById('progressFill');
      const statusBadge = document.getElementById('statusBadge');
      const statusText = document.getElementById('statusText');

      progressFill.style.width = pct + '%';

      if (checkedCount === total) {
        statusBadge.classList.add('ready');
        statusText.textContent = 'Station Ready! ⭐';
        playTone(587.33, 0.1);
        setTimeout(() => playTone(880, 0.3), 120);
      } else {
        statusBadge.classList.remove('ready');
        statusText.textContent = checkedCount + ' / ' + total + ' Complete';
        if (checkedCount > 0) {
          playTone(440 + (checkedCount * 60), 0.15);
        }
      }
    }
  </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>Eye Protection with Safety Goggles</title>
  <style>
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      width: 100%;
      min-height: 100vh;
      background: #f8fafc;
      font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
      color: #0f172a;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 16px;
    }

    .comparison-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      width: 100%;
      max-width: 620px;
      align-items: start;
    }

    @media (max-width: 420px) {
      .comparison-grid {
        grid-template-columns: 1fr;
        gap: 24px;
      }
    }

    .column {
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      background: transparent;
      border: none;
      box-shadow: none;
      padding: 0;
    }

    .badge {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
      padding: 6px 14px;
      border-radius: 999px;
      font-size: 14px;
      font-weight: 800;
      letter-spacing: 0.2px;
      margin-bottom: 8px;
    }

    .badge-unsafe {
      background: #fee2e2;
      color: #7f1d1d;
      border: 1.5px solid #fca5a5;
    }

    .badge-safe {
      background: #dcfce7;
      color: #14532d;
      border: 1.5px solid #86efac;
    }

    .stage {
      width: 100%;
      max-width: 220px;
      aspect-ratio: 1 / 1;
      position: relative;
    }

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

    .caption {
      font-size: 15px;
      font-weight: 700;
      margin-top: 8px;
      line-height: 1.35;
      max-width: 240px;
    }

    .unsafe-text {
      color: #991b1b;
    }

    .safe-text {
      color: #166534;
    }

    /* Droplet & impact animations (Cycle: 4.5s with >=500ms per phase) */
    @keyframes unsafeSplash {
      0% {
        transform: translate(0, 0) scale(0.6);
        opacity: 0;
      }
      12% {
        opacity: 1;
      }
      50% {
        transform: translate(78px, -42px) scale(1.1);
        opacity: 1;
      }
      65%, 100% {
        transform: translate(84px, -44px) scale(1.25);
        opacity: 0;
      }
    }

    @keyframes unsafeWarning {
      0%, 42% {
        opacity: 0;
        transform: scale(0.6);
      }
      52% {
        opacity: 1;
        transform: scale(1.15);
      }
      68% {
        opacity: 1;
        transform: scale(1.2);
      }
      80%, 100% {
        opacity: 0;
        transform: scale(1.35);
      }
    }

    @keyframes safeSplash {
      0% {
        transform: translate(0, 0) scale(0.6);
        opacity: 0;
      }
      12% {
        opacity: 1;
      }
      44% {
        transform: translate(66px, -36px) scale(1);
        opacity: 1;
      }
      68% {
        transform: translate(46px, 12px) scale(0.75);
        opacity: 0.95;
      }
      82%, 100% {
        transform: translate(36px, 32px) scale(0.4);
        opacity: 0;
      }
    }

    @keyframes shieldBounce {
      0%, 40% {
        transform: scale(1);
        filter: drop-shadow(0 0 0 rgba(2, 132, 199, 0));
      }
      48% {
        transform: scale(1.06);
        filter: drop-shadow(0 0 6px rgba(2, 132, 199, 0.8));
      }
      64% {
        transform: scale(1.02);
        filter: drop-shadow(0 0 4px rgba(2, 132, 199, 0.4));
      }
      75%, 100% {
        transform: scale(1);
        filter: drop-shadow(0 0 0 rgba(2, 132, 199, 0));
      }
    }

    @keyframes sparkleGlow {
      0%, 40% {
        opacity: 0;
        transform: scale(0.3) rotate(0deg);
      }
      50% {
        opacity: 1;
        transform: scale(1.25) rotate(35deg);
      }
      65% {
        opacity: 0.9;
        transform: scale(1.1) rotate(60deg);
      }
      78%, 100% {
        opacity: 0;
        transform: scale(0.4) rotate(90deg);
      }
    }

    @keyframes liquidBubble {
      0%, 100% { transform: translateY(0); }
      50% { transform: translateY(-3px); }
    }

    .drop-unsafe {
      animation: unsafeSplash 4.5s cubic-bezier(0.25, 0.1, 0.25, 1) infinite;
      transform-origin: 37px 126px;
    }

    .danger-burst {
      animation: unsafeWarning 4.5s ease-out infinite;
      transform-origin: 112px 86px;
    }

    .drop-safe {
      animation: safeSplash 4.5s cubic-bezier(0.2, 0.6, 0.35, 1) infinite;
      transform-origin: 37px 126px;
    }

    .goggle-shield {
      animation: shieldBounce 4.5s ease-out infinite;
      transform-origin: 121px 86px;
    }

    .sparkle {
      animation: sparkleGlow 4.5s ease-out infinite;
      transform-origin: 104px 84px;
    }

    .bubble {
      animation: liquidBubble 2.2s ease-in-out infinite;
    }
  </style>
</head>
<body>

  <div class="comparison-grid">
    
    <div class="column">
      <div class="badge badge-unsafe">✕ Unprotected</div>
      <div class="stage">
        <svg viewBox="0 0 170 170" aria-label="Unprotected eyes exposed to liquid splash">
          
          <line x1="10" y1="160" x2="160" y2="160" stroke="#cbd5e1" stroke-width="3" stroke-linecap="round"/>

          
          <path d="M 28 156 L 46 156 L 40 126 L 40 114 L 34 114 L 34 126 Z" fill="#e2e8f0" stroke="#64748b" stroke-width="2"/>
          <path d="M 30 154 L 44 154 L 39 132 L 35 132 Z" fill="#ef4444" opacity="0.85"/>
          <circle class="bubble" cx="37" cy="136" r="2" fill="#ffffff" opacity="0.8"/>
          
          
          
          <circle cx="124" cy="88" r="32" fill="#78350f"/>
          
          <circle cx="122" cy="90" r="28" fill="#fcd34d"/>
          
          <path d="M 98 80 Q 120 62 144 76 Q 134 68 116 68 Z" fill="#78350f"/>
          
          
          <ellipse cx="112" cy="86" rx="5.5" ry="6" fill="#ffffff"/>
          <circle cx="111" cy="86" r="3" fill="#1e293b"/>
          <circle cx="110" cy="84" r="1" fill="#ffffff"/>
          
          <ellipse cx="130" cy="86" rx="5.5" ry="6" fill="#ffffff"/>
          <circle cx="129" cy="86" r="3" fill="#1e293b"/>
          <circle cx="128" cy="84" r="1" fill="#ffffff"/>
          
          
          <path d="M 106 77 Q 112 74 118 78" stroke="#78350f" stroke-width="2" fill="none" stroke-linecap="round"/>
          <path d="M 124 78 Q 130 74 136 77" stroke="#78350f" stroke-width="2" fill="none" stroke-linecap="round"/>
          
          
          <ellipse cx="120" cy="104" rx="4" ry="5" fill="#991b1b"/>
          
          
          <path d="M 98 160 Q 120 125 146 160 Z" fill="#f97316"/>

          
          <path d="M 37 126 Q 70 82 112 86" stroke="#fca5a5" stroke-width="1.5" stroke-dasharray="3 3" fill="none"/>

          
          <g class="danger-burst">
            <circle cx="112" cy="86" r="14" fill="#fee2e2" opacity="0.6"/>
            <path d="M 112 68 L 112 74 M 112 98 L 112 104 M 94 86 L 100 86 M 124 86 L 130 86 M 100 74 L 104 78 M 120 94 L 124 98 M 100 98 L 104 94 M 120 78 L 124 74" stroke="#dc2626" stroke-width="2.5" stroke-linecap="round"/>
          </g>

          
          <g class="drop-unsafe">
            <path d="M 37 126 C 35 123, 33 120, 37 116 C 41 120, 39 123, 37 126 Z" fill="#ef4444"/>
          </g>
        </svg>
      </div>
      <div class="caption unsafe-text">Liquid splash can reach sensitive eyes!</div>
    </div>

    
    <div class="column">
      <div class="badge badge-safe">✓ Shield Protected</div>
      <div class="stage">
        <svg viewBox="0 0 170 170" aria-label="Protected eyes with safety goggles deflecting splashes">
          
          <line x1="10" y1="160" x2="160" y2="160" stroke="#cbd5e1" stroke-width="3" stroke-linecap="round"/>

          
          <path d="M 28 156 L 46 156 L 40 126 L 40 114 L 34 114 L 34 126 Z" fill="#e2e8f0" stroke="#64748b" stroke-width="2"/>
          <path d="M 30 154 L 44 154 L 39 132 L 35 132 Z" fill="#ef4444" opacity="0.85"/>
          <circle class="bubble" cx="37" cy="136" r="2" fill="#ffffff" opacity="0.8"/>

          
          
          <circle cx="124" cy="88" r="32" fill="#78350f"/>
          
          <circle cx="122" cy="90" r="28" fill="#fcd34d"/>
          
          <path d="M 98 80 Q 120 62 144 76 Q 134 68 116 68 Z" fill="#78350f"/>
          
          
          <ellipse cx="112" cy="86" rx="5" ry="5" fill="#ffffff"/>
          <circle cx="111" cy="86" r="2.5" fill="#1e293b"/>
          <circle cx="110" cy="85" r="0.8" fill="#ffffff"/>
          
          <ellipse cx="130" cy="86" rx="5" ry="5" fill="#ffffff"/>
          <circle cx="129" cy="86" r="2.5" fill="#1e293b"/>
          <circle cx="128" cy="85" r="0.8" fill="#ffffff"/>

          
          <path d="M 107 76 Q 112 73 117 76" stroke="#78350f" stroke-width="2" fill="none" stroke-linecap="round"/>
          <path d="M 125 76 Q 130 73 135 76" stroke="#78350f" stroke-width="2" fill="none" stroke-linecap="round"/>

          
          <path d="M 115 102 Q 121 108 127 102" stroke="#991b1b" stroke-width="2" fill="none" stroke-linecap="round"/>

          
          
          <path d="M 96 87 L 148 87" stroke="#0284c7" stroke-width="5" stroke-linecap="round"/>
          
          
          <g class="goggle-shield">
            
            <rect x="102" y="76" width="38" height="20" rx="9" fill="#38bdf8" fill-opacity="0.45" stroke="#0284c7" stroke-width="3"/>
            
            <line x1="121" y1="78" x2="121" y2="94" stroke="#0284c7" stroke-width="2"/>
            
            <line x1="106" y1="80" x2="114" y2="92" stroke="#ffffff" stroke-width="2" stroke-linecap="round" opacity="0.9"/>
            <line x1="125" y1="80" x2="133" y2="92" stroke="#ffffff" stroke-width="2" stroke-linecap="round" opacity="0.9"/>
          </g>

          
          <g class="sparkle">
            <path d="M 104 84 L 107 76 L 110 84 L 118 87 L 110 90 L 107 98 L 104 90 L 96 87 Z" fill="#0284c7"/>
            <circle cx="107" cy="87" r="2.5" fill="#ffffff"/>
          </g>

          
          <path d="M 37 126 Q 66 82 103 86" stroke="#93c5fd" stroke-width="1.5" stroke-dasharray="3 3" fill="none"/>
          <path d="M 103 86 Q 84 100 70 126" stroke="#16a34a" stroke-width="2" stroke-dasharray="3 3" fill="none"/>
          <polyline points="68,120 70,127 77,126" fill="none" stroke="#16a34a" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>

          
          <path d="M 98 160 Q 120 125 146 160 Z" fill="#0284c7"/>

          
          <g class="drop-safe">
            <path d="M 37 126 C 35 123, 33 120, 37 116 C 41 120, 39 123, 37 126 Z" fill="#ef4444"/>
          </g>
        </svg>
      </div>
      <div class="caption safe-text">Goggles block splashes and keep eyes safe!</div>
    </div>
  </div>

</body>
</html>

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Science Tools: Hand Lenses, Thermometers, and More

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