<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <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: #f8fafc;
      color: #1e2945;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: space-between;
      min-height: 100vh;
      padding: 12px;
      user-select: none;
    }

    .nav-bar {
      display: flex;
      gap: 8px;
      justify-content: center;
      width: 100%;
      max-width: 440px;
    }

    .tab-btn {
      flex: 1;
      padding: 8px 10px;
      font-size: 13px;
      font-weight: 600;
      color: #475569;
      background: #ffffff;
      border: 2px solid #e2e8f0;
      border-radius: 20px;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 4px;
      transition: all 0.2s ease;
      box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    }

    .tab-btn:hover {
      border-color: #cbd5e1;
      background: #f8fafc;
    }

    .tab-btn.active {
      color: #0284c7;
      border-color: #22b7ff;
      background: #f0f9ff;
      box-shadow: 0 0 10px rgba(34, 183, 255, 0.25);
    }

    .scene-wrap {
      position: relative;
      width: 100%;
      max-width: 420px;
      height: 250px;
      margin: 6px 0;
      display: flex;
      align-items: center;
      justify-content: center;
    }

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

    .part-group {
      cursor: pointer;
      transition: opacity 0.25s ease;
    }

    .hotspot-glow {
      opacity: 0;
      transition: opacity 0.25s ease, stroke 0.25s ease;
    }

    .part-group.active .hotspot-glow {
      opacity: 1;
      filter: drop-shadow(0 0 6px #22b7ff);
    }

    .part-group:not(.active) {
      opacity: 0.85;
    }

    .part-group:hover {
      opacity: 1;
    }

    .pointer-badge {
      font-size: 11px;
      font-weight: 700;
      fill: #ffffff;
      pointer-events: none;
    }

    .badge-bg {
      fill: #1e2945;
      rx: 6px;
      transition: fill 0.25s ease;
    }

    .part-group.active .badge-bg {
      fill: #0284c7;
    }

    .info-card {
      width: 100%;
      max-width: 440px;
      background: #ffffff;
      border: 2px solid #e2e8f0;
      border-radius: 12px;
      padding: 10px 14px;
      text-align: center;
      min-height: 54px;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 2px 6px rgba(0,0,0,0.04);
      transition: border-color 0.25s ease, box-shadow 0.25s ease;
    }

    .info-card.active {
      border-color: #22b7ff;
      box-shadow: 0 0 10px rgba(34, 183, 255, 0.15);
    }

    .info-text {
      font-size: 13.5px;
      font-weight: 500;
      color: #334155;
      line-height: 1.4;
    }

    .info-text strong {
      color: #0284c7;
    }

    @media (min-width: 480px) {
      .tab-btn {
        font-size: 14px;
        padding: 8px 12px;
      }
      .info-text {
        font-size: 14px;
      }
    }
  </style>
</head>
<body>

  
  <div class="nav-bar">
    <button class="tab-btn active" id="btn-branches" onclick="selectPart('branches')">
      🌿 Branches
    </button>
    <button class="tab-btn" id="btn-trunk" onclick="selectPart('trunk')">
      🪵 Trunk
    </button>
    <button class="tab-btn" id="btn-bark" onclick="selectPart('bark')">
      🛡️ Bark
    </button>
  </div>

  
  <div class="scene-wrap">
    <svg viewBox="0 0 400 250">
      <defs>
        
        <linearGradient id="skyGrad" x1="0" y1="0" x2="0" y2="1">
          <stop offset="0%" stop-color="#f0f9ff"/>
          <stop offset="100%" stop-color="#f8fafc"/>
        </linearGradient>
        <linearGradient id="trunkGrad" x1="0" y1="0" x2="1" y2="0">
          <stop offset="0%" stop-color="#8b5a2b"/>
          <stop offset="50%" stop-color="#a06836"/>
          <stop offset="100%" stop-color="#6f431b"/>
        </linearGradient>
        <linearGradient id="barkGrad" x1="0" y1="0" x2="1" y2="0">
          <stop offset="0%" stop-color="#5c3818"/>
          <stop offset="50%" stop-color="#7a4b22"/>
          <stop offset="100%" stop-color="#4a2d13"/>
        </linearGradient>
      </defs>

      
      <ellipse cx="200" cy="235" rx="140" ry="12" fill="#dcfce7" />
      <path d="M60 236 Q 200 226 340 236 Q 200 246 60 236 Z" fill="#86efac" />

      
      <g id="group-trunk" class="part-group" onclick="selectPart('trunk')">
        
        <path class="hotspot-glow" d="M 172 232 C 174 180, 178 135, 185 95 L 215 95 C 222 135, 226 180, 228 232 Z" 
              fill="none" stroke="#22b7ff" stroke-width="8" stroke-linecap="round" />
        
        <path d="M 174 232 C 176 180, 180 135, 187 95 L 213 95 C 220 135, 224 180, 226 232 Z" 
              fill="url(#trunkGrad)" />
        
        <g transform="translate(45, 120)">
          <rect class="badge-bg" x="0" y="0" width="56" height="24" />
          <text class="pointer-badge" x="28" y="16" text-anchor="middle">Trunk</text>
          <line x1="56" y1="12" x2="140" y2="5" stroke="#0284c7" stroke-width="2" stroke-dasharray="3,3" />
          <circle cx="140" cy="5" r="4" fill="#0284c7" />
        </g>
      </g>

      
      <g id="group-bark" class="part-group" onclick="selectPart('bark')">
        
        <path class="hotspot-glow" d="M 172 210 Q 174 185 178 160 L 188 160 Q 183 185 180 210 Z" 
              fill="none" stroke="#22b7ff" stroke-width="6" stroke-linecap="round" />
        
        <path d="M 174 212 C 175 188, 178 168, 180 150 L 194 150 C 190 170, 186 190, 184 212 Z" 
              fill="url(#barkGrad)" stroke="#3e230d" stroke-width="1.5" />
        
        <line x1="178" y1="162" x2="182" y2="198" stroke="#331800" stroke-width="2" stroke-linecap="round" />
        <line x1="184" y1="156" x2="188" y2="188" stroke="#331800" stroke-width="2" stroke-linecap="round" />
        <line x1="181" y1="190" x2="183" y2="208" stroke="#331800" stroke-width="1.5" stroke-linecap="round" />
        
        
        <g transform="translate(270, 180)">
          <rect class="badge-bg" x="0" y="0" width="56" height="24" />
          <text class="pointer-badge" x="28" y="16" text-anchor="middle">Bark</text>
          <line x1="0" y1="12" x2="-80" y2="0" stroke="#0284c7" stroke-width="2" stroke-dasharray="3,3" />
          <circle cx="-80" cy="0" r="4" fill="#0284c7" />
        </g>
      </g>

      
      <g id="group-branches" class="part-group active" onclick="selectPart('branches')">
        
        <path class="hotspot-glow" d="M 188 100 Q 150 75 110 65 M 212 100 Q 250 75 290 65 M 195 80 L 195 40" 
              fill="none" stroke="#22b7ff" stroke-width="8" stroke-linecap="round" />
        
        
        
        <path d="M 188 100 C 160 85, 135 75, 105 65 C 130 80, 155 95, 186 115 Z" fill="#6f431b" />
        
        <path d="M 212 100 C 240 85, 265 75, 295 65 C 270 80, 245 95, 214 115 Z" fill="#6f431b" />
        
        <path d="M 150 82 Q 140 55 125 40 Q 145 55 160 78 Z" fill="#6f431b" />
        
        <path d="M 250 82 Q 260 55 275 40 Q 255 55 240 78 Z" fill="#6f431b" />

        
        
        <circle cx="130" cy="55" r="32" fill="#22c55e" />
        <circle cx="270" cy="55" r="32" fill="#22c55e" />
        <circle cx="200" cy="35" r="34" fill="#22c55e" />
        
        <circle cx="100" cy="70" r="28" fill="#16a34a" />
        <circle cx="160" cy="45" r="32" fill="#15803d" />
        <circle cx="240" cy="45" r="32" fill="#15803d" />
        <circle cx="300" cy="70" r="28" fill="#16a34a" />
        <circle cx="200" cy="65" r="38" fill="#16a34a" />

        
        <circle cx="185" cy="55" r="5" fill="#4ade80" />
        <circle cx="215" cy="50" r="6" fill="#4ade80" />
        <circle cx="145" cy="40" r="4" fill="#86efac" />
        <circle cx="255" cy="40" r="4" fill="#86efac" />

        
        <g transform="translate(285, 20)">
          <rect class="badge-bg" x="0" y="0" width="76" height="24" />
          <text class="pointer-badge" x="38" y="16" text-anchor="middle">Branches</text>
          <line x1="0" y1="12" x2="-45" y2="40" stroke="#0284c7" stroke-width="2" stroke-dasharray="3,3" />
          <circle cx="-45" cy="40" r="4" fill="#0284c7" />
        </g>
      </g>
    </svg>
  </div>

  
  <div class="info-card active" id="info-card">
    <p class="info-text" id="info-text">
      <strong>Branches:</strong> Woody arms that spread outward to hold leaves up to the sunlight.
    </p>
  </div>

  <script>
    const data = {
      branches: {
        title: "Branches",
        text: "Woody arms that spread outward to hold leaves up to the sunlight."
      },
      trunk: {
        title: "Trunk",
        text: "The strong central woody stem that holds the tree tall and carries water."
      },
      bark: {
        title: "Bark",
        text: "The tough outer layer that protects the tree from weather, bugs, and injury."
      }
    };

    function selectPart(key) {
      // Update Buttons
      document.querySelectorAll('.tab-btn').forEach(btn => btn.classList.remove('active'));
      const activeBtn = document.getElementById('btn-' + key);
      if (activeBtn) activeBtn.classList.add('active');

      // Update SVG highlights
      document.querySelectorAll('.part-group').forEach(grp => grp.classList.remove('active'));
      const activeGroup = document.getElementById('group-' + key);
      if (activeGroup) activeGroup.classList.add('active');

      // Update Info Card
      const card = document.getElementById('info-card');
      const textEl = document.getElementById('info-text');
      card.classList.remove('active');
      void card.offsetWidth; // Trigger reflow for smooth feedback
      card.classList.add('active');

      const info = data[key];
      textEl.innerHTML = `<strong>${info.title}:</strong> ${info.text}`;
    }
  </script>
</body>
</html>

Trees as Giant Plants: Trunk, Branches, and Bark

<!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;
      -webkit-tap-highlight-color: transparent;
      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;
      min-height: 100%;
      padding: 12px;
    }

    .diagram-grid {
      display: flex;
      flex-direction: row;
      align-items: center;
      justify-content: center;
      gap: 16px;
      width: 100%;
      max-width: 640px;
    }

    @media (max-width: 520px) {
      .diagram-grid {
        flex-direction: column;
        gap: 12px;
      }
    }

    /* Left: Trunk Section */
    .trunk-view {
      flex: 1 1 50%;
      display: flex;
      flex-direction: column;
      align-items: center;
      position: relative;
      max-width: 290px;
      width: 100%;
    }

    .svg-container {
      width: 100%;
      height: auto;
      max-height: 250px;
    }

    .layer-path {
      cursor: pointer;
      transition: filter 0.25s ease, opacity 0.25s ease;
    }

    .layer-path:hover {
      filter: brightness(1.08);
    }

    .active-bark {
      filter: drop-shadow(0 0 6px #22b7ff);
    }

    /* Right: Protection Cards */
    .shields-view {
      flex: 1 1 50%;
      display: flex;
      flex-direction: column;
      gap: 8px;
      width: 100%;
      max-width: 290px;
    }

    .shield-card {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 10px 14px;
      background: #f8fafc;
      border: 2px solid transparent;
      border-radius: 12px;
      cursor: pointer;
      transition: all 0.25s ease;
    }

    .shield-card:hover {
      background: #f1f5f9;
    }

    .shield-card.active {
      background: #f0f9ff;
      border-color: #22b7ff;
      box-shadow: 0 4px 12px rgba(34, 183, 255, 0.15);
    }

    .shield-icon {
      font-size: 22px;
      display: flex;
      align-items: center;
      justify-content: center;
      width: 40px;
      height: 40px;
      background: #ffffff;
      border-radius: 10px;
      box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06);
      flex-shrink: 0;
    }

    .shield-text {
      font-size: 14px;
      font-weight: 700;
      color: #1e2945;
      line-height: 1.2;
    }

    /* Labels under log */
    .legend-row {
      display: flex;
      justify-content: center;
      gap: 8px;
      margin-top: 6px;
      flex-wrap: wrap;
    }

    .tag {
      display: inline-flex;
      align-items: center;
      gap: 4px;
      font-size: 12px;
      font-weight: 600;
      color: #475569;
      cursor: pointer;
      padding: 3px 8px;
      border-radius: 6px;
      background: #f1f5f9;
      transition: all 0.2s;
    }

    .tag.active {
      background: #e0f2fe;
      color: #0369a1;
      font-weight: 700;
    }

    .dot-bark { width: 8px; height: 8px; border-radius: 50%; background: #6b432a; }
    .dot-live { width: 8px; height: 8px; border-radius: 50%; background: #84cc16; }
    .dot-wood { width: 8px; height: 8px; border-radius: 50%; background: #eab308; }
  </style>
</head>
<body>

  <div class="diagram-grid">
    
    <div class="trunk-view">
      <svg class="svg-container" viewBox="0 0 280 230" xmlns="http://www.w3.org/2000/svg">
        <defs>
          <linearGradient id="barkCylinder" x1="0" y1="0" x2="1" y2="0">
            <stop offset="0%" stop-color="#4a2e1b"/>
            <stop offset="50%" stop-color="#784e31"/>
            <stop offset="100%" stop-color="#3d2414"/>
          </linearGradient>
          <linearGradient id="woodCylinder" x1="0" y1="0" x2="1" y2="0">
            <stop offset="0%" stop-color="#ca8a04"/>
            <stop offset="50%" stop-color="#fef08a"/>
            <stop offset="100%" stop-color="#a16207"/>
          </linearGradient>
        </defs>

        
        <path d="M 30,85 C 30,125 250,125 250,85 L 250,165 C 250,205 30,205 30,165 Z" fill="url(#barkCylinder)"/>
        
        
        
        <g id="layerBark" class="layer-path active-bark">
          <ellipse cx="140" cy="85" rx="110" ry="46" fill="#60381f" stroke="#3d2414" stroke-width="4"/>
          <ellipse cx="140" cy="85" rx="103" ry="42" fill="#784e31"/>
        </g>

        
        <g id="layerLive" class="layer-path">
          <ellipse cx="140" cy="85" rx="93" ry="38" fill="#84cc16" stroke="#65a30d" stroke-width="2"/>
        </g>

        
        <g id="layerWood" class="layer-path">
          <ellipse cx="140" cy="85" rx="85" ry="34" fill="#fde047"/>
          
          <ellipse cx="140" cy="85" rx="66" ry="26" fill="none" stroke="#eab308" stroke-width="2"/>
          <ellipse cx="140" cy="85" rx="46" ry="18" fill="none" stroke="#ca8a04" stroke-width="2"/>
          <ellipse cx="140" cy="85" rx="24" ry="10" fill="#a16207"/>
          <circle cx="140" cy="85" r="4" fill="#713f12"/>
        </g>

        
        <ellipse id="shieldPulse" cx="140" cy="85" rx="114" ry="49" fill="none" stroke="#22b7ff" stroke-width="3" stroke-dasharray="6,4" opacity="0.9"/>
      </svg>

      <div class="legend-row">
        <span class="tag active" id="tagBark"><span class="dot-bark"></span>Outer Bark</span>
        <span class="tag" id="tagLive"><span class="dot-live"></span>Living Layer</span>
        <span class="tag" id="tagWood"><span class="dot-wood"></span>Wood Core</span>
      </div>
    </div>

    
    <div class="shields-view">
      <div class="shield-card active" id="cardPests" data-target="bark">
        <div class="shield-icon">🛡️🐛</div>
        <div class="shield-text">Blocks<br>Pests</div>
      </div>

      <div class="shield-card" id="cardMoisture" data-target="bark">
        <div class="shield-icon">🛡️💧</div>
        <div class="shield-text">Traps<br>Moisture</div>
      </div>

      <div class="shield-card" id="cardWeather" data-target="bark">
        <div class="shield-icon">🛡️❄️</div>
        <div class="shield-text">Shields<br>Weather</div>
      </div>
    </div>
  </div>

  <script>
    const cards = document.querySelectorAll('.shield-card');
    const tags = {
      bark: document.getElementById('tagBark'),
      live: document.getElementById('tagLive'),
      wood: document.getElementById('tagWood')
    };
    const layers = {
      bark: document.getElementById('layerBark'),
      live: document.getElementById('layerLive'),
      wood: document.getElementById('layerWood')
    };
    const pulse = document.getElementById('shieldPulse');

    let autoCycle = 0;
    let timer = setInterval(cycleShields, 3200);

    function highlightLayer(name) {
      Object.keys(tags).forEach(k => {
        tags[k].classList.toggle('active', k === name);
        layers[k].style.opacity = (k === name || name === 'all') ? '1' : '0.45';
      });
      pulse.style.display = (name === 'bark' || name === 'all') ? 'block' : 'none';
    }

    function selectCard(index) {
      cards.forEach((c, idx) => c.classList.toggle('active', idx === index));
      highlightLayer('bark');
      autoCycle = index;
    }

    function cycleShields() {
      autoCycle = (autoCycle + 1) % cards.length;
      selectCard(autoCycle);
    }

    cards.forEach((card, idx) => {
      card.addEventListener('click', () => {
        clearInterval(timer);
        selectCard(idx);
      });
    });

    Object.keys(tags).forEach(key => {
      tags[key].addEventListener('click', () => {
        clearInterval(timer);
        highlightLayer(key);
        if (key !== 'bark') {
          cards.forEach(c => c.classList.remove('active'));
        } else {
          selectCard(0);
        }
      });
    });

    Object.keys(layers).forEach(key => {
      layers[key].addEventListener('click', () => {
        clearInterval(timer);
        highlightLayer(key);
        if (key === 'bark') selectCard(0);
        else cards.forEach(c => c.classList.remove('active'));
      });
    });
  </script>
</body>
</html>

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <style>
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-tap-highlight-color: transparent;
      user-select: none;
    }

    body {
      font-family: system-ui, -apple-system, sans-serif;
      color: #1e2945;
      background: transparent;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: flex-start;
      padding: 10px 8px;
      gap: 12px;
    }

    .comparison-grid {
      display: flex;
      width: 100%;
      max-width: 520px;
      gap: 10px;
      justify-content: center;
    }

    .plant-card {
      flex: 1;
      background: #ffffff;
      border: 1px solid #e6e6e6;
      border-radius: 12px;
      padding: 12px 10px;
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      position: relative;
    }

    .plant-card.soft {
      border-top: 4px solid #22c55e;
    }

    .plant-card.woody {
      border-top: 4px solid #854d0e;
    }

    .card-title {
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 6px;
    }

    .stage {
      width: 100%;
      position: relative;
      display: flex;
      align-items: flex-end;
      justify-content: center;
      height: 125px;
      overflow: visible;
    }

    .ground {
      position: absolute;
      bottom: 0;
      left: 10%;
      right: 10%;
      height: 4px;
      background: #cbd5e1;
      border-radius: 2px;
    }

    /* Dandelion / Soft Stem */
    .dandelion-wrap {
      position: relative;
      bottom: 4px;
      transform-origin: bottom center;
      transition: transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
      display: flex;
      flex-direction: column;
      align-items: center;
    }

    .flower-head {
      font-size: 26px;
      line-height: 1;
      filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
    }

    .soft-stem {
      width: 5px;
      height: 70px;
      background: linear-gradient(to right, #4ade80, #22c55e);
      border-radius: 3px;
    }

    .leaf-base {
      position: absolute;
      bottom: -2px;
      font-size: 16px;
      line-height: 1;
    }

    /* Oak Tree / Woody Trunk */
    .tree-wrap {
      position: relative;
      bottom: 4px;
      transform-origin: bottom center;
      transition: transform 0.6s ease;
      display: flex;
      flex-direction: column;
      align-items: center;
    }

    .tree-crown {
      font-size: 46px;
      line-height: 1;
      margin-bottom: -8px;
      z-index: 2;
      transition: transform 0.4s ease;
    }

    .woody-trunk {
      width: 20px;
      height: 52px;
      background: repeating-linear-gradient(
        90deg,
        #78350f,
        #78350f 4px,
        #854d0e 4px,
        #854d0e 8px,
        #9a3412 8px,
        #9a3412 10px
      );
      border-radius: 3px 3px 5px 5px;
      z-index: 1;
    }

    /* Wind Active States */
    .wind-active .dandelion-wrap {
      transform: rotate(34deg);
    }

    .wind-active .tree-wrap {
      transform: rotate(0deg);
    }

    .wind-active .tree-crown {
      transform: rotate(4deg) translateX(3px);
    }

    /* Labels */
    .label-box {
      margin-top: 8px;
      font-size: 13px;
      font-weight: 600;
      line-height: 1.3;
    }

    .soft-tag {
      color: #15803d;
    }

    .woody-tag {
      color: #854d0e;
    }

    .state-indicator {
      display: inline-block;
      margin-top: 4px;
      font-size: 12px;
      font-weight: 700;
      padding: 3px 8px;
      border-radius: 12px;
      background: #f1f5f9;
      transition: all 0.3s ease;
    }

    .soft-state {
      color: #15803d;
      background: #ecfdf5;
    }

    .woody-state {
      color: #854d0e;
      background: #fefce8;
    }

    .wind-active .soft-state {
      background: #dcfce7;
      color: #166534;
    }

    .wind-active .woody-state {
      background: #fef3c7;
      color: #92400e;
    }

    /* Control Button */
    .toggle-btn {
      background: #ffffff;
      border: 2px solid #0284c7;
      color: #0284c7;
      padding: 7px 18px;
      border-radius: 20px;
      font-size: 13px;
      font-weight: 700;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
      box-shadow: 0 2px 5px rgba(2, 132, 199, 0.15);
      transition: background-color 0.2s, color 0.2s;
    }

    .toggle-btn:active,
    .toggle-btn.active {
      background: #0284c7;
      color: #ffffff;
    }

    /* Responsive Adaptation for Mobile (< 500px) */
    @media (max-width: 499px) {
      .comparison-grid {
        flex-direction: column;
        max-width: 340px;
        gap: 8px;
      }

      .plant-card {
        display: grid;
        grid-template-columns: 80px 1fr;
        grid-template-rows: auto auto;
        padding: 8px 12px;
        text-align: left;
        align-items: center;
        column-gap: 12px;
      }

      .plant-card.soft {
        border-top: 1px solid #e6e6e6;
        border-left: 4px solid #22c55e;
      }

      .plant-card.woody {
        border-top: 1px solid #e6e6e6;
        border-left: 4px solid #854d0e;
      }

      .card-title {
        grid-column: 2;
        grid-row: 1;
        margin-bottom: 2px;
      }

      .stage {
        grid-column: 1;
        grid-row: 1 / span 2;
        height: 95px;
      }

      .ground {
        left: 0;
        right: 0;
      }

      .soft-stem {
        height: 52px;
      }

      .flower-head {
        font-size: 22px;
      }

      .woody-trunk {
        height: 40px;
        width: 16px;
      }

      .tree-crown {
        font-size: 38px;
        margin-bottom: -6px;
      }

      .label-box {
        grid-column: 2;
        grid-row: 2;
        margin-top: 2px;
      }
    }
  </style>
</head>
<body>

  <div class="comparison-grid" id="grid">
    
    <div class="plant-card soft">
      <div class="card-title">Soft Plant</div>
      <div class="stage">
        <div class="ground"></div>
        <div class="dandelion-wrap">
          <div class="flower-head">🌼</div>
          <div class="soft-stem"></div>
          <div class="leaf-base">🌿</div>
        </div>
      </div>
      <div class="label-box soft-tag">
        Soft Green Stem<br>
        <span class="state-indicator soft-state" id="softStatus">Non-woody</span>
      </div>
    </div>

    
    <div class="plant-card woody">
      <div class="card-title">Giant Tree</div>
      <div class="stage">
        <div class="ground"></div>
        <div class="tree-wrap">
          <div class="tree-crown">🌳</div>
          <div class="woody-trunk"></div>
        </div>
      </div>
      <div class="label-box woody-tag">
        Hard Woody Stem<br>
        <span class="state-indicator woody-state" id="woodyStatus">Woody Plant</span>
      </div>
    </div>
  </div>

  <button class="toggle-btn" id="windBtn" type="button" aria-label="Toggle wind animation">
    <span>🌬️</span> <span id="btnText">Test Wind</span>
  </button>

  <script>
    const grid = document.getElementById('grid');
    const btn = document.getElementById('windBtn');
    const btnText = document.getElementById('btnText');
    const softStatus = document.getElementById('softStatus');
    const woodyStatus = document.getElementById('woodyStatus');

    let isBlowing = false;

    function setWind(active) {
      isBlowing = active;
      if (isBlowing) {
        grid.classList.add('wind-active');
        btn.classList.add('active');
        btnText.textContent = 'Reset';
        softStatus.textContent = 'Bends Easily';
        woodyStatus.textContent = 'Stays Stiff';
      } else {
        grid.classList.remove('wind-active');
        btn.classList.remove('active');
        btnText.textContent = 'Test Wind';
        softStatus.textContent = 'Non-woody';
        woodyStatus.textContent = 'Woody Plant';
      }
    }

    btn.addEventListener('click', () => {
      setWind(!isBlowing);
    });

    grid.addEventListener('click', () => {
      setWind(!isBlowing);
    });
  </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">
  <title>Parts of a Flowering Plant</title>
  <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-color: #f8fafc;
      color: #1e2945;
      display: flex;
      flex-direction: column;
      align-items: center;
      padding: 10px;
      min-height: 100vh;
    }
    .main-container {
      width: 100%;
      max-width: 440px;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    
    /* Nav Buttons */
    .tab-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 6px;
      width: 100%;
    }
    .tab-btn {
      background: #ffffff;
      border: 1.5px solid #cbd5e1;
      border-radius: 8px;
      padding: 7px 4px;
      font-size: 12px;
      font-weight: 600;
      color: #334155;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 4px;
      transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
    }
    .tab-btn:hover {
      background: #f1f5f9;
      border-color: #94a3b8;
      color: #0f172a;
    }
    .tab-btn.active {
      background: #eff6ff;
      border-color: #2563eb;
      color: #1d4ed8;
      box-shadow: 0 1px 3px rgba(37, 99, 235, 0.15);
    }

    /* Diagram Area */
    .svg-wrapper {
      position: relative;
      width: 100%;
      background: #ffffff;
      border-radius: 12px;
      border: 1.5px solid #e2e8f0;
      overflow: hidden;
      box-shadow: 0 1px 4px rgba(0,0,0,0.04);
    }
    svg {
      display: block;
      width: 100%;
      height: auto;
    }
    
    /* Interactive SVG Plant Parts */
    .plant-part {
      cursor: pointer;
      transition: opacity 0.25s ease, filter 0.25s ease;
    }
    .plant-part:hover {
      filter: drop-shadow(0 0 4px rgba(37, 99, 235, 0.45));
    }
    .plant-part.dimmed {
      opacity: 0.45;
    }
    .plant-part.highlighted {
      opacity: 1;
      filter: drop-shadow(0 0 6px rgba(37, 99, 235, 0.75));
    }

    /* Callout Badges inside SVG */
    .callout {
      cursor: pointer;
      transition: opacity 0.2s ease;
    }
    .callout rect {
      fill: #ffffff;
      stroke: #cbd5e1;
      stroke-width: 1.5;
      rx: 12;
      ry: 12;
      transition: fill 0.2s ease, stroke 0.2s ease;
    }
    .callout text {
      font-size: 11px;
      font-weight: 700;
      fill: #334155;
      user-select: none;
      transition: fill 0.2s ease;
    }
    .callout:hover rect {
      stroke: #64748b;
      fill: #f8fafc;
    }
    .callout.active rect {
      fill: #1e2945;
      stroke: #1e2945;
    }
    .callout.active text {
      fill: #ffffff;
    }
    
    /* Function Info Card */
    .info-card {
      background: #ffffff;
      border: 1.5px solid #e2e8f0;
      border-radius: 10px;
      padding: 10px 14px;
      display: flex;
      flex-direction: column;
      gap: 6px;
      min-height: 84px;
      box-shadow: 0 1px 3px rgba(0,0,0,0.03);
    }
    .info-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 8px;
    }
    .info-title {
      font-size: 15px;
      font-weight: 700;
      color: #1e2945;
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .info-role-badge {
      font-size: 11px;
      font-weight: 700;
      padding: 3px 8px;
      border-radius: 999px;
      background: #dbeafe;
      color: #1e40af;
    }
    .info-desc {
      font-size: 13px;
      line-height: 1.4;
      color: #475569;
    }
  </style>
</head>
<body>
  <div class="main-container">
    
    <div class="tab-bar">
      <button class="tab-btn active" onclick="selectPart('flower')">🌸 Flower</button>
      <button class="tab-btn" onclick="selectPart('leaf')">🍃 Leaves</button>
      <button class="tab-btn" onclick="selectPart('stem')">🎋 Stem</button>
      <button class="tab-btn" onclick="selectPart('roots')">🌱 Roots</button>
    </div>

    
    <div class="svg-wrapper">
      <svg viewBox="0 0 380 280" xmlns="http://www.w3.org/2000/svg">
        <defs>
          <linearGradient id="skyGrad" x1="0%" y1="0%" x2="0%" y2="100%">
            <stop offset="0%" stop-color="#f0f9ff"/>
            <stop offset="100%" stop-color="#e0f2fe"/>
          </linearGradient>
          <linearGradient id="soilGrad" x1="0%" y1="0%" x2="0%" y2="100%">
            <stop offset="0%" stop-color="#8c5e3c"/>
            <stop offset="100%" stop-color="#674125"/>
          </linearGradient>
          <linearGradient id="stemGrad" x1="0%" y1="0%" x2="100%" y2="0%">
            <stop offset="0%" stop-color="#4d7c0f"/>
            <stop offset="40%" stop-color="#65a30d"/>
            <stop offset="70%" stop-color="#84cc16"/>
            <stop offset="100%" stop-color="#4d7c0f"/>
          </linearGradient>
        </defs>

        
        <rect x="0" y="0" width="380" height="200" fill="url(#skyGrad)"/>
        <rect x="0" y="200" width="380" height="80" fill="url(#soilGrad)"/>
        
        
        <line x1="0" y1="200" x2="380" y2="200" stroke="#452712" stroke-width="2.5" stroke-dasharray="5 3"/>
        <text x="372" y="193" text-anchor="end" font-size="9" fill="#475569" font-weight="700">Soil Line</text>
        <circle cx="70" cy="235" r="2.5" fill="#452712" opacity="0.6"/>
        <circle cx="110" cy="260" r="3.5" fill="#3a1e0b" opacity="0.5"/>
        <circle cx="280" cy="225" r="3" fill="#452712" opacity="0.6"/>
        <circle cx="310" cy="255" r="2.5" fill="#3a1e0b" opacity="0.5"/>
        <circle cx="245" cy="270" r="3.5" fill="#3a1e0b" opacity="0.4"/>

        
        <g id="grp-roots" class="plant-part dimmed" onclick="selectPart('roots')">
          
          <path d="M 183 198 Q 190 205 197 198 Z" fill="#84cc16" stroke="#4d7c0f" stroke-width="1"/>
          
          <path d="M 190 200 Q 192 235 190 270" stroke="#fef08a" stroke-width="5" stroke-linecap="round" fill="none"/>
          
          <path d="M 190 210 Q 155 225 125 240 M 140 230 Q 130 245 115 250" stroke="#fde047" stroke-width="3" stroke-linecap="round" fill="none"/>
          <path d="M 190 215 Q 225 230 255 245 M 230 236 Q 248 250 262 258" stroke="#fde047" stroke-width="3" stroke-linecap="round" fill="none"/>
          <path d="M 190 235 Q 165 250 145 268" stroke="#fef08a" stroke-width="2.5" stroke-linecap="round" fill="none"/>
          <path d="M 190 240 Q 215 255 235 272" stroke="#fef08a" stroke-width="2.5" stroke-linecap="round" fill="none"/>
          <path d="M 190 255 Q 180 268 175 276" stroke="#fde047" stroke-width="2" stroke-linecap="round" fill="none"/>
          <path d="M 190 258 Q 202 268 208 276" stroke="#fde047" stroke-width="2" stroke-linecap="round" fill="none"/>
        </g>

        
        <g id="grp-stem" class="plant-part dimmed" onclick="selectPart('stem')">
          
          <path d="M 185 202 L 185 58 Q 190 54 195 58 L 195 202 Z" fill="url(#stemGrad)" stroke="#365314" stroke-width="1.5" stroke-linejoin="round"/>
          
          
          <path d="M 185 142 Q 178 144 172 145" stroke="#4d7c0f" stroke-width="3" stroke-linecap="round" fill="none"/>
          <path d="M 195 110 Q 202 112 208 114" stroke="#4d7c0f" stroke-width="3" stroke-linecap="round" fill="none"/>

          
          <line x1="185" y1="142" x2="195" y2="142" stroke="#274008" stroke-width="1.8"/>
          <line x1="185" y1="110" x2="195" y2="110" stroke="#274008" stroke-width="1.8"/>
          <line x1="185" y1="172" x2="195" y2="172" stroke="#274008" stroke-width="1.5"/>

          
          <line x1="189" y1="62" x2="189" y2="198" stroke="#a3e635" stroke-width="1.5" opacity="0.6"/>
        </g>

        
        <g id="grp-leaf" class="plant-part dimmed" onclick="selectPart('leaf')">
          
          <g>
            <path d="M 186 142 Q 140 132 105 155 Q 140 178 186 142 Z" fill="#65a30d" stroke="#365314" stroke-width="1.5"/>
            
            <path d="M 186 142 Q 142 144 105 155" stroke="#bef264" stroke-width="1.8" fill="none"/>
            <path d="M 160 142 Q 150 136 142 134 M 145 145 Q 135 138 126 138" stroke="#bef264" stroke-width="1.2" fill="none"/>
            <path d="M 160 142 Q 152 152 144 158 M 140 146 Q 130 156 122 161" stroke="#bef264" stroke-width="1.2" fill="none"/>
          </g>
          
          <g>
            <path d="M 194 110 Q 240 98 275 120 Q 240 144 194 110 Z" fill="#65a30d" stroke="#365314" stroke-width="1.5"/>
            
            <path d="M 194 110 Q 238 110 275 120" stroke="#bef264" stroke-width="1.8" fill="none"/>
            <path d="M 220 110 Q 230 102 238 100 M 240 112 Q 250 104 256 104" stroke="#bef264" stroke-width="1.2" fill="none"/>
            <path d="M 220 110 Q 228 120 236 126 M 240 114 Q 250 122 258 126" stroke="#bef264" stroke-width="1.2" fill="none"/>
          </g>
        </g>

        
        <g id="grp-flower" class="plant-part highlighted" onclick="selectPart('flower')">
          
          <g fill="#facc15" stroke="#ca8a04" stroke-width="1.4">
            
            <ellipse cx="190" cy="24" rx="7.5" ry="16"/>
            <ellipse cx="190" cy="80" rx="7.5" ry="16"/>
            <ellipse cx="162" cy="52" rx="16" ry="7.5"/>
            <ellipse cx="218" cy="52" rx="16" ry="7.5"/>
            <ellipse cx="170" cy="32" rx="7.5" ry="16" transform="rotate(-45 170 32)"/>
            <ellipse cx="210" cy="72" rx="7.5" ry="16" transform="rotate(-45 210 72)"/>
            <ellipse cx="210" cy="32" rx="7.5" ry="16" transform="rotate(45 210 32)"/>
            <ellipse cx="170" cy="72" rx="7.5" ry="16" transform="rotate(45 170 72)"/>
          </g>
          
          <circle cx="190" cy="52" r="16" fill="#854d0e" stroke="#58310c" stroke-width="2"/>
          <circle cx="190" cy="52" r="11" fill="#a16207" stroke="#713f12" stroke-width="1" stroke-dasharray="2 2"/>
        </g>

        
        
        <g id="callout-flower" class="callout active" onclick="selectPart('flower')">
          <line x1="222" y1="38" x2="258" y2="28" stroke="#475569" stroke-width="1.5" stroke-dasharray="3 2"/>
          <circle cx="222" cy="38" r="2.5" fill="#2563eb"/>
          <rect x="256" y="16" width="94" height="24"/>
          <text x="303" y="32" text-anchor="middle">🌸 1. Flower</text>
        </g>

        
        <g id="callout-leaf" class="callout" onclick="selectPart('leaf')">
          <line x1="120" y1="150" x2="88" y2="135" stroke="#475569" stroke-width="1.5" stroke-dasharray="3 2"/>
          <circle cx="120" cy="150" r="2.5" fill="#2563eb"/>
          <rect x="16" y="123" width="90" height="24"/>
          <text x="61" y="139" text-anchor="middle">🍃 2. Leaves</text>
        </g>

        
        <g id="callout-stem" class="callout" onclick="selectPart('stem')">
          <line x1="195" y1="165" x2="252" y2="165" stroke="#475569" stroke-width="1.5" stroke-dasharray="3 2"/>
          <circle cx="195" cy="165" r="2.5" fill="#2563eb"/>
          <rect x="250" y="153" width="82" height="24"/>
          <text x="291" y="169" text-anchor="middle">🎋 3. Stem</text>
        </g>

        
        <g id="callout-roots" class="callout" onclick="selectPart('roots')">
          <line x1="138" y1="240" x2="94" y2="245" stroke="#475569" stroke-width="1.5" stroke-dasharray="3 2"/>
          <circle cx="138" cy="240" r="2.5" fill="#2563eb"/>
          <rect x="18" y="233" width="84" height="24"/>
          <text x="60" y="249" text-anchor="middle">🌱 4. Roots</text>
        </g>
      </svg>
    </div>

    
    <div class="info-card" id="infoCard">
      <div class="info-header">
        <div class="info-title" id="partTitle">🌸 Flower</div>
        <span class="info-role-badge" id="partRole">Makes Seeds</span>
      </div>
      <div class="info-desc" id="partDesc">
        • Bright petals attract bees and pollinators.<br>
        • Produces nectar and seeds to make new plants.
      </div>
    </div>
  </div>

  <script>
    const data = {
      flower: {
        title: '🌸 Flower',
        role: 'Makes Seeds',
        desc: '• Bright petals attract bees and pollinators.<br>• Produces nectar and seeds to make new plants.'
      },
      leaf: {
        title: '🍃 Leaves',
        role: 'Makes Food',
        desc: '• Catches sunlight with green chlorophyll.<br>• Uses air, water, and sunlight to create food (photosynthesis).'
      },
      stem: {
        title: '🎋 Stem',
        role: 'Support & Transport',
        desc: '• Carries water and nutrients up from the roots to leaves.<br>• Holds the leaves and flowers tall towards the sunlight.'
      },
      roots: {
        title: '🌱 Roots',
        role: 'Absorb & Anchor',
        desc: '• Soaks up moisture and minerals from the soil.<br>• Firmly anchors the plant into the ground.'
      }
    };

    const parts = ['flower', 'leaf', 'stem', 'roots'];

    function selectPart(id) {
      // Update data card
      const info = data[id];
      document.getElementById('partTitle').innerHTML = info.title;
      document.getElementById('partRole').innerText = info.role;
      document.getElementById('partDesc').innerHTML = info.desc;

      // Update Nav Buttons
      document.querySelectorAll('.tab-btn').forEach((btn, idx) => {
        btn.classList.toggle('active', parts[idx] === id);
      });

      // Update SVG Plant Part highlights
      parts.forEach(p => {
        const grp = document.getElementById(`grp-${p}`);
        const callout = document.getElementById(`callout-${p}`);
        
        if (p === id) {
          grp.classList.add('highlighted');
          grp.classList.remove('dimmed');
          callout.classList.add('active');
        } else {
          grp.classList.remove('highlighted');
          grp.classList.add('dimmed');
          callout.classList.remove('active');
        }
      });
    }
  </script>
</body>
</html>

science.ks1.y1.t1.s2

Aligned learning resources

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