<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta name="aspect-ratio" content="1:1">
  <style>
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      width: 100%;
      height: 100%;
      background: #ffffff;
      font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
      color: #1e2945;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: space-between;
      user-select: none;
      padding: 8px 6px;
    }

    /* Controls Bar */
    .controls {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      justify-content: center;
      width: 100%;
      max-width: 440px;
      z-index: 10;
    }

    .btn {
      appearance: none;
      border: 1px solid #e2e8f0;
      background: #f8fafc;
      color: #475569;
      padding: 5px 10px;
      border-radius: 6px;
      font-size: 12px;
      font-weight: 600;
      cursor: pointer;
      transition: background 0.2s, color 0.2s, box-shadow 0.2s;
    }

    .btn:hover {
      background: #edf2f7;
    }

    .btn.active {
      background: #0284c7;
      color: #ffffff;
      border-color: #0284c7;
      box-shadow: 0 2px 6px rgba(2, 132, 199, 0.25);
    }

    /* Main Diagram Container */
    .diagram-stage {
      position: relative;
      width: 100%;
      max-width: 440px;
      flex: 1;
      min-height: 330px;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    svg {
      width: 100%;
      height: 100%;
      max-height: 410px;
      overflow: visible;
    }

    /* Region Dimming on Filter */
    .junction-group {
      transition: opacity 0.3s ease;
    }
    .dimmed {
      opacity: 0.18;
    }

    /* Particle Animations */
    @keyframes ionMove {
      0% { transform: translateX(0); opacity: 0; }
      20% { opacity: 1; }
      80% { opacity: 1; }
      100% { transform: translateX(86px); opacity: 0; }
    }

    @keyframes fluidBlock {
      0% { transform: translateY(0); opacity: 0.9; }
      70% { transform: translateY(28px); opacity: 0.9; }
      90% { transform: translateY(28px); opacity: 0; }
      100% { transform: translateY(0); opacity: 0; }
    }

    .ion-flow-1 { animation: ionMove 2.6s linear infinite; }
    .ion-flow-2 { animation: ionMove 2.6s linear infinite 0.9s; }
    .ion-flow-3 { animation: ionMove 2.6s linear infinite 1.8s; }

    .fluid-drop-1 { animation: fluidBlock 2.4s ease-in-out infinite; }
    .fluid-drop-2 { animation: fluidBlock 2.4s ease-in-out infinite 0.8s; }
    .fluid-drop-3 { animation: fluidBlock 2.4s ease-in-out infinite 1.6s; }
  </style>
</head>
<body>

  
  <div class="controls">
    <button class="btn active" onclick="showJunction('all')">All Junctions</button>
    <button class="btn" onclick="showJunction('tight')">Tight</button>
    <button class="btn" onclick="showJunction('desmo')">Desmosome</button>
    <button class="btn" onclick="showJunction('gap')">Gap</button>
  </div>

  
  <div class="diagram-stage">
    <svg viewBox="0 0 400 400" preserveAspectRatio="xMidYMid meet">
      <defs>
        
        <linearGradient id="cell1Grad" x1="0" y1="0" x2="1" y2="0">
          <stop offset="0%" stop-color="#f0fdf4"/>
          <stop offset="100%" stop-color="#dcfce7"/>
        </linearGradient>
        <linearGradient id="cell2Grad" x1="0" y1="0" x2="1" y2="0">
          <stop offset="0%" stop-color="#dcfce7"/>
          <stop offset="100%" stop-color="#f0fdf4"/>
        </linearGradient>

        
        <linearGradient id="bilayerGrad" x1="0" y1="0" x2="1" y2="0">
          <stop offset="0%" stop-color="#94a3b8"/>
          <stop offset="100%" stop-color="#64748b"/>
        </linearGradient>

        
        <linearGradient id="plaqueGrad" x1="0" y1="0" x2="1" y2="0">
          <stop offset="0%" stop-color="#f97316"/>
          <stop offset="100%" stop-color="#ea580c"/>
        </linearGradient>
      </defs>

      
      <rect x="15" y="32" width="130" height="336" fill="url(#cell1Grad)" rx="6"/>
      
      <rect x="255" y="32" width="130" height="336" fill="url(#cell2Grad)" rx="6"/>

      
      <rect x="157" y="32" width="86" height="336" fill="#f8fafc" opacity="0.6"/>

      
      <rect x="145" y="32" width="12" height="336" fill="url(#bilayerGrad)" rx="2"/>
      
      <rect x="243" y="32" width="12" height="336" fill="url(#bilayerGrad)" rx="2"/>

      
      <text x="200" y="22" text-anchor="middle" font-size="12" font-weight="700" fill="#0284c7">▲ Apical (Lumen)</text>
      <line x1="60" y1="28" x2="340" y2="28" stroke="#cbd5e1" stroke-dasharray="3 3"/>

      <text x="200" y="388" text-anchor="middle" font-size="12" font-weight="700" fill="#64748b">▼ Basal Lamina</text>
      <line x1="60" y1="372" x2="340" y2="372" stroke="#cbd5e1" stroke-dasharray="3 3"/>

      <text x="75" y="52" text-anchor="middle" font-size="11" font-weight="600" fill="#166534">Cell 1</text>
      <text x="325" y="52" text-anchor="middle" font-size="11" font-weight="600" fill="#166534">Cell 2</text>

      
      <g id="group-tight" class="junction-group">
        
        <g stroke="#0284c7" stroke-width="3" stroke-linecap="round">
          
          <line x1="145" y1="80" x2="255" y2="80"/>
          <line x1="145" y1="96" x2="255" y2="96"/>
          <line x1="145" y1="112" x2="255" y2="112"/>
          
          <line x1="150" y1="80" x2="250" y2="96" stroke-width="1.5" stroke-dasharray="2 2"/>
          <line x1="150" y1="96" x2="250" y2="112" stroke-width="1.5" stroke-dasharray="2 2"/>
        </g>
        
        <g fill="#0284c7">
          <circle cx="175" cy="80" r="3.5"/><circle cx="200" cy="80" r="3.5"/><circle cx="225" cy="80" r="3.5"/>
          <circle cx="165" cy="96" r="3.5"/><circle cx="190" cy="96" r="3.5"/><circle cx="215" cy="96" r="3.5"/><circle cx="235" cy="96" r="3.5"/>
          <circle cx="175" cy="112" r="3.5"/><circle cx="200" cy="112" r="3.5"/><circle cx="225" cy="112" r="3.5"/>
        </g>

        
        <g fill="#38bdf8" opacity="0.85">
          <circle class="fluid-drop-1" cx="192" cy="44" r="3"/>
          <circle class="fluid-drop-2" cx="206" cy="40" r="2.5"/>
          <circle class="fluid-drop-3" cx="200" cy="48" r="3"/>
        </g>

        
        <path d="M 194 72 L 206 72" stroke="#dc2626" stroke-width="2" stroke-linecap="round"/>
        <path d="M 196 68 L 204 76" stroke="#dc2626" stroke-width="1.5"/>

        
        <rect x="268" y="84" width="112" height="24" rx="4" fill="#f0f9ff" stroke="#bae6fd"/>
        <text x="324" y="96" text-anchor="middle" font-size="11" font-weight="700" fill="#0369a1">Tight Junction</text>
        <text x="324" y="105" text-anchor="middle" font-size="8.5" font-weight="600" fill="#0284c7">Fluid Barrier</text>
      </g>

      
      <g id="group-desmo" class="junction-group">
        
        <g stroke="#f97316" stroke-width="1.5" fill="none" opacity="0.8">
          <path d="M 40 170 Q 90 185 133 195"/>
          <path d="M 35 195 Q 85 200 133 205"/>
          <path d="M 45 225 Q 95 215 133 212"/>
        </g>

        
        <g stroke="#f97316" stroke-width="1.5" fill="none" opacity="0.8">
          <path d="M 360 170 Q 310 185 267 195"/>
          <path d="M 365 195 Q 315 200 267 205"/>
          <path d="M 355 225 Q 305 215 267 212"/>
        </g>

        
        <rect x="133" y="186" width="10" height="36" rx="2" fill="url(#plaqueGrad)"/>
        <rect x="257" y="186" width="10" height="36" rx="2" fill="url(#plaqueGrad)"/>

        
        <g stroke="#c2410c" stroke-width="2" stroke-linecap="round">
          <line x1="145" y1="192" x2="204" y2="198"/>
          <line x1="255" y1="194" x2="196" y2="198"/>
          <line x1="145" y1="204" x2="204" y2="204"/>
          <line x1="255" y1="204" x2="196" y2="204"/>
          <line x1="145" y1="214" x2="204" y2="210"/>
          <line x1="255" y1="212" x2="196" y2="210"/>
        </g>
        
        <circle cx="200" cy="198" r="3" fill="#ea580c"/>
        <circle cx="200" cy="204" r="3" fill="#ea580c"/>
        <circle cx="200" cy="210" r="3" fill="#ea580c"/>

        
        <rect x="268" y="192" width="112" height="24" rx="4" fill="#fff7ed" stroke="#fed7aa"/>
        <text x="324" y="204" text-anchor="middle" font-size="11" font-weight="700" fill="#c2410c">Desmosome</text>
        <text x="324" y="213" text-anchor="middle" font-size="8.5" font-weight="600" fill="#ea580c">Mechanical Anchor</text>
      </g>

      
      <g id="group-gap" class="junction-group">
        
        
        <g>
          
          <rect x="145" y="284" width="110" height="12" rx="3" fill="#10b981" stroke="#059669" stroke-width="1"/>
          
          <rect x="140" y="287" width="120" height="6" fill="#f0fdf4"/>
          <line x1="145" y1="287" x2="255" y2="287" stroke="#34d399" stroke-dasharray="2 2"/>
          <line x1="145" y1="293" x2="255" y2="293" stroke="#34d399" stroke-dasharray="2 2"/>
        </g>

        
        <g>
          <rect x="145" y="312" width="110" height="12" rx="3" fill="#10b981" stroke="#059669" stroke-width="1"/>
          <rect x="140" y="315" width="120" height="6" fill="#f0fdf4"/>
          <line x1="145" y1="315" x2="255" y2="315" stroke="#34d399" stroke-dasharray="2 2"/>
          <line x1="145" y1="321" x2="255" y2="321" stroke="#34d399" stroke-dasharray="2 2"/>
        </g>

        
        
        <g fill="#059669">
          <circle class="ion-flow-1" cx="154" cy="290" r="2.5"/>
          <circle class="ion-flow-2" cx="154" cy="290" r="2.5"/>
          <circle class="ion-flow-3" cx="154" cy="290" r="2.5"/>
        </g>
        
        <g fill="#0d9488">
          <circle class="ion-flow-2" cx="154" cy="318" r="2.5"/>
          <circle class="ion-flow-3" cx="154" cy="318" r="2.5"/>
          <circle class="ion-flow-1" cx="154" cy="318" r="2.5"/>
        </g>

        
        <rect x="268" y="298" width="112" height="24" rx="4" fill="#ecfdf5" stroke="#a7f3d0"/>
        <text x="324" y="310" text-anchor="middle" font-size="11" font-weight="700" fill="#047857">Gap Junction</text>
        <text x="324" y="319" text-anchor="middle" font-size="8.5" font-weight="600" fill="#059669">Pore Channel</text>
      </g>
    </svg>
  </div>

  <script>
    function showJunction(type) {
      // Update buttons
      const buttons = document.querySelectorAll('.btn');
      buttons.forEach(btn => btn.classList.remove('active'));
      event.target.classList.add('active');

      // Update diagram groups
      const tight = document.getElementById('group-tight');
      const desmo = document.getElementById('group-desmo');
      const gap = document.getElementById('group-gap');

      if (type === 'all') {
        tight.classList.remove('dimmed');
        desmo.classList.remove('dimmed');
        gap.classList.remove('dimmed');
      } else if (type === 'tight') {
        tight.classList.remove('dimmed');
        desmo.classList.add('dimmed');
        gap.classList.add('dimmed');
      } else if (type === 'desmo') {
        tight.classList.add('dimmed');
        desmo.classList.remove('dimmed');
        gap.classList.add('dimmed');
      } else if (type === 'gap') {
        tight.classList.add('dimmed');
        desmo.classList.add('dimmed');
        gap.classList.remove('dimmed');
      }
    }
  </script>
</body>
</html>

Epithelial, Connective, Muscle, and Nervous Tissues

<!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>Connective Tissue Types</title>
  <style>
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      font-family: system-ui, -apple-system, sans-serif;
      background: transparent;
      color: #1e2945;
      padding: 8px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      min-height: 100%;
    }

    .nav-tabs {
      display: flex;
      gap: 8px;
      margin-bottom: 10px;
      width: 100%;
      max-width: 520px;
    }

    .tab-btn {
      flex: 1;
      padding: 8px 12px;
      font-size: 14px;
      font-weight: 600;
      background: #f1f5f9;
      color: #64748b;
      border: 1px solid #cbd5e1;
      border-radius: 8px;
      cursor: pointer;
      text-align: center;
      transition: background 0.2s, color 0.2s, box-shadow 0.2s;
    }

    .tab-btn.active {
      background: #0284c7;
      color: #ffffff;
      border-color: #0284c7;
      box-shadow: 0 2px 6px rgba(2, 132, 199, 0.25);
    }

    .views-container {
      width: 100%;
      max-width: 520px;
      position: relative;
    }

    .view-panel {
      display: none;
      width: 100%;
      gap: 10px;
    }

    .view-panel.active {
      display: flex;
      flex-direction: column;
    }

    .grid-2 {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 8px;
    }

    .grid-3 {
      display: grid;
      grid-template-columns: 1fr 1fr 1fr;
      gap: 6px;
    }

    .tissue-card {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: 8px;
      padding: 8px;
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    }

    .card-title {
      font-size: 13px;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 6px;
      display: flex;
      align-items: center;
      gap: 4px;
    }

    .card-title span {
      font-size: 11px;
      font-weight: 500;
      color: #64748b;
    }

    .svg-box {
      width: 100%;
      height: 140px;
      background: #f8fafc;
      border-radius: 6px;
      border: 1px solid #f1f5f9;
      display: flex;
      align-items: center;
      justify-content: center;
      overflow: hidden;
    }

    .tag-row {
      display: flex;
      flex-wrap: wrap;
      gap: 4px;
      justify-content: center;
      margin-top: 6px;
    }

    .tag {
      font-size: 10.5px;
      font-weight: 600;
      padding: 2px 6px;
      border-radius: 4px;
      background: #e0f2fe;
      color: #0369a1;
      border: 1px solid #bae6fd;
    }

    .tag-alt {
      background: #fef3c7;
      color: #92400e;
      border-color: #fde68a;
    }

    .tag-pink {
      background: #ffe4e6;
      color: #9f1239;
      border-color: #fecdd3;
    }

    @media (max-width: 420px) {
      .grid-3 {
        grid-template-columns: 1fr;
      }
      .svg-box {
        height: 110px;
      }
    }
  </style>
</head>
<body>

  
  <div class="nav-tabs">
    <button class="tab-btn active" onclick="switchTab('proper')">Connective Proper</button>
    <button class="tab-btn" onclick="switchTab('specialized')">Specialized Connective</button>
  </div>

  <div class="views-container">
    
    <div id="panel-proper" class="view-panel active">
      <div class="grid-2">
        
        <div class="tissue-card">
          <div class="card-title">Loose <span>(Areolar)</span></div>
          <div class="svg-box">
            <svg viewBox="0 0 140 140" width="100%" height="100%">
              
              <rect width="140" height="140" fill="#fcf8f2"/>
              
              <path d="M-10,30 Q40,50 80,20 T150,40" stroke="#fca5a5" stroke-width="4" fill="none" stroke-linecap="round"/>
              <path d="M-10,110 Q50,70 100,120 T150,90" stroke="#fca5a5" stroke-width="3" fill="none" stroke-linecap="round"/>
              
              <path d="M20,-10 Q50,60 30,150" stroke="#64748b" stroke-width="1.5" fill="none"/>
              <path d="M120,-10 Q80,70 110,150" stroke="#64748b" stroke-width="1.5" fill="none"/>
              <path d="M-10,80 Q70,90 150,60" stroke="#64748b" stroke-width="1.5" fill="none"/>
              
              <g transform="translate(65, 60)">
                <path d="M-14,-3 Q-4,-4 0,-12 Q3,-4 14,-2 Q4,3 2,12 Q-3,4 -14,-3" fill="#38bdf8"/>
                <ellipse cx="0" cy="0" rx="3" ry="2.5" fill="#0369a1"/>
              </g>
              <g transform="translate(105, 30)">
                <path d="M-10,-2 Q-3,-3 0,-8 Q2,-3 10,-1 Q3,2 1,8 Q-2,3 -10,-2" fill="#38bdf8"/>
                <ellipse cx="0" cy="0" rx="2.5" ry="2" fill="#0369a1"/>
              </g>
              <g transform="translate(30, 110)">
                <path d="M-10,-2 Q-3,-3 0,-8 Q2,-3 10,-1 Q3,2 1,8 Q-2,3 -10,-2" fill="#38bdf8"/>
                <ellipse cx="0" cy="0" rx="2.5" ry="2" fill="#0369a1"/>
              </g>
            </svg>
          </div>
          <div class="tag-row">
            <span class="tag">Sparse fibers</span>
            <span class="tag">Fibroblasts</span>
          </div>
        </div>

        
        <div class="tissue-card">
          <div class="card-title">Dense <span>(Regular)</span></div>
          <div class="svg-box">
            <svg viewBox="0 0 140 140" width="100%" height="100%">
              <rect width="140" height="140" fill="#fff1f2"/>
              
              <path d="M-10,15 Q30,22 70,15 T150,15" stroke="#fb7185" stroke-width="9" fill="none"/>
              <path d="M-10,32 Q30,39 70,32 T150,32" stroke="#f43f5e" stroke-width="8" fill="none"/>
              <path d="M-10,48 Q30,55 70,48 T150,48" stroke="#fb7185" stroke-width="9" fill="none"/>
              <path d="M-10,65 Q30,72 70,65 T150,65" stroke="#f43f5e" stroke-width="8" fill="none"/>
              <path d="M-10,82 Q30,89 70,82 T150,82" stroke="#fb7185" stroke-width="9" fill="none"/>
              <path d="M-10,99 Q30,106 70,99 T150,99" stroke="#f43f5e" stroke-width="8" fill="none"/>
              <path d="M-10,116 Q30,123 70,116 T150,116" stroke="#fb7185" stroke-width="9" fill="none"/>
              <path d="M-10,132 Q30,139 70,132 T150,132" stroke="#f43f5e" stroke-width="8" fill="none"/>
              
              <ellipse cx="45" cy="40" rx="9" ry="2.2" fill="#881337" transform="rotate(3, 45, 40)"/>
              <ellipse cx="105" cy="74" rx="10" ry="2.2" fill="#881337" transform="rotate(-3, 105, 74)"/>
              <ellipse cx="40" cy="107" rx="11" ry="2.2" fill="#881337" transform="rotate(2, 40, 107)"/>
            </svg>
          </div>
          <div class="tag-row">
            <span class="tag-pink">Packed collagen</span>
            <span class="tag-pink">Tendon / Dermis</span>
          </div>
        </div>
      </div>
    </div>

    
    <div id="panel-specialized" class="view-panel">
      <div class="grid-3">
        
        <div class="tissue-card">
          <div class="card-title">Cartilage</div>
          <div class="svg-box">
            <svg viewBox="0 0 120 120" width="100%" height="100%">
              <rect width="120" height="120" fill="#eff6ff"/>
              
              
              <ellipse cx="40" cy="42" rx="18" ry="14" fill="#dbeafe" stroke="#93c5fd" stroke-width="1.5"/>
              <circle cx="36" cy="42" r="7" fill="#60a5fa"/>
              <circle cx="38" cy="41" r="2.5" fill="#1e3a8a"/>
              
              <ellipse cx="85" cy="75" rx="20" ry="16" fill="#dbeafe" stroke="#93c5fd" stroke-width="1.5"/>
              <circle cx="78" cy="75" r="6" fill="#60a5fa"/>
              <circle cx="79" cy="74" r="2" fill="#1e3a8a"/>
              <circle cx="92" cy="75" r="5.5" fill="#60a5fa"/>
              <circle cx="91" cy="74" r="2" fill="#1e3a8a"/>
              
              <ellipse cx="38" cy="95" rx="15" ry="12" fill="#dbeafe" stroke="#93c5fd" stroke-width="1.5"/>
              <circle cx="38" cy="95" r="6" fill="#60a5fa"/>
              <circle cx="39" cy="94" r="2" fill="#1e3a8a"/>
            </svg>
          </div>
          <div class="tag-row">
            <span class="tag">Chondrocytes</span>
            <span class="tag">Lacunae</span>
          </div>
        </div>

        
        <div class="tissue-card">
          <div class="card-title">Bone</div>
          <div class="svg-box">
            <svg viewBox="0 0 120 120" width="100%" height="100%">
              <rect width="120" height="120" fill="#fefce8"/>
              
              <circle cx="60" cy="60" r="52" fill="none" stroke="#fde047" stroke-width="1.5" stroke-dasharray="3 2"/>
              <circle cx="60" cy="60" r="39" fill="none" stroke="#eab308" stroke-width="1.5" stroke-dasharray="4 2"/>
              <circle cx="60" cy="60" r="26" fill="none" stroke="#ca8a04" stroke-width="1.5"/>
              
              <circle cx="60" cy="60" r="13" fill="#713f12"/>
              <circle cx="60" cy="60" r="8" fill="#ef4444"/>
              
              <ellipse cx="60" cy="21" rx="3.5" ry="1.8" fill="#451a03"/>
              <ellipse cx="60" cy="99" rx="3.5" ry="1.8" fill="#451a03"/>
              <ellipse cx="21" cy="60" rx="1.8" ry="3.5" fill="#451a03"/>
              <ellipse cx="99" cy="60" rx="1.8" ry="3.5" fill="#451a03"/>
              <ellipse cx="32" cy="34" rx="3" ry="1.8" fill="#451a03" transform="rotate(45, 32, 34)"/>
              <ellipse cx="88" cy="86" rx="3" ry="1.8" fill="#451a03" transform="rotate(45, 88, 86)"/>
              <ellipse cx="86" cy="35" rx="3" ry="1.8" fill="#451a03" transform="rotate(-45, 86, 35)"/>
              <ellipse cx="35" cy="85" rx="3" ry="1.8" fill="#451a03" transform="rotate(-45, 35, 85)"/>
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          </div>
          <div class="tag-row">
            <span class="tag-alt">Osteons</span>
            <span class="tag-alt">Solid matrix</span>
          </div>
        </div>

        
        <div class="tissue-card">
          <div class="card-title">Blood</div>
          <div class="svg-box">
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          <div class="tag-row">
            <span class="tag-pink">Liquid plasma</span>
            <span class="tag-pink">Blood cells</span>
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        </div>
      </div>
    </div>
  </div>

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<body>

  <div class="tabs">
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    <button class="tab-btn" onclick="setFilter('striations')">Striations</button>
    <button class="tab-btn" onclick="setFilter('nuclei')">Nuclei</button>
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  <div class="panels-grid">
    
    <div class="panel">
      <div class="panel-header">Skeletal Muscle</div>
      <div class="svg-wrap">
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            <ellipse cx="130" cy="127" rx="16" ry="4.5" fill="#4338ca"/>
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        <div class="badge-item trait-form"><span class="tag-icon">📏</span> Cylindrical & unbranched</div>
        <div class="badge-item trait-striations"><span class="tag-icon">▦</span> Striated (striped)</div>
        <div class="badge-item trait-nuclei"><span class="tag-icon">🟣</span> Multiple peripheral nuclei</div>
        <div class="badge-item trait-control"><span class="tag-icon">⚡</span> Voluntary (skeleton)</div>
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    </div>

    
    <div class="panel">
      <div class="panel-header">Cardiac Muscle</div>
      <div class="svg-wrap">
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      <div class="badge-list">
        <div class="badge-item trait-form"><span class="tag-icon">🌿</span> Branched fibers</div>
        <div class="badge-item trait-striations"><span class="tag-icon">▦</span> Striated + Intercalated Discs</div>
        <div class="badge-item trait-nuclei"><span class="tag-icon">🟣</span> 1 single central nucleus</div>
        <div class="badge-item trait-control"><span class="tag-icon">💓</span> Involuntary (heart pump)</div>
      </div>
    </div>

    
    <div class="panel">
      <div class="panel-header">Smooth Muscle</div>
      <div class="svg-wrap">
        <svg viewBox="0 0 200 150" xmlns="http://www.w3.org/2000/svg">
          
          
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          <path d="M 5,110 Q 85,80 165,110 Q 85,140 5,110 Z" fill="#fca5a5" stroke="#e11d48" stroke-width="1.5"/>

          
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      </div>
      <div class="badge-list">
        <div class="badge-item trait-form"><span class="tag-icon">🌾</span> Spindle (fusiform) shape</div>
        <div class="badge-item trait-striations"><span class="tag-icon">▫️</span> Non-striated (smooth)</div>
        <div class="badge-item trait-nuclei"><span class="tag-icon">🟣</span> 1 single central nucleus</div>
        <div class="badge-item trait-control"><span class="tag-icon">🌊</span> Involuntary (vessels & gut)</div>
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</html>

<!DOCTYPE html>
<html lang="en">
<head>
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</head>
<body>

  
  <div class="polarity-card">
    <div class="section-header">
      <span class="section-title">Cell Polarity</span>
      <div class="toggle-group">
        <button class="toggle-btn active" id="btnMicrovilli">Microvilli</button>
        <button class="toggle-btn" id="btnCilia">Cilia</button>
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  <div class="matrix-card">
    <div class="section-title">Classification Matrix</div>
    
    <div class="grid-container">
      
      <div></div>
      <div class="col-label">Squamous</div>
      <div class="col-label">Cuboidal</div>
      <div class="col-label">Columnar</div>

      
      <div class="row-label">Simple</div>

      
      <div class="cell-tile active" data-name="Simple Squamous">
        <div class="cell-preview">
          <svg viewBox="0 0 60 40" width="100%" height="100%">
            <line x1="5" y1="36" x2="55" y2="36" stroke="#94a3b8" stroke-width="2" />
            <ellipse cx="30" cy="30" rx="22" ry="5" fill="#dbeafe" stroke="#3b82f6" stroke-width="1.5" />
            <circle cx="30" cy="30" r="2.5" fill="#1e3a8a" />
          </svg>
        </div>
        <div class="loc-tag">Lung Alveoli</div>
      </div>

      
      <div class="cell-tile" data-name="Simple Cuboidal">
        <div class="cell-preview">
          <svg viewBox="0 0 60 40" width="100%" height="100%">
            <line x1="5" y1="36" x2="55" y2="36" stroke="#94a3b8" stroke-width="2" />
            <rect x="18" y="14" width="24" height="22" fill="#dbeafe" stroke="#3b82f6" stroke-width="1.5" rx="2" />
            <circle cx="30" cy="25" r="4" fill="#1e3a8a" />
          </svg>
        </div>
        <div class="loc-tag">Kidney Tubules</div>
      </div>

      
      <div class="cell-tile" data-name="Simple Columnar">
        <div class="cell-preview">
          <svg viewBox="0 0 60 40" width="100%" height="100%">
            <line x1="5" y1="36" x2="55" y2="36" stroke="#94a3b8" stroke-width="2" />
            <rect x="21" y="4" width="18" height="32" fill="#dbeafe" stroke="#3b82f6" stroke-width="1.5" rx="2" />
            <ellipse cx="30" cy="24" rx="3.5" ry="5" fill="#1e3a8a" />
          </svg>
        </div>
        <div class="loc-tag">Intestine</div>
      </div>

      
      <div class="row-label">Stratified</div>

      
      <div class="cell-tile" data-name="Stratified Squamous">
        <div class="cell-preview">
          <svg viewBox="0 0 60 40" width="100%" height="100%">
            <line x1="5" y1="36" x2="55" y2="36" stroke="#94a3b8" stroke-width="2" />
            
            <rect x="12" y="26" width="12" height="10" fill="#dbeafe" stroke="#3b82f6" stroke-width="1" />
            <rect x="24" y="26" width="12" height="10" fill="#dbeafe" stroke="#3b82f6" stroke-width="1" />
            <rect x="36" y="26" width="12" height="10" fill="#dbeafe" stroke="#3b82f6" stroke-width="1" />
            
            <ellipse cx="20" cy="21" rx="8" ry="4" fill="#dbeafe" stroke="#3b82f6" stroke-width="1" />
            <ellipse cx="40" cy="21" rx="8" ry="4" fill="#dbeafe" stroke="#3b82f6" stroke-width="1" />
            
            <ellipse cx="30" cy="12" rx="18" ry="3" fill="#bfdbfe" stroke="#3b82f6" stroke-width="1" />
          </svg>
        </div>
        <div class="loc-tag">Skin Epidermis</div>
      </div>

      
      <div class="cell-tile" data-name="Stratified Cuboidal">
        <div class="cell-preview">
          <svg viewBox="0 0 60 40" width="100%" height="100%">
            <line x1="5" y1="36" x2="55" y2="36" stroke="#94a3b8" stroke-width="2" />
            
            <rect x="16" y="22" width="14" height="14" fill="#dbeafe" stroke="#3b82f6" stroke-width="1" rx="1" />
            <rect x="30" y="22" width="14" height="14" fill="#dbeafe" stroke="#3b82f6" stroke-width="1" rx="1" />
            
            <rect x="16" y="8" width="14" height="14" fill="#bfdbfe" stroke="#3b82f6" stroke-width="1" rx="1" />
            <rect x="30" y="8" width="14" height="14" fill="#bfdbfe" stroke="#3b82f6" stroke-width="1" rx="1" />
          </svg>
        </div>
        <div class="loc-tag">Sweat Glands</div>
      </div>

      
      <div class="cell-tile" data-name="Stratified Columnar">
        <div class="cell-preview">
          <svg viewBox="0 0 60 40" width="100%" height="100%">
            <line x1="5" y1="36" x2="55" y2="36" stroke="#94a3b8" stroke-width="2" />
            
            <rect x="18" y="26" width="12" height="10" fill="#dbeafe" stroke="#3b82f6" stroke-width="1" />
            <rect x="30" y="26" width="12" height="10" fill="#dbeafe" stroke="#3b82f6" stroke-width="1" />
            
            <rect x="18" y="4" width="12" height="22" fill="#bfdbfe" stroke="#3b82f6" stroke-width="1" rx="1" />
            <rect x="30" y="4" width="12" height="22" fill="#bfdbfe" stroke="#3b82f6" stroke-width="1" rx="1" />
          </svg>
        </div>
        <div class="loc-tag">Male Urethra</div>
      </div>
    </div>
  </div>

  <script>
    // Polarity Toggle Interactivity
    const btnMicrovilli = document.getElementById('btnMicrovilli');
    const btnCilia = document.getElementById('btnCilia');
    const microvilliGroup = document.getElementById('microvilliGroup');
    const ciliaGroup = document.getElementById('ciliaGroup');

    btnMicrovilli.addEventListener('click', () => {
      btnMicrovilli.classList.add('active');
      btnCilia.classList.remove('active');
      microvilliGroup.style.display = 'block';
      ciliaGroup.style.display = 'none';
    });

    btnCilia.addEventListener('click', () => {
      btnCilia.classList.add('active');
      btnMicrovilli.classList.remove('active');
      microvilliGroup.style.display = 'none';
      ciliaGroup.style.display = 'block';
    });

    // Matrix Selection Interactivity
    const tiles = document.querySelectorAll('.cell-tile');
    tiles.forEach(tile => {
      tile.addEventListener('click', () => {
        tiles.forEach(t => t.classList.remove('active'));
        tile.classList.add('active');
      });
    });
  </script>
</body>
</html>

OGS.11.LS.HB.1

Aligned learning resources

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