<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Surface Area to Volume Ratio</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: #1e293b;
      padding: 8px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: flex-start;
      min-height: 100vh;
      user-select: none;
    }

    .comparison {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 8px;
      width: 100%;
      max-width: 560px;
    }

    .cell-panel {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: 10px;
      padding: 8px;
      display: flex;
      flex-direction: column;
      align-items: center;
    }

    .title-tag {
      font-size: 11.5px;
      font-weight: 800;
      letter-spacing: 0.4px;
      text-transform: uppercase;
      color: #334155;
      margin-bottom: 2px;
      text-align: center;
    }

    .canvas-box {
      width: 100%;
      height: 138px;
      display: flex;
      align-items: center;
      justify-content: center;
      position: relative;
    }

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

    .stats-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 4px;
      width: 100%;
      margin-top: 4px;
    }

    .stat-box {
      background: #f1f5f9;
      border-radius: 6px;
      padding: 4px 2px;
      text-align: center;
    }

    .stat-label {
      font-size: 9.5px;
      color: #64748b;
      font-weight: 600;
    }

    .stat-val {
      font-size: 12px;
      font-weight: 800;
      color: #0f172a;
      white-space: nowrap;
    }

    .ratio-box {
      grid-column: span 2;
      background: #e0f2fe;
      border: 1px solid #bae6fd;
      border-radius: 6px;
      padding: 3px 6px;
      text-align: center;
    }

    .ratio-box.low {
      background: #fee2e2;
      border-color: #fecaca;
    }

    .ratio-title {
      font-size: 9.5px;
      font-weight: 700;
      color: #0369a1;
    }

    .ratio-box.low .ratio-title {
      color: #b91c1c;
    }

    .ratio-num {
      font-size: 14px;
      font-weight: 900;
      color: #0284c7;
    }

    .ratio-box.low .ratio-num {
      color: #dc2626;
    }

    /* Slider interactive area */
    .controls {
      width: 100%;
      max-width: 560px;
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: 10px;
      padding: 8px 12px;
      margin-top: 8px;
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .slider-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 12px;
      font-weight: 700;
      color: #334155;
    }

    .slider-val {
      background: #0284c7;
      color: white;
      padding: 2px 8px;
      border-radius: 10px;
      font-size: 11px;
      font-weight: 600;
    }

    .slider-row {
      display: flex;
      flex-direction: column;
      gap: 3px;
    }

    input[type=range] {
      width: 100%;
      height: 6px;
      accent-color: #0284c7;
      border-radius: 4px;
      outline: none;
      cursor: pointer;
    }

    .scale-ticks {
      display: flex;
      justify-content: space-between;
      font-size: 9.5px;
      color: #94a3b8;
      font-weight: 600;
    }

    .interactive-stats {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 4px;
      background: #f8fafc;
      padding: 5px 6px;
      border-radius: 6px;
      border: 1px solid #f1f5f9;
      text-align: center;
    }

    .istat-lbl {
      font-size: 9px;
      color: #64748b;
      font-weight: 600;
      text-transform: uppercase;
    }

    .istat-val {
      font-size: 11.5px;
      font-weight: 800;
      color: #0f172a;
      white-space: nowrap;
    }

    /* Diffusion animation */
    @keyframes pulse-small {
      0% { r: 28px; opacity: 1; stroke-width: 2px; }
      100% { r: 2px; opacity: 0.1; stroke-width: 1px; }
    }

    @keyframes pulse-large {
      0% { r: 54px; opacity: 1; stroke-width: 2px; }
      100% { r: 34px; opacity: 0; stroke-width: 1px; }
    }

    .diff-ring-s {
      fill: none;
      stroke: #0284c7;
      animation: pulse-small 2.2s cubic-bezier(0.4, 0, 0.2, 1) infinite;
    }
    .diff-ring-s.d2 { animation-delay: 0.7s; }
    .diff-ring-s.d3 { animation-delay: 1.4s; }

    .diff-ring-l {
      fill: none;
      stroke: #dc2626;
      animation: pulse-large 2.2s cubic-bezier(0.4, 0, 0.2, 1) infinite;
    }
    .diff-ring-l.d2 { animation-delay: 0.7s; }
    .diff-ring-l.d3 { animation-delay: 1.4s; }

    @media (max-width: 380px) {
      .title-tag { font-size: 10px; }
      .stat-val { font-size: 11px; }
      .ratio-num { font-size: 13px; }
      .slider-header { font-size: 11px; }
      .slider-val { font-size: 10px; }
      .istat-val { font-size: 10.5px; }
    }
  </style>
</head>
<body>

  <div class="comparison">
    
    <div class="cell-panel">
      <div class="title-tag">1 µm PROKARYOTE</div>
      <div class="canvas-box">
        <svg viewBox="0 0 160 150">
          
          <circle cx="80" cy="58" r="28" class="diff-ring-s" />
          <circle cx="80" cy="58" r="28" class="diff-ring-s d2" />
          <circle cx="80" cy="58" r="28" class="diff-ring-s d3" />
          
          
          <circle cx="80" cy="58" r="28" fill="#e0f2fe" stroke="#0284c7" stroke-width="2.5" />
          
          <circle cx="80" cy="58" r="9" fill="#38bdf8" />
          <circle cx="80" cy="58" r="3" fill="#0369a1" />

          
          <g stroke="#0284c7" stroke-width="2" stroke-linecap="round">
            <line x1="48" y1="58" x2="64" y2="58" />
            <polygon points="64,55 69,58 64,61" fill="#0284c7" />

            <line x1="112" y1="58" x2="96" y2="58" />
            <polygon points="96,55 91,58 96,61" fill="#0284c7" />

            <line x1="80" y1="26" x2="80" y2="42" />
            <polygon points="77,42 80,47 83,42" fill="#0284c7" />

            <line x1="80" y1="90" x2="80" y2="74" />
            <polygon points="77,74 80,69 83,74" fill="#0284c7" />
          </g>
          
          <text x="80" y="136" font-size="11" font-weight="700" fill="#0284c7" text-anchor="middle">Fast to Center ✓</text>
        </svg>
      </div>

      <div class="stats-grid">
        <div class="stat-box">
          <div class="stat-label">Area (6s²)</div>
          <div class="stat-val">6 µm²</div>
        </div>
        <div class="stat-box">
          <div class="stat-label">Vol (s³)</div>
          <div class="stat-val">1 µm³</div>
        </div>
        <div class="ratio-box">
          <div class="ratio-title">SA / V RATIO</div>
          <div class="ratio-num">6.0 : 1</div>
        </div>
      </div>
    </div>

    
    <div class="cell-panel">
      <div class="title-tag">10 µm EUKARYOTE</div>
      <div class="canvas-box">
        <svg viewBox="0 0 160 150">
          
          <circle cx="80" cy="58" r="54" class="diff-ring-l" />
          <circle cx="80" cy="58" r="54" class="diff-ring-l d2" />
          <circle cx="80" cy="58" r="54" class="diff-ring-l d3" />

          
          <circle cx="80" cy="58" r="54" fill="#fff1f2" stroke="#e11d48" stroke-width="2.5" />
          
          <circle cx="80" cy="58" r="38" fill="#ffe4e6" stroke="#fca5a5" stroke-dasharray="3 3" />
          
          <circle cx="80" cy="58" r="23" fill="#fee2e2" />
          <text x="80" y="61" font-size="8.5" font-weight="800" fill="#991b1b" text-anchor="middle">UNREACHED</text>

          
          <g stroke="#e11d48" stroke-width="1.8" stroke-linecap="round">
            <line x1="22" y1="58" x2="35" y2="58" />
            <polygon points="35,55 39,58 35,61" fill="#e11d48" />

            <line x1="138" y1="58" x2="125" y2="58" />
            <polygon points="125,55 121,58 125,61" fill="#e11d48" />

            <line x1="80" y1="2" x2="80" y2="15" />
            <polygon points="77,15 80,19 83,15" fill="#e11d48" />

            <line x1="80" y1="114" x2="80" y2="101" />
            <polygon points="77,101 80,97 83,101" fill="#e11d48" />
          </g>
          
          <text x="80" y="136" font-size="11" font-weight="700" fill="#dc2626" text-anchor="middle">Diffusion Stalls ✗</text>
        </svg>
      </div>

      <div class="stats-grid">
        <div class="stat-box">
          <div class="stat-label">Area (6s²)</div>
          <div class="stat-val">600 µm²</div>
        </div>
        <div class="stat-box">
          <div class="stat-label">Vol (s³)</div>
          <div class="stat-val">1000 µm³</div>
        </div>
        <div class="ratio-box low">
          <div class="ratio-title">SA / V RATIO</div>
          <div class="ratio-num">0.6 : 1</div>
        </div>
      </div>
    </div>
  </div>

  
  <div class="controls">
    <div class="slider-header">
      <span>Explore Cell Size Scale</span>
      <span class="slider-val" id="sizeLabel">Side (s) = 1.0 µm</span>
    </div>
    <div class="slider-row">
      <input type="range" id="sizeSlider" min="1" max="10" step="0.5" value="1" aria-label="Cell Size Slider">
      <div class="scale-ticks">
        <span>1 µm</span>
        <span>3 µm</span>
        <span>5 µm</span>
        <span>7 µm</span>
        <span>10 µm</span>
      </div>
    </div>
    <div class="interactive-stats">
      <div>
        <div class="istat-lbl">Surface Area</div>
        <div class="istat-val" id="dynSA">6 µm²</div>
      </div>
      <div>
        <div class="istat-lbl">Volume</div>
        <div class="istat-val" id="dynVol">1 µm³</div>
      </div>
      <div>
        <div class="istat-lbl">SA / V Ratio</div>
        <div class="istat-val" id="dynRatio" style="color: #0284c7;">6.0 : 1</div>
      </div>
    </div>
  </div>

  <script>
    const slider = document.getElementById('sizeSlider');
    const sizeLabel = document.getElementById('sizeLabel');
    const dynSA = document.getElementById('dynSA');
    const dynVol = document.getElementById('dynVol');
    const dynRatio = document.getElementById('dynRatio');

    slider.addEventListener('input', (e) => {
      const s = parseFloat(e.target.value);
      const sa = Math.round(6 * s * s);
      const vol = Math.round(s * s * s * 10) / 10;
      const ratio = (6 / s).toFixed(1);

      sizeLabel.textContent = `Side (s) = ${s.toFixed(1)} µm`;
      dynSA.textContent = `${sa} µm²`;
      dynVol.textContent = `${vol} µm³`;
      dynRatio.textContent = `${ratio} : 1`;

      if (ratio >= 3) {
        dynRatio.style.color = '#0284c7';
      } else if (ratio >= 1.5) {
        dynRatio.style.color = '#d97706';
      } else {
        dynRatio.style.color = '#dc2626';
      }
    });
  </script>
</body>
</html>

Cell Structure: Eukaryotic vs Prokaryotic Cells

<!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; }
    body {
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      background: transparent;
      color: #1e2945;
      padding: 8px 4px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      min-height: 100%;
    }

    .main-wrap {
      width: 100%;
      max-width: 580px;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .tabs {
      display: flex;
      gap: 6px;
      width: 100%;
    }

    .tab-btn {
      flex: 1;
      border: 1px solid #cbd5e1;
      background: #f8fafc;
      color: #475569;
      font-size: 12px;
      font-weight: 600;
      padding: 6px 8px;
      border-radius: 6px;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 4px;
      transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
    }

    .tab-btn:hover {
      background: #f1f5f9;
      color: #0f172a;
    }

    .tab-btn.active {
      background: #0284c7;
      color: #ffffff;
      border-color: #0284c7;
    }

    .svg-container {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    svg {
      width: 100%;
      height: auto;
      display: block;
    }

    .section-prok, .section-euk {
      transition: opacity 0.3s ease, filter 0.3s ease;
    }

    .dimmed {
      opacity: 0.2;
      filter: grayscale(0.6);
    }
  </style>
</head>
<body>

<div class="main-wrap">
  
  <div class="tabs">
    <button class="tab-btn active" id="btnBoth" onclick="setView('both')">✦ Compare Both</button>
    <button class="tab-btn" id="btnProk" onclick="setView('prok')">Prokaryotic</button>
    <button class="tab-btn" id="btnEuk" onclick="setView('euk')">Eukaryotic</button>
  </div>

  <div class="svg-container">
    <svg viewBox="0 0 560 410" xmlns="http://www.w3.org/2000/svg">
      <defs>
        
        <linearGradient id="prokBg" x1="0" y1="0" x2="1" y2="0">
          <stop offset="0%" stop-color="#f0fdf4" />
          <stop offset="100%" stop-color="#dcfce7" />
        </linearGradient>
        <linearGradient id="eukBg" x1="0" y1="0" x2="1" y2="0">
          <stop offset="0%" stop-color="#eff6ff" />
          <stop offset="100%" stop-color="#dbeafe" />
        </linearGradient>
        <linearGradient id="histoneGrad" x1="0" y1="0" x2="1" y2="1">
          <stop offset="0%" stop-color="#f59e0b" />
          <stop offset="100%" stop-color="#d97706" />
        </linearGradient>
      </defs>

      
      <g id="secProk" class="section-prok">
        
        <rect x="10" y="6" width="540" height="188" rx="10" fill="url(#prokBg)" stroke="#86efac" stroke-width="1.5" />
        
        
        <rect x="22" y="16" width="180" height="25" rx="5" fill="#15803d" />
        <text x="112" y="33" fill="#ffffff" font-size="11.5" font-weight="700" text-anchor="middle">PROKARYOTE (Bacteria)</text>

        <rect x="210" y="16" width="135" height="25" rx="5" fill="#dcfce7" stroke="#15803d" stroke-width="1" />
        <text x="277.5" y="33" fill="#15803d" font-size="11" font-weight="700" text-anchor="middle">Circular &amp; Naked</text>

        
        <rect x="22" y="50" width="323" height="134" rx="8" fill="#ffffff" fill-opacity="0.75" stroke="#22c55e" stroke-dasharray="4,4" stroke-width="1.5" />
        <text x="32" y="67" fill="#166534" font-size="10.5" font-weight="700">Nucleoid Region (No Membrane)</text>

        
        <path d="M 85,122 C 65,90 105,82 135,108 C 165,134 185,88 225,98 C 265,108 305,88 295,128 C 285,168 235,142 205,162 C 175,182 125,138 105,158 C 85,178 65,152 85,122 Z" 
              fill="none" stroke="#059669" stroke-width="3.5" stroke-linecap="round" stroke-linejoin="round" />
        
        
        <text x="180" y="126" fill="#047857" font-size="11" font-weight="700" text-anchor="middle">1 Circular DNA Loop</text>
        <text x="180" y="140" fill="#059669" font-size="10" font-weight="600" text-anchor="middle">Naked (No Histones)</text>

        
        <g transform="translate(355, 50)">
          <rect x="0" y="0" width="185" height="134" rx="8" fill="#ffffff" fill-opacity="0.75" stroke="#cbd5e1" stroke-width="1" />
          <text x="92.5" y="18" fill="#1e2945" font-size="11" font-weight="700" text-anchor="middle">Plasmids</text>

          
          <circle cx="52" cy="62" r="21" fill="none" stroke="#059669" stroke-width="3" />
          <circle cx="52" cy="62" r="15" fill="none" stroke="#059669" stroke-width="1" stroke-dasharray="2,2" />
          <text x="52" y="66" fill="#059669" font-size="9" font-weight="600" text-anchor="middle">Small</text>

          
          <circle cx="128" cy="68" r="15" fill="none" stroke="#059669" stroke-width="3" />
          <text x="128" y="72" fill="#059669" font-size="8.5" font-weight="600" text-anchor="middle">Ring</text>
          
          <text x="92.5" y="108" fill="#475569" font-size="9.5" font-weight="600" text-anchor="middle">Extra-chromosomal DNA</text>
          <text x="92.5" y="122" fill="#64748b" font-size="8.5" text-anchor="middle">Self-replicating rings</text>
        </g>
      </g>

      
      <g id="secEuk" class="section-euk">
        
        <rect x="10" y="204" width="540" height="198" rx="10" fill="url(#eukBg)" stroke="#93c5fd" stroke-width="1.5" />

        
        <rect x="22" y="214" width="180" height="25" rx="5" fill="#1d4ed8" />
        <text x="112" y="231" fill="#ffffff" font-size="11.5" font-weight="700" text-anchor="middle">EUKARYOTE (Human, Plant)</text>

        <rect x="210" y="214" width="165" height="25" rx="5" fill="#dbeafe" stroke="#1d4ed8" stroke-width="1" />
        <text x="292.5" y="231" fill="#1d4ed8" font-size="11" font-weight="700" text-anchor="middle">Linear &amp; Histone-bound</text>

        
        <g transform="translate(22, 248)">
          <rect x="0" y="0" width="178" height="144" rx="8" fill="#ffffff" fill-opacity="0.85" stroke="#93c5fd" stroke-width="1" />
          
          
          <path d="M 16,34 Q 89,12 162,34" fill="none" stroke="#2563eb" stroke-width="3" stroke-linecap="round" />
          <path d="M 16,40 Q 89,18 162,40" fill="none" stroke="#60a5fa" stroke-width="2" stroke-linecap="round" />
          
          
          <circle cx="58" cy="24.5" r="3" fill="#ffffff" stroke="#1d4ed8" stroke-width="1.5" />
          <circle cx="120" cy="24.5" r="3" fill="#ffffff" stroke="#1d4ed8" stroke-width="1.5" />
          
          <text x="89" y="52" fill="#1e40af" font-size="9.5" font-weight="700" text-anchor="middle">Double Nuclear Membrane</text>
          <text x="89" y="63" fill="#64748b" font-size="8.5" text-anchor="middle">with Nuclear Pores</text>

          
          <g transform="translate(89, 70)">
            
            <path d="M -16,4 C -12,16 -4,25 0,27 C -4,29 -12,38 -16,50" fill="none" stroke="#2563eb" stroke-width="4" stroke-linecap="round" />
            
            <path d="M 16,4 C 12,16 4,25 0,27 C 4,29 12,38 16,50" fill="none" stroke="#2563eb" stroke-width="4" stroke-linecap="round" />
            
            <circle cx="0" cy="27" r="3.5" fill="#1d4ed8" />
            
            <text x="0" y="64" fill="#1e40af" font-size="9.5" font-weight="700" text-anchor="middle">Linear Chromosome</text>
          </g>
        </g>

        
        <g transform="translate(208, 248)">
          <rect x="0" y="0" width="332" height="144" rx="8" fill="#ffffff" fill-opacity="0.85" stroke="#93c5fd" stroke-width="1" />
          
          <text x="166" y="18" fill="#1e40af" font-size="11" font-weight="700" text-anchor="middle">Nucleosomes ("Beads on a String")</text>

          
          <g transform="translate(14, 32)">
            
            <path d="M 0,38 Q 20,38 35,28" fill="none" stroke="#2563eb" stroke-width="2.5" />
            
            
            <g transform="translate(35, 10)">
              <circle cx="18" cy="18" r="15" fill="url(#histoneGrad)" />
              <circle cx="15" cy="15" r="13" fill="#fbbf24" fill-opacity="0.35" />
              
              <path d="M 2,15 C 4,0 34,0 36,16 C 37,33 3,33 6,22" fill="none" stroke="#1d4ed8" stroke-width="2.8" />
            </g>

            
            <path d="M 71,32 Q 88,43 103,28" fill="none" stroke="#2563eb" stroke-width="2.5" />

            
            <g transform="translate(103, 10)">
              <circle cx="18" cy="18" r="15" fill="url(#histoneGrad)" />
              <circle cx="15" cy="15" r="13" fill="#fbbf24" fill-opacity="0.35" />
              <path d="M 2,15 C 4,0 34,0 36,16 C 37,33 3,33 6,22" fill="none" stroke="#1d4ed8" stroke-width="2.8" />
            </g>

            
            <path d="M 139,32 Q 156,43 171,28" fill="none" stroke="#2563eb" stroke-width="2.5" />

            
            <g transform="translate(171, 10)">
              <circle cx="18" cy="18" r="15" fill="url(#histoneGrad)" />
              <circle cx="15" cy="15" r="13" fill="#fbbf24" fill-opacity="0.35" />
              <path d="M 2,15 C 4,0 34,0 36,16 C 37,33 3,33 6,22" fill="none" stroke="#1d4ed8" stroke-width="2.8" />
            </g>

            
            <path d="M 207,32 C 229,40 240,26 264,30" fill="none" stroke="#2563eb" stroke-width="2.2" />
            <path d="M 207,28 C 229,22 240,36 264,32" fill="none" stroke="#0ea5e9" stroke-width="2.2" />

            
            <line x1="222" y1="29" x2="222" y2="33" stroke="#475569" stroke-width="1.5" />
            <line x1="236" y1="28" x2="236" y2="34" stroke="#475569" stroke-width="1.5" />
            <line x1="250" y1="30" x2="250" y2="32" stroke="#475569" stroke-width="1.5" />
          </g>

          
          
          <line x1="121" y1="78" x2="121" y2="68" stroke="#b45309" stroke-width="1" stroke-dasharray="2,2" />
          <text x="121" y="89" fill="#b45309" font-size="9.5" font-weight="700" text-anchor="middle">Histone Core (Octamer)</text>

          
          <line x1="250" y1="78" x2="250" y2="64" stroke="#0369a1" stroke-width="1" stroke-dasharray="2,2" />
          <text x="250" y="89" fill="#0369a1" font-size="9.5" font-weight="700" text-anchor="middle">DNA Double Helix</text>

          
          <text x="166" y="104" fill="#334155" font-size="9" text-anchor="middle">DNA wound 1.65× around 8 histone proteins</text>
        </g>
      </g>
    </svg>
  </div>
</div>

<script>
  function setView(view) {
    const secProk = document.getElementById('secProk');
    const secEuk = document.getElementById('secEuk');
    const btnBoth = document.getElementById('btnBoth');
    const btnProk = document.getElementById('btnProk');
    const btnEuk = document.getElementById('btnEuk');

    btnBoth.classList.remove('active');
    btnProk.classList.remove('active');
    btnEuk.classList.remove('active');

    if (view === 'prok') {
      btnProk.classList.add('active');
      secProk.classList.remove('dimmed');
      secEuk.classList.add('dimmed');
    } else if (view === 'euk') {
      btnEuk.classList.add('active');
      secProk.classList.add('dimmed');
      secEuk.classList.remove('dimmed');
    } else {
      btnBoth.classList.add('active');
      secProk.classList.remove('dimmed');
      secEuk.classList.remove('dimmed');
    }
  }
</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; font-family: system-ui, -apple-system, sans-serif; }
    body {
      width: 100%;
      background: #ffffff;
      color: #1e293b;
      display: flex;
      flex-direction: column;
      align-items: center;
      padding: 10px;
      user-select: none;
    }

    /* Toggle bar */
    .controls {
      display: flex;
      gap: 8px;
      margin-bottom: 12px;
      background: #f1f5f9;
      padding: 4px;
      border-radius: 999px;
    }
    .toggle-btn {
      padding: 6px 14px;
      border: none;
      border-radius: 999px;
      font-size: 13px;
      font-weight: 600;
      cursor: pointer;
      background: transparent;
      color: #64748b;
      transition: all 0.25s ease;
    }
    .toggle-btn.active {
      background: #ffffff;
      color: #1e293b;
      box-shadow: 0 1px 4px rgba(0,0,0,0.12);
    }

    /* Cell arena */
    .cell-boundary {
      width: 100%;
      max-width: 480px;
      height: 300px;
      background: #f8fafc;
      border: 3px solid #cbd5e1;
      border-radius: 36px;
      position: relative;
      overflow: hidden;
      box-shadow: inset 0 0 20px rgba(0,0,0,0.03);
      transition: background 0.4s ease;
    }

    .cytoplasm-tag {
      position: absolute;
      top: 8px;
      left: 50%;
      transform: translateX(-50%);
      font-size: 11px;
      font-weight: 700;
      letter-spacing: 0.5px;
      color: #94a3b8;
      text-transform: uppercase;
      transition: color 0.3s ease;
      z-index: 1;
    }

    /* Rooms (Organelles) */
    .room {
      position: absolute;
      border-radius: 20px;
      padding: 8px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: flex-start;
      transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
      z-index: 2;
    }

    .room-title {
      font-size: 11px;
      font-weight: 700;
      margin-bottom: 2px;
      display: flex;
      align-items: center;
      gap: 4px;
    }
    .room-sub {
      font-size: 10px;
      font-weight: 600;
      opacity: 0.85;
    }

    /* Room 1: Lysosome (Acid Room) */
    .lysosome {
      top: 36px;
      left: 14px;
      width: 44%;
      height: 120px;
      background: #ffe4e6;
      border: 2.5px solid #f43f5e;
      color: #9f1239;
    }

    /* Room 2: Mitochondria (Power Plant) */
    .mitochondria {
      top: 36px;
      right: 14px;
      width: 46%;
      height: 120px;
      background: #ccfbf1;
      border: 2.5px solid #0d9488;
      color: #115e59;
    }

    /* Room 3: ER (Assembly Floor) */
    .er-room {
      bottom: 14px;
      left: 14px;
      right: 14px;
      height: 105px;
      background: #f1f5f9;
      border: 2.5px solid #64748b;
      color: #334155;
    }

    /* Particles & Visual Elements */
    .particle-box {
      width: 100%;
      height: 100%;
      position: relative;
      margin-top: 4px;
    }

    .enzyme {
      position: absolute;
      width: 16px;
      height: 16px;
      background: #e11d48;
      color: #ffffff;
      border-radius: 50%;
      font-size: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: all 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
      box-shadow: 0 2px 4px rgba(225, 29, 72, 0.3);
    }

    .atp-badge {
      position: absolute;
      background: #0d9488;
      color: white;
      font-size: 9px;
      font-weight: bold;
      padding: 2px 5px;
      border-radius: 6px;
      transition: all 0.5s ease;
    }

    .protein-chain {
      display: flex;
      gap: 6px;
      margin-top: 8px;
      transition: all 0.4s ease;
    }
    .amino {
      width: 18px;
      height: 18px;
      border-radius: 6px;
      background: #64748b;
      color: #fff;
      font-size: 9px;
      font-weight: bold;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: all 0.4s ease;
    }

    /* UNCOMPARTMENTALIZED STATE */
    .broken .cell-boundary {
      background: #fff1f2;
    }
    .broken .cytoplasm-tag {
      color: #e11d48;
    }

    /* Membranes dissolve */
    .broken .room {
      border: 2px dashed rgba(148, 163, 184, 0.35);
      background: transparent;
      box-shadow: none;
    }

    /* Enzymes spill into cytoplasm and ER */
    .broken .enz-1 { transform: translate(110px, 30px) scale(1.1); }
    .broken .enz-2 { transform: translate(50px, 120px) scale(1.1); }
    .broken .enz-3 { transform: translate(160px, 95px) scale(1.1); }
    .broken .enz-4 { transform: translate(85px, 110px) scale(1.1); }

    /* Energy and proteins degrade */
    .broken .atp-badge {
      opacity: 0.2;
      filter: grayscale(1);
      transform: translateY(15px);
    }
    .broken .amino {
      background: #cbd5e1;
      transform: translateY(6px) rotate(25deg);
      opacity: 0.4;
    }
    .broken .status-indicator {
      color: #e11d48 !important;
    }
  </style>
</head>
<body>

  
  <div class="controls">
    <button class="toggle-btn active" id="btnIntact">🛡️ Membranes Intact</button>
    <button class="toggle-btn" id="btnBroken">⚠️ No Membranes</button>
  </div>

  
  <div class="cell-boundary" id="cell">
    <div class="cytoplasm-tag" id="cytoTag">Cytoplasm (pH 7.2)</div>

    
    <div class="room lysosome">
      <div class="room-title"><span>⚗️</span> Lysosome</div>
      <div class="room-sub status-indicator">pH ~5.0 • Safe Acid</div>
      <div class="particle-box">
        <div class="enzyme enz-1" style="top: 8px; left: 12px;">✕</div>
        <div class="enzyme enz-2" style="top: 28px; left: 45px;">✕</div>
        <div class="enzyme enz-3" style="top: 10px; right: 18px;">✕</div>
        <div class="enzyme enz-4" style="top: 32px; left: 18px;">✕</div>
      </div>
    </div>

    
    <div class="room mitochondria">
      <div class="room-title"><span>⚡</span> Mitochondrion</div>
      <div class="room-sub status-indicator" id="atpStatus">H⁺ Gradient • High ATP</div>
      <div class="particle-box">
        <div class="atp-badge" style="top: 8px; left: 15px;">ATP</div>
        <div class="atp-badge" style="top: 28px; right: 20px;">ATP</div>
        <div class="atp-badge" style="top: 15px; left: 55px;">ATP</div>
      </div>
    </div>

    
    <div class="room er-room">
      <div class="room-title"><span>🏭</span> Endoplasmic Reticulum</div>
      <div class="room-sub status-indicator" id="erStatus">Protected Protein Assembly</div>
      <div class="protein-chain">
        <div class="amino">P</div>
        <div class="amino">R</div>
        <div class="amino">O</div>
        <div class="amino">T</div>
        <div class="amino">E</div>
        <div class="amino">I</div>
        <div class="amino">N</div>
      </div>
    </div>
  </div>

  <script>
    const btnIntact = document.getElementById('btnIntact');
    const btnBroken = document.getElementById('btnBroken');
    const cell = document.getElementById('cell');
    const cytoTag = document.getElementById('cytoTag');
    const atpStatus = document.getElementById('atpStatus');
    const erStatus = document.getElementById('erStatus');

    function setCompartmentalized(isIntact) {
      if (isIntact) {
        btnIntact.classList.add('active');
        btnBroken.classList.remove('active');
        cell.classList.remove('broken');
        cytoTag.textContent = "Cytoplasm (pH 7.2)";
        atpStatus.textContent = "H⁺ Gradient • High ATP";
        erStatus.textContent = "Protected Protein Assembly";
      } else {
        btnBroken.classList.add('active');
        btnIntact.classList.remove('active');
        cell.classList.add('broken');
        cytoTag.textContent = "Spill: Acid Acidifies Cell (Degradation)";
        atpStatus.textContent = "Gradient Lost ✕ No ATP";
        erStatus.textContent = "Proteins Destroyed by Acid ✕";
      }
    }

    btnIntact.addEventListener('click', () => setCompartmentalized(true));
    btnBroken.addEventListener('click', () => setCompartmentalized(false));
  </script>
</body>
</html>

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta name="aspect-ratio" content="4:3">
  <style>
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      width: 100%;
      min-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: center;
      padding: 12px 8px;
      user-select: none;
    }

    .main-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      width: 100%;
      max-width: 580px;
    }

    .ribo-card {
      background: #f8fafc;
      border-radius: 12px;
      padding: 12px 8px;
      display: flex;
      flex-direction: column;
      align-items: center;
      position: relative;
    }

    .title-badge {
      font-size: 16px;
      font-weight: 800;
      color: #0f172a;
      margin-bottom: 2px;
    }

    .type-label {
      font-size: 12px;
      font-weight: 600;
      color: #64748b;
      margin-bottom: 12px;
    }

    .ribo-svg {
      width: 100%;
      height: auto;
      max-width: 220px;
      overflow: visible;
    }

    .subunit {
      transition: opacity 0.3s ease, filter 0.3s ease;
      cursor: pointer;
    }

    .subunit:hover {
      filter: brightness(0.95);
    }

    .tag-large { fill: #0284c7; font-weight: 800; font-size: 15px; }
    .tag-small { fill: #d97706; font-weight: 800; font-size: 15px; }
    .tag-rrna { fill: #334155; font-weight: 600; font-size: 11px; }

    /* Interactive Subunit Highlighting */
    .controls {
      display: flex;
      gap: 6px;
      margin-top: 14px;
      flex-wrap: wrap;
      justify-content: center;
    }

    .btn-filter {
      background: #f1f5f9;
      border: 1px solid #cbd5e1;
      border-radius: 20px;
      padding: 4px 12px;
      font-size: 12px;
      font-weight: 700;
      color: #475569;
      cursor: pointer;
      transition: all 0.2s ease;
    }

    .btn-filter.active {
      background: #0284c7;
      border-color: #0284c7;
      color: #ffffff;
    }

    .dimmed {
      opacity: 0.2;
    }

    .mito-pill {
      margin-top: 12px;
      background: #f0fdf4;
      border: 1px solid #86efac;
      color: #166534;
      font-size: 11px;
      font-weight: 600;
      padding: 4px 10px;
      border-radius: 12px;
      display: flex;
      align-items: center;
      gap: 4px;
    }
  </style>
</head>
<body>

  <div class="main-grid">
    
    <div class="ribo-card">
      <div class="title-badge">70S</div>
      <div class="type-label">Prokaryotic</div>

      <svg class="ribo-svg" viewBox="0 0 160 170">
        
        <g class="subunit large-group" id="pro-large">
          <path d="M 30,75 C 20,40 45,15 80,15 C 115,15 140,40 130,75 C 105,80 55,80 30,75 Z" 
                fill="#bae6fd" stroke="#0284c7" stroke-width="2.5" stroke-linejoin="round" />
          <text x="80" y="44" text-anchor="middle" class="tag-large">50S</text>
          <text x="80" y="60" text-anchor="middle" class="tag-rrna">23S + 5S rRNA</text>
        </g>

        
        <g class="subunit small-group" id="pro-small">
          <ellipse cx="80" cy="115" rx="46" ry="24" 
                   fill="#fef3c7" stroke="#d97706" stroke-width="2.5" />
          <text x="80" y="112" text-anchor="middle" class="tag-small">30S</text>
          <text x="80" y="126" text-anchor="middle" class="tag-rrna">16S rRNA</text>
        </g>
      </svg>
    </div>

    
    <div class="ribo-card">
      <div class="title-badge">80S</div>
      <div class="type-label">Eukaryotic</div>

      <svg class="ribo-svg" viewBox="0 0 160 170">
        
        <g class="subunit large-group" id="euk-large">
          <path d="M 18,85 C 8,30 40,5 80,5 C 120,5 152,30 142,85 C 115,92 45,92 18,85 Z" 
                fill="#bae6fd" stroke="#0284c7" stroke-width="2.5" stroke-linejoin="round" />
          <text x="80" y="44" text-anchor="middle" class="tag-large">60S</text>
          <text x="80" y="62" text-anchor="middle" class="tag-rrna">28S · 5.8S · 5S</text>
        </g>

        
        <g class="subunit small-group" id="euk-small">
          <ellipse cx="80" cy="128" rx="56" ry="28" 
                   fill="#fef3c7" stroke="#d97706" stroke-width="2.5" />
          <text x="80" y="125" text-anchor="middle" class="tag-small">40S</text>
          <text x="80" y="139" text-anchor="middle" class="tag-rrna">18S rRNA</text>
        </g>
      </svg>
    </div>
  </div>

  
  <div class="controls">
    <button class="btn-filter active" onclick="highlight('all')">All Subunits</button>
    <button class="btn-filter" onclick="highlight('large')">Large Subunit</button>
    <button class="btn-filter" onclick="highlight('small')">Small Subunit</button>
  </div>

  
  <div class="mito-pill">
    <span>✦</span> Mitochondria contain 70S ribosomes
  </div>

  <script>
    function highlight(type) {
      document.querySelectorAll('.btn-filter').forEach(btn => btn.classList.remove('active'));
      event.target.classList.add('active');

      const large = document.querySelectorAll('.large-group');
      const small = document.querySelectorAll('.small-group');

      if (type === 'all') {
        large.forEach(el => el.classList.remove('dimmed'));
        small.forEach(el => el.classList.remove('dimmed'));
      } else if (type === 'large') {
        large.forEach(el => el.classList.remove('dimmed'));
        small.forEach(el => el.classList.add('dimmed'));
      } else if (type === 'small') {
        large.forEach(el => el.classList.add('dimmed'));
        small.forEach(el => el.classList.remove('dimmed'));
      }
    }
  </script>

</body>
</html>

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta name="aspect-ratio" content="4:3">
  <style>
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
      background: #ffffff;
      color: #0f172a;
      padding: 12px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: space-between;
      min-height: 100%;
    }

    .nav-bar {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      justify-content: center;
      margin-bottom: 8px;
      width: 100%;
    }

    .btn {
      appearance: none;
      border: 1px solid #cbd5e1;
      background: #f8fafc;
      color: #334155;
      font-size: 13px;
      font-weight: 600;
      padding: 6px 12px;
      border-radius: 20px;
      cursor: pointer;
      transition: all 0.25s ease;
      box-shadow: 0 1px 2px rgba(0,0,0,0.05);
    }

    .btn:hover {
      background: #f1f5f9;
      color: #0f172a;
    }

    .btn.active {
      background: #0f172a;
      color: #ffffff;
      border-color: #0f172a;
    }

    .cards-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 10px;
      width: 100%;
      max-width: 600px;
      flex: 1;
    }

    .cell-card {
      background: #fafafa;
      border: 1px solid #e2e8f0;
      border-radius: 12px;
      padding: 8px 6px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: space-between;
      position: relative;
    }

    .cell-header {
      text-align: center;
    }

    .cell-title {
      font-size: 14px;
      font-weight: 700;
      color: #0f172a;
    }

    .cell-scale {
      font-size: 11px;
      font-weight: 600;
      color: #64748b;
    }

    .svg-wrap {
      width: 100%;
      height: 180px;
      display: flex;
      align-items: center;
      justify-content: center;
    }

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

    .feature-tag {
      font-size: 11px;
      font-weight: 700;
      padding: 3px 8px;
      border-radius: 12px;
      text-align: center;
      transition: all 0.3s ease;
      background: #f1f5f9;
      color: #475569;
      min-height: 22px;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    /* Highlight transition states */
    .hl-dna, .hl-ribo, .hl-org, .hl-size {
      transition: opacity 0.3s ease, stroke-width 0.3s ease, stroke 0.3s ease, fill 0.3s ease, filter 0.3s ease;
    }

    .dimmed {
      opacity: 0.25 !important;
    }

    .highlighted-prok {
      stroke: #10b981 !important;
      fill: #10b981 !important;
      filter: drop-shadow(0 0 4px rgba(16,185,129,0.7));
    }
    
    path.highlighted-prok {
      fill: none !important;
    }

    .highlighted-euk {
      stroke: #0284c7 !important;
      fill: #0284c7 !important;
      filter: drop-shadow(0 0 4px rgba(2,132,199,0.7));
    }

    path.highlighted-euk {
      fill: none !important;
    }

    .tag-prok {
      background: #d1fae5;
      color: #065f46;
      box-shadow: 0 0 0 1px #10b981;
    }

    .tag-euk {
      background: #e0f2fe;
      color: #075985;
      box-shadow: 0 0 0 1px #0284c7;
    }

    .size-bracket {
      stroke: #94a3b8;
      stroke-width: 1.5;
      fill: none;
    }
  </style>
</head>
<body>

  
  <div class="nav-bar">
    <button class="btn active" onclick="setMode('all')">Overview</button>
    <button class="btn" onclick="setMode('size')">Size</button>
    <button class="btn" onclick="setMode('dna')">DNA</button>
    <button class="btn" onclick="setMode('ribo')">Ribosomes</button>
    <button class="btn" onclick="setMode('org')">Organelles</button>
  </div>

  
  <div class="cards-container">
    
    
    <div class="cell-card" id="card-prok">
      <div class="cell-header">
        <div class="cell-title">Prokaryote</div>
        <div class="cell-scale">1–5 µm (Small)</div>
      </div>

      <div class="svg-wrap">
        <svg viewBox="0 0 160 160">
          
          <g id="prok-size-ref" class="hl-size" opacity="0">
            <rect x="50" y="50" width="60" height="60" fill="none" stroke="#10b981" stroke-width="1.5" stroke-dasharray="3,3" rx="4"/>
          </g>

          
          <g id="prok-body">
            
            <rect x="52" y="35" width="56" height="90" rx="28" fill="#f0fdf4" stroke="#86efac" stroke-width="4"/>
            
            <rect x="55" y="38" width="50" height="84" rx="25" fill="none" stroke="#22c55e" stroke-width="1.5"/>
          </g>

          
          <g id="prok-ribo" class="hl-ribo">
            <circle cx="68" cy="55" r="1.5" fill="#64748b"/>
            <circle cx="92" cy="58" r="1.5" fill="#64748b"/>
            <circle cx="65" cy="78" r="1.5" fill="#64748b"/>
            <circle cx="95" cy="85" r="1.5" fill="#64748b"/>
            <circle cx="70" cy="105" r="1.5" fill="#64748b"/>
            <circle cx="90" cy="102" r="1.5" fill="#64748b"/>
            <circle cx="78" cy="48" r="1.5" fill="#64748b"/>
            <circle cx="82" cy="112" r="1.5" fill="#64748b"/>
          </g>

          
          <g id="prok-dna" class="hl-dna">
            <path d="M 72,70 C 65,65 95,65 88,72 C 80,80 95,95 85,92 C 75,90 65,80 72,70 Z" fill="none" stroke="#10b981" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round"/>
            <path d="M 76,73 C 86,76 82,86 74,83 C 68,80 84,70 76,73 Z" fill="none" stroke="#10b981" stroke-width="2" stroke-linecap="round"/>
          </g>

          
          <g id="prok-org" class="hl-org" opacity="0">
            <text x="80" y="84" text-anchor="middle" font-size="11" font-weight="700" fill="#94a3b8">No Organelles</text>
          </g>
        </svg>
      </div>

      <div class="feature-tag" id="tag-prok">Bacterium</div>
    </div>

    
    <div class="cell-card" id="card-euk">
      <div class="cell-header">
        <div class="cell-title">Eukaryote</div>
        <div class="cell-scale">10–100 µm (Scaled ~5×)</div>
      </div>

      <div class="svg-wrap">
        <svg viewBox="0 0 160 160">
          
          <g id="euk-body">
            <ellipse cx="80" cy="80" rx="72" ry="72" fill="#f0f9ff" stroke="#7dd3fc" stroke-width="4"/>
            <ellipse cx="80" cy="80" rx="69" ry="69" fill="none" stroke="#0284c7" stroke-width="1.5"/>
          </g>

          
          <g id="euk-er" class="hl-org">
            <path d="M 52,65 C 45,72 45,88 52,95" fill="none" stroke="#93c5fd" stroke-width="3" stroke-linecap="round"/>
            <path d="M 46,60 C 37,70 37,90 46,100" fill="none" stroke="#93c5fd" stroke-width="3" stroke-linecap="round"/>
          </g>

          
          <g id="euk-mito" class="hl-org">
            
            <g transform="translate(108, 48) rotate(35)">
              <rect x="-8" y="-14" width="16" height="28" rx="8" fill="#fed7aa" stroke="#f97316" stroke-width="1.5"/>
              <path d="M -5,-8 L 5,-4 L -5,0 L 5,4 L -5,8" fill="none" stroke="#ea580c" stroke-width="1"/>
            </g>
            
            <g transform="translate(112, 110) rotate(-30)">
              <rect x="-7" y="-12" width="14" height="24" rx="7" fill="#fed7aa" stroke="#f97316" stroke-width="1.5"/>
              <path d="M -4,-6 L 4,-3 L -4,0 L 4,3 L -4,6" fill="none" stroke="#ea580c" stroke-width="1"/>
            </g>
          </g>

          
          <g id="euk-ribo" class="hl-ribo">
            <circle cx="48" cy="62" r="2" fill="#475569"/>
            <circle cx="43" cy="74" r="2" fill="#475569"/>
            <circle cx="43" cy="86" r="2" fill="#475569"/>
            <circle cx="48" cy="98" r="2" fill="#475569"/>
            <circle cx="95" cy="35" r="2" fill="#475569"/>
            <circle cx="120" cy="80" r="2" fill="#475569"/>
            <circle cx="70" cy="132" r="2" fill="#475569"/>
            <circle cx="95" cy="135" r="2" fill="#475569"/>
          </g>

          
          <g id="euk-dna" class="hl-dna">
            
            <circle cx="80" cy="80" r="26" fill="#e0e7ff" stroke="#6366f1" stroke-width="2.5" stroke-dasharray="6,2"/>
            
            <circle cx="80" cy="80" r="8" fill="#4338ca"/>
            
            <path d="M 66,74 Q 72,70 74,78" fill="none" stroke="#312e81" stroke-width="2" stroke-linecap="round"/>
            <path d="M 88,72 Q 94,76 90,84" fill="none" stroke="#312e81" stroke-width="2" stroke-linecap="round"/>
            <path d="M 70,88 Q 78,92 84,88" fill="none" stroke="#312e81" stroke-width="2" stroke-linecap="round"/>
          </g>
        </svg>
      </div>

      <div class="feature-tag" id="tag-euk">Plant / Animal</div>
    </div>

  </div>

  <script>
    function setMode(mode) {
      // Button states
      document.querySelectorAll('.btn').forEach(b => b.classList.remove('active'));
      const activeBtn = Array.from(document.querySelectorAll('.btn')).find(b => 
        b.getAttribute('onclick').includes(mode)
      );
      if (activeBtn) activeBtn.classList.add('active');

      // Elements
      const prokDna = document.getElementById('prok-dna');
      const eukDna = document.getElementById('euk-dna');
      const prokRibo = document.getElementById('prok-ribo');
      const eukRibo = document.getElementById('euk-ribo');
      const prokOrg = document.getElementById('prok-org');
      const eukEr = document.getElementById('euk-er');
      const eukMito = document.getElementById('euk-mito');
      const prokSize = document.getElementById('prok-size-ref');

      const tagProk = document.getElementById('tag-prok');
      const tagEuk = document.getElementById('tag-euk');

      // Reset all highlights and dimming
      document.querySelectorAll('.hl-dna, .hl-ribo, .hl-org, .hl-size').forEach(el => {
        el.classList.remove('dimmed', 'highlighted-prok', 'highlighted-euk');
      });
      prokOrg.setAttribute('opacity', '0');
      prokSize.setAttribute('opacity', '0');
      tagProk.className = 'feature-tag';
      tagEuk.className = 'feature-tag';

      if (mode === 'all') {
        tagProk.textContent = 'Bacterium';
        tagEuk.textContent = 'Plant / Animal';
      } 
      else if (mode === 'size') {
        prokSize.setAttribute('opacity', '1');
        tagProk.textContent = '1–5 µm';
        tagEuk.textContent = '10–100 µm (10×)';
        tagProk.classList.add('tag-prok');
        tagEuk.classList.add('tag-euk');
      } 
      else if (mode === 'dna') {
        prokRibo.classList.add('dimmed');
        eukRibo.classList.add('dimmed');
        eukEr.classList.add('dimmed');
        eukMito.classList.add('dimmed');

        prokDna.classList.add('highlighted-prok');
        eukDna.classList.add('highlighted-euk');

        tagProk.textContent = 'Nucleoid (Circular)';
        tagEuk.textContent = 'Nucleus (Linear)';
        tagProk.classList.add('tag-prok');
        tagEuk.classList.add('tag-euk');
      } 
      else if (mode === 'ribo') {
        prokDna.classList.add('dimmed');
        eukDna.classList.add('dimmed');
        eukEr.classList.add('dimmed');
        eukMito.classList.add('dimmed');

        prokRibo.classList.add('highlighted-prok');
        eukRibo.classList.add('highlighted-euk');

        tagProk.textContent = '70S Ribosomes';
        tagEuk.textContent = '80S Ribosomes';
        tagProk.classList.add('tag-prok');
        tagEuk.classList.add('tag-euk');
      } 
      else if (mode === 'org') {
        prokDna.classList.add('dimmed');
        eukDna.classList.add('dimmed');
        prokRibo.classList.add('dimmed');
        eukRibo.classList.add('dimmed');

        prokOrg.setAttribute('opacity', '1');
        eukEr.classList.add('highlighted-euk');
        eukMito.classList.add('highlighted-euk');

        tagProk.textContent = 'No Organelles';
        tagEuk.textContent = 'Membrane Organelles';
        tagProk.classList.add('tag-prok');
        tagEuk.classList.add('tag-euk');
      }
    }
  </script>
</body>
</html>

OGS.10.CB.1

Aligned learning resources

Related diagrams