<!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>Nominalization with -ity</title>
  <style>
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    }

    body {
      background: transparent;
      color: #0f172a;
      padding: 10px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      max-width: 480px;
      margin: 0 auto;
    }

    .row-card {
      background: #ffffff;
      border: 1.5px solid #e2e8f0;
      border-radius: 12px;
      padding: 10px 12px;
      cursor: pointer;
      box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
      transition: border-color 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease;
    }

    .row-card:hover {
      border-color: #38bdf8;
    }

    .row-card.active {
      border-color: #0284c7;
      background-color: #f8fafc;
      box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.35);
    }

    .equation {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 6px;
    }

    .badge-group {
      display: flex;
      align-items: center;
      gap: 5px;
      flex: 1;
      min-width: 0;
    }

    .badge {
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      padding: 4px 8px;
      border-radius: 6px;
      min-width: 62px;
    }

    .badge-adj {
      background: #e0f2fe;
      border: 1px solid #bae6fd;
      color: #0369a1;
    }

    .badge-sfx {
      background: #f3e8ff;
      border: 1px solid #e9d5ff;
      color: #7e22ce;
      min-width: 46px;
    }

    .badge-noun {
      background: #dcfce7;
      border: 1px solid #bbf7d0;
      color: #15803d;
      min-width: 66px;
    }

    .badge-label {
      font-size: 8px;
      font-weight: 700;
      letter-spacing: 0.5px;
      text-transform: uppercase;
      opacity: 0.85;
      line-height: 1;
      margin-bottom: 2px;
    }

    .badge-word {
      font-size: 13px;
      font-weight: 700;
      line-height: 1.2;
    }

    .symbol {
      color: #94a3b8;
      font-weight: 700;
      font-size: 13px;
      user-select: none;
    }

    .graphic-box {
      width: 44px;
      height: 44px;
      flex-shrink: 0;
      background: #f1f5f9;
      border: 1px solid #e2e8f0;
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 2px;
    }

    .graphic-box svg {
      width: 100%;
      height: 100%;
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    .sentence-panel {
      margin-top: 8px;
      padding-top: 8px;
      border-top: 1px dashed #cbd5e1;
      display: flex;
      flex-direction: column;
      gap: 4px;
      font-size: 12px;
      line-height: 1.35;
    }

    .sent-row {
      display: flex;
      align-items: baseline;
      gap: 6px;
    }

    .sent-tag {
      font-size: 9px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.4px;
      padding: 1px 5px;
      border-radius: 4px;
      white-space: nowrap;
      flex-shrink: 0;
    }

    .tag-desc {
      background: #e2e8f0;
      color: #475569;
    }

    .tag-acad {
      background: #dcfce7;
      color: #15803d;
    }

    .sent-text {
      color: #334155;
    }

    .sent-text strong {
      color: #0f172a;
    }

    .hint {
      text-align: center;
      font-size: 11px;
      font-weight: 600;
      color: #64748b;
      margin-top: 2px;
    }
  </style>
</head>
<body>

  
  <div class="row-card active" onclick="selectRow(this)">
    <div class="equation">
      <div class="badge-group">
        <div class="badge badge-adj">
          <span class="badge-label">Adjective</span>
          <span class="badge-word">dense</span>
        </div>
        <span class="symbol">+</span>
        <div class="badge badge-sfx">
          <span class="badge-label">Suffix</span>
          <span class="badge-word">-ity</span>
        </div>
        <span class="symbol">→</span>
        <div class="badge badge-noun">
          <span class="badge-label">Noun</span>
          <span class="badge-word">density</span>
        </div>
      </div>
      <div class="graphic-box" title="Dense particle packing">
        <svg viewBox="0 0 40 40">
          <rect x="5" y="5" width="30" height="30" rx="4" fill="#ffffff" stroke="#94a3b8" stroke-width="1.5"/>
          
          <circle cx="11" cy="11" r="2.2" fill="#0284c7"/>
          <circle cx="17" cy="11" r="2.2" fill="#0284c7"/>
          <circle cx="23" cy="11" r="2.2" fill="#0284c7"/>
          <circle cx="29" cy="11" r="2.2" fill="#0284c7"/>
          <circle cx="11" cy="17" r="2.2" fill="#0284c7"/>
          <circle cx="17" cy="17" r="2.2" fill="#0284c7"/>
          <circle cx="23" cy="17" r="2.2" fill="#0284c7"/>
          <circle cx="29" cy="17" r="2.2" fill="#0284c7"/>
          <circle cx="11" cy="23" r="2.2" fill="#0284c7"/>
          <circle cx="17" cy="23" r="2.2" fill="#0284c7"/>
          <circle cx="23" cy="23" r="2.2" fill="#0284c7"/>
          <circle cx="29" cy="23" r="2.2" fill="#0284c7"/>
          <circle cx="11" cy="29" r="2.2" fill="#0284c7"/>
          <circle cx="17" cy="29" r="2.2" fill="#0284c7"/>
          <circle cx="23" cy="29" r="2.2" fill="#0284c7"/>
          <circle cx="29" cy="29" r="2.2" fill="#0284c7"/>
        </svg>
      </div>
    </div>
    <div class="sentence-panel">
      <div class="sent-row">
        <span class="sent-tag tag-desc">Descriptive</span>
        <span class="sent-text">The material is <strong>dense</strong>.</span>
      </div>
      <div class="sent-row">
        <span class="sent-tag tag-acad">Academic</span>
        <span class="sent-text">The <strong>density</strong> was measured.</span>
      </div>
    </div>
  </div>

  
  <div class="row-card" onclick="selectRow(this)">
    <div class="equation">
      <div class="badge-group">
        <div class="badge badge-adj">
          <span class="badge-label">Adjective</span>
          <span class="badge-word">scarce</span>
        </div>
        <span class="symbol">+</span>
        <div class="badge badge-sfx">
          <span class="badge-label">Suffix</span>
          <span class="badge-word">-ity</span>
        </div>
        <span class="symbol">→</span>
        <div class="badge badge-noun">
          <span class="badge-label">Noun</span>
          <span class="badge-word">scarcity</span>
        </div>
      </div>
      <div class="graphic-box" title="Low supply gauge">
        <svg viewBox="0 0 40 40">
          <rect x="5" y="5" width="30" height="30" rx="4" fill="#ffffff" stroke="#94a3b8" stroke-width="1.5"/>
          
          <path d="M 10 27 A 12 12 0 1 1 30 27" fill="none" stroke="#e2e8f0" stroke-width="3.5" stroke-linecap="round"/>
          
          <path d="M 10 27 A 12 12 0 0 1 16 16" fill="none" stroke="#f59e0b" stroke-width="3.5" stroke-linecap="round"/>
          
          <circle cx="20" cy="25" r="2.5" fill="#334155"/>
          
          <line x1="20" y1="25" x2="13" y2="18" stroke="#0f172a" stroke-width="2" stroke-linecap="round"/>
        </svg>
      </div>
    </div>
    <div class="sentence-panel">
      <div class="sent-row">
        <span class="sent-tag tag-desc">Descriptive</span>
        <span class="sent-text">Fresh water is <strong>scarce</strong>.</span>
      </div>
      <div class="sent-row">
        <span class="sent-tag tag-acad">Academic</span>
        <span class="sent-text">Water <strong>scarcity</strong> is increasing.</span>
      </div>
    </div>
  </div>

  
  <div class="row-card" onclick="selectRow(this)">
    <div class="equation">
      <div class="badge-group">
        <div class="badge badge-adj">
          <span class="badge-label">Adjective</span>
          <span class="badge-word">stable</span>
        </div>
        <span class="symbol">+</span>
        <div class="badge badge-sfx">
          <span class="badge-label">Suffix</span>
          <span class="badge-word">-ity</span>
        </div>
        <span class="symbol">→</span>
        <div class="badge badge-noun">
          <span class="badge-label">Noun</span>
          <span class="badge-word">stability</span>
        </div>
      </div>
      <div class="graphic-box" title="Balanced scale equilibrium">
        <svg viewBox="0 0 40 40">
          <rect x="5" y="5" width="30" height="30" rx="4" fill="#ffffff" stroke="#94a3b8" stroke-width="1.5"/>
          
          <line x1="12" y1="31" x2="28" y2="31" stroke="#94a3b8" stroke-width="2" stroke-linecap="round"/>
          
          <polygon points="20,18 15,29 25,29" fill="#64748b"/>
          
          <line x1="8" y1="18" x2="32" y2="18" stroke="#10b981" stroke-width="2" stroke-linecap="round"/>
          
          <rect x="9" y="11" width="6" height="6" rx="1.5" fill="#15803d"/>
          <rect x="25" y="11" width="6" height="6" rx="1.5" fill="#15803d"/>
        </svg>
      </div>
    </div>
    <div class="sentence-panel">
      <div class="sent-row">
        <span class="sent-tag tag-desc">Descriptive</span>
        <span class="sent-text">The system is <strong>stable</strong>.</span>
      </div>
      <div class="sent-row">
        <span class="sent-tag tag-acad">Academic</span>
        <span class="sent-text">System <strong>stability</strong> was tested.</span>
      </div>
    </div>
  </div>

  <div class="hint">✦ Tap any row to highlight morphological shift</div>

  <script>
    function selectRow(card) {
      document.querySelectorAll('.row-card').forEach(c => c.classList.remove('active'));
      card.classList.add('active');
    }
  </script>
</body>
</html>

Understanding Nominalization: Turning Verbs and Adjectives into Nouns

<!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, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    }

    body {
      background: #ffffff;
      color: #1e2945;
      padding: 16px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      min-height: 100%;
    }

    .diagram {
      width: 100%;
      max-width: 560px;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 12px;
    }

    /* Interactive Stepper Navigation */
    .nav-tabs {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      justify-content: center;
      margin-bottom: 4px;
    }

    .tab-btn {
      background: #f1f5f9;
      border: 1px solid #cbd5e1;
      border-radius: 20px;
      padding: 5px 12px;
      font-size: 13px;
      font-weight: 600;
      color: #1e2945;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      gap: 5px;
      transition: background 0.2s, border-color 0.2s, box-shadow 0.2s;
    }

    .tab-btn.active {
      background: #1e2945;
      color: #ffffff;
      border-color: #1e2945;
    }

    /* Rows */
    .sentence-row {
      display: flex;
      width: 100%;
      gap: 8px;
      justify-content: center;
      align-items: stretch;
    }

    .box {
      border-radius: 8px;
      padding: 10px 8px;
      text-align: center;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      border: 2px solid transparent;
      transition: opacity 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
      min-width: 0;
    }

    .box-word {
      font-size: 15px;
      font-weight: 700;
      line-height: 1.2;
    }

    .box-role {
      font-size: 11px;
      font-weight: 600;
      margin-top: 3px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      opacity: 0.85;
    }

    /* Color Tokens */
    .subject-theme {
      background: #ecfdf5;
      border-color: #10b981;
      color: #065f46;
    }
    .verb-theme {
      background: #eff6ff;
      border-color: #3b82f6;
      color: #1e40af;
    }
    .adverb-theme {
      background: #fffbeb;
      border-color: #f59e0b;
      color: #92400e;
    }

    /* Top Row Layout */
    .top-row .box-subject { flex: 1.2; }
    .top-row .box-verb { flex: 1; }
    .top-row .box-adv { flex: 1; }

    /* SVG Mapping Graphic */
    .mapping-area {
      width: 100%;
      height: 90px;
      position: relative;
    }

    .connector-svg {
      width: 100%;
      height: 100%;
      overflow: visible;
    }

    .connector-path {
      fill: none;
      stroke-width: 2.5;
      stroke-linecap: round;
      transition: opacity 0.3s ease, stroke-width 0.3s ease;
    }

    .path-subject { stroke: #10b981; }
    .path-verb { stroke: #3b82f6; }
    .path-adv { stroke: #f59e0b; }

    /* Bottom Unified Phrase Container */
    .phrase-container {
      width: 100%;
      border: 2px dashed #94a3b8;
      border-radius: 12px;
      padding: 10px;
      background: #f8fafc;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 6px;
    }

    .bottom-row {
      display: flex;
      width: 100%;
      gap: 6px;
      align-items: stretch;
    }

    .determiner {
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 0 8px;
      font-size: 15px;
      font-weight: 700;
      color: #475569;
    }

    .bottom-row .box-adj { flex: 1; }
    .bottom-row .box-noun { flex: 1; }
    .bottom-row .box-mod { flex: 1.3; }

    .phrase-tag {
      font-size: 12px;
      font-weight: 700;
      color: #475569;
      background: #e2e8f0;
      padding: 2px 10px;
      border-radius: 10px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    /* Dimming inactive parts in focused steps */
    .dimmed {
      opacity: 0.2 !important;
    }

    .focused {
      box-shadow: 0 0 0 2px #1e2945;
    }

    @media (max-width: 420px) {
      .box-word { font-size: 14px; }
      .box-role { font-size: 10px; }
      .tab-btn { font-size: 12px; padding: 4px 8px; }
    }
  </style>
</head>
<body>

  <div class="diagram">
    
    <div class="nav-tabs">
      <button class="tab-btn active" onclick="setStep('all')">✦ Full Transformation</button>
      <button class="tab-btn" onclick="setStep('verb')">1. Verb → Noun</button>
      <button class="tab-btn" onclick="setStep('adv')">2. Adverb → Adj</button>
      <button class="tab-btn" onclick="setStep('subj')">3. Subject → Modifier</button>
    </div>

    
    <div class="sentence-row top-row">
      <div class="box box-subject subject-theme" id="top-subj">
        <div class="box-word">The bacteria</div>
        <div class="box-role">Subject</div>
      </div>
      <div class="box box-verb verb-theme" id="top-verb">
        <div class="box-word">grew</div>
        <div class="box-role">Verb</div>
      </div>
      <div class="box box-adv adverb-theme" id="top-adv">
        <div class="box-word">rapidly</div>
        <div class="box-role">Adverb</div>
      </div>
    </div>

    
    <div class="mapping-area">
      <svg class="connector-svg" viewBox="0 0 500 90" preserveAspectRatio="none">
        <defs>
          <marker id="arrow-subj" viewBox="0 0 10 10" refX="6" refY="5" markerWidth="6" markerHeight="6" orient="auto">
            <path d="M 0 1 L 8 5 L 0 9 z" fill="#10b981" />
          </marker>
          <marker id="arrow-verb" viewBox="0 0 10 10" refX="6" refY="5" markerWidth="6" markerHeight="6" orient="auto">
            <path d="M 0 1 L 8 5 L 0 9 z" fill="#3b82f6" />
          </marker>
          <marker id="arrow-adv" viewBox="0 0 10 10" refX="6" refY="5" markerWidth="6" markerHeight="6" orient="auto">
            <path d="M 0 1 L 8 5 L 0 9 z" fill="#f59e0b" />
          </marker>
        </defs>

        
        <path id="path-subj" class="connector-path path-subject" d="M 85,2 C 85,55 415,35 415,82" marker-end="url(#arrow-subj)" />

        
        <path id="path-verb" class="connector-path path-verb" d="M 250,2 C 250,45 285,45 285,82" marker-end="url(#arrow-verb)" />

        
        <path id="path-adv" class="connector-path path-adv" d="M 415,2 C 415,45 155,45 155,82" marker-end="url(#arrow-adv)" />
      </svg>
    </div>

    
    <div class="phrase-container" id="bottom-phrase">
      <div class="sentence-row bottom-row">
        <div class="determiner">The</div>
        <div class="box box-adj adverb-theme" id="bot-adj">
          <div class="box-word">rapid</div>
          <div class="box-role">Adjective</div>
        </div>
        <div class="box box-noun verb-theme" id="bot-noun">
          <div class="box-word">growth</div>
          <div class="box-role">Noun Core</div>
        </div>
        <div class="box box-mod subject-theme" id="bot-mod">
          <div class="box-word">of bacteria</div>
          <div class="box-role">Modifier</div>
        </div>
      </div>
      <div class="phrase-tag">Unified Academic Noun Phrase</div>
    </div>
  </div>

  <script>
    function setStep(step) {
      // Update active button
      document.querySelectorAll('.tab-btn').forEach((btn, idx) => {
        const matches = (step === 'all' && idx === 0) ||
                        (step === 'verb' && idx === 1) ||
                        (step === 'adv' && idx === 2) ||
                        (step === 'subj' && idx === 3);
        btn.classList.toggle('active', matches);
      });

      // Elements
      const topSubj = document.getElementById('top-subj');
      const topVerb = document.getElementById('top-verb');
      const topAdv = document.getElementById('top-adv');
      const botMod = document.getElementById('bot-mod');
      const botNoun = document.getElementById('bot-noun');
      const botAdj = document.getElementById('bot-adj');
      const pathSubj = document.getElementById('path-subj');
      const pathVerb = document.getElementById('path-verb');
      const pathAdv = document.getElementById('path-adv');

      // Reset dimming
      const allEls = [topSubj, topVerb, topAdv, botMod, botNoun, botAdj, pathSubj, pathVerb, pathAdv];
      allEls.forEach(el => el.classList.remove('dimmed', 'focused'));

      if (step === 'verb') {
        topSubj.classList.add('dimmed');
        topAdv.classList.add('dimmed');
        botMod.classList.add('dimmed');
        botAdj.classList.add('dimmed');
        pathSubj.classList.add('dimmed');
        pathAdv.classList.add('dimmed');
        topVerb.classList.add('focused');
        botNoun.classList.add('focused');
      } else if (step === 'adv') {
        topSubj.classList.add('dimmed');
        topVerb.classList.add('dimmed');
        botMod.classList.add('dimmed');
        botNoun.classList.add('dimmed');
        pathSubj.classList.add('dimmed');
        pathVerb.classList.add('dimmed');
        topAdv.classList.add('focused');
        botAdj.classList.add('focused');
      } else if (step === 'subj') {
        topVerb.classList.add('dimmed');
        topAdv.classList.add('dimmed');
        botNoun.classList.add('dimmed');
        botAdj.classList.add('dimmed');
        pathVerb.classList.add('dimmed');
        pathAdv.classList.add('dimmed');
        topSubj.classList.add('focused');
        botMod.classList.add('focused');
      }
    }
  </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;
      -webkit-tap-highlight-color: transparent;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
      background: #f8f9fa;
      color: #1e2945;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      padding: 16px;
      min-height: 100%;
      user-select: none;
    }

    .container {
      width: 100%;
      max-width: 580px;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    /* Tab Controls */
    .tab-bar {
      display: flex;
      justify-content: center;
      gap: 8px;
    }

    .tab-btn {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: 20px;
      padding: 6px 14px;
      font-size: 13px;
      font-weight: 600;
      color: #64748b;
      cursor: pointer;
      box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
      transition: all 0.25s ease;
    }

    .tab-btn.active {
      background: #1e2945;
      color: #ffffff;
      border-color: #1e2945;
      box-shadow: 0 2px 6px rgba(30, 41, 69, 0.2);
    }

    /* Transformation Tracks */
    .tracks {
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .track-row {
      display: grid;
      grid-template-columns: 1fr auto 1fr;
      align-items: center;
      gap: 8px;
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: 16px;
      padding: 12px 14px;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
      transition: opacity 0.3s ease, transform 0.3s ease, border-color 0.3s ease;
    }

    .track-row.dimmed {
      opacity: 0.35;
      transform: scale(0.98);
    }

    .track-row.highlight {
      border-color: #cbd5e1;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
    }

    /* Left: Base Bubble */
    .base-card {
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      padding: 10px 8px;
      border-radius: 12px;
      text-align: center;
      transition: transform 0.3s ease;
    }

    .base-card.verb {
      background: #fff7ed;
      border: 1.5px solid #fdba74;
    }

    .base-card.adj {
      background: #f0f9ff;
      border: 1.5px solid #7dd3fc;
    }

    .word {
      font-size: 16px;
      font-weight: 700;
      letter-spacing: -0.01em;
    }

    .verb .word { color: #c2410c; }
    .adj .word { color: #0369a1; }

    .tag {
      font-size: 11px;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      margin-top: 2px;
      opacity: 0.8;
    }

    .verb .tag { color: #ea580c; }
    .adj .tag { color: #0284c7; }

    /* Center: Suffix & Flow Arrow */
    .flow-connector {
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .suffix-tile {
      background: #f5f3ff;
      border: 1.5px solid #c4b5fd;
      color: #6d28d9;
      font-size: 13px;
      font-weight: 700;
      padding: 6px 9px;
      border-radius: 8px;
      box-shadow: 0 0 10px rgba(167, 139, 250, 0.35);
      animation: glow 2.5s ease-in-out infinite alternate;
      white-space: nowrap;
    }

    @keyframes glow {
      0% { box-shadow: 0 0 4px rgba(167, 139, 250, 0.2); }
      100% { box-shadow: 0 0 12px rgba(167, 139, 250, 0.55); }
    }

    .arrow-pulse {
      display: flex;
      align-items: center;
      color: #94a3b8;
      font-size: 15px;
      animation: pulse-arrow 1.8s ease-in-out infinite;
    }

    @keyframes pulse-arrow {
      0%, 100% { transform: translateX(0); opacity: 0.5; }
      50% { transform: translateX(3px); opacity: 1; color: #6366f1; }
    }

    /* Right: Academic Noun Card */
    .noun-card {
      background: #0f172a;
      border: 1.5px solid #38bdf8;
      border-radius: 12px;
      padding: 10px 8px;
      text-align: center;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 10px rgba(15, 23, 42, 0.15);
    }

    .noun-card .word {
      color: #f8fafc;
      font-size: 16px;
    }

    .noun-card .tag {
      color: #38bdf8;
    }

    /* Micro-Footer Indicator */
    .formula-bar {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 8px;
      font-size: 12px;
      font-weight: 600;
      color: #64748b;
      padding: 4px 8px;
    }

    .formula-tag {
      background: #e2e8f0;
      padding: 2px 6px;
      border-radius: 4px;
      color: #334155;
    }

    @media (max-width: 420px) {
      body { padding: 10px; }
      .track-row { padding: 10px 8px; gap: 4px; }
      .word { font-size: 14px; }
      .noun-card .word { font-size: 14px; }
      .tag { font-size: 10px; }
      .suffix-tile { font-size: 12px; padding: 4px 6px; }
      .tab-btn { font-size: 12px; padding: 5px 10px; }
    }
  </style>
</head>
<body>

  <div class="container">
    
    <div class="tab-bar">
      <button class="tab-btn active" id="btn-all" onclick="setMode('all')">All</button>
      <button class="tab-btn" id="btn-verb" onclick="setMode('verb')">Verb → Noun</button>
      <button class="tab-btn" id="btn-adj" onclick="setMode('adj')">Adjective → Noun</button>
    </div>

    
    <div class="tracks">
      
      <div class="track-row highlight" id="row-verb">
        <div class="base-card verb">
          <span class="word">react</span>
          <span class="tag">Verb</span>
        </div>

        <div class="flow-connector">
          <div class="suffix-tile">+ ion</div>
          <div class="arrow-pulse">➔</div>
        </div>

        <div class="noun-card">
          <span class="word">reaction</span>
          <span class="tag">Noun</span>
        </div>
      </div>

      
      <div class="track-row highlight" id="row-adj">
        <div class="base-card adj">
          <span class="word">pure</span>
          <span class="tag">Adjective</span>
        </div>

        <div class="flow-connector">
          <div class="suffix-tile">+ ity</div>
          <div class="arrow-pulse">➔</div>
        </div>

        <div class="noun-card">
          <span class="word">purity</span>
          <span class="tag">Noun</span>
        </div>
      </div>
    </div>

    
    <div class="formula-bar">
      <span class="formula-tag">Action / State</span>
      <span>+</span>
      <span class="formula-tag">Suffix</span>
      <span>=</span>
      <span class="formula-tag" style="background:#0f172a; color:#38bdf8;">Academic Noun</span>
    </div>
  </div>

  <script>
    function setMode(mode) {
      const btnAll = document.getElementById('btn-all');
      const btnVerb = document.getElementById('btn-verb');
      const btnAdj = document.getElementById('btn-adj');
      const rowVerb = document.getElementById('row-verb');
      const rowAdj = document.getElementById('row-adj');

      btnAll.classList.remove('active');
      btnVerb.classList.remove('active');
      btnAdj.classList.remove('active');

      if (mode === 'all') {
        btnAll.classList.add('active');
        rowVerb.classList.remove('dimmed');
        rowAdj.classList.remove('dimmed');
      } else if (mode === 'verb') {
        btnVerb.classList.add('active');
        rowVerb.classList.remove('dimmed');
        rowAdj.classList.add('dimmed');
      } else if (mode === 'adj') {
        btnAdj.classList.add('active');
        rowVerb.classList.add('dimmed');
        rowAdj.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;
      -webkit-tap-highlight-color: transparent;
    }

    body {
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      color: #1e2945;
      background: #ffffff;
      padding: 12px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      user-select: none;
      max-width: 680px;
      margin: 0 auto;
    }

    /* Tabs / Controls */
    .tab-bar {
      display: flex;
      gap: 6px;
      justify-content: center;
      flex-wrap: wrap;
    }

    .tab-btn {
      background: #f8fafc;
      border: 1px solid #e6e6e6;
      border-radius: 20px;
      padding: 5px 12px;
      font-size: 12px;
      font-weight: 600;
      color: #64748b;
      cursor: pointer;
      white-space: nowrap;
      transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
    }

    .tab-btn.active {
      background: #0284c7;
      color: #ffffff;
      border-color: #0284c7;
      box-shadow: 0 2px 8px rgba(2, 132, 199, 0.25);
    }

    /* Interactive Equation Stage */
    .stage {
      background: #f8fafc;
      border: 1px solid #e6e6e6;
      border-radius: 12px;
      padding: 12px 8px;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 8px;
      width: 100%;
    }

    .equation-row {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
      width: 100%;
      max-width: 100%;
      flex-wrap: nowrap;
    }

    .box {
      background: #ffffff;
      border: 1px solid #e6e6e6;
      border-radius: 8px;
      padding: 6px 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      min-width: 0;
      white-space: nowrap;
      box-shadow: 0 1px 3px rgba(0,0,0,0.04);
      transition: background-color 0.25s ease, border-color 0.25s ease;
    }

    .box-verb {
      border-color: #cbd5e1;
    }

    .box-suffix {
      border-color: #38bdf8;
      background: #f0f9ff;
    }

    .box-noun {
      border-color: #0284c7;
      background: #e0f2fe;
    }

    .symbol {
      font-size: 15px;
      font-weight: 700;
      color: #0ea5e9;
      flex-shrink: 0;
      user-select: none;
      line-height: 1;
    }

    .stem-text {
      font-size: 15px;
      font-weight: 700;
      letter-spacing: 0.2px;
      white-space: nowrap;
    }

    .strike-char {
      color: #ef4444;
      text-decoration: line-through;
      background: #fee2e2;
      border-radius: 3px;
      padding: 0 2px;
    }

    .suffix-text {
      font-size: 15px;
      font-weight: 700;
      color: #0284c7;
      white-space: nowrap;
    }

    .noun-text {
      font-size: 15px;
      font-weight: 800;
      color: #0369a1;
      white-space: nowrap;
    }

    .morph-rule-badge {
      display: inline-flex;
      align-items: center;
      gap: 4px;
      font-size: 11px;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.4px;
      padding: 3px 10px;
      border-radius: 12px;
      background: #ffffff;
      border: 1px solid #e2e8f0;
      color: #475569;
      text-align: center;
      max-width: 100%;
    }

    /* 3-Column Comparison Table */
    .table-container {
      display: flex;
      flex-direction: column;
      gap: 6px;
      width: 100%;
    }

    .table-header {
      display: grid;
      grid-template-columns: 1fr 0.9fr 1.3fr;
      gap: 8px;
      padding: 2px 10px;
      font-size: 11px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      color: #64748b;
    }

    .table-row {
      display: grid;
      grid-template-columns: 1fr 0.9fr 1.3fr;
      gap: 8px;
      align-items: center;
      padding: 8px 10px;
      background: #ffffff;
      border: 1px solid #e6e6e6;
      border-radius: 8px;
      cursor: pointer;
      transition: background-color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
    }

    .table-row:hover {
      border-color: #38bdf8;
      background: #f8fafc;
    }

    .table-row.active {
      border-color: #0284c7;
      background: #f0f9ff;
      box-shadow: 0 0 0 1px #0284c7;
    }

    .cell-verb {
      font-size: 13px;
      font-weight: 600;
      color: #1e2945;
      white-space: nowrap;
    }

    .cell-suffix-wrap {
      display: flex;
      align-items: center;
    }

    .cell-suffix {
      font-size: 12px;
      font-weight: 700;
      color: #0284c7;
      background: #e0f2fe;
      padding: 2px 6px;
      border-radius: 4px;
      display: inline-block;
      white-space: nowrap;
    }

    .cell-noun-group {
      display: flex;
      flex-direction: column;
      gap: 1px;
      min-width: 0;
    }

    .cell-noun {
      font-size: 13px;
      font-weight: 700;
      color: #0f172a;
      white-space: nowrap;
    }

    .cell-def {
      font-size: 10.5px;
      color: #64748b;
      font-weight: 500;
      line-height: 1.25;
    }

    /* Mobile Viewport Adjustments (≤ 420px) */
    @media (max-width: 420px) {
      body {
        padding: 8px 6px;
        gap: 8px;
      }

      .tab-btn {
        padding: 4px 10px;
        font-size: 11.5px;
      }

      .stage {
        padding: 10px 4px;
        gap: 6px;
      }

      .equation-row {
        gap: 4px;
      }

      .box {
        padding: 5px 6px;
      }

      .stem-text, .suffix-text, .noun-text {
        font-size: 12.5px;
      }

      .symbol {
        font-size: 13px;
      }

      .morph-rule-badge {
        font-size: 9.5px;
        padding: 2px 6px;
      }

      .table-header {
        grid-template-columns: 0.95fr 0.85fr 1.35fr;
        gap: 4px;
        padding: 2px 6px;
        font-size: 10px;
      }

      .table-row {
        grid-template-columns: 0.95fr 0.85fr 1.35fr;
        gap: 4px;
        padding: 6px 6px;
      }

      .cell-verb {
        font-size: 12px;
      }

      .cell-suffix {
        font-size: 11px;
        padding: 2px 4px;
      }

      .cell-noun {
        font-size: 12px;
      }

      .cell-def {
        font-size: 9.5px;
      }
    }
  </style>
</head>
<body>

  
  <div class="tab-bar">
    <button class="tab-btn active" onclick="selectRow(0)">isolate</button>
    <button class="tab-btn" onclick="selectRow(1)">establish</button>
    <button class="tab-btn" onclick="selectRow(2)">interfere</button>
  </div>

  
  <div class="stage">
    <div class="equation-row">
      <div class="box box-verb">
        <span id="eqStem" class="stem-text">isolat<span class="strike-char">e</span></span>
      </div>
      <span class="symbol">+</span>
      <div class="box box-suffix">
        <span id="eqSuffix" class="suffix-text">-tion</span>
      </div>
      <span class="symbol">→</span>
      <div class="box box-noun">
        <span id="eqNoun" class="noun-text">isolation</span>
      </div>
    </div>
    <div id="eqRule" class="morph-rule-badge">✦ Drop silent -e + add -tion</div>
  </div>

  
  <div class="table-container">
    <div class="table-header">
      <span>Root Verb</span>
      <span>Suffix</span>
      <span>Concept Noun</span>
    </div>

    <div class="table-row active" id="row-0" onclick="selectRow(0)">
      <div class="cell-verb">isolate</div>
      <div class="cell-suffix-wrap"><span class="cell-suffix">+ -tion</span></div>
      <div class="cell-noun-group">
        <span class="cell-noun">isolation</span>
        <span class="cell-def">state of being alone</span>
      </div>
    </div>

    <div class="table-row" id="row-1" onclick="selectRow(1)">
      <div class="cell-verb">establish</div>
      <div class="cell-suffix-wrap"><span class="cell-suffix">+ -ment</span></div>
      <div class="cell-noun-group">
        <span class="cell-noun">establishment</span>
        <span class="cell-def">created system / entity</span>
      </div>
    </div>

    <div class="table-row" id="row-2" onclick="selectRow(2)">
      <div class="cell-verb">interfere</div>
      <div class="cell-suffix-wrap"><span class="cell-suffix">+ -ence</span></div>
      <div class="cell-noun-group">
        <span class="cell-noun">interference</span>
        <span class="cell-def">act of hindering</span>
      </div>
    </div>
  </div>

  <script>
    const data = [
      {
        stemHtml: 'isolat<span class="strike-char">e</span>',
        suffix: '-tion',
        noun: 'isolation',
        rule: '✦ Drop silent -e + add -tion'
      },
      {
        stemHtml: 'establish',
        suffix: '-ment',
        noun: 'establishment',
        rule: '✦ Direct suffix attachment'
      },
      {
        stemHtml: 'interfer<span class="strike-char">e</span>',
        suffix: '-ence',
        noun: 'interference',
        rule: '✦ Drop silent -e + add -ence'
      }
    ];

    let currentIndex = 0;
    let timer = null;

    function selectRow(index, manual = true) {
      if (manual && timer) {
        clearInterval(timer);
        timer = null;
      }
      currentIndex = index;
      const item = data[index];

      document.getElementById('eqStem').innerHTML = item.stemHtml;
      document.getElementById('eqSuffix').textContent = item.suffix;
      document.getElementById('eqNoun').textContent = item.noun;
      document.getElementById('eqRule').textContent = item.rule;

      document.querySelectorAll('.tab-btn').forEach((btn, i) => {
        btn.classList.toggle('active', i === index);
      });

      document.querySelectorAll('.table-row').forEach((row, i) => {
        row.classList.toggle('active', i === index);
      });
    }

    // Gentle auto-cycle every 4 seconds
    timer = setInterval(() => {
      currentIndex = (currentIndex + 1) % data.length;
      selectRow(currentIndex, false);
    }, 4000);
  </script>
</body>
</html>

OGE.9.L.5

Aligned learning resources

Related diagrams