<!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>Tier 2 Academic Vocabulary: Compare</title>
  <style>
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-tap-highlight-color: transparent;
    }

    body {
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      color: #1e293b;
      background: transparent;
      width: 100%;
      height: 100%;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      padding: 8px;
      user-select: none;
    }

    .diagram-area {
      width: 100%;
      max-width: 420px;
      position: relative;
    }

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

    /* Node Card Styles */
    .card-node {
      cursor: pointer;
      transition: transform 0.25s ease, filter 0.25s ease;
    }
    .card-node:hover {
      filter: brightness(0.97);
    }
    .card-node.active rect.bg {
      stroke-width: 2.5px;
      filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.12));
    }

    /* Branch Lines */
    .branch-line {
      stroke-width: 2.5;
      stroke-dasharray: 4 3;
      transition: stroke-width 0.3s ease, stroke-dashoffset 0.3s ease;
    }
    .branch-line.active {
      stroke-width: 4;
      stroke-dasharray: none;
    }

    /* Center Circle */
    .center-circle {
      cursor: default;
    }

    /* Instruction / Context banner */
    .action-bar {
      display: flex;
      justify-content: center;
      gap: 6px;
      margin-top: 10px;
      width: 100%;
      max-width: 400px;
    }

    .btn-step {
      flex: 1;
      padding: 8px 4px;
      font-size: 13px;
      font-weight: 600;
      border: 1px solid #cbd5e1;
      background: #f8fafc;
      color: #475569;
      border-radius: 8px;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 4px;
      transition: all 0.2s ease;
    }
    .btn-step.active {
      background: #0284c7;
      color: #ffffff;
      border-color: #0284c7;
      box-shadow: 0 2px 6px rgba(2, 132, 199, 0.3);
    }

    .prompt-box {
      margin-top: 8px;
      padding: 8px 12px;
      background: #f1f5f9;
      border-left: 4px solid #0284c7;
      border-radius: 4px 8px 8px 4px;
      font-size: 14px;
      color: #0f172a;
      width: 100%;
      max-width: 400px;
      min-height: 42px;
      display: flex;
      align-items: center;
      font-weight: 500;
    }
    .prompt-box b {
      color: #0284c7;
      margin-right: 4px;
    }
  </style>
</head>
<body>

  <div class="diagram-area">
    <svg viewBox="0 0 400 320" aria-label="Tier 2 Word diagram showing Compare across Science, Math, Reading, and Social Studies">
      
      <line id="line-0" class="branch-line active" x1="200" y1="145" x2="85" y2="65" stroke="#16a34a" />
      <line id="line-1" class="branch-line" x1="200" y1="145" x2="315" y2="65" stroke="#4f46e5" />
      <line id="line-2" class="branch-line" x1="200" y1="145" x2="85" y2="225" stroke="#d97706" />
      <line id="line-3" class="branch-line" x1="200" y1="145" x2="315" y2="225" stroke="#0d9488" />

      
      <g class="center-circle" transform="translate(200, 145)">
        <circle r="52" fill="#eff6ff" stroke="#0284c7" stroke-width="3" />
        <circle r="46" fill="#ffffff" />
        <text y="-18" text-anchor="middle" font-size="10" font-weight="700" fill="#0284c7" letter-spacing="1">TIER 2 WORD</text>
        <text y="7" text-anchor="middle" font-size="20" font-weight="800" fill="#0369a1">Compare</text>
        <text y="24" text-anchor="middle" font-size="11" font-weight="600" fill="#64748b">All Subjects ✦</text>
      </g>

      
      <g id="card-0" class="card-node active" transform="translate(10, 20)" onclick="selectSubject(0)">
        <rect class="bg" width="150" height="70" rx="10" fill="#f0fdf4" stroke="#16a34a" stroke-width="1.5" />
        <text x="12" y="24" font-size="15" font-weight="700" fill="#15803d">🧪 Science</text>
        <text x="12" y="44" font-size="12.5" font-weight="600" fill="#166534">Compare two</text>
        <text x="12" y="60" font-size="12.5" font-weight="600" fill="#166534">types of soil.</text>
      </g>

      
      <g id="card-1" class="card-node" transform="translate(240, 20)" onclick="selectSubject(1)">
        <rect class="bg" width="150" height="70" rx="10" fill="#eef2ff" stroke="#4f46e5" stroke-width="1.5" />
        <text x="12" y="24" font-size="15" font-weight="700" fill="#4338ca">🧮 Math</text>
        <text x="12" y="44" font-size="12.5" font-weight="600" fill="#3730a3">Compare fractions</text>
        <text x="12" y="60" font-size="12.5" font-weight="600" fill="#3730a3">using &gt; or &lt;.</text>
      </g>

      
      <g id="card-2" class="card-node" transform="translate(10, 210)" onclick="selectSubject(2)">
        <rect class="bg" width="150" height="70" rx="10" fill="#fffbeb" stroke="#d97706" stroke-width="1.5" />
        <text x="12" y="24" font-size="15" font-weight="700" fill="#b45309">📖 Reading</text>
        <text x="12" y="44" font-size="12.5" font-weight="600" fill="#92400e">Compare two</text>
        <text x="12" y="60" font-size="12.5" font-weight="600" fill="#92400e">characters.</text>
      </g>

      
      <g id="card-3" class="card-node" transform="translate(240, 210)" onclick="selectSubject(3)">
        <rect class="bg" width="150" height="70" rx="10" fill="#f0fdfa" stroke="#0d9488" stroke-width="1.5" />
        <text x="12" y="24" font-size="15" font-weight="700" fill="#0f766e">🌍 Soc. Studies</text>
        <text x="12" y="44" font-size="12.5" font-weight="600" fill="#115e59">Compare past</text>
        <text x="12" y="60" font-size="12.5" font-weight="600" fill="#115e59">and present life.</text>
      </g>
    </svg>
  </div>

  
  <div class="action-bar" role="tablist">
    <button class="btn-step active" id="btn-0" onclick="selectSubject(0)" role="tab">🧪 Science</button>
    <button class="btn-step" id="btn-1" onclick="selectSubject(1)" role="tab">🧮 Math</button>
    <button class="btn-step" id="btn-2" onclick="selectSubject(2)" role="tab">📖 Reading</button>
    <button class="btn-step" id="btn-3" onclick="selectSubject(3)" role="tab">🌍 History</button>
  </div>

  
  <div class="prompt-box" id="promptText">
    <span><b>Science:</b> "Compare two types of soil."</span>
  </div>

  <script>
    const subjects = [
      { name: "Science", prompt: '<b>Science:</b> "Compare two types of soil."', color: '#16a34a' },
      { name: "Math", prompt: '<b>Math:</b> "Compare two fractions using &gt; or &lt;."', color: '#4f46e5' },
      { name: "Reading", prompt: '<b>Reading:</b> "Compare two story characters."', color: '#d97706' },
      { name: "Social Studies", prompt: '<b>Social Studies:</b> "Compare life in past & present."', color: '#0d9488' }
    ];

    let currentIndex = 0;

    function selectSubject(index) {
      currentIndex = index;
      for (let i = 0; i < 4; i++) {
        const card = document.getElementById('card-' + i);
        const line = document.getElementById('line-' + i);
        const btn = document.getElementById('btn-' + i);

        if (i === index) {
          card.classList.add('active');
          line.classList.add('active');
          btn.classList.add('active');
        } else {
          card.classList.remove('active');
          line.classList.remove('active');
          btn.classList.remove('active');
        }
      }

      const promptEl = document.getElementById('promptText');
      promptEl.innerHTML = subjects[index].prompt;
      promptEl.style.borderLeftColor = subjects[index].color;
    }
  </script>
</body>
</html>

Distinguishing Conversational Vocabulary from General Academic Words

<!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;
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    }

    body {
      background: transparent;
      padding: 10px;
      color: #1e2945;
      display: flex;
      flex-direction: column;
      gap: 10px;
      user-select: none;
    }

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

    .filter-btn {
      background: #f1f5f9;
      border: 2px solid transparent;
      padding: 6px 12px;
      border-radius: 20px;
      font-size: 13px;
      font-weight: 700;
      color: #64748b;
      cursor: pointer;
      transition: all 0.2s ease;
    }

    .filter-btn.active {
      background: #e0f2fe;
      color: #0284c7;
      border-color: #0284c7;
    }

    /* 2x2 Grid */
    .grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 10px;
      width: 100%;
    }

    @media (max-width: 340px) {
      .grid {
        grid-template-columns: 1fr;
      }
    }

    /* Cards */
    .vocab-card {
      background: #ffffff;
      border-radius: 14px;
      padding: 10px;
      display: flex;
      flex-direction: column;
      gap: 8px;
      box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06);
      border: 2px solid #e2e8f0;
      transition: transform 0.2s ease, opacity 0.2s ease, border-color 0.2s ease;
      position: relative;
    }

    .vocab-card.dimmed {
      opacity: 0.25;
      transform: scale(0.97);
    }

    .vocab-card.highlight {
      border-color: #3b82f6;
      box-shadow: 0 4px 12px rgba(59, 130, 246, 0.15);
    }

    /* Card Header */
    .card-head {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

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

    .tag {
      font-size: 11px;
      font-weight: 800;
      text-transform: uppercase;
      padding: 2px 7px;
      border-radius: 10px;
      letter-spacing: 0.3px;
    }

    .tag-tier2 {
      background: #ede9fe;
      color: #7c3aed;
    }

    .tag-tier3 {
      background: #fef3c7;
      color: #d97706;
    }

    /* Split Meanings (Tier 2) */
    .split-box {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 6px;
      background: #f8fafc;
      border-radius: 10px;
      padding: 6px;
    }

    .meaning-item {
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      gap: 2px;
      padding: 4px 2px;
      background: #ffffff;
      border-radius: 8px;
      border: 1px solid #f1f5f9;
    }

    .emoji-icon {
      font-size: 20px;
      line-height: 1.2;
    }

    .subject-label {
      font-size: 11px;
      font-weight: 700;
      color: #475569;
    }

    .sense-label {
      font-size: 11px;
      color: #64748b;
      font-weight: 500;
    }

    /* Single Subject (Tier 3) */
    .single-box {
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      text-align: center;
      background: #fffbeb;
      border-radius: 10px;
      padding: 10px 6px;
      gap: 4px;
      border: 1px dashed #fcd34d;
      flex: 1;
    }

    .single-badge {
      font-size: 11px;
      font-weight: 700;
      color: #b45309;
      background: #fef3c7;
      padding: 2px 8px;
      border-radius: 6px;
    }
  </style>
</head>
<body>

  
  <div class="filter-bar">
    <button class="filter-btn active" onclick="setFilter('all', this)">All Words</button>
    <button class="filter-btn" onclick="setFilter('tier2', this)">Tier 2 (Multi-Subject)</button>
    <button class="filter-btn" onclick="setFilter('tier3', this)">Tier 3 (Single-Subject)</button>
  </div>

  
  <div class="grid">
    
    
    <div class="vocab-card" data-tier="tier2">
      <div class="card-head">
        <span class="word-title">Volume</span>
        <span class="tag tag-tier2">Tier 2</span>
      </div>
      <div class="split-box">
        <div class="meaning-item">
          <span class="emoji-icon">🔊</span>
          <span class="subject-label">Music</span>
          <span class="sense-label">Sound level</span>
        </div>
        <div class="meaning-item">
          <span class="emoji-icon">🧪</span>
          <span class="subject-label">Science</span>
          <span class="sense-label">Space filled</span>
        </div>
      </div>
    </div>

    
    <div class="vocab-card" data-tier="tier2">
      <div class="card-head">
        <span class="word-title">Property</span>
        <span class="tag tag-tier2">Tier 2</span>
      </div>
      <div class="split-box">
        <div class="meaning-item">
          <span class="emoji-icon">🏡</span>
          <span class="subject-label">Social St.</span>
          <span class="sense-label">Owned land</span>
        </div>
        <div class="meaning-item">
          <span class="emoji-icon">🧲</span>
          <span class="subject-label">Science</span>
          <span class="sense-label">Trait</span>
        </div>
      </div>
    </div>

    
    <div class="vocab-card" data-tier="tier3">
      <div class="card-head">
        <span class="word-title">Photosynthesis</span>
        <span class="tag tag-tier3">Tier 3</span>
      </div>
      <div class="single-box">
        <span class="emoji-icon">🌿 ☀️</span>
        <span class="subject-label">Science only</span>
        <span class="single-badge">Single-subject only</span>
      </div>
    </div>

    
    <div class="vocab-card" data-tier="tier3">
      <div class="card-head">
        <span class="word-title">Hypotenuse</span>
        <span class="tag tag-tier3">Tier 3</span>
      </div>
      <div class="single-box">
        <span class="emoji-icon">📐</span>
        <span class="subject-label">Math only</span>
        <span class="single-badge">Single-subject only</span>
      </div>
    </div>

  </div>

  <script>
    function setFilter(type, btn) {
      document.querySelectorAll('.filter-btn').forEach(b => b.classList.remove('active'));
      btn.classList.add('active');

      document.querySelectorAll('.vocab-card').forEach(card => {
        if (type === 'all') {
          card.classList.remove('dimmed');
          card.classList.remove('highlight');
        } else if (card.dataset.tier === type) {
          card.classList.remove('dimmed');
          card.classList.add('highlight');
        } else {
          card.classList.add('dimmed');
          card.classList.remove('highlight');
        }
      });
    }
  </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: #f8fafc;
      color: #1e293b;
      padding: 12px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      min-height: 100%;
    }

    .app-root {
      width: 100%;
      max-width: 480px;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    /* Step Selector */
    .nav-tabs {
      display: flex;
      gap: 6px;
      width: 100%;
    }
    .tab-btn {
      flex: 1;
      border: 1px solid #cbd5e1;
      background: #ffffff;
      color: #475569;
      font-size: 13px;
      font-weight: 600;
      padding: 6px 4px;
      border-radius: 8px;
      cursor: pointer;
      text-align: center;
      transition: all 0.25s ease;
      box-shadow: 0 1px 2px rgba(0,0,0,0.04);
    }
    .tab-btn.active {
      background: #0284c7;
      color: #ffffff;
      border-color: #0284c7;
      box-shadow: 0 2px 6px rgba(2, 132, 199, 0.25);
    }

    /* Cards */
    .card-box {
      background: #ffffff;
      border-radius: 12px;
      padding: 12px 14px;
      border: 1.5px solid #e2e8f0;
      box-shadow: 0 2px 5px rgba(0,0,0,0.03);
      position: relative;
      transition: border-color 0.3s ease, box-shadow 0.3s ease;
    }
    .card-box.highlight {
      border-color: #0284c7;
      box-shadow: 0 0 0 2px rgba(2, 132, 199, 0.15);
    }

    .badge {
      display: inline-flex;
      align-items: center;
      gap: 5px;
      font-size: 11px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      padding: 3px 8px;
      border-radius: 6px;
      margin-bottom: 8px;
    }
    .badge-casual {
      background: #f1f5f9;
      color: #475569;
    }
    .badge-academic {
      background: #e0f2fe;
      color: #0369a1;
    }

    .sentence {
      font-size: 15px;
      line-height: 1.6;
      font-weight: 500;
      color: #1e293b;
    }

    /* Word Pills */
    .pill {
      display: inline-block;
      padding: 2px 7px;
      border-radius: 6px;
      font-weight: 700;
      transition: all 0.3s ease;
      cursor: pointer;
    }
    /* Yellow / Amber Pair */
    .pill-yellow-light {
      background: #fef3c7;
      color: #92400e;
      border-bottom: 2px solid #f59e0b;
    }
    .pill-yellow-dark {
      background: #f59e0b;
      color: #ffffff;
      box-shadow: 0 2px 4px rgba(245, 158, 11, 0.25);
    }
    /* Blue / Cyan Pair */
    .pill-blue-light {
      background: #e0f2fe;
      color: #0369a1;
      border-bottom: 2px solid #0284c7;
    }
    .pill-blue-dark {
      background: #0284c7;
      color: #ffffff;
      box-shadow: 0 2px 4px rgba(2, 132, 199, 0.25);
    }

    .pill.dimmed {
      opacity: 0.45;
      filter: grayscale(0.5);
    }
    .pill.focused {
      transform: translateY(-1px);
      box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.3);
    }

    /* Transform Connector */
    .connector-bar {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      color: #0284c7;
      font-size: 12px;
      font-weight: 700;
      padding: 2px 0;
    }
    .connector-line {
      flex: 1;
      height: 1px;
      background: #cbd5e1;
    }
    .arrow-icon {
      background: #e0f2fe;
      color: #0284c7;
      width: 22px;
      height: 22px;
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 11px;
    }

    /* Swapped Word Pairs Bottom Bar */
    .swaps-container {
      display: flex;
      gap: 8px;
      margin-top: 2px;
    }
    .swap-chip {
      flex: 1;
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: 8px;
      padding: 6px 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
      font-size: 12px;
      cursor: pointer;
      transition: all 0.2s ease;
    }
    .swap-chip.active {
      border-color: #0284c7;
      background: #f0f9ff;
    }
    .chip-arrow {
      color: #94a3b8;
      font-size: 11px;
    }
  </style>
</head>
<body>

<div class="app-root">

  
  <div class="nav-tabs">
    <button class="tab-btn" id="btn-everyday">1. Everyday</button>
    <button class="tab-btn" id="btn-swap1">2. Swap 1</button>
    <button class="tab-btn" id="btn-swap2">3. Swap 2</button>
    <button class="tab-btn active" id="btn-academic">4. Academic</button>
  </div>

  
  <div class="card-box" id="box-casual">
    <div class="badge badge-casual">💬 Everyday Chat</div>
    <div class="sentence">
      I <span class="pill pill-yellow-light" id="w-looked">looked at</span> the chart to <span class="pill pill-blue-light" id="w-findout">find out</span> why the plant grew.
    </div>
  </div>

  
  <div class="connector-bar">
    <div class="connector-line"></div>
    <span class="arrow-icon">▼</span>
    <span>UPGRADE</span>
    <span class="arrow-icon">▼</span>
    <div class="connector-line"></div>
  </div>

  
  <div class="card-box" id="box-academic">
    <div class="badge badge-academic">🎓 Academic Writing</div>
    <div class="sentence">
      I <span class="pill pill-yellow-dark" id="w-analyzed">analyzed</span> the chart to <span class="pill pill-blue-dark" id="w-determine">determine</span> why the plant grew.
    </div>
  </div>

  
  <div class="swaps-container">
    <div class="swap-chip active" id="chip-1">
      <span class="pill pill-yellow-light" style="padding:1px 5px; font-size:11px;">looked at</span>
      <span class="chip-arrow">➔</span>
      <span class="pill pill-yellow-dark" style="padding:1px 5px; font-size:11px;">analyzed</span>
    </div>
    <div class="swap-chip active" id="chip-2">
      <span class="pill pill-blue-light" style="padding:1px 5px; font-size:11px;">find out</span>
      <span class="chip-arrow">➔</span>
      <span class="pill pill-blue-dark" style="padding:1px 5px; font-size:11px;">determine</span>
    </div>
  </div>

</div>

<script>
  const wLooked = document.getElementById('w-looked');
  const wFindout = document.getElementById('w-findout');
  const wAnalyzed = document.getElementById('w-analyzed');
  const wDetermine = document.getElementById('w-determine');

  const btnEveryday = document.getElementById('btn-everyday');
  const btnSwap1 = document.getElementById('btn-swap1');
  const btnSwap2 = document.getElementById('btn-swap2');
  const btnAcademic = document.getElementById('btn-academic');
  const allBtns = [btnEveryday, btnSwap1, btnSwap2, btnAcademic];

  const chip1 = document.getElementById('chip-1');
  const chip2 = document.getElementById('chip-2');

  function setMode(mode) {
    allBtns.forEach(b => b.classList.remove('active'));
    [wLooked, wFindout, wAnalyzed, wDetermine].forEach(el => {
      el.classList.remove('dimmed', 'focused');
    });

    if (mode === 'everyday') {
      btnEveryday.classList.add('active');
      wAnalyzed.classList.add('dimmed');
      wDetermine.classList.add('dimmed');
      chip1.classList.remove('active');
      chip2.classList.remove('active');
    } else if (mode === 'swap1') {
      btnSwap1.classList.add('active');
      wLooked.classList.add('focused');
      wAnalyzed.classList.add('focused');
      wFindout.classList.add('dimmed');
      wDetermine.classList.add('dimmed');
      chip1.classList.add('active');
      chip2.classList.remove('active');
    } else if (mode === 'swap2') {
      btnSwap2.classList.add('active');
      wFindout.classList.add('focused');
      wDetermine.classList.add('focused');
      wLooked.classList.add('dimmed');
      wAnalyzed.classList.add('dimmed');
      chip1.classList.remove('active');
      chip2.classList.add('active');
    } else {
      btnAcademic.classList.add('active');
      chip1.classList.add('active');
      chip2.classList.add('active');
    }
  }

  btnEveryday.onclick = () => setMode('everyday');
  btnSwap1.onclick = () => setMode('swap1');
  btnSwap2.onclick = () => setMode('swap2');
  btnAcademic.onclick = () => setMode('academic');

  chip1.onclick = () => setMode('swap1');
  chip2.onclick = () => setMode('swap2');
  wLooked.onclick = () => setMode('swap1');
  wAnalyzed.onclick = () => setMode('swap1');
  wFindout.onclick = () => setMode('swap2');
  wDetermine.onclick = () => setMode('swap2');
</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;
      color: #1e2945;
      background: transparent;
      padding: 12px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      min-height: 100%;
      user-select: none;
    }
    .grid-container {
      width: 100%;
      max-width: 540px;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .headers {
      display: grid;
      grid-template-columns: 1fr auto 1fr;
      gap: 8px;
      align-items: center;
      text-align: center;
    }
    .col-header {
      padding: 8px 10px;
      border-radius: 12px;
      font-weight: 700;
      font-size: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
      box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    }
    .header-left {
      background: #e8f5e9;
      border: 1px solid #c8e6c9;
      color: #2e7d32;
    }
    .header-right {
      background: #e1f5fe;
      border: 1px solid #b3e5fc;
      color: #0277bd;
    }
    .header-spacer {
      width: 28px;
    }
    .pairs-list {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .pair-row {
      display: grid;
      grid-template-columns: 1fr auto 1fr;
      gap: 8px;
      align-items: center;
      cursor: pointer;
      border-radius: 12px;
      padding: 2px;
      transition: transform 0.2s ease, opacity 0.2s ease;
    }
    .word-card {
      border-radius: 12px;
      padding: 12px 8px;
      font-size: 15px;
      font-weight: 600;
      text-align: center;
      transition: all 0.2s ease;
      display: flex;
      align-items: center;
      justify-content: center;
      min-height: 48px;
    }
    .card-left {
      background: #e8f5e9;
      border: 1px solid #c8e6c9;
      color: #1e2945;
    }
    .card-right {
      background: #e1f5fe;
      border: 1px solid #b3e5fc;
      color: #1e2945;
    }
    .arrow-container {
      width: 28px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #94a3b8;
      font-size: 18px;
      font-weight: 700;
      transition: color 0.2s ease;
    }
    .pair-row:hover .arrow-container,
    .pair-row.active .arrow-container {
      color: #0284c7;
    }
    .pair-row.active .card-left {
      background: #d4edda;
      box-shadow: 0 0 0 2px #4caf50;
    }
    .pair-row.active .card-right {
      background: #d0f0fd;
      box-shadow: 0 0 0 2px #0284c7;
    }
    .pair-row:not(.active) {
      opacity: 0.85;
    }
    .pair-row.active {
      opacity: 1;
    }
    .icon {
      font-size: 17px;
      line-height: 1;
    }
  </style>
</head>
<body>

  <div class="grid-container">
    <div class="headers">
      <div class="col-header header-left">
        <span class="icon">🛝</span> Conversational (Tier 1)
      </div>
      <div class="header-spacer"></div>
      <div class="col-header header-right">
        <span class="icon">🎓</span> Academic (Tier 2)
      </div>
    </div>

    <div class="pairs-list" id="pairsList">
      <div class="pair-row active" data-index="0">
        <div class="word-card card-left">show</div>
        <div class="arrow-container">➔</div>
        <div class="word-card card-right">demonstrate</div>
      </div>

      <div class="pair-row" data-index="1">
        <div class="word-card card-left">guess</div>
        <div class="arrow-container">➔</div>
        <div class="word-card card-right">predict</div>
      </div>

      <div class="pair-row" data-index="2">
        <div class="word-card card-left">look closely</div>
        <div class="arrow-container">➔</div>
        <div class="word-card card-right">examine</div>
      </div>

      <div class="pair-row" data-index="3">
        <div class="word-card card-left">change</div>
        <div class="arrow-container">➔</div>
        <div class="word-card card-right">modify</div>
      </div>
    </div>
  </div>

  <script>
    const rows = document.querySelectorAll('.pair-row');
    let currentIndex = 0;
    let autoInterval = null;

    function setActive(index) {
      rows.forEach((row, i) => {
        if (i === index) {
          row.classList.add('active');
        } else {
          row.classList.remove('active');
        }
      });
      currentIndex = index;
    }

    function startAutoCycle() {
      if (autoInterval) clearInterval(autoInterval);
      autoInterval = setInterval(() => {
        const nextIndex = (currentIndex + 1) % rows.length;
        setActive(nextIndex);
      }, 3000);
    }

    rows.forEach((row, index) => {
      row.addEventListener('click', () => {
        setActive(index);
        startAutoCycle();
      });
    });

    startAutoCycle();
  </script>
</body>
</html>

OGE.4.L.11

Aligned learning resources

Related diagrams