<!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">
  <title>Sentence Chunking</title>
  <style>
    * { box-sizing: border-box; margin: 0; padding: 0; font-family: system-ui, -apple-system, sans-serif; }
    body {
      background: #f8fafc;
      color: #1e2945;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      padding: 16px;
      min-height: 100vh;
    }
    .wrapper {
      width: 100%;
      max-width: 620px;
      display: flex;
      flex-direction: column;
      gap: 16px;
      align-items: center;
    }
    .controls {
      display: flex;
      gap: 10px;
      flex-wrap: wrap;
      justify-content: center;
    }
    .btn {
      background: #ffffff;
      border: 1.5px solid #cbd5e1;
      color: #334155;
      padding: 8px 16px;
      border-radius: 999px;
      font-size: 14px;
      font-weight: 600;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      user-select: none;
      transition: background 0.2s, border-color 0.2s, box-shadow 0.2s;
    }
    .btn:active {
      transform: translateY(1px);
    }
    .btn.active {
      background: #0284c7;
      border-color: #0284c7;
      color: #ffffff;
      box-shadow: 0 2px 8px rgba(2, 132, 199, 0.25);
    }
    .sentence-display {
      width: 100%;
      min-height: 130px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px;
      background: #ffffff;
      border-radius: 12px;
      border: 1px solid #e2e8f0;
    }
    .chunk {
      display: flex;
      flex-direction: column;
      align-items: center;
      padding: 8px 10px;
      border-radius: 8px;
      border: 1.5px solid transparent;
      transition: all 0.25s ease;
      cursor: pointer;
      position: relative;
    }
    .chunk-text {
      font-size: 17px;
      font-weight: 500;
      color: #1e2945;
      text-align: center;
      line-height: 1.3;
    }
    .chunk-tag {
      font-size: 11px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      margin-top: 4px;
      opacity: 0;
      transform: translateY(-2px);
      transition: all 0.25s ease;
    }
    /* Chunked brackets mode */
    .chunked .c1 {
      background: #eff6ff;
      border-color: #93c5fd;
    }
    .chunked .c1 .chunk-tag {
      color: #2563eb;
      opacity: 1;
      transform: translateY(0);
    }
    .chunked .c2 {
      background: #f0fdf4;
      border-color: #86efac;
    }
    .chunked .c2 .chunk-tag {
      color: #16a34a;
      opacity: 1;
      transform: translateY(0);
    }
    .chunked .c3 {
      background: #faf5ff;
      border-color: #d8b4fe;
    }
    .chunked .c3 .chunk-tag {
      color: #9333ea;
      opacity: 1;
      transform: translateY(0);
    }

    /* Reading highlight */
    .reading .chunk.speaking {
      box-shadow: 0 0 0 3px #38bdf8;
      background: #e0f2fe;
    }

    /* Inflection wave visualizer */
    .inflection-track {
      width: 100%;
      height: 36px;
      display: flex;
      align-items: center;
      justify-content: space-around;
      padding: 0 16px;
      background: #f1f5f9;
      border-radius: 8px;
      position: relative;
    }
    .inflection-segment {
      flex: 1;
      text-align: center;
      font-size: 12px;
      font-weight: 600;
      color: #64748b;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 4px;
      transition: color 0.2s;
    }
    .inflection-segment.active {
      color: #0284c7;
      font-weight: 700;
    }
    .inflection-segment .arrow {
      font-size: 14px;
    }
  </style>
</head>
<body>
  <div class="wrapper">
    <div class="controls">
      <button id="toggleChunkBtn" class="btn active" onclick="toggleChunking()">
        <span id="chunkIcon">✦</span> Chunked
      </button>
      <button id="audioBtn" class="btn" onclick="toggleRead()">
        <span id="playIcon">▶</span> Read Aloud
      </button>
    </div>

    <div id="displayArea" class="sentence-display chunked">
      <div id="c1" class="chunk c1" onclick="focusChunk(0)">
        <span class="chunk-text">[ Prior to the revolution, ]</span>
        <span class="chunk-tag">When</span>
      </div>
      <div id="c2" class="chunk c2" onclick="focusChunk(1)">
        <span class="chunk-text">[ colonists gathered in town halls ]</span>
        <span class="chunk-tag">Who + Where</span>
      </div>
      <div id="c3" class="chunk c3" onclick="focusChunk(2)">
        <span class="chunk-text">[ to debate new taxes. ]</span>
        <span class="chunk-tag">Why</span>
      </div>
    </div>

    <div class="inflection-track">
      <div id="seg1" class="inflection-segment active">
        <span>Rising pitch</span> <span class="arrow">↗</span>
      </div>
      <div id="seg2" class="inflection-segment">
        <span>Steady pace</span> <span class="arrow">→</span>
      </div>
      <div id="seg3" class="inflection-segment">
        <span>Falling pitch</span> <span class="arrow">↘</span>
      </div>
    </div>
  </div>

  <script>
    let isChunked = true;
    let isPlaying = false;
    let playTimeout = null;
    let audioCtx = null;

    const chunks = [
      { id: 'c1', segId: 'seg1', baseFreq: 240, endFreq: 290, text: 'Prior to the revolution,', chunkedText: '[ Prior to the revolution, ]', dur: 1200, pause: 350 },
      { id: 'c2', segId: 'seg2', baseFreq: 260, endFreq: 260, text: 'colonists gathered in town halls', chunkedText: '[ colonists gathered in town halls ]', dur: 1400, pause: 250 },
      { id: 'c3', segId: 'seg3', baseFreq: 250, endFreq: 190, text: 'to debate new taxes.', chunkedText: '[ to debate new taxes. ]', dur: 1200, pause: 400 }
    ];

    function toggleChunking() {
      isChunked = !isChunked;
      const display = document.getElementById('displayArea');
      const btn = document.getElementById('toggleChunkBtn');

      if (isChunked) {
        display.classList.add('chunked');
        btn.classList.add('active');
        chunks.forEach(c => {
          document.querySelector('#' + c.id + ' .chunk-text').textContent = c.chunkedText;
        });
      } else {
        display.classList.remove('chunked');
        btn.classList.remove('active');
        chunks.forEach(c => {
          document.querySelector('#' + c.id + ' .chunk-text').textContent = c.text;
        });
      }
    }

    function initAudio() {
      if (!audioCtx) {
        audioCtx = new (window.AudioContext || window.webkitAudioContext)();
      }
    }

    function playToneSweep(startF, endF, durationMs) {
      if (!audioCtx) return;
      const osc = audioCtx.createOscillator();
      const gain = audioCtx.createGain();
      const now = audioCtx.currentTime;
      const dSec = durationMs / 1000;

      osc.type = 'sine';
      osc.frequency.setValueAtTime(startF, now);
      osc.frequency.linearRampToValueAtTime(endF, now + dSec);

      gain.gain.setValueAtTime(0.001, now);
      gain.gain.linearRampToValueAtTime(0.18, now + 0.05);
      gain.gain.setValueAtTime(0.18, now + dSec - 0.05);
      gain.gain.linearRampToValueAtTime(0.001, now + dSec);

      osc.connect(gain);
      gain.connect(audioCtx.destination);

      osc.start(now);
      osc.stop(now + dSec);
    }

    function setSpeakingChunk(idx) {
      document.querySelectorAll('.chunk').forEach((el, i) => {
        el.classList.toggle('speaking', i === idx);
      });
      document.querySelectorAll('.inflection-segment').forEach((el, i) => {
        el.classList.toggle('active', i === idx);
      });
    }

    function stopRead() {
      isPlaying = false;
      clearTimeout(playTimeout);
      document.getElementById('playIcon').textContent = '▶';
      document.getElementById('audioBtn').classList.remove('active');
      document.getElementById('displayArea').classList.remove('reading');
      setSpeakingChunk(-1);
    }

    function focusChunk(idx) {
      if (isPlaying) stopRead();
      initAudio();
      setSpeakingChunk(idx);
      playToneSweep(chunks[idx].baseFreq, chunks[idx].endFreq, 500);
      setTimeout(() => {
        if (!isPlaying) setSpeakingChunk(-1);
      }, 600);
    }

    function toggleRead() {
      if (isPlaying) {
        stopRead();
        return;
      }
      initAudio();
      isPlaying = true;
      document.getElementById('playIcon').textContent = '⏸';
      document.getElementById('audioBtn').classList.add('active');
      document.getElementById('displayArea').classList.add('reading');

      let current = 0;

      function playStep() {
        if (!isPlaying) return;
        if (current >= chunks.length) {
          stopRead();
          return;
        }

        const chunk = chunks[current];
        setSpeakingChunk(current);
        playToneSweep(chunk.baseFreq, chunk.endFreq, chunk.dur);

        playTimeout = setTimeout(() => {
          if (!isPlaying) return;
          setSpeakingChunk(-1);
          playTimeout = setTimeout(() => {
            current++;
            playStep();
          }, chunk.pause);
        }, chunk.dur);
      }

      playStep();
    }
  </script>
</body>
</html>

Reading Grade-Level Informational History Texts Independently

<!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">
  <title>Historian's Toolkit</title>
  <style>
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    body {
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      background-color: transparent;
      color: #1e293b;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      min-height: 100%;
      padding: 12px 8px;
    }

    .header {
      text-align: center;
      margin-bottom: 12px;
    }

    .title {
      font-size: 17px;
      font-weight: 800;
      color: #0f172a;
      letter-spacing: -0.01em;
    }

    .subtitle {
      font-size: 13px;
      color: #64748b;
      font-weight: 500;
      margin-top: 2px;
    }

    .grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 10px;
      width: 100%;
      max-width: 520px;
      perspective: 1000px;
    }

    .card-container {
      height: 145px;
      cursor: pointer;
      position: relative;
      user-select: none;
      -webkit-tap-highlight-color: transparent;
    }

    .card-inner {
      position: relative;
      width: 100%;
      height: 100%;
      transform-style: preserve-3d;
      transition: transform 0.45s cubic-bezier(0.4, 0, 0.2, 1);
      border-radius: 12px;
    }

    .card-container.is-flipped .card-inner {
      transform: rotateY(180deg);
    }

    .card-face {
      position: absolute;
      inset: 0;
      backface-visibility: hidden;
      -webkit-backface-visibility: hidden;
      border-radius: 12px;
      padding: 10px 12px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      border: 1.5px solid #e2e8f0;
      box-shadow: 0 2px 6px rgba(15, 23, 42, 0.05);
      background: #fdfbf7;
    }

    .card-front {
      background: #ffffff;
    }

    .card-back {
      background: #0f233a;
      color: #f8fafc;
      border-color: #1e3a5f;
      transform: rotateY(180deg);
    }

    .pillar-num {
      font-size: 11px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.06em;
      color: #0284c7;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .card-back .pillar-num {
      color: #38bdf8;
    }

    .flip-icon {
      font-size: 11px;
      color: #94a3b8;
    }

    .icon-wrap {
      font-size: 26px;
      line-height: 1;
      margin: 4px 0 2px;
      text-align: center;
    }

    .pillar-name {
      font-size: 14px;
      font-weight: 700;
      color: #0f172a;
      text-align: center;
      line-height: 1.2;
    }

    .front-sub {
      font-size: 12px;
      color: #64748b;
      text-align: center;
      font-weight: 500;
    }

    .back-content {
      display: flex;
      flex-direction: column;
      justify-content: center;
      flex: 1;
      text-align: center;
      padding: 4px 2px;
    }

    .back-question {
      font-size: 13px;
      font-weight: 600;
      color: #f1f5f9;
      line-height: 1.35;
    }

    .back-tag {
      margin-top: 6px;
      font-size: 11px;
      font-weight: 500;
      color: #94a3b8;
      background: rgba(255, 255, 255, 0.08);
      padding: 2px 8px;
      border-radius: 999px;
      align-self: center;
    }

    /* Active outline highlight instead of scale */
    .card-container:focus-visible .card-face,
    .card-container:active .card-face {
      box-shadow: 0 0 0 2px #0284c7;
    }
  </style>
</head>
<body>

  <div class="header">
    <div class="title">Historian's Toolkit</div>
    <div class="subtitle">Tap cards to flip &amp; investigate</div>
  </div>

  <div class="grid">
    
    <div class="card-container" role="button" tabindex="0" aria-label="Sourcing pillar">
      <div class="card-inner">
        <div class="card-face card-front">
          <div class="pillar-num">
            <span>Pillar 1</span>
            <span class="flip-icon">↺ Tap</span>
          </div>
          <div class="icon-wrap">🔍 👤</div>
          <div>
            <div class="pillar-name">Sourcing</div>
            <div class="front-sub">Author &amp; Purpose</div>
          </div>
        </div>
        <div class="card-face card-back">
          <div class="pillar-num">
            <span>Sourcing</span>
            <span class="flip-icon">↺</span>
          </div>
          <div class="back-content">
            <div class="back-question">Who wrote this and why?</div>
            <div class="back-tag">Point of View</div>
          </div>
        </div>
      </div>
    </div>

    
    <div class="card-container" role="button" tabindex="0" aria-label="Contextualization pillar">
      <div class="card-inner">
        <div class="card-face card-front">
          <div class="pillar-num">
            <span>Pillar 2</span>
            <span class="flip-icon">↺ Tap</span>
          </div>
          <div class="icon-wrap">⏳ 🗺️</div>
          <div>
            <div class="pillar-name">Context</div>
            <div class="front-sub">Time &amp; Place</div>
          </div>
        </div>
        <div class="card-face card-back">
          <div class="pillar-num">
            <span>Context</span>
            <span class="flip-icon">↺</span>
          </div>
          <div class="back-content">
            <div class="back-question">What was happening in the world then?</div>
            <div class="back-tag">Setting the Scene</div>
          </div>
        </div>
      </div>
    </div>

    
    <div class="card-container" role="button" tabindex="0" aria-label="Corroboration pillar">
      <div class="card-inner">
        <div class="card-face card-front">
          <div class="pillar-num">
            <span>Pillar 3</span>
            <span class="flip-icon">↺ Tap</span>
          </div>
          <div class="icon-wrap">📄 ↔️ 📄</div>
          <div>
            <div class="pillar-name">Corroboration</div>
            <div class="front-sub">Cross-Checking</div>
          </div>
        </div>
        <div class="card-face card-back">
          <div class="pillar-num">
            <span>Corroboration</span>
            <span class="flip-icon">↺</span>
          </div>
          <div class="back-content">
            <div class="back-question">Do other accounts agree?</div>
            <div class="back-tag">Compare Clues</div>
          </div>
        </div>
      </div>
    </div>

    
    <div class="card-container" role="button" tabindex="0" aria-label="Close Reading pillar">
      <div class="card-inner">
        <div class="card-face card-front">
          <div class="pillar-num">
            <span>Pillar 4</span>
            <span class="flip-icon">↺ Tap</span>
          </div>
          <div class="icon-wrap">🔎 📝</div>
          <div>
            <div class="pillar-name">Close Reading</div>
            <div class="front-sub">Words &amp; Tone</div>
          </div>
        </div>
        <div class="card-face card-back">
          <div class="pillar-num">
            <span>Close Reading</span>
            <span class="flip-icon">↺</span>
          </div>
          <div class="back-content">
            <div class="back-question">What claims &amp; words did they choose?</div>
            <div class="back-tag">Specific Evidence</div>
          </div>
        </div>
      </div>
    </div>
  </div>

  <script>
    document.querySelectorAll('.card-container').forEach(card => {
      const toggle = () => card.classList.toggle('is-flipped');
      card.addEventListener('click', toggle);
      card.addEventListener('keydown', (e) => {
        if (e.key === 'Enter' || e.key === ' ') {
          e.preventDefault();
          toggle();
        }
      });
    });
  </script>
</body>
</html>

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Timeline: American Revolution Events</title>
  <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: #0f172a;
      padding: 16px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      min-height: 100vh;
    }

    .timeline-container {
      width: 100%;
      max-width: 640px;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 20px;
    }

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

    .timeline-title {
      font-size: 16px;
      font-weight: 700;
      color: #1e293b;
      margin-bottom: 2px;
    }

    .timeline-subtitle {
      font-size: 13px;
      color: #64748b;
    }

    /* Timeline Flow */
    .timeline-track {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      position: relative;
    }

    .step-column {
      flex: 1;
      display: flex;
      flex-direction: column;
      align-items: center;
      position: relative;
      transition: opacity 0.3s ease, transform 0.3s ease;
      opacity: 0.35;
    }

    .step-column.revealed {
      opacity: 1;
    }

    .step-column.active .event-card {
      border-color: #0284c7;
      box-shadow: 0 0 0 2px #38bdf8, 0 6px 14px rgba(2, 132, 199, 0.15);
      transform: translateY(-2px);
    }

    /* Time Clue Badge */
    .clue-badge {
      background: #fef08a;
      border: 1.5px solid #eab308;
      color: #854d0e;
      font-size: 12px;
      font-weight: 700;
      padding: 5px 8px;
      border-radius: 6px;
      margin-bottom: 6px;
      text-align: center;
      white-space: nowrap;
      box-shadow: 0 1px 3px rgba(0,0,0,0.06);
      transition: background 0.3s, border-color 0.3s;
    }

    .step-column:not(.revealed) .clue-badge {
      background: #f1f5f9;
      border-color: #cbd5e1;
      color: #64748b;
    }

    /* Down arrow pointing to card */
    .down-arrow {
      font-size: 13px;
      color: #94a3b8;
      margin-bottom: 6px;
      line-height: 1;
      font-weight: 800;
    }

    .step-column.revealed .down-arrow {
      color: #0284c7;
    }

    /* Event Card */
    .event-card {
      width: 100%;
      max-width: 160px;
      background: #f8fafc;
      border: 1.5px solid #cbd5e1;
      border-radius: 10px;
      padding: 12px 8px;
      text-align: center;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 5px;
      transition: all 0.3s ease;
    }

    .step-column.revealed .event-card {
      background: #ffffff;
      border-color: #94a3b8;
    }

    .event-icon {
      font-size: 26px;
      line-height: 1.2;
    }

    .event-year {
      font-size: 17px;
      font-weight: 800;
      color: #0f172a;
      letter-spacing: -0.2px;
    }

    .event-title {
      font-size: 12px;
      font-weight: 600;
      color: #334155;
      line-height: 1.25;
    }

    /* Connecting Arrow Between Columns */
    .connector-arrow {
      display: flex;
      align-items: center;
      justify-content: center;
      color: #cbd5e1;
      padding: 0 4px;
      margin-top: 36px;
      transition: color 0.3s ease;
      flex-shrink: 0;
    }

    .connector-arrow.revealed {
      color: #0284c7;
    }

    .connector-arrow svg {
      width: 28px;
      height: 28px;
    }

    /* Controls Panel */
    .controls-panel {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 12px;
      margin-top: 4px;
      width: 100%;
    }

    .dots-nav {
      display: flex;
      gap: 8px;
      align-items: center;
    }

    .dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: #cbd5e1;
      border: none;
      cursor: pointer;
      padding: 0;
      transition: background 0.25s, transform 0.25s;
    }

    .dot.active {
      background: #0284c7;
      transform: scale(1.25);
    }

    .nav-bar {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .btn {
      background: #f8fafc;
      border: 1.5px solid #cbd5e1;
      color: #334155;
      padding: 8px 18px;
      border-radius: 6px;
      font-size: 13px;
      font-weight: 600;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      transition: background-color 0.2s, border-color 0.2s, color 0.2s;
      user-select: none;
    }

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

    .btn-primary:hover:not(:disabled) {
      background: #0369a1;
      border-color: #0369a1;
    }

    .btn:hover:not(:disabled):not(.btn-primary) {
      background: #e2e8f0;
      border-color: #94a3b8;
    }

    .btn:disabled {
      opacity: 0.4;
      cursor: not-allowed;
    }

    /* Responsive adjustments for mobile */
    @media (max-width: 480px) {
      .timeline-track {
        flex-direction: column;
        gap: 8px;
      }

      .step-column {
        width: 100%;
      }

      .event-card {
        max-width: 100%;
        flex-direction: row;
        justify-content: flex-start;
        text-align: left;
        padding: 10px 16px;
        gap: 14px;
      }

      .event-details {
        display: flex;
        flex-direction: column;
      }

      .connector-arrow {
        margin-top: 0;
        transform: rotate(90deg);
        height: 20px;
        padding: 0;
      }

      .connector-arrow svg {
        width: 20px;
        height: 20px;
      }

      .down-arrow {
        display: none;
      }
    }
  </style>
</head>
<body>

  <div class="timeline-container">
    <div class="timeline-header">
      <div class="timeline-title">Chronological Order & Time Clues</div>
      <div class="timeline-subtitle">Use clue words to track how events connect through time</div>
    </div>

    
    <div class="timeline-track">
      
      
      <div class="step-column revealed active" id="step0">
        <div class="clue-badge">"In 1773"</div>
        <div class="down-arrow">▼</div>
        <div class="event-card">
          <div class="event-icon">🫖</div>
          <div class="event-details">
            <div class="event-year">1773</div>
            <div class="event-title">Boston Tea Party</div>
          </div>
        </div>
      </div>

      
      <div class="connector-arrow" id="arrow0">
        <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round">
          <line x1="5" y1="12" x2="19" y2="12"></line>
          <polyline points="12 5 19 12 12 19"></polyline>
        </svg>
      </div>

      
      <div class="step-column" id="step1">
        <div class="clue-badge">"Two years later..."</div>
        <div class="down-arrow">▼</div>
        <div class="event-card">
          <div class="event-icon">⚔️</div>
          <div class="event-details">
            <div class="event-year">1775</div>
            <div class="event-title">Battle of Lexington</div>
          </div>
        </div>
      </div>

      
      <div class="connector-arrow" id="arrow1">
        <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round">
          <line x1="5" y1="12" x2="19" y2="12"></line>
          <polyline points="12 5 19 12 12 19"></polyline>
        </svg>
      </div>

      
      <div class="step-column" id="step2">
        <div class="clue-badge">"After the war..."</div>
        <div class="down-arrow">▼</div>
        <div class="event-card">
          <div class="event-icon">📜</div>
          <div class="event-details">
            <div class="event-year">1783</div>
            <div class="event-title">Peace Treaty</div>
          </div>
        </div>
      </div>

    </div>

    
    <div class="controls-panel">
      <div class="dots-nav">
        <button class="dot active" onclick="goToStep(0)" aria-label="Step 1"></button>
        <button class="dot" onclick="goToStep(1)" aria-label="Step 2"></button>
        <button class="dot" onclick="goToStep(2)" aria-label="Step 3"></button>
      </div>
      <div class="nav-bar">
        <button class="btn" id="prevBtn" onclick="prevStep()" disabled>◀ Previous</button>
        <button class="btn btn-primary" id="nextBtn" onclick="nextStep()">Next Clue ▶</button>
      </div>
    </div>
  </div>

  <script>
    let currentStep = 0;
    const totalSteps = 3;

    function updateView() {
      for (let i = 0; i < totalSteps; i++) {
        const col = document.getElementById('step' + i);
        const dots = document.querySelectorAll('.dot');
        
        if (i <= currentStep) {
          col.classList.add('revealed');
        } else {
          col.classList.remove('revealed');
        }

        if (i === currentStep) {
          col.classList.add('active');
          dots[i].classList.add('active');
        } else {
          col.classList.remove('active');
          dots[i].classList.remove('active');
        }
      }

      // Update connecting arrows
      for (let i = 0; i < totalSteps - 1; i++) {
        const arrow = document.getElementById('arrow' + i);
        if (currentStep > i) {
          arrow.classList.add('revealed');
        } else {
          arrow.classList.remove('revealed');
        }
      }

      document.getElementById('prevBtn').disabled = (currentStep === 0);
      
      const nextBtn = document.getElementById('nextBtn');
      if (currentStep === totalSteps - 1) {
        nextBtn.textContent = 'Completed ✓';
        nextBtn.disabled = true;
      } else {
        nextBtn.textContent = 'Next Clue ▶';
        nextBtn.disabled = false;
      }
    }

    function nextStep() {
      if (currentStep < totalSteps - 1) {
        currentStep++;
        updateView();
      }
    }

    function prevStep() {
      if (currentStep > 0) {
        currentStep--;
        updateView();
      }
    }

    function goToStep(index) {
      currentStep = index;
      updateView();
    }
  </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">
  <title>Context Clues Diagram</title>
  <style>
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      width: 100%;
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      background: #ffffff;
      color: #1e2945;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      padding: 12px;
      gap: 12px;
      user-select: none;
    }
    .sentence-box {
      width: 100%;
      max-width: 560px;
      background: #f8fafc;
      border: 1.5px solid #e2e8f0;
      border-radius: 12px;
      padding: 14px 16px;
      font-size: 16px;
      line-height: 1.6;
      text-align: center;
      color: #334155;
    }
    .word-target {
      color: #2563eb;
      font-weight: 800;
      background: #dbeafe;
      padding: 2px 6px;
      border-radius: 6px;
      border: 1px solid #93c5fd;
      display: inline-block;
    }
    .clue-phrase {
      border-radius: 4px;
      padding: 1px 4px;
      transition: all 0.25s ease;
      cursor: pointer;
    }
    .clue-phrase.active-1 {
      background: #fef08a;
      color: #854d0e;
      font-weight: 700;
    }
    .clue-phrase.active-2 {
      background: #fed7aa;
      color: #9a3412;
      font-weight: 700;
    }
    .clue-phrase.active-3 {
      background: #e9d5ff;
      color: #6b21a8;
      font-weight: 700;
    }

    .clues-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 8px;
      width: 100%;
      max-width: 560px;
    }
    .clue-card {
      background: #ffffff;
      border: 1.5px solid #e2e8f0;
      border-radius: 10px;
      padding: 10px 8px;
      text-align: center;
      cursor: pointer;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 4px;
      transition: box-shadow 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
    }
    .clue-icon {
      font-size: 18px;
    }
    .clue-text {
      font-size: 13px;
      font-weight: 700;
      color: #475569;
    }
    .clue-card.c1.active {
      border-color: #eab308;
      background: #fefce8;
      box-shadow: 0 0 0 2px #fef08a;
    }
    .clue-card.c1.active .clue-text { color: #854d0e; }
    
    .clue-card.c2.active {
      border-color: #f97316;
      background: #fff7ed;
      box-shadow: 0 0 0 2px #fed7aa;
    }
    .clue-card.c2.active .clue-text { color: #9a3412; }

    .clue-card.c3.active {
      border-color: #a855f7;
      background: #faf5ff;
      box-shadow: 0 0 0 2px #e9d5ff;
    }
    .clue-card.c3.active .clue-text { color: #6b21a8; }

    .definition-box {
      width: 100%;
      max-width: 560px;
      background: #f0fdf4;
      border: 1.5px solid #86efac;
      border-radius: 12px;
      padding: 12px 16px;
      text-align: center;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
    }
    .def-badge {
      background: #16a34a;
      color: #ffffff;
      font-size: 11px;
      font-weight: 800;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      padding: 3px 8px;
      border-radius: 20px;
    }
    .def-text {
      font-size: 15px;
      font-weight: 700;
      color: #14532d;
    }

    .stepper-nav {
      display: flex;
      align-items: center;
      gap: 8px;
      margin-top: 2px;
    }
    .step-btn {
      background: #f1f5f9;
      border: 1px solid #cbd5e1;
      border-radius: 6px;
      padding: 4px 10px;
      font-size: 12px;
      font-weight: 600;
      color: #475569;
      cursor: pointer;
    }
    .step-btn:hover {
      background: #e2e8f0;
    }
    .indicator-dots {
      display: flex;
      gap: 6px;
      margin: 0 4px;
    }
    .dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #cbd5e1;
      cursor: pointer;
      transition: background-color 0.2s ease;
    }
    .dot.active {
      background: #2563eb;
    }

    @media (max-width: 440px) {
      .sentence-box { font-size: 14px; padding: 10px 12px; }
      .clue-text { font-size: 11px; }
      .def-text { font-size: 13px; }
      .definition-box { padding: 10px 12px; }
    }
  </style>
</head>
<body>

  
  <div class="sentence-box">
    The young <span class="word-target">apprentice</span> 
    <span class="clue-phrase" id="phrase1" onclick="setStep(0)">worked alongside</span> the 
    <span class="clue-phrase" id="phrase2" onclick="setStep(1)">master baker</span> every morning 
    <span class="clue-phrase" id="phrase3" onclick="setStep(2)">to learn</span> how to bake bread.
  </div>

  
  <div class="clues-grid">
    <div class="clue-card c1 active" id="card1" onclick="setStep(0)">
      <span class="clue-icon">🔍</span>
      <span class="clue-text">worked alongside</span>
    </div>
    <div class="clue-card c2 active" id="card2" onclick="setStep(1)">
      <span class="clue-icon">🔍</span>
      <span class="clue-text">master baker</span>
    </div>
    <div class="clue-card c3 active" id="card3" onclick="setStep(2)">
      <span class="clue-icon">🔍</span>
      <span class="clue-text">to learn</span>
    </div>
  </div>

  
  <div class="definition-box">
    <span class="def-badge">Meaning</span>
    <span class="def-text">A learner training for a job.</span>
  </div>

  
  <div class="stepper-nav">
    <button class="step-btn" onclick="prevStep()">◀ Clue</button>
    <div class="indicator-dots">
      <span class="dot" id="dot0" onclick="setStep(0)"></span>
      <span class="dot" id="dot1" onclick="setStep(1)"></span>
      <span class="dot" id="dot2" onclick="setStep(2)"></span>
      <span class="dot active" id="dot3" onclick="setStep(3)"></span>
    </div>
    <button class="step-btn" onclick="nextStep()">Next ▶</button>
  </div>

  <script>
    let currentStep = 3; // 0: clue 1, 1: clue 2, 2: clue 3, 3: show all

    const cards = [
      document.getElementById('card1'),
      document.getElementById('card2'),
      document.getElementById('card3')
    ];
    const phrases = [
      document.getElementById('phrase1'),
      document.getElementById('phrase2'),
      document.getElementById('phrase3')
    ];
    const dots = [
      document.getElementById('dot0'),
      document.getElementById('dot1'),
      document.getElementById('dot2'),
      document.getElementById('dot3')
    ];

    function updateView() {
      cards.forEach((card, i) => {
        const isActive = currentStep === 3 || currentStep === i;
        card.classList.toggle('active', isActive);
      });

      phrases.forEach((phrase, i) => {
        const cls = `active-${i + 1}`;
        if (currentStep === 3 || currentStep === i) {
          phrase.classList.add(cls);
        } else {
          phrase.classList.remove(cls);
        }
      });

      dots.forEach((dot, i) => {
        dot.classList.toggle('active', currentStep === i);
      });
    }

    function setStep(step) {
      currentStep = step;
      updateView();
    }

    function nextStep() {
      currentStep = (currentStep + 1) % 4;
      updateView();
    }

    function prevStep() {
      currentStep = (currentStep - 1 + 4) % 4;
      updateView();
    }

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

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Reading Stamina Cycle</title>
  <style>
    * { box-sizing: border-box; margin: 0; padding: 0; }
    
    html, body {
      width: 100%;
      min-height: 100%;
      background: #f8fafc;
      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: 16px 12px;
      gap: 14px;
      user-select: none;
    }

    /* Flow Header Bar */
    .flow-indicator {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-size: 13px;
      font-weight: 700;
      color: #64748b;
      background: #ffffff;
      padding: 6px 14px;
      border-radius: 20px;
      border: 1px solid #e2e8f0;
      box-shadow: 0 1px 3px rgba(0,0,0,0.03);
    }

    .flow-arrow {
      color: #0284c7;
      font-weight: bold;
    }

    /* Steps Flow Grid */
    .cycle-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 12px;
      width: 100%;
      max-width: 620px;
    }

    .step-card {
      background: #ffffff;
      border: 2px solid #e2e8f0;
      border-radius: 14px;
      padding: 14px 10px;
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      cursor: pointer;
      transition: border-color 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease;
      position: relative;
    }

    .step-card:hover {
      border-color: #93c5fd;
      background: #f8fafc;
    }

    .step-card.active {
      border-color: #0284c7;
      background: #f0f9ff;
      box-shadow: 0 4px 14px rgba(2, 132, 199, 0.18);
    }

    .badge-num {
      width: 24px;
      height: 24px;
      border-radius: 50%;
      background: #e2e8f0;
      color: #64748b;
      font-size: 12px;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 8px;
      transition: background-color 0.25s ease, color 0.25s ease;
    }

    .step-card.active .badge-num {
      background: #0284c7;
      color: #ffffff;
    }

    .avatar {
      font-size: 32px;
      line-height: 1;
      margin-bottom: 8px;
      height: 36px;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .step-text {
      width: 100%;
      display: flex;
      flex-direction: column;
      gap: 4px;
      align-items: center;
    }

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

    .action-badge {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 4px;
      font-size: 11px;
      font-weight: 600;
      padding: 4px 8px;
      border-radius: 8px;
      background: #f1f5f9;
      color: #475569;
      width: 100%;
      line-height: 1.3;
    }

    .step-card.active .action-badge.neutral {
      background: #e0f2fe;
      color: #0369a1;
    }

    .step-card.active .action-badge.good {
      background: #dcfce7;
      color: #15803d;
    }

    .step-card.active .action-badge.retry {
      background: #fef3c7;
      color: #b45309;
    }

    /* Controls */
    .controls {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 14px;
    }

    .ctrl-btn {
      background: #ffffff;
      border: 1px solid #cbd5e1;
      color: #334155;
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 13px;
      font-weight: 600;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      box-shadow: 0 1px 3px rgba(0,0,0,0.05);
      transition: background 0.2s ease, border-color 0.2s ease;
    }

    .ctrl-btn:hover {
      background: #f1f5f9;
      border-color: #94a3b8;
    }

    .dots-nav {
      display: flex;
      gap: 8px;
      align-items: center;
    }

    .dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: #cbd5e1;
      cursor: pointer;
      transition: background-color 0.3s ease, transform 0.2s ease;
    }

    .dot.active {
      background: #0284c7;
      transform: scale(1.2);
    }

    @media (max-width: 480px) {
      .cycle-grid {
        grid-template-columns: 1fr;
        gap: 8px;
        max-width: 320px;
      }
      .step-card {
        padding: 10px 12px;
        flex-direction: row;
        text-align: left;
        gap: 10px;
      }
      .badge-num {
        margin-bottom: 0;
        flex-shrink: 0;
      }
      .avatar {
        font-size: 26px;
        margin-bottom: 0;
        height: auto;
        flex-shrink: 0;
      }
      .step-text {
        align-items: flex-start;
      }
      .action-badge {
        width: auto;
        display: inline-flex;
      }
    }
  </style>
</head>
<body>

  <div class="flow-indicator">
    <span>Read</span>
    <span class="flow-arrow">→</span>
    <span>Pause & Ask</span>
    <span class="flow-arrow">→</span>
    <span>Check & Continue 🔁</span>
  </div>

  <div class="cycle-grid">
    
    <div class="step-card active" data-step="0">
      <div class="badge-num">1</div>
      <div class="avatar">📖</div>
      <div class="step-text">
        <div class="step-title">Read 1 Section</div>
        <div class="action-badge neutral">1 chunk at a time</div>
      </div>
    </div>

    
    <div class="step-card" data-step="1">
      <div class="badge-num">2</div>
      <div class="avatar">🤔</div>
      <div class="step-text">
        <div class="step-title">Pause & Ask</div>
        <div class="action-badge neutral">"What was big point?"</div>
      </div>
    </div>

    
    <div class="step-card" data-step="2">
      <div class="badge-num">3</div>
      <div class="avatar">💡</div>
      <div class="step-text">
        <div class="step-title">Check Stamina</div>
        <div class="action-badge good">✓ Can explain? Next!</div>
        <div class="action-badge retry">↻ Confused? Reread 2 lines</div>
      </div>
    </div>
  </div>

  <div class="controls">
    <button class="ctrl-btn" id="playBtn" type="button">
      <span id="playIcon">⏸</span> <span id="playText">Pause</span>
    </button>
    <div class="dots-nav">
      <div class="dot active" data-step="0" aria-label="Step 1"></div>
      <div class="dot" data-step="1" aria-label="Step 2"></div>
      <div class="dot" data-step="2" aria-label="Step 3"></div>
    </div>
  </div>

  <script>
    // Safe DOM helper utilities
    const $ = (sel) => document.querySelector(sel);
    const $$ = (sel) => document.querySelectorAll(sel);
    const onTap = (el, fn) => {
      if (!el) return;
      el.addEventListener('click', fn);
    };

    const cards = $$('.step-card');
    const dots = $$('.dot');
    const playBtn = $('#playBtn');
    const playIcon = $('#playIcon');
    const playText = $('#playText');

    let current = 0;
    let timer = null;
    let isPlaying = true;

    function setStep(idx) {
      current = (idx + cards.length) % cards.length;
      cards.forEach((c, i) => c.classList.toggle('active', i === current));
      dots.forEach((d, i) => d.classList.toggle('active', i === current));
    }

    function startAuto() {
      stopAuto();
      isPlaying = true;
      if (playIcon) playIcon.textContent = '⏸';
      if (playText) playText.textContent = 'Pause';
      timer = setInterval(() => {
        setStep(current + 1);
      }, 3000);
    }

    function stopAuto() {
      isPlaying = false;
      if (timer) {
        clearInterval(timer);
        timer = null;
      }
      if (playIcon) playIcon.textContent = '▶';
      if (playText) playText.textContent = 'Play';
    }

    cards.forEach((card, idx) => {
      onTap(card, () => {
        setStep(idx);
        stopAuto();
      });
    });

    dots.forEach((dot, idx) => {
      onTap(dot, () => {
        setStep(idx);
        stopAuto();
      });
    });

    onTap(playBtn, () => {
      if (isPlaying) {
        stopAuto();
      } else {
        setStep(current + 1);
        startAuto();
      }
    });

    // Start auto loop
    startAuto();
  </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">
  <title>Nonfiction Text Features</title>
  <style>
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    body {
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      background: #f4f4f6;
      color: #1e2945;
      padding: 10px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      user-select: none;
    }

    /* Top Selector Tabs */
    .feature-tabs {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      justify-content: center;
    }

    .tab-btn {
      background: #ffffff;
      border: 1px solid #d1d5db;
      border-radius: 20px;
      padding: 5px 12px;
      font-size: 13px;
      font-weight: 600;
      color: #1e2945;
      cursor: pointer;
      display: 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;
      box-shadow: 0 2px 6px rgba(30, 41, 69, 0.25);
    }

    .tab-num {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 18px;
      height: 18px;
      border-radius: 50%;
      background: #22b7ff;
      color: #ffffff;
      font-size: 11px;
      font-weight: 700;
    }

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

    /* Textbook Page Mockup */
    .page-mockup {
      background: #fffdf9;
      border: 1px solid #e2ded4;
      border-radius: 8px;
      padding: 12px 14px;
      position: relative;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    /* Feature Target Wrappers */
    .feature-target {
      position: relative;
      cursor: pointer;
      border-radius: 6px;
      transition: background 0.2s, box-shadow 0.2s;
    }

    .feature-target:hover {
      box-shadow: 0 0 0 2px #22b7ff;
    }

    .feature-target.active {
      box-shadow: 0 0 0 2px #0284c7, 0 0 10px rgba(34, 183, 255, 0.35);
      background: rgba(34, 183, 255, 0.08);
    }

    /* Pulsing Badge */
    .badge {
      position: absolute;
      top: -6px;
      right: -6px;
      width: 20px;
      height: 20px;
      border-radius: 50%;
      background: #22b7ff;
      color: #ffffff;
      font-size: 11px;
      font-weight: bold;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 0 0 0 rgba(34, 183, 255, 0.7);
      animation: pulse 2.5s infinite;
      z-index: 5;
    }

    .feature-target.active .badge {
      background: #0284c7;
      animation: none;
      box-shadow: 0 0 0 3px #bae6fd;
    }

    @keyframes pulse {
      0% { box-shadow: 0 0 0 0 rgba(34, 183, 255, 0.7); }
      70% { box-shadow: 0 0 0 7px rgba(34, 183, 255, 0); }
      100% { box-shadow: 0 0 0 0 rgba(34, 183, 255, 0); }
    }

    /* Main Heading */
    .main-heading-block {
      padding: 6px 10px;
      border-bottom: 2px solid #e5e1d8;
      text-align: center;
    }

    .main-title {
      font-size: 17px;
      font-weight: 800;
      color: #1e2945;
      letter-spacing: -0.2px;
    }

    /* Content Grid */
    .content-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 10px;
    }

    @media (max-width: 440px) {
      .content-grid {
        grid-template-columns: 1fr;
      }
    }

    /* Left Column: Text Section */
    .text-column {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .subheading-block {
      padding: 4px 6px;
    }

    .sub-title {
      font-size: 14px;
      font-weight: 700;
      color: #7c2d12;
    }

    /* Simulated Body Text */
    .fake-text {
      display: flex;
      flex-direction: column;
      gap: 4px;
      padding: 2px 6px;
    }

    .fake-line {
      height: 6px;
      background: #e2ded4;
      border-radius: 3px;
    }

    .fake-line.full { width: 100%; }
    .fake-line.w-90 { width: 90%; }
    .fake-line.w-80 { width: 80%; }
    .fake-line.w-60 { width: 60%; }

    /* Right Column: Visuals */
    .media-column {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    /* Map Box */
    .map-block {
      padding: 6px 8px;
      background: #f1f5f9;
      border: 1px solid #cbd5e1;
      border-radius: 6px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .map-graphic {
      width: 44px;
      height: 44px;
      background: #e0f2fe;
      border: 1px solid #93c5fd;
      border-radius: 4px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      flex-shrink: 0;
    }

    .map-label {
      display: flex;
      flex-direction: column;
    }

    .map-label-main {
      font-size: 12px;
      font-weight: 700;
      color: #1e2945;
    }

    .map-label-sub {
      font-size: 11px;
      color: #64748b;
    }

    /* Photo & Caption Box */
    .caption-block {
      padding: 6px 8px;
      background: #f8fafc;
      border: 1px solid #e2e8f0;
      border-radius: 6px;
      display: flex;
      flex-direction: column;
      gap: 4px;
    }

    .photo-area {
      display: flex;
      align-items: center;
      justify-content: center;
      background: #e2e8f0;
      border-radius: 4px;
      height: 38px;
      font-size: 22px;
    }

    .caption-text {
      font-size: 11px;
      font-style: italic;
      color: #475569;
      text-align: center;
      line-height: 1.2;
    }

    /* Info Callout Card */
    .explanation-card {
      background: #ffffff;
      border: 1px solid #bae6fd;
      border-left: 4px solid #0284c7;
      border-radius: 6px;
      padding: 8px 12px;
      display: flex;
      align-items: center;
      gap: 10px;
      min-height: 48px;
      box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    }

    .exp-icon {
      font-size: 20px;
      flex-shrink: 0;
    }

    .exp-content {
      display: flex;
      flex-direction: column;
      gap: 2px;
    }

    .exp-title {
      font-size: 12px;
      font-weight: 700;
      color: #0284c7;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    .exp-desc {
      font-size: 13px;
      font-weight: 600;
      color: #1e2945;
      line-height: 1.3;
    }
  </style>
</head>
<body>

  
  <div class="feature-tabs" role="tablist">
    <button class="tab-btn active" id="tab0" onclick="selectFeature(0)" role="tab">
      <span class="tab-num">1</span> Heading
    </button>
    <button class="tab-btn" id="tab1" onclick="selectFeature(1)" role="tab">
      <span class="tab-num">2</span> Subheading
    </button>
    <button class="tab-btn" id="tab2" onclick="selectFeature(2)" role="tab">
      <span class="tab-num">3</span> Map
    </button>
    <button class="tab-btn" id="tab3" onclick="selectFeature(3)" role="tab">
      <span class="tab-num">4</span> Caption
    </button>
  </div>

  
  <div class="page-mockup">
    
    
    <div class="feature-target main-heading-block active" id="feat0" onclick="selectFeature(0)">
      <div class="badge">1</div>
      <div class="main-title">Life in Colonial Williamsburg</div>
    </div>

    
    <div class="content-grid">
      
      
      <div class="text-column">
        
        <div class="feature-target subheading-block" id="feat1" onclick="selectFeature(1)">
          <div class="badge">2</div>
          <div class="sub-title">The Blacksmith Shop</div>
        </div>

        <div class="fake-text">
          <div class="fake-line full"></div>
          <div class="fake-line w-90"></div>
          <div class="fake-line w-80"></div>
          <div class="fake-line w-60"></div>
        </div>
      </div>

      
      <div class="media-column">
        
        <div class="feature-target map-block" id="feat2" onclick="selectFeature(2)">
          <div class="badge">3</div>
          <div class="map-graphic">🗺️</div>
          <div class="map-label">
            <span class="map-label-main">13 Colonies</span>
            <span class="map-label-sub">Virginia Colony</span>
          </div>
        </div>

        
        <div class="feature-target caption-block" id="feat3" onclick="selectFeature(3)">
          <div class="badge">4</div>
          <div class="photo-area">🔨 🪵</div>
          <div class="caption-text">Tools used to shape hot iron</div>
        </div>
      </div>

    </div>

  </div>

  
  <div class="explanation-card">
    <div class="exp-icon" id="expIcon">📖</div>
    <div class="exp-content">
      <div class="exp-title" id="expTitle">Main Heading</div>
      <div class="exp-desc" id="expDesc">Tells the big topic of the entire text.</div>
    </div>
  </div>

  <script>
    const features = [
      {
        title: "Main Heading",
        icon: "📖",
        desc: "Tells the big topic of the entire text."
      },
      {
        title: "Subheading",
        icon: "📌",
        desc: "Tells the specific focus of this section."
      },
      {
        title: "Map & Graphic",
        icon: "🗺️",
        desc: "Shows where historical events happened."
      },
      {
        title: "Caption",
        icon: "💬",
        desc: "Explains what an image or diagram shows."
      }
    ];

    let currentIndex = 0;

    function selectFeature(idx) {
      currentIndex = idx;
      
      // Update tabs
      for (let i = 0; i < 4; i++) {
        const tab = document.getElementById('tab' + i);
        const feat = document.getElementById('feat' + i);
        if (i === idx) {
          tab.classList.add('active');
          feat.classList.add('active');
        } else {
          tab.classList.remove('active');
          feat.classList.remove('active');
        }
      }

      // Update description card
      const data = features[idx];
      document.getElementById('expIcon').textContent = data.icon;
      document.getElementById('expTitle').textContent = data.title;
      document.getElementById('expDesc').textContent = data.desc;
    }
  </script>
</body>
</html>

OGE.4.RI.10

Aligned learning resources

Related diagrams