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  <title>Lincoln's Shifting Civil War Policy</title>
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          <span class="date">1861</span>
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        <span class="badge badge-blue">Initial Position</span>
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        <strong>Preserve the Union:</strong> War fought strictly to restore the nation; Lincoln avoids attacking slavery directly to hold border states.
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        <div class="connector-title">Changing Context</div>
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        <span class="badge badge-amber">Turning Point</span>
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        <strong>Battle of Antietam:</strong> Strategic Union victory stops Confederate advance and gives Lincoln the political leverage needed to issue proclamation.
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        <span class="badge badge-emerald">Emancipation</span>
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        <strong>Emancipation Proclamation:</strong> Frees enslaved people in rebel states, fundamentally shifting the moral and strategic purpose of the war.
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Analyzing Interactions Between Individuals and Historical Events

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  <title>Feedback Loop: Emancipation Proclamation</title>
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      <div id="tag-3-1" class="arrow-tag">⤹ Feedback Loop</div>

      
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        <div class="node-header">Box 1 · Leader Action</div>
        <div class="node-title">Lincoln Issues Proclamation</div>
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        <div class="node-header">Box 2 · Policy Shift</div>
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        <div class="node-header">Box 3 · New Reality</div>
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        line23.setAttribute('d', `M ${n2.cx} ${n2.bottom} L ${n3.cx} ${n3.top - 6}`);
        tag23.textContent = 'Reaction ↓';
        tag23.style.left = `${n2.cx}px`;
        tag23.style.top = `${(n2.bottom + n3.top) / 2}px`;
        tag23.style.transform = 'translate(-50%, -50%)';

        // Loop curving up left gutter
        const loopX = 14;
        line31.setAttribute('d', `M ${n3.left} ${n3.cy} C ${loopX - 8} ${n3.cy}, ${loopX - 8} ${n1.cy}, ${n1.left - 6} ${n1.cy}`);
        tag31.textContent = '⤹ Feedback';
        tag31.style.left = `${loopX + 8}px`;
        tag31.style.top = `${(n1.cy + n3.cy) / 2}px`;
        tag31.style.transform = 'translate(-50%, -50%) rotate(-90deg)';
      } else {
        // Desktop horizontal-triangular loop
        line12.setAttribute('d', `M ${n1.right} ${n1.cy} L ${n2.left - 6} ${n2.cy}`);
        tag12.textContent = 'Direct Effect →';
        tag12.style.left = `${(n1.right + n2.left) / 2}px`;
        tag12.style.top = `${n1.cy}px`;
        tag12.style.transform = 'translate(-50%, -50%)';

        line23.setAttribute('d', `M ${n2.cx} ${n2.bottom} C ${n2.cx} ${n3.cy - 10}, ${n3.right + 25} ${n3.top}, ${n3.right - 8} ${n3.top - 5}`);
        tag23.textContent = 'Consequence ↓';
        tag23.style.left = `${(n2.cx + n3.right) / 2 + 18}px`;
        tag23.style.top = `${(n2.bottom + n3.top) / 2}px`;
        tag23.style.transform = 'translate(-50%, -50%)';

        line31.setAttribute('d', `M ${n3.left + 8} ${n3.top - 2} C ${n1.left - 18} ${n3.top}, ${n1.left - 18} ${n1.bottom + 15}, ${n1.cx} ${n1.bottom + 6}`);
        tag31.textContent = '⤹ Feedback Loop';
        tag31.style.left = `${n1.left + 2}px`;
        tag31.style.top = `${(n1.bottom + n3.top) / 2 + 8}px`;
        tag31.style.transform = 'translate(-50%, -50%)';
      }
    }

    function render() {
      const data = stepsData[currentStep];

      // Tabs
      tabs.forEach((tab, i) => {
        tab.classList.toggle('active', i === currentStep);
      });

      // Nodes
      nodes.forEach((node, i) => {
        node.classList.toggle('active', i === data.activeNode);
      });

      // Lines
      lines.forEach(lineId => {
        const el = document.getElementById(lineId);
        if (lineId === data.activeLine) {
          el.classList.add('active-arrow');
          el.setAttribute('marker-end', 'url(#arrow-active)');
        } else {
          el.classList.remove('active-arrow');
          el.setAttribute('marker-end', 'url(#arrow)');
        }
      });

      // Tags
      tags.forEach(tagId => {
        const el = document.getElementById(tagId);
        el.classList.toggle('active', tagId === data.activeTag);
      });

      // Summary
      document.getElementById('summaryBadge').textContent = data.badge;
      document.getElementById('summaryText').textContent = data.text;
    }

    function setStep(idx) {
      currentStep = idx;
      render();
    }

    function nextStep() {
      currentStep = (currentStep + 1) % stepsData.length;
      render();
    }

    function startTimer() {
      if (timer) clearInterval(timer);
      timer = setInterval(nextStep, 4200);
    }

    function togglePlay() {
      isPlaying = !isPlaying;
      document.getElementById('playIcon').textContent = isPlaying ? '⏸' : '▶';
      if (isPlaying) {
        startTimer();
      } else {
        clearInterval(timer);
      }
    }

    // Dynamic layout updates
    window.addEventListener('resize', updateArrows);
    window.addEventListener('DOMContentLoaded', () => {
      render();
      updateArrows();
      startTimer();
    });

    if (window.ResizeObserver) {
      new ResizeObserver(() => updateArrows()).observe(document.getElementById('diagramArea'));
    }

    // Initial render
    render();
    setTimeout(updateArrows, 50);
  </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>Individual & Event Interaction</title>
  <style>
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      user-select: none;
      -webkit-user-select: none;
    }

    body {
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      background: #ffffff;
      color: #1e2945;
      width: 100%;
      min-height: 100%;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: space-between;
      padding: 16px;
      gap: 12px;
    }

    /* Step Cards Grid */
    .steps-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 10px;
      width: 100%;
      max-width: 620px;
    }

    .step-card {
      background: #f8fafc;
      border: 2px solid #e2e8f0;
      border-radius: 12px;
      padding: 10px 8px;
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      cursor: pointer;
      transition: all 0.3s ease;
      position: relative;
    }

    .step-card.active {
      background: #ffffff;
      border-color: #22b7ff;
      box-shadow: 0 4px 14px rgba(34, 183, 255, 0.2);
    }

    .step-badge {
      font-size: 11px;
      font-weight: 700;
      color: #64748b;
      letter-spacing: 0.5px;
      margin-bottom: 4px;
    }

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

    .step-icon {
      font-size: 26px;
      line-height: 1;
      margin-bottom: 6px;
      transition: transform 0.3s ease;
    }

    .step-card.active .step-icon {
      transform: scale(1.12);
    }

    .step-title {
      font-size: 13px;
      font-weight: 700;
      color: #1e2945;
      line-height: 1.2;
    }

    /* Central Visual Stage */
    .visual-stage {
      width: 100%;
      max-width: 620px;
      height: 170px;
      background: #f8fafc;
      border: 1px solid #e2e8f0;
      border-radius: 16px;
      position: relative;
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .stage-panel {
      position: absolute;
      inset: 0;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 10px;
      opacity: 0;
      pointer-events: none;
      transition: opacity 0.35s ease, transform 0.35s ease;
      transform: scale(0.96);
    }

    .stage-panel.active {
      opacity: 1;
      pointer-events: auto;
      transform: scale(1);
    }

    .stage-graphic {
      width: 72px;
      height: 72px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 38px;
      position: relative;
    }

    .stage-1 .stage-graphic {
      background: #e0f2fe;
      box-shadow: 0 0 0 8px rgba(224, 242, 254, 0.5);
    }

    .stage-2 .stage-graphic {
      background: #fef3c7;
      box-shadow: 0 0 0 8px rgba(254, 243, 199, 0.5);
    }

    .stage-3 .stage-graphic {
      background: #ede9fe;
      box-shadow: 0 0 0 8px rgba(237, 233, 254, 0.5);
    }

    .stage-caption {
      font-size: 14px;
      font-weight: 600;
      color: #334155;
      letter-spacing: 0.2px;
    }

    /* Flow Connectors */
    .flow-path {
      position: absolute;
      bottom: 12px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .flow-node {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #cbd5e1;
      transition: all 0.3s ease;
    }

    .flow-node.active {
      background: #22b7ff;
      width: 24px;
      border-radius: 4px;
    }

    /* Controller Bar */
    .controls {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 12px;
      width: 100%;
      max-width: 620px;
    }

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

    .btn-ctrl:active {
      background: #f1f5f9;
    }

    @media (max-width: 480px) {
      .step-title {
        font-size: 12px;
      }
      .step-icon {
        font-size: 22px;
      }
      .visual-stage {
        height: 150px;
      }
      .stage-graphic {
        width: 62px;
        height: 62px;
        font-size: 32px;
      }
    }
  </style>
</head>
<body>

  
  <div class="steps-grid" role="tablist">
    <div class="step-card active" id="card-0" onclick="selectStep(0)">
      <span class="step-badge">STEP 1</span>
      <span class="step-icon">🧭</span>
      <span class="step-title">Baseline<br>Stance</span>
    </div>

    <div class="step-card" id="card-1" onclick="selectStep(1)">
      <span class="step-badge">STEP 2</span>
      <span class="step-icon">⚡</span>
      <span class="step-title">Catalyst<br>Shift</span>
    </div>

    <div class="step-card" id="card-2" onclick="selectStep(2)">
      <span class="step-badge">STEP 3</span>
      <span class="step-icon">♟️</span>
      <span class="step-title">Adapted<br>Action</span>
    </div>
  </div>

  
  <div class="visual-stage">
    <div class="stage-panel stage-1 active" id="panel-0">
      <div class="stage-graphic">🧭</div>
      <div class="stage-caption">Initial Goal</div>
    </div>

    <div class="stage-panel stage-2" id="panel-1">
      <div class="stage-graphic">⚡</div>
      <div class="stage-caption">External Disruption</div>
    </div>

    <div class="stage-panel stage-3" id="panel-2">
      <div class="stage-graphic">♟️</div>
      <div class="stage-caption">Strategic Response</div>
    </div>

    <div class="flow-path">
      <div class="flow-node active" id="node-0" onclick="selectStep(0)"></div>
      <div class="flow-node" id="node-1" onclick="selectStep(1)"></div>
      <div class="flow-node" id="node-2" onclick="selectStep(2)"></div>
    </div>
  </div>

  
  <div class="controls">
    <button class="btn-ctrl" id="prevBtn" onclick="prevStep()">←</button>
    <button class="btn-ctrl" id="playBtn" onclick="togglePlay()">
      <span id="playIcon">⏸</span>
    </button>
    <button class="btn-ctrl" id="nextBtn" onclick="nextStep()">→</button>
  </div>

  <script>
    let currentStep = 0;
    let isPlaying = true;
    let stepTimer = null;
    const TOTAL_STEPS = 3;
    const STEP_INTERVAL = 3200;

    function renderStep(idx) {
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      for (let i = 0; i < TOTAL_STEPS; i++) {
        const card = document.getElementById(`card-${i}`);
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        const node = document.getElementById(`node-${i}`);

        if (i === idx) {
          card.classList.add('active');
          panel.classList.add('active');
          node.classList.add('active');
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          card.classList.remove('active');
          panel.classList.remove('active');
          node.classList.remove('active');
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      }
    }

    function selectStep(idx) {
      renderStep(idx);
      resetAutoPlay();
    }

    function nextStep() {
      selectStep((currentStep + 1) % TOTAL_STEPS);
    }

    function prevStep() {
      selectStep((currentStep - 1 + TOTAL_STEPS) % TOTAL_STEPS);
    }

    function togglePlay() {
      isPlaying = !isPlaying;
      document.getElementById('playIcon').textContent = isPlaying ? '⏸' : '▶';
      if (isPlaying) {
        startTimer();
      } else {
        clearInterval(stepTimer);
      }
    }

    function startTimer() {
      clearInterval(stepTimer);
      stepTimer = setInterval(() => {
        if (isPlaying) {
          renderStep((currentStep + 1) % TOTAL_STEPS);
        }
      }, STEP_INTERVAL);
    }

    function resetAutoPlay() {
      if (isPlaying) {
        startTimer();
      }
    }

    // Initialize
    startTimer();
  </script>
</body>
</html>

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta name="aspect-ratio" content="4:3">
  <style>
    * { box-sizing: border-box; margin: 0; padding: 0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
    body { background: transparent; color: #1e293b; padding: 8px; width: 100%; }

    /* Root wrapper */
    .framework-wrap {
      width: 100%;
      max-width: 660px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    /* Header controls */
    .nav-bar {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
    }
    .pill-group {
      display: flex;
      gap: 6px;
      background: #f1f5f9;
      padding: 3px;
      border-radius: 999px;
    }
    .step-pill {
      border: none;
      background: transparent;
      padding: 6px 12px;
      border-radius: 999px;
      font-size: 13px;
      font-weight: 600;
      color: #64748b;
      cursor: pointer;
      transition: all 0.25s ease;
    }
    .step-pill.active {
      background: #ffffff;
      color: #0f172a;
      box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    }

    .play-btn {
      border: 1px solid #cbd5e1;
      background: #ffffff;
      padding: 5px 12px;
      border-radius: 999px;
      font-size: 12px;
      font-weight: 600;
      color: #475569;
      cursor: pointer;
      display: flex;
      align-items: center;
      gap: 4px;
    }
    .play-btn:hover { background: #f8fafc; }

    /* 3 Stage Cards Container */
    .stages-grid {
      display: grid;
      grid-template-columns: 1fr 1fr 1fr;
      gap: 8px;
    }
    @media (max-width: 520px) {
      .stages-grid {
        grid-template-columns: 1fr;
      }
    }

    .stage-card {
      border-radius: 10px;
      padding: 10px 12px;
      border: 2px solid transparent;
      opacity: 0.55;
      transition: all 0.3s ease;
      cursor: pointer;
      background: #f8fafc;
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .stage-card.active {
      opacity: 1;
      transform: translateY(-2px);
    }

    /* Specific Stage Styles */
    .card-1.active {
      background: #eff6ff;
      border-color: #3b82f6;
      box-shadow: 0 4px 12px rgba(59, 130, 246, 0.12);
    }
    .card-2.active {
      background: #fff1f2;
      border-color: #ef4444;
      box-shadow: 0 4px 12px rgba(239, 68, 68, 0.12);
    }
    .card-3.active {
      background: #ecfdf5;
      border-color: #10b981;
      box-shadow: 0 4px 12px rgba(16, 185, 129, 0.12);
    }

    .card-badge {
      font-size: 10px;
      font-weight: 800;
      letter-spacing: 0.5px;
      text-transform: uppercase;
    }
    .card-1 .card-badge { color: #1d4ed8; }
    .card-2 .card-badge { color: #b91c1c; }
    .card-3 .card-badge { color: #047857; }

    .card-title {
      font-size: 14px;
      font-weight: 700;
      color: #0f172a;
      line-height: 1.2;
    }
    .card-status {
      font-size: 12px;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 4px;
      padding: 2px 6px;
      border-radius: 4px;
      width: fit-content;
    }
    .card-1 .card-status { background: #dbeafe; color: #1e40af; }
    .card-2 .card-status { background: #fee2e2; color: #991b1b; }
    .card-3 .card-status { background: #d1fae5; color: #065f46; }

    /* Visual Route Map Box */
    .map-box {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: 12px;
      padding: 16px 12px;
      position: relative;
    }

    .route-track {
      position: relative;
      display: flex;
      justify-content: space-between;
      align-items: center;
      max-width: 90%;
      margin: 10px auto 4px auto;
    }

    /* Background connecting line */
    .track-line-bg {
      position: absolute;
      left: 10%;
      right: 10%;
      top: 18px;
      height: 4px;
      background: #e2e8f0;
      z-index: 1;
    }

    /* Active progress line segments */
    .segment-1 {
      position: absolute;
      left: 10%;
      width: 40%;
      top: 18px;
      height: 4px;
      background: #3b82f6;
      z-index: 2;
      transition: all 0.4s ease;
    }
    .segment-2 {
      position: absolute;
      left: 50%;
      width: 40%;
      top: 18px;
      height: 4px;
      background: #10b981;
      z-index: 2;
      opacity: 0;
      border-top: 2px dashed #10b981;
      transition: all 0.4s ease;
    }

    .waypoint {
      position: relative;
      z-index: 3;
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      width: 90px;
    }
    .node-icon {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: #ffffff;
      border: 3px solid #cbd5e1;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 15px;
      transition: all 0.3s ease;
    }
    .node-label {
      font-size: 12px;
      font-weight: 700;
      margin-top: 6px;
      color: #334155;
    }
    .node-sub {
      font-size: 11px;
      font-weight: 600;
      margin-top: 2px;
      color: #64748b;
    }

    /* State-dependent route styling */
    .state-1 .node-south { border-color: #64748b; }
    .state-1 .node-north { border-color: #3b82f6; background: #eff6ff; }
    .state-1 .node-north .node-sub { color: #2563eb; }

    .state-2 .segment-1 { background: #ef4444; }
    .state-2 .node-north { border-color: #ef4444; background: #fee2e2; }
    .state-2 .node-north .node-sub { color: #dc2626; font-weight: 700; }

    .state-3 .segment-1 { background: #3b82f6; }
    .state-3 .segment-2 { opacity: 1; }
    .state-3 .node-north { border-color: #f59e0b; background: #fef3c7; }
    .state-3 .node-north .node-sub { color: #b45309; }
    .state-3 .node-canada { border-color: #10b981; background: #ecfdf5; }
    .state-3 .node-canada .node-sub { color: #059669; font-weight: 700; }

    /* Summary bar */
    .takeaway {
      background: #f8fafc;
      border-left: 3px solid #6366f1;
      padding: 8px 12px;
      border-radius: 4px;
      font-size: 12px;
      color: #334155;
      line-height: 1.4;
    }
    .takeaway strong {
      color: #1e1b4b;
    }
  </style>
</head>
<body>

<div class="framework-wrap">
  
  <div class="nav-bar">
    <div class="pill-group" role="tablist">
      <button class="step-pill active" data-step="1">1. Baseline</button>
      <button class="step-pill" data-step="2">2. Catalyst</button>
      <button class="step-pill" data-step="3">3. Adaptation</button>
    </div>
    <button class="play-btn" id="playBtn">⏸ Pause</button>
  </div>

  
  <div class="stages-grid">
    
    <div class="stage-card card-1 active" data-step="1">
      <div class="card-badge">Step 1 • Pre-1850</div>
      <div class="card-title">Northern Refuge</div>
      <div class="card-status">✓ Free State Safe Haven</div>
    </div>

    
    <div class="stage-card card-2" data-step="2">
      <div class="card-badge">Step 2 • 1850 Law</div>
      <div class="card-title">Fugitive Slave Act</div>
      <div class="card-status">⚠️ North Compromised</div>
    </div>

    
    <div class="stage-card card-3" data-step="3">
      <div class="card-badge">Step 3 • Adaptation</div>
      <div class="card-title">Extension to Canada</div>
      <div class="card-status">🛡️ Beyond US Border</div>
    </div>
  </div>

  
  <div class="map-box" id="mapBox">
    <div class="route-track state-1" id="routeTrack">
      <div class="track-line-bg"></div>
      <div class="segment-1" id="seg1"></div>
      <div class="segment-2" id="seg2"></div>

      
      <div class="waypoint">
        <div class="node-icon node-south">📍</div>
        <div class="node-label">Maryland</div>
        <div class="node-sub">Enslaved South</div>
      </div>

      
      <div class="waypoint">
        <div class="node-icon node-north" id="nodeNorth">⚖️</div>
        <div class="node-label">Pennsylvania</div>
        <div class="node-sub" id="northSub">Safe Terminus</div>
      </div>

      
      <div class="waypoint">
        <div class="node-icon node-canada">🇨🇦</div>
        <div class="node-label">Ontario</div>
        <div class="node-sub" id="canadaSub">Border Crossing</div>
      </div>
    </div>
  </div>

  
  <div class="takeaway" id="takeawayText">
    <strong>Strategic Shift:</strong> Constant Goal (Freedom) + External Shock (1850 Act) = Extended Geography (+Canada).
  </div>
</div>

<script>
  let currentStep = 1;
  let isPlaying = true;
  let timer = null;

  const pills = document.querySelectorAll('.step-pill');
  const cards = document.querySelectorAll('.stage-card');
  const routeTrack = document.getElementById('routeTrack');
  const northSub = document.getElementById('northSub');
  const canadaSub = document.getElementById('canadaSub');
  const takeawayText = document.getElementById('takeawayText');
  const playBtn = document.getElementById('playBtn');

  const subtitles = {
    1: { north: "Safe Terminus", canada: "Inactive", text: "<strong>Baseline Strategy:</strong> Escape line terminates in free Northern states where law provided safety." },
    2: { north: "🚨 Catchers Empowered", canada: "Next Refuge", text: "<strong>Catalyst Shock:</strong> 1850 Federal law strips Northern sanctuary; individual strategy must adapt." },
    3: { north: "Transit Corridor", canada: "🛡️ Free Jurisdiction", text: "<strong>Adapted Route:</strong> Harriet Tubman extends escape paths +hundreds of miles to British Canada." }
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</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; }
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      flex-direction: column;
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    .panel.active {
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    /* Visual 1: Timeline */
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      border: 1px solid #e2e8f0;
      border-left: 4px solid #0284c7;
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      color: #334155;
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    .highlight-word {
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      font-weight: 700;
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      display: flex;
      justify-content: space-between;
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      background: #ffffff;
      border: 1px solid #cbd5e1;
      border-radius: 6px;
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      font-weight: 700;
      color: #334155;
      cursor: pointer;
    }
    .nav-arrow:active {
      background: #f1f5f9;
    }
  </style>
</head>
<body>

  
  <div class="tabs-grid" role="tablist">
    <button class="tab-btn active" id="tab0" onclick="setStep(0)" role="tab" aria-selected="true">
      <span class="tab-icon">⏱️</span>
      <span class="tab-label">1. Timeline</span>
    </button>
    <button class="tab-btn" id="tab1" onclick="setStep(1)" role="tab" aria-selected="false">
      <span class="tab-icon">🔀</span>
      <span class="tab-label">2. Causality</span>
    </button>
    <button class="tab-btn" id="tab2" onclick="setStep(2)" role="tab" aria-selected="false">
      <span class="tab-icon">📢</span>
      <span class="tab-label">3. Rhetoric</span>
    </button>
    <button class="tab-btn" id="tab3" onclick="setStep(3)" role="tab" aria-selected="false">
      <span class="tab-icon">🔍</span>
      <span class="tab-label">4. Corroborate</span>
    </button>
  </div>

  
  <div class="viewer">
    
    <div class="panel active" id="panel0">
      <div>
        <div class="timeline-track">
          <div class="track-line"></div>
          <div class="track-line-progress" id="tline-fill"></div>
          <div class="node active">
            <div class="dot-node">1</div>
            <span class="node-tag">1941 Attack</span>
          </div>
          <div class="node active">
            <div class="dot-node">→</div>
            <span class="node-tag">Sequence</span>
          </div>
          <div class="node">
            <div class="dot-node">2</div>
            <span class="node-tag">Policy Shift</span>
          </div>
        </div>
      </div>
      <div class="example-box">
        <strong>Chronology:</strong> Map timestamps to verify if the historical event prompted the leader’s stance.
      </div>
    </div>

    
    <div class="panel" id="panel1">
      <div class="causal-flow">
        <div class="cause-box">Crisis Event</div>
        <span class="signal-badge">in response to</span>
        <div class="effect-box">New Policy</div>
      </div>
      <div class="example-box">
        <strong>Causal Signals:</strong> Look for words like <span class="highlight-word">consequently</span>, <span class="highlight-word">thereby</span>, or <span class="highlight-word">in response to</span>.
      </div>
    </div>

    
    <div class="panel" id="panel2">
      <div class="tone-flow">
        <div class="tone-stage">
          <span class="tone-icon">📜</span>
          <span class="tone-text">Early: Calm</span>
        </div>
        <div class="tone-stage">
          <span class="tone-icon">⚡</span>
          <span class="tone-text">Mid: Urgent</span>
        </div>
        <div class="tone-stage highlight">
          <span class="tone-icon">🎯</span>
          <span class="tone-text">Late: Resolute</span>
        </div>
      </div>
      <div class="example-box">
        <strong>Rhetoric Shift:</strong> Track how emotional urgency intensifies as public stakes escalate.
      </div>
    </div>

    
    <div class="panel" id="panel3">
      <div class="sources-grid">
        <div class="source-card match">Diary ✓<br><small>Eye-witness</small></div>
        <div class="source-card match">News ✓<br><small>Official</small></div>
        <div class="source-card match">Letter ✓<br><small>Private</small></div>
      </div>
      <div class="example-box">
        <strong>Corroboration:</strong> Cross-reference independent accounts to isolate facts from individual bias.
      </div>
    </div>

    
    <div class="nav-row">
      <button class="nav-arrow" onclick="prevStep()">← Prev</button>
      <div class="dots-list">
        <button class="nav-dot active" id="dot0" onclick="setStep(0)" aria-label="Step 1"></button>
        <button class="nav-dot" id="dot1" onclick="setStep(1)" aria-label="Step 2"></button>
        <button class="nav-dot" id="dot2" onclick="setStep(2)" aria-label="Step 3"></button>
        <button class="nav-dot" id="dot3" onclick="setStep(3)" aria-label="Step 4"></button>
      </div>
      <button class="nav-arrow" onclick="nextStep()">Next →</button>
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  </div>

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</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>
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      box-sizing: border-box;
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      -webkit-user-select: none;
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      flex-direction: column;
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      min-height: 100%;
      padding: 12px;
      overflow: hidden;
    }

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      position: relative;
      width: 100%;
      max-width: 520px;
      height: 320px;
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      position: absolute;
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</head>
<body>

  <div class="diagram-stage">
    
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    <div id="lblTop" class="flow-label label-top active">
      <span>Shapes & Triggers</span>
      <span>→</span>
    </div>

    <div id="lblBottom" class="flow-label label-bottom active">
      <span>←</span>
      <span>Pressures & Alters</span>
    </div>

    
    <div class="cards-row">
      
      <button class="node-card active" id="individualCard" aria-label="Key Individual">
        <div class="node-icon">👤</div>
        <div class="node-title">Key Individual</div>
        <div class="node-sub">Decisions & Actions</div>
      </button>

      
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        <div class="node-icon">🌍</div>
        <div class="node-title">Historical Context</div>
        <div class="node-sub">Crisis & Pressures</div>
      </button>
    </div>
  </div>

  <div class="hint-bar" id="statusHint">Two-way feedback loop in history</div>

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Identifying Sequential Steps in How a Bill Becomes a Law

Analyzing the Constitutional Amendment Process in Informational Texts

Tracing the Stages of a Supreme Court Case Appeal

Explaining the Steps of Monetary Policy and Interest Rate Adjustments

Sequencing Steps in the Naturalization Process for Citizenship

Following Steps in a Presidential Election Cycle

Mapping the Flow of Supply Chains in Economic Texts

Tracing Steps in Historical Treaty Negotiations

Identifying Cause-and-Effect Steps in Market Price Adjustments

Deconstructing Procedural Explanations in Iowa State Lawmaking

social-studies

Analyzing Processes and Procedures in Social Studies Texts (Grades 6–8)

Writing an Objective Summary With Central Ideas

Writing About How an Author Develops a Key Idea

Finding Central Ideas in Primary Source Documents

Summarizing Primary Sources Objectively

Identifying Key Steps in Historical Processes

Tracing How a Bill Becomes Law

Tracing How Interest Rates Are Raised or Lowered

Identifying Process Steps in Social Studies Texts

Summarizing Historical and Social Studies Sources

Analyzing How Ideas and Philosophies Shape Societies

Following Multistep Scientific Procedures and Experiments

Following Technical Instructions and Troubleshooting Guides

Tracing Civic and Governmental Processes

Interactions, Technical Procedures, and Historical Processes

What Does "Cite Textual Evidence" Mean in Informational Text?

Quoting From Informational Texts to Support Analysis

Citing Evidence From Science Articles

Finding Central Ideas in Science Texts

Following Multistep Procedures in Science Texts

Following Technical Instructions Precisely

Citing Evidence and Summarizing Science and Technical Texts

Following Complex Oral Instructions for Specific Tasks

Following Multi-Step Oral Instructions to Solve Problems

Identifying Key Information in Oral Directions

Tracking Conditions and Sequences in Complex Instructions

Giving Complex Oral Instructions for Specific Tasks

Organizing Oral Instructions in Clear, Sequential Steps

Using Transition Language in Oral Instructions

Giving Instructions to Answer Questions and Solve Problems

Following and Giving Instructions Under Time Pressure

Following and Giving Complex Oral Instructions

How Ideas Influence Individuals in Informational Text

How Ideas Shape Events in Informational Text

How Individuals Influence Ideas in Informational Text

How Individuals Shape Events in Informational Text

Analyzing Interactions Among Individuals, Events, and Ideas

Analyzing Interactions Among Individuals, Events, and Ideas in Informational Text

OGE.8.RI.3

Aligned learning resources

Related diagrams