<!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>Three-Reads Protocol</title>
  <style>
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    body {
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      background: #f8fafc;
      color: #1e293b;
      padding: 16px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      min-height: 100%;
    }

    .diagram-grid {
      width: 100%;
      max-width: 620px;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .cards-row {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 12px;
    }

    @media (max-width: 480px) {
      .cards-row {
        grid-template-columns: 1fr;
      }
    }

    .step-card {
      background: #ffffff;
      border-radius: 12px;
      padding: 14px 10px;
      text-align: center;
      box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
      border: 2px solid transparent;
      cursor: pointer;
      user-select: none;
      transition: box-shadow 0.25s ease, border-color 0.25s ease, background-color 0.25s ease;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 6px;
    }

    .step-card.active {
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
    }

    .step-card[data-step="1"].active {
      border-color: #3b82f6;
      background: #eff6ff;
    }

    .step-card[data-step="2"].active {
      border-color: #f59e0b;
      background: #fffbeb;
    }

    .step-card[data-step="3"].active {
      border-color: #10b981;
      background: #ecfdf5;
    }

    .icon-badge {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
    }

    .badge-1 { background: #dbeafe; color: #1d4ed8; }
    .badge-2 { background: #fef3c7; color: #b45309; }
    .badge-3 { background: #d1fae5; color: #047857; }

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

    .step-desc {
      font-size: 12px;
      color: #64748b;
      font-weight: 500;
    }

    /* Clue inspection panel */
    .inspect-box {
      background: #ffffff;
      border-radius: 12px;
      padding: 14px 16px;
      box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
      border: 1px solid #e2e8f0;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .inspect-header {
      font-size: 12px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .story-text {
      font-size: 15px;
      line-height: 1.5;
      color: #334155;
    }

    .hl-story {
      padding: 2px 4px;
      border-radius: 4px;
      transition: background 0.3s ease, color 0.3s ease;
    }

    .active-1 .hl-story { background: #bfdbfe; font-weight: 600; color: #1e3a8a; }
    .active-2 .hl-quant { background: #fde68a; font-weight: 700; color: #78350f; padding: 2px 4px; border-radius: 4px; }
    .active-3 .hl-goal { background: #a7f3d0; font-weight: 700; color: #064e3b; padding: 2px 4px; border-radius: 4px; }

    /* Interactive Stepper Navigation */
    .controls {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 12px;
      margin-top: 4px;
    }

    .btn-step {
      background: #ffffff;
      border: 1px solid #cbd5e1;
      border-radius: 8px;
      padding: 6px 14px;
      font-size: 13px;
      font-weight: 600;
      color: #334155;
      cursor: pointer;
      user-select: none;
    }

    .btn-step:hover {
      background: #f1f5f9;
    }

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

    .dot-btn {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: #cbd5e1;
      border: none;
      padding: 0;
      cursor: pointer;
      transition: background-color 0.2s ease, transform 0.2s ease;
    }

    .dot-btn.active {
      background: #3b82f6;
      transform: scale(1.25);
    }
  </style>
</head>
<body>

  <div class="diagram-grid" id="diagram">
    
    <div class="cards-row">
      <div class="step-card active" data-step="1" onclick="setStep(1)">
        <div class="icon-badge badge-1">📖</div>
        <div class="step-title" style="color: #2563eb;">1st Read</div>
        <div class="step-desc">Story Gist</div>
      </div>

      <div class="step-card" data-step="2" onclick="setStep(2)">
        <div class="icon-badge badge-2">⚖️</div>
        <div class="step-title" style="color: #d97706;">2nd Read</div>
        <div class="step-desc">Quantities</div>
      </div>

      <div class="step-card" data-step="3" onclick="setStep(3)">
        <div class="icon-badge badge-3">🎯</div>
        <div class="step-title" style="color: #059669;">3rd Read</div>
        <div class="step-desc">Goal &amp; Plan</div>
      </div>
    </div>

    
    <div class="inspect-box active-1" id="inspectBox">
      <div class="inspect-header" id="inspectHeader" style="color: #2563eb;">
        <span>🔍 Focus: Understand the Context</span>
      </div>
      <div class="story-text">
        <span class="hl-story">Leo packed</span>
        <span class="hl-quant">8 boxes</span> with
        <span class="hl-quant">4 crystals</span> each.
        <span class="hl-goal">How many crystals in all?</span>
      </div>
    </div>

    
    <div class="controls">
      <button class="btn-step" type="button" onclick="prevStep()">◀ Prev</button>
      <div class="dots-nav">
        <button class="dot-btn active" type="button" aria-label="Step 1" onclick="setStep(1)"></button>
        <button class="dot-btn" type="button" aria-label="Step 2" onclick="setStep(2)"></button>
        <button class="dot-btn" type="button" aria-label="Step 3" onclick="setStep(3)"></button>
      </div>
      <button class="btn-step" type="button" onclick="nextStep()">Next ▶</button>
    </div>
  </div>

  <script>
    let currentStep = 1;
    const totalSteps = 3;

    const headers = [
      { text: "🔍 Focus: Understand the Context", color: "#2563eb" },
      { text: "🔍 Focus: Find Numbers & Units", color: "#d97706" },
      { text: "🔍 Focus: Target Question & Model", color: "#059669" }
    ];

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

    function nextStep() {
      currentStep = currentStep >= totalSteps ? 1 : currentStep + 1;
      updateUI();
    }

    function prevStep() {
      currentStep = currentStep <= 1 ? totalSteps : currentStep - 1;
      updateUI();
    }

    function updateUI() {
      // Update Cards
      const cards = document.querySelectorAll('.step-card');
      cards.forEach((card, idx) => {
        if (idx + 1 === currentStep) {
          card.classList.add('active');
        } else {
          card.classList.remove('active');
        }
      });

      // Update Preview Box classes & Header
      const box = document.getElementById('inspectBox');
      box.className = 'inspect-box active-' + currentStep;

      const header = document.getElementById('inspectHeader');
      header.textContent = headers[currentStep - 1].text;
      header.style.color = headers[currentStep - 1].color;

      // Update Dots
      const dots = document.querySelectorAll('.dot-btn');
      dots.forEach((dot, idx) => {
        if (idx + 1 === currentStep) {
          dot.classList.add('active');
        } else {
          dot.classList.remove('active');
        }
      });
    }
  </script>
</body>
</html>

Analyzing Given Information in Word Problems

<!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: #1e293b;
      background: transparent;
      padding: 12px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      min-height: 100%;
      user-select: none;
    }

    .diagram-stage {
      width: 100%;
      max-width: 580px;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    /* Controls */
    .stepper-nav {
      display: flex;
      justify-content: center;
      gap: 8px;
      flex-wrap: wrap;
    }

    .step-btn {
      background: #f1f5f9;
      border: 1px solid #cbd5e1;
      border-radius: 20px;
      padding: 6px 14px;
      font-size: 13px;
      font-weight: 600;
      color: #475569;
      cursor: pointer;
      transition: all 0.25s ease;
    }

    .step-btn.active {
      background: #3b82f6;
      color: #ffffff;
      border-color: #3b82f6;
      box-shadow: 0 2px 6px rgba(59, 130, 246, 0.35);
    }

    /* Bars Container */
    .model-area {
      display: flex;
      flex-direction: column;
      gap: 12px;
      background: #f8fafc;
      border: 1px solid #e2e8f0;
      border-radius: 12px;
      padding: 18px 14px 14px;
      position: relative;
    }

    /* Strip Row */
    .bar-row {
      display: flex;
      flex-direction: column;
      gap: 4px;
      width: 100%;
    }

    .bar-label-top {
      font-size: 12px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      color: #64748b;
      display: flex;
      justify-content: space-between;
    }

    /* Bar Styling */
    .bar-full {
      width: 100%;
      height: 44px;
      background: #e2e8f0;
      border: 2px solid #cbd5e1;
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 15px;
      font-weight: 700;
      color: #1e293b;
      transition: opacity 0.3s ease;
    }

    .bottom-bar-wrap {
      width: 100%;
      display: flex;
      height: 52px;
      gap: 4px;
    }

    /* Part 1: Jar */
    .part-jar {
      width: 25%;
      background: #fef3c7;
      border: 2px solid #f59e0b;
      border-radius: 8px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 13px;
      color: #92400e;
      transition: all 0.3s ease;
    }

    /* Part 2: Shared Group */
    .part-shared {
      width: 75%;
      border: 2px dashed #93c5fd;
      background: #eff6ff;
      border-radius: 8px;
      display: flex;
      padding: 3px;
      gap: 4px;
      transition: all 0.3s ease;
      position: relative;
    }

    .sub-block {
      flex: 1;
      background: #3b82f6;
      border-radius: 5px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      color: #ffffff;
      font-weight: 700;
      font-size: 13px;
      line-height: 1.2;
      transition: all 0.3s ease;
    }

    .sub-block .sub-name {
      font-size: 10px;
      opacity: 0.85;
      font-weight: 600;
    }

    /* Bracket & Step Explanations */
    .step-callouts {
      display: flex;
      flex-direction: column;
      gap: 8px;
      margin-top: 4px;
    }

    .step-card {
      display: flex;
      align-items: center;
      gap: 10px;
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-left: 4px solid #94a3b8;
      border-radius: 6px;
      padding: 8px 12px;
      font-size: 13px;
      transition: all 0.3s ease;
      opacity: 0.45;
    }

    .step-card.active {
      opacity: 1;
      border-color: #cbd5e1;
      box-shadow: 0 2px 5px rgba(0,0,0,0.04);
    }

    .step-card.step1-card.active {
      border-left-color: #f59e0b;
      background: #fffbeb;
    }

    .step-card.step2-card.active {
      border-left-color: #3b82f6;
      background: #eff6ff;
    }

    .badge-step {
      font-size: 11px;
      font-weight: 800;
      text-transform: uppercase;
      padding: 3px 6px;
      border-radius: 4px;
      white-space: nowrap;
    }

    .step1-card .badge-step {
      background: #fde68a;
      color: #92400e;
    }

    .step2-card .badge-step {
      background: #bfdbfe;
      color: #1e40af;
    }

    .step-math {
      font-weight: 700;
      color: #1e293b;
    }

    .dimmed {
      opacity: 0.3 !important;
    }
    
    .highlight-ring {
      box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.4);
    }
  </style>
</head>
<body>

<div class="diagram-stage">
  
  <div class="stepper-nav">
    <button class="step-btn" id="btn-1" onclick="setStep(1)">1. Find Leftover</button>
    <button class="step-btn" id="btn-2" onclick="setStep(2)">2. Share per Friend</button>
    <button class="step-btn active" id="btn-3" onclick="setStep(3)">All Steps</button>
  </div>

  
  <div class="model-area">
    
    <div class="bar-row" id="top-bar-group">
      <div class="bar-label-top">
        <span>Given Total</span>
        <span>24 Cookies</span>
      </div>
      <div class="bar-full">
        Total: 24 Cookies
      </div>
    </div>

    
    <div class="bar-row">
      <div class="bar-label-top">
        <span>Breakdown</span>
        <span>Jar (6) + Shared (18)</span>
      </div>
      <div class="bottom-bar-wrap">
        
        <div class="part-jar" id="jar-block">
          <span>Jar</span>
          <span>6</span>
        </div>

        
        <div class="part-shared" id="shared-group">
          <div class="sub-block" id="friend-1">
            <span class="sub-name">Friend 1</span>
            <span class="val-text">6</span>
          </div>
          <div class="sub-block" id="friend-2">
            <span class="sub-name">Friend 2</span>
            <span class="val-text">6</span>
          </div>
          <div class="sub-block" id="friend-3">
            <span class="sub-name">Friend 3</span>
            <span class="val-text">6</span>
          </div>
        </div>
      </div>
    </div>
  </div>

  
  <div class="step-callouts">
    <div class="step-card step1-card active" id="card-step1">
      <span class="badge-step">Step 1</span>
      <div>
        <strong>Intermediate Sub-Question:</strong><br>
        <span class="step-math">24 − 6 = 18 left to share</span>
      </div>
    </div>

    <div class="step-card step2-card active" id="card-step2">
      <span class="badge-step">Step 2</span>
      <div>
        <strong>Target Question:</strong><br>
        <span class="step-math">18 ÷ 3 = 6 cookies per friend</span>
      </div>
    </div>
  </div>
</div>

<script>
  function setStep(step) {
    document.querySelectorAll('.step-btn').forEach((b, i) => {
      b.classList.toggle('active', i + 1 === step);
    });

    const topBar = document.getElementById('top-bar-group');
    const jarBlock = document.getElementById('jar-block');
    const sharedGroup = document.getElementById('shared-group');
    const card1 = document.getElementById('card-step1');
    const card2 = document.getElementById('card-step2');
    const friendBlocks = document.querySelectorAll('.sub-block .val-text');

    if (step === 1) {
      topBar.classList.remove('dimmed');
      jarBlock.classList.remove('dimmed');
      sharedGroup.classList.remove('dimmed');
      sharedGroup.classList.add('highlight-ring');
      card1.classList.add('active');
      card2.classList.remove('active');
      friendBlocks.forEach(el => el.textContent = '?');
    } else if (step === 2) {
      topBar.classList.add('dimmed');
      jarBlock.classList.add('dimmed');
      sharedGroup.classList.remove('dimmed');
      sharedGroup.classList.remove('highlight-ring');
      card1.classList.remove('active');
      card2.classList.add('active');
      friendBlocks.forEach(el => el.textContent = '6');
    } else {
      // Step 3: All
      topBar.classList.remove('dimmed');
      jarBlock.classList.remove('dimmed');
      sharedGroup.classList.remove('dimmed');
      sharedGroup.classList.remove('highlight-ring');
      card1.classList.add('active');
      card2.classList.add('active');
      friendBlocks.forEach(el => el.textContent = '6');
    }
  }

  // Initial step 3 (full diagram visible)
  setStep(3);
</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 {
      background: #f8f9fa;
      font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
      color: #1e293b;
      padding: 12px;
      display: flex;
      flex-direction: column;
      gap: 12px;
      user-select: none;
    }

    /* Problem statement card */
    .problem-box {
      background: #ffffff;
      border: 1.5px solid #e2e8f0;
      border-radius: 12px;
      padding: 14px 16px;
      font-size: 15px;
      line-height: 1.6;
      font-weight: 500;
      box-shadow: 0 2px 6px rgba(0,0,0,0.03);
    }

    .hl-fact1 {
      background: #dcfce7;
      color: #15803d;
      padding: 2px 6px;
      border-radius: 6px;
      border: 1.5px solid #86efac;
      cursor: pointer;
      transition: all 0.25s ease;
      display: inline-block;
    }

    .hl-fact2 {
      background: #ecfdf5;
      color: #047857;
      padding: 2px 6px;
      border-radius: 6px;
      border: 1.5px solid #6ee7b7;
      cursor: pointer;
      transition: all 0.25s ease;
      display: inline-block;
    }

    .hl-goal {
      background: #e0f2fe;
      color: #0369a1;
      padding: 2px 6px;
      border-radius: 6px;
      border: 1.5px solid #7dd3fc;
      cursor: pointer;
      transition: all 0.25s ease;
      display: inline-block;
      font-weight: 600;
    }

    .active-hl {
      box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.25);
      transform: translateY(-1px);
    }

    /* Breakdown Grid */
    .breakdown {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    /* Goal Box (Blue) */
    .goal-card {
      background: #f0f9ff;
      border: 2px solid #38bdf8;
      border-radius: 12px;
      padding: 12px 14px;
      box-shadow: 0 0 12px rgba(56, 189, 248, 0.25);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
      cursor: pointer;
      transition: all 0.25s ease;
    }

    .goal-card.active {
      border-color: #0284c7;
      box-shadow: 0 0 16px rgba(2, 132, 199, 0.4);
      background: #e0f2fe;
    }

    .goal-left {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .icon-badge-blue {
      background: #0284c7;
      color: #ffffff;
      width: 34px;
      height: 34px;
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 16px;
      flex-shrink: 0;
    }

    .title-blue {
      font-size: 13px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      font-weight: 700;
      color: #0369a1;
    }

    .desc-blue {
      font-size: 15px;
      font-weight: 600;
      color: #0f172a;
    }

    /* Facts Row (Green) */
    .facts-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 10px;
    }

    .fact-card {
      background: #f0fdf4;
      border: 1.5px solid #86efac;
      border-radius: 12px;
      padding: 12px 14px;
      display: flex;
      flex-direction: column;
      gap: 4px;
      cursor: pointer;
      transition: all 0.25s ease;
    }

    .fact-card.active {
      border-color: #16a34a;
      box-shadow: 0 0 14px rgba(22, 163, 74, 0.3);
      background: #dcfce7;
    }

    .fact-header {
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .icon-badge-green {
      background: #16a34a;
      color: #ffffff;
      width: 26px;
      height: 26px;
      border-radius: 6px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 13px;
      font-weight: 700;
      flex-shrink: 0;
    }

    .title-green {
      font-size: 12px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      font-weight: 700;
      color: #15803d;
    }

    .desc-green {
      font-size: 14px;
      font-weight: 600;
      color: #1e293b;
      margin-top: 2px;
    }

    /* Interactive clue status bar */
    .status-bar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 6px 10px;
      font-size: 13px;
      color: #64748b;
      font-weight: 500;
    }

    .tag-bubble {
      font-size: 12px;
      font-weight: 600;
      padding: 3px 8px;
      border-radius: 12px;
      background: #e2e8f0;
      color: #475569;
    }

    @media (max-width: 440px) {
      .facts-grid {
        grid-template-columns: 1fr;
      }
    }
  </style>
</head>
<body>

  
  <div class="problem-box">
    Leo baked <span class="hl-fact1" id="textFact1">🍪 24 total cookies</span>. He saved <span class="hl-fact2" id="textFact2">6 cookies in a jar</span>. He shared the rest among his friends. <span class="hl-goal" id="textGoal">How many cookies did each friend get?</span>
  </div>

  
  <div class="breakdown">
    
    
    <div class="goal-card" id="cardGoal">
      <div class="goal-left">
        <div class="icon-badge-blue">🎯</div>
        <div>
          <div class="title-blue">Target Goal</div>
          <div class="desc-blue">Cookies per friend</div>
        </div>
      </div>
      <div style="font-size: 20px;">❓</div>
    </div>

    
    <div class="facts-grid">
      
      <div class="fact-card" id="cardFact1">
        <div class="fact-header">
          <div class="icon-badge-green">1</div>
          <div class="title-green">Given Fact 1</div>
        </div>
        <div class="desc-green">🍪 24 total cookies</div>
      </div>

      <div class="fact-card" id="cardFact2">
        <div class="fact-header">
          <div class="icon-badge-green">2</div>
          <div class="title-green">Given Fact 2</div>
        </div>
        <div class="desc-green">🫙 6 in jar</div>
      </div>

    </div>

  </div>

  <div class="status-bar">
    <span>💡 Tap any clue to connect</span>
    <span class="tag-bubble" id="statusInfo">Viewing: All Clues</span>
  </div>

  <script>
    const items = [
      { id: 'goal', textEl: 'textGoal', cardEl: 'cardGoal', label: 'Goal (Target Question)' },
      { id: 'fact1', textEl: 'textFact1', cardEl: 'cardFact1', label: 'Fact 1 (Total Cookies)' },
      { id: 'fact2', textEl: 'textFact2', cardEl: 'cardFact2', label: 'Fact 2 (Cookies in Jar)' }
    ];

    let activeItem = null;

    function setActive(targetId) {
      if (activeItem === targetId) {
        // Toggle off
        activeItem = null;
      } else {
        activeItem = targetId;
      }

      items.forEach(item => {
        const text = document.getElementById(item.textEl);
        const card = document.getElementById(item.cardEl);
        const isMatch = activeItem === item.id;

        if (isMatch) {
          text.classList.add('active-hl');
          card.classList.add('active');
        } else {
          text.classList.remove('active-hl');
          card.classList.remove('active');
        }
      });

      const info = document.getElementById('statusInfo');
      if (activeItem) {
        const current = items.find(i => i.id === activeItem);
        info.textContent = current.label;
      } else {
        info.textContent = 'Viewing: All Clues';
      }
    }

    items.forEach(item => {
      document.getElementById(item.textEl).addEventListener('click', () => setActive(item.id));
      document.getElementById(item.cardEl).addEventListener('click', () => setActive(item.id));
    });
  </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;
      user-select: none;
    }

    .decoder-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      margin-bottom: 12px;
    }

    @media (max-width: 480px) {
      .decoder-grid {
        grid-template-columns: 1fr;
      }
    }

    .col-header {
      font-size: 13px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      color: #64748b;
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .clue-list, .roadmap {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    /* Clue Pills */
    .clue-pill {
      background: #f8fafc;
      border: 2px solid #e2e8f0;
      border-radius: 10px;
      padding: 10px 12px;
      cursor: pointer;
      transition: all 0.3s ease;
      position: relative;
    }

    .clue-pill.active {
      border-color: #22b7ff;
      background: #f0f9ff;
      box-shadow: 0 4px 12px rgba(34, 183, 255, 0.15);
    }

    .clue-pill.color-1.active {
      border-color: #f59e0b;
      background: #fffbeb;
    }

    .clue-pill.color-2.active {
      border-color: #10b981;
      background: #ecfdf5;
    }

    .clue-text {
      font-weight: 600;
      font-size: 14px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .clue-tag {
      font-size: 12px;
      font-weight: 700;
      padding: 2px 8px;
      border-radius: 6px;
      background: #e2e8f0;
      color: #475569;
    }

    .color-1.active .clue-tag {
      background: #fef3c7;
      color: #b45309;
    }

    .color-2.active .clue-tag {
      background: #d1fae5;
      color: #047857;
    }

    /* Math Steps */
    .step-card {
      background: #f8fafc;
      border: 2px solid #e2e8f0;
      border-radius: 10px;
      padding: 10px 12px;
      transition: all 0.3s ease;
      opacity: 0.45;
    }

    .step-card.active {
      opacity: 1;
      border-color: #3b82f6;
      background: #ffffff;
      box-shadow: 0 4px 12px rgba(59, 130, 246, 0.12);
    }

    .step-label {
      font-size: 11px;
      font-weight: 700;
      text-transform: uppercase;
      color: #64748b;
      margin-bottom: 4px;
    }

    .step-math {
      font-size: 16px;
      font-weight: 700;
      font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .badge-op {
      padding: 1px 6px;
      border-radius: 4px;
      font-size: 13px;
    }

    .op-sub { background: #fef3c7; color: #b45309; }
    .op-div { background: #d1fae5; color: #047857; }

    .check-icon {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 20px;
      height: 20px;
      background: #10b981;
      color: white;
      border-radius: 50%;
      font-size: 12px;
      font-weight: 900;
      margin-left: auto;
      transform: scale(0);
      transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    }

    .step-card.active .check-icon {
      transform: scale(1);
    }

    /* Interactive Stepper Bar */
    .controls {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 8px;
      padding-top: 4px;
    }

    .nav-btn {
      background: #f1f5f9;
      border: 1px solid #cbd5e1;
      border-radius: 8px;
      padding: 6px 12px;
      font-size: 13px;
      font-weight: 600;
      color: #334155;
      cursor: pointer;
      display: flex;
      align-items: center;
      gap: 4px;
    }

    .nav-btn:hover {
      background: #e2e8f0;
    }

    .step-pills {
      display: flex;
      gap: 6px;
    }

    .dot {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      border: 2px solid #cbd5e1;
      background: #ffffff;
      color: #64748b;
      font-size: 12px;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: all 0.2s ease;
    }

    .dot.active {
      border-color: #3b82f6;
      background: #3b82f6;
      color: #ffffff;
    }
  </style>
</head>
<body>

  <div class="decoder-grid">
    
    <div>
      <div class="col-header">🔍 Clue Words</div>
      <div class="clue-list">
        <div class="clue-pill color-1 active" id="clue1" onclick="setStep(0)">
          <div class="clue-text">
            <span>"put in a jar"</span>
            <span class="clue-tag">− 6</span>
          </div>
        </div>

        <div class="clue-pill color-2" id="clue2" onclick="setStep(1)">
          <div class="clue-text">
            <span>"shared equally"</span>
            <span class="clue-tag">÷ 3</span>
          </div>
        </div>
      </div>
    </div>

    
    <div>
      <div class="col-header">🗺️ Math Roadmap</div>
      <div class="roadmap">
        <div class="step-card active" id="stepCard1" onclick="setStep(0)">
          <div class="step-label">Step 1 • Subtract jar</div>
          <div class="step-math">
            24 <span class="badge-op op-sub">− 6</span> = 18 left
          </div>
        </div>

        <div class="step-card" id="stepCard2" onclick="setStep(1)">
          <div class="step-label">Step 2 • Divide by friends</div>
          <div class="step-math">
            18 <span class="badge-op op-div">÷ 3</span> = 6 cookies
            <span class="check-icon">✓</span>
          </div>
        </div>
      </div>
    </div>
  </div>

  
  <div class="controls">
    <button class="nav-btn" onclick="prevStep()">◀ Back</button>
    <div class="step-pills">
      <button class="dot active" id="dot0" onclick="setStep(0)">1</button>
      <button class="dot" id="dot1" onclick="setStep(1)">2</button>
    </div>
    <button class="nav-btn" onclick="nextStep()">Next ▶</button>
  </div>

  <script>
    let currentStep = 0;
    const totalSteps = 2;

    function render() {
      // Clues
      document.getElementById('clue1').classList.toggle('active', currentStep === 0);
      document.getElementById('clue2').classList.toggle('active', currentStep === 1);

      // Steps
      document.getElementById('stepCard1').classList.toggle('active', currentStep >= 0);
      document.getElementById('stepCard2').classList.toggle('active', currentStep === 1);

      // Dots
      document.getElementById('dot0').classList.toggle('active', currentStep === 0);
      document.getElementById('dot1').classList.toggle('active', currentStep === 1);
    }

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

    function nextStep() {
      currentStep = (currentStep + 1) % totalSteps;
      render();
    }

    function prevStep() {
      currentStep = (currentStep - 1 + totalSteps) % totalSteps;
      render();
    }

    // Auto-advance slowly to demonstrate connection
    let timer = setInterval(() => {
      nextStep();
    }, 4500);

    // Pause auto-advance on user interaction
    document.body.addEventListener('click', () => {
      clearInterval(timer);
    }, { once: true });
  </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">
  <link rel="stylesheet" href="{{VENDOR_CDN}}/katex.min.css">
  <script src="{{VENDOR_CDN}}/katex.min.js"></script>
  <style>
    * { box-sizing: border-box; margin: 0; padding: 0; font-family: system-ui, -apple-system, sans-serif; }
    body { padding: 12px; background: #ffffff; color: #0f172a; display: flex; flex-direction: column; gap: 10px; }

    /* Target Question Banner */
    .target-banner {
      background: #eff6ff;
      border: 2px solid #2563eb;
      border-radius: 10px;
      padding: 8px 12px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 8px;
    }
    .target-title {
      font-size: 13px;
      font-weight: 800;
      color: #1e40af;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    .target-q {
      font-size: 15px;
      font-weight: 800;
      color: #0f172a;
    }

    /* Clues Row */
    .clues-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 6px;
    }
    .clue-chip {
      padding: 7px 4px;
      font-size: 13px;
      font-weight: 700;
      text-align: center;
      border-radius: 8px;
      border: 1.5px dashed #94a3b8;
      background: #f8fafc;
      color: #334155;
      transition: all 0.3s ease;
    }
    .clue-chip.keep {
      border-color: #16a34a;
      background: #dcfce7;
      color: #14532d;
      border-style: solid;
    }
    .clue-chip.drop {
      border-color: #dc2626;
      background: #fee2e2;
      color: #7f1d1d;
      border-style: solid;
    }

    /* Two Bins Section */
    .bins-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 10px;
    }
    .bin {
      border-radius: 12px;
      padding: 10px;
      display: flex;
      flex-direction: column;
      gap: 8px;
      min-height: 145px;
    }
    .bin-keep {
      background: #f0fdf4;
      border: 2px solid #16a34a;
    }
    .bin-drop {
      background: #fef2f2;
      border: 2px dashed #dc2626;
    }
    .bin-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 13px;
      font-weight: 800;
    }
    .bin-keep .bin-header { color: #14532d; }
    .bin-drop .bin-header { color: #7f1d1d; }

    .bin-items {
      display: flex;
      flex-direction: column;
      gap: 6px;
      flex: 1;
    }
    .bin-card {
      background: #ffffff;
      padding: 7px 10px;
      border-radius: 8px;
      font-size: 13px;
      font-weight: 700;
      color: #0f172a;
      border: 1px solid #cbd5e1;
      display: flex;
      align-items: center;
      justify-content: space-between;
      box-shadow: 0 1px 2px rgba(0,0,0,0.06);
      transition: opacity 0.3s ease;
    }
    .bin-card.crossed {
      color: #334155;
      background: #ffffff;
      text-decoration: line-through;
      text-decoration-color: #dc2626;
      text-decoration-thickness: 2.5px;
    }

    .badge-check {
      color: #15803d;
      font-weight: 800;
      font-size: 14px;
    }
    .badge-cross {
      color: #b91c1c;
      font-weight: 800;
      font-size: 14px;
    }

    .solution-box {
      background: #15803d;
      color: #ffffff;
      font-weight: 800;
      font-size: 15px;
      text-align: center;
      padding: 7px;
      border-radius: 6px;
      margin-top: auto;
      transition: opacity 0.3s ease;
    }

    /* Controls */
    .controls {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      margin-top: 2px;
    }
    .step-btn {
      padding: 6px 14px;
      font-size: 13px;
      font-weight: 700;
      border-radius: 20px;
      border: 1.5px solid #94a3b8;
      background: #ffffff;
      color: #1e293b;
      cursor: pointer;
      transition: all 0.2s ease;
    }
    .step-btn:hover {
      background: #f1f5f9;
    }
    .step-btn.active {
      background: #0284c7;
      border-color: #0369a1;
      color: #ffffff;
    }

    @media (max-width: 420px) {
      .clues-grid { grid-template-columns: repeat(2, 1fr); }
      .bins-container { grid-template-columns: 1fr; }
      .target-banner { flex-direction: column; align-items: flex-start; }
    }
  </style>
</head>
<body>

  
  <div class="target-banner">
    <span class="target-title">Target Question 🎯</span>
    <span class="target-q">Total Blue Pens?</span>
  </div>

  
  <div class="clues-grid">
    <div id="c1" class="clue-chip">Maya is 8</div>
    <div id="c2" class="clue-chip">5 blue pens</div>
    <div id="c3" class="clue-chip">+3 blue pens</div>
    <div id="c4" class="clue-chip">4 red pens</div>
  </div>

  
  <div class="bins-container">
    
    <div class="bin bin-keep">
      <div class="bin-header">
        <span>✓ Keep (Blue Pens)</span>
        <span>🔵</span>
      </div>
      <div class="bin-items" id="keepList">
        <div class="bin-card" id="k1" style="opacity: 0.35;">
          <span>5 blue pens</span>
          <span class="badge-check">✓</span>
        </div>
        <div class="bin-card" id="k2" style="opacity: 0.35;">
          <span>+ 3 blue pens</span>
          <span class="badge-check">✓</span>
        </div>
      </div>
      <div class="solution-box" id="calcBox" style="opacity: 0.35;">
        <span id="mathEq">5 + 3 = 8 blue pens</span>
      </div>
    </div>

    
    <div class="bin bin-drop">
      <div class="bin-header">
        <span>✕ Extra Info</span>
        <span>🗑️</span>
      </div>
      <div class="bin-items" id="dropList">
        <div class="bin-card crossed" id="d1" style="opacity: 0.35;">
          <span>Maya is 8</span>
          <span class="badge-cross">✕</span>
        </div>
        <div class="bin-card crossed" id="d2" style="opacity: 0.35;">
          <span>4 red pens</span>
          <span class="badge-cross">✕</span>
        </div>
      </div>
    </div>
  </div>

  
  <div class="controls">
    <button class="step-btn active" id="btn1">1. Read</button>
    <button class="step-btn" id="btn2">2. Filter</button>
    <button class="step-btn" id="btn3">3. Solve</button>
  </div>

  <script>
    // Helper selectors & event handlers
    const $ = (selector, context = document) => context.querySelector(selector);
    const $$ = (selector, context = document) => Array.from(context.querySelectorAll(selector));
    
    function onTap(el, handler) {
      if (!el) return;
      el.addEventListener('click', handler);
    }

    // KaTeX formula render
    try {
      if (typeof katex !== 'undefined') {
        katex.render("5 + 3 = 8\\text{ blue pens}", $('#mathEq'));
      }
    } catch(e) {}

    let currentStep = 0;
    let autoTimer = null;

    function renderStep(step) {
      currentStep = step;
      $$('.step-btn').forEach((b, i) => {
        b.classList.toggle('active', i === step);
      });

      const c1 = $('#c1'), c2 = $('#c2'), c3 = $('#c3'), c4 = $('#c4');
      const k1 = $('#k1'), k2 = $('#k2'), d1 = $('#d1'), d2 = $('#d2');
      const calc = $('#calcBox');

      if (step === 0) {
        // Step 1: Read
        [c1, c2, c3, c4].forEach(c => { if(c) c.className = 'clue-chip'; });
        [k1, k2, d1, d2, calc].forEach(el => { if(el) el.style.opacity = '0.35'; });
      } else if (step === 1) {
        // Step 2: Filter
        if (c1) c1.className = 'clue-chip drop';
        if (c2) c2.className = 'clue-chip keep';
        if (c3) c3.className = 'clue-chip keep';
        if (c4) c4.className = 'clue-chip drop';

        [k1, k2, d1, d2].forEach(el => { if(el) el.style.opacity = '1'; });
        if (calc) calc.style.opacity = '0.35';
      } else if (step === 2) {
        // Step 3: Solve
        if (c1) c1.className = 'clue-chip drop';
        if (c2) c2.className = 'clue-chip keep';
        if (c3) c3.className = 'clue-chip keep';
        if (c4) c4.className = 'clue-chip drop';

        [k1, k2, d1, d2, calc].forEach(el => { if(el) el.style.opacity = '1'; });
      }
    }

    function setStep(i) {
      if (autoTimer) clearInterval(autoTimer);
      renderStep(i);
    }

    onTap($('#btn1'), () => setStep(0));
    onTap($('#btn2'), () => setStep(1));
    onTap($('#btn3'), () => setStep(2));

    // Initial render and gentle auto-cycling
    renderStep(0);
    autoTimer = setInterval(() => {
      renderStep((currentStep + 1) % 3);
    }, 3500);
  </script>
</body>
</html>

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <style>
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    body {
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      background: #f8fafc;
      color: #1e293b;
      padding: 14px;
      display: flex;
      flex-direction: column;
      gap: 12px;
      min-height: 100%;
    }

    /* Word problem banner */
    .problem-box {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: 12px;
      padding: 14px 16px;
      font-size: 15px;
      line-height: 1.85;
      color: #1e293b;
      box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    }

    .problem-title {
      font-size: 11px;
      font-weight: 700;
      letter-spacing: 0.6px;
      text-transform: uppercase;
      color: #475569;
      margin-bottom: 6px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    /* Highlighted tags in problem */
    .hl-badge {
      display: inline-block;
      padding: 2px 8px;
      border-radius: 6px;
      font-weight: 600;
      line-height: 1.35;
      margin: 2px 1px;
      vertical-align: baseline;
      transition: background 0.2s, box-shadow 0.2s, color 0.2s;
    }

    .hl-given {
      background: #dcfce7;
      color: #14532d;
      border-bottom: 2px solid #22c55e;
    }

    .hl-clue {
      background: #fef3c7;
      color: #78350f;
      border-bottom: 2px solid #f59e0b;
    }

    .hl-target {
      background: #dbeafe;
      color: #1e3a8a;
      border-bottom: 2px solid #3b82f6;
    }

    .hl-active {
      box-shadow: 0 0 0 2px currentColor;
    }

    /* Cards grid */
    .cards-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 12px;
      flex: 1;
    }

    @media (max-width: 580px) {
      .cards-grid {
        grid-template-columns: 1fr;
        gap: 10px;
      }
    }

    .detective-card {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: 12px;
      padding: 14px 12px;
      display: flex;
      flex-direction: column;
      gap: 8px;
      cursor: pointer;
      box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
      transition: box-shadow 0.15s ease, border-color 0.15s ease, background-color 0.15s ease;
      position: relative;
      user-select: none;
    }

    .detective-card:hover {
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
      border-color: #cbd5e1;
    }

    .detective-card.active {
      border-color: currentColor;
      box-shadow: 0 4px 14px rgba(0, 0, 0, 0.12);
    }

    .card-header {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .icon-badge {
      width: 34px;
      height: 34px;
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 17px;
      flex-shrink: 0;
    }

    .card-title {
      font-size: 14px;
      font-weight: 700;
      line-height: 1.25;
    }

    .card-desc {
      font-size: 12.5px;
      color: #334155;
      line-height: 1.4;
    }

    .card-example {
      margin-top: auto;
      padding: 6px 10px;
      border-radius: 6px;
      font-size: 12px;
      font-weight: 600;
    }

    /* Color Themes */
    .card-green {
      color: #15803d;
    }
    .card-green .icon-badge {
      background: #dcfce7;
      color: #14532d;
    }
    .card-green .card-example {
      background: #f0fdf4;
      color: #14532d;
      border-left: 3px solid #22c55e;
      border: 1px solid #bbf7d0;
      border-left-width: 3px;
    }

    .card-amber {
      color: #b45309;
    }
    .card-amber .icon-badge {
      background: #fef3c7;
      color: #78350f;
    }
    .card-amber .card-example {
      background: #fffbeb;
      color: #78350f;
      border-left: 3px solid #f59e0b;
      border: 1px solid #fde68a;
      border-left-width: 3px;
    }

    .card-blue {
      color: #1d4ed8;
    }
    .card-blue .icon-badge {
      background: #dbeafe;
      color: #1e3a8a;
    }
    .card-blue .card-example {
      background: #eff6ff;
      color: #1e3a8a;
      border-left: 3px solid #3b82f6;
      border: 1px solid #bfdbfe;
      border-left-width: 3px;
    }

    /* Instructions footer */
    .footer-hint {
      text-align: center;
      font-size: 11.5px;
      font-weight: 500;
      color: #64748b;
      padding: 2px 0;
    }
  </style>
</head>
<body>

  
  <div class="problem-box">
    <div class="problem-title"><span>🔍</span> Detective Case Sample</div>
    <div>
      Leo baked <span class="hl-badge hl-given active" id="hl-1">24 cookies</span>. 
      He <span class="hl-badge hl-clue" id="hl-2">shared equally</span> among 4 boxes. 
      <span class="hl-badge hl-target" id="hl-3">How many in each box?</span>
    </div>
  </div>

  
  <div class="cards-grid">
    
    <div class="detective-card card-green active" id="card-1" onclick="selectCard(1)">
      <div class="card-header">
        <div class="icon-badge">📋</div>
        <div class="card-title">1. Given Facts</div>
      </div>
      <div class="card-desc">Numbers & facts explicitly told to us</div>
      <div class="card-example">e.g., 24 cookies</div>
    </div>

    
    <div class="detective-card card-amber" id="card-2" onclick="selectCard(2)">
      <div class="card-header">
        <div class="icon-badge">🔎</div>
        <div class="card-title">2. Hidden Clues</div>
      </div>
      <div class="card-desc">Action words telling us the operation</div>
      <div class="card-example">e.g., shared equally = divide (÷)</div>
    </div>

    
    <div class="detective-card card-blue" id="card-3" onclick="selectCard(3)">
      <div class="card-header">
        <div class="icon-badge">🎯</div>
        <div class="card-title">3. Target Question</div>
      </div>
      <div class="card-desc">What we need to find (Look for the ?)</div>
      <div class="card-example">e.g., "How many in each box?"</div>
    </div>
  </div>

  <div class="footer-hint">Tap any card to highlight matching clue</div>

  <script>
    function selectCard(num) {
      for (let i = 1; i <= 3; i++) {
        document.getElementById('card-' + i).classList.remove('active');
        document.getElementById('hl-' + i).classList.remove('hl-active');
      }
      document.getElementById('card-' + num).classList.add('active');
      document.getElementById('hl-' + num).classList.add('hl-active');
    }

    // Auto cycle initially to demonstrate interactivity
    let autoStep = 1;
    const interval = setInterval(() => {
      autoStep = (autoStep % 3) + 1;
      selectCard(autoStep);
    }, 3500);

    // Stop auto cycling on user interaction
    document.body.addEventListener('pointerdown', () => {
      clearInterval(interval);
    }, { once: true });
  </script>
</body>
</html>

OGM.3.MP.1

Aligned learning resources

Related diagrams