<!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>Present Perfect: Have vs Has</title>
  <style>
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      -webkit-tap-highlight-color: transparent;
    }

    body {
      background: transparent;
      color: #1e2945;
      padding: 12px;
      display: flex;
      justify-content: center;
      align-items: center;
      min-height: 100%;
    }

    .diagram-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      width: 100%;
      max-width: 580px;
    }

    .column {
      display: flex;
      flex-direction: column;
      border-radius: 12px;
      padding: 12px;
      background: #f8fafc;
      border: 1.5px solid #e2e8f0;
      gap: 10px;
    }

    .col-have {
      background: #f0f9ff;
      border-color: #bae6fd;
    }

    .col-has {
      background: #faf5ff;
      border-color: #e9d5ff;
    }

    .header-badge {
      text-align: center;
      padding: 8px 12px;
      border-radius: 8px;
      font-weight: 700;
      font-size: 16px;
      letter-spacing: 0.2px;
    }

    .badge-have {
      background: #0284c7;
      color: #ffffff;
    }

    .badge-has {
      background: #9333ea;
      color: #ffffff;
    }

    .chips-container {
      display: flex;
      flex-direction: column;
      gap: 6px;
      flex: 1;
    }

    .chip {
      background: #ffffff;
      border: 1.5px solid #cbd5e1;
      padding: 8px 10px;
      border-radius: 8px;
      font-size: 14px;
      font-weight: 600;
      color: #334155;
      text-align: center;
      cursor: pointer;
      user-select: none;
      transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
    }

    .col-have .chip.active {
      background: #e0f2fe;
      border-color: #0284c7;
      color: #0369a1;
      box-shadow: 0 1px 3px rgba(2, 132, 199, 0.15);
    }

    .col-has .chip.active {
      background: #f3e8ff;
      border-color: #9333ea;
      color: #7e22ce;
      box-shadow: 0 1px 3px rgba(147, 51, 234, 0.15);
    }

    .chip-sub {
      font-size: 11px;
      font-weight: 500;
      opacity: 0.75;
      display: block;
      margin-top: 1px;
    }

    .example-box {
      margin-top: auto;
      background: #ffffff;
      border-radius: 8px;
      padding: 10px 8px;
      text-align: center;
      font-size: 14px;
      font-weight: 600;
      min-height: 48px;
      display: flex;
      align-items: center;
      justify-content: center;
      border: 1px dashed #cbd5e1;
      line-height: 1.3;
    }

    .col-have .example-box {
      border-color: #7dd3fc;
      color: #0c4a6e;
    }

    .col-has .example-box {
      border-color: #d8b4fe;
      color: #581c87;
    }

    .highlight-have {
      color: #0284c7;
      font-weight: 800;
      text-decoration: underline;
      text-underline-offset: 3px;
    }

    .highlight-has {
      color: #9333ea;
      font-weight: 800;
      text-decoration: underline;
      text-underline-offset: 3px;
    }

    @media (max-width: 380px) {
      .header-badge {
        font-size: 14px;
        padding: 6px 8px;
      }
      .chip {
        font-size: 13px;
        padding: 6px 8px;
      }
      .example-box {
        font-size: 13px;
        padding: 8px 6px;
      }
    }
  </style>
</head>
<body>

  <div class="diagram-grid">
    
    <div class="column col-have">
      <div class="header-badge badge-have">Use HAVE</div>
      <div class="chips-container" id="haveGroup">
        <button type="button" class="chip" data-subject="I">I</button>
        <button type="button" class="chip" data-subject="You">You</button>
        <button type="button" class="chip" data-subject="We">We</button>
        <button type="button" class="chip active" data-subject="They">They</button>
        <button type="button" class="chip" data-subject="The players">
          The players
          <span class="chip-sub">(plural)</span>
        </button>
      </div>
      <div class="example-box" id="haveExample">
        <span><strong id="haveSubject">They</strong> <span class="highlight-have">have</span> scored!</span>
      </div>
    </div>

    
    <div class="column col-has">
      <div class="header-badge badge-has">Use HAS</div>
      <div class="chips-container" id="hasGroup">
        <button type="button" class="chip" data-subject="He">He</button>
        <button type="button" class="chip" data-subject="She">She</button>
        <button type="button" class="chip" data-subject="It">It</button>
        <button type="button" class="chip active" data-subject="Leo">
          Leo
          <span class="chip-sub">(singular)</span>
        </button>
      </div>
      <div class="example-box" id="hasExample">
        <span><strong id="hasSubject">Leo</strong> <span class="highlight-has">has</span> scored!</span>
      </div>
    </div>
  </div>

  <script>
    function setupColumn(containerId, subjectId) {
      const container = document.getElementById(containerId);
      const subjectSpan = document.getElementById(subjectId);
      const chips = container.querySelectorAll('.chip');

      chips.forEach(chip => {
        chip.addEventListener('click', () => {
          chips.forEach(c => c.classList.remove('active'));
          chip.classList.add('active');
          subjectSpan.textContent = chip.dataset.subject;
        });
      });
    }

    setupColumn('haveGroup', 'haveSubject');
    setupColumn('hasGroup', 'hasSubject');
  </script>
</body>
</html>

Forming and Using the Present Perfect Tense

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta name="aspect-ratio" content="4:3">
  <style>
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    }

    body {
      padding: 12px;
      background: #f8fafc;
      color: #1e293b;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .controls {
      display: flex;
      justify-content: center;
      gap: 6px;
    }

    .tab-btn {
      padding: 6px 14px;
      font-size: 13px;
      font-weight: 600;
      border-radius: 20px;
      border: 1px solid #cbd5e1;
      background: #ffffff;
      color: #64748b;
      cursor: pointer;
      transition: all 0.2s ease;
    }

    .tab-btn.active {
      background: #2563eb;
      color: #ffffff;
      border-color: #2563eb;
      box-shadow: 0 2px 4px rgba(37, 99, 235, 0.2);
    }

    .section {
      background: #ffffff;
      border-radius: 12px;
      border: 1px solid #e2e8f0;
      padding: 10px 12px;
      display: flex;
      flex-direction: column;
      gap: 8px;
      transition: opacity 0.3s ease;
    }

    .section.hidden {
      display: none;
    }

    .section-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid #f1f5f9;
      padding-bottom: 6px;
    }

    .section-title {
      font-size: 13px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .reg-title { color: #0d9488; }
    .irreg-title { color: #7c3aed; }

    .tag {
      font-size: 11px;
      font-weight: 600;
      padding: 2px 8px;
      border-radius: 12px;
    }

    .reg-tag { background: #ccfbf1; color: #0f766e; }
    .irreg-tag { background: #f3e8ff; color: #6b21a8; }

    .grid-header {
      display: grid;
      grid-template-columns: 1fr auto 1fr auto 1.4fr;
      font-size: 11px;
      font-weight: 600;
      color: #94a3b8;
      text-transform: uppercase;
      padding: 0 6px;
    }

    .verb-row {
      display: grid;
      grid-template-columns: 1fr auto 1fr auto 1.4fr;
      align-items: center;
      background: #f8fafc;
      border-radius: 8px;
      padding: 8px 6px;
      font-size: 14px;
      font-weight: 500;
      border: 1px solid transparent;
      transition: background 0.2s ease, border-color 0.2s ease;
    }

    .verb-row:hover, .verb-row.active {
      background: #ffffff;
      border-color: #cbd5e1;
      box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
    }

    .arrow {
      color: #cbd5e1;
      font-size: 13px;
      padding: 0 4px;
    }

    .base {
      color: #334155;
    }

    .past {
      color: #64748b;
    }

    .perf {
      display: flex;
      align-items: center;
      gap: 4px;
      font-weight: 600;
    }

    .aux {
      color: #64748b;
      font-weight: 500;
    }

    /* Regular Highlight */
    .highlight-reg {
      color: #0f766e;
      background: #ccfbf1;
      padding: 2px 6px;
      border-radius: 4px;
    }

    .highlight-reg span {
      text-decoration: underline;
      font-weight: 700;
    }

    /* Irregular Highlight */
    .highlight-irreg {
      color: #6b21a8;
      background: #f3e8ff;
      padding: 2px 6px;
      border-radius: 4px;
      font-weight: 700;
    }

    .col-perf-hdr {
      color: #2563eb;
    }
  </style>
</head>
<body>

  <div class="controls">
    <button class="tab-btn active" onclick="setFilter('all')">All Verbs</button>
    <button class="tab-btn" onclick="setFilter('regular')">Regular (+ed)</button>
    <button class="tab-btn" onclick="setFilter('irregular')">Irregular</button>
  </div>

  
  <div class="section" id="sec-regular">
    <div class="section-header">
      <span class="section-title reg-title">✦ Regular</span>
      <span class="tag reg-tag">Rule: +ed</span>
    </div>

    <div class="grid-header">
      <span>Base</span>
      <span></span>
      <span>Past</span>
      <span></span>
      <span class="col-perf-hdr">Present Perfect</span>
    </div>

    <div class="verb-row">
      <span class="base">cook</span>
      <span class="arrow">→</span>
      <span class="past">cooked</span>
      <span class="arrow">→</span>
      <div class="perf">
        <span class="aux">have</span>
        <span class="highlight-reg">cook<span>ed</span></span>
      </div>
    </div>

    <div class="verb-row">
      <span class="base">climb</span>
      <span class="arrow">→</span>
      <span class="past">climbed</span>
      <span class="arrow">→</span>
      <div class="perf">
        <span class="aux">has</span>
        <span class="highlight-reg">climb<span>ed</span></span>
      </div>
    </div>
  </div>

  
  <div class="section" id="sec-irregular">
    <div class="section-header">
      <span class="section-title irreg-title">✦ Irregular</span>
      <span class="tag irreg-tag">Word Changes</span>
    </div>

    <div class="grid-header">
      <span>Base</span>
      <span></span>
      <span>Past</span>
      <span></span>
      <span class="col-perf-hdr">Present Perfect</span>
    </div>

    <div class="verb-row">
      <span class="base">eat</span>
      <span class="arrow">→</span>
      <span class="past">ate</span>
      <span class="arrow">→</span>
      <div class="perf">
        <span class="aux">has</span>
        <span class="highlight-irreg">eaten</span>
      </div>
    </div>

    <div class="verb-row">
      <span class="base">fly</span>
      <span class="arrow">→</span>
      <span class="past">flew</span>
      <span class="arrow">→</span>
      <div class="perf">
        <span class="aux">have</span>
        <span class="highlight-irreg">flown</span>
      </div>
    </div>
  </div>

  <script>
    function setFilter(type) {
      const reg = document.getElementById('sec-regular');
      const irreg = document.getElementById('sec-irregular');
      const btns = document.querySelectorAll('.tab-btn');

      btns.forEach(b => b.classList.remove('active'));

      if (type === 'all') {
        reg.classList.remove('hidden');
        irreg.classList.remove('hidden');
        btns[0].classList.add('active');
      } else if (type === 'regular') {
        reg.classList.remove('hidden');
        irreg.classList.add('hidden');
        btns[1].classList.add('active');
      } else if (type === 'irregular') {
        reg.classList.add('hidden');
        irreg.classList.remove('hidden');
        btns[2].classList.add('active');
      }
    }
  </script>
</body>
</html>

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta name="aspect-ratio" content="4:3">
  <style>
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

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

    /* Inner cards */
    .card-error {
      background: #fff5f5;
      border: 1.5px solid #f87171;
      border-radius: 12px;
      padding: 12px 14px;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .card-correct {
      background: #f0fdf4;
      border: 1.5px solid #4ade80;
      border-radius: 12px;
      padding: 12px 14px;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .card-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 8px;
    }

    .badge {
      display: inline-flex;
      align-items: center;
      gap: 4px;
      font-size: 11px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      padding: 3px 8px;
      border-radius: 20px;
    }

    .badge-error {
      background: #fee2e2;
      color: #dc2626;
    }

    .badge-correct {
      background: #dcfce7;
      color: #16a34a;
    }

    .sentence {
      font-size: 16px;
      font-weight: 600;
      line-height: 1.4;
      color: #0f172a;
    }

    .tag-strike {
      display: inline-block;
      background: #fecaca;
      color: #991b1b;
      padding: 2px 6px;
      border-radius: 6px;
      text-decoration: line-through;
      text-decoration-thickness: 2px;
    }

    .tag-green {
      display: inline-block;
      background: #bbf7d0;
      color: #166534;
      padding: 2px 6px;
      border-radius: 6px;
    }

    .tag-blue {
      display: inline-block;
      background: #e0f2fe;
      color: #0369a1;
      padding: 2px 6px;
      border-radius: 6px;
    }

    .visual-rule {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 12px;
      font-weight: 600;
      color: #dc2626;
      background: #ffffff;
      padding: 6px 10px;
      border-radius: 8px;
      border: 1px dashed #fca5a5;
    }

    /* Interactive toggle for correction options */
    .tab-bar {
      display: flex;
      gap: 6px;
      background: #e2e8f0;
      padding: 3px;
      border-radius: 8px;
    }

    .tab-btn {
      flex: 1;
      border: none;
      background: transparent;
      padding: 5px 8px;
      font-size: 12px;
      font-weight: 600;
      color: #475569;
      border-radius: 6px;
      cursor: pointer;
      transition: all 0.2s ease;
      text-align: center;
    }

    .tab-btn.active {
      background: #ffffff;
      color: #16a34a;
      box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    }

    .solution-box {
      background: #ffffff;
      padding: 8px 10px;
      border-radius: 8px;
      border: 1px solid #bbf7d0;
      display: flex;
      flex-direction: column;
      gap: 4px;
    }

    .sub-label {
      font-size: 12px;
      font-weight: 500;
      color: #15803d;
      display: flex;
      align-items: center;
      gap: 4px;
    }
  </style>
</head>
<body>

  
  <div class="card-error">
    <div class="card-header">
      <span class="badge badge-error">✕ Incorrect</span>
    </div>
    <div class="sentence">
      We have visited the museum <span class="tag-strike">yesterday</span>.
    </div>
    <div class="visual-rule">
      <span>⚡</span>
      <span>Present Perfect + Specific Past Time = Clashing</span>
    </div>
  </div>

  
  <div class="card-correct">
    <div class="card-header">
      <span class="badge badge-correct">✓ Correct Choices</span>
      <div class="tab-bar">
        <button class="tab-btn active" id="tab1" onclick="showFix(1)">Option 1</button>
        <button class="tab-btn" id="tab2" onclick="showFix(2)">Option 2</button>
      </div>
    </div>

    
    <div id="fix1" class="solution-box">
      <div class="sentence">
        We have visited the museum <span class="tag-green">three times</span>.
      </div>
      <div class="sub-label">
        <span>✦</span> Total experience up to now (no past timestamp)
      </div>
    </div>

    
    <div id="fix2" class="solution-box" style="display: none;">
      <div class="sentence">
        We <span class="tag-blue">visited</span> the museum yesterday.
      </div>
      <div class="sub-label" style="color: #0369a1;">
        <span>✦</span> Simple past for finished past time
      </div>
    </div>
  </div>

  <script>
    function showFix(n) {
      const fix1 = document.getElementById('fix1');
      const fix2 = document.getElementById('fix2');
      const tab1 = document.getElementById('tab1');
      const tab2 = document.getElementById('tab2');

      if (n === 1) {
        fix1.style.display = 'flex';
        fix2.style.display = 'none';
        tab1.classList.add('active');
        tab2.classList.remove('active');
      } else {
        fix1.style.display = 'none';
        fix2.style.display = 'flex';
        tab1.classList.remove('active');
        tab2.classList.add('active');
      }
    }
  </script>
</body>
</html>

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta name="aspect-ratio" content="4:3">
  <style>
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      color: #1e2945;
      background: transparent;
      padding: 12px;
      display: flex;
      flex-direction: column;
      gap: 12px;
      width: 100%;
      height: 100%;
      justify-content: center;
    }

    .timeline-card {
      background: #ffffff;
      border: 1.5px solid #e2e8f0;
      border-radius: 12px;
      padding: 14px 16px;
      box-shadow: 0 2px 6px rgba(30, 41, 69, 0.04);
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .card-header {
      display: flex;
      justify-content: space-between;
      align-items: baseline;
      font-weight: 700;
    }

    .tense-tag {
      font-size: 13px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      color: #64748b;
    }

    .example-text {
      font-size: 16px;
      color: #1e2945;
    }

    .example-text span {
      color: #0284c7;
      font-weight: 700;
    }

    .timeline-track {
      position: relative;
      height: 64px;
      width: 100%;
    }

    svg {
      width: 100%;
      height: 100%;
      overflow: visible;
    }

    .axis-line {
      stroke: #cbd5e1;
      stroke-width: 3;
      stroke-linecap: round;
    }

    .now-line {
      stroke: #94a3b8;
      stroke-width: 2;
      stroke-dasharray: 4 3;
    }

    .now-label {
      font-size: 12px;
      font-weight: 700;
      fill: #64748b;
      text-anchor: middle;
    }

    .event-label {
      font-size: 13px;
      font-weight: 600;
      text-anchor: middle;
    }

    .glow-bridge {
      stroke: #0284c7;
      stroke-width: 5;
      stroke-linecap: round;
      filter: drop-shadow(0 0 4px rgba(2, 132, 199, 0.5));
    }

    .bridge-fill {
      fill: rgba(2, 132, 199, 0.12);
    }

    .status-badge {
      font-size: 12px;
      font-weight: 700;
      padding: 3px 8px;
      border-radius: 6px;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    .status-badge.detached {
      background: #f1f5f9;
      color: #64748b;
      border: 1px solid #e2e8f0;
    }

    .status-badge.connected {
      background: #e0f2fe;
      color: #0369a1;
      border: 1px solid #bae6fd;
      animation: pulse-badge 2s ease-in-out infinite;
    }

    @keyframes pulse-badge {
      0%, 100% { box-shadow: 0 0 0 0 rgba(2, 132, 199, 0.2); }
      50% { box-shadow: 0 0 0 4px rgba(2, 132, 199, 0.2); }
    }
  </style>
</head>
<body>

  
  <div class="timeline-card">
    <div class="card-header">
      <div class="tense-tag">Simple Past</div>
      <div class="example-text">"I <span>lost</span> my key"</div>
    </div>
    <div class="timeline-track">
      <svg viewBox="0 0 320 64" preserveAspectRatio="none">
        
        <line x1="20" y1="36" x2="295" y2="36" class="axis-line" />
        <polygon points="295,32 305,36 295,40" fill="#cbd5e1" />

        
        <line x1="240" y1="12" x2="240" y2="48" class="now-line" />
        <text x="240" y="58" class="now-label">NOW</text>

        
        <circle cx="70" cy="36" r="7" fill="#64748b" />
        <text x="70" y="20" fill="#1e2945" class="event-label">Lost key</text>

        
        <g transform="translate(130, 36)">
          <circle cx="0" cy="0" r="9" fill="#f1f5f9" stroke="#94a3b8" stroke-width="1.5" />
          <path d="M-4,-4 L4,4 M4,-4 L-4,4" stroke="#64748b" stroke-width="2" stroke-linecap="round" />
        </g>
        <text x="130" y="20" fill="#64748b" font-size="11" font-weight="600" text-anchor="middle">Cut off</text>
      </svg>
    </div>
  </div>

  
  <div class="timeline-card" style="border-color: #bae6fd; background: #fafcfe;">
    <div class="card-header">
      <div class="tense-tag" style="color: #0284c7;">Present Perfect</div>
      <div class="example-text">"I <span>have lost</span> my key"</div>
    </div>
    <div class="timeline-track">
      <svg viewBox="0 0 320 64" preserveAspectRatio="none">
        
        <line x1="20" y1="36" x2="295" y2="36" class="axis-line" />
        <polygon points="295,32 305,36 295,40" fill="#cbd5e1" />

        
        <path d="M 70,36 Q 155,10 240,36" fill="none" class="glow-bridge" />
        <polygon points="236,30 244,36 236,40" fill="#0284c7" />

        
        <circle cx="70" cy="36" r="7" fill="#0284c7" />
        <text x="70" y="20" fill="#1e2945" class="event-label">Lost key</text>

        
        <line x1="240" y1="12" x2="240" y2="48" class="now-line" stroke="#0284c7" stroke-width="2" />
        <circle cx="240" cy="36" r="7" fill="#0284c7" />
        <text x="240" y="58" class="now-label" fill="#0284c7">NOW</text>

        
        <g transform="translate(195, 14)">
          <rect x="-10" y="-12" width="124" height="20" rx="6" fill="#0284c7" />
          <text x="52" y="2" fill="#ffffff" font-size="10.5" font-weight="700" text-anchor="middle">Locked out right now!</text>
        </g>
      </svg>
    </div>
  </div>

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

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

    /* Switcher tabs */
    .tabs {
      display: flex;
      gap: 8px;
      background: #f1f5f9;
      padding: 4px;
      border-radius: 20px;
    }

    .tab-btn {
      border: none;
      background: transparent;
      padding: 6px 14px;
      border-radius: 16px;
      font-size: 14px;
      font-weight: 600;
      color: #64748b;
      cursor: pointer;
      transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
    }

    .tab-btn.active {
      background: #ffffff;
      color: #0f172a;
      box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    }

    /* Main equation display */
    .formula-section {
      width: 100%;
      max-width: 580px;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    /* Abstract formula row */
    .formula-row {
      display: flex;
      align-items: center;
      justify-content: center;
      flex-wrap: wrap;
      gap: 6px;
      font-size: 13px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    .formula-chip {
      padding: 6px 10px;
      border-radius: 8px;
      border-width: 1.5px;
      border-style: solid;
    }

    .chip-purple {
      background: #f5f3ff;
      border-color: #c4b5fd;
      color: #6d28d9;
    }

    .chip-blue {
      background: #f0f9ff;
      border-color: #bae6fd;
      color: #0284c7;
    }

    .chip-green {
      background: #f0fdf4;
      border-color: #bbf7d0;
      color: #16a34a;
    }

    .chip-gray {
      background: #f8fafc;
      border-color: #cbd5e1;
      color: #64748b;
    }

    .symbol {
      color: #94a3b8;
      font-size: 16px;
      font-weight: 800;
      padding: 0 2px;
    }

    /* Example row with dynamic pills */
    .example-row {
      display: flex;
      align-items: center;
      justify-content: center;
      flex-wrap: wrap;
      gap: 8px;
    }

    .pill {
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      padding: 8px 14px;
      border-radius: 12px;
      box-shadow: 0 2px 4px rgba(0, 0, 0, 0.04);
      transition: all 0.25s ease;
    }

    .pill-purple {
      background: #7c3aed;
      color: #ffffff;
    }

    .pill-blue {
      background: #0284c7;
      color: #ffffff;
    }

    .pill-green {
      background: #16a34a;
      color: #ffffff;
    }

    .pill-gray {
      background: #f1f5f9;
      color: #334155;
      border: 1.5px solid #e2e8f0;
    }

    .pill-word {
      font-size: 18px;
      font-weight: 700;
      line-height: 1.2;
    }

    .pill-tag {
      font-size: 11px;
      font-weight: 600;
      opacity: 0.85;
      text-transform: uppercase;
      letter-spacing: 0.4px;
      margin-top: 2px;
    }

    /* Result badge */
    .result-container {
      display: flex;
      justify-content: center;
      margin-top: 4px;
    }

    .result-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #ecfdf5;
      border: 1.5px solid #a7f3d0;
      color: #065f46;
      padding: 8px 16px;
      border-radius: 9999px;
      font-size: 14px;
      font-weight: 700;
      transition: all 0.25s ease;
    }

    .result-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #10b981;
    }
  </style>
</head>
<body>

  
  <div class="tabs">
    <button class="tab-btn active" onclick="setExample(0)">Maya</button>
    <button class="tab-btn" onclick="setExample(1)">They</button>
    <button class="tab-btn" onclick="setExample(2)">I</button>
  </div>

  <div class="formula-section">
    
    <div class="formula-row">
      <span class="formula-chip chip-purple">Subject</span>
      <span class="symbol">+</span>
      <span class="formula-chip chip-blue">have / has</span>
      <span class="symbol">+</span>
      <span class="formula-chip chip-green">Past Participle</span>
      <span class="symbol">=</span>
      <span class="formula-chip chip-gray">Present Perfect</span>
    </div>

    
    <div class="example-row">
      <div class="pill pill-purple">
        <span class="pill-word" id="subjWord">Maya</span>
        <span class="pill-tag">Subject</span>
      </div>
      <span class="symbol">+</span>
      <div class="pill pill-blue">
        <span class="pill-word" id="verbWord">has</span>
        <span class="pill-tag">Helping Verb</span>
      </div>
      <span class="symbol">+</span>
      <div class="pill pill-green">
        <span class="pill-word" id="partWord">finished</span>
        <span class="pill-tag">Past Participle</span>
      </div>
      <span class="symbol">+</span>
      <div class="pill pill-gray">
        <span class="pill-word" id="objWord">her project</span>
        <span class="pill-tag">Object</span>
      </div>
    </div>
  </div>

  
  <div class="result-container">
    <div class="result-badge" id="resultBadge">
      <span class="result-dot"></span>
      <span id="resultText">Result: The project is done now!</span>
    </div>
  </div>

  <script>
    const data = [
      {
        subject: "Maya",
        helping: "has",
        participle: "finished",
        object: "her project",
        result: "Result: The project is done now!"
      },
      {
        subject: "They",
        helping: "have",
        participle: "cleaned",
        object: "the room",
        result: "Result: The room is clean now!"
      },
      {
        subject: "I",
        helping: "have",
        participle: "lost",
        object: "my key",
        result: "Result: Locked outside right now!"
      }
    ];

    function setExample(index) {
      const item = data[index];
      document.getElementById('subjWord').textContent = item.subject;
      document.getElementById('verbWord').textContent = item.helping;
      document.getElementById('partWord').textContent = item.participle;
      document.getElementById('objWord').textContent = item.object;
      document.getElementById('resultText').textContent = item.result;

      const tabs = document.querySelectorAll('.tab-btn');
      tabs.forEach((tab, i) => {
        if (i === index) tab.classList.add('active');
        else tab.classList.remove('active');
      });
    }
  </script>
</body>
</html>

OGE.6.L.2

Aligned learning resources

Related diagrams