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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>E2E Test - Buttons</title>
  <style>
    .counter { font-size: 2em; margin: 20px 0; }
    button { padding: 10px 20px; margin: 5px; cursor: pointer; }
  </style>
</head>
<body>
  <h1>Buttons Test</h1>

  <section id="counter-section">
    <h2>Counter</h2>
    <div class="counter">Count: <span id="count">0</span></div>
    <button id="increment">Increment</button>
    <button id="decrement">Decrement</button>
    <button id="reset">Reset</button>
  </section>

  <section id="toggle-section">
    <h2>Toggle</h2>
    <button id="toggle-btn">Toggle visibility</button>
    <div id="toggle-content" style="display: block;">
      <p>This content can be toggled.</p>
    </div>
  </section>

  <section id="alert-section">
    <h2>Messages</h2>
    <button id="show-message">Show Message</button>
    <div id="message" style="display: none; padding: 10px; background: #e0f0e0; margin-top: 10px;">
      Message displayed successfully!
    </div>
  </section>

  <script>
    let count = 0;
    const countEl = document.getElementById('count');

    document.getElementById('increment').addEventListener('click', () => {
      count++;
      countEl.textContent = count;
    });

    document.getElementById('decrement').addEventListener('click', () => {
      count--;
      countEl.textContent = count;
    });

    document.getElementById('reset').addEventListener('click', () => {
      count = 0;
      countEl.textContent = count;
    });

    document.getElementById('toggle-btn').addEventListener('click', () => {
      const content = document.getElementById('toggle-content');
      content.style.display = content.style.display === 'none' ? 'block' : 'none';
    });

    document.getElementById('show-message').addEventListener('click', () => {
      document.getElementById('message').style.display = 'block';
    });
  </script>
</body>
</html>