body {
    font-family: Arial, sans-serif;
    background: #f4f4f4;
    margin: 0;
  }
  header {
    background: #222;
    color: #fff;
    font-weight: bold;
    padding: 15px;
    font-size: 22px;
  }
  nav {
    background: #333;
    padding: 10px;
  }
  nav button {
    margin: 5px;
    padding: 8px 12px;
    border: none;
    cursor: pointer;
    background: #555;
    color: #fff;
  }
  nav button:hover {
    background: #ff9800;
  }
  .container {
    padding: 15px;
  }
  textarea {
    width: 100%;
    height: 200px;
    padding: 10px;
    font-size: 16px;
  }
  .actions button {
    margin: 5px;
    padding: 8px 14px;
    cursor: pointer;
  }
  .stats {
    margin-top: 10px;
    color: #555;
  }

  .dark {
  background: #121212;
  color: #eee;
}

.dark textarea {
  background: #1e1e1e;
  color: #fff;
}