/* General Body */
  body { 
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; 
    background: #f0f2f5; 
    color: #333;
  }
  /* Textarea */
  textarea { 
    width: 100%; 
    min-height: 180px; 
    font-family: monospace; 
    margin-bottom: 12px; 
    margin-top: 20px;
    font-size: 14px; 
    border: 1px solid #ccc; 
    border-radius: 8px;
    background: #fff;
    resize: vertical;
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.1);
  }

  /* Output */
  pre { 
    background: #fff; 
    padding: 12px; 
    border-radius: 8px;
    border: 1px solid #ccc; 
    white-space: pre-wrap; 
    word-wrap: break-word; 
    max-height: 100%; 
    overflow-y: auto; 
    font-size: 14px;
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.1);
  }

  /* Button */
  button { 
    padding: 8px 16px; 
    cursor: pointer; 
    font-size: 15px; 
    border-radius: 6px; 
    border: none;
    background-color: #1a73e8; 
    color: #fff; 
    transition: background 0.2s ease;
    margin-bottom: 15px;
  }

  button:hover {
    background-color: #1669c1;
  }

  /* Layout */
  .container {
    max-width: 95%;
    margin: auto;
  }

  .note {
    font-size: 13px;
    color: #555;
    margin-bottom: 10px;
  }