ss="chat-message">
        <strong>System:</strong>
        <div class="message-content">Welcome! You are authenticated and can start chatting.</div>
      </div>
    </div>

    <div>
      <input type="text" id="chat-input" placeholder="Type your message..." />
      <button id="send-button">Send</button>
    </div>

    <script>
      // Simple chat simulation
      document.getElementById('send-button').addEventListener('click', function () {
        const input = document.getElementById('chat-input');
