body { font-family: Arial, sans-serif; padding: 20px; }
button { padding: 6px 12px; margin: 5px; }
input, textarea { padding: 6px; width: 100%; margin: 5px 0; }
.highlight { background-color: #fff6c1; }
.chatbox { border: 1px solid #ccc; padding: 10px; height: 300px; overflow-y: auto; margin-bottom: 10px; }