body { font-family: monospace; background: #111; color: #eee; padding: 2rem; }
textarea { width: 100%; padding: 1rem; background: #222; color: #0f0; border: none; }
button { padding: 0.75rem; background: crimson; color: white; border: none; cursor: pointer; }
iframe { width: 100%; height: 400px; margin-top: 1rem; border: 2px solid #444; background: white; }
#chat { margin-top: 2rem; background: #222; padding: 1rem; max-height: 300px; overflow: auto; }