body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}body{font-family:Arial,sans-serif;background-color:#1a1a1a;margin:0;padding:0}.container{display:flex;justify-content:center;align-items:center;min-height:100vh}.card{background:#2d2d2d;padding:24px;border-radius:12px;box-shadow:0 4px 16px #0000004d;width:100%;max-width:400px;color:#e0e0e0}h2{text-align:center;margin-bottom:12px}.status{text-align:right;font-size:14px;color:#4ade80;margin-bottom:16px}.section{margin-bottom:20px}.input-row{display:flex;gap:8px;margin-top:6px}input[type=text]{flex:1;padding:10px;border:1px solid #555;border-radius:6px;font-size:14px;background-color:#3a3a3a;color:#e0e0e0}button{padding:10px 14px;font-size:14px;background-color:#007bff;color:#fff;border:none;border-radius:6px;cursor:pointer}button:disabled{background-color:#555;cursor:not-allowed}.call-panel{background:#3a3a3a;padding:12px;border-radius:8px;margin-bottom:16px;text-align:center;color:#e0e0e0}.button-row{display:flex;justify-content:center;gap:12px;margin-top:10px}.audio{display:none}.footer{text-align:center;font-size:12px;color:#999;margin-top:20px}.dtmf-panel{margin-top:16px;padding:16px;background:#3a3a3a;border-radius:8px;border:1px solid #555}.dtmf-display{display:flex;gap:8px;margin-bottom:12px}.dtmf-input{flex:1;padding:8px;border:1px solid #555;border-radius:4px;font-size:14px;font-family:monospace;background:#2d2d2d;color:#e0e0e0}.dtmf-clear{padding:8px 12px;font-size:12px;background-color:#6c757d;color:#fff;border:none;border-radius:4px;cursor:pointer}.dtmf-clear:hover{background-color:#5a6268}.dtmf-keypad{display:flex;flex-direction:column;gap:8px}.dtmf-row{display:flex;gap:8px;justify-content:center}.dtmf-key{width:50px;height:50px;border:1px solid #555;border-radius:8px;background:#2d2d2d;font-size:16px;font-weight:700;color:#e0e0e0;cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center;transition:all .2s ease}.dtmf-key:hover{background-color:#4a4a4a;transform:translateY(-1px);box-shadow:0 2px 4px #0000004d}.dtmf-key:active{transform:translateY(0);background-color:#555}.dtmf-key small{font-size:8px;color:#999;margin-top:2px}.incoming-call-panel{background:#4a3a1a;border:2px solid #d4af37;border-radius:12px;padding:20px;margin-bottom:16px;text-align:center;animation:pulse 2s infinite}@keyframes pulse{0%{box-shadow:0 0 #d4af37b3}70%{box-shadow:0 0 0 10px #d4af3700}to{box-shadow:0 0 #d4af3700}}.incoming-call-info h3{margin:0 0 8px;color:#d4af37;font-size:18px}.incoming-call-info p{margin:0 0 16px;color:#d4af37;font-size:16px;font-weight:700}.incoming-call-buttons{display:flex;justify-content:center;gap:16px}.accept-call{background-color:#28a745;color:#fff;padding:12px 24px;font-size:16px;font-weight:700;border:none;border-radius:8px;cursor:pointer;transition:all .2s ease}.accept-call:hover{background-color:#218838;transform:translateY(-1px)}.decline-call{background-color:#dc3545;color:#fff;padding:12px 24px;font-size:16px;font-weight:700;border:none;border-radius:8px;cursor:pointer;transition:all .2s ease}.decline-call:hover{background-color:#c82333;transform:translateY(-1px)}