round-color: #dc3545;
            transform: scale(0.95);
        }
        
        .voice-record-btn i {
            font-size: 24px;
        }
        
        .voice-record-label {
            text-align: center;
            margin-top: 10px;
            font-size: 14px;
            color: #6c757d;
        }
        
        .video-size-control {
            margin-top: 15px;
        }
        
        .recording-pulse {
            animation: pulse 1.5s infinite;
        }
        
        @keyframes p