.gradient-bg {
            background: linear-gradient(135deg, #dbeafe 0%, #e0e7ff 100%);
        }
        
        .card {
            background: white;
            border-radius: 12px;
            box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
        }
        
        .btn {
            transition: all 0.3s ease;
            font-weight: 500;
            border-radius: 8px;
            padding: 12px 24px;
            border: none;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        
        .btn:disabled {
            opacity: 0.5;
            cursor: not-allowed;
        }
        
        .btn-primary {
            background-color: #3b82f6;
            color: white;
        }
        
        .btn-primary:hover:not(:disabled) {
            background-color: #2563eb;
            transform: translateY(-1px);
        }
        
        .btn-success {
            background-color: #10b981;
            color: white;
        }
        
        .btn-success:hover:not(:disabled) {
            background-color: #059669;
            transform: translateY(-1px);
        }
        
        .btn-danger {
            background-color: #ef4444;
            color: white;
        }
        
        .btn-danger:hover:not(:disabled) {
            background-color: #dc2626;
            transform: translateY(-1px);
        }
        
        .progress-bar {
            width: 100%;
            height: 12px;
            background-color: #e5e7eb;
            border-radius: 6px;
            overflow: hidden;
        }
        
        .progress-fill {
            height: 100%;
            background-color: #3b82f6;
            transition: width 0.3s ease;
        }
        
        .tab-button {
            flex: 1;
            padding: 12px 16px;
            border-radius: 8px;
            font-weight: 500;
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }
        
        .tab-button.active {
            background-color: #3b82f6;
            color: white;
            box-shadow: 0 2px 4px rgba(59, 130, 246, 0.3);
        }
        
        .tab-button:not(.active) {
            color: #6b7280;
            background-color: transparent;
        }
        
        .tab-button:not(.active):hover {
            color: #374151;
            background-color: #f9fafb;
        }
        
        .status-message {
            padding: 16px;
            border-radius: 8px;
            font-weight: 500;
        }
        
        .status-success {
            background-color: #ecfdf5;
            color: #065f46;
            border: 1px solid #a7f3d0;
        }
        
        .status-error {
            background-color: #fef2f2;
            color: #991b1b;
            border: 1px solid #fca5a5;
        }
        
        .status-info {
            background-color: #eff6ff;
            color: #1e40af;
            border: 1px solid #93c5fd;
        }
        
        .video-container {
            position: relative;
            background-color: #f3f4f6;
            border-radius: 8px;
            overflow: hidden;
        }
        
        .video-overlay {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-color: rgba(0, 0, 0, 0.5);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            text-align: center;
        }
        
        .spinner {
            animation: spin 1s linear infinite;
        }
        
        @keyframes spin {
            from { transform: rotate(0deg); }
            to { transform: rotate(360deg); }
        }
        
        .result-card {
            display: inline-flex;
            align-items: center;
            padding: 16px 24px;
            border-radius: 8px;
            font-size: 18px;
            font-weight: 500;
            gap: 12px;
        }
        
        .result-success {
            background-color: #dcfce7;
            color: #166534;
        }
        
        .result-error {
            background-color: #fee2e2;
            color: #991b1b;
        }
        
        .hidden {
            display: none !important;
        }
        
        input[type="text"] {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #d1d5db;
            border-radius: 8px;
            font-size: 16px;
            transition: all 0.3s ease;
        }
        
        input[type="text"]:focus {
            outline: none;
            border-color: #3b82f6;
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
        }
        
        input[type="text"]:disabled {
            background-color: #f9fafb;
            color: #6b7280;
        }