.container {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            min-height: 90vh;
        }
        
        .header {
            text-align: center;
            margin-bottom: 30px;
        }
        
        .header h1 {
            font-size: 28px;
            color: #333;
            margin-bottom: 10px;
        }
        
        .header p {
            color: #666;
            font-size: 16px;
        }
        
        .audio-info {
            background-color: #f9f9f9;
            border-radius: 12px;
            padding: 20px;
            width: 100%;
            margin-bottom: 25px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
        }
        
        .audio-info h2 {
            font-size: 20px;
            margin-bottom: 15px;
            color: #333;
        }
        
        .audio-info p {
            margin-bottom: 8px;
            color: #555;
        }
        
        .audio-info .category {
            display: inline-block;
            background-color: #e0f0ff;
            color: #0066cc;
            padding: 4px 10px;
            border-radius: 20px;
            font-size: 14px;
        }
        
        .audio-player {
            width: 100%;
            margin-bottom: 30px;
        }
        
        .audio-player audio {
            width: 100%;
            border-radius: 8px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
        }
        
        .button-container {
            display: flex;
            gap: 15px;
            flex-wrap: wrap;
            justify-content: center;
        }
        
        .download-btn {
            background-color: #28a745;
            color: white;
            border: none;
            padding: 12px 25px;
            font-size: 16px;
            border-radius: 30px;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 12px rgba(40, 167, 69, 0.3);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .download-btn:hover {
            background-color: #218838;
            transform: translateY(-2px);
            box-shadow: 0 6px 15px rgba(40, 167, 69, 0.4);
        }
        
        .download-btn:active {
            transform: translateY(0);
        }
        
        .download-btn:disabled {
            background-color: #6c757d;
            cursor: not-allowed;
            transform: none;
            box-shadow: none;
        }
        
        .refresh-btn {
            background-color: #4a6cf7;
            color: white;
            border: none;
            padding: 12px 30px;
            font-size: 16px;
            border-radius: 30px;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 12px rgba(74, 108, 247, 0.3);
        }
        
        .refresh-btn:hover {
            background-color: #3a5ce5;
            transform: translateY(-2px);
            box-shadow: 0 6px 15px rgba(74, 108, 247, 0.4);
        }
        
        .refresh-btn:active {
            transform: translateY(0);
        }
        
        .loading {
            text-align: center;
            margin: 20px 0;
            color: #666;
        }
        
        .error {
            text-align: center;
            color: #e74c3c;
            margin: 20px 0;
        }
        
        .success-message {
            text-align: center;
            color: #28a745;
            margin: 10px 0;
            font-size: 14px;
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        
        .success-message.show {
            opacity: 1;
        }
        
        @media (max-width: 600px) {
            body {
                padding: 15px;
            }
            
            .header h1 {
                font-size: 24px;
            }
            
            .audio-info h2 {
                font-size: 18px;
            }
            
            .button-container {
                flex-direction: column;
                width: 100%;
            }
            
            .download-btn, .refresh-btn {
                width: 100%;
                justify-content: center;
            }
        }