.container {
            width: 100%;
            max-width: 800px;
            background: rgba(255, 255, 255, 0.95);
            border-radius: 16px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
            padding: 30px;
            margin-top: 20px;
        }
        
        h1 {
            text-align: center;
            color: #333;
            margin-bottom: 10px;
            font-size: 2.5rem;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
        }
        
        .subtitle {
            text-align: center;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 30px;
            font-size: 1.1rem;
            color: #333;
        }
        
        .input-group {
            margin-bottom: 25px;
        }
        
        label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: #444;
        }
        
        input[type="text"] {
            width: 100%;
            padding: 14px 16px;
            border: 2px solid #e1e5e9;
            border-radius: 10px;
            font-size: 16px;
            transition: all 0.3s;
        }
        
        input[type="text"]:focus {
            border-color: #4d90fe;
            box-shadow: 0 0 0 2px rgba(77, 144, 254, 0.2);
            outline: none;
        }
        
        button {
            background: linear-gradient(to right, #6a11cb, #2575fc);
            color: white;
            border: none;
            padding: 14px 28px;
            border-radius: 10px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            width: 100%;
            box-shadow: 0 4px 15px rgba(37, 117, 252, 0.4);
        }
        
        button:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(37, 117, 252, 0.6);
        }
        
        button:active {
            transform: translateY(0);
        }
        
        .result {
            margin-top: 30px;
            display: none;
        }
        
        .result.active {
            display: block;
            animation: fadeIn 0.5s ease;
        }
        
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }
        
        .video-container {
            position: relative;
            width: 100%;
            margin-bottom: 20px;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        
        video {
            width: 100%;
            display: block;
            background: #000;
        }
        
        .download-btn {
            display: inline-block;
            background: linear-gradient(to right, #00b09b, #96c93d);
            color: white;
            text-decoration: none;
            padding: 12px 24px;
            border-radius: 8px;
            font-weight: 600;
            margin-top: 10px;
            text-align: center;
            transition: all 0.3s;
            box-shadow: 0 4px 10px rgba(0, 176, 155, 0.4);
        }
        
        .download-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 15px rgba(0, 176, 155, 0.6);
        }
        
        .loading {
            text-align: center;
            padding: 20px;
            display: none;
        }
        
        .loading.active {
            display: block;
        }
        
        .spinner {
            border: 4px solid rgba(0, 0, 0, 0.1);
            border-radius: 50%;
            border-top: 4px solid #2575fc;
            width: 40px;
            height: 40px;
            animation: spin 1s linear infinite;
            margin: 0 auto 15px;
        }
        
        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }
        
        .error {
            background: #ffeaea;
            color: #d63031;
            padding: 15px;
            border-radius: 10px;
            margin-top: 20px;
            display: none;
            border-left: 4px solid #d63031;
        }
        
        .error.active {
            display: block;
            animation: fadeIn 0.5s ease;
        }
        
        footer {
            margin-top: 30px;
            text-align: center;
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.9rem;
        }
        
        @media (max-width: 600px) {
            .container {
                padding: 20px;
            }
            
            h1 {
                font-size: 2rem;
            }
        }