:root {
            --primary: #6c5ce7;
            --secondary: #a29bfe;
            --dark: #2d3436;
            --light: #f5f6fa;
            --success: #00b894;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            background-color: var(--dark);
            color: var(--light);
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 20px;
        }
        
        #main {
            background: rgba(45, 52, 54, 0.8);
            border-radius: 15px;
            padding: 30px;
            width: 100%;
            max-width: 600px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
            border: 1px solid rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
        }
        
        h2 {
            color: var(--secondary);
            margin-bottom: 25px;
            text-align: center;
            font-weight: 600;
        }
        
        #sub-main {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        
        .download-card {
            background: rgba(108, 92, 231, 0.1);
            border-radius: 10px;
            padding: 20px;
            border: 1px solid var(--primary);
        }
        
        .file-info {
            display: flex;
            justify-content: space-between;
            margin-bottom: 15px;
        }
        
        .progress-container {
            width: 100%;
            height: 10px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 5px;
            overflow: hidden;
            margin-bottom: 10px;
        }
        
        .progress-bar {
            height: 100%;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            width: 0%;
            border-radius: 5px;
            transition: width 0.3s ease;
        }
        
        .progress-text {
            font-size: 12px;
            color: var(--secondary);
            text-align: right;
        }
        
        .btn {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
            border: none;
            padding: 12px 25px;
            border-radius: 5px;
            cursor: pointer;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-top: 10px;
            transition: all 0.3s ease;
            width: 100%;
        }
        
        .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(108, 92, 231, 0.4);
        }
        
        .btn:disabled {
            background: gray;
            cursor: not-allowed;
            transform: none;
            box-shadow: none;
        }
        
        .status {
            margin-top: 15px;
            font-size: 14px;
            text-align: center;
            color: var(--secondary);
        }
        
        .file-size {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.7);
        }
        
        .completed {
            color: var(--success);
            font-weight: bold;
        }