.container {
            max-width: 800px;
            margin: 0 auto;
            background: white;
            padding: 20px;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }
        .progress-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.5);
            display: flex;
            justify-content: center;
            align-items: center;
            z-index: 9999;
        }
        .progress-modal {
            background: white;
            padding: 30px;
            border-radius: 8px;
            text-align: center;
            box-shadow: 0 4px 20px rgba(0,0,0,0.3);
            min-width: 300px;
        }
        .progress-bar-container {
            width: 100%;
            height: 20px;
            background-color: #e0e0e0;
            border-radius: 10px;
            margin: 20px 0;
            overflow: hidden;
        }
        .progress-bar {
            height: 100%;
            background: linear-gradient(90deg, #4CAF50, #8BC34A);
            width: 0%;
            transition: width 0.3s ease;
        }
        .progress-text {
            font-size: 16px;
            margin: 10px 0;
            color: #333;
        }
        .btn {
            background-color: #4CAF50;
            color: white;
            padding: 10px 20px;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-size: 16px;
            margin: 5px;
        }
        .btn:hover {
            background-color: #45a049;
        }
        .data-item {
            padding: 10px;
            margin: 5px 0;
            background-color: #f9f9f9;
            border-left: 4px solid #4CAF50;
        }