/* Popup Styling */
        .popup-overlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-color: rgba(0, 0, 0, 0.7);
            display: flex;
            justify-content: center;
            align-items: center;
            z-index: 9999;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
        }
        
        .popup-overlay.active {
            opacity: 1;
            visibility: visible;
        }
        
        .popup-content {
            background-color: #fff;
            border-radius: 12px;
            padding: 30px;
            text-align: center;
            max-width: 90%;
            width: 400px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
            transform: scale(0.7);
            opacity: 0;
            transition: all 0.3s ease;
        }
        
        .popup-overlay.active .popup-content {
            transform: scale(1);
            opacity: 1;
        }
        
        .spinner {
            border: 4px solid rgba(0, 0, 0, 0.1);
            border-left-color: #4C84FF;
            border-radius: 50%;
            width: 50px;
            height: 50px;
            animation: spin 1s linear infinite;
            margin: 20px auto;
        }
        
        .popup-title {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 15px;
            color: #333;
        }
        
        .error-message {
            color: #e74c3c;
            font-weight: 500;
            margin-top: 10px;
        }
        
        @keyframes spin {
            to {
                transform: rotate(360deg);
            }
        }