.custom-popup-container {
            position: fixed;
            bottom: 20px;
            right: 20px;
            z-index: 999999;
            transition: all 0.3s ease;
        }

        .custom-popup {
            width: 650px;
            height: 600px;
            background: white;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.2);
            overflow: hidden;
            display: none;
        }

        .custom-popup-header {
            background: #2c3e50;
            color: white;
            padding: 10px 15px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .custom-popup-close {
            background: none;
            border: none;
            color: white;
            font-size: 20px;
            cursor: pointer;
            padding: 0;
        }

        .custom-popup-iframe {
            width: 100%;
            height: calc(100% - 40px);
            border: none;
        }

        .custom-popup-button {
            background: #2c3e50;
            color: white;
            border: none;
            padding: 12px 20px;
            border-radius: 5px;
            cursor: pointer;
            font-weight: bold;
            display: none;
            box-shadow: 0 2px 5px rgba(0,0,0,0.2);
        }

        @media (max-width: 480px) {
            .custom-popup {
                width: 300px;
                height: 400px;
            }
        }