 notification
            showNotification(`Đã tải xuống ${filename} thành công!`, 'success');
        }

        // Update download info
        function updateDownloadInfo() {
            document.getElementById('provinceCount').textContent = Object.keys(provincesData).length;
            document.getElementById('wardCount').textContent = Object.keys(wardsData).length;
        }

        // Show notification
        function showNotification(message, type = 'info') {
            const notification