 Update download info
                updateDownloadInfo();
                
            } catch (error) {
                console.error('Error loading data:', error);
                document.querySelector('.loading').innerHTML = `
                    <div class="alert alert-danger">
                        <i class="bi bi-exclamation-triangle me-2"></i>
                        <strong>Lỗi:</strong> ${error.message}
                        <br><small class="mt-2 d-block">
                            Vui 