`; }; // --- Tab & Navigation Logic --- function switchTab(targetTabId) { if (targetTabId === 'report') { renderReport(); } currentTab = targetTabId; tabs.forEach(tab => tab.classList.toggle('active', tab.dataset.tab === currentTab)); tabContents.forEach(content => content.classList.toggle('active', content.id === currentTab)); updateNavButtons(); } function updateNavButtons() { if (currentTab === 'input') { prevBtn.style.display = 'none'; nextBtn.style.display = 'inline-flex'; pdfButtonContainer.style.display = 'none'; } else { prevBtn.style.display = 'inline-flex'; nextBtn.style.display = 'none'; pdfButtonContainer.style.display = 'block'; } } // --- Event Handlers --- tabs.forEach(tab => tab.addEventListener('click', () => switchTab(tab.dataset.tab))); nextBtn.addEventListener('click', () => switchTab('report')); prevBtn.addEventListener('click', () => switchTab('input')); // --- PDF Download --- downloadPdfBtn.addEventListener('click', async () => { const { jsPDF } = window.jspdf; const doc = new jsPDF({ orientation: 'p', unit: 'mm', format: 'a4' }); const content = document.getElementById('pdf-content'); document.getElementById('pdf-date').textContent = `Report Generated: ${new Date().toLocaleString()}`; const canvas = await html2canvas(content, { scale: 2 }); const imgData = canvas.toDataURL('image/jpeg', 1.0); const imgProps = doc.getImageProperties(imgData); const pdfWidth = doc.internal.pageSize.getWidth() - 28; const pdfHeight = (imgProps.height * pdfWidth) / imgProps.width; doc.addImage(imgData, 'JPEG', 14, 15, pdfWidth, pdfHeight); document.getElementById('pdf-date').textContent = ''; doc.save(`GMB-Optimization-Report-${new Date().toISOString().slice(0,10)}.pdf`); }); // --- Initial Load --- renderChecklist(); updateNavButtons(); });