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'; } else { sites.forEach(site => { const siteCard = ` `; resultsList.innerHTML += siteCard; }); } } // --- PDF GENERATION --- /** * Generates a PDF from the content of the results tab. */ function generatePdf() { const { jsPDF } = window.jspdf; const content = document.getElementById('pdf-content'); html2canvas(content, { scale: 2, backgroundColor: '#ffffff' }).then(canvas => { const imgData = canvas.toDataURL('image/png'); const pdf = new jsPDF({ orientation: 'portrait', unit: 'pt', format: 'a4' }); const pdfWidth = pdf.internal.pageSize.getWidth(); const canvasWidth = canvas.width; const canvasHeight = canvas.height; const ratio = canvasWidth / canvasHeight; const imgHeight = (pdfWidth - 40) / ratio; // Subtract margins pdf.addImage(imgData, 'PNG', 20, 20, pdfWidth - 40, imgHeight); pdf.save('World-Heritage-Sites.pdf'); }).catch(err => { console.error("PDF generation failed:", err); }); } // Initial call to set button states and add listener updateNavButtons(); pdfDownloadButton.addEventListener('click', generatePdf); });