`; } }; // --- PDF Download Logic --- if (pdfDownloadButton) { pdfDownloadButton.addEventListener('click', () => { const { jsPDF } = window.jspdf; const pdfContent = document.getElementById('pdf-output'); if (!pdfContent) { console.error("PDF content area not found."); return; } html2canvas(pdfContent, { scale: 2, useCORS: true }).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 imgWidth = pdfWidth - 80; const imgHeight = canvas.height * imgWidth / canvas.width; let position = 40; pdf.setFont('Inter', 'bold'); pdf.setFontSize(18); pdf.text('Kidney Disease Risk Report', pdfWidth / 2, position, { align: 'center' }); position += 40; pdf.addImage(imgData, 'PNG', 40, position, imgWidth, imgHeight); position += imgHeight + 20; pdf.setFont('Inter', 'normal'); pdf.setFontSize(8); pdf.setTextColor(150); const disclaimer = 'This calculator provides an estimate for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.'; const splitDisclaimer = pdf.splitTextToSize(disclaimer, pdfWidth - 80); pdf.text(splitDisclaimer, 40, position); pdf.save('Kidney-Disease-Risk-Report.pdf'); }); }); } // --- Initial Load --- updateTabState(); });