`; proofreadResultContainer.innerHTML = resultsHtml; proofreadPdfDownloadBtn.classList.remove('hidden'); }; // --- PDF Download Functions --- const downloadPDF = async (elementId, fileName) => { const { jsPDF } = window.jspdf; const pdfOutput = document.getElementById(elementId); if (!pdfOutput) return; const canvas = await html2canvas(pdfOutput, { scale: 2, backgroundColor: '#ffffff' }); const imgData = canvas.toDataURL('image/png'); const pdf = new jsPDF({ orientation: 'portrait', unit: 'pt', format: 'a4' }); const pdfWidth = pdf.internal.pageSize.getWidth(); const imgProps = pdf.getImageProperties(imgData); const pdfHeight = (imgProps.height * pdfWidth) / imgProps.width; pdf.addImage(imgData, 'PNG', 40, 40, pdfWidth - 80, pdfHeight - 80); pdf.save(fileName); }; // --- Event Listeners --- generateQuizBtn.addEventListener('click', handleQuizGeneration); quizPdfDownloadBtn.addEventListener('click', () => downloadPDF('quizPdfOutput', 'Quiz-Results.pdf')); proofreadBtn.addEventListener('click', handleProofread); proofreadPdfDownloadBtn.addEventListener('click', () => downloadPDF('proofreadPdfOutput', 'Proofreading-Analysis.pdf')); // Initialize view showTab('quizTab'); });