Formula: ${formula.charAt(0).toUpperCase() + formula.slice(1)}

Ideal Weight: ${idealWeight.toFixed(1)} kg

`; resultSection.innerHTML = resultText; resultSection.style.display = 'block'; pdfButton.disabled = false; }; const downloadPDF = () => { if (!currentResults.formula || !resultSection.innerText) { errorMessage.textContent = 'No results available to download.'; errorMessage.style.display = 'block'; return; } try { const { jsPDF } = window.jspdf; if (!jsPDF) { console.error('jsPDF is not loaded.'); errorMessage.textContent = 'PDF generation failed. Please try again.'; errorMessage.style.display = 'block'; return; } const doc = new jsPDF(); doc.setFont('helvetica', 'bold'); doc.setFontSize(16); doc.text('Ideal Weight Converter', 20, 20); doc.setLineWidth(0.5); doc.line(20, 25, 190, 25); doc.setFont('helvetica', 'normal'); doc.setFontSize(12); doc.text(`Age: ${currentResults.age.toFixed(0)} years`, 20, 40); doc.text(`Height: ${currentResults.height.toFixed(1)} cm`, 20, 50); doc.text(`Gender: ${currentResults.gender.charAt(0).toUpperCase() + currentResults.gender.slice(1)}`, 20, 60); doc.text(`Formula: ${currentResults.formula.charAt(0).toUpperCase() + currentResults.formula.slice(1)}`, 20, 70); doc.text(`Ideal Weight: ${currentResults.idealWeight.toFixed(1)} kg`, 20, 80); doc.setDrawColor(200); doc.rect(15, 35, 180, 50); doc.save('ideal_weight.pdf'); } catch (error) { console.error('PDF generation error:', error); errorMessage.textContent = 'Failed to generate PDF. Please try again.'; errorMessage.style.display = 'block'; } }; const resetForm = () => { converterForm.reset(); resultSection.innerHTML = ''; resultSection.style.display = 'none'; errorMessage.style.display = 'none'; pdfButton.disabled = true; currentResults = { age: 0, height: 0, gender: '', formula: '', idealWeight: 0 }; ageInput.focus(); }; convertButton.addEventListener('click', calculateIdealWeight); resetButton.addEventListener('click', resetForm); pdfButton.addEventListener('click', downloadPDF); converterForm.addEventListener('submit', (e) => { e.preventDefault(); calculateIdealWeight(); }); }); })();