`; pdfWindow.document.open(); pdfWindow.document.write(pdfHtml); pdfWindow.document.close(); } // ─── Event Listeners ─── function setupListeners() { var inputs = [propertyPrice, depositPercent, completionDate, currencySelect]; for (var i = 0; i < inputs.length; i++) { if (inputs[i]) { inputs[i].addEventListener('input', calculate); inputs[i].addEventListener('change', calculate); } } for (var j = 0; j < paymentTerm.length; j++) { paymentTerm[j].addEventListener('change', calculate); } if (calculateBtn) { calculateBtn.addEventListener('click', function(e) { e.preventDefault(); var data = calculate(); if (!data.isValid) { alert('Please enter a valid property price, completion date, and a minimum deposit of 10% before generating the PDF.'); return; } generatePdfTab(data); }); } } // ─── Init ─── setDefaultDates(); setupListeners(); calculate(); } // DOM ready if (document.readyState === 'loading') { document.addEventListener('DOMContentLoaded', initCalculator); } else { initCalculator(); } })();