`;
placeholder.classList.add('hidden');
worldOutput.innerHTML = html;
worldOutput.classList.remove('hidden');
outputActions.classList.remove('hidden');
};
const downloadPDF = async () => {
const contentToPrint = document.getElementById('pdf-content');
if (!contentToPrint) return;
if (typeof window.jspdf === 'undefined' || typeof window.html2canvas === 'undefined') {
console.error("PDF generation library is not available.");
return;
}
try {
const { jsPDF } = window.jspdf;
const pdfCanvas = await html2canvas(contentToPrint, {
backgroundColor: '#111827',
scale: 2
});
const imgData = pdfCanvas.toDataURL('image/png');
const pdf = new jsPDF({ orientation: 'portrait', unit: 'pt', format: 'a4' });
const pdfWidth = pdf.internal.pageSize.getWidth();
const pdfHeight = (pdfCanvas.height * pdfWidth) / pdfCanvas.width;
pdf.addImage(imgData, 'PNG', 0, 0, pdfWidth, pdfHeight);
pdf.save('world-anvil.pdf');
} catch(err) {
console.error("PDF generation failed:", err);
}
};
// --- Event Listeners ---
nextBtn.addEventListener('click', () => navigate(1));
prevBtn.addEventListener('click', () => navigate(-1));
generateBtn.addEventListener('click', generateWorld);
pdfBtn.addEventListener('click', downloadPDF);
powerSourceSelect.addEventListener('change', (e) => {
if (e.target.value === 'magic') {
magicOptions.classList.remove('hidden');
techOptions.classList.add('hidden');
} else {
magicOptions.classList.add('hidden');
techOptions.classList.remove('hidden');
}
});
// --- Initial Setup ---
updateTabs();
});
