`; prevBtn.disabled = index === 0; nextBtn.disabled = index === values.length - 1; } prevBtn.addEventListener('click', () => { if (currentIndex > 0) { currentIndex--; renderCard(currentIndex); } }); nextBtn.addEventListener('click', () => { if (currentIndex < values.length - 1) { currentIndex++; renderCard(currentIndex); } }); // Initial render renderCard(currentIndex); })();