function App() { // Smooth scroll with nav offset React.useEffect(() => { function onClick(e) { const a = e.target.closest('a[href^="#"]'); if (!a) return; const href = a.getAttribute('href'); if (!href || href === '#' || href.length < 2) return; const el = document.querySelector(href); if (!el) return; e.preventDefault(); const navH = 68; const y = el.getBoundingClientRect().top + window.scrollY - navH - 12; window.scrollTo({ top: y, behavior: 'smooth' }); history.replaceState(null, '', href); } document.addEventListener('click', onClick); return () => document.removeEventListener('click', onClick); }, []); return ( <>