const header=document.querySelector('.site-header');
const toggle=document.querySelector('.menu-toggle');
const nav=document.querySelector('.main-nav');
window.addEventListener('scroll',()=>header.classList.toggle('scrolled',window.scrollY>30));
toggle?.addEventListener('click',()=>{
 const open=nav.classList.toggle('open');
 toggle.setAttribute('aria-expanded',String(open));
 toggle.setAttribute('aria-label',open?'Menü schließen':'Menü öffnen');
});
document.querySelectorAll('.main-nav a').forEach(a=>a.addEventListener('click',()=>nav.classList.remove('open')));
const io=new IntersectionObserver(entries=>entries.forEach(e=>{if(e.isIntersecting)e.target.classList.add('visible')}),{threshold:.12});
document.querySelectorAll('.reveal').forEach(el=>io.observe(el));
document.getElementById('year').textContent=new Date().getFullYear();