document.addEventListener('DOMContentLoaded',function(){
const toggle=document.querySelector('.hc-nav-toggle'),nav=document.getElementById('primary-nav');
if(!toggle||!nav)return;
document.body.classList.add('hc-nav-ready');
function setOpen(open){document.body.classList.toggle('hc-nav-open',open);toggle.setAttribute('aria-expanded',String(open));}
toggle.addEventListener('click',()=>setOpen(toggle.getAttribute('aria-expanded')!=='true'));
nav.addEventListener('click',event=>{if(event.target.closest('a'))setOpen(false);});
document.addEventListener('keydown',event=>{if(event.key==='Escape'&&toggle.getAttribute('aria-expanded')==='true'){setOpen(false);toggle.focus();}});
});
