document.addEventListener('DOMContentLoaded', function() {
var nav = document.getElementById('site-navigation');
if (!nav) return;
var button = nav.querySelector('button.menu-toggle');
var menu = nav.querySelector('ul.nav-menu');
if (!button || !menu) return;
// Menü auf- und zuklappen
button.addEventListener('click', function() {
menu.classList.toggle('toggled-on');
button.classList.toggle('toggled-on');
var expanded = button.getAttribute('aria-expanded') === 'true';
button.setAttribute('aria-expanded', !expanded);
});