document.addEventListener('DOMContentLoaded', function () {
    // Mobile Menü Toggle
    var toggle = document.getElementById('menuToggle');
    var nav = document.getElementById('siteNav');
    if (toggle && nav) {
        toggle.addEventListener('click', function () {
            nav.classList.toggle('open');
        });
    }

    // Lazy Loading für ältere Browser
    if ('loading' in HTMLImageElement.prototype) return;
    document.querySelectorAll('img[loading="lazy"]').forEach(function (img) {
        img.src = img.src;
    });
});