Initial StaySense landing page

script.js

@@ -0,0 +1,29 @@
+const toggle = document.getElementById('navToggle');
+const mobile = document.getElementById('navMobile');
+
+function closeMobileMenu() {
+  if (!toggle || !mobile) return;
+  toggle.setAttribute('aria-expanded', 'false');
+  toggle.setAttribute('aria-label', 'Menü öffnen');
+  mobile.hidden = true;
+}
+
+toggle?.addEventListener('click', () => {
+  const expanded = toggle.getAttribute('aria-expanded') === 'true';
+  toggle.setAttribute('aria-expanded', String(!expanded));
+  toggle.setAttribute('aria-label', expanded ? 'Menü öffnen' : 'Menü schließen');
+  mobile.hidden = expanded;
+});
+
+document.addEventListener('keydown', (event) => {
+  if (event.key === 'Escape') closeMobileMenu();
+});
+
+document.addEventListener('click', (event) => {
+  if (!mobile || mobile.hidden) return;
+  if (!mobile.contains(event.target) && !toggle?.contains(event.target)) closeMobileMenu();
+});
+
+mobile?.querySelectorAll('a').forEach((a) => {
+  a.addEventListener('click', closeMobileMenu);
+});