change html

js/site.js

@@ -0,0 +1,21 @@
+(function () {
+  var toggle = document.querySelector("[data-menu-toggle]");
+  var menu = document.querySelector("[data-mobile-menu]");
+  if (toggle && menu) {
+    toggle.addEventListener("click", function () {
+      var isOpen = menu.classList.toggle("is-open");
+      toggle.setAttribute("aria-expanded", String(isOpen));
+    });
+  }
+
+  document.querySelectorAll("[data-theme-toggle]").forEach(function (btn) {
+    btn.addEventListener("click", function () {
+      var cur = document.documentElement.getAttribute("data-theme") === "dark" ? "dark" : "light";
+      var next = cur === "dark" ? "light" : "dark";
+      document.documentElement.setAttribute("data-theme", next);
+      try {
+        localStorage.setItem("theme", next);
+      } catch (_) {}
+    });
+  });
+})();