Function openSidebar

script.js:400–405

()

  if (!menuBtn || !sidebar || !overlay) return;

  function openSidebar() {
    sidebar.classList.add("open");
    overlay.classList.add("visible");
    menuBtn.classList.add("open");
    document.body.style.overflow = "hidden";
  }

  function closeSidebar() {
    sidebar.classList.remove("open");