(() => {
  const form = document.querySelector(".notify");
  const note = document.getElementById("notify-note");
  if (!form || !note) return;

  form.addEventListener("submit", (event) => {
    event.preventDefault();
    const email = form.querySelector("input[type='email']");
    if (!(email instanceof HTMLInputElement) || !email.value.trim()) return;
    note.hidden = false;
    email.value = "";
    email.blur();
  });
})();