document.addEventListener('DOMContentLoaded', function () {
  var form = document.getElementById('mepr_loginform');
  if (!form) return;
  var h1 = form.querySelector('h1');
  if (!h1) return;
  var notice = document.createElement('div');
  notice.style.cssText = 'background:#e8f4fd;border-left:4px solid #1E4ED8;padding:12px 16px;border-radius:8px;margin:10px 0 20px 0;font-size:14px;color:#1a1a1a;';
  notice.innerHTML = 'Existing members: Use your email address as both username and password on your first login.';
  h1.parentNode.insertBefore(notice, h1.nextSibling);
});