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(() => {
  const dialog = document.querySelector('[data-login-dialog]');
  if (dialog) {
    const form = dialog.querySelector('[data-login-form]');
    const email = dialog.querySelector('[data-login-email]');
    const error = dialog.querySelector('[data-login-error]');
    const open = () => {
      if (!dialog.open) dialog.showModal();
      email.focus();
    };

    document.querySelectorAll('[data-login-open]').forEach((control) => {
      control.addEventListener('click', open);
    });
    dialog.querySelector('[data-login-close]').addEventListener('click', () => dialog.close());
    dialog.addEventListener('click', (event) => {
      if (event.target === dialog) dialog.close();
    });

    form.addEventListener('submit', (event) => {
      if (form.querySelector('input[type="password"]')) return;
      event.preventDefault();
      if (!email.checkValidity()) {
        error.textContent = 'Enter a valid email address.';
        error.hidden = false;
        return;
      }
      error.hidden = true;
      email.readOnly = true;
      const label = document.createElement('label');
      label.dataset.loginPassword = '';
      label.textContent = 'Password ';
      const required = document.createElement('span');
      required.setAttribute('aria-hidden', 'true');
      required.textContent = '*';
      const password = document.createElement('input');
      password.type = 'password';
      password.name = 'password';
      password.placeholder = 'Enter your password';
      password.required = true;
      label.append(required, password);
      form.querySelector('[data-login-continue]').before(label);
      password.focus();
    });

    if (dialog.dataset.openOnLoad === 'true') open();
  }

  const signup = document.querySelector('[data-signup-dialog]');
  if (signup) {
    const open = () => { if (!signup.open) signup.showModal(); };
    signup.querySelector('[data-signup-close]').addEventListener('click', () => signup.close());
    signup.addEventListener('click', (event) => { if (event.target === signup) signup.close(); });
    if (signup.dataset.openOnLoad === 'true') open();
  }
})();