// SIENA — shared site behavior

document.addEventListener('DOMContentLoaded', () => {
  initHeaderScroll();
  initMobileNav();
  initHeroReveal();
  initForms();
});

/* Give the sticky header a hairline + shadow once the page scrolls. */
function initHeaderScroll() {
  const header = document.querySelector('.site-header');
  if (!header) return;
  const setState = () => {
    header.classList.toggle('is-scrolled', window.scrollY > 8);
  };
  setState();
  window.addEventListener('scroll', setState, { passive: true });
}

/* Mobile nav toggle button. */
function initMobileNav() {
  const toggle = document.querySelector('.nav-toggle');
  const nav = document.querySelector('.main-nav');
  if (!toggle || !nav) return;

  toggle.addEventListener('click', () => {
    const isOpen = nav.classList.toggle('is-open');
    toggle.setAttribute('aria-expanded', String(isOpen));
    document.body.style.overflow = isOpen ? 'hidden' : '';
  });

  nav.querySelectorAll('a').forEach((link) => {
    link.addEventListener('click', () => {
      nav.classList.remove('is-open');
      toggle.setAttribute('aria-expanded', 'false');
      document.body.style.overflow = '';
    });
  });
}

/* One orchestrated reveal for the hero on first paint, not per-scroll. */
function initHeroReveal() {
  const hero = document.querySelector('.hero[data-reveal]');
  if (!hero) return;
  requestAnimationFrame(() => {
    requestAnimationFrame(() => hero.classList.add('is-revealed'));
  });
}

/* Support + lease inquiry forms: client-side confirmation only.
   No backend is wired up — this simulates a submission and shows
   the confirmation state so the page is demonstrable end to end. */
function initForms() {
  document.querySelectorAll('form[data-inquiry-form]').forEach((form) => {
    const status = form.querySelector('.form-status');
    form.addEventListener('submit', (event) => {
      event.preventDefault();
      if (!form.checkValidity()) {
        form.reportValidity();
        return;
      }
      const submitBtn = form.querySelector('button[type="submit"]');
      const originalLabel = submitBtn.textContent;
      submitBtn.disabled = true;
      submitBtn.textContent = 'Sending…';

      window.setTimeout(() => {
        form.reset();
        submitBtn.disabled = false;
        submitBtn.textContent = originalLabel;
        if (status) {
          status.textContent = form.dataset.successMessage ||
            "Thank you — we've received your message and will be in touch shortly.";
          status.classList.add('is-visible');
          status.setAttribute('tabindex', '-1');
          status.focus();
        }
      }, 650);
    });
  });
}