(() => {
  const toggle = document.getElementById('mobileToggle');
  const nav = document.getElementById('siteNav');

  if (toggle && nav) {
    toggle.addEventListener('click', () => {
      const expanded = toggle.getAttribute('aria-expanded') === 'true';
      toggle.setAttribute('aria-expanded', String(!expanded));
      nav.classList.toggle('open');
    });

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

  const reveals = document.querySelectorAll('[data-reveal]');
  if ('IntersectionObserver' in window && reveals.length) {
    const observer = new IntersectionObserver((entries) => {
      entries.forEach((entry) => {
        if (entry.isIntersecting) {
          entry.target.classList.add('is-visible');
          observer.unobserve(entry.target);
        }
      });
    }, { threshold: 0.12 });

    reveals.forEach((el) => observer.observe(el));
  } else {
    reveals.forEach((el) => el.classList.add('is-visible'));
  }

  const parallaxEls = document.querySelectorAll('[data-parallax]');
  if (parallaxEls.length) {
    const onScroll = () => {
      const y = window.scrollY || 0;
      parallaxEls.forEach((el) => {
        const speed = Number(el.getAttribute('data-parallax')) || 0;
        el.style.transform = `translateY(${y * speed}px)`;
      });
    };
    onScroll();
    window.addEventListener('scroll', onScroll, { passive: true });
  }

  const contactForm = document.getElementById('contactForm');
  const status = document.getElementById('formStatus');
  const endpoint = 'https://api.corben.world/forms/af90392e-9399-4778-9b80-9eed83580f1d/submit';

  if (contactForm && status) {
    contactForm.addEventListener('submit', async (event) => {
      event.preventDefault();

      if (!contactForm.checkValidity()) {
        status.textContent = 'Please complete all required fields.';
        status.className = 'form-status error';
        contactForm.reportValidity();
        return;
      }

      const payload = Object.fromEntries(new FormData(contactForm).entries());
      status.textContent = 'Sending...';
      status.className = 'form-status pending';

      try {
        const response = await fetch(endpoint, {
          method: 'POST',
          headers: { 'Content-Type': 'application/json' },
          body: JSON.stringify(payload)
        });

        if (!response.ok) throw new Error('Submission failed');

        status.textContent = 'Thank you. Your inquiry was submitted successfully.';
        status.className = 'form-status success';
        contactForm.reset();
      } catch (error) {
        status.textContent = 'Unable to submit right now. Please try again.';
        status.className = 'form-status error';
      }
    });
  }
})();