(() => {
  const root = document.body;
  const themeToggle = document.getElementById('themeToggle');
  const storedTheme = localStorage.getItem('pg-theme');
  if (storedTheme === 'light' || storedTheme === 'dark') {
    root.setAttribute('data-bs-theme', storedTheme);
  }
  const syncThemeButton = () => {
    if (!themeToggle) return;
    themeToggle.textContent = root.getAttribute('data-bs-theme') === 'dark' ? 'Modo claro' : 'Modo escuro';
  };
  syncThemeButton();
  themeToggle?.addEventListener('click', () => {
    const next = root.getAttribute('data-bs-theme') === 'dark' ? 'light' : 'dark';
    root.setAttribute('data-bs-theme', next);
    localStorage.setItem('pg-theme', next);
    syncThemeButton();
  });

  const video = document.getElementById('heroVideo');
  let rafId = null;
  const fadeWindow = 0.5;
  const monitorVideo = () => {
    if (video && Number.isFinite(video.duration) && video.duration > 0) {
      const current = video.currentTime || 0;
      const duration = video.duration;
      let opacity = 1;
      if (current < fadeWindow) opacity = current / fadeWindow;
      if (duration - current < fadeWindow) opacity = Math.max(0, (duration - current) / fadeWindow);
      video.style.opacity = String(Math.max(0, Math.min(1, opacity * 0.7)));
    }
    rafId = requestAnimationFrame(monitorVideo);
  };
  if (video) {
    video.addEventListener('loadedmetadata', () => {
      video.currentTime = 0;
      video.play().catch(() => {});
      if (!rafId) monitorVideo();
    });
    video.addEventListener('ended', () => {
      video.style.opacity = '0';
      window.setTimeout(() => {
        video.currentTime = 0;
        video.play().catch(() => {});
      }, 100);
    });
    video.load();
  }

  const parallaxItems = [video, document.querySelector('.stats-panel')].filter(Boolean);
  const handleParallax = () => {
    const y = window.scrollY || 0;
    parallaxItems.forEach((item, idx) => {
      const speed = idx === 0 ? 0.08 : -0.025;
      item.style.transform = `translate3d(0, ${y * speed}px, 0)`;
    });
  };
  if (!window.matchMedia('(prefers-reduced-motion: reduce)').matches) {
    window.addEventListener('scroll', handleParallax, { passive: true });
    handleParallax();
  }

  const form = document.getElementById('contactForm');
  const alertBox = document.getElementById('formAlert');
  const submitBtn = document.getElementById('submitBtn');
  const toastEl = document.getElementById('siteToast');
  const toastBody = document.getElementById('toastBody');
  const showAlert = (type, message) => {
    if (!alertBox) return;
    alertBox.className = `alert alert-${type}`;
    alertBox.textContent = message;
  };
  const showToast = (message) => {
    if (toastBody) toastBody.textContent = message;
    if (toastEl && window.bootstrap) new bootstrap.Toast(toastEl).show();
  };
  form?.addEventListener('submit', async (event) => {
    event.preventDefault();
    showAlert('secondary', 'A enviar o teu pedido...');
    if (submitBtn) {
      submitBtn.disabled = true;
      submitBtn.textContent = 'A enviar...';
    }
    try {
      const response = await fetch('api/contact.php', {
        method: 'POST',
        headers: { 'Accept': 'application/json' },
        body: new FormData(form)
      });
      const data = await response.json().catch(() => ({}));
      if (!response.ok || !data.success) {
        showAlert('warning', data.message || 'Não foi possível enviar. Revê os campos e tenta novamente.');
        return;
      }
      form.reset();
      showAlert('success', data.message || 'Mensagem enviada com sucesso.');
      showToast('Pedido recebido. Obrigado!');
    } catch (error) {
      showAlert('danger', 'Erro de ligação. Tenta novamente dentro de instantes.');
    } finally {
      if (submitBtn) {
        submitBtn.disabled = false;
        submitBtn.textContent = 'Enviar mensagem';
      }
    }
  });


  const cookieBanner = document.getElementById("cookieBanner");
  const cookieAccept = document.getElementById("cookieAccept");
  const cookieDecline = document.getElementById("cookieDecline");
  const cookieChoice = localStorage.getItem("pg-cookie-choice");
  const closeCookieBanner = (choice) => {
    localStorage.setItem("pg-cookie-choice", choice);
    cookieBanner?.classList.remove("is-visible");
  };
  if (cookieBanner && !cookieChoice) {
    window.setTimeout(() => cookieBanner.classList.add("is-visible"), 650);
  }
  cookieAccept?.addEventListener("click", () => closeCookieBanner("accepted"));
  cookieDecline?.addEventListener("click", () => closeCookieBanner("declined"));
})();