document.addEventListener('DOMContentLoaded', () => {
    /* ==========================================
       PRELOADER (Correção Blindada)
       ========================================== */
/* Preloader Blindado contra Travamento */
    const preload = document.getElementById('preload');
    if (preload) {
        const hidePreloader = () => {
            preload.classList.add('completed');
            setTimeout(() => {
                preload.style.display = 'none';
            }, 500);
        };

        if (document.readyState === 'complete') {
            hidePreloader();
        } else {
            window.addEventListener('load', hidePreloader);
            // Fallback de segurança absoluto: remove a capa em 1 segundo
            setTimeout(hidePreloader, 1000);
        }
    }
    /* ==========================================
       MENU MOBILE TOGGLE
       ========================================== */
    const mobileToggle = document.getElementById('mobile-toggle');
    const mainNav = document.getElementById('main-nav');
    
    if (mobileToggle && mainNav) {
        mobileToggle.addEventListener('click', () => {
            mainNav.classList.toggle('active');
            mobileToggle.classList.toggle('open');
            
            // Acessibilidade: atualiza o estado do botão
            const isExpanded = mobileToggle.getAttribute('aria-expanded') === 'true';
            mobileToggle.setAttribute('aria-expanded', !isExpanded);
        });
    }

    /* ==========================================
       SUBMENUS MOBILE
       ========================================== */
    const parentMenuItems = document.querySelectorAll('.menu-item-has-children > a');
    parentMenuItems.forEach(item => {
        item.addEventListener('click', (e) => {
            if (window.innerWidth <= 991) {
                e.preventDefault();
                const parent = item.parentElement;
                parent.classList.toggle('open');
            }
        });
    });

    /* ==========================================
       HERO SLIDER (HOME)
       ========================================== */
    const slides = document.querySelectorAll('.hero-slider .slide');
    const prevBtnHome = document.getElementById('prevSlide');
    const nextBtnHome = document.getElementById('nextSlide');
    const dotsContainer = document.getElementById('sliderDots');
    let currentHomeSlide = 0;
    let homeSlideInterval;

    if (slides.length > 0) {
        // Cria os pontos (dots) de navegação dinamicamente
        slides.forEach((_, idx) => {
            const dot = document.createElement('button');
            dot.classList.add('dot');
            dot.setAttribute('aria-label', `Go to slide ${idx + 1}`);
            if (idx === 0) dot.classList.add('active');
            dot.addEventListener('click', () => goToHomeSlide(idx));
            if (dotsContainer) dotsContainer.appendChild(dot);
        });

        const dots = document.querySelectorAll('.slider-dots .dot');

        function goToHomeSlide(n) {
            slides[currentHomeSlide].classList.remove('active');
            if (dots[currentHomeSlide]) dots[currentHomeSlide].classList.remove('active');
            
            currentHomeSlide = (n + slides.length) % slides.length;
            
            slides[currentHomeSlide].classList.add('active');
            if (dots[currentHomeSlide]) dots[currentHomeSlide].classList.add('active');
            
            resetHomeAutoplay();
        }

        function nextHomeSlide() {
            goToHomeSlide(currentHomeSlide + 1);
        }

        function prevHomeSlide() {
            goToHomeSlide(currentHomeSlide - 1);
        }

        if (nextBtnHome) nextBtnHome.addEventListener('click', nextHomeSlide);
        if (prevBtnHome) prevBtnHome.addEventListener('click', prevHomeSlide);

        function startHomeAutoplay() {
            homeSlideInterval = setInterval(nextHomeSlide, 5000);
        }

        function resetHomeAutoplay() {
            clearInterval(homeSlideInterval);
            startHomeAutoplay();
        }

        startHomeAutoplay();
        
        // Pausa o autoplay quando o usuário passa o mouse sobre o slider
        const heroSlider = document.querySelector('.hero-slider');
        if (heroSlider) {
            heroSlider.addEventListener('mouseenter', () => clearInterval(homeSlideInterval));
            heroSlider.addEventListener('mouseleave', startHomeAutoplay);
        }
    }

    /* ==========================================
       GALERIA DE SERVIÇOS (Se existir na página)
       ========================================== */
    const galleryTrack = document.getElementById('galleryTrack');
    const thumbs = document.querySelectorAll('.service-gallery-thumbs img');
    const prevBtnGallery = document.getElementById('galleryPrev');
    const nextBtnGallery = document.getElementById('galleryNext');

    if (galleryTrack && thumbs.length > 0) {
        let currentGalleryIndex = 0;
        
        function updateGallery(index) {
            currentGalleryIndex = (index + thumbs.length) % thumbs.length;
            galleryTrack.style.transform = `translateX(-${currentGalleryIndex * 100}%)`;
            thumbs.forEach((thumb, idx) => {
                thumb.classList.toggle('active', idx === currentGalleryIndex);
            });
        }

        if (nextBtnGallery) {
            nextBtnGallery.addEventListener('click', () => updateGallery(currentGalleryIndex + 1));
        }
        if (prevBtnGallery) {
            prevBtnGallery.addEventListener('click', () => updateGallery(currentGalleryIndex - 1));
        }
        thumbs.forEach((thumb, idx) => {
            thumb.addEventListener('click', () => updateGallery(idx));
        });
    }

    /* ==========================================
       FORMULÁRIO DE CONTATO COM REDIRECIONAMENTO
       ========================================== */
    const contactForm = document.getElementById('contact-form');
    const responseContainer = document.getElementById('contact-content');

    if (contactForm && responseContainer) {
        contactForm.addEventListener('submit', (e) => {
            e.preventDefault();
            const formData = new FormData(contactForm);
            responseContainer.innerHTML = '<div class="thanks loading">Sending message...</div>';
            
            fetch(contactForm.getAttribute('action'), {
                method: 'POST',
                body: formData
            })
            .then(response => response.text())
            .then(data => {
                if (data.trim() === 'REDIRECT:thankyou.html') {
                    window.location.href = 'thankyou.html';
                } else {
                    responseContainer.innerHTML = data;
                }
            })
            .catch(() => {
                responseContainer.innerHTML = '<div class="thanks failure">An error occurred while sending your message. Please try again.</div>';
            });
        });
    }
});