// Modern Image Slider with Portrait/Landscape Support

document.addEventListener('DOMContentLoaded', function() {
    // Slider elements
    const slider = document.querySelector('.slider');
    const slides = document.querySelectorAll('.slide');
    const prevBtn = document.querySelector('.prev');
    const nextBtn = document.querySelector('.next');
    const indicatorsContainer = document.querySelector('.slider-indicators');

    // Slider state
    let currentSlide = 0;
    let slideInterval;
    const slideCount = slides.length;

    // Initialize slider
    function initSlider() {
        // Create indicators
        slides.forEach((_, index) => {
            const indicator = document.createElement('div');
            indicator.classList.add('indicator');
            if (index === 0) indicator.classList.add('active');
            indicator.addEventListener('click', () => goToSlide(index));
            indicatorsContainer.appendChild(indicator);
        });

        // Start auto-sliding
        startSlideInterval();

        // Add event listeners
        prevBtn.addEventListener('click', prevSlide);
        nextBtn.addEventListener('click', nextSlide);

        // Handle keyboard navigation
        document.addEventListener('keydown', (e) => {
            if (e.key === 'ArrowLeft') prevSlide();
            if (e.key === 'ArrowRight') nextSlide();
        });

        // Pause on hover
        slider.addEventListener('mouseenter', pauseSlideInterval);
        slider.addEventListener('mouseleave', startSlideInterval);
    }

    // Go to specific slide
    function goToSlide(index) {
        currentSlide = index;
        updateSlider();
    }

    // Previous slide
    function prevSlide() {
        currentSlide = (currentSlide - 1 + slideCount) % slideCount;
        updateSlider();
    }

    // Next slide
    function nextSlide() {
        currentSlide = (currentSlide + 1) % slideCount;
        updateSlider();
    }

    // Update slider display
    function updateSlider() {
        // Update active slide
        slides.forEach((slide, index) => {
            slide.classList.toggle('active', index === currentSlide);
        });

        // Update indicators
        const indicators = document.querySelectorAll('.indicator');
        indicators.forEach((indicator, index) => {
            indicator.classList.toggle('active', index === currentSlide);
        });

        // Reset auto-slide timer
        pauseSlideInterval();
        startSlideInterval();
    }

    // Start auto-sliding
    function startSlideInterval() {
        clearInterval(slideInterval);
        slideInterval = setInterval(nextSlide, 5000);
    }

    // Pause auto-sliding
    function pauseSlideInterval() {
        clearInterval(slideInterval);
    }

    // Handle responsive behavior
    function handleResponsive() {
        const windowWidth = window.innerWidth;

        if (windowWidth < 768) {
            // Mobile view - show slide content below image
            slides.forEach(slide => {
                const img = slide.querySelector('img');
                const content = slide.querySelector('.slide-content');
                
                if (img && content) {
                    img.style.maxHeight = '60vh';
                    content.style.position = 'static';
                    content.style.marginTop = '1rem';
                }
            });
        } else {
            // Desktop view - show content overlay
            slides.forEach(slide => {
                const img = slide.querySelector('img');
                const content = slide.querySelector('.slide-content');
                
                if (img && content) {
                    img.style.maxHeight = '80vh';
                    content.style.position = 'absolute';
                    content.style.marginTop = '0';
                }
            });
        }
    }

    // Initialize on load
    initSlider();
    handleResponsive();

    // Handle window resize
    window.addEventListener('resize', handleResponsive);

    // Contact form submission
    const contactForm = document.getElementById('contactForm');
    if (contactForm) {
        contactForm.addEventListener('submit', function(e) {
            e.preventDefault();
            alert('Thank you for your message! We will get back to you soon.');
            this.reset();
        });
    }

    // Project filtering
    const filterBtns = document.querySelectorAll('.filter-btn');
    const projects = document.querySelectorAll('.project');

    filterBtns.forEach(btn => {
        btn.addEventListener('click', () => {
            filterBtns.forEach(b => b.classList.remove('active'));
            btn.classList.add('active');

            const filter = btn.dataset.filter;
            projects.forEach(project => {
                if (filter === 'all' || project.classList.contains(filter)) {
                    project.style.display = 'block';
                } else {
                    project.style.display = 'none';
                }
            });
        });
    });
});