document.addEventListener('DOMContentLoaded', () => {

    // ── 1. LENIS SMOOTH SCROLL ────────────────────────────────────────
    const lenis = new Lenis({
        duration: 1.2,
        easing: (t) => Math.min(1, 1.001 - Math.pow(2, -10 * t)),
        smooth: true,
        mouseMultiplier: 1,
        smoothTouch: false,
        touchMultiplier: 2,
    });

    function raf(time) {
        lenis.raf(time);
        requestAnimationFrame(raf);
    }
    requestAnimationFrame(raf);

    // ── 2. GSAP PLUGINS ───────────────────────────────────────────────
    gsap.registerPlugin(ScrollTrigger);

    // ── 3. PRELOADER ──────────────────────────────────────────────────
    gsap.set('.hero-title, .hero-subtitle', { opacity: 0 });

    gsap.timeline()
        .to('#loader-text', { y: 0, duration: 1, ease: 'power4.out', delay: 0.2 })
        .to('#loader-text', { y: '-100%', duration: 1, ease: 'power4.in', delay: 0.5 })
        .to('#preloader', { y: '-100%', duration: 1, ease: 'power4.inOut' }, '-=0.5')
        .to('.hero-title', { y: 0, opacity: 1, duration: 1.5, stagger: 0.15, ease: 'power4.out' }, '-=0.4')
        .to('.hero-subtitle', { y: 0, opacity: 1, duration: 1.2, stagger: 0.12, ease: 'power3.out' }, '-=1.2');



    // ── 4. CUSTOM CURSOR ──────────────────────────────────────────────
    if (window.innerWidth >= 768) {
        const cursor = document.getElementById('cursor');
        const cursorDot = document.getElementById('cursor-dot');
        let mouseX = 0, mouseY = 0, cursorX = 0, cursorY = 0;

        document.addEventListener('mousemove', (e) => {
            mouseX = e.clientX;
            mouseY = e.clientY;
            gsap.to(cursorDot, { x: mouseX, y: mouseY, duration: 0 });
        });

        gsap.ticker.add(() => {
            cursorX += (mouseX - cursorX) * 0.2;
            cursorY += (mouseY - cursorY) * 0.2;
            gsap.set(cursor, { x: cursorX, y: cursorY });
        });

        document.querySelectorAll('.hover-target').forEach(target => {
            target.addEventListener('mouseenter', () => {
                gsap.to(cursor, { scale: 2.5, backgroundColor: 'rgba(255,255,255,1)', duration: 0.3 });
                gsap.to(cursorDot, { opacity: 0, duration: 0.3 });
            });
            target.addEventListener('mouseleave', () => {
                gsap.to(cursor, { scale: 1, backgroundColor: 'transparent', duration: 0.3 });
                gsap.to(cursorDot, { opacity: 1, duration: 0.3 });
            });
        });
    }

    // ── 5. SCROLL PROGRESS BAR ────────────────────────────────────────
    const progressBar = document.getElementById('progress-bar');
    lenis.on('scroll', ({ progress }) => {
        if (progressBar) progressBar.style.width = `${progress * 100}%`;
    });

    // ── 6. ACTIVE NAV LINK ────────────────────────────────────────────
    const navLinks = document.querySelectorAll('.nav-link');
    const sections = document.querySelectorAll('section[id]');

    const sectionObserver = new IntersectionObserver((entries) => {
        entries.forEach(entry => {
            if (entry.isIntersecting) {
                const id = entry.target.getAttribute('id');
                navLinks.forEach(link => {
                    link.classList.toggle('active', link.dataset.section === id);
                });
            }
        });
    }, { rootMargin: '-40% 0px -40% 0px', threshold: 0 });

    sections.forEach(s => sectionObserver.observe(s));

    // ── 7. MOBILE MENU ────────────────────────────────────────────────
    const hamburger = document.getElementById('hamburger');
    const mobileOverlay = document.getElementById('mobile-overlay');

    if (hamburger && mobileOverlay) {
        hamburger.addEventListener('click', () => {
            const isOpen = hamburger.classList.contains('open');
            hamburger.classList.toggle('open');
            mobileOverlay.classList.toggle('open');
            isOpen ? lenis.start() : lenis.stop();
        });

        document.querySelectorAll('.mobile-nav-link').forEach(link => {
            link.addEventListener('click', () => {
                hamburger.classList.remove('open');
                mobileOverlay.classList.remove('open');
                lenis.start();
            });
        });
    }

    // ── 8. REVEAL TEXT ANIMATIONS ─────────────────────────────────────
    gsap.utils.toArray('.reveal-text').forEach(el => {
        gsap.from(el, {
            scrollTrigger: { trigger: el, start: 'top 85%' },
            y: 60,
            opacity: 0,
            duration: 1.2,
            ease: 'power3.out',
        });
    });

    // ── 9. CV STAGGERED ANIMATIONS ────────────────────────────────────
    gsap.utils.toArray('.cv-column').forEach(col => {
        const items = col.querySelectorAll('.group');
        if (!items.length) return;
        gsap.from(items, {
            scrollTrigger: { trigger: col, start: 'top 82%' },
            y: 40,
            opacity: 0,
            duration: 0.85,
            stagger: 0.18,
            ease: 'power3.out',
        });
    });

    // ── 10. PARALLAX IMAGES ───────────────────────────────────────────
    gsap.utils.toArray('.parallax-img').forEach(img => {
        gsap.to(img, {
            scrollTrigger: {
                trigger: img.parentElement,
                start: 'top bottom',
                end: 'bottom top',
                scrub: true,
            },
            y: 50,
            ease: 'none',
        });
    });

    // ── 11. DRAGGABLE GALLERY ─────────────────────────────────────────
    const gallery = document.getElementById('gallery');
    if (gallery) {
        let isDown = false, startX, scrollLeft;

        gallery.addEventListener('mousedown', (e) => {
            isDown = true;
            startX = e.pageX - gallery.offsetLeft;
            scrollLeft = gallery.scrollLeft;
        });
        gallery.addEventListener('mouseleave', () => { isDown = false; });
        gallery.addEventListener('mouseup', () => { isDown = false; });
        gallery.addEventListener('mousemove', (e) => {
            if (!isDown) return;
            e.preventDefault();
            gallery.scrollLeft = scrollLeft - (e.pageX - gallery.offsetLeft - startX) * 2;
        });
    }

});