/* TROK Mobilya — frontend interactions (vanilla, no dependencies) */
(function () {
    "use strict";

    /* --- Mobile menu --- */
    var toggle = document.querySelector(".nav-toggle");
    var menu = document.querySelector(".mobile-menu");
    if (toggle && menu) {
        toggle.addEventListener("click", function () {
            var open = menu.classList.toggle("open");
            toggle.classList.toggle("is-open", open);
            toggle.setAttribute("aria-expanded", open ? "true" : "false");
            document.body.style.overflow = open ? "hidden" : "";
        });
        menu.querySelectorAll("a").forEach(function (a) {
            a.addEventListener("click", function () {
                menu.classList.remove("open");
                document.body.style.overflow = "";
            });
        });
    }

    /* --- Scroll reveal --- */
    var reveals = document.querySelectorAll(".reveal");
    if ("IntersectionObserver" in window && reveals.length) {
        var io = new IntersectionObserver(
            function (entries) {
                entries.forEach(function (e) {
                    if (e.isIntersecting) {
                        e.target.classList.add("in");
                        io.unobserve(e.target);
                    }
                });
            },
            { threshold: 0.12, rootMargin: "0px 0px -8% 0px" }
        );
        reveals.forEach(function (el) { io.observe(el); });
    } else {
        reveals.forEach(function (el) { el.classList.add("in"); });
    }

    /* --- Hero slider --- */
    var hero = document.querySelector("[data-slider]");
    if (hero) {
        var slides = hero.querySelectorAll(".hero-slide");
        var dots = hero.querySelectorAll(".hero-dots button");
        var i = 0, timer = null;
        if (slides.length > 1) {
            var go = function (n) {
                slides[i].classList.remove("active");
                if (dots[i]) dots[i].classList.remove("active");
                i = (n + slides.length) % slides.length;
                slides[i].classList.add("active");
                if (dots[i]) dots[i].classList.add("active");
            };
            var start = function () { timer = setInterval(function () { go(i + 1); }, 6000); };
            var reset = function () { clearInterval(timer); start(); };
            dots.forEach(function (d, n) {
                d.addEventListener("click", function () { go(n); reset(); });
            });
            start();
        }
    }

    /* --- Product gallery thumbnails --- */
    var main = document.querySelector("[data-pd-main]");
    if (main) {
        document.querySelectorAll("[data-pd-thumb]").forEach(function (t) {
            t.addEventListener("click", function () {
                main.src = t.getAttribute("data-full") || t.src;
            });
        });
    }
})();