/* ============================================================
   MANDIDEEP STEEL INDUSTRIES — GLOBAL SCRIPT
   Handles: sticky nav state, mobile menu, reveal animations,
   footer year, active link, marquee duplication.
   ============================================================ */
(function () {
  'use strict';

  // ---------- Sticky nav (transparent -> solid on scroll) ----------
  const nav = document.getElementById('siteNav');
  const setNavState = () => {
    if (!nav) return;
    if (window.scrollY > 30) nav.classList.add('scrolled');
    else nav.classList.remove('scrolled');
  };
  setNavState();
  window.addEventListener('scroll', setNavState, { passive: true });

  // ---------- Mobile menu toggle ----------
  const toggle = document.getElementById('navToggle');
  const menu = document.getElementById('mobileMenu');
  if (toggle && menu) {
    toggle.addEventListener('click', () => {
      toggle.classList.toggle('open');
      menu.classList.toggle('open');
    });
    // Close menu when a link inside is clicked
    menu.querySelectorAll('a').forEach(a => {
      a.addEventListener('click', () => {
        toggle.classList.remove('open');
        menu.classList.remove('open');
      });
    });
  }

  // ---------- Active nav link based on current page ----------
  const path = window.location.pathname.replace(/\/$/, '');
  document.querySelectorAll('.nav-links .nav-btn').forEach(link => {
    const href = link.getAttribute('href');
    if (!href) return;
    if ((path === '' && href.endsWith('index.html')) || path.endsWith(href)) {
      link.classList.add('active');
    } else if (link.classList.contains('active') && !path.endsWith(href) && !(path === '' && href.endsWith('index.html'))) {
      link.classList.remove('active');
    }
  });

  // ---------- Reveal on scroll ----------
  const revealEls = document.querySelectorAll('.reveal');
  if ('IntersectionObserver' in window) {
    const io = new IntersectionObserver((entries) => {
      entries.forEach(e => {
        if (e.isIntersecting) {
          e.target.classList.add('in');
          io.unobserve(e.target);
        }
      });
    }, { threshold: 0.12 });
    revealEls.forEach(el => io.observe(el));
  } else {
    revealEls.forEach(el => el.classList.add('in'));
  }

  // ---------- Footer year ----------
  const y = document.getElementById('year');
  if (y) y.textContent = new Date().getFullYear();

  // ---------- Marquee: duplicate track children for seamless loop ----------
  window.addEventListener("load", () => {

document.querySelectorAll(".marquee-track").forEach(track=>{

if(track.dataset.cloned==="1") return;

track.innerHTML += track.innerHTML;

track.dataset.cloned="1";

});

});

})();