document.addEventListener('DOMContentLoaded', function () {
    const nav = document.getElementById('mainNav');
    const toggle = document.getElementById('navToggle');
    const navLinks = document.getElementById('navLinks');
    let lastScrollTop = 0;

    // Toggle menu on mobile
    toggle.addEventListener('click', function () {
        nav.classList.toggle('open');
        toggle.classList.toggle('active');
    });

    // Sticky on scroll
    window.addEventListener('scroll', function () {
        const currentScroll = window.pageYOffset || document.documentElement.scrollTop;
        if (currentScroll > 0) {
            nav.classList.add('sticky');
        } else {
            nav.classList.remove('sticky');
        }
        lastScrollTop = currentScroll <= 0 ? 0 : currentScroll;
    });

    // Optionally handle dropdowns on mobile (if desired)
    // For example:
    const submenuParents = document.querySelectorAll('.nav-item.has-submenu');
    submenuParents.forEach(parent => {
        parent.addEventListener('click', (e) => {
            if (window.innerWidth <= 992) {
                e.preventDefault();
                const subMenu = parent.querySelector('.sub-menu');
                if (subMenu) {
                    const isOpen = subMenu.style.display === 'block';
                    // Close all open submenus first (optional)
                    document.querySelectorAll('.sub-menu').forEach(sm => sm.style.display = 'none');
                    subMenu.style.display = isOpen ? 'none' : 'block';
                }
            }
        });
    });
});