document.addEventListener('DOMContentLoaded', function () {
    // Sticky header
    const navbar = document.querySelector('.navbar');
    if (navbar) {
        window.addEventListener('scroll', () => {
            if (window.scrollY > 50) {
                navbar.classList.add('navbar-sticky');
            } else {
                navbar.classList.remove('navbar-sticky');
            }
        });
    }

    // Smooth scrolling for anchor links
    document.querySelectorAll('a[href^="#"]').forEach(anchor => {
        anchor.addEventListener('click', function (e) {
            e.preventDefault();
            document.querySelector(this.getAttribute('href')).scrollIntoView({
                behavior: 'smooth'
            });
        });
    });

    // Contact form validation
    const contactForm = document.getElementById('contactForm');
    if (contactForm) {
        contactForm.addEventListener('submit', function(e) {
            if (!this.checkValidity()) {
                e.preventDefault();
                e.stopPropagation();
            }
            this.classList.add('was-validated');
        }, false);
    }
});