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

    // Navbar scroll effect
    const navbar = document.querySelector('.navbar');
    window.addEventListener('scroll', () => {
        if (window.scrollY > 50) {
            navbar.classList.add('navbar-scrolled');
        } else {
            navbar.classList.remove('navbar-scrolled');
        }
    });

    // Contact form validation
    const form = document.querySelector('#contactForm');
    const form = document.querySelector('#contactForm');
    if (form) {
        form.addEventListener('submit', function(event) {
            let isValid = true;
            // Clear previous errors
            document.querySelectorAll('.invalid-feedback').forEach(el => el.style.display = 'none');
            document.querySelectorAll('.form-control').forEach(el => el.classList.remove('is-invalid'));

            // Name validation
            const name = document.querySelector('#name');
            if (name.value.trim() === '') {
                isValid = false;
                name.classList.add('is-invalid');
                document.querySelector('#nameError').style.display = 'block';
            }

            // Email validation
            const email = document.querySelector('#email');
            const emailPattern = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
            if (!emailPattern.test(email.value)) {
                isValid = false;
                email.classList.add('is-invalid');
                document.querySelector('#emailError').style.display = 'block';
            }

            // Message validation
            const message = document.querySelector('#message');
            if (message.value.trim() === '') {
                isValid = false;
                message.classList.add('is-invalid');
                document.querySelector('#messageError').style.display = 'block';
            }

            if (!isValid) {
                event.preventDefault();
            }
        });
    }
});