document.addEventListener('DOMContentLoaded', function () {
    // Navbar shrink on scroll
    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 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'
            });
        });
    });

    // Contact form validation
    const form = document.querySelector('#contactForm');
    if (form) {
        form.addEventListener('submit', function (e) {
            let isValid = true;
            const name = document.querySelector('#name');
            const email = document.querySelector('#email');
            const message = document.querySelector('#message');

            if (name.value.trim() === '') {
                isValid = false;
                alert('Name is required.');
            }
            if (email.value.trim() === '' || !email.value.includes('@')) {
                isValid = false;
                alert('A valid email is required.');
            }
            if (message.value.trim() === '') {
                isValid = false;
                alert('Message is required.');
            }

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