document.addEventListener('DOMContentLoaded', function() {
    const contactForm = document.getElementById('contactForm');
    if (contactForm) {
        contactForm.addEventListener('submit', function(e) {
            const name = document.getElementById('name').value.trim();
            const email = document.getElementById('email').value.trim();
            const message = document.getElementById('message').value.trim();
            const emailPattern = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;

            if (name === '' || email === '' || message === '') {
                e.preventDefault();
                alert('Please fill out all fields.');
                return;
            }

            if (!emailPattern.test(email)) {
                e.preventDefault();
                alert('Please enter a valid email address.');
                return;
            }
        });
    }
});