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

// Highlight nav link on scroll
window.addEventListener('scroll', () => {
    const sections = document.querySelectorAll('section');
    const navLinks = document.querySelectorAll('nav ul li a');
    
    let current = '';
    
    sections.forEach(section => {
        const sectionTop = section.offsetTop;
        const sectionHeight = section.clientHeight;
        
        if (scrollY >= (sectionTop - 200)) {
            current = section.getAttribute('id');
        }
    });
    
    navLinks.forEach(link => {
        link.classList.remove('active');
        if (link.getAttribute('href').substring(1) === current) {
            link.classList.add('active');
        }
    });
});