document.addEventListener('DOMContentLoaded', () => {
    // Smooth scrolling for anchor links
    document.querySelectorAll('a[href^="#"]').forEach(anchor => {
        anchor.addEventListener('click', function (e) {
            e.preventDefault();
            const targetId = this.getAttribute('href');
            const targetElement = document.querySelector(targetId);
            
            if (targetElement) {
                const headerOffset = 80;
                const elementPosition = targetElement.getBoundingClientRect().top;
                const offsetPosition = elementPosition + window.pageYOffset - headerOffset;
        
                window.scrollTo({
                    top: offsetPosition,
                    behavior: "smooth"
                });
            }
        });
    });

    // Intersection Observer for scroll animations
    const observerOptions = {
        root: null,
        rootMargin: '0px',
        threshold: 0.1
    };

    const observer = new IntersectionObserver((entries, observer) => {
        entries.forEach(entry => {
            if (entry.isIntersecting) {
                entry.target.classList.add('animate-fade-in-up');
                observer.unobserve(entry.target);
            }
        });
    }, observerOptions);

    // Select elements to animate
    const animatedElements = document.querySelectorAll('section > div');
    animatedElements.forEach(el => {
        el.style.opacity = '0'; // Initially hidden
        observer.observe(el);
    });
});