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

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

// Animation on scroll
const observerOptions = {
    root: null,
    rootMargin: '0px',
    threshold: 0.1
};

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

document.querySelectorAll('.animate-on-scroll').forEach(el => {
    observer.observe(el);
});

// Add animation classes to CSS
const style = document.createElement('style');
style.innerHTML = `
    @keyframes fade-in-up {
        from {
            opacity: 0;
            transform: translateY(20px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
    
    .animate-fade-in-up {
        animation: fade-in-up 0.6s ease-out forwards;
    }
`;
document.head.appendChild(style);