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

    // Dark mode toggle (if implemented)
    const darkModeToggle = document.getElementById('darkModeToggle');
    if (darkModeToggle) {
        darkModeToggle.addEventListener('click', () => {
            document.documentElement.classList.toggle('dark');
            localStorage.setItem('darkMode', document.documentElement.classList.contains('dark'));
        });
    }

    // Check for saved dark mode preference
    if (localStorage.getItem('darkMode') === 'true' || 
        (!localStorage.getItem('darkMode') && window.matchMedia('(prefers-color-scheme: dark)').matches)) {
        document.documentElement.classList.add('dark');
    }
});

// Intersection Observer for animations
const observerOptions = {
    threshold: 0.1
};

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

document.querySelectorAll('.fade-in').forEach(el => {
    observer.observe(el);
});