document.addEventListener('DOMContentLoaded', function() {
    // Color scheme toggle functionality
    const colorSchemeToggle = document.getElementById('color-scheme-toggle');
    if (colorSchemeToggle) {
        colorSchemeToggle.addEventListener('click', function() {
            document.documentElement.classList.toggle('dark');
            localStorage.setItem('colorScheme', document.documentElement.classList.contains('dark') ? 'dark' : 'light');
        });
    }

    // Initialize color scheme from localStorage
    if (localStorage.getItem('colorScheme') === 'dark') {
        document.documentElement.classList.add('dark');
    }

    // 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'
            });
        });
    });

    // Animate elements when they come into view
    const observer = new IntersectionObserver((entries) => {
        entries.forEach(entry => {
            if (entry.isIntersecting) {
                entry.target.classList.add('animate-fadeIn');
            }
        });
    }, { threshold: 0.1 });

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