// Theme toggle functionality
document.addEventListener('DOMContentLoaded', () => {
    // Check for saved theme preference or use dark as default
    if (localStorage.getItem('theme') === 'light' || (!localStorage.getItem('theme') && window.matchMedia('(prefers-color-scheme: light)').matches)) {
        document.documentElement.classList.remove('dark');
    } else {
        document.documentElement.classList.add('dark');
    }
    
    // Animation triggers
    const animateOnScroll = () => {
        const elements = document.querySelectorAll('.fade-in');
        elements.forEach(el => {
            const elementPosition = el.getBoundingClientRect().top;
            const screenPosition = window.innerHeight / 1.2;
            
            if (elementPosition < screenPosition) {
                el.style.opacity = '1';
                el.style.transform = 'translateY(0)';
            }
        });
    };
    
    window.addEventListener('scroll', animateOnScroll);
    animateOnScroll(); // Run once on load
});

// Utility function for smooth scrolling
function smoothScrollTo(target) {
    document.querySelector(target).scrollIntoView({
        behavior: 'smooth'
    });
}