// Initialize Feather icons
document.addEventListener('DOMContentLoaded', function() {
    feather.replace();
    
    // Add animation to elements when they come into view
    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');
                observer.unobserve(entry.target);
            }
        });
    }, observerOptions);
    
    // Observe feature cards
    document.querySelectorAll('.feature-card').forEach(card => {
        card.classList.add('opacity-0', 'translate-y-4');
        observer.observe(card);
    });
    
    // Smooth scrolling for anchor links
    document.querySelectorAll('a[href^="#"]').forEach(anchor => {
        anchor.addEventListener('click', function(e) {
            e.preventDefault();
            const target = document.querySelector(this.getAttribute('href'));
            if (target) {
                target.scrollIntoView({
                    behavior: 'smooth',
                    block: 'start'
                });
            }
        });
    });
});

// Theme toggle functionality
function toggleTheme() {
    const html = document.documentElement;
    const currentTheme = html.classList.contains('dark') ? 'dark' : 'light';
    
    if (currentTheme === 'light') {
        html.classList.add('dark');
        localStorage.setItem('theme', 'dark');
    } else {
        html.classList.remove('dark');
        localStorage.setItem('theme', 'light');
    }
}

// Set initial theme based on system preference or saved preference
document.addEventListener('DOMContentLoaded', () => {
    const savedTheme = localStorage.getItem('theme');
    const systemPrefersDark = window.matchMedia('(prefers-color-scheme: dark)').matches;
    
    if (savedTheme === 'dark' || (!savedTheme && systemPrefersDark)) {
        document.documentElement.classList.add('dark');
    }
});