// Initialize app
document.addEventListener('DOMContentLoaded', () => {
    // Check for saved theme preference
    const savedTheme = localStorage.getItem('theme');
    if (savedTheme) {
        document.documentElement.classList.add(savedTheme);
    } else if (window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches) {
        document.documentElement.classList.add('dark');
    }
    
    // Smooth transitions
    setTimeout(() => {
        document.body.classList.remove('opacity-0');
    }, 100);
});

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