// Theme switcher functionality
document.addEventListener('DOMContentLoaded', function() {
    // Check for saved theme preference or use system preference
    const prefersDark = window.matchMedia('(prefers-color-scheme: dark)').matches;
    const savedTheme = localStorage.getItem('theme');
    
    if (savedTheme === 'dark' || (!savedTheme && prefersDark)) {
        document.documentElement.classList.add('dark');
    }
    
    // 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',
                    block: 'start'
                });
            }
        });
    });
});

// Function to toggle dark mode
function toggleDarkMode() {
    const html = document.documentElement;
    html.classList.toggle('dark');
    
    // Save preference to localStorage
    const isDark = html.classList.contains('dark');
    localStorage.setItem('theme', isDark ? 'dark' : 'light');
}