// Minimal JavaScript for functionality
document.addEventListener('DOMContentLoaded', function() {
    // Mobile navigation toggle
    const navToggle = document.querySelector('.nav-toggle');
    const navMenu = document.querySelector('.nav-menu');
    
    if (navToggle && navMenu) {
        navToggle.addEventListener('click', function() {
            navMenu.classList.toggle('active');
            
            // Animate hamburger menu
            const spans = navToggle.querySelectorAll('span');
            spans.forEach((span, index) => {
                if (navMenu.classList.contains('active')) {
                    if (index === 0) span.style.transform = 'rotate(45deg) translate(5px, 5px)';
                    if (index === 1) span.style.opacity = '0';
                    if (index === 2) span.style.transform = 'rotate(-45deg) translate(7px, -6px)';
                } else {
                    span.style.transform = '';
                    span.style.opacity = '';
                }
            });
        });
    }
    
    // Smooth scrolling for anchor links
    const links = document.querySelectorAll('a[href^="#"]');
    links.forEach(link => {
        link.addEventListener('click', function(e) {
            e.preventDefault();
            const target = document.querySelector(this.getAttribute('href'));
            if (target) {
                target.scrollIntoView({
                    behavior: 'smooth',
                    block: 'start'
                });
            }
        });
    });
    
    // Add scroll effect to header
    let lastScroll = 0;
    const header = document.querySelector('.header');
    
    window.addEventListener('scroll', function() {
        const currentScroll = window.pageYOffset;
        
        if (header) {
            if (currentScroll > 100) {
                header.style.backgroundColor = 'rgba(0, 0, 0, 0.95)';
            } else {
                header.style.backgroundColor = 'rgba(0, 0, 0, 0.9)';
            }
        }
        
        lastScroll = currentScroll;
    });
});

// Security: No external dependencies, no eval(), no inline scripts