// Initialize animations on scroll
const observerOptions = {
    threshold: 0.1,
    rootMargin: '0px 0px -50px 0px'
};

const observer = new IntersectionObserver(function(entries) {
    entries.forEach(entry => {
        if (entry.isIntersecting) {
            entry.target.classList.add('fade-in');
        }
    });
}, observerOptions);

// Observe all sections
document.addEventListener('DOMContentLoaded', function() {
    const sections = document.querySelectorAll('section');
    sections.forEach(section => {
        observer.observe(section);
    });

    // Mobile menu toggle
    const mobileMenuButton = document.getElementById('mobile-menu-button');
    const mobileMenu = document.getElementById('mobile-menu');
    
    if (mobileMenuButton && mobileMenu) {
        mobileMenuButton.addEventListener('click', function() {
            mobileMenu.classList.toggle('hidden');
        });
    }

    // Smooth scroll 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'
                });
            }
        });
    });

    // Form validation
    const forms = document.querySelectorAll('form');
    forms.forEach(form => {
        form.addEventListener('submit', function(e) {
            e.preventDefault();
            // Add your form validation logic here
            console.log('Form submitted');
        });
    });
});

// Counter animation for numbers
function animateCounter(element, target, duration = 2000) {
    let start = 0;
    const increment = target / (duration / 16);
    
    function updateCounter() {
        start += increment;
        if (start < target) {
            element.textContent = Math.floor(start);
            requestAnimationFrame(updateCounter);
        } else {
            element.textContent = target;
        }
    }
    
    updateCounter();
}

// Lazy loading images
const imageObserver = new IntersectionObserver((entries, observer) => {
    entries.forEach(entry => {
        if (entry.isIntersecting) {
            const img = entry.target;
            img.src = img.dataset.src;
            img.classList.remove('lazy');
            imageObserver.unobserve(img);
        }
    });
});

document.addEventListener('DOMContentLoaded', () => {
    const lazyImages = document.querySelectorAll('img.lazy');
    lazyImages.forEach(img => imageObserver.observe(img));
});