// Intersection Observer for scroll animations
document.addEventListener('DOMContentLoaded', function() {
    // Initialize feather icons
    feather.replace();

    const observerOptions = {
        threshold: 0.1
    };

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

    // Observe all sections
    document.querySelectorAll('section').forEach(section => {
        observer.observe(section);
    });

    // 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'
                });
            }
        });
    });

    // Mobile menu toggle
    const mobileMenuBtn = document.querySelector('.mobile-menu-btn');
    const navLinks = document.querySelector('.nav-links');
    
    if (mobileMenuBtn && navLinks) {
        mobileMenuBtn.addEventListener('click', () => {
            navLinks.classList.toggle('active');
        });
    }

    // Form submission handling
    const contactForm = document.querySelector('form');
    if (contactForm) {
        contactForm.addEventListener('submit', function(e) {
            e.preventDefault();
            
            // Show success message
            const submitBtn = this.querySelector('button[type="submit"]');
            submitBtn.textContent = 'Message Sent!';
            submitBtn.classList.remove('bg-primary');
            submitBtn.classList.add('bg-green-500');
            
            setTimeout(() => {
                submitBtn.textContent = 'Send Message';
                submitBtn.classList.remove('bg-green-500');
                submitBtn.classList.add('bg-primary');
                this.reset();
            }, 3000);
        });
    }
});