// Intersection Observer for Scroll Animations
const observerOptions = {
    root: null,
    rootMargin: '0px',
    threshold: 0.1
};

const observer = new IntersectionObserver((entries) => {
    entries.forEach(entry => {
        if (entry.isIntersecting) {
            entry.target.classList.add('animate-fade-in-up');
            entry.target.style.opacity = '1';
            
            // Handle counter animation
            if (entry.target.hasAttribute('data-count')) {
                animateCounter(entry.target);
            }
        }
    });
}, observerOptions);

// Observe elements
document.addEventListener('DOMContentLoaded', () => {
    // Observe feature cards
    const featureCards = document.querySelectorAll('.group[data-observe]');
    featureCards.forEach((el, index) => {
        el.style.opacity = '0';
        el.style.animationDelay = `${index * 0.1}s`;
        observer.observe(el);
    });

    // Observe stats
    const stats = document.querySelectorAll('[data-count]');
    stats.forEach(stat => {
        stat.style.opacity = '1';
        observer.observe(stat);
    });

    // Navbar scroll effect
    const nav = document.querySelector('nav');
    let lastScroll = 0;

    window.addEventListener('scroll', () => {
        const currentScroll = window.pageYOffset;
        
        if (currentScroll > 100) {
            nav?.classList.add('bg-slate-950/80', 'backdrop-blur-md', 'border-b', 'border-white/10');
            nav?.classList.remove('bg-transparent');
        } else {
            nav?.classList.remove('bg-slate-950/80', 'backdrop-blur-md', 'border-b', 'border-white/10');
            nav?.classList.add('bg-transparent');
        }

        lastScroll = currentScroll;
    });

    // 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 handling
    const form = document.getElementById('contactForm');
    form?.addEventListener('submit', (e) => {
        e.preventDefault();
        
        // Simulate form submission
        const button = form.querySelector('button[type="submit"]');
        const originalText = button.innerText;
        
        button.innerText = 'Sending...';
        button.disabled = true;
        
        setTimeout(() => {
            button.innerText = 'Message Sent!';
            button.classList.add('bg-green-600');
            
            setTimeout(() => {
                button.innerText = originalText;
                button.classList.remove('bg-green-600');
                button.disabled = false;
                form.reset();
            }, 2000);
        }, 1500);
    });

    // Parallax effect for hero orbs
    document.addEventListener('mousemove', (e) => {
        const orbs = document.querySelectorAll('.animate-float');
        const x = e.clientX / window.innerWidth;
        const y = e.clientY / window.innerHeight;

        orbs.forEach((orb, index) => {
            const speed = (index + 1) * 20;
            const xOffset = (0.5 - x) * speed;
            const yOffset = (0.5 - y) * speed;
            
            orb.style.transform = `translate(${xOffset}px, ${yOffset}px)`;
        });
    });
});

// Counter Animation
function animateCounter(element) {
    const target = parseInt(element.getAttribute('data-count'));
    const duration = 2000;
    const start = 0;
    const increment = target / (duration / 16);
    let current = 0;

    const timer = setInterval(() => {
        current += increment;
        if (current >= target) {
            element.textContent = target + (element.nextElementSibling?.textContent.includes('%') ? '%' : '+');
            clearInterval(timer);
        } else {
            element.textContent = Math.floor(current) + (element.nextElementSibling?.textContent.includes('%') ? '%' : '+');
        }
    }, 16);
}

// Mobile menu toggle
function toggleMobileMenu() {
    const mobileMenu = document.getElementById('mobileMenu');
    const isOpen = !mobileMenu.classList.contains('translate-x-full');
    
    if (isOpen) {
        mobileMenu.classList.add('translate-x-full');
        mobileMenu.classList.remove('translate-x-0');
        document.body.style.overflow = '';
    } else {
        mobileMenu.classList.remove('translate-x-full');
        mobileMenu.classList.add('translate-x-0');
        document.body.style.overflow = 'hidden';
    }
}

// Close mobile menu on resize
window.addEventListener('resize', () => {
    if (window.innerWidth >= 768) {
        const mobileMenu = document.getElementById('mobileMenu');
        mobileMenu?.classList.add('translate-x-full');
        mobileMenu?.classList.remove('translate-x-0');
        document.body.style.overflow = '';
    }
});