// Mobile Navigation Toggle
const hamburger = document.querySelector('.hamburger');
const navMenu = document.querySelector('.nav-menu');

hamburger.addEventListener('click', () => {
    hamburger.classList.toggle('active');
    navMenu.classList.toggle('active');
});

// Close mobile menu when clicking on a link
document.querySelectorAll('.nav-link').forEach(link => {
    link.addEventListener('click', () => {
        hamburger.classList.remove('active');
        navMenu.classList.remove('active');
    });
});

// Smooth scrolling for navigation 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'
            });
        }
    });
});

// Active navigation link on scroll
window.addEventListener('scroll', () => {
    let current = '';
    const sections = document.querySelectorAll('section');
    
    sections.forEach(section => {
        const sectionTop = section.offsetTop;
        const sectionHeight = section.clientHeight;
        if (scrollY >= (sectionTop - 200)) {
            current = section.getAttribute('id');
        }
    });

    document.querySelectorAll('.nav-link').forEach(link => {
        link.classList.remove('active');
        if (link.getAttribute('href').slice(1) === current) {
            link.classList.add('active');
        }
    });
});

// Header background on scroll
window.addEventListener('scroll', () => {
    const navbar = document.querySelector('.navbar');
    if (window.scrollY > 50) {
        navbar.style.background = 'rgba(255, 255, 255, 0.95)';
        navbar.style.backdropFilter = 'blur(10px)';
    } else {
        navbar.style.background = 'white';
        navbar.style.backdropFilter = 'none';
    }
});

// Form submission handling
const contactForm = document.querySelector('.contact-form form');
if (contactForm) {
    contactForm.addEventListener('submit', function(e) {
        e.preventDefault();
        
        // Get form data
        const formData = new FormData(this);
        const name = this.querySelector('input[type="text"]').value;
        const email = this.querySelector('input[type="email"]').value;
        const phone = this.querySelector('input[type="tel"]').value;
        const service = this.querySelector('select').value;
        const message = this.querySelector('textarea').value;
        
        // Simple validation
        if (!name || !email || !message) {
            showNotification('Por favor, completa todos los campos obligatorios.', 'error');
            return;
        }
        
        // Email validation
        const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
        if (!emailRegex.test(email)) {
            showNotification('Por favor, introduce un email válido.', 'error');
            return;
        }
        
        // Simulate form submission (replace with actual endpoint)
        showNotification('¡Mensaje enviado con éxito! Nos pondremos en contacto contigo pronto.', 'success');
        this.reset();
    });
}

// Newsletter form handling
const newsletterForm = document.querySelector('.newsletter-form');
if (newsletterForm) {
    newsletterForm.addEventListener('submit', function(e) {
        e.preventDefault();
        const email = this.querySelector('input[type="email"]').value;
        
        if (!email) {
            showNotification('Por favor, introduce tu email.', 'error');
            return;
        }
        
        const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
        if (!emailRegex.test(email)) {
            showNotification('Por favor, introduce un email válido.', 'error');
            return;
        }
        
        // Simulate newsletter subscription
        showNotification('¡Gracias por suscribirte a nuestro newsletter!', 'success');
        this.reset();
    });
}

// Notification system
function showNotification(message, type = 'info') {
    // Remove existing notifications
    const existingNotification = document.querySelector('.notification');
    if (existingNotification) {
        existingNotification.remove();
    }
    
    // Create notification element
    const notification = document.createElement('div');
    notification.className = `notification notification-${type}`;
    notification.textContent = message;
    
    // Add styles
    notification.style.cssText = `
        position: fixed;
        top: 20px;
        right: 20px;
        padding: 15px 20px;
        border-radius: 8px;
        color: white;
        font-weight: 500;
        z-index: 10000;
        transform: translateX(100%);
        transition: transform 0.3s ease;
        max-width: 300px;
    `;
    
    // Set background color based on type
    switch(type) {
        case 'success':
            notification.style.background = '#10b981';
            break;
        case 'error':
            notification.style.background = '#ef4444';
            break;
        default:
            notification.style.background = '#3b82f6';
    }
    
    // Add to page
    document.body.appendChild(notification);
    
    // Animate in
    setTimeout(() => {
        notification.style.transform = 'translateX(0)';
    }, 100);
    
    // Remove after 5 seconds
    setTimeout(() => {
        notification.style.transform = 'translateX(100%)';
        setTimeout(() => {
            notification.remove();
        }, 300);
    }, 5000);
}

// Intersection Observer for animations
const observerOptions = {
    threshold: 0.1,
    rootMargin: '0px 0px -50px 0px'
};

const observer = new IntersectionObserver((entries) => {
    entries.forEach(entry => {
        if (entry.isIntersecting) {
            entry.target.style.opacity = '1';
            entry.target.style.transform = 'translateY(0)';
        }
    });
}, observerOptions);

// Observe elements for animation
document.addEventListener('DOMContentLoaded', () => {
    const animatedElements = document.querySelectorAll('.service-card, .project-card, .testimonial-card');
    
    animatedElements.forEach(el => {
        el.style.opacity = '0';
        el.style.transform = 'translateY(30px)';
        el.style.transition = 'opacity 0.6s ease, transform 0.6s ease';
        observer.observe(el);
    });
});

// Lazy loading for images
const imageObserver = new IntersectionObserver((entries) => {
    entries.forEach(entry => {
        if (entry.isIntersecting) {
            const img = entry.target;
            img.style.opacity = '0';
            img.style.transition = 'opacity 0.5s ease';
            
            img.onload = () => {
                img.style.opacity = '1';
            };
            
            // Force load if not already loaded
            if (img.complete) {
                img.style.opacity = '1';
            }
            
            imageObserver.unobserve(img);
        }
    });
});

// Observe all images
document.addEventListener('DOMContentLoaded', () => {
    const images = document.querySelectorAll('img');
    images.forEach(img => imageObserver.observe(img));
});

// Parallax effect for hero section
window.addEventListener('scroll', () => {
    const scrolled = window.pageYOffset;
    const hero = document.querySelector('.hero');
    if (hero) {
        hero.style.transform = `translateY(${scrolled * 0.5}px)`;
    }
});

// Add loading animation
window.addEventListener('load', () => {
    document.body.style.opacity = '0';
    document.body.style.transition = 'opacity 0.5s ease';
    
    setTimeout(() => {
        document.body.style.opacity = '1';
    }, 100);
});

// Counter animation for statistics
function animateCounter(element, target, duration = 2000) {
    let start = 0;
    const increment = target / (duration / 16);
    
    const timer = setInterval(() => {
        start += increment;
        if (start >= target) {
            element.textContent = target;
            clearInterval(timer);
        } else {
            element.textContent = Math.floor(start);
        }
    }, 16);
}

// Initialize counters when in viewport
const counterObserver = new IntersectionObserver((entries) => {
    entries.forEach(entry => {
        if (entry.isIntersecting && !entry.target.classList.contains('counted')) {
            const target = parseInt(entry.target.textContent);
            entry.target.classList.add('counted');
            animateCounter(entry.target, target);
        }
    });
}, { threshold: 0.5 });

// Add hover effects to cards
document.addEventListener('DOMContentLoaded', () => {
    const cards = document.querySelectorAll('.service-card, .project-card, .testimonial-card');
    
    cards.forEach(card => {
        card.addEventListener('mouseenter', function() {
            this.style.transform = 'translateY(-10px) scale(1.02)';
        });
        
        card.addEventListener('mouseleave', function() {
            this.style.transform = 'translateY(0) scale(1)';
        });
    });
});

// Add active class to current navigation item
document.addEventListener('DOMContentLoaded', () => {
    const currentPath = window.location.hash || '#inicio';
    const activeLink = document.querySelector(`.nav-link[href="${currentPath}"]`);
    if (activeLink) {
        activeLink.classList.add('active');
    }
});