// ===== Initialize Lucide Icons =====
lucide.createIcons();

// ===== Initialize AOS =====
AOS.init({
    duration: 800,
    easing: 'ease-out-cubic',
    once: true,
    offset: 50,
});

// ===== Mobile Menu Toggle =====
const mobileMenuBtn = document.getElementById('mobile-menu-btn');
const mobileMenu = document.getElementById('mobile-menu');

mobileMenuBtn.addEventListener('click', () => {
    mobileMenu.classList.toggle('hidden');
    const icon = mobileMenuBtn.querySelector('[data-lucide]');
    if (mobileMenu.classList.contains('hidden')) {
        icon.setAttribute('data-lucide', 'menu');
    } else {
        icon.setAttribute('data-lucide', 'x');
    }
    lucide.createIcons();
});

// Close mobile menu on link click
mobileMenu.querySelectorAll('a').forEach(link => {
    link.addEventListener('click', () => {
        mobileMenu.classList.add('hidden');
        mobileMenuBtn.querySelector('[data-lucide]').setAttribute('data-lucide', 'menu');
        lucide.createIcons();
    });
});

// ===== Navbar Scroll Effect =====
const navbar = document.getElementById('navbar');
let lastScroll = 0;

window.addEventListener('scroll', () => {
    const currentScroll = window.pageYOffset;
    
    if (currentScroll > 50) {
        navbar.classList.add('shadow-2xl', 'shadow-black/50');
    } else {
        navbar.classList.remove('shadow-2xl', 'shadow-black/50');
    }
    
    lastScroll = currentScroll;
});

// ===== Active Nav Link on Scroll =====
const sections = document.querySelectorAll('section[id]');
const navLinks = document.querySelectorAll('.nav-link');

window.addEventListener('scroll', () => {
    let current = '';
    sections.forEach(section => {
        const sectionTop = section.offsetTop - 150;
        const sectionHeight = section.clientHeight;
        if (window.pageYOffset >= sectionTop && window.pageYOffset < sectionTop + sectionHeight) {
            current = section.getAttribute('id');
        }
    });

    navLinks.forEach(link => {
        link.classList.remove('active');
        if (link.getAttribute('href') === '#' + current) {
            link.classList.add('active');
        }
    });
});

// ===== Back to Top Button =====
const backToTopBtn = document.getElementById('back-to-top');

window.addEventListener('scroll', () => {
    if (window.pageYOffset > 500) {
        backToTopBtn.classList.remove('opacity-0', 'invisible');
        backToTopBtn.classList.add('opacity-100', 'visible');
    } else {
        backToTopBtn.classList.add('opacity-0', 'invisible');
        backToTopBtn.classList.remove('opacity-100', 'visible');
    }
});

backToTopBtn.addEventListener('click', () => {
    window.scrollTo({ top: 0, behavior: 'smooth' });
});

// ===== Counter Animation =====
const counters = document.querySelectorAll('[data-counter]');
const speed = 200;

const formatNumber = (num) => {
    return num.toLocaleString('fa-IR');
};

const animateCounter = (counter) => {
    const target = parseInt(counter.getAttribute('data-counter'));
    const suffix = counter.getAttribute('data-suffix') || '';
    let current = 0;
    const increment = target / speed;
    const step = () => {
        current += increment;
        if (current < target) {
            counter.textContent = formatNumber(Math.floor(current)) + suffix;
            requestAnimationFrame(step);
        } else {
            counter.textContent = formatNumber(target) + suffix;
        }
    };
    step();
};

// Observer for counters
const counterObserver = new IntersectionObserver((entries) => {
    entries.forEach(entry => {
        if (entry.isIntersecting) {
            animateCounter(entry.target);
            counterObserver.unobserve(entry.target);
        }
    });
}, { threshold: 0.5 });

counters.forEach(counter => {
    counterObserver.observe(counter);
});

// ===== API Tab Switching =====
const apiTabs = document.querySelectorAll('.api-tab');
const apiCodes = document.querySelectorAll('.api-code');

apiTabs.forEach(tab => {
    tab.addEventListener('click', () => {
        const targetTab = tab.getAttribute('data-tab');
        
        // Update tab buttons
        apiTabs.forEach(t => {
            t.classList.remove('active', 'bg-brand-500', 'text-white');
            t.classList.add('bg-white/5', 'text-gray-400');
        });
        tab.classList.add('active', 'bg-brand-500', 'text-white');
        tab.classList.remove('bg-white/5', 'text-gray-400');
        
        // Update code display
        apiCodes.forEach(code => {
            if (code.getAttribute('data-code') === targetTab) {
                code.classList.remove('hidden');
            } else {
                code.classList.add('hidden');
            }
        });
    });
});

// ===== Copy Code Button =====
const copyBtn = document.getElementById('copy-btn');

copyBtn.addEventListener('click', () => {
    const activeCode = document.querySelector('.api-code:not(.hidden)');
    if (activeCode) {
        const textToCopy = activeCode.textContent;
        navigator.clipboard.writeText(textToCopy).then(() => {
            const icon = copyBtn.querySelector('[data-lucide]');
            const originalText = copyBtn.textContent;
            copyBtn.innerHTML = '<i data-lucide="check" class="w-4 h-4"></i> کپی شد!';
            lucide.createIcons();
            
            setTimeout(() => {
                copyBtn.innerHTML = '<i data-lucide="copy" class="w-4 h-4"></i> کپی';
                lucide.createIcons();
            }, 2000);
        });
    }
});

// ===== Contact Form Submission =====
const contactForm = document.getElementById('contact-form');

contactForm.addEventListener('submit', (e) => {
    e.preventDefault();
    
    const btn = contactForm.querySelector('button[type="submit"]');
    const originalContent = btn.innerHTML;
    
    btn.innerHTML = '<i data-lucide="loader-2" class="w-5 h-5 animate-spin"></i> در حال отправка...';
    btn.disabled = true;
    lucide.createIcons();
    
    setTimeout(() => {
        btn.innerHTML = '<i data-lucide="check-circle" class="w-5 h-5"></i> پیام ارسال شد!';
        btn.classList.add('bg-green-500');
        lucide.createIcons();
        
        setTimeout(() => {
            btn.innerHTML = originalContent;
            btn.classList.remove('bg-green-500');
            btn.disabled = false;
            contactForm.reset();
            lucide.createIcons();
        }, 2500);
    }, 1500);
});

// ===== Smooth Scroll for Anchor Links =====
document.querySelectorAll('a[href^="#"]').forEach(anchor => {
    anchor.addEventListener('click', function(e) {
        const targetId = this.getAttribute('href');
        if (targetId === '#') return;
        
        const targetElement = document.querySelector(targetId);
        if (targetElement) {
            e.preventDefault();
            const offset = 80;
            const targetPosition = targetElement.offsetTop - offset;
            window.scrollTo({
                top: targetPosition,
                behavior: 'smooth'
            });
        }
    });
});

// ===== Re-initialize icons after dynamic content =====
setTimeout(() => {
    lucide.createIcons();
}, 100);