script.js

// ===== MOBILE NAVIGATION =====
const navToggle = document.getElementById('navToggle');
const navMenu = document.getElementById('navMenu');
const navLinks = document.querySelectorAll('.nav-link');

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

// Close mobile menu when clicking on a link & smooth scroll
navLinks.forEach(link => {
    link.addEventListener('click', (e) => {
        e.preventDefault();

        // Close menu
        navToggle.classList.remove('active');
        navMenu.classList.remove('active');

        // Smooth scroll
        const targetId = link.getAttribute('href');
        const targetSection = document.querySelector(targetId);

        if (targetSection) {
            const offsetTop = targetSection.offsetTop - 70;
            window.scrollTo({
                top: offsetTop,
                behavior: 'smooth'
            });
        }
    });
});

// ===== NAVBAR STYLING ON SCROLL =====
const navbar = document.querySelector('.navbar');

window.addEventListener('scroll', () => {
    if (window.scrollY > 50) {
        navbar.style.background = 'rgba(15, 23, 42, 0.98)';
        navbar.style.boxShadow = '0 4px 20px rgba(0, 0, 0, 0.3)';
    } else {
        navbar.style.background = 'rgba(15, 23, 42, 0.95)';
        navbar.style.boxShadow = 'none';
    }

    // Active navigation link on scroll
    let current = '';
    const sections = document.querySelectorAll('section');
    sections.forEach(section => {
        const sectionTop = section.offsetTop;
        const sectionHeight = section.clientHeight;
        if (window.pageYOffset >= sectionTop - 100) {
            current = section.getAttribute('id');
        }
    });

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

// ===== 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);

document.querySelectorAll('.project-card, .skill-category, .about-text').forEach(el => {
    el.style.opacity = '0';
    el.style.transform = 'translateY(30px)';
    el.style.transition = 'opacity 0.6s ease-out, transform 0.6s ease-out';
    observer.observe(el);
});

// ===== HERO PARALLAX EFFECT =====
const heroContent = document.querySelector('.hero-content');
window.addEventListener('scroll', () => {
    if (heroContent) {
        const scrolled = window.pageYOffset;
        heroContent.style.transform = `translateY(${scrolled * 0.3}px)`;
        heroContent.style.opacity = 1 - (scrolled * 0.002);
    }
});

// ===== HERO TYPING EFFECT (OPTIONAL) =====
const subtitle = document.querySelector('.hero-subtitle');
if (subtitle) {
    const text = subtitle.textContent;
    subtitle.textContent = '';
    let i = 0;
    
    const typeWriter = () => {
        if (i < text.length) {
            subtitle.textContent += text.charAt(i);
            i++;
            setTimeout(typeWriter, 100);
        }
    };
    
    setTimeout(typeWriter, 1000);
}