script.js

// Mobile navigation toggle
document.addEventListener('DOMContentLoaded', function() {
    const navToggle = document.querySelector('.nav-toggle');
    const navMenu = document.querySelector('.nav-menu');

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

    // Close mobile menu when clicking on a link
    document.querySelectorAll('.nav-menu a').forEach(link => {
        link.addEventListener('click', function() {
            navToggle.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'
                });
            }
        });
    });

    // Add scroll effect to header
    let lastScrollY = window.scrollY;
    
    window.addEventListener('scroll', function() {
        const header = document.querySelector('.header');
        
        if (window.scrollY > 100) {
            header.style.background = 'rgba(255, 255, 255, 0.98)';
        } else {
            header.style.background = 'rgba(255, 255, 255, 0.95)';
        }
        
        lastScrollY = window.scrollY;
    });

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

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

    // Observe project cards for animation
    document.querySelectorAll('.project-card').forEach(card => {
        card.style.opacity = '0';
        card.style.transform = 'translateY(30px)';
        card.style.transition = 'opacity 0.6s ease, transform 0.6s ease';
        observer.observe(card);
    });
});