script.js

const toggle = document.getElementById('nav-toggle');
const mobile = document.getElementById('nav-mobile');

toggle.addEventListener('click', () => {
  mobile.classList.toggle('open');
});

mobile.querySelectorAll('a').forEach(link => {
  link.addEventListener('click', () => mobile.classList.remove('open'));
});

const observer = new IntersectionObserver(
  entries => {
    entries.forEach(entry => {
      if (entry.isIntersecting) {
        entry.target.style.opacity = '1';
        entry.target.style.transform = 'translateY(0)';
      }
    });
  },
  { threshold: 0.1, rootMargin: '0px 0px -40px 0px' }
);

document.querySelectorAll(
  '.project-card, .timeline-item, .skill-group, .contact-card, .gallery-item'
).forEach(el => {
  el.style.opacity = '0';
  el.style.transform = 'translateY(24px)';
  el.style.transition = 'opacity 0.6s ease, transform 0.6s ease';
  observer.observe(el);
});

// Lightbox
const lightbox = document.createElement('div');
lightbox.id = 'lightbox';
lightbox.innerHTML = '<img /><span class="lightbox-close">&times;</span>';
document.body.appendChild(lightbox);

const lbImg = lightbox.querySelector('img');
const lbClose = lightbox.querySelector('.lightbox-close');

document.querySelectorAll('.gallery-item img, .project-image img').forEach(img => {
  img.style.cursor = 'zoom-in';
  img.addEventListener('click', () => {
    lbImg.src = img.src;
    lbImg.alt = img.alt;
    lightbox.classList.add('open');
    document.body.style.overflow = 'hidden';
  });
});

function closeLightbox() {
  lightbox.classList.remove('open');
  document.body.style.overflow = '';
}

lbClose.addEventListener('click', closeLightbox);
lightbox.addEventListener('click', e => {
  if (e.target === lightbox) closeLightbox();
});
document.addEventListener('keydown', e => {
  if (e.key === 'Escape') closeLightbox();
});