script.js

// Mobile nav toggle
const navToggle = document.querySelector('.nav-toggle');
const navMenu = document.querySelector('#nav-menu');
if (navToggle && navMenu) {
  navToggle.addEventListener('click', () => {
    const expanded = navToggle.getAttribute('aria-expanded') === 'true';
    navToggle.setAttribute('aria-expanded', String(!expanded));
    navMenu.classList.toggle('show');
  });
}

// Smooth scroll
document.querySelectorAll('a[href^="#"]').forEach(anchor => {
  anchor.addEventListener('click', e => {
    const targetId = anchor.getAttribute('href');
    if (!targetId || targetId === '#') return;
    const target = document.querySelector(targetId);
    if (target) {
      e.preventDefault();
      target.scrollIntoView({ behavior: 'smooth' });
      navMenu && navMenu.classList.remove('show');
      navToggle && navToggle.setAttribute('aria-expanded', 'false');
    }
  });
});

// Theme toggle
const root = document.documentElement;
const themeToggle = document.getElementById('theme-toggle');
const savedTheme = localStorage.getItem('theme');
if (savedTheme) root.setAttribute('data-theme', savedTheme);
if (themeToggle) {
  themeToggle.addEventListener('click', () => {
    const next = root.getAttribute('data-theme') === 'light' ? 'dark' : 'light';
    root.setAttribute('data-theme', next);
    localStorage.setItem('theme', next);
  });
}

// Year in footer
const yearEl = document.getElementById('year');
if (yearEl) yearEl.textContent = String(new Date().getFullYear());