// Shared hamburger menu toggle
(function () {
  document.addEventListener('DOMContentLoaded', () => {
    const btn = document.getElementById('hamburger-btn')
    const menu = document.getElementById('hamburger-menu')
    if (!btn || !menu) return
    btn.addEventListener('click', (e) => {
      e.stopPropagation()
      menu.classList.toggle('open')
    })
    document.addEventListener('click', () => menu.classList.remove('open'))
    // mark active link
    const current = location.pathname.split('/').pop() || 'index.html'
    menu.querySelectorAll('a').forEach(a => {
      if (a.getAttribute('href') === current) a.classList.add('active')
    })
  })
})()