(() => {
  const toggle = document.querySelector('[data-sidebar-toggle]');
  if (toggle) {
    toggle.addEventListener('click', () => {
      document.body.classList.toggle('sidebar-collapsed');
      localStorage.setItem('sidebar-collapsed', document.body.classList.contains('sidebar-collapsed') ? '1' : '0');
    });
  }

  if (localStorage.getItem('sidebar-collapsed') === '1') {
    document.body.classList.add('sidebar-collapsed');
  }
})();