// === 四大件：手機 FAB 快速選單控制 ===
document.addEventListener('DOMContentLoaded', () => {
  const fabBtn = document.getElementById('fabMenuBtn');
  const fabPanel = document.getElementById('fabMenuPanel');
  const fabMask = document.getElementById('fabMenuMask');

  function updateFabDisplay() {
    const show = window.innerWidth <= 767.98;
    fabBtn.style.display = show ? 'flex' : 'none';
    if (!show) {
      fabPanel.classList.remove('open');
      fabMask.classList.remove('open');
    }
  }

  updateFabDisplay();
  window.addEventListener('resize', updateFabDisplay);

  fabBtn.onclick = () => {
    fabPanel.classList.add('open');
    fabMask.classList.add('open');
  };

  fabMask.onclick = () => {
    fabPanel.classList.remove('open');
    fabMask.classList.remove('open');
  };

  document.querySelectorAll('#fabMenuPanel a').forEach(link => {
    link.onclick = () => {
      fabPanel.classList.remove('open');
      fabMask.classList.remove('open');
    };
  });
});