// Night Grid: glitch one random .ng-glitch element every 6–14s (~10s average).
(() => {
  if (matchMedia('(prefers-reduced-motion: reduce)').matches) return;
  const next = () => setTimeout(tick, 6000 + Math.random() * 8000);
  const tick = () => {
    const els = document.querySelectorAll('.ng-glitch');
    const el = els[Math.floor(Math.random() * els.length)];
    if (el) {
      el.classList.add('is-glitching');
      el.addEventListener('animationend', () => el.classList.remove('is-glitching'), { once: true });
    }
    next();
  };
  next();
})();