// Session-scoped "terminal boot" intro overlay.
const overlay = document.getElementById('boot-overlay');
const textEl = document.getElementById('boot-text');

if (overlay && textEl) {
  const reduced = window.matchMedia('(prefers-reduced-motion: reduce)').matches;
  const alreadyBooted = sessionStorage.getItem('briTunes.booted') === '1';

  if (reduced || alreadyBooted) {
    overlay.classList.add('hidden', 'gone');
    overlay.setAttribute('aria-hidden', 'true');
  } else {
    const siteName = (overlay.dataset.siteName || 'BRI-TUNES').toUpperCase();
    const lines = [
      `${siteName} OS  v1.0`,
      '',
      '> boot loader ........................ OK',
      '> initializing audio subsystem ....... OK',
      '> mounting /media .................... OK',
      '> loading neon grid shader ........... OK',
      '> linking synthwave subroutines ...... OK',
      '> ready.',
    ];
    const full = lines.join('\n');
    let i = 0;
    const cursor = '<span class="boot-cursor">&nbsp;</span>';
    const charMs = 14;
    let interval = null;

    function finish() {
      if (interval) { clearInterval(interval); interval = null; }
      textEl.innerHTML = full + '\n' + cursor;
      sessionStorage.setItem('briTunes.booted', '1');
      setTimeout(() => {
        overlay.classList.add('hidden');
        setTimeout(() => overlay.classList.add('gone'), 350);
      }, 220);
    }

    interval = setInterval(() => {
      i += 1;
      textEl.innerHTML = full.slice(0, i) + cursor;
      if (i >= full.length) finish();
    }, charMs);

    const skip = () => finish();
    overlay.addEventListener('click', skip, { once: true });
    window.addEventListener('keydown', skip, { once: true });
  }
}