// ── RESPONSIVE SWITCH ─────────────────────────────────────────────────────────
let lastMobile = null;
window.addEventListener('resize', () => {
  const m = isMobile();
  if (m !== lastMobile) { lastMobile=m; scrollListenerAdded=false; if (channels.length) renderAll(); }
});

window.addEventListener('load', () => {
  refreshReminderSchedules();
  const savedSource = localStorage.getItem('gridtv-active-source');
  if (savedSource === 'personal') {
    const epg = localStorage.getItem('gridtv-personal-epg');
    const m3u = ALLOW_PERSONAL_M3U ? (localStorage.getItem('gridtv-personal-m3u') ?? '') : '';
    if (epg) {
      currentEpgUrl = epg;
      currentM3uUrl = m3u;
      updateSourceDropdownLabel('✏ Personal EPG');
      loadEPG(epg);
      if (m3u) loadM3U(m3u);
      return;
    }
  } else if (savedSource !== null) {
    const idx = parseInt(savedSource);
    const src = EPG_SOURCES[idx];
    if (src) {
      activeSourceIndex = idx;
      currentEpgUrl = src.epg_url;
      currentM3uUrl = src.m3u_url ?? '';
      if (src) updateSourceDropdownLabel(src.name);
    }
  }
  loadEPG(currentEpgUrl);
  loadM3U(currentM3uUrl);
});