/* ================================================================
   ARENA-ROUTE.CSS — deltadrills.com/ARENA (../arena-route.js sets
   html.dd-arena-only before first paint). Seth, 2026-10-12: ARENA only,
   "with the notebook and settings available"; 2026-10-13: the control
   curriculum too (Study course cyber-ai-control). Since 2026-10-15 the
   top bar is Practice · Courses · Settings; ARENA Notebooks stays hidden.
   Token-free: it only hides things.
   ================================================================ */

/* The topbar switch (practice/home-tabs.js): no notebooks, Article or Groups. */
html.dd-arena-only .home-tab:is([data-home-tab="arena-notebooks"], [data-home-tab="article"], [data-home-tab="groups"]) {
  display: none;
}

/* Advanced mode's tab strip names every page; the switch above is the nav here. */
html.dd-arena-only .topbar .tabs {
  display: none;
}

/* The account menu's rows to the pages this link leaves out. */
html.dd-arena-only .account-menu-item:is([data-goto-tab="groups"]) {
  display: none;
}

/* Courses: the kept courses' rows only (arena-route.js KEEP_STUDY + ARENA);
   no other course and no "Add your own course". */
html.dd-arena-only #courses-list-view > :not([data-course="arena"], [data-course="cyber-ai-control"]) {
  display: none;
}