/* ─── Mobile-only overrides (phones ≤767px) ──────────────────────────────────
 * Loaded last in base.html so it overrides earlier files.
 * Breakpoints:
 *   ≤479px — phone portrait only (nav collapse, card helper text)
 *   ≤767px — phones incl. landscape (sticky table columns)
 * Desktop is untouched.
 * ────────────────────────────────────────────────────────────────────────── */

/* ─── Navigation: icon-only pills on phones ───────────────────────────────── */
.nav-pill-icon { display: none; }

@media (max-width: 479px) {
  .site-header-nav { gap: 0.125rem; padding: 0.25rem; }
  .site-header-nav a { padding: 0.75rem; }              /* 12px around 20px icon = 44×44 */
  .nav-pill-label {
    position: absolute;
    width: 1px; height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
  }
  .nav-pill-icon { display: inline-block; }
}

@media (max-width: 359px) {
  .site-header-brand-eyebrow { display: none !important; }
}

/* ─── Admin stats: sticky student/route column when table scrolls ────────── */
@media (max-width: 767px) {
  .admin-stats-table th:first-child,
  .admin-stats-table td:first-child {
    position: sticky;
    left: 0;
    background: rgba(8, 14, 30, 0.95);
    z-index: 1;
  }
}

/* ─── Teacher grade table: sticky student column when wide ───────────────── */
@media (max-width: 767px) {
  .ex-grade-table th:first-child,
  .ex-grade-table td:first-child {
    position: sticky;
    left: 0;
    background: rgba(8, 14, 30, 0.95);
    z-index: 1;
    box-shadow: 1px 0 0 rgba(255, 255, 255, 0.04);
  }
}

/* ─── Admin overview cards: shrink the multi-segment helper line ─────────── */
@media (max-width: 479px) {
  .admin-card-helper {
    font-size: 0.65rem;
    line-height: 1.2;
  }
}