/* V186: polished mobile navigation drawer for Admin and Student portals.
   Presentation-only overrides; existing click handlers and portal logic remain untouched. */
@media (max-width: 760px) {
  .portal.app-mobile-shell .sidebar {
    box-sizing: border-box !important;
    position: fixed !important;
    inset: 0 auto 0 0 !important;
    width: min(292px, 82vw) !important;
    max-width: 82vw !important;
    min-width: 0 !important;
    padding: 14px 12px calc(92px + env(safe-area-inset-bottom)) !important;
    display: flex !important;
    flex-direction: column !important;
    align-items: stretch !important;
    overflow-x: hidden !important;
    overflow-y: auto !important;
    border-radius: 0 20px 20px 0 !important;
    transform: translateX(-105%) !important;
    transition: transform .22s ease !important;
    z-index: 1200 !important;
    background: linear-gradient(180deg, #0d2237 0%, #091a2b 100%) !important;
  }
  .portal.app-mobile-shell .sidebar.mobile-open {
    transform: translateX(0) !important;
    visibility: visible !important;
  }
  .portal.app-mobile-shell .sidebar .side-brand {
    display: flex !important;
    justify-content: flex-start !important;
    align-items: center !important;
    gap: 11px !important;
    padding: 10px 8px 18px !important;
    min-height: 72px !important;
    margin: 0 0 10px !important;
  }
  .portal.app-mobile-shell .sidebar .side-brand > div:not(.logo) {
    display: block !important;
    min-width: 0 !important;
    flex: 1 1 auto !important;
  }
  .portal.app-mobile-shell .sidebar .side-brand strong {
    display: block !important;
    font-size: 12px !important;
    line-height: 1.35 !important;
    white-space: normal !important;
  }
  .portal.app-mobile-shell .sidebar .side-brand small {
    display: block !important;
    font-size: 10px !important;
  }
  .portal.app-mobile-shell .sidebar .sidebar-menu {
    display: flex !important;
    flex-direction: column !important;
    align-items: stretch !important;
    flex: 1 0 auto !important;
    gap: 3px !important;
    padding: 8px 0 14px !important;
    overflow: visible !important;
  }
  .portal.app-mobile-shell .sidebar .menu-label {
    display: block !important;
    padding: 13px 10px 6px !important;
    font-size: 9px !important;
    letter-spacing: .12em !important;
    color: #9db1c8 !important;
  }
  .portal.app-mobile-shell .sidebar button.side-link {
    display: flex !important;
    width: 100% !important;
    min-height: 44px !important;
    height: auto !important;
    justify-content: flex-start !important;
    align-items: center !important;
    gap: 12px !important;
    padding: 10px 12px !important;
    margin: 1px 0 !important;
    border: 1px solid transparent !important;
    border-radius: 12px !important;
    text-align: left !important;
    color: #dbe6f1 !important;
    font-size: 12px !important;
    line-height: 1.3 !important;
    white-space: normal !important;
  }
  .portal.app-mobile-shell .sidebar button.side-link > span:first-child {
    display: inline-flex !important;
    flex: 0 0 24px !important;
    width: 24px !important;
    justify-content: center !important;
    align-items: center !important;
    font-size: 17px !important;
  }
  .portal.app-mobile-shell .sidebar button.side-link > span:last-child {
    display: inline-block !important;
    flex: 1 1 auto !important;
    min-width: 0 !important;
    overflow-wrap: anywhere !important;
    text-align: left !important;
  }
  .portal.app-mobile-shell .sidebar button.side-link.active {
    color: #ffe4a3 !important;
    background: rgba(226, 188, 99, .13) !important;
    border-color: rgba(226, 188, 99, .25) !important;
    box-shadow: inset 3px 0 #e3bd68 !important;
  }
  .portal.app-mobile-shell .sidebar .sidebar-footer {
    display: block !important;
    flex: 0 0 auto !important;
    padding: 12px 0 0 !important;
    margin-top: 8px !important;
  }
  .portal.app-mobile-shell .sidebar .sidebar-profile {
    display: flex !important;
    width: 100% !important;
    min-width: 0 !important;
    gap: 10px !important;
    padding: 10px !important;
    border-radius: 14px !important;
    background: rgba(255,255,255,.055) !important;
  }
  .portal.app-mobile-shell .sidebar .sidebar-profile-text,
  .portal.app-mobile-shell .sidebar .sidebar-profile-text b,
  .portal.app-mobile-shell .sidebar .sidebar-profile-text small {
    display: block !important;
    min-width: 0 !important;
  }
  .portal.app-mobile-shell .sidebar .sidebar-logout { margin-top: 8px !important; }
  .portal.app-mobile-shell .mobile-bottom-nav {
    z-index: 1100 !important;
    grid-template-columns: repeat(6, minmax(0, 1fr)) !important;
    min-height: 64px !important;
    padding: 5px !important;
    gap: 2px !important;
  }
  .portal.app-mobile-shell .mobile-nav-item {
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    justify-content: center !important;
    min-width: 0 !important;
    min-height: 48px !important;
    padding: 4px 1px !important;
    overflow: hidden !important;
  }
  .portal.app-mobile-shell .mobile-nav-item span { font-size: 17px !important; }
  .portal.app-mobile-shell .mobile-nav-item small {
    display: block !important;
    width: 100% !important;
    font-size: 8px !important;
    line-height: 1.15 !important;
    text-align: center !important;
    white-space: nowrap !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
  }
}