/* ============================================================
   SimpliTrain LMS — Component CSS
   common/css/components.css
   Scope: All reusable UI components.
   Depends on: base.css (must be loaded first)
   Naming: BEM (block__element--modifier)
   ============================================================ */

:root {
  --uaf-page-bg: #f0f2f5;
}

/* ── 1. NAVIGATION / HEADER ─────────────────────────────────── */
.app-header {
  --header-bg: #ffffff;
  --header-border: #c8cde0;
  --header-text: #181c32;
  --header-text-muted: #565b72;
  --header-hover-bg: #f0f2f8;
  --header-active-bg: transparent;
  --header-active-text: #4f46e5;
  height: var(--nav-height);
  background: var(--header-bg);
  border-bottom: 1px solid var(--header-border);
  display: flex;
  align-items: center;
  padding: 0;
  padding-inline: var(--layout-content-inline);
  position: sticky;
  top: 0;
  z-index: 200;
  box-shadow: 0 1px 0 rgba(15, 23, 42, 0.06), 0 2px 8px rgba(15, 23, 42, 0.06);
  gap: var(--space-4);
  color: var(--header-text);
}

.app-header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  margin-inline-end: var(--space-8);
  flex-shrink: 0;
}
.app-header__logo-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-inverse);
  font-weight: var(--fw-bold);
  font-size: var(--text-sm);
}
.app-header__logo-text {
  font-weight: var(--fw-bold);
  font-size: var(--text-md);
  color: var(--text-primary);
}

.app-header__nav {
  display: flex;
  align-items: stretch;
  gap: 0;
  flex: 1 1 auto;
  min-width: 0;
  overflow-x: auto;
  overflow-y: visible;
  scrollbar-width: none;
}
.app-header__nav::-webkit-scrollbar {
  display: none;
}
.app-header__nav-link {
  padding: 0 13px;
  border-radius: 0;
  border-bottom: 3px solid transparent;
  min-height: var(--nav-height);
  font-size: 13px;
  font-weight: var(--fw-medium);
  color: var(--header-text-muted);
  cursor: pointer;
  flex-shrink: 0;
  overflow: visible;
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
  white-space: nowrap;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.app-header__nav-link:hover {
  background: var(--header-hover-bg);
  color: var(--color-primary, #4f46e5);
  text-decoration: none;
  border-bottom-color: var(--color-primary, #4f46e5);
}
.app-header__nav-link--active {
  background: transparent;
  color: var(--color-primary, #4f46e5);
  border-bottom-color: var(--color-primary, #4f46e5);
  font-weight: var(--fw-semi);
}

.app-header__actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-inline-start: auto;
  flex-shrink: 0;
}
.app-header__actions .btn.btn--icon.btn--ghost {
  font-size: 1.25rem;
  color: var(--header-text-muted);
  border-color: var(--header-border);
  background: var(--header-hover-bg);
}
.app-header__actions .btn.btn--icon.btn--ghost:hover {
  color: var(--header-active-text);
  background: var(--header-active-bg);
  border-color: var(--header-active-text);
}
.app-header__actions .btn.btn--icon.btn--ghost i {
  font-size: 1.25rem;
  color: inherit;
}
/* Register: anchor + Bootstrap .btn cascade must keep inverse text on primary fill */
.app-header__actions a.btn.btn--primary,
.app-header__actions a.btn.btn--primary:hover,
.app-header__actions a.btn.btn--primary:focus {
  color: var(--text-inverse) !important;
  text-decoration: none;
}

.app-header__search-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--surface-hover);   /* distinct from white nav bar */
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-3);
  cursor: pointer;
  color: var(--text-gray);
  font-size: var(--text-sm);
  transition: border-color var(--transition-fast);
}
.app-header__search-btn:hover { border-color: var(--color-primary); }
.app-header__search-btn kbd {
  background: var(--surface-border);
  border-radius: var(--radius-sm);
  padding: 1px var(--space-1);
  font-size: var(--text-xs);
  margin-left: var(--space-2);
}

.app-header__icon-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: var(--surface-hover);  /* distinct from white nav bar */
  border: 1px solid var(--surface-border);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-gray);
  position: relative;
  transition: border-color var(--transition-fast), color var(--transition-fast);
}
.app-header__icon-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.app-header__icon-btn .badge-dot {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 7px;
  height: 7px;
  background: var(--color-danger);
  border-radius: 50%;
  border: 2px solid var(--surface-card);
}

.app-header__theme-btn {
  background: none;
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: var(--text-md);
  padding: var(--space-1) var(--space-2);
  color: var(--text-gray);
  transition: border-color var(--transition-fast);
  line-height: 1;
}
.app-header__theme-btn:hover { border-color: var(--color-primary); }

.app-header__user {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-md);
  cursor: pointer;
  border: 1px solid var(--surface-border);
  background: var(--surface-card);
  transition: border-color var(--transition-fast);
  text-decoration: none;
}
.app-header__user:hover { border-color: var(--color-primary); text-decoration: none; }

.avatar {
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--fw-bold);
  flex-shrink: 0;
  color: var(--text-inverse);
  background: linear-gradient(135deg, var(--color-primary), var(--color-info));
}
.avatar--sm  { width: 28px; height: 28px; font-size: var(--text-xs); border-radius: var(--radius-sm); }
.avatar--md  { width: 36px; height: 36px; font-size: var(--text-sm); }
.avatar--lg  { width: 48px; height: 48px; font-size: var(--text-md); border-radius: var(--radius-lg); }
.avatar--xl  { width: 72px; height: 72px; font-size: var(--text-2xl); border-radius: var(--radius-xl); }
.avatar--round { border-radius: 50%; }

/* Mobile nav toggle */
.app-header__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: var(--space-2);
  background: none;
  border: none;
}
.app-header__hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--header-text);
  border-radius: 2px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

@media (max-width: 991.98px) {
  .app-header__nav { display: none; }
  .app-header__hamburger { display: flex; }
  .app-header__search-btn kbd { display: none; }
}

/* Light top nav — fixed tokens on white (WCAG AA); overrides OS dark mode on header only */
#top-bar .app-header,
[data-theme="dark"] #top-bar .app-header,
[data-theme="dark"] .app-header {
  --header-bg: #ffffff;
  --header-border: #c8cde0;
  --header-text: #181c32;
  --header-text-muted: #565b72;
  --header-hover-bg: #f0f2f8;
  --header-active-bg: transparent;
  --header-active-text: #4f46e5;
  background: #ffffff !important;
  border-bottom-color: #c8cde0 !important;
  color: #181c32 !important;
}

#top-bar .app-header .app-header__nav-link,
[data-theme="dark"] #top-bar .app-header .app-header__nav-link,
[data-theme="dark"] .app-header .app-header__nav-link {
  color: #565b72 !important;
}

#top-bar .app-header .app-header__nav-link:hover,
[data-theme="dark"] #top-bar .app-header .app-header__nav-link:hover,
[data-theme="dark"] .app-header .app-header__nav-link:hover {
  color: #4f46e5 !important;
  background: #f0f2f8 !important;
  border-bottom-color: #4f46e5 !important;
}

#top-bar .app-header .app-header__nav-link--active,
[data-theme="dark"] #top-bar .app-header .app-header__nav-link--active,
[data-theme="dark"] .app-header .app-header__nav-link--active {
  color: #4f46e5 !important;
  background: transparent !important;
  border-bottom-color: #4f46e5 !important;
}

#top-bar .app-header .app-header__user-btn,
[data-theme="dark"] #top-bar .app-header .app-header__user-btn,
[data-theme="dark"] .app-header .app-header__user-btn,
#top-bar .app-header .app-header__user-name,
[data-theme="dark"] #top-bar .app-header .app-header__user-name,
[data-theme="dark"] .app-header .app-header__user-name {
  color: #181c32 !important;
}

#top-bar .app-header .app-header__actions .btn.btn--icon.btn--ghost,
[data-theme="dark"] #top-bar .app-header .app-header__actions .btn.btn--icon.btn--ghost,
[data-theme="dark"] .app-header .app-header__actions .btn.btn--icon.btn--ghost,
#top-bar .app-header .app-header__actions .btn.btn--sm.btn--ghost,
[data-theme="dark"] #top-bar .app-header .app-header__actions .btn.btn--sm.btn--ghost,
[data-theme="dark"] .app-header .app-header__actions .btn.btn--sm.btn--ghost {
  color: #565b72 !important;
  background: #f0f2f8 !important;
  border-color: #c8cde0 !important;
}

#top-bar .app-header .app-header__actions .btn.btn--icon.btn--ghost i,
[data-theme="dark"] #top-bar .app-header .app-header__actions .btn.btn--icon.btn--ghost i,
[data-theme="dark"] .app-header .app-header__actions .btn.btn--icon.btn--ghost i {
  color: inherit !important;
}

@media (prefers-color-scheme: dark) {
  #top-bar .app-header,
  .app-header {
    background: #ffffff !important;
    border-bottom-color: #c8cde0 !important;
    color: #181c32 !important;
  }

  #top-bar .app-header .app-header__nav-link,
  .app-header .app-header__nav-link {
    color: #565b72 !important;
  }

  #top-bar .app-header .app-header__nav-link:hover,
  .app-header .app-header__nav-link:hover {
    color: #4f46e5 !important;
    background: #f0f2f8 !important;
    border-bottom-color: #4f46e5 !important;
  }

  #top-bar .app-header .app-header__nav-link--active,
  .app-header .app-header__nav-link--active {
    color: #4f46e5 !important;
    background: transparent !important;
    border-bottom-color: #4f46e5 !important;
  }

  #top-bar .app-header .app-header__user-btn,
  .app-header .app-header__user-btn,
  #top-bar .app-header .app-header__user-name,
  .app-header .app-header__user-name {
    color: #181c32 !important;
  }

  #top-bar .app-header .app-header__actions .btn.btn--icon.btn--ghost,
  .app-header .app-header__actions .btn.btn--icon.btn--ghost,
  #top-bar .app-header .app-header__actions .btn.btn--sm.btn--ghost,
  .app-header .app-header__actions .btn.btn--sm.btn--ghost {
    color: #565b72 !important;
    background: #f0f2f8 !important;
    border-color: #c8cde0 !important;
  }
}

#top-bar .student-topnav,
[data-theme="dark"] #top-bar .student-topnav,
[data-theme="dark"] .student-topnav {
  --header-bg: #ffffff;
  --header-border: #c8cde0;
  --header-text: #181c32;
  --header-text-muted: #565b72;
  --header-hover-bg: #f0f2f8;
  --header-active-bg: transparent;
  --header-active-text: #4f46e5;
  background: #ffffff !important;
  border-bottom-color: #c8cde0 !important;
  color: #181c32 !important;
}

#top-bar .student-topnav .student-topnav__link,
[data-theme="dark"] #top-bar .student-topnav .student-topnav__link {
  color: #565b72 !important;
}

#top-bar .student-topnav .student-topnav__link:hover,
[data-theme="dark"] #top-bar .student-topnav .student-topnav__link:hover {
  color: #4f46e5 !important;
  background: #f0f2f8 !important;
  border-bottom-color: #4f46e5 !important;
}

#top-bar .student-topnav .student-topnav__link.is-active,
[data-theme="dark"] #top-bar .student-topnav .student-topnav__link.is-active {
  color: #4f46e5 !important;
  background: transparent !important;
  border-bottom-color: #4f46e5 !important;
}

#top-bar .student-topnav .student-topnav__language,
#top-bar .student-topnav .student-topnav__icon,
#top-bar .student-topnav .student-topnav__user,
#top-bar .student-topnav .student-topnav__name,
[data-theme="dark"] #top-bar .student-topnav .student-topnav__language,
[data-theme="dark"] #top-bar .student-topnav .student-topnav__icon,
[data-theme="dark"] #top-bar .student-topnav .student-topnav__user,
[data-theme="dark"] #top-bar .student-topnav .student-topnav__name {
  color: #565b72 !important;
}

#top-bar .student-topnav .student-topnav__user,
[data-theme="dark"] #top-bar .student-topnav .student-topnav__user {
  color: #181c32 !important;
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
}

#top-bar .student-topnav .student-topnav__user-wrap:hover,
#top-bar .student-topnav .student-topnav__user-wrap:focus-within,
#top-bar .student-topnav .student-topnav__user-wrap:has(.student-topnav__user.show),
#top-bar .app-header .student-topnav__user-wrap:hover,
#top-bar .app-header .student-topnav__user-wrap:focus-within,
#top-bar .app-header .student-topnav__user-wrap:has(.app-header__user-btn[aria-expanded="true"]),
[data-theme="dark"] #top-bar .student-topnav .student-topnav__user-wrap:hover,
[data-theme="dark"] #top-bar .student-topnav .student-topnav__user-wrap:focus-within {
  background: #f0f2f8 !important;
}

#top-bar .student-topnav .student-topnav__icon:hover,
[data-theme="dark"] #top-bar .student-topnav .student-topnav__icon:hover {
  color: #0f172a !important;
  background: #f0f2f8 !important;
}

@media (prefers-color-scheme: dark) {
  #top-bar .student-topnav,
  .student-topnav {
    background: #ffffff !important;
    border-bottom-color: #c8cde0 !important;
    color: #181c32 !important;
  }

  #top-bar .student-topnav .student-topnav__link,
  .student-topnav .student-topnav__link {
    color: #565b72 !important;
  }

  #top-bar .student-topnav .student-topnav__link:hover,
  .student-topnav .student-topnav__link:hover {
    color: #4f46e5 !important;
    background: #f0f2f8 !important;
    border-bottom-color: #4f46e5 !important;
  }

  #top-bar .student-topnav .student-topnav__link.is-active,
  .student-topnav .student-topnav__link.is-active {
    color: #4f46e5 !important;
    background: transparent !important;
    border-bottom-color: #4f46e5 !important;
  }

  #top-bar .student-topnav .student-topnav__user,
  .student-topnav .student-topnav__user {
    color: #181c32 !important;
    background: transparent !important;
    border: none !important;
  }

  #top-bar .student-topnav .student-topnav__user-wrap:hover,
  #top-bar .student-topnav .student-topnav__user-wrap:focus-within,
  .student-topnav .student-topnav__user-wrap:hover,
  .student-topnav .student-topnav__user-wrap:focus-within {
    background: #f0f2f8 !important;
  }
}

.app-header__actions .btn.btn--sm.btn--ghost {
  color: var(--header-active-text);
  border: 1px solid var(--header-border);
  background: var(--header-bg);
}
.app-header__actions .btn.btn--sm.btn--ghost:hover {
  color: var(--header-active-text);
  background: var(--header-active-bg);
  border-color: var(--header-active-text);
}

/* Mobile drawer nav */
.mobile-nav {
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--surface-card);
  z-index: 190;
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  overflow-y: auto;
  transform: translateX(-100%);
  transition: transform var(--transition-normal);
}
.mobile-nav--open { transform: translateX(0); }
[dir="rtl"] .mobile-nav { transform: translateX(100%); }
[dir="rtl"] .mobile-nav--open { transform: translateX(0); }
.mobile-nav__link {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-md);
  font-weight: var(--fw-medium);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
}
.mobile-nav__link:hover { background: var(--surface-hover); color: var(--text-primary); text-decoration: none; }
.mobile-nav__link--active { background: var(--color-primary-light); color: var(--color-primary); }

/* ── 2. SITE FOOTER ─────────────────────────────────────────── */
.app-footer {
  border-top: 1px solid var(--surface-border);
  padding: var(--space-5) var(--space-8);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--text-sm);
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: var(--space-4);
}
.app-footer__nav {
  display: flex;
  gap: var(--space-5);
  list-style: none;
}
.app-footer__nav a {
  color: var(--color-primary);
  font-size: var(--text-sm);
}
@media (max-width: 575.98px) {
  .app-footer { flex-direction: column; text-align: center; padding: var(--space-4); }
}

/* ── 3. CARD ────────────────────────────────────────────────── */
.card {
  background: var(--surface-card);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(200,205,224,.75);
  box-shadow: 0 1px 3px rgba(0,0,0,.04), 0 4px 12px rgba(76,87,125,.08);
  transition: box-shadow var(--transition-normal), transform var(--transition-normal), border-color var(--transition-normal);
}
.card--hover:hover,
.card--link:hover {
  box-shadow: 0 4px 12px rgba(0,0,0,.06), 0 16px 40px rgba(76,87,125,.16);
  transform: translateY(-3px);
  border-color: rgba(0,105,186,.22);
  text-decoration: none;
}
.card__header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--surface-border);
}
.card__title {
  font-size: var(--text-md);
  font-weight: var(--fw-bold);
  color: var(--text-primary);
  flex: 1;
}
.card__body {
  padding: var(--space-5);
}
.card__footer {
  padding: var(--space-3) var(--space-5);
  border-top: 1px solid var(--surface-border);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
}

/* ── 4. BUTTONS ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  font-weight: var(--fw-semi);
  line-height: 1.5;
  cursor: pointer;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background var(--transition-fast),
              color var(--transition-fast),
              border-color var(--transition-fast),
              box-shadow var(--transition-fast);
  white-space: nowrap;
  user-select: none;
}
.btn:disabled, .btn--disabled {
  opacity: .55;
  cursor: not-allowed;
  pointer-events: none;
}
.btn--xs   { padding: 2px var(--space-2); font-size: var(--text-xs); border-radius: var(--radius-sm); }
.btn--sm   { padding: var(--space-1) var(--space-3); font-size: var(--text-sm); }
.btn--lg   { padding: var(--space-3) var(--space-6); font-size: var(--text-md); }
.btn--full { width: 100%; }

.btn--primary {
  background: linear-gradient(135deg, #1a7fd4 0%, #005aa8 100%);
  color: var(--text-inverse);
  border-color: transparent;
  box-shadow: 0 2px 8px rgba(0,105,186,.28);
}
.btn--primary:hover {
  background: linear-gradient(135deg, #106dc0 0%, #004d95 100%);
  border-color: transparent;
  box-shadow: 0 4px 18px rgba(0,105,186,.40);
  transform: translateY(-1px);
  text-decoration: none;
}
.btn--primary:active {
  transform: translateY(0);
  box-shadow: 0 1px 4px rgba(0,105,186,.22);
}

.btn--secondary {
  background: var(--surface-card);    /* white — never page bg */
  color: var(--text-secondary);
  border-color: #a8b0cc;              /* stronger border, clearly visible on page bg */
}
.btn--secondary:hover {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
  color: var(--color-primary);
  text-decoration: none;
}

.btn--success {
  background: var(--color-success);
  color: var(--text-inverse);
  border-color: var(--color-success);
}
.btn--danger {
  background: var(--color-danger);
  color: var(--text-inverse);
  border-color: var(--color-danger);
}
.btn--danger-light {
  background: var(--color-danger-light);
  color: var(--color-danger);
  border-color: var(--color-danger-light);
}
.btn--danger-light:hover { background: var(--color-danger); color: var(--text-inverse); }
.btn--warning {
  background: var(--color-warning);
  color: #1a1200;
  border-color: var(--color-warning);
}
.btn--ghost {
  background: transparent;
  color: var(--color-primary);
  border-color: transparent;
}
.btn--ghost:hover { background: var(--color-primary-light); text-decoration: none; }

/* ── 5. BADGE ───────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px var(--space-2);
  border-radius: var(--radius-pill);
  font-size: var(--text-xs);
  font-weight: var(--fw-semi);
  line-height: 1.4;
  white-space: nowrap;
}
.badge--primary { background: var(--color-primary-light); color: var(--color-primary); }
.badge--success { background: var(--color-success-light); color: #1a6b3c; }
.badge--warning { background: var(--color-warning-light); color: #7a5300; }
.badge--danger  { background: var(--color-danger-light);  color: #b5153a; }
.badge--info    { background: var(--color-info-light);    color: #4a1fa0; }
.badge--gray    { background: var(--surface-hover);       color: var(--text-gray); }
.badge--dark    { background: var(--text-primary);        color: var(--text-inverse); }

/* ── 6. FORM CONTROLS ───────────────────────────────────────── */
.form__group {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  margin-bottom: var(--space-4);
}
.form__label {
  font-size: var(--text-sm);
  font-weight: var(--fw-medium);
  color: var(--text-secondary);
}
.form__label--required::after {
  content: ' *';
  color: var(--color-danger);
}
.form__control {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  background: var(--surface-card);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: var(--text-base);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  line-height: var(--lh-normal);
}
.form__control:hover { border-color: var(--color-primary); }
.form__control:focus {
  border-color: var(--color-primary);
  box-shadow: var(--focus-ring);
  outline: none;
}
.form__control::placeholder { color: var(--text-muted); }
.form__control:disabled { background: var(--surface-hover); opacity: .65; cursor: not-allowed; }
.form__control--readonly { background: var(--surface-hover); cursor: default; }
.form__control--error { border-color: var(--color-danger); }
.form__control--error:focus { box-shadow: 0 0 0 3px rgba(241,65,108,.25); }

textarea.form__control { resize: vertical; min-height: 80px; }
select.form__control { appearance: none; cursor: pointer; }

.form__hint {
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-top: 2px;
}
.form__error {
  font-size: var(--text-xs);
  color: var(--color-danger);
  font-weight: var(--fw-medium);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}
.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}
@media (max-width: 575.98px) {
  .form__row { grid-template-columns: 1fr; }
}

/* Checkbox / Radio */
.form__check {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
}
.form__check input[type="checkbox"],
.form__check input[type="radio"] {
  width: 16px;
  height: 16px;
  accent-color: var(--color-primary);
  cursor: pointer;
  flex-shrink: 0;
}

/* Toggle switch */
.toggle {
  position: relative;
  width: 40px;
  height: 22px;
  flex-shrink: 0;
}
.toggle input { opacity: 0; width: 0; height: 0; position: absolute; }
.toggle__track {
  position: absolute;
  inset: 0;
  background: var(--surface-border);
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: background var(--transition-fast);
}
.toggle input:checked + .toggle__track { background: var(--color-primary); }
.toggle__track::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 16px;
  height: 16px;
  background: var(--text-inverse);
  border-radius: 50%;
  transition: transform var(--transition-fast);
  box-shadow: var(--shadow-sm);
}
.toggle input:checked + .toggle__track::after { transform: translateX(18px); }
[dir="rtl"] .toggle__track::after { left: auto; right: 3px; }
[dir="rtl"] .toggle input:checked + .toggle__track::after { transform: translateX(-18px); }

/* ── 7. TABLE ───────────────────────────────────────────────── */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-base);
}
.data-table th {
  background: #2d3470;              /* dark navy — clearly distinct from page bg and card */
  color: #ffffff;
  font-size: var(--text-xs);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: .6px;
  padding: var(--space-3) var(--space-4);
  text-align: start;
  border-bottom: 1px solid var(--surface-border);
  white-space: nowrap;
}
.data-table td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--surface-border);
  vertical-align: middle;
  color: var(--text-secondary);
}
.data-table tbody tr:last-child td { border-bottom: none; }
.data-table tbody tr:hover td { background: var(--surface-hover); }
.data-table--clickable tbody tr { cursor: pointer; }
.data-table--striped tbody tr:nth-child(even) td { background: #f0f2fa; }  /* distinct light stripe, not page bg */
.data-table__empty td {
  text-align: center;
  padding: var(--space-12) var(--space-6);
  color: var(--text-muted);
}
/* Responsive table wrapper */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }

/* ── 8. TABS ────────────────────────────────────────────────── */
.tabs {
  border-bottom: 2px solid var(--surface-border);
  display: flex;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
  margin-bottom: var(--space-5);
}
.tabs::-webkit-scrollbar { display: none; }
.tabs__item {
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-base);
  font-weight: var(--fw-medium);
  color: var(--text-gray);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: color var(--transition-fast), border-color var(--transition-fast);
  white-space: nowrap;
  user-select: none;
}
.tabs__item:hover { color: var(--text-primary); }
.tabs__item--active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  font-weight: var(--fw-semi);
}
.tab-pane { display: none; }
.tab-pane--active { display: block; }

/* ── 9. MODAL ───────────────────────────────────────────────── */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}
.modal-backdrop--open {
  opacity: 1;
  visibility: visible;
}
.modal {
  background: var(--surface-card);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 560px;
  max-height: calc(100vh - 48px);
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  transform: translateY(16px) scale(.97);
  transition: transform var(--transition-normal);
}
.modal-backdrop--open .modal { transform: translateY(0) scale(1); }
.modal--sm { max-width: 400px; }
.modal--lg { max-width: 720px; }
.modal--xl { max-width: 960px; }
.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--surface-border);
  position: sticky;
  top: 0;
  background: var(--surface-card);
  z-index: 1;
}
.modal__title { font-size: var(--text-lg); font-weight: var(--fw-bold); }
.modal__close {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: var(--text-xl);
  transition: background var(--transition-fast), color var(--transition-fast);
  line-height: 1;
}
.modal__close:hover { background: var(--surface-hover); color: var(--text-primary); }
.modal__body { padding: var(--space-6); }
.modal__footer {
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--surface-border);
  display: flex;
  justify-content: flex-end;
  gap: var(--space-3);
}
[dir="rtl"] .modal__footer { flex-direction: row-reverse; }
@media (max-width: 575.98px) {
  .modal-backdrop { align-items: flex-end; padding: 0; }
  .modal { border-radius: var(--radius-xl) var(--radius-xl) 0 0; max-height: 90vh; }
}

/* ── 10. TOAST ──────────────────────────────────────────────── */
.toast-container {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: 600;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  pointer-events: none;
}
[dir="rtl"] .toast-container { right: auto; left: var(--space-6); }
@media (max-width: 575.98px) {
  .toast-container { left: var(--space-4); right: var(--space-4); bottom: var(--space-4); }
}
.toast {
  background: #1e1e2d;
  color: var(--text-inverse);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  font-weight: var(--fw-medium);
  box-shadow: var(--shadow-lg);
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  max-width: 360px;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}
.toast--show { opacity: 1; transform: translateY(0); }
.toast--success { border-inline-start: 4px solid var(--color-success); }
.toast--error   { border-inline-start: 4px solid var(--color-danger); }
.toast--warning { border-inline-start: 4px solid var(--color-warning); }
.toast--info    { border-inline-start: 4px solid var(--color-primary); }

/* ── 11. SEARCH OVERLAY ─────────────────────────────────────── */
.search-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.6);
  z-index: 400;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 80px;
  padding-inline: var(--space-4);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}
.search-overlay--open { opacity: 1; visibility: visible; }
.search-overlay__box {
  background: var(--surface-card);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 640px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.search-overlay__input-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--surface-border);
}
.search-overlay__input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  font-size: var(--text-md);
  color: var(--text-primary);
}
.search-overlay__input::placeholder { color: var(--text-muted); }
.search-overlay__results { padding: var(--space-3) 0; max-height: 420px; overflow-y: auto; }
.search-overlay__group-label {
  font-size: var(--text-xs);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: .6px;
  color: var(--text-muted);
  padding: var(--space-2) var(--space-5);
}
.search-overlay__item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-5);
  cursor: pointer;
  transition: background var(--transition-fast);
}
.search-overlay__item:hover { background: var(--surface-hover); }
.search-overlay__footer {
  border-top: 1px solid var(--surface-border);
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-xs);
  color: var(--text-muted);
  display: flex;
  gap: var(--space-4);
}

/* ── 12. PROGRESS ───────────────────────────────────────────── */
.progress {
  height: 6px;
  background: var(--surface-border);
  border-radius: var(--radius-pill);
  overflow: hidden;
}
.progress--sm { height: 4px; }
.progress--lg { height: 10px; }
.progress__bar {
  height: 100%;
  border-radius: var(--radius-pill);
  background: var(--color-primary);
  transition: width var(--transition-slow);
}
.progress__bar--success { background: var(--color-success); }
.progress__bar--warning { background: var(--color-warning); }
.progress__bar--danger  { background: var(--color-danger); }

/* ── 13. COURSE CARD ────────────────────────────────────────── */
.course-card {
  background: var(--surface-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--surface-border);
  overflow: hidden;
  cursor: pointer;
  transition: box-shadow var(--transition-normal), transform var(--transition-normal), border-color var(--transition-fast);
  display: flex;
  flex-direction: column;
}
.course-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  border-color: var(--color-primary);
  text-decoration: none;
}
.course-card__thumb {
  height: 140px;
  background: linear-gradient(135deg, #0078d4, #004578);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
}
.course-card__thumb--blue   { background: linear-gradient(135deg,#0078d4,#004578); }
.course-card__thumb--purple { background: linear-gradient(135deg,#7239ea,#4a1a9a); }
.course-card__thumb--green  { background: linear-gradient(135deg,#50cd89,#1a7a4a); }
.course-card__thumb--red    { background: linear-gradient(135deg,#f1416c,#9b1040); }
.course-card__thumb--teal   { background: linear-gradient(135deg,#00b8d9,#007090); }
.course-card__thumb--dark   { background: linear-gradient(135deg,#1e1e2d,#3d3d5c); }
.course-card__thumb--orange { background: linear-gradient(135deg,#ffc700,#e07b00); }
.course-card__thumb-badge {
  position: absolute;
  top: var(--space-2);
  left: var(--space-2);
}
[dir="rtl"] .course-card__thumb-badge { left: auto; right: var(--space-2); }
.course-card__body {
  padding: var(--space-3) var(--space-4);
  flex: 1;
}
.course-card__category {
  font-size: var(--text-xs);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: .5px;
  color: var(--color-primary);
  margin-bottom: var(--space-1);
}
.course-card__title {
  font-size: var(--text-base);
  font-weight: var(--fw-semi);
  color: var(--text-primary);
  line-height: var(--lh-tight);
  margin-bottom: var(--space-2);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.course-card__meta {
  font-size: var(--text-xs);
  color: var(--text-muted);
}
.course-card__footer {
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--surface-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

/* Responsive grid */
.courses-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}
.courses-grid--4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 991.98px)  { .courses-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 575.98px)  { .courses-grid, .courses-grid--4 { grid-template-columns: 1fr; } }

/* ── 14. SECTION HEADER ─────────────────────────────────────── */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-5);
  flex-wrap: wrap;
  gap: var(--space-3);
}
.section-header__title {
  font-size: var(--text-xl);
  font-weight: var(--fw-bold);
  color: var(--text-primary);
}
.section-header__sub {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-top: 2px;
}

/* ── 15. STAT TILE ──────────────────────────────────────────── */
.stat-tile {
  background: var(--surface-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--surface-border);
  padding: var(--space-5) var(--space-4);
  text-align: center;
  cursor: pointer;
  transition: box-shadow var(--transition-normal), transform var(--transition-normal), border-color var(--transition-fast);
}
.stat-tile:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  border-color: var(--color-primary);
}
.stat-tile__icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-3);
}
.stat-tile__value {
  font-size: var(--text-2xl);
  font-weight: var(--fw-bold);
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: var(--space-1);
}
.stat-tile__label {
  font-size: var(--text-xs);
  font-weight: var(--fw-medium);
  color: var(--text-muted);
}
.stat-tile__sub {
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-top: var(--space-1);
}

/* ── 16. HERO BANNER ────────────────────────────────────────── */
.hero-banner {
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg,#1e1e2d 0%,#2d2d5e 55%,#1a3a5c 100%);
  padding: var(--space-10) var(--space-12);
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-8);
  overflow: hidden;
  position: relative;
}
.hero-banner::before {
  content: '';
  position: absolute;
  top: -40px;
  right: 240px;
  width: 200px;
  height: 200px;
  background: rgba(0,158,247,.15);
  border-radius: 50%;
  pointer-events: none;
}
.hero-banner::after {
  content: '';
  position: absolute;
  bottom: -60px;
  right: 80px;
  width: 280px;
  height: 280px;
  background: rgba(114,57,234,.1);
  border-radius: 50%;
  pointer-events: none;
}
.hero-banner__content { z-index: 1; max-width: 60%; }
.hero-banner__tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  background: rgba(0,158,247,.2);
  color: #7dc8f7;
  border-radius: var(--radius-pill);
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: var(--fw-semi);
  margin-bottom: var(--space-3);
}
.hero-banner__title {
  font-size: var(--text-3xl);
  font-weight: var(--fw-bold);
  color: var(--text-inverse);
  line-height: var(--lh-tight);
  margin-bottom: var(--space-2);
}
.hero-banner__sub {
  font-size: var(--text-base);
  color: rgba(255,255,255,.65);
  margin-bottom: var(--space-5);
  max-width: 440px;
  line-height: var(--lh-relaxed);
}
.hero-banner__actions { display: flex; gap: var(--space-3); flex-wrap: wrap; }
.hero-banner__visual {
  width: 220px;
  height: 160px;
  background: rgba(255,255,255,.06);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255,255,255,.1);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
  flex-shrink: 0;
}
@media (max-width: 767.98px) {
  .hero-banner { padding: var(--space-6) var(--space-5); flex-direction: column; align-items: flex-start; }
  .hero-banner__content { max-width: 100%; }
  .hero-banner__visual { display: none; }
  .hero-banner__title { font-size: var(--text-2xl); }
}

/* ── 17. ACCORDION ──────────────────────────────────────────── */
.accordion__item {
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: var(--space-3);
}
.accordion__trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  background: var(--surface-card);
  border: none;
  cursor: pointer;
  font-size: var(--text-base);
  font-weight: var(--fw-semi);
  color: var(--text-primary);
  text-align: left;
  gap: var(--space-3);
  transition: background var(--transition-fast);
}
.accordion__trigger:hover { background: var(--surface-hover); }
[dir="rtl"] .accordion__trigger { text-align: right; }
.accordion__icon {
  flex-shrink: 0;
  color: var(--text-muted);
  transition: transform var(--transition-fast);
}
.accordion__item--open .accordion__icon { transform: rotate(180deg); }
.accordion__panel {
  display: none;
  border-top: 1px solid var(--surface-border);
}
.accordion__item--open .accordion__panel { display: block; }
.accordion__body { padding: var(--space-5); }

/* ── 18. SIDEBAR NAV (My Courses / Admin) ───────────────────── */
.sidebar-nav {
  width: var(--sidebar-w);
  flex-shrink: 0;
}
.sidebar-nav__section-label {
  font-size: var(--text-xs);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: .6px;
  color: var(--text-muted);
  padding: var(--space-2) var(--space-3) var(--space-1);
}
.sidebar-nav__item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: var(--fw-medium);
  color: var(--text-gray);
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast);
  text-decoration: none;
}
.sidebar-nav__item:hover { background: var(--surface-hover); color: var(--text-primary); text-decoration: none; }
.sidebar-nav__item--active {
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-weight: var(--fw-semi);
}
.sidebar-nav__item .badge { margin-inline-start: auto; }
@media (max-width: 767.98px) {
  .sidebar-nav { width: 100%; }
}

/* ══════════════════════════════════════════════════════════════
   19. MISSING CLASS ALIASES & EXTENSIONS
   Covers classes used in HTML that differ from original CSS names
   ══════════════════════════════════════════════════════════════ */

/* ── Header inner wrapper ─────────────────────────────────── */
.app-header__inner {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  width: 100%;
  height: 100%;
}

/* ── Logo / Brand (alias of __logo) ──────────────────────── */
.app-header__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  flex-shrink: 0;
  margin-inline-end: var(--space-4);
}
.app-header__brand:hover { text-decoration: none; }
.app-header__brand-name {
  font-weight: var(--fw-bold);
  font-size: var(--text-md);
  color: var(--header-text);
  white-space: nowrap;
}

.app-header__brand-logo {
  display: block;
  width: auto;
  height: auto;
  max-height: min(40px, calc(var(--nav-height) - 20px));
  max-width: min(220px, 38vw);
  object-fit: contain;
  object-position: center;
}

/* ── Search trigger ───────────────────────────────────────── */
.app-header__search-trigger {
  flex: 1;
  max-width: 480px;
}
.app-header__search-placeholder {
  color: var(--text-muted);
  font-size: var(--text-sm);
  flex: 1;
}
.app-header__shortcut {
  background: var(--surface-border);
  border-radius: var(--radius-sm);
  padding: 1px var(--space-1);
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-left: var(--space-2);
  font-family: var(--font-mono);
}

/* ── Notification button & badge ─────────────────────────── */
.app-header__notif-btn {
  position: relative;
}
.app-header__notif-badge {
  position: absolute;
  top: -4px;
  inset-inline-end: -4px;
  min-width: 18px;
  height: 18px;
  border-radius: 9999px;
  background: var(--color-danger);
  color: #fff;
  font-size: 12px;
  font-weight: var(--fw-bold);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 3px;
  pointer-events: none;
}

/* ── Avatar wrap (dropdown container) ────────────────────── */
.app-header__avatar-wrap {
  position: relative;
  flex-shrink: 0;
}

/* ── User profile button (avatar + name in nav) ──────────── */
.app-header__user-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--header-bg);
  border: 1px solid var(--header-border);
  cursor: pointer;
  padding: 4px 6px;
  border-radius: var(--radius-md);
  color: var(--header-text);
  transition: background var(--transition-fast), border-color var(--transition-fast);
}
.app-header__user-btn:hover {
  background: var(--header-hover-bg);
  border-color: var(--header-active-text);
}
.app-header__user-name {
  font-size: var(--text-sm);
  font-weight: var(--fw-semibold);
  color: var(--header-text);
  max-width: 140px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
@media (max-width: 768px) { .app-header__user-name { display: none; } }

/* ── Footer inner ─────────────────────────────────────────── */
.app-footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
  max-width: var(--content-max-w);
  margin: 0 auto;
  width: 100%;
}

/* ── Sidebar nav list & extras ────────────────────────────── */
.sidebar-nav__list {
  list-style: none;
  padding: var(--space-3);
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.sidebar-nav__badge {
  margin-inline-start: auto;
  min-width: 20px;
  height: 20px;
  border-radius: 9999px;
  background: var(--color-primary);
  color: #fff;
  font-size: var(--text-xs);
  font-weight: var(--fw-bold);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 5px;
}
.sidebar-nav__divider {
  height: 1px;
  background: var(--surface-border);
  margin: var(--space-2) var(--space-3);
}

/* ── Breadcrumb ───────────────────────────────────────────── */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: var(--text-sm);
  color: var(--text-muted);
}
.breadcrumb__item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--text-muted);
}
.breadcrumb__item + .breadcrumb__item::before {
  content: '/';
  color: var(--text-muted);
  opacity: .5;
}
.breadcrumb__item a {
  color: var(--text-muted);
}
.breadcrumb__item a:hover { color: var(--color-primary); }
.breadcrumb__item--active {
  color: var(--text-primary);
  font-weight: var(--fw-medium);
}

/* ── Tabs (alt naming: tab-item instead of tabs__item) ────── */
.tabs {
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--surface-border);
  overflow-x: auto;
  scrollbar-width: none;
}
.tabs::-webkit-scrollbar { display: none; }
.tab-item {
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-sm);
  font-weight: var(--fw-medium);
  color: var(--text-muted);
  cursor: pointer;
  border: none;
  background: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  white-space: nowrap;
  transition: color var(--transition-fast), border-color var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}
.tab-item:hover { color: var(--text-primary); }
.tab-item.active,
.tab-item--active,
.tab-item[aria-selected="true"] {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  font-weight: var(--fw-semi);
  background: rgba(0,105,186,.06);
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}
.tab-pane { display: none; }
.tab-pane.active,
.tab-pane--active { display: block; }

/* ── Section header subtitle ──────────────────────────────── */
.section-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}
.section-header__subtitle {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-top: var(--space-1);
}

/* ── Dropdown items ───────────────────────────────────────── */
.dropdown__item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  text-decoration: none;
  cursor: pointer;
  transition: background var(--transition-fast);
  width: 100%;
}
.dropdown__item:hover { background: var(--surface-hover); color: var(--text-primary); text-decoration: none; }
.dropdown__item--danger { color: var(--color-danger); }
.dropdown__item--danger:hover { background: var(--color-danger-light); color: var(--color-danger); }

/* ── Search overlay extras ────────────────────────────────── */
.search-overlay__inner {
  max-width: 640px;
  width: 100%;
  margin: 80px auto 0;
}
.search-overlay__bar {
  display: flex;
  align-items: center;
  background: var(--surface-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--surface-border);
  box-shadow: var(--shadow-lg);
  padding: 0 var(--space-4);
  overflow: hidden;
}
.search-overlay__icon {
  color: var(--text-muted);
  flex-shrink: 0;
}

/* ── Button extras ────────────────────────────────────────── */
.btn--icon {
  width: 36px;
  height: 36px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: relative;  /* establishes positioning context for .app-header__notif-badge */
  border-radius: var(--radius-md);
  flex-shrink: 0;
}
.btn--active,
.btn[aria-pressed="true"] {
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn--outline {
  background: transparent;
  border: 1px solid var(--surface-border);
  color: var(--text-secondary);
}
.btn--outline:hover { border-color: var(--color-primary); color: var(--color-primary); }
.btn--danger-outline {
  background: transparent;
  border: 1px solid var(--color-danger);
  color: var(--color-danger);
}
.btn--danger-outline:hover { background: var(--color-danger-light); }
.btn--sso {
  background: var(--surface-card);
  border: 1px solid var(--surface-border);
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  width: 100%;
  justify-content: center;
}
.btn--sso:hover { border-color: var(--color-primary); color: var(--color-primary); }
.btn-group {
  display: inline-flex;
  gap: 0;
}
.btn-group .btn { border-radius: 0; border-right-width: 0; }
.btn-group .btn:first-child { border-radius: var(--radius-md) 0 0 var(--radius-md); }
.btn-group .btn:last-child  { border-radius: 0 var(--radius-md) var(--radius-md) 0; border-right-width: 1px; }
[dir="rtl"] .btn-group .btn:not(:last-child) { border-left-width: 0; border-right-width: 1px; }
[dir="rtl"] .btn-group .btn:last-child { border-left-width: 1px; border-right-width: 0; }

/* ── Badge extras ─────────────────────────────────────────── */
.badge--light    { background: var(--surface-hover); color: var(--text-gray); }
.badge--secondary{ background: var(--surface-border); color: var(--text-secondary); }

/* ── Card hover ───────────────────────────────────────────── */
.card--hover {
  cursor: pointer;
  transition: box-shadow var(--transition-fast), transform var(--transition-fast);
}
.card--hover:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

/* ── Stretched-link (makes entire card clickable) ─────────── */
.card--link { position: relative; }
.stretched-link::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  border-radius: inherit;
}
.card--link .btn,
.card--link a:not(.stretched-link) { position: relative; z-index: 2; }

/* ── Chip remove button ───────────────────────────────────── */
.chip__remove {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  display: inline-flex;
  color: inherit;
  opacity: .6;
}
.chip__remove:hover { opacity: 1; }

/* ── Empty state (alt naming) ─────────────────────────────── */
.empty-state__subtitle {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-top: var(--space-2);
}

/* ── Modal extras ─────────────────────────────────────────── */
.modal__backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  z-index: 400;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
}
.modal__dialog { max-width: 520px; width: 100%; }
.modal__box {
  background: var(--surface-card);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.modal__success {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-10) var(--space-8);
  text-align: center;
}
.modal__success-icon {
  font-size: 48px;
  margin-bottom: var(--space-4);
}
.modal__success-text {
  font-size: var(--text-base);
  color: var(--text-muted);
  margin-top: var(--space-2);
}

/* ── Auth pages ───────────────────────────────────────────── */
.auth-card__heading {
  font-size: var(--text-2xl);
  font-weight: var(--fw-bold);
  text-align: center;
  margin-bottom: var(--space-2);
}
.auth-card__subheading {
  font-size: var(--text-sm);
  color: var(--text-muted);
  text-align: center;
  margin-bottom: var(--space-6);
}
.auth-card__footer {
  text-align: center;
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-top: var(--space-5);
}
.auth-links__sep { margin: 0 var(--space-2); opacity: .4; }
.auth-logo__mark { width: 48px; height: 48px; }
.auth-logo__text { font-size: var(--text-xl); font-weight: var(--fw-bold); }

/* ── Form extras ──────────────────────────────────────────── */
.form__input {
  display: block;
  width: 100%;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-md);
  font: inherit;
  font-size: var(--text-sm);
  color: var(--text-primary);
  background: var(--surface-card);
  transition: border-color var(--transition-fast);
}
.form__input:focus { outline: none; border-color: var(--color-primary); box-shadow: var(--focus-ring); }
.form__control--sm { padding: var(--space-1) var(--space-2); font-size: var(--text-sm); }
.form__group--full { grid-column: 1 / -1; }
.form__check-input { width: 16px; height: 16px; accent-color: var(--color-primary); cursor: pointer; }
.form__toggle-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--surface-border);
}
.form__toggle-row:last-child { border-bottom: none; }
.form__toggle-row__info { flex: 1; }
.form__toggle-row__label { font-weight: var(--fw-medium); font-size: var(--text-sm); }
.form__toggle-row__desc  { font-size: var(--text-xs); color: var(--text-muted); margin-top: 2px; }
.form__toggle { position: relative; width: 44px; height: 24px; flex-shrink: 0; cursor: pointer; }
.form__toggle-track {
  width: 44px; height: 24px;
  border-radius: 12px;
  background: var(--surface-border);
  transition: background var(--transition-fast);
  display: block;
}
.form__toggle input:checked ~ .form__toggle-track { background: var(--color-primary); }
.form__toggle-thumb {
  position: absolute;
  top: 3px; left: 3px;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 1px 3px rgba(0,0,0,.2);
  transition: transform var(--transition-fast);
  pointer-events: none;
}
.form__toggle input:checked ~ .form__toggle-thumb { transform: translateX(20px); }
/* RTL: flip toggle thumb */
[dir="rtl"] .form__toggle-thumb { left: auto; right: 3px; }
[dir="rtl"] .form__toggle input:checked ~ .form__toggle-thumb { transform: translateX(-20px); }
.form-field__error { font-size: var(--text-xs); color: var(--color-danger); margin-top: 4px; }
.form-field__input-wrap { position: relative; }
.form-row-remember__forgot { font-size: var(--text-sm); color: var(--color-primary); }

/* ── Sidebar info rows (profile/detail pages) ─────────────── */
.sidebar-info-row__key { font-size: var(--text-xs); color: var(--text-muted); text-transform: uppercase; letter-spacing: .05em; }
.sidebar-info-row__val { font-size: var(--text-sm); font-weight: var(--fw-medium); color: var(--text-primary); margin-top: 2px; }

/* ── Created / Modified audit bar (admin details) ───────────── */
.lastModified.lastModified-bar {
  margin-top: 24px;
  padding: 12px 20px;
  background: #fff !important;
  border: none !important;
  border-radius: 6px;
  font-size: 12px;
  line-height: 1.5;
  color: #5e6278;
  box-sizing: border-box;
}

.lastModified-bar__content {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0;
}

.lastModified-bar__item {
  display: inline;
}

.lastModified-bar__label,
.lastModified-bar__value {
  color: #5e6278;
  font-weight: 400;
}

.lastModified-bar__sep {
  color: #b5b5c3;
  margin: 0 12px;
  font-weight: 300;
  user-select: none;
}

.lastModified.lastModified-bar a {
  color: #5e6278 !important;
  font-size: 12px !important;
  font-weight: 400 !important;
  text-decoration: none;
}

.lastModified.lastModified-bar a:hover {
  color: #3f4254 !important;
  text-decoration: underline;
}

@media (max-width: 767px) {
  .lastModified-bar__sep {
    display: none;
  }

  .lastModified-bar__item {
    display: block;
    width: 100%;
    margin-bottom: 6px;
  }

  .lastModified-bar__item:last-child {
    margin-bottom: 0;
  }
}

/* ── Page gutters — match Create User (align with header content column) ── */
body[data-layout="horizontal"]:not(:has(.auth-page)) #main {
    width: 100%;
    max-width: var(--content-max-w);
    /*margin-inline: auto;*/
    margin: 15px auto;
    padding: 24px var(--content-pad) 80px;
    box-sizing: border-box;
    /*min-height: 750px;*/
}
body[data-layout="horizontal"]:not(:has(.auth-page)) #main.auth-In {
  background: var(--uaf-page-bg) !important;
  flex: 1 1 auto;
}

body[data-layout="horizontal"]:not(:has(.auth-page)) .row.page-header {
  width: 100%;
  max-width: var(--content-max-w);
  margin-inline: auto;
  padding-inline: var(--content-pad);
  box-sizing: border-box;
}

body[data-layout="horizontal"] .main-content .content {
  /* padding: 10px !important; */   /* This is comment out for text overlap on image Course/60573*/
  margin-top: 10px !important; /* margin-top: 10px !important;*/
}

@media (max-width: 991px) {
  body[data-layout="horizontal"]:not(:has(.auth-page)) #main,
  body[data-layout="horizontal"]:not(:has(.auth-page)) .row.page-header {
    padding-inline: var(--content-pad-sm);
  }
}

/* Laptop / 1366×768 — max-width must stay below zoomed viewport (1366 ÷ 1.1 ≈ 1241px)
   so the column stays centered at 100% and 110% browser zoom (screenshot 3 look). */
@media (min-width: 992px) and (max-width: 1366px) {
  body[data-layout="horizontal"]:not(:has(.auth-page)) #main,
  body[data-layout="horizontal"]:not(:has(.auth-page)) .row.page-header {
    max-width: 1200px;
    padding-inline: 40px;
  }
}

@media (min-width: 1367px) and (max-width: 1919px) {
  body[data-layout="horizontal"]:not(:has(.auth-page)) #main,
  body[data-layout="horizontal"]:not(:has(.auth-page)) .row.page-header {
    max-width: 1560px;
    padding-inline: 40px;
  }
}

@media (min-width: 1920px) {
  body[data-layout="horizontal"]:not(:has(.auth-page)) #main,
  body[data-layout="horizontal"]:not(:has(.auth-page)) .row.page-header {
    max-width: 1600px;
    padding-inline: 40px;
  }
}

@media (min-width: 2560px) {
  body[data-layout="horizontal"]:not(:has(.auth-page)) #main,
  body[data-layout="horizontal"]:not(:has(.auth-page)) .row.page-header {
    max-width: 1920px;
    padding-inline: 60px;
  }
}

#main:has(.vertical-tabs-info), #main:has(.content), #main:has(.class-profile-section) {
  /* background-color: var(--uaf-page-bg) !important; */
  padding-bottom: 5px !important;
}

/* Page header back — match student ce-back-link (plain arrow + label) */
.row.page-header .page-title-left .ce-back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin: 0;
  padding: 0;
  border: none;
  background: transparent;
  color: var(--text-secondary, #5c6b7a);
  font-size: 13px;
  font-weight: 500;
  line-height: 1.2;
  cursor: pointer;
  transition: color var(--transition, 150ms ease);
}

.row.page-header .page-title-left .ce-back-link:hover {
  color: var(--text-primary, #0f172a);
}

.row.page-header .page-title-left .ce-back-link svg {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
}

html[dir="rtl"] .row.page-header .page-title-left .ce-back-link svg,
html[lang="ar"] .row.page-header .page-title-left .ce-back-link svg {
  transform: scaleX(-1);
}