/* ================================================================
   RMS — Multi-School Result Management System
   Main CSS Design System
   ================================================================ */
/* Fonts preloaded in base.html head for performance */
/* ── CSS Custom Properties ───────────────────────────────────── */
:root {
  /* ── Brand Primary ── */
  --color-primary:         #2563EB;
  --color-primary-hover:   #1D4ED8;
  --color-primary-light:   #3B82F6;
  --color-primary-subtle:  #EFF6FF;
  --color-primary-glow:    rgba(37, 99, 235, 0.15);

  /* Legacy Color Aliases (for 100% backwards compatibility) */
  --color-gold:            #2563EB;
  --color-gold-light:      #3B82F6;
  --color-gold-dark:       #1D4ED8;
  --color-blue:            #2563EB;

  /* ── Accent & Semantic ── */
  --color-emerald:         #10B981;
  --color-emerald-dark:    #059669;
  --color-success:         #10B981;
  --color-success-subtle:  #ECFDF5;
  --color-red:             #EF4444;
  --color-red-dark:        #DC2626;
  --color-danger:          #EF4444;
  --color-danger-subtle:   #FEF2F2;
  --color-warning:         #F59E0B;
  --color-warning-subtle:  #FFFBEB;
  --color-purple:          #7C3AED;
  --color-indigo:          #4F46E5;
  --color-cyan:            #0891B2;

  /* ── Surfaces & Backgrounds ── */
  --color-bg:              #F8FAFC;
  --color-bg-light:        #FFFFFF;
  --color-bg-card:         #FFFFFF;
  --color-surface:         #FFFFFF;
  --color-surface-hover:   #F1F5F9;
  --color-sidebar:         #FFFFFF;
  --color-sidebar-hover:   rgba(37, 99, 235, 0.04);
  --color-sidebar-active:  rgba(37, 99, 235, 0.08);

  /* ── Typography ── */
  --color-text:            #0F172A;
  --color-text-primary:    #0F172A;
  --color-text-secondary:  #475569;
  --color-text-muted:      #475569;
  --color-text-dim:        #64748B;

  /* ── Borders & Inputs ── */
  --color-border:          #E2E8F0;
  --color-border-strong:   #CBD5E1;
  --color-input-bg:        #FFFFFF;

  /* ── Radii ── */
  --radius-xs:             4px;
  --radius-sm:             8px;
  --radius-md:             12px;
  --radius-lg:             16px;
  --radius-xl:             24px;
  --radius-pill:           9999px;

  /* ── Elevation Shadows ── */
  --shadow-xs:             0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow-sm:             0 2px 6px rgba(15, 23, 42, 0.04);
  --shadow-md:             0 8px 24px rgba(15, 23, 42, 0.06);
  --shadow-lg:             0 16px 40px rgba(15, 23, 42, 0.08);
  --shadow-glow:           0 0 20px rgba(37, 99, 235, 0.12);

  --sidebar-width:         260px;
  --topbar-height:         64px;
  --transition:            all 0.2s cubic-bezier(0.2, 0.8, 0.2, 1);
}

[data-theme="dark"] {
  /* ── Brand Primary ── */
  --color-primary:         #3B82F6;
  --color-primary-hover:   #60A5FA;
  --color-primary-light:   #93C5FD;
  --color-primary-subtle:  rgba(37, 99, 235, 0.18);
  --color-primary-glow:    rgba(59, 130, 246, 0.25);

  --color-gold:            #3B82F6;
  --color-gold-light:      #60A5FA;
  --color-gold-dark:       #2563EB;
  --color-blue:            #3B82F6;

  /* ── Accent & Semantic ── */
  --color-emerald:         #10B981;
  --color-emerald-dark:    #059669;
  --color-success:         #10B981;
  --color-success-subtle:  rgba(16, 185, 129, 0.15);
  --color-red:             #F87171;
  --color-red-dark:        #EF4444;
  --color-danger:          #EF4444;
  --color-danger-subtle:   rgba(239, 68, 68, 0.15);
  --color-warning:         #F59E0B;
  --color-warning-subtle:  rgba(245, 158, 11, 0.15);
  --color-purple:          #A78BFA;
  --color-indigo:          #818CF8;
  --color-cyan:            #22D3EE;

  /* ── Surfaces & Backgrounds ── */
  --color-bg:              #0B1329;
  --color-bg-light:        #131F37;
  --color-bg-card:         #131F37;
  --color-surface:         #131F37;
  --color-surface-hover:   #1E2C4F;
  --color-sidebar:         #131F37;
  --color-sidebar-hover:   rgba(255, 255, 255, 0.05);
  --color-sidebar-active:  rgba(255, 255, 255, 0.1);

  /* ── Typography ── */
  --color-text:            #F8FAFC;
  --color-text-primary:    #F8FAFC;
  --color-text-secondary:  #CBD5E1;
  --color-text-muted:      #94A3B8;
  --color-text-dim:        #64748B;

  /* ── Borders & Inputs ── */
  --color-border:          #223259;
  --color-border-strong:   #2F4478;
  --color-input-bg:        #0E172E;

  /* ── Elevation Shadows ── */
  --shadow-xs:             0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-sm:             0 2px 6px rgba(0, 0, 0, 0.35);
  --shadow-md:             0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg:             0 16px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow:           0 0 20px rgba(59, 130, 246, 0.2);
}

@media screen {
  /* Backgrounds */
  [data-theme="dark"] .bg-white,
  [data-theme="dark"] .bg-light,
  [data-theme="dark"] .bg-light-subtle,
  [data-theme="dark"] .bg-dark-subtle,
  [data-theme="dark"] .bg-secondary {
    background-color: var(--color-bg-card) !important;
    color: var(--color-text) !important;
  }

  /* Inline Style Overrides globally (excluding specific colors used in marksheet) */
  [data-theme="dark"] [style*="background: #ffffff"],
  [data-theme="dark"] [style*="background:#ffffff"],
  [data-theme="dark"] [style*="background: #fff"],
  [data-theme="dark"] [style*="background:#fff"],
  [data-theme="dark"] [style*="background-color: #ffffff"],
  [data-theme="dark"] [style*="background-color: #fff"] {
    background-color: var(--color-bg-card) !important;
    color: var(--color-text) !important;
  }

  /* Structural Components */
  [data-theme="dark"] .card {
    background-color: var(--color-bg-card) !important;
    color: var(--color-text);
    border-color: var(--color-border) !important;
  }

  [data-theme="dark"] .card-header,
  [data-theme="dark"] .card-footer {
    background-color: rgba(0,0,0,0.2) !important;
    border-color: var(--color-border) !important;
  }

  [data-theme="dark"] .table {
    --bs-table-bg: transparent;
    --bs-table-color: var(--color-text);
    --bs-table-border-color: var(--color-border);
  }

  [data-theme="dark"] .table-light th,
  [data-theme="dark"] .table-light td,
  [data-theme="dark"] .table thead th {
    background-color: rgba(255,255,255,0.05) !important;
    color: var(--color-text) !important;
    border-color: var(--color-border) !important;
  }
  
  [data-theme="dark"] .table-hover tbody tr:hover {
    background-color: rgba(255,255,255,0.05) !important;
    color: var(--color-text) !important;
  }

  /* Form Elements */
  [data-theme="dark"] .form-control,
  [data-theme="dark"] .form-select {
    background-color: var(--color-input-bg) !important;
    border-color: var(--color-border) !important;
    color: var(--color-text) !important;
  }

  [data-theme="dark"] .form-control:focus,
  [data-theme="dark"] .form-select:focus {
    border-color: var(--color-gold) !important;
    box-shadow: 0 0 0 0.25rem rgba(59, 130, 246, 0.25) !important;
  }

  /* Buttons & Badges that are usually light */
  [data-theme="dark"] .btn-light,
  [data-theme="dark"] .btn-white {
    background-color: var(--color-bg) !important;
    color: var(--color-text) !important;
    border-color: var(--color-border) !important;
  }
  
  [data-theme="dark"] .text-dark,
  [data-theme="dark"] .text-body {
    color: var(--color-text) !important;
  }

  [data-theme="dark"] .text-muted {
    color: var(--color-text-muted) !important;
  }

  /* Modals */
  [data-theme="dark"] .modal-content {
    background-color: var(--color-bg-card) !important;
    border-color: var(--color-border) !important;
  }
  
  [data-theme="dark"] .modal-header,
  [data-theme="dark"] .modal-footer {
    border-color: var(--color-border) !important;
  }

  /* Dropdowns */
  [data-theme="dark"] .dropdown-menu {
    background-color: var(--color-bg-card) !important;
    border-color: var(--color-border) !important;
  }
  
  [data-theme="dark"] .dropdown-item {
    color: var(--color-text) !important;
  }
  
  [data-theme="dark"] .dropdown-item:hover {
    background-color: rgba(255,255,255,0.05) !important;
  }

  /* Select2 Dark Mode Harmonization */
  [data-theme="dark"] .select2-container--bootstrap-5 .select2-selection {
    background-color: var(--color-input-bg) !important;
    border-color: var(--color-border) !important;
    color: var(--color-text) !important;
  }
  [data-theme="dark"] .select2-container--bootstrap-5 .select2-selection--single .select2-selection__rendered {
    color: var(--color-text) !important;
  }
  [data-theme="dark"] .select2-container--bootstrap-5 .select2-dropdown {
    background-color: var(--color-surface) !important;
    border-color: var(--color-border) !important;
    color: var(--color-text) !important;
  }
  [data-theme="dark"] .select2-container--bootstrap-5 .select2-dropdown .select2-search .select2-search__field {
    background-color: var(--color-input-bg) !important;
    border-color: var(--color-border) !important;
    color: var(--color-text) !important;
  }
  [data-theme="dark"] .select2-container--bootstrap-5 .select2-results__option {
    color: var(--color-text) !important;
  }
  [data-theme="dark"] .select2-container--bootstrap-5 .select2-results__option--highlighted[aria-selected] {
    background-color: var(--color-primary) !important;
    color: #ffffff !important;
  }
  [data-theme="dark"] .select2-container--bootstrap-5 .select2-results__option[aria-selected="true"] {
    background-color: rgba(37, 99, 235, 0.25) !important;
    color: var(--color-primary-light) !important;
  }
}

/* ── Base Reset ──────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 14px; scroll-behavior: smooth; }

body {
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

body::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    radial-gradient(circle at 50% -20%, rgba(37, 99, 235, 0.03) 0%, transparent 60%),
    radial-gradient(circle at 10% 80%, rgba(59, 130, 246, 0.01) 0%, transparent 40%);
  pointer-events: none;
  z-index: -1;
}

.background-grid {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: linear-gradient(rgba(15, 23, 42, 0.006) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(15, 23, 42, 0.006) 1px, transparent 1px);
  background-size: 45px 45px;
  pointer-events: none;
  z-index: -1;
}

h1, h2, h3, h4, h5, h6, .brand-name, .topbar-title, .page-title, .logo-text, .nav-text {
  font-family: 'Outfit', sans-serif !important;
}

/* ── Scrollbar ───────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--color-bg); }
::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-text-dim); }

/* ── App Layout ──────────────────────────────────────────────── */
.app-wrapper { display: flex; min-height: 100vh; }

/* ── Sidebar ─────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-width);
  background: var(--color-sidebar);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0;
  height: 100vh;
  z-index: 1050;
  transition: transform 0.3s ease, width 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  overflow-y: auto;
}

.btn-sidebar-close {
  display: none;
}

.sidebar-header {
  display: flex !important;
  flex-direction: row !important;
  align-items: center !important;
  justify-content: space-between !important;
  flex-wrap: nowrap !important;
  gap: 8px;
  padding: 14px 14px;
  min-height: 64px;
  position: relative;
  box-sizing: border-box;
  width: 100%;
}

.sidebar-toggle-btn {
  width: 36px;
  height: 36px;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 1.15rem;
  cursor: pointer;
  flex-shrink: 0 !important;
  transition: var(--transition);
}

.sidebar-toggle-btn:hover {
  background: var(--color-sidebar-hover);
  color: var(--color-gold);
  border-color: var(--color-gold);
}

[data-theme="dark"] .sidebar-toggle-btn {
  border-color: var(--color-border);
  color: var(--color-text);
}

[data-theme="dark"] .sidebar-toggle-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--color-gold);
  color: var(--color-gold-light);
}

.sidebar-logo {
  display: flex !important;
  flex-direction: row !important;
  align-items: center !important;
  flex-wrap: nowrap !important;
  gap: 10px;
  padding: 0;
  text-decoration: none;
  min-width: 0;
  flex: 1 1 auto;
  overflow: hidden;
}

.sidebar-logo .logo-icon {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-dark));
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 17px; font-weight: 800;
  color: var(--color-bg);
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(37,99,235,0.15);
}

.sidebar-logo .logo-text {
  min-width: 0;
  overflow: hidden;
  white-space: nowrap;
  flex: 1 1 auto;
}

.sidebar-logo .logo-text .brand-name {
  font-family: 'Outfit', sans-serif;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-logo .logo-text .brand-sub {
  font-size: 0.68rem;
  color: var(--color-text-muted);
  line-height: 1;
  margin-top: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-school {
  padding: 10px 16px;
  margin: 0 12px 6px 12px;
  background: rgba(37,99,235,0.05);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.sidebar-school .school-name {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-gold);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-school .session-badge {
  font-size: 0.68rem;
  color: var(--color-text-muted);
  margin-top: 2px;
}

.sidebar-nav { flex: 1; padding: 8px 10px; overflow-y: auto; }

.nav-section-title {
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--color-text-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 14px 12px 6px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  margin-bottom: 3px;
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 500;
  border-radius: 24px;
  transition: background-color 0.15s ease, color 0.15s ease;
  position: relative;
}

.nav-item:hover {
  color: var(--color-text);
  background: var(--color-sidebar-hover);
}

.nav-item.active {
  color: var(--color-gold);
  background: var(--color-sidebar-active);
  font-weight: 600;
}

.nav-item.active::before {
  display: none;
}

.nav-item .nav-icon { width: 18px; height: 18px; flex-shrink: 0; opacity: 0.85; }
.nav-item.active .nav-icon { opacity: 1; }

.sidebar-footer {
  padding: 12px 16px;
  border-top: 1px solid var(--color-border);
  transition: padding 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Collapsible Sidebar (Desktop View overrides) ────────────── */
@media (min-width: 768px) {
  .sidebar-collapsed .sidebar {
    width: 68px;
    overflow: visible;
  }

  .sidebar-collapsed .sidebar-nav {
    overflow: visible;
    padding: 6px 0;
  }

  .sidebar-collapsed .main-content {
    margin-left: 68px;
  }

  /* Header in Collapsed Mode: Collapse Button at top, Logo Icon directly below it */
  .sidebar-collapsed .sidebar-header {
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 0 12px 0;
    border-bottom: 1px solid var(--color-border);
  }

  .sidebar-collapsed .sidebar-toggle-btn {
    order: 1;
    margin: 0 auto;
    background: rgba(0, 0, 0, 0.04);
  }

  .sidebar-collapsed .sidebar-logo {
    order: 2;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto;
    padding: 0;
  }

  .sidebar-collapsed .sidebar-logo .logo-text {
    display: none;
  }

  .sidebar-collapsed .sidebar-logo .logo-icon {
    width: 36px;
    height: 36px;
    margin: 0 auto;
  }

  [data-theme="dark"] .sidebar-collapsed .sidebar-toggle-btn {
    background: rgba(255, 255, 255, 0.06);
  }

  .sidebar-collapsed .sidebar-toggle-btn:hover {
    background: rgba(0, 0, 0, 0.08);
  }

  [data-theme="dark"] .sidebar-collapsed .sidebar-toggle-btn:hover {
    background: rgba(255, 255, 255, 0.12);
  }

  .sidebar-collapsed .sidebar-toggle-btn .toggle-icon-collapse {
    display: none;
  }

  .sidebar-collapsed .sidebar-toggle-btn .toggle-icon-expand {
    display: block;
  }

  .sidebar-collapsed .sidebar-header .sidebar-toggle-tooltip {
    top: 50%;
    left: 56px;
    right: auto;
    transform: translateY(-50%) translateX(6px);
  }

  .sidebar-collapsed .sidebar-toggle-btn:hover .sidebar-toggle-tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateY(-50%) translateX(0);
  }

  /* Show clean micro-dividers for sections when collapsed */
  .sidebar-collapsed .sidebar-school {
    display: none;
  }
  .sidebar-collapsed .nav-section-title {
    display: block;
    height: 1px;
    background: var(--color-border);
    margin: 8px 12px;
    padding: 0;
    font-size: 0;
    overflow: hidden;
  }

  /* Collapsed Footer items padding */
  .sidebar-collapsed .sidebar-footer {
    padding: 12px 0;
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  /* Collapsed Navigation items styled as small centered circular buttons */
  .sidebar-collapsed .nav-item {
    width: 42px;
    height: 42px;
    margin: 4px auto;
    border-radius: var(--radius-md);
    justify-content: center;
    padding: 0;
    overflow: visible;
    white-space: nowrap;
    transition: background-color 0.2s ease, color 0.2s ease, transform 0.15s ease;
    position: relative;
  }

  .sidebar-collapsed .nav-item:hover {
    transform: translateX(2px);
  }

  .sidebar-collapsed .nav-item .nav-icon {
    margin: 0;
    font-size: 1.15rem;
  }

  /* Text label styled as a sleek floating popover */
  .sidebar-collapsed .nav-item .nav-text {
    position: absolute;
    left: 52px;
    top: 50%;
    transform: translateY(-50%) translateX(6px);
    background: var(--color-text-primary);
    color: var(--color-surface);
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 600;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.15s ease, transform 0.15s ease, visibility 0.15s ease;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
    z-index: 1000;
  }

  .sidebar-collapsed .nav-item .nav-text::before {
    display: none;
  }

  .sidebar-collapsed .nav-item:hover {
    z-index: 999;
    background: var(--color-sidebar-hover);
  }

  .sidebar-collapsed .nav-item:hover .nav-text {
    opacity: 1;
    visibility: visible;
    transform: translateY(-50%) translateX(0);
  }
}

/* ── Main Content Area ───────────────────────────────────────── */
.main-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-width: 0;
  transition: margin-left 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Top Bar ─────────────────────────────────────────────────── */
.topbar {
  height: var(--topbar-height);
  background: var(--color-bg-light);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 50;
}

.topbar-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text);
}

.topbar-actions { display: flex; align-items: center; gap: 16px; }

.topbar-btn {
  width: 36px; height: 36px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: var(--transition);
}
.topbar-btn:hover { color: var(--color-text); border-color: var(--color-gold); }

.user-menu {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  padding: 6px 12px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  transition: var(--transition);
  text-decoration: none;
  color: var(--color-text);
}
.user-menu:hover { border-color: var(--color-gold); color: var(--color-text); }

.user-avatar {
  width: 32px; height: 32px;
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-dark));
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.75rem; font-weight: 700;
  color: var(--color-bg);
}

.user-name { font-size: 0.82rem; font-weight: 600; }
.user-role { font-size: 0.68rem; color: var(--color-text-muted); }

/* ── Page Content ────────────────────────────────────────────── */
.page-content { flex: 1; padding: 24px; min-width: 0; }

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}

.page-title {
  font-family: 'Outfit', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
}

.page-subtitle {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  margin-top: 2px;
}

/* ── Cards ───────────────────────────────────────────────────── */
.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  transition: var(--transition);
}
.card:hover { border-color: rgba(37,99,235,0.2); box-shadow: var(--shadow-glow); }

.card-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.card-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
}

/* ── KPI / Stat Cards ────────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-color, var(--color-gold)), transparent);
}

.stat-card:hover {
  border-color: var(--accent-color, var(--color-gold));
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.stat-card.gold { --accent-color: var(--color-gold); }
.stat-card.emerald { --accent-color: var(--color-emerald); }
.stat-card.blue { --accent-color: var(--color-blue); }
.stat-card.purple { --accent-color: var(--color-purple); }
.stat-card.cyan { --accent-color: var(--color-cyan); }
.stat-card.red { --accent-color: var(--color-red); }

.stat-icon {
  width: 44px; height: 44px;
  background: rgba(255,255,255,0.05);
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  margin-bottom: 12px;
  color: var(--accent-color, var(--color-gold));
}

.stat-value {
  font-family: 'Outfit', sans-serif;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 4px;
  font-weight: 500;
}

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.84rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease;
  text-decoration: none;
  line-height: 1.25;
  white-space: nowrap;
  position: relative;
  user-select: none;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: scale(0.98);
}

.btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.btn:disabled, .btn[disabled] {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
  transform: none !important;
  box-shadow: none !important;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-hover));
  color: #FFFFFF !important;
  border-color: transparent;
  box-shadow: var(--shadow-xs);
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
  color: #FFFFFF !important;
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text-primary) !important;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-xs);
}
.btn-secondary:hover { 
  border-color: var(--color-border-strong);
  background: var(--color-surface-hover);
  color: var(--color-primary) !important;
  box-shadow: var(--shadow-sm);
}

.btn-outline-primary {
  background: transparent;
  color: var(--color-primary) !important;
  border: 1px solid var(--color-primary);
}
.btn-outline-primary:hover {
  background: var(--color-primary);
  color: #FFFFFF !important;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
  border-color: transparent;
}
.btn-ghost:hover {
  background: var(--color-surface-hover);
  color: var(--color-text-primary);
}

.btn-success {
  background: linear-gradient(135deg, var(--color-success), var(--color-emerald-dark));
  color: #FFFFFF !important;
  box-shadow: var(--shadow-xs);
}
.btn-success:hover { 
  background: linear-gradient(135deg, #34D399, var(--color-success));
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.35);
}

.btn-danger {
  background: linear-gradient(135deg, var(--color-danger), var(--color-red-dark));
  color: #FFFFFF !important;
  box-shadow: var(--shadow-xs);
}
.btn-danger:hover { 
  background: linear-gradient(135deg, #F87171, var(--color-danger));
  box-shadow: 0 4px 14px rgba(239, 68, 68, 0.35);
}

.btn-info {
  background: linear-gradient(135deg, #38BDF8, #0284C7);
  color: #FFFFFF !important;
  box-shadow: var(--shadow-xs);
}
.btn-info:hover { 
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.35);
}

.btn-sm { 
  padding: 6px 12px; 
  font-size: 0.76rem; 
  border-radius: var(--radius-sm);
}
.btn-lg { 
  padding: 12px 24px; 
  font-size: 0.95rem; 
  border-radius: var(--radius-md);
}

.btn-icon {
  width: 36px; 
  height: 36px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  flex-shrink: 0;
}

/* ── Tables ──────────────────────────────────────────────────── */
.table-container {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.table-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-border);
  flex-wrap: wrap;
  gap: 12px;
}

.table-responsive { overflow-x: auto; }

table.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
}

table.data-table thead th {
  background: var(--color-bg);
  color: var(--color-text-muted);
  font-weight: 600;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

table.data-table tbody tr {
  border-bottom: 1px solid rgba(51,65,85,0.4);
  transition: var(--transition);
}

table.data-table tbody tr:hover {
  background: rgba(37,99,235,0.04);
}

table.data-table tbody td {
  padding: 10px 14px;
  color: var(--color-text);
  vertical-align: middle;
}

/* ── Ledger Table ────────────────────────────────────────────── */
.ledger-wrap {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.ledger-wrap::-webkit-scrollbar {
  height: 10px;
  width: 10px;
}
.ledger-wrap::-webkit-scrollbar-track {
  background: var(--color-bg);
  border-radius: 8px;
}
.ledger-wrap::-webkit-scrollbar-thumb {
  background: var(--color-text-dim);
  border-radius: 8px;
  border: 2px solid var(--color-bg);
}
.ledger-wrap::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted);
}

table.ledger-table {
  border-collapse: collapse;
  font-size: 0.72rem;
  min-width: max-content;
}

table.ledger-table th, table.ledger-table td {
  border: 1px solid var(--color-border);
  padding: 5px 8px;
  text-align: center;
  white-space: nowrap;
}

table.ledger-table thead {
  position: sticky;
  top: 0;
  z-index: 20;
}

table.ledger-table thead th {
  background: var(--color-bg);
  color: var(--color-text-muted);
  font-weight: 600;
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

table.ledger-table thead th.subject-header {
  background: var(--color-sidebar-active);
  color: var(--color-gold);
}

table.ledger-table tbody tr:nth-child(even) td { background-color: #f8fafc; }
table.ledger-table tbody tr:nth-child(odd) td { background-color: #ffffff; }
table.ledger-table tbody tr:hover td { background-color: #eef4ff; }

table.ledger-table .sticky-col-1 { position: sticky; left: 0; z-index: 10; min-width: 40px; max-width: 40px; }
table.ledger-table .sticky-col-2 { position: sticky; left: 40px; z-index: 10; min-width: 80px; max-width: 80px; }
table.ledger-table .sticky-col-3 { position: sticky; left: 120px; z-index: 10; min-width: 85px; max-width: 85px; }
table.ledger-table .sticky-col-4 { position: sticky; left: 205px; z-index: 10; min-width: 180px; max-width: 180px; border-right: 2px solid var(--color-gold) !important; }

table.ledger-table thead .sticky-col-1,
table.ledger-table thead .sticky-col-2,
table.ledger-table thead .sticky-col-3,
table.ledger-table thead .sticky-col-4 {
  z-index: 30;
  background-color: var(--color-bg);
}

table.ledger-table td.pass { color: var(--color-emerald); font-weight: 600; }
table.ledger-table td.fail { color: var(--color-red); font-weight: 600; }

/* ── Forms & Inputs ──────────────────────────────────────────── */
.form-group { margin-bottom: 16px; }

.form-label {
  display: block;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.form-control {
  width: 100%;
  background: var(--color-input-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 9px 12px;
  font-size: 0.85rem;
  color: var(--color-text);
  font-family: 'Inter', sans-serif;
  transition: var(--transition);
  outline: none;
}

.form-control:focus {
  border-color: var(--color-gold);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}

.form-control::placeholder { color: var(--color-text-dim); }

select.form-control { cursor: pointer; }
select.form-control option { background: var(--color-bg-light); }

.form-check {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}

.form-check input[type="checkbox"] {
  width: 16px; height: 16px;
  accent-color: var(--color-gold);
  cursor: pointer;
}

.form-check-label { font-size: 0.85rem; color: var(--color-text); }

/* ── Badges ──────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 100px;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.badge-gold { background: rgba(37,99,235,0.1); color: var(--color-gold); }
.badge-green { background: rgba(16,185,129,0.15); color: var(--color-emerald); }
.badge-red { background: rgba(239,68,68,0.15); color: var(--color-red); }
.badge-blue { background: rgba(59,130,246,0.15); color: var(--color-blue); }
.badge-gray { background: rgba(148,163,184,0.15); color: var(--color-text-muted); }
.badge-purple { background: rgba(139,92,246,0.15); color: var(--color-purple); }

/* ── Alerts & Messages ───────────────────────────────────────── */
.alert {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  border: 1px solid;
  font-size: 0.82rem;
  margin-bottom: 16px;
  animation: slideIn 0.3s ease;
}

@keyframes slideIn {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

.alert-success { background: rgba(16,185,129,0.08); border-color: rgba(16,185,129,0.3); color: var(--color-emerald); }
.alert-error, .alert-danger { background: rgba(239,68,68,0.08); border-color: rgba(239,68,68,0.3); color: var(--color-red); }
.alert-warning { background: rgba(245,158,11,0.08); border-color: rgba(245,158,11,0.3); color: var(--color-gold); }
.alert-info { background: rgba(59,130,246,0.08); border-color: rgba(59,130,246,0.3); color: var(--color-blue); }

/* ── Modals ──────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(4px);
  z-index: 200;
  display: flex; align-items: center; justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}
.modal-overlay.active { opacity: 1; visibility: visible; }

.rms-modal {
  background: var(--color-bg-light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 24px;
  width: min(90vw, 520px);
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.95);
  transition: transform 0.2s ease;
  box-shadow: var(--shadow-lg);
}
.modal-overlay.active .rms-modal { transform: scale(1); }

.rms-modal-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.rms-modal-title { font-size: 1.05rem; font-weight: 700; color: var(--color-text); }
.rms-modal-close { color: var(--color-text-muted); cursor: pointer; font-size: 20px; background: none; border: none; }
.rms-modal-close:hover { color: var(--color-text); }

/* ── Mark Entry Table ────────────────────────────────────────── */
.marks-entry-table { font-size: 0.78rem; }
.marks-entry-table th { background: var(--color-bg); padding: 8px; font-size: 0.68rem; text-transform: uppercase; }
.marks-entry-table td { padding: 4px 6px; }

.mark-input {
  width: 64px;
  padding: 4px 6px;
  background: var(--color-input-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-size: 0.8rem;
  text-align: center;
  transition: var(--transition);
  outline: none;
}
.mark-input:focus { border-color: var(--color-gold); }
.mark-input.error { border-color: var(--color-red); background: rgba(239,68,68,0.05); }
.mark-input.saved { border-color: var(--color-emerald); }

.special-select {
  padding: 4px 6px;
  background: var(--color-input-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-size: 0.75rem;
  outline: none;
}
.special-select:focus { border-color: var(--color-gold); }

.auto-save-indicator {
  font-size: 0.68rem;
  color: var(--color-emerald);
  display: none;
}
.auto-save-indicator.visible { display: inline-flex; align-items: center; gap: 4px; }

/* ── Marksheet Preview ───────────────────────────────────────── */
.marksheet-container {
  background: white;
  color: #1a1a1a;
  max-width: 800px;
  margin: 0 auto;
  padding: 32px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.marksheet-header {
  text-align: center;
  border-bottom: 3px double #0F172A;
  padding-bottom: 16px;
  margin-bottom: 20px;
}

.marksheet-school-name { font-size: 1.4rem; font-weight: 800; color: #0F172A; }
.marksheet-address { font-size: 0.8rem; color: #64748B; }
.marksheet-exam-title {
  background: #0F172A;
  color: white;
  padding: 8px 24px;
  border-radius: 100px;
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  margin: 12px 0;
}

.marksheet-student-info {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 16px;
  background: #F8FAFC;
  padding: 16px;
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  font-size: 0.82rem;
}
.marksheet-student-info strong { color: #0F172A; }

.marksheet-table { width: 100%; border-collapse: collapse; font-size: 0.78rem; margin-bottom: 16px; }
.marksheet-table th { background: #0F172A; color: white; padding: 8px 10px; text-align: center; }
.marksheet-table td { padding: 7px 10px; border: 1px solid #E2E8F0; text-align: center; }
.marksheet-table tr:nth-child(even) td { background: #F8FAFC; }
.marksheet-table .subject-name { text-align: left; font-weight: 600; }

.result-summary-box {
  background: #0F172A;
  color: white;
  border-radius: var(--radius-lg);
  padding: 16px 24px;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  text-align: center;
  gap: 8px;
  margin-bottom: 20px;
}
.result-summary-box .sum-label { font-size: 0.65rem; color: #94A3B8; text-transform: uppercase; }
.result-summary-box .sum-value { font-size: 1.2rem; font-weight: 700; color: #F59E0B; }
.result-summary-box .pass-value { color: #10B981; }
.result-summary-box .fail-value { color: #EF4444; }

/* ── Login Page ──────────────────────────────────────────────── */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg);
  background-image: radial-gradient(circle at 20% 50%, rgba(245,158,11,0.06) 0%, transparent 50%),
                    radial-gradient(circle at 80% 50%, rgba(16,185,129,0.04) 0%, transparent 50%);
}

.login-card {
  background: var(--color-bg-light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 40px;
  width: min(90vw, 420px);
  box-shadow: var(--shadow-lg);
}

.login-logo {
  display: flex; align-items: center; justify-content: center;
  gap: 12px;
  margin-bottom: 32px;
}

.login-logo .logo-icon {
  width: 52px; height: 52px;
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-dark));
  border-radius: var(--radius-lg);
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; font-weight: 900;
  color: var(--color-bg);
  box-shadow: 0 8px 24px rgba(245,158,11,0.4);
}

.login-title {
  font-family: 'Outfit', sans-serif;
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-text);
  text-align: center;
  margin-bottom: 4px;
}

.login-subtitle { text-align: center; font-size: 0.8rem; color: var(--color-text-muted); margin-bottom: 28px; }

/* ── Tabs ────────────────────────────────────────────────────── */
.tabs {
  display: flex;
  gap: 4px;
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  padding: 4px;
  margin-bottom: 20px;
  border: 1px solid var(--color-border);
}

.tab-btn {
  flex: 1;
  padding: 7px 14px;
  border-radius: calc(var(--radius-lg) - 4px);
  border: none;
  background: transparent;
  color: var(--color-text-muted);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}
.tab-btn.active {
  background: var(--color-bg-light);
  color: var(--color-gold);
  box-shadow: var(--shadow-sm);
}

/* ── Progress bars ───────────────────────────────────────────── */
.progress-bar {
  height: 6px;
  background: var(--color-border);
  border-radius: 3px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--color-gold), var(--color-emerald));
  transition: width 0.8s ease;
}

/* ── Workflow Status ─────────────────────────────────────────── */
.workflow-steps {
  display: flex;
  align-items: center;
  gap: 0;
  margin-bottom: 24px;
}
.workflow-step {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  position: relative;
}
.workflow-step::after {
  content: '';
  position: absolute;
  top: 16px;
  left: 50%;
  right: -50%;
  height: 2px;
  background: var(--color-border);
}
.workflow-step:last-child::after { display: none; }
.workflow-step.done::after { background: var(--color-gold); }

.workflow-dot {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--color-border);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.72rem; font-weight: 700;
  color: var(--color-text-muted);
  position: relative; z-index: 1;
}
.workflow-dot.done { background: var(--color-gold); color: var(--color-bg); }
.workflow-dot.active { background: var(--color-blue); color: white; }

.workflow-label { font-size: 0.65rem; color: var(--color-text-muted); }
.workflow-step.done .workflow-label { color: var(--color-gold); }
.workflow-step.active .workflow-label { color: var(--color-blue); }

/* ── Upload Zone ─────────────────────────────────────────────── */
.upload-zone {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
}
.upload-zone:hover, .upload-zone.dragover {
  border-color: var(--color-gold);
  background: rgba(37,99,235,0.04);
}
.upload-zone .upload-icon { font-size: 40px; margin-bottom: 12px; }
.upload-zone p { font-size: 0.85rem; color: var(--color-text-muted); }
.upload-zone strong { color: var(--color-gold); }

/* ── AI Analysis Box ─────────────────────────────────────────── */
.ai-box {
  background: linear-gradient(135deg, rgba(139,92,246,0.08), rgba(59,130,246,0.08));
  border: 1px solid rgba(139,92,246,0.3);
  border-radius: var(--radius-lg);
  padding: 20px;
}
.ai-box-header {
  display: flex; align-items: center; gap: 8px;
  margin-bottom: 12px;
  color: var(--color-purple);
  font-weight: 700;
  font-size: 0.9rem;
}
.ai-content { font-size: 0.85rem; color: var(--color-text); line-height: 1.7; white-space: pre-wrap; }

/* ── Charts ──────────────────────────────────────────────────── */
.chart-container { position: relative; height: 240px; }

/* ── Empty State ─────────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 60px 20px;
}
.empty-state .empty-icon { font-size: 48px; margin-bottom: 16px; opacity: 0.4; }
.empty-state p { color: var(--color-text-muted); font-size: 0.85rem; }

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); box-shadow: 4px 0 25px rgba(0,0,0,0.25); }
  .main-content { margin-left: 0; width: 100%; overflow-x: clip; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .td-kpi-row { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .teacher-kpi-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .result-summary-box { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .page-header { flex-direction: column; align-items: flex-start; gap: 10px; }
  .table-toolbar { flex-direction: column; align-items: flex-start; }

  .btn-sidebar-close {
    display: flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    top: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-muted);
    cursor: pointer;
    z-index: 110;
    transition: var(--transition);
  }
  .btn-sidebar-close:hover {
    color: var(--color-text);
    border-color: var(--color-gold);
  }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .stat-card { padding: 12px 10px; }
  .stat-card .stat-value { font-size: 1.25rem; }
  .stat-card .stat-label { font-size: 0.72rem; }
  .td-kpi-row { grid-template-columns: 1fr; }
  .teacher-kpi-grid { grid-template-columns: 1fr; }
  .result-summary-box { grid-template-columns: 1fr; }
}

/* ── Print Styles ────────────────────────────────────────────── */
@media print {
  .sidebar, .topbar, .page-header .btn-group, .no-print { display: none !important; }
  .main-content { margin-left: 0; }
  .marksheet-container { box-shadow: none; }
  body { background: white; color: black; }
  .table-container { border: none; }
}

/* ── Animations ──────────────────────────────────────────────── */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}
.loading { animation: pulse 1.5s ease infinite; }

@keyframes spin {
  to { transform: rotate(360deg); }
}
.spinner { animation: spin 0.8s linear infinite; display: inline-block; }

.fade-in { animation: slideIn 0.3s ease; }

/* ── Tooltip ─────────────────────────────────────────────────── */
[data-tooltip] { position: relative; }
[data-tooltip]:hover::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-bg);
  color: var(--color-text);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.72rem;
  white-space: nowrap;
  border: 1px solid var(--color-border);
  z-index: 999;
}

/* ── Toast Notifications ─────────────────────────────────────────── */
#toastContainer {
  position: fixed;
  top: 24px;
  right: 24px;
  z-index: 99999;
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 380px;
  width: calc(100% - 48px);
  pointer-events: none;
}

.rms-toast {
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(226, 232, 240, 0.8);
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 16px -6px rgba(0, 0, 0, 0.05);
  color: var(--color-text);
  font-size: 0.88rem;
  font-weight: 500;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease, border-color 0.3s;
  animation: toastSlideIn 0.35s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  position: relative;
  overflow: hidden;
}

[data-theme="dark"] .rms-toast {
  background: rgba(30, 41, 59, 0.9);
  border-color: rgba(51, 65, 85, 0.8);
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.4), 0 8px 16px -6px rgba(0, 0, 0, 0.2);
}

.rms-toast::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  border-radius: 4px 0 0 4px;
}

.rms-toast-success::before { background-color: var(--color-emerald); }
.rms-toast-error::before { background-color: var(--color-red); }
.rms-toast-danger::before { background-color: var(--color-red); }
.rms-toast-warning::before { background-color: var(--color-gold); }
.rms-toast-info::before { background-color: var(--color-blue); }

.rms-toast-icon {
  font-size: 1.15rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.rms-toast-success .rms-toast-icon { color: var(--color-emerald); }
.rms-toast-error .rms-toast-icon { color: var(--color-red); }
.rms-toast-danger .rms-toast-icon { color: var(--color-red); }
.rms-toast-warning .rms-toast-icon { color: var(--color-gold); }
.rms-toast-info .rms-toast-icon { color: var(--color-blue); }

.rms-toast-message {
  flex-grow: 1;
  line-height: 1.4;
  padding-right: 12px;
}

.rms-toast-close {
  background: none;
  border: none;
  color: var(--color-text-dim);
  cursor: pointer;
  padding: 0;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.2s;
  margin-left: auto;
  flex-shrink: 0;
}

.rms-toast-close:hover {
  color: var(--color-text);
}

@keyframes toastSlideIn {
  from {
    opacity: 0;
    transform: translateX(120%) translateY(0);
  }
  to {
    opacity: 1;
    transform: translateX(0) translateY(0);
  }
}

@keyframes toastSlideOut {
  from {
    opacity: 1;
    transform: translateX(0);
  }
  to {
    opacity: 0;
    transform: translateX(120%);
  }
}

.rms-toast-leaving {
  animation: toastSlideOut 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@media (max-width: 576px) {
  #toastContainer {
    top: 16px;
    right: 16px;
    width: calc(100% - 32px);
  }
}



/* Premium Teacher Dashboard KPI Cards */
.teacher-kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.tkpi-card {
  background: var(--color-bg-light);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 16px;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 120px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.02);
}
.tkpi-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}
.tkpi-title {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.tkpi-icon {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}
.tkpi-icon.blue { background: #eef2ff; color: #4f46e5; }
.tkpi-icon.green { background: #f0fdf4; color: #16a34a; }
.tkpi-icon.red { background: #fef2f2; color: #dc2626; }

.tkpi-value-row {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-top: 12px;
}
.tkpi-value {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-text);
  line-height: 1;
}
.tkpi-trend {
  font-size: 0.8rem;
  font-weight: 600;
}
.tkpi-trend.positive { color: #16a34a; }
.tkpi-trend.negative { color: #dc2626; }

.tkpi-footer {
  margin-top: 16px;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}
.tkpi-footer-bar {
  height: 4px;
  background: #e5e7eb;
  border-radius: 2px;
  margin-top: 8px;
  overflow: hidden;
}
.tkpi-footer-bar-fill {
  height: 100%;
  background: #4f46e5;
  border-radius: 2px;
}
.tkpi-footer-text {
  margin-top: 8px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.tkpi-badge {
  display: inline-block;
  padding: 2px 6px;
  border-radius: 10px;
  font-size: 0.7rem;
  font-weight: 600;
  background: #fee2e2;
  color: #991b1b;
  margin-top: 8px;
}
.tkpi-circle-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 20px;
  border-radius: 10px;
  background: #fee2e2;
  color: #991b1b;
  font-size: 0.65rem;
  font-weight: 700;
  margin-right: 4px;
  margin-top: 8px;
}
.tkpi-slider {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 8px;
  font-size: 0.7rem;
  color: var(--color-text-muted);
}
.tkpi-slider-track {
  flex: 1;
  height: 2px;
  background: #e5e7eb;
  margin: 0 8px;
  position: relative;
}
.tkpi-slider-thumb {
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 6px;
  height: 6px;
  background: #4f46e5;
  border-radius: 50%;
}

/* ── Premium Button Styles ────────────────────────────────────── */
.btn {
  font-family: 'Outfit', sans-serif;
  transition: all 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
  position: relative;
  z-index: 1;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-gold-light, #3B82F6), var(--color-gold-dark, #1D4ED8));
  border: none;
  box-shadow: 0 2px 6px rgba(37, 99, 235, 0.2);
  color: white;
  transition: all 0.2s ease;
}

.btn-primary:hover {
  filter: brightness(1.08);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
  color: white;
}

.btn-secondary {
  background: white;
  border: 1px solid var(--color-border);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
  color: var(--color-text);
  transition: all 0.2s ease;
}

.btn-secondary:hover {
  background: #f8fafc;
  border-color: #cbd5e1;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  color: var(--color-gold-dark, #1D4ED8);
}

.btn-info {
  background: linear-gradient(135deg, #0891B2, #0E7490);
  border: none;
  box-shadow: 0 2px 6px rgba(8, 145, 178, 0.2);
  color: white;
  transition: all 0.2s ease;
}

.btn-info:hover {
  filter: brightness(1.08);
  box-shadow: 0 4px 12px rgba(8, 145, 178, 0.35);
  color: white;
}

.btn-outline-primary, .btn-outline-success, .btn-outline-info, .btn-outline-warning, .btn-outline-secondary, .btn-outline-danger, .btn-outline-dark {
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
  position: relative;
  z-index: 1;
}

.btn-outline-primary:hover, .btn-outline-success:hover, .btn-outline-info:hover, .btn-outline-warning:hover, .btn-outline-secondary:hover, .btn-outline-danger:hover, .btn-outline-dark:hover {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* Hover ripple effect for specific buttons */
.btn-ripple-hover {
  position: relative;
  overflow: hidden;
  z-index: 1;
}
.btn-ripple-hover::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.5s ease-out, height 0.5s ease-out;
  z-index: -1;
}
.btn-ripple-hover:hover::after {
  width: 300px;
  height: 300px;
}

[data-theme="dark"] .btn-primary {
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

[data-theme="dark"] .btn-secondary {
  background: var(--color-bg-light);
  border-color: var(--color-border);
  color: var(--color-text);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .btn-secondary:hover {
  background: var(--color-bg);
  color: var(--color-gold-light);
}

/* ── Download Template Button ────────────────────────────────── */
.btn-download-template {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #10B981, #059669);
  color: #ffffff !important;
  border: none;
  font-weight: 600;
  padding: 10px 24px;
  border-radius: 25px;
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  letter-spacing: 0.5px;
  text-decoration: none;
  z-index: 1;
}

.btn-download-template:hover {
  background: linear-gradient(135deg, #34D399, #10B981);
  color: #ffffff;
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
}

.btn-download-template:active {
  transform: scale(0.98);
}

.btn-download-template::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100%;
  padding-top: 100%; /* square */
  background: rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  transform: translate(-50%, -50%) scale(0);
  opacity: 0;
  pointer-events: none;
  transition: transform 0.4s ease-out, opacity 0.4s ease-out;
}

.btn-download-template:active::after {
  transform: translate(-50%, -50%) scale(2);
  opacity: 1;
  transition: 0s;
}

/* --- UI Utility Classes & Enterprise Table Hero --- */
.text-slate-800 { color: #1e293b !important; }
.text-slate-700 { color: #334155 !important; }
.text-slate-600 { color: #475569 !important; }

.bg-indigo-subtle { background-color: #e0e7ff !important; }
.text-indigo { color: #4338ca !important; }
.border-indigo-subtle { border-color: #c7d2fe !important; }

.bg-emerald-subtle { background-color: #d1fae5 !important; }
.text-emerald { color: #059669 !important; }
.border-emerald-subtle { border-color: #a7f3d0 !important; }

.tb-hero {
    padding: 0 0 1rem 0;
    border-bottom: 1px solid #e2e8f0;
    margin-bottom: 1.25rem;
}
.tb-hero-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 0.25rem;
}
.tb-hero-sub {
    font-size: 0.875rem;
    color: #64748b;
}
.tb-container {
    max-width: 100%;
}
.tb-table th {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #64748b;
    background-color: #f8fafc;
    border-bottom: 1px solid #e2e8f0;
    padding: 10px 16px;
}
.tb-table td {
    padding: 10px 16px;
    vertical-align: middle;
    border-bottom: 1px solid #f1f5f9;
}
.tb-filter-bar {
    background-color: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 0.75rem 1rem;
    margin-bottom: 1.5rem;
}

/* Superadmin Portal SaaS Enhancements */
.shadow-2xs {
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
}
.shadow-glow-primary {
  box-shadow: 0 0 20px rgba(37, 99, 235, 0.15);
}
.shadow-glow-success {
  box-shadow: 0 0 20px rgba(16, 185, 129, 0.15);
}

@media (max-width: 575.98px) {
  .page-header {
    padding: 14px 16px !important;
    gap: 10px;
  }
  .page-header .page-title {
    font-size: 1.25rem !important;
  }
}

/* ================================================================
   Mobile Performance & Touch Ergonomics
   ================================================================ */
html, body {
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

@media (max-width: 768px) {
  /* 1. iOS Safari Auto-Zoom Fix: Prevent sudden viewport zoom upon focusing inputs */
  input.form-control,
  select.form-select,
  textarea.form-control,
  input[type="text"],
  input[type="number"],
  input[type="password"],
  input[type="email"],
  input[type="tel"],
  input[type="search"],
  select {
    font-size: 16px !important;
  }

  /* 2. Touch Target Ergonomics: Minimum 44px touch height for primary interactive targets */
  .btn-sm {
    min-height: 38px;
    padding: 7px 12px;
  }
  .pagination .page-link {
    min-width: 42px;
    min-height: 42px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
}

/* 3. Offscreen table row rendering performance for large lists */
.table tbody tr {
  content-visibility: auto;
  contain-intrinsic-size: 0 54px;
}

/* ================================================================
   Modern Reusable Component Utilities
   ================================================================ */

/* ── Shimmer / Skeleton Loaders ───────────────────────────────── */
@keyframes rmsShimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.skeleton {
  background: linear-gradient(90deg, #E2E8F0 25%, #F1F5F9 37%, #E2E8F0 63%);
  background-size: 400% 100%;
  animation: rmsShimmer 1.4s ease infinite;
  border-radius: var(--radius-xs);
  display: inline-block;
}

[data-theme="dark"] .skeleton {
  background: linear-gradient(90deg, #1E293B 25%, #334155 37%, #1E293B 63%);
  background-size: 400% 100%;
}

.skeleton-text {
  height: 14px;
  width: 100%;
  margin-bottom: 6px;
  border-radius: 4px;
}

.skeleton-circle {
  border-radius: 50% !important;
}

.skeleton-card {
  border-radius: var(--radius-lg);
  height: 120px;
  width: 100%;
}

/* ── Meaningful Empty States ──────────────────────────────────── */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px 24px;
  background: var(--color-surface);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-lg);
  margin: 16px 0;
}

.empty-state-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--color-primary-subtle);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: 16px;
}

.empty-state-title {
  font-family: 'Outfit', sans-serif;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 6px;
}

.empty-state-desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  max-width: 380px;
  margin-bottom: 20px;
  line-height: 1.5;
}

/* ── Filter Chips ─────────────────────────────────────────────── */
.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  background: var(--color-surface-hover);
  color: var(--color-text-secondary);
  font-size: 0.75rem;
  font-weight: 600;
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: var(--transition);
}

.filter-chip:hover, .filter-chip.active {
  background: var(--color-primary);
  color: #FFFFFF;
  border-color: var(--color-primary);
}

/* ── Subtle Badges ────────────────────────────────────────────── */
.badge-subtle-primary {
  background-color: var(--color-primary-subtle) !important;
  color: var(--color-primary) !important;
  font-weight: 600;
  border-radius: var(--radius-pill);
  padding: 4px 10px;
}

.badge-subtle-success {
  background-color: var(--color-success-subtle) !important;
  color: var(--color-success) !important;
  font-weight: 600;
  border-radius: var(--radius-pill);
  padding: 4px 10px;
}

.badge-subtle-warning {
  background-color: var(--color-warning-subtle) !important;
  color: var(--color-warning) !important;
  font-weight: 600;
  border-radius: var(--radius-pill);
  padding: 4px 10px;
}

.badge-subtle-danger {
  background-color: var(--color-danger-subtle) !important;
  color: var(--color-danger) !important;
  font-weight: 600;
  border-radius: var(--radius-pill);
  padding: 4px 10px;
}

.badge-subtle-secondary {
  background-color: var(--color-surface-hover) !important;
  color: var(--color-text-secondary) !important;
  font-weight: 600;
  border-radius: var(--radius-pill);
  padding: 4px 10px;
}

/* ── Accessible Form Focus Ring ───────────────────────────────── */
.form-control:focus, .form-select:focus {
  border-color: var(--color-primary) !important;
  box-shadow: 0 0 0 3px var(--color-primary-glow) !important;
}

/* ── Accessible Focus Rings on Interactive Elements ────────────── */
a:focus-visible, button:focus-visible, [tabindex]:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}