:root {
  /* OLIVER brand palette (from Master PPT Template) */
  --brand-yellow:       #FFCB05;
  --brand-yellow-soft:  #FFF5C4;
  --brand-orange:       #FF5C00;
  --brand-dark:         #1A1A1A;
  --brand-grey:         #626262;
  --brand-grey-light:   #DEE2E5;
  --brand-off-white:    #F6F7F7;

  /* Semantic aliases (kept so legacy var refs still resolve) */
  --primary-color:   var(--brand-yellow);
  --secondary-color: var(--brand-yellow);
  --accent-color:    var(--brand-orange);
  --text-dark:       var(--brand-dark);
  --text-light:      var(--brand-grey);
  --bg-light:        var(--brand-off-white);
  --bg-white:        #FFFFFF;
  --border-color:    var(--brand-grey-light);

  --shadow:    0 4px 12px rgba(26, 26, 26, 0.06);
  --shadow-lg: 0 12px 32px rgba(26, 26, 26, 0.08);

  /* Legacy compat — Microsoft button now uses brand orange */
  --ms-blue:      var(--brand-orange);
  --ms-blue-dark: #D94E00;
  --ms-gray:      var(--brand-grey);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  /* Reserve space below the fixed navbar. */
  padding-top: 64px;
  color: var(--text-dark);
  font-family: 'Montserrat', 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  font-weight: 400;
  line-height: 1.55;
  min-height: 100vh;
  background-color: var(--brand-off-white);
}

.container {
  max-width: 1200px;
  width: calc(100% - 2rem);
  margin: 2rem auto;
  padding: 2rem;
  background-color: var(--bg-white);
  border-radius: 16px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
}

/* ------------------------- Navbar ------------------------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1100;
  background: #FFFFFF !important;
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 1px 0 rgba(26, 26, 26, 0.04);
  min-height: 64px;
}

.navbar-brand {
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: 0.02em;
  color: var(--brand-dark) !important;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.25rem 0;
}

.navbar-brand .brand-mark {
  display: inline-block;
  width: 14px;
  height: 14px;
  background: var(--brand-yellow);
  margin-right: 0.25rem;
}

.nav-link {
  font-family: 'Montserrat', sans-serif;
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--brand-dark) !important;
  transition: color 0.15s ease, border-color 0.15s ease;
  border-radius: 0;
  margin: 0 4px;
  padding: 8px 12px !important;
  border-bottom: 2px solid transparent;
}

.nav-link:hover {
  color: var(--brand-dark) !important;
  border-bottom-color: var(--brand-yellow);
  background-color: transparent;
}

.nav-link.active {
  background: transparent !important;
  color: var(--brand-dark) !important;
  border-bottom: 2px solid var(--brand-yellow);
}

/* ------------------------- Headings & page title ------------------------- */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Montserrat', sans-serif;
  color: var(--brand-dark);
  font-weight: 700;
  margin-bottom: 1rem;
  letter-spacing: -0.005em;
}

h1 { font-size: 2.5rem; font-weight: 800; }
h2 { font-size: 2rem;   font-weight: 800; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

/* Yellow-highlight page title — signature OLIVER template motif. */
.page-title {
  display: inline-block;
  position: relative;
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: 2rem;
  line-height: 1.15;
  color: var(--brand-dark);
  padding: 0.15rem 0.6rem;
  background: linear-gradient(
    to top,
    var(--brand-yellow) 0,
    var(--brand-yellow) 70%,
    transparent 70%,
    transparent 100%
  );
  margin-bottom: 0.5rem;
}

.page-subtitle {
  color: var(--brand-grey);
  font-size: 0.95rem;
  margin-top: 0.25rem;
  margin-bottom: 0;
}

/* ------------------------- Tables ------------------------- */
.table {
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow);
  border: none;
  margin-top: 1.5rem;
  background: #FFFFFF;
}

.table thead th {
  background: var(--brand-dark);
  color: #FFFFFF;
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  border: none;
  padding: 1rem 1.25rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.table tbody tr {
  transition: background-color 0.15s ease;
  border: none;
}

.table tbody tr:hover {
  background-color: var(--brand-off-white);
}

.table tbody td {
  padding: 1.1rem 1.25rem;
  border-color: var(--border-color);
  vertical-align: middle;
  font-size: 0.92rem;
}

/* ------------------------- Buttons ------------------------- */
.btn {
  font-family: 'Montserrat', sans-serif;
  border-radius: 6px;
  font-weight: 600;
  padding: 8px 18px;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease;
  border: 1px solid transparent;
  text-transform: none;
  font-size: 0.85rem;
  letter-spacing: 0.01em;
}

.btn-primary {
  background: var(--brand-yellow);
  color: var(--brand-dark);
  border-color: var(--brand-yellow);
}

.btn-primary:hover {
  background: #F2BE00;
  border-color: #F2BE00;
  color: var(--brand-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(255, 203, 5, 0.35);
}

.btn-primary:focus,
.btn-primary:active {
  background: #F2BE00 !important;
  border-color: #F2BE00 !important;
  color: var(--brand-dark) !important;
  box-shadow: 0 0 0 3px rgba(255, 203, 5, 0.25) !important;
}

.btn-outline-primary {
  background: transparent;
  color: var(--brand-dark);
  border: 1px solid var(--brand-dark);
}

.btn-outline-primary:hover {
  background: var(--brand-yellow);
  color: var(--brand-dark);
  border-color: var(--brand-yellow);
}

.btn-warning {
  background: var(--brand-yellow);
  border-color: var(--brand-yellow);
  color: var(--brand-dark);
}

.btn-warning:hover {
  background: #F2BE00;
  border-color: #F2BE00;
  color: var(--brand-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}

.btn-danger {
  background: var(--brand-orange);
  border-color: var(--brand-orange);
  color: #FFFFFF;
}

.btn-danger:hover {
  background: #D94E00;
  border-color: #D94E00;
  color: #FFFFFF;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(255, 92, 0, 0.3);
}

.btn-outline-danger {
  background: transparent;
  color: var(--brand-orange);
  border: 1px solid var(--brand-orange);
}

.btn-outline-danger:hover {
  background: var(--brand-orange);
  color: #FFFFFF;
  border-color: var(--brand-orange);
}

.btn-success {
  background: #1F9D55;
  border-color: #1F9D55;
  color: #FFFFFF;
}

.btn-success:hover {
  background: #198044;
  border-color: #198044;
  color: #FFFFFF;
  transform: translateY(-1px);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.78rem;
  margin: 0 2px;
}

/* ------------------------- Forms ------------------------- */
.form-control,
.form-select {
  font-family: 'Montserrat', sans-serif;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  padding: 10px 12px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  font-size: 0.95rem;
  color: var(--brand-dark);
  background-color: #FFFFFF;
}

.form-control:focus,
.form-select:focus {
  border-color: var(--brand-dark);
  box-shadow: 0 0 0 3px rgba(255, 203, 5, 0.25);
  outline: none;
}

.form-label {
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--brand-dark);
  margin-bottom: 0.4rem;
  letter-spacing: 0.01em;
}

/* ------------------------- Cards ------------------------- */
.card {
  border-radius: 12px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  background: #FFFFFF;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* Yellow leading icon on card section titles (h5 / h6 inside .card-header).
   Excludes modal headers (which are black with white text) and admin tabs. */
.card-header:not(.card-header-tabs):not(.modal-header) h5 > i.fas:first-child,
.card-header:not(.card-header-tabs):not(.modal-header) h6 > i.fas:first-child,
.card-header h5 > i.fas:first-child,
.card-header h6 > i.fas:first-child {
  color: var(--brand-yellow);
  filter: drop-shadow(0 1px 0 rgba(26, 26, 26, 0.06));
}

/* Modal headers keep white icons (dark background). */
.modal-header h5 > i.fas:first-child,
.modal-header h6 > i.fas:first-child {
  color: #FFFFFF;
  filter: none;
}

/* Short yellow accent line under card section titles —
   tiny rhythm element pulled from the template's "01" chapter marker. */
.card-header h5,
.card-header h6 {
  position: relative;
  padding-bottom: 0.45rem;
}

.card-header h5::after,
.card-header h6::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 28px;
  height: 3px;
  background: var(--brand-yellow);
  border-radius: 2px;
}

/* The accent line doesn't belong on modal headers, the tab-bar header,
   or any header that is itself a tab-strip. */
.modal-header h5::after,
.modal-header h6::after,
.card-header.bg-white > .nav-tabs ~ h6::after,
.card-header h5.modal-title::after,
.card-header h6.modal-title::after {
  display: none;
}

/* ------------------------- Stat tile (template-inspired) -------------------------
   White card with a thick yellow strip on the left, big near-black number,
   uppercase mid-grey label. Replaces the old orange gradient stat-card. */
.stat-tile {
  position: relative;
  background: #FFFFFF;
  border-radius: 10px;
  padding: 1.1rem 1.1rem 1.1rem 1.6rem;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  gap: 0.85rem;
  min-height: 96px;
  overflow: hidden;
}

.stat-tile::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 8px;
  background: var(--brand-yellow);
}

.stat-tile .stat-tile-icon {
  font-size: 1.6rem;
  color: var(--brand-yellow);
  flex-shrink: 0;
  filter: drop-shadow(0 1px 0 rgba(26, 26, 26, 0.06));
}

.stat-tile .stat-tile-value {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--brand-dark);
  line-height: 1.1;
  margin: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.stat-tile .stat-tile-label {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brand-grey);
  margin: 0;
  line-height: 1.2;
}

/* ------------------------- Badges ------------------------- */
.badge {
  font-family: 'Montserrat', sans-serif;
  border-radius: 4px;
  padding: 5px 10px;
  font-weight: 600;
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.bg-warning { background-color: var(--brand-yellow) !important; color: var(--brand-dark) !important; }
.bg-primary { background-color: var(--brand-dark) !important; color: #FFFFFF !important; }
.bg-danger  { background-color: var(--brand-orange) !important; color: #FFFFFF !important; }

.text-muted {
  color: var(--brand-grey) !important;
}

/* ------------------------- Alerts ------------------------- */
.alert {
  border-radius: 8px;
  border: 1px solid var(--border-color);
  padding: 0.9rem 1rem;
  margin-bottom: 1.25rem;
  font-size: 0.92rem;
}

.alert-danger  { background: #FEEFE5; border-color: #FFCAA8; color: #8A2E00; }
.alert-success { background: #E8F5EE; border-color: #B7DDC5; color: #155724; }
.alert-warning { background: var(--brand-yellow-soft); border-color: var(--brand-yellow); color: var(--brand-dark); }
.alert-info    { background: #EEF6FB; border-color: #C9E1ED; color: #0C4A6E; }

/* ------------------------- Modals ------------------------- */
.modal {
  padding: 0 !important;
}

.modal-dialog {
  margin: 1.75rem auto;
  max-width: calc(100% - 3.5rem);
  display: flex;
  align-items: center;
  min-height: calc(100vh - 3.5rem);
}

.modal-dialog-centered {
  display: flex;
  align-items: center;
  min-height: calc(100vh - 3.5rem);
}

.modal-content {
  border-radius: 12px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  width: 100%;
  position: relative;
}

.modal-header {
  border-radius: 12px 12px 0 0;
  background: var(--brand-dark);
  color: #FFFFFF;
  border-bottom: none;
  padding: 1.1rem 1.5rem;
}

.modal-title {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  color: #FFFFFF;
}

.modal-header .btn-close {
  filter: invert(1) grayscale(100%) brightness(200%);
  opacity: 0.8;
}

.modal-header .btn-close:hover {
  opacity: 1;
}

.modal-body {
  padding: 1.5rem;
  max-height: 70vh;
  overflow-y: auto;
}

.modal-footer {
  border-top: 1px solid var(--border-color);
  border-radius: 0 0 12px 12px;
  padding: 1rem 1.5rem;
}

@media (max-width: 768px) {
  .modal-dialog {
    margin: 1rem;
    max-width: calc(100% - 2rem);
    min-height: calc(100vh - 2rem);
  }

  .modal-body {
    max-height: 60vh;
    padding: 1rem;
  }

  .container {
    margin: 1rem auto;
    padding: 1rem;
    border-radius: 12px;
  }

  .page-title { font-size: 1.5rem; }

  .table-responsive { border-radius: 12px; }
}

.modal-backdrop {
  background-color: rgba(26, 26, 26, 0.5);
}

/* ------------------------- Microsoft / SSO button ------------------------- */
.btn-microsoft {
  background-color: var(--brand-orange);
  border-color: var(--brand-orange);
  color: #FFFFFF;
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  transition: background-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-microsoft:hover {
  background-color: var(--ms-blue-dark);
  border-color: var(--ms-blue-dark);
  color: #FFFFFF;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(255, 92, 0, 0.3);
}

.btn-microsoft:focus,
.btn-microsoft:active {
  background-color: var(--ms-blue-dark) !important;
  border-color: var(--ms-blue-dark) !important;
  color: #FFFFFF !important;
  box-shadow: 0 0 0 3px rgba(255, 92, 0, 0.25) !important;
  transform: translateY(0);
}

/* Auth-page divider ("or") */
.auth-divider {
  position: relative;
  text-align: center;
  margin: 1.5rem 0;
}

.auth-divider::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background-color: var(--border-color);
}

.auth-divider-text {
  background-color: #FFFFFF;
  padding: 0 1rem;
  color: var(--brand-grey);
  font-size: 0.85rem;
  position: relative;
  z-index: 1;
}

.local-auth-section {
  border-top: 1px solid var(--border-color);
  padding-top: 1.5rem;
  margin-top: 1.5rem;
}

.local-auth-section .form-label {
  color: var(--brand-grey);
}

.local-auth-section .btn-primary {
  background: var(--brand-dark);
  border-color: var(--brand-dark);
  color: #FFFFFF;
}

.local-auth-section .btn-primary:hover {
  background: #000000;
  border-color: #000000;
  color: #FFFFFF;
}

/* ------------------------- Star rating ------------------------- */
.star-interactive, .star-clickable {
  cursor: pointer;
  font-size: 1.3rem;
  transition: color 0.15s, transform 0.15s;
  color: var(--border-color);
}

.star-interactive:hover, .star-clickable:hover {
  transform: scale(1.15);
}

.star-rating-edit {
  padding: 8px 0;
}

/* Discipline badge — kept distinct */
.bg-purple {
  background-color: #6f42c1 !important;
  color: #FFFFFF !important;
}