/* ===== EMTS / CertApp design system ===== */
@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap");

:root {
  /* Brand — from GLOBAL EMTS TRAINING SOLUTIONS logo */
  --emts-blue-400: #9ed7f4;
  --emts-blue-500: #5dafe2;
  --emts-blue-600: #3a96d4;
  --emts-blue-700: #2a7fbe;
  --emts-blue-900: #0f2d4a;
  --emts-gold-300: #e8cb8c;
  --emts-gold-500: #c79d4e;
  --emts-gold-600: #b0883f;

  --brand-h: 204;
  --brand-s: 68%;
  --brand-l: 52%;
  --brand: var(--emts-blue-600);
  --brand-600: var(--emts-blue-700);
  --brand-700: #1f6aa8;
  --accent: var(--emts-gold-500);
  --accent-soft: var(--emts-gold-300);

  --radius: 0.85rem;
  --radius-sm: 0.55rem;
  --radius-lg: 1.15rem;
  --ring: 0 0 0 0.22rem color-mix(in srgb, var(--bs-primary) 32%, transparent);

  --nav-height: 4rem;
  --shadow-sm: 0 4px 14px rgba(15, 45, 74, 0.06);
  --shadow-md: 0 12px 32px rgba(15, 45, 74, 0.1);
  --shadow-lg: 0 20px 48px rgba(15, 45, 74, 0.14);
  --gradient-brand: linear-gradient(135deg, var(--emts-blue-500) 0%, var(--emts-blue-700) 100%);
  --gradient-gold: linear-gradient(135deg, var(--emts-gold-300) 0%, var(--emts-gold-500) 100%);
  --gradient-page: radial-gradient(ellipse 120% 80% at 100% -20%, rgba(93, 175, 226, 0.12), transparent 50%),
    radial-gradient(ellipse 80% 60% at 0% 100%, rgba(199, 157, 78, 0.08), transparent 45%);
}

:root[data-bs-theme="light"] {
  --bs-body-bg: #eef3f9;
  --bs-body-color: #1a2b3c;
  --bs-link-color: var(--emts-blue-700);
  --bs-primary: var(--emts-blue-600);
  --bs-border-color: #d4dde8;
  --card-bg: #ffffff;
  --table-header-bg: #e8eef6;
  --subtle-hover-bg: #e2eaf4;
  --table-row-hover: #f0f5fb;
  --placeholder-color: #7b8a9c;
  --muted: #5c6d80;
  --nav-bg: rgba(255, 255, 255, 0.88);
  --nav-border: rgba(15, 45, 74, 0.08);
}

:root[data-bs-theme="dark"] {
  --bs-body-bg: #0c1219;
  --bs-body-color: #e8eef5;
  --bs-link-color: var(--emts-blue-400);
  --bs-primary: var(--emts-blue-500);
  --bs-border-color: #2a3544;
  --card-bg: #141c27;
  --table-header-bg: #1a2432;
  --subtle-hover-bg: #243040;
  --table-row-hover: rgba(255, 255, 255, 0.05);
  --placeholder-color: #8a9aad;
  --muted: #9eb0c4;
  --nav-bg: rgba(12, 18, 25, 0.92);
  --nav-border: rgba(255, 255, 255, 0.06);
  --shadow-sm: 0 4px 14px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 12px 32px rgba(0, 0, 0, 0.35);
  --gradient-page: radial-gradient(ellipse 100% 70% at 100% 0%, rgba(93, 175, 226, 0.15), transparent 55%),
    radial-gradient(ellipse 70% 50% at 0% 100%, rgba(199, 157, 78, 0.06), transparent 50%);
}

/* ===== Base & layout shell ===== */
html {
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  letter-spacing: 0.01em;
  min-height: 100vh;
  background: var(--gradient-page), var(--bs-body-bg);
  background-attachment: fixed;
}

.ph {
  font-size: 1.05em;
  line-height: 1;
  vertical-align: -0.12em;
}

.app-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.app-navbar {
  min-height: var(--nav-height);
  background: var(--nav-bg) !important;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--nav-border) !important;
  box-shadow: var(--shadow-sm);
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.app-navbar .container-fluid {
  width: min(100%, 1360px);
  margin-inline: auto;
  padding-inline: clamp(0.75rem, 2vw, 1.5rem);
}

.app-admin-nav .nav-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--bs-body-color) !important;
  white-space: nowrap;
  padding: 0.35rem 0.55rem;
  border-radius: 0.5rem;
}

.app-admin-nav .nav-link:hover,
.app-admin-nav .nav-link:focus {
  background: rgba(93, 175, 226, 0.14);
  color: var(--bs-body-color) !important;
}

.app-navbar .navbar-toggler {
  border-color: var(--nav-border);
  padding: 0.3rem 0.45rem;
}

.app-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none !important;
  color: var(--bs-body-color) !important;
  font-weight: 700;
  font-size: 1.05rem;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.app-brand:hover {
  opacity: 0.92;
  transform: translateY(-1px);
  color: var(--bs-body-color) !important;
}

.app-brand__mark {
  width: auto;
  height: 3.35rem;
  max-width: 3.35rem;
  flex-shrink: 0;
  filter: drop-shadow(0 2px 6px rgba(93, 175, 226, 0.35));
}

.app-brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.app-brand__title {
  font-weight: 800;
  letter-spacing: 0.02em;
}

.app-brand__sub {
  font-size: 0.65rem;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.app-main {
  flex: 1;
  padding-bottom: 3rem;
  width: min(100%, 1360px);
  margin-inline: auto;
  padding-inline: clamp(0.75rem, 2vw, 1.5rem);
}

.app-main > .container,
.app-main > .container-fluid {
  max-width: none;
  padding-inline: 0;
}

.app-footer {
  padding: 1rem 0 1.5rem;
  text-align: center;
  font-size: 0.8rem;
  color: var(--muted);
  border-top: 1px solid var(--bs-border-color);
  margin-top: auto;
}

/* ===== Page hero ===== */
.page-hero {
  margin-bottom: 1.75rem;
  padding: 0.35rem 0 0.35rem;
}

.page-hero--split {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  text-align: center;
}

.page-hero__logo {
  width: clamp(340px, 48vw, 540px);
  height: auto;
  flex: 0 0 auto;
}

.page-hero__content {
  width: 100%;
  max-width: 42rem;
  margin-inline: auto;
  text-align: center;
}

.page-hero h1,
.page-hero h2,
.page-hero h3,
.page-hero__title {
  font-weight: 800;
  letter-spacing: 0.04em;
  text-align: center;
}

.page-hero__lead {
  margin-inline: auto;
  max-width: 38rem;
  text-align: center;
}

.page-hero .text-muted {
  color: var(--muted) !important;
}

/* ===== Detail meta strip (class / profile pages) ===== */
.detail-meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr));
  gap: 1rem 1.5rem;
}

.detail-meta-item__label {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.25rem;
}

.detail-meta-item__value {
  font-weight: 500;
  line-height: 1.35;
  word-break: break-word;
}

.detail-meta-item--wide {
  grid-column: 1 / -1;
}

@media (min-width: 992px) {
  .detail-meta-item--wide {
    grid-column: span 2;
  }
}

.class-signup-panel {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 1rem;
}

.class-signup-panel__qr {
  width: 148px;
  height: 148px;
  flex: 0 0 auto;
  border: 1px solid var(--bs-border-color);
  border-radius: var(--radius-sm);
}

.class-signup-panel__url {
  flex: 1 1 12rem;
  min-width: 0;
}

/* ===== Cards & surfaces ===== */
.container .shadow-sm.rounded,
.card {
  background: var(--card-bg);
  border: 1px solid var(--bs-border-color);
  box-shadow: var(--shadow-sm);
  border-radius: var(--radius);
  transition:
    box-shadow 0.28s ease,
    transform 0.28s ease,
    border-color 0.28s ease;
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card-header {
  background: transparent;
  border-bottom-color: var(--bs-border-color);
}

.card-header.bg-white {
  background: transparent !important;
}

/* Home / dashboard tiles */
.app-tile {
  border: 1px solid var(--bs-border-color);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  display: flex;
  align-items: center;
  gap: 0.85rem;
  background: var(--card-bg);
  text-decoration: none !important;
  color: inherit !important;
  transition:
    transform 0.22s cubic-bezier(0.34, 1.2, 0.64, 1),
    box-shadow 0.22s ease,
    border-color 0.22s ease;
}

.app-tile:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: color-mix(in srgb, var(--bs-primary) 35%, var(--bs-border-color));
}

.app-tile__icon {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  flex-shrink: 0;
  background: color-mix(in srgb, var(--bs-primary) 12%, transparent);
  color: var(--bs-primary);
  transition: transform 0.25s ease;
}

.app-tile:hover .app-tile__icon {
  transform: scale(1.08);
}

.app-tile__icon--gold {
  background: color-mix(in srgb, var(--accent) 18%, transparent);
  color: var(--emts-gold-600);
}

.app-tile__icon--success {
  background: color-mix(in srgb, #198754 14%, transparent);
  color: #198754;
}

.app-tile__icon--info {
  background: color-mix(in srgb, var(--emts-blue-500) 16%, transparent);
  color: var(--emts-blue-600);
}

.app-tile__icon--warning {
  background: color-mix(in srgb, #ffc107 20%, transparent);
  color: #b8860b;
}

.app-tile__icon--danger {
  background: color-mix(in srgb, #dc3545 14%, transparent);
  color: #dc3545;
}

/* ===== Buttons ===== */
.btn {
  border-radius: var(--radius-sm);
  font-weight: 600;
  transition:
    background-color 0.2s ease,
    border-color 0.2s ease,
    color 0.2s ease,
    transform 0.15s ease,
    box-shadow 0.2s ease;
}

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

.btn-primary {
  background: var(--gradient-brand);
  border: none;
  box-shadow: 0 4px 14px rgba(58, 150, 212, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--emts-blue-600), var(--emts-blue-900));
  box-shadow: 0 6px 20px rgba(58, 150, 212, 0.45);
}

.btn-primary:active {
  box-shadow: 0 2px 8px rgba(58, 150, 212, 0.3) !important;
}

.btn-outline-primary {
  border-color: var(--emts-blue-600);
  color: var(--emts-blue-700);
}

:root[data-bs-theme="dark"] .btn-outline-primary {
  color: var(--emts-blue-400);
  border-color: var(--emts-blue-500);
}

.btn-outline-secondary {
  border-color: var(--bs-border-color);
  color: var(--bs-body-color);
}

.btn-outline-secondary:hover {
  background-color: var(--subtle-hover-bg);
  color: var(--bs-body-color);
}

:root[data-bs-theme="dark"] .btn-outline-dark {
  color: var(--bs-body-color);
  border-color: #6a7d92;
  background-color: transparent;
}

:root[data-bs-theme="dark"] .btn-outline-dark:hover,
:root[data-bs-theme="dark"] .btn-outline-dark:focus-visible {
  color: #fff;
  background-color: var(--subtle-hover-bg);
  border-color: var(--emts-blue-400);
}

.btn-ripple-host {
  position: relative;
  overflow: hidden;
}

.btn-ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.45);
  transform: scale(0);
  animation: ripple 0.55s ease-out;
  pointer-events: none;
}

@keyframes ripple {
  to {
    transform: scale(2.5);
    opacity: 0;
  }
}

/* ===== Forms ===== */
.form-control,
.form-select {
  background-color: var(--card-bg);
  color: var(--bs-body-color);
  border-color: var(--bs-border-color);
  border-radius: var(--radius-sm);
  padding-top: 0.55rem;
  padding-bottom: 0.55rem;
  transition:
    border-color 0.2s ease,
    box-shadow 0.2s ease;
}

.form-control:focus,
.form-select:focus {
  border-color: var(--emts-blue-500);
  box-shadow: var(--ring);
}

.form-control:disabled,
.form-select:disabled {
  background-color: color-mix(in srgb, var(--card-bg) 85%, var(--bs-border-color) 15%);
}

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

.form-text {
  color: var(--muted);
}

.input-group-text {
  background-color: var(--card-bg);
  border-color: var(--bs-border-color);
}

/* ===== Tables ===== */
.table-responsive {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--bs-border-color);
  background: var(--card-bg);
  box-shadow: var(--shadow-sm);
}

.table {
  margin-bottom: 0;
}

.table thead.table-light {
  background: var(--table-header-bg) !important;
  border-bottom: 1px solid var(--bs-border-color);
}

:root[data-bs-theme="dark"] .table thead.table-light th {
  color: #d9e4f1;
}

.table td,
.table th {
  border-color: var(--bs-border-color) !important;
  padding-top: 0.72rem;
  padding-bottom: 0.72rem;
  vertical-align: middle;
}

.table tbody tr {
  transition: background-color 0.15s ease;
}

.table tbody tr:hover {
  background: var(--table-row-hover);
}

.table td.text-end {
  white-space: normal;
}

.table-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  justify-content: flex-end;
  align-items: center;
}

.table-actions form {
  margin: 0;
}

.table-actions .btn {
  min-height: 2rem;
}

.page-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.page-toolbar__actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.instructors-search {
  max-width: 760px;
}

.instructors-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.38rem;
  justify-content: flex-end;
  align-items: center;
}

.instructors-actions form {
  margin: 0;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.instructors-actions__delete {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.instructors-actions__delete .form-select {
  width: 180px;
}

.instructor-filter-form .form-label {
  font-weight: 600;
  color: var(--muted);
}

.instructor-filter-actions {
  display: flex;
  gap: 0.5rem;
}

.instructor-filter-actions .btn {
  flex: 1;
}

.avatar-32 {
  width: 32px;
  height: 32px;
  object-fit: cover;
  border-radius: 50%;
  border: 1px solid var(--bs-border-color);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
}

/* ===== Alerts & badges ===== */
.alert {
  border-radius: var(--radius-sm);
  border: none;
  box-shadow: var(--shadow-sm);
}

.alert-animated {
  animation: alert-in 0.45s cubic-bezier(0.34, 1.2, 0.64, 1) both;
}

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

.badge {
  border-radius: 999px;
  padding: 0.42em 0.72em;
  font-weight: 600;
  letter-spacing: 0.02em;
}

/* ===== Auth layout ===== */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
  background: var(--gradient-page), var(--bs-body-bg);
}

.auth-panel {
  width: 100%;
  max-width: 920px;
  display: grid;
  grid-template-columns: 1fr;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--bs-border-color);
  background: var(--card-bg);
}

@media (min-width: 768px) {
  .auth-panel {
    grid-template-columns: 1fr 1fr;
    min-height: 520px;
  }
}

.auth-panel__brand {
  background: linear-gradient(160deg, var(--emts-blue-900) 0%, #163a5c 45%, var(--emts-blue-700) 100%);
  color: #fff;
  padding: 2.5rem 2rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.auth-panel__brand::before {
  content: "";
  position: absolute;
  inset: -40%;
  background: radial-gradient(circle at 30% 20%, rgba(232, 203, 140, 0.25), transparent 45%),
    radial-gradient(circle at 80% 80%, rgba(158, 215, 244, 0.2), transparent 40%);
  animation: auth-glow 8s ease-in-out infinite alternate;
}

@keyframes auth-glow {
  from {
    opacity: 0.6;
    transform: scale(1);
  }
  to {
    opacity: 1;
    transform: scale(1.05);
  }
}

.auth-panel__logo {
  position: relative;
  z-index: 1;
  width: min(100%, 360px);
  height: auto;
  filter: drop-shadow(0 8px 24px rgba(0, 0, 0, 0.35));
}

.auth-panel__wordmark {
  position: relative;
  z-index: 1;
  color: #fff;
}

.auth-panel__tagline {
  position: relative;
  z-index: 1;
  font-size: 0.95rem;
  opacity: 0.9;
  max-width: 280px;
}

.auth-panel__form {
  padding: 2rem 2rem 2.25rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.auth-panel__form h3 {
  font-weight: 800;
  letter-spacing: -0.02em;
}

/* Instructor photo 3:4 */
.instructor-photo-3x4 {
  width: 180px;
  max-width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: 2px solid color-mix(in srgb, var(--accent) 40%, var(--bs-border-color));
  box-shadow: var(--shadow-md);
}

.instructor-photo-compact {
  width: 120px;
}

/* ===== DataTables ===== */
.dataTables_wrapper {
  --dt-border: var(--bs-border-color);
}

.dataTables_wrapper .dt-toolbar {
  padding: 0.25rem 0;
}

.dataTables_wrapper .dataTables_filter input,
.dataTables_wrapper .dataTables_length select {
  background-color: var(--card-bg);
  color: var(--bs-body-color);
  border: 1px solid var(--bs-border-color);
  border-radius: var(--radius-sm);
  min-height: 2.15rem;
}

.dataTables_wrapper .dataTables_filter input:focus,
.dataTables_wrapper .dataTables_length select:focus {
  border-color: var(--emts-blue-500);
  box-shadow: var(--ring);
  outline: none;
}

.dataTables_wrapper .dataTables_info,
.dataTables_wrapper .dataTables_length,
.dataTables_wrapper .dataTables_filter {
  color: var(--muted) !important;
  font-size: 0.88rem;
}

.dataTables_wrapper .dataTables_filter label,
.dataTables_wrapper .dataTables_length label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
}

.dataTables_wrapper .dataTables_length select {
  min-width: 4.8rem;
}

.dataTables_wrapper table.dataTable thead > tr > th.sorting,
.dataTables_wrapper table.dataTable thead > tr > th.sorting_asc,
.dataTables_wrapper table.dataTable thead > tr > th.sorting_desc {
  position: relative;
}

.dataTables_wrapper table.dataTable.dtr-inline.collapsed > tbody > tr > td.dtr-control:before,
.dataTables_wrapper table.dataTable.dtr-inline.collapsed > tbody > tr > th.dtr-control:before {
  background: var(--gradient-brand);
  border: none;
}

.dataTables_wrapper .dataTables_paginate {
  display: flex;
  gap: 0.25rem;
}

.dataTables_wrapper .page-link {
  border-color: var(--bs-border-color);
  background: var(--card-bg);
  color: var(--bs-body-color);
}

.dataTables_wrapper .page-item.active .page-link {
  background: var(--gradient-brand);
  border-color: transparent;
  color: #fff;
}

.dataTables_wrapper .page-link:hover {
  background: var(--subtle-hover-bg);
  color: var(--bs-body-color);
}

.dataTables_wrapper .page-item.disabled .page-link {
  background: transparent;
  color: var(--muted);
}

@media (max-width: 768px) {
  .dataTables_wrapper .dt-toolbar {
    gap: 0.5rem !important;
  }

  .dataTables_wrapper .dataTables_filter,
  .dataTables_wrapper .dataTables_length,
  .dataTables_wrapper .dataTables_info,
  .dataTables_wrapper .dataTables_paginate {
    width: 100%;
  }

  .dataTables_wrapper .dataTables_paginate {
    justify-content: flex-start;
  }
}

/* ===== Reveal on scroll ===== */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition:
    opacity 0.55s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.55s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal.reveal-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Focus & links ===== */
a {
  color: var(--bs-link-color);
  transition: color 0.15s ease;
}

a:hover {
  color: color-mix(in srgb, var(--bs-link-color) 80%, var(--accent) 20%);
}

.btn-primary:focus-visible,
.btn-outline-secondary:focus-visible,
.btn-outline-primary:focus-visible,
.form-control:focus-visible,
.form-select:focus-visible {
  box-shadow: var(--ring);
  outline: none;
}

/* ===== Dark mode legacy fixes ===== */
:root[data-bs-theme="dark"] .bg-white {
  background-color: var(--card-bg) !important;
  color: var(--bs-body-color) !important;
}

:root[data-bs-theme="dark"] .bg-light,
:root[data-bs-theme="dark"] .table-light {
  background-color: #ffffff !important;
  color: #101820 !important;
}

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

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

:root[data-bs-theme="dark"] .table {
  --bs-table-bg: transparent;
  --bs-table-hover-bg: var(--table-row-hover);
}

:root[data-bs-theme="dark"] .table thead.table-light th,
:root[data-bs-theme="dark"] .table-light th,
:root[data-bs-theme="dark"] .table-light td {
  color: #101820 !important;
}

:root[data-bs-theme="dark"] .table thead.table-light th {
  background-color: #ffffff !important;
}

:root[data-bs-theme="dark"] .dropdown-menu,
:root[data-bs-theme="dark"] .modal-content {
  background-color: var(--card-bg);
  border-color: var(--bs-border-color);
}

:root[data-bs-theme="dark"] .btn-close {
  filter: invert(1) grayscale(100%);
}

.badge.bg-warning.text-dark,
.badge.bg-info.text-dark {
  color: #1a2b3c !important;
}

:root[data-bs-theme="dark"] .badge.bg-info.text-dark {
  background-color: #3c6f80 !important;
  color: #f4fbff !important;
}

:root[data-bs-theme="dark"] .badge.bg-warning.text-dark {
  background-color: #b98a21 !important;
  color: #12161b !important;
}

:root[data-bs-theme="dark"] #sidebar {
  background-color: var(--card-bg) !important;
  border-color: var(--bs-border-color) !important;
}

td.cal-day {
  cursor: pointer;
  transition: background 0.15s ease;
}

:root[data-bs-theme="light"] td.cal-day:hover {
  background: var(--table-row-hover);
}

:root[data-bs-theme="dark"] td.cal-day:hover {
  background: var(--table-row-hover);
}

html {
  transition: background-color 0.3s ease, color 0.3s ease;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
    transition: none;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .app-tile:hover,
  .card:hover,
  .app-brand:hover {
    transform: none;
  }

  .btn-ripple,
  .auth-panel__brand::before {
    animation: none !important;
  }
}

@media (max-width: 768px) {
  .page-hero--split {
    gap: 0.7rem;
  }

  .page-hero__logo {
    width: clamp(300px, 72vw, 460px);
  }

  .app-brand__mark {
    height: 2.65rem;
    max-width: 2.65rem;
  }

  .table-actions {
    justify-content: flex-start;
  }

  .page-toolbar__actions,
  .instructors-actions,
  .instructors-actions__delete {
    justify-content: flex-start;
  }

  .instructors-actions {
    justify-content: flex-start;
  }

  .instructors-actions__delete .form-select {
    width: 100%;
  }

  .instructor-filter-actions .btn {
    flex: initial;
  }
}

/* ===== Workflow form builder ===== */
.wf-builder {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr) minmax(260px, 320px);
  min-height: 28rem;
  border-top: 1px solid var(--bs-border-color);
}

.wf-builder__palette {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 0.85rem 0.7rem;
  border-right: 1px solid var(--bs-border-color);
  background: color-mix(in srgb, var(--table-header-bg) 70%, transparent);
}

.wf-builder__palette-title {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.25rem;
}

.wf-palette-btn {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  width: 100%;
  border: 1px solid var(--bs-border-color);
  background: var(--card-bg);
  color: inherit;
  border-radius: var(--radius-sm);
  padding: 0.38rem 0.5rem;
  font-size: 0.8rem;
  text-align: left;
}

.wf-palette-btn:hover {
  background: var(--subtle-hover-bg);
  border-color: var(--emts-blue-500);
}

.wf-builder__canvas {
  padding: 0.9rem;
  min-width: 0;
}

.wf-canvas {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  min-height: 12rem;
}

.wf-canvas__empty {
  border: 1px dashed var(--bs-border-color);
  border-radius: var(--radius);
  color: var(--muted);
  padding: 2rem 1rem;
  text-align: center;
}

.wf-canvas-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
  border: 1px solid var(--bs-border-color);
  border-radius: var(--radius-sm);
  padding: 0.55rem 0.7rem;
  background: var(--card-bg);
  cursor: pointer;
}

.wf-canvas-item:hover,
.wf-canvas-item.is-selected {
  border-color: var(--emts-blue-500);
}

.wf-canvas-item.is-selected {
  box-shadow: var(--ring);
}

.wf-canvas-item__main {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.wf-canvas-item__type {
  font-size: 0.7rem;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.wf-canvas-item__label {
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.wf-canvas-item__actions {
  display: flex;
  gap: 0.25rem;
  flex-shrink: 0;
}

.wf-builder__side {
  display: flex;
  flex-direction: column;
  border-left: 1px solid var(--bs-border-color);
  min-width: 0;
}

.wf-props {
  padding: 0.85rem 0.8rem;
  border-bottom: 1px solid var(--bs-border-color);
}

.wf-props__title {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.5rem;
}

.wf-preview {
  padding: 0.85rem 0.8rem;
  background: color-mix(in srgb, var(--table-header-bg) 55%, transparent);
  flex: 1;
}

.wf-preview__title,
.wf-preview__form-title {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.6rem;
}

.wf-preview__hint {
  font-weight: 500;
  letter-spacing: 0;
  text-transform: none;
  opacity: 0.8;
}

.wf-preview__form-title {
  text-transform: none;
  letter-spacing: 0;
  font-size: 0.95rem;
  color: inherit;
}

.wf-preview__body {
  pointer-events: auto;
}

.help-section__title {
  font-size: 1.15rem;
  margin-bottom: 0.75rem;
}

.help-steps {
  margin: 0;
  padding-left: 1.2rem;
}

.help-steps > li + li {
  margin-top: 0.65rem;
}

.help-steps--bullets {
  padding-left: 1.15rem;
}

@media (max-width: 1100px) {
  .wf-builder {
    grid-template-columns: 1fr;
  }

  .wf-builder__palette,
  .wf-builder__side {
    border: 0;
    border-top: 1px solid var(--bs-border-color);
  }

  .wf-builder__palette {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  }

  .wf-builder__palette-title {
    grid-column: 1 / -1;
  }
}

/* ===== Interactive How-to tour ===== */
.howto-toggle-btn {
  border: 0;
  background: transparent;
  cursor: pointer;
}

.howto-toggle-btn.active,
.howto-toggle-btn[aria-pressed="true"] {
  color: var(--emts-blue-600);
  font-weight: 600;
}

.howto-tour-bar {
  position: fixed;
  z-index: 1080;
  left: 1rem;
  right: 1rem;
  bottom: 1rem;
  max-width: 42rem;
  margin-inline: auto;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
  align-items: flex-end;
  justify-content: space-between;
  padding: 0.85rem 1rem;
  border-radius: 0.75rem;
  border: 1px solid var(--bs-border-color);
  background: var(--bs-body-bg);
  box-shadow: 0 10px 30px rgba(15, 45, 74, 0.18);
}

.howto-tour-bar__meta {
  font-size: 0.75rem;
  color: var(--muted);
  margin-bottom: 0.15rem;
}

.howto-tour-bar__title {
  font-weight: 700;
  margin-bottom: 0.15rem;
}

.howto-tour-bar__desc {
  font-size: 0.9rem;
  color: var(--muted);
  max-width: 28rem;
}

.howto-tour-bar__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

@media (max-width: 576px) {
  .howto-tour-bar {
    left: 0.5rem;
    right: 0.5rem;
    bottom: 0.5rem;
  }
}