/* ========= Base Theme ========= */
html {
  font-size: 14px;
  position: relative;
  min-height: 100%;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

body {
  margin: 0;
  margin-bottom: 60px;
  background: #f4f7fb;
  color: #1f2937;
  font-family: "Segoe UI", "Inter", system-ui, -apple-system, sans-serif;
  overflow-x: hidden;
}

a {
  text-decoration: none;
}

a:focus-visible,
.btn:focus-visible,
.nav-link:focus-visible,
.form-control:focus-visible,
.form-select:focus-visible,
.accordion-button:focus-visible {
  outline: 3px solid #1d4ed8;
  outline-offset: 2px;
  box-shadow: none !important;
}

.app-shell {
  padding-top: 0.5rem;
  padding-bottom: 1.5rem;
}

.app-page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.app-page-header h1,
.app-page-header h2 {
  margin: 0;
}

/* ========= Navbar ========= */
.app-navbar {
  background: linear-gradient(135deg, #0f172a, #1e3a8a);
  border-bottom: 0;
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.25);
}

.app-navbar .navbar-brand {
  color: #f8fafc;
  font-weight: 700;
  letter-spacing: 0.2px;
  max-width: min(100%, 28rem);
}

.app-navbar .navbar-brand-text {
  font-size: 0.95rem;
  line-height: 1.2;
  white-space: normal;
}

.platform-logo {
  display: inline-block;
  height: auto;
  object-fit: contain;
}

.platform-logo--nav {
  height: 44px;
  width: auto;
  background: #fff;
  border-radius: 0.5rem;
  padding: 0.15rem;
}

.platform-logo--auth,
.platform-logo--hero {
  width: min(170px, 45vw);
  height: auto;
}

.platform-logo--page {
  width: min(150px, 42vw);
  height: auto;
  flex-shrink: 0;
}

@media (max-width: 575.98px) {
  .platform-logo--nav {
    height: 40px;
  }

  .platform-logo--auth,
  .platform-logo--hero,
  .platform-logo--page {
    width: min(140px, 55vw);
  }
}

.app-navbar .nav-link {
  color: rgba(248, 250, 252, 0.9) !important;
  font-weight: 500;
  border-radius: 0.5rem;
  padding: 0.45rem 0.7rem !important;
}

.app-navbar .nav-link:hover,
.app-navbar .nav-link:focus {
  color: #fff !important;
  background: rgba(255, 255, 255, 0.12);
}

.app-navbar .navbar-toggler {
  border-color: rgba(255, 255, 255, 0.25);
}

.app-navbar .navbar-toggler-icon {
  filter: invert(1);
}

.navbar-user-tools {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.navbar-user-tools > .navbar-nav {
  align-items: center;
}

.language-switcher {
  flex: 0 0 auto;
}

.language-switcher .form-select {
  min-width: 7.5rem;
  border-color: rgba(255, 255, 255, 0.28);
  background-color: rgba(255, 255, 255, 0.1);
  color: #fff;
}

.language-switcher .form-select option {
  color: #111827;
  background: #fff;
}

/* ========= Cards, Alerts, Badges ========= */
.card,
.app-card {
  border: 1px solid #e5e7eb;
  border-radius: 0.85rem;
  box-shadow: 0 6px 16px rgba(15, 23, 42, 0.05);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.app-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.08);
  border-color: #d1d9e6;
}

.card-header {
  background: #f8fafc;
  border-bottom: 1px solid #e5e7eb;
  font-weight: 600;
}

.alert {
  border-radius: 0.75rem;
}

.badge {
  font-weight: 600;
}

/* ========= Forms ========= */
form .form-control,
form .form-select {
  border-radius: 0.65rem;
  border-color: #cfd8e3;
}

form .form-control:focus,
form .form-select:focus {
  border-color: #3b82f6;
  box-shadow: 0 0 0 0.2rem rgba(59, 130, 246, 0.15);
}

form .form-label {
  font-weight: 600;
  color: #374151;
}

.text-danger {
  font-size: 0.9rem;
}

/* ========= Buttons ========= */
.btn {
  border-radius: 0.65rem;
  font-weight: 600;
  transition: all 0.2s ease;
}

.btn-primary {
  background: #2563eb;
  border-color: #2563eb;
}

.btn-primary:hover,
.btn-primary:focus {
  background: #1d4ed8;
  border-color: #1d4ed8;
}

.btn-outline-primary:hover,
.btn-outline-secondary:hover,
.btn-outline-dark:hover,
.btn-outline-danger:hover {
  transform: translateY(-1px);
}

/* ========= Tables ========= */
.table {
  border-color: #e5e7eb;
}

.table thead th {
  font-weight: 700;
  color: #334155;
}

.table td,
.table th {
  vertical-align: middle;
}

/* ========= Learning Pages ========= */
.course-outline .accordion-button {
  font-weight: 600;
}

.learning-content {
  line-height: 1.75;
}

.learning-content img,
.learning-content video,
.learning-content iframe {
  max-width: 100%;
  height: auto;
}

.app-preserve-whitespace {
  white-space: pre-wrap;
}

/* ========= Footer ========= */
.footer {
  background: #fff;
}

/* ========= Utilities ========= */
.app-muted {
  color: #64748b !important;
}

.text-muted {
  color: #4b5563 !important;
}

.app-section-spacer {
  margin-bottom: 1.25rem;
}

.app-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.app-table-actions {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.app-empty-state {
  border: 1px dashed #cbd5e1;
  border-radius: 0.75rem;
  background: #f8fafc;
  padding: 1rem;
  text-align: center;
  color: #64748b;
}

.dashboard-stat-card .fs-2 {
  line-height: 1.15;
  color: #0f172a;
}

.dashboard-stat-card .small {
  line-height: 1.35;
}

/* ========= Home landing ========= */
.home-landing {
  max-width: 100%;
  margin: -0.5rem -0.15rem 0;
}

.home-eyebrow {
  display: inline-block;
  color: #93c5fd;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.home-eyebrow--dark {
  color: #2563eb;
}

.home-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-radius: 1.25rem;
  background: linear-gradient(145deg, #0b1224 0%, #132a63 42%, #1d4ed8 100%);
  color: #f8fafc;
  margin-bottom: 2.5rem;
}

.home-hero-glow {
  position: absolute;
  border-radius: 999px;
  filter: blur(40px);
  opacity: 0.45;
  pointer-events: none;
}

.home-hero-glow--one {
  width: 16rem;
  height: 16rem;
  top: -4rem;
  right: -2rem;
  background: #60a5fa;
}

.home-hero-glow--two {
  width: 12rem;
  height: 12rem;
  bottom: -3rem;
  left: 10%;
  background: #818cf8;
}

.home-hero-inner {
  position: relative;
  z-index: 1;
  padding: 2.5rem 1.35rem;
}

@media (min-width: 992px) {
  .home-hero-inner {
    padding: 4rem 2.75rem;
  }
}

.home-hero-title {
  font-size: clamp(2rem, 4.8vw, 3.15rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: #fff;
}

.home-hero-subtitle {
  font-size: clamp(1rem, 2.2vw, 1.15rem);
  line-height: 1.7;
  color: #dbeafe;
  max-width: 38rem;
}

.home-hero-actions,
.home-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.home-btn-primary {
  font-weight: 700;
  color: #1e3a8a;
}

.home-hero-actions .btn-outline-light {
  border-color: rgba(255, 255, 255, 0.55);
}

.home-hero-actions .btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #fff;
  color: #fff;
}

.home-hero-mockup {
  max-width: 100%;
}

.home-mockup-card {
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid rgba(255, 255, 255, 0.65);
  border-radius: 1rem;
  box-shadow: 0 24px 48px rgba(15, 23, 42, 0.28);
  overflow: hidden;
}

.home-mockup-header {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.85rem 1rem;
  background: #f8fafc;
  border-bottom: 1px solid #e5e7eb;
}

.home-mockup-dot {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 999px;
  background: #cbd5e1;
}

.home-mockup-dot:first-child { background: #f87171; }
.home-mockup-dot:nth-child(2) { background: #fbbf24; }
.home-mockup-dot:nth-child(3) { background: #34d399; }

.home-mockup-label {
  margin-left: auto;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #64748b;
}

.home-mockup-body {
  padding: 1rem;
  color: #0f172a;
}

.home-mockup-block + .home-mockup-block {
  margin-top: 1rem;
}

.home-mockup-block-title {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #64748b;
  margin-bottom: 0.55rem;
}

.home-mockup-module-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.home-mockup-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  background: #f1f5f9;
  color: #475569;
  font-size: 0.8rem;
  font-weight: 600;
}

.home-mockup-pill--active {
  background: #dbeafe;
  color: #1d4ed8;
}

.home-mockup-progress-track {
  height: 0.55rem;
  border-radius: 999px;
  background: #e2e8f0;
  overflow: hidden;
}

.home-mockup-progress-fill {
  width: 68%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #2563eb, #38bdf8);
}

.home-mockup-meta {
  margin-top: 0.45rem;
  font-size: 0.8rem;
  color: #64748b;
}

.home-mockup-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.55rem;
  margin-top: 1rem;
}

.home-mockup-tile {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  min-width: 0;
  padding: 0.65rem;
  border-radius: 0.75rem;
  border: 1px solid #e5e7eb;
  background: #fff;
}

.home-mockup-tile--accent {
  background: linear-gradient(180deg, #f5f3ff 0%, #fff 100%);
  border-color: #ddd6fe;
}

.home-mockup-tile-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.65rem;
  height: 1.65rem;
  border-radius: 0.45rem;
  background: #eff6ff;
  color: #1d4ed8;
  font-size: 0.68rem;
  font-weight: 800;
}

.home-mockup-tile-label {
  font-size: 0.78rem;
  font-weight: 700;
  color: #0f172a;
  line-height: 1.2;
}

.home-mockup-tile .badge {
  align-self: flex-start;
  font-size: 0.62rem;
}

.home-section {
  margin-bottom: 2.75rem;
}

.home-section--soft {
  background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
  border: 1px solid #e8eef7;
  border-radius: 1.15rem;
  padding: 1.5rem 1.15rem;
}

@media (min-width: 768px) {
  .home-section--soft {
    padding: 2rem 1.75rem;
  }
}

.home-section-inner {
  max-width: 100%;
}

.home-section-head {
  max-width: 42rem;
}

.home-section-head.text-center {
  margin-left: auto;
  margin-right: auto;
}

.home-section-title {
  font-size: clamp(1.45rem, 3vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #0f172a;
  line-height: 1.2;
}

.home-section-lead {
  font-size: 1.02rem;
  line-height: 1.65;
  color: #64748b;
}

.home-section-lead--center {
  max-width: 38rem;
  margin-left: auto;
  margin-right: auto;
}

.home-research-highlight {
  height: 100%;
  padding: 1.15rem 1.25rem;
  border-radius: 0.9rem;
  border: 1px solid #dbeafe;
  background: #fff;
  box-shadow: 0 10px 24px rgba(37, 99, 235, 0.08);
}

.home-feature-card,
.home-role-card {
  height: 100%;
  padding: 1.35rem 1.25rem;
  border-radius: 1rem;
  border: 1px solid #e5e7eb;
  background: #fff;
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.04);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.home-feature-card:hover,
.home-role-card:hover {
  transform: translateY(-3px);
  border-color: #cbd5e1;
  box-shadow: 0 14px 28px rgba(15, 23, 42, 0.08);
}

.home-feature-card--highlight {
  border-color: #c4b5fd;
  background: linear-gradient(180deg, #faf5ff 0%, #ffffff 100%);
}

.home-feature-card h3,
.home-role-card h3 {
  margin-bottom: 0.45rem;
  color: #0f172a;
  font-weight: 700;
}

.home-feature-card p,
.home-role-card p {
  font-size: 0.92rem;
  line-height: 1.55;
  color: #64748b;
}

.home-feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.6rem;
  height: 2.6rem;
  margin-bottom: 0.85rem;
  border-radius: 0.75rem;
  background: #2563eb;
  color: #fff;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.home-feature-icon--teal { background: #0d9488; }
.home-feature-icon--green { background: #059669; }
.home-feature-icon--cyan { background: #0891b2; }
.home-feature-icon--slate { background: #475569; }
.home-feature-icon--amber { background: #d97706; }
.home-feature-icon--violet { background: #7c3aed; }

.home-flow-timeline {
  display: grid;
  gap: 0.85rem;
}

@media (min-width: 992px) {
  .home-flow-timeline {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 1rem;
  }
}

.home-flow-timeline-item {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  height: 100%;
  padding: 1rem;
  border-radius: 0.9rem;
  border: 1px solid #e5e7eb;
  background: #fff;
}

.home-flow-timeline-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 999px;
  background: #2563eb;
  color: #fff;
  font-size: 0.85rem;
  font-weight: 800;
}

.home-flow-timeline-item h3 {
  color: #0f172a;
  font-weight: 700;
}

.home-flow-timeline-item p {
  font-size: 0.88rem;
  line-height: 1.5;
  color: #64748b;
}

.home-role-tag {
  display: inline-block;
  margin-bottom: 0.75rem;
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  background: #dbeafe;
  color: #1d4ed8;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.home-role-tag--indigo { background: #e0e7ff; color: #4338ca; }
.home-role-tag--teal { background: #ccfbf1; color: #0f766e; }
.home-role-tag--slate { background: #e2e8f0; color: #334155; }

.home-cta {
  border-radius: 1.15rem;
  background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 55%, #2563eb 100%);
  color: #f8fafc;
  margin-bottom: 0.5rem;
}

.home-cta-inner {
  padding: 2.5rem 1.35rem;
}

@media (min-width: 768px) {
  .home-cta-inner {
    padding: 3rem 2rem;
  }
}

.home-cta-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  color: #fff;
}

.home-cta-text {
  max-width: 36rem;
  margin-left: auto;
  margin-right: auto;
  color: #dbeafe;
  line-height: 1.65;
}

.home-cta .btn-outline-light {
  border-color: rgba(255, 255, 255, 0.55);
}

.home-cta .btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #fff;
  color: #fff;
}

/* ========= Dashboard ========= */
.dashboard-page {
  max-width: 100%;
}

.dashboard-page-header {
  margin-bottom: 1.25rem;
}

.dashboard-stat-label {
  color: #64748b;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 0.35rem;
}

.dashboard-stat-value {
  font-size: 2rem;
  font-weight: 800;
  line-height: 1.1;
  color: #0f172a;
}

.dashboard-stat-suffix {
  font-size: 1.1rem;
  font-weight: 600;
  color: #64748b;
}

.dashboard-stat-hint {
  margin-top: 0.45rem;
  font-size: 0.85rem;
  color: #64748b;
  line-height: 1.4;
}

.dashboard-stat-card {
  border-left: 4px solid #2563eb;
}

.dashboard-stat-card--blue {
  border-left-color: #2563eb;
}

.dashboard-stat-card--indigo {
  border-left-color: #4f46e5;
}

.dashboard-stat-card--teal {
  border-left-color: #0d9488;
}

.dashboard-stat-card--slate {
  border-left-color: #475569;
}

.dashboard-stat-card--amber {
  border-left-color: #d97706;
}

.dashboard-panel .card-header,
.dashboard-info-card .card-header {
  font-weight: 700;
}

.dashboard-course-list {
  margin: -0.25rem 0 0;
}

.dashboard-course-item {
  padding-left: 0;
  padding-right: 0;
  border-left: 0;
  border-right: 0;
}

.dashboard-course-item-main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.dashboard-text-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2rem;
  height: 2rem;
  padding: 0 0.45rem;
  margin-bottom: 0.5rem;
  border-radius: 0.55rem;
  background: #eff6ff;
  color: #1d4ed8;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.03em;
}

.dashboard-chart-card .card-body {
  min-height: 16rem;
}

.dashboard-chart-wrap {
  position: relative;
  height: 14rem;
  max-width: 100%;
}

.dashboard-chart-canvas {
  max-width: 100%;
}

.dashboard-chart-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 10rem;
  padding: 1rem;
  border: 1px dashed #cbd5e1;
  border-radius: 0.75rem;
  background: #f8fafc;
  color: #64748b;
  text-align: center;
}

.dashboard-stat-card .fs-2 {
  line-height: 1.15;
  color: #0f172a;
}

.app-progress {
  min-width: 220px;
  height: 10px;
}

/* Course learning path (Details) */
.learning-path-stack {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.learning-path-module-card {
  border-left: 4px solid #2563eb;
}

.learning-path-module-body {
  padding-top: 0.25rem;
}

.learning-path-lesson-row {
  border: 1px solid #e5e7eb;
  border-radius: 0.5rem;
  background: #fff;
}

.learning-path-quiz {
  border: 1px dashed #93c5fd;
  background: #eff6ff;
  border-radius: 0.5rem;
}

.learning-path-quiz-item:last-child {
  margin-bottom: 0 !important;
  padding-bottom: 0 !important;
  border-bottom: none !important;
}

.learning-path-assignment {
  border: 1px solid #e5e7eb;
  border-radius: 0.5rem;
  background: #fafafa;
}

.learning-path-assignment-item:last-child {
  margin-bottom: 0 !important;
  padding-bottom: 0 !important;
  border-bottom: none !important;
}

.learning-path-final {
  border-left: 4px solid #0f766e;
}

.learning-path-header .app-progress {
  max-width: 100%;
}

.app-progress-module {
  max-width: 28rem;
}

/* Assessment & quiz UI */
.app-table-actions-heading {
  min-width: 10rem;
}

.assessment-submissions-card .table th,
.assessment-submissions-card .table td,
.assessment-filter-card .table th,
.assessment-filter-card .table td {
  white-space: normal;
}

.quiz-manage-qtext {
  max-width: 42rem;
  word-break: break-word;
  white-space: normal;
}

.quiz-manage-add-card .quiz-manage-section h3 {
  font-size: 1rem;
}

.quiz-take-option {
  padding: 0.35rem 0;
}

.quiz-take-question-card .card-header {
  border-bottom: 1px solid #e5e7eb;
}

.quiz-result-card .display-6 {
  font-size: 1.85rem;
}

.quiz-result-detail-card-wrong .quiz-result-detail-header-wrong {
  background-color: #fef2f2;
  border-bottom: 1px solid rgba(220, 38, 38, 0.2);
}

.quiz-result-detail-list .card-body {
  padding: 1rem 1.15rem;
}

@media (max-width: 767.98px) {
  .quiz-result-summary-card .card-body {
    padding: 1rem;
  }
}

@media (min-width: 576px) {
  .quiz-result-card .display-6 {
    font-size: 2.35rem;
  }
}

.assessment-assignment-brief .card-header {
  border-bottom: 1px solid #e5e7eb;
}

/* ========= Course discussions ========= */
.discussion-filter-card {
  background: #fff;
}

.discussion-filter-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.discussion-question-list,
.discussion-answer-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.discussion-question-card,
.discussion-answer-card,
.discussion-detail-card,
.discussion-form-card {
  overflow: hidden;
}

.discussion-question-card h2 a {
  color: #0f172a;
}

.discussion-question-card h2 a:hover {
  color: #1d4ed8;
}

.discussion-body-preview,
.discussion-content {
  overflow-wrap: anywhere;
  word-break: break-word;
}

.discussion-content {
  white-space: pre-wrap;
  line-height: 1.7;
}

.discussion-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  color: #64748b;
  font-size: 0.85rem;
}

.discussion-counts {
  display: flex;
  flex: 0 0 auto;
  gap: 0.75rem;
  padding: 0.65rem 0.85rem;
  border: 1px solid #e5e7eb;
  border-radius: 0.75rem;
  background: #f8fafc;
  color: #64748b;
  font-size: 0.85rem;
}

.discussion-answer-card--accepted {
  border-color: #86efac;
  border-left: 4px solid #16a34a;
  background: linear-gradient(90deg, #f0fdf4 0, #fff 20%);
}

.discussion-answer-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.75rem;
}

.discussion-answer-actions form,
.discussion-detail-card form {
  margin: 0;
}

.discussion-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  color: #64748b;
  font-size: 0.85rem;
}

.discussion-empty-state {
  padding: 2rem 1rem;
}

.discussion-related-card .list-group-item {
  overflow-wrap: anywhere;
}

.discussion-toggle-filters,
.discussion-card-side {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
}

.discussion-card-side {
  flex: 0 0 auto;
  flex-direction: column;
  align-items: stretch;
}

.discussion-course-picker {
  max-width: 54rem;
  margin-inline: auto;
}

.qa-summary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
}

.qa-summary-grid--four {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.qa-summary-grid--two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.qa-summary-grid--six {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.qa-summary-grid > div {
  min-width: 0;
  padding: 1rem;
  border: 1px solid #e2e8f0;
  border-radius: 0.8rem;
  background: #f8fafc;
}

.qa-summary-grid span,
.qa-summary-grid strong {
  display: block;
}

.qa-summary-grid span {
  color: #64748b;
  font-size: 0.85rem;
}

.qa-summary-grid strong {
  margin-top: 0.25rem;
  color: #0f172a;
  font-size: 1.5rem;
}

.home-collaboration-card {
  border-color: #bae6fd;
  background: linear-gradient(135deg, #f0f9ff 0%, #ffffff 70%);
}

/* ========= Responsive Polish ========= */
@media (max-width: 991.98px) {
  .app-page-header {
    flex-direction: column;
    align-items: stretch;
  }

  .app-page-header > div:last-child {
    width: 100%;
  }

  .app-page-header .btn,
  .app-page-header .app-actions .btn {
    width: 100%;
  }
}

@media (max-width: 767.98px) {
  .container,
  .container-fluid {
    padding-left: 0.85rem;
    padding-right: 0.85rem;
  }

  .app-shell {
    padding-top: 0.25rem;
    padding-bottom: 1rem;
  }

  .card .card-body {
    padding: 1rem;
  }

  .table-responsive {
    border: 1px solid #e5e7eb;
    border-radius: 0.75rem;
    background: #fff;
  }

  .table td,
  .table th {
    white-space: nowrap;
  }

  .app-actions,
  .app-table-actions {
    width: 100%;
  }

  .app-actions .btn,
  .app-table-actions .btn,
  .app-table-actions .form-select,
  .app-table-actions form {
    width: 100%;
  }

  .navbar .navbar-collapse {
    margin-top: 0.6rem;
    padding: 0.6rem;
    border-radius: 0.65rem;
    background: rgba(255, 255, 255, 0.08);
  }

  .navbar .navbar-nav {
    gap: 0.25rem;
  }

  .learning-content {
    line-height: 1.65;
    font-size: 1rem;
  }

  .discussion-counts {
    width: 100%;
    justify-content: space-between;
  }

  .discussion-card-side {
    width: 100%;
  }

  .qa-summary-grid,
  .qa-summary-grid--four,
  .qa-summary-grid--six,
  .qa-summary-grid--two {
    grid-template-columns: 1fr;
  }

  .discussion-filter-tabs .btn,
  .discussion-answer-actions .btn,
  .discussion-answer-actions form {
    width: 100%;
  }

  .dashboard-chart-wrap {
    height: 12rem;
  }

  .home-hero-actions .btn,
  .home-cta-actions .btn {
    width: 100%;
  }

  .home-mockup-grid {
    grid-template-columns: 1fr;
  }

  .home-landing {
    margin-left: 0;
    margin-right: 0;
  }

  .navbar-user-tools {
    align-items: stretch;
    flex-direction: column;
  }

  .navbar-user-tools > .navbar-nav {
    align-items: stretch;
  }

  .language-switcher .form-select {
    width: 100%;
  }
}

/* ========= Right-to-left localization ========= */
[dir="rtl"] body {
  text-align: right;
  font-family: "Segoe UI", Tahoma, Arial, sans-serif;
}

[dir="rtl"] .navbar-brand,
[dir="rtl"] .navbar-nav,
[dir="rtl"] .navbar-user-tools,
[dir="rtl"] .app-actions,
[dir="rtl"] .app-table-actions,
[dir="rtl"] .dashboard-course-item-main,
[dir="rtl"] .home-hero-actions,
[dir="rtl"] .home-cta-actions {
  direction: rtl;
}

[dir="rtl"] .navbar-nav {
  padding-right: 0;
}

[dir="rtl"] .navbar-user-tools {
  margin-right: auto;
  margin-left: 0;
}

[dir="rtl"] .language-switcher .form-select {
  background-position: left 0.75rem center;
  padding-right: 0.75rem;
  padding-left: 2rem;
}

[dir="rtl"] .form-control,
[dir="rtl"] .form-select,
[dir="rtl"] textarea {
  text-align: right;
}

[dir="rtl"] .form-check {
  padding-right: 1.5em;
  padding-left: 0;
}

[dir="rtl"] .form-check .form-check-input {
  float: right;
  margin-right: -1.5em;
  margin-left: 0;
}

[dir="rtl"] .table,
[dir="rtl"] .table-responsive {
  direction: rtl;
  text-align: right;
}

[dir="rtl"] .learning-path-module-card,
[dir="rtl"] .learning-path-final,
[dir="rtl"] .dashboard-stat-card {
  border-left-width: 1px;
  border-right-width: 4px;
}

[dir="rtl"] .home-mockup-label {
  margin-right: auto;
  margin-left: 0;
}

[dir="rtl"] .home-flow-timeline,
[dir="rtl"] .home-mockup-grid,
[dir="rtl"] .row {
  direction: rtl;
}

[dir="rtl"] .home-mockup-progress-fill {
  margin-right: 0;
  margin-left: auto;
}

[dir="rtl"] .discussion-answer-card--accepted {
  border-right: 4px solid #16a34a;
  border-left-width: 1px;
  background: linear-gradient(270deg, #f0fdf4 0, #fff 20%);
}

[dir="rtl"] .discussion-meta,
[dir="rtl"] .discussion-counts,
[dir="rtl"] .discussion-answer-actions,
[dir="rtl"] .discussion-toggle-filters,
[dir="rtl"] .discussion-breadcrumb {
  direction: rtl;
}

[dir="rtl"] .ms-1,
[dir="rtl"] .ms-2,
[dir="rtl"] .ms-3,
[dir="rtl"] .ms-4,
[dir="rtl"] .ms-5 {
  margin-left: 0 !important;
  margin-right: var(--bs-gutter-x, 0.5rem) !important;
}

[dir="rtl"] .me-1,
[dir="rtl"] .me-2,
[dir="rtl"] .me-3,
[dir="rtl"] .me-4,
[dir="rtl"] .me-5 {
  margin-right: 0 !important;
  margin-left: var(--bs-gutter-x, 0.5rem) !important;
}

@media (max-width: 767.98px) {
  [dir="rtl"] .navbar-user-tools {
    margin: 0;
  }
}

.ai-suggestion-card {
  border-color: #93c5fd;
}

.ai-suggestion-card__header {
  background: linear-gradient(90deg, #eff6ff 0%, #f8fafc 55%);
  border-bottom: 1px solid #bfdbfe;
}

[dir="rtl"] .ai-suggestion-card__header {
  background: linear-gradient(270deg, #eff6ff 0%, #f8fafc 55%);
}

.ai-suggestion-card .learning-content {
  white-space: pre-wrap;
  word-break: break-word;
}

@media (max-width: 575.98px) {
  .ai-suggestion-card__header {
    align-items: flex-start !important;
  }
}

.ai-history-table th,
.ai-history-table td {
  vertical-align: middle;
}

.ai-history-details {
  word-break: break-word;
}

.ai-history-details .learning-content {
  white-space: pre-wrap;
}

.qa-analytics-table th,
.qa-analytics-table td {
  vertical-align: middle;
}

.ai-insight-card {
  border-color: #93c5fd;
}

.ai-insight-card__header {
  background: linear-gradient(90deg, #eff6ff 0%, #f8fafc 55%);
  border-bottom: 1px solid #bfdbfe;
}

[dir="rtl"] .ai-insight-card__header {
  background: linear-gradient(270deg, #eff6ff 0%, #f8fafc 55%);
}

.ai-insight-card .learning-content {
  white-space: pre-wrap;
  word-break: break-word;
}

.report-card {
  border-color: #cbd5e1;
}

.report-card .h5 {
  margin-bottom: 0.5rem;
}

.report-filter-panel .form-label {
  font-size: 0.85rem;
  margin-bottom: 0.25rem;
}

.report-table th,
.report-table td {
  vertical-align: middle;
}

/* Admin AI Course Content Builder */

.ai-course-builder-card {
  border-color: #bfdbfe;
}

.ai-course-builder-card > .card-header {
  background: linear-gradient(90deg, #eff6ff, #f8fafc);
  font-weight: 600;
}

[dir="rtl"] .ai-course-builder-card > .card-header {
  background: linear-gradient(270deg, #eff6ff, #f8fafc);
}

.ai-course-builder-accordion .accordion-item {
  border-color: #cbd5e1;
  overflow: hidden;
}

.ai-course-builder-accordion .accordion-button {
  font-weight: 600;
  overflow-wrap: anywhere;
}

.ai-course-builder-lesson-card {
  border-color: #dbeafe;
  max-width: 100%;
  overflow: hidden;
}

.ai-course-builder-lesson-card > .card-header {
  background-color: #f8fafc;
  font-weight: 600;
  overflow-wrap: anywhere;
}

.ai-draft-textarea {
  line-height: 1.65;
  min-height: 7rem;
  resize: vertical;
}

.ai-course-builder-accordion [dir="rtl"] .form-control,
.ai-course-builder-card[dir="rtl"] .form-control {
  direction: rtl;
  text-align: right;
}

@media (max-width: 575.98px) {
  .ai-course-builder-accordion .accordion-body,
  .ai-course-builder-lesson-card > .card-body {
    padding: 0.85rem;
  }
}

/* Lesson reading view: direction-aware, card-based lesson content */

.lesson-reading-container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1rem;
  max-width: 100%;
}

.lesson-info-card.rtl,
.lesson-header-card.rtl,
.lesson-section-card.rtl {
  direction: rtl;
  text-align: right;
}

.lesson-info-card.ltr,
.lesson-header-card.ltr,
.lesson-section-card.ltr {
  direction: ltr;
  text-align: left;
}

.lesson-section-card {
  margin-bottom: 0;
  border-color: #dbe3ef;
}

.lesson-section-card > .card-body {
  padding: 1.25rem 1.5rem;
}

.lesson-section-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: #1e3a8a;
  margin: 0 0 0.85rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid #e5e7eb;
}

.lesson-subsection-title {
  font-size: 1rem;
  font-weight: 600;
  color: #334155;
  margin: 1.15rem 0 0.5rem;
}

.lesson-subsection-title:first-child {
  margin-top: 0;
}

.lesson-content-body {
  font-size: 1.02rem;
  line-height: 1.8;
  color: #22303f;
  overflow-wrap: break-word;
  word-break: break-word;
  max-width: 100%;
}

.lesson-content-body.rtl {
  direction: rtl;
  text-align: right;
}

.lesson-content-body.ltr {
  direction: ltr;
  text-align: left;
}

.lesson-content-body p {
  margin: 0 0 0.85rem;
}

.lesson-content-body p:last-child {
  margin-bottom: 0;
}

.lesson-content-body ul {
  margin: 0 0 0.9rem;
  padding-inline-start: 1.5rem;
  list-style-position: outside;
}

.lesson-content-body ul:last-child {
  margin-bottom: 0;
}

.lesson-content-body li {
  margin-bottom: 0.4rem;
  line-height: 1.75;
}

.lesson-content-body li:last-child {
  margin-bottom: 0;
}

.lesson-note-card {
  border-color: #fcd34d;
  background-color: #fffbeb;
}

.lesson-note-card .lesson-section-title {
  color: #92400e;
  border-bottom-color: #fde68a;
}

.lesson-note-card .lesson-content-body {
  color: #4b3a12;
}

.lesson-editor-field.rtl,
.lesson-editor-hint.rtl {
  direction: rtl;
  text-align: right;
}

.lesson-editor-field.ltr,
.lesson-editor-hint.ltr {
  direction: ltr;
  text-align: left;
}

textarea.lesson-editor-field {
  line-height: 1.75;
  font-size: 0.98rem;
}

@media (max-width: 575.98px) {
  .lesson-section-card > .card-body {
    padding: 1rem;
  }

  .lesson-section-title {
    font-size: 1.05rem;
  }

  .lesson-content-body {
    font-size: 0.98rem;
    line-height: 1.75;
  }
}

/* ========= Certificate Design ========= */
.certificate-page {
  --cert-navy: #0f2744;
  --cert-teal: #1a8a86;
  --cert-purple: #5b3a8c;
  --cert-gold: #c9a227;
  --cert-gold-light: #e8d48b;
  max-width: 1100px;
  margin: 0 auto 2rem;
}

.certificate-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.certificate-sheet {
  direction: ltr;
  background: #fff;
  color: var(--cert-navy);
  border-radius: 4px;
  box-shadow: 0 12px 32px rgba(15, 39, 68, 0.12);
}

.certificate-frame {
  position: relative;
  overflow: hidden;
  padding: 1.35rem 1.6rem 1.1rem;
  border: 7px solid var(--cert-navy);
  outline: 2px solid var(--cert-gold);
  outline-offset: -12px;
  background-color: #fffef9;
  background-image:
    linear-gradient(rgba(255, 254, 249, 0.92), rgba(255, 254, 249, 0.92)),
    url("/images/platform-logo.png");
  background-repeat: no-repeat, repeat;
  background-size: cover, 160px;
  background-position: center, center;
  min-height: 680px;
}

.certificate-ornament {
  position: absolute;
  width: 78px;
  height: 78px;
  pointer-events: none;
  z-index: 1;
}

.certificate-ornament::before,
.certificate-ornament::after {
  content: "";
  position: absolute;
  border-color: var(--cert-gold);
  border-style: solid;
}

.certificate-ornament::before {
  width: 56px;
  height: 56px;
  border-width: 3px 0 0 3px;
}

.certificate-ornament::after {
  width: 22px;
  height: 22px;
  background:
    radial-gradient(circle at 30% 30%, var(--cert-gold-light), var(--cert-gold) 55%, transparent 56%),
    radial-gradient(circle at 70% 70%, transparent 40%, var(--cert-teal) 41% 52%, transparent 53%);
}

.certificate-ornament--tl { top: 10px; left: 10px; }
.certificate-ornament--tl::before { top: 8px; left: 8px; }
.certificate-ornament--tl::after { top: 18px; left: 18px; }

.certificate-ornament--tr { top: 10px; right: 10px; transform: scaleX(-1); }
.certificate-ornament--tr::before { top: 8px; left: 8px; }
.certificate-ornament--tr::after { top: 18px; left: 18px; }

.certificate-ornament--bl { bottom: 10px; left: 10px; transform: scaleY(-1); }
.certificate-ornament--bl::before { top: 8px; left: 8px; }
.certificate-ornament--bl::after { top: 18px; left: 18px; }

.certificate-ornament--br { bottom: 10px; right: 10px; transform: scale(-1); }
.certificate-ornament--br::before { top: 8px; left: 8px; }
.certificate-ornament--br::after { top: 18px; left: 18px; }

.certificate-header {
  display: grid;
  grid-template-columns: 1fr 150px 1fr;
  gap: 0.75rem;
  align-items: center;
  margin: 0.35rem 0.4rem 0.55rem;
}

.certificate-header-en,
.certificate-header-ar {
  min-width: 0;
}

.certificate-header-en {
  text-align: left;
}

.certificate-header-ar {
  text-align: right;
}

.certificate-header-logo {
  display: flex;
  justify-content: center;
}

.certificate-logo {
  width: 132px;
  height: auto;
  object-fit: contain;
  background: #fff;
  border-radius: 0.6rem;
  padding: 0.2rem;
}

.certificate-title-en,
.certificate-title-ar,
.certificate-awarded,
.certificate-tagline,
.certificate-presented,
.certificate-recipient,
.certificate-course-lead,
.certificate-course,
.certificate-statement p,
.certificate-info-label,
.certificate-info-label-ar,
.certificate-info-value,
.certificate-sign-label {
  margin: 0;
}

.certificate-title-en {
  display: flex;
  flex-direction: column;
  gap: 0.05rem;
}

.certificate-title-en-main {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.55rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--cert-navy);
  line-height: 1.1;
  text-transform: uppercase;
}

.certificate-title-en-sub {
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--cert-teal);
  text-transform: uppercase;
}

.certificate-title-ar {
  font-family: "Segoe UI", Tahoma, "Traditional Arabic", serif;
  font-size: 1.7rem;
  font-weight: 800;
  color: var(--cert-navy);
  line-height: 1.25;
}

.certificate-awarded {
  margin-top: 0.35rem;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--cert-navy);
}

.certificate-tagline {
  margin-top: 0.12rem;
  font-size: 0.68rem;
  color: var(--cert-teal);
  font-style: italic;
}

.certificate-presented {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin: 0.35rem 1.5rem 0.2rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cert-navy);
}

.certificate-presented::before,
.certificate-presented::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cert-gold), transparent);
}

.certificate-recipient {
  text-align: center;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.55rem, 3vw, 2.15rem);
  font-weight: 700;
  color: var(--cert-navy);
  line-height: 1.2;
  margin: 0.15rem 1rem 0.35rem;
}

.certificate-course-lead {
  display: flex;
  justify-content: center;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.35rem 0.7rem;
  text-align: center;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--cert-teal);
  margin: 0 1rem 0.25rem;
}

.certificate-course {
  text-align: center;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.15rem, 2.2vw, 1.55rem);
  font-weight: 700;
  color: var(--cert-purple);
  margin: 0 1rem 0.2rem;
}

.certificate-flourish {
  width: 88px;
  height: 10px;
  margin: 0.2rem auto 0.55rem;
  background:
    radial-gradient(circle at center, var(--cert-gold) 0 2px, transparent 3px) 50% 50% / 14px 10px no-repeat,
    linear-gradient(90deg, transparent, var(--cert-gold), transparent);
  background-size: 18px 10px, 100% 1px;
  background-position: center, center;
  background-repeat: no-repeat;
}

.certificate-statement {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.1rem;
  align-items: start;
  margin: 0 1.4rem 0.85rem;
}

.certificate-statement-en,
.certificate-statement-ar {
  font-size: 0.78rem;
  line-height: 1.55;
  color: var(--cert-navy);
}

.certificate-statement-en {
  text-align: left;
  padding-right: 1.1rem;
  border-right: 1px solid var(--cert-gold);
}

.certificate-statement-ar {
  text-align: right;
}

.certificate-info-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.65rem;
  margin: 0 1.1rem 0.85rem;
}

.certificate-info-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.12rem;
  padding: 0.55rem 0.4rem 0.65rem;
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(201, 162, 39, 0.45);
  border-radius: 0.55rem;
  box-shadow: 0 2px 8px rgba(15, 39, 68, 0.06);
}

.certificate-info-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  margin-bottom: 0.1rem;
  color: var(--cert-gold);
  background: var(--cert-navy);
  border-radius: 50%;
}

.certificate-info-label,
.certificate-info-label-ar {
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--cert-navy);
}

.certificate-info-label-ar {
  text-transform: none;
  letter-spacing: 0;
  color: var(--cert-teal);
}

.certificate-info-value {
  margin-top: 0.15rem;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--cert-navy);
  word-break: break-word;
}

.certificate-info-value--code {
  font-family: Consolas, "Courier New", monospace;
  font-size: 0.78rem;
}

.certificate-signatures {
  display: grid;
  grid-template-columns: 1fr 120px 1fr;
  align-items: end;
  gap: 0.5rem;
  margin: 0.15rem 1.4rem 0.15rem;
  min-height: 108px;
}

.certificate-sign {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-bottom: 0.35rem;
}

.certificate-sign-line {
  width: min(180px, 80%);
  border-top: 1px solid var(--cert-navy);
  margin-bottom: 0.35rem;
}

.certificate-sign-label {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--cert-navy);
}

.certificate-seal {
  width: 108px;
  height: 108px;
  margin: 0 auto;
  display: grid;
  place-items: center;
  background: repeating-conic-gradient(from 8deg, #b8881a 0 8deg, #f3d77a 8deg 16deg);
  border-radius: 50%;
  box-shadow: 0 4px 10px rgba(15, 39, 68, 0.18);
}

.certificate-seal-inner {
  width: 78px;
  height: 78px;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 35%, #fff6d4, #e8c547 70%, #b8881a);
  border: 2px solid var(--cert-navy);
  display: grid;
  place-items: center;
  padding: 0.35rem;
  text-align: center;
  font-size: 0.52rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  line-height: 1.2;
  color: var(--cert-navy);
}

@media (max-width: 900px) {
  .certificate-header {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .certificate-header-en,
  .certificate-header-ar {
    text-align: center;
  }

  .certificate-info-row {
    grid-template-columns: 1fr 1fr;
  }

  .certificate-statement {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }

  .certificate-statement-en,
  .certificate-statement-ar {
    grid-column: 1;
    text-align: center;
    border: 0;
    padding: 0;
  }

  .certificate-signatures {
    grid-template-columns: 1fr;
    justify-items: center;
  }
}

@media print {
  @page {
    size: A4 landscape;
    margin: 10mm;
  }

  html,
  body {
    background: #fff !important;
    margin: 0 !important;
    padding: 0 !important;
    height: auto !important;
  }

  header,
  footer,
  .no-print,
  .navbar,
  .app-navbar,
  .language-switcher,
  #culture-select {
    display: none !important;
  }

  .app-shell,
  .container,
  main {
    max-width: none !important;
    width: 100% !important;
    margin: 0 !important;
    padding: 0 !important;
  }

  .certificate-page {
    max-width: none;
    margin: 0;
  }

  .certificate-sheet {
    box-shadow: none !important;
    border-radius: 0;
    width: 100%;
    page-break-inside: avoid;
    break-inside: avoid;
  }

  .certificate-frame {
    min-height: 0;
    height: calc(210mm - 20mm);
    padding: 10mm 12mm 8mm;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }

  .certificate-logo {
    width: 118px;
  }
}