/* ============================================================
   ACADEMY.CSS — Ayinedjimi Consultants Academy
   Design tokens: dark theme, accent rouge/violet/orange
   Police: Inter (préchargée), code: Fira Code / JetBrains Mono
   ============================================================ */

/* ----------------------------------------
   VARIABLES CSS
   ---------------------------------------- */
:root {
  --aca-bg:            #0c111d;
  --aca-surface:       #111827;
  --aca-surface2:      #1f2937;
  --aca-border:        #374151;
  --aca-border-subtle: #1e293b;
  --aca-header-bg:     #080c18;
  --aca-footer-bg:     #080c18;

  --aca-text:          #d1d5db;
  --aca-text-strong:   #e5e7eb;
  --aca-text-muted:    #9ca3af;
  --aca-text-faint:    #6b7280;

  --aca-red:           #ef4444;
  --aca-red-light:     #f87171;
  --aca-red-bg:        rgba(239, 68, 68, 0.10);
  --aca-red-border:    rgba(239, 68, 68, 0.25);

  --aca-violet:        #8b5cf6;
  --aca-violet-dark:   #7c3aed;
  --aca-violet-light:  #a78bfa;
  --aca-violet-pale:   #c4b5fd;
  --aca-violet-bg:     rgba(139, 92, 246, 0.10);
  --aca-violet-border: rgba(139, 92, 246, 0.25);

  --aca-orange:        #fb923c;
  --aca-orange-bg:     rgba(251, 146, 60, 0.10);
  --aca-orange-border: rgba(251, 146, 60, 0.25);

  --aca-green:         #4ade80;
  --aca-green-bg:      rgba(74, 222, 128, 0.10);
  --aca-green-border:  rgba(74, 222, 128, 0.25);

  --aca-yellow:        #facc15;
  --aca-yellow-bg:     rgba(250, 204, 21, 0.10);
  --aca-yellow-border: rgba(250, 204, 21, 0.25);

  --aca-hero-gradient: linear-gradient(135deg, #1e1b4b 0%, #0f172a 50%, #1e1b4b 100%);
  --aca-prog-gradient: linear-gradient(90deg, #7c3aed, #a78bfa);
  --aca-read-gradient: linear-gradient(90deg, #ef4444, #fb923c);

  --aca-radius:        0.75rem;
  --aca-radius-sm:     0.5rem;
  --aca-radius-full:   9999px;

  --aca-transition:    0.2s ease;
  --aca-sidebar-w:     17rem;
  --aca-toc-w:         16rem;
  --aca-header-h:      60px;

  --aca-font-code:     'Fira Code', 'JetBrains Mono', 'Cascadia Code', monospace;
}

/* ============================================================
   RESET / BASE pour le contexte Academy
   ============================================================ */
.aca-scope * {
  box-sizing: border-box;
}

/* ============================================================
   HEADER ACADEMY LÉGER
   ============================================================ */
.aca-header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--aca-header-h);
  background: var(--aca-header-bg);
  border-bottom: 1px solid rgba(30, 41, 59, 0.60);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.aca-header-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  height: 60px;
}

.aca-back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  color: var(--aca-text-muted);
  font-size: 0.8125rem;
  text-decoration: none;
  transition: color var(--aca-transition);
  white-space: nowrap;
  flex-shrink: 0;
}

.aca-back-link:hover {
  color: var(--aca-text-strong);
}

.aca-back-link::before {
  content: '←';
  font-size: 0.875rem;
}

/* Séparateur vertical entre back-link et badge */
.aca-header-sep {
  width: 1px;
  height: 24px;
  background: var(--aca-border-subtle);
  flex-shrink: 0;
}

/* Badge "Academy" pill violet */
.aca-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.25rem 0.75rem;
  border-radius: var(--aca-radius-full);
  background: var(--aca-violet-bg);
  border: 1px solid var(--aca-violet-border);
  color: var(--aca-violet-light);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  flex-shrink: 0;
}

.aca-badge i,
.aca-badge svg {
  font-size: 0.625rem;
}

/* Titre formation dans le header (breadcrumb) */
.aca-header-title {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--aca-text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
}

/* Barre de recherche dans le header (hub) */
.aca-search {
  position: relative;
  flex: 1;
  max-width: 360px;
  margin-left: auto;
}

.aca-search input {
  width: 100%;
  background: var(--aca-surface);
  border: 1px solid var(--aca-border);
  border-radius: var(--aca-radius-full);
  color: var(--aca-text-strong);
  font-size: 0.8125rem;
  padding: 0.5rem 1rem 0.5rem 2.5rem;
  outline: none;
  transition: border-color var(--aca-transition), box-shadow var(--aca-transition);
}

.aca-search input::placeholder {
  color: var(--aca-text-faint);
}

.aca-search input:focus {
  border-color: var(--aca-violet);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.15);
}

.aca-search-icon {
  position: absolute;
  left: 0.875rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--aca-text-faint);
  font-size: 0.75rem;
  pointer-events: none;
}

/* Nav actions header (boutons connexion, etc.) */
.aca-header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
  margin-left: auto;
}

/* ============================================================
   FOOTER ACADEMY LÉGER
   ============================================================ */
.aca-footer {
  background: var(--aca-footer-bg);
  border-top: 1px solid var(--aca-border-subtle);
  padding: 2rem 1.5rem;
}

.aca-footer-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.aca-footer-copy {
  font-size: 0.8125rem;
  color: var(--aca-text-faint);
}

.aca-footer-links {
  display: flex;
  gap: 1.25rem;
}

.aca-footer-links a {
  font-size: 0.8125rem;
  color: var(--aca-text-muted);
  text-decoration: none;
  transition: color var(--aca-transition);
}

.aca-footer-links a:hover {
  color: var(--aca-text-strong);
}

/* ============================================================
   HUB — PAGE CATALOGUE /academy
   ============================================================ */
.aca-hub {
  min-height: 100vh;
  background: var(--aca-bg);
  color: var(--aca-text);
}

/* Hero formation active */
.aca-hero-active {
  background: var(--aca-hero-gradient);
  padding: 4rem 2rem;
  border-radius: 1.5rem;
  margin: 2rem 0;
  position: relative;
  overflow: hidden;
}

.aca-hero-active::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 50%, rgba(139, 92, 246, 0.15) 0%, transparent 60%);
  pointer-events: none;
}

.aca-hero-active::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 40%;
  height: 200%;
  background: radial-gradient(ellipse, rgba(239, 68, 68, 0.08) 0%, transparent 60%);
  pointer-events: none;
}

.aca-hero-active-inner {
  position: relative;
  z-index: 1;
  max-width: 720px;
}

.aca-hero-eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--aca-violet-light);
  margin-bottom: 0.75rem;
}

.aca-hero-active h1 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  color: var(--aca-text-strong);
  line-height: 1.25;
  margin: 0 0 1rem;
}

.aca-hero-active p {
  font-size: 1rem;
  color: var(--aca-text-muted);
  line-height: 1.7;
  margin: 0 0 1.75rem;
}

.aca-hero-meta {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
  margin-bottom: 1.75rem;
}

.aca-hero-meta-item {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.8125rem;
  color: var(--aca-text-muted);
}

.aca-hero-meta-item i {
  color: var(--aca-violet-light);
  font-size: 0.75rem;
}

/* CTA du hero */
.aca-btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--aca-radius-full);
  background: var(--aca-red);
  color: #fff;
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: background var(--aca-transition), transform var(--aca-transition), box-shadow var(--aca-transition);
}

.aca-btn-primary:hover {
  background: var(--aca-red-light);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(239, 68, 68, 0.35);
}

.aca-btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--aca-radius-full);
  background: transparent;
  color: var(--aca-text);
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
  border: 1px solid var(--aca-border);
  cursor: pointer;
  transition: border-color var(--aca-transition), color var(--aca-transition), background var(--aca-transition);
}

.aca-btn-ghost:hover {
  border-color: var(--aca-violet);
  color: var(--aca-violet-light);
  background: var(--aca-violet-bg);
}

/* Chips de filtre */
.aca-filters {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  padding: 1.5rem 0 1rem;
}

.aca-filters-label {
  font-size: 0.8125rem;
  color: var(--aca-text-muted);
  font-weight: 500;
  margin-right: 0.25rem;
}

.aca-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.375rem 1rem;
  border-radius: var(--aca-radius-full);
  border: 1px solid var(--aca-border);
  background: transparent;
  color: var(--aca-text-muted);
  font-size: 0.8125rem;
  font-weight: 500;
  cursor: pointer;
  transition: color var(--aca-transition), border-color var(--aca-transition), background var(--aca-transition);
  user-select: none;
}

.aca-chip:hover {
  color: var(--aca-text-strong);
  border-color: var(--aca-border);
  background: var(--aca-surface2);
}

.aca-chip.active {
  color: var(--aca-red);
  border-color: var(--aca-red);
  background: var(--aca-red-bg);
}

.aca-chip-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

/* Grille de formations */
.aca-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
  padding-bottom: 4rem;
}

/* Cartes de formations */
.aca-card {
  background: var(--aca-surface);
  border: 1px solid var(--aca-border-subtle);
  border-radius: 1rem;
  overflow: hidden;
  transition: border-color var(--aca-transition), transform var(--aca-transition), box-shadow var(--aca-transition);
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  position: relative;
}

.aca-card:hover {
  border-color: var(--aca-violet);
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35), 0 0 0 1px rgba(139, 92, 246, 0.15);
}

.aca-card.locked {
  opacity: 0.55;
  filter: saturate(0.5);
  cursor: not-allowed;
}

.aca-card.locked:hover {
  transform: none;
  border-color: var(--aca-border-subtle);
  box-shadow: none;
}

/* Image / bannière de la carte */
.aca-card-thumb {
  position: relative;
  height: 160px;
  background: var(--aca-hero-gradient);
  overflow: hidden;
  flex-shrink: 0;
}

.aca-card-thumb-icon {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.5rem;
  opacity: 0.25;
}

.aca-card-lock {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--aca-text-muted);
  font-size: 0.875rem;
}

/* Corps de la carte */
.aca-card-body {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  flex: 1;
}

.aca-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
}

.aca-card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--aca-text-strong);
  line-height: 1.35;
  margin: 0;
}

.aca-card-desc {
  font-size: 0.8125rem;
  color: var(--aca-text-muted);
  line-height: 1.6;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.aca-card-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.aca-card-meta-item {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.75rem;
  color: var(--aca-text-faint);
}

.aca-card-meta-item i {
  font-size: 0.625rem;
}

.aca-card-footer {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--aca-border-subtle);
}

/* Badge niveau */
.aca-level-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2rem 0.625rem;
  border-radius: var(--aca-radius-full);
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.aca-badge-debutant {
  color: var(--aca-green);
  background: var(--aca-green-bg);
  border: 1px solid var(--aca-green-border);
}

.aca-badge-inter {
  color: var(--aca-yellow);
  background: var(--aca-yellow-bg);
  border: 1px solid var(--aca-yellow-border);
}

.aca-badge-avance {
  color: var(--aca-red);
  background: var(--aca-red-bg);
  border: 1px solid var(--aca-red-border);
}

/* Barre de progression mini (sur les cartes) */
.aca-progress-mini {
  height: 3px;
  background: var(--aca-border-subtle);
  border-radius: var(--aca-radius-full);
  overflow: hidden;
  margin-top: 0.25rem;
}

.aca-progress-mini-fill {
  height: 100%;
  background: var(--aca-prog-gradient);
  transition: width 0.5s ease;
  border-radius: var(--aca-radius-full);
}

.aca-progress-label {
  font-size: 0.6875rem;
  color: var(--aca-text-faint);
  white-space: nowrap;
}

/* Section "À venir" repliable */
.aca-coming-section {
  margin-top: 3rem;
  border-top: 1px solid var(--aca-border-subtle);
  padding-top: 2rem;
}

.aca-coming-toggle {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--aca-surface2);
  border: 1px solid var(--aca-border);
  border-radius: var(--aca-radius);
  color: var(--aca-text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  text-align: left;
  transition: background var(--aca-transition), color var(--aca-transition);
}

.aca-coming-toggle:hover {
  background: var(--aca-surface);
  color: var(--aca-text-strong);
}

.aca-coming-toggle-icon {
  margin-left: auto;
  transition: transform 0.25s ease;
}

.aca-coming-toggle[aria-expanded="true"] .aca-coming-toggle-icon {
  transform: rotate(180deg);
}

.aca-coming-content {
  padding: 1.5rem 0 0;
}

/* Titre de section Hub */
.aca-section-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--aca-text-strong);
  margin: 0 0 1.5rem;
}

/* Stats du hub */
.aca-stats-bar {
  display: flex;
  gap: 2rem;
  padding: 1.25rem 1.5rem;
  background: var(--aca-surface);
  border: 1px solid var(--aca-border-subtle);
  border-radius: var(--aca-radius);
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.aca-stat {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.aca-stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--aca-text-strong);
  line-height: 1;
}

.aca-stat-label {
  font-size: 0.75rem;
  color: var(--aca-text-faint);
}

/* ============================================================
   LAYOUT PLAYER — PAGE COURS
   ============================================================ */
.aca-layout {
  display: flex;
  min-height: calc(100vh - var(--aca-header-h));
  background: var(--aca-bg);
}

/* ----------------------------------------
   SIDEBAR GAUCHE
   ---------------------------------------- */
.aca-sidebar {
  width: var(--aca-sidebar-w);
  flex-shrink: 0;
  background: var(--aca-header-bg);
  border-right: 1px solid var(--aca-border-subtle);
  position: sticky;
  top: var(--aca-header-h);
  height: calc(100vh - var(--aca-header-h));
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  scrollbar-width: thin;
  scrollbar-color: var(--aca-border) transparent;
}

.aca-sidebar::-webkit-scrollbar {
  width: 4px;
}

.aca-sidebar::-webkit-scrollbar-track {
  background: transparent;
}

.aca-sidebar::-webkit-scrollbar-thumb {
  background: var(--aca-border);
  border-radius: 2px;
}

/* En-tête de la sidebar */
.aca-sidebar-header {
  padding: 1.25rem 1rem 0.875rem;
  border-bottom: 1px solid var(--aca-border-subtle);
  flex-shrink: 0;
}

.aca-sidebar-course-title {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--aca-text-strong);
  line-height: 1.4;
  margin: 0 0 0.625rem;
}

/* Barre de progression globale dans la sidebar */
.aca-progress-sidebar {
  margin-top: 0.5rem;
}

.aca-progress-sidebar-track {
  height: 4px;
  background: var(--aca-border-subtle);
  border-radius: var(--aca-radius-full);
  overflow: hidden;
  margin-bottom: 0.375rem;
}

.aca-progress-sidebar-fill {
  height: 100%;
  background: var(--aca-prog-gradient);
  border-radius: var(--aca-radius-full);
  transition: width 0.6s ease;
}

.aca-progress-sidebar-label {
  font-size: 0.6875rem;
  color: var(--aca-text-faint);
}

/* Liste des chapitres */
.aca-ch-list {
  padding: 0.5rem 0;
  flex: 1;
}

.aca-ch-section {
  padding: 0.5rem 1rem 0.25rem;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--aca-text-faint);
  border-top: 1px solid var(--aca-border-subtle);
  margin-top: 0.5rem;
}

.aca-ch-section:first-child {
  border-top: none;
  margin-top: 0;
}

/* Lien de chapitre */
.aca-ch-link {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.625rem 1rem 0.625rem 1.25rem;
  font-size: 0.8125rem;
  color: var(--aca-text-muted);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color var(--aca-transition), background var(--aca-transition), border-color var(--aca-transition);
  line-height: 1.4;
  position: relative;
}

.aca-ch-link:hover {
  color: var(--aca-text-strong);
  background: rgba(255, 255, 255, 0.03);
}

.aca-ch-link.active {
  border-left-color: var(--aca-violet-dark);
  color: var(--aca-violet-pale);
  background: rgba(124, 58, 237, 0.10);
  font-weight: 500;
}

.aca-ch-link-text {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Icônes d'état des chapitres */
.aca-ch-state {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.6875rem;
}

/* Coche verte quand chapitre terminé */
.aca-ch-done {
  color: var(--aca-green);
  font-size: 0.75rem;
}

/* Étoile violette quand quiz réussi (>= 80%) */
.aca-ch-quiz {
  color: var(--aca-violet-light);
  font-size: 0.6875rem;
}

/* Numéro de chapitre */
.aca-ch-num {
  font-size: 0.6875rem;
  color: var(--aca-text-faint);
  font-variant-numeric: tabular-nums;
  flex-shrink: 0;
  min-width: 1.25rem;
}

/* Pied de sidebar */
.aca-sidebar-footer {
  padding: 0.875rem 1rem;
  border-top: 1px solid var(--aca-border-subtle);
  flex-shrink: 0;
}

/* ----------------------------------------
   ZONE ARTICLE PRINCIPALE
   ---------------------------------------- */
.aca-main {
  flex: 1;
  min-width: 0;
  max-width: 860px;
  margin: 0 auto;
  padding: 2.5rem 2rem 4rem;
}

/* En-tête de chapitre */
.aca-chapter-header {
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--aca-border-subtle);
}

.aca-chapter-eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--aca-violet-light);
  margin-bottom: 0.625rem;
}

.aca-chapter-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--aca-text-strong);
  line-height: 1.25;
  margin: 0 0 0.875rem;
}

.aca-chapter-meta {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.aca-chapter-meta-item {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.8125rem;
  color: var(--aca-text-faint);
}

/* ----------------------------------------
   TYPOGRAPHY DU CONTENU .ap
   (Étend les styles .ap existants sans les recréer)
   ---------------------------------------- */
.aca-content,
.ap {
  color: var(--aca-text);
  line-height: 1.8;
  font-size: 1rem;
}

.aca-content h2,
.ap h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--aca-text-strong);
  margin: 2.5rem 0 1rem;
  line-height: 1.3;
}

.aca-content h3,
.ap h3 {
  font-size: 1.1875rem;
  font-weight: 600;
  color: var(--aca-text-strong);
  margin: 2rem 0 0.75rem;
  line-height: 1.35;
}

.aca-content h4,
.ap h4 {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--aca-text);
  margin: 1.5rem 0 0.5rem;
}

.aca-content p,
.ap p {
  margin: 0 0 1.25rem;
}

.aca-content ul,
.aca-content ol,
.ap ul,
.ap ol {
  margin: 0.75rem 0 1.5rem 1.5rem;
}

.aca-content li,
.ap li {
  margin-bottom: 0.5rem;
}

.aca-content code,
.ap code {
  font-family: var(--aca-font-code);
  font-size: 0.875em;
  background: rgba(139, 92, 246, 0.12);
  color: var(--aca-violet-pale);
  padding: 0.125em 0.4em;
  border-radius: 0.25rem;
  border: 1px solid rgba(139, 92, 246, 0.20);
}

.aca-content pre,
.ap pre {
  background: #0d1117;
  border: 1px solid var(--aca-border-subtle);
  border-radius: var(--aca-radius);
  overflow-x: auto;
  padding: 1.25rem 1.5rem;
  margin: 1.75rem 0;
  position: relative;
  line-height: 1.6;
}

.aca-content pre code,
.ap pre code {
  background: transparent;
  color: #e2e8f0;
  padding: 0;
  border: none;
  font-size: 0.875rem;
  border-radius: 0;
}

.aca-content blockquote,
.ap blockquote {
  border-left: 3px solid var(--aca-violet);
  padding: 0.75rem 1.25rem;
  margin: 1.75rem 0;
  background: var(--aca-violet-bg);
  border-radius: 0 var(--aca-radius-sm) var(--aca-radius-sm) 0;
  color: var(--aca-text-muted);
  font-style: italic;
}

.aca-content strong,
.ap strong {
  color: var(--aca-text-strong);
  font-weight: 600;
}

.aca-content a,
.ap a {
  color: var(--aca-violet-light);
  text-decoration: underline;
  text-decoration-color: rgba(139, 92, 246, 0.35);
  transition: color var(--aca-transition);
}

.aca-content a:hover,
.ap a:hover {
  color: var(--aca-violet-pale);
  text-decoration-color: var(--aca-violet-light);
}

/* ----------------------------------------
   CALLOUTS AUTOMATIQUES
   ---------------------------------------- */
.aca-callout-note {
  background: rgba(139, 92, 246, 0.08);
  border-left: 3px solid var(--aca-violet);
  border-radius: 0 var(--aca-radius) var(--aca-radius) 0;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  display: flex;
  gap: 0.875rem;
  align-items: flex-start;
}

.aca-callout-analogy {
  background: rgba(251, 146, 60, 0.08);
  border-left: 3px solid var(--aca-orange);
  border-radius: 0 var(--aca-radius) var(--aca-radius) 0;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  display: flex;
  gap: 0.875rem;
  align-items: flex-start;
}

.aca-callout-tip {
  background: rgba(74, 222, 128, 0.08);
  border-left: 3px solid var(--aca-green);
  border-radius: 0 var(--aca-radius) var(--aca-radius) 0;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  display: flex;
  gap: 0.875rem;
  align-items: flex-start;
}

.aca-callout-warn {
  background: rgba(250, 204, 21, 0.08);
  border-left: 3px solid var(--aca-yellow);
  border-radius: 0 var(--aca-radius) var(--aca-radius) 0;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  display: flex;
  gap: 0.875rem;
  align-items: flex-start;
}

.aca-callout-icon {
  font-size: 1.125rem;
  flex-shrink: 0;
  line-height: 1.6;
}

.aca-callout-body {
  flex: 1;
  min-width: 0;
}

.aca-callout-title {
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.375rem;
}

.aca-callout-note .aca-callout-title { color: var(--aca-violet-light); }
.aca-callout-analogy .aca-callout-title { color: var(--aca-orange); }
.aca-callout-tip .aca-callout-title { color: var(--aca-green); }
.aca-callout-warn .aca-callout-title { color: var(--aca-yellow); }

.aca-callout-body p:last-child {
  margin-bottom: 0;
}

/* ----------------------------------------
   TABLES ZEBRA
   ---------------------------------------- */
.aca-table-wrap {
  overflow-x: auto;
  border-radius: var(--aca-radius);
  border: 1px solid var(--aca-border-subtle);
  margin: 1.75rem 0;
}

.aca-table-wrap table,
.aca-content table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.aca-table-wrap th,
.aca-content table th {
  background: var(--aca-surface2);
  color: var(--aca-text-strong);
  font-weight: 600;
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--aca-border);
  white-space: nowrap;
}

.aca-table-wrap td,
.aca-content table td {
  padding: 0.75rem 1rem;
  color: var(--aca-text);
  border-bottom: 1px solid var(--aca-border-subtle);
  vertical-align: top;
}

.aca-table-wrap tr:last-child td {
  border-bottom: none;
}

.aca-table-wrap tr:nth-child(even) td {
  background: rgba(31, 41, 55, 0.40);
}

/* Colonnes Port / Protocole en monospace */
.aca-table-wrap td.col-port,
.aca-table-wrap td.col-proto {
  font-family: var(--aca-font-code);
  font-size: 0.8125rem;
  color: var(--aca-violet-pale);
}

/* ----------------------------------------
   QUIZ
   ---------------------------------------- */
.aca-quiz-wrap {
  background: var(--aca-surface);
  border: 1px solid var(--aca-border);
  border-radius: 1rem;
  padding: 2rem;
  margin: 2.5rem 0;
}

.aca-quiz-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.aca-quiz-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--aca-violet-bg);
  border: 1px solid var(--aca-violet-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--aca-violet-light);
  font-size: 1rem;
  flex-shrink: 0;
}

.aca-quiz-title {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--aca-text-strong);
  margin: 0;
}

.aca-quiz-subtitle {
  font-size: 0.8125rem;
  color: var(--aca-text-muted);
  margin: 0.125rem 0 0;
}

.aca-quiz-question {
  font-size: 1rem;
  font-weight: 500;
  color: var(--aca-text-strong);
  margin: 0 0 1.25rem;
  line-height: 1.55;
}

/* Boutons-carte QCM */
.aca-quiz-opt {
  display: flex;
  align-items: flex-start;
  gap: 0.875rem;
  width: 100%;
  padding: 0.875rem 1rem;
  background: var(--aca-surface2);
  border: 1px solid var(--aca-border);
  border-radius: var(--aca-radius-sm);
  color: var(--aca-text);
  font-size: 0.875rem;
  text-align: left;
  cursor: pointer;
  transition: background var(--aca-transition), border-color var(--aca-transition), color var(--aca-transition);
  margin-bottom: 0.625rem;
  line-height: 1.5;
}

.aca-quiz-opt:hover {
  background: rgba(139, 92, 246, 0.06);
  border-color: var(--aca-violet);
  color: var(--aca-text-strong);
}

.aca-quiz-opt:last-child {
  margin-bottom: 0;
}

.aca-quiz-opt-letter {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  min-width: 24px;
  border-radius: 50%;
  background: var(--aca-border);
  color: var(--aca-text-muted);
  font-size: 0.75rem;
  font-weight: 700;
  transition: background var(--aca-transition), color var(--aca-transition);
}

.aca-quiz-opt.correct {
  background: rgba(74, 222, 128, 0.10);
  border-color: var(--aca-green);
  color: var(--aca-green);
  cursor: default;
}

.aca-quiz-opt.correct .aca-quiz-opt-letter {
  background: var(--aca-green);
  color: #000;
}

.aca-quiz-opt.wrong {
  background: var(--aca-red-bg);
  border-color: var(--aca-red);
  color: var(--aca-red-light);
  cursor: default;
}

.aca-quiz-opt.wrong .aca-quiz-opt-letter {
  background: var(--aca-red);
  color: #fff;
}

.aca-quiz-opt.disabled {
  cursor: default;
  pointer-events: none;
}

/* Résultat du quiz */
.aca-quiz-result {
  margin-top: 1.5rem;
  padding: 1rem 1.25rem;
  border-radius: var(--aca-radius-sm);
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.875rem;
  line-height: 1.6;
}

.aca-quiz-result.pass {
  background: rgba(74, 222, 128, 0.08);
  border: 1px solid var(--aca-green-border);
  color: var(--aca-green);
}

.aca-quiz-result.fail {
  background: var(--aca-red-bg);
  border: 1px solid var(--aca-red-border);
  color: var(--aca-red-light);
}

.aca-quiz-score-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 3rem;
  height: 3rem;
  border-radius: 50%;
  font-size: 1rem;
  font-weight: 700;
  flex-shrink: 0;
}

.aca-quiz-result.pass .aca-quiz-score-badge {
  background: rgba(74, 222, 128, 0.15);
  color: var(--aca-green);
}

.aca-quiz-result.fail .aca-quiz-score-badge {
  background: var(--aca-red-bg);
  color: var(--aca-red-light);
}

/* ----------------------------------------
   BOUTON "MARQUER COMME TERMINÉ"
   ---------------------------------------- */
.aca-done-section {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--aca-border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.aca-done-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--aca-radius-full);
  background: transparent;
  border: 1px solid var(--aca-green-border);
  color: var(--aca-green);
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--aca-transition), box-shadow var(--aca-transition), transform var(--aca-transition);
}

.aca-done-btn:hover {
  background: var(--aca-green-bg);
  box-shadow: 0 4px 16px rgba(74, 222, 128, 0.20);
  transform: translateY(-1px);
}

.aca-done-btn.done {
  background: var(--aca-green-bg);
  border-color: var(--aca-green);
  cursor: default;
  transform: none;
  box-shadow: none;
}

.aca-done-btn.done:hover {
  transform: none;
}

/* Navigation entre chapitres */
.aca-chapter-nav {
  display: flex;
  gap: 1rem;
  justify-content: space-between;
  flex-wrap: wrap;
}

.aca-nav-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  border-radius: var(--aca-radius-sm);
  background: var(--aca-surface);
  border: 1px solid var(--aca-border);
  color: var(--aca-text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: color var(--aca-transition), border-color var(--aca-transition), background var(--aca-transition);
}

.aca-nav-btn:hover {
  color: var(--aca-text-strong);
  border-color: var(--aca-violet);
  background: var(--aca-violet-bg);
}

.aca-nav-btn.aca-nav-next {
  margin-left: auto;
  background: var(--aca-violet-bg);
  border-color: var(--aca-violet-border);
  color: var(--aca-violet-light);
}

.aca-nav-btn.aca-nav-next:hover {
  background: rgba(124, 58, 237, 0.18);
  border-color: var(--aca-violet);
  color: var(--aca-violet-pale);
}

/* ----------------------------------------
   TOC DROITE
   ---------------------------------------- */
.aca-toc-right {
  width: var(--aca-toc-w);
  flex-shrink: 0;
  position: sticky;
  top: var(--aca-header-h);
  height: calc(100vh - var(--aca-header-h));
  overflow-y: auto;
  padding: 1.5rem 1rem;
  border-left: 1px solid var(--aca-border-subtle);
  scrollbar-width: thin;
  scrollbar-color: var(--aca-border) transparent;
}

.aca-toc-right::-webkit-scrollbar {
  width: 4px;
}

.aca-toc-right::-webkit-scrollbar-thumb {
  background: var(--aca-border);
  border-radius: 2px;
}

.aca-toc-title {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--aca-text-faint);
  margin: 0 0 0.875rem;
}

.aca-toc-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.aca-toc-item {
  margin-bottom: 0.125rem;
}

.aca-toc-link {
  display: block;
  padding: 0.3rem 0.5rem;
  font-size: 0.8125rem;
  color: var(--aca-text-muted);
  text-decoration: none;
  border-radius: 0.25rem;
  line-height: 1.45;
  border-left: 2px solid transparent;
  padding-left: 0.625rem;
  transition: color var(--aca-transition), border-color var(--aca-transition), background var(--aca-transition);
}

.aca-toc-link:hover {
  color: var(--aca-text-strong);
  background: rgba(255, 255, 255, 0.03);
}

.aca-toc-link.active {
  color: var(--aca-orange);
  border-left-color: var(--aca-orange);
  background: rgba(251, 146, 60, 0.07);
}

.aca-toc-link-h3 {
  padding-left: 1.25rem;
  font-size: 0.75rem;
}

/* ----------------------------------------
   BARRE DE LECTURE
   ---------------------------------------- */
.aca-read-bar {
  position: fixed;
  top: var(--aca-header-h);
  left: 0;
  right: 0;
  height: 3px;
  z-index: 200;
  background: transparent;
  pointer-events: none;
}

.aca-read-bar-fill {
  height: 100%;
  width: 0%;
  background: var(--aca-read-gradient);
  transition: width 0.1s linear;
  border-radius: 0 2px 2px 0;
}

/* ----------------------------------------
   MOBILE — SIDEBAR OFFCANVAS
   ---------------------------------------- */
@media (max-width: 1023px) {
  .aca-sidebar {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 300;
    width: var(--aca-sidebar-w);
    max-width: 85vw;
  }

  .aca-sidebar.open {
    display: flex;
  }

  .aca-main {
    padding: 1.5rem 1rem 3rem;
  }

  .aca-chapter-title {
    font-size: 1.375rem;
  }
}

@media (max-width: 1279px) {
  .aca-toc-right {
    display: none;
  }
}

/* Mobile hamburger */
.aca-mobile-menu-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--aca-radius-sm);
  border: 1px solid var(--aca-border);
  background: var(--aca-surface);
  color: var(--aca-text-muted);
  font-size: 0.9375rem;
  cursor: pointer;
  flex-shrink: 0;
  transition: color var(--aca-transition), border-color var(--aca-transition);
}

.aca-mobile-menu-btn:hover {
  color: var(--aca-text-strong);
  border-color: var(--aca-violet);
}

@media (max-width: 1023px) {
  .aca-mobile-menu-btn {
    display: flex;
  }
}

/* Overlay mobile */
.aca-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.60);
  z-index: 250;
  display: none;
  backdrop-filter: blur(2px);
}

.aca-overlay.open {
  display: block;
}

/* ============================================================
   TOC MOBILE (bottom sheet / drawer)
   ============================================================ */
.aca-toc-mobile {
  display: none;
  margin: 1.5rem 0;
  background: var(--aca-surface);
  border: 1px solid var(--aca-border-subtle);
  border-radius: var(--aca-radius);
  overflow: hidden;
}

@media (max-width: 1279px) {
  .aca-toc-mobile {
    display: block;
  }
}

.aca-toc-mobile-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 0.875rem 1rem;
  background: transparent;
  border: none;
  color: var(--aca-text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: color var(--aca-transition);
}

.aca-toc-mobile-toggle:hover {
  color: var(--aca-text-strong);
}

.aca-toc-mobile-body {
  padding: 0 1rem 1rem;
  border-top: 1px solid var(--aca-border-subtle);
}

/* ============================================================
   UTILITAIRES DIVERS
   ============================================================ */
/* Skeleton loader pour les cartes en chargement */
.aca-skeleton {
  background: linear-gradient(90deg, var(--aca-surface2) 25%, rgba(55, 65, 81, 0.5) 50%, var(--aca-surface2) 75%);
  background-size: 200% 100%;
  animation: aca-shimmer 1.5s infinite;
  border-radius: 0.375rem;
}

@keyframes aca-shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Tag catégorie */
.aca-tag {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.625rem;
  border-radius: var(--aca-radius-full);
  background: var(--aca-surface2);
  border: 1px solid var(--aca-border-subtle);
  color: var(--aca-text-muted);
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Notice "connexion requise" */
.aca-login-notice {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1.25rem;
  background: var(--aca-red-bg);
  border: 1px solid var(--aca-red-border);
  border-radius: var(--aca-radius-sm);
  font-size: 0.875rem;
  color: var(--aca-red-light);
  margin: 1.5rem 0;
}

/* Pagination */
.aca-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 2rem 0;
}

.aca-page-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 0.5rem;
  border-radius: var(--aca-radius-sm);
  border: 1px solid var(--aca-border);
  background: transparent;
  color: var(--aca-text-muted);
  font-size: 0.875rem;
  cursor: pointer;
  transition: color var(--aca-transition), border-color var(--aca-transition), background var(--aca-transition);
  text-decoration: none;
}

.aca-page-btn:hover {
  color: var(--aca-text-strong);
  border-color: var(--aca-violet);
  background: var(--aca-violet-bg);
}

.aca-page-btn.active {
  background: var(--aca-violet-dark);
  border-color: var(--aca-violet-dark);
  color: #fff;
  cursor: default;
}

/* Empty state */
.aca-empty {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--aca-text-faint);
}

.aca-empty-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: 0.4;
}

.aca-empty-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--aca-text-muted);
  margin: 0 0 0.5rem;
}

.aca-empty-desc {
  font-size: 0.875rem;
  color: var(--aca-text-faint);
  margin: 0;
}

/* Toast notification */
.aca-toast {
  position: fixed;
  bottom: 2rem;
  right: 1.5rem;
  z-index: 500;
  padding: 0.75rem 1.25rem;
  border-radius: var(--aca-radius-sm);
  background: var(--aca-surface2);
  border: 1px solid var(--aca-border);
  color: var(--aca-text-strong);
  font-size: 0.875rem;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
  display: flex;
  align-items: center;
  gap: 0.625rem;
  max-width: 360px;
  animation: aca-toast-in 0.25s ease;
}

.aca-toast.success {
  border-color: var(--aca-green-border);
  color: var(--aca-green);
}

.aca-toast.error {
  border-color: var(--aca-red-border);
  color: var(--aca-red-light);
}

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

/* Container principal */
.aca-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Divider décoratif */
.aca-divider {
  height: 1px;
  background: var(--aca-border-subtle);
  margin: 2rem 0;
}

/* ============================================================
   RESPONSIVE — AJUSTEMENTS FINS
   ============================================================ */
@media (max-width: 640px) {
  .aca-header-inner {
    padding: 0 1rem;
    gap: 0.75rem;
  }

  .aca-search {
    display: none;
  }

  .aca-hero-active {
    padding: 2.5rem 1.25rem;
    border-radius: 1rem;
  }

  .aca-stats-bar {
    gap: 1rem;
  }

  .aca-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .aca-done-section {
    flex-direction: column;
    align-items: stretch;
  }

  .aca-done-btn {
    justify-content: center;
  }

  .aca-chapter-nav {
    flex-direction: column;
  }

  .aca-nav-btn.aca-nav-next {
    margin-left: 0;
  }

  .aca-quiz-wrap {
    padding: 1.25rem;
  }

  .aca-footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }
}

/* ================================================================
   SUPPLÉMENT — classes manquantes (alignement template ↔ CSS)
   ================================================================ */

/* ── Body Academy ── */
.aca-body { background:#0c111d; color:#d1d5db; }

/* ── Header brand / breadcrumb / search ── */
.aca-header-brand { display:flex; align-items:center; gap:.6rem; min-width:0; }
.aca-header-logo img { display:block; }
.aca-header-badge {
  display:inline-flex; align-items:center; gap:.4rem;
  font-size:.8125rem; font-weight:600; color:#a78bfa;
  background:rgba(124,58,237,.12); border:1px solid rgba(124,58,237,.25);
  border-radius:.5rem; padding:.25rem .625rem; text-decoration:none;
  transition:background .15s,border-color .15s;
}
.aca-header-badge:hover { background:rgba(124,58,237,.2); border-color:rgba(124,58,237,.4); }
.aca-hdr-icon { width:1rem; height:1rem; flex-shrink:0; }
.aca-header-breadcrumb {
  display:flex; align-items:center; gap:.375rem; flex-shrink:1; min-width:0;
  font-size:.8125rem; color:#6b7280; overflow:hidden;
}
.aca-bc-link { color:#9ca3af; text-decoration:none; white-space:nowrap; transition:color .15s; }
.aca-bc-link:hover { color:#a78bfa; }
.aca-bc-current { color:#d1d5db; font-weight:500; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.aca-search-btn {
  display:flex; align-items:center; justify-content:center;
  width:2rem; height:2rem; border-radius:.5rem; border:none; cursor:pointer;
  background:rgba(255,255,255,.06); color:#9ca3af;
  transition:background .15s,color .15s;
}
.aca-search-btn:hover { background:rgba(255,255,255,.1); color:#e2e8f0; }
.aca-search-dropdown {
  position:absolute; top:calc(100% + .5rem); right:0;
  width:22rem; background:#1a2234; border:1px solid #2d3f5a;
  border-radius:.875rem; padding:1rem; box-shadow:0 8px 32px rgba(0,0,0,.5); z-index:100;
}
.aca-search-input {
  width:100%; background:#0d1117; border:1px solid #2d3f5a;
  border-radius:.5rem; color:#e2e8f0; padding:.5rem .875rem;
  font-size:.875rem; outline:none;
}
.aca-search-input:focus { border-color:#7c3aed; }
.aca-search-hint { font-size:.75rem; color:#6b7280; margin:.5rem 0 0; }
.aca-search-go {
  display:block; margin-top:.625rem; text-align:center;
  color:#a78bfa; font-size:.8125rem; font-weight:600; text-decoration:none;
}
.aca-back-text { display:none; }
@media(min-width:768px){ .aca-back-text { display:inline; } }

/* ── Footer extras ── */
.aca-footer-brand { display:flex; flex-direction:column; gap:.5rem; }
.aca-footer-tagline { font-size:.75rem; color:#6b7280; margin:0; }
.aca-footer-nav { display:flex; flex-wrap:wrap; gap:.5rem 1.25rem; }
.aca-footer-link { font-size:.8125rem; color:#6b7280; text-decoration:none; transition:color .15s; }
.aca-footer-link:hover { color:#a78bfa; }

/* ── Hub Hero section ── */
.aca-hero-section {
  position:relative; overflow:hidden;
  background:linear-gradient(135deg,#0d0f1e 0%,#130c25 50%,#0d1117 100%);
  border-bottom:1px solid #1e293b;
  padding:3.5rem 1.5rem 3rem;
  display:flex; align-items:center; gap:3rem;
}
@media(min-width:1024px){ .aca-hero-section { padding:4.5rem 4rem 4rem; } }
.aca-hero-inner { flex:1; min-width:0; position:relative; z-index:1; }
.aca-hero-badge-row { display:flex; align-items:center; gap:.625rem; flex-wrap:wrap; margin-bottom:1.25rem; }
.aca-hero-badge-free {
  display:inline-flex; align-items:center; gap:.375rem;
  font-size:.75rem; font-weight:600; color:#4ade80;
  background:rgba(74,222,128,.1); border:1px solid rgba(74,222,128,.2);
  border-radius:9999px; padding:.25rem .75rem;
}
.aca-hero-title {
  font-size:clamp(1.75rem,4vw,2.75rem); font-weight:800;
  color:#f1f5f9; margin:0 0 1rem; line-height:1.15;
  background:linear-gradient(135deg,#f1f5f9,#a78bfa);
  -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text;
}
.aca-hero-desc { font-size:1.0625rem; color:#94a3b8; line-height:1.75; margin:0 0 1.5rem; max-width:56ch; }
.aca-hero-meta { display:flex; align-items:center; flex-wrap:wrap; gap:.5rem; margin-bottom:1.5rem; }
.aca-meta-item { display:inline-flex; align-items:center; gap:.375rem; font-size:.8125rem; color:#9ca3af; }
.aca-meta-item i { color:#7c3aed; font-size:.75rem; }
.aca-meta-sep { color:#374151; font-size:.75rem; }
.aca-hero-tags { display:flex; flex-wrap:wrap; gap:.375rem; margin-bottom:2rem; }
.aca-hero-progress-wrap { margin-bottom:1.5rem; }
.aca-hero-cta-row { display:flex; align-items:center; flex-wrap:wrap; gap:.75rem; }
.aca-cta-primary {
  display:inline-flex; align-items:center; gap:.5rem;
  background:linear-gradient(135deg,#7c3aed,#6d28d9); color:#fff;
  border-radius:.75rem; padding:.75rem 1.5rem; font-weight:700; font-size:.9375rem;
  text-decoration:none; transition:transform .15s,box-shadow .15s;
  box-shadow:0 4px 24px rgba(124,58,237,.35);
}
.aca-cta-primary:hover { transform:translateY(-2px); box-shadow:0 8px 32px rgba(124,58,237,.5); }
.aca-cta-resume {
  display:inline-flex; align-items:center; gap:.5rem;
  border:1.5px solid rgba(124,58,237,.4); color:#a78bfa;
  border-radius:.75rem; padding:.75rem 1.5rem; font-weight:600; font-size:.9375rem;
  text-decoration:none; transition:border-color .15s,background .15s;
}
.aca-cta-resume:hover { border-color:#7c3aed; background:rgba(124,58,237,.08); }
.aca-hero-cta-note { font-size:.75rem; color:#6b7280; display:flex; align-items:center; gap:.375rem; }
.aca-hero-deco {
  display:none; position:relative; width:18rem; height:18rem;
  flex-shrink:0; align-items:center; justify-content:center;
}
@media(min-width:1024px){ .aca-hero-deco { display:flex; } }
.aca-hero-deco-rings { position:absolute; inset:0; }
.aca-deco-ring {
  position:absolute; border-radius:9999px; border:1px solid rgba(124,58,237,.12);
  top:50%; left:50%; transform:translate(-50%,-50%);
}
.aca-deco-ring-1 { width:10rem; height:10rem; }
.aca-deco-ring-2 { width:14rem; height:14rem; animation:ring-pulse 3s ease-in-out infinite; }
.aca-deco-ring-3 { width:18rem; height:18rem; animation:ring-pulse 3s ease-in-out infinite .5s; }
@keyframes ring-pulse { 0%,100%{opacity:.3}50%{opacity:.7} }
.aca-hero-deco-icon { font-size:4rem; color:rgba(124,58,237,.25); position:relative; z-index:1; }

/* ── Filters section ── */
.aca-filters-section { padding:1.25rem 1.5rem; border-bottom:1px solid #1e293b; background:#0c111d; }
@media(min-width:1024px){ .aca-filters-section { padding:1.25rem 4rem; } }
.aca-filters-inner { display:flex; flex-wrap:wrap; gap:.875rem 2rem; }
.aca-filter-group { display:flex; align-items:center; flex-wrap:wrap; gap:.375rem; }
.aca-filter-label { font-size:.75rem; font-weight:600; color:#6b7280; text-transform:uppercase; letter-spacing:.04em; margin-right:.25rem; }
.aca-chip-active, .aca-chip.aca-chip-active {
  background:rgba(124,58,237,.18) !important;
  border-color:rgba(124,58,237,.5) !important;
  color:#c4b5fd !important;
}

/* ── Card extras ── */
.aca-card-glow {
  position:absolute; inset:0; border-radius:inherit; pointer-events:none; opacity:0;
  background:radial-gradient(circle at 50% 0,rgba(124,58,237,.15),transparent 70%);
  transition:opacity .3s;
}
.aca-card:hover .aca-card-glow { opacity:1; }
.aca-card-icon {
  width:2.75rem; height:2.75rem; border-radius:.75rem;
  background:rgba(124,58,237,.12); border:1px solid rgba(124,58,237,.2);
  display:flex; align-items:center; justify-content:center;
  font-size:1.125rem; color:#a78bfa; flex-shrink:0;
}
.aca-card-badges { display:flex; align-items:center; gap:.375rem; flex-wrap:wrap; margin-left:auto; }
.aca-card-locked .aca-card-icon { background:rgba(156,163,175,.08); border-color:rgba(156,163,175,.15); color:#6b7280; }
.aca-card-locked { opacity:.6; }
.aca-card-locked:hover { opacity:.7; transform:none !important; }
.aca-badge-level {
  display:inline-flex; align-items:center; gap:.3rem;
  font-size:.6875rem; font-weight:700; padding:.2rem .55rem;
  border-radius:.35rem; border:1px solid;
  text-transform:uppercase; letter-spacing:.04em;
}
.aca-badge-available {
  display:inline-flex; align-items:center; gap:.3rem;
  font-size:.6875rem; font-weight:700; padding:.2rem .55rem;
  border-radius:.35rem; border:1px solid rgba(74,222,128,.3);
  color:#4ade80; background:rgba(74,222,128,.08);
  text-transform:uppercase; letter-spacing:.04em;
}
.aca-badge-soon {
  display:inline-flex; align-items:center; gap:.3rem;
  font-size:.6875rem; font-weight:700; padding:.2rem .55rem;
  border-radius:.35rem; border:1px solid rgba(251,191,36,.3);
  color:#fbbf24; background:rgba(251,191,36,.08);
  text-transform:uppercase; letter-spacing:.04em;
}
.aca-card-cta {
  display:inline-flex; align-items:center; gap:.375rem;
  font-size:.8125rem; font-weight:700; color:#a78bfa;
  text-decoration:none; transition:color .15s,gap .15s;
}
.aca-card-cta:hover { color:#c4b5fd; gap:.625rem; }
.aca-card-resume {
  display:inline-flex; align-items:center; gap:.375rem;
  font-size:.8125rem; font-weight:700; color:#22d3ee;
  text-decoration:none; transition:color .15s;
}
.aca-card-tags { display:flex; flex-wrap:wrap; gap:.3rem; margin-bottom:.875rem; }
.aca-tag {
  font-size:.6875rem; font-weight:600; color:#7c3aed;
  background:rgba(124,58,237,.1); border:1px solid rgba(124,58,237,.15);
  border-radius:.35rem; padding:.15rem .5rem;
}
.aca-card-progress-wrap { margin-bottom:.75rem; }

/* ── Coming soon ── */
.aca-coming-details { border:none; }
.aca-coming-details summary { list-style:none; }
.aca-coming-details summary::-webkit-details-marker { display:none; }
.aca-coming-summary {
  display:flex; align-items:center; justify-content:space-between;
  cursor:pointer; user-select:none; padding:.875rem 1.25rem;
  background:#111827; border-radius:.75rem; border:1px solid #1e293b;
  transition:background .15s;
}
.aca-coming-summary:hover { background:#1a2234; }
.aca-coming-summary-inner { display:flex; align-items:center; gap:.625rem; font-weight:600; color:#9ca3af; font-size:.875rem; }
.aca-coming-count { font-size:.75rem; color:#6b7280; }
.aca-coming-chevron { color:#6b7280; transition:transform .2s; font-size:.75rem; flex-shrink:0; }
.aca-coming-details[open] .aca-coming-chevron { transform:rotate(180deg); }
.aca-coming-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(280px,1fr)); gap:1rem; margin-top:1.25rem; }

/* ── No results / SEO ── */
.aca-no-results { text-align:center; padding:3rem 1rem; color:#6b7280; }
.aca-no-results i { font-size:2rem; margin-bottom:.75rem; display:block; }
.aca-seo-section { padding:3rem 1.5rem 4rem; }
@media(min-width:1024px){ .aca-seo-section { padding:4rem 4rem 5rem; } }
.aca-seo-text { font-size:.875rem; color:#6b7280; line-height:1.8; margin-top:2rem; max-width:72ch; }
.aca-value-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(220px,1fr)); gap:1.25rem; }
.aca-value-card {
  background:#111827; border:1px solid #1e293b; border-radius:1rem; padding:1.5rem;
  transition:border-color .2s,transform .2s;
}
.aca-value-card:hover { border-color:rgba(124,58,237,.3); transform:translateY(-2px); }
.aca-value-card h3 { font-size:.9375rem; font-weight:700; color:#e2e8f0; margin:.875rem 0 .5rem; }
.aca-value-card p { font-size:.8125rem; color:#6b7280; line-height:1.7; margin:0; }
.aca-value-icon { width:2.5rem; height:2.5rem; border-radius:.75rem; display:flex; align-items:center; justify-content:center; font-size:1rem; }
.aca-section-inner { max-width:72rem; margin:0 auto; }
.aca-section-title { font-size:1.25rem; font-weight:700; color:#e2e8f0; display:flex; align-items:center; gap:.625rem; }
.aca-grid-section { padding:2.5rem 1.5rem; }
@media(min-width:1024px){ .aca-grid-section { padding:3rem 4rem; } }
.aca-coming-section { padding:0 1.5rem 2.5rem; }
@media(min-width:1024px){ .aca-coming-section { padding:0 4rem 3rem; } }

/* ── Mobile drawer ── */
.aca-drawer {
  position:fixed; top:0; left:0; bottom:0; z-index:200;
  width:17rem; background:#0d1117; border-right:1px solid #1e293b;
  display:flex; flex-direction:column; overflow:hidden;
  transform:translateX(-100%); transition:transform .25s cubic-bezier(.4,0,.2,1);
}
.aca-drawer.open { transform:translateX(0); }
.aca-drawer-header {
  display:flex; align-items:center; justify-content:space-between;
  padding:.875rem 1.125rem; border-bottom:1px solid #1e293b; flex-shrink:0;
}
.aca-drawer-title { font-size:.875rem; font-weight:700; color:#e2e8f0; }
.aca-drawer-close {
  width:1.75rem; height:1.75rem; border-radius:.375rem; border:none; cursor:pointer;
  background:rgba(255,255,255,.06); color:#9ca3af;
  display:flex; align-items:center; justify-content:center; font-size:.875rem;
  transition:background .15s;
}
.aca-drawer-close:hover { background:rgba(255,255,255,.12); color:#e2e8f0; }
.aca-drawer-progress { padding:.875rem 1.125rem; border-bottom:1px solid #1e293b; flex-shrink:0; }
.aca-drawer-nav { flex:1; overflow-y:auto; padding:.5rem; }

/* ── Sidebar extras ── */
.aca-sidebar-header { padding:1.125rem 1.125rem .875rem; border-bottom:1px solid #1e293b; }
.aca-sidebar-course-link { display:flex; align-items:center; gap:.75rem; text-decoration:none; }
.aca-sidebar-course-icon {
  width:2.5rem; height:2.5rem; border-radius:.625rem; flex-shrink:0;
  background:rgba(124,58,237,.15); border:1px solid rgba(124,58,237,.25);
  display:flex; align-items:center; justify-content:center; color:#a78bfa; font-size:1rem;
}
.aca-sidebar-course-info { min-width:0; }
.aca-sidebar-course-title { display:block; font-size:.8125rem; font-weight:700; color:#e2e8f0; line-height:1.3; }
.aca-sidebar-course-level { display:block; font-size:.6875rem; color:#7c3aed; font-weight:600; margin-top:.15rem; }
.aca-sidebar-progress { padding:.875rem 1.125rem; border-bottom:1px solid #1e293b; }
.aca-sidebar-nav { flex:1; overflow-y:auto; padding:.5rem; }
.aca-progress-sidebar { height:4px; background:#1e293b; border-radius:9999px; overflow:hidden; margin:.375rem 0; }
.aca-progress-sidebar-fill { height:100%; background:linear-gradient(90deg,#7c3aed,#a78bfa); border-radius:9999px; transition:width .4s; }
.aca-ch-title-text { flex:1; min-width:0; font-size:.8rem; line-height:1.4; color:inherit; }

/* ── Content wrap ── */
.aca-content-wrap { flex:1; min-width:0; display:flex; flex-direction:column; }
.aca-article-main { flex:1; }

/* ── TOC ── */
.aca-toc-right-title { font-size:.6875rem; font-weight:700; color:#6b7280; text-transform:uppercase; letter-spacing:.08em; margin-bottom:.75rem; }
.aca-toc-right-nav { display:flex; flex-direction:column; gap:0; }

/* ── Navigation prev / next ── */
.aca-nav-pn {
  display:grid; grid-template-columns:1fr 1fr; gap:1rem;
  margin-top:3rem; padding-top:2rem; border-top:1px solid #1e293b;
}
.aca-nav-card {
  display:flex; flex-direction:column; padding:1rem 1.25rem;
  background:#111827; border:1px solid #1e293b; border-radius:.875rem;
  text-decoration:none; transition:border-color .15s,background .15s;
}
.aca-nav-card:hover { border-color:rgba(124,58,237,.4); background:rgba(124,58,237,.05); }
.aca-nav-card-prev { align-items:flex-start; }
.aca-nav-card-next { align-items:flex-end; grid-column:2; }
.aca-nav-card i { font-size:.875rem; color:#7c3aed; margin-bottom:.375rem; }
.aca-nav-card-title { font-size:.875rem; font-weight:600; color:#cbd5e1; line-height:1.35; }
@media(max-width:640px){ .aca-nav-pn{grid-template-columns:1fr;} .aca-nav-card-next{grid-column:1;} }

/* ── Mobile topbar ── */
.aca-mobile-topbar {
  display:flex; align-items:center; gap:.75rem; padding:.625rem 1rem;
  border-bottom:1px solid #1e293b; background:#0d1117;
  position:sticky; top:0; z-index:10;
}
@media(min-width:1024px){ .aca-mobile-topbar { display:none; } }
.aca-mobile-menu-btn {
  display:flex; align-items:center; justify-content:center;
  width:2rem; height:2rem; border-radius:.5rem; border:none; cursor:pointer;
  background:rgba(255,255,255,.06); color:#9ca3af; flex-shrink:0; font-size:.875rem;
  transition:background .15s;
}
.aca-mobile-menu-btn:hover { background:rgba(255,255,255,.12); color:#e2e8f0; }

/* ── Overlay mobile ── */
.aca-overlay {
  position:fixed; inset:0; z-index:199; background:rgba(0,0,0,.6);
  backdrop-filter:blur(2px); opacity:0; pointer-events:none; transition:opacity .25s;
}
.aca-overlay.open { opacity:1; pointer-events:auto; }

/* ── TOC mobile accordion ── */
.aca-toc-mobile { background:#111827; border:1px solid #1e293b; border-radius:.75rem; margin-bottom:1.5rem; overflow:hidden; }
.aca-toc-mobile summary {
  display:flex; align-items:center; justify-content:space-between;
  padding:.75rem 1rem; cursor:pointer; font-size:.8125rem; font-weight:600; color:#9ca3af; list-style:none;
}
.aca-toc-mobile summary::-webkit-details-marker { display:none; }
.aca-toc-mobile summary:hover { color:#e2e8f0; }
.aca-toc-mobile-nav { padding:.5rem .75rem 1rem; }

/* ── Reading progress bar ── */
.aca-read-bar { position:fixed; top:60px; left:0; right:0; z-index:40; height:3px; background:#1e293b; }
.aca-read-bar-fill { height:100%; width:0; background:linear-gradient(90deg,#7c3aed,#a78bfa); transition:width .1s linear; }

/* ── Header search position ── */
.aca-header-search { position:relative; }

/* ============================================================
   FIN academy.css
   ============================================================ */