/* =========================================================
   STYLE PRINCIPAL - 4E ANNÉE SCIENTIFIQUE (BAC 2026)
   Informatique & Pensée Computationnelle
   ========================================================= */

:root {
  --primary-color: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #eff6ff;
  --secondary-color: #0f172a;
  --accent-cyan: #06b6d4;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --accent-purple: #8b5cf6;
  --bg-main: #f8fafc;
  --bg-card: #ffffff;
  --text-main: #1e293b;
  --text-muted: #64748b;
  --border-color: #e2e8f0;
  --code-bg: #1e1e2e;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 10px 25px rgba(15, 23, 42, 0.12);
  --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.15);
}

body {
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.6;
  scroll-behavior: smooth;
}

/* NAVBAR */
.navbar-custom {
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding: 0.85rem 1.5rem;
}

.navbar-brand {
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.5px;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.brand-badge {
  background: linear-gradient(135deg, #3b82f6, #8b5cf6);
  color: white;
  font-size: 0.75rem;
  padding: 0.25rem 0.6rem;
  border-radius: 9999px;
  font-weight: 600;
}

.navbar-custom .nav-link {
  color: #cbd5e1 !important;
  font-weight: 500;
  font-size: 0.95rem;
  padding: 0.4rem 0.85rem !important;
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
}

.navbar-custom .nav-link:hover, .navbar-custom .nav-link.active {
  color: #ffffff !important;
  background-color: rgba(255, 255, 255, 0.08);
}

/* =========================================================
   TABS DE CODE ET ACTIVITÉS (NAV-TABS STYLING)
   ========================================================= */
.nav-tabs {
  border-bottom: 2px solid #cbd5e1;
  gap: 6px;
  background: transparent;
  padding-left: 4px;
}

.nav-tabs .nav-item {
  margin-bottom: -2px;
}

.nav-tabs .nav-link {
  color: #475569 !important;
  background-color: #f1f5f9 !important;
  border: 1px solid #cbd5e1 !important;
  border-bottom: 2px solid #cbd5e1 !important;
  border-radius: 8px 8px 0 0 !important;
  font-weight: 600 !important;
  font-size: 0.9rem !important;
  padding: 0.6rem 1.25rem !important;
  transition: all 0.2s ease-in-out;
  display: inline-flex;
  align-items: center;
}

.nav-tabs .nav-link:hover {
  color: #1e293b !important;
  background-color: #e2e8f0 !important;
  border-color: #94a3b8 !important;
}

.nav-tabs .nav-link.active {
  color: #1e293b !important;
  background-color: #ffffff !important;
  border-color: #cbd5e1 #cbd5e1 #ffffff !important;
  border-bottom: 2px solid #ffffff !important;
  font-weight: 700 !important;
  box-shadow: 0 -3px 8px rgba(15, 23, 42, 0.05);
}

.nav-tabs .nav-link.active.text-primary,
.nav-tabs .nav-link.active[data-bs-target*="algo"] {
  color: #1d4ed8 !important;
  border-top: 3px solid #2563eb !important;
}

.nav-tabs .nav-link.active.text-warning,
.nav-tabs .nav-link.active[data-bs-target*="py"] {
  color: #b45309 !important;
  border-top: 3px solid #f59e0b !important;
}

.nav-tabs .nav-link.text-primary:not(.active) {
  color: #2563eb !important;
}

.nav-tabs .nav-link.text-warning:not(.active) {
  color: #d97706 !important;
}

.tab-content {
  background: #ffffff;
  border: 1px solid #cbd5e1;
  border-top: none;
  border-radius: 0 0 12px 12px;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.04);
}

.tab-content .code-container {
  margin: 0.25rem 0 0.5rem 0;
}

/* HERO SECTION */
.hero-banner {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #1e1b4b 100%);
  color: white;
  padding: 3rem 1.5rem 3.5rem;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  box-shadow: var(--shadow-md);
  margin-bottom: 2.5rem;
  position: relative;
  overflow: hidden;
}

.hero-banner::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, rgba(139, 92, 246, 0) 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-title {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 0.75rem;
}

.hero-subtitle {
  color: #94a3b8;
  font-size: 1.1rem;
  max-width: 800px;
}

.objective-box {
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-left: 4px solid #38bdf8;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  margin-top: 1.5rem;
  backdrop-filter: blur(8px);
}

/* CARDS & CONTAINERS */
.section-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  margin-bottom: 2rem;
  transition: box-shadow 0.2s ease;
  overflow: hidden;
}

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

.section-header {
  padding: 1.25rem 1.75rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #f8fafc;
}

.phase-pill {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 0.35rem 0.75rem;
  border-radius: 9999px;
  background: #e0f2fe;
  color: #0369a1;
}

.phase-pill.amber {
  background: #fef3c7;
  color: #b45309;
}

.phase-pill.emerald {
  background: #d1fae5;
  color: #065f46;
}

.phase-pill.purple {
  background: #ede9fe;
  color: #6d28d9;
}

.section-body {
  padding: 1.75rem;
}

/* SITUATION MOBILISATRICE CALLOUT */
.situation-callout {
  background: linear-gradient(135deg, #eff6ff 0%, #f0fdf4 100%);
  border: 1px solid #bfdbfe;
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-bottom: 2rem;
  position: relative;
}

.situation-callout .badge-context {
  background: #1e40af;
  color: white;
  font-size: 0.75rem;
  padding: 0.3rem 0.7rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  display: inline-block;
  margin-bottom: 0.75rem;
}

/* CODE BLOCKS & TABS */
.code-container {
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--code-bg);
  box-shadow: var(--shadow-sm);
  margin: 1.25rem 0;
  border: 1px solid #2e2e42;
}

.code-header {
  background: #181825;
  padding: 0.6rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid #2e2e42;
}

.code-lang-tag {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: #a6adc8;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.copy-btn {
  background: transparent;
  border: 1px solid #45475a;
  color: #cdd6f4;
  font-size: 0.75rem;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s;
}

.copy-btn:hover {
  background: #313244;
  color: #ffffff;
}

.code-container pre {
  margin: 0;
  padding: 1.25rem;
  overflow-x: auto;
  font-family: 'Consolas', 'Courier New', monospace;
  font-size: 0.92rem;
  line-height: 1.6;
}

.code-container pre code.hljs {
  padding: 0;
  background: transparent;
  font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', 'Courier New', monospace;
  font-size: 0.95rem;
  line-height: 1.65;
}

/* Coloration syntaxique unifiée et enrichie (Pseudo-code & Python) */
.hljs-operator {
  color: #56b6c2 !important; /* Cyan éclatant pour ←, ≠, ≤, ≥, ∈, Div, Mod, Et, Ou, Non, @, .. */
  font-weight: 600;
}

.hljs-keyword {
  color: #c678dd !important; /* Violet Atom One Dark pour mots-clés : ALGORITHME, DEBUT, FIN, Si, Alors, etc. */
  font-weight: 600;
}

.hljs-type {
  color: #e5c07b !important; /* Or / Ambre pour les types : entier, réel, booléen, chaîne, Tableau */
  font-weight: 500;
}

.hljs-built_in {
  color: #61afef !important; /* Bleu azur pour les primitives officielles : RacineCarré, Aléa, Pos, Effacer, Majus */
  font-weight: 500;
}

.hljs-literal {
  color: #d19a66 !important; /* Orange ambré pour Vrai, Faux */
  font-weight: 600;
}

.hljs-string {
  color: #98c379 !important; /* Vert vif pour chaînes et caractères */
}

.hljs-number {
  color: #d19a66 !important; /* Orange doux pour entiers et réels */
}

.hljs-comment {
  color: #7f848e !important; /* Gris soigné et lisible pour les commentaires */
  font-style: italic;
}

/* CONVENTIONS TABLES (TDNT, TDOG, TDOL) */
.convention-table {
  width: 100%;
  margin-top: 1rem;
  margin-bottom: 1.5rem;
  border-collapse: collapse;
  background: white;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border-color);
  font-size: 0.95rem;
}

.convention-table thead {
  background: #0f172a;
  color: white;
}

.convention-table th {
  padding: 0.75rem 1rem;
  font-weight: 600;
  text-align: left;
  font-size: 0.85rem;
  letter-spacing: 0.5px;
}

.convention-table td {
  padding: 0.65rem 1rem;
  border-bottom: 1px solid var(--border-color);
  vertical-align: middle;
}

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

.convention-table tr:hover {
  background-color: #f8fafc;
}

.type-badge {
  font-family: 'Consolas', monospace;
  font-size: 0.85rem;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  background: #e2e8f0;
  color: #334155;
  font-weight: 600;
}

.type-badge.func {
  background: #ede9fe;
  color: #6d28d9;
}

.type-badge.proc {
  background: #dbeafe;
  color: #1d4ed8;
}

/* SIMULATEUR / INTERACTION CARD */
.interactive-card {
  background: #ffffff;
  border: 2px solid #bfdbfe;
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  margin: 2rem 0;
  box-shadow: var(--shadow-glow);
}

.interactive-title {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.2rem;
  font-weight: 700;
  color: #1e3a8a;
  margin-bottom: 1rem;
}

.step-trace {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.step-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background: #f8fafc;
  border-radius: var(--radius-sm);
  border-left: 4px solid var(--primary-color);
  font-size: 0.92rem;
}

.step-item.success {
  border-left-color: var(--accent-emerald);
  background: #f0fdf4;
}

.step-item.fail {
  border-left-color: #ef4444;
  background: #fef2f2;
}

/* QUIZ CARDS */
.quiz-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  margin-bottom: 1rem;
}

.quiz-option {
  display: block;
  padding: 0.65rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  margin-bottom: 0.5rem;
  cursor: pointer;
  transition: all 0.2s;
  font-size: 0.95rem;
}

.quiz-option:hover {
  background: #f1f5f9;
  border-color: #cbd5e1;
}

.quiz-option.selected {
  border-color: var(--primary-color);
  background: var(--primary-light);
}

.quiz-option.correct {
  border-color: var(--accent-emerald);
  background: #dcfce7;
  color: #166534;
  font-weight: 600;
}

.quiz-option.incorrect {
  border-color: #ef4444;
  background: #fee2e2;
  color: #991b1b;
}

/* BUTTONS */
.btn-primary-custom {
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: white;
  border: none;
  font-weight: 600;
  padding: 0.6rem 1.4rem;
  border-radius: var(--radius-sm);
  box-shadow: 0 2px 6px rgba(37, 99, 235, 0.3);
  transition: all 0.2s;
}

.btn-primary-custom:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
  color: white;
}

/* FOOTER */
.footer-custom {
  background: #0f172a;
  color: #94a3b8;
  padding: 2.5rem 1.5rem;
  margin-top: 4rem;
  font-size: 0.9rem;
  border-top: 1px solid #1e293b;
}

/* ANIMATIONS & UTILS */
.fade-enter-active, .fade-leave-active {
  transition: opacity 0.3s ease;
}
.fade-enter-from, .fade-leave-to {
  opacity: 0;
}

/* MENU FLOTTANT RÉTRACTABLE (FLOATING ACTION MENU) */
.floating-menu-wrapper {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 1060;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.6rem;
}

/* Bouton déclencheur flottant (toujours visible, discret et non invasif) */
.floating-menu-trigger {
  background: linear-gradient(135deg, #0f172a, #1e293b);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50px;
  padding: 0.65rem 1.15rem;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.35);
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 0.88rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.floating-menu-trigger:hover {
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(37, 99, 235, 0.45);
  color: white;
}

.floating-menu-trigger .phase-chip {
  background: #2563eb;
  color: white;
  padding: 0.15rem 0.55rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
}

.floating-menu-trigger:hover .phase-chip {
  background: rgba(255, 255, 255, 0.25);
}

/* Panneau flottant déroulant au-dessus du bouton */
.floating-menu-panel {
  background: rgba(15, 23, 42, 0.96);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 16px;
  padding: 0.85rem 0.75rem;
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.45);
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  width: 270px;
  max-height: calc(100vh - 120px);
  overflow-y: auto;
  animation: floatMenuUp 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes floatMenuUp {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.floating-menu-header {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: #94a3b8;
  padding: 0.3rem 0.5rem 0.45rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  margin-bottom: 0.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.floating-menu-close-btn {
  background: transparent;
  border: none;
  color: #94a3b8;
  padding: 0.2rem 0.45rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.85rem;
  line-height: 1;
  transition: all 0.2s;
}

.floating-menu-close-btn:hover {
  background: rgba(255, 255, 255, 0.12);
  color: white;
}

.floating-menu-item {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.5rem 0.7rem;
  border-radius: 10px;
  background: transparent;
  border: 1px solid transparent;
  color: #cbd5e1;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  text-align: left;
  text-decoration: none;
  transition: all 0.2s ease;
  width: 100%;
}

.floating-menu-item:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  transform: translateX(-2px);
}

.floating-menu-item.active {
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: #ffffff;
  font-weight: 700;
  border-color: rgba(255, 255, 255, 0.2);
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.45);
}

.floating-badge-num {
  width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
  font-size: 0.75rem;
  font-weight: 700;
  flex-shrink: 0;
}

.floating-menu-item.active .floating-badge-num {
  background: rgba(255, 255, 255, 0.28);
  color: white;
}

/* NAVIGATION FOOTER */
.phase-nav-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-color);
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* COMPOSANTS COMMUNS : CONSOLE TERMINALE SIMULÉE */
.terminal-window {
  background-color: #0f172a;
  border: 1px solid #334155;
  border-radius: var(--radius-md);
  overflow: hidden;
  font-family: 'Courier New', Courier, monospace;
}

.terminal-header {
  background-color: #1e293b;
  padding: 0.5rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  border-bottom: 1px solid #334155;
}

.terminal-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  display: inline-block;
}

.dot-red {
  background-color: #ef4444;
}

.dot-yellow {
  background-color: #f59e0b;
}

.dot-green {
  background-color: #10b981;
}

.terminal-body {
  padding: 1rem;
  color: #38bdf8;
  font-size: 0.92rem;
  white-space: pre-wrap;
}

/* COMPOSANTS COMMUNS : CARTES DE QUESTIONNEMENT ORAL */
.oral-card {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: white;
  transition: all 0.25s ease;
  cursor: pointer;
}

.oral-card:hover {
  border-color: var(--primary-color);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.oral-answer-box {
  background: #f8fafc;
  border-left: 4px solid var(--accent-emerald);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 0.85rem;
}

@media print {
  .navbar-custom, .copy-btn, .btn-primary-custom, .footer-custom, .floating-menu-wrapper, .phase-nav-footer {
    display: none !important;
  }
  .section-card, .interactive-card, .situation-callout {
    box-shadow: none;
    border: 1px solid #ccc;
    page-break-inside: avoid;
    display: block !important;
  }
}