/* Variables de couleurs optimisées */
:root {
  --blue-france: #000091;
  --blue-france-light: #1212ff;
  --red-france: #e1000f;
  --light-bg: #f6f6f6;
  --white: #ffffff;
  --text-main: #242424;
  --success: #27a658;
  --error: #e1000f;
  --border-color: #e5e5e5;
  --shadow: 0 8px 25px rgba(0,0,0,0.08);

  --bg-color: var(--light-bg);
  --card-bg: var(--white);
  --text-color: var(--text-main);
  --input-bg: var(--white);
  --header-bg: var(--white);
  --header-shadow: 0 2px 10px rgba(0,0,0,0.05);
  --card-shadow: var(--shadow);
  --table-bg: var(--white);
  --table-header-bg: #fcfcfc;
  --table-header-color: #666;
  --hint-bg: #fff9db;
  --hint-border: #fcc419;
  --hint-text: #856404;
}

.dark-mode {
    --blue-france: #6B9BFF;
    --red-france: #FF5E5E;
    --light-bg: #121212;
    --white: #1E1E1E;
    --text-main: #E0E0E0;
    --success: #66BB6A;
    --error: #EF5350;
    --border-color: #333333;
    --shadow: 0 8px 25px rgba(255,255,255,0.05);

    --bg-color: #121212;
    --card-bg: #1E1E1E;
    --text-color: #E0E0E0;
    --input-bg: #252525;
    --header-bg: #1E1E1E;
    --header-shadow: 0 2px 10px rgba(255,255,255,0.03);
    --card-shadow: 0 8px 25px rgba(0,0,0,0.3);
    --table-bg: #1E1E1E;
    --table-header-bg: #252525;
    --table-header-color: #AAAAAA;
    --hint-bg: #2C2B21;
    --hint-border: #A38B2A;
    --hint-text: #E0D5A3;
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
  transition: background-color 0.3s, color 0.3s;
}

/* Header avec liseré tricolore */
header {
  background-color: var(--header-bg);
  width: 100%;
  padding: 20px 0;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  margin-bottom: 40px;
  box-shadow: var(--header-shadow);
  transition: background-color 0.3s;
}
.header-content {
  text-align: center;
}

header h1 {
  margin: 0;
  color: var(--blue-france);
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}

/* Conteneur principal (transparent pour laisser les blocs se séparer) */
main {
  width: 95%;
  max-width: 1000px;
  display: flex;
  flex-direction: column;
  margin-bottom: 40px;
}

/* --- DESIGN DES CARTES (Menu et Résultats) --- */
#menu, #results {
  background: var(--card-bg);
  padding: 40px;
  border-radius: 12px;
  box-shadow: var(--card-shadow);
  border: 1px solid var(--border-color);
  transition: background-color 0.3s, border-color 0.3s;
}

h2 {
  color: var(--blue-france);
  font-size: 1.5rem;
  margin-top: 0;
  margin-bottom: 25px;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 10px;
}

/* --- FORMULAIRES --- */
label {
  display: block;
  margin-bottom: 10px;
  font-weight: 600;
  color: var(--text-color);
}

select, input {
  width: 100%;
  padding: 12px 15px;
  margin-bottom: 25px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 1rem;
  background-color: var(--input-bg);
  color: var(--text-color);
  transition: border-color 0.2s, background-color 0.3s, color 0.3s;
}

select:focus {
  border-color: var(--blue-france);
  outline: none;
}

/* --- LAYOUT DU QUIZ (DEUX BLOCS SÉPARÉS) --- */
.quiz-layout {
  display: flex;
  gap: 30px;
  align-items: center; /* Centrage vertical du tableau par rapport au quiz */
}

.quiz-main-content {
  flex: 1.6;
  background: var(--card-bg);
  padding: 40px;
  border-radius: 12px;
  box-shadow: var(--card-shadow);
  border: 1px solid var(--border-color);
  transition: background-color 0.3s, border-color 0.3s;
  
  /* Ajout pour une hauteur minimale */
  display: flex;
  flex-direction: column;
  min-height: 520px; 
  justify-content: space-evenly;
  text-align: center;
}

#options-container {
}

.quiz-sidebar {
  flex: 1;
  display: flex;
  justify-content: center;
}

/* --- BOUTONS QCM --- */
.btn-choix {
  display: flex; /* Changé pour Flexbox */
  align-items: center; /* Centre le texte verticalement */
  justify-content: center; /* Centrer le contenu horizontalement */
  width: 100%;
  padding: 18px 20px;
  margin: 15px 0;
  cursor: pointer;
  border: 1px solid var(--border-color);
  background: var(--card-bg);
  color: var(--text-color);
  border-radius: 10px;
  font-size: 1.05rem;
  font-weight: 500;
  text-align: center;
  transition: all 0.25s ease;
  min-height: 50px; /* Assure une hauteur minimale pour tous les boutons */
}

.btn-choix:hover {
  border-color: var(--blue-france);
  background-color: rgba(0, 33, 87, 0.08);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 33, 87, 0.08);
}

.dark-mode .btn-choix:hover {
    background-color: rgba(107, 155, 255, 0.1);
}

.correct {
  background-color: #eafaf1 !important;
  border-color: var(--success) !important;
  color: #1b5e20 !important;
  font-weight: 700;
}

.dark-mode .correct {
    background-color: rgba(102, 187, 106, 0.2) !important;
    color: #C8E6C9 !important;
}

.wrong {
  background-color: #fff5f5 !important;
  border-color: var(--error) !important;
  color: #c62828 !important;
}

.dark-mode .wrong {
    background-color: rgba(239, 83, 80, 0.2) !important;
    color: #FFCDD2 !important;
}

/* --- TABLEAU DE STATS --- */
#quiz-stats {
  width: 100%;
  max-width: 320px;
  border-collapse: separate;
  border-spacing: 0;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  background: var(--table-bg);
  box-shadow: var(--card-shadow);
  transition: background-color 0.3s, border-color 0.3s;
}

#quiz-stats th {
  background-color: var(--table-header-bg);
  color: var(--table-header-color);
  text-align: left;
  padding: 15px;
  font-size: 0.85rem;
  text-transform: uppercase;
  border-bottom: 1px solid var(--border-color);
  transition: background-color 0.3s, color 0.3s, border-color 0.3s;
}

#quiz-stats td {
  text-align: right;
  padding: 15px;
  font-weight: 700;
  font-size: 1.1rem;
  border-bottom: 1px solid var(--border-color);
  transition: border-color 0.3s;
}


/* --- Menu Layout --- */
.menu-layout {
  display: flex;
  gap: 40px;
}

.quiz-settings {
  flex: 2;
}

.useful-links {
  flex: 1;
  padding-left: 40px;
  border-left: 1px solid var(--border-color);
}

.useful-links h3 {
  color: var(--blue-france);
  font-size: 1.2rem;
  margin-top: 0;
  margin-bottom: 20px;
}

.useful-links ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.useful-links li {
  margin-bottom: 15px;
}

.useful-links a {
  color: var(--text-color);
  text-decoration: none;
  font-weight: 600;
  display: block;
  padding: 10px 15px;
  border-radius: 8px;
  transition: all 0.2s ease;
  border: 1px solid transparent;
}

.useful-links a:hover {
  color: var(--blue-france);
  background-color: rgba(0, 33, 87, 0.08);
  border-color: var(--border-color);
  transform: translateX(3px);
}

.dark-mode .useful-links a:hover {
    background-color: rgba(107, 155, 255, 0.1);
}

/* --- BOUTONS D'ACTION --- */
button[onclick="initiateQuiz()"], #next-btn, button[onclick="location.reload()"] {
  background: var(--blue-france);
  color: white;
  padding: 15px 30px;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s ease;
}

button[onclick="initiateQuiz()"] {
  margin-top: 20px;
  display: block;
  width: 100%;
}

button:hover {
  background: #000060;
  transform: translateY(-1px);
}

.dark-mode button:hover {
    background: #8aaaff;
}

#next-btn {
  float: right;
  margin-top: 20px;
}

.stat-correct { color: var(--success); }
.stat-wrong { color: var(--error); }

/* --- RESPONSIVE --- */
@media (max-width: 850px) {
  main {
    width: 90%;
  }

  .menu-layout {
    flex-direction: column;
    gap: 30px;
  }

  .useful-links {
    padding-left: 0;
    border-left: none;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
  }

  .quiz-layout {
    flex-direction: column;
    gap: 20px;
  }
  .quiz-sidebar, .quiz-main-content { 
    width: 100%; 
    box-sizing: border-box; /* Pour inclure padding et bordure dans la largeur */
  }
  #menu, #results, .quiz-main-content { 
    padding: 30px; 
  }
  #quiz-stats {
    max-width: none;
  }
}

@media (max-width: 600px) {
  body {
    min-height: -webkit-fill-available; /* iOS Safari viewport height fix */
  }

  header {
    margin-bottom: 20px;
    padding: 15px 0;
  }

  header h1 {
    font-size: 1.4rem;
  }

  #theme-toggle {
    right: 15px;
    width: 40px;
    height: 40px;
    font-size: 1.3rem;
  }

  main {
    width: 90%;
  }

  #menu, #results, .quiz-main-content {
    padding: 25px 20px;
  }
  
  .btn-choix {
    padding: 15px;
    font-size: 1rem;
  }
}

.navigation-controls {
  display: flex;
  justify-content: center; /* Centrer les boutons */
  gap: 15px;
  margin-top: 30px;
}

#prev-btn {
  background: #6c757d; /* Gris pour le bouton précédent */
  color: white;
  padding: 12px 25px;
  border: none;
  border-radius: 8px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s;
}

#prev-btn:hover:not(:disabled) {
  background: #5a6268;
  transform: translateY(-1px);
}

#prev-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* On s'assure que le bouton suivant ne flotte plus à droite pour rester dans le flex */
#next-btn {
  float: none !important; 
  margin-top: 0 !important;
}

#hint-container {
  background-color: var(--hint-bg);
  border-left: 4px solid var(--hint-border);
  padding: 15px;
  margin-bottom: 20px;
  border-radius: 4px;
  font-style: italic;
  font-size: 0.95rem;
  color: var(--hint-text);
  animation: fadeIn 0.3s ease;
  transition: background-color 0.3s, color 0.3s, border-color 0.3s;
}

#hint-btn {
  background: transparent;
  color: var(--blue-france);
  border: 1px solid var(--blue-france);
  padding: 10px 15px;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
  transition: all 0.2s;
}

#hint-btn:hover {
  background: #f0f7ff;
}

.dark-mode #hint-btn:hover {
  background: rgba(107, 155, 255, 0.1);
}

#timed-exam-container,
#mise-en-situation-container,
#api-key-container,
#theme-selector-container {
  margin-top: 15px;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --- LOADER --- */
#loader {
  text-align: center;
  padding: 50px;
}

.spinner {
  border: 4px solid rgba(0, 0, 0, 0.1);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border-left-color: var(--blue-france);
  animation: spin 1s ease infinite;
  margin: 0 auto 20px;
}

.dark-mode .spinner {
  border-left-color: #6B9BFF;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

.hidden {
  display: none !important;
}

/* --- Header Controls --- */
.header-controls {
  position: absolute;
  top: 50%;
  right: 30px;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  gap: 20px;
}

.lang-switcher button {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-color);
  padding: 8px 12px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.3s;
}

.lang-switcher button:hover {
  background-color: var(--border-color);
}

.lang-switcher {
  display: flex;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
}

.lang-switcher button {
  background: transparent;
  border: none;
  color: var(--text-color);
  padding: 8px 12px;
  cursor: pointer;
  transition: background-color 0.3s;
  font-weight: 600;
  font-size: 0.9rem;
}

.lang-switcher button:first-child {
  border-right: 1px solid var(--border-color);
}

.lang-switcher button:hover {
  background-color: var(--border-color);
}

.lang-switcher button.selected {
  background-color: var(--blue-france);
  color: white;
}

.dark-mode .lang-switcher button.selected {
  background-color: var(--blue-france);
  color: #E0E0E0;
}


/* The switch - the box around the slider */
.theme-switch {
  position: relative;
  display: inline-block;
  width: 60px;
  height: 34px;
}

/* Hide default HTML checkbox */
.theme-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

/* The slider track */
.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #ccc;
  transition: .4s;
  border-radius: 34px;
}

/* The slider thumb */
.slider:before {
  position: absolute;
  content: "";
  height: 26px;
  width: 26px;
  left: 4px;
  bottom: 4px;
  background-color: white;
  transition: .4s;
  border-radius: 50%;
  
  /* SVG icon styling */
  background-repeat: no-repeat;
  background-position: center;
  background-size: 16px;
  
  /* Sun icon for light mode */
  background-image: url('data:image/svg+xml,%3csvg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="%23242424" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"%3e%3ccircle cx="12" cy="12" r="5"%3e%3c/circle%3e%3cline x1="12" y1="1" x2="12" y2="3"%3e%3c/line%3e%3cline x1="12" y1="21" x2="12" y2="23"%3e%3c/line%3e%3cline x1="4.22" y1="4.22" x2="5.64" y2="5.64"%3e%3c/line%3e%3cline x1="18.36" y1="18.36" x2="19.78" y2="19.78"%3e%3c/line%3e%3cline x1="1" y1="12" x2="3" y2="12"%3e%3c/line%3e%3cline x1="21" y1="12" x2="23" y2="12"%3e%3c/line%3e%3cline x1="4.22" y1="19.78" x2="5.64" y2="18.36"%3e%3c/line%3e%3cline x1="18.36" y1="5.64" x2="19.78" y2="4.22"%3e%3c/line%3e%3c/svg%3e');
  transform: rotate(0deg); /* Initial state for animation */
}

input:focus + .slider {
  box-shadow: 0 0 1px var(--blue-france);
}

/* Dark mode state */
input:checked + .slider {
  background-color: var(--card-bg);
}

input:checked + .slider:before {
  transform: translateX(26px) rotate(360deg);
  background-color: #333;
  
  /* Moon icon for dark mode */
  background-image: url('data:image/svg+xml,%3csvg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="white" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"%3e%3cpath d="M21 12.79A9 9 0 1 1 11.21 3 7 7 0 0 0 21 12.79z"%3e%3c/path%3e%3c/svg%3e');
}