/* --- GLOBAL & RESET --- */
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Inter', sans-serif;
  background-color: #ffffff;
  color: #121212;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* --- Navigation (Bouton Retour) --- */
.back-link {
  position: absolute;
  top: 30px;
  left: 30px;
  text-decoration: none;
  color: #888;
  font-size: 0.9em;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: color 0.2s;
  z-index: 10;
}

.back-link:hover {
  color: #000;
}

/* --- Layout Principal --- */
.main-wrapper, .container-quiz {
  width: 100%;
  padding: 20px;
  display: flex;
  justify-content: center;
}

/* --- CARTE QUIZ & ACCUEIL --- */
.quiz-card {
  background-color: #ffffff;
  width: 100%;
  max-width: 500px;
  border-radius: 16px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08); /* Ombre douce */
  border: 1px solid #eaeaea;
  overflow: hidden;
  position: relative;
}

/* --- Carte d'Introduction --- */
.card-intro {
  background-color: #fafafa; /* Très léger gris pour détacher la carte */
  padding: 60px 40px;
  border-radius: 20px;
  text-align: center;
  max-width: 450px;
  width: 100%;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05); /* Ombre douce et diffuse */
  border: 1px solid #f0f0f0;
  transition: transform 0.3s ease;
}

/* --- Header du Quiz --- */
.quiz-header {
  padding: 40px 40px 20px;
}

h2 {
  margin: 0 0 30px;
  font-weight: 800;
  font-size: 1.5em;
  text-align: center;
  letter-spacing: -0.5px;
  line-height: 1.3;
}

/* --- Liste des Réponses --- */
ul {
  list-style-type: none;
  padding: 0;
  margin: 0;
}

ul li {
  margin-bottom: 12px;
}

/* --- Design des Input Radio (Cachés) --- */
input[type="radio"] {
  display: none;
}

/* --- Design des Labels (Boutons de choix) --- */
ul li label {
  display: block;
  padding: 15px 20px;
  background-color: #f9f9f9;
  border: 2px solid #f0f0f0;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 500;
  transition: all 0.2s ease;
  color: #444;
}

ul li label:hover {
  background-color: #f0f0f0;
  border-color: #d0d0d0;
}

/* Effet quand une réponse est sélectionnée */
input[type="radio"]:checked + label {
  background-color: #121212;
  border-color: #121212;
  color: #ffffff;
  transform: scale(1.02);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

/* --- Bouton Soumettre --- */
.btn-submit, .btn-start {
  background-color: #121212;
  color: #fff;
  border: none;
  display: block;
  width: 100%;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  font-family: inherit;
  padding: 20px;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: background-color 0.3s;
}

.btn-submit:hover, .btn-start:hover {
  background-color: #333;
}

.btn-submit:active {
  background-color: #000;
}

/* --- Écran de fin (Résultat) --- */
.result-container {
  text-align: center;
  padding: 50px 30px;
}

.result-container h2 {
  font-size: 1.8em;
  margin-bottom: 30px;
}

.result-container button {
  background-color: #121212;
  color: white;
  border: none;
  padding: 15px 30px;
  font-size: 1rem;
  border-radius: 50px;
  cursor: pointer;
  font-weight: 600;
  transition: transform 0.2s;
}

.result-container button:hover {
  transform: scale(1.05);
}

.icon-header i {
  font-size: 3em;
  color: #121212;
  margin-bottom: 20px;
}

/* --- Responsive --- */
@media (max-width: 500px) {
  .quiz-header {
    padding: 30px 20px 20px;
  }
}