/* RESET */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Inter', Arial, sans-serif;
}

body {
  height: 100vh;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  color: #ffffff;
  position: relative;
  background-color: #111; /* fond sombre global */
}

/* Grille d'images en arrière-plan */
.background-grid {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  grid-template-rows: repeat(4, 1fr);
  gap: 2px;
  z-index: 0;
}

.background-grid img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.25; /* réduit l'intensité pour garder le sombre */
  filter: brightness(0.5); /* assombrit encore plus l'image */
  transition: opacity 1s, filter 1s;
}

/* Conteneur central */
.container {
  position: relative;
  z-index: 1;
  max-width: 600px;
  padding: 2rem;
  background-color: #e06700;
  border-radius: 12px;
  box-shadow: 0 0 40px rgba(0,0,0,0.6);
}

/* Titres et texte */
h1 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

p {
  font-size: 1.1rem;
  margin-bottom: 2rem;
}

/* Boutons de sélection */
.buttons {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

button {
  padding: 1rem 2rem;
  font-size: 1.1rem;
  border: none;
  border-radius: 8px;
  background-color: #000000;
  color: #fff;
  cursor: pointer;
  transition: background 0.3s, transform 0.2s;
}

button:hover {
  background-color: #e06700;
  transform: translateY(-3px);
}

/* RESPONSIVE */
@media (max-width: 480px) {
  h1 {
    font-size: 1.5rem;
  }

  button {
    font-size: 1rem;
    padding: 0.8rem 1.5rem;
  }
}