body {
  font-family: 'Segoe UI', sans-serif;
  margin: 0;
  padding: 0;
  background-color: #FEFDF6;
  color: #333;
}
header {
  background-color: #FEFDF6;
  padding: 1em;
  color: white;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}
.logo {
  height: 60px;
}
nav a {
  margin: 0 0.5em;
  color: white;
  text-decoration: none;
  font-weight: bold;
}
.hero {
  text-align: center;
  padding: 3em 1em;
  background: linear-gradient(to bottom, #FFF3D3, #A3C2A2);
}
.hero h1 {
  font-size: 2.2em;
  color: #4C99B2;
}
.btn {
  background-color: #FEFDF6;
  color: #333;
  padding: 0.8em 1.5em;
  text-decoration: none;
  border-radius: 8px;
  font-weight: bold;
  display: inline-block;
  margin-top: 1em;
}
ul.bienfaits, ul.tarifs {
  list-style: none;
  padding: 0;
  text-align: center;
}
ul.bienfaits li, ul.tarifs li {
  margin: 0.5em 0;
  font-size: 1.1em;
}
footer {
  background-color: #FEFDF6;
  color: white;
  text-align: center;
  padding: 2em 1em;
  margin-top: 3em;
}
.back {
  color: white;
  text-decoration: none;
  font-weight: bold;
}
@media (max-width: 768px) {
  nav {
    flex-direction: column;
    gap: 0.5em;
  }
  .hero h1 {
    font-size: 1.6em;
  }
}



/* Apparition au scroll */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 1s ease-out, transform 1s ease-out;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Hover sur cartes */
.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0,0,0,0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

/* Animation sur bouton */
.pulse {
  animation: pulse 2.5s infinite ease-in-out;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(139, 198, 161, 0.4); }
  70% { box-shadow: 0 0 0 15px rgba(139, 198, 161, 0); }
  100% { box-shadow: 0 0 0 0 rgba(139, 198, 161, 0); }
}