* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Roboto', sans-serif;
}

body {
  background: #f9f9f9;
  color: #333;
  line-height: 1.6;
}

.container {
  max-width: 900px;
  margin: auto;
  padding: 20px;
}

.header {
  background: #0d47a1;
  color: #fff;
  text-align: center;
  padding: 40px 20px;
}

.header h1 {
  font-size: 2.5rem;
}

.subtitle {
  margin-top: 10px;
  font-size: 1.1rem;
}

.btn-primary {
  display: inline-block;
  margin-top: 20px;
  padding: 10px 25px;
  background: #1976d2;
  color: #fff;
  border: none;
  border-radius: 6px;
  text-decoration: none;
  transition: background 0.3s ease;
}

.btn-primary:hover {
  background: #125aa6;
}

h2 {
  color: #0d47a1;
  margin: 20px 0 10px;
}

section {
  margin-bottom: 30px;
}

ul {
  list-style-type: disc;
  margin-left: 20px;
}

.form {
  background: #fff;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.form label {
  display: block;
  margin-top: 15px;
  font-weight: 500;
}

.form input, .form select, .form textarea {
  width: 100%;
  padding: 10px;
  margin-top: 8px;
  border: 1px solid #ccc;
  border-radius: 6px;
}

#status-message {
  margin-top: 15px;
  font-weight: 500;
  text-align: center;
}

.footer {
  background: #0d47a1;
  color: #fff;
  text-align: center;
  padding: 15px 0;
  margin-top: 40px;
}

@media (max-width: 600px) {
  .header h1 { font-size: 1.8rem; }
  .container { padding: 15px; }
}

/* Bouton Accueil */
.btn-secondary {
    display: inline-block;
    padding: 8px 16px;
    background: #fff;
    color: #0d47a1;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    border: 2px solid #fff;
    transition: all 0.3s ease;
  }
  
  .btn-secondary:hover {
    background: #1976d2;
    color: #fff;
  }
  
  .header-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
  }