/* Positionnement fixe de la navbar */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 999;
  }
  
  /* Navbar avec fond bleu */
  .navbar {
    background-color: var(--primary-color);
    padding: 15px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  
  .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    max-width: 90%;
    margin: 0 auto;
  }
  
  .logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--accent-color);
  }
  
  .nav-links {
    list-style: none;
    display: flex;
    gap: 20px;
    margin: 0;
  }
  
  .nav-links li a {
    text-decoration: none;
    color: var(--accent-color);
    font-weight: 600;
    position: relative;
    transition: color 0.3s;
  }
  
  /* Animation au survol */
  .nav-links li a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -5px;
    width: 0;
    height: 2px;
    background-color: var(--accent-color);
    transition: width 0.3s;
  }
  
  .nav-links li a:hover::after {
    width: 100%;
  }