.admin-nav {
    position: sticky;
    top: 0;
    z-index: 1030; /* au-dessus des autres éléments */
    background-color: #005A9C;
    padding: 0.5rem 1rem;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
  }
  
  .admin-nav a {
    color: #ffffff;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    font-weight: 500;
    transition: all 0.25s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    white-space: nowrap;
    font-size: 0.95rem;
  }
  
  .admin-nav a:hover {
    background-color: rgba(255, 255, 255, 0.2);
  }
  
  .admin-nav a.active {
    background-color: #ffffff;
    color: #005A9C;
    font-weight: 600;
  }
  
  @media (max-width: 576px) {
    .admin-nav {
      flex-direction: column;
      align-items: stretch;
    }
  
    .admin-nav a {
      text-align: center;
      justify-content: center;
      width: 100%;
    }
  }