body {
      font-family: 'Segoe UI', sans-serif;
      background-color: #f8f9fa;
    }
    .sidebar {
      height: 100vh;
      background: #0d6efd;
      color: #fff;
      padding-top: 1rem;
    }
    .sidebar a {
      color: #fff;
      text-decoration: none;
      display: block;
      padding: .7rem 1rem;
      border-radius: .375rem;
    }
    .sidebar a:hover {
      background: rgba(255,255,255,.2);
    }
    .card {
      border-radius: 1rem;
      box-shadow: 0 4px 8px rgba(0,0,0,0.05);
    }
    @media(max-width: 768px){
      .sidebar { display: none; }
    }
    .mobile-icons a {
      color: #0d6efd !important;
      padding: 0 10px;
      font-size: 1.4rem;
    }
    .mobile-icons {
      display: flex;
      justify-content: flex-end;
      gap: 15px;
    }
    .footer a {
      flex: 1;
      font-size: 0.85rem;
    }
    .footer i {
      display: block;
    }

    

    /*  MODE RESPONSIVE */
    .stat-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr); /* 3 par ligne */
  gap: 1rem;
}

.card {
  padding: 1rem;
  border-radius: 10px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.70);
  transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
  transform: translateY(-5px) scale(1.03);
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

/* Pour très petits écrans (ex: < 350px) réduire un peu */
@media screen and (max-width: 350px) {
  .stat-cards {
    grid-template-columns: repeat(2, 1fr); /* 2 cartes si trop petit */
  }
}