/* Tablette et mobile */
@media (max-width: 1024px) {
  .toc-sidebar {
    display: none;
  }
  .main-content {
    margin-left: 0;
  }
  .mobile-toggle {
    display: block;
  }
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: white;
    padding: 1rem;
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
  }
  .main-nav.active {
    display: block;
  }
  .main-nav ul {
    flex-direction: column;
    gap: 0.8rem;
  }
  .grid-2, .grid-3 {
    grid-template-columns: 1fr;
  }
  .hero-section h1 {
    font-size: 2rem;
  }
  .stat-item span {
    font-size: 1.4rem;
  }
}

@media (max-width: 640px) {
  .container {
    padding: 0 1rem;
  }
  .card {
    padding: 1rem;
  }
  canvas {
    max-height: 250px;
  }
}