.topnav {
    display: flex;
    gap: 2rem;
    background-color: #111827;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid #374151;
    margin-bottom: 2rem;
  }

  .topnav a {
    color: #e5e7eb;
    font-weight: 500;
    text-decoration: none;
    font-size: 1rem;
  }

  .topnav a:hover {
    color: #3b82f6;
  }
  
  /* Effet hover pour sidebar */
.sidebar .nav-link {
  color: #cbd5e1;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  transition: all 0.2s ease;
}

.sidebar .nav-link:hover {
  background-color: #374151;
  color: #ffffff;
  transform: translateX(3px);
}

/* Effet hover pour menu horizontal */
.flex a {
  transition: all 0.2s ease;
}

.flex a:hover {
  background-color: #3b82f6 !important;
  color: #ffffff !important;
  transform: scale(1.05);
}

footer {
  background-color: #1a1a1c;
  color: #ddd;
  font-family: system-ui, sans-serif;
  font-size: 15px;
  padding: 60px 40px 30px 40px;
}

footer .footer-columns {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start; /* ALIGNEMENT GAUCHE */
  align-items: flex-start;
  gap: 60px;
  max-width: 1200px;
  margin: auto;
  text-align: left; /* important */
}

footer h4 {
  color: #fff;
  margin-bottom: 6px;
  border-bottom: 2px solid #4f8cf3;
  width: fit-content;
  padding-bottom: 4px;
  text-align: left;
}

footer p, footer a {
  margin: 4px 0;
  color: #aaa;
  text-decoration: none;
  text-align: left;
}

footer a:hover {
  color: white;
}

footer hr {
  margin: 30px 0 10px 0;
  width: 90%;
  border-color: #444;
}

footer .footer-bottom {
  color: #666;
  font-size: 0.85rem;
  text-align: left;
  max-width: 1200px;
  margin: auto;
  padding-top: 20px;
}