@media (max-width: 768px) {
  .navbar {
    flex-direction: column;
    align-items: center;
  }

  .barra-redes {
    top: auto;
    bottom: 0;
    left: 0;
    right: 0;
    transform: none;
    flex-direction: row;
    justify-content: center;
    gap: 25px;
    border-radius: 0;
    box-shadow: 0 -2px 8px rgba(0,0,0,0.2);
    padding: 10px 0;
  }

  .barra-redes a {
    font-size: 22px;
    padding: 10px;
  }

  section {
    margin-left: 0;
    padding-bottom: 70px;
  }
}