/* Header */
#header-sitio {
  background-color: #ffffff;
  border-bottom: 1px solid var(--color-borde);
  box-shadow: var(--sombra);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-interno {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.header-logo {
  display: flex;
  align-items: center;
  padding: 4px 0;
}

.header-logo img {
  height: 40px;
  display: block;
}

.header-logo:hover {
  text-decoration: none;
  opacity: 0.9;
}

.nav-lista {
  display: flex;
  list-style: none;
  gap: 8px;
}

.nav-link {
  display: block;
  padding: 10px 14px;
  color: var(--color-texto);
  border-radius: var(--radio-borde);
  font-weight: 500;
}

.nav-link:hover {
  background-color: var(--color-fondo-alt);
  text-decoration: none;
}

.nav-link.activo {
  background-color: var(--color-acento);
  color: #ffffff;
}

/* Footer */
#footer-sitio {
  background-color: var(--color-fondo-alt);
  border-top: 1px solid var(--color-borde);
  margin-top: 64px;
  padding: 32px 0;
}

.footer-interno {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  justify-content: space-between;
  color: var(--color-texto-claro);
  font-size: 0.9rem;
}

/* Responsive: menú apilado en pantallas chicas */
@media (max-width: 720px) {
  .header-interno {
    flex-direction: column;
    height: auto;
    padding: 16px 24px;
    gap: 12px;
  }

  .nav-lista {
    flex-wrap: wrap;
    justify-content: center;
  }

  .footer-interno {
    flex-direction: column;
    text-align: center;
  }
}