#portada {
  position: relative;
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 2rem;
  overflow: hidden;
}

/* Imagen de fondo (preparada para cargar desde Firebase) */
.fondo-portada {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  z-index: -1;
  opacity: 0.3;
}

#titulo-principal {
  font-size: 3rem;
  font-weight: 600;
}

#titulo-principal a {
  text-decoration: none;
  color: inherit;
  transition: color 0.3s ease;
}

#titulo-principal a:hover {
  color: #007bff;
}

#subtitulo {
  font-size: 1.2rem;
  color: #333;
  margin-top: 1rem;
}