/* === BOTÓN SUBIR (IGUAL ESTILO DORADO) === */
#scrollTopBtn {
  width: 48px;
  height: 48px;
  background: linear-gradient(145deg, #0a0a0a 0%, #141414 100%);
  border: 1px solid #ffb300;
  border-radius: 8px;
  color: #fff;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 0 8px rgba(255, 179, 0, 0.2);
}

#scrollTopBtn:hover {
  background: #ffb300;
  color: #000;
  box-shadow: 0 0 16px #ffb300;
  transform: translateY(-2px);
}

/* Para que no se vea hasta que hagas scroll */
#scrollTopBtn {
  opacity: 0;
  pointer-events: none;
}

#scrollTopBtn.show {
  opacity: 1;
  pointer-events: auto;
  animation: fadeInUp 0.3s ease forwards;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}