/* === BOTÓN SUBIR ARRIBA === */
#btnSubir {
  position: fixed;
  bottom: 25px;
  right: 25px;
  background: #FFD700;
  color: #000;
  border: none;
  border-radius: 50%;
  width: 50px;
  height: 50px;
  font-size: 24px;
  font-weight: bold;
  cursor: pointer;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s, transform 0.3s;
  z-index: 9998;
}

#btnSubir:hover {
  transform: scale(1.1);
  background: #ffea70;
}

#btnSubir.visible {
  opacity: 1;
  pointer-events: all;
}



/* === BOTÓN SUBIR ARRIBA === */
#btnSubir {
  position: fixed;
  bottom: 25px;
  right: 25px;
  background: #FFD700;
  border: none;
  border-radius: 50%;
  width: 55px;
  height: 55px;
  cursor: pointer;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s, transform 0.3s, background 0.3s;
  z-index: 9998;
  display: flex;
  align-items: center;
  justify-content: center;
}

#btnSubir.visible {
  opacity: 1;
  pointer-events: all;
}

#btnSubir:hover {
  transform: scale(1.1);
  background: #ffea70;
}

/* Ícono dentro del botón */
.icono-flecha {
  width: 28px;
  height: 28px;
  filter: brightness(0);
}