/* Botón global "Volver arriba" — Grupo Cejuro */
.gmc-backtotop {
  position: fixed;
  right: 22px;
  bottom: 22px;
  width: 52px;
  height: 52px;
  min-width: 52px;
  min-height: 52px;
  padding: 0;
  margin: 0;
  border: 0;
  border-radius: 50%;
  background: #000;
  color: #fff;
  display: grid;
  place-items: center;
  font: 700 28px/1 Arial, sans-serif;
  cursor: pointer;
  box-shadow: 0 10px 25px rgba(0, 0, 0, .25);
  z-index: 99999;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity .25s ease, visibility .25s ease, transform .25s ease, background-color .25s ease;
}

.gmc-backtotop.show,
.gmc-backtotop.is-visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}

.gmc-backtotop:hover,
.gmc-backtotop:focus-visible {
  background: #f7c201;
  color: #000;
  transform: translateY(-3px);
  outline: none;
}

/* Cuando está junto al botón de WhatsApp, conserva la ubicación del grupo. */
.float-stack .gmc-backtotop {
  position: static;
  right: auto;
  bottom: auto;
  z-index: auto;
}

@media (max-width: 768px) {
  .gmc-backtotop {
    right: 16px;
    bottom: 16px;
    width: 48px;
    height: 48px;
    min-width: 48px;
    min-height: 48px;
    font-size: 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .gmc-backtotop { transition: none; }
}