/* Vantora Back to Top button */
.vantora-back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 9998;
  width: 52px;
  height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(125, 122, 255, 0.48);
  border-radius: 999px;
  background: linear-gradient(145deg, rgba(12, 22, 42, 0.96), rgba(25, 18, 62, 0.96));
  color: #ffffff;
  box-shadow: 0 14px 36px rgba(2, 8, 23, 0.42), 0 0 28px rgba(98, 87, 255, 0.22);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px) scale(0.94);
  pointer-events: none;
  transition: opacity .22s ease, visibility .22s ease, transform .22s ease,
              border-color .22s ease, box-shadow .22s ease;
}

.vantora-back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

.vantora-back-to-top:hover {
  border-color: rgba(143, 231, 255, 0.82);
  box-shadow: 0 16px 42px rgba(2, 8, 23, 0.5), 0 0 34px rgba(91, 102, 255, 0.38);
  transform: translateY(-3px) scale(1.03);
}

.vantora-back-to-top:focus-visible {
  outline: 3px solid #8fe7ff;
  outline-offset: 4px;
}

.vantora-back-to-top__icon {
  display: block;
  font-size: 26px;
  font-weight: 800;
  line-height: 1;
  transform: translateY(-1px);
}

.vantora-visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

@media (max-width: 640px) {
  .vantora-back-to-top {
    right: 16px;
    bottom: 18px;
    width: 46px;
    height: 46px;
  }
  .vantora-back-to-top__icon { font-size: 23px; }
}

@media (prefers-reduced-motion: reduce) {
  .vantora-back-to-top { transition: none; }
}