.oakln-back-to-top {
  position: fixed;
  right: calc(var(--oakln-back-to-top-right, 28px) + env(safe-area-inset-right, 0px));
  bottom: calc(var(--oakln-back-to-top-bottom, 28px) + env(safe-area-inset-bottom, 0px));
  z-index: 60;
  width: var(--oakln-back-to-top-size, 44px);
  height: var(--oakln-back-to-top-size, 44px);
  pointer-events: none;
}

.oakln-back-to-top__button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  padding: 0;
  color: var(--oakln-back-to-top-color, #fff);
  background: var(--oakln-back-to-top-bg, #041e3a);
  border: 1px solid var(--oakln-back-to-top-border, #041e3a);
  border-radius: 50%;
  box-shadow: 0 8px 24px rgba(4, 30, 58, 0.18);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease, background 0.2s ease;
}

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

.oakln-back-to-top__button:hover {
  filter: brightness(1.08);
}

.oakln-back-to-top__button:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 3px;
}

.oakln-back-to-top__icon {
  width: 54%;
  height: 54%;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

@media (max-width: 749px) {
  .oakln-back-to-top {
    right: calc(var(--oakln-back-to-top-mobile-right, 16px) + env(safe-area-inset-right, 0px));
    bottom: calc(var(--oakln-back-to-top-mobile-bottom, 76px) + env(safe-area-inset-bottom, 0px));
    width: var(--oakln-back-to-top-mobile-size, 42px);
    height: var(--oakln-back-to-top-mobile-size, 42px);
  }

  .oakln-back-to-top[data-mb-show="false"] {
    display: none;
  }
}

@media (min-width: 750px) {
  .oakln-back-to-top[data-pc-show="false"] {
    display: none;
  }
}