/* Scroll-to-top FAB — all public pages */
.zk-scroll-top {
  --zk-st-size: 48px;
  position: fixed;
  z-index: calc(var(--site-fab-z-index, 1002) + 4);
  right: max(14px, env(safe-area-inset-right, 0px));
  bottom: max(22px, calc(env(safe-area-inset-bottom, 0px) + 18px));
  width: var(--zk-st-size);
  height: var(--zk-st-size);
  border: 1px solid rgba(15, 23, 42, 0.1);
  border-radius: 999px;
  padding: 0;
  margin: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: #0f766e;
  background:
    linear-gradient(160deg, rgba(255, 255, 255, 0.96) 0%, rgba(240, 253, 250, 0.94) 100%);
  box-shadow:
    0 10px 28px rgba(15, 23, 42, 0.14),
    0 1px 0 rgba(255, 255, 255, 0.8) inset;
  opacity: 0;
  transform: translate3d(0, 12px, 0) scale(0.92);
  pointer-events: none;
  transition:
    opacity 0.22s ease,
    transform 0.22s ease,
    box-shadow 0.22s ease,
    background 0.22s ease,
    color 0.22s ease;
  -webkit-tap-highlight-color: transparent;
}

.zk-scroll-top.is-visible {
  opacity: 1;
  transform: translate3d(0, 0, 0) scale(1);
  pointer-events: auto;
}

.zk-scroll-top:hover,
.zk-scroll-top:focus-visible {
  color: #fff;
  background: linear-gradient(160deg, #0d9488 0%, #0f766e 100%);
  border-color: transparent;
  box-shadow:
    0 14px 32px rgba(15, 118, 110, 0.35),
    0 1px 0 rgba(255, 255, 255, 0.25) inset;
  outline: none;
}

.zk-scroll-top:active {
  transform: translate3d(0, 1px, 0) scale(0.96);
}

.zk-scroll-top__icon {
  display: block;
}

/* Keep clear of the right FAB island on desktop */
@media (min-width: 900px) {
  .zk-scroll-top {
    right: max(18px, env(safe-area-inset-right, 0px));
    bottom: max(28px, calc(env(safe-area-inset-bottom, 0px) + 24px));
  }

  body:has(#siteFabStack):not(:has(#siteFabStack.site-fab-stack--world-blabla)) .zk-scroll-top {
    right: max(78px, calc(env(safe-area-inset-right, 0px) + 64px));
  }
}

@media (max-width: 899px) {
  .zk-scroll-top {
    --zk-st-size: 44px;
    /* Sit above the mobile FAB island (country); World overrides in site-home-fab.css */
    bottom: max(88px, calc(env(safe-area-inset-bottom, 0px) + 76px));
  }

  body:has(#siteFabStack.site-fab-stack--world-blabla) .zk-scroll-top,
  html.market-is-world .zk-scroll-top {
    bottom: max(22px, calc(env(safe-area-inset-bottom, 0px) + 18px));
  }
}

@media (prefers-reduced-motion: reduce) {
  .zk-scroll-top {
    transition: opacity 0.15s ease;
  }
}