.scroll-cue {
  position: fixed;
  left: 50%;
  bottom: calc(20px + env(safe-area-inset-bottom, 0px));
  transform: translateX(-50%) translateY(16px);
  z-index: 90;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 0;
  border: none;
  background: transparent;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition:
    opacity 500ms var(--ease-silk),
    transform 500ms var(--ease-silk),
    visibility 500ms;
}

.scroll-cue.is-visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.scroll-cue.is-hidden {
  opacity: 0;
  pointer-events: none;
}

.scroll-cue[hidden] {
  display: none !important;
}

.scroll-cue-ring {
  position: absolute;
  top: 2px;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 1px solid rgba(201, 191, 255, 0.35);
  background: rgba(11, 11, 18, 0.72);
  backdrop-filter: blur(14px);
  box-shadow:
    0 0 30px rgba(123, 97, 255, 0.2),
    inset 0 0 20px rgba(201, 191, 255, 0.06);
  transition: box-shadow 300ms var(--ease-silk), border-color 300ms;
}

.scroll-cue:hover .scroll-cue-ring,
.scroll-cue:focus-visible .scroll-cue-ring {
  border-color: var(--primary);
  box-shadow:
    0 0 40px rgba(123, 97, 255, 0.45),
    inset 0 0 24px rgba(201, 191, 255, 0.12);
}

.scroll-cue-arrow {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  font-size: 1.35rem;
  color: var(--primary);
  animation: cueBounce 2.4s var(--ease-silk) infinite;
}

.scroll-cue-label {
  position: relative;
  z-index: 1;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--outline);
  white-space: nowrap;
}

.scroll-cue.is-animating .scroll-cue-arrow {
  animation: none;
  opacity: 0.5;
}

.scroll-cue.is-finish .scroll-cue-arrow {
  animation-duration: 3s;
}

@keyframes cueBounce {
  0%,
  100% {
    transform: translateY(0);
    opacity: 0.85;
  }
  50% {
    transform: translateY(7px);
    opacity: 1;
  }
}

[data-theme="light"] .scroll-cue-ring {
  background: var(--primary);
  border-color: rgba(90, 69, 212, 0.35);
  box-shadow:
    0 0 28px rgba(90, 69, 212, 0.22),
    inset 0 0 12px rgba(255, 255, 255, 0.15);
}

[data-theme="light"] .scroll-cue-arrow {
  color: var(--bg);
}

[data-theme="light"] .scroll-cue:hover .scroll-cue-ring,
[data-theme="light"] .scroll-cue:focus-visible .scroll-cue-ring {
  border-color: var(--primary);
  box-shadow: 0 0 32px rgba(90, 69, 212, 0.2);
}

[data-theme="light"] .scroll-cue-label {
  color: var(--muted);
}

@media (prefers-reduced-motion: reduce) {
  .scroll-cue-arrow {
    animation: none;
  }
}