.scroll-indicator {
  --scroll-indicator-dot-size: clamp(0.625rem, 0.656vw, 0.7875rem);
  --scroll-indicator-height: clamp(1.5rem, 1.594vw, 1.9125rem);
  --scroll-indicator-width: var(--scroll-indicator-dot-size);
  --scroll-indicator-overlap: clamp(-0.1875rem, -0.187vw, -0.225rem);
  --scroll-indicator-duration: 3s;
  --scroll-indicator-stagger: 0.2s;

  display: flex;
  flex-direction: column;
  align-items: center;
  width: var(--scroll-indicator-width);
  height: var(--scroll-indicator-height);
}

.scroll-indicator__dot {
  flex-shrink: 0;
  width: var(--scroll-indicator-dot-size);
  height: var(--scroll-indicator-dot-size);
  border-radius: 50%;
  background-color: var(--color-primary);
  opacity: 0;
  animation: scroll-indicator-dot var(--scroll-indicator-duration) ease-in-out infinite;
}

.scroll-indicator__dot:nth-child(1) {
  --scroll-indicator-dot-opacity: 0.2;
  animation-delay: 0s;
}

.scroll-indicator__dot:nth-child(2) {
  --scroll-indicator-dot-opacity: 0.6;
  margin-top: var(--scroll-indicator-overlap);
  animation-delay: var(--scroll-indicator-stagger);
}

.scroll-indicator__dot:nth-child(3) {
  --scroll-indicator-dot-opacity: 1;
  margin-top: var(--scroll-indicator-overlap);
  animation-delay: calc(var(--scroll-indicator-stagger) * 2);
}

@keyframes scroll-indicator-dot {
  0% {
    opacity: 0;
  }

  18% {
    opacity: var(--scroll-indicator-dot-opacity);
  }

  42% {
    opacity: var(--scroll-indicator-dot-opacity);
  }

  62% {
    opacity: 0;
  }

  100% {
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .scroll-indicator__dot {
    animation: none;
    opacity: var(--scroll-indicator-dot-opacity);
  }
}