.connector {
  --flow-accent: var(--ifm-color-primary);
  --flow-coral: #f17865;
  --flow-head: var(--diagram-ink, var(--ifm-font-color-base));
  --flow-line: var(--diagram-line, var(--ifm-color-emphasis-300));
  --flow-rail: color-mix(in srgb, var(--flow-line) 68%, var(--flow-head));
  position: relative;
  display: grid;
  align-content: center;
  justify-items: center;
  gap: 0.22rem;
  min-width: 0;
  color: var(--flow-head);
}

.label {
  z-index: 1;
  max-width: 100%;
  padding: 0.17rem 0.36rem;
  border: 1px solid color-mix(in srgb, var(--flow-accent) 32%, var(--flow-line));
  border-radius: 999px;
  color: var(--diagram-muted, var(--ifm-color-emphasis-700));
  background: var(--diagram-panel, var(--ifm-background-surface-color));
  font-family: var(--font-mono);
  font-size: 0.5rem;
  font-weight: 650;
  line-height: 1;
  text-align: center;
  white-space: nowrap;
}

.track {
  position: relative;
  overflow: hidden;
  display: block;
  width: calc(100% + 0.5rem);
  height: 1.1rem;
  margin-inline: -0.25rem;
}

.rail {
  position: absolute;
  top: 50%;
  right: 0.18rem;
  left: 0.18rem;
  height: 2px;
  background: var(--flow-rail);
  transform: translateY(-50%);
}

.beam {
  position: absolute;
  top: calc(50% - 1.5px);
  left: 0.23rem;
  width: 48%;
  height: 3px;
  border-radius: 999px;
  background: linear-gradient(90deg, transparent, var(--flow-coral) 34%, var(--flow-accent) 68%, transparent);
  filter: drop-shadow(0 0 0.28rem color-mix(in srgb, var(--flow-accent) 48%, transparent));
  animation: flow-beam-horizontal 2.4s cubic-bezier(0.4, 0, 0.2, 1) infinite;
  animation-delay: var(--flow-delay);
}

.vertical {
  min-height: 3rem;
}

.vertical .track {
  width: 1.1rem;
  height: 2.6rem;
  margin-inline: 0;
}

.vertical .rail {
  top: 0.16rem;
  right: auto;
  bottom: 0.16rem;
  left: 50%;
  width: 2px;
  height: auto;
  transform: translateX(-50%);
}

.vertical .beam {
  top: 0.23rem;
  left: calc(50% - 1.5px);
  width: 3px;
  height: 48%;
  background: linear-gradient(180deg, transparent, var(--flow-coral) 46%, var(--flow-accent));
  animation-name: flow-beam-vertical;
}

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

@keyframes flow-beam-horizontal {
  0% {
    opacity: 0;
    transform: translateX(-35%);
  }

  18%,
  72% {
    opacity: 1;
  }

  100% {
    opacity: 0;
    transform: translateX(155%);
  }
}

@keyframes flow-beam-vertical {
  0% {
    opacity: 0;
    transform: translateY(-35%);
  }

  18%,
  72% {
    opacity: 1;
  }

  100% {
    opacity: 0;
    transform: translateY(155%);
  }
}

@media (max-width: 900px) {
  .connector:not(.vertical) {
    min-height: 3rem;
  }

  .connector:not(.vertical) .track {
    width: 1.1rem;
    height: 2.6rem;
    margin-inline: 0;
  }

  .connector:not(.vertical) .rail {
    top: 0.16rem;
    right: auto;
    bottom: 0.16rem;
    left: 50%;
    width: 2px;
    height: auto;
    transform: translateX(-50%);
  }

  .connector:not(.vertical) .beam {
    top: 0.23rem;
    left: calc(50% - 1.5px);
    width: 3px;
    height: 48%;
    background: linear-gradient(180deg, transparent, var(--flow-coral) 46%, var(--flow-accent));
    animation-name: flow-beam-vertical;
  }
}

@media (prefers-reduced-motion: reduce) {
  .beam {
    opacity: 1;
    animation: none;
  }
}