/* Screen positions and anchor offsets are supplied by knowledge-labels.js. */
#knowledge-labels {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 5;
  font-family: Inter, 'Helvetica Neue', 'Noto Sans JP', sans-serif;
  font-size: 12px;
  font-weight: 400;
  line-height: 1.4;
  letter-spacing: .04em;
  color: #a1c2d1;
  color-scheme: dark;
}

#knowledge-labels button {
  all: unset;
  pointer-events: auto;
  box-sizing: border-box;
  font: inherit;
  letter-spacing: inherit;
  cursor: pointer;
}

#knowledge-labels > *,
#knowledge-labels .kl-popover,
#knowledge-labels .kl-popover * {
  pointer-events: auto;
}

#knowledge-labels > * {
  box-sizing: border-box;
}

#knowledge-labels [class^="kl-"],
#knowledge-labels [class*=" kl-"] {
  box-shadow: none;
  border-radius: 0;
}

#knowledge-labels[hidden],
#knowledge-labels [hidden] {
  display: none !important;
}

#knowledge-labels .kl-label,
#knowledge-labels .kl-cluster {
  position: absolute;
  display: block;
  white-space: nowrap;
}

#knowledge-labels .kl-label {
  padding: 2px 6px;
  line-height: 1.4;
  letter-spacing: .04em;
}

#knowledge-labels .kl-label[data-tier=selected] {
  font-size: 13px;
  font-weight: 500;
  color: #ecfaff;
  border: 1px solid var(--cyan, #8ce4fa);
  background: rgba(6, 24, 39, .72);
}

#knowledge-labels .kl-label[data-tier=related] {
  font-size: 12px;
  font-weight: 400;
  color: #cfe7f0;
  border: 1px solid rgba(137, 217, 239, .28);
  background: rgba(6, 24, 39, .6);
}

#knowledge-labels .kl-label[data-tier=normal] {
  font-size: 11px;
  font-weight: 400;
  color: #8fb0be;
  border: 0;
  background: rgba(6, 24, 39, .45);
}

#knowledge-labels .kl-label[data-tier=context] {
  font-size: 11px;
  font-weight: 400;
  color: #a9c4d0;
  border: 0;
  background: rgba(6, 24, 39, .5);
}

#knowledge-labels .kl-label[data-rank=hub] {
  font-weight: 500;
}

#knowledge-labels .kl-label[data-depth=far] {
  opacity: .55;
}

#knowledge-labels .kl-label[data-depth=mid] {
  opacity: .8;
}

#knowledge-labels .kl-label[data-depth=near],
#knowledge-labels .kl-label[data-tier=selected],
#knowledge-labels .kl-label[data-tier=related] {
  opacity: 1;
}

#knowledge-labels .kl-type {
  font-size: 11px;
  color: var(--muted, #527e90);
  margin-right: 6px;
  letter-spacing: .08em;
}

#knowledge-labels .kl-label[data-tier=selected] .kl-type {
  color: var(--cyan, #8ce4fa);
}

#knowledge-labels .kl-title {
  font-size: inherit;
}

#knowledge-labels .kl-more {
  font-size: 11px;
  color: var(--muted, #527e90);
  margin-left: 6px;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0;
}

#knowledge-labels .kl-label:hover,
#knowledge-labels .kl-label:focus-visible {
  opacity: 1;
  border: 1px solid var(--cyan, #8ce4fa);
  background: rgba(12, 27, 38, .85);
}

#knowledge-labels .kl-cluster {
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0;
  color: #cfe7f0;
  background: #142530;
  border: 1px solid var(--line, rgba(137, 217, 239, .18));
  padding: 1px 5px;
  min-width: 22px;
  text-align: center;
}

#knowledge-labels .kl-cluster:hover,
#knowledge-labels .kl-cluster:focus-visible {
  border-color: var(--cyan, #8ce4fa);
}

#knowledge-labels .kl-popover {
  position: fixed;
  width: min(320px, calc(100vw - 24px));
  background: #0f1f2b;
  border: 1px solid var(--line, rgba(137, 217, 239, .18));
  z-index: 6;
  padding: 0;
}

#knowledge-labels .kl-popover-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 11px;
  line-height: 1.7;
  color: var(--muted, #527e90);
  border-bottom: 1px solid var(--line, rgba(137, 217, 239, .18));
  padding: 6px 10px;
}

#knowledge-labels .kl-close {
  flex: none;
  width: 32px;
  height: 32px;
  font-size: 18px;
  line-height: 32px;
  text-align: center;
  background: none;
  border: 0;
  color: var(--cyan, #8ce4fa);
}

#knowledge-labels .kl-popover-list {
  list-style: none;
  margin: 0;
  padding: 0;
  max-height: 40vh;
  overflow: auto;
  scrollbar-width: thin;
  overscroll-behavior: contain;
}

#knowledge-labels .kl-item {
  display: block;
  width: 100%;
  text-align: left;
  min-height: 32px;
  padding: 6px 10px;
  font-size: 12px;
  color: #cfe7f0;
  background: none;
  border: 0;
  border-bottom: 1px solid var(--line, rgba(137, 217, 239, .18));
  overflow-wrap: anywhere;
}

#knowledge-labels .kl-item:hover,
#knowledge-labels .kl-item:focus-visible {
  background: #142530;
}

#knowledge-labels button:focus-visible {
  outline: 2px solid var(--cyan, #8ce4fa);
  outline-offset: 2px;
}

#knowledge-labels .kl-label,
#knowledge-labels .kl-cluster,
#knowledge-labels .kl-popover,
#knowledge-labels .kl-close,
#knowledge-labels .kl-item {
  transition: opacity .15s;
}

@media (pointer: coarse), (max-width: 760px) {
  #knowledge-labels .kl-cluster {
    min-width: 44px;
    min-height: 44px;
    line-height: 40px;
  }

  #knowledge-labels .kl-item {
    min-height: 44px;
  }

  #knowledge-labels .kl-label[data-tier=normal],
  #knowledge-labels .kl-label[data-tier=context] {
    font-size: 12px;
  }

  /* Absolute positioning also establishes the hit area's containing block. */
  #knowledge-labels .kl-label::before {
    content: '';
    position: absolute;
    inset: -6px;
    background: transparent;
  }
}

@media (prefers-reduced-motion: reduce) {
  #knowledge-labels .kl-label,
  #knowledge-labels .kl-cluster,
  #knowledge-labels .kl-popover,
  #knowledge-labels .kl-close,
  #knowledge-labels .kl-item {
    transition: none;
  }
}

body.immersive #knowledge-labels .kl-cluster,
body.immersive #knowledge-labels .kl-popover {
  display: none;
}

/* v15 — ナレッジ星図の context 段・ハブの太さ・奥行きと操作時の強調。 */