:root {
  --bg: #0B0B0B;
  --ink: #F2F2F2;
  --ink-muted: #8A8A8A;
  --hairline: rgba(255, 255, 255, 0.14);
  --hairline-strong: rgba(255, 255, 255, 0.28);
  --accent: #E0281E;
  color-scheme: dark;
  font-family: "Noto Sans TC", "PingFang TC", sans-serif;
  color: var(--ink);
  background: var(--bg);
}

* {
  box-sizing: border-box;
  border-radius: 0;
}

html,
body,
#graph {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: var(--bg);
}

body {
  position: relative;
}

button,
input {
  font: inherit;
}

button:focus-visible,
input:focus-visible,
a:focus-visible {
  outline: 1px solid var(--ink);
  outline-offset: 3px;
}

[hidden] {
  display: none !important;
}

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

.graph-shell {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

#graph {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
  cursor: grab;
}

#graph:active {
  cursor: grabbing;
}

#graph.has-node-hover {
  cursor: pointer;
}

.masthead,
.hint {
  position: absolute;
  z-index: 2;
  left: clamp(20px, 3vw, 42px);
  pointer-events: none;
}

.masthead {
  top: clamp(18px, 3vw, 38px);
}

.masthead h1 {
  margin: 0;
  color: var(--ink);
  font-family: "Noto Sans TC", "PingFang TC", sans-serif;
  font-size: clamp(2rem, 3.4vw, 3.2rem);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.05em;
}

.masthead > p {
  margin: 10px 0 0;
}

.masthead .masthead__annotation {
  color: var(--ink-muted);
  font-family: "Space Mono", "Noto Sans TC", monospace;
  font-size: clamp(10px, 1vw, 12px);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.masthead .stats {
  margin-top: 7px;
  color: var(--ink-muted);
  font-family: "Space Mono", "Noto Sans TC", monospace;
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0;
}

/* Degraded data is a factual state, not an alarm — the accent already means
   "this line is saying something", so it carries the warning too. */
.masthead .stats.is-degraded {
  color: var(--accent);
}

.hint {
  bottom: clamp(18px, 3vw, 34px);
  margin: 0;
  color: var(--ink-muted);
  font-family: "Space Mono", "Noto Sans TC", monospace;
  font-size: 11px;
  letter-spacing: 0.02em;
}

.hint::first-letter {
  color: var(--accent);
}

.search-control {
  position: absolute;
  z-index: 4;
  top: clamp(20px, 3vw, 38px);
  right: clamp(20px, 3vw, 42px);
  width: min(310px, calc(100vw - 40px));
}

.search-control input {
  width: 100%;
  height: 42px;
  padding: 0 13px;
  border: 1px solid var(--hairline);
  color: var(--ink);
  background: var(--bg);
  appearance: none;
}

.search-control input:focus {
  border-color: var(--hairline-strong);
}

.search-control input::placeholder {
  color: var(--ink-muted);
  font-family: "Space Mono", "Noto Sans TC", monospace;
  opacity: 1;
}

.search-control input::-webkit-search-cancel-button {
  filter: grayscale(1);
}

.search-results {
  max-height: min(400px, calc(100vh - 100px));
  margin-top: 6px;
  padding: 0;
  overflow-y: auto;
  border: 1px solid var(--hairline);
  background: var(--bg);
}

.search-result {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: 44px;
  padding: 7px 10px 7px 9px;
  border: 0;
  border-bottom: 1px solid var(--hairline);
  border-left: 2px solid transparent;
  color: var(--ink);
  text-align: left;
  background: var(--bg);
  cursor: pointer;
}

.search-result:last-child {
  border-bottom: 0;
}

.search-result:hover {
  background: #151515;
}

.search-result.is-active {
  border-left-color: var(--accent);
  background: #151515;
}

.search-result__copy {
  display: grid;
  min-width: 0;
}

.search-result__name {
  overflow: hidden;
  font-size: 13px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.search-result__owner {
  margin-top: 2px;
  color: var(--ink-muted);
  font-family: "Space Mono", "Noto Sans TC", monospace;
  font-size: 10px;
}

.search-result__type {
  flex: none;
  margin-left: 12px;
  padding: 2px 6px;
  border: 1px solid var(--hairline);
  color: var(--ink-muted);
  font-family: "Space Mono", "Noto Sans TC", monospace;
  font-size: 10px;
}

.settings-relations {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.settings-toggle {
  position: absolute;
  z-index: 5;
  right: clamp(18px, 3vw, 34px);
  bottom: clamp(18px, 3vw, 30px);
  display: grid;
  width: 44px;
  height: 44px;
  padding: 0;
  place-items: center;
  border: 1px solid var(--hairline);
  color: var(--ink-muted);
  font-size: 19px;
  line-height: 1;
  background: var(--bg);
  cursor: pointer;
}

.settings-toggle:hover,
.settings-toggle[aria-expanded="true"] {
  border-color: var(--hairline-strong);
  color: var(--ink);
}

/* Sits immediately left of ⚙ so the two read as one control cluster. The rungs
   are ordered 廠牌 → 藝人 → 作品; the active one and everything below it read
   as reached, so the control doubles as a depth indicator. */
.depth-ladder {
  position: absolute;
  z-index: 5;
  right: calc(clamp(18px, 3vw, 34px) + 52px);
  bottom: clamp(18px, 3vw, 30px);
  display: inline-flex;
  align-items: stretch;
  height: 44px;
  border: 1px solid var(--hairline);
  background: var(--bg);
}

.depth-ladder__caption {
  display: inline-flex;
  align-items: center;
  padding: 0 9px;
  border-right: 1px solid var(--hairline);
  color: var(--ink-muted);
  font-family: "Space Mono", monospace;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.14em;
}

.depth-ladder button {
  min-width: 44px;
  padding: 0 10px;
  border: 0;
  border-right: 1px solid var(--hairline);
  color: var(--ink-muted);
  font-family: "Noto Sans TC", sans-serif;
  font-size: 12px;
  line-height: 1;
  white-space: nowrap;
  background: transparent;
  cursor: pointer;
}

.depth-ladder button:last-child {
  border-right: 0;
}

.depth-ladder button:hover {
  color: var(--ink);
}

.depth-ladder button[aria-pressed="true"] {
  color: var(--bg);
  background: var(--ink);
}

.depth-ladder button.is-reached {
  color: var(--ink);
}

.settings-popover {
  position: absolute;
  z-index: 5;
  right: clamp(18px, 3vw, 34px);
  bottom: clamp(76px, calc(3vw + 58px), 88px);
  width: min(300px, calc(100vw - 36px));
  max-height: calc(100vh - 118px);
  padding: 4px 18px;
  overflow-y: auto;
  overscroll-behavior: contain;
  border: 1px solid var(--hairline);
  background: var(--bg);
}

.settings-popover:not([hidden]) {
  animation: settings-popover-in 120ms linear;
}

@keyframes settings-popover-in {
  from {
    opacity: 0;
    transform: translateY(4px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.settings-group {
  padding: 14px 0;
}

.settings-group__heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 25px;
  margin-bottom: 12px;
  padding-bottom: 7px;
  border-bottom: 1px solid var(--hairline);
}

.settings-group__heading h2,
.panel-section__title {
  font-family: "Space Mono", "Noto Sans TC", monospace;
  text-transform: uppercase;
}

.settings-group__heading h2 {
  margin: 0;
  color: var(--ink-muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.annotation-en {
  color: var(--ink-muted);
  font-family: "Space Mono", monospace;
  font-size: 0.92em;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.settings-reset {
  min-height: 26px;
  padding: 2px 0 2px 8px;
  border: 0;
  color: var(--ink-muted);
  font-family: "Space Mono", "Noto Sans TC", monospace;
  font-size: 10px;
  background: transparent;
  cursor: pointer;
}

.settings-reset:hover {
  color: var(--ink);
}

.settings-slider {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 6px 10px;
  color: var(--ink);
  font-family: "Space Mono", "Noto Sans TC", monospace;
  font-size: 10px;
}

.settings-slider + .settings-slider {
  margin-top: 12px;
}

.settings-slider output {
  color: var(--ink-muted);
  font-family: "Space Mono", monospace;
  font-size: 10px;
  font-variant-numeric: tabular-nums;
}

.settings-slider input[type="range"] {
  grid-column: 1 / -1;
  width: 100%;
  height: 12px;
  margin: 0;
  background: transparent;
  appearance: none;
  cursor: pointer;
}

.settings-slider input[type="range"]::-webkit-slider-runnable-track {
  width: 100%;
  height: 2px;
  background: var(--hairline-strong);
}

.settings-slider input[type="range"]::-webkit-slider-thumb {
  width: 12px;
  height: 12px;
  margin-top: -5px;
  border: 0;
  background: var(--ink);
  appearance: none;
}

.settings-slider input[type="range"]::-moz-range-track {
  width: 100%;
  height: 2px;
  border: 0;
  background: var(--hairline-strong);
}

.settings-slider input[type="range"]::-moz-range-thumb {
  width: 12px;
  height: 12px;
  border: 0;
  background: var(--ink);
}

.view-toggle {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 1px solid var(--hairline);
  background: var(--bg);
}

.view-toggle button {
  min-height: 34px;
  padding: 5px 10px;
  border: 0;
  color: var(--ink-muted);
  font-family: "Space Mono", "Noto Sans TC", monospace;
  font-size: 10px;
  background: var(--bg);
  cursor: pointer;
}

.view-toggle button + button {
  border-left: 1px solid var(--hairline);
}

.view-toggle button[aria-pressed="true"] {
  color: var(--ink);
  background: #151515;
}

.view-toggle button:hover {
  color: var(--ink);
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 5px 8px;
  border: 1px solid var(--hairline);
  color: var(--ink);
  font-family: "Space Mono", "Noto Sans TC", monospace;
  font-size: 10px;
  line-height: 1;
  white-space: nowrap;
  background: var(--bg);
  cursor: pointer;
}

.filter-chip:hover {
  border-color: var(--hairline-strong);
}

.filter-chip.is-off {
  border-style: dashed;
  color: var(--ink-muted);
}

.panel-connection {
  padding: 10px 0;
  border-bottom: 1px solid var(--hairline);
}

.panel-connection:last-child {
  border-bottom: 0;
}

.panel-connection__line {
  margin: 0 0 6px;
  color: var(--ink);
  font-size: 13px;
  line-height: 1.6;
}

.panel-connection__note {
  margin: 0 0 6px;
  color: var(--ink-muted);
  font-size: 12px;
  line-height: 1.7;
}

.panel-connection__meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 4px;
}

.panel-connection__kind {
  color: var(--ink-muted);
  font-family: "Space Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.panel-jump {
  display: block;
  width: 100%;
  margin-top: 8px;
  padding: 9px 10px;
  border: 1px solid var(--hairline);
  color: var(--ink);
  font-family: "Noto Sans TC", sans-serif;
  font-size: 12px;
  text-align: left;
  background: transparent;
  cursor: pointer;
}

.panel-jump:hover {
  border-color: var(--hairline-strong);
}

.masthead__scope {
  margin: 2px 0 0;
  color: var(--ink-muted);
  font-size: 11px;
  letter-spacing: 0.04em;
}

.edge-swatch {
  display: inline-block;
  width: 18px;
  height: 0;
  margin-right: 6px;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.edge-swatch--sample {
  border-top: 1px dashed rgba(224, 40, 30, 0.8);
}

.edge-swatch--collab {
  border-top-color: rgba(255, 255, 255, 0.35);
}

.edge-swatch--produced {
  border-top: 1px dashed rgba(255, 255, 255, 0.22);
}

.edge-swatch--label {
  border-top-color: rgba(255, 255, 255, 0.16);
}

.edge-swatch--member {
  border-top: 1px dashed rgba(255, 255, 255, 0.34);
}

.edge-swatch--influence {
  border-top: 1px dotted rgba(255, 255, 255, 0.15);
}

.edge-swatch--unknown {
  border-top: 1px dashed rgba(224, 40, 30, 0.4);
}

.info-panel {
  position: absolute;
  z-index: 6;
  top: 0;
  right: 0;
  width: 360px;
  height: 100%;
  overflow-y: auto;
  overscroll-behavior: contain;
  border-left: 1px solid var(--hairline-strong);
  background: var(--bg);
}

.info-panel__handle {
  display: none;
}

.info-panel__close {
  position: absolute;
  z-index: 1;
  top: 12px;
  right: 12px;
  display: grid;
  width: 36px;
  height: 36px;
  padding: 0 0 3px;
  place-items: center;
  border: 1px solid var(--hairline);
  color: var(--ink-muted);
  font-size: 23px;
  line-height: 1;
  background: var(--bg);
  cursor: pointer;
}

.info-panel__close:hover {
  border-color: var(--hairline-strong);
  color: var(--ink);
}

.info-panel__content {
  padding: 58px 26px 40px;
}

.panel-header {
  padding-bottom: 24px;
}

.panel-title {
  max-width: 265px;
  margin: 0;
  color: var(--ink);
  font-family: "Noto Sans TC", "PingFang TC", sans-serif;
  font-size: 27px;
  font-weight: 900;
  line-height: 1.3;
  letter-spacing: -0.03em;
}

.panel-alternate,
.panel-facts,
.panel-bio,
.panel-note {
  margin: 0;
}

.panel-alternate {
  margin-top: 6px;
  color: var(--ink-muted);
  font-family: "Space Mono", "Noto Sans TC", monospace;
  font-size: 10px;
  line-height: 1.55;
}

.panel-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 14px;
}

.panel-metrics,
.panel-awards {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
}

.panel-metrics__note {
  color: var(--ink-muted);
  font-family: "Space Mono", "Noto Sans TC", monospace;
  font-size: 10px;
  line-height: 1.5;
}

.panel-chip.is-metric,
.panel-chip.is-award {
  border-color: var(--hairline-strong);
  color: var(--ink);
  font-family: "Space Mono", "Noto Sans TC", monospace;
  font-variant-numeric: tabular-nums;
}

.panel-chip.is-award {
  line-height: 1.35;
}

.panel-context {
  margin: 10px 0 0;
  color: var(--ink-muted);
  font-size: 11px;
  font-style: normal;
  line-height: 1.65;
}

.panel-node-note {
  margin-top: 10px;
}

.panel-story {
  margin-top: 12px;
  padding: 10px 0 0;
  border-top: 1px solid var(--hairline);
}

.panel-story__text {
  margin: 0;
  color: var(--ink);
  font-size: 12px;
  line-height: 1.75;
}

.panel-story__meta {
  margin-top: 6px;
}

.panel-chip {
  display: inline-flex;
  align-items: center;
  min-height: 20px;
  padding: 2px 6px;
  border: 1px solid var(--hairline);
  color: var(--ink-muted);
  font-family: "Space Mono", "Noto Sans TC", monospace;
  font-size: 10px;
  line-height: 1;
  background: var(--bg);
}

.panel-chip.type-person,
.panel-chip.type-song,
.panel-chip.type-album,
.panel-chip.type-label {
  border-color: var(--hairline-strong);
  color: var(--ink);
}

.panel-chip.is-outer,
.panel-chip.is-unknown {
  border-style: dashed;
  color: var(--ink-muted);
}

.panel-facts {
  margin-top: 13px;
  color: var(--ink-muted);
  font-family: "Space Mono", "Noto Sans TC", monospace;
  font-size: 10px;
  letter-spacing: 0.02em;
}

.panel-bio {
  margin-top: 16px;
  color: var(--ink);
  font-size: 13px;
  line-height: 1.8;
}

.panel-section {
  padding: 20px 0;
  border-top: 1px solid var(--hairline);
}

.panel-section__title {
  margin: 0 0 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--hairline);
  color: var(--ink);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.membership-row + .membership-row,
.relation-row + .relation-row {
  margin-top: 15px;
}

.works-list {
  display: grid;
  gap: 12px;
}

.timeline-list {
  display: grid;
  gap: 13px;
}

.timeline-row {
  display: grid;
  grid-template-columns: 3px 48px minmax(0, 1fr);
  gap: 9px;
  align-items: stretch;
  color: var(--ink-muted);
}

/* Sources are appended as a fourth child of a three-column grid, so without
   this they land in the 3px rail column and overflow the timeline. */
.timeline-row > .panel-sources {
  grid-column: 3;
}

.timeline-dot {
  width: 1px;
  height: 100%;
  min-height: 18px;
  background: var(--hairline-strong);
}

.timeline-year {
  color: var(--ink-muted);
  font-family: "Space Mono", monospace;
  font-size: 10px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 1.7;
}

.timeline-event {
  margin: 0;
  color: var(--ink-muted);
  font-size: 11px;
  line-height: 1.7;
}

.timeline-row.is-major .timeline-dot {
  width: 3px;
  background: var(--accent);
}

.timeline-row.is-major .timeline-year,
.timeline-row.is-major .timeline-event {
  color: var(--ink);
}

.timeline-row.is-major .timeline-event {
  font-weight: 700;
}

.panel-quote {
  margin: 0;
  padding: 2px 0 2px 14px;
  border-left: 2px solid var(--ink);
}

.panel-quote + .panel-quote {
  margin-top: 16px;
}

.panel-quote__text {
  margin: 0;
  color: var(--ink);
  font-size: 12px;
  font-style: normal;
  line-height: 1.75;
}

.panel-quote__attribution {
  margin-top: 7px;
  color: var(--ink-muted);
  font-family: "Space Mono", "Noto Sans TC", monospace;
  font-size: 10px;
  line-height: 1.55;
}

.work-link {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  width: 100%;
  min-height: 32px;
  padding: 2px 0;
  border: 0;
  color: var(--ink);
  text-align: left;
  background: transparent;
  cursor: pointer;
}

.work-link:hover .work-title {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.work-title {
  font-size: 13px;
}

.work-year,
.work-producers {
  color: var(--ink-muted);
  font-family: "Space Mono", "Noto Sans TC", monospace;
  font-size: 10px;
}

.work-producers {
  margin: 1px 0 0;
  line-height: 1.5;
}

.work-children {
  display: grid;
  gap: 4px;
  margin: 5px 0 0 7px;
  padding-left: 12px;
  border-left: 1px solid var(--hairline);
}

.membership-name,
.unresolved-name {
  font-size: 13px;
}

.panel-note {
  margin-top: 5px;
  color: var(--ink-muted);
  font-size: 10px;
  line-height: 1.65;
}

.relation-row__heading {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
}

.relation-link {
  min-height: 28px;
  padding: 1px 0;
  border: 0;
  color: var(--ink);
  font-size: 13px;
  text-align: left;
  background: transparent;
  cursor: pointer;
}

.relation-link:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.relation-year {
  color: var(--ink-muted);
  font-family: "Space Mono", monospace;
  font-size: 10px;
}

/* 唱片約 / 經紀約 / 創辦人 — the distinction the data always carried in prose
   and the interface used to flatten into one word. */
.relation-role {
  padding: 1px 5px;
  border: 1px solid var(--hairline);
  color: var(--ink-muted);
  font-family: "Space Mono", "Noto Sans TC", monospace;
  font-size: 9px;
  letter-spacing: 0.06em;
}

.panel-chip.confidence {
  min-height: 0;
  padding: 0;
  border: 0;
  color: var(--ink-muted);
  background: transparent;
}

.panel-chip.confidence-高 {
  color: var(--ink);
}

.panel-chip.confidence-中高,
.panel-chip.confidence-中,
.panel-chip.confidence-低 {
  color: var(--ink-muted);
}

.panel-sources {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 10px;
  margin-top: 7px;
}

.panel-source-link,
.panel-source-internal {
  color: var(--ink-muted);
  font-family: "Space Mono", "Noto Sans TC", monospace;
  font-size: 10px;
}

.panel-source-link {
  text-decoration: none;
}

.panel-source-link:hover {
  color: var(--ink);
  text-decoration: underline;
}

@media (max-width: 640px) {
  .masthead {
    top: 14px;
    right: 16px;
    left: 16px;
  }

  .masthead h1 {
    font-size: 2rem;
  }

  .masthead > p {
    margin-top: 5px;
  }

  .masthead .stats {
    margin-top: 5px;
    font-size: 9px;
  }

  .search-control {
    top: 105px;
    right: 16px;
    left: 16px;
    width: auto;
  }

  .search-control input {
    height: 44px;
  }

  .search-results {
    max-height: calc(100vh - 175px);
  }

  .settings-toggle {
    right: 16px;
    bottom: 48px;
  }

  .depth-ladder {
    right: 68px;
    bottom: 48px;
    height: 40px;
  }

  .depth-ladder__caption {
    display: none;
  }

  .depth-ladder button {
    min-width: 40px;
    padding: 0 8px;
  }

  .settings-popover {
    right: 12px;
    bottom: 102px;
    left: 12px;
    width: auto;
    max-height: calc(100vh - 172px);
    animation-name: settings-sheet-in;
  }

  @keyframes settings-sheet-in {
    from {
      opacity: 0;
      transform: translateY(12px);
    }

    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  .filter-chip {
    min-height: 40px;
    padding: 6px 8px;
  }

  .hint {
    right: 16px;
    bottom: 15px;
    left: 16px;
    font-size: 10px;
    text-align: center;
  }

  .info-panel {
    top: auto;
    bottom: 0;
    left: 0;
    width: 100%;
    height: auto;
    max-height: 55vh;
    border-top: 1px solid var(--hairline-strong);
    border-left: 0;
  }

  .info-panel__handle {
    position: sticky;
    top: 0;
    z-index: 2;
    display: block;
    width: 38px;
    height: 2px;
    margin: 9px auto -11px;
    background: var(--hairline-strong);
  }

  .info-panel__close {
    position: sticky;
    top: 8px;
    float: right;
    margin-right: 8px;
  }

  .info-panel__content {
    padding: 24px 22px 34px;
  }

  .panel-title {
    max-width: calc(100% - 48px);
    font-size: 24px;
  }

  .relation-link,
  .work-link {
    min-height: 40px;
  }

  .panel-source-link {
    display: inline-flex;
    min-height: 40px;
    align-items: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
  }
}