/* Trees page: scoped port of relaytree/claude #/lineage content. */
.inspiration-tree-page {
  --tree-bg: #f6f7f9;
  --tree-surface: #ffffff;
  --tree-surface-2: #f0f2f5;
  --tree-border: #e3e6ea;
  --tree-border-strong: #cbd2da;
  --tree-text: #1a1d21;
  --tree-text-muted: #5b6573;
  --tree-text-faint: #8a93a0;
  --tree-accent: #2f6df6;
  --tree-accent-soft: #e8f0ff;
  --tree-danger: #d64545;
  --tree-rel-extend: #2f9e6b;
  --tree-rel-challenge: #d6622b;
  --tree-rel-evidence: #2f6df6;
  --tree-rel-apply: #c39a17;
  --tree-rel-synthesize: #c2417e;
  --tree-shadow-sm: 0 1px 2px rgba(20, 25, 35, 0.06);
  --tree-shadow-md: 0 6px 20px rgba(20, 25, 35, 0.1);
  --tree-radius: 14px;
  --tree-radius-sm: 9px;
  --tree-card-width: min(720px, calc(100vw - var(--rail-width) - 28px));
  --tree-indent: 48px;
  width: 100%;
  min-width: 100%;
  min-height: calc(100vh - var(--topbar-height));
  margin: 0;
  background: var(--tree-bg);
  color: var(--tree-text);
}

.inspiration-tree-page .ln-shell {
  width: 100%;
  min-width: 100%;
  max-width: none;
  margin: 0;
  padding: 24px 58px 80px;
}

.inspiration-tree-page .tc-card {
  border: 1px solid var(--tree-border);
  border-radius: var(--tree-radius);
  background: var(--tree-surface);
  box-shadow: var(--tree-shadow-sm);
}

.inspiration-tree-page .ln-back {
  display: inline-flex;
  margin-bottom: 12px;
  border: 0;
  background: transparent;
  color: var(--tree-text-muted);
  padding: 0;
  font-size: 13px;
  font-weight: 600;
}

.inspiration-tree-page .ln-back:hover,
.inspiration-tree-page .ln-back:focus-visible {
  color: var(--tree-text);
  outline: none;
}

.inspiration-tree-page .ln-path {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: 14px;
  color: var(--tree-text-faint);
  font-size: 12.5px;
}

.inspiration-tree-page .ln-path button {
  border: 0;
  border-radius: 5px;
  background: transparent;
  color: var(--tree-text-muted);
  padding: 2px 4px;
  font-size: inherit;
  font-weight: 600;
}

.inspiration-tree-page .ln-path button:hover,
.inspiration-tree-page .ln-path button:focus-visible {
  background: var(--tree-surface-2);
  color: var(--tree-text);
  outline: none;
}

.inspiration-tree-page .ln-path .ln-sep {
  opacity: 0.5;
}

.inspiration-tree-page .ln-path .ln-current {
  max-width: 430px;
  overflow: hidden;
  color: var(--tree-text);
  font-weight: 800;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.inspiration-tree-page .ln-viewport {
  position: relative;
  overflow: visible;
}

.inspiration-tree-page .ln-stage {
  will-change: transform, opacity;
}

.inspiration-tree-page .ln-up-slot {
  text-align: center;
}

.inspiration-tree-page .ln-up {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin: 0 auto 4px;
  border: 1px solid var(--tree-border);
  border-radius: 999px;
  background: var(--tree-surface);
  color: var(--tree-text-muted);
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 600;
}

.inspiration-tree-page .ln-up:hover,
.inspiration-tree-page .ln-up:focus-visible {
  background: var(--tree-surface-2);
  color: var(--tree-text);
  outline: none;
}

.inspiration-tree-page .ln-up[disabled] {
  cursor: not-allowed;
  opacity: 0.4;
}

.inspiration-tree-page .ln-up .ln-up-arrow {
  font-size: 14px;
}

.inspiration-tree-page .ln-context-wrap {
  width: 100%;
  min-width: var(--tree-card-width);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.inspiration-tree-page .ln-context {
  width: var(--tree-card-width);
  max-width: none;
  border-width: 1.5px;
  padding: 18px 20px;
  box-shadow: var(--tree-shadow-md);
}

.inspiration-tree-page .ln-context.is-external {
  border-color: color-mix(in srgb, var(--tree-text-faint) 40%, var(--tree-border));
}

.inspiration-tree-page .ln-eyebrow,
.inspiration-tree-page .ln-context .ln-eyebrow,
.inspiration-tree-page .ln-child .ln-eyebrow {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 8px;
}

.inspiration-tree-page .ln-child .ln-eyebrow {
  margin-bottom: 6px;
}

.inspiration-tree-page .badge,
.inspiration-tree-page .topic-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  border: 1px solid var(--tree-border);
  background: var(--tree-surface-2);
  color: var(--tree-text-muted);
  border-radius: 999px;
  padding: 2px 8px;
  font-size: 12px;
  font-weight: 600;
  line-height: 1.2;
}

.inspiration-tree-page .topic-tag {
  border: 0;
  border-radius: 6px;
  padding: 1px 7px;
  font-size: 11px;
}

.inspiration-tree-page .badge-cap {
  border-color: color-mix(in srgb, var(--tree-rel-challenge) 35%, var(--tree-border));
  background: color-mix(in srgb, var(--tree-rel-challenge) 8%, transparent);
  color: var(--tree-rel-challenge);
}

.inspiration-tree-page .badge-draft {
  border-color: color-mix(in srgb, var(--tree-accent) 35%, var(--tree-border));
  background: var(--tree-accent-soft);
  color: var(--tree-accent);
}

.inspiration-tree-page .badge-ext {
  color: var(--tree-text-muted);
}

.inspiration-tree-page .rel-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  border: 1px solid currentColor;
  border-radius: 999px;
  background: color-mix(in srgb, currentColor 12%, transparent);
  padding: 2px 9px;
  font-size: 12px;
  font-weight: 700;
}

.inspiration-tree-page .rel-chip .rel-glyph {
  font-size: 12px;
}

.inspiration-tree-page .rel-explain,
.inspiration-tree-page .rel-evidence {
  color: var(--tree-rel-evidence);
}

.inspiration-tree-page .rel-advance,
.inspiration-tree-page .rel-extend {
  color: var(--tree-rel-extend);
}

.inspiration-tree-page .rel-perspective,
.inspiration-tree-page .rel-challenge {
  color: var(--tree-rel-challenge);
}

.inspiration-tree-page .rel-apply {
  color: var(--tree-rel-apply);
}

.inspiration-tree-page .rel-synthesize {
  color: var(--tree-rel-synthesize);
}

.inspiration-tree-page .rel-general {
  color: var(--tree-text-muted);
}

.inspiration-tree-page .meta-line {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--tree-text-faint);
  font-size: 12.5px;
}

.inspiration-tree-page .meta-dot::before {
  content: "·";
  margin: 0 2px;
}

.inspiration-tree-page .ln-context-title {
  display: block;
  width: 100%;
  margin: 0 0 6px;
  border: 0;
  background: transparent;
  color: var(--tree-text);
  padding: 0;
  text-align: left;
  font: inherit;
  font-size: 21px;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.02em;
  cursor: default;
}

.inspiration-tree-page .ln-context-title.is-clickable,
.inspiration-tree-page .ln-child-title {
  cursor: pointer;
}

.inspiration-tree-page .ln-context-title.is-clickable:hover,
.inspiration-tree-page .ln-context-title.is-clickable:focus-visible,
.inspiration-tree-page .ln-child-title:hover,
.inspiration-tree-page .ln-child-title:focus-visible {
  color: var(--tree-accent);
  outline: none;
}

.inspiration-tree-page .ln-inherited {
  margin: 8px 0 0;
  border-left: 3px solid var(--tree-border-strong);
  color: var(--tree-text-muted);
  padding-left: 10px;
  font-size: 13px;
  line-height: 1.55;
}

.inspiration-tree-page .ln-inherited b {
  color: var(--tree-text);
  font-weight: 700;
}

.inspiration-tree-page .ln-context-body {
  margin: 10px 0 0;
  color: var(--tree-text);
  font-size: 14px;
  line-height: 1.6;
}

.inspiration-tree-page .ln-ext-url {
  display: block;
  margin-top: 4px;
  color: var(--tree-accent);
  font-size: 12px;
  word-break: break-all;
}

.inspiration-tree-page .ln-context-foot {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
  border-top: 1px solid var(--tree-border);
  padding-top: 12px;
}

.inspiration-tree-page .ln-count {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--tree-text-muted);
  font-size: 13px;
  font-weight: 600;
}

.inspiration-tree-page .ln-count b {
  color: var(--tree-text);
  font-weight: 800;
}

.inspiration-tree-page .ln-foot-spacer {
  flex: 1 1 auto;
}

.inspiration-tree-page .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: 1px solid var(--tree-border-strong);
  border-radius: 999px;
  background: var(--tree-surface);
  color: var(--tree-text);
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 700;
  transition: background 0.15s, border-color 0.15s, transform 0.05s;
}

.inspiration-tree-page .btn:hover,
.inspiration-tree-page .btn:focus-visible {
  background: var(--tree-surface-2);
  outline: none;
}

.inspiration-tree-page .btn-sm {
  padding: 5px 11px;
  font-size: 13px;
}

.inspiration-tree-page .btn-primary {
  border-color: var(--tree-accent);
  background: var(--tree-accent);
  color: #ffffff;
}

.inspiration-tree-page .btn-primary:hover,
.inspiration-tree-page .btn-primary:focus-visible {
  background: color-mix(in srgb, var(--tree-accent) 88%, #000);
}

.inspiration-tree-page .ln-connector {
  width: 2px;
  height: 26px;
  margin: 4px auto 0;
  background: var(--tree-border-strong);
}

.inspiration-tree-page .ln-children-label {
  margin: 8px 0 12px;
  color: var(--tree-text-faint);
  text-align: center;
  font-size: 12px;
  font-weight: 700;
}

.inspiration-tree-page .ln-children {
  width: max-content;
  min-width: var(--tree-card-width);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin: 0 auto;
}

.inspiration-tree-page .ln-child-branch {
  position: relative;
  width: var(--tree-card-width);
  max-width: none;
  display: grid;
  gap: 10px;
  justify-items: start;
}

.inspiration-tree-page .ln-child-branch.is-nested {
  max-width: 100%;
}

.inspiration-tree-page .ln-child {
  width: var(--tree-card-width);
  padding: 14px 16px;
  cursor: default;
  transition: box-shadow 0.15s, border-color 0.15s, transform 0.08s;
}

.inspiration-tree-page .ln-child:hover,
.inspiration-tree-page .ln-child:focus-within {
  border-color: var(--tree-border-strong);
  box-shadow: var(--tree-shadow-md);
}

.inspiration-tree-page .ln-child-title {
  display: block;
  width: 100%;
  margin: 0 0 4px;
  border: 0;
  background: transparent;
  color: var(--tree-text);
  padding: 0;
  text-align: left;
  font: inherit;
  font-size: 16px;
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: -0.01em;
}

.inspiration-tree-page .ln-child-title-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: start;
}

.inspiration-tree-page .ln-child-actions {
  display: inline-flex;
  align-items: center;
  justify-content: flex-end;
  gap: 6px;
  min-height: 30px;
  white-space: nowrap;
}

.inspiration-tree-page .ln-promote-button,
.inspiration-tree-page .ln-relay-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--tree-border);
  border-radius: 999px;
  background: var(--tree-surface);
  color: var(--tree-text-muted);
  transition: background 0.15s, border-color 0.15s, color 0.15s, transform 0.12s;
}

.inspiration-tree-page .ln-promote-button {
  width: 34px;
  height: 30px;
  padding: 0;
}

.inspiration-tree-page .ln-relay-toggle {
  min-width: 48px;
  height: 30px;
  gap: 5px;
  padding: 0 9px;
}

.inspiration-tree-page .ln-relay-toggle.is-open {
  border-color: color-mix(in srgb, var(--tree-accent) 28%, var(--tree-border));
  background: var(--tree-accent-soft);
  color: var(--tree-accent);
}

.inspiration-tree-page .ln-promote-button:hover,
.inspiration-tree-page .ln-promote-button:focus-visible,
.inspiration-tree-page .ln-relay-toggle:not(:disabled):hover,
.inspiration-tree-page .ln-relay-toggle:not(:disabled):focus-visible {
  border-color: var(--tree-border-strong);
  background: var(--tree-surface-2);
  color: var(--tree-text);
  outline: none;
  transform: translateY(-1px);
}

.inspiration-tree-page .ln-relay-toggle:disabled {
  cursor: default;
  opacity: 0.42;
}

.inspiration-tree-page .ln-action-icon {
  width: 18px;
  height: 18px;
  display: inline-block;
  flex: 0 0 18px;
  background: currentColor;
}

.inspiration-tree-page .ln-action-icon.is-up-double {
  width: 20px;
  height: 20px;
  flex-basis: 20px;
  -webkit-mask: var(--icon-up-double) center / contain no-repeat;
  mask: var(--icon-up-double) center / contain no-repeat;
}

.inspiration-tree-page .ln-action-icon.is-torch {
  -webkit-mask: var(--icon-torch-runner) center / contain no-repeat;
  mask: var(--icon-torch-runner) center / contain no-repeat;
}

.inspiration-tree-page .ln-action-count {
  min-width: 1em;
  color: currentColor;
  font-size: 12px;
  font-weight: 800;
  line-height: 1;
  text-align: center;
}

.inspiration-tree-page .ln-child-summary {
  overflow: hidden;
  display: -webkit-box;
  margin: 6px 0 0;
  color: var(--tree-text-muted);
  font-size: 13px;
  line-height: 1.55;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.inspiration-tree-page .ln-child-foot {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 10px;
}

.inspiration-tree-page .ln-child-nested {
  width: max-content;
  display: grid;
  gap: 10px;
  margin-left: var(--tree-indent);
  padding: 0 0 0 24px;
  border-left: 2px solid var(--tree-border-strong);
  justify-items: start;
}

.inspiration-tree-page .ln-empty {
  width: 100%;
  max-width: 720px;
  border: 1px dashed var(--tree-border-strong);
  border-radius: var(--tree-radius);
  color: var(--tree-text-muted);
  padding: 30px 20px;
  text-align: center;
}

.inspiration-tree-page .ln-empty .btn {
  margin-top: 12px;
}

@keyframes ln-in-right {
  from { transform: translateX(60px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

@keyframes ln-in-left {
  from { transform: translateX(-60px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

.inspiration-tree-page .ln-stage.anim-in-right {
  animation: ln-in-right 0.26s ease;
}

.inspiration-tree-page .ln-stage.anim-in-left {
  animation: ln-in-left 0.26s ease;
}

@media (max-width: 640px) {
  .inspiration-tree-page {
    --tree-card-width: calc(100vw - 28px);
    --tree-indent: 28px;
  }

  .inspiration-tree-page .ln-shell {
    padding: 18px 14px 64px;
  }

  .inspiration-tree-page .ln-path .ln-current {
    max-width: min(360px, 80vw);
  }

  .inspiration-tree-page .ln-context-title {
    font-size: 19px;
  }

  .inspiration-tree-page .ln-child-title-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .inspiration-tree-page .ln-child-actions {
    justify-content: flex-start;
  }

  .inspiration-tree-page .ln-child-nested {
    margin-left: var(--tree-indent);
    padding-left: 14px;
  }
}