/* Original validation workspace, with the project's light page palette. */
:root {
  color-scheme: light;
  --bg: #f8f9fa; --panel: #fff; --panel-2: #f8f9fa; --line: #e8eaed;
  --text: #202124; --muted: #5f6368; --accent: #1a73e8; --accent-soft: #e8f0fe;
  --success: #188038; --danger: #c5221f;
  --edge-confirmed: #188038; --edge-code: #1a73e8; --edge-anchor: #00897b;
  --edge-coupled: #7b1fa2; --edge-contact: #a65d00; --edge-broken: #c5221f; --edge-unknown: #80868b;
}
[hidden] { display: none !important; }
html, body { min-width: 280px; background: var(--bg); }
body { font-size: 13px; }
#app { height: 100dvh; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
button, select { min-height: 34px; font-size: 13px; }
button:disabled { opacity: .45; cursor: default; }
button:hover:not(:disabled) { border-color: #a8c7fa; background: #f1f6fd; }
button.active, button[aria-pressed="true"] { background: #e8f0fe; border-color: #a8c7fa; color: #1557b0; }
button.primary { color: #fff; background: var(--accent); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
input[type="checkbox"] { accent-color: var(--accent); width: 15px; height: 15px; flex-shrink: 0; }

.topbar { padding: 12px 16px; gap: 16px; background: #fff; backdrop-filter: none; z-index: 8; }
.brand { min-width: 0; color: var(--text); font-size: 16px; font-weight: 650; letter-spacing: -.3px; }
.catalog-bar { flex: 1; min-width: 440px; display: flex; align-items: center; gap: 16px; }
.source-picker { flex: 0 1 300px; min-width: 0; }
.model-picker { flex: 1 1 300px; min-width: 0; flex-wrap: nowrap; }
.source-picker label, .model-picker label { font-size: 12px; }
#source-select, #model-select { width: 100%; min-width: 0; max-width: none; flex: 1; height: 34px; }
.model-picker button { min-width: 32px; padding: 5px 8px; }
.model-position { font-size: 12px; color: var(--muted); white-space: nowrap; }
.code-link { font-size: 12px; white-space: nowrap; }

.workspace { grid-template-columns: 280px minmax(0,1.3fr) minmax(0,1fr); min-width: 0; min-height: 0; }
.sidebar { min-width: 0; max-height: none; border-right: 1px solid var(--line); }
.sidebar-head { padding: 16px; background: #fff; backdrop-filter: none; }
.sidebar-head h1 { margin: 0; font-size: 15px; overflow-wrap: anywhere; }
#controls { padding: 12px 16px 0; }
.control-group { padding: 12px 0; border-color: var(--line); }
.control-group:first-child { padding-top: 0; }
.control-group h2 { color: var(--muted); font-size: 12px; letter-spacing: .04em; margin: 0 0 10px; }
.control-group p { color: var(--muted); font-size: 12px; line-height: 1.55; }
.control-group > summary { cursor: pointer; font-size: 13px; }
.source-tag { display: inline-block; padding: 4px 7px; background: #e8f0fe; color: #1557b0; border-radius: 4px; font-size: 12px; }
.source-tag.baseline { color: #5f6368; background: #f1f3f4; }
.model-stats { display: flex; flex-wrap: wrap; gap: 12px; margin: 12px 0 14px; }
.model-stats div { display: flex; flex-direction: column-reverse; gap: 2px; }
.model-stats dt { color: var(--muted); font-size: 11px; }
.model-stats dd { margin: 0; font-size: 21px; }
.model-stats dd.preview-check-label { padding-top: 4px; font-size: 14px; color: #5f6368; }
.display-toggle { display: flex; gap: 8px; align-items: center; margin: 10px 0; cursor: pointer; font-size: 12px; }
.inspector-note { color: var(--muted); font-size: 12px !important; line-height: 1.5; }
.download-link { display: block; font-size: 12px; margin: 10px 0; }
.model-utilities { display: flex; flex-wrap: wrap; gap: 8px; padding: 12px 16px 16px; }
.model-utilities button { flex: 1 1 auto; font-size: 12px; padding: 6px 8px; }
.edit-panel { padding: 0 16px 14px; border-bottom: 1px solid var(--line); }
.edit-panel-heading { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.edit-panel h2 { margin: 0; font-size: 13px; font-weight: 600; }
#edit-reset-all { padding: 4px 7px; min-height: 28px; font-size: 11px; }
.edit-instructions { margin: 7px 0 8px; color: var(--muted); font-size: 11px; }
.edit-parts { list-style: none; padding: 0; margin: 0; }
.edit-part { padding: 9px 7px 7px; border-bottom: 1px solid var(--line); border-left: 2px solid transparent; }
.edit-part.selected { background: #f5f8fd; border-left-color: var(--accent); }
.edit-part-heading { display: flex; gap: 6px; align-items: center; }
.edit-part-name { flex: 1; min-width: 0; padding: 2px 0; min-height: 28px; border: 0; border-radius: 3px; text-align: left; background: transparent; font-size: 12px; line-height: 1.35; overflow-wrap: anywhere; }
.edit-part-name[aria-pressed="true"] { background: transparent; color: #1557b0; }
.edit-number-wrap { display: flex; align-items: center; gap: 3px; font-size: 11px; color: var(--muted); }
.edit-part-number { width: 65px; min-height: 28px; padding: 3px 4px; text-align: right; font-size: 12px; font-variant-numeric: tabular-nums; background: #fff; }
.edit-part.edited .edit-part-number { color: #1557b0; border-color: #a8c7fa; }
.edit-part-track { display: flex; align-items: center; gap: 8px; margin-top: 3px; }
.edit-part-range { flex: 1; width: 0; min-width: 0; height: 24px; padding: 0; margin: 0; accent-color: var(--accent); cursor: pointer; }
.edit-part-reset { min-height: 26px; padding: 2px 4px; border: 0; background: transparent; font-size: 11px; color: var(--muted); }
#edit-state { color: var(--muted); font-size: 11px; line-height: 1.35; }
#edit-state[data-state="loading"] { color: #5f6368; }
#edit-state[data-state="error"] { color: #c5221f; }
#edit-state { margin: 10px 0 0; }
.browser-preview .graph-edge { stroke: #607d9b !important; }
.browser-preview .anchor-relation-swatch { background: #607d9b !important; }
.browser-preview .anchor-lane-center rect { fill: #edf1f5 !important; stroke: #607d9b !important; }
.browser-preview .anchor-lane-center-title, .browser-preview .anchor-lane-center-coordinate { fill: #455a70 !important; }
.anchor-lane-connector.unverified { stroke: #607d9b; }
.anchor-lane-center.unverified rect { fill: #edf1f5; stroke: #607d9b; }
.anchor-lane-center.unverified .anchor-lane-center-title,
.anchor-lane-center.unverified .anchor-lane-center-coordinate { fill: #455a70; }
.edit-panel .inspector-note { margin: 10px 0 0; font-size: 11px !important; }

.graph-panel { grid-template-rows: auto minmax(300px,1fr) auto; background: #fff; }
.graph-toolbar { padding: 12px; gap: 9px; background: #fff; z-index: 5; }
.graph-tabs { justify-content: flex-start; gap: 6px; }
.graph-tab-group { gap: 5px; min-width: 0; }
.graph-tab-group.secondary { margin: 0; opacity: 1; }
.graph-tabs button, .graph-actions button, .anchor-controls button, .tree3d-controls button { min-height: 30px; padding: 5px 8px; font-size: 12px; white-space: nowrap; }
.graph-actions { margin: 0; gap: 6px; flex-wrap: wrap; }
#graph-search { min-width: 80px; height: 30px; font-size: 12px; flex: 1 1 100px; }
.tree3d-controls, .anchor-controls { padding: 8px; gap: 6px; border-color: var(--line); background: #f8f9fa; }
.tree3d-toggle { min-height: 28px; padding: 3px 5px; border: 0; background: transparent; color: var(--text); font-size: 12px; }
.tree3d-control-note { flex: 1 0 100%; min-width: 0; margin: 2px 0 0; text-align: left; font-size: 11px; line-height: 1.4; color: var(--muted); }
.graph-legend { margin: 0; font-size: 11px; line-height: 1.4; }
#graph-stage { min-height: 300px; background: #f8f9fa; }
.graph-node-label, .graph-node-title { fill: var(--text); }
.graph-footer { display: grid; gap: 5px; min-height: 74px; max-height: 124px; padding: 10px 12px; background: #fff; overflow: auto; font-size: 12px; line-height: 1.45; }
.graph-panel.anchor-view .graph-footer { max-height: 170px; }
#graph-status { color: var(--muted); overflow-wrap: anywhere; }
#graph-detail { color: var(--text); overflow-wrap: anywhere; }
.anchor-relations { grid-template-columns: repeat(auto-fit,minmax(min(200px,100%),1fr)); }
.tree3d-hint { max-width: calc(100% - 24px); color: var(--muted); background: #fffffff0; font-size: 11px; line-height: 1.4; border-color: var(--line); }
.tree3d-tooltip { max-width: min(300px,calc(100% - 24px)); color: var(--text); background: #fff; border-color: var(--line); box-shadow: 0 4px 24px #20212414; }
.graph-panel.graph-expanded { position: fixed; inset: 0; z-index: 30; width: 100%; height: 100dvh; min-height: 0; background: #fff; }

.viewer { background: #f8f9fa; min-width: 0; min-height: 300px; }
.viewer-tools { inset: 12px 12px auto; justify-content: flex-end; align-items: center; gap: 6px; }
.viewport-title { margin-right: auto; color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .07em; }
.viewer-tools button { font-size: 12px; padding: 5px 8px; }
.viewer-status { color: var(--muted); background: none; border: 0; box-shadow: none; font-size: 12px; line-height: 1.4; left: 12px; right: 12px; top: 54px; padding: 0; pointer-events: none; }
.viewer-status.success { color: var(--muted); }
.viewer-status.error { color: #c5221f; background: #fce8e6; padding: 10px; pointer-events: auto; }
.viewer-hint { color: var(--muted); font-size: 11px; line-height: 1.4; text-align: center; width: calc(100% - 24px); white-space: normal; bottom: 16px; }
.preview-selection { background: #fff; border-color: #a8c7fa; color: #1557b0; box-shadow: 0 2px 8px #20212408; font-size: 12px; }
.preview-selection.anchor-visible { background: #fff; color: #137333; border-color: #ceead6; }
.preview-selection.missing { background: #fef7e0; color: #8a5200; }
.viewer:has(.preview-selection:not([hidden])) .viewer-hint { display: none; }
.loading-ring { background: #ffffffaa; }
#comparison-toggle { color: #1557b0; border-color: #a8c7fa; background: #e8f0fe; white-space: nowrap; }
.viewer.comparison-mode #viewport { visibility: hidden; }
.viewer.comparison-mode .viewer-hint, .viewer.comparison-mode .preview-selection,
.viewer.comparison-mode #fit-button, .viewer.comparison-mode #rotate-button, .viewer.comparison-mode #viewer-status,
.viewer.comparison-mode .viewport-title { display: none; }
.viewer.comparison-mode .viewer-tools { z-index: 7; }
.paper-comparison { position: absolute; inset: 82px 0 0; padding: 8px 12px 14px; overflow: auto; background: #fff; z-index: 4; }
.paper-comparison header h2 { margin: 0; font-size: 14px; font-weight: 600; }
.paper-comparison header label { display: block; font-size: 11px; margin: 12px 0 5px; color: var(--muted); }
#comparison-preset { width: 100%; height: 32px; padding: 4px 7px; font-size: 12px; }
#comparison-state { margin: 6px 0 12px; color: var(--muted); font-size: 12px; }
#comparison-status { font-size: 12px; color: var(--muted); line-height: 1.5; }
#comparison-status.error { color: #c5221f; }
.comparison-images { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: 8px; }
.comparison-images figure { margin: 0; min-width: 0; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; background: #fff; }
.comparison-images figcaption { padding: 9px; font-size: 12px; font-weight: 600; border-bottom: 1px solid var(--line); }
.comparison-images img { display: block; width: 100%; height: auto; aspect-ratio: 1 / 1; object-fit: contain; background: #fff; }
.comparison-note { color: var(--muted); font-size: 11px; line-height: 1.5; }

@media (max-width:1100px) {
  .topbar { gap: 10px 16px; padding: 10px 12px; }
  .catalog-bar { gap: 10px; }
  .workspace { grid-template-columns: 240px minmax(0,1.15fr) minmax(0,1fr); }
  .sidebar-head { padding: 12px; }
  #controls { padding: 12px 12px 0; }
  .model-utilities { padding: 12px; }
  .edit-panel { padding: 0 12px 12px; }
  .graph-toolbar { padding: 10px; }
  .graph-tabs button { padding: 5px 7px; }
  .viewport-title { display: none; }
}
@media (max-width:800px) {
  body { overflow: auto; }
  #app { height: auto; min-height: 100dvh; }
  .topbar { position: relative; }
  .brand { flex: 1; font-size: 14px; }
  .catalog-bar { order: 3; flex-basis: 100%; min-width: 0; flex-wrap: wrap; gap: 8px; }
  .source-picker, .model-picker { flex: 1 1 100%; min-width: 0; }
  .source-picker label, .model-picker label { width: 70px; flex-shrink: 0; }
  #source-select, #model-select { flex: 1 1 0; min-width: 0; }
  .model-picker { order: initial; gap: 6px; }
  .model-position { font-size: 11px; }
  .workspace { display: flex; flex-direction: column; }
  .sidebar { max-height: 390px; border-right: 0; border-bottom: 1px solid var(--line); }
  .sidebar-head { padding: 12px; }
  #controls { padding: 12px 12px 0; }
  .graph-panel { height: auto; min-height: 540px; grid-template-rows: auto minmax(300px,1fr) auto; border-right: 0; border-bottom: 1px solid var(--line); }
  .graph-footer, .graph-panel.anchor-view .graph-footer { max-height: 110px; }
  .viewer { height: 360px; min-height: 300px; }
  .viewport-title { display: inline; }
  .graph-panel.graph-expanded { height: 100dvh; min-height: 0; border: 0; }
}
@media (max-width:380px) {
  .topbar { padding: 10px; gap: 8px; }
  .source-picker label, .model-picker label { width: 60px; font-size: 11px; }
  .model-position { display: none; }
  .brand { font-size: 13px; }
  .graph-toolbar { padding: 8px; }
  .graph-tabs button { font-size: 11px; padding: 5px 6px; }
}
@media (prefers-reduced-motion:reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}