:root {
  color-scheme: light;
  --bg: #eef2f5;
  --surface: #ffffff;
  --surface-2: #f7f9fb;
  --ink: #17202a;
  --muted: #5f6f7f;
  --line: #d3dbe3;
  --line-strong: #aeb9c5;
  --accent: #0b6bcb;
  --accent-2: #007a5a;
  --warn: #b36b00;
  --code: #eef4ff;
  --shadow: 0 12px 32px rgba(16, 24, 32, .12);
  --left-width: 320px;
  --right-width: 400px;
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font: 14px/1.48 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  overflow: hidden;
}
button, input, select { font: inherit; }
button, select, input {
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: var(--surface);
  color: var(--ink);
}
button {
  min-height: 32px;
  padding: 0 10px;
  cursor: pointer;
}
button:hover, button:focus, input:focus, select:focus {
  border-color: var(--accent);
  outline: 2px solid rgba(11, 107, 203, .16);
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.app {
  height: 100dvh;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
}
.topbar {
  min-width: 0;
  display: grid;
  grid-template-columns: minmax(220px, 1fr) auto minmax(300px, 520px);
  gap: 12px;
  align-items: center;
  padding: 10px 14px;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}
.titleBlock { min-width: 0; }
h1 {
  margin: 0;
  font-size: 18px;
  line-height: 1.15;
  letter-spacing: 0;
}
.titleBlock p {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.tabs {
  display: flex;
  gap: 6px;
  align-items: center;
}
.tab.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.bundleForm {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: 6px;
  align-items: center;
}
.bundleUrlBox {
  min-width: 0;
  position: relative;
}
.bundleUrlBox input {
  min-width: 0;
  height: 32px;
  padding: 0 9px;
  width: 100%;
}
.bundleSuggestions {
  position: absolute;
  z-index: 30;
  top: calc(100% + 5px);
  left: 0;
  right: 0;
  max-height: 320px;
  overflow: auto;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
  padding: 6px;
}
.bundleSuggestion {
  width: 100%;
  height: auto;
  display: grid;
  gap: 2px;
  text-align: left;
  border: 0;
  background: transparent;
  padding: 8px 9px;
}
.bundleSuggestion:hover,
.bundleSuggestion:focus {
  background: var(--surface-2);
  outline: 2px solid rgba(11, 107, 203, .16);
}
.bundleSuggestion strong {
  font-size: 13px;
  line-height: 1.25;
}
.bundleSuggestion span {
  color: var(--accent);
  font-size: 12px;
  overflow-wrap: anywhere;
}
.bundleSuggestion small {
  color: var(--muted);
  font-size: 11px;
  line-height: 1.25;
}
.filePick {
  min-height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 10px;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: var(--surface);
  cursor: pointer;
}
.filePick input { display: none; }

.workspace {
  min-height: 0;
  display: grid;
  grid-template-columns: var(--left-width) 6px minmax(420px, 1fr) 6px var(--right-width);
  transition: grid-template-columns .16s ease;
}
.workspace.leftCollapsed {
  --left-width: 44px;
}
.workspace.rightCollapsed {
  --right-width: 44px;
}
.sidebar, .inspector {
  min-height: 0;
  min-width: 0;
  background: var(--surface);
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.inspector {
  border-right: 0;
  border-left: 1px solid var(--line);
}
.panelBar {
  min-height: 38px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: 4px 6px;
  border-bottom: 1px solid var(--line);
  background: var(--surface-2);
}
.inspector .panelBar {
  justify-content: flex-start;
}
.iconButton {
  width: 32px;
  min-width: 32px;
  min-height: 30px;
  padding: 0;
  border-radius: 6px;
  line-height: 1;
  font-weight: 700;
}
.iconButton.wide {
  width: 54px;
  min-width: 54px;
  font-size: 12px;
}
.workspace.leftCollapsed .sidebarTools,
.workspace.leftCollapsed .pageList,
.workspace.rightCollapsed .detail {
  display: none;
}
.workspace.leftCollapsed .sidebar,
.workspace.rightCollapsed .inspector {
  background: var(--surface-2);
}
.workspace.leftCollapsed #toggleLeft {
  transform: rotate(180deg);
}
.workspace.rightCollapsed #toggleRight {
  transform: rotate(180deg);
}
.splitter {
  min-width: 6px;
  background: linear-gradient(90deg, transparent, var(--line), transparent);
  cursor: col-resize;
  touch-action: none;
}
.splitter:hover,
.splitter.dragging {
  background: var(--accent);
}
.workspace.leftCollapsed .leftSplitter,
.workspace.rightCollapsed .rightSplitter {
  cursor: default;
  background: var(--line);
}
.sidebarTools {
  display: grid;
  grid-template-columns: 1fr;
  gap: 7px;
  padding: 10px;
  border-bottom: 1px solid var(--line);
  background: var(--surface-2);
}
.sidebarTools input, .sidebarTools select {
  height: 34px;
  padding: 0 9px;
  width: 100%;
  min-width: 0;
}
.typeFilters {
  display: grid;
  gap: 6px;
  padding-top: 4px;
}
.typeFilterHeader {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  align-items: center;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.typeFilterHeader button {
  min-height: 24px;
  padding: 0 7px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
}
.typeFilterGrid {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  max-height: 112px;
  overflow: auto;
}
.typeToggle {
  min-height: 26px;
  max-width: 100%;
  display: inline-grid;
  grid-template-columns: 8px minmax(0, 1fr) auto;
  gap: 5px;
  align-items: center;
  border-style: dashed;
  border-radius: 999px;
  padding: 0 8px;
  color: var(--muted);
  background: #fff;
  font-size: 11px;
}
.typeToggle.active {
  border-style: solid;
  border-color: var(--accent);
  background: #eaf3ff;
  color: var(--ink);
}
.typeDot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}
.typeName {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.typeCount {
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}
.pageList {
  flex: 1;
  min-height: 0;
  overflow: auto;
  padding: 8px;
}
.group {
  margin: 12px 7px 5px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.item {
  width: 100%;
  display: grid;
  grid-template-columns: 10px minmax(0, 1fr);
  gap: 8px;
  align-items: start;
  text-align: left;
  border: 0;
  background: transparent;
  padding: 8px;
  border-radius: 6px;
}
.item:hover { background: var(--surface-2); outline: none; }
.item.active { background: #e4eefa; }
.dot {
  width: 10px;
  height: 10px;
  margin-top: 5px;
  border-radius: 50%;
}
.itemTitle {
  display: block;
  font-size: 13px;
  line-height: 1.28;
  overflow-wrap: anywhere;
}
.itemMeta {
  display: block;
  margin-top: 2px;
  color: var(--muted);
  font-size: 11px;
  overflow-wrap: anywhere;
}

.stage {
  min-height: 0;
  min-width: 0;
  position: relative;
  background: #f8fafc;
  overflow: hidden;
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr) auto;
}
.stageChrome {
  min-width: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  padding: 8px 10px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, .92);
  z-index: 2;
}
.crumbs {
  min-width: 0;
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.stageActions, .graphButtons {
  display: flex;
  align-items: center;
  gap: 6px;
}
.actionButton {
  min-height: 30px;
  padding: 0 9px;
  border-radius: 6px;
  background: var(--surface);
}
.actionButton.active {
  background: var(--accent-2);
  border-color: var(--accent-2);
  color: #fff;
}
.graphToolbar {
  display: none;
  min-width: 0;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px;
  align-items: center;
  padding: 8px 10px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, .82);
  z-index: 2;
}
.stage.graphMode .graphToolbar {
  display: grid;
}
.graphHint {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  overflow-wrap: anywhere;
}
.status {
  position: absolute;
  z-index: 4;
  top: 58px;
  left: 12px;
  right: 12px;
  padding: 10px 12px;
  border: 1px solid #e0b15d;
  border-left: 5px solid var(--warn);
  background: #fff7e6;
  box-shadow: var(--shadow);
}
.graphCanvas {
  min-height: 0;
  min-width: 0;
  position: relative;
  display: none;
  overflow: hidden;
  background: #f8fafc;
}
.stage.graphMode .graphCanvas { display: block; }
.graph {
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
  user-select: none;
  cursor: grab;
  background: #f8fafc;
}
.graph.dragging { cursor: grabbing; }
.stage.graphMode .panel { display: none; }
.graphHotspots {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
}
.graphHotspot {
  position: absolute;
  min-height: 0;
  padding: 0;
  border: 0;
  background: transparent;
  pointer-events: auto;
}
.labelHotspot { border-radius: 5px; }
.dotHotspot { border-radius: 999px; }
.graphHotspot:hover,
.graphHotspot:focus {
  outline: 3px solid rgba(255, 221, 0, .85);
  outline-offset: 1px;
}
.panel {
  height: 100%;
  overflow: auto;
  padding: 20px 24px 44px;
}
.detail {
  flex: 1;
  min-height: 0;
  overflow: auto;
  padding: 18px 20px 34px;
}
.detail h2 {
  margin: 8px 0 4px;
  font-size: 21px;
  line-height: 1.2;
}
.detailActions {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin: 12px 0;
}
.kv {
  display: grid;
  grid-template-columns: 110px minmax(0, 1fr);
  gap: 6px 9px;
  margin: 13px 0;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}
.kv dt {
  color: var(--muted);
  font-weight: 700;
}
.kv dd {
  margin: 0;
  min-width: 0;
  overflow-wrap: anywhere;
}
.miniList {
  display: grid;
  gap: 6px;
  margin: 8px 0 14px;
}
.miniList button,
.edgePanel button,
.pinsPanel button {
  width: 100%;
  height: auto;
  text-align: left;
  padding: 7px 8px;
}
.snippet {
  max-height: 156px;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-2);
  padding: 10px;
  color: var(--muted);
}
.badge {
  display: inline-flex;
  align-items: center;
  max-width: 100%;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface-2);
  padding: 2px 8px;
  color: var(--muted);
  font-size: 11px;
}
.path {
  margin: 7px 0 12px;
  color: var(--muted);
  font-size: 12px;
  overflow-wrap: anywhere;
}
.description {
  color: var(--muted);
  margin: 8px 0 14px;
}
.chips {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin: 10px 0 0;
}
.chip {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface-2);
  padding: 4px 8px;
  color: var(--ink);
  font-size: 12px;
}
.linkGrid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}
.linkBlock {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  padding: 12px;
}
.linkBlock h3 {
  margin: 0 0 8px;
  font-size: 14px;
}
.linkBlock button {
  width: 100%;
  text-align: left;
  height: auto;
  min-height: 34px;
  margin: 6px 0;
  padding: 8px;
}
.edgePanel {
  display: none;
  max-height: 172px;
  overflow: auto;
  border-top: 1px solid var(--line);
  background: rgba(255, 255, 255, .94);
  padding: 10px;
}
.stage.graphMode .edgePanel:not([hidden]) {
  display: block;
}
.edgePanel h3,
.pinsPanel h3 {
  margin: 0 0 8px;
  font-size: 13px;
}
.edgeGrid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 6px;
}
.edgePanel button.active {
  border-color: var(--accent);
  background: #e4eefa;
}
.pinsPanel {
  display: grid;
  gap: 8px;
  border-top: 1px solid var(--line);
  background: var(--surface);
  padding: 9px 10px;
}
.pinsHeader {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
}
.pinStack {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.pin {
  display: inline-grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 5px;
  align-items: center;
  max-width: 280px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface-2);
  padding: 5px 6px;
}
.pin button {
  min-height: 24px;
  width: auto;
  padding: 0 6px;
}
.resourceButton.active {
  border-color: var(--accent);
  background: #e4eefa;
}
.timelinePanel {
  padding: 18px 20px 36px;
}
.timelineSummary {
  max-width: 980px;
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 12px;
}
.timelineGraph {
  min-width: 720px;
  position: relative;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(180deg, #fbfdff 0%, #f3f7fb 100%);
  overflow: hidden;
}
.timelineSvg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.timelineAxis,
.timelineTick {
  stroke: #cbd6e2;
  stroke-width: 1;
}
.timelineTick {
  opacity: .68;
}
.timelineTickLabel {
  fill: var(--muted);
  font-size: 10px;
}
.timelineEdge {
  fill: none;
  stroke: #8b9bad;
  stroke-width: 1.1;
  opacity: .34;
}
.timelineDot {
  stroke: #fff;
  stroke-width: 2.4;
}
.timelineDot.active {
  stroke: #101820;
  stroke-width: 3.4;
}
.timelineNode {
  position: absolute;
  width: 236px;
  min-height: 38px;
  height: auto;
  padding: 7px 9px;
  text-align: left;
  background: rgba(255, 255, 255, .94);
  box-shadow: 0 1px 0 rgba(16, 24, 32, .04);
}
.timelineNode.active {
  border-color: #101820;
  box-shadow: 0 0 0 2px rgba(16, 24, 32, .12);
}
.timelineNodeTitle {
  display: block;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.md {
  max-width: 980px;
}
.md h1, .md h2, .md h3 { letter-spacing: 0; }
.md h1 { font-size: 24px; margin: 0 0 12px; }
.md h2 { font-size: 18px; margin: 24px 0 8px; }
.md h3 { font-size: 15px; margin: 18px 0 6px; }
.md p { margin: 9px 0; }
.md ul, .md ol { padding-left: 22px; }
.md li { margin: 4px 0; }
.md code {
  background: var(--code);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1px 4px;
}
.md pre {
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--code);
  padding: 10px;
}
.md pre code {
  border: 0;
  background: transparent;
  padding: 0;
}
.tableWrap {
  overflow: auto;
  margin: 12px 0;
  border: 1px solid var(--line);
  border-radius: 8px;
}
.md table {
  width: 100%;
  min-width: 540px;
  border-collapse: collapse;
  background: var(--surface);
}
.md th, .md td {
  border-bottom: 1px solid var(--line);
  padding: 8px 10px;
  text-align: left;
  vertical-align: top;
}
.md th { background: var(--surface-2); }

.edge {
  fill: none;
  stroke: #8b9bad;
  stroke-width: 1.4;
  opacity: .64;
}
.edge.focus { stroke: var(--accent); stroke-width: 2.5; opacity: 1; }
.edgeHit {
  fill: none;
  stroke: transparent;
  stroke-width: 14;
  cursor: pointer;
}
.edgeLabel {
  fill: #34495e;
  font-size: 10px;
  paint-order: stroke;
  stroke: #f8fafc;
  stroke-width: 4px;
  pointer-events: none;
}
.labelGhost {
  fill: var(--muted);
  font-size: 10px;
  paint-order: stroke;
  stroke: #f8fafc;
  stroke-width: 4px;
  opacity: .72;
  pointer-events: none;
}
.node { cursor: pointer; }
.nodeHit {
  stroke: transparent;
  pointer-events: all;
}
.node circle {
  stroke: #fff;
  stroke-width: 2.5;
}
.node.active circle {
  stroke: #101820;
  stroke-width: 3.5;
}
.node.highlighted circle,
.node.highlighted .stackCardTop {
  stroke: #ffdd00;
  stroke-width: 4;
}
.stackCard {
  stroke: #fff;
  stroke-width: 2.2;
  filter: drop-shadow(0 1px 1px rgba(16, 24, 32, .16));
}
.stackCardBack {
  fill: #dbe7f3;
  opacity: .92;
}
.stackCardMid {
  fill: #edf4fb;
  opacity: .96;
}
.node text {
  fill: #17202a;
  font-size: 11px;
  paint-order: stroke;
  stroke: #f8fafc;
  stroke-width: 4px;
  stroke-linejoin: round;
  pointer-events: all;
}
.node .stackCount {
  fill: #fff;
  font-size: 12px;
  font-weight: 800;
  paint-order: normal;
  stroke: none;
  pointer-events: all;
}

@media (max-width: 1120px) {
  body { overflow: auto; }
  .app { min-height: 100dvh; height: auto; }
  .topbar { grid-template-columns: 1fr; align-items: stretch; }
  .tabs, .bundleForm { justify-content: start; }
  .workspace { display: block; }
  .splitter { display: none; }
  .workspace.leftCollapsed .sidebarTools,
  .workspace.rightCollapsed .detail {
    display: grid;
  }
  .workspace.leftCollapsed .pageList { display: block; }
  .workspace.rightCollapsed .detail { display: block; }
  .sidebar, .inspector { max-height: 42dvh; border-right: 0; border-bottom: 1px solid var(--line); }
  .stage { height: 62dvh; min-height: 420px; }
  .panelBar { display: none; }
}

@media (max-width: 680px) {
  .bundleForm { grid-template-columns: 1fr auto; }
  .filePick { grid-column: 1 / -1; }
  .tabs { overflow-x: auto; }
  .linkGrid, .timeRow { grid-template-columns: 1fr; }
  .panel, .detail { padding-left: 14px; padding-right: 14px; }
}