:root {
  color-scheme: light;
  --bg: #f6f7f9;
  --panel: #ffffff;
  --ink: #20242c;
  --muted: #667085;
  --line: #d9dee7;
  --accent: #126a72;
  --accent-strong: #0c4d54;
  --warn: #a65000;
  --danger: #b42318;
  --green: #198754;
  --violet: #5b4b8a;
  --gold: #b58105;
  --radius: 8px;
  --shadow: 0 10px 24px rgba(32, 36, 44, 0.08);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
}

button,
input,
textarea,
select {
  font: inherit;
}

button {
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
  border-radius: 7px;
  cursor: pointer;
  min-height: 38px;
}

button:hover {
  border-color: var(--accent);
}

input,
textarea,
select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #fff;
  color: var(--ink);
  padding: 10px 11px;
}

textarea {
  resize: vertical;
}

.app-shell {
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  border-right: 1px solid var(--line);
  background: #eef2f5;
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 4px;
}

.brand-mark {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font-weight: 800;
}

.brand h1,
.toolbar h2,
.section-head h3 {
  margin: 0;
  letter-spacing: 0;
}

.brand h1 {
  font-size: 1.15rem;
}

.brand span,
.toolbar p,
.muted {
  color: var(--muted);
  font-size: 0.9rem;
}

.panel,
.surface {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.panel {
  padding: 14px;
}

.panel label,
.section-head,
.panel-heading {
  font-weight: 700;
}

.compact {
  box-shadow: none;
}

.inline-action {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 42px;
  gap: 8px;
  margin-top: 8px;
}

.wide-action {
  width: 100%;
  margin-top: 10px;
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  font-weight: 700;
}

.wide-action:hover {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
}

.panel-heading,
.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.facts {
  margin: 12px 0 0;
}

.facts div {
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr);
  gap: 10px;
  padding: 7px 0;
  border-top: 1px solid #edf0f4;
}

.facts dt {
  color: var(--muted);
}

.facts dd {
  margin: 0;
  overflow-wrap: anywhere;
}

.stacked {
  display: grid;
  gap: 8px;
  margin-top: 10px;
}

.workspace {
  min-width: 0;
  padding: 24px;
  display: grid;
  gap: 18px;
}

.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
}

.toolbar h2 {
  font-size: 1.55rem;
}

.toolbar p {
  margin: 4px 0 0;
}

.toolbar-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.toolbar-actions button {
  padding: 0 13px;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(5, minmax(120px, 1fr));
  gap: 12px;
}

.metrics div {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
}

.metrics strong {
  display: block;
  font-size: 1.7rem;
}

.metrics span {
  color: var(--muted);
}

.work-grid,
.support-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(320px, 0.8fr);
  gap: 18px;
}

.support-grid {
  grid-template-columns: minmax(0, 1fr);
}

.surface {
  padding: 16px;
  min-width: 0;
}

.view-tabs {
  display: inline-flex;
  width: fit-content;
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.view-tab {
  min-height: 34px;
  padding: 0 14px;
  border-color: transparent;
  background: transparent;
}

.view-tab.active {
  color: #fff;
  background: var(--ink);
  border-color: var(--ink);
}

.view-category {
  display: none;
}

.view-category.active {
  display: block;
}

.view-grid {
  display: grid;
  gap: 18px;
}

.overview-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.overview-grid .vmodel-surface {
  grid-column: 1 / -1;
}

.analyze-grid,
.inspect-grid {
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.88fr);
}

.graph-surface {
  min-height: 490px;
}

#graph-canvas,
#vmodel-canvas,
#sankey-canvas {
  width: 100%;
  margin-top: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(#fff, #fff) padding-box,
    repeating-linear-gradient(0deg, rgba(18, 106, 114, 0.07), rgba(18, 106, 114, 0.07) 1px, transparent 1px, transparent 42px);
}

#graph-canvas,
#sankey-canvas {
  height: 420px;
}

#vmodel-canvas {
  height: 510px;
}

.graph-controls {
  display: grid;
  grid-template-columns: minmax(140px, 0.7fr) minmax(210px, 1fr);
  gap: 8px;
  min-width: 0;
  width: 100%;
}

.graph-surface .section-head {
  align-items: flex-start;
  flex-wrap: wrap;
}

.focus-caption {
  margin: 8px 0 0;
}

.coverage-dashboard,
.version-list,
.provenance-list {
  margin-top: 12px;
  display: grid;
  gap: 10px;
}

.coverage-card,
.version-card,
.provenance-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  background: #fff;
}

.coverage-card {
  display: grid;
  gap: 5px;
}

.coverage-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.coverage-card.wide {
  grid-column: 1 / -1;
}

.coverage-card strong {
  display: block;
  font-size: 1.45rem;
}

.coverage-card span,
.version-card span,
.provenance-card span {
  color: var(--muted);
  font-size: 0.86rem;
}

.mini-bars {
  display: grid;
  gap: 8px;
}

.bar-row {
  display: grid;
  grid-template-columns: minmax(90px, 0.9fr) minmax(0, 1.2fr) 42px;
  align-items: center;
  gap: 8px;
  font-size: 0.86rem;
}

.bar-track {
  height: 8px;
  border-radius: 999px;
  background: #edf0f4;
  overflow: hidden;
}

.bar-fill {
  width: var(--bar, 0%);
  height: 100%;
  border-radius: inherit;
  background: var(--accent);
}

.matrix-wrap {
  margin-top: 12px;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.trace-matrix {
  min-width: 720px;
}

.trace-matrix td,
.trace-matrix th {
  text-align: center;
}

.trace-matrix th:first-child,
.trace-matrix td:first-child {
  text-align: left;
  font-weight: 700;
}

.heat-cell {
  background: color-mix(in srgb, var(--accent) var(--heat, 0%), #fff);
  color: #14212b;
  font-weight: 700;
}

.status-chip {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 2px 8px;
  border-radius: 999px;
  background: #edf4f5;
  color: var(--accent-strong);
  font-size: 0.78rem;
  font-weight: 700;
  white-space: nowrap;
}

.status-chip.warn {
  background: #fff5e8;
  color: var(--warn);
}

.status-chip.danger {
  background: #fff0f0;
  color: var(--danger);
}

.version-card,
.provenance-card {
  display: grid;
  gap: 6px;
}

.version-card header,
.provenance-card header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}

.version-card strong,
.provenance-card strong {
  overflow-wrap: anywhere;
}

.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.meta-row .pill {
  background: #f1f4f8;
  color: #344054;
}

.empty-state {
  padding: 20px;
  border: 1px dashed var(--line);
  border-radius: 8px;
  color: var(--muted);
  background: #fff;
}

.graph-node {
  cursor: pointer;
}

.query-form {
  display: grid;
  gap: 10px;
  margin-top: 10px;
}

.check-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
}

.check-row input {
  width: auto;
}

.json-output {
  margin: 12px 0 0;
  max-height: 360px;
  overflow: auto;
  padding: 12px;
  background: #1f2630;
  color: #e9eef5;
  border-radius: 8px;
  white-space: pre-wrap;
  font-size: 0.86rem;
}

.tabs {
  display: flex;
  gap: 8px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 8px;
}

.tab {
  padding: 0 14px;
}

.tab.active {
  color: #fff;
  background: var(--ink);
  border-color: var(--ink);
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

.table-wrap {
  margin-top: 12px;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 760px;
}

th,
td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  background: #f1f4f8;
  position: sticky;
  top: 0;
}

td {
  overflow-wrap: anywhere;
}

.evidence-list {
  margin-top: 12px;
  display: grid;
  gap: 10px;
}

.evidence-item {
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent);
  border-radius: 7px;
  padding: 10px 12px;
  background: #fff;
}

.evidence-item strong {
  display: block;
}

.pill {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 2px 8px;
  border-radius: 999px;
  background: #edf4f5;
  color: var(--accent-strong);
  font-size: 0.78rem;
  font-weight: 700;
}

#toast {
  position: fixed;
  right: 18px;
  bottom: 18px;
  max-width: min(460px, calc(100vw - 36px));
  padding: 12px 14px;
  border-radius: 8px;
  background: var(--ink);
  color: #fff;
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 160ms ease, transform 160ms ease;
  pointer-events: none;
}

#toast.show {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
  }

  .work-grid,
  .support-grid,
  .overview-grid,
  .analyze-grid,
  .inspect-grid,
  .metrics {
    grid-template-columns: 1fr;
  }

  .toolbar {
    flex-direction: column;
  }

  .view-tabs {
    width: 100%;
  }

  .view-tab {
    flex: 1;
  }

  .graph-controls,
  .coverage-grid {
    grid-template-columns: 1fr;
  }
}