:root {
  color-scheme: light;
  --bg: #f5f4ee;
  --ink: #171817;
  --muted: #62645d;
  --line: #cfcec4;
  --panel: #fffdf6;
  --panel-2: #ebe8dd;
  --accent: #255c4a;
  --accent-2: #9b5b22;
  --blue: #264f73;
  --bad: #8a2d28;
  --shadow: 0 18px 45px rgba(31, 35, 30, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body {
  margin: 0;
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

.app-shell {
  width: min(1420px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 42px;
}

.masthead {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(250px, 360px);
  gap: 18px;
  align-items: stretch;
}

.eyebrow,
.label {
  margin: 0;
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  max-width: 780px;
  margin-bottom: 10px;
  font-size: 3.2rem;
  line-height: 0.96;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 0;
  font-size: 1.18rem;
  line-height: 1.1;
  letter-spacing: 0;
}

.lede {
  max-width: 760px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.55;
}

.verifier-panel,
.metric-strip,
.control-rail,
.surface {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.verifier-panel {
  display: grid;
  align-content: center;
  min-height: 156px;
  padding: 18px;
}

.verifier-panel strong {
  display: block;
  margin-top: 10px;
  font-size: 1.7rem;
}

.verifier-panel span:last-child {
  margin-top: 8px;
  color: var(--muted);
  line-height: 1.4;
}

.verifier-panel.is-good {
  border-color: rgba(37, 92, 74, 0.48);
}

.verifier-panel.is-bad {
  border-color: rgba(138, 45, 40, 0.62);
}

.metric-strip {
  display: grid;
  grid-template-columns: 0.75fr 0.75fr 0.75fr minmax(220px, 1.4fr) minmax(260px, 1.7fr);
  gap: 1px;
  margin-top: 18px;
  background: var(--line);
}

.metric-strip > div {
  min-width: 0;
  padding: 14px;
  background: var(--panel);
}

.metric-strip strong,
.metric-strip code {
  display: block;
  margin-top: 8px;
  font-size: 1.35rem;
  font-weight: 800;
}

#metric-action {
  font-size: 1rem;
  line-height: 1.28;
}

code {
  overflow-wrap: anywhere;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.78rem;
}

.workspace {
  display: grid;
  grid-template-columns: 286px minmax(0, 1fr);
  gap: 16px;
  margin-top: 16px;
}

.control-rail {
  position: sticky;
  top: 16px;
  align-self: start;
  padding: 14px;
}

.search-box {
  display: grid;
  gap: 8px;
}

.search-box input {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  color: var(--ink);
  padding: 0 11px;
}

.mode-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  margin-top: 14px;
}

.mode-button {
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel-2);
  color: var(--ink);
  font-weight: 760;
}

.mode-button.is-active {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}

.boundary-note {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.boundary-note p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.45;
}

.link-stack {
  display: grid;
  gap: 8px;
  margin-top: 14px;
}

.link-stack a {
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--ink);
  padding: 10px;
  text-decoration: none;
}

.link-stack a:hover,
.link-stack a:focus-visible {
  border-color: var(--blue);
  outline: none;
}

.preset-group {
  display: grid;
  gap: 7px;
  margin-top: 8px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.link-stack .preset-link {
  border-style: dashed;
  background: #fff;
}

.link-stack .preset-link.is-active {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}

.surface {
  min-height: 640px;
  padding: 16px;
}

.surface.is-hidden {
  display: none;
}

.section-head {
  display: flex;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.count-badge {
  flex: 0 0 auto;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel-2);
  padding: 6px 10px;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 760;
}

.timeline {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.record {
  display: grid;
  grid-template-columns: 78px minmax(0, 1fr) minmax(190px, 0.32fr);
  gap: 14px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  padding: 13px;
}

.record-index {
  color: var(--accent-2);
  font-size: 1.55rem;
  font-weight: 850;
  line-height: 1;
}

.record h3 {
  margin: 0;
  font-size: 1rem;
  line-height: 1.25;
  letter-spacing: 0;
}

.record p {
  margin: 7px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.45;
}

.record-meta {
  display: grid;
  gap: 7px;
  align-content: start;
  color: var(--muted);
  font-size: 0.78rem;
}

.hash-line {
  display: block;
  color: var(--blue);
}

.graph-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 14px;
}

.graph-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.filter-button {
  min-height: 36px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: var(--ink);
  padding: 6px 10px;
  font-weight: 760;
}

.filter-button span {
  display: inline-grid;
  min-width: 22px;
  height: 22px;
  margin-left: 7px;
  place-items: center;
  border-radius: 999px;
  background: var(--panel-2);
  color: var(--muted);
  font-size: 0.75rem;
}

.filter-button.is-active {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}

.filter-button.is-active span {
  background: rgba(255, 255, 255, 0.18);
  color: #fff;
}

.status-column {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  padding: 10px;
}

.status-column h3 {
  margin: 0 0 9px;
  color: var(--accent);
  font-size: 0.82rem;
  text-transform: uppercase;
}

.node-button {
  display: block;
  width: 100%;
  min-height: 68px;
  margin-top: 7px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel);
  color: var(--ink);
  padding: 9px;
  text-align: left;
}

.node-button:hover,
.node-button:focus-visible,
.node-button.is-selected {
  border-color: var(--blue);
  outline: none;
}

.node-button strong {
  display: block;
  font-size: 0.9rem;
  line-height: 1.2;
}

.node-button span {
  display: block;
  margin-top: 5px;
  color: var(--muted);
  font-size: 0.78rem;
}

.node-detail {
  margin-top: 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  padding: 13px;
}

.node-detail h3 {
  margin: 5px 0 0;
  font-size: 1rem;
}

.node-detail-head {
  display: flex;
  gap: 12px;
  align-items: start;
  justify-content: space-between;
}

.node-detail p {
  margin: 8px 0 0;
  color: var(--muted);
  line-height: 1.45;
}

.node-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.node-actions a,
.node-actions button {
  min-height: 34px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel-2);
  color: var(--ink);
  padding: 7px 10px;
  font-size: 0.82rem;
  font-weight: 760;
  text-decoration: none;
}

.node-actions a:hover,
.node-actions a:focus-visible,
.node-actions button:hover,
.node-actions button:focus-visible {
  border-color: var(--blue);
  outline: none;
}

.node-lists {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 12px;
}

.node-lists strong {
  color: var(--accent);
  font-size: 0.78rem;
  text-transform: uppercase;
}

.node-lists ul {
  margin: 8px 0 0;
  padding-left: 18px;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.45;
}

.node-lists li + li {
  margin-top: 5px;
}

.node-lists a {
  color: var(--blue);
}

.neighbor-list {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 10px;
}

.neighbor-list button {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel-2);
  padding: 5px 8px;
  color: var(--muted);
  font-size: 0.78rem;
}

.neighbor-list button:hover,
.neighbor-list button:focus-visible {
  border-color: var(--blue);
  color: var(--ink);
  outline: none;
}

.route-list {
  display: grid;
  gap: 10px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.route-step {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  padding: 13px;
}

.route-step .step-number {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid var(--accent);
  border-radius: 50%;
  color: var(--accent);
  font-weight: 850;
}

.route-step h3 {
  margin: 0;
  font-size: 1rem;
}

.route-step p {
  margin: 7px 0 0;
  color: var(--muted);
  line-height: 1.45;
}

.empty-state {
  border: 1px dashed var(--line);
  border-radius: 6px;
  color: var(--muted);
  margin-top: 14px;
  padding: 18px;
}

@media (max-width: 980px) {
  .masthead,
  .workspace,
  .metric-strip {
    grid-template-columns: 1fr;
  }

  .control-rail {
    position: static;
  }

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

  .node-lists {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .app-shell {
    width: min(100% - 20px, 1420px);
    padding-top: 16px;
  }

  h1 {
    font-size: 2.15rem;
  }

  .record,
  .route-step {
    grid-template-columns: 1fr;
  }

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

  .mode-list {
    grid-template-columns: 1fr;
  }
}