:root {
  --chart-paper: #e8eff0;
  --chart-white: #f8fbfa;
  --chart-ink: #0b2b3b;
  --chart-blue: #147d92;
  --chart-blue-soft: #c5dfe2;
  --runway: #f3c64e;
  --alert: #d94b3d;
  --fog: #71878f;
  --hairline: #adc0c5;
  --font-ui: "Noto Sans SC", "IBM Plex Sans", sans-serif;
  --font-display: "IBM Plex Sans Condensed", "Noto Sans SC", sans-serif;
  --ink: var(--chart-ink);
  --deep: #dce7e8;
  --panel: var(--chart-white);
  --panel-2: #d8e7e8;
  --line: var(--hairline);
  --muted: var(--fog);
  --paper: var(--chart-ink);
  --signal: var(--chart-blue);
  --route: var(--runway);
  --sky: var(--chart-blue);
  --danger: var(--alert);
}

html,
body {
  background: var(--chart-paper);
  color: var(--chart-ink);
}

body::before {
  opacity: .24;
  background-image:
    linear-gradient(rgba(11,43,59,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(11,43,59,.045) 1px, transparent 1px);
  background-size: 24px 24px;
}

.app-shell { min-height: 100vh; }

.topbar {
  height: 76px;
  grid-template-columns: 300px 1fr 330px;
  border-bottom: 1px solid var(--chart-ink);
  padding: 0 28px;
  background: var(--chart-white);
  position: sticky;
  top: 0;
  z-index: 20;
}

.brand { align-items: center; gap: 12px; }
.brand > span:nth-child(2) {
  font-size: 27px;
  letter-spacing: -.025em;
}
.brand small {
  max-width: 86px;
  padding-left: 10px;
  border-left: 1px solid var(--hairline);
  color: var(--fog);
  line-height: 1.35;
}
.brand-mark { width: 34px; }
.brand-mark i { height: 2px; background: var(--chart-blue); }

.view-tabs { align-items: stretch; gap: 5px; }
.view-tab {
  min-width: 92px;
  padding: 0 12px;
  border-bottom: 5px solid transparent;
  color: #536b74;
  font-size: 12px;
  font-weight: 600;
}
.view-tab:hover { color: var(--chart-ink); background: #edf4f4; }
.view-tab.is-active {
  color: var(--chart-ink);
  border-bottom-color: var(--runway);
}

.top-actions { gap: 18px; }
.language-toggle {
  height: 34px;
  border: 1px solid var(--chart-ink);
  color: var(--fog);
  background: transparent;
}
.language-toggle b { color: var(--chart-ink); }
.top-status { color: var(--fog); }
.top-status strong { color: var(--chart-ink); font-family: var(--font-display); }
.top-status.is-demo span { background: var(--runway); box-shadow: none; }
.top-status.is-live span { background: var(--chart-blue); box-shadow: none; }

.workspace {
  min-height: calc(100vh - 76px);
  grid-template-columns: minmax(0, 1fr) 380px;
  grid-template-rows: auto minmax(350px, 1fr);
  background: var(--chart-paper);
}

.loom-stage {
  grid-column: 1;
  grid-row: 1 / 3;
  min-height: calc(100vh - 76px);
  grid-template-rows: 94px minmax(540px, 1fr) 102px;
  color: var(--chart-ink);
  background: var(--chart-paper);
  border-right: 1px solid var(--chart-ink);
}

.stage-toolbar {
  padding: 17px 24px 14px 30px;
  border-bottom: 1px solid var(--hairline);
  background: rgba(248,251,250,.72);
}
.stage-toolbar::before {
  content: "RL / NETWORK PLOT / 001";
  position: absolute;
  right: 400px;
  top: 87px;
  color: #789099;
  font: 600 9px var(--font-display);
  letter-spacing: .08em;
}
.stage-kicker {
  color: var(--chart-blue);
  font: 600 10px var(--font-display);
  letter-spacing: .04em;
}
.stage-toolbar h2 {
  margin-top: 8px;
  font-size: clamp(26px, 2.2vw, 38px);
  letter-spacing: -.02em;
}
.stage-toolbar h2 b { color: var(--chart-blue); }
.stage-metrics { gap: 22px; }
.stage-metrics span { color: var(--fog); font-size: 9px; }
.stage-metrics strong { color: var(--chart-ink); font-size: 27px; }

.graph-wrap {
  background:
    linear-gradient(90deg, transparent 49.9%, rgba(11,43,59,.08) 50%, transparent 50.1%),
    linear-gradient(transparent 49.9%, rgba(11,43,59,.08) 50%, transparent 50.1%);
}
.graph-wrap::before,
.graph-wrap::after {
  position: absolute;
  z-index: 2;
  color: #6f878e;
  font: 500 9px var(--font-display);
  letter-spacing: .05em;
  pointer-events: none;
}
.graph-wrap::before { content: "090° E  ·  ROUTE NETWORK PROJECTION"; top: 16px; left: 30px; }
.graph-wrap::after { content: "EVIDENCE VIEW  /  NOT FOR NAVIGATION"; right: 22px; bottom: 17px; }
#networkGraph { filter: none; }
#grid path { stroke: rgba(11,43,59,.085); }
.world-outline {
  fill: rgba(20,125,146,.055);
  stroke: rgba(20,125,146,.25);
  stroke-width: 1;
}
.route-path { stroke: rgba(20,125,146,.32); stroke-width: 1.35; }
.route-path.is-selected {
  stroke: #d6a81c;
  stroke-width: 3;
  filter: none;
  stroke-dasharray: 9 5;
}
.route-path.is-direct { stroke: var(--chart-blue); }
.node circle { fill: var(--chart-white); stroke: var(--chart-blue); }
.node text { fill: var(--chart-ink); }
.node .city-label { fill: #637b83; }
.node.is-terminal circle { fill: var(--runway); stroke: var(--chart-ink); filter: none; }
.node.is-stop circle { fill: var(--chart-white); stroke: #c49a1c; }
.airline-node rect { fill: var(--chart-ink); }
.airline-node text { fill: var(--chart-white); }
.graph-caption { display: none; }
.graph-empty { background: rgba(232,239,240,.9); }

.journey-strip {
  border-top: 1px solid var(--chart-ink);
  padding: 16px 30px;
  background: var(--chart-white);
}
.journey-segment { min-width: 145px; }
.journey-segment:not(:last-child)::after { border-top: 3px solid var(--runway); }
.journey-segment strong { color: var(--chart-ink); font-size: 26px; }
.journey-segment span { color: var(--fog); }
.journey-segment em { color: #80670c; font-weight: 600; }

.query-panel {
  grid-column: 2;
  grid-row: 1;
  border: 0;
  border-bottom: 1px solid var(--chart-ink);
  padding: 24px 26px 20px;
  background: var(--chart-white);
}
.panel-heading { display: block; }
.panel-heading p { display: none; }
.panel-heading h1 {
  margin: 0 0 22px;
  font-size: 29px;
  letter-spacing: -.025em;
}
form > label { color: #536b74; }
.airport-input {
  height: 54px;
  border: 1px solid var(--chart-ink);
  background: transparent;
}
.airport-input:focus-within { border-color: var(--chart-blue); box-shadow: inset 4px 0 var(--chart-blue); }
.airport-input strong {
  color: var(--chart-ink);
  border-right: 1px solid var(--hairline);
  font-size: 25px;
}
.airport-input input { color: var(--chart-ink); }
.swap-button {
  margin: -1px auto;
  border: 1px solid var(--chart-ink);
  color: var(--chart-ink);
  background: var(--runway);
}
.query-options { margin: 15px 0 12px; }
.query-options label { color: var(--fog); }
.query-options input,
.query-options select {
  height: 36px;
  border: 1px solid var(--hairline);
  color: var(--chart-ink);
  background: var(--chart-paper);
  color-scheme: light;
}
.primary-action {
  height: 46px;
  color: var(--chart-white);
  background: var(--chart-ink);
}
.primary-action:hover { background: var(--chart-blue); }
.legend { display: none; }
.data-caution {
  margin-top: 13px;
  padding: 9px 11px;
  border: 0;
  border-left: 4px solid var(--runway);
  color: #647b82;
  background: #f0f4ed;
  line-height: 1.5;
}
.data-caution strong { color: var(--chart-ink); }

.result-panel {
  grid-column: 2;
  grid-row: 2;
  max-height: none;
  padding: 0;
  border: 0;
  background: var(--chart-white);
}
.result-heading {
  height: 46px;
  padding: 0 20px;
  border-bottom: 1px solid var(--hairline);
  color: var(--chart-ink);
}
.result-heading button { color: var(--chart-blue); }
.route-results { gap: 0; }
.route-card {
  padding: 18px 20px;
  border: 0;
  border-bottom: 1px solid var(--hairline);
  background: transparent;
}
.route-card:hover { background: #eef5f5; }
.route-card.is-selected {
  border-color: var(--hairline);
  box-shadow: inset 7px 0 var(--runway);
  background: #f5f0d9;
}
.carrier-badge { color: var(--chart-white); background: var(--chart-ink); }
.route-top span { color: #8b700f; }
.route-line b { font-size: 27px; }
.route-line i { background: var(--hairline); }
.route-line i::after { background: var(--chart-blue); }
.route-meta,.risk { color: var(--fog); }
.risk { border-top-color: var(--hairline); }
.risk b { color: #8b700f; }

.directory,
.channels,
.admin {
  min-height: calc(100vh - 76px);
  color: var(--chart-ink);
  background: var(--chart-paper);
}
.directory { grid-template-rows: 130px 1fr; padding: 0 30px 30px; }
.directory-header { border-bottom-color: var(--chart-ink); }
.directory-header p,.channels-header p { color: var(--chart-blue); letter-spacing: .02em; }
.directory-header h2,.channels-header h2 { font-size: 36px; letter-spacing: -.025em; }
.directory-header input {
  border: 1px solid var(--chart-ink);
  color: var(--chart-ink);
  background: var(--chart-white);
}
.directory-layout { grid-template-columns: 150px minmax(500px,1fr) 350px; }
.region-rail { border-right-color: var(--chart-ink); }
.region-button { color: var(--fog); }
.region-button.is-active { color: var(--chart-ink); border-left-color: var(--runway); background: #f4efd6; }
.airline-row {
  border-color: var(--hairline);
  color: var(--chart-ink);
  background: rgba(248,251,250,.55);
}
.airline-row:hover,.airline-row.is-active { background: var(--chart-white); }
.airline-row.is-active { box-shadow: inset 5px 0 var(--runway); }
.airline-row header span,.airline-detail .big-code { color: var(--chart-blue); }
.airline-row p,.airline-detail > p { color: var(--fog); }
.airline-detail {
  border-left-color: var(--chart-ink);
  background: var(--chart-white);
}
.detail-list dt { color: var(--fog); }
.official-link { color: var(--chart-white); background: var(--chart-ink); }
.evidence-note { border-color: var(--hairline); color: var(--fog); }

.channels { padding: 48px max(35px,7vw); }
.channels-header > span { color: var(--fog); }
.channel-flow { border-top: 1px solid var(--chart-ink); gap: 0; }
.channel-card {
  min-height: 330px;
  padding: 25px 24px;
  border: 0;
  border-right: 1px solid var(--hairline);
  background: rgba(248,251,250,.55);
}
.channel-card:last-child { border-right: 0; }
.channel-card.booking { box-shadow: inset 0 6px #326a9b; }
.channel-card.trip { box-shadow: inset 0 6px var(--runway); }
.channel-card.google { box-shadow: inset 0 6px var(--chart-blue); }
.channel-name > span { color: #879ba1; }
.flow-diagram i { border-color: var(--hairline); }
.channel-card p { color: #46616a; }
.channel-card small { color: var(--chart-blue); }
.evidence-scale { border-color: var(--chart-ink); }
.evidence-scale div { border-right-color: var(--hairline); background: var(--chart-white); }
.evidence-scale b { color: var(--chart-ink); }
.evidence-scale small { color: var(--fog); }

.admin { grid-template-columns: 235px minmax(0,1fr); }
.admin-rail {
  border-right-color: var(--chart-ink);
  background: var(--chart-ink);
  color: var(--chart-white);
}
.admin-rail-title span,.admin-nav-button.is-active span { color: var(--runway); }
.admin-nav-button { color: #9db0b6; }
.admin-nav-button span { color: #d3dee0; }
.admin-nav-button small,.admin-nav-button i { color: #78909a; }
.admin-nav-button.is-active { border-left-color: var(--runway); background: #153e50; }
.admin-nav-button b { color: var(--chart-ink); background: var(--runway); }
.admin-safety { border-top-color: #385565; }
.admin-safety b { color: var(--runway); }
.admin-main { background: var(--chart-paper); }
.admin-header { border-bottom-color: var(--chart-ink); }
.admin-header p,.ops-card header span,.scan-console > div > span { color: var(--chart-blue); }
.primary-compact { color: var(--chart-white); background: var(--chart-ink); }
.secondary-action { color: var(--chart-ink); border-color: var(--chart-ink); }
.metric-grid article,.ops-card,.data-table,.scan-console {
  border-color: var(--hairline);
  background: var(--chart-white);
}
.metric-grid span,.ops-card p,.attention-item span { color: var(--fog); }
.metric-grid small.warn,.attention-item em { color: var(--alert); }
.health-bars i { border-top-color: var(--chart-blue); background: linear-gradient(rgba(20,125,146,.26),rgba(20,125,146,.03)); }
.data-table-wrap,.data-table td,.review-layout,.change-detail,.diff-box,.diff-row + .diff-row { border-color: var(--hairline); }
.data-table th { color: #55717a; background: #dce8e9; }
.data-table td { color: #4f6870; }
.data-table td strong { color: var(--chart-ink); }
.status-chip { color: var(--chart-blue); border-color: var(--chart-blue-soft); }
.status-chip.warn { color: #8b700f; border-color: #d4bd6e; }
.review-filter,.change-item { border-color: var(--hairline); }
.change-item { color: var(--chart-ink); }
.change-item:hover,.change-item.is-active { background: #f4efd6; }
.change-type { color: var(--chart-blue); border-color: var(--chart-blue); }
.change-item p,.change-detail > p { color: var(--fog); }
.change-detail { background: var(--chart-white); }
.command-dialog { color: var(--chart-ink); border-color: var(--chart-ink); background: var(--chart-white); }
.command-dialog::backdrop { background: rgba(11,43,59,.55); }
.command-dialog select { color: var(--chart-ink); border-color: var(--hairline); background: var(--chart-paper); }
.ghost-action { color: var(--fog); border-color: var(--hairline); background: transparent; }
.toast { color: var(--chart-white); background: var(--chart-ink); }

@media (max-width: 1120px) {
  .topbar { grid-template-columns: 250px 1fr; }
  .workspace { grid-template-columns: minmax(0,1fr) 340px; }
  .loom-stage { grid-column: 1; grid-row: 1/3; }
  .result-panel { grid-column: 2; grid-row: 2; border-top: 0; }
  .route-results { grid-template-columns: 1fr; }
  .stage-toolbar::before { display: none; }
}

@media (max-width: 820px) {
  .topbar { min-height: 116px; padding: 12px 15px 0; grid-template-columns: 1fr; }
  .view-tabs { height: 48px; }
  .workspace { display: grid !important; grid-template-columns: 1fr; grid-template-rows: auto 620px auto; }
  .query-panel { grid-column: 1; grid-row: 1; border-bottom: 1px solid var(--chart-ink); }
  .loom-stage { grid-column: 1; grid-row: 2; min-height: 620px; grid-template-rows: 84px 450px 86px; border-right: 0; }
  .result-panel { grid-column: 1; grid-row: 3; }
  .stage-toolbar { padding: 14px 18px; }
  .stage-toolbar h2 { font-size: 25px; }
  .journey-strip { padding: 13px 18px; }
  .directory,.channels,.admin { min-height: calc(100vh - 116px); }
  .channel-flow { grid-template-columns: 1fr; }
  .channel-card { min-height: auto; border-right: 0; border-bottom: 1px solid var(--hairline); }
}

@media (max-width: 520px) {
  .brand > span:nth-child(2) { font-size: 23px; }
  .view-tab { padding: 0 5px; font-size: 10px; }
  .panel-heading p { display: none; }
  .query-panel { padding: 20px 16px; }
  .workspace { grid-template-rows: auto 560px auto; }
  .loom-stage { min-height: 560px; grid-template-rows: 92px 390px 78px; }
  .stage-toolbar { display: block; }
  .stage-metrics { margin-top: 10px; text-align: left; }
  .stage-metrics strong { display: inline; margin-right: 4px; font-size: 18px; }
  .journey-segment { min-width: 112px; }
  .directory { padding: 0 16px 20px; }
  .directory-header h2,.channels-header h2 { font-size: 29px; }
  .metric-grid { grid-template-columns: 1fr 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  .route-path.is-selected { animation: none; }
}