/* Virtual Jebel Ali — tokens follow the validated reference palette (dataviz). */
:root {
  color-scheme: light;
  --page: #f9f9f7;
  --surface: #fcfcfb;
  --ink: #0b0b0b;
  --ink-2: #52514e;
  --muted: #898781;
  --grid: #e1e0d9;
  --axis: #c3c2b7;
  --border: rgba(11, 11, 11, 0.1);
  --s1: #2a78d6; /* blue */
  --s2: #eb6834; /* orange */
  --s3: #1baf7a; /* aqua */
  --s4: #eda100; /* yellow */
  --good: #0ca30c;
  --warning: #fab219;
  --serious: #ec835a;
  --critical: #d03b3b;
  --delta-good: #006300;
  --radius: 12px;
  --font: system-ui, -apple-system, "Segoe UI", sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --page: #0d0d0d;
    --surface: #1a1a19;
    --ink: #f0efec;
    --ink-2: #c3c2b7;
    --muted: #898781;
    --grid: #2c2c2a;
    --axis: #383835;
    --border: rgba(255, 255, 255, 0.1);
    --s1: #3987e5;
    --s2: #d95926;
    --s3: #199e70;
    --s4: #c98500;
    --delta-good: #0ca30c;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --page: #0d0d0d;
  --surface: #1a1a19;
  --ink: #f0efec;
  --ink-2: #c3c2b7;
  --muted: #898781;
  --grid: #2c2c2a;
  --axis: #383835;
  --border: rgba(255, 255, 255, 0.1);
  --s1: #3987e5;
  --s2: #d95926;
  --s3: #199e70;
  --s4: #c98500;
  --delta-good: #0ca30c;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font: 15px/1.5 var(--font);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--s1); }
h1, h2, h3, h4 { line-height: 1.2; margin: 0 0 0.4em; }
h1 { font-size: clamp(28px, 4vw, 40px); letter-spacing: -0.01em; }
h2 { font-size: clamp(22px, 3vw, 28px); margin-top: 0; }
h3 { font-size: 17px; }
h4 { font-size: 15px; margin-top: 1em; }
p { margin: 0 0 0.8em; }
b, strong { font-weight: 650; }
.muted { color: var(--ink-2); }
.small { font-size: 13px; }
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 16px; }

/* header */
.top { border-bottom: 1px solid var(--border); background: var(--surface); }
.top-row { display: flex; gap: 24px; justify-content: space-between; align-items: flex-start; padding: 28px 16px 12px; flex-wrap: wrap; }
.eyebrow { font-size: 12px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--ink-2); margin-bottom: 6px; }
.lead { max-width: 820px; font-size: 16px; color: var(--ink-2); }
.lead strong { color: var(--ink); }
.status { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; max-width: 320px; }
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px; border-radius: 999px; border: 1px solid var(--border);
  font-size: 12px; color: var(--ink-2); background: var(--page); white-space: nowrap;
}
.chip::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--muted); }
.chip.live::before { background: var(--good); }
.chip.snapshot::before { background: var(--warning); }
.chip.off::before { background: var(--critical); }
.sections { display: flex; gap: 4px; overflow-x: auto; padding: 0 16px 10px; }
.sections a { padding: 6px 10px; border-radius: 8px; color: var(--ink-2); text-decoration: none; font-size: 14px; white-space: nowrap; }
.sections a:hover { background: var(--page); color: var(--ink); }

main section { padding: 40px 0 8px; }
main section + section { border-top: 1px solid var(--border); }

/* cards + grids */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; margin: 0 0 16px; }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.corridor-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 16px; }
.savings-grid { display: grid; grid-template-columns: 1fr 1.3fr; gap: 16px; align-items: start; }
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
@media (max-width: 900px) {
  .two, .corridor-grid, .savings-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) { .steps { grid-template-columns: 1fr; } }

/* KPI tiles */
.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 12px; margin-bottom: 16px; }
.tile { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; }
.tile .label { font-size: 13px; color: var(--ink-2); }
.tile .value { font-size: 28px; font-weight: 650; margin: 2px 0; }
.tile .delta { font-size: 13px; display: flex; gap: 6px; align-items: center; color: var(--ink-2); }
.tile .delta.down { color: var(--critical); }
.tile .delta.up { color: var(--delta-good); }
.tile .spark { margin-top: 8px; display: block; width: 100%; height: 36px; }
.tile .sub { font-size: 12px; color: var(--muted); margin-top: 4px; }
.skeleton { color: var(--muted); }

/* charts */
figure.card figcaption { display: flex; flex-direction: column; gap: 2px; margin-bottom: 8px; }
figure.card figcaption .muted { font-size: 13px; }
.chart-host { position: relative; width: 100%; min-height: 160px; }
.chart-host svg { display: block; width: 100%; height: 100%; overflow: visible; }
.chart-host .grid { stroke: var(--grid); stroke-width: 1; }
.chart-host .axis { fill: var(--muted); font-size: 11px; font-variant-numeric: tabular-nums; }
.chart-host .axis.end { text-anchor: end; }
.chart-host .axis.middle { text-anchor: middle; }
.chart-host .series { stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.chart-host .marker { stroke: var(--surface); stroke-width: 2; }
.chart-host .annot { stroke: var(--axis); stroke-dasharray: 3 3; }
.chart-host .annot-label { fill: var(--ink-2); font-size: 11px; }
.chart-host .end-label { fill: var(--ink); font-size: 12px; font-weight: 600; }
.chart-host .crosshair { stroke: var(--axis); stroke-width: 1; pointer-events: none; }
.chart-host .bar-label { fill: var(--ink-2); font-size: 12px; }
.chart-host .bar-value { fill: var(--ink); font-size: 12px; font-weight: 600; font-variant-numeric: tabular-nums; }
.chart-host .hit { fill: transparent; cursor: crosshair; }
.tooltip {
  position: absolute; pointer-events: none; z-index: 5;
  background: var(--surface); color: var(--ink); border: 1px solid var(--border);
  border-radius: 8px; padding: 8px 10px; font-size: 12px; line-height: 1.4;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12); max-width: 260px; display: none;
}
.tooltip .t-row { display: flex; gap: 8px; align-items: center; }
.tooltip .t-row .sw { width: 10px; height: 10px; border-radius: 2px; flex: none; }
.legend { display: flex; flex-wrap: wrap; gap: 14px; font-size: 13px; color: var(--ink-2); margin-bottom: 6px; }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.sw { display: inline-block; width: 14px; height: 4px; border-radius: 2px; }
.dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; }

details summary { cursor: pointer; color: var(--ink-2); font-size: 13px; margin-top: 8px; }
.table-scroll { overflow-x: auto; }
table.data { width: 100%; border-collapse: collapse; font-size: 13px; }
table.data th, table.data td { text-align: left; padding: 7px 8px; border-bottom: 1px solid var(--grid); vertical-align: top; }
table.data th { color: var(--ink-2); font-weight: 600; }
table.data td.num, table.data th.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
table.data.compact td { padding: 6px 8px; }
table.data.compact td:first-child { white-space: nowrap; width: 34%; }
table.receipt td:last-child { text-align: right; font-variant-numeric: tabular-nums; }
table.receipt tr.total td { font-weight: 700; border-top: 2px solid var(--axis); }
.bar-cell { position: relative; }
.bar-cell i { display: block; height: 6px; border-radius: 0 3px 3px 0; background: var(--s2); }

/* timeline & facts */
.timeline, .facts, .phases { margin: 0; padding-left: 18px; }
.timeline li, .facts li, .phases li { margin-bottom: 8px; }
.timeline b { color: var(--ink); margin-right: 4px; }
.src { display: block; font-size: 12px; color: var(--muted); }

/* map */
.map-card { padding: 0; overflow: hidden; }
#map { height: 480px; width: 100%; background: var(--page); }
.map-legend { display: flex; flex-wrap: wrap; gap: 12px; padding: 10px 14px; font-size: 13px; color: var(--ink-2); border-top: 1px solid var(--border); }
.map-legend span { display: inline-flex; align-items: center; gap: 6px; }
.leaflet-container { font: inherit; }
/* dark theme: darken the OpenStreetMap tiles */
:root[data-theme="dark"] .leaflet-tile-pane { filter: invert(1) hue-rotate(180deg) brightness(.85) contrast(.9); }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .leaflet-tile-pane { filter: invert(1) hue-rotate(180deg) brightness(.85) contrast(.9); } }
.leaflet-container a { color: var(--s1); }
.leaflet-tooltip { background: var(--surface); color: var(--ink); border-color: var(--border); }

/* controls */
.controls { display: flex; flex-direction: column; gap: 10px; }
.controls label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--ink-2); }
.controls label.check { flex-direction: row; align-items: center; gap: 8px; color: var(--ink); }
.controls select, .controls input[type="number"], .controls input[type="text"], .controls input[type="date"] {
  font: inherit; padding: 7px 9px; border-radius: 8px; border: 1px solid var(--axis); background: var(--page); color: var(--ink);
}
.controls input[type="range"] { width: 100%; accent-color: var(--s1); }
.controls output { color: var(--ink); font-weight: 600; margin-left: 6px; }
.controls fieldset { border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px; }
.controls legend { font-size: 13px; color: var(--ink-2); padding: 0 4px; }
.mix { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.mix label { font-size: 12px; }
.mix input { width: 100%; }
.assump label { margin-top: 6px; }
.btn {
  font: inherit; font-weight: 600; padding: 9px 14px; border-radius: 8px; border: 1px solid var(--s1);
  background: var(--s1); color: #fff; cursor: pointer;
}
.btn.ghost { background: transparent; color: var(--ink); border-color: var(--border); padding: 5px 10px; font-size: 13px; }
.btn:hover { filter: brightness(1.05); }

/* comparison cards */
.compare { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 14px; }
.compare .route { border: 1px solid var(--border); border-radius: 10px; padding: 12px; border-top: 4px solid var(--s2); }
.compare .route.virtual { border-top-color: var(--s1); }
.compare h4 { margin: 0 0 6px; font-size: 14px; }
.compare .big { font-size: 24px; font-weight: 650; }
.compare .row { display: flex; justify-content: space-between; font-size: 13px; color: var(--ink-2); padding: 2px 0; }
.compare ol { margin: 8px 0 0; padding-left: 16px; font-size: 12px; color: var(--ink-2); }
.compare .savings { grid-column: 1 / -1; background: var(--page); border-radius: 10px; padding: 12px; display: flex; flex-wrap: wrap; gap: 16px; }
.compare .savings div { font-size: 13px; color: var(--ink-2); }
.compare .savings b { display: block; font-size: 20px; color: var(--ink); }
@media (max-width: 560px) { .compare { grid-template-columns: 1fr; } }

/* observatory */
.index-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; margin-bottom: 16px; }
.index-row .tile .value { font-size: 24px; }

/* how it works */
.step { position: relative; padding-top: 22px; }
.step .num { position: absolute; top: -12px; left: 16px; width: 28px; height: 28px; border-radius: 50%; background: var(--s1); color: #fff; font-weight: 700; display: grid; place-items: center; font-size: 14px; }
.step p { font-size: 14px; color: var(--ink-2); margin: 0; }
.step b { color: var(--ink); }
.pitch p { font-size: 16px; }
.pitch span { font-weight: 700; color: var(--ink); }

/* sources */
.sources { padding-left: 18px; margin: 0 0 12px; font-size: 13px; color: var(--ink-2); }
.sources li { margin-bottom: 6px; }
footer { padding: 24px 16px 40px; }