/* Zahma — night-city traffic lab. Amber = interface accent; the teal→red ramp is reserved for congestion data. */
:root {
  color-scheme: dark;
  --bg: #0A0E13; --bg2: #0E131A; --surface: #121921; --surface2: #172029; --line: #212B36; --line2: #2C3845;
  --ink: #E7ECF2; --muted: #8C99A9; --faint: #5E6A79; --accent: #F2B544; --accent-ink: #0A0E13; --accent-soft: rgba(242, 181, 68, .12);
  --c0: #2FB5A5; --c1: #9CCB5B; --c2: #F2C14E; --c3: #EF8A3C; --c4: #E4572E; --c5: #B21F3A;
  --good: #3FBF8F; --bad: #EF6B5B;
  --shadow: 0 1px 0 rgba(255, 255, 255, .03) inset, 0 20px 50px -30px rgba(0, 0, 0, .8);
  --display: "Bricolage Grotesque", "Instrument Sans", system-ui, sans-serif;
  --ui: "Instrument Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, Menlo, monospace;
}
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    color-scheme: light;
    --bg: #F3F5F8; --bg2: #EBEEF2; --surface: #FFFFFF; --surface2: #F7F9FB; --line: #DCE2E9; --line2: #C8D0DA;
    --ink: #0E141B; --muted: #566273; --faint: #8994A2; --accent: #B7790B; --accent-ink: #FFFFFF; --accent-soft: rgba(183, 121, 11, .1);
    --good: #13865F; --bad: #C9412F; --shadow: 0 1px 2px rgba(14, 20, 27, .05), 0 18px 40px -28px rgba(14, 20, 27, .35);
  }
}
:root[data-theme="light"] {
  color-scheme: light;
  --bg: #F3F5F8; --bg2: #EBEEF2; --surface: #FFFFFF; --surface2: #F7F9FB; --line: #DCE2E9; --line2: #C8D0DA;
  --ink: #0E141B; --muted: #566273; --faint: #8994A2; --accent: #B7790B; --accent-ink: #FFFFFF; --accent-soft: rgba(183, 121, 11, .1);
  --good: #13865F; --bad: #C9412F; --shadow: 0 1px 2px rgba(14, 20, 27, .05), 0 18px 40px -28px rgba(14, 20, 27, .35);
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 400 15.5px/1.6 var(--ui); }
a { color: var(--accent); text-underline-offset: 3px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 6px; }
h1, h2, h3 { margin: 0; font-family: var(--display); text-wrap: balance; }
p { margin: 0; }
button { font: inherit; color: inherit; }
.i { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }
.wrap { max-width: 1280px; margin: 0 auto; padding-inline: 20px; }
@media (max-width: 480px) { .wrap { padding-inline: 16px; } }

.top { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid var(--line); }
.top-in { display: flex; align-items: center; gap: 18px; padding-block: 10px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; }
.brand b { font: 700 19px/1 var(--display); letter-spacing: -.01em; }
.brand .ar { font: 600 15px/1 "Noto Kufi Arabic", sans-serif; color: var(--muted); }
.ramp { display: inline-flex; align-items: flex-end; gap: 2px; height: 20px; }
.ramp i { width: 4px; border-radius: 1px; }
.ramp i:nth-child(1) { height: 7px; background: var(--c0); } .ramp i:nth-child(2) { height: 11px; background: var(--c2); }
.ramp i:nth-child(3) { height: 15px; background: var(--c3); } .ramp i:nth-child(4) { height: 20px; background: var(--c4); }
.nav { display: flex; gap: 2px; margin-inline-start: auto; overflow-x: auto; scrollbar-width: none; }
.nav a { padding: 7px 11px; border-radius: 8px; color: var(--muted); text-decoration: none; font-size: 14px; font-weight: 500; white-space: nowrap; }
.nav a:hover { color: var(--ink); background: var(--surface); }
.icon-btn { width: 36px; height: 36px; display: grid; place-items: center; border-radius: 10px; border: 1px solid var(--line); background: var(--surface); cursor: pointer; flex: none; }
@media (max-width: 860px) { .nav { display: none; } .icon-btn { margin-inline-start: auto; } }

.hero { padding-block: clamp(40px, 7vw, 84px) 24px; display: grid; gap: 18px; }
.eyebrow { font: 500 12.5px var(--mono); color: var(--accent); letter-spacing: .04em; text-transform: uppercase; }
.hero h1 { font-size: clamp(34px, 5.6vw, 68px); font-weight: 700; line-height: 1.02; letter-spacing: -.03em; max-width: 16ch; }
.hl { background: linear-gradient(90deg, var(--c0), var(--c2) 45%, var(--c4)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lede { color: var(--muted); font-size: clamp(16px, 1.8vw, 19px); max-width: 62ch; }
.kpis { display: grid; grid-template-columns: repeat(6, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 16px; overflow: hidden; margin-top: 12px; }
.kpi { background: var(--surface); padding: 16px 18px; display: grid; gap: 4px; }
.kpi b { font: 600 clamp(22px, 2.6vw, 30px)/1.05 var(--display); font-variant-numeric: tabular-nums; }
.kpi span { color: var(--muted); font-size: 13px; line-height: 1.35; }
.kpi.acc b { color: var(--accent); }
@media (max-width: 980px) { .kpis { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 520px) { .kpis { grid-template-columns: repeat(2, 1fr); } }

.sec { padding-block: clamp(40px, 6vw, 72px) 0; }
.sec-head { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr); gap: 12px 40px; align-items: end; margin-bottom: 20px; }
.sec-head h2 { font-size: clamp(26px, 3.4vw, 40px); font-weight: 700; letter-spacing: -.02em; }
.sec-head p { color: var(--muted); max-width: 70ch; }
@media (max-width: 860px) { .sec-head { grid-template-columns: 1fr; } }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow); min-width: 0; }
.pad { padding: 18px 20px; }
.card h3 { font-size: 16px; font-weight: 600; }
.sub { color: var(--muted); font-size: 13px; margin-top: 2px; }
.mt { margin-top: 18px; }
.chart { width: 100%; height: 280px; }
.chart.tall { height: 420px; } .chart.short { height: 170px; }

/* map + city */
.map-grid { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); gap: 16px; align-items: start; }
@media (max-width: 1080px) { .map-grid { grid-template-columns: 1fr; } }
.map-card { overflow: hidden; }
.map-tools { display: flex; flex-wrap: wrap; gap: 10px 16px; align-items: center; justify-content: space-between; padding: 12px 14px; border-bottom: 1px solid var(--line); }
.seg { display: inline-flex; gap: 3px; padding: 3px; border-radius: 11px; background: var(--bg2); flex-wrap: wrap; }
.seg button { border: 0; background: transparent; padding: 6px 10px; border-radius: 8px; font-size: 13px; font-weight: 500; color: var(--muted); cursor: pointer; }
.seg button[aria-pressed="true"] { background: var(--surface2); color: var(--ink); box-shadow: 0 0 0 1px var(--line2); }
.legend { display: flex; align-items: center; gap: 8px; font: 400 11.5px var(--mono); color: var(--muted); flex-wrap: wrap; }
.legend .bar { width: 130px; height: 8px; border-radius: 4px; }
.legend .sw { display: inline-flex; align-items: center; gap: 5px; }
.legend .sw i { width: 10px; height: 10px; border-radius: 50%; }
.mapbox { height: 520px; }
@media (max-width: 640px) { .mapbox { height: 380px; } }
.chips { display: flex; gap: 6px; flex-wrap: wrap; padding: 12px 14px; border-top: 1px solid var(--line); align-items: center; }
.chips span { font-size: 12.5px; color: var(--muted); margin-inline-end: 4px; }
.chip { border: 1px solid var(--line2); background: var(--surface2); padding: 5px 10px; border-radius: 999px; font-size: 13px; cursor: pointer; }
.chip:hover, .chip[aria-pressed="true"] { border-color: var(--accent); color: var(--accent); }
.maplibregl-popup-content { background: var(--surface) !important; color: var(--ink); border: 1px solid var(--line2); border-radius: 10px !important; padding: 8px 10px !important; font: 400 12.5px var(--ui); box-shadow: var(--shadow) !important; }
.maplibregl-popup-tip { display: none; }
.maplibregl-ctrl-attrib { font-size: 10px; }

.city { padding: 18px 20px; display: grid; gap: 14px; }
.city-head { display: flex; justify-content: space-between; gap: 12px; align-items: flex-start; }
.city-head h3 { font-size: 24px; font-weight: 700; letter-spacing: -.01em; }
.city-head .where { color: var(--muted); font-size: 13.5px; }
.badge { display: inline-flex; align-items: center; gap: 6px; padding: 4px 9px; border-radius: 999px; font: 500 12px var(--mono); border: 1px solid var(--line2); color: var(--muted); white-space: nowrap; }
.badge.good { color: var(--good); border-color: color-mix(in srgb, var(--good) 45%, transparent); }
.badge.bad { color: var(--bad); border-color: color-mix(in srgb, var(--bad) 45%, transparent); }
.cstats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.cstats div { background: var(--surface2); padding: 10px 12px; display: grid; gap: 2px; }
.cstats b { font: 600 20px/1.1 var(--display); font-variant-numeric: tabular-nums; }
.cstats span { font-size: 12px; color: var(--muted); }
.chart.city-chart { height: 300px; }
.series-toggles { display: flex; gap: 6px; flex-wrap: wrap; }
.tog { display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--line2); background: transparent; padding: 4px 9px; border-radius: 8px; font-size: 12.5px; cursor: pointer; color: var(--muted); }
.tog i { width: 10px; height: 3px; border-radius: 2px; }
.tog[aria-pressed="true"] { color: var(--ink); border-color: var(--ink); }
.whatif { border: 1px dashed var(--line2); border-radius: 14px; padding: 14px; display: grid; gap: 10px; background: var(--bg2); }
.whatif h4 { margin: 0; font: 600 14px var(--display); display: flex; gap: 8px; align-items: center; }
.whatif h4 .live { font: 500 11px var(--mono); color: var(--accent); border: 1px solid var(--accent); border-radius: 999px; padding: 1px 7px; }
.wi-row { display: grid; grid-template-columns: 130px 1fr auto; gap: 10px; align-items: center; font-size: 13.5px; }
.wi-row select, .wi-row input[type=range] { width: 100%; }
.wi-row select { background: var(--surface); border: 1px solid var(--line2); border-radius: 8px; padding: 6px 8px; color: var(--ink); }
.wi-row output { font: 500 12.5px var(--mono); min-width: 52px; text-align: end; }
.wi-note { font-size: 12.5px; color: var(--muted); }
.wi-note b { color: var(--ink); font-weight: 600; }
.anoms { display: grid; gap: 6px; font-size: 13px; }
.anoms div { display: flex; justify-content: space-between; gap: 10px; padding: 7px 10px; border-radius: 8px; background: var(--surface2); }
.anoms .mono { font-family: var(--mono); font-size: 12px; color: var(--muted); }
.empty { color: var(--muted); font-size: 13.5px; }

/* accuracy */
.acc-grid { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: 16px; }
.acc-grid > :first-child { grid-row: span 2; }
@media (max-width: 1000px) { .acc-grid { grid-template-columns: 1fr; } .acc-grid > :first-child { grid-row: auto; } }
.tbl-wrap { overflow-x: auto; margin-top: 12px; }
table.board { width: 100%; border-collapse: collapse; font-size: 13.5px; min-width: 620px; }
table.board th { text-align: end; font-size: 11.5px; font-weight: 600; color: var(--muted); padding: 8px; border-bottom: 1px solid var(--line); white-space: nowrap; }
table.board th:first-child, table.board td:first-child { text-align: start; }
table.board td { padding: 9px 8px; border-bottom: 1px solid var(--line); text-align: end; font-family: var(--mono); font-size: 12.5px; font-variant-numeric: tabular-nums; }
table.board td:first-child { font-family: var(--ui); font-size: 13.5px; font-weight: 500; }
table.board tr.best td { background: var(--accent-soft); }
table.board tr.best td:first-child::after { content: "best"; margin-inline-start: 8px; font: 600 10px var(--mono); color: var(--accent-ink); background: var(--accent); padding: 1px 6px; border-radius: 999px; vertical-align: 1px; }
.kind { display: block; font: 400 11px var(--mono); color: var(--faint); }
.cov-ok { color: var(--good); } .cov-bad { color: var(--bad); }

.exp-grid, .diss-grid { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 16px; }
@media (max-width: 1000px) { .exp-grid, .diss-grid { grid-template-columns: 1fr; } }

.rh-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
@media (max-width: 1100px) { .rh-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .rh-grid { grid-template-columns: 1fr; } }
.rh { padding: 16px; display: grid; gap: 8px; align-content: start; }
.rh .tag { display: inline-flex; align-items: center; gap: 7px; font: 500 12px var(--mono); color: var(--muted); }
.rh .tag i { width: 10px; height: 10px; border-radius: 50%; }
.rh h3 { font-size: 17px; }
.rh .chart { height: 130px; }
.rh .facts { display: flex; flex-wrap: wrap; gap: 6px; }
.rh .ex { font-size: 12.5px; color: var(--muted); }

.prose { display: grid; gap: 12px; font-size: 15px; }
.prose h3 { font-size: 17px; }
.prose .callout { padding: 12px 14px; border-radius: 12px; background: var(--accent-soft); border-inline-start: 3px solid var(--accent); }
table.mini { width: 100%; border-collapse: collapse; font-size: 13px; }
table.mini td, table.mini th { padding: 7px 6px; border-bottom: 1px solid var(--line); text-align: start; }
table.mini td.num, table.mini th.num { text-align: end; font-family: var(--mono); }

.pipe { list-style: none; margin: 0 0 16px; padding: 0; display: grid; grid-template-columns: repeat(6, 1fr); gap: 10px; counter-reset: s; }
@media (max-width: 1100px) { .pipe { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 560px) { .pipe { grid-template-columns: 1fr; } }
.pipe li { counter-increment: s; padding: 14px; border-radius: 14px; border: 1px solid var(--line); background: var(--surface); display: grid; gap: 6px; align-content: start; }
.pipe li::before { content: "0" counter(s); font: 500 11px var(--mono); color: var(--accent); }
.pipe b { font-size: 14.5px; } .pipe p { color: var(--muted); font-size: 13px; }
.m-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
@media (max-width: 1000px) { .m-grid { grid-template-columns: 1fr; } }
.m-grid ul { margin: 8px 0 0; padding-inline-start: 18px; color: var(--muted); font-size: 13.5px; display: grid; gap: 5px; }
.m-grid li b { color: var(--ink); font-weight: 600; }

.foot { padding-block: 48px 40px; color: var(--faint); font-size: 12.5px; display: grid; gap: 6px; border-top: 1px solid var(--line); margin-top: 64px; }
.loading { color: var(--muted); font-size: 14px; padding: 24px 0; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation-duration: .001s !important; transition: none !important; } }