@import url('https://fonts.googleapis.com/css2?family=Barlow+Condensed:wght@500;600;700;800&family=Inter:wght@400;500;600;700&display=swap');

:root { color-scheme: dark; --ink: #f4f1e9; --muted: #9ca8a4; --amber: #f7b955; --panel: rgba(13,25,27,.94); --line: rgba(255,255,255,.13); }
* { box-sizing: border-box; }
html, body, #atlas { width: 100%; height: 100%; margin: 0; overflow: hidden; }
body { background: #667860; color: var(--ink); font-family: Inter, sans-serif; -webkit-font-smoothing: antialiased; }
button, input { color: inherit; font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button:focus-visible, a:focus-visible, input:focus-visible { outline: 2px solid var(--amber); outline-offset: 2px; }
#atlas { position: relative; isolation: isolate; }
#map { position: absolute; inset: 0; width: 100%; height: 100%; cursor: grab; }
#map.dragging { cursor: grabbing; }
#atlas::after { content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none; background: radial-gradient(circle at 58% 42%, transparent 45%, rgba(5,15,16,.18)); }
.topbar { position: absolute; z-index: 5; top: 0; left: 0; right: 0; height: 72px; display: flex; align-items: center; gap: 30px; padding: 0 25px 0 27px; border-bottom: 1px solid var(--line); background: rgba(10,21,23,.96); }
.brand { display: flex; align-items: center; min-width: 268px; font: 800 17px "Barlow Condensed"; letter-spacing: .14em; }
.brand i { width: 24px; height: 4px; margin-right: 10px; background: var(--amber); box-shadow: 7px -5px 0 -1px var(--amber); }
.brand small { margin-left: 10px; color: var(--amber); font-size: 10px; }
.map-readout { display: flex; flex: 1; gap: 18px; align-items: baseline; }
.map-readout strong { font: 700 16px "Barlow Condensed"; letter-spacing: .08em; }
.map-readout span { color: var(--muted); font: 600 10px Inter; letter-spacing: .12em; }
.flight-link { padding: 12px 15px; border: 1px solid rgba(247,185,85,.46); color: var(--amber); text-decoration: none; font: 700 11px Inter; letter-spacing: .12em; }
.flight-link b { margin-left: 9px; font-size: 15px; }
.workbench-toggle { display: none; width: 38px; height: 38px; border: 1px solid var(--line); background: rgba(255,255,255,.04); color: var(--amber); cursor: pointer; }
.workbench { position: absolute; z-index: 4; top: 72px; bottom: 0; left: 0; width: 326px; padding: 24px 24px 34px; overflow: auto; border-right: 1px solid var(--line); background: var(--panel); }
.eyebrow, .section-head { color: var(--amber); font: 700 10px Inter; letter-spacing: .16em; }
h1 { margin: 9px 0 8px; font: 700 33px/1 "Barlow Condensed"; letter-spacing: .01em; }
.intro { margin: 0; color: #9aaba7; font-size: 11px; line-height: 1.55; }
.workbench section { margin-top: 25px; padding-top: 19px; border-top: 1px solid var(--line); }
.section-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 15px; color: #d7dfda; }
.section-head small { color: #71807d; font-size: 8px; }
.seed-field { display: grid; grid-template-columns: 38px 1fr 34px; align-items: center; height: 39px; margin-bottom: 16px; border: 1px solid var(--line); background: rgba(255,255,255,.035); }
.seed-field span { padding-left: 10px; color: #82918e; font: 600 9px Inter; text-transform: uppercase; }
.seed-field input { min-width: 0; border: 0; outline: 0; background: transparent; font: 600 12px Inter; }
.seed-field button { align-self: stretch; border: 0; border-left: 1px solid var(--line); background: transparent; cursor: pointer; color: var(--amber); font-size: 18px; }
.parameter { margin-top: 13px; }
.parameter label { display: flex; justify-content: space-between; margin-bottom: 7px; color: #a8b4b1; font: 500 10px Inter; }
.parameter output { color: var(--amber); font-weight: 700; }
.parameter input[type="range"] { width: 100%; height: 3px; margin: 0; appearance: none; background: #354244; accent-color: var(--amber); cursor: pointer; }
.parameter input[type="range"]::-webkit-slider-thumb { width: 13px; height: 13px; appearance: none; border: 2px solid #192426; border-radius: 50%; background: var(--amber); box-shadow: 0 0 0 1px var(--amber); }
.parameter.compact { margin-top: 18px; }
.apply { width: 100%; margin-top: 19px; padding: 12px; border: 1px solid rgba(247,185,85,.42); background: rgba(247,185,85,.08); color: var(--amber); cursor: pointer; font: 700 10px Inter; letter-spacing: .12em; }
.apply.dirty { background: var(--amber); color: #152022; }
.layers { display: grid; grid-template-columns: 1fr 1fr; gap: 7px 11px; }
.layers label { display: flex; gap: 7px; align-items: center; color: #9faeaa; cursor: pointer; font-size: 9px; }
.layers input { position: absolute; opacity: 0; }
.layers i { width: 12px; height: 12px; border: 1px solid #60706c; }
.layers input:checked + i { border-color: var(--amber); background: var(--amber); box-shadow: inset 0 0 0 3px #172325; }
.legend { display: grid; grid-template-columns: 1fr 1fr; gap: 9px 12px; color: #8e9b98; font-size: 8px; }
.legend .section-head { grid-column: 1 / -1; margin-bottom: 4px; }
.legend > div:not(.section-head) { display: flex; align-items: center; gap: 8px; }
.line { width: 25px; height: 0; border-top-style: solid; }
.line.primary { border-width: 3px; border-color: #eee2c5; }
.line.regional { border-width: 2px; border-color: #d0c4a8; }
.line.local { border-width: 1px; border-color: #f1b75d; }
.line.river { border-width: 3px; border-color: #71b7c7; }
.swatch { width: 14px; height: 9px; }
.swatch.farm { background: #ba9654; }.swatch.industry { background: #97796d; }
.swatch.bridge { border: 2px solid #f7b955; background: #162426; }
.swatch.floodplain { background: rgba(86,142,145,.75); }
.inspector { position: absolute; z-index: 4; right: 22px; bottom: 22px; width: 278px; min-height: 106px; padding: 16px 18px; border: 1px solid var(--line); border-left: 3px solid var(--amber); background: rgba(12,24,26,.96); }
.inspector small { display: block; margin-bottom: 7px; color: var(--amber); font: 700 8px Inter; letter-spacing: .16em; }
.inspector strong { display: block; font: 700 20px "Barlow Condensed"; }
.inspector p { margin: 6px 0 0; color: #94a39f; font-size: 9px; line-height: 1.5; }
.north { position: absolute; z-index: 3; top: 94px; right: 29px; display: grid; place-items: center; color: white; text-shadow: 0 1px 3px #000; font: 800 12px Inter; }
.north i { width: 1px; height: 39px; margin-top: 6px; background: linear-gradient(#fff, transparent); }
.render-status { position: absolute; z-index: 6; left: 50%; bottom: 26px; padding: 9px 13px; background: rgba(12,24,26,.83); color: var(--amber); font: 700 9px Inter; letter-spacing: .14em; transform: translateX(-50%); transition: opacity .2s; }
.render-status.ready { opacity: 0; }

@media (max-width: 760px) {
  .topbar { height: 58px; padding: 0 12px; gap: 8px; }.brand { min-width: 0; flex: 1; }.brand small, .map-readout { display: none; }.flight-link { padding: 10px; font-size: 9px; }
  .workbench-toggle { display: grid; place-items: center; flex: 0 0 auto; }
  .workbench { top: 58px; width: min(326px, calc(100vw - 38px)); padding: 18px; transform: translateX(-100%); transition: transform .25s; box-shadow: 20px 0 50px rgba(0,0,0,.28); }
  .workbench.open { transform: translateX(0); }
  .inspector { right: 10px; bottom: 10px; width: 230px; }.north { top: 75px; right: 18px; }
}