/* Shared design tokens and base for the landing page and the application.
   Dark control-room world: ink ground, hairline wayfinding lines, state colours validated for dark
   surfaces (CVD-safe adjacent order: vide, saturée, faible, élevée, normale). */

@font-face {
  font-family: "Bricolage Grotesque";
  src: url(../fonts/bricolage-grotesque-latin-wght-normal.woff2) format("woff2");
  font-weight: 200 800;
  font-display: swap;
}
@font-face {
  font-family: "Hanken Grotesk";
  src: url(../fonts/hanken-grotesk-latin-wght-normal.woff2) format("woff2");
  font-weight: 100 900;
  font-display: swap;
}
@font-face {
  font-family: "Spline Sans Mono";
  src: url(../fonts/spline-sans-mono-latin-wght-normal.woff2) format("woff2");
  font-weight: 300 700;
  font-display: swap;
}

:root {
  color-scheme: dark;

  --ground: #070b14;
  --panel: #0c1322;
  --panel-2: #101a2e;
  --raise: #16233b;
  --line: #1b2a47;
  --line-2: #2a3d63;

  --text: #e8eefb;
  --text-2: #a8b5cf;
  --text-3: #8493b0;

  /* Station states. Order = legend order (validated adjacent pairs). */
  --empty: #e66767;
  --full: #9085e9;
  --low: #c98500;
  --high: #3987e5;
  --ok: #199e70;
  --oos: #6b7a90;
  --flow: #8db4ff;
  --warn: #e0a526;

  --display: "Bricolage Grotesque", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --ui: "Hanken Grotesk", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "Spline Sans Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;

  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --ease-in-out: cubic-bezier(0.77, 0, 0.175, 1);
  --radius: 14px;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--ground);
  color: var(--text);
  font-family: var(--ui);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  scrollbar-color: var(--line-2) transparent;
}
h1, h2, h3 { font-family: var(--display); text-wrap: balance; }
p { text-wrap: pretty; }
a { color: var(--flow); text-underline-offset: 3px; }
button { font: inherit; color: inherit; }
code { font-family: var(--mono); font-size: 0.92em; }
.num { font-family: var(--mono); font-variant-numeric: tabular-nums; }

::selection { background: rgba(141, 180, 255, 0.34); color: #fff; }
:focus-visible { outline: 2px solid var(--flow); outline-offset: 3px; border-radius: 6px; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: var(--line-2); border-radius: 8px; border: 2px solid var(--ground); }
::-webkit-scrollbar-track { background: transparent; }

.sr-only {
  position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* Buttons: light primary on the dark ground, quiet secondary. Press feedback on every one. */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 48px; padding: 0 22px; border-radius: 12px;
  font: 600 16px/1 var(--ui); text-decoration: none; cursor: pointer;
  border: 1px solid var(--line-2); background: var(--panel-2); color: var(--text);
  transition: transform 140ms var(--ease-out), background-color 160ms ease, border-color 160ms ease;
}
.btn.primary { background: var(--text); border-color: var(--text); color: #0a1020; }
.btn svg { width: 18px; height: 18px; flex: none; transition: transform 220ms var(--ease-out); }
.btn:active { transform: scale(0.97); }
@media (hover: hover) and (pointer: fine) {
  .btn:hover { border-color: var(--flow); }
  .btn.primary:hover { background: #fff; }
  .btn:hover svg { transform: translateX(3px); }
}

/* Live status dot, shared by both pages. */
.dot {
  position: relative; width: 10px; height: 10px; border-radius: 50%; background: var(--oos); flex: none;
}
.dot.live { background: var(--ok); }
.dot.delayed { background: var(--warn); }
.dot.stale { background: var(--empty); }
.dot.live::after {
  content: ""; position: absolute; inset: 0; border-radius: 50%; border: 2px solid var(--ok);
  opacity: 0; transform: scale(1);
}
.dot.live.beat::after { animation: beat 900ms var(--ease-out); }
@keyframes beat {
  0% { opacity: 0.8; transform: scale(1); }
  100% { opacity: 0; transform: scale(3); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; }
  .btn, .btn svg { transition: none; }
  .btn:active { transform: none; }
  .dot.live.beat::after { animation: none; }
}