:root {
  --bg: #e8ebee;
  --panel: #ffffff;
  --ink: #16191d;
  --muted: #5d6670;
  --line: #d3d8dd;
  --red: #e31937;
  --red-ink: #b8102a;
  --ok: #1e7f4f;
  --warn: #9a5800;
  --bad: #c2261f;
  --num: "DIN Alternate", "DIN Condensed", Bahnschrift, "Barlow", "Roboto Condensed", sans-serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15181c; --panel: #1e2227; --ink: #e9ecef; --muted: #98a2ad; --line: #323840;
    --red: #ff3b52; --red-ink: #ff6d7f; --ok: #4cc38a; --warn: #e3a447; --bad: #ff6b61;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 15px/1.65 var(--sans); }
a { color: var(--red-ink); text-underline-offset: 2px; }
code, pre { font-family: var(--mono); font-size: 13px; }
code { word-break: break-all; }
:focus-visible { outline: 2px solid var(--red); outline-offset: 2px; }

/* top bar */
.top {
  display: flex; align-items: center; gap: 24px; flex-wrap: wrap;
  padding: 12px max(16px, calc((100vw - 880px) / 2));
  background: var(--panel); border-bottom: 1px solid var(--line);
}
.brand { font-weight: 700; color: var(--ink); text-decoration: none; letter-spacing: .02em; }
.brand span { font-weight: 400; color: var(--muted); margin-left: 4px; }
.top nav { display: flex; gap: 18px; flex: 1; }
.top nav a { color: var(--muted); text-decoration: none; }
.top nav a:hover { color: var(--ink); }
.who { display: flex; align-items: center; gap: 12px; color: var(--muted); font-size: 14px; }
.who form { margin: 0; }

main { max-width: 880px; margin: 0 auto; padding: 32px 16px 48px; }
footer { max-width: 880px; margin: 0 auto; padding: 0 16px 32px; color: var(--muted); font-size: 12px; }

h1 { font-size: 26px; line-height: 1.3; margin: 0 0 6px; font-weight: 700; }
h2 { font-size: 17px; margin: 0; font-weight: 600; }
.intro { margin-bottom: 24px; }
.intro p { color: var(--muted); margin: 0; }
.hint { color: var(--muted); font-size: 14px; }

/* buttons */
.btn {
  display: inline-block; border: 1px solid var(--red); background: var(--red); color: #fff;
  padding: 8px 18px; border-radius: 6px; font: inherit; font-weight: 600; cursor: pointer; text-decoration: none;
}
.btn:hover { background: var(--red-ink); border-color: var(--red-ink); }
.btn.ghost { background: transparent; color: var(--ink); border-color: var(--line); font-weight: 500; }
.btn.ghost:hover { border-color: var(--ink); }
.btn.small { padding: 4px 12px; font-size: 14px; }
.link { background: none; border: 0; padding: 0; color: var(--muted); font: inherit; cursor: pointer; text-decoration: underline; }

input {
  font: inherit; color: var(--ink); background: var(--panel); border: 1px solid var(--line);
  border-radius: 6px; padding: 8px 12px; min-width: 0;
}

.flash { padding: 12px 16px; border-radius: 6px; margin-bottom: 24px; border-left: 4px solid; background: var(--panel); word-break: break-word; }
.flash.ok { border-color: var(--ok); }
.flash.bad { border-color: var(--bad); }

/* progress rail */
.rail { display: grid; grid-template-columns: repeat(4, 1fr); gap: 4px; margin-top: 18px; }
.rail span { height: 4px; border-radius: 2px; background: var(--line); }
.rail span.on { background: var(--ok); }

/* steps: a real sequence, so numbered */
.steps { list-style: none; padding: 0; margin: 0; background: var(--panel); border: 1px solid var(--line); border-radius: 10px; }
.step { display: grid; grid-template-columns: 36px 1fr; gap: 16px; padding: 20px; border-top: 1px solid var(--line); }
.step:first-child { border-top: 0; }
.num {
  width: 32px; height: 32px; border-radius: 50%; display: grid; place-items: center;
  font: 600 16px/1 var(--num); border: 1.5px solid var(--line); color: var(--muted);
}
.step.done .num { background: var(--ok); border-color: var(--ok); color: #fff; }
.step.todo .num, .step.fail .num { border-color: var(--red); color: var(--red); }
.step.wait { opacity: .62; }
.head { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; min-height: 32px; }
.detail { margin: 4px 0 0; color: var(--muted); overflow-wrap: anywhere; }
.step .btn, .step form { margin-top: 12px; }
.inline { display: flex; gap: 8px; flex-wrap: wrap; }

.pill { font-size: 12px; padding: 1px 8px; border-radius: 10px; border: 1px solid currentColor; white-space: nowrap; }
.pill.done { color: var(--ok); }
.pill.todo { color: var(--red-ink); }
.pill.fail { color: var(--bad); }
.pill.wait { color: var(--muted); }

pre { background: var(--bg); border: 1px solid var(--line); border-radius: 6px; padding: 12px; overflow: auto; max-height: 480px; margin: 12px 0 0; }
pre.err { border-color: var(--bad); }

.pair { display: flex; gap: 20px; align-items: center; margin-top: 12px; flex-wrap: wrap; }
.pair p { margin: 0 0 4px; }
.qr { width: 132px; height: 132px; padding: 10px; background: #fff; border-radius: 8px; border: 1px solid var(--line); }
.qr svg { width: 100%; height: 100%; display: block; }
.qr svg path[stroke] { stroke: #16191d; }

.next { margin-top: 20px; }

.config { margin-top: 28px; }
.config summary { cursor: pointer; color: var(--muted); }
.config dl { display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px; margin: 12px 0 0; font-size: 14px; }
.config dt { color: var(--muted); }
.config dd { margin: 0; min-width: 0; }

/* vehicles */
.cars { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.cars a { display: block; padding: 18px 20px; background: var(--panel); border: 1px solid var(--line); border-radius: 10px; color: var(--ink); text-decoration: none; }
.cars a:hover { border-color: var(--ink); }
.name { font-size: 18px; font-weight: 600; }
.vin { font: 14px/1.4 var(--num); letter-spacing: .08em; color: var(--muted); margin: 2px 0 0; }
.tags { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 10px; }

.empty { background: var(--panel); border: 1px dashed var(--line); border-radius: 10px; padding: 20px; margin-bottom: 24px; }
.empty p { margin: 0 0 12px; }

.car-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 16px; flex-wrap: wrap; }
.car-head .tags { margin: 0; }

/* the battery is the one loud element on the page */
.battery { margin: 8px 0 28px; }
.pct { font: 600 88px/1 var(--num); letter-spacing: -.02em; }
.pct span { font-size: inherit; }
.bar { position: relative; height: 22px; border-radius: 4px; background: var(--panel); border: 1px solid var(--line); margin: 14px 0 8px; overflow: hidden; }
.fill { height: 100%; background: var(--ok); }
.fill.charging { background: repeating-linear-gradient(-45deg, var(--ok) 0 10px, color-mix(in srgb, var(--ok) 80%, #fff) 10px 20px); background-size: 28px 28px; animation: flow 1.2s linear infinite; }
@keyframes flow { to { background-position: 28px 0; } }
.limit { position: absolute; top: -1px; bottom: -1px; width: 2px; background: var(--ink); }
.range { color: var(--muted); font-family: var(--num), var(--sans); font-size: 16px; }

.stats { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; margin: 0 0 28px; }
.stats div { background: var(--panel); padding: 14px 16px; }
.stats dt { color: var(--muted); font-size: 13px; }
.stats dd { margin: 2px 0 0; font: 500 18px/1.4 var(--num), var(--sans); word-break: break-word; }

.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 20px; }
.panel .hint { margin: 8px 0 0; }
.cmds { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.cmds form { margin: 0; }

/* explorer */
.explorer { display: flex; gap: 8px; }
.explorer input { flex: 1; font-family: var(--mono); }
.examples { display: flex; gap: 14px; flex-wrap: wrap; font: 13px var(--mono); margin: 10px 0 0; }
.errbox { border: 1px solid var(--bad); border-radius: 10px; padding: 16px; background: var(--panel); margin-top: 16px; }
.errbox p { margin: 0; }

@media (max-width: 600px) {
  .top { gap: 10px 16px; }
  .top nav { order: 3; flex-basis: 100%; }
  .pct { font-size: 64px; }
  .step { grid-template-columns: 1fr; gap: 8px; padding: 16px; }
}
@media (prefers-reduced-motion: reduce) { .fill.charging { animation: none; } }