:root {
  color-scheme: light dark;
  --bg: #eceee9;
  --card: #ffffff;
  --ink: #131715;
  --ink-2: #4a5350;
  --ink-3: #69726f;
  --line: #dde1da;
  --mine: #e3f1ea;
  --accent: #0a6b4e;
  --live: #1a9a63;
  --warn: #b97800;
  --warn-bg: #fff1cf;
  --warn-ink: #5c4000;

  /* The toll sign keeps its own colours in both themes, like the real one. */
  --sign: #0b6148;
  --sign-ink: #ffffff;
  --sign-ink-2: #cfe6dc;
  --led-bg: #0b0d0c;
  --led: #ffb627;
  --led-ink: #e4e7e3;
  --led-ink-2: #9ba29e;
  --led-grid: #262b28;
  --trend: #c98500;  /* validated against --led-bg */
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0d0c;
    --card: #151918;
    --ink: #eef1ee;
    --ink-2: #b6beba;
    --ink-3: #8a938f;
    --line: #262c2a;
    --mine: #15291f;
    --accent: #4fc79a;
    --live: #35c184;
    --warn: #e0a02a;
    --warn-bg: #33270a;
    --warn-ink: #ffdc94;
    --sign: #0a5a43;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.4 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

h1, h2, p { margin: 0; }

[hidden] { display: none !important; }

/* ---- header ---- */

.top {
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: 1040px;
  margin: 0 auto;
  padding: 16px 16px 6px;
}

.shield { flex: none; }

.top h1 { font-size: 1.25rem; line-height: 1.2; letter-spacing: -0.01em; }

.status {
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--ink-2);
  font-size: 0.875rem;
}

.status::before {
  content: "";
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ink-3);
}

.status[data-kind="live"]::before { background: var(--live); }
.status[data-kind="stale"]::before { background: var(--warn); }

.refresh {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  margin-left: auto;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--card);
  color: var(--ink);
  cursor: pointer;
}

.refresh:active { transform: scale(0.96); }
.refresh.busy svg { animation: spin 0.8s linear infinite; }

@keyframes spin { to { transform: rotate(360deg); } }

@media (prefers-reduced-motion: reduce) {
  .refresh.busy svg { animation: none; opacity: 0.5; }
}

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ---- layout ---- */

main {
  display: grid;
  gap: 16px;
  max-width: 1040px;
  margin: 0 auto;
  padding: 10px 16px 32px;
}

.commutes, .boards { display: grid; gap: 16px; align-items: start; }

@media (min-width: 820px) {
  .commutes, .boards { grid-template-columns: 1fr 1fr; }
}

.notice {
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--card);
  font-size: 0.9375rem;
}

.notice[data-kind="warn"] { border-color: transparent; background: var(--warn-bg); color: var(--warn-ink); }

/* ---- the sign: one drive ---- */

.sign {
  min-width: 0;
  padding: 5px;
  border-radius: 18px;
  background: var(--sign);
  color: var(--sign-ink);
}

.sign-inner > * { min-width: 0; }

.sign-inner {
  display: grid;
  gap: 12px;
  padding: 14px;
  border: 2px solid rgba(255, 255, 255, 0.92);
  border-radius: 14px;
}

.sign-dir {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: -8px;
  color: var(--sign-ink-2);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.sign-route { font-size: 1.1875rem; line-height: 1.25; letter-spacing: -0.005em; }
.sign-route > span { display: inline-block; }
.sign-route .to { color: var(--sign-ink-2); }

.led {
  padding: 14px 14px 10px;
  border-radius: 10px;
  background: var(--led-bg);
  color: var(--led-ink);
}

.hero {
  color: var(--led);
  font-size: clamp(3rem, 16vw, 4rem);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.02em;
}

.hero.long { font-size: 2.25rem; line-height: 1.1; }

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 2px 14px;
  margin-top: 8px;
  color: var(--led-ink-2);
  font-size: 0.875rem;
}

.hero-meta span { white-space: nowrap; }
.hero-meta .move { color: var(--led-ink); font-weight: 600; }
.hero-meta .move:empty { display: none; }

.trend-cap { margin-top: 12px; color: var(--led-ink-2); font-size: 0.75rem; }

.trend { position: relative; margin-top: 2px; border-radius: 4px; touch-action: pan-y; cursor: crosshair; }
.trend:focus-visible { outline-color: #fff; outline-offset: 3px; }
.trend svg { display: block; max-width: 100%; }
.trend .grid { stroke: var(--led-grid); stroke-width: 1; }
.trend .tick { fill: var(--led-ink-2); font-size: 10px; font-variant-numeric: tabular-nums; }
.trend .area { fill: var(--trend); opacity: 0.12; }
.trend .line { fill: none; stroke: var(--trend); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.trend .dot { fill: var(--trend); stroke: var(--led-bg); stroke-width: 2; }
.trend .cross { stroke: var(--led-ink-2); stroke-width: 1; }

.tip {
  position: absolute;
  top: -22px;
  padding: 3px 8px;
  border-radius: 6px;
  background: #2a302d;
  color: var(--led-ink-2);
  font-size: 0.75rem;
  white-space: nowrap;
  transform: translateX(-50%);
  pointer-events: none;
}

.tip b { color: #fff; font-weight: 700; }

.changes { margin-top: 6px; color: var(--led-ink-2); font-size: 0.8125rem; }
.changes summary { padding: 6px 0; cursor: pointer; }
.changes table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.changes th, .changes td { padding: 5px 0; border-top: 1px solid var(--led-grid); font-weight: 400; text-align: left; }
.changes td { color: var(--led-ink); text-align: right; }

.sign-cap {
  margin-bottom: -6px;
  color: var(--sign-ink-2);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.zones { display: grid; gap: 7px; margin: 0; padding: 0; list-style: none; }

.zone {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 1.0625rem;
  font-weight: 700;
}

.zone .name { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 8px; min-width: 0; }

.zone .price {
  flex: none;
  min-width: 5.4em;
  padding: 5px 10px;
  border-radius: 6px;
  background: var(--led-bg);
  color: var(--led);
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.zone.mine .price { box-shadow: 0 0 0 2px #fff; }

.tag {
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
}

.zone .tag { background: #fff; color: var(--sign); }

.sign-note { color: var(--sign-ink-2); font-size: 0.8125rem; line-height: 1.45; }

/* ---- every entry point ---- */

.board {
  min-width: 0;
  padding: 14px 14px 6px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--card);
}

.board h2 { display: flex; align-items: center; gap: 6px; margin-bottom: 6px; font-size: 1rem; }
.board h2 svg { color: var(--accent); }

.board table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }

.board th, .board td {
  padding: 10px 8px;
  border-top: 1px solid var(--line);
  font-size: 0.9375rem;
  text-align: right;
  vertical-align: top;
}

.board thead th {
  padding-top: 4px;
  padding-bottom: 8px;
  border-top: 0;
  color: var(--ink-3);
  font-size: 0.75rem;
  font-weight: 600;
  vertical-align: bottom;
}

.board .to-label { display: block; font-weight: 400; }
.board th:first-child { padding-left: 8px; text-align: left; }
.board tbody th { font-weight: 600; }
.board .name { white-space: nowrap; }
.board td.none { color: var(--ink-3); }
.board .sub { display: block; color: var(--ink-3); font-size: 0.6875rem; }

.board tr.mine > * { background: var(--mine); }
.board tr.mine > :first-child { border-radius: 8px 0 0 8px; }
.board tr.mine > :last-child { border-radius: 0 8px 8px 0; }
.board tr.mine > *, .board tr.mine + tr > * { border-top-color: transparent; }
.board .tag { display: inline-block; margin-left: 4px; background: var(--accent); color: var(--card); }

@media (max-width: 380px) {
  main { padding-left: 12px; padding-right: 12px; }
  .top { padding-left: 12px; padding-right: 12px; }
  .sign-inner { padding: 12px; }
  .led { padding: 12px 12px 8px; }
  .board { padding: 12px 8px 4px; }
  .board th, .board td { padding: 9px 5px; font-size: 0.875rem; }
  .board .tag { margin-left: 0; }
}

.foot { display: grid; gap: 4px; padding: 0 2px; color: var(--ink-3); font-size: 0.8125rem; }

/* ---- PIN page ---- */

.login-page { display: grid; min-height: 100vh; min-height: 100dvh; place-items: center; }

.login {
  display: grid;
  justify-items: center;
  gap: 14px;
  width: min(100%, 320px);
  padding: 24px 20px;
}

.login h1 { font-size: 1.375rem; }
.login form { display: grid; gap: 8px; width: 100%; margin-top: 6px; }
.login label { color: var(--ink-2); font-size: 0.875rem; font-weight: 600; }

.login input {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--card);
  color: var(--ink);
  font: inherit;
  font-size: 1.25rem;
  letter-spacing: 0.2em;
}

.login button {
  padding: 13px;
  border: 0;
  border-radius: 12px;
  background: var(--sign);
  color: #fff;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.login-error { min-height: 1.4em; color: #b3261e; font-size: 0.875rem; }

@media (prefers-color-scheme: dark) {
  .login-error { color: #ff8a80; }
}