:root {
  color-scheme: dark;
  --bg: oklch(17% 0.025 238);
  --panel: oklch(24% 0.025 238);
  --panel-strong: oklch(31% 0.04 238);
  --text: oklch(96% 0.01 96);
  --muted: oklch(76% 0.025 230);
  --red: oklch(62% 0.21 29);
  --blue: oklch(68% 0.14 235);
  --gold: oklch(84% 0.16 84);
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  min-height: 100%;
  display: grid;
  place-items: center;
  overflow: hidden;
  background: linear-gradient(180deg, oklch(24% 0.04 238), oklch(12% 0.035 230) 74%);
  color: var(--text);
  font-family: "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
}

.game-shell {
  width: min(100vw, 1260px);
  min-height: 100dvh;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  gap: 10px;
  padding: 12px;
}

.scoreboard {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 150px minmax(0, 1fr);
  gap: 10px;
  align-items: stretch;
}

.driver-card,
.race-status {
  min-width: 0;
  padding: 10px 12px;
  border: 1px solid oklch(100% 0 0 / 0.12);
  border-radius: 8px;
  background: color-mix(in oklch, var(--panel) 92%, black);
  box-shadow: 0 12px 28px oklch(0% 0 0 / 0.28);
}

.driver-card--red {
  border-color: color-mix(in oklch, var(--red) 58%, white 8%);
  box-shadow: inset 0 3px 0 color-mix(in oklch, var(--red) 72%, transparent), 0 12px 28px oklch(0% 0 0 / 0.28);
}

.driver-card--blue {
  border-color: color-mix(in oklch, var(--blue) 58%, white 8%);
  box-shadow: inset 0 3px 0 color-mix(in oklch, var(--blue) 72%, transparent), 0 12px 28px oklch(0% 0 0 / 0.28);
}

.driver-card span,
.race-status span {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.driver-card strong,
.race-status strong {
  display: block;
  margin-top: 2px;
  font-size: 23px;
  line-height: 1.1;
  white-space: nowrap;
}

.driver-card small,
.race-status small {
  display: block;
  margin-top: 5px;
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.race-status {
  text-align: center;
  background: color-mix(in oklch, var(--panel-strong) 88%, black);
}

.nitro-meter {
  height: 7px;
  margin-top: 8px;
  border-radius: 999px;
  overflow: hidden;
  background: oklch(12% 0.02 238);
}

.nitro-meter span {
  width: 100%;
  height: 100%;
  display: block;
  background: linear-gradient(90deg, var(--blue), var(--gold));
  transform-origin: left center;
  transform: scaleX(1);
}

.race-windows {
  min-height: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.race-window {
  position: relative;
  min-width: 0;
  min-height: 0;
  border: 2px solid oklch(100% 0 0 / 0.14);
  border-radius: 8px;
  overflow: hidden;
  background: #29323b;
  box-shadow: 0 20px 60px oklch(0% 0 0 / 0.42);
}

.race-window--red {
  border-color: color-mix(in oklch, var(--red) 54%, white 10%);
}

.race-window--blue {
  border-color: color-mix(in oklch, var(--blue) 54%, white 10%);
}

.window-label {
  position: absolute;
  z-index: 2;
  top: 10px;
  left: 10px;
  padding: 6px 9px;
  border-radius: 8px;
  background: oklch(10% 0.02 238 / 0.68);
  color: var(--text);
  font-size: 12px;
  font-weight: 700;
  pointer-events: none;
}

canvas {
  width: 100%;
  height: 100%;
  min-height: 430px;
  display: block;
  touch-action: none;
}

.mobile-controls {
  display: none;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  padding-bottom: max(2px, env(safe-area-inset-bottom));
}

.mobile-controls div {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
  padding: 8px;
  border-radius: 8px;
  background: oklch(20% 0.024 238);
}

.mobile-controls span,
.mobile-controls button:last-child {
  grid-column: 1 / -1;
}

.mobile-controls span {
  color: var(--muted);
  font-size: 12px;
}

.mobile-controls button {
  height: 42px;
  border: 0;
  border-radius: 8px;
  background: var(--panel-strong);
  color: var(--text);
  font: inherit;
  font-weight: 700;
  box-shadow: inset 0 -2px 0 oklch(0% 0 0 / 0.28);
  user-select: none;
}

.mobile-controls button:last-child {
  background: color-mix(in oklch, var(--gold) 74%, var(--panel-strong));
  color: oklch(14% 0.025 238);
}

.mobile-controls button:active {
  transform: translateY(1px);
  background: color-mix(in oklch, var(--panel-strong) 82%, white);
}

.results {
  width: min(92vw, 520px);
  border: 1px solid oklch(100% 0 0 / 0.16);
  border-radius: 8px;
  padding: 0;
  color: var(--text);
  background: oklch(18% 0.026 238);
  box-shadow: 0 28px 80px oklch(0% 0 0 / 0.55);
}

.results::backdrop {
  background: oklch(0% 0 0 / 0.62);
}

.results form {
  padding: 24px;
}

.results span {
  color: var(--muted);
  font-size: 13px;
}

.results h2 {
  margin: 6px 0 18px;
  font-size: 32px;
  line-height: 1.1;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.result-grid div {
  padding: 12px;
  border-radius: 8px;
  background: oklch(24% 0.026 238);
}

.result-grid strong {
  display: block;
  margin-top: 4px;
  font-size: 22px;
}

.results button {
  width: 100%;
  height: 46px;
  margin-top: 18px;
  border: 0;
  border-radius: 8px;
  background: var(--gold);
  color: oklch(14% 0.025 238);
  font: inherit;
  font-weight: 800;
}

@media (max-width: 860px) {
  body {
    overflow: auto;
  }

  .scoreboard {
    grid-template-columns: 1fr 82px 1fr;
  }

  .driver-card,
  .race-status {
    padding: 8px;
  }

  .driver-card strong,
  .race-status strong {
    font-size: 17px;
  }

  .driver-card small,
  .race-status small {
    display: none;
  }

  .race-windows {
    grid-template-columns: 1fr;
  }

  canvas {
    height: 34dvh;
    min-height: 260px;
  }

  .mobile-controls {
    display: grid;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}