:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #10220d;
}

* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html,
body {
  width: 100%;
  min-height: 100%;
  margin: 0;
  overflow: hidden;
  overscroll-behavior: none;
}

body {
  min-height: 100vh;
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: max(0px, env(safe-area-inset-top)) max(0px, env(safe-area-inset-right)) max(0px, env(safe-area-inset-bottom)) max(0px, env(safe-area-inset-left));
  background: radial-gradient(circle at center, #285d1b 0%, #10220d 70%);
  touch-action: none;
}

.game-shell {
  position: relative;
  width: min(100vw, calc(100dvh * 16 / 9), 1280px);
  height: min(calc(100vw * 9 / 16), 100dvh, 720px);
  aspect-ratio: 16 / 9;
  display: grid;
  place-items: center;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
  border-radius: clamp(0px, 2vmin, 18px);
  overflow: hidden;
  background: #1d3317;
}

@supports not (height: 100dvh) {
  .game-shell {
    width: min(100vw, calc(100vh * 16 / 9), 1280px);
    height: min(calc(100vw * 9 / 16), 100vh, 720px);
  }
}

canvas {
  width: 100%;
  height: 100%;
  display: block;
  image-rendering: auto;
  background: #2f6d1d;
  touch-action: none;
  -webkit-user-select: none;
  user-select: none;
}

.touch-controls {
  position: absolute;
  inset: 0;
  z-index: 5;
  display: none;
  align-items: flex-end;
  justify-content: space-between;
  padding: clamp(10px, 3vmin, 28px);
  padding-bottom: max(clamp(10px, 3vmin, 28px), env(safe-area-inset-bottom));
  pointer-events: none;
}

.touch-control-group {
  display: flex;
  align-items: center;
  gap: clamp(10px, 2.2vmin, 22px);
  pointer-events: none;
}

.touch-control-group--speed {
  align-items: flex-end;
}

.touch-button {
  pointer-events: auto;
  width: clamp(58px, 8.5vmin, 90px);
  height: clamp(58px, 8.5vmin, 90px);
  border: 3px solid rgba(255, 255, 255, 0.85);
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.68);
  color: #ffffff;
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.38), inset 0 0 18px rgba(255, 255, 255, 0.14);
  font: 900 clamp(22px, 4vmin, 38px) Inter, ui-sans-serif, system-ui, sans-serif;
  line-height: 1;
  -webkit-user-select: none;
  user-select: none;
  touch-action: none;
}

.touch-control-group--steering .touch-button {
  position: relative;
  width: clamp(96px, 14vmin, 150px);
  height: clamp(96px, 14vmin, 150px);
  font-size: 0;
  border-width: 4px;
}

.touch-control-group--steering .touch-button::before,
.touch-control-group--steering .touch-button::after {
  content: "";
  position: absolute;
  top: 50%;
  background: #ffffff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.28);
}

.touch-control-group--steering .touch-button::before {
  left: 28%;
  width: 44%;
  height: 8px;
  border-radius: 999px;
  transform: translateY(-50%);
}

.touch-control-group--steering .touch-button::after {
  width: 24%;
  height: 24%;
  background: transparent;
  border-color: #ffffff;
  border-style: solid;
  border-width: 0 0 8px 8px;
}

.touch-button--steer-left::after {
  left: 27%;
  transform: translateY(-50%) rotate(45deg);
}

.touch-button--steer-right::after {
  right: 27%;
  transform: translateY(-50%) rotate(225deg);
}

.touch-control-group--steering {
  gap: clamp(16px, 3.5vmin, 36px);
}

.touch-button--brake,
.touch-button--accelerate {
  width: clamp(72px, 11vmin, 112px);
  height: clamp(58px, 8.5vmin, 90px);
  border-radius: clamp(18px, 3vmin, 28px);
  font-size: clamp(13px, 2.3vmin, 20px);
  letter-spacing: 0.04em;
}

.touch-button--accelerate {
  background: rgba(22, 163, 74, 0.74);
}

.touch-button--brake {
  background: rgba(185, 28, 28, 0.72);
}

.touch-button:active {
  transform: scale(0.94);
  filter: brightness(1.2);
}

@media (hover: none), (pointer: coarse), (max-width: 900px) {
  :root[data-game-scene="play"] .touch-controls {
    display: flex;
  }
}

@media (max-width: 760px) {
  .touch-controls {
    align-items: flex-end;
    padding: 8px 12px max(6px, env(safe-area-inset-bottom));
  }

  .touch-control-group {
    flex-direction: column;
    gap: 10px;
  }

  .touch-control-group--steering {
    gap: 10px;
  }

  .touch-control-group--steering .touch-button {
    width: clamp(54px, 10vmin, 72px);
    height: clamp(54px, 10vmin, 72px);
    border-width: 3px;
  }

  .touch-control-group--steering .touch-button::before {
    height: 6px;
  }

  .touch-control-group--steering .touch-button::after {
    border-width: 0 0 6px 6px;
  }

  .touch-button--brake,
  .touch-button--accelerate {
    width: clamp(68px, 12vmin, 92px);
    height: clamp(68px, 12vmin, 92px);
    border-radius: 18px;
    font-size: clamp(12px, 2.2vmin, 16px);
    letter-spacing: 0;
  }
}

@media (max-width: 820px) and (orientation: portrait) {
  body {
    padding: 0;
  }

  .game-shell {
    width: 100dvh;
    height: 100dvw;
    max-width: none;
    max-height: none;
    transform: rotate(90deg);
    transform-origin: center center;
    border-radius: 0;
  }

  .game-shell::before {
    content: none;
  }
}

@supports not (height: 100dvh) {
  @media (max-width: 820px) and (orientation: portrait) {
    .game-shell {
      width: 100vh;
      height: 100vw;
    }
  }
}