:root {
  color-scheme: light;
  --game-background: hsl(43 19% 93%);
  --game-foreground: hsl(220 16% 16%);
  --game-card: hsl(40 28% 98%);
  --game-secondary: hsl(42 18% 89%);
  --game-muted: hsl(220 7% 42%);
  --game-accent: hsl(204 28% 88%);
  --game-accent-foreground: hsl(202 37% 25%);
  --game-border: hsl(39 13% 80%);
  --game-story: hsl(18 48% 54%);
  --game-font: var(--font-serif);
}

:root[data-mode="dark"] {
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  min-height: 100%;
  min-width: 0;
  margin: 0;
}

body {
  overflow: hidden;
  color: var(--game-foreground);
  background: transparent;
  font-family: var(--game-font);
  font-size: 14px;
  line-height: 1.6;
}

button {
  color: inherit;
  font: inherit;
}

button:focus-visible {
  outline: 2px solid var(--game-accent-foreground);
  outline-offset: 3px;
}

.runner-shell {
  display: flex;
  flex-direction: column;
  width: 100%;
  min-height: 100dvh;
  padding: 10px;
  border: 1px solid color-mix(in srgb, var(--game-border), transparent 8%);
  border-radius: 8px;
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--game-card), transparent 4%), color-mix(in srgb, var(--game-accent), transparent 64%));
}

.runner-meta {
  margin-bottom: 8px;
}

.runner-meta p {
  margin: 0;
  font-size: clamp(14px, 5vw, 16px);
  line-height: 1.5;
  text-wrap: pretty;
}

.score-line {
  position: absolute;
  z-index: 2;
  top: 7px;
  right: 7px;
  display: flex;
  align-items: baseline;
  margin: 0;
  padding: 3px 6px;
  gap: 4px;
  border: 1px solid color-mix(in srgb, var(--game-border), transparent 22%);
  border-radius: 999px;
  color: var(--game-muted);
  background: color-mix(in srgb, var(--game-card), transparent 10%);
  font-size: clamp(12px, 4.6vw, 14px);
  line-height: 1.2;
  pointer-events: none;
}

.score-line output {
  color: var(--game-foreground);
  font-variant-numeric: tabular-nums;
}

.game-stage {
  position: relative;
  width: 100%;
  height: clamp(166px, min(78vw, 42dvh), 202px);
  flex: 0 0 auto;
  overflow: hidden;
  border: 1px solid var(--game-border);
  border-radius: 6px;
  background: var(--game-card);
  cursor: pointer;
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: manipulation;
}

canvas:focus-visible {
  outline: 2px solid var(--game-accent-foreground);
  outline-offset: -3px;
}

.game-overlay {
  position: absolute;
  inset: 0;
  display: grid;
  padding: 18px;
  place-items: center;
  color: var(--game-foreground);
  background: color-mix(in srgb, var(--game-card), transparent 22%);
  text-align: center;
  pointer-events: none;
}

.game-overlay strong {
  max-width: 15ch;
  padding: 7px 9px;
  border: 1px solid color-mix(in srgb, var(--game-border), transparent 24%);
  border-radius: 6px;
  background: color-mix(in srgb, var(--game-card), transparent 8%);
  font-size: clamp(15px, 6vw, 18px);
  font-weight: 600;
  text-wrap: balance;
}

[hidden] {
  display: none !important;
}

#gameAction {
  width: 100%;
  min-height: 46px;
  margin-top: 8px;
  padding: 8px 14px;
  border: 1px solid var(--game-border);
  border-radius: 6px;
  color: var(--game-accent-foreground);
  background: var(--game-accent);
  font-size: clamp(15px, 6vw, 17px);
  font-weight: 600;
  transition: transform 110ms ease, filter 150ms ease;
}

#gameAction:hover {
  filter: brightness(1.035);
}

#gameAction:active {
  transform: translateY(1px);
}

.license-note {
  margin: auto 0 0;
  padding-top: 8px;
  color: var(--game-muted);
  font-size: clamp(12px, 4vw, 13px);
  line-height: 1.5;
  text-wrap: pretty;
}

@media (max-width: 210px) {
  .runner-shell {
    padding: 8px;
  }

  .runner-meta {
    margin-bottom: 6px;
  }

  .score-line span {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }

  #gameAction {
    min-height: 44px;
  }
}

@media (prefers-reduced-motion: reduce) {
  #gameAction {
    transition: none;
  }
}