:root {
  color-scheme: dark;
  --bg-color: #0d1117;
  --panel-color: #161b22;
  --accent-color: #ff4d4d;
  --text-color: #e6edf3;
  --muted-text: #9aa4b2;
  --track-color: #2a2f36;
}

* {
  box-sizing: border-box;
}

html, body {
  height: 100%;
  margin: 0;
  padding: 0;
  background: var(--bg-color);
  color: var(--text-color);
  font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

#game-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1.5rem 1rem 2rem;
  min-height: 100%;
}

#game-title {
  margin: 0 0 1rem;
  font-size: 1.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

#canvas-wrapper {
  position: relative;
  width: 900px;
  max-width: 100%;
  border: 2px solid #30363d;
  border-radius: 6px;
  overflow: hidden;
  background: var(--track-color);
}

#game-canvas {
  display: block;
  width: 100%;
  height: auto;
  background: var(--track-color);
}

.hud {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  pointer-events: none;
}

.hud-item {
  background: rgba(13, 17, 23, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  padding: 0.35rem 0.6rem;
  font-size: 0.9rem;
  font-variant-numeric: tabular-nums;
}

.overlay-screen {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  background: rgba(0, 0, 0, 0.75);
  text-align: center;
  padding: 1rem;
}

.overlay-screen.hidden {
  display: none;
}

.overlay-screen h2 {
  margin: 0;
  font-size: 2rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

#qualifying-failed-screen h2 {
  color: #f2c94c;
}

#race-over-screen h2 {
  color: var(--accent-color);
}

.overlay-screen p {
  margin: 0;
  color: var(--muted-text);
  max-width: 24rem;
}

.overlay-screen button {
  margin-top: 0.5rem;
  padding: 0.5rem 1.5rem;
  font-size: 1rem;
  color: var(--text-color);
  background: var(--panel-color);
  border: 1px solid #30363d;
  border-radius: 4px;
  cursor: pointer;
}

.overlay-screen button:hover {
  background: #21262d;
}

.overlay-screen button:focus-visible {
  outline: 2px solid var(--accent-color);
  outline-offset: 2px;
}

#controls-help {
  margin-top: 1rem;
  color: var(--muted-text);
  font-size: 0.9rem;
  text-align: center;
  max-width: 900px;
}

#disclaimer {
  margin-top: 1.5rem;
  color: var(--muted-text);
  font-size: 0.75rem;
  text-align: center;
  max-width: 900px;
}

.hidden {
  display: none;
}