:root {
  --ra-red: #e63324;
  --ink: #111111;
  --muted: #737373;
  --paper: #f7f7f4;
  --track: #252525;
  --track-light: #343434;
  --line: rgba(17, 17, 17, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 18% 18%, rgba(230, 51, 36, 0.12), transparent 30%),
    linear-gradient(135deg, #ffffff 0%, var(--paper) 100%);
  color: var(--ink);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

button {
  font: inherit;
}

.game-shell {
  width: min(1200px, calc(100vw - 28px));
  margin: 0 auto;
  padding: 24px 0;
}

.brand-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 14px;
}

.brand-logo {
  width: clamp(120px, 18vw, 230px);
  height: auto;
  display: block;
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--ra-red);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
  line-height: 0.95;
  letter-spacing: 0;
}

h1 {
  font-size: clamp(2.15rem, 5vw, 5rem);
  text-transform: uppercase;
}

.game-card {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 24px 70px rgba(17, 17, 17, 0.12);
  overflow: hidden;
}

.hud {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  background: var(--line);
  border-bottom: 1px solid var(--line);
}

.hud > div {
  background: #ffffff;
  padding: 12px 14px;
}

.hud-label {
  display: block;
  margin-bottom: 2px;
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hud strong {
  font-size: clamp(1rem, 2vw, 1.65rem);
}

.canvas-wrap {
  position: relative;
  background: #151515;
  aspect-ratio: 1200 / 680;
  overflow: hidden;
}

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

.overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 14px;
  padding: 28px;
  background:
    linear-gradient(rgba(255, 255, 255, 0.86), rgba(255, 255, 255, 0.78)),
    radial-gradient(circle at center, rgba(230, 51, 36, 0.16), transparent 55%);
  text-align: center;
}

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

.overlay img {
  width: min(320px, 62vw);
}

.overlay h2 {
  max-width: 720px;
  font-size: clamp(2rem, 6vw, 5.8rem);
  text-transform: uppercase;
}

.overlay p:not(.eyebrow) {
  max-width: 560px;
  margin: 0;
  color: #333333;
  font-size: clamp(0.95rem, 2vw, 1.15rem);
}

.overlay button {
  margin-top: 8px;
  border: 0;
  border-radius: 6px;
  background: var(--ra-red);
  color: #ffffff;
  padding: 14px 22px;
  font-weight: 900;
  text-transform: uppercase;
  cursor: pointer;
  box-shadow: 0 12px 26px rgba(230, 51, 36, 0.28);
}

.overlay button:focus-visible,
.control:focus-visible {
  outline: 3px solid #111111;
  outline-offset: 3px;
}

.mobile-controls {
  display: none;
  grid-template-columns: 1fr 1.3fr 1fr 1.1fr;
  gap: 8px;
  padding: 10px;
  background: #ffffff;
  border-top: 1px solid var(--line);
}

.control {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #f3f3f0;
  color: var(--ink);
  min-height: 52px;
  font-size: 1.5rem;
  font-weight: 900;
  touch-action: none;
}

.control.throttle {
  background: var(--ra-red);
  color: #ffffff;
  font-size: 1rem;
  text-transform: uppercase;
}

.control.brake {
  font-size: 0.9rem;
  text-transform: uppercase;
}

.control.is-active {
  transform: translateY(1px);
  filter: brightness(0.92);
}

.instructions {
  margin: 0;
  padding: 12px 14px 14px;
  color: var(--muted);
  font-size: 0.92rem;
}

@media (max-width: 760px) {
  .game-shell {
    width: 100%;
    padding: 12px;
  }

  .brand-panel {
    align-items: flex-start;
    flex-direction: column;
  }

  .hud {
    grid-template-columns: repeat(3, 1fr);
  }

  .hud > div {
    padding: 10px;
  }

  .mobile-controls {
    display: grid;
  }

  .instructions {
    font-size: 0.82rem;
  }
}