* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #111;
  font-family: system-ui, sans-serif;
  color: #eee;
}

.arena {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.score {
  font-size: 2rem;
  letter-spacing: 0.5rem;
  font-variant-numeric: tabular-nums;
}

.canvas-wrap {
  position: relative;
}

canvas {
  display: block;
  background: #000;
  border: 2px solid #555;
  max-width: 90vw;
  height: auto;
}

.overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: rgba(0, 0, 0, 0.55);
  cursor: pointer;
  font-size: 1.1rem;
}

.overlay.hidden {
  display: none;
}