:root {
  color-scheme: dark;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: radial-gradient(circle at 50% 20%, #18203f 0%, #06070f 60%);
  font-family: "Press Start 2P", "Courier New", monospace;
  color: #9efcff;
}

.wrap {
  text-align: center;
  width: min(94vw, 480px);
}

h1 {
  margin: 0 0 10px;
  color: #ff77ff;
  text-shadow: 0 0 12px #ff77ff66;
  font-size: 1.2rem;
}

.hud, .help {
  margin: 8px 0;
  font-size: 0.7rem;
}

canvas {
  width: 100%;
  height: auto;
  border: 3px solid #9efcff;
  border-radius: 10px;
  background: linear-gradient(#070b1a, #020307);
  box-shadow: 0 0 30px #27d4ff2e;
}