:root {
  color-scheme: dark;
  font-family: ui-monospace, "Cascadia Mono", "Segoe UI Mono", monospace;
  background: #1a202c;
  color: #f8fafc;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  display: grid;
  place-items: center;
  background:
    linear-gradient(135deg, rgba(30, 41, 59, 0.86), rgba(20, 83, 45, 0.54)),
    repeating-linear-gradient(0deg, #151a24 0 6px, #171d28 6px 12px);
}

.shell {
  width: min(100vw, 860px);
  padding: 14px;
  display: grid;
  gap: 10px;
}

.hud,
.controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px;
  background: #101827;
  border: 3px solid #334155;
  box-shadow: 0 6px 0 #060912;
}

.hud div {
  display: grid;
  gap: 2px;
  min-width: 78px;
}

.hud span,
.controls {
  color: #cbd5e1;
  font-size: 12px;
}

.hud strong {
  color: #fef08a;
  font-size: 22px;
  line-height: 1;
}

button {
  border: 0;
  padding: 10px 14px;
  color: #101827;
  background: #f9a8d4;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
  box-shadow: inset 0 -4px 0 rgba(0, 0, 0, 0.22);
}

button:active {
  transform: translateY(2px);
}

canvas {
  display: block;
  width: 100%;
  aspect-ratio: 1;
  image-rendering: pixelated;
  background: #263244;
  border: 5px solid #0f172a;
  box-shadow: 0 8px 0 #060912;
}

@media (max-width: 560px) {
  .hud,
  .controls {
    flex-wrap: wrap;
  }

  .controls span {
    width: 100%;
  }
}