* { margin: 0; padding: 0; box-sizing: border-box; }

html, body {
  height: 100%;
  background: #0b0e1a;
  color: #e8ecff;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

main {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

canvas {
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  width: min(96vw, calc((100vh - 60px) * 4 / 3));
  aspect-ratio: 4 / 3;
  height: auto;
  border-radius: 12px;
  border: 1px solid #232842;
  box-shadow: 0 0 60px rgba(77, 210, 255, 0.08);
  cursor: none;
}

.hint {
  font-size: 12px;
  color: #5d6484;
  white-space: nowrap;
}