:root {
  color-scheme: light;
  background: #18171d;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
}

body {
  display: grid;
  place-items: center;
  overflow: hidden;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 50% 12%, rgba(255, 255, 255, 0.12), transparent 24rem),
    linear-gradient(160deg, #242431 0%, #101015 100%);
}

.app-shell {
  width: min(100vw, calc(100vh * 0.5625));
  height: min(100vh, calc(100vw * 1.7777778));
  display: grid;
  place-items: center;
}

#gameCanvas {
  width: 100%;
  height: 100%;
  display: block;
  background: #f8f4ef;
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.36);
  touch-action: none;
  user-select: none;
}