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

:root {
  --game-width: 1600px;
  --game-height: 900px;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background-color: #1a1a1a;
  font-family: Arial, sans-serif;
}

#game-shell {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  min-height: 100vh;
}

#game-container {
  width: var(--game-width);
  height: var(--game-height);
}

canvas {
  border: 2px solid #333;
  background-color: #0a0a0a;
  display: block;
  width: 100%;
  height: 100%;
}