* { box-sizing: border-box; margin: 0; padding: 0; }
body { background: #000; color: #fff; font-family: system-ui; height: 100vh; display: flex; align-items: center; justify-content: center; }
#game-container { position: relative; border: 2px solid #555; }
#gameCanvas { display: block; background: #000; }
#hud { position: absolute; top: 8px; left: 8px; right: 8px; display: flex; justify-content: space-between; font-size: 14px; pointer-events: none; }
.hint { opacity: .7; font-size: 12px; }