:root{color-scheme:dark;font-family:Arial,sans-serif}*{box-sizing:border-box}html,body,#root{margin:0;min-height:100vh;background:#111;color:#fff;overflow:hidden}.game-container{display:flex;flex-direction:column;align-items:center;min-height:100vh;padding-top:1rem}h1{margin:0 0 .5rem;font-size:1.5rem}canvas{border:2px solid #00ffff;background:#1a1a2e}.hint{margin:.5rem 0;font-size:.85rem;color:#ffffff80}