body{margin:0;padding:0;overflow:hidden;background:#0a0a0a;font-family:Arial,sans-serif;display:flex;justify-content:center;align-items:center;min-height:100vh}#gameCanvas{width:100%;max-width:100vw;height:100%;max-height:100vh;aspect-ratio:16 / 9;position:relative}.modal{display:none;position:fixed;z-index:1000;left:0;top:0;width:100%;height:100%;background-color:#000c}.modal-content{background:linear-gradient(135deg,#1a1a2e,#16213e);margin:5% auto;padding:30px;border:2px solid #ffd700;border-radius:15px;width:80%;max-width:600px;color:#fff;box-shadow:0 0 30px #ffd7004d}.close{color:gold;float:right;font-size:28px;font-weight:700;cursor:pointer}.close:hover{color:#fff}h2{color:gold;text-shadow:0 0 10px rgba(255,215,0,.5)}