*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;background:linear-gradient(135deg,#1a1a2e,#0f0f1e);color:#fff;height:100vh;padding:40px 20px;overflow:hidden;box-sizing:border-box}#app{width:100%;max-width:1200px;margin:0 auto;padding:0}.game-container{background:#ffffff0d;border-radius:20px;padding:30px;box-shadow:0 20px 60px #0000004d}.game-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}h1{font-size:2.5em;background:linear-gradient(135deg,#0ff,#f0f);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.level-info{display:flex;gap:15px;align-items:center}#level-name{font-size:1.2em;color:#0ff}.btn{padding:10px 20px;background:linear-gradient(135deg,#6a5acd,#4a4acd);color:#fff;border:none;border-radius:8px;cursor:pointer;font-size:1em;transition:all .3s ease}.btn:hover{transform:translateY(-2px);box-shadow:0 5px 15px #6a5acd66}#next-btn{background:linear-gradient(135deg,#28a745,#20c997)}#next-btn:hover{transform:translateY(-2px);box-shadow:0 5px 15px #28a74566}#game-canvas{width:100%;max-width:900px;height:auto;aspect-ratio:900 / 600;margin:15px auto 0;display:block;border:2px solid rgba(0,255,255,.3);border-radius:10px;background:#0a0a0f}.controls-info{text-align:center;margin-top:20px;color:#fff9;font-size:.9em}@media (max-width: 768px){.game-container{padding:15px}h1{font-size:1.8em}#game-canvas{height:400px}.game-header{flex-direction:column;gap:15px}}