*{box-sizing:border-box;margin:0;padding:0}body{background:#0b1a2e;display:flex;justify-content:center;align-items:center;min-height:100vh;font-family:Nunito,sans-serif;overflow:hidden;touch-action:none}#back-link{position:fixed;top:12px;left:12px;color:#fff9;text-decoration:none;font-size:.85rem;font-family:Inter,sans-serif;z-index:100;background:#0006;padding:6px 12px;border-radius:20px;transition:color .2s}#back-link:hover{color:#fff}#mute-btn{position:fixed;top:12px;right:12px;background:#0006;border:none;color:#fff;font-size:1.2rem;padding:6px 10px;border-radius:20px;cursor:pointer;z-index:100}#game-wrapper{position:relative;width:min(480px,100vw,75vh);aspect-ratio:480 / 640}#canvas{width:100%;height:100%;display:block;border-radius:12px;background:#0d2240}#hud{position:absolute;top:10px;left:0;right:0;display:flex;justify-content:space-between;padding:0 16px;color:#fff;font-family:Inter,sans-serif;font-weight:700;font-size:.9rem;pointer-events:none;text-shadow:0 1px 3px rgba(0,0,0,.6)}#level-box span,#moves-box span,#undo-box span{color:#ffd32a}.overlay{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;background:#000000bf;border-radius:12px;z-index:20}.overlay-box{text-align:center;color:#fff;padding:28px 36px;background:#0a1e3cf7;border-radius:20px;border:2px solid rgba(100,180,255,.2);box-shadow:0 20px 60px #0009;max-width:90%}.overlay-emoji{font-size:4rem;margin-bottom:12px}.overlay-box h1{font-size:1.8rem;font-weight:900;margin-bottom:12px;color:#a8d8ff}.overlay-box p{font-size:1rem;color:#fffc;margin-bottom:8px;line-height:1.6}.hint-row{display:flex;flex-direction:column;gap:4px;font-size:.9rem;margin:14px 0;color:#ffffffb3}.hint-small{font-size:.82rem;color:#ffffff80;margin-bottom:4px}.btn-primary{display:block;width:100%;margin-top:16px;background:linear-gradient(135deg,#54a0ff,#00d2d3);color:#fff;font-family:Nunito,sans-serif;font-size:1.1rem;font-weight:900;border:none;padding:12px 32px;border-radius:50px;cursor:pointer;box-shadow:0 4px 20px #54a0ff66;transition:transform .15s,box-shadow .15s}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 30px #54a0ff99}.btn-primary:active{transform:translateY(0)}.btn-secondary{display:block;width:100%;margin-top:8px;background:#ffffff1a;color:#fffc;font-family:Nunito,sans-serif;font-size:1rem;font-weight:700;border:1px solid rgba(255,255,255,.2);padding:10px 28px;border-radius:50px;cursor:pointer;transition:background .15s}.btn-secondary:hover{background:#ffffff2e}