*{box-sizing:border-box;margin:0;padding:0}html,body,#root{width:100%;height:100%;overflow:hidden;background:#1a1a2e;font-family:Segoe UI,system-ui,sans-serif;touch-action:none;user-select:none;-webkit-user-select:none}#root{display:flex;align-items:center;justify-content:center}.game-container{position:relative;width:100vmin;height:100vmin;max-width:500px;max-height:500px}canvas{width:100%;height:100%;display:block;image-rendering:pixelated}.overlay{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#000000b3;z-index:10}.overlay h1{font-size:2rem;color:#fff;margin-bottom:.5rem;text-shadow:0 2px 8px rgba(0,0,0,.5)}.overlay p{color:#fffc;font-size:1rem;margin-bottom:1.5rem;text-align:center;line-height:1.4}.overlay .score-display{color:gold;font-size:1.4rem;font-weight:700;margin-bottom:1rem}.btn{padding:.75rem 2rem;font-size:1.1rem;font-weight:600;border:none;border-radius:.5rem;cursor:pointer;background:#e63946;color:#fff;transition:transform .1s,background .2s}.btn:hover{background:#c1121f;transform:scale(1.05)}.btn:active{transform:scale(.97)}.hud{position:absolute;top:8px;left:8px;right:8px;display:flex;justify-content:space-between;align-items:center;z-index:5;pointer-events:none}.hud span{color:#fff;font-size:.9rem;font-weight:600;background:#00000080;padding:4px 10px;border-radius:4px}.mobile-controls{position:absolute;bottom:12px;left:50%;transform:translate(-50%);display:grid;grid-template-areas:". up ." "left down right";gap:6px;z-index:5}.mobile-controls button{width:54px;height:54px;border:none;border-radius:10px;background:#ffffff26;color:#fff;font-size:1.5rem;cursor:pointer;display:flex;align-items:center;justify-content:center;-webkit-tap-highlight-color:transparent}.mobile-controls button:active{background:#ffffff59}.m-up{grid-area:up}.m-down{grid-area:down}.m-left{grid-area:left}.m-right{grid-area:right}@media(min-width:768px){.mobile-controls{display:none}}