:root{color-scheme:dark;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.5}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{margin:0;padding:0;width:100%;height:100%;overflow:hidden;background:#000;color:#fafafa;touch-action:none;-webkit-touch-callout:none;-webkit-user-select:none;user-select:none}.game-container{width:100%;height:100vh;position:relative;overflow:hidden;background:linear-gradient(180deg,#001a33,#036,#004080 60%,#001a40)}canvas{display:block;width:100%;height:100%}.hud{position:absolute;top:0;left:0;right:0;padding:1rem 1.5rem;display:flex;justify-content:space-between;align-items:center;pointer-events:none;z-index:10}.hud-score{font-size:1.5rem;font-weight:700;color:#fff;text-shadow:0 2px 8px rgba(0,0,0,.5);font-variant-numeric:tabular-nums}.hud-size{font-size:1rem;color:#fffc;text-shadow:0 2px 8px rgba(0,0,0,.5)}.overlay{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#000a1ed9;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:20;gap:1rem}.overlay h1{font-size:2.5rem;font-weight:800;color:#4fc3f7;text-shadow:0 0 30px rgba(79,195,247,.4);margin:0}.overlay h2{font-size:1.8rem;font-weight:700;color:#ef5350;text-shadow:0 0 20px rgba(239,83,80,.4);margin:0}.overlay p{color:#ffffffb3;font-size:1rem;text-align:center;max-width:300px;margin:0}.overlay .final-score{font-size:3rem;font-weight:800;color:#ffd54f;text-shadow:0 0 20px rgba(255,213,79,.4)}.btn{margin-top:.5rem;padding:.8rem 2.5rem;border:none;border-radius:2rem;background:linear-gradient(135deg,#4fc3f7,#0288d1);color:#fff;font-size:1.1rem;font-weight:700;cursor:pointer;pointer-events:all;text-shadow:0 1px 3px rgba(0,0,0,.3);box-shadow:0 4px 20px #4fc3f766;transition:transform .15s}.btn:active{transform:scale(.95)}.instructions{color:#ffffff80;font-size:.85rem;margin-top:.5rem}