body{margin:0}.app{min-height:100vh;background:#0e0e0e;color:#0f0;font-family:monospace;text-align:center;overflow-x:hidden}canvas{display:block;margin:20px auto;border:2px solid #0f0}.score-css,.timer-css{font-size:16px}.timer-css{display:inline-block;transform:translateZ(0);will-change:transform}.game-over.hidden{display:none}.game-over{position:fixed;inset:0;display:grid;place-items:center;background:rgba(0,0,0,.7);z-index:1000}.game-over-card{background:#0e0e0e;color:#fff;border:2px solid #2aff2a;border-radius:14px;padding:20px 28px;min-width:280px;text-align:center}.game-over-card #game-over-msg{font-size:20px;margin-bottom:12px}.game-over-card #game-over-btn{font-size:18px;font-weight:700;padding:4px 18px 0;background:#2aff2a;color:#000;border:none;border-radius:10px;cursor:pointer}.game-over-card #game-over-btn:hover{filter:brightness(1.1)}.enter-emoji{margin-top:-8px;display:block;font-size:30px;font-weight:500}@keyframes trembleX{0%{transform:translateX(0)}10%{transform:translateX(5px)}20%{transform:translateX(-5px)}30%{transform:translateX(5px)}40%{transform:translateX(-5px)}50%{transform:translateX(5px)}60%{transform:translateX(-5px)}70%{transform:translateX(5px)}80%{transform:translateX(-5px)}90%{transform:translateX(5px)}to{transform:translateX(0)}}#timer.shake-x{animation:trembleX .7s linear}