:root{--primary-color: #4fc3f7;--accent-color: #ffca28;--text-color: #ffffff;--font-family: "Outfit", sans-serif}body{margin:0;padding:0;width:100vw;height:100vh;overflow:hidden;background-color:#333;display:flex;justify-content:center;align-items:center;font-family:var(--font-family)}#game-container{position:relative;width:100%;height:100%;background-color:var(--primary-color);overflow:hidden}canvas{display:block;width:100%;height:100%}.ui-screen{position:absolute;top:0;left:0;width:100%;height:100%;display:flex;justify-content:center;align-items:center;background:#0006;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);opacity:0;pointer-events:none;transition:opacity .3s ease;z-index:10}.ui-screen.active{opacity:1;pointer-events:all}.content{text-align:center;color:var(--text-color);background:#ffffff1a;padding:2rem;border-radius:20px;border:1px solid rgba(255,255,255,.2);box-shadow:0 8px 32px #1f26875e}h1{font-size:3rem;margin-bottom:.5rem;text-shadow:2px 2px 4px rgba(0,0,0,.3)}p{font-size:1.2rem;margin-bottom:2rem}.btn{background:var(--accent-color);border:none;padding:1rem 2.5rem;font-size:1.5rem;font-weight:700;color:#333;border-radius:50px;cursor:pointer;transition:transform .2s,box-shadow .2s;font-family:var(--font-family);box-shadow:0 4px 15px #0003}.btn:hover{transform:translateY(-2px);box-shadow:0 6px 20px #0000004d}.btn:active{transform:translateY(1px)}#score-display{position:absolute;top:10%;width:100%;text-align:center;font-size:4rem;font-weight:700;color:#fff;text-shadow:2px 2px 4px rgba(0,0,0,.5);pointer-events:none;z-index:5;display:none}