:root{--neon-blue: #00f2ff;--neon-pink: #ff00ff;--neon-red: #ff4d4d;--bg-dark: #0a0a12}.game-container{width:100%;height:100vh;background:var(--bg-dark);position:relative;overflow:hidden;font-family:Segoe UI,system-ui,sans-serif;color:#fff}.star-bg{position:absolute;width:200%;height:200%;background-image:radial-gradient(1px 1px at 20px 30px,#fff,#0000),radial-gradient(1px 1px at 40px 70px,#fff,#0000),radial-gradient(2px 2px at 50px 160px,#fff,#0000),radial-gradient(2px 2px at 90px 40px,#fff,#0000);background-size:200px 200px;animation:moveStars 20s linear infinite;opacity:.3}@keyframes moveStars{0%{transform:translateY(0)}to{transform:translateY(-50%)}}.hud{position:absolute;top:0;left:0;right:0;padding:20px;display:flex;justify-content:space-between;align-items:center;z-index:10;background:linear-gradient(to bottom,rgba(0,0,0,.8),transparent)}.hud-item{display:flex;align-items:center;gap:8px;font-weight:700;text-shadow:0 0 10px var(--neon-blue)}.cloud-sync{font-size:10px;opacity:.6;text-transform:uppercase;letter-spacing:1px}.lives{display:flex;gap:5px}.lives .active{color:var(--neon-red);filter:drop-shadow(0 0 5px var(--neon-red))}.lives .inactive{color:#333}.overlay{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;justify-content:center;align-items:center;background:#0a0a12d9;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:20;text-align:center}.overlay h1{font-size:3rem;margin:0;background:linear-gradient(to bottom,#fff,var(--neon-blue));-webkit-background-clip:text;-webkit-text-fill-color:transparent;letter-spacing:4px}.high-score{margin:10px 0 30px;color:#aaa;display:flex;align-items:center;gap:5px}.btn-main{background:transparent;border:2px solid var(--neon-blue);color:var(--neon-blue);padding:15px 40px;font-size:1.2rem;font-weight:700;cursor:pointer;display:flex;align-items:center;gap:10px;transition:all .3s;box-shadow:0 0 15px #00f2ff33}.btn-main:hover{background:var(--neon-blue);color:#000;box-shadow:0 0 30px var(--neon-blue)}.hint{margin-top:20px;font-size:.8rem;color:#666}.stage{position:relative;width:400px;height:600px;margin:0 auto}.player{position:absolute;width:40px;height:40px;filter:drop-shadow(0 0 10px var(--neon-blue))}.bullet{position:absolute;width:4px;height:15px;background:#fff;border-radius:2px;box-shadow:0 0 10px var(--neon-blue),0 0 20px var(--neon-blue)}.enemy{position:absolute;width:40px;height:40px;transition:transform .1s}.enemy.type-0{filter:drop-shadow(0 0 8px var(--neon-red))}.enemy.type-1{filter:drop-shadow(0 0 8px var(--neon-pink))}.enemy.type-2{filter:drop-shadow(0 0 12px #ff8800)}.explosion{position:absolute;width:20px;height:20px;background:#fff;border-radius:50%;box-shadow:0 0 30px #fff,0 0 50px var(--neon-pink)}.new-record{color:#ff0;font-weight:700;margin:10px 0;animation:blink .5s infinite alternate}@keyframes blink{0%{opacity:1}to{opacity:.5}}.glitch{color:var(--neon-red);font-size:2.5rem;text-shadow:2px 2px black}