*{margin:0;padding:0;box-sizing:border-box}body{font-family:Courier New,monospace;background:linear-gradient(135deg,#0a0a1a 0%,#1a0a2e 50%,#0a0a1a 100%);color:#fff;overflow:hidden;display:flex;justify-content:center;align-items:center;min-height:100vh}#game-container{position:relative;width:800px;height:600px;border:3px solid #00ffff;border-radius:10px;box-shadow:0 0 40px #00ffff4d,inset 0 0 30px #00000080;overflow:hidden;background:#000}#game-canvas{display:block;width:100%;height:100%;background:radial-gradient(circle at 50% 50%,#0a0a20 0%,#000 100%)}#ui-overlay{position:absolute;top:15px;left:15px;right:15px;display:flex;justify-content:space-between;font-size:14px;font-weight:700;text-shadow:0 0 5px rgba(0,255,255,.8);pointer-events:none;z-index:10}#ui-overlay>div{background:rgba(0,0,0,.6);padding:5px 10px;border-radius:5px;border:1px solid rgba(0,255,255,.3)}#score span,#lives span,#level span{color:#0f0;text-shadow:0 0 5px #00ff00}#lives span{color:red;text-shadow:0 0 5px #ff0000}#level span{color:#ff0;text-shadow:0 0 5px #ffff00}.screen{position:absolute;top:0;right:0;bottom:0;left:0;background:rgba(0,0,0,.85);-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);display:flex;flex-direction:column;justify-content:center;align-items:center;gap:20px;z-index:20;transition:opacity .3s ease}.hidden{opacity:0;pointer-events:none}.screen h1{font-size:48px;text-align:center;color:#0ff;text-shadow:0 0 10px #00ffff,0 0 20px #00ffff,0 0 30px #00ffff;letter-spacing:4px;animation:glow 2s ease-in-out infinite}.screen p{font-size:16px;color:#aaa;text-align:center;line-height:1.6}.screen button{font-family:Courier New,monospace;font-size:20px;font-weight:700;padding:15px 40px;background:linear-gradient(135deg,#00ffff 0%,#0080ff 100%);border:2px solid #fff;border-radius:8px;color:#000;cursor:pointer;transition:all .3s ease;text-transform:uppercase;letter-spacing:2px}.screen button:hover{transform:scale(1.05);box-shadow:0 0 20px #0ffc}.screen button:active{transform:scale(.98)}@keyframes glow{0%,to{text-shadow:0 0 10px #00ffff,0 0 20px #00ffff,0 0 30px #00ffff}50%{text-shadow:0 0 20px #00ffff,0 0 40px #00ffff,0 0 60px #00ffff}}@media (max-width: 850px){#game-container{width:95vw;height:70vh}.screen h1{font-size:32px}.screen button{font-size:16px;padding:12px 30px}}