*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;background:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh;display:flex;justify-content:center;align-items:center;color:#fff}#app{width:100%;max-width:900px;padding:20px}header{text-align:center;margin-bottom:20px}header h1{font-size:2.5em;margin-bottom:15px;text-shadow:2px 2px 4px rgba(0,0,0,.3)}.score-board{display:flex;justify-content:center;gap:30px;margin-top:10px}.score-item{background:#ffffff1a;padding:10px 20px;border-radius:12px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.2)}.score-item span:first-child{margin-right:8px;opacity:.8}.score-item span:last-child{font-weight:700;font-size:1.2em}main{display:flex;flex-direction:column;align-items:center;gap:20px}#game-container{position:relative;background:#0000004d;border-radius:12px;padding:10px;box-shadow:0 8px 32px #0000004d}#gameCanvas{display:block;border-radius:8px;background:#0f0f1e}#game-over{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);background:#000000e6;padding:40px;border-radius:12px;text-align:center;z-index:10;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:2px solid rgba(255,255,255,.2)}#game-over h2{font-size:2em;margin-bottom:20px;color:#ff6b6b}#game-over p{font-size:1.2em;margin-bottom:25px}#controls{display:flex;gap:15px}button{padding:12px 30px;font-size:1em;font-weight:700;color:#fff;background:#fff3;border:2px solid rgba(255,255,255,.3);border-radius:12px;cursor:pointer;transition:all .3s ease;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}button:hover{background:#ffffff4d;transform:translateY(-2px);box-shadow:0 4px 12px #0003}button:active{transform:translateY(0)}.hidden{display:none!important}footer{text-align:center;margin-top:20px;opacity:.7;font-size:.9em}@media (max-width: 768px){header h1{font-size:2em}.score-board{flex-direction:column;gap:10px}#gameCanvas{width:100%;height:auto}#controls{flex-direction:column;width:100%}button{width:100%}}