*{margin:0;padding:0;box-sizing:border-box}body{font-family:'Arial',sans-serif;background-color:#000;color:#fff;overflow:hidden}#game-container{position:relative;width:100vw;height:100vh}canvas{display:block;width:100%;height:100%}#hud{position:absolute;top:20px;left:20px;font-size:18px;text-shadow:1px 1px 2px #000;z-index:10}#hud div{margin-bottom:10px;background-color:rgba(0,0,0,.5);padding:5px 10px;border-radius:5px}#menu,#gameOver{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);background-color:rgba(0,0,0,.8);padding:2rem;border-radius:10px;text-align:center;z-index:20;width:80%;max-width:500px}h1{font-size:3rem;margin-bottom:1rem;color:#ff7f00;text-shadow:0 0 10px #ff7f00}button{background-color:#ff7f00;color:#fff;border:none;padding:1rem 2rem;font-size:1.2rem;margin:1rem 0;border-radius:5px;cursor:pointer;transition:all .3s}button:hover{background-color:#ff9f40;transform:scale(1.05)}#controls{margin-top:1.5rem;text-align:left;background-color:rgba(0,0,0,.5);padding:1rem;border-radius:5px}#controls h2{color:#ff7f00;margin-bottom:.5rem}#controls p{margin:.5rem 0}.hidden{display:none}