*{margin:0;padding:0;box-sizing:border-box}html,body{width:100%;height:100%;overflow:hidden}body{background-color:#000;font-family:Arial,sans-serif}.game-container{width:100%;height:100%;position:relative}#game{width:100%;height:100%}#game canvas{display:block;background-color:#000;cursor:pointer}.chat-container{position:fixed;bottom:20px;left:50%;transform:translate(-50%);width:100%;max-width:400px;padding:0 20px;z-index:1000}#chatInput{width:100%;padding:12px 16px;font-size:14px;font-family:Arial,sans-serif;background-color:#fff;border:3px solid #0f3460;border-radius:20px;outline:none;color:#1a1a2e}#chatInput:focus{border-color:#4a90d9;box-shadow:0 0 10px #4a90d94d}#chatInput::placeholder{color:#888}