#overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.8);
            color: white;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            text-align: center;
            opacity: 1;
            transition: opacity 1s;
        }
        #message, #hand-container {
            display: none;
        }
        #loading-message {
            display: none;
        }