body {
            margin: 0;
            padding: 0;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            background-color: #f4f4f4;
            font-family: Arial, sans-serif;
            overflow: hidden;
        }

        #overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.8);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            color: white;
            text-align: center;
            transition: opacity 1s;
        }

        #message {
            font-size: 28px;
            font-weight: bold;
            margin-bottom: 20px;
            cursor: pointer;
        }

        #hand-container {
            position: relative;
            width: 120px;
            height: 120px;
            cursor: pointer;
        }

        svg {
            width: 120px;
            height: 120px;
            animation: bounce 1s infinite;
        }

        @keyframes bounce {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-15px); }
        }

        #loading-message {
            display: none;
            font-size: 18px;
            margin-top: 20px;
        }