body {
            margin: 0;
            padding: 0;
            overflow: hidden;
            background-color: #000;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
        }
        canvas {
            display: block;
            max-width: 100%;
            max-height: 100%;
        }
        #save-notification {
            position: fixed;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            color: white;
            font-family: Arial, sans-serif;
            background-color: rgba(0,0,0,0.8);
            padding: 15px 25px;
            border-radius: 5px;
            opacity: 0;
            transition: opacity 0.5s;
            pointer-events: none;
            font-size: 16px;
            box-shadow: 0 0 10px rgba(255,255,255,0.2);
        }
        #controls {
            position: fixed;
            bottom: 20px;
            left: 50%;
            transform: translateX(-50%);
            color: white;
            font-family: Arial, sans-serif;
            background-color: rgba(0,0,0,0.5);
            padding: 10px 15px;
            border-radius: 5px;
            font-size: 14px;
            text-align: center;
        }