/* Neon Glowing Background */
        body {
            font-family: 'Orbitron', sans-serif;
            color: white;
            text-align: center;
            background: black;
            overflow: hidden;
            position: relative;
        }

        /* Animated Glowing Effect */
        body::before {
            content: "";
            position: fixed;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, cyan, transparent);
            animation: moveBackground 6s infinite linear;
            opacity: 0.3;
        }

        @keyframes moveBackground {
            0% { transform: translate(0, 0); }
            50% { transform: translate(20%, 20%); }
            100% { transform: translate(0, 0); }
        }

        /* Intro Page */
        #intro {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.9);
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            text-shadow: 0 0 10px cyan;
        }

        #start-btn {
            background: cyan;
            border: none;
            padding: 12px 24px;
            font-size: 1.5rem;
            font-weight: bold;
            cursor: pointer;
            transition: 0.3s;
            text-transform: uppercase;
            box-shadow: 0 0 15px cyan;
            border-radius: 8px;
        }

        #start-btn:hover {
            background: white;
            color: black;
            box-shadow: 0 0 25px cyan;
        }

        /* Game Container */
        #game-container {
            display: none;
            text-align: center;
            padding: 15px;
            position: relative;
        }

        .memory-grid {
            display: grid;
            grid-template-columns: repeat(4, 100px);
            grid-template-rows: repeat(4, 100px);
            gap: 10px;
            justify-content: center;
            margin: auto;
        }

        .card {
            width: 100px;
            height: 100px;
            background: rgba(0, 0, 0, 0.7);
            border: 2px solid cyan;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            font-weight: bold;
            color: white;
            cursor: pointer;
            transition: 0.3s;
            box-shadow: 0 0 10px cyan;
            border-radius: 10px;
        }

        .flipped {
            background: cyan;
            color: black;
            box-shadow: 0 0 15px cyan;
        }

        /* Timer & Score */
        #stats {
            margin-top: 20px;
            font-size: 1.5rem;
            text-shadow: 0 0 10px cyan;
	}