body {
    font-family: Arial, sans-serif;
    background-color: #111;
    color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.memory-container {
    text-align: center;
    max-width: 900px;
}

.tile-row {
    display: flex;
    justify-content: center;
    margin: 20px 0;
    gap: 10px;
}

.tile {
    width: 60px;
    height: 60px;
    border-radius: 10px;
    background-color: #333;
    box-shadow: 0 0 10px #000;
    transition: 0.3s;
    cursor: pointer;
}

.tile.glow {
    background-color: #00ffea;
    box-shadow: 0 0 20px #00ffea, 0 0 40px #00ffea;
}

.tile.obstacle {
    background-color: #ff0040;
    box-shadow: 0 0 15px #ff0040, 0 0 30px #ff0040;
}

.controls button {
    padding: 10px 15px;
    margin: 5px;
    font-size: 16px;
    cursor: pointer;
    border-radius: 5px;
    border: none;
}

#status {
    margin-top: 15px;
    font-weight: bold;
}