body {
    background-color: #121212;
    color: #ffffff;
    font-family: Arial, sans-serif;
    display: flex;
    flex-direction: column;
    height: 100vh;
    margin: 0;
}

#left-panel {
    width: 40%;
    padding: 20px;
}

#right-panel {
    width: 60%;
    padding: 20px;
    position: relative;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    border: 1px solid #444;
    padding: 8px;
    text-align: center;
}

canvas {
    background-color: #1c2526;
    border-radius: 8px;
    width: 100%;
    height: auto;
    max-height: 400px;
}

select, button {
    background-color: #333;
    color: #fff;
    border: 1px solid #555;
    padding: 5px;
    margin: 5px;
}

#feedback {
    margin-top: 10px;
}

#instructions {
    margin-top: 20px;
    font-size: 14px;
}

@media (max-width: 768px) {
    body {
        flex-direction: column;
        height: auto;
    }
    #left-panel, #right-panel {
        width: 100%;
        padding: 10px;
    }
    canvas {
        max-height: 300px;
    }
}

@media (min-width: 768px) {
    body {
        flex-direction: row;
    }
    #left-panel {
        width: 40%;
    }
    #right-panel {
        width: 60%;
    }
}