:root {
        --light-black: #030310;       /* soft neutral grey */
        --dark-white: #ffffff;         /* elegant dark navy */
        --accent-blue: #3b82f6;      /* bright modern blue */
        --light-purple: #ffffff;     /* soft pastel yellow */
        --gold: #fbbf24;             /* warm modern gold */
        --light-pink: #f9a8d4;       /* modern soft pink */
        --dark-red: #b91c1c;         /* clean, deep red */
        --light-green: #242524;      /* fresh pastel green */
    }

    body{
        font-family: "Al Nile", Helvetica, Arial, sans-serif;
        font-size: 18px;
        /*background-color:var(--dark-white);*/
        color: var(--light-black);
        background: linear-gradient(
                to right,
                #fbbf24,   /* warm gold */
                #e5e4e2,   /* silver / light metallic grey */
                #d4af37    /* darker gold / bronze-ish */
        );
    }

    h1{
        text-align: center;
    }

    .container{
        width: 90%;
        max-width: 680px;

    }
    h1,.container,.output{
        margin: 20px auto;
    }

    label, legend{
        font-weight: bold;
    }

    .input-container{
        display: flex;
        flex-direction: column;

    }

    button{
        cursor: pointer;
        padding: 8px 16px;
        border-radius: 6px;
        background-color: var(--light-purple);
        border: 2px solid var(--light-black);
        color: var(--dark-white);
        font-weight: bold;
        transition: 0.2s ease;

    }
    button:hover {
        background-color: var(--accent-blue);
        border-color: var(--accent-blue);
    }
    button, input, select {
        min-height: 24px;
        color: var(--light-green);
    }
        fieldset,
        label,
        button,
        input,
        select {
            margin-bottom: 10px;
        }
    .output {
        border: 2px solid var(--light-black);
        padding: 10px;
        text-align: center;
    }
    .hide {
        display: none;
    }
    .output span {
        font-weight: bold;
        font-size: 1.2em;
    }
    .surplus {
        color: var(--light-pink);
    }

    .deficit {
        color: var(--light-green);
    }