:root {
    --background-color: #000;
    --titlebox: #292929;
    --box-color: #171717;
    --big-circle-color: #2e2e2e;
    --small-circle-color: #434343;
    --button-color: #555;
    --button-hover-color: #777;
    --text-color: #fff;
    --icon-color: white;
    --slider-track-color: #444;
    --slider-thumb-color: #fff;
    --save-button-bg: #28a745;
    --save-button-hover-bg: #218838;
}

body {
    margin: 0;
    padding: 0;
    background-color: var(--background-color);
    font-family: sans-serif;
}


html, body {
 
    margin: 0;
    font-family: 'YekanBakhFaNum', sans-serif;
}



::-webkit-scrollbar {
    width: 4px;
    height: 4px;
}

::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.2);
}

::-webkit-scrollbar-thumb {
    background: rgba(176, 176, 176, 0.6); /* #b0b0b0 */
    border-radius: 10px;
}

    ::-webkit-scrollbar-thumb:hover {
        background: rgba(176, 176, 176, 0.9);
    }

/* Firefox */
* {
    scrollbar-width: thin;
    scrollbar-color: rgba(176,176,176,0.6) rgba(0,0,0,0.2);
}