/* Style all range slider tracks */
input[type="range"] {
    height: 9px;
    background: transparent;
    --range-border-color: #202020;
    --range-thumb-color: #000000;
    --range-thumb-text-color: #f0f0f0;
    --range-thumb-highlighted-text-color: #f0f0f0;
    display: inline-block;
    vertical-align: middle;
    width: 100px;
    margin: 0px 8px 0px 0px;
    -webkit-appearance: none;
    appearance: none;
    background: transparent;
}

#highlighted-text-brightness-range::-webkit-slider-thumb { background: var(--range-thumb-highlighted-text-color); }
#highlighted-text-brightness-range::-moz-range-thumb { background: var(--range-thumb-highlighted-text-color); }
#highlighted-text-brightness-range::-ms-thumb { background: var(--range-thumb-highlighted-text-color); }
#text-brightness-range::-webkit-slider-thumb { background: var(--range-thumb-text-color); }
#text-brightness-range::-moz-range-thumb { background: var(--range-thumb-text-color); }
#text-brightness-range::-ms-thumb { background: var(--range-thumb-text-color); }
#text-size-range::-webkit-slider-thumb { background: var(--range-thumb-text-color); }
#text-size-range::-moz-range-thumb { background: var(--range-thumb-text-color); }
#text-size-range::-ms-thumb { background: var(--range-thumb-text-color); }

/* Custom thumb for hue-slider */
input[type="range"]::-webkit-slider-thumb {
    background: var(--range-thumb-color);
    border: 2px solid var(--range-border-color);
    border-radius: 50%;
    width: 18px;
    height: 18px;
    cursor: pointer;
    -webkit-appearance: none;
    appearance: none;
    box-shadow: 0 2px 6px rgba(0,0,0,0.15);
    margin-top: -4px; /* aligns thumb vertically in Chrome/Edge */
}

input[type="range"]::-moz-range-thumb {
    background: var(--range-thumb-color);
    border: 2px solid var(--range-border-color);
    border-radius: 50%;
    width: 18px;
    height: 18px;
    cursor: pointer;
}

input[type="range"]::-ms-thumb {
    background: var(--range-thumb-color);
    border: 2px solid var(--range-border-color);
    border-radius: 50%;
    width: 18px;
    height: 18px;
    cursor: pointer;
}

input[type="range"]::-webkit-slider-runnable-track {
    height: 9px;
    background: #555;
    border-radius: 4px;
    cursor: pointer;
}

input[type="range"]::-moz-range-track {
    height: 9px;
    background: #555;
    border-radius: 4px;
    cursor: pointer;
}

input[type="range"]::-ms-fill-lower,
input[type="range"]::-ms-fill-upper {
    height: 9px;
    background: #555;
    border-radius: 4px;
    cursor: pointer;
}

.range-value {
    display: inline-block;
    width: 30px;
    color: #666;
}