.blind-area {
    overflow-y: scroll;
    width: 280px;
    position: fixed;
    left: 0;
    top: 0;
    height: 100%;
    background-color: #292e35;
    padding: 30px 15px;
    z-index: 1000;
    transition: .3s;
    transform: scale(.8);
    /* کوچک و مخفی */
    visibility: hidden;
    opacity: 0;
}

.blind-area--show {
    transform: scale(1);
    /* نمایش */
    visibility: visible;
    opacity: 1;
}

.blind__overlay {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    right: 0;
    background-color: #000;
    transition: .3s;
    z-index: 500;
    visibility: hidden;
    opacity: 0;
}

.blind__overlay--show {
    visibility: visible;
    opacity: .5;
}

.blind__button--hidden {
    opacity: 0;
    pointer-events: none;
}

.blind__button {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-top-right-radius: 15px;
    border-bottom-right-radius: 15px;
    position: fixed;
    left: 0;
    top: 55%;
    transition: .3s;
    background-color: #1C39BB;
    border: 0;
    z-index: 1000;
}

.blind__button img {
    width: 30px;
    height: 30px;
}

.blind__button i {
    color: #fff;
    font-size: 36px;
}

.blind__button__text {
    position: absolute;
    border-radius: 5px;
    left: 120%;
    top: 7px;
    font-size: 14px;
    padding: 9.5px 5px;
    color: #fff;
    background-color: #454545;
    white-space: nowrap;
    display: flex;
    visibility: hidden;
    opacity: 0;
    transition: .3s;
}

.blind__button:hover .blind__button__text {
    visibility: visible;
    opacity: 1;
}

.blind__button__text::before {
    position: absolute;
    content: "";
    display: inline-block;
    width: 0;
    top: 50%;
    right: 100%;
    height: 0;
    border-style: solid;
    border-width: 3.5px 5px 3.5px;
    border-color: transparent #454545 transparent transparent;
    -webkit-transform: translateY(-50%);
    transform: translateY(-50%);
}

.blind-area {
    overflow-y: scroll;
    width: 280px;
    position: fixed;
    left: 0;
    top: 0;
    height: 100%;
    background-color: #292e35;
    padding: 30px 15px;
    z-index: 1000;
    transition: .3s;
    transform: scale(.8);
    visibility: hidden;
    opacity: 0;
}

.blind-area--show {
    transform: scale(1);
    visibility: visible;
    opacity: 1;
}

.blind {
    margin-bottom: 30px;
}

.blind__title {
    color: #fff;
    font-size: 16px;
    font-weight: 500;
    border-bottom: 1px solid #434343;
    display: block;
    padding-bottom: 10px;
    margin-bottom: 20px;
}

.blind__link {
    display: block;
    padding: .6em;
    margin: 0 0 15px;
    border-radius: 5px;
    cursor: pointer;
    color: #fff;
    text-decoration: none;
    background: 0 0;
    border: 1px solid #fff;
    font-size: 16px;
    width: 100%;
}

.custom__info {
    font-size: 15px;
    color: #fff;
    margin-bottom: 10px;
}

.custom {
    display: flex;
    -webkit-box-align: center;
    align-items: center;
    justify-content: space-between;
    border-radius: 5px;
    overflow: hidden;
    margin-bottom: 15px;
}

.custom__btn {
    flex-grow: 1;
    border: 0;
    padding: 12px 0;
    background-color: #2250fc;
    color: #fff;
}

.custom__btn:not(:last-child) {
    border-left: .5px solid #2220fc;
}

.font-color {
    appearance: auto;
    border-radius: 5px;
    height: 35px !important;
    min-height: 30px !important;
    cursor: default;
    margin-bottom: 10px;
    box-sizing: border-box;
    border-width: 0 !important;
    border-style: none !important;
    border-image: initial;
    width: 100%;
    padding: 3px 5px !important;
}

.blind__overlay {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    right: 0;
    background-color: #000;
    transition: .3s;
    z-index: 500;
    visibility: hidden;
    opacity: 0;
}

.blind__overlay--show {
    visibility: visible;
    opacity: .5;
}

#reset-settings {
    width: 100%;
}

body.colorblind1 {
    /* سرخ کوری (Protanopia) */
    filter: grayscale(30%) sepia(100%) hue-rotate(-25deg) saturate(200%);
}

body.colorblind2 {
    /* سرخ دشواربینی (Protanomaly) */
    filter: sepia(60%) hue-rotate(-15deg) saturate(150%);
}

body.colorblind3 {
    /* سبز دشواربینی (Deuteranomaly) */
    filter: sepia(60%) hue-rotate(15deg) saturate(150%);
}

body.colorblind4 {
    /* سبز کوری (Deuteranopia) */
    filter: grayscale(30%) sepia(100%) hue-rotate(25deg) saturate(200%);
}

body.colorblind5 {
    /* آبی دشواربینی (Tritanomaly) */
    filter: sepia(60%) hue-rotate(90deg) saturate(150%);
}

body.colorblind6 {
    /* آبی کوری (Tritanopia) */
    filter: grayscale(30%) sepia(100%) hue-rotate(90deg) saturate(200%);
}

body.colorblind7 {
    /* تک رنگ بینی کامل (Achromatopsia) */
    filter: grayscale(100%);
}

body.colorblind8 {
    /* تک رنگ مخروطی (Achromatomaly) */
    filter: grayscale(80%) contrast(120%);
}