/* variables */
:root {
    /* colors */
    --cs6-color-primary-hsl: 250, 84%, 54%;
    --cs6-color-bg-hsl: 0, 0%, 100%;
    --cs6-color-contrast-high-hsl: 230, 7%, 23%;
    --cs6-color-contrast-higher-hsl: 230, 13%, 9%;
    --cs6-color-contrast-low-hsl: 240, 4%, 65%;
}

/* icons */
.cs6-icon {
    height: var(--cs6-size, 1em);
    width: var(--cs6-size, 1em);
    display: inline-block;
    color: inherit;
    fill: currentColor;
    line-height: 1;
    flex-shrink: 0;
    max-width: initial;
}

/* component */
:root {
    --custom-checkbox-size: 20px;
    --custom-checkbox-radius: 4px;
    --custom-checkbox-border-width: 1px;
    --custom-checkbox-marker-size: 18px;
}

.custom-checkbox {
    z-index: 1;
    display: inline-block;
    font-size: var(--custom-checkbox-size);
    padding: 0;
    margin: 0;
    vertical-align: bottom;
    position: relative;
    top: -1px;
    overflow: hidden;
}

.custom-checkbox__input {
    position: relative;
    /* hide native input */
    margin: 0;
    padding: 0;
    opacity: 0;
    height: 1em;
    width: 1em;
    display: block;
    z-index: 1;
    color: #ec2028;
}

.custom-checkbox__control {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: -1;
    pointer-events: none;
    transition: -webkit-transform 0.2s;
    transition: transform 0.2s;
    transition: transform 0.2s, -webkit-transform 0.2s;
    color: #ec2028;
    /* unchecked color */
}
.custom-checkbox__control::before, .custom-checkbox__control::after {
    content: "";
    position: absolute;
}
.custom-checkbox__control::before {
    /* focus circle */
    width: 160%;
    height: 160%;
    background-color: currentColor;
    top: 50%;
    left: 50%;
    -webkit-transform: translate(-50%, -50%) scale(0);
    transform: translate(-50%, -50%) scale(0);
    opacity: 0;
    border-radius: 50%;
    will-change: transform;
    transition: -webkit-transform 0.2s;
    transition: transform 0.2s;
    transition: transform 0.2s, -webkit-transform 0.2s;
}
.custom-checkbox__control::after {
    /* custom checkbox */
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* custom checkbox style */
    background-color: hsl(var(--cs6-color-bg-hsl));
    border-radius: var(--custom-checkbox-radius);
    box-shadow: inset 0 0 0 var(--custom-checkbox-border-width) currentColor, 0 0.1px 0.3px rgba(0, 0, 0, 0.06),0 1px 2px rgba(0, 0, 0, 0.12);
    /* border */
}

.custom-checkbox__input:checked ~ .custom-checkbox__control::after,
.custom-checkbox__input:indeterminate ~ .custom-checkbox__control::after {
    background-color: currentColor;
    background-repeat: no-repeat;
    background-position: center;
    background-size: var(--custom-checkbox-marker-size);
    box-shadow: none;
}

.custom-checkbox__input:checked ~ .custom-checkbox__control {
    color: #ec2028;
    /* checked color */
}
.custom-checkbox__input:checked ~ .custom-checkbox__control::after {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpolyline points='2.5 8 6.5 12 13.5 3' fill='none' stroke='%23fff' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5'/%3E%3C/svg%3E");
}

.custom-checkbox__input:indeterminate ~ .custom-checkbox__control::after {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cline x1='2' y1='8' x2='14' y2='8' fill='none' stroke='%23fff' stroke-linecap='round' stroke-linejoin='round' stroke-width='2'/%3E%3C/svg%3E");
}

.custom-checkbox__input:active ~ .custom-checkbox__control {
    -webkit-transform: scale(0.9);
    transform: scale(0.9);
}

.custom-checkbox__input:checked:active ~ .custom-checkbox__control,
.custom-checkbox__input:indeterminate:active ~ .custom-checkbox__control {
    -webkit-transform: scale(1);
    transform: scale(1);
}

.custom-checkbox__input:focus ~ .custom-checkbox__control::before {
    opacity: 0.2;
    -webkit-transform: translate(-50%, -50%) scale(1);
    transform: translate(-50%, -50%) scale(1);
}

/* --icon */
.custom-checkbox--icon {
    --custom-checkbox-size: 32px;
}
.custom-checkbox--icon .custom-checkbox__control::after {
    display: none;
}
.custom-checkbox--icon svg {
    display: block;
    color: inherit;
    position: relative;
    z-index: 1;
}