/// Replace `$search` with `$replace` in `$string`
/// @author Hugo Giraudel
/// @param {String} $string - Initial string
/// @param {String} $search - Substring to replace
/// @param {String} $replace ('') - New value
/// @return {String} - Updated string
@function str-replace($string, $search, $replace: "") {
    $index: str-index($string, $search);

    @if $index {
        @return str-slice($string, 1, $index - 1) + $replace + str-replace(str-slice($string, $index + str-length($search)), $search, $replace);
    }

    @return $string;
}

$escaped_color_dark_1: str-replace("" + $color_dark_1, "#", "%23") !default;

/* Placeholders */
::placeholder,
.form-control::placeholder {
    color: inherit;
    opacity: .5;
}


/* Ratings */
.nk-rating {
    position: relative;
    display: inline-block;
    overflow: hidden;
    font-size: 1.2rem;

    input {
        display: none;

        &:checked ~ label {
            span:first-child {
                display: none;
            }
            span:last-child {
                display: block;
            }
        }
    }
    label {
        position: relative;
        display: block;
        float: right;
        padding-right: 2px;
        padding-left: 2px;
        margin: 0;
        clear: none;
        line-height: 1;
        cursor: default;
        cursor: pointer;

        span:first-child {
            display: none;
            display: block;
        }
        span:last-child {
            display: none;
        }

        &::after,
        &::before {
            content: none;
            display: none;
        }

        &:hover,
        &:hover ~ label {
            span:first-child {
                display: none;
            }
            span:last-child {
                display: block;
            }
        }
    }
}

/* Size Selector */
.nk-size-selector {
    &::after {
        content: "";
        display: table;
        width: 100%;
        clear: both;
    }

    input {
        position: absolute;
        left: -100000px;
        opacity: .01;
    }
    label {
        position: relative;
        display: block;
        float: left;
        min-width: 60px;
        padding: 5px 25px;
        text-align: center;
        cursor: pointer;
        background-color: $color_dark_1;

        &::after {
            content: "";
            position: absolute;
            display: block;
            top: 0;
            right: 0;
            bottom: 0;
            left: 0;
            border: 1px solid;
            opacity: .1;
            transition: .15s opacity;
        }

        &:hover::after,
        &.hover::after {
            opacity: .5;
            z-index: 1;
        }
    }
    input:checked + label::after {
        opacity: 1;
        z-index: 1;
    }
    label ~ label {
        margin-left: -1px;
    }
}

/* Color Selector */
.nk-color-selector {
    &::after {
        content: "";
        display: table;
        width: 100%;
        clear: both;
    }

    input {
        position: absolute;
        left: -100000px;
        opacity: .01;
    }
    label {
        position: relative;
        display: block;
        float: left;
        width: 22px;
        height: 22px;
        margin-top: 6px;
        margin-right: 6px;
        margin-bottom: 6px;
        margin-left: 6px;
        font-size: 0;
        color: #fff;
        text-align: center;
        cursor: pointer;
        background-color: #fff;
        border-radius: 11px;

        &::after {
            content: "";
            position: absolute;
            display: block;
            top: -5px;
            right: -5px;
            bottom: -5px;
            left: -5px;
            border: 1px solid;
            border-radius: 16px;
            opacity: 0;
            transition: .3s opacity;
        }
    }
    input:checked + label::after {
        opacity: 1;
        z-index: 1;
    }
    label ~ label {
        margin-left: 16px;
    }
}

/* From Style 1 */
.form-control {
    padding: 12px 20px;
    font-size: 1em;
    font-weight: 400;
    line-height: 1.2;
    color: inherit;
    background: none;
    border: none;
    border-bottom: 1px solid #404040;
    border-radius: 0;
    transition: .3s border, .3s color;

    &:focus,
    &.focus,
    &:active {
        color: inherit;
        background: none;
        border-bottom: 1px solid #fff;
    }

    &:focus {
        box-shadow: none;
    }
}
input.form-control {
    height: auto;
}
select.form-control {
    padding: 6px 20px;
}
select.form-control option {
    color: #000;
}
@-moz-document url-prefix("") {
    select.form-control option {
        color: inherit;
    }
}
select.form-control[multiple] option {
    color: inherit;
}

.form-control:disabled,
.form-control[readonly] {
    background-color: transparent;
    opacity: .4;
}


/* Custom Checkbox */
.custom-control-label::before {
    background-color: $color_dark_2;
    border-color: $color_dark_4;
}
.custom-control-input:checked ~ .custom-control-label::before {
    color: $color_dark_1;
    background-color: #fff;
    border-color: #fff;
}
.custom-checkbox .custom-control-input:checked ~ .custom-control-label::after {
    background-image: url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'><path fill='none' stroke='#{$escaped_color_dark_1}' stroke-linecap='round' stroke-linejoin='round' stroke-width='3' d='M4 8.5L6.5 11l6-6'/></svg>");
}
.custom-control-input:focus ~ .custom-control-label::before {
    box-shadow: 0 0 0 .2rem rgba(#fff, .15);
}
.custom-control-input:focus:not(:checked) ~ .custom-control-label::before {
    border-color: #fff;
}

/* Input Number */
.nk-form-control-number {
    padding: 4px;
    white-space: nowrap;
    background-color: $color_dark_1;
    border-radius: 2px;

    > * {
        display: inline-block;
        width: auto;
        padding: 11px 15px;
        font-size: 1em;
        font-weight: 400;
        line-height: 1.2;
        vertical-align: middle;
        border: 1px solid #fff;
    }

    .nk-form-control-number-down,
    .nk-form-control-number-up {
        min-width: 27px;
        padding: 11px 8px;
        font-family: sans-serif;
        text-align: center;
        cursor: pointer;
        user-select: none;
        transition: .3s background-color;

        &:hover {
            background-color: $color_dark_4;
        }
    }
    .nk-form-control-number-down {
        &::after {
            content: "-";
        }
        border-right: none;
    }
    .nk-form-control-number-up {
        &::after {
            content: "+";
        }
        border-left: none;
    }

    input {
        text-align: center;
        -moz-appearance: textfield; // stylelint-disable-line

        &:focus,
        &.focus,
        &:active {
            border-color: #fff;
        }
    }

    input::-webkit-inner-spin-button,
    input::-webkit-outer-spin-button {
        margin: 0;
        -webkit-appearance: none; // stylelint-disable-line
    }
}


/* Validation */
div.nk-error {
    padding: 0;
    margin: 5px 0;
    font-weight: 400;
    color: $color_danger;
    background-color: transparent;
    z-index: 1;
}
.form-control.nk-error,
.nk-form-style-1 .form-control.nk-error {
    border-bottom: 1px solid $color_danger;
}

.nk-form-response-success {
    display: none;
    margin-bottom: 10px;
    color: $color_success;
}
.nk-form-response-error {
    display: none;
    margin-bottom: 10px;
    color: $color_danger;
}