// Embedded icons from Open Iconic.
// Released under MIT and copyright 2014 Waybury.
// https://useiconic.com/open

// Checkboxes and radios
//
// Base class takes care of all the key behavioral aspects.

.custom-control {
    position: relative;
    display: block;
    min-height: (1rem * $line-height-base);
    padding-left: $custom-control-gutter;
}

.custom-control-inline {
    display: inline-flex;
    margin-right: $custom-control-spacer-x;
}

.custom-control-input {
    position: absolute;
    z-index: -1; // Put the input behind the label so it doesn't overlay text
    opacity: 0;

    &:checked ~ .custom-control-label::before {
        color: $custom-control-indicator-checked-color;
        @include gradient-bg($custom-control-indicator-checked-bg);
        @include box-shadow($custom-control-indicator-checked-box-shadow);
    }

    &:focus ~ .custom-control-label::before {
        // the mixin is not used here to make sure there is feedback
        box-shadow: $custom-control-indicator-focus-box-shadow;
    }

    &:disabled {
        ~ .custom-control-label {
            color: $custom-control-label-disabled-color;

            &::before {
                background-color: $custom-control-indicator-disabled-bg;
            }
        }
    }
}

// Custom control indicators
//
// Build the custom controls out of psuedo-elements.

.custom-control-label {
    margin-bottom: 0;

    // Background-color and (when enabled) gradient
    &::before {
        position: absolute;
        top: (($line-height-base - $custom-control-indicator-size) * 0.5);
        left: 0;
        display: block;
        width: $custom-control-indicator-size;
        height: $custom-control-indicator-size;
        pointer-events: none;
        content: '';
        user-select: none;
        background-color: $custom-control-indicator-bg;
        @include box-shadow($custom-control-indicator-box-shadow);
    }

    // Foreground (icon)
    &::after {
        position: absolute;
        top: (($line-height-base - $custom-control-indicator-size) * 0.5);
        left: 0;
        display: block;
        width: $custom-control-indicator-size;
        height: $custom-control-indicator-size;
        content: '';
        background-repeat: no-repeat;
        background-position: center center;
        background-size: $custom-control-indicator-bg-size;
    }
}

// Checkboxes
//
// Tweak just a few things for checkboxes.

.custom-checkbox {
    .custom-control-label::before {
        @include border-radius($custom-checkbox-indicator-border-radius);
    }

    .custom-control-input:checked ~ .custom-control-label {
        &::before {
            @include gradient-bg($custom-control-indicator-checked-bg);
        }
        &::after {
            background-image: $custom-checkbox-indicator-icon-checked;
        }
    }

    .custom-control-input:indeterminate ~ .custom-control-label {
        &::before {
            @include gradient-bg($custom-checkbox-indicator-indeterminate-bg);
            @include box-shadow(
                $custom-checkbox-indicator-indeterminate-box-shadow
            );
        }
        &::after {
            background-image: $custom-checkbox-indicator-icon-indeterminate;
        }
    }

    .custom-control-input:disabled {
        &:checked ~ .custom-control-label::before {
            background-color: $custom-control-indicator-checked-disabled-bg;
        }
        &:checked ~ .custom-control-label::after {
            opacity: 0.4;
        }
        &:indeterminate ~ .custom-control-label::before {
            background-color: $custom-control-indicator-checked-disabled-bg;
        }
    }
}

// Radios
//
// Tweak just a few things for radios.

.custom-radio {
    .custom-control-label::before {
        border-radius: $custom-radio-indicator-border-radius;
    }

    .custom-control-input:checked ~ .custom-control-label {
        &::before {
            @include gradient-bg($custom-control-indicator-checked-bg);
        }
        &::after {
            background-image: $custom-radio-indicator-icon-checked;
        }
    }

    .custom-control-input:disabled {
        &:checked ~ .custom-control-label::before {
            background-color: $custom-control-indicator-checked-disabled-bg;
        }

        &:checked ~ .custom-control-label::after {
            opacity: 0.4;
        }
    }
}

// Select
//
// Replaces the browser default select with a custom one, mostly pulled from
// https://primer.github.io/.
//

.custom-select {
    display: inline-block;
    position: relative;
    width: 100%;
    height: $custom-select-height;
    line-height: $custom-select-line-height;
    color: $custom-select-color;
    vertical-align: middle;
    background: $custom-select-bg $custom-select-indicator no-repeat right
        $custom-select-padding-x center;
    background-size: $custom-select-bg-size;
    border: $custom-select-border-width solid $custom-select-border-color;

    @if $enable-rounded {
        border-radius: $custom-select-border-radius;
    } @else {
        border-radius: 0;
    }
    appearance: none;

    &:focus {
        border-color: $custom-select-focus-border-color;
        outline: 0;
        box-shadow: $custom-select-focus-box-shadow;

        &::-ms-value {
            // For visual consistency with other platforms/browsers,
            // suppress the default white text on blue background highlight given to
            // the selected option text when the (still closed) <select> receives focus
            // in IE and (under certain conditions) Edge.
            // See https://github.com/twbs/bootstrap/issues/19398.
            color: $input-color;
            background-color: $input-bg;
        }
    }

    &[multiple],
    &[size]:not([size='1']) {
        height: auto;
        padding-right: $custom-select-padding-x;
        background-image: none;
    }

    &:disabled {
        color: $custom-select-disabled-color;
        background-color: $custom-select-disabled-bg;
    }

    // Hides the default caret in IE11
    &::-ms-expand {
        opacity: 0;
    }

    select {
        -webkit-appearance: none;
        background: transparent;
        appearance: none;
        border: none;
        width: 100%;
        height: 100%;
        color: inherit;
        font-size: inherit;
        font-family: inherit;
        user-select: none;
        border-radius: 0;
        height: 100%;
        width: 100%;
        outline: none;
        text-indent: $custom-select-padding-x;
        padding-top: $custom-select-padding-y;
        padding-bottom: $custom-select-padding-y;
    }
}

.custom-select-sm {
    height: $custom-select-height-sm;
    font-size: $custom-select-font-size-sm;

    select {
        padding-top: $custom-select-padding-y;
        padding-bottom: $custom-select-padding-y;
    }
}

.custom-select-lg {
    height: $custom-select-height-lg;
    font-size: $custom-select-font-size-lg;

    select {
        padding-top: $custom-select-padding-y-lg;
        padding-bottom: $custom-select-padding-y-lg;
    }
}

// File
//
// Custom file input.

.custom-file {
    position: relative;
    display: inline-block;
    width: 100%;
    height: $custom-file-height;
    margin-bottom: 0;
}

.custom-file-input {
    position: relative;
    z-index: 2;
    width: 100%;
    height: $custom-file-height;
    margin: 0;
    opacity: 0;

    &:focus ~ .custom-file-label {
        border-color: $custom-file-focus-border-color;
        box-shadow: $custom-file-focus-box-shadow;

        &::after {
            border-color: $custom-file-focus-border-color;
        }
    }

    @each $lang, $value in $custom-file-text {
        &:lang(#{$lang}) ~ .custom-file-label::after {
            content: $value;
        }
    }
}

.custom-file-label {
    position: absolute;
    top: 0;
    right: 0;
    left: 0;
    z-index: 1;
    height: $custom-file-height;
    padding: $custom-file-padding-y $custom-file-padding-x;
    line-height: $custom-file-line-height;
    color: $custom-file-color;
    background-color: $custom-file-bg;
    border: $custom-file-border-width solid $custom-file-border-color;
    @include border-radius($custom-file-border-radius);
    @include box-shadow($custom-file-box-shadow);

    &::after {
        position: absolute;
        top: 0;
        right: 0;
        bottom: 0;
        z-index: 3;
        display: block;
        height: calc(#{$custom-file-height} - #{$custom-file-border-width} * 2);
        padding: $custom-file-padding-y $custom-file-padding-x;
        line-height: $custom-file-line-height;
        color: $custom-file-button-color;
        content: 'Browse';
        @include gradient-bg($custom-file-button-bg);
        border-left: $custom-file-border-width solid $custom-file-border-color;
        @include border-radius(
            0 $custom-file-border-radius $custom-file-border-radius 0
        );
    }
}

// Range
//
// Style range inputs the same across browsers. Vendor-specific rules for psuedo
// elements cannot be mixed. As such, there are no shared styles for focus or
// active states on prefixed selectors.

.custom-range {
    width: 100%;
    padding-left: 0; // Firefox specific
    background-color: transparent;
    appearance: none;

    &:focus {
        outline: none;
    }

    &::-moz-focus-outer {
        border: 0;
    }

    &::-webkit-slider-thumb {
        width: $custom-range-thumb-width;
        height: $custom-range-thumb-height;
        margin-top: -($custom-range-thumb-width * 0.25); // Webkit specific?
        @include gradient-bg($custom-range-thumb-bg);
        border: $custom-range-thumb-border;
        @include border-radius($custom-range-thumb-border-radius);
        @include box-shadow($custom-range-thumb-box-shadow);
        appearance: none;

        &:focus {
            outline: none;
            box-shadow: $custom-range-thumb-focus-box-shadow; // No mixin for focus accessibility
        }

        &:active {
            @include gradient-bg($custom-range-thumb-active-bg);
        }
    }

    &::-webkit-slider-runnable-track {
        width: $custom-range-track-width;
        height: $custom-range-track-height;
        color: transparent; // Why?
        cursor: $custom-range-track-cursor;
        background-color: $custom-range-track-bg;
        border-color: transparent;
        @include border-radius($custom-range-track-border-radius);
        @include box-shadow($custom-range-track-box-shadow);
    }

    &::-moz-range-thumb {
        width: $custom-range-thumb-width;
        height: $custom-range-thumb-height;
        @include gradient-bg($custom-range-thumb-bg);
        border: $custom-range-thumb-border;
        @include border-radius($custom-range-thumb-border-radius);
        @include box-shadow($custom-range-thumb-box-shadow);
        appearance: none;

        &:focus {
            outline: none;
            box-shadow: $custom-range-thumb-focus-box-shadow; // No mixin for focus accessibility
        }

        &:active {
            @include gradient-bg($custom-range-thumb-active-bg);
        }
    }

    &::-moz-range-track {
        width: $custom-range-track-width;
        height: $custom-range-track-height;
        color: transparent;
        cursor: $custom-range-track-cursor;
        background-color: $custom-range-track-bg;
        border-color: transparent; // Firefox specific?
        @include border-radius($custom-range-track-border-radius);
        @include box-shadow($custom-range-track-box-shadow);
    }

    &::-ms-thumb {
        width: $custom-range-thumb-width;
        height: $custom-range-thumb-height;
        @include gradient-bg($custom-range-thumb-bg);
        border: $custom-range-thumb-border;
        @include border-radius($custom-range-thumb-border-radius);
        @include box-shadow($custom-range-thumb-box-shadow);
        appearance: none;

        &:focus {
            outline: none;
            box-shadow: $custom-range-thumb-focus-box-shadow; // No mixin for focus accessibility
        }

        &:active {
            @include gradient-bg($custom-range-thumb-active-bg);
        }
    }

    &::-ms-track {
        width: $custom-range-track-width;
        height: $custom-range-track-height;
        color: transparent;
        cursor: $custom-range-track-cursor;
        background-color: transparent;
        border-color: transparent;
        border-width: ($custom-range-thumb-height * 0.5);
        @include box-shadow($custom-range-track-box-shadow);
    }

    &::-ms-fill-lower {
        background-color: $custom-range-track-bg;
        @include border-radius($custom-range-track-border-radius);
    }

    &::-ms-fill-upper {
        margin-right: 15px; // arbitrary?
        background-color: $custom-range-track-bg;
        @include border-radius($custom-range-track-border-radius);
    }
}