// Helper function for the normalize() mixin.
@use 'sass:math';

@function _normalize-include($section, $exclude: null) {
    // Initialize the global variables needed by this function.
    @if not global_variable_exists(_normalize-include) {
        $_normalize-include: () !global;
        $_normalize-exclude: () !global;
    }

    // Since we are given 2 parameters, set the global variables.
    @if $exclude != null {
        $include: $section;

        // Sass doesn't have static variables, so the work-around is to stuff these
        // values into global variables so we can access them in future calls.
        $_normalize-include: if(
            type-of($include) == 'list',
            $include,
            ($include)
        ) !global;
        $_normalize-exclude: if(
            type-of($exclude) == 'list',
            $exclude,
            ($exclude)
        ) !global;

        @return true;
    }

    // Check if $section is in the $include list.
    @if index($_normalize-include, $section) {
        @return true;
    }

    // If $include is set to (all), make sure $section is not in $exclude.
    @else if not
        index($_normalize-exclude, $section) and
        index($_normalize-include, all)
    {
        @return true;
    }

    @return false;
}

@mixin normalize(
    $include: (
        all,
    ),
    $exclude: ()
) {
    // Initialize the helper function by passing it this mixin's parameters.
    $init: _normalize-include($include, $exclude);

    // If we've customized any font variables, we'll need extra properties.
    @if $base-line-height !=
        24px or
        $base-unit !=
        'em' or
        $h2-font-size !=
        1.5 *
        $base-font-size or
        $h3-font-size !=
        1.17 *
        $base-font-size or
        $h4-font-size !=
        1 *
        $base-font-size or
        $h5-font-size !=
        0.83 *
        $base-font-size or
        $h6-font-size !=
        0.67 *
        $base-font-size
    {
        $normalize-vertical-rhythm: true !global;
    }

    /*! normalize-scss | MIT/GPLv2 License | bit.ly/normalize-scss */

    @if _normalize-include(document) {
        /* Document
       ========================================================================== */

        /**
     * 1. Correct the line height in all browsers.
     * 2. Prevent adjustments of font size after orientation changes in
     *    IE on Windows Phone and in iOS.
     */

        html {
            @if $base-font-family {
                /* Change the default font family in all browsers (opinionated). */
                font-family: $base-font-family;
            }

            @if $base-font-size != 16px or $normalize-vertical-rhythm {
                // Correct old browser bug that prevented accessible resizing of text
                // when root font-size is set with px or em.
                font-size: math.div($base-font-size, 16px) * 100%;
            }

            @if $normalize-vertical-rhythm {
                line-height: math.div($base-line-height, $base-font-size) *
                    1em; /* 1 */
            } @else {
                line-height: 1.15; /* 1 */
            } /* 2 */
            text-size-adjust: 100%; /* 2 */
        }
    }

    @if _normalize-include(sections) {
        /* Sections
       ========================================================================== */

        /**
     * Remove the margin in all browsers (opinionated).
     */

        body {
            margin: 0;
        }

        /**
     * Add the correct display in IE 9-.
     */

        article,
        aside,
        footer,
        header,
        nav,
        section {
            display: block;
        }

        /**
     * Correct the font size and margin on `h1` elements within `section` and
     * `article` contexts in Chrome, Firefox, and Safari.
     */

        h1 {
            @include normalize-font-size($h1-font-size);

            @if $normalize-vertical-rhythm {
                @include normalize-line-height($h1-font-size);
            }

            @if $normalize-vertical-rhythm {
                /* Set 1 unit of vertical rhythm on the top and bottom margins. */
                @include normalize-margin(1 0, $h1-font-size);
            } @else {
                margin: 0.67em 0;
            }
        }

        @if $normalize-vertical-rhythm {
            h2 {
                @include normalize-font-size($h2-font-size);
                @include normalize-line-height($h2-font-size);
                @include normalize-margin(1 0, $h2-font-size);
            }

            h3 {
                @include normalize-font-size($h3-font-size);
                @include normalize-line-height($h3-font-size);
                @include normalize-margin(1 0, $h3-font-size);
            }

            h4 {
                @include normalize-font-size($h4-font-size);
                @include normalize-line-height($h4-font-size);
                @include normalize-margin(1 0, $h4-font-size);
            }

            h5 {
                @include normalize-font-size($h5-font-size);
                @include normalize-line-height($h5-font-size);
                @include normalize-margin(1 0, $h5-font-size);
            }

            h6 {
                @include normalize-font-size($h6-font-size);
                @include normalize-line-height($h6-font-size);
                @include normalize-margin(1 0, $h6-font-size);
            }
        }
    }

    @if _normalize-include(grouping) {
        /* Grouping content
       ========================================================================== */

        @if $normalize-vertical-rhythm {
            /**
       * Set 1 unit of vertical rhythm on the top and bottom margin.
       */

            blockquote {
                @include normalize-margin(1 $indent-amount);
            }

            dl,
            ol,
            ul {
                @include normalize-margin(1 0);
            }

            /**
       * Turn off margins on nested lists.
       */

            ol,
            ul {
                ol,
                ul {
                    margin: 0;
                }
            }

            dd {
                margin: 0 0 0 $indent-amount;
            }

            ol,
            ul {
                padding: 0 0 0 $indent-amount;
            }
        }

        /**
     * Add the correct display in IE 9-.
     */

        figcaption,
        figure {
            display: block;
        }

        /**
     * Add the correct margin in IE 8.
     */

        figure {
            @if $normalize-vertical-rhythm {
                @include normalize-margin(1 $indent-amount);
            } @else {
                margin: 1em $indent-amount;
            }
        }

        /**
     * 1. Add the correct box sizing in Firefox.
     * 2. Show the overflow in Edge and IE.
     */

        hr {
            box-sizing: content-box; /* 1 */
            height: 0; /* 1 */
            overflow: visible; /* 2 */
        }

        /**
     * Add the correct display in IE.
     */

        main {
            display: block;
        }

        @if $normalize-vertical-rhythm {
            /**
       * Set 1 unit of vertical rhythm on the top and bottom margin.
       */

            p,
            pre {
                @include normalize-margin(1 0);
            }
        }

        /**
     * 1. Correct the inheritance and scaling of font size in all browsers.
     * 2. Correct the odd `em` font sizing in all browsers.
     */

        pre {
            font-family: monospace, monospace; /* 1 */
            font-size: 1em; /* 2 */
        }
    }

    @if _normalize-include(links) {
        /* Links
       ========================================================================== */

        /**
     * 1. Remove the gray background on active links in IE 10.
     * 2. Remove gaps in links underline in iOS 8+ and Safari 8+.
     */

        a {
            background-color: transparent; /* 1 */
            text-decoration-skip: objects; /* 2 */
        }
    }

    @if _normalize-include(text) {
        /* Text-level semantics
       ========================================================================== */

        /**
     * 1. Remove the bottom border in Chrome 57- and Firefox 39-.
     * 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
     */

        abbr[title] {
            border-bottom: none; /* 1 */
            text-decoration: underline; /* 2 */
            text-decoration: underline dotted; /* 2 */
        }

        /**
     * Prevent the duplicate application of `bolder` by the next rule in Safari 6.
     */

        b,
        strong {
            font-weight: inherit;
        }

        /**
     * Add the correct font weight in Chrome, Edge, and Safari.
     */

        b,
        strong {
            font-weight: bolder;
        }

        /**
     * 1. Correct the inheritance and scaling of font size in all browsers.
     * 2. Correct the odd `em` font sizing in all browsers.
     */

        code,
        kbd,
        samp {
            font-family: monospace, monospace; /* 1 */
            font-size: 1em; /* 2 */
        }

        /**
     * Add the correct font style in Android 4.3-.
     */

        dfn {
            font-style: italic;
        }

        /**
     * Add the correct background and color in IE 9-.
     */

        mark {
            background-color: #ff0;
            color: #000;
        }

        /**
     * Add the correct font size in all browsers.
     */

        small {
            font-size: 80%;
        }

        /**
     * Prevent `sub` and `sup` elements from affecting the line height in
     * all browsers.
     */

        sub,
        sup {
            font-size: 75%;
            line-height: 0;
            position: relative;
            vertical-align: baseline;
        }

        sub {
            bottom: -0.25em;
        }

        sup {
            top: -0.5em;
        }
    }

    @if _normalize-include(embedded) {
        /* Embedded content
       ========================================================================== */

        /**
     * Add the correct display in IE 9-.
     */

        audio,
        video {
            display: inline-block;
        }

        /**
     * Add the correct display in iOS 4-7.
     */

        audio:not([controls]) {
            display: none;
            height: 0;
        }

        /**
     * Remove the border on images inside links in IE 10-.
     */

        img {
            border-style: none;
        }

        /**
     * Hide the overflow in IE.
     */

        svg:not(:root) {
            overflow: hidden;
        }
    }

    @if _normalize-include(forms) {
        /* Forms
       ========================================================================== */

        /**
     * 1. Change the font styles in all browsers (opinionated).
     * 2. Remove the margin in Firefox and Safari.
     */

        button,
        input,
        optgroup,
        select,
        textarea {
            font-family: if(
                $base-font-family,
                $base-font-family,
                sans-serif
            ); /* 1 */

            font-size: 100%; /* 1 */

            @if $normalize-vertical-rhythm {
                line-height: math.div($base-line-height, $base-font-size) *
                    1em; /* 1 */
            } @else {
                line-height: 1.15; /* 1 */
            }

            margin: 0; /* 2 */
        }

        /**
     * Show the overflow in IE.
     */

        button {
            overflow: visible;
        }

        /**
     * Remove the inheritance of text transform in Edge, Firefox, and IE.
     * 1. Remove the inheritance of text transform in Firefox.
     */

        button,
        select {
            /* 1 */
            text-transform: none;
        }

        /**
     * 1. Prevent a WebKit bug where (2) destroys native `audio` and `video`
     *    controls in Android 4.
     * 2. Correct the inability to style clickable types in iOS and Safari.
     */

        button,
    html [type="button"], /* 1 */
    [type="reset"],
    [type="submit"] {
            appearance: button; /* 2 */
        }

        button,
        [type='button'],
        [type='reset'],
        [type='submit'] {
            /**
       * Remove the inner border and padding in Firefox.
       */

            &::-moz-focus-inner {
                border-style: none;
                padding: 0;
            }

            /**
       * Restore the focus styles unset by the previous rule.
       */

            &:-moz-focusring {
                outline: 1px dotted ButtonText;
            }
        }

        /**
     * Show the overflow in Edge.
     */

        input {
            overflow: visible;
        }

        /**
     * 1. Add the correct box sizing in IE 10-.
     * 2. Remove the padding in IE 10-.
     */

        [type='checkbox'],
        [type='radio'] {
            box-sizing: border-box; /* 1 */
            padding: 0; /* 2 */
        }

        /**
     * Correct the cursor style of increment and decrement buttons in Chrome.
     */

        [type='number']::-webkit-inner-spin-button,
        [type='number']::-webkit-outer-spin-button {
            height: auto;
        }

        /**
     * 1. Correct the odd appearance in Chrome and Safari.
     * 2. Correct the outline style in Safari.
     */

        [type='search'] {
            appearance: textfield; /* 1 */
            outline-offset: -2px; /* 2 */

            /**
       * Remove the inner padding and cancel buttons in Chrome and Safari on macOS.
       */

            &::-webkit-search-cancel-button,
            &::-webkit-search-decoration {
                appearance: none;
            }
        }

        /**
     * 1. Correct the inability to style clickable types in iOS and Safari.
     * 2. Change font properties to `inherit` in Safari.
     */

        ::-webkit-file-upload-button {
            appearance: button; /* 1 */
            font: inherit; /* 2 */
        }

        /**
     * Correct the padding in Firefox.
     */

        fieldset {
            padding: 0.35em 0.75em 0.625em;
        }

        /**
     * 1. Correct the text wrapping in Edge and IE.
     * 2. Correct the color inheritance from `fieldset` elements in IE.
     * 3. Remove the padding so developers are not caught out when they zero out
     *    `fieldset` elements in all browsers.
     */

        legend {
            box-sizing: border-box; /* 1 */
            display: table; /* 1 */
            max-width: 100%; /* 1 */
            padding: 0; /* 3 */
            color: inherit; /* 2 */
            white-space: normal; /* 1 */
        }

        /**
     * 1. Add the correct display in IE 9-.
     * 2. Add the correct vertical alignment in Chrome, Firefox, and Opera.
     */

        progress {
            display: inline-block; /* 1 */
            vertical-align: baseline; /* 2 */
        }

        /**
     * Remove the default vertical scrollbar in IE.
     */

        textarea {
            overflow: auto;
        }
    }

    @if _normalize-include(interactive) {
        /* Interactive
       ========================================================================== */

        /*
     * Add the correct display in Edge, IE, and Firefox.
     */

        details {
            display: block;
        }

        /*
     * Add the correct display in all browsers.
     */

        summary {
            display: list-item;
        }

        /*
     * Add the correct display in IE 9-.
     */

        menu {
            display: block;

            @if $normalize-vertical-rhythm {
                /*
         * 1. Set 1 unit of vertical rhythm on the top and bottom margin.
         * 2. Set consistent space for the list style image.
         */

                @include normalize-margin(1 0); /* 1 */

                padding: 0 0 0 $indent-amount; /* 2 */

                /**
         * Turn off margins on nested lists.
         */

                menu &,
                ol &,
                ul & {
                    margin: 0;
                }
            }
        }
    }

    @if _normalize-include(scripting) {
        /* Scripting
       ========================================================================== */

        /**
     * Add the correct display in IE 9-.
     */

        canvas {
            display: inline-block;
        }

        /**
     * Add the correct display in IE.
     */

        template {
            display: none;
        }
    }

    @if _normalize-include(hidden) {
        /* Hidden
       ========================================================================== */

        /**
     * Add the correct display in IE 10-.
     */

        [hidden] {
            display: none;
        }
    }
}