/* ==========================================================================
    Generic / Normalize
========================================================================== */

/**
 * Normalization of HTML elements, manually forked from Normalize.css to remove
 * styles targeting irrelevant browsers while applying new styles.
 * Normalize is licensed MIT. https://github.com/necolas/normalize.css
 */

/**
 * Document
 *
 * Change from `box-sizing: content-box` so that `width` is not affected by `padding` or `border`.
 */
*,
*::before,
*::after {
    box-sizing: border-box;
}

/**
 * Body
 *
 * 1. Prevent adjustments of font size after orientation changes in iOS.
 * 2. Change the default tap highlight to be completely transparent in iOS.
 */
body {
    width: 100%;
    height: 100%;
    padding: 0;
    margin: 0;
    text-align: left;
    -webkit-text-size-adjust: 100%; // 1
    -webkit-tap-highlight-color: rgba(var(--black), 0); // 2
}

/**
 * Future-proof rule: in browsers that support :focus-visible, suppress the focus outline
 * on elements that programmatically receive focus but wouldn't normally show a visible
 * focus outline. In general, this would mean that the outline is only applied if the
 * interaction that led to the element receiving programmatic focus was a keyboard interaction,
 * or the browser has somehow determined that the user is primarily a keyboard user and/or
 * wants focus outlines to always be presented.
 * See https://developer.mozilla.org/en-US/docs/Web/CSS/:focus-visible
 * and https://developer.paciellogroup.com/blog/2018/03/focus-visible-and-backwards-compatibility/
 */
[tabindex='-1']:focus:not(:focus-visible) {
    outline: 0 !important;
}

/**
 * Content grouping
 * 
 * 1. Set correct height and prevent the `size` attribute to make the `hr` look like an input field
 *    See https://www.w3schools.com/tags/tryit.asp?filename=tryhtml_hr_size
 */
hr {
    margin: 15px 0;
    border: 0;
    opacity: 1;
}

hr:not([size]) {
    height: 2px; // 1
}

/**
 * Typography
 * 
 * 1. Remove top margins from headings
 *    By default, `<h1>`-`<h6>` all receive top and bottom margins. We nuke the top
 *    margin for easier control within type scales as it avoids margin collapsing.
 */
%heading {
    margin-top: 0; // 1
    margin-bottom: 1em;
}

h1 {
    @extend %heading;
}

h2 {
    @extend %heading;
}

h3 {
    @extend %heading;
}

h4 {
    @extend %heading;
}

h5 {
    @extend %heading;
}

h6 {
    @extend %heading;
}

/**
 * Reset margins on paragraphs
 *
 * Similarly, the top margin on `<p>`s get reset. However, we also reset the
 * bottom margin to use `rem` units instead of `em`.
 */
p {
    margin-top: 0;
    margin-bottom: 1.5em;
}

/**
 * Abbreviations
 * 
 * 1. Duplicate behavior to the data-* attribute for our tooltip plugin
 * 2. Add the correct text decoration in Chrome, Edge, Opera, and Safari.
 * 3. Add explicit cursor to indicate changed behavior.
 * 4. Prevent the text-decoration to be skipped.
 */
abbr[title],
abbr[data-original-title] {
    // 1
    text-decoration: underline; // 2
    text-decoration: underline dotted; // 2
    cursor: help; // 3
    text-decoration-skip-ink: none; // 4
}

/**
 * Address
 */
address {
    margin-bottom: 1rem;
    font-style: normal;
    line-height: inherit;
}

/**
 * Lists
 * 1. Undo browser default
 */
ol,
ul {
    padding-left: 2rem;
}

ol,
ul,
dl {
    margin-top: 0;
    margin-bottom: 1rem;
}

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

dt {
    font-weight: var(--font-bold);
}

dd {
    margin-bottom: 0.5rem;
    margin-left: 0; // 1
}

/**
 * Blockquote
 */
blockquote {
    margin: 0 0 1rem;
}

/**
 * Blockquote
 * Add the correct font weight in Chrome, Edge, and Safari
 */
b,
strong {
    font-weight: var(--font-bold);
}

/**
 * Small
 * Add the correct font size in all browsers
 */
small {
    font-size: 0.7rem;
}

/**
 * Mark
 */
mark {
    padding: 2px;
    background-color: var(--gray-400);
}

/**
 * Sub and Sup
 * Prevent `sub` and `sup` elements from affecting the line height in all browsers.
 */
sub,
sup {
    position: relative;
    font-size: 0.3rem;
    line-height: 0;
    vertical-align: baseline;
}

sub {
    bottom: -0.25em;
}
sup {
    top: -0.5em;
}

/**
 * Links
 */
a {
    text-decoration: none;

    &:hover {
        text-decoration: none;
    }
}

/**
 * And undo these styles for placeholder links/named anchors (without href).
 * It would be more straightforward to just use a[href] in previous block, but that
 * causes specificity issues in many other styles that are too complex to fix.
 * See https://github.com/twbs/bootstrap/issues/19402
 */
a:not([href]):not([class]) {
    &,
    &:hover {
        color: inherit;
        text-decoration: none;
    }
}

/**
 * Code
 * 1. Remove browser default top margin
 * 2. Reset browser default of `1em` to use `rem`s
 * 3. Don't allow content to break outside
 * 4. Disable auto-hiding scrollbar in legacy Edge to avoid overlap,
 *    making it impossible to interact with the content
 */
pre,
code,
kbd,
samp {
    font-family: 'Lucida Console', Courier, monospace;
    font-size: 1em;
}

pre {
    display: block;
    margin-top: 0; // 1
    margin-bottom: 1rem; // 2
    overflow: auto; // 3
    font-size: 0.8rem;
    color: var(--primary-dark);
    -ms-overflow-style: scrollbar; // 4

    /* Account for some code outputs that place code tags in pre tags */
    code {
        font-size: inherit;
        color: inherit;
        word-break: normal;
    }
}

code {
    font-size: 0.8rem;
    color: var(--primary-dark);
    word-wrap: break-word;

    /* Streamline the style when inside anchors to avoid broken underline and more */
    a > & {
        color: inherit;
    }
}

kbd {
    padding: 10px;
    font-size: 1rem;
    color: currentColor;
    background-color: var(--gray-400);
    border-radius: 1em;

    kbd {
        padding: 0;
        font-size: 1em;
        font-weight: var(--font-light);
    }
}

/**
 * Figures
 * Apply a consistent margin strategy (matches our type styles).
 */
figure {
    margin: 0 0 1rem;
}

/**
 * Images and content
 */
img,
svg {
    vertical-align: middle;
}

/**
 * Tables
 * Prevent double borders
 * 1. Matches default `<td>` alignment by inheriting `text-align`.
 * 2. Fix alignment for Safari
 */
table {
    caption-side: bottom;
    border-collapse: collapse;
}

caption {
    padding-top: 15px;
    padding-bottom: 15px;
    color: var(--primary-dark);
    text-align: left;
}

th {
    text-align: inherit; // 1
    text-align: -webkit-match-parent; // 2
}

thead,
tbody,
tfoot,
tr,
td,
th {
    border-color: inherit;
    border-style: solid;
    border-width: 0;
}

/**
 * Forms
 * 1. Allow labels to use `margin` for u-Spacing.
 */
label {
    display: inline-block; // 1
}

/**
 * Remove the default `border-radius` that macOS Chrome adds.
 * See https://github.com/twbs/bootstrap/issues/24093 
 */
button {
    border-radius: 0;
}

/**
 * Remove default style
 */
button {
    background: none;
    border: none;
    padding: 0;
    text-decoration: none;
    vertical-align: middle;
    outline: none !important;
}

/**
 * Work around a Firefox bug where the transparent `button` background
 * results in a loss of the default `button` focus styles.
 * Credit https://github.com/suitcss/base/
 * 1. Remove the margin in Firefox and Safari
 */
button:focus {
    outline: 1px dotted;
    outline: 5px auto -webkit-focus-ring-color;
}

input,
button,
select,
optgroup,
textarea {
    margin: 0; // 1
    font-family: inherit;
    font-size: inherit;
    line-height: inherit;
}

/* Show the overflow in Edge */
button,
input {
    overflow: visible;
}

/* Remove the inheritance of text transform in Firefox */
button,
select {
    text-transform: none;
}

/**
 * Set the cursor for non-`<button>` buttons
 *
 * Details at https://github.com/twbs/bootstrap/pull/30562
 */
[role='button'] {
    cursor: pointer;
}

/**
 * Remove the inheritance of word-wrap in Safari.
 *
 * See https://github.com/twbs/bootstrap/issues/24990
 */
select {
    word-wrap: normal;
    color: inherit;
}

/**
 * Remove the dropdown arrow in Chrome from inputs built with datalists.
 *
 * See https://stackoverflow.com/a/54997118
 */
[list]::-webkit-calendar-picker-indicator {
    display: 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.
 * 3. Opinionated: add "hand" cursor to non-disabled button elements.
 */
button,
[type="button"], // 1
[type="reset"],
[type="submit"] {
    -webkit-appearance: button; // 2

    &:not(:disabled) {
        cursor: pointer; // 3
    }
}

/* Remove inner border and padding from Firefox, but don't restore the outline like Normalize. */
::-moz-focus-inner {
    padding: 0;
    border-style: none;
}

/* 1. Textareas should really only resize vertically so they don't break their (horizontal) containers. */
textarea {
    resize: vertical; // 1
}

/**
 * 1. Browsers set a default `min-width: min-content;` on fieldsets,
 *    unlike e.g. `<div>`s, which have `min-width: 0;` by default.
 *    So we reset that to ensure fieldsets behave more like a standard block element.
 *    See https://github.com/twbs/bootstrap/issues/12359
 *    and https://html.spec.whatwg.org/multipage/#the-fieldset-and-legend-elements
 * 2. Reset the default outline behavior of fieldsets so they don't affect page layout.
 */
fieldset {
    min-width: 0; // 1
    padding: 0; // 2
    margin: 0; // 2
    border: 0; // 2
}

/**
 * 1. By using `float: left`, the legend will behave like a block element.
 *    This way the border of a fieldset wraps around the legend if present.
 * 2. Correct the text wrapping in Edge.
 * 3. Fix wrapping bug.
 *    See https://github.com/twbs/bootstrap/issues/29712
 */
legend {
    float: left; // 1
    width: 100%;
    padding: 0;
    margin-bottom: 25px;
    font-size: 0.65rem;
    font-weight: var(--font-light);
    line-height: inherit;
    white-space: normal; // 2

    + * {
        clear: left; // 3
    }
}

/**
 * Fix height of inputs with a type of datetime-local, date, month, week, or time
 * See https://github.com/twbs/bootstrap/issues/18842
 */
::-webkit-datetime-edit-fields-wrapper,
::-webkit-datetime-edit-text,
::-webkit-datetime-edit-minute,
::-webkit-datetime-edit-hour-field,
::-webkit-datetime-edit-day-field,
::-webkit-datetime-edit-month-field,
::-webkit-datetime-edit-year-field {
    padding: 0;
}

::-webkit-inner-spin-button {
    height: auto;
}

/**
 * 1. Correct the outline style in Safari.
 * 2. This overrides the extra rounded corners on search inputs in iOS so that our
 *    `.form-control` class can properly style them. Note that this cannot simply
 *    be added to `.form-control` as it's not specific enough. For details, see
 *    https://github.com/twbs/bootstrap/issues/11586.
 */
[type='search'] {
    outline-offset: -2px; // 1
    -webkit-appearance: textfield; // 2
}

/* Remove the inner padding in Chrome and Safari on macOS. */
::-webkit-search-decoration {
    -webkit-appearance: none;
}

/* Remove padding around color pickers in webkit browsers */
::-webkit-color-swatch-wrapper {
    padding: 0;
}

/**
 * 1. Change font properties to `inherit` in Safari.
 * 2. Correct the inability to style clickable types in iOS and Safari.
 */
::-webkit-file-upload-button {
    font: inherit; // 1
    -webkit-appearance: button; // 2
}

/* Correct element displays */
output {
    display: inline-block;
}

/* Remove border from iframe */
iframe {
    border: 0;
}

/**
 * Summary
 * 
 * 1. Add the correct display in all browsers
 */
summary {
    display: list-item; // 1
    cursor: pointer;
}

/**
 * Progress
 * 
 * Add the correct vertical alignment in Chrome, Firefox, and Opera.
 */
progress {
    vertical-align: baseline;
}

/**
 * Hidden attribute
 * 
 * Always hide an element with the `hidden` HTML attribute.
 */
[hidden] {
    display: none !important;
}
