/* ------------------------------------ *\
    https://codepen.io/mikemai2awesome/full/KKvMZVz
\* ------------------------------------ */
  
:root {
    color: var(--text);
    background-color: var(--background);
    accent-color: var(--text);
  }
    
  :where(a) {
    color: var(--text);
  }
    
  :where(input, textarea, select) {
    color: var(--text);
    background-color: var(--background);
  }
    
  :where(button, .btn) {
    color: var(--primary-light);
    background-color: var(--text);
  }
    
  :where(code) {
    color: var(--text);
    background-color: var(--primary-dark);
  }
    
  /* ------------------------------------ *\
      Typography
  \* ------------------------------------ */
    
  :root {
    font-size: clamp(
      var(--font-size),
      var(--font-size) * 0.9 + 0.25vw,
      var(--font-size) * 2
    ); // % ensures browser zoom is supported. 
    font-family: var(--font); // Use system UI font. 
    font-weight: var(--font-weight-regular);
    line-height: var(--leading); // Standard leading for good legibility. 
    letter-spacing: var(--tracking);
  }
    
  :where(a) {
    text-decoration: underline;
    text-decoration-thickness: var(--border-width);
    text-underline-offset: calc(var(--border-width) * 2);
  }
    
  :where(a):hover {
    text-decoration-thickness: calc(var(--border-width) * 2);
  }
    
  :where(pre, code, kbd, dl, figcaption, abbr, table) {
    font-family: var(--font-code); // Differentiate preformatted, code, description, and table text from body text. 
    font-size: 0.8em; // Make monospace and small text smaller than body text. 
  }
    
  :where(pre code) {
    display: block; // Define block code.
    font-size: 1em; // Prevent cascading.
  }
    
  :where(blockquote, em, i, cite) {
    font-family: var(--font-italic); // Differentiate blockquote, citation, idiomatic, and emphasisized text from body text. Also, sans-serif italic is ugly.
    font-weight: var(--font-weight-regular); // Prevent italics to be bold. Bold italic is also ugly and unnecessary.
  }
    
  :where(blockquote) {
    font-size: clamp(1.5rem, 1.25rem + 1vw, 3rem);
    letter-spacing: 0;
  }
    
  :where(blockquote p) {
    max-inline-size: 35ch;
  }
    
  :where(blockquote q):before {
    position: absolute;
    transform: translateX(-100%);
  }
    
  :where(strong, b, th, button, .btn) {
    font-weight: var(--font-weight-semibold); // Make non-heading emphasized text less bold than heading text.
  }
    
  :where(h1, h2, h3, h4, h5, h6, summary strong, legend) {
    font-weight: var(--font-weight-semibold);
  }
    
  :where(h1, h2, h3, h4, h5, h6, summary strong, legend) {
    font-stretch: var(--font-stretch, expanded);
  }
    
  :where(button, .btn, input[type="file"]) {
    font-stretch: var(--font-stretch, condensed);
  }
    
  :where(abbr) {
    text-decoration: underline;
    text-decoration-style: dotted; // Differentiate abbreviaions from links.
    text-underline-offset: calc(var(--border-width) * 2);
  }
    
  :where(button, label, select, summary) {
    cursor: pointer;
  }
    
  :where(summary:hover > *) {
    text-decoration: underline;
    text-underline-offset: calc(var(--border-width) * 2);
  }
    
  :where(figcaption) {
    text-align: center;
  }
    
  :where(th) {
    text-align: start;
  }
    
  :where(th, td) {
    vertical-align: baseline;
  }
    
  :where(fieldset > ol) {
    list-style: none;
  }
    
  /* ------------------------------------ *\
      Spacing
  \* ------------------------------------ */
    
  :where(h1, h2, h3, h4, h5, h6, p, figure, form, pre, blockquote, ul, ol, dl, li, details) {
    margin-block-end: 0;
  }
    
  :where(h1, h2, h3, h4, h5, h6) {
    margin-block-start: calc(var(--stack) * 1.75);
  }
  
  :where(p, figure, form, fieldset, pre, blockquote, ul, ol, dl, details) {
    margin-inline: 0;
    margin-block-start: var(--stack);
  }
  
  :where(h1, h2, h3, h4, h5, h6, p, figure, form, fieldset, pre, blockquote, ul, ol, dl, details):first-child,
  :where(legend + *) {
    margin-block-start: 0;
  }
  
  :where(h1, h2, h3, h4, h5, h6) + * {
    margin-block-start: calc(var(--stack) / 5);
  }
    
  :where(ul, ol) {
    padding: 0;
  }
    
  :where(li > ul, li > ol) {
    margin-block-start: calc(var(--stack) / 5);
  }
  
  :where(details ul, details ol) {
    margin-inline-start: 4ch; // Unify indent for all lists inside details.
  }
  
  :where(li > ul, li > ol, fieldset ul, fieldset ol) {
    margin-inline-start: 2.25ch; // Unify indent for all nested lists.
  }
  
  :where(li + li) {
    margin-block-start: calc(var(--stack) / 5);
  }
  
  :where(fieldset > ol li + li) {
    margin-block-start: calc(var(--stack) / 2);
  }
  
  :where(fieldset > ol) {
    margin-inline: 0;
  }
  
  :where(hr) {
    margin-block-start: calc(var(--stack) * 3);
    margin-block-end: calc(var(--stack) * 3);
  }
  
  :where(hr + *) {
    margin-block-start: 0;
  }
  
  :where(figure > img, table) {
    margin-inline: auto;
  }
  
  :where(blockquote > *) {
    margin-block-start: calc(var(--stack) / 4);
  }
  
  :where(blockquote:not(:last-child)) {
    padding-block-end: calc(var(--stack) / 2);
  }
  
  :where(button, .btn, dd, th, td) {
    // Unify inset spacing on bordered elements.
    padding-block: calc(var(--stack) / 6);
    padding-inline: calc(var(--gutter) / 3);
  }
  
  :where(input, textarea) {
    padding-inline: 2px;
  }
  
  :where(caption, figcaption) {
    padding-block: calc(var(--stack) / 2);
  }
  
  :where(code, kbd) {
    padding-block: 0.25ex;
    padding-inline: 0.5ch;
  }
  
  :where(figure, pre) {
    padding-block-start: calc(
      var(--stack) / 2.5
    ); // Line up top of images/codeblocks with text in an adjacent column layout.
  }
  
  :where(pre) {
    padding-block-end: calc(var(--stack) / 2.5);
  }
  
  :where(pre code) {
    padding-block: var(--stack);
    padding-inline: var(--gutter);
  }
  
  details[open] summary + * {
    margin-block-start: calc(var(--stack) / 4);
  }
    
  /* ------------------------------------ *\
      General
  \* ------------------------------------ */
    
  *,
  *:before,
  *:after {
    font-feature-settings: "kern";
    font-kerning: normal;
    -moz-osx-font-smoothing: grayscale !important;
    -webkit-font-smoothing: antialiased !important;
    box-sizing: border-box;
  }
  
  :where(input, textarea, select, fieldset, button, kbd, dd, table, th, td) {
    // Unify border styles.
    border: var(--border-width) solid var(--text);
  }
  
  :where(input, textarea, select, fieldset, button, .btn, kbd) {
    // Unify interactive elements border radius.
    border-radius: var(--border-radius);
  }
  
  :where(pre) {
    white-space: -moz-pre-wrap;
    white-space: -o-pre-wrap;
    white-space: pre-wrap;
    word-spacing: normal;
    word-break: normal;
    word-wrap: break-word;
  }
  
  :where(dl) {
    display: grid;
    grid-template-columns: auto minmax(75%, 1fr);
    gap: calc(var(--gutter) / 2);
    align-items: baseline;
  }
  
  :where(dt) {
    border-block-end: var(--border-width) dotted;
  }
  
  :where(dd) {
    block-size: 100%;
    margin-inline-start: 0;
  }
  
  :where(input:not([type="checkbox"]):not([type="radio"]), select, textarea) {
    display: block;
    inline-size: 100%;
  }
  
  :where(input[type="radio"], input[type="checkbox"]) {
    size: 1.5ex;
    vertical-align: baseline;
  }
  
  :where(input[type="file"]) {
    padding-inline: 0;
    border: 0;
  }
  
  ::-webkit-file-upload-button {
    appearance: button;
    cursor: pointer;
    font: inherit;
  }
  
  :where(input, textarea, select) ~ * {
    margin-block-start: 0;
    font-size: 0.8em;
  }
  
  :where(input:required + mark) {
    display: none;
    color: var(--text);
    background-color: transparent;
  }
  
  :where(input:required:invalid + mark) {
    display: block;
  }
  
  :where(hr) {
    block-size: 0;
    border: 0;
    border-block-start: var(--border-width) dashed var(--text);
  }
  
  :where(figure, figure table) {
    inline-size: 100%;
  }
  
  :where(figure) {
    overflow-x: auto;
  }
  
  :where(figure > img) {
    display: block;
  }
  
  :where(table) {
    caption-side: bottom;
    border-collapse: collapse;
    border-spacing: 0;
  }
  
  :where(tr > *:first-child) {
    white-space: nowrap;
  }
  
  :where(summary > *) {
    display: inline;
    vertical-align: middle;
  }
    
  /* ------------------------------------ *\
      Add-ons
      - Requires data attributes.
      - Remove to do your own layouts.
  \* ------------------------------------ */
  
  :where(body main) {
    padding-block-start: clamp(var(--stack) * 1, 10vmax, var(--stack) * 2);
  }