@layer base {

  html {
    font-size: 100%;
  }

  body {
    -moz-osx-font-smoothing: grayscale;
    -webkit-font-smoothing: antialiased;
    -webkit-text-size-adjust: none;
    background: var(--color-canvas);
    color: var(--color-ink);
    font-family: var(--font-sans);
    interpolate-size: allow-keywords;
    line-height: 1.5;
    max-inline-size: 100vw;
    scroll-behavior: auto;
    text-rendering: optimizeLegibility;
    text-size-adjust: none;
  }

  h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-sans);
    font-weight: bold;
    line-height: 1.2;
    margin-block: 1.5em 0.5em;
  }

  :is(h1, h2, h3, h4, h5, h6):first-child {
    margin-block-start: 0;
  }

  h1 { font-size: var(--text-xx-large); }
  h2 { font-size: var(--text-x-large); }
  h3 { font-size: var(--text-large); }
  h4 { font-size: var(--text-medium); }
  h5 { font-size: var(--text-normal); }
  h6 { font-size: var(--text-small); text-transform: uppercase; letter-spacing: 0.06em; }

  p, ul, ol, dl, figure, pre, blockquote, table {
    margin-block: 0 var(--block-space);
  }

  :is(p, ul, ol, dl, figure, pre, blockquote, table):last-child {
    margin-block-end: 0;
  }

  ul, ol {
    padding-inline-start: 1.5em;
  }

  li + li {
    margin-block-start: 0.25em;
  }

  header {
    margin-block-end: var(--block-space-double);
  }

  footer {
    margin-block-start: var(--block-space-double);
    color: var(--color-graphite);
  }

  a {
    text-decoration: none;

    &:not([class]) {
      color: var(--color-link);
      text-decoration: underline;
      text-decoration-skip-ink: auto;
    }
  }

  :is(a, button, input, textarea, .switch, .btn) {
    transition: 100ms ease-out;
    transition-property: background-color, border-color, box-shadow, filter, outline;
    touch-action: manipulation;

    /* Keyboard navigation */
    &:where(:focus-visible) {
      border-radius: 0.25ch;
      outline: var(--focus-ring-size) solid var(--focus-ring-color);
      outline-offset: var(--focus-ring-offset);
    }

    /* Default disabled styles */
    &:where([disabled]) {
      cursor: not-allowed;
      opacity: 0.5;
      pointer-events: none;
    }
  }

  ::selection {
    background: var(--color-selected);

    html[data-theme="dark"] & {
      background-color: var(--color-selected-dark);
    }

    @media (prefers-color-scheme: dark) {
      html:not([data-theme]) & {
        background-color: var(--color-selected-dark);
      }
    }
  }

  :where(ul, ol):where([role="list"]) {
    margin: 0;
    padding: 0;
    list-style: none;
  }

  kbd {
    border: 1px solid;
    border-radius: 0.3em;
    box-shadow: 0 0.1em 0 currentColor;
    font-family: var(--font-mono);
    font-size: 0.8em;
    font-weight: bold;
    opacity: 0.7;
    padding: 0 0.4em;
    text-transform: uppercase;
    vertical-align: middle;
    white-space: nowrap;
  }

  video {
    max-inline-size: 100%;
  }

  /* Bare form elements — sensible defaults without requiring a class */

  input:where(:not([type="checkbox"]):not([type="radio"]):not([type="range"]):not([type="hidden"])),
  textarea,
  select {
    background-color: var(--color-canvas);
    border: 1px solid var(--color-ink-light);
    border-radius: 0.5em;
    color: var(--color-ink);
    display: block;
    font: inherit;
    inline-size: 100%;
    max-inline-size: 100%;
    padding: 0.5em 0.8em;
  }

  textarea {
    resize: vertical;
  }

  textarea:not([rows]) {
    min-block-size: 8em;
  }

  select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='m12 19.5c-.7 0-1.3-.3-1.7-.8l-9.8-11.1c-.7-.8-.6-1.9.2-2.6.8-.6 1.9-.6 2.5.2l8.6 9.8c0 .1.2.1.4 0l8.6-9.8c.7-.8 1.8-.9 2.6-.2s.9 1.8.2 2.6l-9.8 11.1c-.4.5-1.1.8-1.7.8z' fill='%23363636'/%3E%3C/svg%3E");
    background-position: center right 0.8em;
    background-repeat: no-repeat;
    background-size: 0.5em;
    padding-inline-end: 2em;
  }

  input[type="checkbox"],
  input[type="radio"] {
    accent-color: var(--color-river);
    block-size: 1.15em;
    inline-size: 1.15em;
    margin: 0;
    vertical-align: middle;
  }

  ::placeholder {
    color: var(--color-ink-medium);
  }

  label {
    display: inline-block;
    font-weight: bold;
    margin-block-end: 0.25em;
  }

  label + label,
  input + label,
  textarea + label,
  select + label {
    margin-block-start: var(--block-space);
  }

  fieldset {
    border: 1px solid var(--color-ink-light);
    border-radius: 0.5em;
    margin: 0 0 var(--block-space);
    padding: var(--block-space) var(--inline-space-double);
  }

  legend {
    font-size: var(--text-small);
    font-weight: bold;
  }

  /* Tables */

  table {
    border-collapse: collapse;
    inline-size: 100%;
  }

  td, th {
    padding: 0.4em 0.6em;
    text-align: start;
    vertical-align: top;
    word-wrap: break-word;
  }

  th {
    font-weight: bold;
  }

  thead {
    border-block-end: 1px solid var(--color-ink-light);
  }

  tfoot {
    border-block-start: 1px solid var(--color-ink-light);
  }

  tbody tr:nth-child(even) {
    background-color: var(--color-ink-lightest);
  }

  /* Blockquotes */

  blockquote {
    border-inline-start: 4px solid var(--color-river-light);
    font-style: italic;
    padding: 0.5em 1em;
  }

  /* Code */

  code, samp {
    background-color: var(--color-ink-lightest);
    border-radius: 0.3em;
    font-family: var(--font-mono);
    font-size: 0.9em;
    padding: 0.15em 0.4em;
  }

  pre {
    background-color: var(--color-ink-lightest);
    border-radius: 0.5em;
    overflow-x: auto;
    padding: var(--block-space) var(--inline-space-double);

    > code {
      background-color: transparent;
      border-radius: 0;
      display: block;
      padding: 0;
    }
  }

  /* Horizontal rules */

  hr {
    border: none;
    border-block-start: 1px solid var(--color-ink-light);
    margin-block: var(--block-space);
  }

  /* Mark */

  mark {
    background-color: var(--color-highlight);
    border-radius: 0.2em;
    padding: 0 0.2em;
  }

  /* Details / Summary */

  details {
    background-color: var(--color-ink-lightest);
    border-radius: 0.5em;
    margin-block: var(--block-space);
    padding: 0;
  }

  details[open] {
    padding-block-end: var(--block-space);
  }

  summary {
    background-color: var(--color-dust);
    border-radius: 0.5em;
    cursor: pointer;
    font-weight: bold;
    padding: 0.6em 1em;
  }

  details[open] > summary {
    border-end-end-radius: 0;
    border-end-start-radius: 0;
    margin-block-end: var(--block-space-half);
  }

  details > :not(summary) {
    padding-inline: 1em;
  }

  /* Printing */
  @page {
    margin: 1in;
  }

  @media print {
    .no-print {
      display: none;
    }
  }

  /* Turbo */
  turbo-frame,
  turbo-cable-stream-source {
    display: contents;
  }

  .turbo-progress-bar {
    visibility: hidden;
  }

  /* Nicer scrollbars on Chrome 29+. This is intended for Windows machines, but */
  /* there's not a way to target Windows using CSS, so Chrome on Mac will have */
  /* slightly thinner scrollbars than normal. #C1C1C1 is the default color on Macs. */
  @media screen and (-webkit-min-device-pixel-ratio:0) and (min-resolution:.001dpcm) {
    * {
      scrollbar-color: #C1C1C1 transparent;
      scrollbar-width: thin;
    }
  }
}