:root {
  color-scheme: dark light;
  --primary-label: white;
  --secondary-label: #ebebf599;
  --tertiary-label: #ebebf57f;
  --primary-background: black;
  --secondary-background: #1c1c1e;
  --tertiary-background: #2c2c2e;
  --primary-background: #1c1c1e;
  --secondary-background: #2c2c2e;
  --tertiary-background: #000000;
  --separator-color: #54545899;
  --tint-color: #ffcc00;
  --info-color: #006bdf;
  --code-block-background: #29292c;
  --code-block-label: rgb(235, 235, 245);
  --hairline: 1px;
  --content-padding-x: 12px;
  --content-width: calc(
    100vw - var(--content-padding-x) - var(--content-padding-x)
  );
}

@media (prefers-color-scheme: light) {
  :root {
    --primary-label: black;
    --secondary-label: #3c3c43;
    --tertiary-label: #3c3c4399;
    --primary-background: white;
    --secondary-background: #f2f2f7;
    --tertiary-background: white;
    --separator-color: #3c3c4349;
    --tint-color: #006bdf;
    --code-block-background: #78788033;
  }
}

@media (min-width: 480px) {
  :root {
    --content-padding-x: calc(5vw);
  }
}

@media (min-width: 1024px) {
  :root {
    --content-padding-x: calc(10vw);
  }
}

@media (min-resolution: 2dppx) {
  :root {
    --hairline: 0.5px;
  }
}

@media (min-resolution: 3dppx) {
  :root {
    --hairline: 0.33px;
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  margin: 0;
}

html {
  min-height: -webkit-fill-available;
  background: var(--primary-background);
  /* I think this used to be set later, e.g. at the end of the HTML, which would allow the background to be dark while loading but then apply a background that aligns with the header when over scrolling. */
  background: var(--tint-color);
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue",
    "Noto Sans", "Liberation Sans", Arial, sans-serif, "Apple Color Emoji",
    "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  background: var(--primary-background);
  color: var(--primary-label);
  min-height: -webkit-fill-available;
  min-height: 100vh;
  display: flex;
  font-size: 17px;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}
input,
button,
textarea,
select {
  font: inherit;
}

body {
  display: flex;
  flex-direction: column;
  background: var(--primary-background);
}

#skip-to-content {
    background: var(--secondary-background);
    padding: 8px;
    position: absolute;
    transform: translateY(-100%);
    border-bottom-right-radius: 6px;
}

#skip-to-content:focus {
    transform: translateY(0%);
}

main {
    width: var(--content-width);
    margin: 0 auto;
    flex: 1;
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
  display: flex;
  flex-direction: column;
}

a {
  color: var(--tint-color);
  text-decoration: none;
}

a:hover {
  text-decoration: underline !important;
}

main a:hover {
  color: var(--tint-color);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 500;
  line-height: 1.2;
  margin-bottom: 8px;
}

h1 {
  font-size: 2rem;
}
@media (min-width: 1200px) {
  h1 {
    font-size: 2.5rem;
  }
}

h2 {
  font-size: 1.5rem;
}
@media (min-width: 1200px) {
  h2 {
    font-size: 2rem;
  }
}

h3 {
  font-size: 1.25rem;
}
@media (min-width: 1200px) {
  h3 {
    font-size: 1.75rem;
  }
}

h4 {
  font-size: 1rem;
}
@media (min-width: 1200px) {
  h4 {
    font-size: 1.5rem;
  }
}

h5 {
  font-size: 1.25rem;
}

h6 {
  font-size: 1rem;
}

p {
  margin-bottom: 16px;
}

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

ol,
ul {
  padding-left: 2rem;
}

code {
  padding: 1px 0.4em;
  border-radius: 3px;
  background-color: var(--code-block-background);
}

pre {
  overflow: scroll;
  display: block;
  margin-top: 0;
  margin-bottom: 1rem;
  /* font-size: 0.875em; */
}

pre code {
  padding: unset;
  background-color: unset;
}

blockquote {
  border-left: 0.25em solid #7878805b;
  font-style: italic;
  background-color: var(--code-block-background);
  color: var(--code-block-label);
  padding: 1em;
  margin-bottom: 16px;
}

blockquote > :last-child {
  margin-bottom: 0;
}

details {
  margin-bottom: 1em;
}

iframe {
    border: none;
}

img {
  max-width: 100%;
}

table {
  table-layout: fixed;
  border-collapse: collapse;
  margin-bottom: 1em;
}

th,
td {
  padding: 0.1em 0.6em;
  border: 1px solid var(--separator-color);
}

td ul {
  margin-bottom: 0;
}

@media (prefers-color-scheme: light) {
  blockquote {
    border-left: 0.25em solid #78788033;
    color: #6a737d;
  }
}

.markdown-alert {
  --color-border-default: #30363d;
  --color-accent-fg: #58a6ff;
  --color-accent-emphasis: #1f6feb;
  --color-danger-fg: #f85149;
  --color-danger-emphasis: #da3633;
  --color-attention-fg: #d29922;
  --color-attention-emphasis: #9e6a03;
  --color-done-fg: #a371f7;
  --color-done-emphasis: #8957e5;
  --color-success-fg: #3fb950;
  --color-success-emphasis: #238636;
}

@media (prefers-color-scheme: light) {
  .markdown-alert {
    --color-border-default: #d0d7de;
    --color-accent-fg: #0969da;
    --color-accent-emphasis: #0969da;
    --color-danger-fg: #d1242f;
    --color-danger-emphasis: #cf222e;
    --color-attention-fg: #9a6700;
    --color-attention-emphasis: #9a6700;
    --color-done-fg: #8250df;
    --color-done-emphasis: #8250df;
    --color-success-fg: #1a7f37;
    --color-success-emphasis: #1f883d;
  }
}

.markdown-alert {
  border-left: 0.25em solid
    var(--borderColor-default, var(--color-border-default));
  color: var(--code-block-label);
  margin-bottom: 16px;
  padding: 1em;
  background-color: var(--code-block-background);
}
.markdown-alert > :last-child {
  margin-bottom: 0 !important;
}
.markdown-alert .markdown-alert-title {
  align-items: center;
  display: flex;
  font-size: 14px;
  font-weight: bold;
  line-height: 1;
  margin-bottom: 0.6em;
}
.markdown-alert .markdown-alert-title svg.octicon {
  margin-right: 8px !important;
  margin-right: var(--base-size-8, 8px) !important;
  fill: currentColor;
}
.markdown-alert.markdown-alert-note {
  border-left-color: var(
    --borderColor-accent-emphasis,
    var(--color-accent-emphasis)
  );
}
.markdown-alert.markdown-alert-note .markdown-alert-title {
  color: var(--color-accent-fg);
  color: var(--fgColor-accent, var(--color-accent-fg));
}
.markdown-alert.markdown-alert-tip {
  border-left-color: var(
    --borderColor-success-emphasis,
    var(--color-success-emphasis)
  );
}
.markdown-alert.markdown-alert-tip .markdown-alert-title {
  color: var(--color-success-fg);
  color: var(--fgColor-success, var(--color-success-fg));
}
.markdown-alert.markdown-alert-important {
  border-left-color: var(
    --borderColor-done-emphasis,
    var(--color-done-emphasis)
  );
}
.markdown-alert.markdown-alert-important .markdown-alert-title {
  color: var(--color-done-fg);
  color: var(--fgColor-done, var(--color-done-fg));
}
.markdown-alert.markdown-alert-warning {
  border-left-color: var(
    --borderColor-attention-emphasis,
    var(--color-attention-emphasis)
  );
}
.markdown-alert.markdown-alert-warning .markdown-alert-title {
  color: var(--color-attention-fg);
  color: var(--fgColor-attention, var(--color-attention-fg));
}
.markdown-alert.markdown-alert-caution {
  border-left-color: var(
    --borderColor-danger-emphasis,
    var(--color-danger-emphasis)
  );
}
.markdown-alert.markdown-alert-caution .markdown-alert-title {
  color: var(--color-danger-fg);
  color: var(--fgColor-danger, var(--color-danger-fg));
}

/* Article */

article .youtube-embed {
    max-width: 100%;
    height: auto;
}

.aspect-ratio-4-3 {
    aspect-ratio: 4/3;
}

.aspect-ratio-16-9 {
    aspect-ratio: 16/9;
}

/* Header */

#header {
    width: 100vw;
    display: flex;
    flex-direction: column;
    background: var(--tint-color);
    margin-bottom: 12px;
}

#header nav {
    align-self: center;
    overflow-x: scroll;
    max-width: 100%;
    display: inline-flex;
    white-space: nowrap;
}

#header nav a {
    padding: 12px;
    font-size: 1.5em;
    color: var(--primary-background);
    font-weight: 500;
    display: inline-block;
}

#header nav a:hover {
    background: #e6b801;
    text-decoration: none !important;
}

#header nav a:first-child {
    margin-left: 0;
}

#header nav a:last-child {
    margin-right: 0;
}

/* Footer */

#footer {
    width: 100vw;
    display: flex;
    flex-direction: column;
    padding-bottom: max(12px, env(safe-area-inset-bottom));
    font-size: 0.8em;
    background: var(--tint-color);
    color: var(--primary-background);
    margin-top: 12px;
    align-items: center;
}

#footer .copyright,
#footer .build-metadata {
    width: var(--content-width);
    margin: 0 auto;
    text-align: center;
}

#footer nav {
    white-space: nowrap;
    margin: 12px 6px;
}

#footer nav a {
    margin: 6px;
}

#footer a {
    text-decoration: underline;
    color: var(--primary-background);
}