:root {
  --color-black: #222;
  --color-white: #FFF;
  --color-gray-extra-light: #EEE;
  --color-gray-light: #CCC;
  --color-gray: #BBB;
  --color-gray-dark: #949494;
  --color-gray-extra-dark: #888;

  --color-primary: var(--color-black);
  --color-secondary: var(--color-white);
  --color-accent-extra-light: var(--color-gray-extra-light);
  --color-accent-light: var(--color-gray-light);
  --color-accent: var(--color-gray);
  --color-accent-dark: var(--color-gray-dark);
  --color-accent-extra-dark: var(--color-gray-extra-dark);

  --spacing-xs: 5px;
  --spacing-sm: 10px;
  --spacing-md: 15px;
  --spacing-lg: 30px;
  --spacing-xl: 40px;
  --spacing-xxl: 60px;

  --box-shadow: 0 5px 10px -1px rgba(0, 0, 0, 0.1);

  --container-max-width: 900px;
  --container-narrow-max-width: 700px;
  --container-extra-narrow-max-width: 600px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-primary: var(--color-white);
    --color-secondary: #333;
    --color-accent-extra-light: var(--color-black);
    --color-accent-light: var(--color-gray-extra-dark);
    --color-accent: var(--color-black);
    --color-accent-dark: var(--color-gray);
    --color-accent-extra-dark: var(--color-gray);
    --box-shadow: 0 5px 10px -1px rgba(0, 0, 0, 0.3);
  }
}

* {
  box-sizing: border-box;
}

*:focus {
  outline: 4px solid currentColor;
}

html,
body {
  height: 100%;
}

body {
  background-color: var(--color-secondary);
  color: var(--color-primary);
  line-height: 1.6;
  font-family: 'Nunito', sans-serif;
  margin: 0;
}

h1 {
  font-size: 2.5rem;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  line-height: 1.2;
}

p {
  margin: 0;
}

ol, ul {
  padding: 0;
}

hr {
  border: none;
  background: transparent;
  border-top: 2px solid currentColor;
  width: 5rem;
  margin: var(--spacing-lg) 0;
}

a {
  color: inherit;
  /*
    Don't skip underline for descenders on links by default.
    I think it makes it harder to tell where links start and end.
  */
  text-decoration-skip: none; /* Safari */
  text-decoration-skip-ink: none; /* Chrome and Firefox */
}

iframe {
  border: none;
}

figure {
  margin: 0;
}

table {
  border-collapse: collapse;
}

th {
  background-color: var(--color-primary);
  color: var(--color-secondary);
  border: 1px solid var(--color-primary);
}

th, td {
  padding: var(--spacing-xs) var(--spacing-sm);
}

td {
  border: 1px solid var(--color-accent-light);
}

tr {
  border: none;
  background-color: var(--color-secondary);
}

tr:nth-child(even) {
  background-color: var(--color-accent-extra-light);
}

.layout {
  min-height: 100%;
  display: flex;
  flex-direction: column;
}
.main {
  flex-grow: 1;
}



.banner {
  padding: var(--spacing-xxl) 0;
  margin-top: var(--spacing-xxl);
  background-color: var(--color-accent-extra-light);
  text-align: center;
}

.block-embed {

}

/* TODO: Use new CSS for aspect ratio? */
.block-embed-service-youtube {
  position: relative;
  padding-bottom: calc(100% * 9/16);
}

.block-embed iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.button {
  display: inline-block;
  text-align: center;
  text-decoration: none;
  font-weight: bold;
  padding: var(--spacing-xs) var(--spacing-md);
  background-color: transparent;
  color: currentColor;
  border: 2px solid currentColor;
  border-radius: var(--spacing-xs);
}

/* TODO: container query? */

.card {
  display: flex;
  flex-direction: column;
  height: 100%;
  text-align: center;
  background-color: var(--color-secondary);
  color: var(--color-primary);
  border-radius: var(--spacing-xs);
  overflow: hidden;
  text-decoration: none;
  border: 1px solid var(--color-accent-extra-light);
  box-shadow: var(--box-shadow);
  position: relative;
}
.card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(transparent 0, var(--color-primary) 80% 100%);
  max-height: 0;
  transition: 0.3s;
}
/** Override card-specific colour theme **/
.card:focus {
  outline-color: var(--color-black);
}
@media (prefers-color-scheme: dark) {
  .card:focus {
    outline-color: var(--color-white);
  }
}
.card:hover .card-text,
.card:focus .card-text {
  color: var(--color-secondary);
}
.card:hover::after,
.card:focus::after {
  max-height: 100%;
}
.card-text {
  flex-grow: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: var(--spacing-md);
  transition: 0.3s;
  position: relative;
  z-index: 1;
}

.image-wrapper {
  position: relative;
  background-color: var(--color-accent);
}
.image-wrapper img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}
.cover {
  margin-bottom: var(--spacing-xxl);
  width: 100%;
}
.cover-image {
  border-radius: var(--spacing-xs);
  box-shadow: var(--box-shadow);
  border: 1px solid var(--color-accent-extra-light);
  overflow: hidden;
  width: 100%;
}
.cover-caption {
  margin-top: var(--spacing-md);
  font-size: smaller;
  color: var(--color-accent-extra-dark);
}

.excerpt {
  padding: var(--spacing-lg);
  box-shadow: var(--box-shadow);
  border: 1px solid var(--color-accent-extra-light);
  border-radius: var(--spacing-xs);
}

.footer {
  padding: var(--spacing-xxl) 0 var(--spacing-lg);
  text-align: center;
}

.grid {
  display: grid;
  grid-template-columns: 1fr;
  grid-gap: var(--grid-gap);
}
@media only screen and (min-width: 500px) {
  .grid {
    grid-template-columns: repeat(var(--grid-columns), 1fr);
  }
}

.header {
  background: var(--color-secondary);
  border-bottom: 1px solid var(--color-accent-extra-light);
  position: sticky;
  top: 0;
  width: 100%;
  z-index: 5;
}
.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo {
  font-size: 250%;
  line-height: 1;
  font-weight: bold;
}
.nav {
}
.nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
}
.nav a {
  display: block;
  padding: var(--spacing-md);
  font-weight: bold;
  text-transform: lowercase;
  display: flex;
  border: 4px solid transparent;
  border-left: none;
  border-right: none;
}
.nav a.active {
  border-bottom-color: var(--color-accent-light);
}
.nav a[href="/"].active:not(.active--exact) {
  border-color: transparent;
}
.header a {
  text-decoration: none;
}

.intro {
  text-align: center;
  padding: var(--spacing-xxl) 0;
}
.intro .image {
  width: 100px;
  border-radius: var(--spacing-xs);
  box-shadow: var(--box-shadow);
  border: 1px solid var(--color-accent-extra-light);
  overflow: hidden;
  display: inline-block;
}
.intro p {
  font-size: larger;
  color: var(--color-accent-dark);
}
.details {
  font-size: smaller;
  margin: var(--spacing-lg) auto 0;
  max-width: 300px;
}
.details h3 {
  margin-bottom: var(--spacing-xs);
}
.details ul {
  margin: 0;
}
.details li {
  display: inline-block;
  padding: 0 var(--spacing-xs);
}
.details h3 {
  color: var(--color-accent-dark);
}



.container {
  max-width: var(--container-max-width);
  width: 100%;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.container--narrow {
  max-width: var(--container-narrow-max-width);
}

.container--extra-narrow {
  max-width: var(--container-extra-narrow-max-width);
}

.sr-only {
  border: 0;
  clip: rect(1px, 1px, 1px, 1px);
  clip-path: inset(50%);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute;
  width: 1px;
  word-wrap: normal !important;
}

/* REF: https://www.scottohara.me/blog/2019/01/12/lists-and-safari.html */
.list-reset li {
  list-style-type: none; /* remove bullets */
}

.list-reset li:before {
  content: '\200B'; /* add zero-width space */
  position: absolute; /* addition */
}

.nested-link {
  position: relative;
}

.nested-link a::after {
  content: '';
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.rich-text {
  line-height: 180%;
}

.rich-text > *:not(:last-child) {
  margin-bottom: var(--spacing-md);
}

/*
  TODO: Use `:is()` selector when autoprefixer plugin is available:
  https://github.com/postcss/postcss-selector-matches/issues/19
*/
.rich-text h1:not(:first-child),
.rich-text h2:not(:first-child),
.rich-text h3:not(:first-child),
.rich-text h4:not(:first-child),
.rich-text h5:not(:first-child),
.rich-text h6:not(:first-child) {
  margin-top: var(--spacing-xl);
}

.rich-text img {
  width: 100%;
  height: auto;
}

.rich-text ol:not([class]),
.rich-text ul:not([class]) {
  padding-left: var(--spacing-md);
}

.rich-text blockquote {
  margin-left: 0;
  margin-right: 0;
  padding: var(--spacing-xs) var(--spacing-md);
  border-left: 4px solid var(--color-accent-light);
}

.rich-text iframe {
  background-color: var(--color-gray);
  border-radius: var(--spacing-xs);
}

.rich-text__heading-anchor {
  text-decoration: none;
  font-weight: bold;
  color: var(--color-gray);
  margin-right: 0.25em;
}