:root {
  --accent: #2d9cdb;
  /* --accent-color: #78c0a8; */
  --accent-color: salmon;
  --font-family: Bitter, serif;
  --background: #efefef;
  --text-color: #141414;

  /* --color-mode: "dark"; */
  --color-mode: "light";
  --color-dark: #141414;
  --color-dark-alpha: rgba(0, 0, 0, 0.1);
  --color-light: #efefef;
  --color-light-alpha: rgba(255, 255, 255, 0.9);

  /* Others */
  --button-icon: var(--icon-moon);
  --button-icon-filter: var(--icon-moon-filter);
  --button-background: var(--color-dark);
  --button-color: var(--color-light);
  --border-color: var(--color-dark);
  /* --border-color: var(--color-dark-alpha); */

  --frame-border-size: 0.2rem;
  --frame-height: 0.3rem;
  --frame-width: 0.3rem;

  /* @link https://utopia.fyi/type/calculator?c=320,27,1.2,1240,35,1.25,3,5,&s=0.75|0.5|0.25,1.5|2|3|4|6,s-l&g=s,l,xl,12 */

  --step--2: clamp(0.7813rem, 0.7511rem + 0.151vi, 0.8681rem);
  --step--1: clamp(0.9375rem, 0.9013rem + 0.1812vi, 1.0417rem);
  --step-0: clamp(1.125rem, 1.0815rem + 0.2174vi, 1.25rem);
  --step-1: clamp(1.35rem, 1.2978rem + 0.2609vi, 1.5rem);
  --step-2: clamp(1.62rem, 1.5574rem + 0.313vi, 1.8rem);
  --step-3: clamp(1.944rem, 1.8689rem + 0.3757vi, 2.16rem);
  --step-4: clamp(2.3328rem, 2.2426rem + 0.4508vi, 2.592rem);
  --step-5: clamp(2.7994rem, 2.6912rem + 0.5409vi, 3.1104rem);

  /* @link https://utopia.fyi/space/calculator?c=320,27,1.2,1240,35,1.25,3,5,&s=0.75|0.5|0.25,1.5|2|3|4|6,s-l&g=s,l,xl,12 */

  --space-3xs: clamp(0.4375rem, 0.394rem + 0.2174vi, 0.5625rem);
  --space-2xs: clamp(0.875rem, 0.788rem + 0.4348vi, 1.125rem);
  --space-xs: clamp(1.25rem, 1.1196rem + 0.6522vi, 1.625rem);
  --space-s: clamp(1.6875rem, 1.5136rem + 0.8696vi, 2.1875rem);
  --space-m: clamp(2.5625rem, 2.3016rem + 1.3043vi, 3.3125rem);
  --space-l: clamp(3.375rem, 3.0272rem + 1.7391vi, 4.375rem);
  --space-xl: clamp(5.0625rem, 4.5408rem + 2.6087vi, 6.5625rem);
  --space-2xl: clamp(6.75rem, 6.0543rem + 3.4783vi, 8.75rem);
  --space-3xl: clamp(10.125rem, 9.0815rem + 5.2174vi, 13.125rem);

  /* One-up pairs */
  --space-3xs-2xs: clamp(0.4375rem, 0.1984rem + 1.1957vi, 1.125rem);
  --space-2xs-xs: clamp(0.875rem, 0.6141rem + 1.3043vi, 1.625rem);
  --space-xs-s: clamp(1.25rem, 0.9239rem + 1.6304vi, 2.1875rem);
  --space-s-m: clamp(1.6875rem, 1.1223rem + 2.8261vi, 3.3125rem);
  --space-m-l: clamp(2.5625rem, 1.9321rem + 3.1522vi, 4.375rem);
  --space-l-xl: clamp(3.375rem, 2.2663rem + 5.5435vi, 6.5625rem);
  --space-xl-2xl: clamp(5.0625rem, 3.7799rem + 6.413vi, 8.75rem);
  --space-2xl-3xl: clamp(6.75rem, 4.5326rem + 11.087vi, 13.125rem);

  /* Custom pairs */
  --space-s-l: clamp(1.6875rem, 0.7527rem + 4.6739vi, 4.375rem);

  /* toggle code */
  --icon-sun: url('data:image/svg+xml,\<svg version="1.1" xmlns="http://www.w3.org/2000/svg" fill="currentColor" viewBox="0 0 24 24">\<path d="M18 12c0-0.811-0.161-1.587-0.455-2.295-0.304-0.735-0.75-1.395-1.303-1.948-0.552-0.552-1.213-0.998-1.948-1.303-0.707-0.293-1.483-0.454-2.294-0.454s-1.587 0.161-2.295 0.455c-0.735 0.304-1.395 0.75-1.948 1.302s-0.998 1.213-1.302 1.948c-0.294 0.708-0.455 1.484-0.455 2.295s0.161 1.587 0.455 2.295c0.304 0.735 0.75 1.395 1.303 1.948 0.552 0.552 1.213 0.998 1.948 1.303 0.707 0.293 1.483 0.454 2.294 0.454s1.587-0.161 2.295-0.455c0.735-0.304 1.395-0.75 1.948-1.303s0.998-1.213 1.303-1.948c0.293-0.707 0.454-1.483 0.454-2.294zM16 12c0 0.544-0.108 1.060-0.303 1.529-0.202 0.489-0.5 0.929-0.869 1.299s-0.81 0.667-1.299 0.869c-0.469 0.195-0.985 0.303-1.529 0.303s-1.060-0.108-1.529-0.303c-0.489-0.202-0.929-0.5-1.299-0.869s-0.667-0.81-0.869-1.299c-0.195-0.469-0.303-0.985-0.303-1.529s0.108-1.060 0.303-1.529c0.202-0.489 0.5-0.929 0.869-1.299s0.81-0.667 1.299-0.869c0.469-0.195 0.985-0.303 1.529-0.303s1.060 0.108 1.529 0.303c0.489 0.202 0.929 0.5 1.299 0.869s0.667 0.81 0.869 1.299c0.195 0.469 0.303 0.985 0.303 1.529zM11 1v2c0 0.552 0.448 1 1 1s1-0.448 1-1v-2c0-0.552-0.448-1-1-1s-1 0.448-1 1zM11 21v2c0 0.552 0.448 1 1 1s1-0.448 1-1v-2c0-0.552-0.448-1-1-1s-1 0.448-1 1zM3.513 4.927l1.42 1.42c0.391 0.391 1.024 0.391 1.414 0s0.391-1.024 0-1.414l-1.42-1.42c-0.391-0.391-1.024-0.391-1.414 0s-0.391 1.024 0 1.414zM17.653 19.067l1.42 1.42c0.391 0.391 1.024 0.391 1.414 0s0.391-1.024 0-1.414l-1.42-1.42c-0.391-0.391-1.024-0.391-1.414 0s-0.391 1.024 0 1.414zM1 13h2c0.552 0 1-0.448 1-1s-0.448-1-1-1h-2c-0.552 0-1 0.448-1 1s0.448 1 1 1zM21 13h2c0.552 0 1-0.448 1-1s-0.448-1-1-1h-2c-0.552 0-1 0.448-1 1s0.448 1 1 1zM4.927 20.487l1.42-1.42c0.391-0.391 0.391-1.024 0-1.414s-1.024-0.391-1.414 0l-1.42 1.42c-0.391 0.391-0.391 1.024 0 1.414s1.024 0.391 1.414 0zM19.067 6.347l1.42-1.42c0.391-0.391 0.391-1.024 0-1.414s-1.024-0.391-1.414 0l-1.42 1.42c-0.391 0.391-0.391 1.024 0 1.414s1.024 0.391 1.414 0z"></path>\</svg>');
  --icon-sun-filter: invert(0.61) sepia(0.8) saturate(5) hue-rotate(0deg)
    brightness(0.92);
  --icon-moon: url('data:image/svg+xml,\<svg version="1.1" xmlns="http://www.w3.org/2000/svg" fill="currentColor" viewBox="0 0 24 24">\<path d="M21.996 12.882c0.022-0.233-0.038-0.476-0.188-0.681-0.325-0.446-0.951-0.544-1.397-0.219-0.95 0.693-2.059 1.086-3.188 1.162-0.696 0.047-1.399-0.027-2.077-0.226-0.656-0.192-1.29-0.501-1.874-0.932-0.655-0.484-1.181-1.074-1.575-1.729-0.409-0.68-0.676-1.432-0.792-2.206s-0.082-1.571 0.11-2.342c0.184-0.741 0.514-1.46 0.999-2.115 0.142-0.191 0.216-0.435 0.191-0.691-0.053-0.55-0.542-0.952-1.092-0.898-1.117 0.109-2.186 0.399-3.172 0.843-1.005 0.452-1.925 1.065-2.723 1.808-0.883 0.82-1.618 1.801-2.159 2.901-0.523 1.064-0.863 2.238-0.978 3.485-0.125 1.347 0.024 2.658 0.402 3.878 0.392 1.266 1.031 2.431 1.863 3.433s1.86 1.843 3.033 2.461c1.13 0.595 2.392 0.982 3.739 1.106s2.659-0.025 3.878-0.403c1.266-0.392 2.431-1.031 3.433-1.863s1.843-1.86 2.461-3.033c0.595-1.13 0.982-2.392 1.106-3.739zM19.567 14.674c-0.126 0.351-0.276 0.689-0.447 1.014-0.493 0.937-1.166 1.76-1.969 2.427s-1.735 1.178-2.747 1.491c-0.973 0.302-2.021 0.421-3.102 0.321s-2.089-0.41-2.99-0.884c-0.937-0.493-1.76-1.166-2.427-1.969s-1.178-1.735-1.491-2.747c-0.302-0.973-0.421-2.021-0.321-3.102 0.092-1 0.365-1.938 0.782-2.786 0.43-0.878 1.018-1.661 1.725-2.319 0.64-0.595 1.377-1.086 2.183-1.449 0.179-0.081 0.362-0.155 0.548-0.223-0.092 0.257-0.171 0.516-0.236 0.778-0.256 1.029-0.302 2.091-0.147 3.121s0.51 2.032 1.056 2.941c0.527 0.875 1.23 1.663 2.1 2.306 0.775 0.573 1.622 0.986 2.5 1.243 0.907 0.266 1.846 0.364 2.772 0.302 0.752-0.050 1.496-0.207 2.21-0.465z"></path>\</svg>');
  /* --icon-moon-filter: invert(0.75); */
}

/* Typography */
h1 {
  font-size: var(--step-4);
}
h2 {
  font-size: var(--step-3);
}
h3 {
  font-size: var(--step-2);
}
h4,
h5,
h6 {
  font-size: var(--step-1);
}
blockquote:not([class]) {
  font-size: var(--step-0);
}
blockquote:not([class]) p:last-of-type {
  font-size: var(--step-0);
}
p > code,
li > code,
a > code {
  font-size: var(--step--1);
}
body {
  font-size: var(--step--1);
}
table {
  font-size: var(--step--1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-mode: "dark";
  }

  :root:not([data-user-color-scheme]) {
    --background: var(--color-light);
    --text-color: var(--color-dark);
    --button-icon: var(--icon-sun);
    --button-icon-filter: var(--icon-sun-filter);
    --button-background: var(--color-dark);
    --button-color: var(--color-light);
    --border-color: var(--color-dark-alpha);
  }
}

[data-user-color-scheme="dark"] {
  --background: var(--color-dark);
  --text-color: var(--color-light);
  --button-icon: var(--icon-sun);
  --button-icon-filter: var(--icon-sun-filter);
  --button-background: var(--color-light-alpha);
  --button-color: var(--color-dark);
  --border-color: var(--color-light-alpha);
  --accent: salmon;
  --accent-color: #2d9cdb;
}

body {
  font-family: var(--font-family);
  line-height: 1.5;
  font-size: var(--step-0);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  margin: 0 1.5rem;
  background: var(--background);
  color: var(--text-color);
}

.page-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  padding-top: 1rem;
}

.page-header nav a:not(:hover):not(:focus) {
  color: currentColor;
  text-decoration: none;
}

nav a {
  margin: 0 12px;
  font-size: var(--step-0);
  font-weight: 600;
}

main {
  flex-grow: 1;
  max-width: 60ch;
  width: 100%;
  margin: 0 auto;
}

.page-footer {
  text-align: center;
  margin-top: 2rem;
}

a[href] {
  color: var(--accent);
}

a[href]:hover {
  text-decoration: none;
}

a[href]:focus {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

.footnotes {
  font-size: 0.8em;
}

/* Typography */
p {
  margin-bottom: 1.15rem;
}

h1,
h2,
h3,
h4,
h5 {
  margin: 2.75rem 0 1.05rem;
  font-weight: 600;
  line-height: 1.15;
}

/* backlinks */
.backlinks-title {
  margin-bottom: 1rem;
  margin-top: 1rem;
}

.backlinks-container {
}

.backlinks-default {
  margin-top: 1rem;
  margin-left: 16px;
  color: var(--text-color);
}

.backlink__preview {
  display: none;

  position: absolute;
  bottom: 8px;
  left: 100%;
  background-color: var(--background);
  border-radius: 0.2rem;
  padding: 1rem;
  box-shadow: 0.1rem 0.5rem 0.7rem rgba(0, 0, 0, 0.5);
  width: clamp(348px, 750px, 1100px); /* 348 */
  overflow: hidden;
  /* max-height: 348px; */
  outline: 0.2rem solid black;
}
.backlink__preview::after {
  content: "";
  position: absolute;
  bottom: 0;
  background: linear-gradient(transparent, var(--background));
  width: 100%;
  height: 24px;
}

.backlink__preview h1 {
  margin: 0 0 1rem 0;
  font-size: var(--step-3);
}
.backlink__preview h2 {
  margin-top: 1rem;
  font-size: var(--step-2);
}
.backlink__preview h3 {
  font-size: var(--step-1);
}

.backlink {
  font-size: var(--step--1);
  width: fit-content;
  position: relative;
}

.backlink:hover {
  padding-right: 4px; /* Allow mouse to travel between link and modal */
}

.backlink:hover .backlink__preview {
  display: block;
}

/* Custom CSS */
.author-picture {
  outline: 0.15rem solid var(--border-color);
  border-radius: 50%;
  box-shadow: 0.2rem 0.5rem 1rem rgba(0, 0, 0, 0.75);
  /* clip-path: circle(); */
}

table {
  /* width: 100%; */
  margin: 3rem auto;
  border-collapse: collapse;
  box-shadow: 0.1rem 0.5rem 0.7rem rgba(0, 0, 0, 0.5);
}

th,
td {
  border: 1px solid var(--border-color);
  padding: 1px 10px;
}

table thead th,
table tfoot th {
  background: rgba(0, 0, 0, 0.1);
}

article > * + * {
  margin-top: 0.5em;
}

.no-js .user-toggle {
  display: none;
}

/* .user-toggle {
  max-width: 20rem;
} */

.toggle-button {
  display: inline-flex;
  background: inherit;
  border: none;
  font: inherit;
  font-size: var(--step-0);
  transition: background 500ms ease-in-out, color 200ms ease;
  cursor: pointer;
}

.toggle-button__icon {
  background: var(--button-icon);
  width: 1.5rem;
  height: 1.5rem;
  margin-bottom: 1rem;
  filter: var(--button-icon-filter);
  transform: translateY(1px); /* Optical adjustment */
  transition: filter 400ms ease-in-out;
}

/* .toggle-button:focus {
  outline: 1px solid var(--button-background);
  outline-offset: 0.5rem;
} */

blockquote {
  box-shadow: 0.1rem 0.5rem 0.7rem rgba(0, 0, 0, 0.5);
  outline: 0.1rem solid black;
  border-radius: 0.2rem;
  font-style: italic;
  color: var(--text-color);
  background: var(--background);
  border-left: 0.5em solid var(--accent);
  position: relative;
  text-align: center;
  margin: 2rem 1.5rem;
  transition: background 400ms ease-in-out, color 300ms ease;
  & p {
    margin: 1rem 0.1rem;
    padding: 1em;
  }
}

blockquote::before {
  content: "“";
  color: var(--accent);
  font-size: var(--step-5);
  position: absolute;
  left: 0.1em;
  top: -0.75rem;
}

blockquote::after {
  font-family: Bitter;
  content: "”";
  color: var(--accent);
  font-size: var(--step-5);
  display: inline;
  position: absolute;
  right: 0.4em;
  bottom: -0.9em;
}

pre,
code {
  background-color: rgba(0, 0, 0, 0.1);
}

code {
  padding: 0.2em;
  border-radius: 0.3em;
  font-weight: 600;
}

pre {
  box-shadow: 0.1rem 0.5rem 0.7rem rgba(0, 0, 0, 1) inset;
  border-radius: 0.2em;
  padding: 1em;
  overflow: auto;
  margin: 2em auto;
}

pre code {
  background-color: transparent;
  font-size: var(--step--1);
}

.catalogue {
  display: block;
  padding: 0.5rem 0;

  a {
    color: var(--text-color);
  }
}

.catalogue-title {
  margin-top: 0.5rem;
  margin-bottom: 0.2rem;
  /* margin: 0.5rem 0; */
}

.catalogue-time {
  letter-spacing: 0.5px;
}

.catalogue-line {
  border-top: 0.3rem solid var(--accent);
  transition: all 300ms ease-out;
  width: 4rem;
  padding: 0.5rem 0;
  margin: 0;
}

.catalogue-item {
  display: block;
  text-decoration: none;
  border-bottom: 0.1rem solid var(--color-dark-alpha);
  padding: 1rem 0;

  &:hover .catalogue-line,
  &:focus .catalogue-line {
    width: 8rem;
  }
  &:last-child {
    border: 0;
  }
}

@media only screen and (max-width: 468px) {
  .page-header {
    flex-direction: column;
    font-size: var(--step--1);
  }

  .page-header__logo {
    margin: 1rem;
  }

  .author-picture {
    width: 6rem;
  }

  :root {
    --frame-border-size: 2px;
    --frame-height: 0.15rem;
    --frame-width: 0.15rem;
  }

  .site-nav-link {
    outline: var(--frame-border-size) solid rgb(30 41 59);
    padding: var(--frame-height) var(--frame-width);
    border-radius: 0.2rem;
    font-weight: 400;
  }

  .toggle-button__icon {
    /* font-size: var(--step--1); */
    width: 1.2rem;
    height: 1.2rem;
  }
  article p {
      text-align: justify;
    }
  article blockquote p {
      text-align: center;
    }
  }
}

.site-nav {
  margin: 0;
  padding: 0;
  text-align: center;

  & :first-child {
    margin-left: 0;
  }
  & :last-child {
    margin-right: 0;
  }
}

.site-nav-link {
  margin: 0.3rem;
  transition: all 300ms ease-out;
  outline: var(--frame-border-size) solid rgb(30 41 59);
  padding: var(--frame-height) var(--frame-width);
  border-color: var(--border-color);
  border-radius: 0.2rem;
  box-shadow: 0.1rem 0.5rem 0.7rem rgba(0, 0, 0, 0.5);
}

.site-nav-link:hover {
  color: var(--text-color);
  background: var(--accent-color);
  border-color: var(--border-color);
}

[aria-current="page"] {
  background: var(--accent);
}

ul,
ol {
  padding-inline-start: 1em;
}

hr {
  margin: 2rem 0rem;
}

details.toc {
  border: 0.15rem solid black;
  border-radius: 0.2rem;
  font-size: var(--step-0);
  font-weight: 600;
  box-shadow: 0.1rem 0.5rem 0.7rem rgba(0, 0, 0, 0.5);
}
summary.toc-summary {
  padding: 0.5rem 1rem;
  list-style: none;
  cursor: pointer;
}
details[open] > summary {
  border-bottom: 0.15rem solid black;
}
.toc li {
  list-style: none;
  text-decoration: none;
}
.toc a {
  color: var(--text-color);
  /* text-decoration: none; */
}

h1.page-title {
  text-decoration-color: var(--accent);
  /* box-shadow: 0.1rem 0.5rem 0.7rem rgba(0, 0, 0, 0.5); */
  /* outline: 0.15rem solid black; */
  /* border-radius: 0.2rem; */
  /* padding: 0.5rem; */
  /* text-decoration: underline overline; */
  text-decoration-line: underline;
  text-decoration-style: wavy;
}

article img {
  width: 100%;
  box-shadow: 0.1rem 0.5rem 0.7rem rgba(0, 0, 0, 0.5);
  border: 0.15rem solid black;
  border-radius: 0.2rem;
}