:root {
  font-size: 16px;
  font-size: clamp(14px, 8px + 0.65vw, 30px);
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  flex-grow: 1;
  padding: 0;
  line-height: 1.5;
  font-display: swap;
}

body {
  --hue-main: 280;
  --c-highlight: oklch(45% 0.135 var(--hue-main) / 0.7);
  --c-accent: oklch(45% 0.135 var(--hue-main) / 0.8);
  --c-body-background: oklch(15% 0.05 var(--hue-main));
  --c-bg1: oklch(15% 0.05 calc(var(--hue-main) + 30));
  --c-bg2: oklch(15% 0.05 calc(var(--hue-main) - 30));
  --c-dark: oklch(19.1% 0.005 var(--hue-main));
  --c-text-background-light: oklch(45% 0.135 var(--hue-main) / 0.3);
  --c-text-light: oklch(94% 0.045 calc(var(--hue-main) + 180));
  --c-text-dark: oklch(94% 0.045 calc(var(--hue-main) + 180));
  --tag-luminance: 0.85;

  --ratio: 1.333;
  --s-5: calc(var(--s-4) / var(--ratio));
  --s-4: calc(var(--s-3) / var(--ratio));
  --s-3: calc(var(--s-2) / var(--ratio));
  --s-2: calc(var(--s-1) / var(--ratio));
  --s-1: calc(var(--s0) / var(--ratio));
  --s0: 1rem;
  --s1: calc(var(--s0) * var(--ratio));
  --s2: calc(var(--s1) * var(--ratio));
  --s3: calc(var(--s2) * var(--ratio));
  --s4: calc(var(--s3) * var(--ratio));
  --s5: calc(var(--s4) * var(--ratio));
  --content-width: clamp(75vw, 40rem, 100vw - 1rem);
  --sidebar-width: clamp(
    10rem,
    calc(0.2 * var(--content-width)),
    calc(var(--content-width) * 0.5)
  );
  --inset: calc(50vw - var(--content-width) / 2);

  position: relative;
  display: flex;
  flex-direction: column;
  z-index: 1;
  flex-grow: 1;
  padding: 0;
  margin: 0;
  font-family:
    "Inter", "Inter Variable", Ubuntu, "Noto Sans", "Fira Sans", Roboto,
    "Helvetica Neue", "Arial Nova", "Nimbus Sans", Arial, sans-serif;
  background-color: var(--c-body-background);
  color: var(--c-text-dark);
  background-image:
    url(/noise.png),
    radial-gradient(ellipse at -20% 20vmin, var(--c-bg1), transparent 90%),
    radial-gradient(
      ellipse at 120% calc(100% - 20vmin),
      var(--c-bg2),
      transparent 90%
    );
}

::selection {
  background: var(--c-highlight);
  color: var(--c-text-dark);
}

mark {
  background: var(--c-highlight);
  color: inherit;
  border-radius: 0.4rem;
  box-shadow: 0 0 0.75em 0.25em var(--c-highlight);
}

*,
:after,
:before {
  box-sizing: inherit;
  font-family: inherit;
  text-decoration-color: color-mix(in srgb, currentColor 50%, transparent);
  text-decoration-thickness: 0.1rem;
}

a, label {
  color: inherit;
  --glowColor: var(--c-accent);
  --c-accent: oklch(45% 0.135 var(--hue-main) / 0.8);
}
a[href] {
  appearance: none;
  text-decoration-line: underline;
  box-decoration-break: clone;
  padding: 0.1em;
  margin: -0.1em;
  position: relative;
}
:is(a, nav label):hover,
:is(a, nav label):focus-visible,
nav label:has(input:focus-visible),
nav label:has(input:checked) {
  outline: none;
  color: var(--c-text-dark);
  background-color: var(--glowColor);
  box-shadow:
    0 0 0.5rem var(--glowColor),
    0 0 1rem var(--glowColor);
  text-decoration: none;
  border-radius: 0.5rem;
  & img {
    box-shadow:
      0 0 0.5rem var(--glowColor),
      0 0 1rem var(--glowColor);
  }
}
:is(a[href], button, nav label):focus-visible,
nav label:has(input:focus-visible) {
  z-index: 1;
  outline: 2px solid var(--c-text-dark);
}

.tag {
  &::before {
    content: "#";
  }
  --glowColor: oklch(var(--tag-luminance) 0.25 calc(25 + 360 * var(--tagIndex, 0) / var(--totalTags, 1)) / 0.3);
  color: oklch(var(--tag-luminance) 0.25 calc(25 + 360 * var(--tagIndex, 0) / var(--totalTags, 1)) / 0.8);
  &:hover {
    color: var(--c-text-dark);
  }
}

main p img {
  max-width: 100%;
}

section:nth-child(n + 2) {
  margin-top: 1rem;
}

header.toc {
  display: block;
  margin: 0;
  font-size: var(--s-1);
  ol {
    display: inline;
    margin: 0;
    padding: 0;
  }
  li {
    display: inline;
    list-style: none;
    &:nth-child(n + 2)::before {
      content: " · ";
    }
  }
}
.toc > ol::before {
  content: "Contents: ";
}
.toc ol ol {
  &::before {
    content: "(";
  }
  &::after {
    content: ")";
  }
}

:target {
  animation: ping 1s ease-out;
  &,
  a {
    text-decoration-color: var(--c-accent);
  }
}

.footnotes-sep {
  position: relative;
  z-index: -1;
  margin: 4rem -1rem -4rem;
  height: 4.1rem;
  border: none;
  background-image: radial-gradient(
    ellipse farthest-side at 50% 0%,
    var(--c-highlight),
    transparent
  );
  opacity: 0.5;
}

@keyframes ping {
  0% {
    border-radius: 50%;
    background-color: var(--c-accent);
    box-shadow: var(--c-accent) 0 0 1rem 4rem;
  }
  100% {
    border-radius: 50%;
    background-color: transparent;
    box-shadow: transparent 0 0 0rem 0rem;
  }
  100% {
    border-radius: initial;
  }
}

li::marker {
  color: color-mix(in srgb, currentcolor 50%, transparent);
}
aside {
  display: inline-block;
  margin-left: 1ch;
  font-size: var(--s-1);
}

span.aside {
  float: right;
  clear: right;
  position: relative;
  width: var(--sidebar-width);
  padding: 0.5rem 0 0.5rem 1rem;
  font-size: var(--s-1);
}
@media (min-width: 40rem) {
  main:has(span.aside) {
    padding-right: calc(var(--inset) + var(--sidebar-width));
  }
  span.aside {
    padding: 0 0 0 1rem;
    margin-right: calc(-1 * var(--sidebar-width));
    &::after {
      content: "";
      pointer-events: none;
      position: absolute;
      top: -0.5rem;
      left: 0.5rem;
      right: 0;
      bottom: -0.5rem;
      z-index: -1;
      opacity: 0.4;
      background: radial-gradient(
        ellipse farthest-side at 50% 0%,
        var(--c-highlight),
        transparent
      );
    }
  }
}

ul,
ol {
  padding-left: 1.5rem;
}

ul.collection {
  padding-left: 0;
  > li {
    list-style-type: none;
    > aside {
      display: inline;
    }
    > p {
      &::before {
        content: none;
      }
      width: 100%;
    }
    + li {
      margin-top: 1rem;
    }
  }
}
p {
  margin: 0;
}
p + p,
pre + p {
  margin-top: 1lh;
}
blockquote {
  position: relative;
  margin: 1lh 0;
  padding: 0 1em;
  &::after {
    content: "";
    pointer-events: none;
    position: absolute;
    z-index: -1;
    top: -1lh;
    bottom: -1lh;
    left: -0.1em;
    width: 15rem;
    max-width: 100%;
    background: radial-gradient(
      ellipse farthest-side at 0% 50%,
      var(--c-highlight),
      transparent
    );
    opacity: 0.5;
  }
}

sup {
  font-size: var(--s-1);
  margin-top: -0.2em;
}

body > header {
  color: var(--c-text-dark);
  padding: 0 var(--inset) 0;
  border-radius: 0.5rem 0.5rem 0 0;
  padding-top: env(safe-area-inset-top, 0);
}
body > header > nav {
  margin: 0.5rem 0 3rem;
}
.nav-categories {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  gap: 0.5em;
  margin-right: auto;
  & > a {
    white-space: nowrap;
    display: inline-block;
  }
}
.nav-row {
  width: 100%;
  display: flex;
  flex-direction: row-reverse;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.25rem;
}
.nav-home {
  flex-grow: 1;
  order: 2;
}
.nav-home,
.nav-active {
  font-weight: bold;
}
.nav-settings {
  display: flex;
  gap: 0.5em;
  flex-direction: row;
  justify-content: end;
  flex-wrap: wrap;
}
.nav-toggles {
  display: flex;
  flex-direction: row;
  font-size: var(--s-1);
}
@media print {
  :root {
    font-size: 10pt;
  }
  * {
    text-shadow: none !important;
  }
  body {
    --c-highlight: white --c-dark: white;
    --c-accent: black;
    --c-body-background: white;

    --c-text-light: black;
    --c-text-dark: black;

    --content-width: 100vw;
  }
  body {
    background: none;
  }
  h1,
  h2,
  h3,
  h4 {
    opacity: 0.8;
  }
  :is(h1, h2, h3, h4, blockquote, .aside)::after {
    content: none !important;
  }
  body > header > nav {
    display: none;
  }
  body > footer {
    display: none;
  }
  a[href^="http"]::after {
    content: " (" attr(href) ")";
    font-size: 0.75em;
    word-break: break-all;
    font-family: "Commit Mono", monospace;
    .footnotes & {
      display: block;
    }
  }
  .isso-postbox {
    display: none;
  }
  .tag {
    color: inherit;
  }
}

body > footer {
  position: relative;
  text-align: right;
  font-size: var(--s-1);
  margin: auto var(--inset) 0;
  padding-top: 4rem;
  padding-bottom: max(env(safe-area-inset-bottom, 0), 0.5rem);
  & a {
    white-space: nowrap;
  }
  ul {
    padding: 0;
    display: inline;
    > li {
      display: inline;
      + li::before {
        content: " · ";
        padding-inline: 0.5ch;
      }
    }
  }
}

.nav-toggle-button {
  position: relative;
  cursor: pointer;
  text-decoration-line: underline;
  display: inline-flex;
  align-items: center;
  border-radius: 0;
  padding: 0.1rem 0.25rem;
  margin: 0;
  border-radius: 0 !important;
  background-color: var(--c-text-background-light);
  > input[type="radio"] {
    z-index: -2;
    position: absolute;
    inset: 0;
    opacity: 0;
  }
  &:first-of-type {
    border-top-left-radius: 0.5rem !important;
    border-bottom-left-radius: 0.5rem !important;
  }
  &:last-of-type {
    border-top-right-radius: 0.5rem !important;
    border-bottom-right-radius: 0.5rem !important;
  }
}

h1,
h2,
h3,
h4 {
  color: color-mix(in lch, currentColor 90%, transparent);
  position: relative;
  font-weight: 700;
  text-shadow: 0 0 0.5em var(--c-highlight);
  margin-top: 3rem;
  + h1, + h2, + h3, + h4 {
    margin-top: 0;
  }
  margin-bottom: 0.5rem;
  &:hover .header-anchor {
    opacity: 1;
  }
}
@media screen {
  :is(h1, h2)::after {
    pointer-events: none;
    opacity: 0.5;
    content: "";
    position: absolute;
    z-index: -1;
    bottom: 0;
    left: -4rem;
    height: 4em;
    width: 30rem;
    max-width: 100%;
    background: radial-gradient(
      ellipse farthest-side at 50% 100%,
      var(--c-highlight),
      transparent
    );
  }
}

h1 {
  margin-bottom: 0;
}
.header-meta {
  font-size: var(--s-1);
  > * + *:not(:empty)::before {
    content: "-";
    padding: 0 0.5ch;
  }
}

:where(ol li) {
  list-style-type: decimal;
  & :where(ol li) {
    list-style-type: lower-alpha;
    & :where(ol li) {
      list-style-type: upper-alpha;
    }
  }
}

@media screen {
  p:has(+ pre[class*="language-"]) > code:first-child:last-child {
    position: relative;
    font-size: 0.8em;
  }
  p:has(+ pre[class*="language-"]) > code::after {
    content: "";
    pointer-events: none;
    opacity: 0.5;
    position: absolute;
    z-index: -1;
    bottom: 0;
    left: -2rem;
    height: 4rem;
    width: 20rem;
    max-width: 100%;
    background: radial-gradient(
      ellipse farthest-side at 50% 100%,
      var(--c-highlight),
      transparent
    );
  }
}

main {
  margin-top: calc(0.75 * var(--s3));
  h1,
  h2,
  h3,
  h4 {
    clear: both;
    margin-bottom: 0.25lh;
  }
  padding: 0 var(--inset);
}
h1 {
  font-size: var(--s4);
}
h2 {
  font-size: var(--s3);
}
h3 {
  font-size: var(--s2);
}
h4 {
  font-size: var(--s1);
}
a.header-anchor {
  position: absolute;
  transform: translateX(-100%);
  left: -0.2ch;
  opacity: 0;
  transition: opacity ease-in 0.1s;
  &::before {
    content: "#";
  }
  &:focus-visible {
    opacity: 1;
  }
}

.item-summary {
  margin-bottom: 1rem;
}

:not(pre) > code,
pre {
  font-family: "Commit Mono", monospace;
  background-color: var(--c-text-background-light);
  padding: 0.1em;
  border-radius: 0.5em;
}
p > code {
  margin: -0.1em 0;
  display: inline-block;
}

body #isso-thread {
  margin: 4rem var(--inset) 0;
}

body .isso-postbox {
  max-width: none;
}

body .isso-textarea {
  margin: 0;
  line-height: 1.4rem;
}
body h4.isso-thread-heading {
  color: inherit;
}
body .isso-auth-section {
  display: flex;
  align-items: end;
  justify-content: end;
  gap: 5px;
  margin-top: 0.5rem;
}
body .isso-input-wrapper {
  display: flex;
  flex-direction: column;
  font-size: var(--s-1);
  margin: 0;
  width: 100%;
  max-width: none;
  flex-shrink: 1;
}

body .isso-input-wrapper label {
  height: auto;
}

body .isso-input-wrapper input,
input[type="text"],
body .isso-textarea,
body .isso-preview {
  color: inherit;
  font-size: 1rem;
  background-color: transparent;
  padding: 0.5rem;
  width: 100%;
  border-radius: 0.2rem;
  line-height: 1.4rem;
  border: none;
  border-bottom: 2px solid var(--c-accent);
  box-shadow: inset 0 0 2rem -1rem var(--c-accent);
  outline: none;
  &:focus {
    box-shadow:
      inset 0 0 2rem -1rem var(--c-accent),
      inset 0 -1.5rem 2.5rem -1.5rem var(--c-accent);
    border-color: var(--c-accent);
  }
}
body .isso-textarea {
  line-height: 1.2;
}
body .isso-preview {
  background: repeating-linear-gradient(
    -45deg,
    transparent,
    transparent 10px,
    var(--c-text-background-light) 10px,
    var(--c-text-background-light) 20px
  );
}
body .isso-post-action > input,
button, a.button {
  color: inherit;
  text-decoration: none;
  background-color: var(--c-text-background-light);
  font-size: 1rem;
  padding: calc(0.5rem + 1px) 0.5rem;
  border-radius: 0.2rem;
  border: none;
  cursor: pointer;
  outline: 0;
  line-height: 1.4rem;
  &:hover,
  &:focus-visible {
    background-color: var(--c-accent);
    box-shadow:
      0 0 0.5rem var(--c-accent),
      0 0 1rem var(--c-accent);
  }
}

body .isso-post-action {
  margin: 0;
}
.isso-postbox:not(.isso-preview-mode)
  .isso-post-action:has(input[name="edit"]) {
  display: none;
}
@media (max-width: 60rem) {
  body .isso-auth-section {
    flex-wrap: wrap;
  }
  body .isso-input-wrapper {
    width: 100%;
  }
}

#effects {
  mask-image: url("/code-traces.svg");
  pointer-events: none;
  position: absolute;
  z-index: -1;
  inset: 0;
  overflow: hidden;
}
@keyframes ripple {
  0% {
    opacity: 0;
    transform: scale(0.2);
  }
  10% {
    opacity: 0.75;
  }
  100% {
    opacity: 1;
    transform: scale(1.5);
  }
}
.effect-instance {
  position: absolute;
  border-radius: 0.5rem;
  background: radial-gradient(
    ellipse farthest-side at 50% 50%,
    var(--glowColor) 10%,
    color-mix(in lch, var(--glowColor), transparent) 25%,
    color-mix(in lch, var(--glowColor), transparent 80%) 35%,
    transparent
  );
  animation: 1s ease normal forwards ripple;
}
.pagefind-ui__form {
  display: grid;
  gap: 0.5rem;
  grid-template-columns: 1fr min-content;
}
.pagefind-ui__search-input {
  margin-right: 0.5rem;
  grid-column-start: 0;
  grid-column-end: span 1;
}
.pagefind-ui__drawer {
  grid-column-start: 0;
  grid-column-end: span 2;
  width: 100%;
}
.pagefind-ui__result-excerpt {
  margin: 0.5rem 0;
}

.feature {
  > p:first-child::first-line {
    font-size: var(--s2);
    font-weight: 200;
  }
}
