* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  --textcolor: #121212;
  --bgcolor: #fff;
  --highlight: #2749c9;
}

@media (prefers-color-scheme: dark) {
  * {
    --textcolor: #dadada;
    --bgcolor: #141414;
    --highlight: #ffc400;
  }
}

body {
  font-size: 18px;
  font-family: system-ui, sans-serif;
  line-height: 1.4;
  color: var(--textcolor);
  background: var(--bgcolor);
  position: relative;
  max-width: 64em;
  margin: 0 auto;
}

/* ------- Sections ------- */

section {
  padding: calc(7em + 5vw) 5vw 8vw 5vw;
  display: none;
  position: absolute;
  top: 0;
  min-height: 100vh;
  width: 100%;
  background: var(--bgcolor);
}

section:target {
  display: block;
}

section#home {
  display: block;
}

/* ------- Header ------- */

header {
  padding: 5vw 5vw 0 5vw;
  display: flex;
  flex-wrap: wrap;
  position: absolute;
  width: 100%;
  z-index: 2;
}

header h1 {
  font-size: 2em;
  flex: 1;
  white-space: nowrap;
  padding: 0 5vw 0.5em 0;
}

nav a:not(:last-of-type) {
  margin-right: 1.5vw;
}

/* ------- General ------- */

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

a:hover {
  border-bottom: 1px solid;
}

section h1 {
  font-size: 1em;
  margin: 0 0 1em 0;
}

h2,
h3,
h4 {
  font-size: 1em;
  font-weight: 600;
  margin: 1.6em 0 0.6em 0;
}

p,
ul,
ol,
article {
  max-width: 60ch;
  margin-bottom: 0.6em;
}

ul {
  list-style-type: none;
}

ul li::marker {
  content: "\2022   ";
}

li {
  margin-bottom: 0.2em;
}

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

b,
strong {
  font-weight: 600;
}

small {
  font-size: 0.85em;
}

hr {
  height: 1px;
  border: 0;
  background: currentColor;
  opacity: 0.1;
  margin: 1.2em 0;
}

abbr {
  text-decoration: none;
}

abbr[title]:hover {
  opacity: 0.7;
  cursor: help;
}

blockquote {
  padding-left: 2ch;
  opacity: 0.7;
  margin-bottom: 0.6em;
  position: relative;
}

blockquote:before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.3em;
  bottom: 0.3em;
  background: currentColor;
  width: 1px;
  opacity: 0.2;
}

img,
svg,
video,
audio {
  display: block;
  max-width: 100%;
  height: auto;
  fill: currentColor;
}

code,
textarea {
  font-family: ui-monospace, SF Mono, Menlo, Monaco, Andale Mono, monospace;
  font-size: 1em;
  opacity: 0.7;
}

a code {
  opacity: 1;
}

pre,
textarea {
  font-size: 0.9em;
  color: inherit;
  line-height: inherit;
  padding: 0.6em 0.9em;
  margin: 0.8em 0 1em 0;
  position: relative;
  display: block;
  width: 100%;
  white-space: pre;
  border: 0;
  border-radius: 4px;
  background: rgba(255, 255, 100, 0.075);
  box-shadow: inset 1px 1px 0 rgba(0, 0, 0, 0.2),
    inset -1px -1px 0 rgba(0, 0, 0, 0.04);
}

/* Inline footnotes */

label {
  cursor: pointer;
  vertical-align: super;
  line-height: 1;
  font-size: 0.75em;
  padding-left: 0.1em;
}

label:hover {
  color: var(--highlight);
}

label:before {
  content: "[";
}

label:after {
  content: "]";
}

label + input,
label + input + small {
  display: none;
}

input:checked + small {
  display: block;
  padding: 0.8em 0 1em 2.5vw;
}

/* Figures */

figure {
  margin: 2em 0 1.5em 0;
}

figure figcaption {
  margin: 0.8em 0 0 0;
  font-size: 0.85em;
  opacity: 0.7;
}

/* Responsive video embeds */

figure.video {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
}

figure.video iframe,
figure.video object,
figure.video embed {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
  visibility: hidden;
}

section:target iframe {
  visibility: visible;
}

/* External links */

a[href*="//"]:after
{
  font-weight: 300;
  font-size: 0.85em;
  content: "\2197";
  color: var(--textcolor);
  opacity: 0.25;
}

a[href*="//"]:hover:after
{
  color: var(--highlight);
  opacity: 1;
}

/* File links */

a:before {
  font-size: 0.7em;
  margin-right: 0.4em;
}

a[href$=".pdf"]:before {
  content: "PDF";
}

a[href$=".txt"]:before {
  content: "TXT";
}

a[href$=".mp3"]:before {
  content: "MP3";
}

a[href$=".zip"]:before {
  content: "ZIP";
}

a[href$=".rar"]:before {
  content: "RAR";
}

a[href$=".jpeg"]:before,
a[href$=".jpg"]:before,
a[href$=".gif"]:before,
a[href$=".png"]:before {
  content: "IMG";
}

/* ------- News ------- */

article + article {
  margin-top: 4.5em;
}

article h2 {
  font-weight: 700;
  margin: 0 0 1em 0;
}

article time {
  margin-left: 0.6em;
  font-size: 0.8em;
  font-weight: 400;
  opacity: 0.7;
}

/* ------- Images Grid ------- */

.grid {
  display: grid;
  grid-gap: 5vmin;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  grid-auto-flow: dense;
  padding: 2em 0;
}

.grid a {
  position: relative;
  border: 0;
}

.grid a:hover {
  transform: scale(0.975);
}

/* For a square ratio */
.grid a:before {
  content: "";
  display: block;
  padding-top: 100%;
}

.grid a img {
  position: absolute;
  top: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* ------- Slideshow ------- */

.slides {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 100vh;
  overflow-y: scroll;
  scroll-snap-type: y mandatory;
}

.slides figure {
  height: 100vh;
  padding: 0 5vw;
  margin: 0;
  display: grid;
  place-items: center;
  align-content: center;
  scroll-snap-align: center;
}

.slides figure img {
  max-height: 88vh;
}

.slides figure.cover {
  padding: 0;
}

.slides figure.cover img {
  max-height: none;
  position: absolute;
  z-index: -1;
  width: 100vw;
  height: 100vh;
  object-fit: cover;
}

/* ------- Lightbox ------- */

.lightbox {
  display: none;
  color: var(--textcolor);
}

.lightbox:target {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  display: grid;
  place-items: center;
  align-content: center;
  background: var(--bgcolor);
  border: 0;
  z-index: 3;
}

.lightbox img {
  max-height: 100vh;
  z-index: 4;
}

.lightbox:target:before {
  content: "";
  height: 2em;
  width: 2em;
  animation: spin 0.8s infinite linear;
  border: 1px solid;
  border-right-color: transparent;
  border-radius: 50%;
  display: block;
  position: absolute;
  transform: translateX(-50%);
  opacity: 0.25;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(360deg);
  }
}

.lightbox:target:after {
  content: "\00D7";
  position: fixed;
  font-size: 2em;
  font-weight: 200;
  line-height: 0;
  top: 0.75em;
  right: 0.5em;
  z-index: 4;
}

/* ------- Smaller screens ------- */

@media only screen and (max-width: 680px) {
  body {
    font-size: 16px;
  }
}

@media only screen and (max-width: 540px) {
  nav {
    width: 100%;
  }
}

/* ------- Print ------- */

@media print {
  nav,
  .lightbox:target:after {
    display: none;
  }

  article,
  figure,
  img {
    page-break-inside: avoid;
    break-inside: avoid;
  }

  /* Inline footnotes */

  label + input + small {
    display: inline;
  }

  label + input + small:before {
    content: "[";
  }

  label + input + small:after {
    content: "]";
  }

  /* Slides */

  .slides,
  .slides figure {
    position: relative;
    height: auto;
    padding: 0;
  }

  .slides figure img,
  .slides figure.cover img {
    max-height: auto;
    position: relative;
    z-index: 1;
    width: auto;
    height: 100vh;
    object-fit: contain;
  }
}