:root {
  font-family: Verdana, Geneva, sans-serif;
  font-size: larger;
}

* {
  box-sizing: border-box;
  transition: all 0.25s ease-in-out;
}

h1,
h2 {
  text-align: center;
}

body, html {
  margin: 0;
  padding: 0;
}

body {
  width: 100%;
  display: grid;

  grid-template-areas:
    'header'
    'main'
    'footer';
  grid-template-rows: 3em auto auto;
  grid-template-columns: auto;
}

body > header {
  grid-area: header;
}

body > footer {
  grid-area: footer;
}

main {
  grid-area: main;
  border-radius: 5px;
}

a{
  text-decoration: none;
}

body > header, body > footer, main {
  justify-self: center;
  width: clamp(30ch, calc(100% - 1em), 75ch);
  padding-left: 0.5em;
  padding-right: 0.5em;
}


/* article elements */
div.article-info {
  line-height: 0.3;
  font-size: smaller;
}

div.article-info > div.article-tags {
  font-size: larger;
}


/* nav bar / header */
body > header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  align-content: center;
}

nav ul {
  margin: 0;
  padding: 0;
  list-style-type: none;
}

nav li {
  display: block;
  float: left;
  border-radius: 5px;
  min-width: 1em;
  max-width: 10em;
  padding-top: 0.2em;
  padding-bottom: 0.2em;
  padding-left: 0.4em;
  padding-right: 0.4em;
  margin-left: 0.2em;
  margin-right: 0.2em;
}

nav > ul > li > ul {
  visibility: hidden;
  position: absolute;
  padding-top: 0.2em;
  padding-bottom: 0.2em;
}

nav > ul > li:hover > ul {
  visibility: visible;
}

nav > ul > li > ul > li {
  float: none;
  margin-top: 0.4em;
}

nav span {
  display: none;
}

@media screen and (min-width: 600px) {
  nav span {
    display: inline;
    padding-left: 0.4em;
  }
}


/* footer */
body > footer {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

body > footer > span {
  font-size: smaller;
}


/* theme swticher */
button.theme-switcher {
  border: none;
  font: inherit;
  cursor: pointer;
  position: relative;
  border-radius: 5px;
  padding-top: 0.2em;
  padding-bottom: 0.2em;
  padding-left: 0;
  padding-right: 0;
  margin-left: 0.2em;
  margin-right: 0.2em;
}

button.theme-switcher > .fa-sun {
  transform: translate(-0.5em, -1em);
}

.theme-light button.theme-switcher > .fa-sun {
  transform: translateX(-0.5em);
  transition: all 0.25s ease-in-out;
}

button.theme-switcher > .fa-moon {
  transform: translate(0.5em, -1em);
}

.theme-dark button.theme-switcher > .fa-moon {
  transform: translateX(0.5em);
  transition: all 0.25s ease-in-out;
}

/* code blocks */
pre {
  white-space: pre-wrap;
}

code {
  overflow-wrap: anywhere;
}

code.crypto {
  font-size: smaller;
}

/* for hljs line numbers */
.hljs-ln-numbers {
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -khtml-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;

  text-align: right;
  border-right: 1px solid #CCC;
  vertical-align: top;
  padding-right: 0.5em !important;
}

.hljs-ln-code {
    padding-left: 0.5em !important;
}


/* images */
img {
  border-radius: 5px;
  max-width: 100%;
  display: block;
  margin-left: auto;
  margin-right: auto;
  vertical-align: middle;
}

img.wrap-right {
  float: right;
}

img.wrap-left {
  float: left;
}

img.qr {
  max-width: 200px;
  padding: 1em;
}

/* img grid */
div.img-grid, div.img-grid > p {
  display: grid;
  gap: 1em;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

div.img-grid img {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  overflow: hidden;
}


/* art grid */
div.art-grid, div.art-grid > p {
  display: grid;
  gap: 1em;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  grid-auto-rows: minmax(250px, auto);
}

div.art-grid img {
  border: 1px solid white;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  overflow: hidden;
}

@media screen and (min-width: 600px) {
  div.art-grid img.wide {
    grid-column: span 2 / auto;
  }

  div.art-grid img.tall {
    grid-row: span 2 / auto;
  }
}