* {
  margin: 0;
  padding: 0;
}

@font-face {
  font-family: 'Jost';
  font-weight: 400;
  font-style: normal;
  font-display: block;
  src: url('../font/Jost-400.woff2') format('woff2');
}

@font-face {
  font-family: 'Jost';
  font-weight: 700;
  font-style: normal;
  font-display: block;
  src: url('../font/Jost-700.woff2') format('woff2');
}

body {
  margin-top: 0;
  background-color: #fff;
  line-height: 23px;
  color: #222;
  font-family: Jost, Futura, Arial, sans-serif;
  font-size: 16px;

  @media (prefers-color-scheme: dark) {
    background: #111;
    color: #eee;
  }
}

[data-tip] {
  position: relative;

  &::before {
    background-color: #222e;
    border: 1px solid #fff4;
    box-shadow: 0 0 3px #666;
    border-radius: 8px;
    color: #eee;
    content: attr(data-tip);
    display: none;
    padding: 4px 12px;
    position: absolute;
    top: 95%;
    left: 50%;
    transform: translate(-50%);
    white-space: nowrap;
    z-index: 53;
  }

  &:hover::before {
     display: block;
  }
}

.collage {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: space-evenly;
  margin-top: 30px;

  & img {
    width: 250px;
    height: 250px;
    margin: 20px;
    border-radius: 15px;
    box-shadow: 0 0 12px #555;
  }
}

p {
  margin-top: 5px;
}

h2 {
  margin-top: 5px;
  font-weight: normal;
}

h3 {
  margin: 2px 0 9px;
  line-height: 26px;
  font-size: 24px;
  font-weight: normal;
}

h4 {
  margin-top: 15px;
  margin-bottom: 5px;
  font-size: 20px;
}

h5 {
  font-size: 18px;
}

a:link,
a:visited,
a:active {
  text-decoration: none;
  color: #159;

  @media (prefers-color-scheme: dark) {
    color: #4af;
  }
}

a:hover {
  text-decoration: none;
  color: #000;

  @media (prefers-color-scheme: dark) {
    color: #fff;
  }
}

#shadow {
  position: absolute;
  top: 0;
  right: 0;
  z-index: -2;
  box-shadow: 0 -16px 18px -6px black;
  width: 100%;
  height: 320px;

  @media (prefers-color-scheme: dark) {
    box-shadow: 0 -16px 18px -6px #eee;
  }
}

#wrapper {
  position: relative;
  margin: 0 auto;
  max-width: 1200px;
  min-height: 400px;
}

header {
  position: relative;
  background-size: cover;
  height: 170px;
  overflow: hidden;
  background-image:
    linear-gradient(to bottom, #fff0 70%, #fff2 75%, #fffe 95%, #ffff),
    var(--banner);

  @media (prefers-color-scheme: dark) {
    background-image:
      linear-gradient(to bottom, #1110 70%, #1112 75%, #111e 95%, #111f),
      var(--banner);
  }

  @media screen and (min-resolution: 2x) {
    background-image:
      linear-gradient(to bottom, #fff0 70%, #fff2 75%, #fffe 95%, #ffff),
      var(--banner2x);
  }

  @media screen and (prefers-color-scheme: dark) and (min-resolution: 2x) {
    background-image:
      linear-gradient(to bottom, #1110 70%, #1112 75%, #111e 95%, #111f),
      var(--banner2x);
  }

  & h1 {
    position: absolute;
    top: var(--top);
    left: max(175px, var(--left));
    margin: 0;
    line-height: 26px;
    white-space: nowrap;
    color: #fff;
    font-family: Jost;
    font-size: 25px;
    font-weight: normal;
  }

  & h2 {
    display: none;
    position: absolute;
    top: 158px;
    right: 10px;
    margin: 0;
    text-align: right;
    font-size: 1.5em;
    font-weight: normal;
  }
}

nav {
  display: inline-block;
  background-image:
    linear-gradient(
      to bottom,
      rgba(0, 0, 0, 0.65) 62%,
      rgba(0, 0, 0, 0.6) 67%,
      rgba(0, 0, 0, 0.05) 95%,
      rgba(0, 0, 0, 0) 100%
    );
  background-repeat: no-repeat;
  height: 100%;
  line-height: 25px;

  &:hover .active {
    background: rgba(0, 0, 0, 0.4);
  }

  & .active {
    transition: background 0.1s linear;
    background: rgba(0, 0, 0, 1);
  }

  & ul {
    display: flex;
    flex-direction: column;
    margin: 0;
    padding: 5px 0;
    list-style: none;
  }

  & ul #current {
    background: #416e83;
    color: #eee;
  }

  & a {
    display: block;
    transition: background 0.1s linear;
    padding: 0 20px 0 12px;
    height: 1.9em;
    text-decoration: none;
    white-space: nowrap;
    color: #eee;
    font-size: 15px;

    &:hover {
      background: rgba(0, 0, 0, 0.6);
    }

    &:visited,
    &:link {
      color: #eee;
    }
  }
}

hr {
  margin: 1.5em auto;
  border: 0;
  background-color: #999;
  width: 240px;
  height: 1px;

  @media (prefers-color-scheme: dark) {
    background-color: #333;
  }
}

main {
  width: 100%;
  min-height: 300px;
  text-align: left;
  overflow: hidden;
}

footer {
  border-top: 1px solid #eee;
  padding-top: 3px;
  height: 25px;
  text-align: center;
  color: #666;

  @media (prefers-color-scheme: dark) {
    border-top: 1px solid #333;
    color: #ccc;
  }

  & p {
    margin: 0;
    padding: 0;
    font-size: 11px;
  }

  & a:link,
  & a:visited {
    color: #666;

    @media (prefers-color-scheme: dark) {
      color: #ccc;
    }
  }

  & a:hover,
  & a:active {
    color: #999;
  }
}

.columns {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;

  & > div {
    flex-grow: 1;
    min-width: 220px;
  }
}