emacs-config/misc/org-css/_links.scss

// Link and buttons

a {
  color: inherit;
  position: relative; // For the ::before element positioning
}

// #breadcrumbs a,
figcaption a,
p a,
.page-tags a,
table a,
// #crosslinks a:not(.highlight),
li a,
dl a {
  @include link-underline($back-white, $text-dark);
  &:hover {
    opacity: 0.9;
    filter: drop-shadow(1px 1px 1px $back-white);
    text-decoration: none;
    &::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      mask-image: url("data:image/svg+xml;charset=utf8,%3Csvg id='squiggle-link' xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' xmlns:ev='http://www.w3.org/2001/xml-events' viewBox='0 0 20 4'%3E%3Cstyle type='text/css'%3E.squiggle{animation:shift .3s linear infinite;}@keyframes shift {from {transform:translateX(0);}to {transform:translateX(-20px);}}%3C/style%3E%3Cpath fill='none' stroke='%23000000' stroke-width='2' class='squiggle' d='M0,3.5 c 5,0,5,-3,10,-3 s 5,3,10,3 c 5,0,5,-3,10,-3 s 5,3,10,3'/%3E%3C/svg%3E") !important;
      mask-position: 0% 100%;
      mask-size: 0.8em auto;
      mask-repeat: repeat-x;
      background: $text-light;
    }
  }

  &[href^="#"] {
    @include text-underline($text-gray);
    @include text-selection($back-white);
    &:hover {
      opacity: 0.9;
      filter: drop-shadow(1px 1px 1px $back-white);
      @include text-underline($text-medium);
      @include text-selection($back-white);
    }
  }
}

#theme-switch:checked ~ #page {
  #breadcrumbs a,
  figcaption a,
  p a,
  .page-tags a,
  table a,
  #crosslinks a:not(.highlight),
  li a,
  dl a {
    &:hover {
      text-decoration: none;
      &::before {
        content: "";
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        mask-image: url("data:image/svg+xml;charset=utf8,%3Csvg id='squiggle-link' xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' xmlns:ev='http://www.w3.org/2001/xml-events' viewBox='0 0 20 4'%3E%3Cstyle type='text/css'%3E.squiggle{animation:shift .3s linear infinite;}@keyframes shift {from {transform:translateX(0);}to {transform:translateX(-20px);}}%3C/style%3E%3Cpath fill='none' stroke='%23000000' stroke-width='2' class='squiggle' d='M0,3.5 c 5,0,5,-3,10,-3 s 5,3,10,3 c 5,0,5,-3,10,-3 s 5,3,10,3'/%3E%3C/svg%3E") !important;
        mask-position: 0% 100%;
        mask-size: 0.8em auto;
        mask-repeat: repeat-x;
        background: $text-light;
      }
    }
  }
}

*:target::before {
  content: "🠖";
  position: absolute;
  left: -7rem;
  @media (max-width:1000px) {
    content: "🠔";
    left: unset;
    right: 0;
  }
  top: calc(0.5em - 2rem);
  line-height: 1;
  color: #e65353aa;
  font-size: 3rem;
  font-style: normal;
}

#content .page-intro p a,
#footnotes a {
  @include link-underline($back-white, $text-gray);

  &:hover {
    @include link-underline($back-light, $text-gray);
  }
}

// .pile-link::before {
//   background-color: $back-white;
//   content: "‹\00a0";
// }

// .pile-link::after {
//   background-color: $back-white;
//   content: "\00a0›";
// }

// #crosslinks {
//   margin-top: 20px;
//   a:not(.highlight) {
//     @include tag;
//   }
// }

.btn {
  @include button(1px, 14px, 7px);
  cursor: pointer;
}

.btn.disabled {
  color: $text-light;
  &:hover {
    cursor: default;
  }
}

.btn.small {
  @include button(1px, 12px, 3px);
  padding-right: 9px;
  padding-left: 9px;
}

.btn.highlight {
  text-shadow: none;
  text-decoration: none;
  color: $text-dark;
  background-color: yellow;
}

.btn.primary {
  text-shadow: none;
  text-decoration: none;
  color: $back-white;
  background-color: $accent;

  &:hover {
    background-color: $back-light;
    background-image: none;
    color: $text-dark;
  }
}

.image-link, .image-link:hover {
  @include link-reset();
}

div.link-preview {
  border: 1px solid $back-medium;
  border-radius: 0.5em;
  overflow: hidden;
  position: relative;
  max-height: 5em;
  padding-left: 0.5em;
  a {
    color: inherit;
    text-decoration: none;
  }
  img {
    border-right: 1px solid $back-medium;
    float: left;
    height: 5em;
    margin-left: -0.5em;
    margin-right: 0.5em;
  }
  p {
    margin: 0 0.6em 0 0;
    font-size: 10pt;
    b {
      font-size: 11pt;
    }
  }
  small {
    float: right;
    font-family: sans;
    color: $text-light;
    margin: 0.45em 0.6em;
  }
}