.toc {
  display: block;
  margin: var(--spacing) 0;
  background-color: var(--base-3);
  border-radius: var(--border-radius);
  border: 1px solid var(--base);
  contain: content;
}

.toc:not([open]) {
  width: fit-content;
}

.toc:not([open]):hover {
  border-color: var(--accent);
}

.toc:not([open]):hover summary {
  color: var(--accent);
}

.toc summary {
  padding: .75em;
  color: var(--contrast-2);
}

.toc summary:hover {
  cursor: pointer;
}

.toc[open] summary .hide,
.toc summary .show {
  display: inline;
}

.toc summary .hide,
.toc[open] summary .show {
  display: none;
}

.toc ul {
  padding: 0 1em 1em;
  margin: 0;
  list-style-type: none;
  border-radius: 4px;
}

.toc a {
  text-wrap: balance;
}

.toc .item-h3 {
  margin-left: 0.5em;
}

.toc .item-h4 {
  margin-left: 1.5em;
}

.toc .item-h5 {
  margin-left: 2.5em;
}

.toc .item-h6 {
  margin-left: 3.5em;
}

.toc .item-h3::before,
.toc .item-h4::before,
.toc .item-h5::before,
.toc .item-h6::before {
  content: "\22A2";
  margin-right: 0.5em;
  color: var(--contrast-2);
}

@-webkit-keyframes downarrow {
  0% {
    -webkit-transform: translateY(0);
    opacity: 0.3;
  }

  100% {
    -webkit-transform: translateY(0.2em);
    opacity: 1;
  }
}

@keyframes downarrow {
  0% {
    transform: translateY(0);
    opacity: 0.3;
  }

  100% {
    transform: translateY(0.2em);
    opacity: 1;
  }
}

@media (pointer: fine) {
  .toc a::after {
    content: "\2193";
    display: inline-block;
    margin-left: 0.66em;
    transform-origin: 50% 50%;
    -webkit-animation: downarrow 0.6s infinite alternate ease-in-out;
    animation: downarrow 0.6s infinite alternate ease-in-out;
    visibility: hidden;
    color: var(--accent);
  }

  .toc a:hover::after {
    visibility: visible;
  }
}