/*
  Accordion, tabs, and reveal (modal).
  Accordion is native <details>/<summary>. Reveal is native <dialog>.
  Tabs still need the small script in site.js.

  Accordion:
    <div class="accordion" data-accordion>
      <details class="accordion-item">
        <summary class="accordion-title">Title</summary>
        <div class="accordion-content">…</div>
      </details>
    </div>
    One panel open at a time. Add data-multi-expand="true" to allow several.

  Reveal:
    <button class="button" data-open="my-modal">Open</button>
    <dialog class="reveal" id="my-modal">
      <button class="close-button" data-close aria-label="Close">&times;</button>
      …
    </dialog>

  Tabs:
    <ul class="tabs" data-tabs>
      <li class="tabs-title is-active"><a href="#panel1">One</a></li>
      <li class="tabs-title"><a href="#panel2">Two</a></li>
    </ul>
    <div class="tabs-content">
      <div class="tabs-panel is-active" id="panel1">…</div>
      <div class="tabs-panel" id="panel2">…</div>
    </div>
*/

/* --- Accordion --- */

.accordion {
  margin: 0 0 1.5rem;
}

.accordion-item {
  border-bottom: 1px solid color-mix(in srgb, var(--color-text) 20%, transparent);
}

.accordion-title {
  position: relative;
  display: block;
  padding: 1rem 2.25rem 1rem 0;
  cursor: pointer;
  font-family: inherit;
  font-size: 1.15rem;
  font-weight: 600;
  list-style: none;
}

.accordion-title::-webkit-details-marker {
  display: none;
}

.accordion-title::marker {
  content: "";
}

.accordion-title::after {
  position: absolute;
  top: 50%;
  right: 0;
  content: "+";
  font-weight: 400;
  line-height: 1;
  transform: translateY(-50%);
}

.accordion-item[open] > .accordion-title::after {
  content: "\2013";
}

.accordion-content {
  padding: 0 0 1.25rem;
}

.accordion-content > :last-child {
  margin-bottom: 0;
}

/* --- Tabs --- */

.tabs {
  display: flex;
  flex-wrap: wrap;
  margin: 0;
  padding: 0;
  list-style: none;
  border-bottom: 1px solid color-mix(in srgb, var(--color-text) 20%, transparent);
}

.tabs-title > a {
  display: block;
  padding: 0.75rem 1.1rem;
  color: inherit;
  text-decoration: none;
}

.tabs-title > a:hover,
.tabs-title.is-active > a,
.tabs-title > a[aria-selected="true"] {
  text-decoration: none;
  box-shadow: inset 0 -2px 0 var(--color-highlight);
}

.tabs-content {
  padding: 1.25rem 0;
}

.tabs-panel {
  display: none;
}

.tabs-panel.is-active {
  display: block;
}

.tabs-panel > :last-child {
  margin-bottom: 0;
}

/* --- Reveal (dialog) --- */

.reveal {
  position: relative;
  width: calc(100% - 2rem);
  max-width: 40rem;
  padding: 2rem 1.5rem 1.5rem;
  border: 0;
  border-radius: 6px;
  background: var(--color-surface);
}

.reveal::backdrop {
  background: rgba(19, 25, 44, 0.55);
}

.reveal.tiny { max-width: 20rem; }
.reveal.small { max-width: 30rem; }
.reveal.large { max-width: 60rem; }
.reveal.full {
  width: 100%;
  max-width: none;
  height: 100%;
  max-height: none;
  border-radius: 0;
}

.close-button {
  position: absolute;
  top: 0.35rem;
  right: 0.6rem;
  padding: 0.25rem;
  border: 0;
  background: transparent;
  font-size: 1.75rem;
  line-height: 1;
  cursor: pointer;
  color: inherit;
}