/* Shared directory and reading frame; content styles stay with each exporter. */
.dt-layout {
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr);
  min-height: 100vh;
  align-items: start;
}

.dt-reading {
  min-width: 0;
  padding: 24px 32px 40px;
}

.dt-directory {
  min-width: 0;
  padding: 18px 14px 28px;
  background: #0c1216;
  border-right: 1px solid #26383f;
  color: #bac6ca;
  overflow-wrap: anywhere;
}

.dt-directory summary {
  min-height: 44px;
  padding: 9px 6px;
  cursor: pointer;
  font-size: 14px;
}

.dt-directory summary::marker {
  color: #8da2aa;
}

.dt-directory a {
  display: block;
  min-height: 44px;
  padding: 9px 10px;
  color: #a8bbc2;
  font-size: 14px;
  line-height: 1.7;
  text-decoration: none;
}

.dt-directory a:hover,
.dt-directory summary:hover {
  color: #d2dadd;
  background: #10191e;
}

.dt-directory a[aria-current="page"] {
  color: #8bc7d1;
  background: #17292f;
  box-shadow: inset 2px 0 #76b9c4;
}

.dt-directory a:focus-visible,
.dt-directory summary:focus-visible {
  outline: 2px solid #76b9c4;
  outline-offset: 2px;
}

.dt-level {
  margin-left: 8px;
  padding-left: 10px;
  border-left: 1px solid #26383f;
}

.dt-directory .dt-brand {
  color: #d2dadd;
  font-family: Cambria, Georgia, serif;
  font-size: 22px;
}

.dt-directory small {
  display: block;
  color: #8da2aa;
  font-size: 11px;
}

.dt-directory-note {
  margin: 18px 6px 0;
  padding-top: 14px;
  border-top: 1px solid #26383f;
  color: #8da2aa;
  font-size: 12px;
}

@media (min-width: 901px) {
  .dt-directory {
    position: sticky;
    top: 0;
    max-height: 100vh;
    overflow-y: auto;
    scrollbar-color: #26383f #0c1216;
  }

  .dt-directory > summary {
    display: none;
  }

  .dt-directory::details-content {
    content-visibility: visible;
  }

  .dt-directory:not([open]) > nav {
    display: block;
  }
}

@media (max-width: 900px) {
  .dt-layout {
    display: block;
  }

  .dt-directory {
    border-right: 0;
    border-bottom: 1px solid #26383f;
    padding: 8px 14px;
  }

  .dt-reading {
    padding: 20px 18px 32px;
  }
}