/*
  Shared sticky in-page navigation.
  The guide table of contents and calculator index both use this component.
*/

.in-page-nav-column {
  align-self: start;
  grid-area: toc;
  position: sticky;
  top: var(--space-xl);
}

.in-page-nav-panel {
  background: linear-gradient(180deg, rgb(23 19 15 / 0.98), rgb(9 9 9 / 0.98));
  border: 1px solid rgb(188 168 108 / 0.32);
  border-radius: var(--radius-md);
  box-shadow: 0 0.8rem 2rem rgb(0 0 0 / 0.3);
  max-height: calc(100vh - (var(--space-xl) * 2));
  overflow: auto;
  scrollbar-color: rgb(188 168 108 / 0.28) transparent;
  scrollbar-width: thin;
}

.in-page-nav-panel::-webkit-scrollbar {
  height: 6px;
  width: 6px;
}

.in-page-nav-panel::-webkit-scrollbar-track {
  background: transparent;
}

.in-page-nav-panel::-webkit-scrollbar-thumb {
  background-color: rgb(188 168 108 / 0.24);
  border-radius: 999px;
}

.in-page-nav-panel:hover,
.in-page-nav-panel:focus-within {
  scrollbar-color: rgb(188 168 108 / 0.42) transparent;
}

.in-page-nav-panel:hover::-webkit-scrollbar-thumb,
.in-page-nav-panel:focus-within::-webkit-scrollbar-thumb {
  background-color: rgb(188 168 108 / 0.38);
}

.in-page-nav-summary {
  align-items: center;
  color: var(--color-text);
  cursor: pointer;
  display: flex;
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  gap: var(--space-sm);
  justify-content: space-between;
  list-style: none;
  padding: var(--space-md);
}

.in-page-nav-summary::-webkit-details-marker {
  display: none;
}

.in-page-nav-summary::after {
  color: var(--color-accent);
  content: "+";
  font-family: var(--font-base);
  font-size: 1.2rem;
  font-weight: 500;
  line-height: 1;
}

.in-page-nav-panel[open] .in-page-nav-summary::after {
  content: "−";
}

.in-page-nav {
  border-top: 1px solid rgb(188 168 108 / 0.2);
  padding: var(--space-sm);
}

.in-page-nav-placeholder {
  color: var(--color-text-muted);
  font-size: 0.78rem;
  font-style: italic;
  margin: 0;
}

.in-page-nav .in-page-nav-list,
.in-page-nav .in-page-nav-sublist {
  counter-reset: in-page-nav-item;
  display: grid;
  gap: 0.14rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.in-page-nav .in-page-nav-sublist {
  border-left: 1px solid rgb(188 168 108 / 0.2);
  margin: 0.18rem 0 0.18rem 0.68rem;
  padding-left: 0.42rem;
}

.in-page-nav .in-page-nav-item {
  counter-increment: in-page-nav-item;
  min-width: 0;
}

.in-page-nav .in-page-nav-link {
  align-items: baseline;
  border-left: 2px solid transparent;
  border-radius: 0.25rem;
  color: var(--color-text-soft);
  display: grid;
  font-size: 0.78rem;
  gap: 0.38rem;
  grid-template-columns: auto minmax(0, 1fr);
  line-height: 1.3;
  min-width: 0;
  padding: 0.36rem 0.4rem;
}

.in-page-nav .in-page-nav-link::before {
  color: var(--color-text-muted);
  content: counters(in-page-nav-item, ".") ".";
  font-family: Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.7rem;
}

.in-page-nav .in-page-nav-link:hover,
.in-page-nav .in-page-nav-link:focus-visible,
.in-page-nav .in-page-nav-link.is-active {
  background-color: rgb(255 128 0 / 0.09);
  border-left-color: var(--color-accent);
  color: var(--color-accent);
}

.in-page-nav .in-page-nav-link.is-active::before {
  color: var(--color-accent);
}

@media (max-width: 1120px) {
  .in-page-nav-column {
    position: static;
  }

  .in-page-nav-panel {
    max-height: none;
  }

  .in-page-nav > .in-page-nav-list {
    column-count: 2;
    column-gap: var(--space-lg);
    display: block;
  }

  .in-page-nav > .in-page-nav-list > .in-page-nav-item {
    break-inside: avoid;
    margin-bottom: 0.14rem;
  }
}

@media (max-width: 700px) {
  .in-page-nav > .in-page-nav-list {
    column-count: 1;
  }
}