/* ----------------------------- */
/* Clean MkDocs Material sidebar */
/* ----------------------------- */

.md-sidebar--primary {
  border-right: 1px solid var(--md-default-fg-color--lightest);
}

/* Reset heavy custom styling */
.md-nav--primary .md-nav__link {
  margin: 0;
  padding: 0.28rem 0.55rem;
  border-radius: 0.35rem;
  font-size: 0.72rem;
  line-height: 1.35;
  transition:
    background-color 120ms ease,
    color 120ms ease;
}

/* Normal hover */
.md-nav--primary .md-nav__link:hover {
  background: var(--md-default-fg-color--lightest);
}

/* Active page: subtle pill + left accent */
.md-nav--primary .md-nav__link--active,
.md-nav--primary .md-nav__item--active > .md-nav__link {
  position: relative;
  background: var(--md-accent-fg-color--transparent);
  color: var(--md-accent-fg-color);
  font-weight: 700;
}

.md-nav--primary .md-nav__link--active::before,
.md-nav--primary .md-nav__item--active > .md-nav__link::before {
  content: "";
  position: absolute;
  left: -0.45rem;
  top: 0.35rem;
  bottom: 0.35rem;
  width: 0.15rem;
  border-radius: 999px;
  background: var(--md-accent-fg-color);
}

/* Section labels should stay plain even when their subtree is active */
.md-nav--primary > .md-nav__list > .md-nav__item > .md-nav__link,
.md-nav--primary > .md-nav__list > .md-nav__item > label.md-nav__link,
.md-nav--primary .md-nav__item--section > .md-nav__link,
.md-nav--primary .md-nav__item--section > label.md-nav__link {
  position: static;
}

.md-nav--primary > .md-nav__list > .md-nav__item.md-nav__item--active > .md-nav__link,
.md-nav--primary > .md-nav__list > .md-nav__item.md-nav__item--active > label.md-nav__link,
.md-nav--primary .md-nav__item--section.md-nav__item--active > .md-nav__link,
.md-nav--primary .md-nav__item--section.md-nav__item--active > label.md-nav__link {
  background: transparent;
  color: var(--md-default-fg-color--light);
}

.md-nav--primary > .md-nav__list > .md-nav__item.md-nav__item--active > .md-nav__link::before,
.md-nav--primary > .md-nav__list > .md-nav__item.md-nav__item--active > label.md-nav__link::before,
.md-nav--primary .md-nav__item--section.md-nav__item--active > .md-nav__link::before,
.md-nav--primary .md-nav__item--section.md-nav__item--active > label.md-nav__link::before {
  content: none;
}

/* Top-level sections: Lua Widgets, Runtime, Internals */
.md-nav--primary > .md-nav__list > .md-nav__item > .md-nav__link,
.md-nav--primary > .md-nav__list > .md-nav__item > label.md-nav__link {
  margin-top: 1.1rem;
  margin-bottom: 0.25rem;
  padding: 0;
  background: transparent;
  color: var(--md-default-fg-color--light);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

/* Subsection headings: Guides, Reference, Architecture, Agents */
.md-nav--primary .md-nav__item--section > .md-nav__link,
.md-nav--primary .md-nav__item--section > label.md-nav__link {
  margin-top: 0.85rem;
  margin-bottom: 0.25rem;
  padding: 0;
  background: transparent;
  color: var(--md-default-fg-color--light);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* Nested lists: cleaner indentation, no timeline look */
.md-nav--primary .md-nav__list .md-nav__list {
  margin-left: 0.35rem;
  padding-left: 0.45rem;
  border-left: 1px solid var(--md-default-fg-color--lightest);
}

/* Avoid double-heavy nested borders */
.md-nav--primary .md-nav__list .md-nav__list .md-nav__list {
  border-left: none;
}

/* Less giant vertical spacing */
.md-nav--primary .md-nav__item {
  margin: 0.08rem 0;
}