/* Site chrome: header with section menus, version selector, search, sidebars,
   table of contents, footer and page motion. Material units: 1rem = 20px. */

/* ---------- Page background ---------- */

body {
  background:
    radial-gradient(1100px 520px at 18% -260px, color-mix(in srgb, var(--nac-brand) 16%, transparent), transparent 70%),
    radial-gradient(900px 420px at 92% -220px, color-mix(in srgb, var(--nac-amber) 9%, transparent), transparent 70%),
    var(--nac-bg);
  background-repeat: no-repeat;
}

.md-container,
.md-main {
  background: transparent;
}

::selection {
  background: color-mix(in srgb, var(--nac-brand) 34%, transparent);
}

:focus-visible {
  outline: 2px solid var(--nac-focus);
  outline-offset: 2px;
  border-radius: 6px;
}

/* ---------- Header ---------- */

.md-header.nac-header {
  position: sticky;
  top: 0;
  height: auto;
  color: var(--nac-text);
  background: color-mix(in srgb, var(--nac-bg) 70%, transparent);
  backdrop-filter: saturate(170%) blur(16px);
  -webkit-backdrop-filter: saturate(170%) blur(16px);
  border-bottom: 1px solid transparent;
  box-shadow: none;
  transition: border-color 0.3s var(--nac-ease), background 0.3s var(--nac-ease);
}

.md-header.nac-header.is-scrolled {
  border-bottom-color: var(--nac-edge);
  background: color-mix(in srgb, var(--nac-bg) 82%, transparent);
}

.nac-header__inner {
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: 1440px;
  height: 64px;
  margin: 0 auto;
  padding: 0 24px;
}

.nac-header .md-header__button {
  margin: 0;
  padding: 0;
}

.nac-header__drawer {
  display: none;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  color: var(--nac-text-2);
}

.nac-header__drawer svg {
  width: 22px;
  height: 22px;
}

/* Brand */

.nac-brand.md-logo {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0;
  padding: 4px 6px 4px 2px;
  border-radius: 10px;
  color: var(--nac-text);
  text-decoration: none;
}

.nac-brand img.nac-mark {
  width: 32px;
  height: 32px;
  transition: transform 0.4s var(--nac-ease);
}

.nac-brand:hover img.nac-mark {
  transform: rotate(-8deg) scale(1.06);
}

.nac-brand__name {
  color: var(--nac-text);
  font-size: 17px;
  font-weight: 750;
  letter-spacing: -0.03em;
  white-space: nowrap;
}

.md-logo img.nac-mark.nac-mark--light,
[data-md-color-scheme="default"] .md-logo img.nac-mark.nac-mark--dark {
  display: none;
}

[data-md-color-scheme="default"] .md-logo img.nac-mark.nac-mark--light {
  display: block;
}

/* Version selector */

.nac-version {
  position: relative;
}

.nac-version__button {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  height: 26px;
  padding: 0 8px 0 10px;
  border: 1px solid var(--nac-edge);
  border-radius: 999px;
  background: var(--nac-surface-1);
  color: var(--nac-text-2);
  font: 500 12px/1 var(--nac-font-mono);
  cursor: pointer;
  transition: border-color 0.2s var(--nac-ease), color 0.2s var(--nac-ease), background 0.2s var(--nac-ease);
}

.nac-version__button svg {
  width: 14px;
  height: 14px;
  transition: transform 0.25s var(--nac-ease);
}

.nac-version__button:hover,
.nac-version.is-open .nac-version__button {
  border-color: color-mix(in srgb, var(--nac-brand) 60%, var(--nac-edge));
  color: var(--nac-text);
  background: var(--nac-surface-2);
}

.nac-version.is-open .nac-version__button svg {
  transform: rotate(180deg);
}

.nac-version__menu {
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  z-index: 10;
  width: 240px;
  padding: 8px;
  border: 1px solid var(--nac-edge);
  border-radius: 14px;
  background: var(--nac-surface-1);
  box-shadow: var(--nac-shadow-3);
  transform-origin: top left;
  animation: nac-pop 0.18s var(--nac-ease);
}

.nac-version__menu[hidden] {
  display: none;
}

.nac-version__heading {
  margin: 4px 8px 6px;
  color: var(--nac-text-3);
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nac-version__list {
  max-height: 320px;
  margin: 0;
  padding: 0;
  overflow-y: auto;
  list-style: none;
  scrollbar-width: thin;
}

.nac-version__item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  border-radius: 8px;
  color: var(--nac-text-2);
  font: 500 13px/1.2 var(--nac-font-mono);
  text-decoration: none;
  transition: background 0.15s var(--nac-ease), color 0.15s var(--nac-ease);
}

a.nac-version__item:hover {
  background: var(--nac-surface-2);
  color: var(--nac-text);
}

.nac-version__item.is-current {
  background: var(--nac-brand-tint);
  color: var(--nac-text);
}

.nac-version__badge {
  margin-left: auto;
  padding: 2px 6px;
  border-radius: 999px;
  font: 600 10px/1.3 var(--nac-font-sans);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.nac-version__badge--latest {
  background: color-mix(in srgb, var(--nac-green) 18%, transparent);
  color: var(--nac-green);
}

.nac-version__badge--preview {
  background: var(--nac-amber-tint);
  color: var(--nac-amber);
}

.nac-version__note {
  padding: 8px 10px 4px;
  color: var(--nac-text-3);
  font-size: 12px;
}

/* Section links with hover menus */

.nac-nav {
  display: flex;
  align-items: center;
  gap: 2px;
  margin: 0 0 0 14px;
  padding: 0;
  list-style: none;
}

.nac-nav__item {
  position: relative;
}

.nac-nav__link {
  position: relative;
  display: block;
  padding: 8px 12px;
  border-radius: 9px;
  color: var(--nac-text-2);
  font-size: 14px;
  font-weight: 550;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s var(--nac-ease), background 0.2s var(--nac-ease);
}

.nac-nav__link::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: var(--nac-wordmark);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--nac-ease);
}

.nac-nav__item:hover > .nac-nav__link,
.nac-nav__item.is-open > .nac-nav__link {
  color: var(--nac-text);
  background: var(--nac-surface-2);
}

.nac-nav__item.is-active > .nac-nav__link {
  color: var(--nac-text);
}

.nac-nav__item.is-active > .nac-nav__link::after {
  transform: scaleX(1);
}

.nac-menu {
  position: absolute;
  top: 100%;
  left: -8px;
  z-index: 20;
  padding-top: 10px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px) scale(0.98);
  transform-origin: top left;
  transition:
    opacity 0.18s var(--nac-ease),
    transform 0.22s var(--nac-ease),
    visibility 0s linear 0.22s;
  pointer-events: none;
}

.nac-nav__item.is-open > .nac-menu {
  opacity: 1;
  visibility: visible;
  transform: none;
  transition-delay: 0s;
  pointer-events: auto;
}

.nac-menu__panel {
  display: grid;
  gap: 4px;
  min-width: 300px;
  max-width: calc(100vw - 48px);
  padding: 10px;
  border: 1px solid var(--nac-edge);
  border-radius: 16px;
  background: var(--nac-surface-1);
  box-shadow: var(--nac-shadow-3);
}

.nac-menu--wide .nac-menu__panel {
  grid-template-columns: repeat(5, minmax(150px, 1fr));
  gap: 4px 6px;
  width: min(900px, calc(100vw - 48px));
}

.nac-menu--wide .nac-menu__link {
  padding: 6px 10px;
}

.nac-menu--wide .nac-menu__title {
  font-size: 13.5px;
  font-weight: 560;
  color: var(--nac-text-2);
}

.nac-menu__group {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nac-menu__heading {
  margin: 6px 10px 4px;
  color: var(--nac-text-3);
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nac-menu__link {
  display: block;
  padding: 9px 12px;
  border-radius: 10px;
  color: var(--nac-text);
  text-decoration: none;
  transition: background 0.15s var(--nac-ease), transform 0.15s var(--nac-ease);
}

.nac-menu__link:hover,
.nac-menu__link:focus-visible {
  background: var(--nac-surface-2);
  transform: translateX(2px);
}

.nac-menu__title {
  display: block;
  font-size: 14px;
  font-weight: 620;
  line-height: 1.3;
  transition: color 0.15s var(--nac-ease);
}

.nac-menu__link:hover .nac-menu__title,
.nac-menu__link.is-active .nac-menu__title {
  color: var(--nac-link);
}

.nac-menu__desc {
  display: -webkit-box;
  margin-top: 2px;
  overflow: hidden;
  color: var(--nac-text-3);
  font-size: 12.5px;
  line-height: 1.4;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

/* Actions */

.nac-header__actions {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
}

.nac-header .md-search {
  display: block;
  position: static;
  width: auto;
  margin: 0;
}

.nac-header .md-search__button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: 230px;
  height: 36px;
  margin: 0;
  padding: 0 8px 0 36px;
  border: 1px solid var(--nac-edge);
  border-radius: 10px;
  background:
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23888395' stroke-width='2' stroke-linecap='round'><circle cx='11' cy='11' r='7'/><path d='m20 20-3.5-3.5'/></svg>") 11px 50% / 16px no-repeat,
    var(--nac-surface-1);
  color: var(--nac-text-3);
  font: 500 13.5px/1 var(--nac-font-sans);
  text-align: left;
  cursor: pointer;
  transition: border-color 0.2s var(--nac-ease), background-color 0.2s var(--nac-ease), box-shadow 0.2s var(--nac-ease);
}

.nac-header .md-search__button::before,
.nac-header .md-search__button::after {
  display: none;
}

.nac-header .md-search__button:hover {
  border-color: color-mix(in srgb, var(--nac-brand) 50%, var(--nac-edge));
  box-shadow: 0 0 0 4px var(--nac-brand-tint);
}

.nac-search__kbd {
  margin-left: auto;
  padding: 3px 6px;
  border: 1px solid var(--nac-edge);
  border-radius: 6px;
  background: var(--nac-surface-2);
  color: var(--nac-text-3);
  font: 500 11px/1 var(--nac-font-mono);
}

.nac-header .md-header__option {
  display: flex;
  margin: 0;
}

.nac-header .md-header__option .md-header__button,
.nac-header__icon {
  display: inline-flex;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  color: var(--nac-text-2);
  transition: color 0.2s var(--nac-ease), background 0.2s var(--nac-ease), transform 0.3s var(--nac-ease);
}

.nac-header .md-header__option label.md-header__button:not([hidden]) {
  display: inline-flex;
}

.nac-header .md-header__option .md-header__button:hover,
.nac-header__icon:hover {
  color: var(--nac-text);
  background: var(--nac-surface-2);
}

.nac-header .md-header__option .md-header__button:active {
  transform: rotate(-30deg) scale(0.92);
}

.nac-header .md-header__option .md-header__button[hidden] {
  display: none;
}

.nac-header .md-header__option .md-header__button svg,
.nac-header__icon svg {
  width: 19px;
  height: 19px;
}

@media screen and (max-width: 76.2344em) {
  .nac-nav {
    display: none;
  }

  .nac-header__drawer {
    display: inline-flex;
  }

  .nac-header__inner {
    padding: 0 12px;
  }
}

@media screen and (max-width: 44.9844em) {
  .nac-header .md-search__button {
    width: 36px;
    padding: 0;
    font-size: 0;
    background-position: 50% 50%;
  }

  .nac-search__kbd,
  .nac-brand__name {
    display: none;
  }
}

/* ---------- Banners ---------- */

.md-banner {
  background: var(--nac-surface-1);
  color: var(--nac-text);
  border-bottom: 1px solid var(--nac-edge);
}

.md-banner--warning {
  background: var(--nac-amber-tint);
  color: var(--nac-text);
  border-bottom-color: color-mix(in srgb, var(--nac-amber) 40%, transparent);
}

.md-banner--warning a {
  margin-left: 12px;
  color: var(--nac-link);
  font-weight: 650;
}

.md-banner__inner {
  margin: 9px auto;
  font-size: 14px;
}

/* ---------- Layout ---------- */

.md-grid {
  max-width: 1440px;
}

.md-main__inner {
  margin-top: 28px;
}

.md-content {
  min-width: 0;
}

.md-content__inner {
  max-width: 780px;
  margin: 0 auto 64px;
  padding: 0 32px;
}

.md-content__inner::before {
  display: none;
}

@media screen and (max-width: 44.9844em) {
  .md-content__inner {
    padding: 0 16px;
  }
}

/* ---------- Primary sidebar ---------- */

@media screen and (min-width: 76.25em) {
  .md-sidebar {
    top: 76px;
  }

  .md-sidebar--primary {
    width: 272px;
  }
}

.md-sidebar__scrollwrap {
  scrollbar-width: thin;
  scrollbar-color: var(--nac-edge) transparent;
}

.md-nav {
  font-size: 14px;
  line-height: 1.4;
}

.md-nav__title {
  color: var(--nac-text-3);
}

.md-nav__item {
  padding: 0;
}

.md-nav__link {
  position: relative;
  margin: 1px 0;
  padding: 6px 10px;
  border-radius: 8px;
  color: var(--nac-text-2);
  transition: color 0.15s var(--nac-ease), background 0.15s var(--nac-ease);
}

.md-nav__link:hover,
.md-nav__link:focus-visible {
  color: var(--nac-text);
  background: var(--nac-surface-2);
}

.md-sidebar--primary .md-nav__link--active,
.md-sidebar--primary .md-nav__item--active > .md-nav__link:not(.md-nav__container > .md-nav__link) {
  color: var(--nac-text);
  font-weight: 620;
}

.md-sidebar--primary .md-nav__link--active {
  background: var(--nac-brand-tint);
}

.md-sidebar--primary .md-nav__link--active::before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  bottom: 7px;
  width: 3px;
  border-radius: 3px;
  background: var(--nac-wordmark);
  animation: nac-grow 0.35s var(--nac-ease);
}

/* Group labels (Data, Endpoints, …) */
.md-sidebar--primary .md-nav__item--section > .md-nav__link {
  margin-top: 18px;
  padding: 4px 10px;
  color: var(--nac-text-3);
  background: none;
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  pointer-events: none;
}

.md-sidebar--primary .md-nav__item--section > .md-nav__link .md-nav__icon {
  display: none;
}

.md-sidebar--primary .md-nav__item--section > .md-nav {
  margin-left: 0;
}

.md-sidebar--primary .md-nav__item--nested:not(.md-nav__item--section) > .md-nav > .md-nav__list {
  margin-left: 12px;
  padding-left: 8px;
  border-left: 1px solid var(--nac-edge);
}

.md-sidebar--primary .md-nav--primary > .md-nav__list > .md-nav__item > .md-nav > .md-nav__list {
  border-left: 0;
  margin-left: 0;
  padding-left: 0;
}

.md-sidebar--primary .md-nav--primary > .md-nav__list > .md-nav__item--active > .md-nav__link {
  margin-bottom: 4px;
  padding: 4px 10px;
  color: var(--nac-text);
  background: none;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

@media screen and (min-width: 76.25em) {
  .md-nav--primary > .md-nav__title {
    display: none;
  }
}

@media screen and (max-width: 76.2344em) {
  .md-sidebar--primary {
    background: var(--nac-bg);
  }

  .md-nav--primary .md-nav__title {
    background: var(--nac-surface-1);
    color: var(--nac-text);
  }
}

/* ---------- Table of contents ---------- */

.md-sidebar--secondary .md-nav--secondary > .md-nav__title {
  padding: 0 0 8px 14px;
  color: var(--nac-text-3);
  background: none;
  box-shadow: none;
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.md-sidebar--secondary .md-nav--secondary > .md-nav__list {
  position: relative;
  border-left: 1px solid var(--nac-edge);
}

.md-sidebar--secondary .md-nav__link {
  margin: 0;
  padding: 4px 10px 4px 14px;
  border-radius: 0;
  color: var(--nac-text-3);
  background: none;
  font-size: 13px;
}

.md-sidebar--secondary .md-nav__link:hover {
  color: var(--nac-text);
  background: none;
}

.md-sidebar--secondary .md-nav__link--active {
  color: var(--nac-text);
}

.nac-toc-marker {
  position: absolute;
  top: 0;
  left: -1px;
  width: 2px;
  border-radius: 2px;
  background: var(--nac-wordmark);
  opacity: 0;
  transition: transform 0.3s var(--nac-ease), height 0.3s var(--nac-ease), opacity 0.2s;
}

/* ---------- Breadcrumbs ---------- */

.md-path {
  margin-bottom: 14px;
  font-size: 13px;
}

.md-path__link {
  color: var(--nac-text-3);
}

.md-path__link:hover {
  color: var(--nac-text);
}

/* ---------- Footer ---------- */

.md-footer {
  background: transparent;
  color: var(--nac-text);
}

.md-footer__inner {
  max-width: 780px;
  padding: 8px 32px 40px;
  gap: 16px;
}

.md-footer__link {
  flex: 1;
  padding: 16px 18px;
  border: 1px solid var(--nac-edge);
  border-radius: 14px;
  background: var(--nac-surface-1);
  opacity: 1;
  transition: border-color 0.2s var(--nac-ease), transform 0.25s var(--nac-ease), box-shadow 0.25s var(--nac-ease);
}

.md-footer__link:hover,
.md-footer__link:focus-visible {
  border-color: color-mix(in srgb, var(--nac-brand) 55%, var(--nac-edge));
  box-shadow: var(--nac-shadow-2);
  transform: translateY(-2px);
  opacity: 1;
}

.md-footer__link--next {
  text-align: right;
}

.md-footer__title {
  font-size: 16px;
  font-weight: 700;
}

.md-footer__direction {
  color: var(--nac-text-3);
  font-size: 12px;
  opacity: 1;
}

.md-footer__button {
  transition: transform 0.25s var(--nac-ease);
}

.md-footer__link--prev:hover .md-footer__button {
  transform: translateX(-3px);
}

.md-footer__link--next:hover .md-footer__button {
  transform: translateX(3px);
}

.md-footer-meta {
  background: transparent;
  border-top: 1px solid var(--nac-edge);
}

.md-footer-meta,
.md-copyright,
.md-copyright__highlight {
  color: var(--nac-text-3);
}

.md-social__link {
  color: var(--nac-text-3);
  transition: color 0.2s var(--nac-ease), transform 0.2s var(--nac-ease);
}

.md-social__link:hover {
  color: var(--nac-text);
  transform: translateY(-2px);
}

.md-top {
  border: 1px solid var(--nac-edge);
  background: var(--nac-surface-2);
  color: var(--nac-text);
  box-shadow: var(--nac-shadow-2);
}

.md-top:hover {
  background: var(--nac-surface-3);
  color: var(--nac-text);
}

/* ---------- Motion ---------- */

.nac-enter {
  animation: nac-rise 0.45s var(--nac-ease) both;
}

@keyframes nac-rise {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
}

@keyframes nac-pop {
  from {
    opacity: 0;
    transform: translateY(-4px) scale(0.97);
  }
}

@keyframes nac-grow {
  from {
    transform: scaleY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
}

.nac-hidden {
  display: none !important;
}

/* Material search (legacy builds): header pill that opens as a centered dialog. */
@media screen and (min-width: 60em) {
  .nac-header .md-search__inner {
    width: 230px;
    padding: 0;
    float: none;
  }

  .nac-header .md-search__form {
    height: 36px;
    border: 1px solid var(--nac-edge-strong);
    border-radius: 10px;
    background: var(--nac-surface-1);
    box-shadow: none;
  }

  .nac-header .md-search__input {
    height: 34px;
    font-size: 14px;
  }

  .nac-header .md-search__input::placeholder {
    color: var(--nac-text-3);
  }

  [data-md-toggle="search"]:checked ~ .md-header .md-search__inner {
    position: fixed;
    top: 12vh;
    left: 50%;
    z-index: 5;
    width: min(720px, 92vw);
    transform: translateX(-50%);
  }

  [data-md-toggle="search"]:checked ~ .md-header .md-search__form {
    height: 48px;
    border-color: var(--nac-brand);
    border-radius: 14px 14px 0 0;
    background: var(--nac-surface-2);
  }

  [data-md-toggle="search"]:checked ~ .md-header .md-search__input {
    height: 46px;
    font-size: 16px;
  }

  .nac-header .md-search__output {
    border: 1px solid var(--nac-edge-strong);
    border-top: 0;
    border-radius: 0 0 14px 14px;
    background: var(--nac-surface-1);
    box-shadow: var(--nac-shadow-3);
  }
}

.nac-brand {
  flex: none;
}


/* Older versions have up to 7 top-level sections: tighten the header to fit. */
.nac-nav:has(> .nac-nav__item:nth-child(7)) {
  margin-left: 8px;
}

.nac-nav:has(> .nac-nav__item:nth-child(7)) .nac-nav__link {
  padding-inline: 7px;
}

@media screen and (max-width: 89.9375em) {
  .nac-header__inner:has(.nac-nav__item:nth-child(7)) .nac-brand__name {
    display: none;
  }
}

.nac-header .md-search__icon[for="__search"] {
  color: var(--nac-text-3);
}

@media screen and (min-width: 60em) {
  .nac-header__inner:has(.nac-nav__item:nth-child(7)) .md-search__inner {
    width: 200px;
  }
}