/* ==========================================================================
   Blockdaemon — navigation
   Light theme. Zero dependencies. All classes namespaced `bd-nav`.
   Shared colors/type/radius live in css/tokens.css on :root.
   ========================================================================== */

.bd-nav {
  /* Floors, never fixed values. `--bd-bar-h` is rewritten from the measured
     bar height so the mobile sheet stays anchored if the bar grows. */
  --bd-bar-h: 80px;
  --bd-bar-pad-y: 8px;
  --bd-logo-h: 36px;
  --bd-logo-split: 16px;
  --bd-bar-gap: 8px;
  --bd-proto-h: 32px;
  --bd-field-h: 48px;
  --bd-row-h: 48px;
  --bd-rail-w: clamp(200px, 16vw, 280px);
  --bd-aside-w: clamp(260px, 21vw, 340px);
  --bd-gap: 32px;
  --bd-col-card: 280px;
  --bd-col-proto: 220px;
  --bd-col-result: 360px;
  --bd-row-gap: 16px;
  --bd-col-gap: 20px;
  --bd-pad-row: 16px;
  /* One inset for the open surface: bar (search row) and panel share this,
     so the dropdown reads as a continuation of the bar, not a second box. */
  --bd-surface-pad: 24px;
  --bd-panel-pad: var(--bd-surface-pad);
  --bd-rule: #d5d7da;
}

.bd-nav,
.bd-nav *,
.bd-nav *::before,
.bd-nav *::after {
  box-sizing: border-box;
}

.bd-nav {
  position: fixed;
  top: 8px;
  left: var(--bd-page-pad, 20px);
  right: var(--bd-page-pad, 20px);
  z-index: 900;
  padding-inline: 0;
  font-family: var(--bd-font, InterVariable, sans-serif);
  font-size: var(--bd-text-base);
  font-weight: 400;
  font-feature-settings: "liga" 1, "calt" 1, "cv02", "cv03", "cv04", "cv11";
  font-optical-sizing: auto;
  line-height: 1.4;
  color: var(--bd-text);
}

.bd-nav ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.bd-nav a {
  color: inherit;
  text-decoration: none;
}

/* Do not zero padding or use `font:` shorthand here. This selector
   (class + element) beats every `.bd-nav__*` rule, which is why the
   tab hover used to hug the text while the card hover — an `<a>` —
   kept its padding. Reset only what the UA actually imposes. */
.bd-nav button {
  appearance: none;
  -webkit-appearance: none;
  margin: 0;
  border: 0;
  background: none;
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  color: inherit;
  cursor: pointer;
}

.bd-nav__sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.bd-nav :focus-visible {
  outline: 2px solid var(--bd-accent);
  outline-offset: 2px;
  border-radius: var(--bd-radius-sm);
}

/* Dim layer. z-index:-1 keeps it under the bar but, because `.bd-nav` owns
   the stacking context, still above all page content. */
.bd-nav__overlay {
  position: fixed;
  top: 50%;
  left: 50%;
  width: 200svw;
  height: 200svh;
  transform: translate(-50%, -50%);
  background: var(--bd-overlay);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--bd-dur) var(--bd-ease),
    visibility var(--bd-dur) var(--bd-ease);
  z-index: -1;
}

.bd-nav.is-open .bd-nav__overlay {
  opacity: 1;
  visibility: visible;
}

/* --------------------------------------------------------------------------
   BAR
   -------------------------------------------------------------------------- */
.bd-nav__bar {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--bd-bar-gap);
  width: 100%;
  max-width: var(--bd-content, 1440px);
  margin-inline: auto;
  min-height: var(--bd-bar-h);
  padding: var(--bd-bar-pad-y) var(--bd-surface-pad);
  background: var(--bd-bar-bg);
  border-radius: var(--bd-radius);
  transition: background var(--bd-dur) var(--bd-ease),
    border-radius var(--bd-dur) var(--bd-ease),
    padding var(--bd-dur) var(--bd-ease);
}

.bd-nav.is-open .bd-nav__bar {
  background: var(--bd-bar-bg-open);
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
  padding-bottom: 0;
}

.bd-nav__logo {
  position: relative;
  display: flex;
  align-items: center;
  flex: 0 0 auto;
  align-self: stretch;
  padding-inline: 0 var(--bd-logo-split);
  margin-inline-end: calc(var(--bd-logo-split) - var(--bd-bar-gap));
}

.bd-nav__logo::after {
  content: "";
  position: absolute;
  top: 50%;
  right: 0;
  width: 1px;
  height: var(--bd-field-h);
  transform: translateY(-50%);
  background: var(--bd-rule);
  pointer-events: none;
}

.bd-nav.is-open .bd-nav__logo {
  padding-inline-end: 0;
  margin-inline-end: 0;
}

.bd-nav.is-open .bd-nav__logo::after {
  display: none;
}

.bd-nav__logo-full,
.bd-nav__logo-mark {
  display: block;
  height: var(--bd-logo-h);
  width: auto;
  flex-shrink: 0;
  object-fit: contain;
}

.bd-nav__logo-mark {
  display: none;
  width: var(--bd-logo-h);
}

.bd-nav.is-open .bd-nav__logo-full,
.bd-nav.is-sheet .bd-nav__logo-full {
  display: none;
}

.bd-nav.is-open .bd-nav__logo-mark,
.bd-nav.is-sheet .bd-nav__logo-mark {
  display: block;
}

/* On desktop the drawer is transparent to layout: its two children (links and
   panels) behave as direct children of the bar. On mobile it becomes a sheet. */
.bd-nav__drawer {
  display: contents;
}

/* --- section links ------------------------------------------------------- */
/* The morph collapses this to zero width. It is a one-column grid rather than
   a `max-width` animation so the open width is whatever the links actually
   measure — add a fifth section and nothing here needs touching. */
.bd-nav__links {
  flex: 0 0 auto;
  align-self: stretch;
  display: grid;
  grid-template-columns: 1fr;
  margin-left: 0;
  opacity: 1;
  transition: grid-template-columns var(--bd-dur) var(--bd-ease),
    opacity var(--bd-dur) var(--bd-ease);
}

.bd-nav.is-open .bd-nav__links {
  grid-template-columns: 0fr;
  opacity: 0;
  margin-left: 0;
  pointer-events: none;
}

.bd-nav__list {
  display: flex;
  align-items: center;
  min-width: 0;
  height: 100%;
  overflow: hidden;
  white-space: nowrap;
}

.bd-nav__link {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 100%;
  padding-inline: 12px;
  font-size: var(--bd-text-base);
  font-weight: 500;
  color: var(--bd-text);
  transition: opacity var(--bd-dur) var(--bd-ease);
}

@media (min-width: 768px) {
  .bd-nav__item:first-child .bd-nav__link {
    padding-inline-start: 0;
  }
}

.bd-nav__link:hover {
  opacity: 0.6;
}

.bd-nav__link-arrow {
  width: 8px;
  height: 8px;
  fill: currentColor;
  transition: transform var(--bd-dur) var(--bd-ease);
}

.bd-nav__link[aria-expanded="true"] .bd-nav__link-arrow {
  transform: rotate(180deg);
}

/* --- search -------------------------------------------------------------- */
.bd-nav__search {
  flex: 1 1 auto;
  min-width: 0;
  margin-left: 0;
}

.bd-nav__search-form {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: var(--bd-field-h);
  padding-inline: 16px;
  background: transparent;
  border-radius: var(--bd-radius);
  transition: background var(--bd-dur) var(--bd-ease);
}

.bd-nav.is-open .bd-nav__search-form {
  background: var(--bd-surface);
}

.bd-nav__search-ico {
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  fill: var(--bd-text);
}

.bd-nav__search-input {
  flex: 1 1 auto;
  min-width: 0;
  height: 100%;
  border: 0;
  background: none;
  font: inherit;
  /* 16px also stops iOS Safari zooming the page on focus. */
  font-size: var(--bd-text-base);
  color: var(--bd-text);
}

.bd-nav__search-input:focus {
  outline: none;
}

.bd-nav__search-input::placeholder {
  color: var(--bd-text-2);
  opacity: 1;
}

.bd-nav__search-clear {
  display: none;
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  padding: 0;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--bd-bar-bg);
}

.bd-nav__search-clear svg {
  width: 8px;
  height: 8px;
  fill: var(--bd-text);
}

.bd-nav.has-query .bd-nav__search-clear {
  display: flex;
}

/* --- actions ------------------------------------------------------------- */
.bd-nav__actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
  margin-left: 0;
}

.bd-nav__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--bd-field-h);
  padding: 12px 20px;
  border-radius: var(--bd-radius-sm);
  font-size: var(--bd-text-base);
  font-weight: 500;
  white-space: nowrap;
  transition: background var(--bd-dur) var(--bd-ease),
    color var(--bd-dur) var(--bd-ease), opacity var(--bd-dur) var(--bd-ease);
}

.bd-nav__btn--ghost {
  color: var(--bd-text);
}

.bd-nav__btn--ghost:hover {
  background: var(--bd-surface);
}

.bd-nav a.bd-nav__btn--solid {
  background: var(--bd-accent);
  color: var(--bd-on-accent);
}

.bd-nav a.bd-nav__btn--solid:hover {
  background: var(--bd-accent-hi);
  color: var(--bd-on-accent);
}

.bd-nav__aside .bd-nav__btn--ghost:hover {
  background: var(--bd-bar-bg);
}

/* --- hamburger (mobile only) --------------------------------------------- */
.bd-nav__burger {
  display: none;
  flex: 0 0 auto;
  width: 44px;
  height: 44px;
  padding: 0;
  align-items: center;
  justify-content: center;
  border-radius: var(--bd-radius-sm);
}

.bd-nav__burger svg {
  width: 16px;
  height: 16px;
  fill: var(--bd-text);
}

/* --------------------------------------------------------------------------
   PANELS
   One absolutely positioned surface, same background as the bar, joined to it
   by `top: calc(100% - 1px)` so no subpixel seam shows between the two.
   -------------------------------------------------------------------------- */
.bd-nav__panels {
  position: absolute;
  top: calc(100% - 1px);
  left: 0;
  width: 100%;
  height: 0;
  overflow: hidden;
  background: var(--bd-bar-bg-open);
  border-bottom-left-radius: var(--bd-radius);
  border-bottom-right-radius: var(--bd-radius);
  opacity: 0;
  visibility: hidden;
  transition: height var(--bd-dur) var(--bd-ease),
    opacity var(--bd-dur) var(--bd-ease),
    visibility var(--bd-dur) var(--bd-ease);
  z-index: 1;
}

.bd-nav.is-open .bd-nav__panels {
  opacity: 1;
  visibility: visible;
}

.bd-nav__panel {
  display: none;
  padding: var(--bd-panel-pad);
}

.bd-nav__panel.is-active {
  display: block;
}

.bd-nav__panel-inner {
  display: flex;
  gap: var(--bd-gap);
  align-items: flex-start;
}

/* --- left rail of tabs --------------------------------------------------- */
.bd-nav__rail {
  position: relative;
  flex: 0 0 var(--bd-rail-w);
  width: var(--bd-rail-w);
  align-self: stretch;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.bd-nav__rail::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  right: calc(var(--bd-gap) / -2);
  width: 1px;
  transform: translateX(50%);
  background-color: var(--bd-rule);
  pointer-events: none;
}

.bd-nav__tab {
  display: block;
  width: 100%;
  padding: var(--bd-pad-row);
  border-radius: var(--bd-radius);
  text-align: left;
  transition: background var(--bd-dur) var(--bd-ease);
}

.bd-nav__tab:hover {
  background: var(--bd-surface);
}

.bd-nav__tab.is-active {
  background: var(--bd-surface);
}

.bd-nav__tab-title {
  display: block;
  font-size: var(--bd-text-base);
  font-weight: 500;
  line-height: 1.35;
  color: var(--bd-text);
  transition: font-weight var(--bd-dur) var(--bd-ease);
}

.bd-nav__tab.is-active .bd-nav__tab-title {
  font-weight: 600;
}

.bd-nav__tab-desc {
  display: block;
  margin-top: 8px;
  font-size: var(--bd-text-sm);
  line-height: 1.5;
  color: var(--bd-text-2);
}

/* --- panes --------------------------------------------------------------- */
.bd-nav__panes {
  flex: 1 1 auto;
  min-width: 0;
}

.bd-nav__pane {
  display: none;
  gap: var(--bd-gap);
  align-items: flex-start;
}

.bd-nav__pane.is-active {
  display: flex;
}

.bd-nav__grid {
  flex: 1 1 auto;
  min-width: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, var(--bd-col-card)), 1fr));
  gap: var(--bd-row-gap) var(--bd-col-gap);
  align-content: start;
}

.bd-nav__grid--protocols {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, var(--bd-col-proto)), 1fr));
  gap: 8px;
}

/* --- link card ----------------------------------------------------------- */
.bd-nav__card {
  display: block;
  padding: var(--bd-pad-row);
  border-radius: var(--bd-radius);
  transition: background var(--bd-dur) var(--bd-ease);
}

.bd-nav__card:hover {
  background: var(--bd-surface);
}

.bd-nav__card-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: var(--bd-text-base);
  font-weight: 500;
  line-height: 1.35;
  color: var(--bd-text);
  transition: font-weight var(--bd-dur) var(--bd-ease);
}

.bd-nav__card:hover .bd-nav__card-title {
  font-weight: 600;
}

.bd-nav__card-title svg {
  width: 8px;
  height: 8px;
  fill: currentColor;
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity var(--bd-dur) var(--bd-ease),
    transform var(--bd-dur) var(--bd-ease);
}

.bd-nav__card:hover .bd-nav__card-title svg {
  opacity: 1;
  transform: translateX(0);
}

.bd-nav__card-desc {
  display: block;
  margin-top: 8px;
  font-size: var(--bd-text-sm);
  line-height: 1.5;
  color: var(--bd-text-2);
}

/* --- protocol row -------------------------------------------------------- */
.bd-nav__proto {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: var(--bd-row-h);
  padding: 8px 12px;
  border-radius: var(--bd-radius);
  font-size: var(--bd-text-base);
  font-weight: 500;
  transition: background var(--bd-dur) var(--bd-ease);
}

.bd-nav__proto:hover {
  background: var(--bd-surface);
}

.bd-nav__proto-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 var(--bd-proto-h);
  width: var(--bd-proto-h);
  height: var(--bd-proto-h);
  border-radius: 50%;
  background: var(--bd-surface);
  font-size: var(--bd-text-sm);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--bd-text);
  transition: background var(--bd-dur) var(--bd-ease),
    color var(--bd-dur) var(--bd-ease);
}

.bd-nav__proto:hover .bd-nav__proto-mark {
  background: var(--bd-text);
  color: var(--bd-surface);
}

/* --- aside card ---------------------------------------------------------- */
.bd-nav__aside {
  flex: 0 0 var(--bd-aside-w);
  width: var(--bd-aside-w);
  padding: var(--bd-surface-pad);
  border-radius: var(--bd-radius);
  background: var(--bd-surface);
}

.bd-nav__aside-title {
  margin: 0 0 16px;
  font-size: var(--bd-text-sm);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--bd-text-2);
}

.bd-nav__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.bd-nav__chips li {
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--bd-bar-bg);
  font-size: var(--bd-text-sm);
  line-height: 1.4;
  color: var(--bd-text);
}

.bd-nav__aside-lead {
  margin: 0 0 20px;
  font-size: var(--bd-text-lead);
  font-weight: 500;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--bd-text);
}

.bd-nav__aside-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* --------------------------------------------------------------------------
   SEARCH RESULTS
   -------------------------------------------------------------------------- */
/* The pane is a flex row — without an explicit width this list shrink-wraps
   to one column and leaves the rest of the dropdown empty. */
.bd-nav__results {
  flex: 1 1 auto;
  width: 100%;
  min-width: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--bd-row-gap) var(--bd-col-gap);
  align-content: start;
}

.bd-nav__result-label {
  flex: 1 1 100%;
  padding: 8px 16px 0;
  font-size: var(--bd-text-sm);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--bd-text-2);
}

.bd-nav__result {
  flex: 1 1 var(--bd-col-result);
  min-width: min(100%, var(--bd-col-result));
  display: block;
  padding: var(--bd-pad-row);
  border-radius: var(--bd-radius);
  transition: background var(--bd-dur) var(--bd-ease);
}

.bd-nav__result:hover,
.bd-nav__result.is-cursor {
  background: var(--bd-surface);
}

.bd-nav__result-title {
  display: block;
  font-size: var(--bd-text-base);
  font-weight: 500;
  line-height: 1.35;
}

.bd-nav__result-title mark {
  background: none;
  color: var(--bd-accent);
  font-weight: 600;
}

.bd-nav__result-desc {
  display: block;
  margin-top: 8px;
  font-size: var(--bd-text-sm);
  line-height: 1.5;
  color: var(--bd-text-2);
}

.bd-nav__empty {
  flex: 1 1 100%;
  padding: 32px 16px;
  font-size: var(--bd-text-base);
  color: var(--bd-text-2);
}

/* --------------------------------------------------------------------------
   MOBILE BACK BAR — hidden until the sheet is in play
   -------------------------------------------------------------------------- */
.bd-nav__back {
  display: none;
  align-items: center;
  gap: 8px;
  width: 100%;
  min-height: 56px;
  padding: 12px 16px;
  font-size: var(--bd-text-base);
  font-weight: 600;
}

.bd-nav__back svg {
  width: 12px;
  height: 12px;
  fill: var(--bd-text);
  transform: rotate(90deg);
}

/* --------------------------------------------------------------------------
   RESPONSIVE
   -------------------------------------------------------------------------- */
@media (max-width: 1180px) {
  .bd-nav {
    --bd-gap: 20px;
  }

  .bd-nav__actions .bd-nav__btn--ghost {
    display: none;
  }
}

@media (max-width: 1023px) {
  .bd-nav__search {
    flex: 0 0 auto;
    margin-left: 0;
  }

  .bd-nav__search-form {
    padding-inline: 12px;
    cursor: text;
  }

  .bd-nav__search-input {
    flex: 0 0 0;
    width: 0;
    padding: 0;
  }

  .bd-nav__search-clear {
    display: none;
  }

  .bd-nav.is-open .bd-nav__search {
    flex: 1 1 auto;
  }

  .bd-nav.is-open .bd-nav__search-form {
    padding-inline: 16px;
  }

  .bd-nav.is-open .bd-nav__search-input {
    flex: 1 1 auto;
    width: auto;
  }

  .bd-nav.is-open.has-query .bd-nav__search-clear {
    display: flex;
  }

  /* Side by side, the rail + cards + aside squeeze the card column down to
     ~180px and every title wraps to three lines. Stack them instead: the rail
     becomes a chip row across the top, the aside drops below the links. */
  .bd-nav__panel-inner,
  .bd-nav__pane.is-active {
    display: block;
  }

  .bd-nav__rail {
    flex: none;
    width: auto;
    align-self: auto;
    display: flex;
    flex-direction: row;
    gap: 8px;
    margin-bottom: 16px;
    overflow-x: auto;
    scrollbar-width: none;
  }

  .bd-nav__rail::after {
    display: none;
  }

  .bd-nav__rail::-webkit-scrollbar {
    display: none;
  }

  .bd-nav__tab {
    width: auto;
    flex: 0 0 auto;
    padding: 8px 16px;
    background: var(--bd-bar-bg);
    white-space: nowrap;
  }

  .bd-nav__tab-desc {
    display: none;
  }

  .bd-nav__aside {
    flex: none;
    width: 100%;
    margin-top: 16px;
  }
}

@media (max-width: 767px) {
  .bd-nav {
    --bd-surface-pad: 16px;
    top: 0;
    left: 0;
    right: 0;
    padding-inline: 0;
  }

  .bd-nav__bar {
    max-width: none;
    border-radius: 0;
    padding: var(--bd-bar-pad-y) var(--bd-surface-pad);
  }

  .bd-nav.is-open .bd-nav__bar {
    border-radius: 0;
    padding-bottom: var(--bd-bar-pad-y);
  }

  .bd-nav__logo {
    padding-inline-end: 0;
    margin-inline-end: 0;
  }

  .bd-nav__logo::after {
    display: none;
  }

  .bd-nav__burger {
    display: flex;
    order: -1;
  }

  .bd-nav__actions {
    display: none;
  }

  .bd-nav__search {
    margin-left: 0;
  }

  .bd-nav__drawer {
    display: block;
    position: fixed;
    top: var(--bd-bar-h);
    left: 0;
    width: 100%;
    height: calc(100svh - var(--bd-bar-h));
    background: var(--bd-bg-page);
    transform: translateX(-100%);
    visibility: hidden;
    transition: transform var(--bd-dur) var(--bd-ease),
      visibility var(--bd-dur) var(--bd-ease);
    overflow: hidden;
  }

  .bd-nav.is-sheet .bd-nav__drawer {
    transform: translateX(0);
    visibility: visible;
  }

  .bd-nav__links,
  .bd-nav.is-open .bd-nav__links {
    position: absolute;
    inset: 0;
    display: block;
    height: auto;
    margin-left: 0;
    padding: var(--bd-surface-pad);
    opacity: 1;
    pointer-events: auto;
    overflow-y: auto;
    transition: none;
  }

  .bd-nav__list {
    display: block;
    height: auto;
    overflow: visible;
    white-space: normal;
  }

  .bd-nav__link {
    width: 100%;
    justify-content: space-between;
    min-height: 56px;
    padding: 12px 16px;
    border-radius: var(--bd-radius);
    font-size: var(--bd-text-base);
    font-weight: 500;
  }

  .bd-nav__link-arrow {
    width: 12px;
    height: 12px;
    transform: rotate(-90deg);
  }

  .bd-nav__link[aria-expanded="true"] .bd-nav__link-arrow {
    transform: rotate(-90deg);
  }

  .bd-nav__panels {
    position: absolute;
    inset: 0;
    top: 0;
    width: 100%;
    height: 100% !important;
    border-radius: 0;
    background: var(--bd-bg-page);
    opacity: 1;
    visibility: hidden;
    overflow-y: auto;
    transform: translateX(100%);
    transition: transform var(--bd-dur) var(--bd-ease),
      visibility var(--bd-dur) var(--bd-ease);
  }

  .bd-nav.is-open .bd-nav__panels {
    visibility: visible;
    transform: translateX(0);
  }

  .bd-nav__back {
    display: flex;
  }

  .bd-nav.is-search .bd-nav__back {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .bd-nav *,
  .bd-nav *::before,
  .bd-nav *::after {
    transition-duration: 0.01ms !important;
  }
}