/* 15 named responsive navbar patterns */

/* Shared burger icon bars */
.nav-burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0.55rem;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  background: var(--surface-raised);
  cursor: pointer;
}

.nav-burger span {
  display: block;
  height: 2px;
  border-radius: 1px;
  background: var(--ink);
  transition: transform var(--motion), opacity var(--motion);
}

.nav-check {
  position: absolute;
  opacity: 0;
  pointer-events: none;
  width: 0;
  height: 0;
}

.nav-check:focus-visible + .nav-burger {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.nav-announce-stack__banner[hidden] {
  display: none !important;
}

/* Keep burger icon morph working when check is not a direct previous sibling of label in all trees */
.nav-check:checked + .nav-burger span:nth-child(1),
:has(> .nav-check:checked) > .nav-burger span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-check:checked + .nav-burger span:nth-child(2),
:has(> .nav-check:checked) > .nav-burger span:nth-child(2) {
  opacity: 0;
}

.nav-check:checked + .nav-burger span:nth-child(3),
:has(> .nav-check:checked) > .nav-burger span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ========== 1. Classic Brand Bar ========== */
.nav-classic-brand {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1rem;
  padding: 0.75rem 1.25rem;
  background: var(--surface-raised);
  border-bottom: 1px solid var(--border);
}

.nav-classic-brand__brand {
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--accent-deep);
}

.nav-classic-brand__panel {
  display: flex;
  flex: 1;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 0.35rem 1.25rem;
}

.nav-classic-brand__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-classic-brand__links a {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--ink-muted);
}

.nav-classic-brand__links a:hover,
.nav-classic-brand__links a[aria-current="page"] {
  color: var(--accent-deep);
}

.nav-classic-brand .nav-burger {
  margin-left: auto;
}

@media (max-width: 48rem) {
  .nav-classic-brand .nav-burger {
    display: flex;
  }

  .nav-classic-brand__panel {
    display: none;
    flex-basis: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border);
  }

  .nav-classic-brand__links {
    flex-direction: column;
    gap: 0;
  }

  .nav-classic-brand__links a {
    display: block;
    padding: 0.65rem 0;
    border-bottom: 1px solid var(--border);
  }

  .nav-classic-brand:has(.nav-check:checked) .nav-classic-brand__panel {
    display: flex;
  }

  .nav-classic-brand__panel .nav-btn {
    width: 100%;
  }
}

/* ========== 2. Split Cluster Nav ========== */
.nav-split-cluster {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.25rem;
  background: var(--surface-raised);
  border-bottom: 1px solid var(--border);
}

.nav-split-cluster__brand {
  font-weight: 800;
  color: var(--accent-deep);
}

.nav-split-cluster__primary,
.nav-split-cluster__utility {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-split-cluster__panel {
  display: flex;
  flex: 1;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1rem;
  min-width: 0;
}

.nav-split-cluster__primary {
  flex: 1;
  margin-left: 0;
}

.nav-split-cluster__primary a,
.nav-split-cluster__utility a {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--ink-muted);
}

.nav-split-cluster__avatar {
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  object-fit: cover;
  background: var(--border);
}

.nav-split-cluster .nav-burger {
  margin-left: auto;
}

.nav-split-cluster__group-label {
  display: none;
}

@media (max-width: 48rem) {
  .nav-split-cluster .nav-burger {
    display: flex;
  }

  .nav-split-cluster__panel {
    display: none;
    flex-basis: 100%;
    flex-direction: column;
    gap: 1rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border);
  }

  .nav-split-cluster:has(.nav-check:checked) .nav-split-cluster__panel {
    display: flex;
  }

  .nav-split-cluster__primary,
  .nav-split-cluster__utility {
    flex-direction: column;
    align-items: stretch;
    margin-left: 0;
    gap: 0;
  }

  .nav-split-cluster__group-label {
    display: block;
    margin: 0 0 0.35rem;
    font-size: 0.7rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--ink-faint);
  }

  .nav-split-cluster__primary a,
  .nav-split-cluster__utility a {
    padding: 0.55rem 0;
    border-bottom: 1px solid var(--border);
  }
}

/* ========== 3. Centered Logo Island ========== */
.nav-logo-island {
  position: relative;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1.25rem;
  background: var(--surface-raised);
  border-bottom: 1px solid var(--border);
}

.nav-logo-island__brand {
  grid-column: 2;
  justify-self: center;
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--accent-deep);
}

.nav-logo-island__left,
.nav-logo-island__right {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-logo-island__left {
  grid-column: 1;
  justify-content: flex-start;
}

.nav-logo-island__right {
  grid-column: 3;
  justify-content: flex-end;
}

.nav-logo-island__left a,
.nav-logo-island__right a {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--ink-muted);
}

.nav-logo-island .nav-burger {
  position: absolute;
  right: 1.25rem;
  top: 50%;
  transform: translateY(-50%);
}

@media (max-width: 40rem) {
  .nav-logo-island {
    grid-template-columns: 1fr auto 1fr;
  }

  .nav-logo-island .nav-burger {
    display: flex;
  }

  .nav-logo-island__left,
  .nav-logo-island__right {
    display: none;
    grid-column: 1 / -1;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border);
  }

  .nav-logo-island:has(.nav-check:checked) .nav-logo-island__left,
  .nav-logo-island:has(.nav-check:checked) .nav-logo-island__right {
    display: flex;
  }

  .nav-logo-island__left a,
  .nav-logo-island__right a {
    padding: 0.55rem 0;
    border-bottom: 1px solid var(--border);
  }
}

/* ========== 4. Underline Tab Nav ========== */
.nav-underline-tabs {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1rem;
  padding: 0 1.25rem;
  background: var(--surface-raised);
  border-bottom: 2px solid var(--border);
}

.nav-underline-tabs__brand {
  padding-block: 0.9rem;
  font-weight: 800;
  color: var(--accent-deep);
}

.nav-underline-tabs__panel {
  display: flex;
  flex: 1;
  align-items: stretch;
  gap: 0.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-underline-tabs__panel a {
  display: flex;
  align-items: center;
  padding: 0.9rem 0.85rem;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--ink-muted);
}

.nav-underline-tabs__panel a:hover {
  color: var(--ink);
}

.nav-underline-tabs__panel a[aria-current="page"] {
  color: var(--accent-deep);
  border-bottom-color: var(--accent);
}

.nav-underline-tabs .nav-burger {
  margin-left: auto;
  align-self: center;
}

@media (max-width: 48rem) {
  .nav-underline-tabs {
    padding-block: 0.65rem;
  }

  .nav-underline-tabs .nav-burger {
    display: flex;
  }

  .nav-underline-tabs__panel {
    display: none;
    flex-basis: 100%;
    flex-direction: column;
    gap: 0;
    padding-top: 0.5rem;
  }

  .nav-underline-tabs__panel a {
    border-bottom: 0;
    border-left: 3px solid transparent;
    margin: 0;
    padding: 0.7rem 0.85rem;
  }

  .nav-underline-tabs__panel a[aria-current="page"] {
    border-left-color: var(--accent);
    background: var(--accent-soft);
  }

  .nav-underline-tabs:has(.nav-check:checked) .nav-underline-tabs__panel {
    display: flex;
  }
}

/* ========== 5. Pill Segment Nav ========== */
.nav-pill-segment {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.25rem;
  background: var(--surface-raised);
  border-bottom: 1px solid var(--border);
}

.nav-pill-segment__brand {
  font-weight: 800;
  color: var(--accent-deep);
}

.nav-pill-segment__track {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  margin: 0 auto 0 1rem;
  padding: 0.25rem;
  list-style: none;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--border);
}

.nav-pill-segment__track a {
  display: block;
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--ink-muted);
}

.nav-pill-segment__track a[aria-current="page"],
.nav-pill-segment__track a:hover {
  background: var(--surface-raised);
  color: var(--accent-deep);
  box-shadow: 0 1px 3px rgb(26 35 50 / 0.08);
}

.nav-pill-segment .nav-burger {
  margin-left: auto;
}

.nav-pill-segment__cta {
  margin-left: auto;
}

@media (max-width: 48rem) {
  .nav-pill-segment .nav-burger {
    display: flex;
  }

  .nav-pill-segment__cta {
    display: none;
  }

  .nav-pill-segment__track {
    display: none;
    flex-basis: 100%;
    flex-direction: column;
    margin: 0;
    border-radius: 12px;
    gap: 0.35rem;
  }

  .nav-pill-segment__track a {
    border-radius: 8px;
  }

  .nav-pill-segment:has(.nav-check:checked) .nav-pill-segment__track {
    display: flex;
  }

  .nav-pill-segment:has(.nav-check:checked) .nav-pill-segment__cta {
    display: inline-flex;
    width: 100%;
    margin: 0;
  }
}

/* ========== 6. Mega Panel Nav ========== */
.nav-mega-panel {
  position: relative;
  background: var(--surface-raised);
  border-bottom: 1px solid var(--border);
}

.nav-mega-panel__bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.25rem;
}

.nav-mega-panel__brand {
  font-weight: 800;
  color: var(--accent-deep);
}

.nav-mega-panel__links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-mega-panel__links > li > a,
.nav-mega-panel__links > li > summary {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--ink-muted);
  cursor: pointer;
  list-style: none;
}

.nav-mega-panel__links summary::-webkit-details-marker {
  display: none;
}

.nav-mega-panel__mega {
  display: none;
  position: absolute;
  left: 0;
  right: 0;
  top: 100%;
  z-index: 20;
  padding: 1.25rem;
  background: var(--surface-raised);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--nav-shadow);
}

.nav-mega-panel__links details[open] .nav-mega-panel__mega {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.nav-mega-panel__mega h4 {
  margin: 0 0 0.5rem;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.nav-mega-panel__mega a {
  display: block;
  padding: 0.35rem 0;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--ink);
}

.nav-mega-panel .nav-burger {
  margin-left: auto;
}

.nav-mega-panel__mobile {
  display: none;
}

@media (min-width: 56.26rem) {
  .nav-mega-panel__mobile {
    display: none !important;
  }
}

@media (max-width: 56.25rem) {
  .nav-mega-panel .nav-burger {
    display: flex;
  }

  .nav-mega-panel__links {
    display: none;
  }

  .nav-mega-panel__mobile {
    display: none;
    flex-direction: column;
    gap: 0.5rem;
    padding: 0 1.25rem 1rem;
    border-top: 1px solid var(--border);
  }

  .nav-mega-panel:has(.nav-check:checked) .nav-mega-panel__mobile {
    display: flex;
  }

  .nav-mega-panel__mobile details {
    border-bottom: 1px solid var(--border);
    padding-bottom: 0.5rem;
  }

  .nav-mega-panel__mobile summary {
    padding: 0.65rem 0;
    font-weight: 700;
    cursor: pointer;
  }

  .nav-mega-panel__mobile a {
    display: block;
    padding: 0.4rem 0 0.4rem 0.75rem;
    font-size: 0.875rem;
    color: var(--ink-muted);
  }
}

/* ========== 7. Sidebar Collapse Nav ========== */
.nav-sidebar-rail {
  position: relative;
  display: flex;
  min-height: 12rem;
  background: var(--surface-raised);
}

.nav-sidebar-rail__top {
  display: none;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface-raised);
}

.nav-sidebar-rail__brand {
  font-weight: 800;
  color: var(--accent-deep);
}

.nav-sidebar-rail__rail {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  width: 12rem;
  padding: 1rem 0.75rem;
  border-right: 1px solid var(--border);
  background: #f7faf9;
}

.nav-sidebar-rail__rail a {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.55rem 0.65rem;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--ink-muted);
}

.nav-sidebar-rail__rail a[aria-current="page"],
.nav-sidebar-rail__rail a:hover {
  background: var(--accent-soft);
  color: var(--accent-deep);
}

.nav-sidebar-rail__icon {
  width: 1.25rem;
  text-align: center;
  font-size: 0.75rem;
  font-weight: 800;
}

.nav-sidebar-rail__main {
  flex: 1;
  padding: 1.25rem;
}

.nav-sidebar-rail__scrim {
  display: none;
}

@media (max-width: 56.25rem) {
  .nav-sidebar-rail {
    flex-direction: column;
  }

  .nav-sidebar-rail__top {
    display: flex;
  }

  .nav-sidebar-rail__top .nav-burger {
    display: flex;
  }

  .nav-sidebar-rail__rail {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    z-index: 40;
    transform: translateX(-105%);
    transition: transform var(--motion);
    box-shadow: var(--nav-shadow);
  }

  .nav-sidebar-rail:has(.nav-check:checked) .nav-sidebar-rail__rail {
    transform: translateX(0);
  }

  .nav-sidebar-rail__scrim {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 30;
    border: 0;
    background: rgb(26 35 50 / 0.35);
    cursor: pointer;
  }

  .nav-sidebar-rail:has(.nav-check:checked) .nav-sidebar-rail__scrim {
    display: block;
  }
}

/* ========== 8. Transparent Overlay Nav ========== */
.nav-overlay-glass {
  position: relative;
  z-index: 5;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1.25rem;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--blur));
  border-bottom: 1px solid rgb(255 255 255 / 0.35);
  color: #fff;
}

.nav-overlay-glass__brand {
  font-weight: 800;
  letter-spacing: -0.02em;
}

.nav-overlay-glass__panel {
  display: flex;
  flex: 1;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 0.75rem 1.25rem;
}

.nav-overlay-glass__links {
  display: flex;
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-overlay-glass__links a {
  font-size: 0.875rem;
  font-weight: 700;
  color: rgb(255 255 255 / 0.9);
}

.nav-overlay-glass .nav-burger {
  margin-left: auto;
  background: rgb(255 255 255 / 0.15);
  border-color: rgb(255 255 255 / 0.4);
}

.nav-overlay-glass .nav-burger span {
  background: #fff;
}

@media (max-width: 48rem) {
  .nav-overlay-glass .nav-burger {
    display: flex;
  }

  .nav-overlay-glass__panel {
    display: none;
    flex-basis: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0.5rem;
    padding: 0.75rem;
    border-radius: 10px;
    background: var(--surface-raised);
    color: var(--ink);
  }

  .nav-overlay-glass__links {
    flex-direction: column;
    gap: 0;
  }

  .nav-overlay-glass__links a {
    display: block;
    padding: 0.55rem 0;
    border-bottom: 1px solid var(--border);
    color: var(--ink);
  }

  .nav-overlay-glass:has(.nav-check:checked) .nav-overlay-glass__panel {
    display: flex;
  }
}

/* ========== 9. Search-Forward Nav ========== */
.nav-search-forward {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.25rem;
  background: var(--surface-raised);
  border-bottom: 1px solid var(--border);
}

.nav-search-forward__brand {
  font-weight: 800;
  color: var(--accent-deep);
}

.nav-search-forward__search {
  flex: 1 1 12rem;
  min-width: 0;
  padding: 0.55rem 0.85rem;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: var(--surface);
  font: inherit;
  font-size: 0.875rem;
}

.nav-search-forward__links {
  display: flex;
  gap: 0.85rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-search-forward__links a {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--ink-muted);
}

.nav-search-forward__icons {
  display: flex;
  gap: 0.35rem;
}

.nav-search-forward__icon-btn {
  width: 2.25rem;
  height: 2.25rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  cursor: pointer;
  color: var(--ink-muted);
}

.nav-search-forward .nav-burger {
  margin-left: 0;
}

@media (max-width: 48rem) {
  .nav-search-forward .nav-burger {
    display: flex;
    order: 2;
    margin-left: auto;
  }

  .nav-search-forward__brand {
    order: 1;
  }

  .nav-search-forward__search {
    order: 3;
    flex-basis: 100%;
  }

  .nav-search-forward__icons {
    order: 4;
  }

  .nav-search-forward__links {
    display: none;
    order: 5;
    flex-basis: 100%;
    flex-direction: column;
    gap: 0;
    padding-top: 0.5rem;
    border-top: 1px solid var(--border);
  }

  .nav-search-forward__links a {
    padding: 0.55rem 0;
    border-bottom: 1px solid var(--border);
  }

  .nav-search-forward:has(.nav-check:checked) .nav-search-forward__links {
    display: flex;
  }
}

/* ========== 10. Bottom App Dock ========== */
.nav-bottom-dock {
  position: static;
  background: var(--surface-raised);
  border-bottom: 1px solid var(--border);
}

.nav-bottom-dock__bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.25rem;
}

.nav-bottom-dock__brand {
  font-weight: 800;
  color: var(--accent-deep);
}

.nav-bottom-dock__links {
  display: flex;
  flex: 1;
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-bottom-dock__links a {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--ink-muted);
}

.nav-bottom-dock__dock {
  display: none;
}

.nav-bottom-dock__overflow {
  display: none;
}

.nav-bottom-dock .nav-burger {
  margin-left: auto;
}

@media (max-width: 40rem) {
  .nav-bottom-dock .nav-burger {
    display: flex;
  }

  .nav-bottom-dock__links {
    display: none;
  }

  .nav-bottom-dock__overflow {
    display: none;
    flex-basis: 100%;
    flex-direction: column;
    gap: 0;
    margin: 0;
    padding: 0.5rem 1.25rem 0.75rem;
    list-style: none;
    border-top: 1px solid var(--border);
  }

  .nav-bottom-dock__overflow a {
    display: block;
    padding: 0.55rem 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.875rem;
    font-weight: 600;
  }

  .nav-bottom-dock:has(.nav-check:checked) .nav-bottom-dock__overflow {
    display: flex;
  }

  .nav-bottom-dock__dock {
    position: absolute;
    left: 0.75rem;
    right: 0.75rem;
    bottom: 0.75rem;
    z-index: 5;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.25rem;
    padding: 0.4rem;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: var(--surface-raised);
    box-shadow: var(--nav-shadow);
  }

  .nav-bottom-dock__dock a {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.15rem;
    padding: 0.45rem 0.25rem;
    border-radius: 10px;
    font-size: 0.65rem;
    font-weight: 700;
    color: var(--ink-muted);
  }

  .nav-bottom-dock__dock a[aria-current="page"] {
    background: var(--accent-soft);
    color: var(--accent-deep);
  }

  .nav-bottom-dock__dock strong {
    font-size: 0.85rem;
  }
}

/* ========== 11. Dual Tier Nav ========== */
.nav-dual-tier {
  position: relative;
  background: var(--surface-raised);
  border-bottom: 1px solid var(--border);
}

.nav-dual-tier__utility {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.75rem 1rem;
  padding: 0.4rem 1.25rem;
  background: #f3f6f8;
  border-bottom: 1px solid var(--border);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--ink-muted);
}

.nav-dual-tier__utility a:hover {
  color: var(--accent-deep);
}

.nav-dual-tier__main {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.25rem;
}

.nav-dual-tier__brand {
  font-weight: 800;
  color: var(--accent-deep);
}

.nav-dual-tier__links {
  display: flex;
  flex: 1;
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-dual-tier__links a {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--ink-muted);
}

.nav-dual-tier .nav-burger {
  margin-left: auto;
}

.nav-dual-tier__drawer {
  display: none;
}

@media (max-width: 48rem) {
  .nav-dual-tier__utility {
    display: none;
  }

  .nav-dual-tier .nav-burger {
    display: flex;
  }

  .nav-dual-tier__links,
  .nav-dual-tier__main .nav-btn {
    display: none;
  }

  .nav-dual-tier__drawer {
    display: none;
    flex-direction: column;
    gap: 1rem;
    padding: 0.75rem 1.25rem 1rem;
    border-top: 1px solid var(--border);
  }

  .nav-dual-tier:has(.nav-check:checked) .nav-dual-tier__drawer {
    display: flex;
  }

  .nav-dual-tier__drawer h4 {
    margin: 0 0 0.35rem;
    font-size: 0.7rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--ink-faint);
  }

  .nav-dual-tier__drawer a {
    display: block;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.875rem;
    font-weight: 600;
  }
}

/* ========== 12. Breadcrumb Hybrid Nav ========== */
.nav-breadcrumb-hybrid {
  position: relative;
  background: var(--surface-raised);
  border-bottom: 1px solid var(--border);
}

.nav-breadcrumb-hybrid__bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.25rem;
}

.nav-breadcrumb-hybrid__brand {
  font-weight: 800;
  color: var(--accent-deep);
}

.nav-breadcrumb-hybrid__links {
  display: flex;
  gap: 0.85rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-breadcrumb-hybrid__links a {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--ink-muted);
}

.nav-breadcrumb-hybrid__crumbs {
  flex: 1 1 8rem;
  min-width: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: nowrap;
  gap: 0.35rem;
  overflow: hidden;
  font-size: 0.8125rem;
  color: var(--ink-faint);
}

.nav-breadcrumb-hybrid__crumbs li {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  white-space: nowrap;
}

.nav-breadcrumb-hybrid__crumbs li:not(:last-child)::after {
  content: "/";
  color: var(--border-strong);
}

.nav-breadcrumb-hybrid__crumbs a {
  color: var(--ink-muted);
  font-weight: 600;
}

.nav-breadcrumb-hybrid__crumbs li:last-child {
  color: var(--ink);
  font-weight: 700;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav-breadcrumb-hybrid .nav-burger {
  margin-left: auto;
}

.nav-breadcrumb-hybrid__drawer {
  display: none;
}

@media (max-width: 48rem) {
  .nav-breadcrumb-hybrid .nav-burger {
    display: flex;
  }

  .nav-breadcrumb-hybrid__links {
    display: none;
  }

  .nav-breadcrumb-hybrid__crumbs {
    flex-basis: 100%;
    order: 3;
    padding-top: 0.35rem;
    border-top: 1px dashed var(--border);
  }

  .nav-breadcrumb-hybrid__drawer {
    display: none;
    flex-direction: column;
    padding: 0 1.25rem 0.75rem;
  }

  .nav-breadcrumb-hybrid:has(.nav-check:checked) .nav-breadcrumb-hybrid__drawer {
    display: flex;
  }

  .nav-breadcrumb-hybrid__drawer a {
    padding: 0.55rem 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.875rem;
    font-weight: 600;
  }
}

/* ========== 13. Icon Rail Top Nav ========== */
.nav-icon-rail-top {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem 1.25rem;
  background: var(--surface-raised);
  border-bottom: 1px solid var(--border);
}

.nav-icon-rail-top__brand {
  font-weight: 800;
  color: var(--accent-deep);
}

.nav-icon-rail-top__rail {
  display: flex;
  flex: 1;
  flex-wrap: wrap;
  gap: 0.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-icon-rail-top__rail a {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.15rem;
  min-width: 3.75rem;
  padding: 0.4rem 0.5rem;
  border-radius: 10px;
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--ink-muted);
}

.nav-icon-rail-top__rail a:hover,
.nav-icon-rail-top__rail a[aria-current="page"] {
  background: var(--accent-soft);
  color: var(--accent-deep);
}

.nav-icon-rail-top__rail strong {
  font-size: 0.9rem;
}

.nav-icon-rail-top .nav-burger {
  margin-left: auto;
}

@media (max-width: 48rem) {
  .nav-icon-rail-top .nav-burger {
    display: flex;
  }

  .nav-icon-rail-top__rail {
    display: none;
    flex-basis: 100%;
    flex-direction: column;
    gap: 0;
  }

  .nav-icon-rail-top__rail a {
    flex-direction: row;
    justify-content: flex-start;
    gap: 0.75rem;
    min-width: 0;
    padding: 0.65rem 0.25rem;
    border-bottom: 1px solid var(--border);
    border-radius: 0;
    font-size: 0.875rem;
  }

  .nav-icon-rail-top:has(.nav-check:checked) .nav-icon-rail-top__rail {
    display: flex;
  }
}

/* ========== 14. Slide-Over Drawer Nav ========== */
.nav-slide-over {
  position: relative;
  display: grid;
  grid-template-columns: 14rem 1fr;
  min-height: 12rem;
  background: var(--surface-raised);
}

.nav-slide-over__top {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.75rem 1.25rem;
  border-bottom: 1px solid var(--border);
}

.nav-slide-over__brand {
  font-weight: 800;
  color: var(--accent-deep);
}

.nav-slide-over__drawer {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 1rem 0.85rem;
  border-right: 1px solid var(--border);
  background: #f7faf9;
}

.nav-slide-over__drawer a {
  padding: 0.55rem 0.65rem;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--ink-muted);
}

.nav-slide-over__drawer a[aria-current="page"],
.nav-slide-over__drawer a:hover {
  background: var(--accent-soft);
  color: var(--accent-deep);
}

.nav-slide-over__content {
  padding: 1.25rem;
}

.nav-slide-over__top .nav-burger {
  display: none;
}

.nav-slide-over__scrim {
  display: none;
}

@media (max-width: 56.25rem) {
  .nav-slide-over {
    grid-template-columns: 1fr;
  }

  .nav-slide-over__top .nav-burger {
    display: flex;
  }

  .nav-slide-over__drawer {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 40;
    width: min(18rem, 86vw);
    border-right: 0;
    border-left: 1px solid var(--border);
    transform: translateX(105%);
    transition: transform var(--motion);
    box-shadow: var(--nav-shadow);
  }

  .nav-slide-over:has(.nav-check:checked) .nav-slide-over__drawer {
    transform: translateX(0);
  }

  .nav-slide-over__scrim {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 30;
    border: 0;
    background: rgb(26 35 50 / 0.35);
    cursor: pointer;
  }

  .nav-slide-over:has(.nav-check:checked) .nav-slide-over__scrim {
    display: block;
  }
}

/* ========== 15. Announcement Stack Nav ========== */
.nav-announce-stack {
  position: relative;
}

.nav-announce-stack__banner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.5rem 1rem;
  padding: 0.5rem 2.5rem 0.5rem 1rem;
  background: var(--accent-deep);
  color: #fff;
  font-size: 0.8125rem;
  font-weight: 600;
  text-align: center;
}

.nav-announce-stack__banner a {
  text-decoration: underline;
  text-underline-offset: 2px;
}

.nav-announce-stack__dismiss {
  position: absolute;
  right: 0.75rem;
  top: 0.4rem;
  width: 1.75rem;
  height: 1.75rem;
  border: 0;
  border-radius: 6px;
  background: rgb(255 255 255 / 0.15);
  color: #fff;
  cursor: pointer;
}

.nav-announce-stack__bar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.25rem;
  background: var(--surface-raised);
  border-bottom: 1px solid var(--border);
}

.nav-announce-stack__brand {
  font-weight: 800;
  color: var(--accent-deep);
}

.nav-announce-stack__links {
  display: flex;
  flex: 1;
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-announce-stack__links a {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--ink-muted);
}

.nav-announce-stack .nav-burger {
  margin-left: auto;
}

@media (max-width: 48rem) {
  .nav-announce-stack .nav-burger {
    display: flex;
  }

  .nav-announce-stack__links,
  .nav-announce-stack__bar .nav-btn {
    display: none;
  }

  .nav-announce-stack__links {
    flex-basis: 100%;
    flex-direction: column;
    gap: 0;
  }

  .nav-announce-stack__bar:has(.nav-check:checked) .nav-announce-stack__links {
    display: flex;
  }

  .nav-announce-stack__bar:has(.nav-check:checked) .nav-btn {
    display: inline-flex;
    width: 100%;
  }

  .nav-announce-stack__links a {
    padding: 0.55rem 0;
    border-bottom: 1px solid var(--border);
  }
}