.public-layout {
  --color-hairline: oklch(91% 0.005 90);
  --public-max-width: 64rem; /* widest layout (article + sidebar TOC); topbar matches it */

  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--color-white);
}

.public-layout__topbar {
  max-width: var(--public-max-width);
  width: 100%;
  margin-inline: auto;
  padding-block: var(--space-lg) var(--space-md);
  padding-inline: var(--space-lg);
  border-bottom: 1px solid var(--color-hairline);
}

@media (min-width: 64rem) {
  .public-layout__topbar {
    padding-inline: 0;
  }
}

.public-layout__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
}

.public-layout__logo {
  width: 1.5rem;
  height: 1.5rem;
  border-radius: var(--radius-sm);
  object-fit: contain;
  display: block;
}

.public-layout__wordmark {
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--color-armadillo-900);
  text-decoration: none;
}

a.public-layout__wordmark:hover,
a.public-layout__brand:hover .public-layout__wordmark {
  color: var(--color-armadillo-700);
}

a.public-layout__brand {
  text-decoration: none;
}

.public-layout__main {
  flex: 1;
  width: 100%;
  padding: var(--space-2xl) var(--space-lg);

  @media (min-width: 768px) {
    padding: var(--space-3xl) var(--space-lg);
  }
}

.public-collection,
.public-not-found,
.public-article {
  max-width: 48rem;
  margin-inline: auto;
}

.public-article-layout {
  max-width: var(--public-max-width);
  margin-inline: auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

@media (min-width: 1024px) {
  .public-article-layout {
    grid-template-columns: 14rem 1fr;
    gap: var(--space-3xl);
  }
}

.public-article-layout .public-article {
  max-width: none;
  margin: 0;
  min-width: 0;
}

.public-layout__footer {
  padding: var(--space-md) var(--space-lg) var(--space-lg);
  text-align: center;
  font-size: 0.75rem;
  color: var(--color-armadillo-400);
}

.public-layout__footer-link {
  color: var(--color-armadillo-600);
  text-decoration: none;
  font-weight: 500;
}

.public-layout__footer-link:hover {
  color: var(--color-armadillo-800);
}

.public-layout__footer-logo {
  width: 0.875rem;
  height: 0.875rem;
  vertical-align: -0.2em;
  margin-right: 0.25rem;
  display: inline-block;
}

/* Collection page header */
.public-collection__header {
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid var(--color-hairline);
}

.public-collection__name {
  font-size: clamp(1.75rem, 6vw, 2.25rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--color-armadillo-900);
  margin-bottom: var(--space-sm);
}

.public-collection__description {
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--color-armadillo-600);
  margin-bottom: var(--space-lg);
}

.public-collection__intro {
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--color-armadillo-600);
}

.public-collection__intro p:last-child {
  margin-bottom: 0;
}

.public-section__name:has(+ .public-collection__description) {
  margin-bottom: var(--space-sm);
}

/* Article index (collection's list of articles) */
.public-article-index {
  display: flex;
  flex-direction: column;
}

.public-article-index__section {
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-armadillo-400);
  margin: var(--space-lg) 0 var(--space-md);
}

.public-article-index__item {
  display: block;
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--color-hairline);
  text-decoration: none;
  color: inherit;
}

.public-article-index__item:first-child {
  padding-top: 0;
}

.public-article-index__item:last-child {
  border-bottom: 0;
}

.public-article-index__title {
  font-size: 1.125rem;
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-armadillo-900);
  margin-bottom: var(--space-xs);
}

.public-article-index__item:hover .public-article-index__title {
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

.public-article-index__preview {
  font-size: 0.9375rem;
  line-height: 1.5;
  color: var(--color-armadillo-500);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Sections (public) */
.public-section {
  margin-top: var(--space-2xl);
}

.public-section__name {
  font-size: 1.875rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--color-armadillo-900);
  margin-bottom: var(--space-lg);
}

/* Help Center landing (category cards) */
.public-help-center {
  max-width: var(--public-max-width);
  margin-inline: auto;
}

.public-help-center__hero {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.public-help-center__title {
  font-size: clamp(1.875rem, 6vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--color-armadillo-900);
}

.public-help-center__cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(18rem, 1fr));
  gap: var(--space-lg);
}

.public-help-center__card {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  padding: var(--space-xl);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: inherit;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.public-help-center__card:hover {
  border-color: var(--color-armadillo-300);
  box-shadow: var(--shadow-sm);
}

.public-help-center__card-name {
  font-size: 1.1875rem;
  font-weight: 700;
  color: var(--color-armadillo-900);
}

.public-help-center__card-desc {
  font-size: 0.9375rem;
  line-height: 1.5;
  color: var(--color-armadillo-600);
}

.public-help-center__card-count {
  margin-top: var(--space-xs);
  font-size: 0.8125rem;
  color: var(--color-armadillo-500);
}

/* Article page */
.public-breadcrumb {
  margin-bottom: var(--space-xl);
}

.public-breadcrumb__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  font-size: 0.875rem;
  line-height: 1.4;
}

.public-breadcrumb__item {
  display: inline-flex;
  align-items: center;
  min-width: 0;
}

.public-breadcrumb__item:not(:first-child)::before {
  content: "\203A"; /* › */
  margin-inline: var(--space-xs);
  color: var(--color-armadillo-300);
}

.public-breadcrumb__link {
  color: var(--color-armadillo-500);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.public-breadcrumb__link:hover {
  color: var(--color-armadillo-800);
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

.public-breadcrumb__current {
  color: var(--color-armadillo-700);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.public-article__header {
  margin-bottom: var(--space-xl);
}

.public-article__title {
  font-size: clamp(1.75rem, 6vw, 2.25rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--color-armadillo-900);
}

.public-article__description {
  font-size: 1.125rem;
  color: var(--color-armadillo-600);
  line-height: 1.5;
  margin-top: var(--space-sm);
}

.public-article__body {
  font-size: 1.125rem;
  line-height: 1.75;
  color: var(--color-armadillo-800);
}

.public-article__body a,
.public-collection__description a,
.public-collection__intro a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 0.15em;
  text-decoration-thickness: 1px;
}

.public-article__body a:hover,
.public-collection__description a:hover,
.public-collection__intro a:hover {
  text-decoration-thickness: 2px;
}

/* Sidebar table of contents — desktop only for now; mobile relies on the back link + prev/next */
.public-toc {
  display: none;
}

@media (min-width: 1024px) {
  .public-toc {
    display: block;
    font-size: 0.9375rem;
    position: sticky;
    top: var(--space-lg);
    align-self: start;
    max-height: calc(100vh - 2 * var(--space-lg));
    overflow-y: auto;
  }
}

/* Mobile TOC disclosure (< 1024px). A native <details> wraps the tree so the
   whole collection stays navigable on a phone without any JS. At >= 1024px the
   real .public-toc sidebar takes over and this disclosure becomes a transparent
   passthrough: no border, summary hidden, content always shown. */
.public-toc-disclosure {
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-md);
}

.public-toc-disclosure__summary {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  min-height: 2.75rem; /* >= 44px touch target */
  padding: var(--space-sm) var(--space-md);
  cursor: pointer;
  list-style: none;
  color: var(--color-armadillo-700);
  line-height: 1.3;
}

.public-toc-disclosure__summary::-webkit-details-marker {
  display: none;
}

/* The label sits between a leading list-icon and the trailing chevron. It reads
   "<eyebrow> / <current article title>" so the collapsed state still tells the
   reader where they are. */
.public-toc-disclosure__label {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.public-toc-disclosure__eyebrow {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-armadillo-400);
}

.public-toc-disclosure__current {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-armadillo-900);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.public-toc-disclosure__icon {
  flex-shrink: 0;
  display: inline-flex;
  color: var(--color-armadillo-400);
}

.public-toc-disclosure__chevron {
  flex-shrink: 0;
  display: inline-flex;
  color: var(--color-armadillo-400);
  transition: transform var(--transition-fast);
}

.public-toc-disclosure[open] .public-toc-disclosure__chevron {
  transform: rotate(180deg);
}

/* When open, the tree gets a hairline separator and its own padding. The inner
   .public-toc is force-shown here (it is display:none by default below 1024px). */
.public-toc-disclosure[open] .public-toc {
  display: block;
  padding: 0 var(--space-md) var(--space-sm);
  border-top: 1px solid var(--color-hairline);
  margin-top: 0;
}

.public-toc-disclosure[open] .public-toc .public-toc__heading:first-of-type {
  margin-top: var(--space-md);
}

/* Browsable accordion (Docs, < 1024px). Inside the disclosure, each collection is
   its own nested native <details> so a full space tree reads as a short list of
   tappable collection rows instead of one long scroll wall. The collection holding
   the current article is rendered [open]. Zero JS — nested <details> only. At
   >= 1024px the toggles flatten (see media query below) so the desktop sidebar is
   the same always-expanded tree it is today. */
.public-toc__collection {
  border-top: 1px solid var(--color-hairline);
}

.public-toc__collection:first-of-type {
  border-top: 0;
}

.public-toc__collection-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  min-height: 2.75rem; /* >= 44px touch target */
  padding: var(--space-xs) 0;
  cursor: pointer;
  list-style: none;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--color-armadillo-900);
  line-height: 1.3;
}

.public-toc__collection-toggle::-webkit-details-marker {
  display: none;
}

.public-toc__collection-name {
  flex: 1;
  min-width: 0;
}

.public-toc__collection-caret {
  flex-shrink: 0;
  display: inline-flex;
  color: var(--color-armadillo-400);
  transition: transform var(--transition-fast);
}

.public-toc__collection[open] .public-toc__collection-caret {
  transform: rotate(90deg);
}

/* The collection containing the current article keeps a quiet "you are here"
   marker on its row, so even if the reader collapses it the row still says the
   active article lives inside. Armadillo, never --color-primary. */
.public-toc__collection-toggle--current {
  border-left: 2px solid var(--color-armadillo-900);
  margin-left: calc(var(--space-sm) * -1);
  padding-left: var(--space-sm);
}

@media (min-width: 1024px) {
  /* Desktop: the accordion flattens to the same always-expanded tree as today.
     Toggles render as plain headings; every collection's body is shown. */
  .public-toc__collection {
    border-top: 0;
  }

  .public-toc__collection-toggle {
    min-height: 0;
    padding: 0;
    margin: var(--space-lg) 0 var(--space-xs);
    cursor: default;
    pointer-events: none;
  }

  .public-toc__collection-toggle--current {
    border-left: 0;
    margin-left: 0;
    padding-left: 0;
  }

  .public-toc__collection-caret {
    display: none;
  }

  .public-toc__collection-body {
    display: block;
  }
}

@media (min-width: 1024px) {
  .public-toc-disclosure {
    border: 0;
    border-radius: 0;
    position: sticky;
    top: var(--space-lg);
    align-self: start;
  }

  .public-toc-disclosure__summary {
    display: none;
  }

  /* Summary is hidden here, so the disclosure can't be toggled; modern engines hide
     a closed <details>'s content via ::details-content, so force it visible there. */
  .public-toc-disclosure::details-content {
    content-visibility: visible;
  }

  .public-toc-disclosure .public-toc {
    display: block;
    padding: 0;
    border-top: 0;
    max-height: calc(100vh - 2 * var(--space-lg));
    overflow-y: auto;
  }
}

/* Docs mobile drawer */
.public-toc-drawer__trigger {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  width: 100%;
  min-height: 2.75rem;
  margin-bottom: var(--space-xl);
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-md);
  background: var(--color-white);
  cursor: pointer;
  color: var(--color-armadillo-700);
  line-height: 1.3;
  text-align: left;
  font: inherit;
}

.public-toc-drawer__trigger-icon {
  flex-shrink: 0;
  display: inline-flex;
  color: var(--color-armadillo-400);
}

.public-toc-drawer__trigger-label {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.public-toc-drawer__trigger-eyebrow {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-armadillo-400);
}

.public-toc-drawer__trigger-current {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-armadillo-900);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.public-toc-drawer {
  width: 100%;
  max-width: none;
  height: 100%;
  max-height: none;
  inset: 0;
  margin: 0;
  padding: 0;
  border: 0;
  background: var(--color-white);
}

.public-toc-drawer::backdrop {
  background: rgb(0 0 0 / 0.3);
}

html:has(.public-toc-drawer[open]) {
  overflow: hidden;
}

.public-toc-drawer__panel {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
}

.public-toc-drawer__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  flex-shrink: 0;
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--color-hairline);
}

.public-toc-drawer__title {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-armadillo-400);
}

.public-toc-drawer__close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  min-width: 2.75rem;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  color: var(--color-armadillo-600);
}

.public-toc-drawer__close:hover {
  color: var(--color-armadillo-900);
}

.public-toc-drawer__close-icon {
  display: inline-flex;
  font-size: 1rem;
}

.public-toc-drawer__body {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: var(--space-md) var(--space-md) var(--space-lg);
}

.public-toc-drawer__body .public-toc {
  display: block;
}

@media (min-width: 1024px) {
  .public-toc-drawer__trigger {
    display: none;
  }
}

.public-toc__heading {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--color-armadillo-900);
  margin: var(--space-lg) 0 var(--space-xs);
}

.public-toc__heading:first-of-type {
  margin-top: var(--space-sm);
}

.public-toc__section {
  margin: var(--space-sm) 0 var(--space-2xs);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-armadillo-400);
}

.public-toc__list {
  list-style: none;
  margin: 0 0 var(--space-md);
  padding: 0;
  display: flex;
  flex-direction: column;
}

.public-toc__link {
  display: block;
  padding: var(--space-xs) 0 var(--space-xs) var(--space-sm);
  margin-left: calc(var(--space-sm) * -1);
  color: var(--color-armadillo-700);
  text-decoration: none;
  line-height: 1.4;
  border-left: 2px solid transparent;
}

.public-toc__link:hover {
  color: var(--color-armadillo-900);
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

.public-toc__link--current {
  color: var(--color-armadillo-900);
  border-left-color: var(--color-armadillo-900);
  font-weight: 600;
}

/* Inline prev / next at end of article */
.public-prev-next {
  margin-top: var(--space-2xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-hairline);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.public-prev-next__link {
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
  text-decoration: none;
  color: var(--color-armadillo-700);
  padding: var(--space-sm) 0;
}

.public-prev-next__link:hover {
  color: var(--color-armadillo-900);
}

.public-prev-next__link:hover .public-prev-next__title {
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

.public-prev-next__link--prev {
  align-items: flex-start;
  text-align: left;
}

.public-prev-next__link--next {
  align-items: flex-end;
  text-align: right;
  grid-column: 2;
}

.public-prev-next__caption {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-armadillo-500);
}

.public-prev-next__title {
  font-size: 1rem;
  font-weight: 600;
  color: inherit;
}

/* 404 */
.public-not-found {
  text-align: center;
  padding: var(--space-2xl) 0;
}

.public-not-found__icon {
  font-size: 2rem;
  color: var(--color-armadillo-400);
  margin-bottom: var(--space-md);
}

.public-not-found__title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-armadillo-900);
  margin-bottom: var(--space-sm);
}

.public-not-found__description {
  color: var(--color-armadillo-600);
}