.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: var(--space-lg) var(--space-lg) var(--space-md);
  border-bottom: 1px solid var(--color-hairline);
}

.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 {
  color: var(--color-armadillo-600);
}

.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);
}

/* 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);
}

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

.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: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-armadillo-500);
  margin-bottom: var(--space-sm);
}

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

.public-article__back-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  min-height: 2.75rem;
  padding-block: var(--space-xs);
  margin-block: calc(var(--space-xs) * -1);
  font-size: 0.875rem;
  color: var(--color-armadillo-500);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

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

.public-article__body a,
.public-collection__description 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 {
  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);
  }
}

.public-toc__heading {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-armadillo-500);
  font-weight: 600;
  margin: var(--space-md) 0 var(--space-xs);
}

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

.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);
}