/*
 * blog_public.css — the public article list and article pages.
 *
 * Reading surface (SharpPenny design system § 2.1): more whitespace, rounder
 * cards, soft blue-shifted shadows, Inter throughout. Colour stays semantic:
 *   teal  — can be acted on (links, hover, focus)
 *   mint  — the current page in the page numbers (static selected treatment)
 * The palette is declared as variables on the page root and re-declared for
 * dark mode. Public visitors have no in-app theme switch, so dark mode follows
 * the device setting.
 */

.blog-public {
  --blog-bg: #f7f9fc;
  --blog-surface: #ffffff;
  --blog-surface-sunken: #f1f5f9;
  --blog-ink: #0f172a;
  --blog-text: #334155;
  --blog-muted: #64748b;
  --blog-border: rgba(15, 23, 42, 0.08);
  --blog-border-strong: rgba(15, 23, 42, 0.14);
  --blog-teal: #0f8b96;
  --blog-teal-bright: #18afb1;
  --blog-focus-ring: rgba(24, 175, 177, 0.2);
  --blog-current-background: #c8f9e4;
  --blog-current-border: #82e9d3;
  --blog-current-ink: #0f766e;
  --blog-caution-background: #fff7e6;
  --blog-caution-border: #f5d68a;
  --blog-caution-ink: #7a5300;
  --blog-shadow: 0 10px 24px rgba(15, 23, 42, 0.05);
  --blog-shadow-hover: 0 14px 34px rgba(15, 23, 42, 0.09);
  --blog-radius-card: 1.5rem;
  --blog-radius-media: 14px;
  --blog-reading-width: 42rem;
  --blog-hero-width: 60rem;
  --blog-wide-width: 72rem;
  --blog-gutter: clamp(1rem, 4vw, 2.5rem);
  --blog-control-height: 38px;
}

@media (prefers-color-scheme: dark) {
  .blog-public {
    --blog-bg: #0f1722;
    --blog-surface: #141f2d;
    --blog-surface-sunken: #111926;
    --blog-ink: #edf4fb;
    --blog-text: #d6e0eb;
    --blog-muted: #9fb0c4;
    --blog-border: rgba(148, 163, 184, 0.14);
    --blog-border-strong: rgba(148, 163, 184, 0.22);
    --blog-teal: #2bc7c9;
    --blog-teal-bright: #5eead4;
    --blog-current-background: rgba(20, 184, 166, 0.18);
    --blog-current-border: rgba(45, 212, 191, 0.55);
    --blog-current-ink: #5eead4;
    --blog-caution-background: rgba(245, 158, 11, 0.12);
    --blog-caution-border: rgba(245, 158, 11, 0.4);
    --blog-caution-ink: #fcd34d;
    --blog-shadow: 0 12px 28px rgba(2, 6, 23, 0.28);
    --blog-shadow-hover: 0 18px 36px rgba(2, 6, 23, 0.4);
  }
}

/* ── Page ─────────────────────────────────────────────────────────────── */

.blog-public {
  margin: 0;
  background: var(--blog-bg);
  color: var(--blog-text);
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.blog-public *,
.blog-public *::before,
.blog-public *::after {
  box-sizing: border-box;
}

.blog-public a {
  color: var(--blog-teal);
  text-underline-offset: 3px;
}

.blog-public a:focus-visible {
  outline: 3px solid var(--blog-focus-ring);
  outline-offset: 2px;
  border-radius: 4px;
}

.blog-public img {
  max-width: 100%;
  height: auto;
}

.blog-skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  padding: 0.5rem 0.9rem;
  border-radius: 10px;
  background: var(--blog-surface);
  box-shadow: var(--blog-shadow);
  z-index: 10;
}

.blog-skip-link:focus {
  top: 1rem;
}

/* ── Top bar ──────────────────────────────────────────────────────────── */

.blog-topbar {
  background: var(--blog-surface);
  border-bottom: 1px solid var(--blog-border);
}

.blog-topbar__inner {
  max-width: var(--blog-wide-width);
  margin-inline: auto;
  padding-inline: var(--blog-gutter);
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.blog-public .blog-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--blog-ink);
  text-decoration: none;
}

.blog-brand__mark {
  width: 1.6rem;
  height: 1.6rem;
  color: var(--blog-teal);
  flex: none;
}

.blog-brand__name {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.blog-brand__section {
  padding-inline-start: 0.6rem;
  border-inline-start: 1px solid var(--blog-border-strong);
  color: var(--blog-muted);
  font-weight: 500;
}

.blog-topbar__nav {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.blog-public .blog-topbar__link {
  color: var(--blog-text);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
}

.blog-public .blog-topbar__link:hover {
  color: var(--blog-teal);
}

.blog-public .blog-topbar__button {
  display: inline-flex;
  align-items: center;
  min-height: var(--blog-control-height);
  padding-inline: 1rem;
  border: 1px solid var(--blog-border-strong);
  border-radius: 14px;
  color: var(--blog-ink);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  transition: border-color 0.18s ease, color 0.18s ease;
}

.blog-public .blog-topbar__button:hover {
  border-color: var(--blog-teal-bright);
  color: var(--blog-teal);
}

/* ── Main and footer ──────────────────────────────────────────────────── */

.blog-main {
  padding-inline: var(--blog-gutter);
  padding-block: 2.5rem 4.5rem;
}

.blog-footer {
  border-top: 1px solid var(--blog-border);
  color: var(--blog-muted);
  font-size: 0.85rem;
}

.blog-footer__inner {
  max-width: var(--blog-wide-width);
  margin-inline: auto;
  padding-inline: var(--blog-gutter);
  padding-block: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
}

.blog-footer__copyright {
  margin: 0;
}

/* ── List page header ─────────────────────────────────────────────────── */

.blog-list-page {
  max-width: var(--blog-wide-width);
  margin-inline: auto;
}

.blog-page-header {
  margin-bottom: 2.25rem;
  max-width: 46rem;
}

.blog-page-header__eyebrow {
  margin: 0 0 0.5rem;
  color: var(--blog-muted);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.blog-page-header__title {
  margin: 0;
  color: var(--blog-ink);
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.05;
  text-wrap: balance;
}

.blog-page-header__subtitle {
  margin: 0.75rem 0 0;
  color: var(--blog-muted);
  font-size: 1.05rem;
  line-height: 1.65;
}

/* ── Article cards ────────────────────────────────────────────────────── */

.blog-card-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.5rem;
}

@media (min-width: 48rem) {
  .blog-card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  /* Three related articles would leave one alone in a two-column row. */
  .blog-card-grid--three {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (min-width: 64rem) {
  .blog-card-grid--three {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.blog-card-grid__item {
  display: flex;
}

.blog-card {
  display: flex;
  width: 100%;
  background: var(--blog-surface);
  border: 1px solid var(--blog-border);
  border-radius: var(--blog-radius-card);
  box-shadow: var(--blog-shadow);
  overflow: hidden;
  transition: box-shadow 0.18s ease, border-color 0.18s ease, transform 0.18s ease;
}

.blog-card:hover {
  border-color: rgba(24, 175, 177, 0.45);
  box-shadow: var(--blog-shadow-hover);
  transform: translateY(-2px);
}

.blog-public .blog-card__link {
  display: flex;
  flex-direction: column;
  width: 100%;
  color: inherit;
  text-decoration: none;
}

.blog-public .blog-card__link:focus-visible {
  border-radius: var(--blog-radius-card);
  outline-offset: -3px;
}

.blog-card__media {
  aspect-ratio: 16 / 9;
  background: var(--blog-surface-sunken);
  overflow: hidden;
}

.blog-card__image {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.blog-card__body {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  padding: 1.25rem 1.4rem 1.4rem;
}

.blog-card__eyebrow {
  margin: 0;
  color: var(--blog-muted);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.blog-card__title {
  margin: 0;
  color: var(--blog-ink);
  font-size: 1.22rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.3;
  text-wrap: balance;
}

.blog-card__subtitle {
  margin: 0;
  color: var(--blog-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.blog-card__meta {
  margin: auto 0 0;
  padding-top: 0.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  color: var(--blog-muted);
  font-size: 0.84rem;
  font-variant-numeric: tabular-nums;
}

/* ── Pagination ───────────────────────────────────────────────────────── */

.blog-pagination {
  margin-top: 2.5rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.5rem 1rem;
}

.blog-pagination__pages {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.blog-pagination__page,
.blog-pagination__step,
.blog-pagination__gap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: var(--blog-control-height);
  min-height: var(--blog-control-height);
  padding-inline: 0.75rem;
  border-radius: 14px;
  font-size: 0.9rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.blog-public a.blog-pagination__page,
.blog-public a.blog-pagination__step {
  border: 1px solid var(--blog-border-strong);
  background: var(--blog-surface);
  color: var(--blog-ink);
  text-decoration: none;
  transition: border-color 0.18s ease, color 0.18s ease;
}

.blog-public a.blog-pagination__page:hover:not(.is-current),
.blog-public a.blog-pagination__step:hover {
  border-color: var(--blog-teal-bright);
  color: var(--blog-teal);
}

.blog-pagination__page.is-current {
  border: 1px solid var(--blog-current-border);
  background: var(--blog-current-background);
  color: var(--blog-current-ink);
}

.blog-pagination__step.is-disabled {
  color: var(--blog-muted);
  opacity: 0.5;
}

.blog-pagination__gap {
  color: var(--blog-muted);
  min-width: auto;
  padding-inline: 0.25rem;
}

.blog-empty-state {
  margin: 0;
  padding: 2.5rem 1.5rem;
  border: 1px dashed var(--blog-border-strong);
  border-radius: var(--blog-radius-card);
  color: var(--blog-muted);
  text-align: center;
}

/* ── Article page ─────────────────────────────────────────────────────── */

.blog-article {
  max-width: var(--blog-wide-width);
  margin-inline: auto;
}

.blog-preview-notice,
.blog-breadcrumb,
.blog-article__header,
.blog-article__body,
.blog-article__topics {
  max-width: var(--blog-reading-width);
  margin-inline: auto;
}

.blog-preview-notice {
  margin-bottom: 1.5rem;
  padding: 0.8rem 1rem;
  border: 1px solid var(--blog-caution-border);
  border-radius: 14px;
  background: var(--blog-caution-background);
  color: var(--blog-caution-ink);
  font-size: 0.92rem;
}

.blog-breadcrumb {
  margin-bottom: 1.5rem;
  font-size: 0.84rem;
  color: var(--blog-muted);
}

.blog-breadcrumb__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.blog-breadcrumb__list li + li::before {
  content: "›";
  margin-inline-end: 0.35rem;
  color: var(--blog-muted);
}

.blog-breadcrumb__list li[aria-current="page"] {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 28ch;
}

.blog-article__eyebrow {
  margin: 0 0 0.75rem;
  color: var(--blog-muted);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.blog-article__title {
  margin: 0;
  color: var(--blog-ink);
  font-size: clamp(2.1rem, 5vw, 3.1rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.05;
  text-wrap: balance;
}

.blog-article__subtitle {
  margin: 1rem 0 0;
  color: var(--blog-muted);
  font-size: clamp(1.1rem, 2vw, 1.28rem);
  line-height: 1.55;
  text-wrap: pretty;
}

.blog-article__meta {
  margin: 1rem 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  color: var(--blog-muted);
  font-size: 0.92rem;
  font-weight: 500;
}

.blog-article__hero {
  max-width: var(--blog-hero-width);
  margin: 2.25rem auto 2.5rem;
  border-radius: var(--blog-radius-card);
  overflow: hidden;
  background: var(--blog-surface-sunken);
}

.blog-article__hero-image {
  display: block;
  width: 100%;
}

.blog-article__body {
  margin-top: 2rem;
  color: var(--blog-text);
  font-size: 1.0625rem;
  line-height: 1.75;
}

.blog-article__hero + .blog-article__body {
  margin-top: 0;
}

.blog-article__body p,
.blog-article__body ul,
.blog-article__body ol {
  margin: 0 0 1.25em;
}

.blog-article__body ul,
.blog-article__body ol {
  padding-inline-start: 1.3em;
}

.blog-article__body li {
  margin-block: 0.4em;
}

.blog-article__body li::marker {
  color: var(--blog-teal);
}

.blog-article__body strong {
  color: var(--blog-ink);
  font-weight: 600;
}

.blog-article__body h2,
.blog-article__body h3 {
  color: var(--blog-ink);
  letter-spacing: -0.03em;
  line-height: 1.2;
  text-wrap: balance;
  scroll-margin-top: 1.5rem;
}

.blog-article__body h2 {
  margin: 2.4rem 0 0.8rem;
  font-size: clamp(1.45rem, 3vw, 1.75rem);
  font-weight: 700;
}

.blog-article__body h3 {
  margin: 2rem 0 0.6rem;
  font-size: 1.22rem;
  font-weight: 700;
  letter-spacing: -0.015em;
}

.blog-block--quote {
  margin: 2rem 0;
  padding: 1.25rem 1.5rem;
  border-radius: var(--blog-radius-media);
  background: var(--blog-surface-sunken);
  color: var(--blog-ink);
  font-size: 1.15rem;
  line-height: 1.6;
}

.blog-article__body .blog-block--quote p {
  margin: 0;
}

.blog-block__attribution {
  margin-top: 0.6rem;
  color: var(--blog-muted);
  font-size: 0.9rem;
}

.blog-block--image {
  margin: 2rem 0;
}

.blog-block__image {
  display: block;
  width: 100%;
  border-radius: var(--blog-radius-media);
}

.blog-block__caption {
  margin-top: 0.6rem;
  color: var(--blog-muted);
  font-size: 0.86rem;
  line-height: 1.5;
}

.blog-article__topics {
  list-style: none;
  margin-top: 2.5rem;
  padding: 1.5rem 0 0;
  border-top: 1px solid var(--blog-border);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.blog-article__topic {
  padding: 0.2rem 0.75rem;
  border: 1px solid var(--blog-border-strong);
  border-radius: 999px;
  color: var(--blog-muted);
  font-size: 0.8rem;
  font-weight: 600;
}

/* ── Related articles ─────────────────────────────────────────────────── */

.blog-related {
  max-width: var(--blog-wide-width);
  margin: 4rem auto 0;
  padding-top: 2.5rem;
  border-top: 1px solid var(--blog-border);
}

.blog-related__title {
  margin: 0 0 1.5rem;
  color: var(--blog-ink);
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

@media (prefers-reduced-motion: reduce) {
  .blog-card,
  .blog-public .blog-topbar__button,
  .blog-public a.blog-pagination__page,
  .blog-public a.blog-pagination__step {
    transition: none;
  }

  .blog-card:hover {
    transform: none;
  }
}