/* ============================================================================
   Blog system — shared styles
   Loaded on: blog index, archives, single posts, search.
   Philosophy: calm, warm, editorial. 8px grid. Mobile-first.
   ============================================================================ */

/* ---- Tokens (aliased to the global --bj-* system in site.css) ---- */
/* Typography and font-face are owned by site.css (Lexend). */
:root {
  /* Palette — blog-local aliases resolve to site.css tokens */
  --bg:          var(--bj-surface-alt);
  --surface:     var(--bj-surface);
  --surface-alt: var(--bj-surface-warm);
  --ink:         var(--bj-ink);
  --ink-soft:    var(--bj-ink-soft);
  --ink-mute:    var(--bj-ink-muted);
  --line:        var(--bj-hairline);
  --accent:      var(--bj-yellow);
  --accent-soft: var(--bj-yellow-soft);
  --focus:       var(--bj-focus);

  /* Typography — single Lexend family for display + body */
  --font-display: var(--bj-font-sans);
  --font-body:    var(--bj-font-sans);

  /* 8px spacing scale (kept as legacy aliases) */
  --space-0:   4px;
  --space-1:   8px;
  --space-2:  16px;
  --space-3:  24px;
  --space-4:  32px;
  --space-5:  40px;
  --space-6:  48px;
  --space-7:  64px;
  --space-8:  96px;
  --space-9: 128px;

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(67, 68, 70, 0.06);
  --shadow-md: 0 10px 30px rgba(67, 68, 70, 0.08);

  /* Transitions */
  --t-fast: 120ms ease;
  --t-base: 200ms ease;
}

/* ---- Base reset / normalize (scoped to blog area) ---- */
body.blog,
body.category,
body.archive,
body.single-post,
body.search {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

.bb-blog img,
.bb-blog svg {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Focus — accessible, never removed */
.bb-blog :focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* ---- Layout primitives ---- */
.bb-container {
  width: min(100% - (2 * var(--space-3)), 1200px);
  margin-inline: auto;
}

.bb-container--narrow {
  width: min(100% - (2 * var(--space-3)), 720px);
  margin-inline: auto;
}

.bb-section {
  padding-block: var(--space-5);
}
@media (min-width: 768px) {
  .bb-section { padding-block: var(--space-6); }
}
@media (min-width: 1024px) {
  .bb-section { padding-block: var(--space-7); }
}

.bb-divider {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 0;
}

/* ---- Typography base ---- */
.bb-blog h1,
.bb-blog h2,
.bb-blog h3,
.bb-blog h4 {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--ink);
  margin: 0;
  letter-spacing: -0.01em;
}

.bb-blog p { margin: 0; }

.bb-blog a { color: inherit; }

/* ---- Page header (index / archive) ---- */
.bb-page-header {
  padding-block: var(--space-5) var(--space-4);
  text-align: center;
}
@media (min-width: 1024px) {
  .bb-page-header { padding-block: var(--space-7) var(--space-5); }
}

.bb-page-header__eyebrow {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: var(--space-2);
}

.bb-page-header__title {
  font-size: clamp(2.25rem, 2rem + 1.2vw, 3rem);
  line-height: 1.15;
  margin-bottom: var(--space-1);
}

.bb-page-header__tagline {
  color: var(--ink-soft);
  font-size: 1.0625rem;
  max-width: 52ch;
  margin-inline: auto;
}

/* ---- Category navigation (chips) ---- */
.bb-cat-nav {
  border-block: 1px solid var(--line);
  padding-block: var(--space-2);
}

.bb-cat-nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: var(--space-1);
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  -webkit-overflow-scrolling: touch;
}
.bb-cat-nav__list::-webkit-scrollbar { display: none; }

.bb-cat-nav__item { flex: 0 0 auto; }

.bb-cat-nav__link {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-2);
  border-radius: 999px;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--ink-soft);
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--t-fast), color var(--t-fast);
}
.bb-cat-nav__link:hover { color: var(--ink); background: var(--surface-alt); }
.bb-cat-nav__link[aria-current="page"] {
  color: var(--ink);
  background: var(--accent-soft);
}

/* ---- Pill (category label) ---- */
.bb-pill {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--ink);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  line-height: 1.4;
  transition: background var(--t-fast);
}
.bb-pill:hover { background: var(--bj-yellow); color: var(--bj-yellow-ink); }

/* ---- Featured hero ---- */
.bb-hero {
  margin-block: var(--space-4) var(--space-5);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr;
}
@media (min-width: 1024px) {
  .bb-hero {
    /* minmax(0, …) + min-width on children: image intrinsic width must not expand the track */
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    align-items: stretch;
  }
}

.bb-hero__media {
  position: relative;
  min-width: 0;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--surface-alt);
}
.bb-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 600ms ease;
}
.bb-hero:hover .bb-hero__media img { transform: scale(1.02); }

.bb-hero__body {
  min-width: 0;
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--space-2);
}
@media (min-width: 1024px) { .bb-hero__body { padding: var(--space-6); } }

.bb-hero__title {
  font-size: clamp(1.75rem, 1.5rem + 1vw, 2.5rem);
  line-height: 1.2;
}
.bb-hero__title a {
  color: inherit;
  text-decoration: none;
  background-image: linear-gradient(var(--ink), var(--ink));
  background-repeat: no-repeat;
  background-size: 0% 1px;
  background-position: 0 100%;
  transition: background-size var(--t-base);
}
.bb-hero__title a:hover { background-size: 100% 1px; }

.bb-hero__excerpt {
  color: var(--ink-soft);
  font-size: 1.0625rem;
  max-width: 56ch;
}

.bb-hero__meta {
  font-size: 0.875rem;
  color: var(--ink-mute);
  display: flex;
  gap: var(--space-1);
  align-items: center;
}

/* ---- Article card ---- */
.bb-card {
  position: relative;
  background: transparent;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.bb-card__media {
  display: block;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: var(--radius-md);
  background: var(--surface-alt);
}
.bb-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 500ms ease;
}
.bb-card:hover .bb-card__media img { transform: scale(1.02); }

.bb-card__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.bb-card__title {
  font-size: 1.375rem;
  line-height: 1.3;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.bb-card__title a {
  color: inherit;
  text-decoration: none;
}
.bb-card__title a::after {
  /* full-card clickable overlay (only one tab-stop: the title link) */
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-md);
}

.bb-card__excerpt {
  color: var(--ink-soft);
  font-size: 0.9375rem;
  line-height: 1.55;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.bb-card__meta {
  font-size: 0.8125rem;
  color: var(--ink-mute);
  display: flex;
  gap: var(--space-1);
  align-items: center;
}
.bb-card__meta .sep { opacity: 0.6; }

/* Wide / featured-row variant */
.bb-card--wide .bb-card__media { aspect-ratio: 16 / 9; }
.bb-card--wide .bb-card__title {
  font-size: clamp(1.5rem, 1.375rem + 0.4vw, 1.75rem);
  -webkit-line-clamp: 2;
}

/* ---- Article grid ---- */
.bb-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}
@media (min-width: 768px) {
  .bb-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .bb-grid { grid-template-columns: repeat(3, 1fr); gap: var(--space-5) var(--space-4); }
  .bb-grid > .bb-card--wide { grid-column: span 2; }
}

/* ---- Archive header ---- */
.bb-archive-header {
  padding-block: var(--space-4) var(--space-3);
  border-bottom: 1px solid var(--line);
  margin-bottom: var(--space-5);
}
@media (min-width: 1024px) {
  .bb-archive-header { padding-block: var(--space-6) var(--space-4); }
}
.bb-archive-header__eyebrow {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: var(--space-1);
}
.bb-archive-header__title {
  font-size: clamp(2rem, 1.75rem + 1vw, 2.75rem);
  line-height: 1.2;
  margin-bottom: var(--space-2);
}
.bb-archive-header__intro {
  color: var(--ink-soft);
  font-size: 1.0625rem;
  max-width: 60ch;
}
.bb-archive-header__intro p { margin: 0; }
.bb-archive-header__intro p + p { margin-top: var(--space-1); }

/* ---- Breadcrumbs ---- */
.bb-breadcrumbs {
  padding-block: var(--space-2);
  font-size: 0.875rem;
  color: var(--ink-mute);
}
.bb-breadcrumbs ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-0);
  align-items: center;
}
.bb-breadcrumbs li {
  display: inline-flex;
  align-items: center;
  gap: var(--space-0);
}
.bb-breadcrumbs li + li::before {
  content: '/';
  color: var(--line);
  margin-inline: var(--space-0);
}
.bb-breadcrumbs a {
  color: var(--ink-soft);
  text-decoration: none;
  transition: color var(--t-fast);
}
.bb-breadcrumbs a:hover { color: var(--ink); }
.bb-breadcrumbs [aria-current="page"] { color: var(--ink); }

/* ---- Pagination ---- */
.bb-pagination {
  padding-block: var(--space-5);
  display: flex;
  justify-content: center;
}
.bb-pagination ul,
.bb-pagination .page-numbers {
  display: inline-flex;
  gap: var(--space-0);
  align-items: center;
}
.bb-pagination ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.bb-pagination .page-numbers {
  min-width: 40px;
  height: 40px;
  padding: 0 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
  color: var(--ink-soft);
  text-decoration: none;
  transition: background var(--t-fast), color var(--t-fast);
}
.bb-pagination .page-numbers:hover { background: var(--surface-alt); color: var(--ink); }
.bb-pagination .page-numbers.current {
  background: var(--ink);
  color: #fff;
  font-weight: 500;
}
.bb-pagination .page-numbers.dots { background: none; cursor: default; }

/* ---- CTA blocks (shared) ---- */
.bb-cta {
  background: var(--surface-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  display: grid;
  gap: var(--space-2);
}
@media (min-width: 768px) {
  .bb-cta { padding: var(--space-5); }
}

.bb-cta__eyebrow {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.bb-cta__heading {
  font-family: var(--font-display);
  font-size: clamp(1.375rem, 1.25rem + 0.5vw, 1.75rem);
  line-height: 1.25;
  color: var(--ink);
  margin: 0;
}
.bb-cta__body {
  color: var(--ink-soft);
  font-size: 1rem;
  line-height: 1.6;
}
.bb-cta__body p { margin: 0; }
.bb-cta__body p + p { margin-top: var(--space-1); }

.bb-cta__action {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  justify-self: start;
}

.bb-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  padding: 12px 22px;
  border-radius: 999px;
  background: var(--ink);
  color: #fff;
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  border: 1px solid var(--ink);
  cursor: pointer;
  transition: background var(--t-base), color var(--t-base), border-color var(--t-base), transform var(--t-fast);
}
.bb-button:hover { background: var(--bj-yellow); color: var(--bj-yellow-ink); border-color: var(--bj-yellow); }
.bb-button:active { transform: translateY(1px); }

.bb-button--ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--ink);
}
.bb-button--ghost:hover { background: var(--ink); color: #fff; }

/* Newsletter variant */
.bb-cta--newsletter { }
.bb-cta--newsletter .bb-cta__form {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-1);
}
@media (min-width: 600px) {
  .bb-cta--newsletter .bb-cta__form {
    grid-template-columns: 1fr auto;
  }
}
.bb-cta--newsletter input[type="email"] {
  width: 100%;
  padding: 12px 16px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  font: inherit;
  font-size: 1rem;
}
.bb-cta--newsletter input[type="email"]:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 1px;
}
.bb-cta--newsletter .bb-cta__fineprint {
  font-size: 0.8125rem;
  color: var(--ink-mute);
  line-height: 1.5;
}

/* Guide variant (with image) */
.bb-cta--guide {
  grid-template-columns: 1fr;
}
@media (min-width: 768px) {
  .bb-cta--guide {
    grid-template-columns: 180px 1fr;
    align-items: center;
    gap: var(--space-4);
  }
}
.bb-cta--guide .bb-cta__image {
  aspect-ratio: 3 / 4;
  overflow: hidden;
  border-radius: var(--radius-md);
  background: var(--surface);
}
.bb-cta--guide .bb-cta__image img { width: 100%; height: 100%; object-fit: cover; }

/* Product variant */
.bb-cta--product {
  grid-template-columns: 1fr;
}
@media (min-width: 768px) {
  .bb-cta--product {
    grid-template-columns: 240px 1fr;
    align-items: center;
    gap: var(--space-4);
  }
}
.bb-cta--product .bb-cta__image {
  aspect-ratio: 1 / 1;
  overflow: hidden;
  border-radius: var(--radius-md);
  background: var(--surface);
}
.bb-cta--product .bb-cta__image img { width: 100%; height: 100%; object-fit: cover; }

/* Inline placement (inside article body) is narrower, no image sidebar by default */
.bb-cta--inline {
  margin-block: var(--space-4);
}

/* ---- Search form ---- */
.bb-search {
  display: flex;
  gap: var(--space-1);
  max-width: 480px;
}
.bb-search input[type="search"] {
  flex: 1;
  padding: 12px 16px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  font: inherit;
  font-size: 1rem;
}
.bb-search input[type="search"]:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 1px;
}

/* ---- Screen-reader-only ---- */
.bb-sr-only {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0);
  white-space: nowrap; border: 0;
}