/* ============================================================
   BLOG PAGE STYLES
   Article layouts, cards, typography, author sections
============================================================ */

/* Article Panel */
.article-panel {
  position: relative;
  overflow: hidden;
}

.article-panel::before {
  display: none;
}

/* Typography */
.lede {
  font-size: 1.06rem;
  color: var(--color-ink-muted);
  margin-top: var(--space-3);
  margin-bottom: 0;
  line-height: 1.75;
  max-width: 68ch;
}

/* Grid & Cards */
.grid {
  display: grid;
  gap: var(--space-5);
}

.cards {
  grid-template-columns: repeat(1, minmax(0, 1fr));
  align-items: stretch;
}

.card {
  background: #FFFFFF;
  border: 1px solid var(--color-border);
  height: 100%;
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
}

.card h3 a {
  color: var(--color-ink-strong);
  text-decoration: none;
}

.card h3 a:hover {
  color: var(--color-brand-action);
}

.card-hero {
  margin: calc(var(--space-4) * -1) calc(var(--space-4) * -1) var(--space-3);
  aspect-ratio: 16/9;
  max-height: 220px;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  background: #F1F5F9;
}

.card-hero img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Meta & Chips */
.meta {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  color: var(--color-ink-muted);
  font-size: .9rem;
  margin: var(--space-2) 0 var(--space-3);
}

.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: #fff;
}

.card > div:last-child {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  overflow: hidden;
}

.chip {
  display: inline-block;
  background: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 3px 9px;
  color: var(--color-brand-primary);
  font-size: .78rem;
  font-weight: 500;
  white-space: nowrap;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Hero Media */
.hero {
  margin: var(--space-5) 0 var(--space-6);
}

.hero-media {
  aspect-ratio: 16/9;
  max-height: min(42vh, 420px);
  overflow: hidden;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  background: #F1F5F9;
}

.hero img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.hero figcaption,
.caption {
  font-size: .85rem;
  color: var(--color-ink-muted);
  margin-top: var(--space-2);
}

/* Post Eyebrow */
.post-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid #D6F5E9;
  background: #EDFAF4;
  color: #006B44;
  font-weight: 600;
  font-size: .78rem;
  letter-spacing: .02em;
}

/* Article Header */
.article-header {
  padding-bottom: var(--space-5);
  border-bottom: 1px solid #E8EDF3;
}

.post-meta-stack {
  display: grid;
  gap: var(--space-4);
  margin: var(--space-5) 0 var(--space-6);
}

.post-author {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  padding: var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: #fff;
}

.post-author .author-avatar {
  width: 52px;
  height: 52px;
  padding: 6px;
}

.post-dates {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  color: var(--color-ink-muted);
  font-size: .9rem;
}

article h1 {
  font-size: 2.3rem;
  line-height: 1.12;
  margin: var(--space-4) 0 0;
  max-width: 24ch;
}

/* Article Layout */
.article-layout {
  display: grid;
  gap: var(--space-5);
  align-items: start;
}

.article-body {
  max-width: 74ch;
  counter-reset: sec;
}

.article-body h2 {
  font-size: 1.62rem;
  line-height: 1.22;
  margin: 2.1rem 0 .7rem;
  counter-increment: sec;
  counter-reset: subsec;
}

.article-body h2::before {
  content: counter(sec) ". ";
  color: #567;
}

.article-body h2.no-number {
  counter-increment: none;
}

.article-body h2.no-number::before {
  content: none;
}

.article-body h3 {
  font-size: 1.28rem;
  line-height: 1.3;
  margin: 1.45rem 0 .6rem;
  counter-increment: subsec;
}

.article-body h3::before {
  content: counter(subsec, upper-alpha) ". ";
  color: #678;
}

.article-body h3.no-number {
  counter-increment: none;
}

.article-body h3.no-number::before {
  content: none;
}

.article-body p {
  margin: .95rem 0;
  line-height: 1.74;
  color: #0B1220;
}

.article-body ul,
.article-body ol {
  padding-left: 1.3rem;
  line-height: 1.7;
}

.article-body li {
  margin: .35rem 0;
}

.article-body blockquote {
  margin: 1.2rem 0;
  padding: 12px 14px;
  border-left: 4px solid var(--color-brand-action);
  background: #F3F8F6;
  border-radius: 10px;
}

.article-body figure {
  margin: 1.35rem auto;
  max-width: min(100%, 780px);
}

.article-body figure img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 320px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: #F1F5F9;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.article-body th,
.article-body td {
  border-bottom: 1px solid var(--color-border);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}

.article-body th {
  background: #F7FAFC;
  font-weight: 600;
}

/* Code */
code {
  background: #F1F5F9;
  padding: 2px 5px;
  border-radius: 6px;
}

pre {
  background: #001A24;
  border-radius: var(--radius-md);
  padding: var(--space-4);
  overflow-x: auto;
  font-size: 0.875rem;
  line-height: 1.6;
}

pre code.hljs {
  background: transparent;
  padding: 0;
  font-size: inherit;
}

/* CTA Row */
.btn-row {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-top: var(--space-3);
}

/* CTA Box */
.cta {
  margin-top: var(--space-8);
  background: #EDFAF4;
  border: 1px solid #D6F5E9;
  border-radius: var(--radius-lg);
  padding: var(--space-5);
}

.cta .btn {
  padding: 0.625rem 1.25rem;
  height: 40px;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

/* Author Card */
.author-card {
  margin-top: var(--space-7);
  padding: var(--space-4);
  border: 1px solid #DCE3EA;
  background: #fff;
  border-radius: var(--radius-lg);
}

.author-layout {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.author-avatar {
  width: 60px;
  height: 60px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: white;
  padding: 8px;
}

.author-name {
  font-weight: 700;
  line-height: 1.3;
}

/* Table of Contents */
.toc {
  background: #F1F5F9;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  margin: var(--space-3) 0 var(--space-5);
}

.toc-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 700;
  font-size: .9rem;
  color: #002A3A;
}

.toc ul {
  margin: var(--space-2) 0 0;
  padding-left: 0;
  list-style: none;
}

.toc li {
  margin: var(--space-2) 0;
}

.toc li a {
  display: block;
  padding: 5px 8px;
  border-radius: var(--radius-sm);
  color: #1E293B;
}

.toc li a:hover {
  background: #EDF3F8;
  text-decoration: none;
}

.toc .toc-l3 {
  margin-left: var(--space-3);
}

/* Search Box */
.search-box {
  display: flex;
  gap: var(--space-2);
  align-items: center;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
}

.search-box input {
  border: 0;
  outline: none;
  flex: 1;
  font: inherit;
  background: #FFFFFF;
  color: var(--color-ink-strong);
}

/* Responsive: Tablet */
@media (min-width: 700px) {
  .cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: stretch;
  }

  article h1 {
    font-size: 2.7rem;
  }

  .article-header {
    padding-bottom: var(--space-4);
  }

  .hero-media {
    max-height: min(56vh, 520px);
  }

  .article-body figure img {
    max-height: 460px;
  }
}

/* Responsive: Desktop */
@media (min-width: 1024px) {
  .cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: stretch;
  }

  .article-layout {
    grid-template-columns: 250px minmax(0, 1fr);
    gap: var(--space-6);
  }

  .toc {
    position: sticky;
    top: 20px;
  }
}
/* Shell layout - content container for blog/docs */
.shell {
  max-width: var(--container-lg);
  margin: 0 auto;
  padding: var(--space-8) var(--space-4) var(--space-10);
}
@media (min-width: 640px) {
  .shell { padding: var(--space-9) var(--space-6) var(--space-11); }
}
@media (min-width: 1024px) {
  .shell { padding: var(--space-9) var(--space-8) var(--space-12); }
}

/* ============================================================
   OPAQUE BACKGROUNDS — prevent page-grid-bg bleed-through
============================================================ */
.blog-list-page,
.article-panel,
.shell {
  position: relative;
  z-index: 1;
  background: var(--color-bg, #F8FAFC);
}

/* ============================================================
   MOBILE RESPONSIVENESS
============================================================ */
@media (max-width: 767px) {
  /* Article layout: stack sidebar below header, hide TOC on mobile */
  .article-layout {
    grid-template-columns: 1fr;
    gap: var(--space-5, 24px);
  }
  .toc {
    display: none;
  }

  /* Article typography */
  .article-body {
    max-width: 100%;
    overflow-x: hidden;
  }
  .article-body h2 {
    font-size: 1.3rem;
  }
  .article-body h3 {
    font-size: 1.1rem;
  }

  /* Shell padding */
  .shell {
    padding: var(--space-6, 24px) var(--space-4, 16px) var(--space-8, 32px);
  }

  /* Blog card grid: single column */
  .cards {
    grid-template-columns: 1fr !important;
  }

  /* Article header */
  .article-header {
    padding-bottom: var(--space-4, 16px);
  }
  h1.article-title,
  .article-panel h1 {
    font-size: clamp(24px, 7vw, 36px);
    line-height: 1.25;
  }

  /* Code blocks — horizontal scroll, not overflow */
  pre {
    max-width: calc(100vw - 48px);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    box-sizing: border-box;
  }
  pre code {
    white-space: pre;
    max-width: none;
    min-width: min-content;
    display: block;
  }

  /* Tables — horizontal scroll */
  .article-body table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    max-width: 100%;
  }
}

/* ============================================================
   BREADCRUMB
============================================================ */
.breadcrumb {
  max-width: var(--container-lg);
  margin: 0 auto;
  padding: var(--space-6) var(--space-4) var(--space-4);
}
@media (min-width: 640px) {
  .breadcrumb { padding-left: var(--space-6); padding-right: var(--space-6); padding-top: var(--space-7); }
}
@media (min-width: 1024px) {
  .breadcrumb { padding-left: var(--space-8); padding-right: var(--space-8); padding-top: var(--space-7); }
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0;
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 0.875rem;
  color: var(--color-ink-muted);
  line-height: 1.6;
}

.breadcrumb li + li::before {
  content: "›";
  margin: 0 0.45em;
  color: var(--color-border);
}

.breadcrumb a {
  color: var(--color-ink-muted);
  text-decoration: none;
}
.breadcrumb a:hover {
  color: var(--color-ink);
  text-decoration: underline;
}

.breadcrumb li[aria-current="page"] {
  color: var(--color-ink);
  font-weight: 500;
}