/* ============================================================
   OpenACP Blog — Stylesheet
   Extends the main design system for blog pages
   ============================================================ */

/* --- Blog Hero (listing page) --- */
.blog-hero {
  padding: 140px 0 var(--space-lg);
  text-align: center;
}

.blog-hero-title {
  font-size: clamp(2.4rem, 5vw, 3.5rem);
  margin-bottom: var(--space-sm);
}

.blog-hero-sub {
  max-width: 520px;
  margin: 0 auto;
  color: var(--color-text-muted);
}

.nav-active { color: var(--color-text) !important; font-weight: 600 !important; }

/* --- Blog Grid (listing page) --- */
.blog-listing { padding-top: 0; }

.blog-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}

.blog-card {
  display: flex;
  flex-direction: column;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease;
  text-decoration: none;
  color: inherit;
}

.blog-card:hover {
  border-color: var(--color-text-muted);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
  transform: translateY(-2px);
  color: inherit;
}

.blog-card-img {
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--color-surface);
}

.blog-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .3s ease;
}

.blog-card:hover .blog-card-img img {
  transform: scale(1.03);
}

.blog-card-body {
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: .5rem;
  flex: 1;
}

.blog-card-tags {
  display: flex;
  gap: .4rem;
  flex-wrap: wrap;
}

.blog-card-tags span {
  font-size: .7rem;
  font-weight: 500;
  padding: .2em .7em;
  background: var(--color-bg-alt);
  border-radius: var(--radius-pill);
  color: var(--color-text-muted);
}

.blog-card-title {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  line-height: 1.3;
  margin: 0;
}

.blog-card-body > .body-text {
  font-size: .9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  flex: 1;
}

.blog-card-date {
  font-size: .78rem;
  color: var(--color-text-muted);
  margin-top: auto;
}

/* --- Blog Detail Page --- */
.blog-article-hero {
  padding: 120px 0 0;
}

.blog-back {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  font-size: .88rem;
  font-weight: 500;
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
  transition: color .2s;
}

.blog-back:hover { color: var(--color-text); }

.blog-article-meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  flex-wrap: wrap;
  margin-bottom: var(--space-md);
}

.blog-article-author {
  font-size: .88rem;
  font-weight: 500;
  color: var(--color-text);
}

.blog-article-date {
  font-size: .85rem;
  color: var(--color-text-muted);
}

.blog-article-tags {
  display: flex;
  gap: .4rem;
  flex-wrap: wrap;
}

.blog-article-tags span {
  font-size: .7rem;
  font-weight: 500;
  padding: .2em .7em;
  background: var(--color-bg-alt);
  border-radius: var(--radius-pill);
  color: var(--color-text-muted);
}

.blog-article-title {
  font-size: clamp(2rem, 5vw, 3rem);
  margin-bottom: var(--space-sm);
}

.blog-article-description {
  font-size: 1.15rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 640px;
  margin-bottom: var(--space-lg);
}

.blog-article-cover {
  width: 100%;
  max-width: 900px;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin: 0 auto var(--space-xl);
}

.blog-article-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* --- Article Content --- */
.blog-content {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 var(--space-md) var(--space-2xl);
}

.blog-content h2 {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(1.5rem, 3vw, 2rem);
  line-height: 1.2;
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.blog-content h3 {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 1.15rem;
  margin-top: var(--space-lg);
  margin-bottom: var(--space-xs);
  color: var(--color-text);
}

.blog-content p {
  margin-bottom: var(--space-sm);
  color: var(--color-text-secondary);
  font-size: 1rem;
  line-height: 1.75;
}

.blog-content ul, .blog-content ol {
  margin-bottom: var(--space-sm);
  padding-left: 1.5rem;
  list-style: disc;
}

.blog-content ol { list-style: decimal; }

.blog-content li {
  margin-bottom: .5rem;
  color: var(--color-text-secondary);
  font-size: 1rem;
  line-height: 1.7;
}

.blog-content strong { color: var(--color-text); font-weight: 600; }

.blog-content a {
  color: var(--color-text);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color .2s;
}

.blog-content a:hover { color: var(--color-text-secondary); }

.blog-content code {
  font-family: var(--font-mono);
  font-size: .88em;
  padding: .15em .4em;
  background: var(--color-surface);
  border-radius: 4px;
  color: var(--color-text);
}

.blog-content pre {
  background: #1a1a1a;
  border-radius: var(--radius);
  padding: var(--space-md);
  overflow-x: auto;
  margin-bottom: var(--space-md);
}

.blog-content pre code {
  background: none;
  padding: 0;
  color: #f0f0f0;
  font-size: .88rem;
  line-height: 1.7;
}

.blog-content blockquote {
  border-left: 3px solid var(--color-border);
  padding: var(--space-xs) var(--space-md);
  margin: var(--space-md) 0;
  color: var(--color-text-muted);
  font-style: italic;
}

.blog-content table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--space-md);
  font-size: .93rem;
}

.blog-content th, .blog-content td {
  text-align: left;
  padding: .75rem 1rem;
  border-bottom: 1px solid var(--color-border);
}

.blog-content th {
  font-weight: 600;
  color: var(--color-text);
  background: var(--color-bg-alt);
}

.blog-content td { color: var(--color-text-secondary); }

/* --- CTA Section (bottom of blog post) --- */
.blog-cta {
  max-width: 720px;
  margin: 0 auto;
  padding: var(--space-xl) var(--space-md);
  text-align: center;
  border-top: 1px solid var(--color-border);
}

.blog-cta h2 {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: 1.8rem;
  margin-bottom: var(--space-sm);
}

.blog-cta .terminal {
  max-width: 460px;
  margin: var(--space-md) auto;
}

.blog-cta-links {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  flex-wrap: wrap;
  margin-top: var(--space-md);
}

/* --- Related Posts --- */
.blog-related {
  max-width: 720px;
  margin: 0 auto;
  padding: var(--space-lg) var(--space-md) var(--space-xl);
}

.blog-related h3 {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

.blog-related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

.blog-related-card {
  display: block;
  padding: var(--space-md);
  background: var(--color-bg-alt);
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: inherit;
  transition: background .2s;
}

.blog-related-card:hover {
  background: var(--color-surface);
  color: inherit;
}

.blog-related-card h4 {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: 1.1rem;
  line-height: 1.3;
  color: var(--color-text);
  margin-bottom: .25rem;
}

.blog-related-card p {
  font-size: .82rem;
  color: var(--color-text-muted);
}

/* --- Animations --- */
.anim-fade {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .5s ease, transform .5s ease;
  transition-delay: calc(var(--i, 0) * .08s);
}

.anim-fade.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .blog-grid {
    grid-template-columns: 1fr;
  }

  .blog-related-grid {
    grid-template-columns: 1fr;
  }

  .blog-article-hero {
    padding: 100px 0 0;
  }
}

@media (max-width: 480px) {
  .blog-hero {
    padding: 110px 0 var(--space-sm);
  }
}