/* ===========================================================================
   MassAI Blog & Article Stylesheet
   Extends styles.css brand tokens for articles, blog hub, and article typography.
   =========================================================================== */

/* ----------------------------------------------------------------- blog hub */
.blog-hero {
  padding: 72px 0 48px;
  text-align: center;
  position: relative;
}
.blog-hero__title {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}
.blog-hero__sub {
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 580px;
  margin: 14px auto 0;
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 40px;
}

.blog-card {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  text-decoration: none;
  color: inherit;
}
.blog-card:hover {
  transform: translateY(-4px);
  border-color: rgba(5, 150, 105, 0.35);
  box-shadow: 0 16px 36px rgba(16, 24, 48, 0.07);
}

.blog-card__tag {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  background: rgba(5, 150, 105, 0.08);
  padding: 4px 10px;
  border-radius: 99px;
  margin-bottom: 14px;
}
.blog-card__title {
  font-size: 1.2rem;
  font-weight: 750;
  line-height: 1.35;
  color: var(--text-primary);
  margin-bottom: 10px;
}
.blog-card__excerpt {
  color: var(--text-secondary);
  font-size: 0.94rem;
  line-height: 1.55;
  flex-grow: 1;
}
.blog-card__meta {
  margin-top: 20px;
  padding-top: 14px;
  border-top: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ----------------------------------------------------------------- article page */
.article-header {
  padding: 64px 0 36px;
  border-bottom: 1px solid var(--glass-border);
}
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 18px;
}
.breadcrumbs a {
  color: var(--text-secondary);
  transition: color 0.15s ease;
}
.breadcrumbs a:hover {
  color: var(--accent);
}
.article-title {
  font-size: clamp(2rem, 5.5vw, 3.1rem);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.02em;
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 18px;
  font-size: 0.9rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}
.article-meta__author {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: var(--text-primary);
}
.article-meta__avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 0.75rem;
  font-weight: 700;
}

/* Article Body Typography */
.article-body {
  padding: 48px 0;
  font-size: 1.06rem;
  line-height: 1.75;
  color: var(--text-primary);
}
.article-body p {
  margin-bottom: 22px;
  color: var(--text-secondary);
}
.article-body h2 {
  font-size: 1.65rem;
  font-weight: 750;
  color: var(--text-primary);
  margin: 44px 0 16px;
  letter-spacing: -0.015em;
}
.article-body h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 32px 0 12px;
}
.article-body ul,
.article-body ol {
  margin: 0 0 24px;
  padding-left: 24px;
  color: var(--text-secondary);
}
.article-body li {
  margin-bottom: 10px;
  line-height: 1.65;
}
.article-body strong {
  color: var(--text-primary);
}

/* Key Takeaways Callout Box */
.takeaways-box {
  background: rgba(5, 150, 105, 0.05);
  border: 1px solid rgba(5, 150, 105, 0.2);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  margin: 32px 0 40px;
}
.takeaways-box__title {
  font-size: 1.05rem;
  font-weight: 750;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.takeaways-box ul {
  margin: 0;
  padding-left: 20px;
}
.takeaways-box li {
  color: var(--text-primary);
  font-size: 0.98rem;
  margin-bottom: 8px;
}
.takeaways-box li:last-child {
  margin-bottom: 0;
}

/* Inline Article CTA Card */
.article-cta {
  background: linear-gradient(135deg, #0a0e1a 0%, #101830 100%);
  color: #fff;
  border-radius: var(--radius-xl);
  padding: 36px 32px;
  margin: 48px 0;
  text-align: center;
  box-shadow: 0 16px 40px rgba(16, 24, 48, 0.2);
}
.article-cta h3 {
  font-size: 1.5rem;
  font-weight: 750;
  color: #fff;
  margin-bottom: 10px;
}
.article-cta p {
  color: #a0aec0;
  font-size: 1rem;
  max-width: 520px;
  margin: 0 auto 22px;
}

/* Article Table Styling */
.article-table {
  width: 100%;
  border-collapse: collapse;
  margin: 32px 0;
  font-size: 0.95rem;
}
.article-table th,
.article-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--glass-border);
  text-align: left;
}
.article-table th {
  background: var(--bg-elevated);
  font-weight: 700;
  color: var(--text-primary);
}
.article-table td {
  color: var(--text-secondary);
}

@media (max-width: 920px) {
  .blog-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 620px) {
  .blog-grid {
    grid-template-columns: 1fr;
  }
  .article-cta {
    padding: 28px 20px;
  }
}