/* DataGen blog — shared layout, cards, article prose, share strip, comments */

:root {
  --blog-accent: #3b82f6;
  --blog-accent-soft: rgba(59, 130, 246, 0.15);
  --blog-violet: #8b5cf6;
  --blog-card-bg: rgba(26, 29, 36, 0.92);
  --blog-card-border: rgba(100, 116, 139, 0.35);
  /* Prose links — high contrast on dark (aligned with style.css) */
  --blog-link-inline: #7dd3fc;
  --blog-link-inline-hover: #f0f9ff;
  --blog-link-inline-visited: #c4b5fd;
}

/* Page shell: global body background comes from style.css (--app-atmosphere) */
.blog-body {
  min-height: 100vh;
}

.blog-topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(30, 41, 59, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border, #475569);
}

.blog-topbar-inner {
  max-width: var(--layout-max-width, min(1440px, 96vw));
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.blog-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-primary, #e8eaed);
}

/* Lockup image: ../datagen-logo.png + .blog-brand-lockup-img in ../style.css */
.blog-brand .blog-brand-lockup-img {
    flex-shrink: 0;
}

.blog-brand-text strong {
  display: block;
  font-size: 0.95rem;
  letter-spacing: -0.02em;
}

.blog-brand-text span {
  font-size: 0.75rem;
  color: var(--text-secondary, #94a3b8);
}

/* Reuses .header-actions + .feedback-button-header from style.css (same as main app) */
.blog-nav-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

/* ——— Index ——— */
.blog-hero {
  max-width: var(--layout-max-width, min(1440px, 96vw));
  margin: 0 auto;
  padding: 48px 20px 32px;
  text-align: center;
}

.blog-hero h1 {
  font-size: clamp(1.75rem, 4vw, 2.35rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin: 0 0 12px;
  background: linear-gradient(120deg, #f8fafc 0%, #cbd5e1 40%, #93c5fd 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.blog-hero-lead {
  max-width: 560px;
  margin: 0 auto 28px;
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--text-secondary, #b4bcc8);
}

.blog-hero-cta {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.blog-hero-cta a {
  text-decoration: none;
}

@media (min-width: 1024px) {
  .blog-hero {
    text-align: left;
  }

  .blog-hero-lead {
    margin-left: 0;
    margin-right: auto;
  }

  .blog-hero-cta {
    justify-content: flex-start;
  }
}

.blog-index-main {
  max-width: var(--layout-max-width, min(1440px, 96vw));
  margin: 0 auto;
  padding: 0 20px 72px;
}

.blog-section-title {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #64748b;
  margin: 0 0 16px;
}

.blog-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}

.blog-card {
  display: flex;
  flex-direction: column;
  text-align: left;
  background: var(--blog-card-bg);
  border: 1px solid var(--blog-card-border);
  border-radius: 16px;
  padding: 22px 22px 20px;
  text-decoration: none;
  color: inherit;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  position: relative;
  overflow: hidden;
}

.blog-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--blog-accent), var(--blog-violet));
  opacity: 0.85;
}

.blog-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.35);
  border-color: rgba(59, 130, 246, 0.4);
}

.blog-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}

.blog-tag {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 4px 8px;
  border-radius: 6px;
  background: rgba(59, 130, 246, 0.2);
  color: #93c5fd;
}

.blog-tag--mcp {
  background: rgba(139, 92, 246, 0.22);
  color: #c4b5fd;
}

.blog-tag--x402 {
  background: rgba(245, 158, 11, 0.18);
  color: #fcd34d;
}

.blog-card h2 {
  font-size: 1.2rem;
  margin: 0 0 10px;
  color: var(--text-primary, #e8eaed);
  line-height: 1.35;
}

.blog-card-excerpt {
  flex: 1;
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--text-secondary, #94a3b8);
  margin: 0 0 16px;
}

.blog-card-meta {
  font-size: 0.8rem;
  color: #64748b;
  display: flex;
  align-items: center;
  gap: 8px;
}

.blog-empty {
  text-align: center;
  padding: 48px 24px;
  border: 1px dashed var(--border, #2d333b);
  border-radius: 16px;
  color: var(--text-secondary, #94a3b8);
  font-size: 0.95rem;
}

/* ——— Article ——— */
.blog-article-wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 28px 20px 80px;
}

.blog-article {
  font-size: 1.02rem;
}

.blog-article h1 {
  font-size: clamp(1.5rem, 3.5vw, 1.85rem);
  line-height: 1.25;
  margin: 0 0 12px;
  color: var(--text-primary, #f1f5f9);
  letter-spacing: -0.02em;
}

.blog-article-meta {
  font-size: 0.9rem;
  color: #94a3b8;
  margin-bottom: 28px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border, #2d333b);
}

.blog-article-meta a {
  color: var(--blog-link-inline);
  text-decoration: underline;
  text-underline-offset: 0.15em;
  text-decoration-color: rgba(125, 211, 252, 0.4);
}

.blog-article-meta a:hover {
  color: var(--blog-link-inline-hover);
  text-decoration-color: rgba(240, 249, 255, 0.55);
}

.blog-article-meta a:visited {
  color: var(--blog-link-inline-visited);
}

.blog-article-meta a:focus-visible {
  outline: 2px solid var(--blog-link-inline);
  outline-offset: 3px;
  border-radius: 2px;
}

/* Body copy links (default blue is hard to read on slate) */
.blog-article :is(p, li, blockquote, td) a {
  color: var(--blog-link-inline);
  text-decoration: underline;
  text-underline-offset: 0.18em;
  text-decoration-color: rgba(125, 211, 252, 0.42);
}

.blog-article :is(p, li, blockquote, td) a:hover {
  color: var(--blog-link-inline-hover);
  text-decoration-color: rgba(240, 249, 255, 0.55);
}

.blog-article :is(p, li, blockquote, td) a:visited {
  color: var(--blog-link-inline-visited);
}

.blog-article :is(p, li, blockquote, td) a:focus-visible {
  outline: 2px solid var(--blog-link-inline);
  outline-offset: 3px;
  border-radius: 2px;
}

.blog-article h2 {
  font-size: 1.2rem;
  margin: 2.25rem 0 0.65rem;
  color: var(--text-primary, #e8eaed);
}

.blog-article h3 {
  font-size: 1rem;
  margin: 1.35rem 0 0.5rem;
  color: var(--text-primary, #e8eaed);
}

.blog-article p,
.blog-article li {
  color: var(--text-secondary, #b4bcc8);
  line-height: 1.75;
}

.blog-article ul {
  padding-left: 1.25rem;
}

.blog-article li {
  margin: 0.45rem 0;
}

.blog-article code {
  background: rgba(255, 255, 255, 0.06);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.88em;
}

.blog-article pre {
  background: #12141a;
  border: 1px solid var(--border, #2d333b);
  border-radius: 10px;
  padding: 16px 18px;
  overflow-x: auto;
  font-size: 0.82rem;
  line-height: 1.45;
  color: #d6dae3;
  margin: 12px 0 0;
}

.blog-article .card {
  background: var(--bg-secondary, #1a1d24);
  border: 1px solid var(--border, #2d333b);
  border-radius: 12px;
  padding: 18px 20px;
  margin: 18px 0;
}

.blog-article .card ul {
  margin: 0;
}

.modes-figure {
  margin: 1.25rem 0 1.5rem;
  border: 1px solid var(--border, #2d333b);
  border-radius: 14px;
  overflow: hidden;
  background: linear-gradient(180deg, #16181e 0%, #12141a 100%);
}

.modes-figure svg {
  display: block;
  width: 100%;
  height: auto;
}

.mode-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin: 1rem 0 1.25rem;
  align-items: stretch;
}

@media (max-width: 680px) {
  .mode-compare {
    grid-template-columns: 1fr;
  }
}

.mode-callout {
  border-radius: 12px;
  padding: 16px 18px;
  border: 1px solid var(--border, #2d333b);
}

.mode-callout--agent {
  border-color: rgba(59, 130, 246, 0.45);
  background: linear-gradient(145deg, rgba(59, 130, 246, 0.14) 0%, rgba(99, 102, 241, 0.06) 100%);
}

.mode-callout--schema {
  border-color: rgba(148, 163, 184, 0.35);
  background: rgba(255, 255, 255, 0.03);
}

.mode-callout h3 {
  font-size: 0.95rem;
  margin: 0 0 0.5rem;
  color: var(--text-primary, #e8eaed);
}

.mode-callout p {
  margin: 0 0 0.6rem;
  font-size: 0.92rem;
}

.mode-callout p:last-child {
  margin-bottom: 0;
}

.mode-badge {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 6px;
  display: inline-block;
  margin-right: 6px;
}

.mode-badge--agent {
  background: rgba(59, 130, 246, 0.28);
  color: #bfdbfe;
}

.mode-badge--schema {
  background: rgba(148, 163, 184, 0.2);
  color: #cbd5e1;
}

.x402-box {
  border-left: 3px solid #f59e0b;
  padding: 16px 18px;
  margin: 1.25rem 0;
  background: rgba(245, 158, 11, 0.08);
  border-radius: 0 12px 12px 0;
}

.x402-box p:last-child {
  margin-bottom: 0;
}

.notice-paid {
  border-left: 3px solid #a78bfa;
  margin: 1.25rem 0;
  background: rgba(167, 139, 250, 0.08);
  border-radius: 0 12px 12px 0;
  padding: 16px 18px;
}

.tool-name {
  color: #a5b4fc;
  font-family: ui-monospace, Consolas, monospace;
  font-size: 0.88em;
}

.api-doc-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 1.75rem;
}

.api-doc-actions a {
  text-decoration: none;
}

.fine-print {
  font-size: 0.88rem;
  color: var(--text-secondary, #94a3b8);
  margin-top: 1rem;
}

/* Share strip */
.blog-share {
  margin: 40px 0 28px;
  padding: 20px 22px;
  border-radius: 14px;
  border: 1px solid var(--border, #2d333b);
  background: linear-gradient(165deg, rgba(30, 41, 59, 0.5) 0%, rgba(15, 23, 42, 0.6) 100%);
}

.blog-share-title {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #64748b;
  margin: 0 0 14px;
}

.blog-share-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.blog-share-buttons button,
.blog-share-buttons a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 10px;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid var(--border, #2d333b);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-primary, #e8eaed);
  text-decoration: none;
  transition: background 0.15s, border-color 0.15s, transform 0.15s;
}

.blog-share-buttons a:hover,
.blog-share-buttons button:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(148, 163, 184, 0.4);
  transform: translateY(-1px);
}

.blog-share-buttons .blog-share-linkedin {
  border-color: rgba(10, 102, 194, 0.45);
  color: #7dd3fc;
}

.blog-share-buttons .blog-share-x {
  border-color: rgba(148, 163, 184, 0.35);
  color: #e2e8f0;
}

.blog-share-buttons .blog-share-copy.blog-share-copied {
  border-color: rgba(34, 197, 94, 0.5);
  color: #86efac;
}

/* Interactive CBDC series (in-article): match slate-900 / border-slate-700 cards */
.blog-share.blog-share--series {
  margin: 0 0 1.25rem;
  padding: 1.25rem 1.35rem;
  border-radius: 0.75rem;
  background: rgba(15, 23, 42, 0.92);
  border: 1px solid rgba(51, 65, 85, 0.65);
  box-shadow: 0 18px 40px -28px rgba(0, 0, 0, 0.65);
}

.blog-share.blog-share--series .blog-share-title {
  color: #64748b;
}

/* Comments */
.blog-comments {
  margin-top: 8px;
  padding: 24px 0 8px;
  border-top: 1px solid var(--border, #2d333b);
}

.blog-comments-title {
  font-size: 1.05rem;
  margin: 0 0 8px;
  color: var(--text-primary, #e8eaed);
}

.blog-comments-lead {
  font-size: 0.88rem;
  color: #94a3b8;
  margin: 0 0 20px;
  line-height: 1.55;
}

.blog-comments .utterances {
  max-width: 100%;
}

.blog-comments.blog-comments--series {
  margin-top: 1.5rem;
  padding: 0 0 0.5rem;
  border-top: 1px solid rgba(51, 65, 85, 0.45);
}

.blog-comments.blog-comments--series .blog-comments-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
}

.blog-comments.blog-comments--series .blog-comments-lead a {
  color: #93c5fd;
}

.blog-comments.blog-comments--series .blog-comments-lead a:hover {
  color: #e2e8f0;
}