/* ============================================================
   FABIUS - Article Page Stylesheet
   Moltke-aligned editorial theme for generated blog articles.
   ============================================================ */

html,
body {
  min-height: 100%;
}

body {
  display: flex;
  flex-direction: column;
  margin: 0;
  background:
    radial-gradient(circle at 12% 10%, rgba(59, 130, 246, 0.08) 0%, transparent 28%),
    radial-gradient(circle at 86% 16%, rgba(87, 223, 254, 0.08) 0%, transparent 22%),
    var(--fab-bg-0);
  color: var(--fab-text-0);
  font-family: var(--fab-font-sans, 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(252, 249, 248, 0.82);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(114, 119, 133, 0.12);
}

.site-nav {
  max-width: 1240px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 2rem;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: inherit;
}

.logo-shield-svg {
  width: 24px;
  height: 24px;
  color: var(--fab-shield-blue);
  filter: drop-shadow(0 8px 18px rgba(59, 130, 246, 0.16));
}

.logo-text {
  font-family: var(--fab-font-display, 'Space Grotesk', 'Inter', sans-serif);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--fab-shield-dark), var(--fab-shield-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: flex-end;
  flex: 1 1 auto;
}

.nav-links a {
  font-family: var(--fab-font-display, 'Space Grotesk', 'Inter', sans-serif);
  color: var(--fab-text-1);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 500;
  transition: color 180ms ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--fab-shield-blue);
}

.article-main {
  flex: 1;
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 3.25rem 2rem 5rem;
}

.article-content {
  max-width: 780px;
  margin: 0 auto;
  padding: clamp(1.5rem, 2vw, 2rem);
  border-radius: 30px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(114, 119, 133, 0.12);
  box-shadow: 0 20px 44px rgba(27, 28, 28, 0.07);
  font-size: 1rem;
  line-height: 1.82;
  color: var(--fab-text-1);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem 1rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
  font-size: 0.8rem;
  color: var(--fab-text-2);
}

.article-category {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  background: rgba(216, 226, 255, 0.62);
  color: var(--fab-shield-dark);
  font-family: var(--fab-font-display, 'Space Grotesk', 'Inter', sans-serif);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.article-author {
  font-weight: 600;
}

.article-content h1,
.article-content h2,
.article-content h3,
.article-content h4 {
  font-family: var(--fab-font-display, 'Space Grotesk', 'Inter', sans-serif);
  color: var(--fab-text-0);
  letter-spacing: -0.03em;
}

.article-content h1 {
  margin: 0 0 1.4rem;
  font-size: clamp(2.5rem, 5vw, 4.35rem);
  line-height: 0.96;
}

.article-content h2 {
  margin: 3rem 0 1rem;
  font-size: clamp(1.7rem, 2vw, 2.3rem);
}

.article-content h3 {
  margin: 2.25rem 0 0.85rem;
  font-size: 1.3rem;
}

.article-content h4 {
  margin: 1.75rem 0 0.75rem;
  font-size: 1rem;
}

.article-content p {
  margin: 1rem 0;
}

.article-content a {
  color: var(--fab-shield-blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(59, 130, 246, 0.22);
  transition: color 180ms ease, border-color 180ms ease;
}

.article-content a:hover {
  color: var(--fab-shield-dark);
  border-bottom-color: rgba(33, 112, 228, 0.42);
}

.article-content strong {
  color: var(--fab-text-0);
  font-weight: 700;
}

.article-content em {
  color: var(--fab-text-2);
}

.article-content ul,
.article-content ol {
  padding-left: 1.35rem;
  margin: 1rem 0;
}

.article-content li {
  margin: 0.55rem 0;
}

.article-content li::marker {
  color: var(--fab-shield-blue);
}

.code-block {
  margin: 1.4rem 0;
  padding: 1rem 1.1rem;
  border-radius: 18px;
  overflow-x: auto;
  background: rgba(246, 243, 242, 0.92);
  border: 1px solid rgba(114, 119, 133, 0.14);
}

.code-block code {
  font-family: var(--fab-font-mono, 'JetBrains Mono', monospace);
  color: var(--fab-text-0);
  background: none;
  padding: 0;
}

.inline-code {
  display: inline-block;
  padding: 0.08rem 0.38rem;
  border-radius: 8px;
  background: rgba(216, 226, 255, 0.46);
  color: var(--fab-shield-dark);
  font-family: var(--fab-font-mono, 'JetBrains Mono', monospace);
  font-size: 0.88em;
}

.mermaid-diagram {
  margin: 1.6rem 0;
  padding: 1rem;
  border-radius: 22px;
  background: linear-gradient(180deg, rgba(249, 250, 252, 0.95), rgba(244, 247, 251, 0.92));
  border: 1px solid rgba(114, 119, 133, 0.14);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.65);
}

.mermaid-diagram-canvas {
  min-height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow-x: auto;
  padding: 0.25rem;
}

.mermaid-diagram-canvas svg {
  max-width: 100%;
  height: auto;
}

.mermaid-diagram.is-rendered .mermaid-diagram-source {
  display: none;
}

.mermaid-diagram.is-error {
  border-color: rgba(183, 69, 69, 0.22);
  background: linear-gradient(180deg, rgba(255, 247, 247, 0.96), rgba(255, 251, 250, 0.94));
}

.mermaid-diagram-source {
  margin-top: 0.9rem;
}

.article-content hr {
  border: 0;
  border-top: 1px solid rgba(114, 119, 133, 0.14);
  margin: 2.4rem 0;
}

.article-content blockquote {
  margin: 1.5rem 0;
  padding: 0.95rem 1.1rem;
  border-left: 3px solid var(--fab-shield-blue);
  border-radius: 0 18px 18px 0;
  background: rgba(216, 226, 255, 0.32);
  color: var(--fab-text-1);
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 2.4rem;
  padding-top: 1.35rem;
  border-top: 1px solid rgba(114, 119, 133, 0.14);
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.36rem 0.75rem;
  border-radius: 999px;
  background: rgba(246, 243, 242, 0.94);
  border: 1px solid rgba(114, 119, 133, 0.12);
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--fab-text-2);
  transition: border-color 180ms ease, color 180ms ease, transform 180ms ease;
}

.tag:hover {
  color: var(--fab-text-0);
  border-color: rgba(33, 112, 228, 0.18);
  transform: translateY(-1px);
}

.site-footer {
  border-top: 1px solid rgba(114, 119, 133, 0.12);
  padding: 2rem;
  color: var(--fab-text-2);
  font-size: 0.8rem;
}

.site-footer .section-container,
.footer-bottom {
  max-width: 1240px;
  margin: 0 auto;
}

.site-header--blog .nav-actions {
  margin-left: auto;
}

@media (max-width: 900px) {
  .site-nav {
    padding: 0.95rem 1rem;
  }

  .article-main {
    padding: 2.5rem 1rem 3.5rem;
  }

  .article-content {
    padding: 1.2rem;
    border-radius: 22px;
  }

  .nav-links {
    gap: 0.75rem;
  }

  .site-header--blog .nav-actions {
    width: 100%;
    justify-content: flex-end;
  }

  .nav-links a:not(:first-child):not(.active) {
    display: none;
  }
}

@media (max-width: 560px) {
  .article-content h1 {
    font-size: 2.05rem;
  }

  .article-content h2 {
    font-size: 1.5rem;
  }

  .article-meta {
    gap: 0.5rem 0.8rem;
  }
}