/**
 * blog.css
 * Main stylesheet for static blog pages with inline theme variables
 */

/* ============================================
   Font Face Declarations
   ============================================ */

@font-face {
  font-family: 'OpenSans';
  src: url('/fonts/OpenSans/OpenSans-Regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'OpenSans';
  src: url('/fonts/OpenSans/OpenSans-Medium.ttf') format('truetype');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'OpenSans';
  src: url('/fonts/OpenSans/OpenSans-SemiBold.ttf') format('truetype');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'OpenSans';
  src: url('/fonts/OpenSans/OpenSans-Bold.ttf') format('truetype');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Zepto';
  src: url('/fonts/Zepto/Zepto-Regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'ArchivoBlack';
  src: url('/fonts/ArchivoBlack/ArchivoBlack-Regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

/* ============================================
   CSS Variables (Inlined Theme)
   ============================================ */

:root {
  /* Colors - Dark Monochrome Grayscale Theme */
  --color-primary: hsl(0, 0%, 60%);
  --color-primary-rgb: 153, 153, 153;
  --color-secondary: hsl(0, 0%, 70%);
  --color-success: #A0A0A0;
  --color-warning: #B0B0B0;
  --color-error: #909090;

  --color-surface: #2A2A2A;
  --color-surface-dark: #1A1A1A;
  --color-surface-variant: #3A3A3A;
  --color-secondary-container: rgba(150, 150, 150, 0.1);
  --color-error-container: rgba(100, 100, 100, 0.1);

  --color-text-primary: #FFFFFF;
  --color-text-secondary: #CCCCCC;
  --color-text-inverted: #111111;
  --color-text-disabled: #A0A0A0;

  --color-background: #1A1A1A;
  --color-background-dark: #000000;

  --color-border: rgba(150, 150, 150, 0.3);
  --color-border-dark: hsl(0, 0%, 45%);
  --color-outline: hsl(0, 0%, 50%);

  --color-border-primary-10: rgba(var(--color-primary-rgb), 0.1);
  --color-border-primary-15: rgba(var(--color-primary-rgb), 0.15);
  --color-border-primary-20: rgba(var(--color-primary-rgb), 0.2);

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-xxl: 48px;

  /* Typography */
  --font-body: 'OpenSans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-heading: 'Zepto', Georgia, serif;
  --font-brand: 'ArchivoBlack', Impact, sans-serif;

  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-md: 15px;
  --font-size-lg: 18px;
  --font-size-xl: 20px;
  --font-size-xxl: 28px;

  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Border Radius */
  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-xxl: 24px;
  --radius-round: 9999px;

  /* Shadows - optimized for dark backgrounds */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.6);
  --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.7);
  --shadow-accent: 0 4px 12px rgba(100, 100, 100, 0.3);

  /* Animation */
  --animation-fast: 150ms;
  --animation-normal: 300ms;
  --animation-slow: 500ms;

  /* Z-index */
  --z-base: 1;
  --z-content: 10;
  --z-navigation: 100;
  --z-modal: 1000;
  --z-tooltip: 2000;
}

/* ============================================
   Background Shapes Effect
   ============================================ */

.blog-background {
  position: fixed;
  inset: 0;
  z-index: -1;
  background: linear-gradient(
    180deg,
    var(--color-background-dark) 0%,
    var(--color-surface-dark) 70%,
    var(--color-background) 100%
  );
}

.blog-background::before {
  content: '';
  position: fixed;
  top: -150px;
  right: -150px;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(var(--color-primary-rgb), 0.35) 0%,
    rgba(var(--color-primary-rgb), 0.20) 35%,
    rgba(var(--color-primary-rgb), 0.06) 70%,
    transparent 100%
  );
  animation: pulse-soft 8s cubic-bezier(0.4, 0, 0.6, 1) infinite;
  pointer-events: none;
}

.blog-background::after {
  content: '';
  position: fixed;
  bottom: -200px;
  right: -200px;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(var(--color-primary-rgb), 0.32) 0%,
    rgba(var(--color-primary-rgb), 0.18) 40%,
    rgba(var(--color-primary-rgb), 0.06) 70%,
    transparent 100%
  );
  animation: pulse-soft 8s cubic-bezier(0.4, 0, 0.6, 1) infinite 2s;
  pointer-events: none;
}

.blog-shape-left {
  position: fixed;
  left: -150px;
  top: 50%;
  transform: translateY(-50%);
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(var(--color-primary-rgb), 0.40) 0%,
    rgba(var(--color-primary-rgb), 0.22) 30%,
    rgba(var(--color-primary-rgb), 0.08) 60%,
    transparent 100%
  );
  animation: pulse-soft 8s cubic-bezier(0.4, 0, 0.6, 1) infinite 4s;
  pointer-events: none;
  z-index: -1;
}

@keyframes pulse-soft {
  0%, 100% { opacity: 0.9; transform: translateY(-50%) scale(1); }
  50% { opacity: 0.7; transform: translateY(-50%) scale(1.05); }
}

/* ============================================
   Global Reset
   ============================================ */

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
}

body {
  margin: 0;
  padding: 0;
  background: var(--color-background);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Global link reset - override browser defaults */
a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--animation-fast) ease;
}

a:hover {
  color: var(--color-text-primary);
}

a:visited {
  color: var(--color-text-secondary);
}

/* SVG icons inherit color */
svg {
  fill: currentColor;
}

/* ============================================
   Header & Navigation
   ============================================ */

.site-header {
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-lg) 0;
  background: transparent;
  position: sticky;
  top: 0;
  z-index: var(--z-navigation);
}

.site-nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-xl);
}

.logo-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--color-text-primary);
  text-decoration: none;
  transition: opacity var(--animation-fast) ease;
}

.logo-link:hover {
  opacity: 0.8;
}

.logo-link .logo {
  height: 32px;
  width: auto;
}

.logo-link .site-name {
  font-family: var(--font-brand);
  font-size: var(--font-size-lg);
  letter-spacing: 0.02em;
  color: var(--color-text-primary);
  text-transform: uppercase;
}

/* ============================================
   Main Content
   ============================================ */

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-xxl) var(--spacing-lg);
}

.blog-post {
  max-width: 780px;
  margin: 0 auto;
}

/* ============================================
   Post Header
   ============================================ */

.post-header {
  max-width: 680px;
  margin: 0 auto var(--spacing-xxl);
  text-align: center;
}

article .post-header h1,
.post-header h1 {
  font-family: var(--font-heading);
  font-size: 3rem;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.03em;
  color: var(--color-text-primary);
  text-transform: uppercase;
}

.post-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

/* ============================================
   Featured Image
   ============================================ */

.featured-image {
  max-width: 900px;
  margin: 0 auto var(--spacing-xxl);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.featured-image img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  max-height: 500px;
}

/* ============================================
   Post Content Typography
   ============================================ */

.post-content {
  font-size: 18px;
  line-height: 1.75;
  color: var(--color-text-primary);
}

.post-content h1,
.post-content h2,
.post-content h3,
.post-content h4,
.post-content h5,
.post-content h6 {
  font-family: var(--font-heading);
  font-weight: var(--font-weight-bold);
  line-height: 1.3;
  color: var(--color-text-primary);
  margin-top: 2.5em;
  margin-bottom: 0.75em;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}

.post-content h2 {
  font-size: 2rem;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 0.25em;
}

.post-content h3 {
  font-size: 1.5rem;
}

.post-content h4 {
  font-size: 1.25rem;
}

.post-content p {
  margin-bottom: 1.5em;
}

.post-content a {
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
  transition: all var(--animation-fast) ease;
}

.post-content a:hover {
  color: var(--color-text-primary);
  text-decoration-thickness: 2px;
}

.post-content ul,
.post-content ol {
  margin-bottom: 1.5em;
  padding-left: 1.75em;
}

.post-content li {
  margin-bottom: 0.5em;
  line-height: 1.6;
}

.post-content blockquote {
  margin: 2em 0;
  padding: var(--spacing-lg) var(--spacing-xl);
  border-left: 4px solid var(--color-primary);
  background: var(--color-surface-variant);
  border-radius: var(--radius-sm);
  font-style: italic;
  color: var(--color-text-secondary);
}

.post-content hr {
  border: none;
  border-top: 2px solid var(--color-border);
  margin: 3em 0;
  opacity: 0.5;
}

.post-content img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 2em auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

/* ============================================
   Code Styling
   ============================================ */

.post-content code {
  font-family: 'Monaco', 'Courier New', monospace;
  font-size: 0.9em;
  padding: 0.2em 0.4em;
  background: var(--color-surface-variant);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xs);
  color: var(--color-text-primary);
}

.post-content pre {
  margin: 2em 0;
  border-radius: var(--radius-md);
  background: #282c34;
  overflow-x: auto;
  box-shadow: var(--shadow-md);
}

.post-content pre code {
  display: block;
  padding: var(--spacing-lg);
  font-size: 14px;
  line-height: 1.6;
  background: none;
  border: none;
  color: #abb2bf;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

/* ============================================
   Tables
   ============================================ */

.post-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 2em 0;
  font-size: 0.9em;
}

.post-content th,
.post-content td {
  padding: 0.75em 1em;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.post-content th {
  background: var(--color-surface-variant);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
}

.post-content tr:hover {
  background: var(--color-surface-variant);
}

/* ============================================
   Breadcrumbs
   ============================================ */

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-disabled);
  margin-bottom: var(--spacing-lg);
}

.breadcrumb a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--animation-fast) ease;
}

.breadcrumb a:hover {
  color: var(--color-text-primary);
}

.breadcrumb__separator {
  color: var(--color-text-disabled);
}

.breadcrumb__current {
  color: var(--color-text-disabled);
  max-width: 300px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ============================================
   Page Header (shared)
   ============================================ */

.page-header {
  margin-bottom: var(--spacing-xxl);
}

.page-header h1 {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: var(--font-weight-bold);
  letter-spacing: -0.03em;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-sm);
}

.page-header .subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  line-height: 1.6;
  max-width: 600px;
}

/* ============================================
   Blog List
   ============================================ */

.blog-list {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-xxl) var(--spacing-lg);
}

.posts {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--spacing-xl);
  margin-top: var(--spacing-xxl);
}

/* Card Link Wrappers - Make entire cards clickable */
.blog-card-link,
.related-card-link {
  display: block;
  text-decoration: none;
  color: inherit;
}

.blog-card-link:hover,
.related-card-link:hover {
  text-decoration: none;
}

.blog-card,
.content-card {
  display: flex;
  flex-direction: column;
  background: linear-gradient(
    135deg,
    rgba(var(--color-primary-rgb), 0.08) 0%,
    rgba(var(--color-primary-rgb), 0.04) 50%,
    rgba(var(--color-primary-rgb), 0.02) 100%
  );
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  border-top-right-radius: var(--radius-xs);
  overflow: hidden;
  transition: all 0.3s ease;
}

.blog-card-link:hover .blog-card,
.related-card-link:hover .related-card,
.blog-card:hover,
.content-card:hover {
  border-color: rgba(var(--color-primary-rgb), 0.5);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.blog-card-link:hover .card-image img,
.related-card-link:hover .card-image img,
.blog-card:hover .card-image img,
.content-card:hover .card-image img {
  transform: scale(1.05);
}

.blog-card h2,
.content-card h2 {
  font-family: var(--font-heading);
  font-size: var(--font-size-xl);
  margin: 0 0 var(--spacing-sm);
  line-height: 1.3;
  color: var(--color-text-primary);
}

.blog-card-link:hover .card-title,
.related-card-link:hover .card-title {
  color: var(--color-primary);
}

.blog-card p,
.content-card p {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
  line-height: 1.6;
  flex-grow: 1;
}

.blog-card .card-content,
.content-card .card-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: var(--spacing-md);
}

.meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-disabled);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border);
}

/* ============================================
   Footer
   ============================================ */

footer {
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-xxl) var(--spacing-lg);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  margin-top: var(--spacing-xxl);
  background: transparent;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
}

.related-posts {
  margin-bottom: var(--spacing-xxl);
  padding-bottom: var(--spacing-xxl);
  border-bottom: 1px solid var(--color-border);
}

.related-posts h3 {
  font-family: var(--font-heading);
  font-size: var(--font-size-xl);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-lg);
  letter-spacing: -0.02em;
}

.related-posts-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-md);
}

.related-post {
  padding: var(--spacing-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--animation-fast) ease;
}

.related-post:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.related-post a {
  color: var(--color-text-primary);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  display: block;
}

.footer-nav {
  display: flex;
  justify-content: center;
  gap: var(--spacing-xxl);
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
}

.footer-nav__section h4 {
  font-family: var(--font-heading);
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-md);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-nav__links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-nav__links a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--animation-fast) ease;
}

.footer-nav__links a:hover {
  color: var(--color-text-primary);
}

.footer-social {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
}

.footer-social a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--animation-fast) ease;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
}

.footer-social a svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.footer-social a:hover {
  color: var(--color-text-primary);
}

.footer-meta {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
  color: var(--color-text-disabled);
}

/* ============================================
   Responsive
   ============================================ */

@media (max-width: 768px) {
  .site-nav {
    gap: var(--spacing-md);
  }

  .logo-link .site-name {
    font-size: var(--font-size-lg);
  }

  .logo-link .logo {
    height: 24px;
  }

  .chat-cta {
    font-size: var(--font-size-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
  }

  .post-header h1,
  .page-header h1 {
    font-size: 2rem;
  }

  .posts {
    grid-template-columns: 1fr;
  }

  .post-content {
    font-size: 17px;
  }

  .post-content pre {
    margin-left: calc(var(--spacing-md) * -1);
    margin-right: calc(var(--spacing-md) * -1);
    border-radius: 0;
  }

  .post-content pre code {
    font-size: 13px;
  }

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

/* ============================================
   Enhanced References Section
   ============================================ */

.references {
  margin: var(--spacing-xxl) 0;
  padding: var(--spacing-xl);
  background: rgba(var(--color-primary-rgb), 0.05);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  border-top-right-radius: var(--radius-xs);
}

.references h2 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.references-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-md);
}

.reference-card {
  padding: var(--spacing-md);
  background: linear-gradient(
    135deg,
    rgba(var(--color-primary-rgb), 0.08) 0%,
    rgba(var(--color-primary-rgb), 0.04) 50%,
    rgba(var(--color-primary-rgb), 0.02) 100%
  );
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  border-top-right-radius: var(--radius-xs);
  transition: all 0.2s ease;
}

.reference-card:hover {
  border-color: rgba(var(--color-primary-rgb), 0.5);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.reference-card__number {
  font-family: var(--font-brand);
  font-size: 0.75rem;
  color: var(--color-text-disabled);
  margin-bottom: var(--spacing-xs);
  display: block;
}

.reference-card__title {
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  color: var(--color-text-primary);
  text-decoration: none;
  display: block;
  line-height: 1.4;
  margin-bottom: var(--spacing-xs);
}

.reference-card__title:hover {
  color: var(--color-primary);
}

.reference-card__domain {
  font-size: 0.75rem;
  color: var(--color-text-disabled);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

/* ============================================
   Continue Reading Grid with Images
   ============================================ */

.related-articles {
  margin-top: var(--spacing-xxl);
}

.related-articles h3 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-xl);
  letter-spacing: -0.02em;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

@media (max-width: 1024px) {
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .related-grid {
    grid-template-columns: 1fr;
  }
}

.related-card {
  display: flex;
  flex-direction: column;
  background: linear-gradient(
    135deg,
    rgba(var(--color-primary-rgb), 0.08) 0%,
    rgba(var(--color-primary-rgb), 0.04) 50%,
    rgba(var(--color-primary-rgb), 0.02) 100%
  );
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  border-top-right-radius: var(--radius-xs);
  overflow: hidden;
  transition: all 0.3s ease;
}

.related-card:hover {
  border-color: rgba(var(--color-primary-rgb), 0.5);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card-image {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--color-surface-dark);
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.related-card:hover .card-image img {
  transform: scale(1.05);
}

.card-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(0, 0, 0, 0.5) 0%,
    rgba(0, 0, 0, 0.2) 40%,
    transparent 100%
  );
  pointer-events: none;
}

.card-image--placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(
    135deg,
    var(--color-surface-dark) 0%,
    var(--color-background-dark) 100%
  );
}

.card-image--placeholder svg {
  width: 48px;
  height: 48px;
  color: var(--color-text-disabled);
  opacity: 0.3;
}

.card-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: var(--spacing-md);
}

.card-content h4 {
  margin: 0 0 var(--spacing-sm);
}

.card-title {
  font-family: var(--font-heading);
  font-size: 1.0625rem;
  line-height: 1.35;
  color: var(--color-text-primary);
  text-decoration: none;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color 0.2s ease;
}

.card-title:hover {
  color: var(--color-primary);
}

.card-excerpt {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  font-size: 0.75rem;
  color: var(--color-text-disabled);
  padding-top: var(--spacing-sm);
  border-top: 1px solid var(--color-border);
}

/* ============================================
   Agentic Banner
   ============================================ */

.agentic-banner {
  margin: var(--spacing-xxl) 0;
  padding: var(--spacing-xl);
  background: linear-gradient(
    135deg,
    rgba(var(--color-primary-rgb), 0.1) 0%,
    rgba(var(--color-primary-rgb), 0.05) 100%
  );
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  border-top-right-radius: var(--radius-xs);
}

.banner-content {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.banner-icon {
  font-size: 2.5rem;
}

.banner-text {
  flex: 1;
  min-width: 200px;
}

.banner-text h3 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-xs);
}

.banner-text p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0;
}

.banner-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  background: var(--color-primary);
  color: var(--color-text-inverted);
  border-radius: var(--radius-md);
  text-decoration: none;
  font-weight: var(--font-weight-semibold);
  transition: all var(--animation-fast) ease;
}

.banner-cta:hover {
  background: var(--color-secondary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ============================================
   Chat CTA (Header)
   ============================================ */

.chat-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: 10px 20px;
  background: transparent;
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-round);
  text-decoration: none;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.01em;
  transition: all var(--animation-normal) ease;
  position: relative;
  overflow: hidden;
}

.chat-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(var(--color-primary-rgb), 0.1) 0%,
    rgba(var(--color-primary-rgb), 0.05) 100%
  );
  opacity: 0;
  transition: opacity var(--animation-normal) ease;
}

.chat-cta:hover {
  color: var(--color-text-primary);
  border-color: rgba(var(--color-primary-rgb), 0.5);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.chat-cta:hover::before {
  opacity: 1;
}

.chat-cta .chat-icon {
  width: 16px;
  height: 16px;
  transition: transform var(--animation-normal) ease;
}

.chat-cta:hover .chat-icon {
  transform: scale(1.1);
}

.chat-cta:active {
  transform: translateY(0);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

/* ============================================
   Social Content Section
   ============================================ */

.social-content {
  margin: var(--spacing-xxl) 0;
  padding: var(--spacing-lg);
  background: rgba(var(--color-primary-rgb), 0.03);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.social-content h2 {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  margin-bottom: var(--spacing-sm);
}

.social-content p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
}

.social-content ul {
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.social-content li a {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-md);
  background: var(--color-surface-variant);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-round);
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: var(--font-size-sm);
  transition: all var(--animation-fast) ease;
}

.social-content li a:hover {
  border-color: var(--color-primary);
  color: var(--color-text-primary);
}