/* ================================================
   RED NEXUS ACADEMY — DARK CYBERSECURITY BLOG
   ================================================ */

/* --- DESIGN TOKENS --- */
:root {
  /* Type Scale */
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Fonts */
  --font-display: 'JetBrains Mono', 'Courier New', monospace;
  --font-body: 'Inter', 'Helvetica Neue', sans-serif;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Content widths */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;
  --content-full: 100%;
}

/* --- DARK THEME (Default for cybersec vibe) --- */
:root {
  --color-bg:             #0a0a0c;
  --color-surface:        #111114;
  --color-surface-2:      #18181c;
  --color-surface-offset: #1e1e24;
  --color-divider:        #2a2a32;
  --color-border:         #333340;
  --color-text:           #e4e4e8;
  --color-text-muted:     #8a8a96;
  --color-text-faint:     #55555f;
  --color-text-inverse:   #0a0a0c;

  /* Primary — Red accent */
  --color-primary:        #dc2626;
  --color-primary-hover:  #ef4444;
  --color-primary-active: #b91c1c;
  --color-primary-glow:   rgba(220, 38, 38, 0.15);
  --color-primary-subtle: rgba(220, 38, 38, 0.08);

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.5);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.6);
}

/* --- LIGHT THEME --- */
[data-theme="light"] {
  --color-bg:             #f5f5f7;
  --color-surface:        #ffffff;
  --color-surface-2:      #fafafa;
  --color-surface-offset: #eeeff2;
  --color-divider:        #d4d4d8;
  --color-border:         #c4c4cc;
  --color-text:           #18181b;
  --color-text-muted:     #71717a;
  --color-text-faint:     #a1a1aa;
  --color-text-inverse:   #f5f5f7;

  --color-primary:        #dc2626;
  --color-primary-hover:  #b91c1c;
  --color-primary-active: #991b1b;
  --color-primary-glow:   rgba(220, 38, 38, 0.1);
  --color-primary-subtle: rgba(220, 38, 38, 0.05);

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.12);
}

/* ================================================
   GLOBAL ELEMENTS
   ================================================ */

.container {
  width: 100%;
  max-width: var(--content-wide);
  margin: 0 auto;
  padding-inline: var(--space-6);
}

/* ================================================
   HEADER
   ================================================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 12, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-divider);
}

[data-theme="light"] .site-header {
  background: rgba(245, 245, 247, 0.85);
}

.header-inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: var(--space-4) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
  flex-shrink: 0;
}

.logo svg { display: inline-block; }

.logo-text {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.08em;
}

.logo-red { color: var(--color-primary); }
.logo-nexus { color: var(--color-text); }

.main-nav ul {
  display: flex;
  gap: var(--space-1);
}

.nav-link {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
}

.nav-link:hover {
  color: var(--color-text);
  background: var(--color-primary-subtle);
}

.nav-link.active {
  color: var(--color-primary);
  background: var(--color-primary-subtle);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.btn-login {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
  border: 1px solid var(--color-border);
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-full);
}

.btn-login:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.mobile-menu-toggle {
  display: none;
  color: var(--color-text);
}

.mobile-nav {
  display: none;
  padding: var(--space-4) var(--space-6) var(--space-6);
  border-top: 1px solid var(--color-divider);
}

.mobile-nav ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.mobile-nav .nav-link {
  display: block;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
}

@media (max-width: 768px) {
  .main-nav { display: none; }
  .header-actions .btn-login { display: none; }
  .mobile-menu-toggle { display: block; }
  .mobile-nav.open {
    display: block;
  }
}

/* ================================================
   HERO
   ================================================ */

.hero {
  padding: clamp(var(--space-12), 8vw, var(--space-24)) 0 clamp(var(--space-8), 4vw, var(--space-16));
  text-align: center;
  position: relative;
  overflow: hidden;
}

/* Subtle grid background */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(220,38,38,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(220,38,38,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  max-width: var(--content-default);
  margin: 0 auto;
  padding-inline: var(--space-6);
  position: relative;
}

.hero-label {
  display: inline-block;
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.hero-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.text-accent { color: var(--color-primary); }

.hero-subtitle {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 560px;
  margin: 0 auto var(--space-8);
  line-height: 1.7;
}

/* Search bar */
.search-bar {
  max-width: 480px;
  margin: 0 auto var(--space-6);
  position: relative;
  display: flex;
  align-items: center;
}

.search-icon {
  position: absolute;
  left: var(--space-4);
  color: var(--color-text-faint);
  pointer-events: none;
  display: inline-block;
}

.search-bar input {
  width: 100%;
  padding: var(--space-3) var(--space-4) var(--space-3) var(--space-12);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  color: var(--color-text);
  outline: none;
}

.search-bar input::placeholder { color: var(--color-text-faint); }

.search-bar input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-glow);
}

.search-kbd {
  position: absolute;
  right: var(--space-4);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  background: var(--color-surface-2);
  border: 1px solid var(--color-divider);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  line-height: 1;
}

/* Category pills */
.category-pills {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2);
}

.pill {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  background: var(--color-surface-2);
  color: var(--color-text-muted);
  border: 1px solid var(--color-divider);
  white-space: nowrap;
}

.pill:hover {
  color: var(--color-text);
  border-color: var(--color-border);
}

.pill.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

/* ================================================
   FEATURED POST
   ================================================ */

.featured-section {
  padding-bottom: clamp(var(--space-8), 4vw, var(--space-16));
}

.featured-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-xl);
  overflow: hidden;
  cursor: pointer;
  transition: border-color var(--transition-interactive), box-shadow var(--transition-interactive);
}

.featured-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary), 0 8px 32px var(--color-primary-glow);
}

.featured-image {
  position: relative;
  min-height: 320px;
  background: var(--color-surface-2);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.featured-image-bg {
  position: absolute;
  inset: 0;
  opacity: 0.2;
}

/* Animated node network in featured image */
.featured-image canvas {
  width: 100%;
  height: 100%;
  position: absolute;
  inset: 0;
}

.featured-badge {
  position: absolute;
  top: var(--space-4);
  left: var(--space-4);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #fff;
  background: var(--color-primary);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  z-index: 2;
}

.featured-content {
  padding: clamp(var(--space-6), 3vw, var(--space-10));
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--space-4);
}

.featured-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.featured-tag {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-primary);
  background: var(--color-primary-subtle);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
}

.featured-date {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.featured-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.25;
}

.featured-excerpt {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
}

.featured-author {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-2);
}

.author-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: var(--color-primary-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-primary);
  flex-shrink: 0;
}

.author-info {
  display: flex;
  flex-direction: column;
}

.author-name {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}

.author-role {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

@media (max-width: 768px) {
  .featured-card {
    grid-template-columns: 1fr;
  }
  .featured-image {
    min-height: 200px;
  }
}

/* ================================================
   BLOG GRID
   ================================================ */

.blog-section {
  padding-bottom: clamp(var(--space-12), 6vw, var(--space-24));
}

.blog-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: var(--space-8);
  align-items: start;
}

@media (max-width: 1024px) {
  .blog-layout {
    grid-template-columns: 1fr;
  }
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-6);
}

@media (max-width: 480px) {
  .blog-grid {
    grid-template-columns: 1fr;
  }
}

/* Blog Card */
.blog-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  transition: border-color var(--transition-interactive),
              transform var(--transition-interactive),
              box-shadow var(--transition-interactive);
}

.blog-card:hover {
  border-color: var(--color-border);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.card-image {
  height: 180px;
  background: var(--color-surface-2);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-image-icon {
  opacity: 0.12;
}

.card-category-badge {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-primary);
  background: rgba(10, 10, 12, 0.8);
  backdrop-filter: blur(8px);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
}

[data-theme="light"] .card-category-badge {
  background: rgba(255, 255, 255, 0.85);
}

.card-content {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.card-tags {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.card-tag {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  font-family: var(--font-display);
  font-weight: 500;
}

.card-tag::before { content: '#'; color: var(--color-primary); }

.card-title {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.35;
}

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

.card-excerpt {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-divider);
  margin-top: auto;
}

.card-author {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.card-author-avatar {
  width: 24px;
  height: 24px;
  border-radius: var(--radius-full);
  background: var(--color-primary-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 10px;
  font-weight: 700;
  color: var(--color-primary);
  flex-shrink: 0;
}

.card-author-name {
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-text-muted);
}

.card-date {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

/* ================================================
   SIDEBAR
   ================================================ */

.sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  position: sticky;
  top: calc(var(--space-16) + var(--space-8));
}

@media (max-width: 1024px) {
  .sidebar {
    position: static;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  }
}

.sidebar-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
}

.sidebar-title {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-4);
  letter-spacing: 0.02em;
}

/* Category list */
.category-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--color-divider);
  cursor: pointer;
}

.category-list li:last-child { border-bottom: none; }

.category-list li:hover .cat-name { color: var(--color-primary); }

.cat-name {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  transition: color var(--transition-interactive);
}

.cat-count {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-faint);
  background: var(--color-surface-2);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  min-width: 28px;
  text-align: center;
}

/* Trending tags */
.trending-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.trend-tag {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-text-muted);
  background: var(--color-surface-2);
  border: 1px solid var(--color-divider);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-interactive);
}

.trend-tag:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: var(--color-primary-subtle);
}

/* Subscribe */
.subscribe-card {
  background: linear-gradient(135deg, var(--color-surface), var(--color-surface-offset));
  border-color: var(--color-primary-glow);
}

.subscribe-text {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
  line-height: 1.6;
}

.subscribe-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.subscribe-input {
  padding: var(--space-3) var(--space-4);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--color-text);
  outline: none;
}

.subscribe-input::placeholder { color: var(--color-text-faint); }

.subscribe-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-glow);
}

.btn-subscribe {
  padding: var(--space-3) var(--space-4);
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 600;
}

.btn-subscribe:hover {
  background: var(--color-primary-hover);
}

/* ================================================
   EMPTY STATE
   ================================================ */

.empty-state {
  text-align: center;
  padding: var(--space-16) var(--space-6);
  color: var(--color-text-muted);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

.empty-state[hidden] {
  display: none;
}

.empty-state svg { display: inline-block; }

/* ================================================
   CTA SECTION
   ================================================ */

.cta-section {
  padding: clamp(var(--space-12), 6vw, var(--space-24)) 0;
}

.cta-inner {
  text-align: center;
  background: linear-gradient(135deg, var(--color-surface), var(--color-surface-offset));
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-xl);
  padding: clamp(var(--space-10), 5vw, var(--space-16));
  position: relative;
  overflow: hidden;
}

.cta-inner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, var(--color-primary-glow), transparent 60%);
  pointer-events: none;
}

.cta-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-3);
  position: relative;
}

.cta-text {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
  position: relative;
}

.btn-cta {
  display: inline-block;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  color: #fff;
  background: var(--color-primary);
  padding: var(--space-3) var(--space-8);
  border-radius: var(--radius-full);
  text-decoration: none;
  position: relative;
}

.btn-cta:hover {
  background: var(--color-primary-hover);
  box-shadow: 0 4px 20px var(--color-primary-glow);
}

/* ================================================
   FOOTER
   ================================================ */

.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
  padding-top: clamp(var(--space-10), 5vw, var(--space-16));
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-8);
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
  }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 480px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

.footer-brand { max-width: 320px; }

.footer-brand .logo { margin-bottom: var(--space-4); }

.footer-desc {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-5);
}

.social-links {
  display: flex;
  gap: var(--space-3);
}

.social-links a {
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-divider);
}

.social-links a svg { display: inline-block; }

.social-links a:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: var(--color-primary-subtle);
}

.footer-heading {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-col a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
}

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

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-6) 0;
  margin-top: var(--space-8);
  border-top: 1px solid var(--color-divider);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  flex-wrap: wrap;
  gap: var(--space-4);
}

.pplx-link {
  color: var(--color-text-faint);
  text-decoration: none;
  font-size: var(--text-xs);
}

.pplx-link:hover { color: var(--color-text-muted); }

/* ================================================
   ANIMATIONS
   ================================================ */

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

.blog-card {
  animation: fadeUp 0.4s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.blog-card:nth-child(1) { animation-delay: 0.05s; }
.blog-card:nth-child(2) { animation-delay: 0.1s; }
.blog-card:nth-child(3) { animation-delay: 0.15s; }
.blog-card:nth-child(4) { animation-delay: 0.2s; }
.blog-card:nth-child(5) { animation-delay: 0.25s; }
.blog-card:nth-child(6) { animation-delay: 0.3s; }

/* ================================================
   CARD IMAGE PATTERNS (unique per category)
   ================================================ */

.card-pattern {
  position: absolute;
  inset: 0;
  opacity: 0.06;
}