/* ==========================================================================
   BLOG ARCHITECTURE
   Modern, variable-driven, zero-!important theme system.
   ========================================================================== */

:root {
  --blog-bg: #000000;
  --blog-surface: #06080F;           /* elevated surfaces (cards, panels) */
  --blog-surface-hover: #0F1219;     /* surface hover state */
  --blog-border: rgba(255, 255, 255, 0.08);
  --blog-border-hover: rgba(255, 255, 255, 0.16);
  --blog-gold: #F59E0B;
  --blog-gold-glow: rgba(245, 158, 11, 0.15);
  --blog-accent-secondary: #3B82F6;  /* blue, for interactive elements */
  --blog-text-primary: #F8FAFC;
  --blog-text-secondary: #94A3B8;
  --blog-text-tertiary: #64748B;
  --blog-code-bg: #03060C;
  --blog-font-family: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --blog-font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;
}

/* --------------------------------------------------------------------------
   THEME OVERRIDES (Reader View Only)
   -------------------------------------------------------------------------- */

/* Theme: Obsidian */
body.mode-obsidian {
  --blog-bg: #06080F;
  --blog-surface: #0a0d16;
  --blog-surface-hover: #121623;
  --blog-border: rgba(255, 255, 255, 0.06);
  --blog-border-hover: rgba(255, 255, 255, 0.12);
  --blog-gold-glow: rgba(245, 158, 11, 0.1);
}

/* Theme: Sepia */
body.mode-sepia {
  --blog-bg: #F4ECE1;
  --blog-surface: #EAE0D0;
  --blog-surface-hover: #DFD3C1;
  --blog-border: #D6C5AF;
  --blog-border-hover: #C4B099;
  --blog-gold: #B45309;
  --blog-gold-glow: rgba(180, 83, 9, 0.25);
  --blog-accent-secondary: #92400E;
  --blog-text-primary: #2C2218;
  --blog-text-secondary: #5A4736;
  --blog-text-tertiary: #7A6652;
  --blog-code-bg: #251B14;
  --blog-font-family: 'Plus Jakarta Sans', Georgia, serif;
}
body.mode-sepia .blog-cosmic-canvas { 
  opacity: 0; 
}
body.mode-sepia .reader-toolbar {
  background: rgba(244, 236, 225, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--blog-border);
}
body.mode-sepia footer, 
body.mode-sepia .footer {
  background: var(--blog-bg);
  border-top: 1px solid var(--blog-border);
}

/* Theme: Terminal */
body.mode-terminal {
  --blog-bg: #020A05;
  --blog-surface: rgba(2, 15, 8, 0.9);
  --blog-surface-hover: rgba(4, 25, 14, 0.9);
  --blog-border: rgba(16, 185, 129, 0.3);
  --blog-border-hover: rgba(16, 185, 129, 0.45);
  --blog-gold: #10B981;
  --blog-gold-glow: rgba(16, 185, 129, 0.3);
  --blog-accent-secondary: #059669;
  --blog-text-primary: #6EE7B7;
  --blog-text-secondary: #34D399;
  --blog-text-tertiary: #059669;
  --blog-code-bg: #010803;
  --blog-font-family: 'SFMono-Regular', Consolas, 'Courier New', monospace;
  --blog-font-mono: 'SFMono-Regular', Consolas, 'Courier New', monospace;
}
body.mode-terminal .blog-cosmic-canvas {
  filter: hue-rotate(120deg) brightness(0.8) contrast(1.2);
  opacity: 0.2;
}
body.mode-terminal .article-reader-container h1 {
  text-shadow: 0 0 5px rgba(16, 185, 129, 0.5);
}

/* --------------------------------------------------------------------------
   GLOBAL / BASE
   -------------------------------------------------------------------------- */
body.blog-page {
  background-color: var(--blog-bg);
  color: var(--blog-text-primary);
  font-family: var(--blog-font-family);
  margin: 0;
  padding: 0;
  line-height: 1.75;
  transition: background-color 0.4s ease, color 0.4s ease;
}

.blog-bg-ambient {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(circle at 50% 0%, var(--blog-gold-glow), transparent 60%);
  pointer-events: none;
  z-index: -2;
}

.blog-cosmic-canvas {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  z-index: -1;
  opacity: 0.4;
  pointer-events: none;
  transition: opacity 0.4s ease, filter 0.4s ease;
}

.blog-container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 1.5rem;
  width: 100%;
  box-sizing: border-box;
}

/* Animations */
@keyframes goldShimmerSweep {
  0% { background-position: -200% center; }
  100% { background-position: 200% center; }
}
@keyframes dockSlideUp {
  0% { transform: translateY(100px); opacity: 0; }
  100% { transform: translateY(0); opacity: 1; }
}

.gold-shimmer-text {
  background: linear-gradient(
    90deg,
    var(--blog-text-primary) 0%,
    var(--blog-gold) 50%,
    var(--blog-text-primary) 100%
  );
  background-size: 200% auto;
  color: transparent;
  -webkit-background-clip: text;
  background-clip: text;
  animation: goldShimmerSweep 4s linear infinite;
}

/* Typography Base */
h1, h2, h3, h4, h5, h6 {
  color: var(--blog-text-primary);
  margin-top: 0;
}

/* --------------------------------------------------------------------------
   HERO SECTION
   -------------------------------------------------------------------------- */
.blog-hero {
  padding: 6rem 0 4rem;
  text-align: center;
}

.blog-eyebrow {
  display: inline-block;
  padding: 0.35rem 1rem;
  border-radius: 9999px;
  background: var(--blog-surface);
  border: 1px solid var(--blog-border);
  color: var(--blog-text-secondary);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1.5rem;
}

.blog-hero-title {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.blog-hero-lead {
  font-size: 1.1rem;
  color: var(--blog-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* --------------------------------------------------------------------------
   CONTROLS & FILTER TABS
   -------------------------------------------------------------------------- */
.blog-controls-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--blog-border);
}

.blog-filter-tabs {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.tab-filter-btn {
  background: var(--blog-surface);
  border: 1px solid var(--blog-border);
  color: var(--blog-text-secondary);
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.82rem;
  font-family: var(--blog-font-family);
  cursor: pointer;
  transition: all 0.2s ease;
}

.tab-filter-btn:hover {
  background: var(--blog-surface-hover);
  color: var(--blog-text-primary);
}

.tab-filter-btn.active {
  background: var(--blog-gold);
  color: var(--blog-bg);
  border-color: var(--blog-gold);
  font-weight: 600;
}

.blog-search-box {
  position: relative;
  width: 100%;
  max-width: 300px;
}

.blog-search-box input {
  width: 100%;
  background: var(--blog-surface);
  border: 1px solid var(--blog-border);
  color: var(--blog-text-primary);
  padding: 0.6rem 1rem 0.6rem 2.5rem;
  border-radius: 20px;
  font-family: var(--blog-font-family);
  font-size: 0.82rem;
  outline: none;
  transition: border-color 0.2s ease;
}

.blog-search-box input:focus {
  border-color: var(--blog-gold);
}

/* --------------------------------------------------------------------------
   GRID & CARDS
   -------------------------------------------------------------------------- */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 2rem;
  margin-bottom: 4rem;
}

.featured-blog-card {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  background: var(--blog-surface);
  border: 1px solid var(--blog-border);
  border-radius: 16px;
  overflow: hidden;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.featured-blog-card:hover {
  transform: translateY(-4px);
  border-color: var(--blog-border-hover);
}

.featured-image-wrapper {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 300px;
}

.featured-image-wrapper img {
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  object-fit: cover;
}

.featured-content {
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.blog-category-pill {
  display: inline-block;
  background: var(--blog-surface-hover);
  color: var(--blog-gold);
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
  margin-bottom: 1rem;
}

.blog-card {
  background: var(--blog-surface);
  border: 1px solid var(--blog-border);
  border-radius: 12px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.blog-card:hover {
  transform: translateY(-4px);
  border-color: var(--blog-border-hover);
}

.card-image-wrap {
  width: 100%;
  height: 200px;
  overflow: hidden;
}

.card-image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.card-content {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0.5rem 0;
  line-height: 1.4;
  color: var(--blog-text-primary);
}

.card-excerpt {
  font-size: 0.9rem;
  color: var(--blog-text-secondary);
  flex-grow: 1;
  margin-bottom: 1.5rem;
}

.card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--blog-border);
  padding-top: 1rem;
  font-size: 0.82rem;
  color: var(--blog-text-tertiary);
}

/* --------------------------------------------------------------------------
   NEWSLETTER
   -------------------------------------------------------------------------- */
.blog-newsletter-section {
  background: var(--blog-surface);
  border: 1px solid var(--blog-border);
  border-radius: 16px;
  padding: 3rem;
  text-align: center;
  margin-bottom: 4rem;
}

.blog-newsletter-section h3 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.blog-newsletter-section p {
  color: var(--blog-text-secondary);
  margin-bottom: 2rem;
}

.newsletter-form {
  display: flex;
  max-width: 400px;
  margin: 0 auto;
  gap: 0.5rem;
}

.newsletter-form input {
  flex-grow: 1;
  background: var(--blog-bg);
  border: 1px solid var(--blog-border);
  padding: 0.75rem 1rem;
  border-radius: 8px;
  color: var(--blog-text-primary);
  font-family: var(--blog-font-family);
  outline: none;
}

.newsletter-form input:focus {
  border-color: var(--blog-gold);
}

.newsletter-form button {
  background: var(--blog-gold);
  color: var(--blog-bg);
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s ease;
}

.newsletter-form button:hover {
  opacity: 0.9;
}

/* --------------------------------------------------------------------------
   EMPTY STATE
   -------------------------------------------------------------------------- */
.blog-empty-state {
  text-align: center;
  padding: 4rem 0;
  color: var(--blog-text-secondary);
}

/* --------------------------------------------------------------------------
   READER VIEW (ARTICLE LAYOUT)
   -------------------------------------------------------------------------- */
.reading-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--blog-gold), var(--blog-accent-secondary));
  z-index: 1000;
  width: 0%;
}

.reader-toolbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(6, 8, 15, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--blog-border);
  padding: 1rem 0;
}

.reader-toolbar-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.reading-mode-selector {
  display: flex;
  gap: 0.5rem;
}

.reading-mode-btn {
  background: transparent;
  border: 1px solid var(--blog-border);
  color: var(--blog-text-secondary);
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.reading-mode-btn:hover {
  background: var(--blog-surface);
  color: var(--blog-text-primary);
}
.reading-mode-btn.active {
  background: var(--blog-surface-hover);
  border-color: var(--blog-gold);
  color: var(--blog-gold);
}

.article-reader-container {
  padding: 2rem 0 6rem;
}

.reader-layout-grid {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 3rem;
  max-width: 1080px;
  margin: 0 auto;
}

/* Prose Typography */
.article-prose {
  max-width: 740px;
}

.article-prose h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  margin-bottom: 1.5rem;
  line-height: 1.2;
}

.article-prose h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 2.5rem 0 1rem;
}

.article-prose h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 2rem 0 1rem;
}

.article-prose p {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--blog-text-primary);
  margin-bottom: 1.5rem;
}

.article-prose blockquote {
  border-left: 4px solid var(--blog-gold);
  margin: 2rem 0;
  padding: 1rem 1.5rem;
  background: var(--blog-surface);
  border-radius: 0 8px 8px 0;
  color: var(--blog-text-secondary);
  font-style: italic;
}

.article-prose code {
  font-family: var(--blog-font-mono);
  background: var(--blog-code-bg);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  font-size: 0.9em;
  color: var(--blog-accent-secondary);
}

.article-prose pre {
  background: var(--blog-code-bg);
  padding: 1.5rem;
  border-radius: 8px;
  border: 1px solid var(--blog-border);
  overflow-x: auto;
  margin: 2rem 0;
}

.article-prose pre code {
  background: transparent;
  padding: 0;
  color: var(--blog-text-primary);
}

.article-prose ul, 
.article-prose ol {
  margin: 0 0 1.5rem 1.5rem;
  padding: 0;
}

.article-prose li {
  margin-bottom: 0.5rem;
  color: var(--blog-text-primary);
}

.callout-box {
  background: var(--blog-surface-hover);
  border: 1px solid var(--blog-border);
  padding: 1.5rem;
  border-radius: 8px;
  margin: 2rem 0;
}

.reader-takeaways-box {
  background: var(--blog-surface);
  border-left: 4px solid var(--blog-gold);
  padding: 1.5rem;
  border-radius: 0 8px 8px 0;
  margin-bottom: 3rem;
}

.reader-takeaways-box h3 {
  margin-top: 0;
  color: var(--blog-gold);
}

/* Sidebar TOC */
.reader-toc-sidebar {
  position: sticky;
  top: 100px;
  align-self: start;
}

.reader-toc-sidebar h4 {
  font-size: 0.82rem;
  text-transform: uppercase;
  color: var(--blog-text-tertiary);
  margin-bottom: 1rem;
}

.reader-toc-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.reader-toc-item {
  margin-bottom: 0.75rem;
}

.reader-toc-item a {
  color: var(--blog-text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s ease;
}

.reader-toc-item a:hover {
  color: var(--blog-text-primary);
}

.reader-toc-item.active a {
  color: var(--blog-gold);
  font-weight: 600;
}

/* Reader Navigation */
.next-prev-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 4rem;
  border-top: 1px solid var(--blog-border);
  padding-top: 2rem;
}

.nav-card {
  background: var(--blog-surface);
  border: 1px solid var(--blog-border);
  padding: 1.5rem;
  border-radius: 8px;
  text-decoration: none;
  transition: border-color 0.2s ease, transform 0.2s ease;
  display: block;
}

.nav-card:hover {
  border-color: var(--blog-gold);
  transform: translateY(-2px);
}

.nav-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--blog-text-tertiary);
  margin-bottom: 0.5rem;
  display: block;
}

.nav-title {
  color: var(--blog-text-primary);
  font-weight: 700;
  font-size: 1.1rem;
}

/* Floating Dock */
.reader-floating-dock {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--blog-surface-hover);
  border: 1px solid var(--blog-border);
  padding: 0.5rem;
  border-radius: 9999px;
  display: flex;
  gap: 0.5rem;
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
  animation: dockSlideUp 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  z-index: 100;
}

.dock-btn {
  background: transparent;
  border: none;
  color: var(--blog-text-secondary);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
}

.dock-btn:hover {
  background: var(--blog-surface);
  color: var(--blog-gold);
}

/* --------------------------------------------------------------------------
   UTILITIES
   -------------------------------------------------------------------------- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* --------------------------------------------------------------------------
   SEARCH ICON POSITIONING
   -------------------------------------------------------------------------- */
.blog-search-icon {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--blog-text-tertiary);
  pointer-events: none;
}

.search-kbd-hint {
  position: absolute;
  right: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.7rem;
  color: var(--blog-text-tertiary);
  background: var(--blog-surface);
  border: 1px solid var(--blog-border);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-family: var(--blog-font-mono);
}

/* --------------------------------------------------------------------------
   DOCK BUTTONS
   -------------------------------------------------------------------------- */
.dock-clap-btn {
  background: transparent;
  border: 1px solid var(--blog-border);
  color: var(--blog-text-primary);
  padding: 0.35rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.82rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  transition: all 0.2s ease;
}

.dock-clap-btn:hover {
  border-color: var(--blog-gold);
  background: var(--blog-surface);
}

.dock-share-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--blog-border);
  background: transparent;
  color: var(--blog-text-secondary);
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.dock-share-btn:hover {
  border-color: var(--blog-gold);
  color: var(--blog-gold);
  background: var(--blog-surface);
}

/* --------------------------------------------------------------------------
   CODE BLOCK WRAPPER
   -------------------------------------------------------------------------- */
.code-block-wrap {
  position: relative;
  margin: 2rem 0;
}

.code-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--blog-surface);
  border: 1px solid var(--blog-border);
  border-bottom: none;
  padding: 0.5rem 1rem;
  border-radius: 8px 8px 0 0;
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--blog-text-tertiary);
  font-family: var(--blog-font-mono);
}

.copy-code-btn {
  background: transparent;
  border: 1px solid var(--blog-border);
  color: var(--blog-text-tertiary);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  font-size: 0.7rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.copy-code-btn:hover {
  border-color: var(--blog-gold);
  color: var(--blog-gold);
}

.copy-code-btn.copied {
  border-color: #10B981;
  color: #10B981;
}

.code-block-wrap pre {
  margin-top: 0;
  border-radius: 0 0 8px 8px;
}

/* Inline Code */
.inline-code {
  font-family: var(--blog-font-mono);
  background: var(--blog-code-bg);
  padding: 0.15rem 0.35rem;
  border-radius: 4px;
  font-size: 0.88em;
  color: var(--blog-gold);
}

/* --------------------------------------------------------------------------
   ARTICLE LEAD BOX (CTAs)
   -------------------------------------------------------------------------- */
.article-lead-box {
  background: var(--blog-surface);
  border: 1px solid var(--blog-border);
  border-radius: 12px;
  padding: 1.5rem 2rem;
  margin: 2.5rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.article-lead-box.gold-accent {
  border-color: var(--blog-gold);
  background: linear-gradient(135deg, var(--blog-surface) 0%, rgba(245, 158, 11, 0.05) 100%);
}

.article-lead-box h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--blog-text-primary);
  margin: 0 0 0.25rem;
}

.article-lead-box p {
  font-size: 0.88rem;
  color: var(--blog-text-secondary);
  margin: 0;
}

.article-lead-box a {
  display: inline-block;
  background: var(--blog-gold);
  color: var(--blog-bg);
  padding: 0.6rem 1.2rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.82rem;
  text-decoration: none;
  white-space: nowrap;
  transition: opacity 0.2s ease;
}

.article-lead-box a:hover {
  opacity: 0.9;
}

/* Reader Back Button */
.reader-back-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--blog-text-secondary);
  text-decoration: none;
  font-size: 0.88rem;
  margin-bottom: 2rem;
  transition: color 0.2s ease;
  cursor: pointer;
  background: transparent;
  border: none;
  font-family: var(--blog-font-family);
}

.reader-back-btn:hover {
  color: var(--blog-gold);
}

/* Reader Meta Bar */
.reader-meta-bar {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--blog-border);
}

.reader-author-chip {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.reader-author-chip img {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 2px solid var(--blog-border);
  object-fit: cover;
}

.author-info {
  font-size: 0.88rem;
}

.author-info strong {
  display: block;
  color: var(--blog-text-primary);
}

.author-info span {
  color: var(--blog-text-tertiary);
  font-size: 0.82rem;
}

/* Font Size Controls */
.font-size-controls {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.font-size-btn {
  background: transparent;
  border: 1px solid var(--blog-border);
  color: var(--blog-text-secondary);
  width: 28px;
  height: 28px;
  border-radius: 4px;
  font-size: 0.75rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.font-size-btn:hover {
  border-color: var(--blog-gold);
  color: var(--blog-gold);
}

/* --------------------------------------------------------------------------
   FOOTER
   -------------------------------------------------------------------------- */
.blog-footer {
  margin-top: 4rem;
  padding: 3.5rem 0 1.5rem;
  border-top: 1px solid var(--blog-border);
  background: var(--blog-surface);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  margin-bottom: 0.875rem;
}

.footer-logo {
  border-radius: 8px;
}

.footer-brand-name {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--blog-text-primary);
}

.footer-brand-accent {
  color: var(--blog-gold);
}

.footer-desc {
  font-size: 0.88rem;
  color: var(--blog-text-secondary);
  line-height: 1.6;
}

.footer-heading {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--blog-text-primary);
  margin-bottom: 0.875rem;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: var(--blog-text-secondary);
  text-decoration: none;
  font-size: 0.88rem;
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: var(--blog-gold);
}

.footer-contact {
  font-size: 0.88rem;
  color: var(--blog-text-secondary);
  line-height: 1.6;
  margin-bottom: 0.75rem;
}

.footer-whatsapp-link {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  color: #22C55E;
  font-size: 0.88rem;
  font-weight: 700;
  text-decoration: none;
  transition: opacity 0.2s ease;
}

.footer-whatsapp-link:hover {
  opacity: 0.8;
}

.footer-bottom {
  padding-top: 1.5rem;
  border-top: 1px solid var(--blog-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.78rem;
  color: var(--blog-text-tertiary);
}

/* Sepia theme: navbar + footer adjustments */
body.mode-sepia .apple-glass-nav {
  background: rgba(244, 236, 225, 0.9);
  border-color: var(--blog-border);
}
body.mode-sepia .nav-item,
body.mode-sepia .brand-text {
  color: var(--blog-text-primary);
}
body.mode-sepia .blog-footer {
  background: var(--blog-surface);
}
body.mode-sepia .blog-bg-ambient {
  opacity: 0;
}

/* Terminal theme: navbar + footer adjustments */
body.mode-terminal .apple-glass-nav {
  background: rgba(2, 10, 5, 0.9);
  border-color: var(--blog-border);
}
body.mode-terminal .nav-item,
body.mode-terminal .brand-text {
  color: var(--blog-text-primary);
}
body.mode-terminal .blog-footer {
  background: var(--blog-surface);
}

/* --------------------------------------------------------------------------
   RESPONSIVE BREAKPOINTS
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .reader-layout-grid {
    grid-template-columns: 1fr;
  }
  .reader-toc-sidebar {
    display: none;
  }
  .blog-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  }
  .featured-blog-card {
    grid-template-columns: 1.1fr 1fr;
  }
}

@media (max-width: 768px) {
  .blog-hero {
    padding-top: 5rem;
    padding-bottom: 2rem;
  }
  .featured-blog-card {
    grid-template-columns: 1fr;
  }
  .featured-image-wrapper {
    min-height: 200px;
  }
  .featured-content {
    padding: 1.5rem;
  }
  .next-prev-grid {
    grid-template-columns: 1fr;
  }
  .blog-controls-strip {
    flex-direction: column;
    align-items: stretch;
  }
  .blog-search-box {
    max-width: 100%;
  }
  .article-lead-box {
    flex-direction: column;
    align-items: flex-start;
  }
  .reader-floating-dock {
    width: 90%;
    gap: 0.25rem;
    padding: 0.4rem;
  }
  .newsletter-form {
    flex-direction: column;
  }
  .newsletter-form input,
  .newsletter-form button {
    width: 100%;
  }
}