/* ============================================
   Zig Brasil - Modern CSS (Mobile-First)
   Dark/Light Mode Support
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
  /* Zig brand colors */
  --zig-orange: #F7A41D;
  --zig-orange-dark: #E08E0B;
  --zig-orange-light: #FFD080;

  /* Light mode (default) */
  --bg-primary: #FFFFFF;
  --bg-secondary: #F6F8FA;
  --bg-card: #FFFFFF;
  --bg-card-hover: #F0F2F5;
  --text-primary: #1F2328;
  --text-secondary: #59636E;
  --text-muted: #8B949E;
  --border-color: #D0D7DE;
  --header-bg: rgba(246, 248, 250, 0.95);
  --code-bg: #F6F8FA;
  --hero-glow: rgba(247, 164, 29, 0.08);
  --badge-bg: rgba(247, 164, 29, 0.1);
  --badge-border: rgba(247, 164, 29, 0.3);
  --badge-text: #B47800;
  --link-hover: var(--zig-orange-dark);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-card: 0 1px 4px rgba(0,0,0,0.08);

  /* Typography */
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", "Cascadia Code", Consolas, monospace;
  --font-size-base: 1rem;
  --line-height: 1.7;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  /* Layout */
  --container-max: 1200px;
  --container-padding: 1.25rem;
  --border-radius: 8px;
  --border-radius-lg: 12px;

  /* Transitions */
  --transition: 0.2s ease;
  --transition-theme: 0.3s ease;
}

/* Dark mode via .dark class */
html.dark {
  --bg-primary: #0D1117;
  --bg-secondary: #161B22;
  --bg-card: #1C2128;
  --bg-card-hover: #242A33;
  --text-primary: #E6EDF3;
  --text-secondary: #8B949E;
  --text-muted: #6E7681;
  --border-color: #30363D;
  --header-bg: rgba(22, 27, 34, 0.95);
  --code-bg: #161B22;
  --hero-glow: rgba(247, 164, 29, 0.06);
  --badge-bg: rgba(247, 164, 29, 0.1);
  --badge-border: rgba(247, 164, 29, 0.25);
  --badge-text: var(--zig-orange-light);
  --link-hover: var(--zig-orange-light);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-card: 0 1px 4px rgba(0,0,0,0.4);
}

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: var(--line-height);
  color: var(--text-primary);
  background: var(--bg-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background var(--transition-theme), color var(--transition-theme);
}

main {
  flex: 1;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--zig-orange);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover, a:focus {
  color: var(--link-hover);
}

/* --- Skip Link (Accessibility) --- */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--zig-orange);
  color: var(--bg-primary);
  padding: var(--space-sm) var(--space-md);
  z-index: 1000;
  font-weight: 600;
  transition: top var(--transition);
}

.skip-link:focus {
  top: 0;
  color: var(--bg-primary);
}

/* --- Container --- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  line-height: 1.3;
  font-weight: 700;
  color: var(--text-primary);
}

h1 { font-size: clamp(1.75rem, 4vw, 2.75rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); margin-bottom: var(--space-lg); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.5rem); margin-bottom: var(--space-md); }

p { margin-bottom: var(--space-md); }

code, pre {
  font-family: var(--font-mono);
}

code {
  background: var(--code-bg);
  padding: 0.15em 0.4em;
  border-radius: 4px;
  font-size: 0.9em;
}

pre {
  background: var(--code-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--space-lg);
  overflow-x: auto;
  margin-bottom: var(--space-lg);
}

pre code {
  background: none;
  padding: 0;
  font-size: 0.875rem;
}

/* --- Header --- */
.site-header {
  border-bottom: 1px solid var(--border-color);
  padding: var(--space-md) 0;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
  background: var(--header-bg);
  transition: background var(--transition-theme), border-color var(--transition-theme);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-primary);
  text-decoration: none;
}

.site-logo:hover, .site-logo:focus {
  color: var(--zig-orange);
}

.site-logo svg {
  flex-shrink: 0;
}

/* Header right area (nav + theme toggle) */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

/* Theme toggle button */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: none;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  cursor: pointer;
  color: var(--text-secondary);
  transition: all var(--transition);
  flex-shrink: 0;
  position: relative;
}

.theme-toggle:hover,
.theme-toggle:focus-visible {
  color: var(--zig-orange);
  border-color: var(--zig-orange);
  background: var(--badge-bg);
}

.theme-toggle:focus-visible {
  outline: 2px solid var(--zig-orange);
  outline-offset: 2px;
}

.theme-toggle svg {
  width: 20px;
  height: 20px;
  transition: transform 0.3s ease, opacity 0.2s ease;
}

/* Sun icon (shown in dark mode) */
.theme-toggle .icon-sun {
  display: none;
}

/* Moon icon (shown in light mode) */
.theme-toggle .icon-moon {
  display: block;
}

html.dark .theme-toggle .icon-sun {
  display: block;
}

html.dark .theme-toggle .icon-moon {
  display: none;
}

/* Mobile menu toggle */
.menu-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition);
}

.site-nav {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: var(--space-md);
}

.site-nav.open {
  display: block;
}

.site-nav ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.site-nav a {
  display: block;
  padding: var(--space-sm) var(--space-md);
  color: var(--text-secondary);
  border-radius: var(--border-radius);
  transition: all var(--transition);
}

.site-nav a:hover, .site-nav a:focus, .site-nav a.active {
  color: var(--zig-orange);
  background: var(--bg-card);
}

/* Desktop nav */
@media (min-width: 768px) {
  .menu-toggle { display: none; }

  .site-nav {
    display: block;
    position: static;
    background: none;
    border: none;
    padding: 0;
  }

  .site-nav ul {
    flex-direction: row;
    gap: var(--space-xs);
  }

  .site-nav a {
    padding: var(--space-xs) var(--space-md);
    font-size: 0.9375rem;
  }
}

/* --- Hero Section --- */
.hero {
  padding: var(--space-3xl) 0;
  text-align: center;
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, var(--bg-primary) 100%);
  border-bottom: 1px solid var(--border-color);
  position: relative;
  overflow: hidden;
  transition: background var(--transition-theme), border-color var(--transition-theme);
}

.hero::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(ellipse at center, var(--hero-glow) 0%, transparent 60%);
  pointer-events: none;
}

.hero h1 {
  font-size: clamp(1.75rem, 5vw, 3.25rem);
  margin-bottom: var(--space-lg);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 650px;
  margin: 0 auto var(--space-lg);
  line-height: 1.6;
  position: relative;
}

/* Hero Badges */
.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  justify-content: center;
  margin-bottom: var(--space-xl);
  position: relative;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 0.375rem 0.875rem;
  background: var(--badge-bg);
  border: 1px solid var(--badge-border);
  border-radius: 999px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--badge-text);
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  justify-content: center;
  position: relative;
}

/* Hero Stats */
.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xl);
  justify-content: center;
  margin-top: var(--space-2xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border-color);
  position: relative;
}

.hero-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  min-width: 120px;
}

.hero-stat-number {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--zig-orange);
  line-height: 1;
}

.hero-stat-label {
  font-size: 0.8125rem;
  color: var(--text-muted);
  text-align: center;
}

@media (min-width: 768px) {
  .hero {
    padding: var(--space-3xl) 0 calc(var(--space-3xl) + 1rem);
  }

  .hero-stat-number {
    font-size: 2.25rem;
  }
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  transition: all var(--transition);
  border: 2px solid transparent;
  cursor: pointer;
}

.btn-primary {
  background: var(--zig-orange);
  color: #1F2328;
  border-color: var(--zig-orange);
}

.btn-primary:hover, .btn-primary:focus {
  background: var(--zig-orange-dark);
  border-color: var(--zig-orange-dark);
  color: #1F2328;
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  color: var(--zig-orange);
  border-color: var(--zig-orange);
}

.btn-secondary:hover, .btn-secondary:focus {
  background: var(--badge-bg);
  color: var(--link-hover);
}

.btn-outline {
  background: transparent;
  color: var(--text-secondary);
  border-color: var(--border-color);
}

.btn-outline:hover, .btn-outline:focus {
  color: var(--zig-orange);
  border-color: var(--zig-orange);
}

/* --- Sections --- */
.section {
  padding: var(--space-3xl) 0;
  transition: background var(--transition-theme), border-color var(--transition-theme);
}

.section-intro {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 700px;
  margin-bottom: var(--space-xl);
}

.section h2 {
  position: relative;
}

.section-cta {
  text-align: center;
  margin-top: var(--space-xl);
}

/* Alternating section backgrounds */
.what-is-zig {
  background: var(--bg-secondary);
}

.who-uses-zig {
  background: var(--bg-secondary);
}

.community {
  background: var(--bg-secondary);
}

.cta-final {
  text-align: center;
  background: linear-gradient(135deg, rgba(247, 164, 29, 0.05) 0%, transparent 100%);
  border-top: 1px solid var(--border-color);
}

/* --- Features Grid --- */
.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

@media (min-width: 640px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 960px) {
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition);
  box-shadow: var(--shadow-card);
}

.feature-card:hover {
  border-color: var(--zig-orange);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

.feature-icon {
  font-size: 2rem;
  display: block;
  margin-bottom: var(--space-md);
}

.feature-card h3 {
  color: var(--zig-orange);
  font-size: 1.125rem;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  margin-bottom: 0;
}

/* --- Why Zig Section --- */
.why-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

@media (min-width: 768px) {
  .why-grid {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
}

.comparison h3, .use-cases h3 {
  color: var(--zig-orange);
  font-size: 1.125rem;
}

.check-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.check-list li {
  position: relative;
  padding-left: 1.75rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--zig-orange);
  font-weight: 700;
}

.check-list li strong {
  color: var(--text-primary);
}

.use-case-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.tag {
  display: inline-block;
  padding: var(--space-xs) var(--space-md);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 999px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  transition: all var(--transition);
  text-decoration: none;
}

.tag:hover {
  border-color: var(--zig-orange);
  color: var(--zig-orange);
}

.tag-lg {
  padding: var(--space-sm) var(--space-lg);
  font-size: 1rem;
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.code-example {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-card);
}

.code-example h3 {
  color: var(--text-secondary);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-md);
}

.code-example pre {
  margin-bottom: var(--space-md);
}

.code-caption {
  color: var(--text-muted);
  font-size: 0.875rem;
  font-style: italic;
  margin-bottom: 0;
}

.why-highlight {
  position: sticky;
  top: 5rem;
}

/* --- Notable Users / Social Proof --- */
.notable-users-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

@media (min-width: 640px) {
  .notable-users-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 960px) {
  .notable-users-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.notable-user-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.notable-user-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--zig-orange), var(--zig-orange-light));
  opacity: 0;
  transition: opacity var(--transition);
}

.notable-user-card:hover {
  border-color: var(--zig-orange);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

.notable-user-card:hover::before {
  opacity: 1;
}

.notable-user-card h3 {
  color: var(--zig-orange);
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
}

.notable-user-card p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  margin-bottom: 0;
  line-height: 1.5;
}

/* --- FAQ Section --- */
.faq-section {
  border-top: 1px solid var(--border-color);
}

.faq-list {
  max-width: 800px;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  transition: border-color var(--transition);
  box-shadow: var(--shadow-sm);
}

.faq-item[open] {
  border-color: var(--zig-orange);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space-lg) var(--space-xl);
  cursor: pointer;
  list-style: none;
  user-select: none;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-question h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0;
  flex: 1;
}

.faq-toggle {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--bg-secondary);
  color: var(--zig-orange);
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1;
  transition: all var(--transition);
}

.faq-item[open] .faq-toggle {
  transform: rotate(45deg);
  background: var(--badge-bg);
}

.faq-question:hover .faq-toggle {
  background: var(--badge-bg);
}

.faq-answer {
  padding: 0 var(--space-xl) var(--space-lg);
}

.faq-answer p {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 0;
}

/* --- Posts Grid --- */
.posts-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

@media (min-width: 640px) {
  .posts-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 960px) {
  .posts-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .posts-grid-sm {
    grid-template-columns: repeat(3, 1fr);
  }
}

.post-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all var(--transition);
  box-shadow: var(--shadow-card);
}

.post-card:hover {
  border-color: var(--zig-orange);
  transform: translateY(-2px);
}

.post-card-img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.post-card-body {
  flex: 1;
  padding: var(--space-lg);
}

.post-card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-bottom: var(--space-sm);
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.post-tag {
  background: var(--badge-bg);
  color: var(--zig-orange);
  padding: 0.125rem 0.5rem;
  border-radius: 999px;
  font-size: 0.75rem;
}

.post-card h2, .post-card h3 {
  font-size: 1.125rem;
  margin-bottom: var(--space-sm);
}

.post-card h2 a, .post-card h3 a {
  color: var(--text-primary);
}

.post-card h2 a:hover, .post-card h3 a:hover {
  color: var(--zig-orange);
}

.post-card p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  margin-bottom: 0;
}

.post-card-link {
  display: block;
  padding: var(--space-md) var(--space-lg);
  border-top: 1px solid var(--border-color);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--zig-orange);
}

.post-card-link:hover {
  background: rgba(247, 164, 29, 0.05);
}

.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--space-3xl) var(--space-xl);
  background: var(--bg-card);
  border: 1px dashed var(--border-color);
  border-radius: var(--border-radius-lg);
}

.empty-state p {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
}

/* --- Community Grid --- */
.community-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

@media (min-width: 640px) {
  .community-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 960px) {
  .community-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* --- Popular Content Grid --- */
.popular-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

@media (min-width: 640px) {
  .popular-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 960px) {
  .popular-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.popular-card {
  display: block;
  background: var(--bg-card);
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
  text-align: center;
  text-decoration: none;
  color: inherit;
  transition: all var(--transition);
  box-shadow: var(--shadow-card);
}

.popular-card:hover {
  border-color: var(--zig-orange);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(247, 164, 29, 0.15);
}

.popular-card h3 {
  font-size: 1rem;
  margin: 0.5rem 0;
  color: var(--text-primary);
}

.popular-card p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin: 0;
}

.popular-icon {
  font-size: 2rem;
  display: block;
  margin-bottom: 0.25rem;
}

/* Quick Navigation Grid (bounce reduction) */
.quick-nav {
  background: var(--bg-secondary);
  padding: var(--space-xl) 0;
}

.quick-nav h2 {
  text-align: center;
  margin-bottom: var(--space-lg);
  font-size: 1.25rem;
}

.quick-nav-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-sm);
}

@media (min-width: 768px) {
  .quick-nav-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
  }
}

@media (min-width: 1024px) {
  .quick-nav-grid {
    grid-template-columns: repeat(6, 1fr);
  }
}

.quick-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-md);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  text-decoration: none;
  transition: all var(--transition);
  text-align: center;
}

.quick-nav-item:hover {
  border-color: var(--zig-orange);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(247, 164, 29, 0.15);
}

.quick-nav-icon {
  font-size: 1.5rem;
  margin-bottom: 0.25rem;
}

.quick-nav-text {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.3;
}

.community-card {
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
  text-align: center;
  text-decoration: none;
  transition: all var(--transition);
  box-shadow: var(--shadow-card);
}

.community-card:hover {
  border-color: var(--zig-orange);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

.community-icon {
  font-size: 2.5rem;
  display: block;
  margin-bottom: var(--space-md);
}

.community-card h3 {
  color: var(--text-primary);
  font-size: 1.125rem;
}

.community-card p {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-bottom: 0;
}

/* --- Pagination --- */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
}

.pagination-info {
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* --- Article Page --- */
.article-header {
  padding: var(--space-2xl) 0 var(--space-lg);
  border-bottom: 1px solid var(--border-color);
}

.article-header .container {
  display: block;
  height: auto;
}

.article-header h1 {
  margin-bottom: var(--space-md);
  overflow-wrap: break-word;
  word-break: break-word;
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  line-height: 1.3;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  flex-wrap: wrap;
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-bottom: var(--space-md);
}

.article-tags {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.article-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  padding: var(--space-xl) 0;
}

@media (min-width: 960px) {
  .article-layout {
    grid-template-columns: 240px 1fr;
  }
}

/* Table of Contents */
.toc {
  font-size: 0.875rem;
}

@media (min-width: 960px) {
  .toc {
    position: sticky;
    top: 5rem;
    max-height: calc(100vh - 6rem);
    overflow-y: auto;
  }
}

.toc summary {
  cursor: pointer;
  list-style: none;
}

.toc summary::-webkit-details-marker {
  display: none;
}

.toc h2 {
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: var(--space-md);
}

.toc nav, .toc ul {
  list-style: none;
}

.toc #TableOfContents ul {
  padding-left: 0;
}

.toc #TableOfContents ul ul {
  padding-left: var(--space-md);
}

.toc #TableOfContents li {
  margin-bottom: var(--space-xs);
}

.toc #TableOfContents a {
  display: block;
  padding: var(--space-xs) 0;
  color: var(--text-secondary);
  font-size: 0.8125rem;
  border-left: 2px solid transparent;
  padding-left: var(--space-sm);
}

.toc #TableOfContents a:hover {
  color: var(--zig-orange);
  border-left-color: var(--zig-orange);
}

/* Article Content */
.article-content {
  max-width: 75ch;
}

.article-content h2 {
  margin-top: var(--space-2xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border-color);
}

.article-content h3 {
  margin-top: var(--space-xl);
}

.article-content ul, .article-content ol {
  padding-left: var(--space-xl);
  margin-bottom: var(--space-lg);
}

.article-content li {
  margin-bottom: var(--space-sm);
}

.article-content blockquote {
  border-left: 3px solid var(--zig-orange);
  padding: var(--space-md) var(--space-lg);
  margin: var(--space-lg) 0;
  background: var(--bg-secondary);
  border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

.article-content blockquote p:last-child {
  margin-bottom: 0;
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--space-lg);
  display: block;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.article-content th, .article-content td {
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--border-color);
  text-align: left;
}

.article-content th {
  background: var(--bg-secondary);
  font-weight: 600;
}

.article-content img {
  border-radius: var(--border-radius);
  margin: var(--space-lg) 0;
}

.article-content hr {
  border: none;
  border-top: 1px solid var(--border-color);
  margin: var(--space-2xl) 0;
}

/* --- Page Header --- */
.page-header {
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--border-color);
}

/* --- Breadcrumbs --- */
.breadcrumbs {
  margin-bottom: var(--space-lg);
}

.breadcrumbs ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  font-size: 0.8125rem;
}

.breadcrumbs li:not(:last-child)::after {
  content: "/";
  margin-left: var(--space-xs);
  color: var(--text-muted);
}

.breadcrumbs a {
  color: var(--text-muted);
}

.breadcrumbs a:hover {
  color: var(--zig-orange);
}

.breadcrumbs [aria-current="page"] {
  color: var(--text-secondary);
}

/* --- Related Posts --- */
.related-posts {
  background: var(--bg-secondary);
  padding: var(--space-2xl) 0;
  border-top: 1px solid var(--border-color);
}

/* --- Footer --- */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: var(--space-3xl) 0 var(--space-xl);
  margin-top: auto;
  transition: background var(--transition-theme), border-color var(--transition-theme);
}

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

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

.footer-grid h3 {
  font-size: 1rem;
  color: var(--zig-orange);
  margin-bottom: var(--space-md);
}

.footer-grid p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

.footer-grid ul {
  list-style: none;
}

.footer-grid li {
  margin-bottom: var(--space-sm);
}

.footer-grid a {
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

.footer-grid a:hover {
  color: var(--zig-orange);
}

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

.footer-bottom p {
  color: var(--text-muted);
  font-size: 0.8125rem;
  margin-bottom: var(--space-xs);
}

/* --- Reading Time --- */
.reading-time {
  color: var(--text-muted);
}

/* --- Utility --- */
.text-center { text-align: center; }
.mt-lg { margin-top: var(--space-lg); }
.mb-lg { margin-bottom: var(--space-lg); }

/* --- Syntax Highlighting (Chroma - Monokai) --- */
/* Background */ .bg { color:#f8f8f2;background-color:#272822; }
/* PreWrapper */ .chroma { color:#f8f8f2;background-color:#272822; }
/* Other */ .chroma .x {  }
/* Error */ .chroma .err { color:#960050;background-color:#1e0010 }
/* CodeLine */ .chroma .cl {  }
/* LineLink */ .chroma .lnlinks { outline:none;text-decoration:none;color:inherit }
/* LineTableTD */ .chroma .lntd { vertical-align:top;padding:0;margin:0;border:0; }
/* LineTable */ .chroma .lntable { border-spacing:0;padding:0;margin:0;border:0; }
/* LineHighlight */ .chroma .hl { background-color:#3c3d38 }
/* LineNumbersTable */ .chroma .lnt { white-space:pre;-webkit-user-select:none;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f }
/* LineNumbers */ .chroma .ln { white-space:pre;-webkit-user-select:none;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f }
/* Line */ .chroma .line { display:flex; }
/* Keyword */ .chroma .k { color:#66d9ef }
/* KeywordConstant */ .chroma .kc { color:#66d9ef }
/* KeywordDeclaration */ .chroma .kd { color:#66d9ef }
/* KeywordNamespace */ .chroma .kn { color:#f92672 }
/* KeywordPseudo */ .chroma .kp { color:#66d9ef }
/* KeywordReserved */ .chroma .kr { color:#66d9ef }
/* KeywordType */ .chroma .kt { color:#66d9ef }
/* Name */ .chroma .n {  }
/* NameAttribute */ .chroma .na { color:#a6e22e }
/* NameBuiltin */ .chroma .nb {  }
/* NameBuiltinPseudo */ .chroma .bp {  }
/* NameClass */ .chroma .nc { color:#a6e22e }
/* NameConstant */ .chroma .no { color:#66d9ef }
/* NameDecorator */ .chroma .nd { color:#a6e22e }
/* NameEntity */ .chroma .ni {  }
/* NameException */ .chroma .ne { color:#a6e22e }
/* NameFunction */ .chroma .nf { color:#a6e22e }
/* NameFunctionMagic */ .chroma .fm {  }
/* NameLabel */ .chroma .nl {  }
/* NameNamespace */ .chroma .nn {  }
/* NameOther */ .chroma .nx { color:#a6e22e }
/* NameProperty */ .chroma .py {  }
/* NameTag */ .chroma .nt { color:#f92672 }
/* NameVariable */ .chroma .nv {  }
/* NameVariableClass */ .chroma .vc {  }
/* NameVariableGlobal */ .chroma .vg {  }
/* NameVariableInstance */ .chroma .vi {  }
/* NameVariableMagic */ .chroma .vm {  }
/* Literal */ .chroma .l { color:#ae81ff }
/* LiteralDate */ .chroma .ld { color:#e6db74 }
/* LiteralString */ .chroma .s { color:#e6db74 }
/* LiteralStringAffix */ .chroma .sa { color:#e6db74 }
/* LiteralStringBacktick */ .chroma .sb { color:#e6db74 }
/* LiteralStringChar */ .chroma .sc { color:#e6db74 }
/* LiteralStringDelimiter */ .chroma .dl { color:#e6db74 }
/* LiteralStringDoc */ .chroma .sd { color:#e6db74 }
/* LiteralStringDouble */ .chroma .s2 { color:#e6db74 }
/* LiteralStringEscape */ .chroma .se { color:#ae81ff }
/* LiteralStringHeredoc */ .chroma .sh { color:#e6db74 }
/* LiteralStringInterpol */ .chroma .si { color:#e6db74 }
/* LiteralStringOther */ .chroma .sx { color:#e6db74 }
/* LiteralStringRegex */ .chroma .sr { color:#e6db74 }
/* LiteralStringSingle */ .chroma .s1 { color:#e6db74 }
/* LiteralStringSymbol */ .chroma .ss { color:#e6db74 }
/* LiteralNumber */ .chroma .m { color:#ae81ff }
/* LiteralNumberBin */ .chroma .mb { color:#ae81ff }
/* LiteralNumberFloat */ .chroma .mf { color:#ae81ff }
/* LiteralNumberHex */ .chroma .mh { color:#ae81ff }
/* LiteralNumberInteger */ .chroma .mi { color:#ae81ff }
/* LiteralNumberIntegerLong */ .chroma .il { color:#ae81ff }
/* LiteralNumberOct */ .chroma .mo { color:#ae81ff }
/* Operator */ .chroma .o { color:#f92672 }
/* OperatorWord */ .chroma .ow { color:#f92672 }
/* Punctuation */ .chroma .p {  }
/* Comment */ .chroma .c { color:#75715e }
/* CommentHashbang */ .chroma .ch { color:#75715e }
/* CommentMultiline */ .chroma .cm { color:#75715e }
/* CommentSingle */ .chroma .c1 { color:#75715e }
/* CommentSpecial */ .chroma .cs { color:#75715e }
/* CommentPreproc */ .chroma .cp { color:#75715e }
/* CommentPreprocFile */ .chroma .cpf { color:#75715e }
/* Generic */ .chroma .g {  }
/* GenericDeleted */ .chroma .gd { color:#f92672 }
/* GenericEmph */ .chroma .ge { font-style:italic }
/* GenericError */ .chroma .gr {  }
/* GenericHeading */ .chroma .gh {  }
/* GenericInserted */ .chroma .gi { color:#a6e22e }
/* GenericOutput */ .chroma .go {  }
/* GenericPrompt */ .chroma .gp {  }
/* GenericStrong */ .chroma .gs { font-weight:bold }
/* GenericSubheading */ .chroma .gu { color:#75715e }
/* GenericTraceback */ .chroma .gt {  }
/* GenericUnderline */ .chroma .gl {  }
/* TextWhitespace */ .chroma .w {  }

/* Chroma wrapper integration with site theme */
.highlight {
  margin-bottom: var(--space-lg);
}

.highlight pre {
  margin-bottom: 0;
}

.chroma {
  border-radius: var(--border-radius);
  padding: var(--space-lg);
  overflow-x: auto;
}

/* --- Share Buttons --- */
.article-share {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--border-color);
  margin-top: var(--space-xl);
}

.share-label {
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.share-buttons {
  display: flex;
  gap: var(--space-sm);
}

.share-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--border-radius);
  color: var(--text-secondary);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  transition: all var(--transition);
  text-decoration: none;
}

.share-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.share-twitter:hover { color: #000; background: #e8f5fd; border-color: #1da1f2; }
.share-linkedin:hover { color: #0a66c2; background: #e8f0fe; border-color: #0a66c2; }
.share-reddit:hover { color: #ff4500; background: #fff0eb; border-color: #ff4500; }

/* --- Article Navigation (Prev/Next) --- */
.article-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--border-color);
  margin-top: var(--space-md);
}

.article-nav-link {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  padding: var(--space-md);
  border-radius: var(--border-radius);
  text-decoration: none;
  color: var(--text-primary);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  transition: all var(--transition);
}

.article-nav-link:hover {
  border-color: var(--zig-orange);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.article-nav-empty {
  background: none;
  border: none;
}

.article-nav-next {
  text-align: right;
}

.article-nav-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--zig-orange);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.article-nav-title {
  font-size: 0.9375rem;
  font-weight: 500;
  line-height: 1.4;
  color: var(--text-primary);
}

/* --- CTA Article Section --- */
.cta-article {
  text-align: center;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: var(--space-xl) 0;
}

.cta-article h2 {
  margin-bottom: var(--space-sm);
}

.cta-article p {
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
}

/* --- Mobile Optimizations --- */
@media (max-width: 767px) {
  /* Larger touch targets for nav links (min 44px per WCAG) */
  .site-nav a {
    padding: var(--space-md) var(--space-lg);
    min-height: 44px;
    display: flex;
    align-items: center;
  }

  /* Larger touch targets for tags */
  .tag {
    padding: var(--space-sm) var(--space-lg);
    min-height: 44px;
    display: inline-flex;
    align-items: center;
  }

  .article-tags .tag {
    padding: var(--space-sm) var(--space-md);
    min-height: 40px;
  }

  /* Better code blocks on mobile */
  pre, .chroma {
    padding: var(--space-md);
    font-size: 0.8125rem;
    border-radius: var(--border-radius);
    -webkit-overflow-scrolling: touch;
  }

  /* Scroll hint for code blocks */
  .highlight {
    position: relative;
  }

  .highlight::after {
    content: "\2192";
    position: absolute;
    right: 8px;
    top: 8px;
    font-size: 0.75rem;
    color: var(--text-muted);
    opacity: 0;
    pointer-events: none;
    animation: scroll-hint 2s ease-in-out 1;
  }

  @keyframes scroll-hint {
    0%, 100% { opacity: 0; transform: translateX(0); }
    50% { opacity: 0.7; transform: translateX(4px); }
  }

  /* Larger buttons on mobile */
  .btn {
    padding: 0.875rem 1.75rem;
    min-height: 48px;
    justify-content: center;
    width: 100%;
  }

  .hero-ctas {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-ctas .btn {
    text-align: center;
  }

  /* Better breadcrumb tappability */
  .breadcrumbs a {
    padding: var(--space-xs) var(--space-sm);
    display: inline-block;
  }

  /* Improve readability on small screens */
  .article-content {
    font-size: 1rem;
    line-height: 1.8;
  }

  .article-content h2 {
    font-size: 1.375rem;
  }

  .article-content h3 {
    font-size: 1.125rem;
  }

  /* Full-width post cards on mobile */
  .posts-grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  /* Better FAQ touch targets */
  .faq-question {
    padding: var(--space-lg);
    min-height: 56px;
  }

  /* Prevent horizontal overflow on tables */
  .article-content table {
    font-size: 0.875rem;
  }

  /* Pagination buttons easier to tap */
  .pagination .btn {
    width: auto;
    min-width: 120px;
  }

  /* Post card link larger tap area */
  .post-card-link {
    padding: var(--space-lg);
    min-height: 48px;
    display: flex;
    align-items: center;
  }

  /* Community cards stack better */
  .community-grid {
    grid-template-columns: 1fr;
  }

  .community-card {
    min-height: 44px;
  }

  /* TOC improvements on mobile */
  .toc {
    margin-bottom: var(--space-lg);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--space-md);
  }

  .toc #TableOfContents a {
    padding: var(--space-sm) var(--space-sm);
    min-height: 40px;
    display: flex;
    align-items: center;
  }

  /* Prevent any horizontal overflow on mobile */
  html, body {
    overflow-x: hidden;
    max-width: 100vw;
  }

  /* Ensure images don't break layout */
  img {
    max-width: 100%;
    height: auto;
  }

  /* Improve article content on mobile: prevent long words/URLs from breaking layout */
  .article-content {
    overflow-wrap: break-word;
    word-break: break-word;
    hyphens: auto;
  }

  /* Tables need horizontal scroll wrapper */
  .article-content table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    white-space: nowrap;
  }

  /* Share buttons stack nicely */
  .article-share {
    flex-wrap: wrap;
  }

  .share-btn {
    flex: 1;
    min-width: 100px;
    justify-content: center;
  }

  /* Prev/next nav stacks vertically */
  .article-nav {
    flex-direction: column;
    gap: var(--space-md);
  }

  .article-nav-link {
    width: 100%;
    text-align: center;
  }

  /* Footer grid single column */
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }
}

/* --- Print --- */
@media print {
  .site-header, .site-footer, .toc, .hero-ctas, .community, .cta-final, .faq-section, .theme-toggle {
    display: none;
  }

  body {
    color: #000;
    background: #fff;
  }
}