/* Global styles for TrakinTech Tech — based on Cyber-Vernacular design system */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;700&family=Geist:wght@400;600;700;800&display=swap');

:root {
  /* === Design Tokens (Cyber-Vernacular) === */
  --surface-dim: #0b1326;
  --surface-container-lowest: #060e20;
  --surface-container-low: #131b2e;
  --surface-container: #171f33;
  --surface-container-high: #222a3d;
  --surface-container-highest: #2d3449;
  --surface-bright: #31394d;
  --surface-variant: #2d3449;

  --primary: #dbfcff;
  --on-primary: #00363a;
  --primary-container: #00f0ff;
  --on-primary-container: #006970;
  --primary-fixed: #7df4ff;
  --primary-fixed-dim: #00dbe9;
  --on-primary-fixed: #002022;
  --on-primary-fixed-variant: #004f54;
  --inverse-primary: #006970;
  --inverse-surface: #dae2fd;
  --inverse-on-surface: #283044;

  --secondary: #d7ffc5;
  --on-secondary: #053900;
  --secondary-container: #2ff801;
  --on-secondary-container: #0f6d00;
  --secondary-fixed: #79ff5b;
  --secondary-fixed-dim: #2ae500;
  --on-secondary-fixed: #022100;
  --on-secondary-fixed-variant: #095300;

  --tertiary: #faf3ff;
  --on-tertiary: #3c0090;
  --tertiary-container: #e1d2ff;
  --on-tertiary-container: #7213ff;
  --tertiary-fixed: #e9ddff;
  --tertiary-fixed-dim: #d1bcff;
  --on-tertiary-fixed: #23005b;
  --on-tertiary-fixed-variant: #5700c9;

  --background: #0b1326;
  --on-background: #dae2fd;
  --on-surface: #dae2fd;
  --on-surface-variant: #b9cacb;
  --outline: #849495;
  --outline-variant: #3b494b;

  --error: #ffb4ab;
  --on-error: #690005;
  --error-container: #93000a;
  --on-error-container: #ffdad6;

  /* Layout */
  --container-max: 1200px;
  --gutter: 16px;
  --radius-sm: 2px;
  --radius: 4px;
  --radius-lg: 8px;
  --radius-xl: 12px;

  /* Typography */
  --font-headline: 'Geist', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* === Main Content Layout === */
.main-content {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 88px 16px 48px;
}

@media (min-width: 768px) {
  .main-content { padding: 88px 24px 48px; }
}

/* === Article Title === */
.article-title {
  font-size: 36px;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--on-surface);
  max-width: 720px;
}

@media (min-width: 768px) {
  .article-title { font-size: 44px; }
}

/* === Article Label === */
.article-label {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--primary-container);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  display: block;
  margin-bottom: 12px;
}

/* === Article Hero Image === */
.article-hero-img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--outline-variant);
}

.article-hero-img img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  display: block;
}

@media (min-width: 1024px) {
  .article-hero-img img { height: 500px; }
}

/* === Article Meta === */
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 14px;
  color: var(--on-surface-variant);
  margin-top: 12px;
  max-width: 720px;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 24px;
  color: var(--on-background);
  background-color: var(--background);
  /* 32px dot grid background pattern */
  background-image: radial-gradient(circle at 1px 1px, rgba(255,255,255,0.04) 1px, transparent 0);
  background-size: 32px 32px;
  min-height: 100vh;
}

/* === Typography Scale === */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-headline);
  color: var(--on-surface);
  font-weight: 700;
  line-height: 1.2;
}

h1 {
  font-size: 48px;
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 56px;
}

h2 {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 40px;
}

h3 {
  font-size: 24px;
  font-weight: 600;
  line-height: 32px;
}

h4 {
  font-size: 20px;
  font-weight: 700;
  line-height: 24px;
}

p {
  font-size: 16px;
  line-height: 24px;
  color: var(--on-surface-variant);
}

p.large {
  font-size: 18px;
  line-height: 28px;
}

.label-caps {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  line-height: 16px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* === Container === */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 16px;
}

@media (min-width: 768px) {
  .container { padding: 0 24px; }
}

/* === Components: Badges === */
.badge {
  display: inline-block;
  padding: 4px 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  border: 1px solid var(--outline-variant);
}

.badge.primary-container {
  background: var(--primary-container);
  color: var(--on-primary-container);
  border: none;
}

.badge.primary-fixed {
  background: var(--primary-fixed-dim);
  color: var(--on-primary-fixed);
  border: none;
}

.badge.secondary-container {
  background: var(--secondary-container);
  color: var(--on-secondary-container);
  border: none;
}

.badge.secondary-fixed {
  background: rgba(121, 255, 91, 0.15);
  color: var(--secondary-fixed);
  border: 1px solid rgba(121, 255, 91, 0.3);
}

.badge.tertiary-fixed {
  background: rgba(225, 210, 255, 0.12);
  color: var(--tertiary-fixed);
  border: 1px solid rgba(225, 210, 255, 0.25);
}

.badge.outline {
  background: var(--surface-container);
  color: var(--on-surface-variant);
  border-color: var(--outline-variant);
}

/* === Components: Cards === */
.card {
  background: var(--surface-container);
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.25s ease;
}

.card:hover {
  border-color: rgba(0, 219, 233, 0.4);
  box-shadow: 0 0 20px rgba(0, 219, 233, 0.08);
}

.card.shadow-glow {
  box-shadow: 0 4px 24px rgba(0, 219, 233, 0.06);
}

/* === Components: Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
}

.btn-primary {
  background: var(--primary-container);
  color: var(--on-primary-container);
}

.btn-primary:hover {
  background: var(--primary-fixed-dim);
  color: var(--on-primary-fixed);
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
}

.btn-secondary {
  background: var(--secondary-fixed);
  color: var(--on-secondary-fixed);
}

.btn-secondary:hover {
  filter: brightness(1.1);
}

.btn-outline {
  background: transparent;
  color: var(--on-surface);
  border: 1px solid var(--outline-variant);
}

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

.btn-glow {
  box-shadow: 0 0 15px rgba(0, 219, 233, 0.3);
}

/* === Components: Specs Table === */
.specs-table {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.spec-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--outline-variant);
}

.spec-label {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--on-surface-variant);
}

.spec-value {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--primary-container);
}

/* === Components: Score Card === */
.score-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
  background: var(--secondary-container);
  border: 2px solid var(--secondary-fixed-dim);
  border-radius: var(--radius-lg);
  font-family: var(--font-mono);
  font-size: 40px;
  font-weight: 700;
  color: var(--on-secondary-container);
}

/* === Components: Progress Bars === */
.progress-bar {
  width: 100%;
  height: 6px;
  background: var(--surface-container);
  border-radius: 999px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--primary-container);
  border-radius: 999px;
  transition: width 0.5s ease;
}

.progress-fill.green {
  background: var(--secondary-fixed);
}

/* === Components: Glass Panel === */
.glass-panel {
  background: rgba(30, 41, 59, 0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(0, 219, 233, 0.2);
  border-radius: var(--radius-lg);
}

/* === Components: Spec Chips === */
.spec-chip {
  display: inline-block;
  padding: 4px 10px;
  background: var(--surface-container-high);
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 400;
  color: var(--on-surface-variant);
  transition: all 0.2s ease;
}

.spec-chip:hover {
  border-color: var(--primary-container);
  color: var(--primary-container);
}

/* === Components: Progress Bars === */
.progress-bar {
  width: 100%;
  height: 6px;
  background: var(--surface-container);
  border-radius: 999px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--primary-container);
  border-radius: 999px;
  transition: width 0.5s ease;
}

/* === Navigation === */
.top-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background: var(--surface-dim);
  border-bottom: 1px solid var(--outline-variant);
  height: 64px;
  display: flex;
  align-items: center;
}

.nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 16px;
}

@media (min-width: 768px) {
  .nav-inner { padding: 0 24px; }
}

.nav-logo {
  font-family: var(--font-headline);
  font-size: 24px;
  font-weight: 800;
  color: var(--primary-container);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}

.nav-links a {
  font-family: var(--font-body);
  font-size: 16px;
  color: var(--on-surface-variant);
  text-decoration: none;
  transition: color 0.2s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary-container);
}

.nav-links a.active {
  font-weight: 700;
  border-bottom: 2px solid var(--primary-container);
  padding-bottom: 2px;
}

.nav-search {
  display: none;
  align-items: center;
  background: var(--surface-container);
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius);
  padding: 6px 12px;
}

@media (min-width: 1024px) {
  .nav-search { display: flex; }
}

.nav-search input {
  background: transparent;
  border: none;
  outline: none;
  color: var(--on-surface);
  font-size: 14px;
  width: 160px;
}

.nav-search input::placeholder {
  color: var(--on-surface-variant);
}

.nav-icons {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-icon {
  color: var(--primary-container);
  cursor: pointer;
  transition: transform 0.15s ease;
}

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

/* === Hero Section === */
.hero-card {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gutter);
  background: var(--surface-container);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(0, 219, 233, 0.2);
  box-shadow: 0 4px 24px rgba(0, 219, 233, 0.06);
  transition: all 0.3s ease;
  cursor: pointer;
}

@media (min-width: 1024px) {
  .hero-card {
    grid-template-columns: 7fr 5fr;
  }
}

.hero-card:hover {
  box-shadow: 0 8px 32px rgba(0, 219, 233, 0.12);
}

.hero-image {
  position: relative;
  height: 300px;
}

@media (min-width: 1024px) {
  .hero-image { height: 560px; }
}

.hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-image-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 16px;
  background: linear-gradient(to top, var(--surface-dim), transparent);
}

.hero-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 32px;
  gap: 24px;
}

.hero-content h1 {
  font-size: 28px;
}

@media (min-width: 768px) {
  .hero-content h1 {
    font-size: 32px;
  }
}

.hero-content p {
  font-size: 16px;
  line-height: 26px;
}

/* === Content Grid (8:4 layout) === */
.content-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gutter);
}

@media (min-width: 1024px) {
  .content-grid {
    grid-template-columns: 8fr 4fr;
  }
}

/* === Section Headers === */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-left: 4px solid var(--primary-container);
  padding-left: 16px;
  margin-bottom: 16px;
}

.section-header h2 {
  font-size: 24px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  color: var(--on-surface);
}

.section-header a {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--primary-container);
  text-decoration: none;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* === Gadget Cards Grid === */
.gadgets-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gutter);
}

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

.gadget-card-wide {
  display: flex;
  flex-direction: column;
}

@media (min-width: 768px) {
  .gadget-card-wide {
    flex-direction: row;
  }
}

.gadget-card-wide .card-image {
  height: 200px;
}

.gadget-card-wide .card-content {
  padding: 20px;
}

@media (min-width: 768px) {
  .gadget-card-wide .card-image {
    width: 50%;
    height: auto;
  }
}

.card-image {
  overflow: hidden;
}

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

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

.card-content {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* === Sidebar === */
.sidebar-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 8px 0;
  cursor: pointer;
  transition: all 0.2s ease;
}

.sidebar-item:hover {
  transform: translateX(4px);
}

.sidebar-number {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background: var(--surface-container-high);
  border: 1px solid rgba(0, 219, 233, 0.2);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--primary-container);
}

.sidebar-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--on-surface);
  line-height: 1.4;
  transition: color 0.2s ease;
}

.sidebar-item:hover .sidebar-title {
  color: var(--primary-fixed);
}

.sidebar-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 10px;
  color: var(--on-surface-variant);
  margin-top: 4px;
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

.sidebar-separator {
  width: 6px;
  height: 6px;
  background: var(--outline);
  border-radius: 50%;
}

/* === Category Sections === */
.categories-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gutter);
}

@media (min-width: 768px) {
  .categories-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.category-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--outline-variant);
  margin-bottom: 16px;
}

.category-header h3 {
  font-size: 18px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0;
}

.category-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.category-list li a {
  font-size: 14px;
  font-weight: 600;
  color: var(--on-surface);
  text-decoration: none;
  transition: color 0.2s ease;
  display: block;
}

.category-list li a:hover {
  color: var(--primary-container);
}

/* === Article Hero === */
.article-hero-header {
  margin-bottom: 32px;
}

.article-hero-header .article-label {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--primary-container);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 12px;
  display: block;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 14px;
  color: var(--on-surface-variant);
  margin-top: 12px;
}

.article-meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* === Article Content === */
.article-content {
  max-width: 720px;
}

.article-content p {
  font-size: 16px;
  line-height: 28px;
  color: var(--on-surface-variant);
  margin-bottom: 24px;
}

.article-content p.lead {
  font-size: 18px;
  line-height: 28px;
  color: var(--on-surface);
}

.article-content h2 {
  font-size: 28px;
  margin-top: 40px;
  margin-bottom: 16px;
}

.article-content blockquote {
  border-left: 4px solid var(--primary-container);
  padding-left: 20px;
  margin: 24px 0;
  color: var(--on-surface);
  font-style: italic;
}

/* === Article Image === */
.article-image-wrapper {
  margin: 32px 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--outline-variant);
}

.article-image-wrapper img {
  width: 100%;
  display: block;
}

.article-image-caption {
  background: var(--surface-container-high);
  padding: 12px;
  text-align: center;
}

.article-image-caption p {
  font-size: 12px;
  color: var(--on-surface-variant);
  font-style: italic;
  margin: 0;
}

/* === Pros & Cons === */
.pros-cons-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gutter);
  margin: 32px 0;
}

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

.pros-card, .cons-card {
  background: var(--surface-container-low);
  padding: 24px;
  border-radius: var(--radius-lg);
}

.pros-card {
  border-left: 4px solid var(--secondary-fixed);
}

.cons-card {
  border-left: 4px solid var(--error);
}

.pros-card h4, .cons-card h4 {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.pros-card h4 { color: var(--secondary-fixed); }
.cons-card h4 { color: var(--error); }

.pros-card ul, .cons-card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.pros-card li, .cons-card li {
  font-size: 14px;
  color: var(--on-surface);
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.pros-card li::before {
  content: '+';
  font-weight: 700;
  color: var(--secondary-fixed);
}

.cons-card li::before {
  content: '-';
  font-weight: 700;
  color: var(--error);
}

/* === YouTube Embed === */
.video-wrapper {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  margin: 32px 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--outline-variant);
}

.video-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

/* === Rating Section === */
.rating-section {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gutter);
  margin-top: 40px;
  padding-top: 40px;
  border-top: 1px solid var(--outline-variant);
}

@media (min-width: 1024px) {
  .rating-section {
    grid-template-columns: 8fr 4fr;
  }
}

/* === Sidebar Sticky === */
.sidebar-sticky {
  position: sticky;
  top: 80px;
}

/* === Nerdy Score Card === */
.score-card {
  background: var(--surface-container-high);
  border-radius: var(--radius-lg);
  padding: 32px;
  border: 1px solid rgba(0, 219, 233, 0.3);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.score-card::before {
  content: '';
  position: absolute;
  top: -20px;
  right: -20px;
  width: 100px;
  height: 100px;
  background: rgba(0, 219, 233, 0.1);
  border-radius: 50%;
  filter: blur(20px);
}

.score-card .score-label {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--primary-fixed-dim);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: block;
  margin-bottom: 16px;
}

.score-card .score-value {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 128px;
  height: 128px;
  background: var(--secondary-container);
  border: 2px solid var(--secondary-fixed-dim);
  border-radius: var(--radius-lg);
  font-family: var(--font-mono);
  font-size: 48px;
  font-weight: 700;
  color: var(--on-secondary-container);
  position: relative;
  z-index: 1;
}

.score-card .score-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--on-surface);
  margin-top: 16px;
}

/* === Rating Bars === */
.rating-bars {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 24px;
}

.rating-bar-item label {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--on-surface-variant);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 6px;
}

/* === Newsletter Card === */
.newsletter-card {
  background: var(--surface-container-lowest);
  padding: 24px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--outline-variant);
  margin-top: 24px;
}

.newsletter-card h4 {
  font-size: 20px;
  margin-bottom: 8px;
}

.newsletter-card p {
  font-size: 14px;
  margin-bottom: 16px;
}

.newsletter-form {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.newsletter-form input {
  background: var(--surface-variant);
  border: none;
  border-radius: var(--radius);
  padding: 10px 14px;
  font-size: 14px;
  color: var(--on-surface);
  outline: none;
}

.newsletter-form input:focus {
  box-shadow: 0 0 0 2px var(--primary-container);
}

/* === Related Articles === */
.related-section {
  margin-top: 48px;
  padding-top: 48px;
  border-top: 1px solid var(--outline-variant);
}

.related-section h3 {
  font-size: 28px;
  margin-bottom: 24px;
}

.related-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gutter);
}

@media (min-width: 768px) {
  .related-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.related-card {
  background: var(--surface-container);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid transparent;
  transition: all 0.3s ease;
  cursor: pointer;
  text-decoration: none;
  display: block;
}

.related-card:hover {
  border-color: rgba(0, 219, 233, 0.3);
  box-shadow: 0 4px 24px rgba(0, 219, 233, 0.08);
}

.related-card .card-image {
  height: 192px;
}

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

.related-card:hover .card-image img {
  transform: scale(1.1);
}

.related-card .card-content {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.related-card .card-content h4 {
  font-size: 18px;
}

.related-card .card-content p {
  font-size: 14px;
  line-height: 22px;
  margin: 0;
}

/* === Quick Specs Panel === */
.quick-specs {
  background: var(--surface-container);
  padding: 24px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(0, 219, 233, 0.2);
}

.quick-specs h3 {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--primary-container);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 20px;
}

/* === Price Box === */
.price-box {
  background: var(--secondary-container);
  padding: 16px;
  border-radius: var(--radius-lg);
  text-align: center;
}

.price-box .price-label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--on-secondary-container);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.price-box .price-value {
  font-size: 24px;
  font-weight: 700;
  color: var(--on-secondary-container);
}

/* === Divider === */
.divider {
  height: 1px;
  background: var(--outline-variant);
  border: none;
  margin: 32px 0;
}

/* === Back Link === */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--primary-container);
  text-decoration: none;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 24px;
  transition: color 0.2s ease;
}

.back-link:hover {
  color: var(--primary-fixed);
}

/* === Footer === */
.site-footer {
  background: var(--surface-container-lowest);
  border-top: 1px solid var(--outline-variant);
  margin-top: 64px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  padding: 48px 16px;
  max-width: var(--container-max);
  margin: 0 auto;
}

@media (min-width: 768px) {
  .footer-inner {
    grid-template-columns: repeat(3, 1fr);
    padding: 48px 24px;
  }
}

.footer-brand h3 {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 22px;
}

.footer-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.footer-link-group h4 {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--secondary-fixed);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.footer-link-group a {
  display: block;
  font-size: 14px;
  color: var(--on-surface-variant);
  text-decoration: none;
  transition: color 0.2s ease;
  margin-bottom: 6px;
}

.footer-link-group a:hover {
  color: var(--secondary-fixed);
}

.footer-sitemap {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

/* === Mobile Nav Toggle === */
.nav-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  border: none;
  color: var(--primary-container);
  cursor: pointer;
  padding: 8px;
}

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

.mobile-menu {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--surface-dim);
  z-index: 40;
  padding: 24px;
  flex-direction: column;
  gap: 16px;
}

.mobile-menu.open {
  display: flex;
}

.mobile-menu a {
  font-size: 18px;
  color: var(--on-surface);
  text-decoration: none;
  padding: 12px 0;
  border-bottom: 1px solid var(--outline-variant);
}

.mobile-menu a:hover,
.mobile-menu a.active {
  color: var(--primary-container);
}

/* === Article Tags === */
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

/* === Utility Classes === */
.text-primary { color: var(--primary-container); }
.text-primary-fixed { color: var(--primary-fixed-dim); }
.text-secondary { color: var(--secondary-fixed); }
.text-tertiary { color: var(--tertiary-fixed); }
.text-error { color: var(--error); }
.text-surface { color: var(--on-surface); }
.text-variant { color: var(--on-surface-variant); }

.mt-2 { margin-top: 8px; }
.mt-4 { margin-top: 16px; }
.mt-6 { margin-top: 24px; }
.mt-8 { margin-top: 32px; }
.mb-2 { margin-bottom: 8px; }
.mb-4 { margin-bottom: 16px; }
.mb-6 { margin-bottom: 24px; }
.mb-8 { margin-bottom: 32px; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }
.gap-6 { gap: 24px; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.hidden { display: none; }
.w-full { width: 100%; }
.h-full { height: 100%; }
.text-center { text-align: center; }
.relative { position: relative; }
.overflow-hidden { overflow: hidden; }
.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.grid { display: grid; }
.grid-cols-1 { grid-template-columns: 1fr; }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.cols-12 { grid-template-columns: repeat(12, 1fr); }
.lg\:grid-cols-12 { grid-template-columns: repeat(12, 1fr); }
.lg\:col-span-8 { grid-column: span 8; }
.lg\:col-span-4 { grid-column: span 4; }
.justify-center { justify-content: center; }
.col-span-12 { grid-column: 1 / -1; }

@media (min-width: 1024px) {
  .lg\:grid-cols-12 { grid-template-columns: repeat(12, 1fr); }
  .lg\:col-span-8 { grid-column: span 8; }
  .lg\:col-span-4 { grid-column: span 4; }
}

@media (min-width: 768px) {
  .md\:grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
}

/* === SVG Icons (Material Symbols fallback) === */
.icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  font-size: 18px;
}

/* === Responsive: Hero mobile adjustments === */
@media (max-width: 767px) {
  h1 { font-size: 32px; line-height: 40px; }
  h2 { font-size: 24px; line-height: 32px; }
}