:root {
  --bg: #fff8f2;
  --bg-alt: #fff1e7;
  --bg-soft: #fffaf6;
  --card-bg: #ffffff;

  --accent-primary: #e77a66;
  --accent-secondary: #f2b190;
  --accent-tertiary: #b9d7c9;
  --accent-gold: #f3d7a3;

  --text-primary: #2a201c;
  --text-secondary: #5f514b;
  --text-muted: #8f817a;
  --text-accent: #b86150;

  --border-light: #f3e4d8;
  --border-subtle: #ead7c8;
  --shadow-soft: 0 8px 24px rgba(164, 112, 92, 0.12);
  --shadow-medium: 0 14px 40px rgba(164, 112, 92, 0.18);
  --shadow-strong: 0 22px 60px rgba(164, 112, 92, 0.22);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 22px;
  --radius-pill: 999px;

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

  --font-body: 'Outfit', sans-serif;
  --font-heading: 'Fraunces', serif;
}

:root[data-theme="dark"] {
  --bg: #161312;
  --bg-alt: #1d1917;
  --bg-soft: #201c1a;
  --card-bg: #221e1c;

  --accent-primary: #f1a08d;
  --accent-secondary: #f2b190;
  --accent-tertiary: #8cc0aa;
  --accent-gold: #e6c07b;

  --text-primary: #f7f1ec;
  --text-secondary: #d4c6bd;
  --text-muted: #a49289;
  --text-accent: #f1a08d;

  --border-light: #332c28;
  --border-subtle: #3f3631;
  --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.3);
  --shadow-medium: 0 16px 44px rgba(0, 0, 0, 0.4);
  --shadow-strong: 0 22px 60px rgba(0, 0, 0, 0.5);
}

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

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

body {
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.6;
  color: var(--text-primary);
  background: radial-gradient(circle at top left, #fff1e8 0%, #fff8f3 40%, #f8f4ef 100%);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

:root[data-theme="dark"] body {
  background: radial-gradient(circle at top left, #231d1a 0%, #191513 45%, #141110 100%);
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

h1 { font-size: clamp(2.3rem, 5vw, 3.8rem); }
h2 { font-size: clamp(1.7rem, 3vw, 2.6rem); }
h3 { font-size: clamp(1.3rem, 2.4vw, 1.9rem); }

p {
  margin-bottom: var(--space-sm);
  color: var(--text-secondary);
}

a {
  color: var(--text-accent);
  text-decoration: none;
  transition: color 0.2s ease, transform 0.2s ease;
}

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

button,
.btn {
  font-family: var(--font-body);
  border: none;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn-primary,
.hero-cta {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  color: #fff;
  padding: var(--space-sm) var(--space-xl);
  font-size: 1rem;
  font-weight: 600;
  box-shadow: var(--shadow-soft);
}

.btn-primary:hover,
.hero-cta:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

.btn-secondary {
  background: var(--card-bg);
  color: var(--text-primary);
  padding: var(--space-sm) var(--space-lg);
  border: 1px solid var(--border-subtle);
}

.app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  padding: var(--space-sm) var(--space-lg);
  background: rgba(255, 250, 246, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-light);
}

:root[data-theme="dark"] .header {
  background: rgba(22, 19, 18, 0.92);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-shrink: 0;
}

.brand-logo {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  box-shadow: var(--shadow-soft);
}

.brand-title {
  font-size: 1.5rem;
  margin: 0;
}

.brand-subtitle {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-style: italic;
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  padding: var(--space-xs);
}

.mobile-menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: all 0.3s ease;
  border-radius: 1px;
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  flex: 1;
  justify-content: center;
}

.nav-link {
  font-weight: 500;
  color: var(--text-secondary);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-pill);
  transition: all 0.2s ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--accent-primary);
  background: rgba(231, 122, 102, 0.1);
}

.header-right {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-shrink: 0;
}

.search-input {
  position: relative;
  display: flex;
  align-items: center;
  background: var(--bg-soft);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-pill);
  padding: var(--space-xs) var(--space-sm);
  min-width: 200px;
}

.search-input:focus-within {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(231, 122, 102, 0.15);
}

.search-input span {
  margin-right: var(--space-xs);
  opacity: 0.6;
}

.search-input input {
  border: none;
  background: none;
  outline: none;
  width: 100%;
  font-size: 0.9rem;
  color: var(--text-primary);
}

.theme-toggle {
  background: var(--card-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-pill);
  padding: var(--space-xs) var(--space-sm);
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.hero {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-2xl);
  align-items: center;
  padding: var(--space-2xl) var(--space-lg);
  max-width: 1200px;
  margin: 0 auto;
}

.hero-title {
  font-size: clamp(2.4rem, 6vw, 4rem);
  margin-bottom: var(--space-md);
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
}

.hero-image {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-medium);
}

.hero-image img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.hero-image:hover img {
  transform: scale(1.04);
}

.ad-slot-banner {
  max-width: 1200px;
  margin: var(--space-lg) auto;
  padding: 0 var(--space-lg);
  text-align: center;
  min-height: 0;
}

.ad-slot-banner .adsbygoogle,
.ad-slot-sidebar .adsbygoogle,
.ad-slot-article .adsbygoogle {
  border-radius: var(--radius-md);
  overflow: hidden;
  min-width: 0;
  min-height: 0;
  display: block !important;
}

.main {
  flex: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
  width: 100%;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.featured-section {
  padding: var(--space-2xl) 0;
}

.featured-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-xl);
}

.categories-section {
  padding: var(--space-2xl) var(--space-lg);
  background: var(--bg-alt);
  margin: var(--space-2xl) calc(-1 * var(--space-lg));
}

.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-lg);
}

.category-card {
  background: var(--card-bg);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--border-light);
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-medium);
}

.category-icon {
  font-size: 2.6rem;
  margin-bottom: var(--space-md);
}

.content-wrapper {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: var(--space-2xl);
  padding: var(--space-2xl) 0;
}

.main-content {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-soft);
  min-height: 400px;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.sidebar-section {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--border-light);
}

.sidebar-header h3 {
  font-size: 1.2rem;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.newsletter-card {
  text-align: center;
}

.newsletter-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.newsletter-form input {
  padding: var(--space-sm);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  background: var(--bg-soft);
}

.newsletter-form button {
  background: var(--accent-primary);
  color: #fff;
  padding: var(--space-sm);
  border-radius: var(--radius-md);
  font-weight: 600;
}

.skin-guide-card {
  background: linear-gradient(135deg, var(--accent-tertiary), #8cc8b3);
  color: #fff;
  text-align: center;
  padding: var(--space-lg);
  border-radius: var(--radius-md);
}

.skin-guide-card h3,
.skin-guide-card p {
  color: #fff;
}

.skin-quiz-btn {
  background: #fff;
  color: #4b7f6b;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-pill);
  font-weight: 600;
}

.category-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.category-chip {
  background: var(--bg-soft);
  color: var(--text-secondary);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  border: 1px solid var(--border-subtle);
  cursor: pointer;
}

.category-chip:hover,
.category-chip.active {
  background: var(--accent-primary);
  color: #fff;
  border-color: var(--accent-primary);
}

.article-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--border-light);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-medium);
}

.article-card-image {
  position: relative;
  overflow: hidden;
  height: 200px;
}

.article-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

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

.article-badge {
  position: absolute;
  top: var(--space-sm);
  left: var(--space-sm);
  background: var(--accent-primary);
  color: #fff;
  padding: 4px var(--space-sm);
  border-radius: var(--radius-pill);
  font-size: 0.75rem;
  font-weight: 600;
}

.article-card-content {
  padding: var(--space-lg);
}

.article-category {
  color: var(--accent-primary);
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 1px;
  font-size: 0.75rem;
}

.article-title {
  font-size: 1.3rem;
  margin-top: var(--space-xs);
}

.article-excerpt {
  font-size: 0.95rem;
  margin-bottom: var(--space-md);
}

.article-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

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

.tag {
  background: var(--bg-alt);
  color: var(--text-accent);
  padding: 4px var(--space-xs);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
}

.read-time {
  background: var(--bg-soft);
  padding: 2px var(--space-xs);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
}

.popular-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.popular-item {
  display: flex;
  gap: var(--space-sm);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--border-light);
  cursor: pointer;
  transition: transform 0.2s ease;
}

.popular-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

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

.popular-item-image {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  overflow: hidden;
  flex-shrink: 0;
}

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

.popular-item-content h4 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
  line-height: 1.4;
}

.popular-item-meta {
  color: var(--text-muted);
  font-size: 0.75rem;
}

.footer {
  background: var(--bg-soft);
  padding: var(--space-2xl) 0 var(--space-lg);
  margin-top: var(--space-2xl);
  border-top: 1px solid var(--border-light);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-xl);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--space-xs);
}

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

.social-link {
  width: 40px;
  height: 40px;
  background: var(--accent-primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s ease;
}

.social-link:hover {
  transform: translateY(-2px);
}

.footer-bottom {
  max-width: 1200px;
  margin: var(--space-xl) auto 0;
  padding: var(--space-lg) var(--space-lg) 0;
  border-top: 1px solid var(--border-subtle);
  text-align: center;
}

.article-header {
  background: var(--bg-soft);
  border-bottom: 1px solid var(--border-light);
  padding: var(--space-md) var(--space-lg);
}

.article-nav {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
}

.back-link {
  color: var(--text-secondary);
  font-weight: 500;
}

.share-btn {
  background: var(--accent-primary);
  color: #fff;
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-pill);
}

.article-main {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-lg);
}

.article-container {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: var(--space-2xl);
  align-items: start;
}

.article-container > :not(.article-sidebar) {
  grid-column: 1;
}

.article-sidebar {
  grid-column: 2;
  grid-row: 1 / -1;
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  position: sticky;
  top: 120px;
}

.article-hero {
  margin-bottom: var(--space-lg);
}

.article-hero .article-meta {
  justify-content: flex-start;
  gap: var(--space-md);
}

.article-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  margin-bottom: var(--space-xl);
}

.article-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.article-content .lead {
  font-size: 1.1rem;
  color: var(--text-secondary);
}

.article-content ul,
.article-content ol {
  padding-left: 1.2rem;
  color: var(--text-secondary);
}

.ingredients-grid,
.recipe-grid,
.comparison-grid,
.rules-grid,
.schedule-grid,
.retinoid-types,
.diet-columns,
.lifestyle-sections,
.cycle-phases,
.timing-patterns,
.treatment-options,
.routine-steps,
.related-list,
.product-recommendations,
.bonus-ingredients,
.cost-comparison,
.action-steps,
.tracking-tips,
.decision-tree,
.timeline-content,
.acne-types,
.treatment-levels {
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.ingredient-card,
.recipe-card,
.comparison-card,
.retinoid-type,
.acne-type-card,
.rule-card,
.guideline-card,
.cost-card,
.schedule-day,
.phase,
.face-zone,
.treatment-option,
.treatment-tier,
.routine-step,
.step,
.decision-node,
.timeline-item,
.tracking-tip,
.supplement-item,
.specialist,
.product-rec,
.bonus-item,
.rec,
.cost-item,
.checklist-item,
.pattern-result,
.wellness-tips,
.other-specialists,
.final-tip,
.tip-box,
.warning-box,
.conclusion,
.timing,
.timeline-item,
.timeline-expectations {
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-soft);
}

.tip-box,
.final-tip {
  border-left: 4px solid var(--accent-tertiary);
  background: rgba(185, 215, 201, 0.18);
}

.warning-box {
  border-left: 4px solid var(--accent-primary);
  background: rgba(231, 122, 102, 0.12);
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent-primary);
  color: #fff;
  font-weight: 600;
  margin-right: var(--space-xs);
}

.recipe-meta,
.strength-meter,
.meter-bar,
.price-range,
.branch-label,
.routine-time {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.strength-meter {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  margin: var(--space-sm) 0;
}

.meter-bar {
  height: 8px;
  background: var(--bg-alt);
  border-radius: var(--radius-pill);
  overflow: hidden;
}

.meter-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
}

.related-item {
  display: flex;
  gap: var(--space-sm);
  background: var(--card-bg);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}

.related-item img {
  width: 80px;
  height: 80px;
  object-fit: cover;
}

.related-content h4 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.article-footer {
  background: var(--bg-soft);
  border-top: 1px solid var(--border-light);
  padding: var(--space-lg) var(--space-lg);
}

.article-footer .footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-lg);
}

.article-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
}

.article-modal-content {
  position: relative;
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  max-width: 820px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-strong);
  z-index: 1;
}

.article-full {
  padding: var(--space-2xl);
}

.article-full .article-title {
  font-size: clamp(1.7rem, 3vw, 2.4rem);
}

.article-full .article-meta {
  justify-content: flex-start;
  gap: var(--space-md);
}

.article-full .article-image img {
  height: 320px;
  width: 100%;
  object-fit: cover;
}

.article-full .article-body {
  font-size: 1.05rem;
  line-height: 1.7;
}

.modal-close {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  background: var(--accent-primary);
  color: #fff;
  border: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.article-modal .article-footer {
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border-light);
  text-align: center;
  background: none;
}

.notification {
  position: fixed;
  top: 20px;
  right: 20px;
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-medium);
  z-index: 1000;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  animation: slideInFromRight 0.3s ease;
  max-width: 300px;
}

.notification-success {
  background: #16a34a;
  color: #fff;
}

.notification-error {
  background: #dc2626;
  color: #fff;
}

.notification-info {
  background: var(--accent-primary);
  color: #fff;
}

.notification button {
  background: none;
  border: none;
  color: inherit;
  font-size: 1.2rem;
  cursor: pointer;
  padding: 0;
}

@keyframes slideInFromRight {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

.empty-state {
  text-align: center;
  padding: var(--space-2xl);
  color: var(--text-secondary);
}

.empty-state-icon {
  font-size: 3rem;
  margin-bottom: var(--space-md);
  opacity: 0.6;
}

.fade-in {
  animation: fadeIn 0.6s ease forwards;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Related Articles Styles */
.related-articles {
  margin: var(--space-xl) 0;
  padding: var(--space-xl);
  background: var(--surface-primary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
}

.related-articles h3 {
  color: var(--text-primary);
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--space-lg);
  text-align: center;
}

.related-articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-lg);
}

.related-article-card {
  background: var(--surface-secondary);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all 0.3s ease;
  border: 1px solid var(--border-light);
  text-decoration: none;
  color: inherit;
}

.related-article-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
  text-decoration: none;
  color: inherit;
}

.related-article-image {
  position: relative;
  height: 160px;
  overflow: hidden;
}

.related-article-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

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

.related-article-content {
  padding: var(--space-md);
}

.related-article-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
  line-height: 1.4;
}

.related-article-description {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: var(--space-md);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-article-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--accent-primary);
  font-size: 0.875rem;
  font-weight: 500;
  transition: color 0.3s ease;
}

.related-article-card:hover .related-article-cta {
  color: var(--accent-secondary);
}

/* Responsive adjustments for related articles */
@media (max-width: 768px) {
  .related-articles {
    padding: var(--space-lg);
    margin: var(--space-lg) 0;
  }
  
  .related-articles-grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }
  
  .related-article-image {
    height: 140px;
  }
}

button:focus-visible,
a:focus-visible,
input:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

@media (max-width: 980px) {
  .content-wrapper {
    grid-template-columns: 1fr;
  }

  .article-container {
    grid-template-columns: 1fr;
  }

  .article-sidebar {
    position: static;
    grid-column: 1;
    grid-row: auto;
  }
}

@media (max-width: 768px) {
  .header {
    padding: var(--space-sm);
  }

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

  .nav-menu {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--card-bg);
    flex-direction: column;
    padding: var(--space-lg);
    box-shadow: var(--shadow-medium);
    border-top: 1px solid var(--border-subtle);
    transform: translateY(-120%);
    transition: transform 0.3s ease;
  }

  .nav-menu.active {
    transform: translateY(0);
  }

  .search-input {
    min-width: 150px;
  }

  .hero {
    padding: var(--space-xl) var(--space-sm);
    text-align: center;
  }

  .hero-image img {
    height: 320px;
  }

  .content-wrapper {
    padding: var(--space-xl) 0;
  }

  .footer-content,
  .article-footer .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .brand-title {
    font-size: 1.2rem;
  }

  .brand-subtitle {
    display: none;
  }

  .theme-toggle-text {
    display: none;
  }
}

/* Lazy Loading Performance Optimizations */
.lazy-image {
  opacity: 0;
  transition: opacity 0.3s ease;
  background-color: var(--surface-secondary);
  min-height: 200px;
}

.lazy-image.loaded {
  opacity: 1;
}

/* Image performance optimizations */
img {
  content-visibility: auto;
  contain-intrinsic-size: 300px 200px;
}

.article-image,
.related-article-image img,
.article-card-image img {
  will-change: transform;
  backface-visibility: hidden;
}

/* Reduce layout shift */
.article-card-image {
  aspect-ratio: 16/9;
}

.related-article-image {
  aspect-ratio: 16/9;
}

/* Critical resource hints */
.preload-content {
  content-visibility: visible;
  contain-intrinsic-size: auto 500px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .lazy-image {
    transition: none;
  }
}