/* ============================================
   Nexavar Tech - Editorial Magazine Style
   Design: Warm, scholarly, editorial aesthetic
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
  --color-primary: #1a3c5e;
  --color-primary-light: #2a5f8f;
  --color-primary-dark: #0f2640;
  --color-accent: #d4763c;
  --color-accent-light: #e8944f;
  --color-accent-dark: #b85e2a;
  --color-bg: #faf8f5;
  --color-bg-warm: #f5f0ea;
  --color-bg-card: #ffffff;
  --color-text: #2c2c2c;
  --color-text-light: #6b6b6b;
  --color-text-muted: #999999;
  --color-border: #e8e2da;
  --color-border-light: #f0ebe4;
  --color-exam: #c0392b;
  --color-exam-bg: #fdf2f0;
  --color-skill: #27ae60;
  --color-skill-bg: #f0faf4;
  --color-lang: #8e44ad;
  --color-lang-bg: #f8f0fc;
  --font-display: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-body: 'Source Sans 3', 'Source Sans Pro', 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --max-width: 1280px;
  --max-width-narrow: 860px;
  --max-width-article: 740px;
  --header-height: 72px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.1);
  --shadow-xl: 0 16px 50px rgba(0,0,0,0.12);
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 20px;
}

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body { font-family: var(--font-body); color: var(--color-text); background-color: var(--color-bg); line-height: 1.7; min-height: 100vh; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--color-accent); }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { font-family: var(--font-display); font-weight: 700; line-height: 1.25; color: var(--color-primary-dark); }

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

/* ============================================
   HEADER & NAVIGATION
   ============================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(250, 248, 245, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border-light);
  transition: box-shadow var(--transition-base);
}
.site-header.scrolled {
  box-shadow: var(--shadow-md);
}

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

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: var(--color-primary-dark);
}
.logo:hover { color: var(--color-primary-dark); }
.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
}
.logo-accent {
  color: var(--color-accent-light);
}
.logo-text {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* Main Navigation */
.main-nav {
  display: flex;
  align-items: center;
}
.nav-list {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: var(--space-xs);
}
.nav-link {
  display: inline-flex;
  align-items: center;
  padding: var(--space-sm) var(--space-md);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  position: relative;
}
.nav-link:hover,
.nav-link.active {
  color: var(--color-primary);
  background: rgba(26, 60, 94, 0.06);
}
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 3px;
  background: var(--color-accent);
  border-radius: 2px;
}

/* Dropdown */
.nav-dropdown {
  position: relative;
}
.nav-dropdown-toggle {
  cursor: pointer;
}
.dropdown-arrow {
  display: inline-block;
  margin-left: 4px;
  font-size: 0.7em;
  vertical-align: middle;
  transition: transform var(--transition-fast);
}
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-sm);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all var(--transition-fast);
  z-index: 1001;
}
.dropdown-menu li a {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  color: var(--color-text);
  transition: background var(--transition-fast);
}
.dropdown-menu li a:hover {
  background: var(--color-bg-warm);
  color: var(--color-text);
}
.nav-dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}
.search-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  color: var(--color-text);
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  font-size: 1.2rem;
}
.search-toggle:hover {
  background: rgba(26, 60, 94, 0.06);
  color: var(--color-primary);
}
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  background: none;
  border: none;
  cursor: pointer;
}
.mobile-menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition-base);
}
.mobile-menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.mobile-menu-toggle.active span:nth-child(2) { opacity: 0; }
.mobile-menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* --- Search Overlay --- */
.search-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2000;
  background: rgba(15, 38, 64, 0.6);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 15vh;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}
.search-overlay.active {
  opacity: 1;
  visibility: visible;
}
.search-form {
  width: 90%;
  max-width: 640px;
  background: var(--color-bg-card);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  padding: var(--space-xl);
  transform: translateY(-20px);
  transition: transform var(--transition-base);
}
.search-overlay.active .search-form {
  transform: translateY(0);
}
.search-input {
  width: 100%;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md) var(--space-lg);
  font-size: 1.1rem;
  font-family: var(--font-body);
  color: var(--color-text);
  background: transparent;
  outline: none;
  transition: border-color var(--transition-fast);
}
.search-input:focus {
  border-color: var(--color-primary);
}
.search-input::placeholder {
  color: var(--color-text-muted);
}
.search-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md) var(--space-xl);
  background: var(--color-primary);
  color: white;
  border: none;
  border-radius: var(--radius-lg);
  font-size: 1rem;
  font-weight: 700;
  font-family: var(--font-body);
  cursor: pointer;
  transition: all var(--transition-fast);
  margin-top: var(--space-md);
}
.search-submit:hover {
  background: var(--color-primary-light);
  transform: translateY(-1px);
}
.search-close {
  position: absolute;
  top: var(--space-lg);
  right: var(--space-lg);
  width: 40px;
  height: 40px;
  border: none;
  background: rgba(0,0,0,0.05);
  color: var(--color-text-muted);
  font-size: 1.5rem;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}
.search-close:hover {
  background: rgba(0,0,0,0.1);
  color: var(--color-text);
}
.search-results {
  margin-top: var(--space-md);
  max-height: 400px;
  overflow-y: auto;
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
  position: relative;
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, var(--color-primary-light) 100%);
  color: white;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(212, 118, 60, 0.2) 0%, transparent 70%);
  border-radius: 50%;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.05) 0%, transparent 70%);
  border-radius: 50%;
}
.hero .container {
  position: relative;
  z-index: 1;
  padding: var(--space-4xl) var(--space-lg);
}
.hero-content {
  max-width: 640px;
  animation: fadeInUp 0.8s ease-out;
}
.hero-title {
  font-size: 3.2rem;
  color: white;
  margin-bottom: var(--space-lg);
  line-height: 1.15;
  letter-spacing: -0.02em;
}
.hero-description {
  font-size: 1.15rem;
  line-height: 1.8;
  opacity: 0.9;
  margin-bottom: var(--space-xl);
  max-width: 560px;
}
.hero-stats {
  display: flex;
  gap: var(--space-2xl);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-xl);
}
.stat-item {
  display: flex;
  flex-direction: column;
}
.stat-number {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-accent-light);
}
.stat-label {
  font-size: 0.85rem;
  opacity: 0.7;
  margin-top: 2px;
}
.hero-actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

/* ============================================
   CATEGORY CHIPS
   ============================================ */
.category-chips-section {
  background: var(--color-bg-card);
  border-bottom: 1px solid var(--color-border-light);
  position: sticky;
  top: var(--header-height);
  z-index: 900;
}
.category-chips {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) 0;
  overflow-x: auto;
  scrollbar-width: none;
}
.category-chips::-webkit-scrollbar { display: none; }
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: var(--space-sm) var(--space-lg);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  white-space: nowrap;
  transition: all var(--transition-fast);
  cursor: pointer;
  background: none;
  font-family: var(--font-body);
}
.chip:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: rgba(26, 60, 94, 0.04);
}
.chip.active {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

/* ============================================
   SECTIONS
   ============================================ */
.section {
  padding: var(--space-3xl) 0;
}
.featured-section {
  padding: var(--space-3xl) 0;
}
.category-section:nth-child(even) {
  background: var(--color-bg-warm);
}
.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-md);
  border-bottom: 2px solid var(--color-border);
  flex-wrap: wrap;
  gap: var(--space-sm);
}
.section-title {
  font-size: 1.8rem;
  letter-spacing: -0.01em;
}
.section-subtitle {
  font-size: 1rem;
  color: var(--color-text-light);
  margin-top: var(--space-xs);
  width: 100%;
  font-family: var(--font-body);
  font-weight: 400;
}
.section-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
}
.section-link:hover {
  color: var(--color-accent);
}

/* ============================================
   ARTICLES GRID & CARDS
   ============================================ */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}
.featured-grid {
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
}

/* Article Card */
.article-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border-light);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
}
.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

/* Card Image */
.article-card-image {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  display: block;
}
.article-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}
.article-card:hover .article-card-image img {
  transform: scale(1.05);
}

/* Category Badge */
.article-category-badge {
  position: absolute;
  top: var(--space-md);
  left: var(--space-md);
  padding: 4px 12px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: 100px;
  color: white;
  z-index: 1;
}

/* Card Content */
.article-card-content {
  padding: var(--space-lg);
  flex: 1;
  display: flex;
  flex-direction: column;
}

/* Card Meta */
.article-card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
  flex-wrap: wrap;
}
.article-date,
.article-author,
.article-read-time {
  display: inline-flex;
  align-items: center;
}
.article-card-meta span + span::before {
  content: '\00b7';
  margin-right: var(--space-sm);
  color: var(--color-text-muted);
}

/* Card Title */
.article-card-title {
  font-size: 1.15rem;
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: var(--space-sm);
  color: var(--color-primary-dark);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.article-card-title a {
  color: inherit;
}
.article-card-title a:hover {
  color: var(--color-accent);
}

/* Card Excerpt */
.article-card-excerpt {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

/* Card Link */
.article-card-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border-light);
  transition: color var(--transition-fast);
}
.article-card-link:hover {
  color: var(--color-accent);
}

/* Featured Card */
.featured-card {
  flex-direction: row;
}
.featured-card .article-card-image {
  aspect-ratio: auto;
  width: 55%;
  flex-shrink: 0;
}
.featured-card .article-card-content {
  justify-content: center;
}
.featured-card .article-card-title {
  font-size: 1.5rem;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md) var(--space-xl);
  font-size: 1rem;
  font-weight: 700;
  font-family: var(--font-body);
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
}
.btn-primary:hover {
  background: var(--color-accent-light);
  border-color: var(--color-accent-light);
  color: white;
  transform: translateY(-1px);
}
.btn-secondary {
  background: transparent;
  color: white;
  border-color: rgba(255, 255, 255, 0.4);
}
.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.7);
  color: white;
  transform: translateY(-1px);
}

/* ============================================
   NEWSLETTER
   ============================================ */
.newsletter {
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  color: white;
  padding: var(--space-3xl) 0;
}
.newsletter-content {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}
.newsletter-title {
  color: white;
  font-size: 1.8rem;
  margin-bottom: var(--space-sm);
}
.newsletter-description {
  opacity: 0.85;
  margin-bottom: var(--space-xl);
}
.newsletter-form {
  display: flex;
  gap: var(--space-sm);
  max-width: 480px;
  margin: 0 auto;
}
.newsletter-input {
  flex: 1;
  padding: var(--space-md) var(--space-lg);
  border: 2px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,0.1);
  color: white;
  font-size: 1rem;
  font-family: var(--font-body);
  outline: none;
  transition: border-color var(--transition-fast);
}
.newsletter-input::placeholder {
  color: rgba(255,255,255,0.5);
}
.newsletter-input:focus {
  border-color: var(--color-accent-light);
}
.newsletter-btn {
  padding: var(--space-md) var(--space-xl);
  background: var(--color-accent);
  color: white;
  border: none;
  border-radius: var(--radius-lg);
  font-size: 1rem;
  font-weight: 700;
  font-family: var(--font-body);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}
.newsletter-btn:hover {
  background: var(--color-accent-light);
  transform: translateY(-1px);
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
  background: var(--color-primary-dark);
  color: rgba(255,255,255,0.7);
  padding: var(--space-3xl) 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
  padding-bottom: var(--space-2xl);
}
.footer-col {
  /* column base */
}
.footer-brand {
  /* brand column */
}
.footer-brand .logo {
  margin-bottom: var(--space-md);
}
.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.7;
  max-width: 300px;
}
.footer-heading {
  color: white;
  font-size: 0.95rem;
  font-family: var(--font-body);
  font-weight: 700;
  margin-bottom: var(--space-md);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.footer-links li {
  margin-bottom: var(--space-sm);
}
.footer-links a {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.6);
  transition: color var(--transition-fast);
}
.footer-links a:hover {
  color: var(--color-accent-light);
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: var(--space-lg) 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
}
.footer-bottom-links {
  display: flex;
  gap: var(--space-lg);
}
.footer-bottom-links a {
  color: rgba(255,255,255,0.5);
  font-size: 0.85rem;
}
.footer-bottom-links a:hover {
  color: var(--color-accent-light);
}

/* ============================================
   ARTICLE PAGE
   ============================================ */
.article-page {
  padding: var(--space-2xl) 0 var(--space-4xl);
}
.article-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}
.category-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: 100px;
  color: white;
  margin-bottom: var(--space-lg);
  text-decoration: none;
}
.category-tag:hover { color: white; opacity: 0.9; }
.article-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
  font-size: 0.9rem;
  color: var(--color-text-muted);
  flex-wrap: wrap;
}
.meta-date,
.meta-author,
.meta-read-time {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.article-header h1 {
  font-size: 2.4rem;
  line-height: 1.2;
  margin-bottom: var(--space-lg);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

/* Featured Image */
.featured-image {
  width: 100%;
  max-width: 900px;
  margin: 0 auto var(--space-2xl);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.featured-image img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}

/* Article Content / Body */
.article-content {
  max-width: var(--max-width-article);
  margin: 0 auto;
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--color-text);
}
.article-content h2 {
  font-size: 1.6rem;
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
}
.article-content h3 {
  font-size: 1.3rem;
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
}
.article-content p {
  margin-bottom: var(--space-lg);
}
.article-content ul,
.article-content ol {
  margin-bottom: var(--space-lg);
  padding-left: var(--space-xl);
}
.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }
.article-content li {
  margin-bottom: var(--space-sm);
}
.article-content blockquote {
  margin: var(--space-xl) 0;
  padding: var(--space-lg) var(--space-xl);
  background: var(--color-bg-warm);
  border-left: 4px solid var(--color-accent);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: italic;
  color: var(--color-text-light);
}
.article-content blockquote p {
  margin-bottom: 0;
}
.article-content strong {
  font-weight: 700;
  color: var(--color-primary-dark);
}
.article-content a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.article-content a:hover {
  color: var(--color-accent-dark);
}
.article-body {
  /* wrapper for article body content */
}

/* Table of Contents */
.table-of-contents {
  background: var(--color-bg-warm);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg) var(--space-xl);
  margin-bottom: var(--space-2xl);
}
.table-of-contents h2 {
  font-size: 1rem;
  margin-bottom: var(--space-md);
  color: var(--color-primary);
  border-bottom: none;
  display: block;
}
.table-of-contents ol {
  list-style: decimal;
  padding-left: var(--space-lg);
}
.table-of-contents li {
  margin-bottom: var(--space-xs);
}
.table-of-contents a {
  font-size: 0.95rem;
  color: var(--color-text);
  text-decoration: none;
}
.table-of-contents a:hover {
  color: var(--color-accent);
}

/* Author Box */
.author-box {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  background: var(--color-bg-warm);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  margin-top: var(--space-2xl);
}
.author-avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  flex-shrink: 0;
  overflow: hidden;
}
.author-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.author-info h3 {
  font-size: 1.1rem;
  font-family: var(--font-body);
  font-weight: 700;
  margin-bottom: 4px;
}
.author-info p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* Article Tags */
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-2xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
  align-items: center;
}
.article-tags h3 {
  font-size: 1rem;
  font-family: var(--font-body);
  font-weight: 700;
  margin-right: var(--space-sm);
  color: var(--color-text);
}
.tags-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}
.tag {
  padding: 4px 14px;
  font-size: 0.82rem;
  font-weight: 600;
  background: var(--color-bg-warm);
  color: var(--color-text-light);
  border-radius: 100px;
  transition: all var(--transition-fast);
  text-decoration: none;
}
.tag:hover {
  background: var(--color-primary);
  color: white;
}

/* Related Articles */
.related-articles {
  padding: var(--space-3xl) 0;
  background: var(--color-bg-warm);
}
.related-articles h2 {
  font-size: 1.5rem;
  margin-bottom: var(--space-xl);
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}
.related-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border-light);
  transition: all var(--transition-base);
}
.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.related-card img {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
}
.related-card-body {
  padding: var(--space-md);
}
.related-card-body h3 {
  font-size: 1rem;
  font-family: var(--font-body);
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: var(--space-sm);
}
.related-card-body h3 a {
  color: var(--color-primary-dark);
}
.related-card-body h3 a:hover {
  color: var(--color-accent);
}
.related-category {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-accent);
}
.related-date {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* ============================================
   CATEGORY PAGE
   ============================================ */
.breadcrumb {
  padding: var(--space-md) 0;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}
.breadcrumb ol,
.breadcrumb ul,
.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  list-style: none;
  padding: 0;
  margin: 0;
}
.breadcrumb li {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}
.breadcrumb li + li::before {
  content: '/';
  color: var(--color-text-muted);
}
.breadcrumb a {
  color: var(--color-text-muted);
}
.breadcrumb a:hover {
  color: var(--color-primary);
}
.breadcrumb li[aria-current="page"] {
  color: var(--color-text);
  font-weight: 600;
}

.category-header {
  padding: var(--space-3xl) 0 var(--space-xl);
  text-align: center;
}
.category-header-content {
  max-width: 640px;
  margin: 0 auto;
}
.category-icon {
  font-size: 3rem;
  display: block;
  margin-bottom: var(--space-md);
}
.category-title {
  font-size: 2.2rem;
  margin-bottom: var(--space-sm);
}
.category-description {
  font-size: 1.05rem;
  color: var(--color-text-light);
  max-width: 600px;
  margin: 0 auto var(--space-md);
}
.article-count {
  display: inline-flex;
  align-items: center;
  padding: 4px 14px;
  font-size: 0.85rem;
  font-weight: 600;
  background: var(--color-bg-warm);
  color: var(--color-text-light);
  border-radius: 100px;
}

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-2xl) 0;
}
.pagination-list {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}
.pagination-item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 var(--space-sm);
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  transition: all var(--transition-fast);
  text-decoration: none;
  cursor: pointer;
  background: none;
  font-family: var(--font-body);
}
a.pagination-item:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: rgba(26, 60, 94, 0.04);
}
.pagination-item.active {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

/* ============================================
   ABOUT PAGE
   ============================================ */
.page-hero {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, var(--color-primary-light) 100%);
  color: white;
  padding: var(--space-3xl) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(212, 118, 60, 0.15) 0%, transparent 70%);
  border-radius: 50%;
}
.page-hero .container {
  position: relative;
  z-index: 1;
}
.page-hero-title {
  font-size: 2.8rem;
  color: white;
  margin-bottom: var(--space-lg);
}
.page-hero-description {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.85);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.8;
}

/* Mission */
.about-mission {
  padding: var(--space-3xl) 0;
}
.about-mission-content {
  max-width: var(--max-width-narrow);
  margin: 0 auto;
}
.about-mission-content h2 {
  margin-bottom: var(--space-lg);
}
.about-mission-content p {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--color-text-light);
  margin-bottom: var(--space-lg);
}

/* Values */
.about-values {
  padding: var(--space-3xl) 0;
  background: var(--color-bg-warm);
}
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}
.value-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-align: center;
  transition: all var(--transition-base);
}
.value-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.value-icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-md);
}
.value-title {
  font-size: 1.2rem;
  margin-bottom: var(--space-sm);
}
.value-description {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* Team */
.about-team {
  padding: var(--space-3xl) 0;
}
.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}
.team-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-align: center;
  transition: all var(--transition-base);
}
.team-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.team-avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  margin: 0 auto var(--space-md);
}
.team-name {
  font-size: 1.15rem;
  margin-bottom: var(--space-xs);
}
.team-role {
  font-size: 0.9rem;
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: var(--space-md);
  font-family: var(--font-body);
}
.team-bio {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* Commitment */
.about-commitment {
  padding: var(--space-3xl) 0;
  background: var(--color-bg-warm);
}
.commitment-content {
  max-width: var(--max-width-narrow);
  margin: 0 auto;
}
.commitment-content h2 {
  margin-bottom: var(--space-lg);
}
.commitment-content p {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--color-text-light);
  margin-bottom: var(--space-lg);
}

/* ============================================
   CONTACT PAGE
   ============================================ */
.contact-section {
  padding: var(--space-3xl) 0;
}
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
}
.contact-form-wrapper h2 {
  margin-bottom: var(--space-lg);
}
.contact-form {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}
.form-group {
  margin-bottom: var(--space-lg);
}
.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}
.form-input {
  width: 100%;
  padding: var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  transition: border-color var(--transition-fast);
}
.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
}
.form-textarea {
  min-height: 150px;
  resize: vertical;
}

/* Contact Info */
.contact-info-wrapper h2 {
  margin-bottom: var(--space-lg);
}
.contact-info {
  background: var(--color-bg-warm);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}
.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}
.contact-info-item:last-child {
  margin-bottom: 0;
}
.contact-info-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
}
.contact-info-item h3 {
  font-size: 1rem;
  font-family: var(--font-body);
  font-weight: 700;
  margin-bottom: 4px;
}
.contact-info-item p,
.contact-info-item a {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

/* FAQ */
.faq-section {
  padding: var(--space-2xl) 0;
}
.faq-list {
  max-width: var(--max-width-narrow);
  margin: 0 auto;
}
.faq-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  margin-bottom: var(--space-md);
  transition: box-shadow var(--transition-fast);
}
.faq-item:hover {
  box-shadow: var(--shadow-sm);
}
.faq-question {
  font-size: 1.1rem;
  font-family: var(--font-body);
  font-weight: 700;
  margin-bottom: var(--space-sm);
  color: var(--color-primary-dark);
}
.faq-answer {
  font-size: 0.95rem;
  color: var(--color-text-light);
  line-height: 1.7;
}
.faq-answer a {
  color: var(--color-accent);
}

/* ============================================
   LEGAL PAGES
   ============================================ */
.legal-page {
  padding: var(--space-3xl) 0 var(--space-4xl);
}
.legal-page h1 {
  font-size: 2.2rem;
  margin-bottom: var(--space-2xl);
  text-align: center;
}
.legal-content {
  max-width: var(--max-width-article);
  margin: 0 auto;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-text);
}
.legal-content h2 {
  font-size: 1.4rem;
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
}
.legal-content p {
  margin-bottom: var(--space-lg);
}
.legal-content ul {
  list-style: disc;
  padding-left: var(--space-xl);
  margin-bottom: var(--space-lg);
}
.legal-content li {
  margin-bottom: var(--space-sm);
}

.legal-text {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: var(--space-xl);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border-light);
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(24px); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* ============================================
   RESPONSIVE - TABLET (max-width: 1024px)
   ============================================ */
@media (max-width: 1024px) {
  .hero .container {
    padding: var(--space-3xl) var(--space-lg);
  }
  .hero-title {
    font-size: 2.6rem;
  }
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .featured-grid {
    grid-template-columns: 1fr;
  }
  .featured-card {
    flex-direction: column;
  }
  .featured-card .article-card-image {
    width: 100%;
    aspect-ratio: 16/10;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
  }
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .values-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .team-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ============================================
   RESPONSIVE - MOBILE (max-width: 768px)
   ============================================ */
@media (max-width: 768px) {
  :root {
    --header-height: 60px;
  }

  /* Mobile: header must not create containing block for fixed nav */
  .site-header {
    position: relative;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    background: var(--color-bg);
  }

  /* Mobile Navigation Overlay */
  .main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-bg);
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-lg);
    gap: var(--space-xs);
    transform: translateX(100%);
    transition: transform var(--transition-base);
    overflow-y: auto;
    z-index: 999;
    box-shadow: -4px 0 20px rgba(0,0,0,0.1);
  }
  .main-nav.active {
    transform: translateX(0);
  }
  .nav-list {
    flex-direction: column;
    align-items: stretch;
  }
  .nav-link {
    padding: var(--space-md);
    font-size: 1.05rem;
  }
  .mobile-menu-toggle {
    display: flex;
  }

  /* Mobile Dropdown */
  .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    border-radius: 0;
    padding: 0;
    padding-left: var(--space-lg);
    display: none;
    background: transparent;
  }
  .nav-dropdown.open .dropdown-menu {
    display: block;
  }

  /* Hero Mobile */
  .hero .container {
    padding: var(--space-2xl) var(--space-lg);
  }
  .hero-title {
    font-size: 2rem;
  }
  .hero-description {
    font-size: 1rem;
  }
  .hero-stats {
    gap: var(--space-lg);
  }
  .stat-number {
    font-size: 1.5rem;
  }
  .hero-actions {
    flex-direction: column;
  }
  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }

  /* Grid Mobile */
  .articles-grid {
    grid-template-columns: 1fr;
  }
  .featured-grid {
    grid-template-columns: 1fr;
  }

  /* Section Header Mobile */
  .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-sm);
  }
  .section-title {
    font-size: 1.5rem;
  }

  /* Article Page Mobile */
  .article-header h1 {
    font-size: 1.8rem;
  }
  .article-meta {
    flex-direction: column;
    gap: var(--space-sm);
  }

  /* Footer Mobile */
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }
  .footer-bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }

  /* Newsletter Mobile */
  .newsletter-form {
    flex-direction: column;
  }
  .newsletter-btn {
    width: 100%;
    justify-content: center;
  }

  /* About Page Mobile */
  .values-grid {
    grid-template-columns: 1fr;
  }
  .team-grid {
    grid-template-columns: 1fr;
  }
  .page-hero-title {
    font-size: 2rem;
  }

  /* Contact Mobile */
  .contact-grid {
    grid-template-columns: 1fr;
  }

  /* Related Grid Mobile */
  .related-grid {
    grid-template-columns: 1fr;
  }

  /* Pagination Mobile */
  .pagination-list {
    flex-wrap: wrap;
  }

  /* Author Box Mobile */
  .author-box {
    flex-direction: column;
    text-align: center;
  }
}

/* ============================================
   RESPONSIVE - SMALL MOBILE (max-width: 480px)
   ============================================ */
@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-md);
  }
  .hero .container {
    padding: var(--space-2xl) var(--space-md);
  }
  .hero-title {
    font-size: 1.7rem;
  }
  .hero-stats {
    flex-direction: column;
    gap: var(--space-md);
  }
  .article-content {
    font-size: 1rem;
  }
  .article-content h2 {
    font-size: 1.35rem;
  }
  .category-title {
    font-size: 1.8rem;
  }
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
  .site-header,
  .site-footer,
  .newsletter,
  .search-overlay,
  .mobile-menu-toggle,
  .category-chips-section,
  .related-articles,
  .article-tags,
  .hero-actions,
  .pagination {
    display: none !important;
  }
  body {
    color: #000;
    background: #fff;
  }
  .article-content {
    max-width: 100%;
  }
}