/* ============================================================
   OpoIku.com - Professional News Portal Stylesheet
   Clean, Modern, Minimalist Design
   ============================================================ */

/* Font loaded via preload in HTML head for performance - no @import needed */

/* ============== CSS Variables ============== */
:root {
  /* Colors - Neutral palette with subtle accents */
  --color-primary: #1a5f7a;
  --color-primary-dark: #134559;
  --color-primary-light: #e8f4f8;
  --color-accent: #c44536;
  --color-accent-light: #d66b5b;
  
  /* Neutrals */
  --color-black: #1a1a1a;
  --color-gray-900: #2d2d2d;
  --color-gray-800: #3d3d3d;
  --color-gray-700: #4a4a4a;
  --color-gray-600: #6b6b6b;
  --color-gray-500: #6b6b6b;
  --color-gray-400: #7a7a7a;
  --color-gray-300: #d4d4d4;
  --color-gray-200: #e5e5e5;
  --color-gray-100: #f5f5f5;
  --color-white: #ffffff;
  
  /* Semantic colors */
  --color-success: #2d8a4e;
  --color-warning: #d4a72c;
  --color-error: #c44536;
  --color-info: #1a5f7a;
  
  /* Typography */
  --font-display: 'Source Serif 4', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  
  /* Font sizes */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  
  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.12);
  
  /* Borders */
  --border-radius-sm: 0.375rem;
  --border-radius-md: 0.5rem;
  --border-radius-lg: 0.75rem;
  --border-radius-xl: 1rem;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
  
  /* Layout */
  --min-touch-target: 44px;
  --container-max: 1200px;
  --content-max: 720px;
}

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

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

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-gray-800);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============== Typography ============== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-black);
}

h1 { font-size: var(--text-3xl); margin-bottom: var(--space-4); }
h2 { font-size: var(--text-2xl); margin-bottom: var(--space-3); }
h3 { font-size: var(--text-xl); margin-bottom: var(--space-3); }
h4 { font-size: var(--text-lg); margin-bottom: var(--space-2); }

@media (min-width: 768px) {
  h1 { font-size: var(--text-4xl); }
  h2 { font-size: var(--text-3xl); }
  h3 { font-size: var(--text-2xl); }
}

p {
  margin-bottom: var(--space-4);
  color: var(--color-gray-700);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

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

/* Lazy loading images */
img[loading="lazy"] {
  opacity: 0;
  transition: opacity var(--transition-base);
}

img[loading="lazy"].loaded,
img.loaded {
  opacity: 1;
}

/* ============== Layout ============== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--space-6);
  }
}

/* ============== Reading Progress Bar ============== */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  z-index: 9999;
  transition: width 50ms linear;
}

/* ============== Navbar ============== */
.navbar {
  background: var(--color-white);
  border-bottom: 1px solid var(--color-gray-200);
  padding: var(--space-3) 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.97);
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-xl);
  color: var(--color-primary) !important;
}

.navbar-brand img {
  height: 36px;
  width: auto;
}

.navbar-brand span {
  display: none;
}

@media (min-width: 576px) {
  .navbar-brand span {
    display: inline;
  }
}

.nav-link {
  font-weight: 500;
  font-size: var(--text-sm);
  color: var(--color-gray-700) !important;
  padding: var(--space-2) var(--space-3) !important;
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-fast);
  min-height: var(--min-touch-target);
  display: flex;
  align-items: center;
}

.nav-link:hover,
.nav-link:focus {
  color: var(--color-primary) !important;
  background-color: var(--color-gray-100);
}

.nav-link.active {
  color: var(--color-primary) !important;
  background-color: rgba(26, 95, 122, 0.08);
}

/* Dropdown */
.dropdown-menu {
  border: 1px solid var(--color-gray-200);
  box-shadow: var(--shadow-lg);
  border-radius: var(--border-radius-md);
  padding: var(--space-2) 0;
  min-width: 180px;
  margin-top: var(--space-2);
}

.dropdown-item {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-gray-700);
  min-height: var(--min-touch-target);
  display: flex;
  align-items: center;
  transition: all var(--transition-fast);
}

.dropdown-item:hover,
.dropdown-item:focus {
  background-color: var(--color-gray-100);
  color: var(--color-primary);
}

/* Mobile navbar */
@media (max-width: 991.98px) {
  .navbar-nav {
    padding: var(--space-4) 0;
    border-top: 1px solid var(--color-gray-200);
    margin-top: var(--space-3);
  }
  
  .navbar-nav .dropdown-menu {
    position: static !important;
    transform: none !important;
    border: none;
    box-shadow: none;
    background-color: var(--color-gray-100);
    margin: var(--space-2) 0;
    border-radius: var(--border-radius-sm);
  }
  
  .navbar-toggler {
    border: 1px solid var(--color-gray-300);
    padding: var(--space-2);
    min-width: var(--min-touch-target);
    min-height: var(--min-touch-target);
  }
  
  .navbar-toggler:focus {
    box-shadow: none;
    border-color: var(--color-primary);
  }
}

/* ============== Search ============== */
.search-container {
  position: relative;
  width: 100%;
  max-width: 320px;
}

.search-input {
  width: 100%;
  padding: var(--space-2) var(--space-4) var(--space-2) 2.5rem;
  border: 1px solid var(--color-gray-300);
  border-radius: 100px;
  font-size: var(--text-sm);
  background-color: var(--color-gray-100);
  min-height: var(--min-touch-target);
  transition: all var(--transition-fast);
}

.search-input:focus {
  outline: none;
  border-color: var(--color-primary);
  background-color: var(--color-white);
  box-shadow: 0 0 0 3px rgba(26, 95, 122, 0.1);
}

.search-icon {
  position: absolute;
  left: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-gray-500);
  font-size: var(--text-sm);
  pointer-events: none;
}

.search-results {
  position: absolute;
  top: calc(100% + var(--space-2));
  left: 0;
  right: 0;
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-xl);
  max-height: 400px;
  overflow-y: auto;
  z-index: 1050;
  display: none;
}

.search-results.show {
  display: block;
}

.search-result-item {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-gray-100);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.search-result-item:last-child {
  border-bottom: none;
}

.search-result-item:hover {
  background-color: var(--color-gray-100);
}

.search-result-title {
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--color-black);
  margin-bottom: var(--space-1);
}

.search-result-excerpt {
  font-size: var(--text-xs);
  color: var(--color-gray-600);
  margin: 0;
  line-height: 1.5;
}

@media (max-width: 991.98px) {
  .search-container {
    max-width: 100%;
    margin: var(--space-3) 0;
  }
}

/* ============== Hero Section ============== */
.hero-section {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  padding: var(--space-10) 0;
  text-align: center;
}

.hero-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  margin-bottom: var(--space-3);
  color: var(--color-white);
}

.hero-subtitle {
  font-size: var(--text-base);
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.6;
}

@media (min-width: 768px) {
  .hero-section {
    padding: var(--space-16) 0;
  }
  
  .hero-title {
    font-size: var(--text-4xl);
  }
  
  .hero-subtitle {
    font-size: var(--text-lg);
  }
}

/* ============== Featured Article ============== */
.featured-article {
  position: relative;
  border-radius: var(--border-radius-xl);
  overflow: hidden;
  min-height: 300px;
  background-size: cover;
  background-position: center;
  background-color: var(--color-gray-800);
}

.featured-article-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.85) 0%, rgba(0, 0, 0, 0.3) 60%, rgba(0, 0, 0, 0.1) 100%);
}

.featured-article-content {
  position: relative;
  z-index: 2;
  padding: var(--space-6);
  color: var(--color-white);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 300px;
}

.featured-article-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: var(--space-3);
  line-height: 1.35;
}

.featured-article-title a {
  color: var(--color-white);
  transition: opacity var(--transition-fast);
}

.featured-article-title a:hover {
  opacity: 0.85;
}

@media (min-width: 768px) {
  .featured-article {
    min-height: 420px;
  }
  
  .featured-article-content {
    padding: var(--space-8);
    min-height: 420px;
  }
  
  .featured-article-title {
    font-size: var(--text-3xl);
  }
}

/* ============== Section Headers ============== */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--color-gray-200);
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  margin: 0;
  color: var(--color-black);
}

.section-link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.section-link:hover {
  color: var(--color-primary-dark);
}

/* ============== Article Cards ============== */
.article-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  height: 100%;
  transition: all var(--transition-base);
}

.article-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: var(--color-gray-300);
}

.article-card .card-img-wrapper {
  overflow: hidden;
  aspect-ratio: 16/10;
  background-color: var(--color-gray-200);
}

.article-card .card-img-top {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

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

.article-card .card-body {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
}

.article-card .card-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-base);
  line-height: 1.45;
  margin-bottom: var(--space-2);
}

.article-card .card-title a {
  color: var(--color-black);
  transition: color var(--transition-fast);
}

.article-card .card-title a:hover {
  color: var(--color-primary);
}

.article-card .card-text {
  color: var(--color-gray-600);
  font-size: var(--text-sm);
  line-height: 1.6;
  flex-grow: 1;
  margin-bottom: var(--space-3);
}

.article-meta {
  font-size: var(--text-xs);
  color: var(--color-gray-500);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-gray-100);
}

.article-meta i {
  margin-right: var(--space-1);
  color: var(--color-gray-400);
}

/* Category Badge */
.category-badge {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--border-radius-sm);
  background-color: var(--color-primary);
  color: var(--color-white);
  margin-bottom: var(--space-2);
}

.category-badge:hover {
  background-color: var(--color-primary-dark);
  color: var(--color-white);
}

/* ============== Category Filter ============== */
.category-filter {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-2);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.category-filter::-webkit-scrollbar {
  display: none;
}

.category-filter .btn {
  border-radius: 100px;
  padding: var(--space-2) var(--space-4);
  font-weight: 500;
  font-size: var(--text-sm);
  white-space: nowrap;
  min-height: var(--min-touch-target);
  border: 1px solid var(--color-gray-300);
  background-color: var(--color-white);
  color: var(--color-gray-700);
  transition: all var(--transition-fast);
}

.category-filter .btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background-color: rgba(26, 95, 122, 0.05);
}

.category-filter .btn.active {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

/* ============== Article Detail ============== */
.article-header {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  padding: var(--space-12) 0 var(--space-8);
  position: relative;
  overflow: hidden;
  background-size: cover;
  background-position: center;
}

.article-header-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  z-index: 0;
}

.article-header-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.85) 0%, rgba(0,0,0,0.5) 50%, rgba(0,0,0,0.3) 100%);
}

.article-header .container {
  position: relative;
  z-index: 1;
}

.article-header h1 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: var(--space-4);
  color: var(--color-white);
  text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.article-header .badge,
.article-header .category-badge {
  text-shadow: none;
}

.article-header .article-meta {
  color: rgba(255, 255, 255, 0.85);
  border-top: none;
  padding-top: 0;
}

.article-header .article-meta i {
  color: rgba(255, 255, 255, 0.7);
}

.article-header .d-flex span {
  color: rgba(255, 255, 255, 0.85);
}

.article-header .d-flex span i {
  color: rgba(255, 255, 255, 0.7);
}

@media (min-width: 768px) {
  .article-header {
    padding: var(--space-16) 0 var(--space-10);
  }
  
  .article-header h1 {
    font-size: var(--text-4xl);
    max-width: 800px;
  }
}

/* Article Content */
.article-content {
  font-size: var(--text-base);
  line-height: 1.85;
  color: var(--color-gray-800);
}

.article-content h2 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  margin-top: var(--space-8);
  margin-bottom: var(--space-4);
  color: var(--color-black);
  padding-bottom: var(--space-2);
  border-bottom: 2px solid var(--color-primary-light);
}

.article-content h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-top: var(--space-6);
  margin-bottom: var(--space-3);
  color: var(--color-gray-900);
}

.article-content p {
  margin-bottom: var(--space-4);
}

.article-content blockquote {
  border-left: 4px solid var(--color-primary);
  padding: var(--space-5) var(--space-6);
  margin: var(--space-6) 0;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-gray-100));
  border-radius: 0 var(--border-radius-lg) var(--border-radius-lg) 0;
  font-style: italic;
  color: var(--color-gray-700);
  position: relative;
}

.article-content blockquote::before {
  content: '\201C';
  font-family: var(--font-display);
  font-size: 4rem;
  color: var(--color-primary);
  opacity: 0.2;
  position: absolute;
  top: -10px;
  left: 12px;
  line-height: 1;
}

.article-content ul,
.article-content ol {
  margin-bottom: var(--space-4);
  padding-left: var(--space-6);
}

.article-content li {
  margin-bottom: var(--space-2);
}

.article-content .lead {
  font-size: var(--text-lg);
  color: var(--color-gray-700);
  line-height: 1.75;
  margin-bottom: var(--space-6);
  font-weight: 400;
}

.article-content figure {
  margin: var(--space-6) 0;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
}

.article-content figure img {
  border-radius: var(--border-radius-lg);
}

.article-content figcaption {
  font-size: var(--text-sm);
  color: var(--color-gray-500);
  margin-top: var(--space-2);
  text-align: center;
}

@media (min-width: 768px) {
  .article-content {
    font-size: var(--text-lg);
  }
  
  .article-content h2 {
    font-size: var(--text-2xl);
  }
  
  .article-content h3 {
    font-size: var(--text-xl);
  }
}

/* ============== Author Box ============== */
.author-box {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-5);
  background: var(--color-gray-100);
  border-radius: var(--border-radius-lg);
  margin: var(--space-8) 0;
  border-left: 4px solid var(--color-primary);
}

.author-box .author-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--text-xl);
  flex-shrink: 0;
}

.author-box .author-name {
  font-weight: 600;
  font-size: var(--text-base);
  color: var(--color-black);
  margin-bottom: var(--space-1);
}

.author-box .author-bio {
  font-size: var(--text-sm);
  color: var(--color-gray-600);
  margin: 0;
}

/* ============== Social Share ============== */
.share-buttons {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  padding: var(--space-4) 0;
  border-top: 1px solid var(--color-gray-200);
  border-bottom: 1px solid var(--color-gray-200);
  margin: var(--space-6) 0;
}

.share-buttons .share-label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-gray-700);
  display: flex;
  align-items: center;
  margin-right: var(--space-2);
}

.share-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--color-gray-300);
  color: var(--color-gray-600);
  background: var(--color-white);
  transition: all var(--transition-fast);
  font-size: var(--text-base);
}

.share-btn:hover {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

/* ============== Sidebar ============== */
.sidebar-widget {
  background: var(--color-gray-100);
  border-radius: var(--border-radius-lg);
  padding: var(--space-5);
  margin-bottom: var(--space-5);
}

.sidebar-widget-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-base);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--color-primary);
  color: var(--color-black);
}

.sticky-sidebar {
  position: sticky;
  top: 80px;
}

/* ============== Ad Placeholders ============== */
.ad-placeholder {
  background: var(--color-gray-100);
  border: 2px dashed var(--color-gray-300);
  border-radius: var(--border-radius-md);
  padding: var(--space-8);
  text-align: center;
  margin: var(--space-6) 0;
  min-height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ad-placeholder-text {
  font-size: var(--text-xs);
  color: var(--color-gray-500);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* ============== Breadcrumb ============== */
.breadcrumb {
  margin: 0;
  padding: 0;
  background: transparent;
  font-size: var(--text-sm);
}

.breadcrumb-item a {
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition-fast);
}

.breadcrumb-item a:hover {
  color: var(--color-white);
}

.breadcrumb-item.active {
  color: rgba(255, 255, 255, 0.9);
}

.breadcrumb-item + .breadcrumb-item::before {
  color: rgba(255, 255, 255, 0.5);
}

/* ============== Back to Top ============== */
.back-to-top {
  position: fixed;
  bottom: var(--space-5);
  right: var(--space-5);
  width: var(--min-touch-target);
  height: var(--min-touch-target);
  border-radius: 50%;
  background-color: var(--color-primary);
  color: var(--color-white);
  border: none;
  box-shadow: var(--shadow-lg);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  z-index: 1040;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-lg);
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-3px);
}

@media (min-width: 768px) {
  .back-to-top {
    bottom: var(--space-8);
    right: var(--space-8);
    width: 52px;
    height: 52px;
  }
}

/* ============== Footer ============== */
.footer {
  background-color: var(--color-gray-900);
  color: var(--color-white);
  padding: var(--space-10) 0 var(--space-6);
  margin-top: var(--space-12);
}

.footer-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-base);
  margin-bottom: var(--space-4);
  color: var(--color-white);
}

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

.footer-links li {
  margin-bottom: var(--space-2);
}

.footer-links a {
  color: var(--color-gray-400);
  font-size: var(--text-sm);
  transition: color var(--transition-fast);
  display: inline-block;
  padding: var(--space-1) 0;
}

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

.footer-bottom {
  border-top: 1px solid var(--color-gray-700);
  margin-top: var(--space-8);
  padding-top: var(--space-5);
  text-align: center;
  color: var(--color-gray-500);
  font-size: var(--text-sm);
}

.footer .social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--color-gray-800);
  color: var(--color-gray-400);
  transition: all var(--transition-fast);
  font-size: var(--text-lg);
}

.footer .social-link:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
}

@media (min-width: 768px) {
  .footer {
    padding: var(--space-12) 0 var(--space-6);
    margin-top: var(--space-16);
  }
}

/* ============== Cookie Consent ============== */
.cookie-consent {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--color-gray-900);
  color: var(--color-white);
  padding: var(--space-4);
  z-index: 9999;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.2);
  transform: translateY(100%);
  transition: transform var(--transition-slow);
}

.cookie-consent.show {
  transform: translateY(0);
}

.cookie-text {
  font-size: var(--text-sm);
  line-height: 1.5;
  color: var(--color-gray-300);
}

.cookie-text a {
  color: var(--color-warning);
  text-decoration: underline;
}

.cookie-consent .btn {
  min-width: 80px;
  min-height: var(--min-touch-target);
}

@media (max-width: 767.98px) {
  .cookie-consent .d-flex {
    flex-direction: column;
    gap: var(--space-3) !important;
  }
  
  .cookie-consent .btn {
    width: 100%;
  }
}

/* ============== Category Page ============== */
.category-header {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  padding: var(--space-10) 0;
}

.category-header h1 {
  font-family: var(--font-display);
  color: var(--color-white);
  margin-bottom: var(--space-2);
}

/* ============== Table of Contents ============== */
.toc-widget {
  background: var(--color-primary-light);
  border-radius: var(--border-radius-lg);
  padding: var(--space-5);
  margin-bottom: var(--space-5);
  border: 1px solid rgba(26, 95, 122, 0.1);
}

.toc-widget .toc-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-primary-dark);
  margin-bottom: var(--space-3);
}

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

.toc-widget .toc-list li {
  margin-bottom: var(--space-2);
}

.toc-widget .toc-list a {
  font-size: var(--text-sm);
  color: var(--color-gray-700);
  display: block;
  padding: var(--space-1) 0;
  border-left: 2px solid transparent;
  padding-left: var(--space-3);
  transition: all var(--transition-fast);
}

.toc-widget .toc-list a:hover,
.toc-widget .toc-list a.active {
  color: var(--color-primary);
  border-left-color: var(--color-primary);
}

/* ============== Utilities ============== */
.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.line-clamp-3 {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.object-cover {
  object-fit: cover;
}

/* ============== Accessibility ============== */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space-4);
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--border-radius-sm);
  z-index: 10000;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-4);
  color: var(--color-white);
}

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

/* ============== Touch Optimizations ============== */
@media (pointer: coarse) {
  .btn,
  .nav-link,
  .dropdown-item {
    min-height: var(--min-touch-target);
  }
}

/* ============== Safe Area ============== */
@supports (padding: max(0px)) {
  .navbar {
    padding-left: max(var(--space-4), env(safe-area-inset-left));
    padding-right: max(var(--space-4), env(safe-area-inset-right));
  }
  
  .footer {
    padding-bottom: max(var(--space-6), env(safe-area-inset-bottom));
  }
  
  .cookie-consent {
    padding-bottom: max(var(--space-4), env(safe-area-inset-bottom));
  }
  
  .back-to-top {
    right: max(var(--space-5), calc(env(safe-area-inset-right) + var(--space-2)));
    bottom: max(var(--space-5), calc(env(safe-area-inset-bottom) + var(--space-2)));
  }
}

/* ============== Reduced Motion ============== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  
  .article-card:hover {
    transform: none;
  }
  
  .article-card:hover .card-img-top {
    transform: none;
  }
}

/* ============== Print ============== */
@media print {
  .navbar,
  .footer,
  .back-to-top,
  .search-container,
  .cookie-consent,
  .ad-placeholder,
  .reading-progress,
  .share-buttons {
    display: none !important;
  }
  
  .article-content {
    font-size: 11pt;
  }
}

/* ============== Loading Skeleton ============== */
.skeleton {
  background: linear-gradient(90deg, var(--color-gray-200) 25%, var(--color-gray-100) 50%, var(--color-gray-200) 75%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
  border-radius: var(--border-radius-sm);
}

@keyframes loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ============== Category Card Link (Homepage) ============== */
.category-card-link {
  transition: all var(--transition-base);
  border: 1px solid var(--color-gray-200);
}

.category-card-link:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}