/**
 * @file 主样式文件 - 暗黑现代风格
 * @author 前端川
 * @link www.cggg.cn
 * @description 服务器资讯平台 - 蓝橙配色现代设计
 */

:root {
  --primary-color: #0ea5e9;
  --primary-dark: #0284c7;
  --primary-light: #38bdf8;
  --secondary-color: #f97316;
  --accent-color: #eab308;
  --danger-color: #ef4444;
  --success-color: #22c55e;
  --warning-color: #f59e0b;
  
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --bg-card: #1e293b;
  --bg-hover: #334155;
  --bg-gradient: linear-gradient(135deg, #0ea5e9 0%, #f97316 100%);
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --border-color: #334155;
  --border-light: #475569;
  --border-gradient: linear-gradient(135deg, #0ea5e9 0%, #f97316 100%);
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -4px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 30px rgba(14, 165, 233, 0.3);
  
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 18px;
  --radius-2xl: 24px;
  --radius-full: 9999px;
  
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 350ms ease;
  
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

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

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

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

.container {
  width: 100%;
  max-width: 1600px;
  margin: 0 auto;
  padding: 0 24px;
}

.header {
  background: rgba(15, 23, 42, 0.95);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.header-container {
  max-width: 1600px;
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.header-left {
  display: flex;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-primary);
  font-weight: 800;
  font-size: 24px;
  transition: transform var(--transition-fast);
}

.logo:hover {
  color: var(--text-primary);
  transform: scale(1.02);
}

.logo-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: var(--bg-gradient);
  border-radius: var(--radius-lg);
  color: white;
  box-shadow: var(--shadow-md);
}

.logo-text {
  background: var(--bg-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 900;
}

.header-nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: 6px;
}

.nav-link {
  display: flex;
  align-items: center;
  padding: 10px 18px;
  color: var(--text-secondary);
  font-weight: 600;
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
  font-size: 15px;
}

.nav-link:hover {
  color: var(--text-primary);
  background: var(--bg-tertiary);
}

.nav-link.active {
  color: white;
  background: var(--bg-gradient);
}

.mobile-menu-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  color: var(--text-primary);
  cursor: pointer;
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.mobile-menu-btn:hover {
  background: var(--bg-tertiary);
}

.mobile-nav {
  display: none;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 16px 24px;
}

.mobile-nav.active {
  display: block;
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  list-style: none;
}

.mobile-nav-link {
  display: block;
  padding: 12px 16px;
  color: var(--text-secondary);
  font-weight: 600;
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.mobile-nav-link:hover {
  color: var(--text-primary);
  background: var(--bg-tertiary);
}

.nav-link-highlight {
  position: relative;
  color: var(--primary-light) !important;
}

.nav-link-highlight::after {
  content: '';
  position: absolute;
  bottom: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 6px;
  height: 6px;
  background: var(--bg-gradient);
  border-radius: 50%;
  opacity: 0.8;
}

.nav-link-highlight:hover {
  background: var(--bg-tertiary);
  color: var(--primary-color) !important;
}

.nav-link-highlight.active {
  background: var(--bg-gradient);
  color: white !important;
}

.nav-link-highlight.active::after {
  display: none;
}

.mobile-nav-highlight {
  color: var(--primary-light) !important;
}

.mobile-nav-highlight::before {
  content: '★';
  margin-right: 6px;
  font-size: 12px;
}

.mobile-nav-highlight:hover {
  background: var(--bg-tertiary);
  color: var(--primary-color) !important;
}

.main-content {
  min-height: calc(100vh - 72px);
}

.hero-section {
  position: relative;
  padding: 100px 0 120px;
  overflow: hidden;
  background: linear-gradient(180deg, rgba(14, 165, 233, 0.1) 0%, transparent 60%);
  z-index: 1;
}

.hero-pattern {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle at 20% 80%, rgba(14, 165, 233, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(249, 115, 22, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.hero-wrapper {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-left {
  max-width: 600px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(14, 165, 233, 0.1);
  border: 1px solid rgba(14, 165, 233, 0.3);
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  color: var(--primary-light);
  margin-bottom: 24px;
}

.tag-dot {
  width: 8px;
  height: 8px;
  background: var(--primary-color);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.hero-title {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 20px;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.gradient-text {
  background: var(--bg-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 48px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: var(--bg-gradient);
  color: white;
  border-radius: var(--radius-full);
  font-size: 16px;
  font-weight: 700;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-full);
  font-size: 16px;
  font-weight: 700;
  transition: all var(--transition-normal);
}

.btn-secondary:hover {
  color: var(--text-primary);
  border-color: var(--primary-color);
  background: var(--bg-hover);
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 32px;
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-size: 32px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.stat-label {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 500;
}

.stat-divider {
  width: 1px;
  height: 48px;
  background: var(--border-color);
}

.hero-right {
  position: relative;
  height: 400px;
}

.hero-card {
  position: absolute;
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  padding: 24px;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--border-color);
  transition: all var(--transition-normal);
}

.hero-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 34px -8px rgba(0, 0, 0, 0.15);
}

.hero-card-1 {
  top: 0;
  right: 0;
  animation: float1 6s ease-in-out infinite;
}

.hero-card-2 {
  top: 120px;
  left: 0;
  animation: float2 6s ease-in-out infinite 1s;
}

.hero-card-3 {
  bottom: 0;
  right: 40px;
  animation: float3 6s ease-in-out infinite 2s;
}

@keyframes float1 {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

@keyframes float2 {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(12px); }
}

@keyframes float3 {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.card-icon {
  font-size: 40px;
  margin-bottom: 12px;
}

.card-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.card-desc {
  font-size: 14px;
  color: var(--text-secondary);
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 40px;
}

.section-head.center {
  justify-content: center;
  text-align: center;
}

.head-left {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.section-label {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  background: linear-gradient(135deg, rgba(14, 165, 233, 0.15) 0%, rgba(249, 115, 22, 0.15) 100%);
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 700;
  color: var(--primary-light);
  width: fit-content;
}

.section-head.center .section-label {
  margin: 0 auto;
}

.section-title {
  font-size: 32px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.see-all {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 14px;
  transition: all var(--transition-fast);
}

.see-all:hover {
  color: var(--primary-color);
}

.trending-section {
  padding: 80px 0;
}

.trending-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 32px;
}

.trending-main {
  position: relative;
  background: var(--bg-card);
  border-radius: var(--radius-2xl);
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-md);
}

.trending-main:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.trending-link {
  display: block;
  color: var(--text-primary);
  height: 100%;
}

.trending-badge {
  position: absolute;
  top: 20px;
  right: 20px;
  padding: 8px 18px;
  background: var(--bg-gradient);
  color: white;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 700;
  z-index: 1;
  box-shadow: var(--shadow-md);
}

.trending-content {
  padding: 32px 36px 36px;
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 340px;
}

.trending-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.meta-tag {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  color: white;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 700;
}

.meta-game {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 600;
}

.trending-title {
  font-size: 28px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 16px;
}

.trending-text {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
}

.trending-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
}

.trending-type {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 600;
}

.read-more {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--primary-color);
  font-weight: 700;
  font-size: 14px;
}

.trending-side {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.trending-item {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: all var(--transition-normal);
}

.trending-item:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-lg);
}

.item-link {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  color: var(--text-primary);
}

.item-index {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  height: 44px;
  background: var(--bg-gradient);
  color: white;
  border-radius: var(--radius-lg);
  font-weight: 800;
  font-size: 18px;
}

.item-info {
  flex: 1;
  min-width: 0;
}

.item-cat {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 6px;
}

.item-title {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 6px;
}

.item-game {
  display: inline-block;
  font-size: 13px;
  color: var(--text-muted);
}

.categories-section {
  padding: 80px 0;
  background: var(--bg-secondary);
}

.categories-wrap {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.category-box {
  position: relative;
  background: var(--bg-card);
  border-radius: var(--radius-2xl);
  border: 1px solid var(--border-color);
  padding: 32px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  transition: all var(--transition-normal);
  overflow: hidden;
}

.category-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--border-gradient);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.category-box:hover::before {
  opacity: 1;
}

.category-box:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.box-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  margin-bottom: 20px;
  transition: transform var(--transition-normal);
}

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

.box-icon.bg-1 {
  background: linear-gradient(135deg, #0ea5e9 0%, #0284c7 100%);
}

.box-icon.bg-2 {
  background: linear-gradient(135deg, #f97316 0%, #ea580c 100%);
}

.box-icon.bg-3 {
  background: linear-gradient(135deg, #eab308 0%, #ca8a04 100%);
}

.box-icon.bg-4 {
  background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
}

.box-content h3 {
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 6px;
}

.box-content p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
}

.box-arrow {
  position: absolute;
  bottom: 24px;
  right: 24px;
  width: 40px;
  height: 40px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  opacity: 0;
  transform: translateX(-10px);
  transition: all var(--transition-normal);
}

.category-box:hover .box-arrow {
  opacity: 1;
  transform: translateX(0);
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.articles-section {
  padding: 80px 0;
}

.articles-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.article-card {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: all var(--transition-normal);
}

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

.article-link {
  display: block;
  color: var(--text-primary);
  height: 100%;
}

.card-body {
  padding: 28px;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.card-tags {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
}

.tag-category {
  display: inline-block;
  padding: 5px 12px;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  color: white;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 700;
}

.tag-type {
  display: inline-block;
  padding: 5px 12px;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 600;
}

.card-title {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 12px;
}

.card-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
}

.card-game {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 600;
}

.card-footer svg {
  color: var(--text-muted);
  transition: all var(--transition-fast);
}

.article-card:hover .card-footer svg {
  color: var(--primary-color);
  transform: translateX(4px);
}

.banner-section {
  padding: 80px 0;
}

.banner-wrap {
  background: var(--bg-gradient);
  border-radius: var(--radius-2xl);
  padding: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  position: relative;
  overflow: hidden;
}

.banner-wrap::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.15) 0%, transparent 50%);
  pointer-events: none;
}

.banner-content {
  position: relative;
  z-index: 1;
}

.banner-icon {
  font-size: 48px;
  margin-bottom: 16px;
}

.banner-title {
  font-size: 32px;
  font-weight: 800;
  color: white;
  margin-bottom: 8px;
}

.banner-text {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.9);
}

.banner-btn {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 16px 36px;
  background: white;
  color: var(--primary-dark);
  border-radius: var(--radius-lg);
  font-size: 16px;
  font-weight: 700;
  transition: all var(--transition-normal);
}

.banner-btn:hover {
  color: var(--primary-dark);
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 64px 0 32px;
}

.footer-container {
  max-width: 1600px;
  margin: 0 auto;
  padding: 0 24px;
}

.footer-main {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-section h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.footer-desc {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
}

.footer-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tech-tag {
  padding: 6px 14px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
}

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

.footer-links a {
  color: var(--text-secondary);
  font-size: 14px;
  transition: all var(--transition-fast);
}

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

.footer-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-features li {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-secondary);
  font-size: 14px;
}

.footer-features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.feature-item:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateX(4px);
}

.feature-item .feature-icon {
  font-size: 18px;
  flex-shrink: 0;
}

.feature-item .feature-text {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}

.friend-links-section {
  padding: 24px 0;
  border-top: 1px solid var(--border-color);
  margin-top: 24px;
}

.friend-links-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.friend-links-title::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 14px;
  background: var(--bg-gradient);
  border-radius: 2px;
}

.friend-links-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.friend-link-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 13px;
  text-decoration: none;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.friend-link-item:hover {
  background: var(--bg-hover);
  color: var(--primary-color);
  border-color: var(--primary-color);
  transform: translateY(-2px);
}

.friend-link-name {
  white-space: nowrap;
}

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.copyright {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-muted);
  font-size: 14px;
}

.copyright-divider {
  color: var(--border-color);
}

.copyright-link {
  color: var(--primary-color);
  font-weight: 600;
}

.footer-links-bottom {
  display: flex;
  align-items: center;
  gap: 24px;
}

.footer-links-bottom a {
  color: var(--text-muted);
  font-size: 14px;
  transition: all var(--transition-fast);
}

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

.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  background: var(--bg-gradient);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-normal);
  z-index: 90;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.empty-state {
  text-align: center;
  padding: 80px 24px;
  color: var(--text-secondary);
}

@media (max-width: 1200px) {
  .categories-wrap {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .trending-grid {
    grid-template-columns: 1fr;
  }
  
  .trending-side {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
  }
  
  .hero-wrapper {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .hero-right {
    height: 300px;
  }
}

@media (max-width: 968px) {
  .header-nav {
    display: none;
  }
  
  .mobile-menu-btn {
    display: flex;
  }
  
  .mobile-nav.active {
    display: block;
  }
  
  .hero-title {
    font-size: 42px;
  }
  
  .articles-list {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-main {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .banner-wrap {
    flex-direction: column;
    text-align: center;
    padding: 40px;
  }
  
  .trending-side {
    grid-template-columns: 1fr;
  }
  
  .hero-right {
    display: none;
  }
}

@media (max-width: 640px) {
  .container {
    padding: 0 16px;
  }
  
  .header-container {
    padding: 0 16px;
  }
  
  .hero-title {
    font-size: 32px;
  }
  
  .hero-desc {
    font-size: 16px;
  }
  
  .section-title {
    font-size: 24px;
  }
  
  .hero-actions {
    flex-direction: column;
  }
  
  .btn-primary, .btn-secondary {
    width: 100%;
    justify-content: center;
  }
  
  .hero-stats {
    flex-wrap: wrap;
    gap: 24px;
  }
  
  .stat-divider {
    display: none;
  }
  
  .articles-list {
    grid-template-columns: 1fr;
  }
  
  .categories-wrap {
    grid-template-columns: 1fr;
  }
  
  .footer-main {
    grid-template-columns: 1fr;
  }
  
  .footer-features-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  
  .trending-content {
    padding: 28px;
  }
  
  .trending-title {
    font-size: 22px;
  }
  
  .back-to-top {
    right: 16px;
    bottom: 16px;
  }
}