/* 虫虫漫画网 - 全局样式 */
/* 基于百度SEO优化，快速加载，移动端适配 */

/* CSS变量定义 - 漫画风格配色 */
:root {
  --primary-color: #FF6B35;
  --primary-dark: #E85A2A;
  --secondary-color: #4ECDC4;
  --accent-color: #FFE66D;
  --dark-bg: #1A1A2E;
  --darker-bg: #16162A;
  --card-bg: #252542;
  --text-primary: #FFFFFF;
  --text-secondary: #B8B8D1;
  --text-muted: #7A7A9D;
  --border-color: #3A3A5C;
  --gradient-primary: linear-gradient(135deg, #FF6B35 0%, #F7931E 100%);
  --gradient-secondary: linear-gradient(135deg, #4ECDC4 0%, #44A08D 100%);
  --shadow-soft: 0 4px 20px rgba(0, 0, 0, 0.3);
  --shadow-hover: 0 8px 30px rgba(255, 107, 53, 0.3);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 重置样式 */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background-color: var(--dark-bg);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* 背景装饰 */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(ellipse at 20% 20%, rgba(255, 107, 53, 0.1) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(78, 205, 196, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, rgba(255, 230, 109, 0.05) 0%, transparent 70%);
  pointer-events: none;
  z-index: -1;
}

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

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

ul, ol {
  list-style: none;
}

/* 容器 */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 头部导航 */
.header {
  background: rgba(26, 26, 46, 0.95);
  backdrop-filter: blur(20px);
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid var(--border-color);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 15px 0;
  gap: 30px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.logo-icon {
  width: 48px;
  height: 48px;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  box-shadow: var(--shadow-soft);
}

.logo-text {
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo-text span {
  display: block;
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--text-muted);
  -webkit-text-fill-color: var(--text-muted);
}

/* 主导航 */
.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  overflow: hidden;
}

.nav-link::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: var(--transition);
  transform: translateX(-50%);
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary-color);
}

.nav-link:hover::before,
.nav-link.active::before {
  width: 60%;
}

/* 搜索框 */
.search-box {
  display: flex;
  align-items: center;
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 8px 16px;
  border: 1px solid var(--border-color);
  transition: var(--transition);
  min-width: 200px;
}

.search-box:focus-within {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.2);
}

.search-box input {
  background: none;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-size: 0.9rem;
  width: 100%;
  padding: 4px 8px;
}

.search-box input::placeholder {
  color: var(--text-muted);
}

.search-box button {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  transition: var(--transition);
}

.search-box button:hover {
  color: var(--primary-color);
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 8px;
}

/* Hero区域 */
.hero {
  padding: 60px 0;
  text-align: center;
  position: relative;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 107, 53, 0.15);
  border: 1px solid rgba(255, 107, 53, 0.3);
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 0.875rem;
  color: var(--primary-color);
  margin-bottom: 24px;
  animation: fadeInUp 0.6s ease;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
  animation: fadeInUp 0.6s ease 0.1s both;
}

.hero h1 .highlight {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 32px;
  animation: fadeInUp 0.6s ease 0.2s both;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
  animation: fadeInUp 0.6s ease 0.3s both;
}

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

.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* 区块标题 */
.section {
  padding: 60px 0;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
  flex-wrap: wrap;
  gap: 16px;
}

.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 12px;
}

.section-title::before {
  content: '';
  width: 4px;
  height: 28px;
  background: var(--gradient-primary);
  border-radius: 2px;
}

.section-link {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--primary-color);
  font-weight: 500;
  font-size: 0.9rem;
}

.section-link:hover {
  gap: 10px;
}

/* 漫画卡片网格 */
.manga-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 24px;
}

.manga-card {
  background: var(--card-bg);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
  border: 1px solid var(--border-color);
}

.manga-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary-color);
}

.manga-cover {
  position: relative;
  aspect-ratio: 3/4;
  overflow: hidden;
}

.manga-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.manga-card:hover .manga-cover img {
  transform: scale(1.08);
}

.manga-tag {
  position: absolute;
  top: 10px;
  left: 10px;
  background: var(--gradient-primary);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}

.manga-status {
  position: absolute;
  bottom: 10px;
  right: 10px;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 0.75rem;
  color: var(--secondary-color);
}

.manga-info {
  padding: 16px;
}

.manga-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.4;
}

.manga-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.manga-author {
  display: flex;
  align-items: center;
  gap: 4px;
}

.manga-views {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* 分类标签 */
.category-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 32px;
}

.category-tag {
  padding: 10px 24px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  font-weight: 500;
  transition: var(--transition);
}

.category-tag:hover,
.category-tag.active {
  background: var(--gradient-primary);
  border-color: transparent;
  transform: translateY(-2px);
}

/* 特色推荐 */
.featured-section {
  background: var(--darker-bg);
  border-radius: var(--radius-lg);
  padding: 40px;
  margin: 40px 0;
  border: 1px solid var(--border-color);
}

.featured-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 32px;
  align-items: center;
}

.featured-cover {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 3/4;
}

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

.featured-content h3 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.featured-desc {
  color: var(--text-secondary);
  margin-bottom: 20px;
  line-height: 1.8;
}

.featured-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.featured-tags span {
  padding: 6px 14px;
  background: rgba(78, 205, 196, 0.15);
  color: var(--secondary-color);
  border-radius: 20px;
  font-size: 0.8rem;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: var(--gradient-primary);
  border: none;
  border-radius: var(--radius-lg);
  color: white;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

/* 排行榜 */
.ranking-section {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.ranking-card {
  background: var(--card-bg);
  border-radius: var(--radius-md);
  padding: 24px;
  border: 1px solid var(--border-color);
}

.ranking-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.ranking-title .icon {
  font-size: 1.3rem;
}

.ranking-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.ranking-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.ranking-item:hover {
  background: rgba(255, 107, 53, 0.1);
}

.ranking-num {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  font-weight: 700;
  font-size: 0.9rem;
  background: var(--border-color);
  color: var(--text-muted);
  flex-shrink: 0;
}

.ranking-item:nth-child(1) .ranking-num {
  background: var(--gradient-primary);
  color: white;
}

.ranking-item:nth-child(2) .ranking-num {
  background: var(--gradient-secondary);
  color: white;
}

.ranking-item:nth-child(3) .ranking-num {
  background: linear-gradient(135deg, #FFE66D 0%, #FFD93D 100%);
  color: var(--dark-bg);
}

.ranking-thumb {
  width: 48px;
  height: 64px;
  border-radius: 6px;
  overflow: hidden;
  flex-shrink: 0;
}

.ranking-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

.ranking-info h4 {
  font-size: 0.95rem;
  font-weight: 500;
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ranking-info p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* 页脚 */
.footer {
  background: var(--darker-bg);
  border-top: 1px solid var(--border-color);
  padding: 60px 0 30px;
  margin-top: 60px;
}

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

.footer-brand .logo {
  margin-bottom: 20px;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.8;
  margin-bottom: 20px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--card-bg);
  border-radius: var(--radius-sm);
  font-size: 1.2rem;
  transition: var(--transition);
}

.footer-social a:hover {
  background: var(--gradient-primary);
  transform: translateY(-3px);
}

.footer-links h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

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

.footer-bottom {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 0.85rem;
}

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

/* 面包屑导航 */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 20px 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.breadcrumb a {
  color: var(--text-secondary);
}

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

.breadcrumb span {
  color: var(--text-muted);
}

/* 内页样式 */
.page-header {
  padding: 40px 0;
  text-align: center;
  background: var(--darker-bg);
  margin-bottom: 40px;
}

.page-header h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.page-header p {
  color: var(--text-secondary);
}

/* 分类页面 */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 32px;
  padding: 20px;
  background: var(--card-bg);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.filter-label {
  font-weight: 500;
  color: var(--text-secondary);
  white-space: nowrap;
}

.filter-options {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-btn {
  padding: 6px 16px;
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: 20px;
  color: var(--text-secondary);
  font-size: 0.85rem;
  cursor: pointer;
  transition: var(--transition);
}

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

/* 分页 */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 48px;
}

.page-btn {
  min-width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: var(--transition);
}

.page-btn:hover,
.page-btn.active {
  background: var(--primary-color);
  border-color: var(--primary-color);
  color: white;
}

/* 关于页面 */
.about-content {
  max-width: 800px;
  margin: 0 auto;
}

.about-section {
  margin-bottom: 48px;
}

.about-section h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--primary-color);
}

.about-section p {
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: 16px;
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
  margin-top: 32px;
}

.feature-item {
  background: var(--card-bg);
  border-radius: var(--radius-md);
  padding: 24px;
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.feature-item:hover {
  border-color: var(--primary-color);
  transform: translateY(-4px);
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.feature-item h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.feature-item p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin: 0;
}

/* 动画 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 响应式设计 */
@media (max-width: 1024px) {
  .ranking-section {
    grid-template-columns: 1fr;
  }
  
  .featured-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  html {
    font-size: 14px;
  }
  
  .header-inner {
    flex-wrap: wrap;
  }
  
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--darker-bg);
    flex-direction: column;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
  }
  
  .main-nav.active {
    display: flex;
  }
  
  .mobile-menu-btn {
    display: block;
  }
  
  .search-box {
    order: 3;
    width: 100%;
    margin-top: 15px;
  }
  
  .hero {
    padding: 40px 0;
  }
  
  .hero-stats {
    gap: 24px;
  }
  
  .stat-number {
    font-size: 2rem;
  }
  
  .section {
    padding: 40px 0;
  }
  
  .manga-grid {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 16px;
  }
  
  .featured-section {
    padding: 24px;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  
  .filter-bar {
    flex-direction: column;
  }
  
  .filter-group {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 15px;
  }
  
  .manga-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  
  .manga-info {
    padding: 12px;
  }
  
  .manga-title {
    font-size: 0.9rem;
  }
  
  .category-tags {
    gap: 8px;
  }
  
  .category-tag {
    padding: 8px 16px;
    font-size: 0.85rem;
  }
}

/* 图片懒加载占位 */
.lazy-img {
  background: linear-gradient(135deg, var(--card-bg) 0%, var(--border-color) 100%);
  animation: shimmer 1.5s infinite;
}

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

/* SEO友好的隐藏内容 */
.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;
}