/* ============================================
   格斗游戏 - 格斗游戏爱好者的社区平台
   主样式表
   ============================================ */

/* CSS 变量 */
:root {
  --accent-color: #e53935;
  --accent-dark: #c62828;
  --bg-primary: #1a1a2e;
  --bg-secondary: #16213e;
  --bg-card: #0f3460;
  --text-primary: #eaeaea;
  --text-secondary: #a0a0a0;
  --text-muted: #6c757d;
  --border-color: #2d3748;
  --success: #28a745;
  --warning: #ffc107;
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.4);
  --radius: 8px;
  --radius-lg: 12px;
  --max-width: 1200px;
  --header-height: 70px;
}

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  min-height: 100vh;
}

a {
  color: var(--text-primary);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

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

ul, ol {
  list-style: none;
}

/* 容器 */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* ============================================
   Header 页头
   ============================================ */
.header {
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--accent-color), var(--accent-dark));
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

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

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
}

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

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--accent-color);
}

.search-box {
  display: flex;
  align-items: center;
  background-color: var(--bg-card);
  border-radius: var(--radius);
  padding: 8px 16px;
  gap: 8px;
}

.search-box input {
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 0.9rem;
  width: 180px;
  outline: none;
}

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

/* ============================================
   Hero Section
   ============================================ */
.hero {
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-card) 100%);
  padding: 80px 0;
  text-align: center;
  border-bottom: 1px solid var(--border-color);
}

.hero-title {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--text-primary), var(--accent-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 32px;
}

.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-color), var(--accent-dark));
  color: #fff;
}

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

.btn-secondary {
  background-color: transparent;
  color: var(--text-primary);
  border: 2px solid var(--border-color);
}

.btn-secondary:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.85rem;
}

/* ============================================
   Section 通用
   ============================================ */
.section {
  padding: 60px 0;
}

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

.section-title {
  font-size: 1.5rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 12px;
}

.section-title::before {
  content: '';
  width: 4px;
  height: 24px;
  background: linear-gradient(180deg, var(--accent-color), var(--accent-dark));
  border-radius: 2px;
}

.view-all {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.view-all:hover {
  color: var(--accent-color);
}

/* ============================================
   作者卡片网格
   ============================================ */
.author-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.author-card {
  background-color: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: 24px;
  text-align: center;
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

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

.author-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  margin: 0 auto 16px;
  background: linear-gradient(135deg, var(--accent-color), var(--accent-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 700;
}

.author-name {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.author-role {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.author-stats {
  display: flex;
  justify-content: center;
  gap: 24px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.author-stats span {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.author-stats strong {
  color: var(--text-primary);
  font-size: 1.1rem;
}

/* ============================================
   内容列表
   ============================================ */
.content-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.content-item {
  display: flex;
  gap: 20px;
  background-color: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: 20px;
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

.content-item:hover {
  border-color: var(--accent-color);
}

.content-thumb {
  width: 200px;
  height: 120px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--bg-card), var(--border-color));
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
}

.content-body {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.content-category {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-color);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.content-title {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.4;
}

.content-title a:hover {
  color: var(--accent-color);
}

.content-excerpt {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.content-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: auto;
}

.content-meta span {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ============================================
   三栏布局
   ============================================ */
.three-col {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.col-section {
  background-color: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: 24px;
  border: 1px solid var(--border-color);
}

.col-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

.col-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.col-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9rem;
}

.col-list li::before {
  content: '•';
  color: var(--accent-color);
  font-weight: bold;
}

.col-list a {
  color: var(--text-secondary);
  line-height: 1.5;
}

.col-list a:hover {
  color: var(--accent-color);
}

/* ============================================
   面包屑
   ============================================ */
.breadcrumb {
  background-color: var(--bg-secondary);
  padding: 16px 0;
  border-bottom: 1px solid var(--border-color);
}

.breadcrumb-inner {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

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

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

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

.breadcrumb-current {
  color: var(--text-primary);
}

/* ============================================
   作者详情页
   ============================================ */
.author-header {
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-card) 100%);
  padding: 60px 0;
  text-align: center;
  border-bottom: 1px solid var(--border-color);
}

.author-header-avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, var(--accent-color), var(--accent-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  font-weight: 700;
  box-shadow: var(--shadow-lg);
}

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

.author-header-bio {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 500px;
  margin: 0 auto 20px;
}

.author-social {
  display: flex;
  justify-content: center;
  gap: 16px;
}

.social-link {
  width: 40px;
  height: 40px;
  border-radius: var(--radius);
  background-color: var(--bg-card);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: all 0.3s ease;
}

.social-link:hover {
  background-color: var(--accent-color);
  color: #fff;
}

/* ============================================
   分页
   ============================================ */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-top: 40px;
}

.page-btn,
.page-num {
  min-width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.3s ease;
}

.page-btn {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  cursor: pointer;
}

.page-btn:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
}

.page-num {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.page-num:hover,
.page-num.active {
  background-color: var(--accent-color);
  border-color: var(--accent-color);
  color: #fff;
}

/* ============================================
   文章详情页
   ============================================ */
.article-header {
  background-color: var(--bg-secondary);
  padding: 40px 0;
  border-bottom: 1px solid var(--border-color);
}

.article-title {
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 20px;
}

.article-meta-bar {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.article-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.article-author-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-color), var(--accent-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
}

.article-author-info {
  display: flex;
  flex-direction: column;
}

.article-author-name {
  font-weight: 600;
  font-size: 0.95rem;
}

.article-date {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.article-stats {
  display: flex;
  gap: 20px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.article-stats span {
  display: flex;
  align-items: center;
  gap: 6px;
}

.article-featured-image {
  width: 100%;
  max-height: 400px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  margin: 40px 0;
  background: linear-gradient(135deg, var(--bg-card), var(--border-color));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
}

.article-content {
  max-width: 800px;
  margin: 0 auto;
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--text-secondary);
}

.article-content h2 {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 40px 0 20px;
}

.article-content h3 {
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 32px 0 16px;
}

.article-content p {
  margin-bottom: 20px;
}

.article-content ul,
.article-content ol {
  margin-bottom: 20px;
  padding-left: 24px;
}

.article-content ul li {
  list-style: disc;
  margin-bottom: 8px;
}

.article-content ol li {
  list-style: decimal;
  margin-bottom: 8px;
}

/* ============================================
   文章卡片网格
   ============================================ */
.post-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.post-card {
  background-color: var(--bg-secondary);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

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

.post-card-thumb {
  width: 100%;
  height: 160px;
  background: linear-gradient(135deg, var(--bg-card), var(--border-color));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
}

.post-card-body {
  padding: 20px;
}

.post-card-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 12px;
  line-height: 1.4;
}

.post-card-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ============================================
   404页面
   ============================================ */
.error-page {
  min-height: calc(100vh - var(--header-height) - 300px);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 60px 20px;
}

.error-content {
  max-width: 500px;
}

.error-code {
  font-size: 8rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent-color), var(--accent-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 20px;
}

.error-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.error-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.error-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================
   Footer 页脚
   ============================================ */
.footer {
  background-color: var(--bg-secondary);
  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: 40px;
  margin-bottom: 40px;
}

.footer-brand {
  max-width: 300px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.footer-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.footer-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 20px;
}

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

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

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

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-copyright {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-social {
  display: flex;
  gap: 16px;
}

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

  .three-col {
    grid-template-columns: repeat(2, 1fr);
  }

  .post-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .header-inner {
    flex-wrap: wrap;
    height: auto;
    padding: 16px 0;
    gap: 16px;
  }

  .nav {
    order: 3;
    width: 100%;
    justify-content: center;
    gap: 20px;
  }

  .hero {
    padding: 60px 0;
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-desc {
    font-size: 1rem;
  }

  .author-grid {
    grid-template-columns: 1fr;
  }

  .content-item {
    flex-direction: column;
  }

  .content-thumb {
    width: 100%;
    height: 180px;
  }

  .three-col {
    grid-template-columns: 1fr;
  }

  .post-grid {
    grid-template-columns: 1fr;
  }

  .article-title {
    font-size: 1.8rem;
  }

  .article-meta-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .section {
    padding: 40px 0;
  }

  .hero-title {
    font-size: 1.6rem;
  }

  .section-title {
    font-size: 1.2rem;
  }

  .error-code {
    font-size: 5rem;
  }

  .error-title {
    font-size: 1.5rem;
  }
}