/* ABOUTME: Forum page stylesheet */
/* ABOUTME: Modern forum design with dark mode support */

/* Reset and base styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* 隐藏预览环境的系统角标和水印 */
[class*="coze-"],
[id*="coze-"],
[class*="Coze"],
[class*="powered-by"],
[class*="watermark"],
[class*="corner-badge"],
[class*="float-badge"],
a[href*="coze"] {
  display: none !important;
  visibility: hidden !important;
  opacity: 0 !important;
}

:root {
  /* Light theme colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-tertiary: #f1f3f5;
  --text-primary: #1a1a1a;
  --text-secondary: #495057;
  --text-muted: #868e96;
  --border-color: #e9ecef;
  --accent-primary: #4dabf7;
  --accent-secondary: #748ffc;
  --accent-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
}

/* Dark theme */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-primary: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-tertiary: #0f3460;
    --text-primary: #e9ecef;
    --text-secondary: #adb5bd;
    --text-muted: #6c757d;
    --border-color: #2d3748;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.5);
  }
}

body {
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
    sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.6;
}

#app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* 导航栏 */
.navbar {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  padding: 0.75rem 1.5rem;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo {
  font-size: 2rem;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}

.brand-name {
  font-size: 1.25rem;
  font-weight: 700;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  gap: 0.5rem;
}

.nav-link {
  padding: 0.5rem 1rem;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: all 0.2s;
  font-weight: 500;
}

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

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.search-box {
  display: flex;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.search-input {
  padding: 0.5rem 1rem;
  border: none;
  background: transparent;
  color: var(--text-primary);
  width: 200px;
  outline: none;
}

.search-btn {
  padding: 0.5rem 1rem;
  border: none;
  background: transparent;
  cursor: pointer;
  font-size: 1rem;
}

.btn-primary {
  padding: 0.5rem 1.25rem;
  background: var(--accent-gradient);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 500;
  transition: all 0.2s;
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  padding: 0.5rem 1.25rem;
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 500;
  transition: all 0.2s;
}

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

/* Hero区域 */
.hero {
  background: var(--accent-gradient);
  padding: 3rem 1.5rem;
  text-align: center;
  color: white;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.hero-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  animation: fadeInDown 0.6s ease-out;
}

.hero-desc {
  font-size: 1.125rem;
  opacity: 0.95;
  margin-bottom: 2rem;
  animation: fadeInUp 0.6s ease-out 0.2s backwards;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 3rem;
  animation: fadeInUp 0.6s ease-out 0.4s backwards;
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-number {
  font-size: 2rem;
  font-weight: 700;
}

.stat-label {
  font-size: 0.875rem;
  opacity: 0.9;
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

/* 主内容区域 */
.main-content {
  flex: 1;
  padding: 2rem 1.5rem;
}

.content-wrapper {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 2rem;
}

.content-main {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* 卡片样式 */
.section-card {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.section-title {
  font-size: 1.25rem;
  font-weight: 600;
}

.view-all {
  color: var(--accent-primary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.875rem;
  transition: color 0.2s;
}

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

/* 版块列表 */
.forum-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.forum-item {
  display: grid;
  grid-template-columns: 50px 1fr 200px;
  gap: 1rem;
  padding: 1rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  transition: all 0.2s;
  cursor: pointer;
}

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

.forum-icon {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.forum-info {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.forum-name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.forum-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.forum-stats {
  display: flex;
  gap: 0.5rem;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.forum-latest {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.avatar-sm {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--bg-tertiary);
}

.latest-info {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.latest-title {
  font-size: 0.875rem;
  color: var(--text-primary);
  font-weight: 500;
  max-width: 150px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.latest-time {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* 筛选标签 */
.filter-tabs {
  display: flex;
  gap: 0.5rem;
}

.filter-tab {
  padding: 0.5rem 1rem;
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 0.875rem;
  transition: all 0.2s;
}

.filter-tab:hover {
  background: var(--bg-tertiary);
}

.filter-tab.active {
  background: var(--accent-gradient);
  color: white;
  border-color: transparent;
}

/* 帖子列表 */
.post-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.post-item {
  display: flex;
  gap: 1rem;
  padding: 1.25rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  transition: all 0.2s;
  cursor: pointer;
}

.post-item:hover {
  background: var(--bg-tertiary);
  box-shadow: var(--shadow-md);
}

.avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--bg-tertiary);
  flex-shrink: 0;
}

.post-content {
  flex: 1;
}

.post-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.post-tag {
  font-size: 0.75rem;
  padding: 0.125rem 0.5rem;
  border-radius: var(--radius-sm);
  font-weight: 500;
}

.post-tag.hot {
  background: #fee2e2;
  color: #dc2626;
}

.post-tag.elite {
  background: #fef3c7;
  color: #d97706;
}

.post-excerpt {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-meta {
  display: flex;
  gap: 0.5rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.author {
  font-weight: 500;
}

.post-actions {
  display: flex;
  gap: 1rem;
}

.action-item {
  font-size: 0.75rem;
  color: var(--text-muted);
  transition: color 0.2s;
}

.action-item:hover {
  color: var(--accent-primary);
}

.load-more {
  text-align: center;
  margin-top: 1rem;
}

.btn-load-more {
  padding: 0.75rem 2rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  cursor: pointer;
  font-weight: 500;
  transition: all 0.2s;
}

.btn-load-more:hover {
  background: var(--bg-tertiary);
  border-color: var(--accent-primary);
}

/* 侧边栏 */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.btn-post {
  width: 100%;
  padding: 1rem;
  background: var(--accent-gradient);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.2s;
  box-shadow: var(--shadow-md);
}

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

.sidebar-card {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
}

.sidebar-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-color);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  padding: 0.375rem 0.75rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s;
}

.tag:hover {
  background: var(--accent-gradient);
  color: white;
}

.user-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.user-item {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  transition: background 0.2s;
}

.user-item:hover {
  background: var(--bg-secondary);
}

.user-info {
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
}

.user-name {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
}

.user-contrib {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.link-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.link-item {
  padding: 0.5rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  transition: all 0.2s;
  border-radius: var(--radius-sm);
}

.link-item:hover {
  background: var(--bg-secondary);
  color: var(--accent-primary);
}

/* 页脚 */
.footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border-color);
  margin-top: 3rem;
}

.footer-content {
  max-width: 1400px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.footer-section {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.footer-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.footer-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  transition: color 0.2s;
}

.footer-link:hover {
  color: var(--accent-primary);
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  padding: 0.5rem 1rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  transition: all 0.2s;
}

.social-link:hover {
  background: var(--accent-gradient);
  color: white;
}

.footer-bottom {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border-color);
  text-align: center;
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* 响应式设计 */
@media (max-width: 1024px) {
  .content-wrapper {
    grid-template-columns: 1fr;
  }
  
  .sidebar {
    order: -1;
  }
  
  .forum-item {
    grid-template-columns: 50px 1fr;
  }
  
  .forum-latest {
    display: none;
  }
}

@media (max-width: 768px) {
  .nav-container {
    flex-wrap: wrap;
  }
  
  .nav-links {
    order: 3;
    width: 100%;
    justify-content: center;
  }
  
  .search-input {
    width: 150px;
  }
  
  .btn-secondary {
    display: none;
  }
  
  .hero-title {
    font-size: 1.75rem;
  }
  
  .hero-stats {
    gap: 1.5rem;
  }
  
  .stat-number {
    font-size: 1.5rem;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}

@media (max-width: 480px) {
  .nav-actions {
    flex: 1;
    justify-content: flex-end;
  }
  
  .search-box {
    display: none;
  }
  
  .hero {
    padding: 2rem 1rem;
  }
  
  .main-content {
    padding: 1rem;
  }
  
  .section-card {
    padding: 1rem;
  }
  
  .post-item {
    padding: 1rem;
  }
  
  .avatar {
    width: 40px;
    height: 40px;
  }
}