/* 参考ai-bot.cn的高级样式 */
:root {
  --primary-color: #3498db;
  --secondary-color: #2980b9;
  --accent-color: #f39c12;
  --text-color: #333;
  --light-gray: #f9f9f9;
  --border-color: #eaeaea;
  --card-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  --transition-speed: 0.3s;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: #f5f7fa;
}

/* 高级导航栏样式 */
.advanced-header {
  background-color: #fff;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.top-bar {
  background-color: #f8f9fa;
  padding: 8px 0;
  border-bottom: 1px solid #eee;
  font-size: 14px;
}

.main-nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 15px 20px;
}

.site-logo {
  display: flex;
  align-items: center;
  font-size: 22px;
  font-weight: 700;
  text-decoration: none;
  color: var(--primary-color);
}

.site-logo img {
  height: 40px;
  margin-right: 10px;
}

.advanced-nav {
  display: flex;
}

.advanced-nav ul {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
}

.advanced-nav li {
  margin: 0 12px;
  position: relative;
}

.advanced-nav li a {
  text-decoration: none;
  color: var(--text-color);
  font-weight: 500;
  padding: 8px 0;
  transition: color var(--transition-speed);
  position: relative;
}

.advanced-nav li a:hover {
  color: var(--primary-color);
}

.advanced-nav li a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -2px;
  left: 0;
  background-color: var(--primary-color);
  transition: width var(--transition-speed);
}

.advanced-nav li a:hover::after {
  width: 100%;
}

/* 搜索框样式 */
.search-box {
  background: #f5f7fa;
  border-radius: 24px;
  padding: 8px 15px;
  display: flex;
  align-items: center;
  max-width: 280px;
  margin-left: 20px;
  border: 1px solid #eee;
}

.search-box input {
  border: none;
  background: transparent;
  padding: 6px 10px;
  width: 100%;
  outline: none;
  font-size: 14px;
}

.search-box button {
  background: transparent;
  border: none;
  color: #888;
  cursor: pointer;
  transition: color var(--transition-speed);
}

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

/* 分类导航 */
.category-nav {
  background-color: #fff;
  padding: 10px 0;
  border-bottom: 1px solid #eee;
  margin-bottom: 30px;
}

.category-list {
  display: flex;
  flex-wrap: wrap;
  list-style: none;
  padding: 0;
  margin: 0;
}

.category-list li {
  margin: 5px 10px 5px 0;
}

.category-list a {
  display: block;
  padding: 6px 14px;
  background: #f5f7fa;
  border-radius: 18px;
  color: var(--text-color);
  text-decoration: none;
  font-size: 14px;
  transition: all var(--transition-speed);
}

.category-list a:hover, 
.category-list a.active {
  background: var(--primary-color);
  color: #fff;
}

.category-list i {
  margin-right: 6px;
}

/* 更新工具卡片样式 */
.advanced-card {
  background: #fff;
  border-radius: 10px;
  box-shadow: var(--card-shadow);
  transition: transform var(--transition-speed), box-shadow var(--transition-speed);
  overflow: hidden;
  height: 100%;
}

.advanced-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
}

.advanced-tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.advanced-card .card-link {
  display: block;
  height: 100%;
  text-decoration: none;
  color: inherit;
}

.advanced-card .card-header {
  padding: 18px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
}

.advanced-card .tool-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  margin-right: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: bold;
  font-size: 18px;
}

.advanced-card .card-title {
  font-size: 18px;
  font-weight: 600;
  margin: 0;
  color: #333;
}

.advanced-card .card-body {
  padding: 15px 18px;
}

.advanced-card .card-desc {
  color: #666;
  font-size: 14px;
  line-height: 1.5;
  margin: 0;
}

.advanced-card .card-tags {
  display: flex;
  flex-wrap: wrap;
  margin-top: 12px;
  gap: 8px;
}

.advanced-card .tag {
  font-size: 12px;
  padding: 4px 8px;
  border-radius: 4px;
  background: #f5f7fa;
  color: #666;
}

/* 侧边栏样式 */
.sidebar {
  background: #fff;
  border-radius: 10px;
  box-shadow: var(--card-shadow);
  margin-bottom: 25px;
}

.sidebar-header {
  padding: 15px;
  border-bottom: 1px solid var(--border-color);
}

.sidebar-title {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
  color: #333;
}

.sidebar-content {
  padding: 15px;
}

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

.sidebar-list li {
  margin-bottom: 10px;
}

.sidebar-list a {
  display: block;
  text-decoration: none;
  color: var(--text-color);
  padding: 8px 0;
  border-bottom: 1px solid #f5f5f5;
  transition: color var(--transition-speed);
}

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

/* 页脚样式 */
.advanced-footer {
  background: #fff;
  padding: 40px 0 20px;
  margin-top: 50px;
  border-top: 1px solid var(--border-color);
}

.footer-columns {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 30px;
  margin-bottom: 30px;
}

.footer-column h4 {
  font-size: 16px;
  margin-top: 0;
  margin-bottom: 15px;
  color: #333;
}

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

.footer-links li {
  margin-bottom: 8px;
}

.footer-links a {
  color: #666;
  text-decoration: none;
  font-size: 14px;
  transition: color var(--transition-speed);
}

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

.footer-bottom {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid #eee;
  color: #888;
  font-size: 14px;
}

/* 响应式布局 */
@media (max-width: 992px) {
  .advanced-tool-grid {
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  }
}

@media (max-width: 768px) {
  .advanced-nav {
    display: none; /* 移动端导航需要另外处理 */
  }
  
  .search-box {
    margin-left: auto;
  }
  
  .advanced-tool-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  }
  
  .category-list a {
    padding: 5px 10px;
    font-size: 13px;
  }
}

@media (max-width: 576px) {
  .advanced-tool-grid {
    grid-template-columns: 1fr;
  }
  
  .advanced-card .card-header {
    padding: 15px;
  }
  
  .advanced-card .tool-icon {
    width: 40px;
    height: 40px;
    font-size: 16px;
  }
}