/* 全局样式 */
:root {
  --primary-color: #4a6cf7;
  --primary-hover: #3a57e8;
  --secondary-color: #6c757d;
  --success-color: #28a745;
  --danger-color: #dc3545;
  --dark-color: #343a40;
  --light-color: #f8f9fa;
  --body-bg: #f5f8fb;
  --card-bg: #ffffff;
  --border-color: #e0e6ed;
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  --shadow-hover: 0 8px 15px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
}

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

body {
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: var(--body-bg);
}

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

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

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

.btn {
  display: inline-block;
  padding: 8px 16px;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: var(--transition);
}

.btn:hover {
  background-color: var(--primary-hover);
}

.btn-secondary {
  background-color: var(--secondary-color);
}

.btn-success {
  background-color: var(--success-color);
}

.btn-danger {
  background-color: var(--danger-color);
}

.form-group {
  margin-bottom: 1rem;
}

.form-control {
  display: block;
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  transition: var(--transition);
}

.form-control:focus {
  border-color: var(--primary-color);
  outline: none;
}

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

.mt-4 {
  margin-top: 1.5rem;
}

.mb-4 {
  margin-bottom: 1.5rem;
}

/* 头部样式 */
.header {
  background-color: var(--card-bg);
  box-shadow: var(--shadow);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--primary-color);
}

.nav-links {
  display: flex;
  list-style: none;
}

.nav-links li {
  margin-left: 1.5rem;
}

/* 主内容区域 */
.main {
  padding: 2rem 0;
}

/* 分类导航 */
.category-nav {
  background-color: var(--card-bg);
  border-radius: 8px;
  box-shadow: var(--shadow);
  margin-bottom: 2rem;
  overflow: hidden;
}

.category-list {
  display: flex;
  list-style: none;
  padding: 0.5rem;
  overflow-x: auto;
}

.category-item {
  padding: 0.5rem 1rem;
  cursor: pointer;
  white-space: nowrap;
  transition: var(--transition);
  border-radius: 4px;
}

.category-item:hover, .category-item.active {
  background-color: var(--primary-color);
  color: white;
}

/* 网站卡片 */
.websites-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1.5rem;
}

.website-card {
  background-color: var(--card-bg);
  border-radius: 8px;
  box-shadow: var(--shadow);
  padding: 1.5rem;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.website-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

.website-icon {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  margin-bottom: 1rem;
  object-fit: cover;
  background-color: #f0f4f8;
}

.website-title {
  font-size: 1.2rem;
  font-weight: bold;
  margin-bottom: 0.5rem;
  color: var(--dark-color);
}

.website-desc {
  font-size: 0.9rem;
  color: var(--secondary-color);
  margin-bottom: 1rem;
  flex-grow: 1;
}

.website-link {
  display: block;
  width: 100%;
  background-color: var(--primary-color);
  color: white;
  padding: 8px 12px;
  border-radius: 4px;
  transition: var(--transition);
}

.website-link:hover {
  background-color: var(--primary-hover);
  color: white;
}

/* 弹窗样式 */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  justify-content: center;
  align-items: center;
}

.modal.show {
  display: flex;
}

.modal-content {
  background-color: var(--card-bg);
  border-radius: 8px;
  padding: 2rem;
  width: 90%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.modal-title {
  font-size: 1.5rem;
  font-weight: bold;
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--secondary-color);
}

.modal-body {
  margin-bottom: 1.5rem;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
}

/* 管理区域 */
.admin-section {
  background-color: var(--card-bg);
  border-radius: 8px;
  box-shadow: var(--shadow);
  padding: 1.5rem;
  margin-top: 2rem;
}

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

.admin-title {
  font-size: 1.5rem;
  font-weight: bold;
}

.admin-tabs {
  display: flex;
  list-style: none;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.tab-item {
  padding: 0.8rem 1.5rem;
  cursor: pointer;
  transition: var(--transition);
  border-bottom: 3px solid transparent;
}

.tab-item:hover, .tab-item.active {
  border-bottom-color: var(--primary-color);
  color: var(--primary-color);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* 表格样式 */
.table-container {
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th, .data-table td {
  padding: 0.8rem;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.data-table th {
  background-color: #f0f4f8;
  font-weight: bold;
}

.data-table tr:last-child td {
  border-bottom: none;
}

.data-table tr:hover {
  background-color: #f8f9fa;
}

.action-btns {
  display: flex;
  gap: 0.5rem;
}

/* 响应式调整 */
@media (max-width: 768px) {
  .websites-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  }
}

@media (max-width: 576px) {
  .websites-grid {
    grid-template-columns: 1fr;
  }
  
  .header-container {
    flex-direction: column;
  }
  
  .nav-links {
    margin-top: 1rem;
  }
  
  .nav-links li {
    margin-left: 0.8rem;
  }
}