/* 企业级后台管理系统样式 */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --primary-color: #1890ff;
  --primary-hover: #40a9ff;
  --success-color: #52c41a;
  --warning-color: #faad14;
  --danger-color: #ff4d4f;
  --text-primary: #262626;
  --text-secondary: #595959;
  --text-disabled: #bfbfbf;
  --border-color: #d9d9d9;
  --bg-color: #f0f2f5;
  --sidebar-bg: #001529;
  --sidebar-hover: #1890ff;
  --header-bg: #fff;
  --card-bg: #fff;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  background: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.5715;
  font-size: 14px;
  overflow-x: hidden;
}

/* 侧边栏 */
.sidebar {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: 256px;
  background: var(--sidebar-bg);
  color: #fff;
  z-index: 1000;
  overflow-y: auto;
  transition: all 0.3s;
  box-shadow: 2px 0 8px rgba(0, 0, 0, 0.15);
}

.sidebar-logo {
  height: 64px;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-logo h1 {
  color: #fff;
  font-size: 18px;
  font-weight: 600;
  margin: 0;
  display: flex;
  align-items: center;
  gap: 12px;
}

.sidebar-menu {
  padding: 16px 0;
}

.sidebar-menu-item {
  display: block;
  padding: 12px 24px;
  color: rgba(255, 255, 255, 0.65);
  text-decoration: none;
  transition: all 0.3s;
  border-left: 3px solid transparent;
  font-size: 14px;
}

.sidebar-menu-item:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  border-left-color: var(--sidebar-hover);
}

.sidebar-menu-item.active {
  background: var(--sidebar-hover);
  color: #fff;
  border-left-color: #fff;
}

.sidebar-menu-item i {
  margin-right: 12px;
  width: 16px;
  display: inline-block;
  text-align: center;
}

/* 主内容区 */
.main-layout {
  margin-left: 256px;
  min-height: 100vh;
  transition: margin-left 0.3s;
}

/* 顶部导航栏 */
.top-header {
  background: var(--header-bg);
  height: 64px;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 999;
}

.top-header-left {
  display: flex;
  align-items: center;
  gap: 24px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  font-size: 14px;
}

.breadcrumb-item {
  color: var(--text-secondary);
  text-decoration: none;
}

.breadcrumb-item:last-child {
  color: var(--text-primary);
  font-weight: 500;
}

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

.top-header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.user-dropdown {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.3s;
}

.user-dropdown:hover {
  background: var(--bg-color);
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 500;
}

.user-name {
  font-size: 14px;
  color: var(--text-primary);
}

.logout-btn {
  color: var(--danger-color);
  text-decoration: none;
  padding: 8px 16px;
  border-radius: 4px;
  transition: all 0.3s;
}

.logout-btn:hover {
  background: #fff1f0;
}

/* 内容区域 */
.content-wrapper {
  padding: 24px;
}

.page-header {
  background: var(--card-bg);
  padding: 16px 24px;
  margin-bottom: 24px;
  border-radius: 4px;
  box-shadow: var(--shadow);
}

.page-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
  display: flex;
  align-items: center;
  gap: 12px;
}

.page-description {
  color: var(--text-secondary);
  font-size: 14px;
  margin-top: 8px;
}

/* 卡片 */
.card {
  background: var(--card-bg);
  border-radius: 4px;
  box-shadow: var(--shadow);
  padding: 24px;
  margin-bottom: 24px;
  transition: all 0.3s;
}

.card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
}

.card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

/* 统计卡片 */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--card-bg);
  border-radius: 4px;
  padding: 24px;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
  transition: all 0.3s;
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--primary-color);
}

.stat-card.success::before {
  background: var(--success-color);
}

.stat-card.warning::before {
  background: var(--warning-color);
}

.stat-card.danger::before {
  background: var(--danger-color);
}

.stat-card-icon {
  width: 48px;
  height: 48px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 16px;
  background: rgba(24, 144, 255, 0.1);
  color: var(--primary-color);
}

.stat-card.success .stat-card-icon {
  background: rgba(82, 196, 26, 0.1);
  color: var(--success-color);
}

.stat-card.warning .stat-card-icon {
  background: rgba(250, 173, 20, 0.1);
  color: var(--warning-color);
}

.stat-card.danger .stat-card-icon {
  background: rgba(255, 77, 79, 0.1);
  color: var(--danger-color);
}

.stat-card-value {
  font-size: 32px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.stat-card-label {
  font-size: 14px;
  color: var(--text-secondary);
}

/* 搜索栏 */
.search-bar {
  background: var(--card-bg);
  padding: 16px 24px;
  margin-bottom: 24px;
  border-radius: 4px;
  box-shadow: var(--shadow);
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
}

.search-input {
  flex: 1;
  min-width: 200px;
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  font-size: 14px;
  transition: all 0.3s;
  outline: none;
}

.search-input:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(24, 144, 255, 0.2);
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 16px;
  border: 1px solid transparent;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.3s;
  white-space: nowrap;
  height: 32px;
  line-height: 1;
}

.btn-primary {
  background: var(--primary-color);
  color: #fff;
  border-color: var(--primary-color);
}

.btn-primary:hover {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(24, 144, 255, 0.3);
}

.btn-secondary {
  background: #fff;
  color: var(--text-primary);
  border-color: var(--border-color);
}

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

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

.btn-danger:hover {
  background: #ff7875;
  border-color: #ff7875;
}

.btn-sm {
  padding: 4px 12px;
  height: 24px;
  font-size: 12px;
}

.search-btn {
  padding: 8px 24px;
  height: 32px;
}

/* 表格 */
.table-wrapper {
  background: var(--card-bg);
  border-radius: 4px;
  box-shadow: var(--shadow);
  overflow: hidden;
  margin-bottom: 24px;
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.table thead {
  background: #fafafa;
}

.table th {
  padding: 16px;
  text-align: left;
  font-weight: 600;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

.table td {
  padding: 16px;
  border-bottom: 1px solid #f0f0f0;
  color: var(--text-secondary);
}

.table tbody tr {
  transition: all 0.3s;
}

.table tbody tr:hover {
  background: #fafafa;
}

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

.action-links {
  display: flex;
  gap: 8px;
}

.action-link {
  padding: 4px 12px;
  border-radius: 4px;
  text-decoration: none;
  font-size: 12px;
  transition: all 0.3s;
  border: 1px solid transparent;
}

.action-link.edit {
  background: #e6f7ff;
  color: #1890ff;
  border-color: #91d5ff;
}

.action-link.edit:hover {
  background: #bae7ff;
  border-color: #69c0ff;
}

.action-link.delete {
  background: #fff1f0;
  color: #ff4d4f;
  border-color: #ffccc7;
}

.action-link.delete:hover {
  background: #ffccc7;
  border-color: #ff7875;
}

/* 分页器 */
.pager {
  background: var(--card-bg);
  padding: 16px 24px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 14px;
  border-radius: 4px;
  box-shadow: var(--shadow);
}

/* 表单 */
.form-card {
  background: var(--card-bg);
  border-radius: 4px;
  box-shadow: var(--shadow);
  padding: 24px;
  max-width: 800px;
  margin: 0 auto;
}

.form-row {
  margin-bottom: 24px;
}

.form-row label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: var(--text-primary);
  font-size: 14px;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  font-size: 14px;
  transition: all 0.3s;
  background: #fff;
  font-family: inherit;
  outline: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(24, 144, 255, 0.2);
}

.form-textarea {
  min-height: 100px;
  resize: vertical;
}

.form-actions {
  display: flex;
  gap: 12px;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
}

/* 登录页面 */
.login-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  padding: 20px;
}

.login-card {
  background: var(--card-bg);
  border-radius: 8px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  padding: 48px;
  width: 100%;
  max-width: 420px;
}

.login-card h2 {
  margin: 0 0 32px 0;
  font-size: 24px;
  font-weight: 600;
  color: var(--text-primary);
  text-align: center;
}

.login-card .error {
  background: #fff1f0;
  color: #ff4d4f;
  padding: 12px 16px;
  border-radius: 4px;
  margin-bottom: 24px;
  font-size: 14px;
  text-align: center;
  border: 1px solid #ffccc7;
}

/* 空状态 */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-secondary);
}

.empty-icon {
  font-size: 64px;
  margin-bottom: 16px;
  opacity: 0.5;
}

.empty-text {
  font-size: 16px;
  color: var(--text-secondary);
}

/* 徽章 */
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 2px;
  font-size: 12px;
  font-weight: 500;
  line-height: 1.5;
}

.badge-success {
  background: #f6ffed;
  color: #52c41a;
  border: 1px solid #b7eb8f;
}

.badge-danger {
  background: #fff1f0;
  color: #ff4d4f;
  border: 1px solid #ffccc7;
}

.badge-info {
  background: #e6f7ff;
  color: #1890ff;
  border: 1px solid #91d5ff;
}

/* 网格布局 */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.grid-item {
  background: var(--card-bg);
  border-radius: 4px;
  padding: 24px;
  box-shadow: var(--shadow);
  transition: all 0.3s;
}

.grid-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
}

.grid-item h3 {
  font-size: 16px;
  font-weight: 600;
  margin: 0 0 8px 0;
  color: var(--text-primary);
}

.grid-item p {
  color: var(--text-secondary);
  font-size: 14px;
  margin: 0 0 16px 0;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }
  
  .sidebar.open {
    transform: translateX(0);
  }
  
  .main-layout {
    margin-left: 0;
  }
  
  .content-wrapper {
    padding: 16px;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .search-bar {
    flex-direction: column;
  }
  
  .search-input {
    width: 100%;
  }
  
  .table-wrapper {
    overflow-x: auto;
  }
  
  .table {
    min-width: 800px;
  }
}

/* 动画 */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.3s ease-out;
}

/* 工具类 */
.text-center {
  text-align: center;
}

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

.mt-16 {
  margin-top: 16px;
}

.mb-16 {
  margin-bottom: 16px;
}

.ml-16 {
  margin-left: 16px;
}

.mr-16 {
  margin-right: 16px;
}

/* 状态标签样式 */
.status-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 500;
  line-height: 1.5;
}

.status-available {
  background-color: #f6ffed;
  color: #52c41a;
  border: 1px solid #b7eb8f;
}

.status-occupied {
  background-color: #fff1f0;
  color: #ff4d4f;
  border: 1px solid #ffccc7;
}

.status-reserved {
  background-color: #fffbe6;
  color: #faad14;
  border: 1px solid #ffe58f;
}