* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: "Microsoft YaHei", Arial, sans-serif; background: #f5f7fa; color: #333; }

/* 登录页 */
.login-body { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); min-height: 100vh; display: flex; align-items: center; justify-content: center; }
.login-box { background: #fff; padding: 40px; border-radius: 10px; box-shadow: 0 10px 40px rgba(0,0,0,0.2); width: 380px; }
.login-box h2 { text-align: center; margin-bottom: 30px; color: #333; font-size: 22px; }
.login-tip { text-align: center; margin-top: 20px; color: #999; font-size: 13px; }

/* 表单 */
.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 8px; font-weight: 500; color: #555; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 10px 12px; border: 1px solid #ddd; border-radius: 5px; font-size: 14px; transition: border-color 0.3s; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: #667eea; }
.form-group textarea { min-height: 80px; resize: vertical; }
.form-row { display: flex; gap: 15px; }
.form-row .form-group { flex: 1; }

/* 按钮 */
.btn { display: inline-block; padding: 10px 20px; border: none; border-radius: 5px; cursor: pointer; font-size: 14px; text-decoration: none; transition: all 0.3s; }
.btn-primary { background: #667eea; color: #fff; }
.btn-primary:hover { background: #5568d3; }
.btn-success { background: #52c41a; color: #fff; }
.btn-success:hover { background: #45a815; }
.btn-warning { background: #faad14; color: #fff; }
.btn-warning:hover { background: #e0980a; }
.btn-danger { background: #f5222d; color: #fff; }
.btn-danger:hover { background: #d91a24; }
.btn-default { background: #fff; color: #666; border: 1px solid #ddd; }
.btn-default:hover { background: #f5f5f5; }
.btn-block { width: 100%; }
.btn-sm { padding: 5px 12px; font-size: 12px; }

/* 提示框 */
.alert { padding: 12px 16px; border-radius: 5px; margin-bottom: 20px; font-size: 14px; }
.alert-error { background: #fff2f0; border: 1px solid #ffccc7; color: #f5222d; }
.alert-success { background: #f6ffed; border: 1px solid #b7eb8f; color: #52c41a; }

/* 后台布局 */
.admin-layout { display: flex; min-height: 100vh; }
.sidebar { width: 220px; background: #001529; color: #fff; flex-shrink: 0; }
.sidebar .logo { padding: 20px; text-align: center; font-size: 18px; font-weight: bold; border-bottom: 1px solid #1f3a5c; }
.sidebar nav { padding: 10px 0; }
.sidebar nav a { display: block; padding: 12px 24px; color: #a6b3c4; text-decoration: none; font-size: 14px; transition: all 0.3s; }
.sidebar nav a:hover, .sidebar nav a.active { background: #1890ff; color: #fff; }
.main-content { flex: 1; padding: 20px; overflow-x: auto; }
.page-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; padding-bottom: 15px; border-bottom: 1px solid #e8e8e8; }
.page-header h1 { font-size: 20px; color: #333; }
.user-info { display: flex; align-items: center; gap: 15px; font-size: 14px; color: #666; }
.user-info a { color: #1890ff; text-decoration: none; }

/* 统计卡片 */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; margin-bottom: 30px; }
.stat-card { background: #fff; padding: 25px; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.06); }
.stat-card .stat-label { color: #999; font-size: 14px; margin-bottom: 10px; }
.stat-card .stat-value { font-size: 32px; font-weight: bold; color: #333; }
.stat-card.primary .stat-value { color: #1890ff; }
.stat-card.success .stat-value { color: #52c41a; }
.stat-card.warning .stat-value { color: #faad14; }
.stat-card.danger .stat-value { color: #f5222d; }

/* 表格 */
.table-container { background: #fff; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.06); overflow: hidden; }
table { width: 100%; border-collapse: collapse; }
table th { background: #fafafa; padding: 14px 16px; text-align: left; font-weight: 600; color: #555; border-bottom: 1px solid #e8e8e8; font-size: 14px; }
table td { padding: 14px 16px; border-bottom: 1px solid #f0f0f0; font-size: 14px; color: #666; }
table tr:hover { background: #fafafa; }
table tr:last-child td { border-bottom: none; }

/* 标签 */
.tag { display: inline-block; padding: 3px 10px; border-radius: 3px; font-size: 12px; }
.tag-free { background: #f6ffed; color: #52c41a; border: 1px solid #b7eb8f; }
.tag-rent { background: #fff7e6; color: #fa8c16; border: 1px solid #ffd591; }
.tag-wait { background: #fff2f0; color: #f5222d; border: 1px solid #ffccc7; }
.tag-done { background: #f6ffed; color: #52c41a; border: 1px solid #b7eb8f; }
.tag-doing { background: #e6f7ff; color: #1890ff; border: 1px solid #91d5ff; }

/* 操作栏 */
.action-bar { margin-bottom: 20px; display: flex; gap: 10px; align-items: center; }
.action-bar .search-box { display: flex; gap: 10px; }
.action-bar .search-box input { width: 200px; padding: 8px 12px; border: 1px solid #ddd; border-radius: 5px; }

/* 弹窗/表单页 */
.form-card { background: #fff; padding: 30px; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.06); max-width: 900px; }
.form-actions { margin-top: 30px; padding-top: 20px; border-top: 1px solid #f0f0f0; display: flex; gap: 15px; }

/* 分页 */
.pagination { margin-top: 20px; display: flex; gap: 8px; justify-content: center; }
.pagination a, .pagination span { padding: 6px 12px; border: 1px solid #ddd; border-radius: 4px; text-decoration: none; color: #666; font-size: 13px; }
.pagination .current { background: #1890ff; color: #fff; border-color: #1890ff; }

/* 空状态 */
.empty-state { text-align: center; padding: 60px 20px; color: #999; }
.empty-state p { margin-top: 10px; font-size: 14px; }