/* 公共样式：侧边栏、顶栏、按钮、表格、标签、表单、分页、统计卡、弹窗 */
* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    background: #f0f2f5;
    color: #333;
    display: flex;
    min-height: 100vh;
}

a { text-decoration: none; }

/* 侧边栏 */
.sidebar { width: 240px; background: #001529; color: #fff; position: fixed; top: 0; left: 0; bottom: 0; overflow-y: auto; z-index: 100; }
.sidebar-logo { height: 64px; display: flex; align-items: center; justify-content: center; border-bottom: 1px solid rgba(255,255,255,0.1); }
.sidebar-logo h2 { font-size: 18px; color: #fff; }
.sidebar-menu { list-style: none; padding: 8px 0; }
.sidebar-menu li a { display: flex; align-items: center; padding: 14px 24px; color: rgba(255,255,255,0.65); text-decoration: none; font-size: 14px; transition: all 0.3s; gap: 10px; }
.sidebar-menu li a:hover, .sidebar-menu li a.active { color: #fff; background: #1890ff; }
.sidebar-menu li a .icon { width: 20px; text-align: center; font-size: 16px; }
.sidebar-menu .menu-group-title { padding: 16px 24px 8px; font-size: 12px; color: rgba(255,255,255,0.35); letter-spacing: 1px; }

/* 主区域与顶栏 */
.main-content { margin-left: 240px; flex: 1; min-height: 100vh; }
.topbar { height: 64px; background: #fff; display: flex; align-items: center; justify-content: space-between; padding: 0 24px; box-shadow: 0 1px 4px rgba(0,0,0,0.08); position: sticky; top: 0; z-index: 50; }
.topbar-left { font-size: 16px; font-weight: 500; }
.topbar-right { display: flex; align-items: center; gap: 16px; }
.topbar-right .user-info { display: flex; align-items: center; gap: 8px; }
.topbar-right .avatar { width: 32px; height: 32px; border-radius: 50%; background: #4facfe; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 14px; font-weight: 600; }
.btn-logout { padding: 6px 16px; background: #fff; border: 1px solid #d9d9d9; border-radius: 4px; cursor: pointer; font-size: 13px; color: #666; text-decoration: none; }
.btn-logout:hover { color: #4facfe; border-color: #4facfe; }

.page-content { padding: 24px; }
.breadcrumb { margin-bottom: 20px; font-size: 14px; color: #999; }
.breadcrumb a { color: #4facfe; }
.page-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.page-header h2 { font-size: 22px; }

/* 按钮 */
.btn-primary { padding: 10px 20px; background: #1890ff; border: none; border-radius: 6px; color: #fff; font-size: 14px; cursor: pointer; display: inline-flex; align-items: center; gap: 6px; }
.btn-primary:hover { background: #40a9ff; }
.btn-success { padding: 10px 24px; background: #52c41a; border: none; border-radius: 6px; color: #fff; font-size: 14px; cursor: pointer; }
.btn-default { padding: 10px 24px; background: #fff; border: 1px solid #d9d9d9; border-radius: 6px; color: #666; font-size: 14px; cursor: pointer; text-decoration: none; }
.btn-default:hover { border-color: #4facfe; color: #4facfe; }
.btn-search { padding: 8px 20px; background: #1890ff; border: none; border-radius: 6px; color: #fff; font-size: 14px; cursor: pointer; }
.btn-reset { padding: 8px 20px; background: #fff; border: 1px solid #d9d9d9; border-radius: 6px; font-size: 14px; cursor: pointer; color: #666; }
.btn-edit { background: #e6f7ff; color: #1890ff; }
.btn-delete { background: #fff1f0; color: #ff4d4f; }
.btn-edit, .btn-delete { padding: 4px 12px; border: none; border-radius: 4px; font-size: 13px; cursor: pointer; }
.btn-edit:hover { background: #bae7ff; }
.btn-delete:hover { background: #ffccc7; }
.btn-return { padding: 4px 12px; border: none; border-radius: 4px; font-size: 13px; cursor: pointer; background: #f6ffed; color: #52c41a; }

/* 卡片与工具栏 */
.card { background: #fff; border-radius: 10px; padding: 24px; box-shadow: 0 2px 8px rgba(0,0,0,0.06); }
.toolbar { background: #fff; border-radius: 10px; padding: 20px 24px; margin-bottom: 20px; box-shadow: 0 2px 8px rgba(0,0,0,0.06); display: flex; gap: 12px; align-items: flex-end; flex-wrap: wrap; }
.toolbar .search-group { display: flex; flex-direction: column; gap: 6px; }
.toolbar .search-group label { font-size: 13px; color: #666; }
.toolbar input, .toolbar select { padding: 8px 12px; border: 1px solid #d9d9d9; border-radius: 6px; font-size: 14px; outline: none; }
.toolbar input:focus, .toolbar select:focus { border-color: #4facfe; }

/* 表格 */
.table-card { background: #fff; border-radius: 10px; box-shadow: 0 2px 8px rgba(0,0,0,0.06); overflow: hidden; }
.table-card .table-header { padding: 16px 24px; display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid #f0f0f0; font-size: 14px; color: #999; }
table { width: 100%; border-collapse: collapse; }
table th, table td { padding: 14px 24px; text-align: left; font-size: 14px; border-bottom: 1px solid #f0f0f0; }
table th { background: #fafafa; color: #666; font-weight: 600; }
table tr:hover { background: #e6f7ff; }
.action-btns { display: flex; gap: 8px; }

/* 标签 */
.tag { display: inline-block; padding: 2px 10px; border-radius: 12px; font-size: 12px; }
.tag-blue { background: #e6f7ff; color: #1890ff; }
.tag-green { background: #f6ffed; color: #52c41a; }
.tag-orange { background: #fff7e6; color: #faad14; }
.tag-red { background: #fff1f0; color: #ff4d4f; }
.tag-gray { background: #f5f5f5; color: #999; }

/* 分页 */
.pagination { padding: 16px 24px; display: flex; justify-content: space-between; align-items: center; font-size: 14px; color: #999; }
.pagination .page-btns { display: flex; gap: 6px; }
.pagination .page-btn { min-width: 32px; height: 32px; padding: 0 8px; border: 1px solid #d9d9d9; border-radius: 4px; background: #fff; cursor: pointer; display: flex; align-items: center; justify-content: center; font-size: 14px; color: #666; }
.pagination .page-btn.active { background: #1890ff; border-color: #1890ff; color: #fff; }
.pagination .page-btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* 表单 */
.form-card { background: #fff; border-radius: 10px; padding: 30px; box-shadow: 0 2px 8px rgba(0,0,0,0.06); max-width: 700px; }
.form-card h3 { font-size: 18px; margin-bottom: 8px; padding-bottom: 16px; border-bottom: 1px solid #f0f0f0; }
.form-card h3 .sub { font-size: 13px; color: #999; font-weight: 400; margin-left: 8px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 24px; }
.form-row.single { grid-template-columns: 1fr; }
.form-group { display: flex; flex-direction: column; gap: 8px; }
.form-group label { font-size: 14px; color: #555; font-weight: 500; }
.form-group label .required { color: #ff4d4f; margin-left: 2px; }
.form-group input, .form-group select, .form-group textarea { padding: 10px 14px; border: 1px solid #d9d9d9; border-radius: 6px; font-size: 14px; outline: none; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: #4facfe; box-shadow: 0 0 0 2px rgba(79,172,254,0.1); }
.form-group textarea { resize: vertical; min-height: 80px; }
.form-group .help-text { font-size: 12px; color: #999; }
.form-actions { padding-top: 24px; border-top: 1px solid #f0f0f0; display: flex; gap: 12px; }
.hidden { display: none; }

/* 统计卡片 */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 30px; }
.stat-card { background: #fff; border-radius: 10px; padding: 24px; box-shadow: 0 2px 8px rgba(0,0,0,0.06); }
.stat-card .stat-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.stat-card .stat-title { font-size: 14px; color: #999; }
.stat-card .stat-value { font-size: 32px; font-weight: 700; margin-bottom: 8px; }
.stat-card .stat-desc { font-size: 13px; color: #999; }
.icon-blue { color: #4facfe; }
.icon-green { color: #52c41a; }
.icon-orange { color: #faad14; }
.icon-purple { color: #722ed1; }

/* 弹窗 */
.modal-overlay { display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.45); z-index: 1000; align-items: center; justify-content: center; }
.modal-overlay.show { display: flex; }
.modal { background: #fff; border-radius: 10px; padding: 30px; width: 400px; box-shadow: 0 8px 30px rgba(0,0,0,0.15); }
.modal h3 { font-size: 18px; margin-bottom: 12px; }
.modal p { color: #666; font-size: 14px; margin-bottom: 24px; line-height: 1.6; }
.modal-actions { display: flex; justify-content: flex-end; gap: 12px; }
.modal-actions button { padding: 8px 20px; border-radius: 6px; font-size: 14px; cursor: pointer; }
.btn-cancel { background: #fff; border: 1px solid #d9d9d9; color: #666; }
.btn-danger { background: #ff4d4f; border: none; color: #fff; }
.btn-danger:hover { background: #ff7875; }

/* 消息提示 */
.toast { position: fixed; top: 24px; left: 50%; transform: translateX(-50%); padding: 10px 24px; border-radius: 6px; color: #fff; z-index: 2000; font-size: 14px; box-shadow: 0 4px 12px rgba(0,0,0,0.15); }
.toast.success { background: #52c41a; }
.toast.error { background: #ff4d4f; }

/* 权限：普通用户隐藏一切写操作入口，只保留查询 */
.role-user .admin-only { display: none !important; }