:root {
  --primary: #2563eb;
  --primary-dark: #1e40af;
  --primary-light: #dbeafe;
  --success: #16a34a;
  --danger: #dc2626;
  --warning: #d97706;
  --info: #0891b2;
  --bg: #f3f4f6;
  --card: #ffffff;
  --border: #e5e7eb;
  --text: #1f2937;
  --text-muted: #6b7280;
  --sidebar-bg: #0f172a;
  --sidebar-text: #cbd5e1;
  --sidebar-active: #1e293b;
  --sidebar-hover: #1e293b;
  --sidebar-module: #facc15;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; height: 100%; overflow: hidden; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
  background: var(--bg); color: var(--text); font-size: 14px; line-height: 1.6;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
button, input, select, textarea { font-family: inherit; font-size: 14px; }

/* ---- 顶部 ---- */
.topbar { background: #fff; border-bottom: 1px solid var(--border);
  height: 52px; display: flex; align-items: center; padding: 0 18px;
  position: sticky; top: 0; z-index: 100; }
.topbar .brand { font-weight: 600; font-size: 16px; color: var(--primary); }
.topbar .spacer { flex: 1; }
.topbar .user-menu { display: flex; align-items: center; gap: 14px; }
.topbar .user-name { font-size: 13px; color: var(--text); }
.topbar .user-name small { color: var(--text-muted); display: block; font-size: 11px; }

/* ---- 布局 ---- */
.layout { display: flex; height: calc(100vh - 52px); overflow: hidden; }
.sidebar { width: 220px; background: var(--sidebar-bg); color: var(--sidebar-text);
  flex-shrink: 0; padding: 8px 0 0; overflow-y: auto; height: 100%; display: flex; flex-direction: column; }
.sidebar .nav-item { padding: 9px 16px; display: flex; align-items: center; gap: 10px;
  color: var(--sidebar-text); cursor: pointer; font-size: 13px; border-left: 3px solid transparent; }
.sidebar .nav-item:hover { background: var(--sidebar-hover); text-decoration: none; }
.sidebar .nav-module { font-weight: 600; color: #fff; font-size: 14px;
  border-left: 3px solid transparent; }
.sidebar .nav-module .icon { font-size: 16px; }
.sidebar .nav-item.active { background: var(--sidebar-active); border-left-color: var(--sidebar-module); color: #fff; }
.sidebar .nav-item .icon { width: 18px; display: inline-block; text-align: center; }
.sidebar .nav-sub { padding-left: 38px; font-size: 13px; color: var(--sidebar-text); }
.sidebar .nav-sub.active { color: #fff; background: var(--sidebar-active); }
.sidebar .nav-section { padding: 10px 16px 4px; color: #94a3b8; font-size: 11px;
  text-transform: uppercase; letter-spacing: .5px; }
.sidebar .arrow { margin-left: auto; transition: transform .15s; font-size: 11px;
  padding: 4px 2px; cursor: pointer; user-select: none; }
.sidebar .nav-group:not(.expanded) .arrow { transform: rotate(-90deg); }
.sidebar .nav-children { display: none; }
.sidebar .expanded .nav-children { display: block; }
.sidebar-footer { padding: 12px 16px; font-size: 11px; color: #64748b;
  text-align: center; border-top: 1px solid #1e293b; position: sticky; bottom: 0;
  margin-top: auto; background: var(--sidebar-bg); flex-shrink: 0; }

.main { flex: 1; padding: 20px 24px; min-width: 0; overflow-y: auto; height: 100%; }

/* ---- 卡片 / 面板 ---- */
.card { background: var(--card); border: 1px solid var(--border); border-radius: 6px;
  margin-bottom: 16px; }
.card-header { padding: 10px 16px; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 10px; }
.card-header h3 { margin: 0; font-size: 15px; }
.card-header .actions { margin-left: auto; display: flex; gap: 8px; align-items: center; }
.card-body { padding: 16px; }
.card-body.no-pad { padding: 0; }

/* ---- 按钮 ---- */
.btn { display: inline-flex; align-items: center; gap: 4px; padding: 6px 14px;
  border: 1px solid var(--border); background: #fff; color: var(--text);
  border-radius: 4px; cursor: pointer; font-size: 13px; line-height: 1.5;
  text-decoration: none; }
.btn:hover { background: #f9fafb; text-decoration: none; }
.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-dark); }
.btn-success { background: var(--success); color: #fff; border-color: var(--success); }
.btn-danger { background: var(--danger); color: #fff; border-color: var(--danger); }
.btn-warning { background: var(--warning); color: #fff; border-color: var(--warning); }
.btn-link { border: none; background: none; color: var(--primary); padding: 2px 4px; }
.btn-link:hover { text-decoration: underline; }
.btn-sm { padding: 3px 8px; font-size: 12px; }
.btn-xs { padding: 1px 6px; font-size: 11px; }
.btn.disabled, .btn:disabled { opacity: .5; cursor: not-allowed; }

/* ---- 表格 ---- */
.table { width: 100%; border-collapse: collapse; font-size: 13px; }
.table th, .table td { padding: 8px 12px; text-align: left; border-bottom: 1px solid var(--border);
  vertical-align: top; }
.table th { background: #f9fafb; font-weight: 600; color: #374151; white-space: nowrap; }
.table tbody tr:hover { background: #f9fafb; }
.table-striped tbody tr:nth-child(even) { background: #fbfbfc; }
.table .actions { white-space: nowrap; }
.table .num { text-align: right; font-variant-numeric: tabular-nums; }
.text-muted { color: var(--text-muted); }
.text-danger { color: var(--danger); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-right { text-align: right; }
.text-center { text-align: center; }
.nowrap { white-space: nowrap; }
.hidden-field { display: none !important; }

/* ---- 表单 ---- */
.form-row { margin-bottom: 12px; }
.form-row label { display: block; margin-bottom: 4px; font-weight: 500; color: #374151; }
.form-row label .req { color: var(--danger); }
.form-control, select.form-control, textarea.form-control {
  width: 100%; max-width: 100%; padding: 7px 10px; border: 1px solid #d1d5db; border-radius: 4px;
  background: #fff; }
.form-control:focus, .form-control:focus-visible { outline: none; border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,.1); }
textarea.form-control {
  min-height: 80px; resize: vertical;
  overflow-wrap: anywhere; word-break: break-word; white-space: pre-wrap;
}
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }
/* 防止 grid 子项按内容固有宽度撑开，编辑 textarea 时触发布局死循环卡死浏览器 */
.form-grid > .form-row { min-width: 0; }
.form-grid .full { grid-column: 1 / -1; }
.form-actions { margin-top: 16px; display: flex; gap: 8px; align-items: center; }
.help { color: var(--text-muted); font-size: 12px; margin-top: 3px; }
.field-disabled { position: relative; }
.field-disabled::after { content: '无查看权限'; position: absolute; inset: 0; background: rgba(243,244,246,.7);
  display: flex; align-items: center; justify-content: center; color: var(--text-muted); font-size: 11px; }

/* ---- 工具栏 / 筛选 ---- */
.toolbar { display: flex; gap: 10px; align-items: center; margin-bottom: 14px; flex-wrap: wrap; }
.toolbar .left { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.toolbar .right { margin-left: auto; display: flex; gap: 8px; align-items: center; }
.toolbar input, .toolbar select { padding: 6px 10px; border: 1px solid #d1d5db; border-radius: 4px; }

/* ---- 分页 ---- */
.pagination { display: flex; gap: 4px; align-items: center; justify-content: space-between;
  margin-top: 12px; font-size: 13px; }
.pagination .pages a, .pagination .pages span {
  display: inline-block; padding: 4px 10px; border: 1px solid var(--border); border-radius: 3px; }
.pagination .pages a:hover { background: #f3f4f6; text-decoration: none; }
.pagination .pages .current { background: var(--primary); color: #fff; border-color: var(--primary); }
.pagination .pages .disabled { color: #cbd5e1; cursor: not-allowed; }

/* ---- 提示 ---- */
.alert { padding: 10px 14px; border-radius: 4px; margin-bottom: 14px; border: 1px solid transparent; }
.alert-success { background: #dcfce7; color: #166534; border-color: #86efac; }
.alert-danger { background: #fee2e2; color: #991b1b; border-color: #fca5a5; }
.alert-warning { background: #fef3c7; color: #92400e; border-color: #fcd34d; }
.alert-info { background: #dbeafe; color: #1e40af; border-color: #93c5fd; }

/* ---- 徽章 ---- */
.badge { display: inline-block; padding: 2px 8px; border-radius: 10px; font-size: 11px;
  background: #e5e7eb; color: #374151; }
.badge-success { background: #dcfce7; color: #166534; }
.badge-warning { background: #fef3c7; color: #92400e; }
.badge-danger { background: #fee2e2; color: #991b1b; }
.badge-info { background: #dbeafe; color: #1e40af; }

/* ---- 详情页 ---- */
.detail-table { width: 100%; }
.detail-table th { width: 160px; background: #f9fafb; }
.detail-table td, .detail-table th { padding: 9px 12px; border-bottom: 1px solid var(--border); }
.detail-table tr:last-child td, .detail-table tr:last-child th { border-bottom: none; }

/* 公司详情：分区紧凑网格 */
.company-detail { display: flex; flex-direction: column; gap: 14px; }
.detail-section { border: 1px solid var(--border); border-radius: 6px; overflow: hidden; background: #fff; }
.detail-section-title {
  padding: 8px 14px; background: #f3f4f6; font-weight: 600; font-size: 13px;
  border-bottom: 1px solid var(--border); color: #111827;
}
.detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.detail-item {
  display: grid;
  grid-template-columns: 108px minmax(0, 1fr);
  gap: 8px;
  padding: 7px 12px;
  border-bottom: 1px solid var(--border);
  border-right: 1px solid var(--border);
  font-size: 13px;
  align-items: start;
  min-height: 36px;
}
.detail-item:nth-child(2n) { border-right: none; }
.detail-item.full { grid-column: 1 / -1; border-right: none; }
.detail-item .k { color: var(--text-muted); line-height: 1.4; }
.detail-item .v { color: #111827; word-break: break-word; line-height: 1.4; }
.detail-section .detail-grid > .detail-item:nth-last-child(-n+2):not(.full) {
  border-bottom: none;
}
.detail-section .detail-grid > .detail-item.full:last-child,
.detail-section .detail-grid > .detail-item:last-child {
  border-bottom: none;
}
.upload-box {
  border-top: 1px dashed var(--border);
  padding-top: 14px;
}

@media (max-width: 900px) {
  .detail-grid { grid-template-columns: 1fr; }
  .detail-item { border-right: none !important; }
  .detail-section .detail-grid > .detail-item:nth-last-child(-n+2):not(.full) {
    border-bottom: 1px solid var(--border);
  }
  .detail-section .detail-grid > .detail-item:last-child { border-bottom: none; }
}

/* ---- 统计卡 ---- */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px; }
.stat-card { background: #fff; border: 1px solid var(--border); border-radius: 6px; padding: 14px 16px; }
.stat-card .label { color: var(--text-muted); font-size: 12px; }
.stat-card .value { font-size: 22px; font-weight: 600; margin-top: 4px; }
.stat-card .value.text-primary { color: var(--primary); }
.stat-card .value.text-success { color: var(--success); }
.stat-card .value.text-warning { color: var(--warning); }
.stat-card .value.text-danger { color: var(--danger); }

/* ---- 登录 ---- */
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #1e3a8a 0%, #0f172a 100%); }
.login-box { width: 360px; background: #fff; border-radius: 8px; padding: 32px 28px;
  box-shadow: 0 12px 40px rgba(0,0,0,.3); }
.login-box h1 { margin: 0 0 4px; font-size: 20px; color: var(--primary); text-align: center; }
.login-box .sub { text-align: center; color: var(--text-muted); font-size: 12px; margin-bottom: 22px; }
.login-box .btn-primary { width: 100%; justify-content: center; padding: 9px; }
.login-box .form-row { margin-bottom: 14px; }

/* ---- Tabs ---- */
.tabs { display: flex; gap: 2px; border-bottom: 2px solid var(--border); margin-bottom: 16px; }
.tabs a { padding: 8px 16px; border-bottom: 2px solid transparent; margin-bottom: -2px; color: var(--text-muted); }
.tabs a.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 500; }

/* ---- 树形权限 ---- */
.perm-tree { font-size: 13px; }
.perm-tree .perm-node { padding: 4px 0; }
.perm-tree .perm-children { margin-left: 22px; }
.perm-tree label { display: inline-flex; align-items: center; gap: 6px; cursor: pointer; }

.empty { text-align: center; padding: 32px; color: var(--text-muted); font-size: 13px; }
.pre-wrap { white-space: pre-wrap; word-break: break-word; font-family: ui-monospace, "Consolas", monospace;
  font-size: 12px; background: #f9fafb; padding: 10px; border-radius: 4px; border: 1px solid var(--border); }

@media (max-width: 768px) {
  .sidebar { position: fixed; left: -240px; height: 100%; z-index: 200; transition: left .2s; }
  .sidebar.open { left: 0; }
  .form-grid { grid-template-columns: 1fr; }
}