:root {
  --primary: #0f766e;
  --primary-dark: #115e59;
  --primary-light: #ccfbf1;
  --bg: #f1f5f9;
  --card: #ffffff;
  --border: #e2e8f0;
  --text: #0f172a;
  --text-muted: #64748b;
  --danger: #dc2626;
  --ok: #16a34a;
  --warn: #d97706;
  --info: #2563eb;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* 布局 */
.layout { display: flex; min-height: 100vh; }
.sidebar {
  width: 210px; background: #0f172a; color: #cbd5e1; flex-shrink: 0;
  display: flex; flex-direction: column;
  position: sticky; top: 0; height: 100vh;
}
.brand { padding: 20px 18px; font-size: 16px; font-weight: 600; color: #fff; border-bottom: 1px solid #1e293b; }
.brand small { display: block; font-size: 11px; color: #64748b; font-weight: 400; margin-top: 4px; }
.nav { flex: 1; padding: 10px 0; }
.nav a {
  display: block; padding: 11px 18px; color: #cbd5e1; font-size: 14px;
  border-left: 3px solid transparent;
}
.nav a:hover { background: #1e293b; text-decoration: none; color: #fff; }
.nav a.active { background: #1e293b; color: #fff; border-left-color: #14b8a6; }
.nav-badge {
  display: inline-block; min-width: 16px; padding: 1px 5px; margin-left: 6px;
  border-radius: 999px; font-size: 11px; font-weight: 600; line-height: 14px; text-align: center;
  vertical-align: 1px;
}
.nav-badge-red { background: #dc2626; color: #fff; }
.nav-badge-warn { background: #f59e0b; color: #fff; }
.sidebar-foot { padding: 14px 18px; border-top: 1px solid #1e293b; font-size: 12px; color: #64748b; }

.main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.topbar {
  background: var(--card); border-bottom: 1px solid var(--border);
  padding: 14px 24px; display: flex; align-items: center; justify-content: space-between;
  position: sticky; top: 0; z-index: 10;
}
.topbar h1 { font-size: 17px; font-weight: 600; }
.content { padding: 24px; flex: 1; }

/* 卡片与表格 */
.card { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 20px; margin-bottom: 20px; }
.card h2 { font-size: 15px; margin-bottom: 14px; font-weight: 600; }
.card h3 { font-size: 14px; margin-bottom: 10px; font-weight: 600; }

table { width: 100%; border-collapse: collapse; }
th, td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--border); vertical-align: middle; }
th { background: #f8fafc; font-weight: 600; color: var(--text-muted); font-size: 13px; white-space: nowrap; }
tr:hover td { background: #f8fafc; }
td { font-size: 13.5px; }
.table-wrap { overflow-x: auto; }

/* 统计卡片 */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 16px; margin-bottom: 20px; }
.stat {
  background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 16px 18px;
}
.stat .num { font-size: 26px; font-weight: 700; margin-top: 6px; }
.stat .label { color: var(--text-muted); font-size: 13px; }
.stat.green .num { color: var(--ok); }
.stat.blue .num { color: var(--info); }
.stat.red .num { color: var(--danger); }
.stat.teal .num { color: var(--primary); }
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(360px, 1fr)); gap: 16px; }

/* 徽章 */
.badge { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 12px; font-weight: 500; }
.badge-ok { background: #dcfce7; color: #166534; }
.badge-warn { background: #fef3c7; color: #92400e; }
.badge-info { background: #dbeafe; color: #1e40af; }
.badge-danger { background: #fee2e2; color: #991b1b; }
.badge-gray { background: #e2e8f0; color: #475569; }

/* 按钮 */
.btn {
  display: inline-block; padding: 7px 14px; border-radius: 8px; border: 1px solid transparent;
  background: var(--primary); color: #fff; font-size: 13px; cursor: pointer; text-align: center;
  transition: background .15s;
}
.btn:hover { background: var(--primary-dark); text-decoration: none; color: #fff; }
.btn-sm { padding: 4px 10px; font-size: 12px; border-radius: 6px; }
.btn-outline { background: #fff; color: var(--primary); border-color: var(--primary); }
.btn-outline:hover { background: var(--primary-light); }
.btn-danger { background: var(--danger); }
.btn-danger:hover { background: #b91c1c; }
.btn-ghost { background: #fff; color: var(--text-muted); border-color: var(--border); }
.btn-ghost:hover { background: #f8fafc; color: var(--text); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); color: #fff; }

/* 报表 */
.text-green { color: #12a150; }
.text-red { color: #e5484d; }
.tr-total td { background: #f8fafc; font-weight: 600; }

/* 表单 */
label { display: block; font-size: 13px; color: var(--text-muted); margin-bottom: 6px; }
input[type=text], input[type=password], input[type=number], select, textarea {
  width: 100%; padding: 9px 12px; border: 1px solid var(--border); border-radius: 8px;
  font-size: 14px; background: #fff; color: var(--text); outline: none;
}
input:focus, select:focus, textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(15,118,110,.12); }
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; }
.form-group { margin-bottom: 14px; }
.hint { font-size: 12px; color: var(--text-muted); margin-top: 4px; }

/* 提示条 */
.alert { padding: 12px 16px; border-radius: 8px; margin-bottom: 16px; font-size: 13.5px; background: #f1f5f9; border: 1px solid var(--border); }
.alert-ok { background: #dcfce7; color: #166534; border: 1px solid #bbf7d0; }
.alert-error { background: #fee2e2; color: #991b1b; border: 1px solid #fecaca; }
.alert-info { background: #dbeafe; color: #1e40af; border: 1px solid #bfdbfe; }

/* 筛选条 */
.filters { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-bottom: 16px; }
.filters select, .filters input { width: auto; }
.pagination { display: flex; gap: 6px; align-items: center; margin-top: 16px; flex-wrap: wrap; }
.pagination a, .pagination span {
  padding: 5px 11px; border: 1px solid var(--border); border-radius: 6px; font-size: 13px; background: #fff; color: var(--text);
}
.pagination a:hover { border-color: var(--primary); color: var(--primary); text-decoration: none; }
.pagination .cur { background: var(--primary); color: #fff; border-color: var(--primary); }

/* 分类树/商品 */
.cat-row {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 12px 14px; border: 1px solid var(--border); border-radius: 8px; margin-bottom: 8px; background: #fff;
  flex-wrap: wrap;
}
.cat-row .name { font-weight: 600; }
.cat-row .meta { color: var(--text-muted); font-size: 12.5px; }
.cat-row .ops { display: flex; gap: 8px; flex-wrap: wrap; }
.check-label { display: inline-flex; align-items: center; gap: 6px; cursor: pointer; font-size: 13px; color: var(--text-muted); }
.check-label input { width: 15px; height: 15px; accent-color: var(--primary); cursor: pointer; }
.tag-chip {
  display: inline-block; padding: 4px 12px; border-radius: 999px; background: var(--primary-light);
  color: var(--primary-dark); font-size: 12.5px; margin: 0 6px 8px 0; cursor: pointer; border: 1px solid transparent;
}
.tag-chip.active { background: var(--primary); color: #fff; }

/* 详情 */
.detail-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px 24px; }
.detail-item { padding: 10px 0; border-bottom: 1px dashed var(--border); }
.detail-item .k { color: var(--text-muted); font-size: 12.5px; }
.detail-item .v { font-size: 14px; margin-top: 3px; word-break: break-all; }

/* 登录页 */
.login-page {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #0f172a 0%, #134e4a 100%);
}
.login-box { width: 360px; background: #fff; border-radius: 14px; padding: 34px 32px; box-shadow: 0 20px 60px rgba(0,0,0,.25); }
.login-box h1 { font-size: 19px; margin-bottom: 4px; }
.login-box .sub { color: var(--text-muted); font-size: 13px; margin-bottom: 24px; }

.mono { font-family: Consolas, Menlo, monospace; font-size: 13px; }
.text-muted { color: var(--text-muted); }
.text-primary { color: var(--primary); }
.text-sm { font-size: 12.5px; }
.mt-16 { margin-top: 16px; }
.mb-16 { margin-bottom: 16px; }
.flex { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.empty { text-align: center; color: var(--text-muted); padding: 40px 0; }

/* 移动端适配：汉堡菜单 + 抽屉式侧边栏 + 触控友好 */
.menu-btn {
  display: none; background: #fff; border: 1px solid var(--border); border-radius: 8px;
  font-size: 16px; padding: 6px 10px; cursor: pointer; color: var(--text);
}
.sidebar-mask { display: none; }

@media (max-width: 860px) {
  .menu-btn { display: inline-block; }
  .sidebar {
    position: fixed; left: 0; top: 0; bottom: 0; z-index: 120; width: 230px;
    transform: translateX(-105%); transition: transform .22s ease;
    height: 100vh; overflow-y: auto;
  }
  .layout.sidebar-open .sidebar { transform: none; }
  .sidebar-mask {
    display: none; position: fixed; inset: 0; background: rgba(15,23,42,.45);
    z-index: 110; cursor: pointer;
  }
  .layout.sidebar-open .sidebar-mask { display: block; }
  .main { width: 100%; }
  .topbar { padding: 10px 12px; }
  .content { padding: 12px; }
  .card { padding: 14px; }
  .grid-2 { grid-template-columns: 1fr; }
  .btn { padding: 8px 14px; font-size: 14px; }
  .btn-sm { padding: 6px 10px; font-size: 13px; }
  th, td { padding: 8px 8px; }
  .filters { gap: 8px; }
  .filters .btn, .filters form { margin-bottom: 0; }
  .topbar .flex { gap: 8px; }
  .detail-grid { grid-template-columns: 1fr 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stat .num { font-size: 22px; }
}
@media (max-width: 480px) {
  .detail-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; gap: 10px; }
  .stat { padding: 12px; }
  .stat .num { font-size: 20px; }
  .topbar h1 { font-size: 15px; }
  .topbar .text-sm { display: none; } /* 手机上隐藏时间/用户信息，保留核心操作 */
}