:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --line: #e6e8eb;
  --text: #1f2329;
  --muted: #8a9099;
  --orange: #ee7800;
  --blue: #185fa5;
  --ok: #1d9e75;
  --bad: #e24b4a;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  -webkit-text-size-adjust: 100%;
}
button {
  cursor: pointer;
  border: none;
  border-radius: 8px;
  background: var(--orange);
  color: #fff;
  padding: 9px 16px;
  font-size: 14px;
}
button:disabled { opacity: .5; cursor: not-allowed; }
button.mini { background: #fff; color: var(--blue); border: 1px solid var(--line); padding: 5px 10px; font-size: 13px; }
input, textarea, select {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 9px 10px;
  font-size: 14px;
  width: 100%;
  font-family: inherit;
}
textarea { resize: vertical; }

/* ===== 登录/引导 ===== */
.auth-view {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  padding: 16px;
}
.auth-card {
  width: 100%; max-width: 380px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 28px 24px;
  box-shadow: 0 6px 24px rgba(0,0,0,.06);
}
.auth-card h2 { margin: 6px 0 18px; font-size: 18px; font-weight: 500; }
.auth-card input, .auth-card textarea { margin-bottom: 12px; }
.auth-card .hint { color: var(--muted); font-size: 12px; margin: 10px 0 0; line-height: 1.6; }
.msg { font-size: 13px; min-height: 18px; margin-top: 6px; }
.msg.bad { color: var(--bad); }
.msg.ok { color: var(--ok); }
.brand { display: flex; align-items: center; gap: 8px; }
.brand .logo { font-size: 20px; font-weight: 600; color: var(--orange); }
.brand .sub { font-size: 12px; color: var(--muted); }

/* ===== 顶栏 sticky ===== */
.top-wrap {
  position: sticky; top: 0; z-index: 20;
  display: flex; justify-content: space-between; align-items: center;
  padding: 10px 16px;
  background: var(--card);
  border-bottom: 2px solid var(--orange);
}
.top-right { display: flex; align-items: center; gap: 8px; }
.who { font-size: 13px; color: var(--muted); }

/* ===== Tabs ===== */
.tabs {
  position: sticky; top: 52px; z-index: 19;
  display: flex; gap: 4px;
  background: var(--card);
  border-bottom: 1px solid var(--line);
  padding: 0 8px;
  overflow-x: auto;
}
.tab-btn {
  background: transparent; color: var(--muted);
  border-radius: 0; padding: 12px 14px; font-size: 14px;
  border-bottom: 2px solid transparent; white-space: nowrap;
}
.tab-btn.active { color: var(--orange); border-bottom-color: var(--orange); }

.tab-content { display: none; padding: 16px; }
.tab-content.active { display: block; }
.tab-actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-bottom: 12px; }
.tab-actions input[type=number] { width: 70px; }
.auto { display: flex; align-items: center; gap: 5px; font-size: 13px; color: var(--text); }
.auto input { width: auto; }
.status { font-size: 13px; margin-bottom: 10px; color: var(--muted); }
.status.bad { color: var(--bad); }
.status.ok { color: var(--ok); }
.hint { color: var(--muted); font-size: 12px; }

/* ===== 离线监控 ===== */
.mall-card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; margin-bottom: 12px; }
.mall-card h3 { margin: 0 0 8px; font-size: 15px; font-weight: 500; }
.mall-card .stats { display: flex; flex-wrap: wrap; gap: 12px; font-size: 13px; }
.mall-card .stats b { color: var(--orange); }
.offline-list { margin-top: 8px; font-size: 12px; color: var(--bad); }
.offline-list .off-item { padding: 5px 8px; margin-top: 4px; background: rgba(220,53,69,0.08); border-left: 3px solid var(--bad); border-radius: 4px; line-height: 1.5; word-break: break-all; }

/* ===== 分钟级 ===== */
.query-bar { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin: 12px 0; }
.query-bar label { font-size: 13px; color: var(--muted); display: flex; align-items: center; gap: 4px; }
.query-bar input, .query-bar select { width: auto; }
.mall-group { border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; margin-bottom: 10px; }
.mall-group h4 { margin: 0 0 8px; font-size: 14px; }
.ch-group { margin-left: 12px; font-size: 13px; }
.ch-item { display: inline-block; margin: 3px 6px 3px 0; }
table.tbl { width: 100%; border-collapse: collapse; font-size: 13px; margin-top: 10px; }
table.tbl th, table.tbl td { border: 1px solid var(--line); padding: 6px 8px; text-align: left; }
table.tbl th { background: #fafafa; }
.summary-cards { display: flex; flex-wrap: wrap; gap: 10px; margin: 10px 0; }
.summary-cards .sc { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 10px 14px; min-width: 110px; }
.summary-cards .sc b { display: block; font-size: 18px; color: var(--orange); }

/* ===== 实时监测 ===== */
.rt-mall { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; margin-bottom: 12px; }
.rt-mall h3 { margin: 0 0 8px; font-size: 15px; }
.rt-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; font-size: 13px; }
.rt-grid .cell b { display: block; font-size: 17px; color: var(--blue); }
.rt-bar-row { display: flex; align-items: center; gap: 8px; font-size: 12px; margin: 4px 0; }
.rt-bar-row .name { width: 120px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.rt-bar { height: 12px; background: var(--orange); border-radius: 6px; }

/* ===== 飞书 ===== */
#tab-feishu input { margin-bottom: 10px; }

/* ===== 管理员 ===== */
.admin-add { display: flex; flex-wrap: wrap; gap: 10px; padding: 16px; align-items: center; }
.admin-add input, .admin-add select { width: auto; }
.user-row { display: flex; justify-content: space-between; align-items: center; gap: 10px; padding: 10px 16px; border-bottom: 1px solid var(--line); background: var(--card); }
.user-row .u-info { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.user-row .u-name { font-size: 14px; }
.user-row .u-role { font-size: 12px; color: var(--muted); margin-left: 4px; }
.user-row .u-actions { display: flex; gap: 6px; flex-wrap: wrap; justify-content: flex-end; }
.user-row button { padding: 5px 10px; font-size: 13px; }
.btn-edit { background: #fff; color: var(--blue); border: 1px solid var(--blue); }
.btn-reset { background: #fff; color: var(--orange); border: 1px solid var(--orange); }
.btn-del { background: #fff; color: var(--bad); border: 1px solid var(--bad); }

/* ===== Toast ===== */
.toast {
  position: fixed; left: 50%; bottom: 30px; transform: translateX(-50%);
  background: rgba(0,0,0,.8); color: #fff; padding: 10px 18px; border-radius: 8px;
  font-size: 13px; opacity: 0; pointer-events: none; transition: opacity .2s; z-index: 50;
}
.toast.show { opacity: 1; }

/* ===== 移动端适配 ===== */
@media (max-width: 640px) {
  .top-wrap { padding: 8px 12px; }
  .brand .sub { display: none; }
  .tab-content { padding: 12px; }
  .query-bar label { width: 100%; }
  .query-bar input, .query-bar select { flex: 1; }
  .rt-grid { grid-template-columns: repeat(2, 1fr); }
  .rt-bar-row .name { width: 90px; }
  .tab-actions input[type=number] { width: 60px; }
  /* 移动端 Tab 到底部导航 */
  .tabs {
    position: fixed; bottom: 0; top: auto; left: 0; right: 0;
    border-bottom: none; border-top: 1px solid var(--line);
    background: var(--card); padding: 0; justify-content: space-around;
  }
  .tab-btn { flex: 1; padding: 12px 4px; font-size: 13px; }
  .tab-content { padding-bottom: 70px; }
  .top-wrap { position: sticky; top: 0; }
}

/* ===== 管理员：分管广场分配 ===== */
.mall-assign { margin: 10px 0; border: 1px solid var(--line); border-radius: 8px; background: var(--card); }
.mall-assign > summary { cursor: pointer; padding: 10px 14px; font-weight: 600; }
.mall-assign-box { padding: 4px 14px 14px; display: flex; flex-wrap: wrap; gap: 8px 16px; }
.mall-assign-item { font-size: 13px; display: inline-flex; align-items: center; gap: 4px; }
.u-malls { color: var(--muted); font-size: 12px; margin-left: 8px; }

/* ===== 弹窗 ===== */
.modal { position: fixed; inset: 0; background: rgba(0,0,0,.4); display: flex; align-items: center; justify-content: center; padding: 16px; z-index: 60; }
.modal-card { background: var(--card); border-radius: 12px; padding: 20px; width: 100%; max-width: 420px; box-shadow: 0 8px 32px rgba(0,0,0,.2); }
.modal-card h3 { margin: 0 0 14px; font-size: 16px; font-weight: 500; }
.modal-card label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 8px; }
.modal-card input, .modal-card select { width: 100%; margin-top: 4px; }
.modal-actions { display: flex; gap: 10px; margin-top: 16px; }
.modal-actions button { flex: 1; }