:root {
  --bg: #f2f4f7; --panel: #fff; --panel-2: #f8fafc; --line: #e1e6ed; --text: #17202b; --muted: #5f6b7d;
  --faint: #98a2b3; --accent: #2563eb; --accent-weak: #e7eeff; --ok: #15803d; --ok-weak: #e3f5e9;
  --warn: #b45309; --warn-weak: #fdf1d9; --bad: #c62828; --bad-weak: #fde9e9;
  --shadow: 0 10px 34px rgba(15, 23, 42, .16); --shadow-sm: 0 1px 2px rgba(15, 23, 42, .06);
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0d1116; --panel: #151a21; --panel-2: #1a2029; --line: #29313c; --text: #e5e9ef; --muted: #9aa4b2;
    --faint: #6b7686; --accent: #6d9bff; --accent-weak: #1d2a44; --ok: #4ade80; --ok-weak: #16301f;
    --warn: #fbbf24; --warn-weak: #3a2c10; --bad: #f87171; --bad-weak: #3d1a1a;
    --shadow: 0 10px 34px rgba(0, 0, 0, .5); --shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0d1116; --panel: #151a21; --panel-2: #1a2029; --line: #29313c; --text: #e5e9ef; --muted: #9aa4b2;
  --faint: #6b7686; --accent: #6d9bff; --accent-weak: #1d2a44; --ok: #4ade80; --ok-weak: #16301f;
  --warn: #fbbf24; --warn-weak: #3a2c10; --bad: #f87171; --bad-weak: #3d1a1a;
  --shadow: 0 10px 34px rgba(0, 0, 0, .5); --shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--text); font: 14px/1.5 -apple-system, BlinkMacSystemFont, "PingFang SC",
  "Microsoft YaHei", "Segoe UI", sans-serif; }
a { color: var(--accent); text-decoration: none; }
.num { font-variant-numeric: tabular-nums; }
.mono { font-family: var(--mono); font-size: 12.5px; }
.muted { color: var(--muted); } .faint { color: var(--faint); }

/* buttons & inputs */
.btn { display: inline-flex; align-items: center; gap: 6px; height: 34px; padding: 0 14px; border-radius: 8px;
  border: 1px solid var(--line); background: var(--panel); color: var(--text); font: inherit; cursor: pointer;
  white-space: nowrap; }
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { filter: brightness(1.08); }
.btn.danger { color: var(--bad); }
.btn.danger:hover { border-color: var(--bad); }
.btn.sm { height: 28px; padding: 0 10px; font-size: 13px; }
.btn.ghost { border-color: transparent; background: transparent; }
.btn:disabled { opacity: .5; cursor: default; }
label.field { display: grid; gap: 4px; font-size: 13px; color: var(--muted); }
label.field small { color: var(--faint); }
input, select, textarea { height: 36px; padding: 0 10px; border: 1px solid var(--line); border-radius: 8px;
  background: var(--panel); color: var(--text); font: inherit; width: 100%; }
textarea { height: 70px; padding: 8px 10px; resize: vertical; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent-weak); border-color: var(--accent); }

/* login */
.login-wrap { min-height: 100vh; display: grid; place-items: center; padding: 24px 16px; }
.login-card { width: 100%; max-width: 380px; background: var(--panel); border: 1px solid var(--line);
  border-radius: 14px; padding: 32px 28px 26px; box-shadow: var(--shadow); }
.login-card h1 { margin: 0 0 4px; font-size: 22px; }
.login-card p.sub { margin: 0 0 22px; color: var(--muted); }
.login-card form { display: grid; gap: 14px; }
.login-card .btn { width: 100%; justify-content: center; height: 40px; font-size: 15px; }
.err { color: var(--bad); font-size: 13px; min-height: 18px; }
.brand-dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; background: var(--ok);
  margin-right: 8px; vertical-align: middle; }

/* admin layout */
.top { position: sticky; top: 0; z-index: 5; display: flex; align-items: center; gap: 16px; padding: 0 20px;
  height: 56px; background: var(--panel); border-bottom: 1px solid var(--line); }
.top .title { font-weight: 600; font-size: 16px; }
.top nav { display: flex; gap: 4px; margin-left: 12px; }
.top nav button { height: 32px; padding: 0 12px; border-radius: 8px; border: 0; background: transparent;
  color: var(--muted); font: inherit; cursor: pointer; }
.top nav button.on { background: var(--accent-weak); color: var(--accent); font-weight: 600; }
.top .right { margin-left: auto; display: flex; align-items: center; gap: 8px; color: var(--muted); }
main { max-width: 1280px; margin: 0 auto; padding: 20px; display: grid; gap: 16px; }
.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; }
.kpi { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px;
  box-shadow: var(--shadow-sm); }
.kpi .k { color: var(--muted); font-size: 12.5px; }
.kpi .v { font-size: 24px; font-weight: 600; margin-top: 2px; }
.kpi .v.warn { color: var(--warn); } .kpi .v.bad { color: var(--bad); } .kpi .v.ok { color: var(--ok); }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow-sm);
  overflow: hidden; }
.panel-head { display: flex; align-items: center; gap: 10px; padding: 14px 16px; border-bottom: 1px solid var(--line); }
.panel-head h2 { margin: 0; font-size: 15px; }
.panel-head .grow { flex: 1; }
.panel-head input { max-width: 240px; height: 32px; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--line); vertical-align: middle;
  white-space: nowrap; }
th { font-weight: 500; color: var(--muted); font-size: 12.5px; background: var(--panel-2); }
tr:last-child td { border-bottom: 0; }
tbody tr:hover { background: var(--panel-2); }
td .sub { display: block; color: var(--faint); font-size: 12px; }
td.ops { text-align: right; }
td.ops .btn { margin-left: 4px; }
.empty { padding: 40px; text-align: center; color: var(--faint); }

.badge { display: inline-flex; align-items: center; height: 22px; padding: 0 8px; border-radius: 11px; font-size: 12px;
  background: var(--panel-2); color: var(--muted); border: 1px solid var(--line); }
.badge.ok { background: var(--ok-weak); color: var(--ok); border-color: transparent; }
.badge.warn { background: var(--warn-weak); color: var(--warn); border-color: transparent; }
.badge.bad { background: var(--bad-weak); color: var(--bad); border-color: transparent; }
.dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--faint); margin-right: 6px; }
.dot.ok { background: var(--ok); } .dot.bad { background: var(--bad); } .dot.warn { background: var(--warn); }
.meter { display: inline-flex; align-items: center; gap: 8px; }
.meter .bar { width: 70px; height: 6px; border-radius: 3px; background: var(--line); overflow: hidden; }
.meter .bar i { display: block; height: 100%; background: var(--accent); }
.meter .bar i.full { background: var(--warn); }

/* modal */
.mask { position: fixed; inset: 0; background: rgba(15, 23, 42, .45); display: grid; place-items: center;
  padding: 16px; z-index: 50; }
.modal { width: 100%; max-width: 480px; background: var(--panel); border-radius: 14px; box-shadow: var(--shadow);
  border: 1px solid var(--line); max-height: calc(100vh - 32px); overflow: auto; }
.modal h3 { margin: 0; padding: 18px 20px 0; font-size: 16px; }
.modal .body { padding: 14px 20px; display: grid; gap: 12px; }
.modal .grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.modal .foot { padding: 12px 20px 18px; display: flex; justify-content: flex-end; gap: 8px; }
.modal p { margin: 0; color: var(--muted); }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }

.toasts { position: fixed; right: 16px; bottom: 16px; display: grid; gap: 8px; z-index: 60; }
.toast { padding: 10px 14px; border-radius: 10px; background: var(--panel); border: 1px solid var(--line);
  box-shadow: var(--shadow); max-width: 360px; }
.toast.ok { border-left: 4px solid var(--ok); } .toast.bad { border-left: 4px solid var(--bad); }

@media (max-width: 720px) {
  .top { padding: 0 12px; gap: 8px; }
  .top nav { margin-left: 0; }
  .top .right .who { display: none; }
  main { padding: 12px 16px; }
  .modal .grid2 { grid-template-columns: 1fr; }
  .panel-head { flex-wrap: wrap; }
  .panel-head input { max-width: none; }
}