:root {
  --bg: #0b1220;
  --bg-soft: #121c2e;
  --panel: #16223a;
  --panel-2: #1c2a45;
  --line: #253553;
  --fg: #e8eefc;
  --muted: #8ba0c4;
  --accent: #4f8cff;
  --accent-2: #29d3a2;
  --warn: #f3b13a;
  --bad: #ff6161;
  --ok: #38d39f;
  --radius: 12px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: radial-gradient(1200px 600px at 20% -10%, #1a2b4d 0%, var(--bg) 55%) fixed;
  color: var(--fg);
  font: 14px/1.55 -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}

.hidden { display: none !important; }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin: 8px 0; }
.col { display: flex; flex-direction: column; gap: 8px; margin-bottom: 10px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 1100px) { .grid2 { grid-template-columns: 1fr; } }

/* ── 登录 ─────────────────────────────────────── */
.login-wrap { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.login-card {
  width: min(420px, 100%); background: var(--panel); border: 1px solid var(--line);
  border-radius: 16px; padding: 28px; display: flex; flex-direction: column; gap: 14px;
  box-shadow: 0 24px 60px rgba(0,0,0,.45);
}
.login-card label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--muted); }
.login-card input {
  background: var(--bg-soft); border: 1px solid var(--line); color: var(--fg);
  padding: 10px 12px; border-radius: 9px; font-size: 14px;
}
.login-card input:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
.brand { display: flex; gap: 12px; align-items: center; }
.brand h1 { margin: 0; font-size: 19px; }
.brand p { margin: 2px 0 0; font-size: 12px; }
.logo {
  display: grid; place-items: center; width: 46px; height: 46px; border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), #7b5cff); color: #fff;
  font-weight: 700; font-size: 13px; letter-spacing: .5px;
}
.brand.small .logo { width: 36px; height: 36px; border-radius: 10px; font-size: 11px; }
.fineprint { font-size: 11.5px; color: var(--muted); line-height: 1.6; margin: 4px 0 0; }
.error { color: var(--bad); font-size: 13px; }

/* ── 布局 ─────────────────────────────────────── */
#app { display: grid; grid-template-columns: 232px 1fr; min-height: 100vh; }
.sidebar {
  background: rgba(10,17,30,.72); border-right: 1px solid var(--line);
  padding: 16px 12px; display: flex; flex-direction: column; gap: 16px;
}
#nav { display: flex; flex-direction: column; gap: 4px; flex: 1; }
#nav button {
  text-align: left; background: transparent; border: 0; color: var(--muted);
  padding: 10px 12px; border-radius: 9px; font-size: 14px; cursor: pointer;
}
#nav button:hover { background: var(--panel); color: var(--fg); }
#nav button.active { background: var(--panel-2); color: var(--fg); box-shadow: inset 3px 0 0 var(--accent); }
.sidebar-foot { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.dot { width: 9px; height: 9px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 8px var(--ok); }
.dot.bad { background: var(--bad); box-shadow: 0 0 8px var(--bad); }

.main { padding: 16px 20px 40px; min-width: 0; }
.topbar { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 16px; }
.topbar-right { display: flex; gap: 10px; align-items: center; }
.chip {
  background: var(--panel); border: 1px solid var(--line); color: var(--muted);
  padding: 5px 11px; border-radius: 999px; font-size: 12.5px; cursor: pointer;
}
.chip.active { background: var(--accent); border-color: var(--accent); color: #fff; }
input[type="date"] {
  background: var(--panel); border: 1px solid var(--line); color: var(--fg);
  padding: 5px 8px; border-radius: 8px; font-size: 12.5px;
}

/* ── 卡片与面板 ───────────────────────────────── */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; margin-bottom: 16px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; }
.card .label { font-size: 12px; color: var(--muted); }
.card .value { font-size: 24px; font-weight: 650; margin-top: 6px; letter-spacing: -.3px; }
.card .sub { font-size: 11.5px; color: var(--muted); margin-top: 4px; }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; margin-bottom: 16px; }
.panel h3 { margin: 0 0 12px; font-size: 14.5px; font-weight: 600; }
.panel-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.panel-head h3 { margin: 0; }

/* ── 表格 ─────────────────────────────────────── */
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-weight: 500; font-size: 12px; white-space: nowrap; }
tbody tr:hover { background: rgba(79,140,255,.06); }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
.empty { color: var(--muted); font-size: 13px; padding: 14px 0; }

/* ── 控件 ─────────────────────────────────────── */
.btn {
  border: 1px solid var(--line); background: var(--panel-2); color: var(--fg);
  padding: 9px 14px; border-radius: 9px; font-size: 13.5px; cursor: pointer;
}
.btn:hover { border-color: var(--accent); }
.btn.primary { background: linear-gradient(135deg, var(--accent), #6d63ff); border-color: transparent; color: #fff; font-weight: 600; }
.btn.ghost { background: transparent; }
.btn.tiny { padding: 5px 10px; font-size: 12.5px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
select, .inline-input {
  background: var(--bg-soft); border: 1px solid var(--line); color: var(--fg);
  padding: 6px 9px; border-radius: 8px; font-size: 13px;
}
.inline-input.wide { width: 100%; }
.tag { display: inline-block; padding: 1px 8px; border-radius: 999px; font-size: 11.5px; border: 1px solid var(--line); }
.tag.ok { color: var(--ok); border-color: rgba(56,211,159,.4); background: rgba(56,211,159,.08); }
.tag.warn { color: var(--warn); border-color: rgba(243,177,58,.4); background: rgba(243,177,58,.08); }
.tag.bad { color: var(--bad); border-color: rgba(255,97,97,.4); background: rgba(255,97,97,.08); }
.tag.off { color: var(--muted); }
code { background: var(--bg-soft); padding: 1px 6px; border-radius: 5px; font-size: 12.5px; }

/* ── 图表（纯 CSS 条形） ───────────────────────── */
.chart { display: flex; flex-direction: column; gap: 7px; min-height: 40px; }
.bar-row { display: grid; grid-template-columns: 92px 1fr 88px; align-items: center; gap: 9px; font-size: 12.5px; }
.bar-row .name { color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bar-track { background: var(--bg-soft); border-radius: 5px; height: 16px; overflow: hidden; }
.bar-fill { height: 100%; border-radius: 5px; background: linear-gradient(90deg, var(--accent), #7b5cff); }
.bar-row .val { text-align: right; font-variant-numeric: tabular-nums; }
.heat { display: flex; gap: 3px; align-items: flex-end; height: 96px; }
.heat .h { flex: 1; background: linear-gradient(180deg, var(--accent-2), #1d7f66); border-radius: 3px 3px 0 0; min-height: 2px; position: relative; }
.heat .h.peak { background: linear-gradient(180deg, var(--warn), #a86b12); }
.heat .h span { position: absolute; bottom: -18px; left: 50%; transform: translateX(-50%); font-size: 9.5px; color: var(--muted); }
.legend { display: flex; gap: 14px; font-size: 11.5px; color: var(--muted); margin-top: 22px; }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 5px; }

/* ── 提示 ─────────────────────────────────────── */
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--panel-2); border: 1px solid var(--line); border-radius: 10px;
  padding: 11px 18px; font-size: 13px; box-shadow: 0 12px 30px rgba(0,0,0,.5); z-index: 99;
}
.toast.bad { border-color: var(--bad); color: #ffd7d7; }
.toast.ok { border-color: var(--ok); color: #d5fff0; }