:root {
  --bg: #f4f6f9; --card: #ffffff; --text: #1d2733; --muted: #6b7684; --line: #e3e8ef; --grid: #eef1f5;
  --brand: #1f3a5f; --accent: #2563eb;
  --ok: #16a34a; --warn: #d97706; --bad: #dc2626;
  --s1: #2563eb; --s2: #d97706; --s3: #9333ea;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f141a; --card: #171e26; --text: #e6ebf1; --muted: #93a0ae; --line: #26303b; --grid: #1f2831;
    --brand: #0b1622; --accent: #60a5fa; --s1: #60a5fa; --s2: #fbbf24; --s3: #c084fc;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body { font: 14px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--text); }
h1 { font-size: 22px; margin: 0 0 4px; }
h2 { font-size: 15px; margin: 0 0 2px; }
code { font-size: 12px; }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.r { text-align: right; }

.topbar { display: flex; align-items: center; gap: 16px; padding: 10px 20px; background: var(--brand); color: #fff; }
.brand { font-weight: 700; font-size: 17px; letter-spacing: .3px; }
.badge { font-size: 10px; border: 1px solid #f87171; color: #fca5a5; border-radius: 10px; padding: 1px 7px; margin-left: 4px; vertical-align: middle; }
.host { flex: 1; text-align: center; font-family: ui-monospace, monospace; font-size: 12px; opacity: .8; }
.logout { display: flex; align-items: center; gap: 8px; margin: 0; }
.logout .who { font-size: 12px; opacity: .85; }
.topbar .btn-link { color: #fff; }

.container { max-width: 1240px; margin: 0 auto; padding: 22px 16px 40px; }
.narrow { max-width: 460px; margin-top: 48px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 16px; }

.page-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-end; gap: 12px; margin-bottom: 16px; }
.page-head p { margin: 0; }
.controls { display: flex; align-items: center; gap: 12px; }
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; background: var(--card); }
.seg button { border: 0; background: none; padding: 6px 11px; cursor: pointer; color: var(--muted); font: inherit; font-size: 12px; }
.seg button.on { background: var(--accent); color: #fff; }

.alert { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; padding: 10px 14px; border-radius: 8px; margin-bottom: 14px; }
.alert-ok { background: #f0fdf4; color: #166534; border-color: #bbf7d0; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 12px; margin-bottom: 12px; }
.kpi { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; display: flex; flex-direction: column; }
.kpi .lbl { font-size: 11px; text-transform: uppercase; letter-spacing: .5px; color: var(--muted); }
.kpi .val { font-size: 22px; font-weight: 650; font-variant-numeric: tabular-nums; }
.kpi .sub { font-size: 12px; color: var(--muted); }
.val.ok { color: var(--text); } .val.warn { color: var(--warn); } .val.bad { color: var(--bad); }

.grid2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(420px, 1fr)); gap: 12px; margin-bottom: 12px; }
@media (max-width: 520px) { .grid2 { grid-template-columns: 1fr; } .host { display: none; } }
.chart { position: relative; height: 200px; margin-top: 8px; }

.tbl { width: 100%; border-collapse: collapse; margin-top: 8px; font-variant-numeric: tabular-nums; }
.tbl th, .tbl td { padding: 6px 4px; border-bottom: 1px solid var(--line); text-align: left; }
.tbl th { font-size: 11px; text-transform: uppercase; color: var(--muted); font-weight: 600; }
.tbl th.r, .tbl td.r { text-align: right; }
.bar { height: 7px; background: var(--grid); border-radius: 4px; overflow: hidden; min-width: 80px; }
.bar i { display: block; height: 100%; background: var(--ok); }
.bar i.warn { background: var(--warn); } .bar i.bad { background: var(--bad); }

.services { list-style: none; margin: 8px 0 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 6px 14px; }
.services li { display: flex; align-items: center; gap: 8px; }
.services li span:nth-child(2) { flex: 1; font-family: ui-monospace, monospace; font-size: 12.5px; }
.dot { width: 9px; height: 9px; border-radius: 50%; background: var(--muted); }
.dot.ok { background: var(--ok); } .dot.warn { background: var(--warn); } .dot.bad { background: var(--bad); }

.stats { display: grid; grid-template-columns: auto 1fr; gap: 4px 14px; margin: 12px 0 0; font-size: 13px; }
.stats dt { color: var(--muted); } .stats dd { margin: 0; font-variant-numeric: tabular-nums; }
.foot { margin-top: 18px; text-align: center; }

/* --- Pantallas de login y 2FA (plantillas de django-two-factor-auth) --- */
.auth h1 { margin-bottom: 10px; }
.auth table { width: 100%; border-collapse: collapse; }
.auth th { text-align: left; font-weight: 600; padding: 8px 0 4px; display: block; }
.auth td { display: block; padding: 0 0 6px; }
.auth input[type=text], .auth input[type=password], .auth input[type=number], .auth input:not([type]) {
  width: 100%; padding: 9px 10px; border: 1px solid var(--line); border-radius: 7px; font: inherit; background: var(--bg); color: var(--text);
}
.auth .helptext, .auth .errorlist { font-size: 12px; color: var(--muted); }
.auth .errorlist { color: var(--bad); padding-left: 16px; }
.auth img { display: block; margin: 10px auto; background: #fff; padding: 8px; border-radius: 8px; max-width: 220px; }
.auth form { margin-top: 10px; }
.btn { display: inline-block; border: 1px solid var(--line); background: var(--card); color: var(--text); padding: 8px 14px; border-radius: 7px; cursor: pointer; font: inherit; text-decoration: none; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-secondary { background: var(--grid); }
.btn-link { border: 0; background: none; color: var(--accent); padding: 4px 6px; }
.btn-block { display: block; width: 100%; margin-top: 6px; }
.btn[disabled] { visibility: hidden; }
.float-right { float: right; }
.auth ol, .auth ul { padding-left: 18px; }