:root {
  --bg: #0f1115;
  --panel: #161922;
  --panel2: #1d2230;
  --fg: #e6e8ee;
  --muted: #8a93a6;
  --accent: #5aa7ff;
  --ok: #4ade80;
  --warn: #fbbf24;
  --err: #f87171;
  --border: #232838;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--fg);
  font: 14px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
small.muted, .muted { color: var(--muted); }

.topbar {
  display: flex; align-items: center; gap: 24px;
  background: var(--panel); border-bottom: 1px solid var(--border);
  padding: 0 20px; height: 48px;
}
.topbar .brand { font-weight: 700; color: var(--fg); }
.topbar nav { display: flex; gap: 16px; flex: 1; }
.topbar nav a { color: var(--fg); }
.topbar .user { display: flex; gap: 12px; align-items: center; color: var(--muted); }

main { max-width: 1280px; margin: 0 auto; padding: 24px; }
h1 { margin: 0 0 16px; font-size: 22px; }
h2 { margin: 24px 0 12px; font-size: 16px; color: var(--muted); border-bottom: 1px solid var(--border); padding-bottom: 6px; }

.kpi { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; margin-bottom: 16px; }
.kpi-card { background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 14px 16px; }
.kpi-card.ok  { border-color: var(--ok); }
.kpi-card.warn{ border-color: var(--warn); }
.kpi-card.err { border-color: var(--err); }
.kpi-num { font-size: 26px; font-weight: 700; }
.kpi-lbl { color: var(--muted); font-size: 12px; }

.t { width: 100%; border-collapse: collapse; background: var(--panel); border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.t th, .t td { padding: 8px 10px; text-align: left; border-bottom: 1px solid var(--border); }
.t th { background: var(--panel2); color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; }
.t tbody tr:hover { background: rgba(255,255,255,.02); }

.dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; margin-right: 6px; vertical-align: middle; }
.dot-ok { background: var(--ok); }
.dot-err { background: var(--err); }
.dot-warn { background: var(--warn); }
.dot-unknown { background: var(--muted); }

.sev-warning { background: rgba(251, 191, 36, .06); }
.sev-critical { background: rgba(248, 113, 113, .08); }

form label { display: block; margin: 8px 0; }
form label.chk { display: flex; align-items: center; gap: 8px; }
form input[type=text], form input[type=email], form input[type=number], form input[type=password], form select, form input:not([type]) {
  display: block; width: 100%; max-width: 460px;
  background: var(--panel2); color: var(--fg); border: 1px solid var(--border);
  border-radius: 6px; padding: 8px 10px;
}
form fieldset { border: 1px solid var(--border); border-radius: 8px; margin: 12px 0; padding: 12px 16px; background: var(--panel); }
form fieldset legend { color: var(--muted); padding: 0 8px; font-size: 12px; text-transform: uppercase; }
button, .btn {
  display: inline-block; background: var(--accent); color: #0a1220; border: 0; padding: 8px 14px;
  border-radius: 6px; font-weight: 600; cursor: pointer; text-decoration: none;
}
button.link { background: transparent; color: var(--accent); padding: 0 4px; font-weight: 400; }
button:hover, .btn:hover { filter: brightness(1.1); }

.flash { padding: 10px 14px; border-radius: 6px; margin: 8px 0; }
.flash-ok { background: rgba(74,222,128,.12); border: 1px solid var(--ok); }
.flash-error { background: rgba(248,113,113,.12); border: 1px solid var(--err); }
.flash-info { background: rgba(90,167,255,.12); border: 1px solid var(--accent); }

.login-box { max-width: 360px; margin: 80px auto; background: var(--panel);
  border: 1px solid var(--border); border-radius: 10px; padding: 24px; }
.login-box h1 { text-align: center; }

.filtros a { margin-right: 12px; color: var(--muted); }
.filtros a.sel { color: var(--accent); font-weight: 600; }

.rango { margin: 4px 0 12px; }
.rango-btn { background: var(--panel2); color: var(--muted); border: 1px solid var(--border);
  padding: 4px 10px; margin-right: 4px; border-radius: 6px; font-weight: 500; cursor: pointer; }
.rango-btn:hover { background: var(--panel); color: var(--fg); }
.rango-btn.sel { background: var(--accent); color: #0a1220; border-color: var(--accent); }