:root {
  color-scheme: light dark;
  --bg: #f4f6f8;
  --surface: #ffffff;
  --borda: #dfe4ea;
  --texto: #1c2733;
  --texto-fraco: #63707e;
  --marca: #0a6b3d;
  --ok: #1e9e5a;
  --warning: #c98a00;
  --critical: #d64545;
  --down: #8b1a1a;
  --unknown: #8b95a1;
  --sombra: 0 1px 3px rgba(16, 24, 40, .08);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12171d;
    --surface: #1a2027;
    --borda: #2b343d;
    --texto: #e6ebf0;
    --texto-fraco: #9aa7b4;
    --marca: #3fbf7f;
    --sombra: 0 1px 3px rgba(0, 0, 0, .4);
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--texto);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

.topo {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--borda);
}

.topo h1 { margin: 0; font-size: 20px; letter-spacing: -.01em; }
.resumo { margin: 4px 0 0; color: var(--texto-fraco); font-size: 13px; }
.topo-acoes { display: flex; align-items: center; gap: 10px; }

button {
  font: inherit;
  padding: 8px 16px;
  border-radius: 8px;
  border: 1px solid var(--marca);
  background: var(--marca);
  color: #fff;
  cursor: pointer;
}
button:hover { filter: brightness(1.08); }
button:disabled { opacity: .55; cursor: progress; }

select {
  font: inherit;
  padding: 6px 10px;
  border-radius: 8px;
  border: 1px solid var(--borda);
  background: var(--surface);
  color: var(--texto);
}

.tag {
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--borda);
  color: var(--texto-fraco);
}

main { padding: 24px; max-width: 1180px; margin: 0 auto; }
section { margin-bottom: 32px; }
h2 { font-size: 15px; text-transform: uppercase; letter-spacing: .06em; color: var(--texto-fraco); margin: 0 0 12px; }
.secao-cabecalho { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.secao-cabecalho h2 { margin: 0; }

.aviso {
  padding: 12px 16px;
  border-radius: 10px;
  border: 1px solid var(--critical);
  background: color-mix(in srgb, var(--critical) 10%, transparent);
  color: var(--texto);
  margin-bottom: 24px;
  white-space: pre-wrap;
  font-size: 13px;
}

.cards { display: grid; gap: 16px; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); }

.card {
  background: var(--surface);
  border: 1px solid var(--borda);
  border-left: 4px solid var(--unknown);
  border-radius: 12px;
  padding: 16px;
  box-shadow: var(--sombra);
}
.card.ok { border-left-color: var(--ok); }
.card.warning { border-left-color: var(--warning); }
.card.critical { border-left-color: var(--critical); }
.card.down { border-left-color: var(--down); }
.card.stale { border-left-color: var(--warning); }

.card-topo { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; }
.card h3 { margin: 0; font-size: 17px; }

.badge { font-size: 12px; font-weight: 600; padding: 3px 10px; border-radius: 999px; color: #fff; background: var(--unknown); white-space: nowrap; }
.badge.ok { background: var(--ok); }
.badge.warning { background: var(--warning); }
.badge.critical { background: var(--critical); }
.badge.down { background: var(--down); }
.badge.stale { background: var(--warning); }

.metricas { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 14px 0 0; }
.metrica { background: var(--bg); border-radius: 8px; padding: 8px 10px; }
.metrica dt { font-size: 11px; color: var(--texto-fraco); text-transform: uppercase; letter-spacing: .04em; margin: 0; }
.metrica dd { margin: 2px 0 0; font-size: 17px; font-variant-numeric: tabular-nums; }

.portas { margin-top: 14px; padding-top: 12px; border-top: 1px dashed var(--borda); }
.portas-titulo { font-size: 11px; text-transform: uppercase; letter-spacing: .04em; color: var(--texto-fraco); margin-bottom: 7px; }
.porta { display: flex; align-items: center; gap: 8px; font-size: 12.5px; padding: 2px 0; }
.porta .ponto { width: 8px; height: 8px; border-radius: 50%; flex: 0 0 auto; background: var(--unknown); }
.porta.up .ponto { background: var(--ok); }
.porta.down .ponto { background: var(--critical); }
.porta-nome { font-weight: 600; min-width: 74px; }
.porta-ip { font-weight: 700; font-variant-numeric: tabular-nums; }
.porta-det { color: var(--texto-fraco); }
.porta.down .porta-det { color: var(--critical); }

.suporte { margin-top: 14px; padding-top: 12px; border-top: 1px dashed var(--borda); font-size: 12px; color: var(--texto-fraco); }
.suporte div + div { margin-top: 3px; }

.grafico { background: var(--surface); border: 1px solid var(--borda); border-radius: 12px; padding: 16px; box-shadow: var(--sombra); overflow-x: auto; }
.legenda { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 10px; font-size: 12px; color: var(--texto-fraco); }
.legenda span { display: inline-flex; align-items: center; gap: 6px; }
.chave { width: 11px; height: 11px; border-radius: 3px; display: inline-block; }

.eventos { background: var(--surface); border: 1px solid var(--borda); border-radius: 12px; box-shadow: var(--sombra); overflow: hidden; }
.evento { display: flex; gap: 12px; padding: 11px 16px; border-bottom: 1px solid var(--borda); font-size: 13px; }
.evento:last-child { border-bottom: 0; }
.evento time { color: var(--texto-fraco); white-space: nowrap; font-variant-numeric: tabular-nums; }
.evento .quem { font-weight: 600; min-width: 90px; }
.evento .oque { color: var(--texto-fraco); }

.vazio { padding: 22px 16px; color: var(--texto-fraco); text-align: center; font-size: 13px; }

@media (max-width: 620px) {
  main { padding: 16px; }
  .topo { padding: 14px 16px; }
  .metricas { grid-template-columns: 1fr 1fr; }
}