:root {
  color-scheme: light;
  --bg: #f4f4f2;
  --surface: #fcfcfb;
  --surface-2: #efeeea;
  --border: #dddcd6;
  --text: #0b0b0b;
  --text-2: #52514e;
  --muted: #7a7974;
  --accent: #2a78d6;
  --accent-ink: #ffffff;
  --series-1: #2a78d6;
  --grid: #e6e5e0;
  --good: #008300;
  --warn: #b86e00;
  --bad: #c62f2e;
  --prod: #6250d6;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #111110;
    --surface: #1a1a19;
    --surface-2: #242422;
    --border: #33332f;
    --text: #f0efec;
    --text-2: #c3c2b7;
    --muted: #8f8e86;
    --accent: #3987e5;
    --series-1: #3987e5;
    --grid: #2b2b28;
    --good: #2fa52f;
    --warn: #d99a2b;
    --bad: #e66767;
    --prod: #9085e9;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #111110;
  --surface: #1a1a19;
  --surface-2: #242422;
  --border: #33332f;
  --text: #f0efec;
  --text-2: #c3c2b7;
  --muted: #8f8e86;
  --accent: #3987e5;
  --series-1: #3987e5;
  --grid: #2b2b28;
  --good: #2fa52f;
  --warn: #d99a2b;
  --bad: #e66767;
  --prod: #9085e9;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); }
code, .mono { font-family: var(--mono); font-size: 0.92em; }

header.topo {
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  padding: 10px 20px; background: var(--surface); border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 5;
}
header.topo .marca { font-weight: 650; }
header.topo nav { display: flex; gap: 4px; flex-wrap: wrap; }
header.topo nav a {
  text-decoration: none; color: var(--text-2); padding: 6px 10px; border-radius: 6px;
}
header.topo nav a.ativo, header.topo nav a:hover { background: var(--surface-2); color: var(--text); }
header.topo .direita { margin-left: auto; display: flex; gap: 10px; align-items: center; color: var(--text-2); }

main { max-width: 1280px; margin: 0 auto; padding: 20px; }
h1 { font-size: 22px; margin: 0 0 4px; }
h2 { font-size: 16px; margin: 0 0 12px; }
.sub { color: var(--text-2); margin: 0 0 20px; }

.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 16px;
}
.grade { display: grid; gap: 16px; grid-template-columns: repeat(auto-fill, minmax(min(280px, 100%), 1fr)); }
.grade-2 { display: grid; gap: 16px; grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); }
@media (max-width: 900px) { .grade-2 { grid-template-columns: minmax(0, 1fr); } }
.pilha > * + * { margin-top: 16px; }

button, .botao {
  font: inherit; cursor: pointer; border-radius: 6px; padding: 7px 14px;
  border: 1px solid var(--border); background: var(--surface-2); color: var(--text);
  text-decoration: none; display: inline-block;
}
button:hover, .botao:hover { border-color: var(--muted); }
button.primario { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
button.perigo { color: var(--bad); }
button.pequeno { padding: 3px 9px; font-size: 13px; }
input, select, textarea {
  font: inherit; color: var(--text); background: var(--surface); border: 1px solid var(--border);
  border-radius: 6px; padding: 7px 10px; width: 100%;
}
textarea { font-family: var(--mono); min-height: 120px; }
label { display: block; color: var(--text-2); font-size: 13px; margin: 10px 0 4px; }
.linha { display: flex; gap: 8px; align-items: end; flex-wrap: wrap; }
.linha > * { flex: 1 1 120px; }
.linha > button { flex: 0 0 auto; }

.selo {
  display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 600;
  padding: 2px 9px; border-radius: 999px; border: 1px solid var(--border); color: var(--text-2);
}
.selo::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--muted); }
.selo.on { color: var(--good); border-color: currentColor; }
.selo.on::before { background: var(--good); }
.selo.off::before { background: var(--muted); }
.selo.teste { color: var(--accent); border-color: currentColor; }
.selo.teste::before { background: var(--accent); }
.selo.producao { color: var(--prod); border-color: currentColor; }
.selo.producao::before { background: var(--prod); }
.selo.aviso { color: var(--warn); border-color: currentColor; }
.selo.aviso::before { background: var(--warn); }

/* Cartões de variável */
.var-card { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.var-card .nome { color: var(--text-2); font-size: 13px; display: flex; justify-content: space-between; gap: 8px; }
.var-card .valor { font-size: 30px; font-weight: 650; font-variant-numeric: tabular-nums; line-height: 1.1; word-break: break-word; }
.var-card .quando { color: var(--muted); font-size: 12px; }
.var-card .grafico { position: relative; height: 150px; margin-top: 4px; }
.var-card.recente .valor { animation: pisca 0.8s ease-out; }
@keyframes pisca { from { color: var(--accent); } to { color: var(--text); } }

.linha > .abas { flex: 0 0 auto; }
.abas { display: inline-flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.abas a, .abas button { border: 0; border-radius: 0; padding: 6px 14px; text-decoration: none; color: var(--text-2); background: var(--surface); }
.abas .ativo { background: var(--surface-2); color: var(--text); font-weight: 600; }

.vazio { color: var(--text-2); text-align: center; padding: 32px 16px; border: 1px dashed var(--border); border-radius: 10px; }

.log {
  font-family: var(--mono); font-size: 12px; max-height: 320px; overflow: auto;
  background: var(--surface-2); border-radius: 6px; padding: 8px;
}
.log div { padding: 2px 0; border-bottom: 1px solid var(--border); white-space: pre-wrap; word-break: break-all; }
.log .hora { color: var(--muted); }
.log .negado { color: var(--bad); }
.log .cmd { color: var(--prod); }
.log .conexao { color: var(--good); }

.tabela-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); vertical-align: middle; }
th { color: var(--text-2); font-weight: 600; font-size: 13px; }
td.num { font-variant-numeric: tabular-nums; }

pre.codigo {
  background: var(--surface-2); border-radius: 6px; padding: 10px; overflow-x: auto;
  font-family: var(--mono); font-size: 12.5px; margin: 8px 0 0;
}
.cred { display: grid; grid-template-columns: auto 1fr; gap: 4px 12px; }
.cred dt { color: var(--text-2); }
.cred dd { margin: 0; font-family: var(--mono); word-break: break-all; }

.aluno-card { cursor: pointer; text-decoration: none; color: inherit; display: block; }
.aluno-card:hover { border-color: var(--muted); }
.aluno-card .topo-card { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin-bottom: 8px; }
.aluno-card .mini { display: grid; grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); gap: 8px; }
.aluno-card .mini div { background: var(--surface-2); border-radius: 6px; padding: 6px 8px; min-width: 0; }
.aluno-card .mini small { color: var(--text-2); display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.aluno-card .mini b { font-variant-numeric: tabular-nums; font-size: 16px; display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.resumo { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 20px; }
.resumo .card { flex: 1 1 160px; }
.resumo .n { font-size: 28px; font-weight: 650; font-variant-numeric: tabular-nums; }
.resumo .r { color: var(--text-2); font-size: 13px; }

.toast {
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);
  background: var(--text); color: var(--bg); padding: 8px 16px; border-radius: 8px; z-index: 20;
}
.erro { color: var(--bad); }
.dica { color: var(--text-2); font-size: 13px; }

.login-box { max-width: 360px; margin: 10vh auto; }