:root {
  color-scheme: dark;
  --fundo: #0d1116;
  --cartao: #12161c;
  --borda: #232c38;
  --texto: #dbe2ea;
  --suave: #8b97a6;
  --acento: #3d8bfd;
  --ok: #26a86c;
  --erro: #e04f5f;
}

* { box-sizing: border-box; }

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

body.centro {
  display: grid;
  place-items: center;
  min-height: 100vh;
}

header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  border-bottom: 1px solid var(--borda);
  background: var(--cartao);
}

main {
  display: grid;
  gap: 16px;
  padding: 16px 20px 32px;
  max-width: 1200px;
  margin: 0 auto;
}

h1 { font-size: 20px; margin: 0 0 4px; }
h2 { font-size: 16px; margin: 0 0 4px; }

.sub, .opcional { color: var(--suave); font-size: 13px; margin: 0 0 12px; }
.opcional { font-size: 12px; }

.cartao {
  background: var(--cartao);
  border: 1px solid var(--borda);
  border-radius: 10px;
  padding: 18px;
}

.estreito { width: min(360px, 92vw); }

label {
  display: block;
  margin-bottom: 12px;
  font-size: 13px;
  color: var(--suave);
}

input, select {
  width: 100%;
  margin-top: 5px;
  padding: 9px 10px;
  border-radius: 7px;
  border: 1px solid var(--borda);
  background: #0b0f14;
  color: var(--texto);
  font-size: 14px;
}

input:focus, select:focus { outline: 2px solid var(--acento); outline-offset: -1px; }

button {
  padding: 9px 14px;
  border: 0;
  border-radius: 7px;
  background: var(--acento);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}

button:disabled { opacity: .6; cursor: progress; }
button.secundario { background: #2a3240; }
button.link { background: none; color: var(--suave); font-weight: 400; padding: 4px 8px; }

.grade {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0 14px;
  align-items: end;
}

.grade button { margin-bottom: 12px; }

.etiqueta {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--ok);
  border: 1px solid var(--ok);
  border-radius: 999px;
  padding: 2px 8px;
}

.status { color: var(--suave); font-size: 13px; margin-left: auto; }
.contador { color: var(--suave); font-size: 13px; margin-left: 10px; }

.cabecalho-grafico {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.rotulo-inline {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin: 0 10px 0 0;
  font-size: 13px;
  color: var(--suave);
}

.rotulo-inline select {
  width: auto;
  margin-top: 0;
  padding: 6px 8px;
}

#grafico { height: 460px; width: 100%; }

.registro {
  margin: 12px 0 0;
  max-height: 150px;
  overflow: auto;
  font: 12px/1.6 ui-monospace, SFMono-Regular, Menlo, monospace;
  color: var(--suave);
  background: #0b0f14;
  border: 1px solid var(--borda);
  border-radius: 7px;
  padding: 10px;
  white-space: pre-wrap;
}

.aviso {
  margin: 12px 0 0;
  padding: 10px 12px;
  border-radius: 7px;
  font-size: 13px;
  border: 1px solid var(--borda);
}

.aviso.erro { border-color: var(--erro); color: #ffc9cf; background: #2a1418; }
.aviso.ok { border-color: var(--ok); color: #baf0d2; background: #10231a; }
.erro { color: #ffc9cf; font-size: 13px; }

details { margin-top: 8px; }
summary { cursor: pointer; color: var(--suave); font-size: 13px; margin-bottom: 10px; }
code { font-size: 12px; color: var(--texto); }