/* ---------- Tokens ---------- */
:root {
  --abyss: #0a1420;      /* fundo da página */
  --panel: #101d2e;      /* fundo dos cartões */
  --wireframe: #22364c;  /* linhas/bordas estilo esquema técnico */
  --vapor: #e2ecf5;      /* texto principal */
  --steel: #6f88a3;      /* texto secundário/label */
  --signal: #5eebc4;     /* acento — "trace" ativo */
  --amber: #ffb454;      /* estado de atenção / ação pendente */
  --ember: #ff6b6b;      /* estado de erro */
  --mono: 'IBM Plex Mono', ui-monospace, Consolas, monospace;
  --sans: 'IBM Plex Sans', system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background-color: var(--abyss);
  background-image:
    radial-gradient(circle at 1px 1px, rgba(94, 235, 196, 0.07) 1px, transparent 0);
  background-size: 28px 28px;
  color: var(--vapor);
  font-family: var(--sans);
  line-height: 1.45;
}

code {
  font-family: var(--mono);
  background: var(--wireframe);
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 0.85em;
}

/* ---------- Cabeçalho / nameplate ---------- */
.topo {
  padding: 44px 24px 24px;
  max-width: 1400px;
  margin: 0 auto;
  border-bottom: 1px solid var(--wireframe);
}

.eyebrow {
  display: block;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--signal);
  margin-bottom: 10px;
}

.nameplate h1 {
  font-family: var(--mono);
  font-weight: 700;
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  letter-spacing: -0.01em;
  margin: 0 0 16px;
}

.status-linha {
  display: flex;
  align-items: center;
  gap: 10px;
}

.status-texto {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--steel);
}

.led {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--steel);
  flex-shrink: 0;
}

.led--carregando { background: var(--amber); }
.led--ok { background: var(--signal); }
.led--erro { background: var(--ember); }

@media (prefers-reduced-motion: no-preference) {
  .led--carregando { animation: pulso 1.1s ease-in-out infinite; }
}

@keyframes pulso {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

/* ---------- Grid de cartões ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(310px, 1fr));
  gap: 20px;
  padding: 10px 24px 20px;
  max-width: 1400px;
  margin: 0 auto;
}

.card {
  background: var(--panel);
  border: 1px solid var(--wireframe);
  border-top: 2px solid var(--signal);
  border-radius: 8px;
  padding: 18px 20px 20px;
}

.card--erro { border-top-color: var(--ember); }
.card--acao { border-top-color: var(--amber); }

.tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--steel);
  border: 1px solid var(--wireframe);
  border-radius: 3px;
  padding: 2px 6px;
  margin-bottom: 10px;
}

.card h2 {
  font-family: var(--mono);
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 14px;
  color: var(--vapor);
}

/* ---------- Linhas de dado (label / valor) ---------- */
.linha {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 14px;
  padding: 7px 0;
  border-bottom: 1px dashed var(--wireframe);
  font-size: 0.85rem;
}

.linha:last-child { border-bottom: none; }

.label { color: var(--steel); flex-shrink: 0; }

.valor {
  font-family: var(--mono);
  text-align: right;
  word-break: break-word;
  color: var(--vapor);
}

p.valor { margin: 4px 0 0; text-align: left; }

/* ---------- Medidor segmentado (estilo VU-meter) ---------- */
.medidor {
  height: 10px;
  border-radius: 2px;
  margin: 10px 0 6px;
  background:
    repeating-linear-gradient(
      90deg,
      var(--wireframe) 0px,
      var(--wireframe) 6px,
      transparent 6px,
      transparent 8px
    );
  position: relative;
  overflow: hidden;
}

.medidor::before {
  content: '';
  position: absolute;
  inset: 0;
  width: var(--pct, 0%);
  background:
    repeating-linear-gradient(
      90deg,
      var(--signal) 0px,
      var(--signal) 6px,
      var(--abyss) 6px,
      var(--abyss) 8px
    );
}

.medidor-legenda {
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--steel);
  margin-bottom: 12px;
}

.subitem { margin-bottom: 14px; }
.subitem:last-child { margin-bottom: 0; }
.subitem strong {
  display: block;
  font-family: var(--mono);
  font-size: 0.82rem;
  margin-bottom: 2px;
}

.erro { color: var(--ember); font-size: 0.85rem; margin: 0; }

/* ---------- Botão ---------- */
button {
  background: var(--amber);
  color: #241300;
  border: none;
  padding: 9px 16px;
  border-radius: 5px;
  font-family: var(--sans);
  font-weight: 500;
  font-size: 0.85rem;
  cursor: pointer;
  margin-top: 6px;
}

button:hover { filter: brightness(1.08); }

button:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

/* ---------- Painel de teste de estresse ---------- */
.stress-painel {
  max-width: 1400px;
  margin: 0 auto;
  padding: 28px 24px 8px;
}

.stress-cabecalho h2 {
  font-family: var(--mono);
  font-size: clamp(1.25rem, 3vw, 1.7rem);
  font-weight: 600;
  margin: 0 0 10px;
}

.stress-desc {
  color: var(--steel);
  font-size: 0.9rem;
  max-width: 680px;
  margin: 0 0 20px;
}

.stress-controles {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: flex-end;
  background: var(--panel);
  border: 1px solid var(--wireframe);
  border-top: 2px solid var(--amber);
  border-radius: 8px;
  padding: 20px;
}

.campo {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.78rem;
  color: var(--steel);
}

.campo input,
.campo select {
  background: var(--abyss);
  border: 1px solid var(--wireframe);
  color: var(--vapor);
  font-family: var(--mono);
  padding: 9px 10px;
  border-radius: 5px;
  font-size: 0.85rem;
  min-width: 210px;
}

.campo input:focus-visible,
.campo select:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 1px;
}

.campo--custom[hidden] { display: none; }

.stress-botoes {
  display: flex;
  gap: 10px;
  margin-left: auto;
}

#btn-iniciar { background: var(--signal); color: #06231b; }

.botao-parar { background: var(--ember) !important; color: #2a0000 !important; }

.stress-msg {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--amber);
  min-height: 1.2em;
  margin: 12px 2px 0;
}

.stress-live {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  align-items: center;
  margin-top: 22px;
  padding-top: 20px;
  border-top: 1px dashed var(--wireframe);
}

.stress-numero-grande { display: flex; flex-direction: column; }

.stress-numero-grande span:first-child {
  font-family: var(--mono);
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  font-weight: 600;
  color: var(--signal);
  text-shadow: 0 0 20px rgba(94, 235, 196, 0.35);
  line-height: 1;
}

.stress-numero-legenda {
  font-size: 0.72rem;
  color: var(--steel);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 8px;
}

.stress-nucleos {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(64px, 1fr));
  gap: 10px;
  flex: 1;
  min-width: 260px;
}

.nucleo { display: flex; flex-direction: column; gap: 4px; }

.nucleo-label {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--steel);
}

/* ---------- Rodapé ---------- */
.rodape {
  max-width: 900px;
  margin: 10px auto 50px;
  padding: 0 24px;
  color: var(--steel);
  font-size: 0.78rem;
}

@media (max-width: 480px) {
  .topo { padding: 32px 18px 20px; }
  .grid { padding: 10px 18px 16px; }
  .stress-painel { padding: 22px 18px 8px; }
  .stress-botoes { margin-left: 0; width: 100%; }
  .stress-botoes button { flex: 1; }
}