:root {
  --bg: #0f1115;
  --bg-2: #161a22;
  --bg-3: #1d222d;
  --fg: #e6e9ef;
  --fg-2: #a4adbb;
  --fg-3: #6e7787;
  --accent: #5aa7ff;
  --warn-bg: #3a2a16;
  --warn-fg: #f5c97b;
  --warn-border: #8a6320;
  --danger-bg: #3a1818;
  --danger-fg: #f59494;
  --danger-border: #8a2020;
  --ok: #6dd09a;
  --mono: ui-monospace, "JetBrains Mono", "SF Mono", Consolas, "Liberation Mono", monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--sans);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.4;
  font-size: 14px;
}

header, main, footer {
  max-width: 960px;
  margin: 0 auto;
  padding: 16px 24px;
}

header {
  border-bottom: 1px solid var(--bg-3);
  padding-bottom: 12px;
}

h1 {
  font-size: 20px;
  margin: 0 0 4px 0;
  font-weight: 600;
  letter-spacing: -0.01em;
}

h2 {
  font-size: 16px;
  margin: 18px 0 8px;
  font-weight: 600;
  color: var(--fg-2);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.sub { color: var(--fg-2); margin: 0; }

.meta {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--fg-3);
  margin: 8px 0 0;
}

main { padding-top: 12px; padding-bottom: 32px; }

section + section { margin-top: 18px; }

.row {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 10px;
}

label, .lbl {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--fg-2);
}

input[type="text"],
input[type="number"],
select {
  background: var(--bg-2);
  border: 1px solid var(--bg-3);
  color: var(--fg);
  padding: 8px 10px;
  font-family: var(--mono);
  font-size: 14px;
  border-radius: 4px;
  width: 100%;
}

input:focus, select:focus {
  outline: none;
  border-color: var(--accent);
}

input:disabled, select:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.input-com-acao {
  display: flex;
  gap: 6px;
}

.input-com-acao input { flex: 1; }

button {
  background: var(--bg-3);
  border: 1px solid var(--bg-3);
  color: var(--fg);
  padding: 8px 12px;
  border-radius: 4px;
  cursor: pointer;
  font-family: var(--sans);
  font-size: 13px;
}

button:hover { background: var(--bg-2); border-color: var(--accent); }
button:disabled { opacity: 0.5; cursor: not-allowed; }

.hint {
  font-size: 12px;
  color: var(--fg-3);
  margin: 0;
  font-style: italic;
}

.row-ncm input { font-size: 15px; padding: 10px 12px; }
.row-ncm #ncm-descricao { font-style: normal; color: var(--fg-2); }
.row-ncm .ncm-categoria { font-family: var(--sans); font-size: 13px; }

.tabs {
  display: inline-flex;
  background: var(--bg-2);
  border: 1px solid var(--bg-3);
  border-radius: 4px;
  overflow: hidden;
}

.tabs button {
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--fg-2);
  font-weight: 600;
  font-family: var(--mono);
  padding: 8px 14px;
}

.tabs button.ativo {
  background: var(--accent);
  color: var(--bg);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 10px 16px;
}

.row-frete input {
  border-color: var(--accent);
  background: linear-gradient(180deg, var(--bg-2) 0%, rgba(90, 167, 255, 0.06) 100%);
}

.extras {
  margin-top: 8px;
  background: var(--bg-2);
  border-radius: 4px;
  padding: 10px 14px;
  border: 1px solid var(--bg-3);
}

.extras summary {
  cursor: pointer;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--fg-2);
  font-weight: 600;
}

.extras[open] summary { margin-bottom: 10px; }

#alertas .alerta {
  background: var(--warn-bg);
  border: 1px solid var(--warn-border);
  color: var(--warn-fg);
  padding: 10px 14px;
  border-radius: 4px;
  margin-bottom: 8px;
  font-size: 13px;
}

#alertas .alerta strong { color: #ffd87a; }

.alerta-travante {
  background: var(--danger-bg);
  border: 2px solid var(--danger-border);
  color: var(--danger-fg);
  padding: 16px 20px;
  border-radius: 4px;
  font-size: 15px;
}

table.breakdown {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--mono);
  font-size: 14px;
}

table.breakdown th {
  text-align: left;
  font-weight: 500;
  color: var(--fg-2);
  padding: 6px 12px 6px 0;
  font-size: 13px;
}

table.breakdown td {
  text-align: right;
  padding: 6px 0;
  white-space: nowrap;
}

table.breakdown td.aliq {
  text-align: right;
  font-size: 12px;
  color: var(--fg-3);
  padding-left: 14px;
  width: 8em;
}

table.breakdown td.aliq.nota { font-style: italic; }

table.breakdown tr.separador td {
  border-bottom: 1px dashed var(--bg-3);
  height: 8px;
  padding: 0;
}

table.breakdown tr.total th,
table.breakdown tr.total td {
  font-weight: 700;
  font-size: 16px;
  color: var(--fg);
  padding-top: 10px;
}

table.breakdown tr.total:first-of-type th,
table.breakdown tr.total:first-of-type td {
  font-size: 18px;
  color: var(--accent);
}

footer {
  border-top: 1px solid var(--bg-3);
  margin-top: 24px;
  padding-top: 16px;
}

.disclaimer {
  font-size: 12px;
  color: var(--fg-3);
  line-height: 1.55;
}
.disclaimer strong { color: var(--fg-2); }