:root {
  --fundo: #f4f5f7;
  --papel: #fff;
  --tinta: #1b1d21;
  --fraca: #6b7280;
  --linha: #e2e4e9;
  --acento: #1f6feb;
  --acento-fraco: #e8f0fe;
  --ok: #157347;
  --alerta: #b45309;
  --erro: #b91c1c;
  --raio: 8px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fundo: #14161a; --papel: #1c1f25; --tinta: #e6e8ec; --fraca: #9aa1ad;
    --linha: #2c3038; --acento: #4d8ef7; --acento-fraco: #1d2a40;
    --ok: #37b26d; --alerta: #d99a3a; --erro: #e5645a;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font: 14px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--fundo);
  color: var(--tinta);
}

.oculto { display: none !important; }
.fraca { color: var(--fraca); }
.erro { color: var(--erro); }
.n { text-align: right; font-variant-numeric: tabular-nums; }

/* ------------------------------------------------------------------ login */
.login { min-height: 100vh; display: grid; place-items: center; padding: 20px; }
.login form {
  background: var(--papel); padding: 30px; border-radius: 12px; width: 340px;
  border: 1px solid var(--linha); display: flex; flex-direction: column; gap: 12px;
}
.login h1 { margin: 0; font-size: 22px; }
.login p { margin: 0; font-size: 13px; }

/* -------------------------------------------------------------------- nav */
nav {
  display: flex; align-items: center; gap: 4px; padding: 0 16px;
  background: var(--papel); border-bottom: 1px solid var(--linha);
  position: sticky; top: 0; z-index: 10; flex-wrap: wrap;
}
nav strong { margin-right: 16px; font-size: 15px; letter-spacing: -.01em; }
.empurra { flex: 1; }

.aba {
  background: none; border: none; border-bottom: 2px solid transparent;
  padding: 14px 12px; font: inherit; color: var(--fraca); cursor: pointer;
}
.aba:hover { color: var(--tinta); }
.aba.ativa { color: var(--acento); border-bottom-color: var(--acento); font-weight: 600; }

.aba-conteudo { padding: 20px; max-width: 1500px; margin: 0 auto; }

/* ---------------------------------------------------------------- layout */
.colunas { display: grid; grid-template-columns: 350px 1fr; gap: 18px; align-items: start; }
@media (max-width: 980px) { .colunas { grid-template-columns: 1fr; } }

.painel {
  background: var(--papel); border: 1px solid var(--linha);
  border-radius: var(--raio); padding: 18px;
}
.painel h2 { font-size: 12px; text-transform: uppercase; letter-spacing: .06em;
             color: var(--fraca); margin: 18px 0 10px; }
.painel h2:first-child { margin-top: 0; }

.barra { display: flex; gap: 10px; align-items: center; margin-bottom: 14px; flex-wrap: wrap; }
.barra h2 { margin: 0; flex: 1; font-size: 17px; }

/* --------------------------------------------------------------- formulário */
label { display: block; font-size: 12px; color: var(--fraca); margin-bottom: 10px; }
input, select, textarea {
  width: 100%; margin-top: 4px; padding: 8px 10px; font: inherit;
  color: var(--tinta); background: var(--fundo);
  border: 1px solid var(--linha); border-radius: 6px;
}
input:focus, select:focus, textarea:focus {
  outline: 2px solid var(--acento); outline-offset: -1px; border-color: var(--acento);
}
textarea { resize: vertical; font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
           font-size: 12.5px; }
.dupla { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.com-sufixo { display: flex; align-items: center; gap: 6px; }
.com-sufixo span { color: var(--fraca); }
.ajuda { font-size: 12px; color: var(--fraca); margin: 0 0 8px; }
code { background: var(--fundo); padding: 1px 5px; border-radius: 4px; font-size: 12px; }

button {
  font: inherit; padding: 8px 14px; border-radius: 6px; cursor: pointer;
  border: 1px solid var(--linha); background: var(--papel); color: var(--tinta);
}
button:hover { border-color: var(--acento); color: var(--acento); }
button.primario {
  background: var(--acento); border-color: var(--acento); color: #fff;
  font-weight: 600; width: 100%; padding: 10px;
}
button.primario:hover { filter: brightness(1.1); color: #fff; }
button.link { border: none; background: none; color: var(--fraca); padding: 6px 10px; }
button.mini { padding: 4px 9px; font-size: 12px; }
button:disabled { opacity: .5; cursor: not-allowed; }

/* ---------------------------------------------------------------- tabelas */
table { width: 100%; border-collapse: collapse; }
th {
  text-align: left; font-size: 10.5px; text-transform: uppercase; letter-spacing: .05em;
  color: var(--fraca); padding: 8px; border-bottom: 1px solid var(--linha); font-weight: 600;
  white-space: nowrap;
}
td { padding: 8px; border-bottom: 1px solid var(--linha); font-variant-numeric: tabular-nums; }
tbody tr:last-child td { border-bottom: none; }

.rolavel { overflow-x: auto; }

tr.clicavel { cursor: pointer; }
tr.clicavel:hover td { background: var(--acento-fraco); }
tr.escolhida td { background: var(--acento-fraco); font-weight: 600; }

/* ---------------------------------------------------------------- cartões */
.cartoes { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
           gap: 12px; margin-bottom: 18px; }
.cartao {
  background: var(--papel); border: 1px solid var(--linha);
  border-radius: var(--raio); padding: 14px;
}
.cartao span { display: block; font-size: 11px; text-transform: uppercase;
               letter-spacing: .05em; color: var(--fraca); }
.cartao strong { display: block; font-size: 21px; margin-top: 4px; letter-spacing: -.02em; }
.cartao.destaque strong { color: var(--erro); }

/* -------------------------------------------------------------- resultado */
.vazio { padding: 50px 20px; text-align: center; }
.vazio p { margin: 0 0 8px; }

.destaque-preco {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 14px; padding: 16px; background: var(--acento-fraco);
  border-radius: var(--raio); margin-bottom: 18px;
}
.destaque-preco div span { display: block; font-size: 11px; color: var(--fraca);
                           text-transform: uppercase; letter-spacing: .04em; }
.destaque-preco div strong { font-size: 19px; letter-spacing: -.02em; }

.chapa {
  border: 1px solid var(--linha); border-radius: 6px; padding: 12px;
  margin-bottom: 10px; background: var(--fundo);
}
.chapa header { display: flex; justify-content: space-between; align-items: baseline;
                margin-bottom: 8px; font-weight: 600; }
.chapa ul { margin: 0; padding-left: 18px; font-size: 13px; color: var(--fraca); }

.selo { display: inline-block; padding: 2px 8px; border-radius: 20px; font-size: 11px;
        font-weight: 600; background: var(--fundo); border: 1px solid var(--linha); }
.selo.ok { color: var(--ok); border-color: currentColor; }
.selo.alerta { color: var(--alerta); border-color: currentColor; }
.selo.erro { color: var(--erro); border-color: currentColor; }
.selo.info { color: var(--acento); border-color: currentColor; }

.acoes-linha { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 16px; }

details { margin-top: 14px; }
summary { cursor: pointer; font-size: 12px; text-transform: uppercase;
          letter-spacing: .06em; color: var(--fraca); padding: 6px 0; }
summary:hover { color: var(--acento); }

/* ------------------------------------------------------------------ modal */
.modal { position: fixed; inset: 0; background: rgba(0,0,0,.45);
         display: grid; place-items: center; padding: 20px; z-index: 50; }
.modal-caixa {
  background: var(--papel); border-radius: 12px; padding: 22px;
  max-width: 620px; width: 100%; max-height: 85vh; overflow: auto;
  border: 1px solid var(--linha);
}
.modal-caixa h3 { margin: 0 0 14px; font-size: 16px; }

/* ------------------------------------------------------------------ aviso */
.aviso {
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);
  background: var(--tinta); color: var(--papel); padding: 11px 20px;
  border-radius: 8px; z-index: 100; font-size: 13px; max-width: 90vw;
}
.aviso.ruim { background: var(--erro); color: #fff; }