:root {
  --bg: #f4f6f9; --card: #fff; --txt: #1d2433; --muted: #6b7385; --borda: #dde2ea;
  --pri: #1f5fbf; --verde: #1e8e4e; --laranja: #c97a00; --vermelho: #c0392b; --azul: #2470d6;
  --verde-bg: #e6f5ec; --laranja-bg: #fff4dc; --vermelho-bg: #fdecea; --azul-bg: #e7f0fc;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12161d; --card: #1b212b; --txt: #e6e9ef; --muted: #8d96a8; --borda: #2c3442;
    --pri: #4c8df0; --verde: #4cc283; --laranja: #f0a43a; --vermelho: #f06a5c; --azul: #5b9cf0;
    --verde-bg: #173324; --laranja-bg: #3a2c12; --vermelho-bg: #3d1c19; --azul-bg: #1a2a44;
  }
}
* { box-sizing: border-box; }
body { margin: 0; font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--txt); }
a { color: var(--pri); text-decoration: none; }
h1 { font-size: 1.4rem; margin: 0 0 16px; }
h2 { font-size: 1.1rem; margin: 28px 0 4px; }
.muted { color: var(--muted); } .pequeno { font-size: .85rem; } .mono { font-family: ui-monospace, Consolas, monospace; font-size: .88em; }
.nowrap { white-space: nowrap; }

.topo { background: #17325c; color: #fff; display: flex; align-items: center; gap: 20px; padding: 0 20px; flex-wrap: wrap; }
.marca { font-weight: 700; padding: 12px 0; } .marca span { font-weight: 400; opacity: .7; font-size: .85em; }
.topo nav { display: flex; gap: 2px; flex: 1; overflow-x: auto; }
.topo nav a { color: #c9d6ee; padding: 14px 12px; border-bottom: 3px solid transparent; white-space: nowrap; }
.topo nav a.ativo, .topo nav a:hover { color: #fff; border-bottom-color: #6fb0ff; }
.conta { font-size: .88rem; } .conta a { color: #c9d6ee; }
main { max-width: 1200px; margin: 0 auto; padding: 24px 20px 60px; }

.card { background: var(--card); border: 1px solid var(--borda); border-radius: 10px; padding: 18px; }
.cabecalho { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 16px; }
.cabecalho h1 { margin: 0; }
.acoes { display: flex; gap: 8px; flex-wrap: wrap; }

.btn { display: inline-block; border: 1px solid var(--borda); background: var(--card); color: var(--txt); padding: 8px 14px; border-radius: 7px; font: inherit; cursor: pointer; font-weight: 500; }
.btn:hover { filter: brightness(.96); }
.btn.primario { background: var(--pri); border-color: var(--pri); color: #fff; }
.btn.retirada { background: var(--vermelho); border-color: var(--vermelho); color: #fff; }
.btn.devolucao { background: var(--azul); border-color: var(--azul); color: #fff; }
.btn.entrada { background: var(--verde); border-color: var(--verde); color: #fff; }

.flash { padding: 10px 14px; border-radius: 8px; margin-bottom: 16px; background: var(--verde-bg); color: var(--verde); font-weight: 500; }
.flash.erro { background: var(--vermelho-bg); color: var(--vermelho); }

.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; margin-bottom: 16px; }
.kpi { background: var(--card); border: 1px solid var(--borda); border-radius: 10px; padding: 12px 16px; color: var(--txt); }
.kpi b { display: block; font-size: 1.6rem; } .kpi span { color: var(--muted); font-size: .85rem; }
.kpi.alerta b { color: var(--laranja); } .kpi.critico b { color: var(--vermelho); }

.filtros { display: flex; gap: 8px; flex-wrap: wrap; margin: 12px 0; align-items: center; }
.filtros input, .filtros select { flex: 1 1 160px; }
.limpar { font-size: .88rem; }
input, select { font: inherit; padding: 8px 10px; border: 1px solid var(--borda); border-radius: 7px; background: var(--card); color: var(--txt); width: 100%; }
.filtros .btn { flex: 0 0 auto; }

.tabela-wrap { overflow-x: auto; background: var(--card); border: 1px solid var(--borda); border-radius: 10px; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 9px 12px; text-align: left; border-bottom: 1px solid var(--borda); vertical-align: middle; }
th { font-size: .78rem; text-transform: uppercase; letter-spacing: .03em; color: var(--muted); font-weight: 600; }
tbody tr:last-child td { border-bottom: 0; }
.num { text-align: right; white-space: nowrap; }
.vazio { text-align: center; color: var(--muted); padding: 24px; }
tr.inativo td { opacity: .5; }
.saldo { font-weight: 700; padding: 2px 8px; border-radius: 6px; }
.saldo.ok { color: var(--verde); } .saldo.baixo { color: var(--laranja); background: var(--laranja-bg); } .saldo.zerado { color: var(--vermelho); background: var(--vermelho-bg); }
.acoes-linha { white-space: nowrap; text-align: right; }
.acoes-linha a { display: inline-block; width: 30px; height: 30px; line-height: 28px; text-align: center; border: 1px solid var(--borda); border-radius: 6px; margin-left: 4px; }

.tag { display: inline-block; padding: 1px 8px; border-radius: 99px; font-size: .8rem; background: var(--bg); color: var(--muted); font-weight: 500; white-space: nowrap; }
.tag.entrada { background: var(--verde-bg); color: var(--verde); }
.tag.retirada { background: var(--vermelho-bg); color: var(--vermelho); }
.tag.devolucao { background: var(--azul-bg); color: var(--azul); }
.tag.admin { background: var(--azul-bg); color: var(--azul); }
.tag.login_falhou { background: var(--vermelho-bg); color: var(--vermelho); }

.abas { display: flex; gap: 6px; margin-bottom: 16px; flex-wrap: wrap; }
.aba { padding: 8px 16px; border-radius: 7px; border: 1px solid var(--borda); color: var(--muted); font-weight: 600; }
.aba.ativo.entrada { background: var(--verde); border-color: var(--verde); color: #fff; }
.aba.ativo.retirada { background: var(--vermelho); border-color: var(--vermelho); color: #fff; }
.aba.ativo.devolucao { background: var(--azul); border-color: var(--azul); color: #fff; }

.form label { display: flex; flex-direction: column; gap: 4px; font-size: .88rem; font-weight: 500; }
.form.grade { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; align-items: end; }
.form .largo { grid-column: 1 / -1; }
.form label.check { flex-direction: row; align-items: center; gap: 8px; }
.form label.check input { width: auto; }
.form.estreito { max-width: 420px; display: flex; flex-direction: column; gap: 14px; }
.botoes { display: flex; gap: 8px; }

.login-body { display: grid; place-items: center; min-height: 100vh; padding: 16px; }
.login { width: 100%; max-width: 360px; display: flex; flex-direction: column; gap: 14px; }
.login h1 { margin: 0; } .login .sub { margin: -10px 0 4px; color: var(--muted); }
.login label { display: flex; flex-direction: column; gap: 4px; font-size: .88rem; font-weight: 500; }
.login .btn { padding: 11px; }

@media (max-width: 640px) {
  .topo { padding: 0 16px; gap: 0 12px; }
  .topo nav { order: 3; flex-basis: 100%; }
  .conta { margin-left: auto; }
  main { padding: 16px 16px 48px; }
  .kpi b { font-size: 1.3rem; }
  th, td { padding: 8px; }
  .cabecalho .acoes { width: 100%; } .cabecalho .acoes .btn { flex: 1; text-align: center; }
}

.sino { background: var(--vermelho); color: #fff; font-weight: 700; padding: 4px 10px; border-radius: 99px; font-size: .85rem; }
.modal { border: 1px solid var(--borda); border-radius: 12px; background: var(--card); color: var(--txt); padding: 20px; width: min(520px, calc(100vw - 32px)); max-height: 80vh; }
.modal::backdrop { background: rgba(0,0,0,.45); }
.modal h2 { margin: 0 0 4px; color: var(--vermelho); }
.modal table { margin: 12px 0 16px; }
.modal .botoes { justify-content: flex-end; }
.duas-colunas { display: grid; grid-template-columns: 1fr 1fr; gap: 0 20px; }
tfoot th { font-size: .95rem; color: var(--txt); text-transform: none; border-top: 2px solid var(--borda); border-bottom: 0; }
@media (max-width: 640px) { .duas-colunas { grid-template-columns: 1fr; } .kpi b { font-size: 1.05rem; } }