:root {
  --azul: #1a56db; --azul-esc: #123c94; --fundo: #f4f6fb; --card: #fff;
  --texto: #1c2333; --suave: #667085; --borda: #e3e8f0; --verde: #0e9f6e; --vermelho: #e02424;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; background: var(--fundo); color: var(--texto); }
main { padding: 16px; max-width: 1200px; margin: 0 auto; }
h1 { font-size: 1.35rem; margin: 8px 0; }
h2 { font-size: 1.05rem; margin: 22px 0 10px; }
.sub { color: var(--suave); font-size: .85rem; margin: 2px 0 12px; }

.topo { background: var(--card); border-bottom: 1px solid var(--borda); position: sticky; top: 0; z-index: 10; }
.topo-inner { max-width: 1200px; margin: 0 auto; padding: 12px 16px; display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.logo { font-weight: 700; color: var(--texto); text-decoration: none; font-size: 1.05rem; }
.topo nav { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; }
.topo nav a { color: var(--suave); text-decoration: none; font-size: .9rem; }
.topo nav a:hover { color: var(--azul); }

.painel-topo { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.btn-principal { background: var(--azul); color: #fff; border: 0; padding: 12px 18px; border-radius: 10px; font-size: .95rem; cursor: pointer; min-height: 44px; }
.btn-principal:hover { background: var(--azul-esc); }
.btn-mini { display: inline-block; background: #e8effc; color: var(--azul); border: 0; padding: 7px 11px; border-radius: 8px; font-size: .8rem; text-decoration: none; cursor: pointer; min-height: 32px; }

.filtros { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 8px; background: var(--card); padding: 12px; border: 1px solid var(--borda); border-radius: 12px; margin: 12px 0; }
.filtros input, .filtros select { padding: 11px; border: 1px solid var(--borda); border-radius: 8px; font-size: .9rem; min-height: 44px; width: 100%; }
.filtros button { background: var(--azul); color: #fff; border: 0; border-radius: 8px; cursor: pointer; min-height: 44px; }

.tabela-wrap { overflow-x: auto; background: var(--card); border: 1px solid var(--borda); border-radius: 12px; }
.tabela { width: 100%; border-collapse: collapse; font-size: .88rem; }
.tabela th, .tabela td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--borda); white-space: nowrap; }
.tabela th { background: #f8fafd; font-size: .78rem; text-transform: uppercase; color: var(--suave); }
.tabela tr:last-child td { border-bottom: 0; }
.preco { font-weight: 700; color: var(--verde); }

.aviso { background: #e6f6ef; color: var(--verde); padding: 11px 14px; border-radius: 10px; margin: 10px 0; font-size: .9rem; }
.erro { background: #fde8e8; color: var(--vermelho); padding: 11px 14px; border-radius: 10px; margin: 10px 0; font-size: .9rem; }

.grafico-wrap { background: var(--card); border: 1px solid var(--borda); border-radius: 12px; padding: 14px; }

/* login */
.login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.login-card { background: var(--card); padding: 28px 24px; border-radius: 16px; border: 1px solid var(--borda); width: 100%; max-width: 380px; }
.login-card h1 { text-align: center; font-size: 1.25rem; }
.login-card label { display: block; margin: 12px 0 4px; font-size: .85rem; color: var(--suave); }
.login-card input { width: 100%; padding: 12px; border: 1px solid var(--borda); border-radius: 8px; font-size: 1rem; min-height: 44px; }
.login-card button { width: 100%; margin-top: 16px; background: var(--azul); color: #fff; border: 0; padding: 13px; border-radius: 10px; font-size: 1rem; cursor: pointer; }

@media (max-width: 640px) {
  .tabela th, .tabela td { padding: 8px; font-size: .8rem; }
  .painel-topo { flex-direction: column; align-items: stretch; }
}