:root {
  --azul: #1a5fa8;
  --azul-esc: #0d3d6b;
  --vermelho: #b00000;
  --verde: #1a7a1a;
  --cinza: #f5f6f8;
  --borda: #d9dee5;
  --texto: #1d2430;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--cinza); color: var(--texto);
  padding-bottom: 40px;
}

/* Topbar */
.topbar {
  background: var(--azul); color: #fff;
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 16px; position: sticky; top: 0; z-index: 10;
  padding-top: max(10px, env(safe-area-inset-top));
}
.brand { font-weight: 800; font-size: 18px; }
.tabs { display: flex; gap: 4px; }
.tab {
  background: transparent; color: #cfe0f2; border: none;
  padding: 8px 12px; border-radius: 8px; font-size: 14px; cursor: pointer;
  font-weight: 600;
}
.tab.active { background: rgba(255,255,255,.18); color: #fff; }

/* Views */
main { max-width: 880px; margin: 0 auto; padding: 16px; }
.view { display: none; }
.view.active { display: block; }
.view-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.view-head h2 { font-size: 18px; }

.search {
  width: 100%; padding: 10px 12px; border: 1px solid var(--borda);
  border-radius: 10px; margin-bottom: 12px; font-size: 14px;
}

/* Cards */
.cards { display: flex; flex-direction: column; gap: 10px; }
.card {
  background: #fff; border: 1px solid var(--borda); border-radius: 12px;
  padding: 12px 14px; display: flex; justify-content: space-between; align-items: center;
  gap: 10px;
}
.card .info { min-width: 0; }
.card .info .titulo { font-weight: 700; font-size: 15px; }
.card .info .sub { color: #667; font-size: 13px; margin-top: 2px; }
.card .info .sub.custo { color: var(--verde); font-weight: 600; }
.card .acoes { display: flex; gap: 6px; flex-shrink: 0; flex-wrap: wrap; justify-content: flex-end; }
.valor-tot { color: var(--vermelho); font-weight: 800; }
.empty { text-align: center; color: #889; padding: 40px 10px; }
.card.clicavel { cursor: pointer; }
.card.clicavel .info:hover .titulo { text-decoration: underline; }

/* Detalhe do cliente */
#btn-voltar { margin-bottom: 12px; }
.detalhe-head {
  display: flex; justify-content: space-between; align-items: flex-start; gap: 12px;
  background: #fff; border: 1px solid var(--borda); border-radius: 12px;
  padding: 14px; margin-bottom: 16px;
}
.detalhe-head h2 { font-size: 18px; }
.detalhe-head .sub { color: #667; font-size: 13px; margin-top: 2px; }

/* Buttons */
.btn {
  border: none; border-radius: 9px; padding: 8px 14px; font-size: 14px;
  cursor: pointer; font-weight: 600; background: #e9edf2; color: var(--texto);
}
.btn.small { padding: 6px 10px; font-size: 13px; }
.btn.primary { background: var(--azul); color: #fff; }
.btn.ghost { background: transparent; border: 1px solid var(--borda); }
.btn.danger { background: #fde7e7; color: var(--vermelho); }
.btn:active { transform: translateY(1px); }

/* Forms */
.form { display: flex; flex-direction: column; gap: 12px; }
.form.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: #556; font-weight: 600; }
.form .full { grid-column: 1 / -1; }
.form input, .form select {
  padding: 9px 10px; border: 1px solid var(--borda); border-radius: 9px;
  font-size: 14px; background: #fff; color: var(--texto);
}
.form input:focus, .form select:focus { outline: 2px solid #bcd4ef; border-color: var(--azul); }

/* Modal */
.modal { position: fixed; inset: 0; background: rgba(0,0,0,.45); display: flex;
  align-items: flex-start; justify-content: center; padding: 20px; z-index: 50; overflow: auto; }
.modal[hidden] { display: none; }
.modal-box { background: #fff; border-radius: 16px; width: 100%; max-width: 640px;
  padding: 18px; margin: auto; }
.modal-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; }
.modal-head h3 { font-size: 17px; }
.modal-close { background: none; border: none; font-size: 18px; cursor: pointer; color: #889; }
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 6px; }

/* Preview de cálculo */
.preview {
  background: var(--cinza); border: 1px solid var(--borda); border-radius: 12px;
  padding: 12px; display: grid; grid-template-columns: 1fr 1fr; gap: 8px 16px;
}
.preview div { display: flex; justify-content: space-between; font-size: 14px; }
.preview span { color: #667; }
.preview strong { font-weight: 800; }
.preview .pv-total { grid-column: 1 / -1; border-top: 1px dashed var(--borda); padding-top: 8px; font-size: 16px; }
.preview .pv-total strong { color: var(--vermelho); }
.preview .pv-custo { grid-column: 1 / -1; color: #667; font-size: 13px; }
.preview .pv-custo:first-of-type { border-top: 1px dotted var(--borda); padding-top: 6px; }
.preview .pv-custo strong { color: var(--verde); }

/* QR preview */
.qr-preview-wrap { display: flex; align-items: center; gap: 12px; }
.qr-preview-wrap img { width: 110px; height: 110px; border: 1px solid var(--borda); border-radius: 8px; object-fit: contain; background: #fff; }

/* Painel / resumo */
.resumo { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.resumo .box {
  background: #fff; border: 1px solid var(--borda); border-radius: 12px; padding: 14px;
}
.resumo .box .rotulo { color: #667; font-size: 12px; font-weight: 600; }
.resumo .box .num { font-size: 22px; font-weight: 800; margin-top: 4px; }
.resumo .box.destaque { grid-column: 1 / -1; background: var(--azul); color: #fff; border-color: var(--azul); }
.resumo .box.destaque .rotulo { color: #cfe0f2; }
.resumo .box .num.verde { color: var(--verde); }
.resumo .box .num.vermelho { color: var(--vermelho); }
.resumo .box .num.amarelo { color: #b07b00; }

/* Selo de status na lista de faturas */
.badge { display: inline-block; border-radius: 6px; padding: 2px 8px; font-size: 11px; font-weight: 800; }
.badge.pago { background: #e3f5e3; color: var(--verde); }
.badge.pendente { background: #fff3d6; color: #b07b00; }
.badge.vencida { background: #fde7e7; color: var(--vermelho); }

/* Toast */
.toast {
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);
  background: #222; color: #fff; padding: 10px 18px; border-radius: 10px;
  font-size: 14px; z-index: 100; max-width: 90vw;
}
.toast.erro { background: var(--vermelho); }

@media (max-width: 560px) {
  .form.grid { grid-template-columns: 1fr; }
  .preview { grid-template-columns: 1fr; }
  .brand { font-size: 16px; }
  .tab { padding: 8px 9px; font-size: 13px; }
}