:root {
  --surface-1: #fffcf9;
  --surface-2: #f6efe6;
  --text-primary: #0b0b0b;
  --text-secondary: #52514e;
  --text-muted: #898781;
  --border: rgba(122,22,38,0.14);
  --brand-wine: #7a1626;
  --good: #0ca30c;
  --warning: #fab219;
  --critical: #d03b3b;
  --debito: #d03b3b;
  --credito: #2a78d6;
}

@media (prefers-color-scheme: dark) {
  :root {
    --surface-1: #1a1a19;
    --surface-2: #0d0d0d;
    --text-primary: #ffffff;
    --text-secondary: #c3c2b7;
    --text-muted: #898781;
    --border: rgba(255,255,255,0.10);
    --brand-wine: #9c2438;
    --debito: #e66767;
    --credito: #3987e5;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--surface-2);
  color: var(--text-primary);
  min-height: 100vh;
}
#app { min-height: 100vh; }
.hidden { display: none !important; }
a { color: var(--credito); }

/* ---------- Login ---------- */
.login-screen { min-height: 100vh; display: flex; align-items: center; justify-content: center; }
.login-card {
  background: var(--surface-1); border: 1px solid var(--border); border-radius: 12px;
  padding: 32px; width: 320px; box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}
.login-card h1 { font-size: 18px; margin: 0 0 4px; }
.login-card p { color: var(--text-secondary); font-size: 13px; margin: 0 0 20px; }
.login-card label { display: block; font-size: 12px; color: var(--text-secondary); margin: 12px 0 4px; }
.login-card input {
  width: 100%; padding: 9px 11px; border: 1px solid var(--border); border-radius: 8px;
  background: var(--surface-2); color: var(--text-primary); font-size: 14px;
}
.login-card button, .btn {
  margin-top: 18px; width: 100%; padding: 10px; border: 0; border-radius: 8px;
  background: var(--brand-wine); color: #fff; font-size: 14px; font-weight: 600; cursor: pointer;
}
.err { color: var(--critical); font-size: 12px; margin-top: 10px; }

/* ---------- Layout ---------- */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 20px; background: var(--surface-1); border-bottom: 1px solid var(--border);
}
.topbar h1 { font-size: 15px; margin: 0; }
.topbar .sub { color: var(--text-muted); font-size: 12px; }
.topbar button {
  background: none; border: 1px solid var(--border); border-radius: 7px;
  color: var(--text-secondary); padding: 6px 12px; font-size: 12px; cursor: pointer;
}
.wrap { max-width: 1100px; margin: 0 auto; padding: 20px; }

.controls { display: flex; gap: 10px; align-items: center; margin-bottom: 18px; }
.controls select, .controls input {
  padding: 7px 10px; border: 1px solid var(--border); border-radius: 8px;
  background: var(--surface-1); color: var(--text-primary); font-size: 13px;
}

.cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 16px; }
.card {
  background: var(--surface-1); border: 1px solid var(--border); border-radius: 12px; padding: 18px;
}
.card h2 { font-size: 14px; margin: 0 0 2px; }
.card .cuit { color: var(--text-muted); font-size: 12px; margin-bottom: 14px; }

.row { display: flex; justify-content: space-between; align-items: baseline; padding: 7px 0; border-bottom: 1px dashed var(--border); }
.row:last-child { border-bottom: 0; }
.row .lbl { font-size: 13px; color: var(--text-secondary); }
.row .val { font-size: 14px; font-variant-numeric: tabular-nums; }
.row .val.debito { color: var(--debito); }
.row .val.credito { color: var(--credito); }

.saldo { margin-top: 14px; padding: 12px; border-radius: 10px; text-align: center; background: var(--surface-2); }
.saldo .n { font-size: 22px; font-weight: 700; font-variant-numeric: tabular-nums; }
.saldo.a_pagar .n { color: var(--debito); }
.saldo.a_favor .n { color: var(--good); }
.saldo .k { font-size: 11px; text-transform: uppercase; letter-spacing: .04em; color: var(--text-muted); }

.sync-line { font-size: 11px; color: var(--text-muted); margin-top: 10px; }
.sync-line.bad { color: var(--warning); }

.nota { margin-top: 22px; font-size: 12px; color: var(--text-muted); line-height: 1.5; border-left: 2px solid var(--border); padding-left: 12px; }
.empty { color: var(--text-muted); font-size: 13px; padding: 40px; text-align: center; }