:root {
  --black: #141414;
  --gold: #d4af37;
  --gold-deep: #9c7a1e;
  --bg: #f6f4ee;
  --card: #ffffff;
  --text: #1a1a1a;
  --muted: #6b6558;
  --danger: #dc2626;
  --wa: #25d366;
  --ok: #16a34a;
  --radius: 14px;
  --shadow: 0 1px 3px rgba(0, 0, 0, .12), 0 1px 2px rgba(0, 0, 0, .06);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  padding-bottom: 90px;
  -webkit-tap-highlight-color: transparent;
}

.app-header {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 16px 18px calc(16px + env(safe-area-inset-top));
  background: var(--black);
  color: #fff;
  border-bottom: 2px solid var(--gold);
}
.header-brand { display: flex; align-items: center; gap: 10px; }
.brand-logo { height: 40px; width: 40px; border-radius: 50%; object-fit: contain; flex: 0 0 auto; }
.app-header h1 { margin: 0; font-size: 1.35rem; letter-spacing: .3px; }
.subtitle { margin: 2px 0 0; font-size: .8rem; opacity: .85; text-transform: capitalize; }
.icon-btn {
  background: rgba(255, 255, 255, .18);
  border: 0; color: #fff; font-size: 1.3rem;
  width: 40px; height: 40px; border-radius: 50%; cursor: pointer;
}

.filtros {
  display: flex; gap: 8px;
  padding: 12px 16px;
  overflow-x: auto;
}
.filtro {
  border: 1px solid #cbd5e1; background: #fff; color: var(--muted);
  padding: 7px 16px; border-radius: 999px; font-size: .85rem; cursor: pointer;
  white-space: nowrap;
}
.filtro.activo { background: var(--gold); color: var(--black); border-color: var(--gold); }

.lista { padding: 4px 16px; display: flex; flex-direction: column; gap: 12px; }
.vacio { text-align: center; color: var(--muted); padding: 40px 0; }

.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 14px 16px;
}
.card.cobrado { opacity: .55; }
.card-top { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; }
.card-nombre { font-weight: 600; font-size: 1.02rem; }
.card-monto { font-weight: 700; color: var(--gold-deep); white-space: nowrap; }
.card-producto { color: var(--muted); font-size: .9rem; margin: 2px 0 10px; }

.badge {
  display: inline-block; font-size: .72rem; font-weight: 600;
  padding: 3px 9px; border-radius: 999px; margin-bottom: 10px;
}
.badge.vencida { background: #fee2e2; color: var(--danger); }
.badge.hoy { background: #fef3c7; color: #b45309; }
.badge.futura { background: #dcfce7; color: #15803d; }
.badge.ok { background: #dcfce7; color: #15803d; }

.card-acciones { display: flex; gap: 10px; }
.btn-wa, .btn-cobrar {
  flex: 1; border: 0; border-radius: 10px; padding: 11px;
  font-size: .92rem; font-weight: 600; cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
}
.btn-wa { background: var(--wa); color: #fff; text-decoration: none; }
.btn-cobrar { background: #e2e8f0; color: var(--text); }
.btn-cobrar.deshacer { background: #fff7ed; color: #b45309; }

.fab {
  position: fixed; right: 20px; bottom: calc(20px + env(safe-area-inset-bottom));
  width: 58px; height: 58px; border-radius: 50%;
  background: var(--gold); color: var(--black); border: 0;
  font-size: 2rem; line-height: 1; box-shadow: 0 4px 12px rgba(212, 175, 55, .5);
  cursor: pointer; z-index: 6;
}

.modal {
  position: fixed; inset: 0; z-index: 10;
  background: rgba(15, 23, 42, .5);
  display: flex; align-items: flex-end; justify-content: center;
}
.modal.oculto, .oculto { display: none !important; }
.modal-card {
  background: #fff; width: 100%; max-width: 480px;
  border-radius: 18px 18px 0 0; padding: 20px 18px calc(20px + env(safe-area-inset-bottom));
  max-height: 92vh; overflow-y: auto;
}
.modal-card h2 { margin: 0 0 14px; font-size: 1.15rem; }
.modal-card label { display: block; font-size: .8rem; color: var(--muted); margin: 10px 0 5px; }
.modal-card input, .modal-card select {
  width: 100%; padding: 11px 12px; font-size: 1rem;
  border: 1px solid #cbd5e1; border-radius: 10px; background: #fff;
}
fieldset { border: 1px solid #e2e8f0; border-radius: 10px; margin: 12px 0; padding: 8px 12px 14px; }
fieldset legend { font-size: .8rem; color: var(--muted); padding: 0 6px; }
hr { border: 0; border-top: 1px solid #e2e8f0; margin: 16px 0; }
.row { display: flex; gap: 10px; align-items: flex-end; }
.row .col { flex: 1; }
.row #btn-ruc { flex: 0 0 auto; }

.btn-pri, .btn-sec {
  border: 0; border-radius: 10px; padding: 12px 18px;
  font-size: .95rem; font-weight: 600; cursor: pointer;
}
.btn-pri { background: var(--gold); color: var(--black); }
.btn-sec { background: #eae6d9; color: var(--text); }
.modal-acciones { display: flex; gap: 10px; margin-top: 18px; }
.modal-acciones .btn-pri { flex: 1; }

.error { color: var(--danger); font-size: .85rem; margin: 10px 0 0; white-space: pre-line; }

/* Header con varias acciones */
.header-acciones { display: flex; gap: 8px; }
.icon-btn { display: inline-flex; align-items: center; justify-content: center; }
.icon-btn input[type="file"] { display: none; }

.interes { font-size: .72rem; color: #b45309; font-weight: 600; }

/* Editor de cuotas */
.cuotas-head { display: flex; justify-content: space-between; align-items: center; margin-top: 14px; }
.btn-sec.chico { padding: 6px 12px; font-size: .8rem; }
#cuotas-editor { display: flex; flex-direction: column; gap: 8px; margin-top: 8px; }
.cuota-row {
  display: grid;
  grid-template-columns: 42px 1fr 1fr auto auto 28px;
  gap: 6px; align-items: center;
}
.cuota-row input[type="text"], .cuota-row input:not([type]),
.cuota-row .c-nro, .cuota-row .c-fecha, .cuota-row .c-monto, .cuota-row .c-interes {
  padding: 8px 8px; font-size: .85rem;
}
.c-pagado-wrap { font-size: .72rem; color: var(--muted); display: flex; align-items: center; gap: 3px; }
.c-pagado-wrap input { width: auto; }
.c-del { background: #fee2e2; color: var(--danger); border: 0; border-radius: 8px; padding: 8px; cursor: pointer; }

/* Tab bar inferior */
.tabbar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 6;
  display: flex; align-items: center; justify-content: space-around;
  background: #fff; border-top: 1px solid #e2e8f0;
  padding: 6px 8px calc(6px + env(safe-area-inset-bottom));
}
.tab {
  flex: 1; text-align: center; text-decoration: none; color: var(--muted);
  font-size: .72rem; display: flex; flex-direction: column; align-items: center; gap: 2px;
  padding: 4px; border-radius: 10px;
}
.tab .tab-ico { font-size: 1.2rem; }
.tab.activo { color: var(--gold-deep); font-weight: 600; }
.tab-mas {
  flex: 0 0 auto; width: 52px; height: 52px; border-radius: 50%;
  background: var(--gold); color: var(--black); font-size: 2rem; line-height: 52px;
  margin-top: -18px; box-shadow: 0 4px 12px rgba(212, 175, 55, .5);
}

/* Tarjetas de plan */
.plan-card { display: block; text-decoration: none; color: inherit; }
.plan-chips { display: flex; gap: 8px; margin-top: 8px; }
.chip { font-size: .72rem; font-weight: 600; padding: 3px 10px; border-radius: 999px; background: #e2e8f0; color: var(--muted); }
.chip.ok { background: #dcfce7; color: #15803d; }
.chip.vencida { background: #fee2e2; color: var(--danger); }

/* Detalle de plan (planilla) */
.plan-detalle { padding: 12px 14px; }
.plan-resumen { display: flex; gap: 8px; margin-bottom: 12px; }
.plan-resumen div {
  flex: 1; background: #fff; border-radius: 12px; box-shadow: var(--shadow);
  padding: 10px; text-align: center;
}
.plan-resumen span { display: block; font-size: .72rem; color: var(--muted); }
.plan-resumen b { font-size: .95rem; }
.plan-resumen .verde { color: var(--ok); }
.plan-resumen .rojo { color: var(--danger); }
.plan-toolbar { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 8px; }
.plan-toolbar input[type="search"] {
  flex: 1; min-width: 180px; padding: 10px 12px; font-size: .9rem;
  border: 1px solid #cbd5e1; border-radius: 10px; background: #fff;
}
.hint { font-size: .78rem; color: var(--muted); margin: 4px 0 10px; }

.tabla-wrap { overflow-x: auto; background: #fff; border-radius: 12px; box-shadow: var(--shadow); }
.planilla { width: 100%; border-collapse: collapse; font-size: .85rem; }
.planilla th, .planilla td { padding: 9px 10px; text-align: left; border-bottom: 1px solid #eef2f6; white-space: nowrap; }
.planilla thead th { background: #f8fafc; color: var(--muted); font-size: .72rem; text-transform: uppercase; letter-spacing: .3px; position: sticky; top: 0; }
.planilla td.num { text-align: right; font-variant-numeric: tabular-nums; }
.planilla td.obs { white-space: normal; color: var(--muted); font-size: .8rem; min-width: 140px; }
.planilla tbody tr { cursor: pointer; }
.planilla tbody tr:active { background: #f1f5f9; }
.planilla tr.row-pagada { color: #94a3b8; }
.planilla tr.row-pagada td.num { color: #16a34a; }
.planilla tr.row-vencida td { color: var(--danger); font-weight: 600; }

/* Vista de formulario (nuevo plan) */
.form-vista { padding: 14px 16px; }
.form-vista label { display: block; font-size: .8rem; color: var(--muted); margin: 10px 0 5px; }
.form-vista input, .form-vista select {
  width: 100%; padding: 11px 12px; font-size: 1rem;
  border: 1px solid #cbd5e1; border-radius: 10px; background: #fff;
}
.check-inline { display: flex; align-items: center; gap: 8px; font-size: .85rem; color: var(--text); }
.check-inline input { width: auto; }
.c-nro-col { flex: 0 0 72px; }
.btn-danger { background: #fee2e2; color: var(--danger); border: 0; border-radius: 10px; padding: 12px 16px; font-weight: 600; cursor: pointer; }
.btn-danger.chico { padding: 6px 12px; font-size: .8rem; }

/* Generador de cuotas */
.generador { border: 1px solid #e8d9a8; background: #fdf8ec; border-radius: 12px; margin: 14px 0; padding: 8px 12px 14px; }
.generador legend { color: var(--gold-deep); font-weight: 600; font-size: .82rem; padding: 0 6px; }
.gen-acciones { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }
.btn-pri.chico { padding: 8px 14px; font-size: .82rem; }