:root{
  --paper:#F1F3EC; --paper-raised:#E7EBDE; --paper-white:#FBFAF6;
  --ink:#2B2A25; --ink-muted:#6B6A5D; --ink-faint:#9C9A88;
  --rule:#7A9B85; --rule-soft:#D3DACB;
  --ledger-red:#8C2F2A; --ledger-red-light:#B0524A;
  --ledger-blue:#2C4A7C; --ledger-green:#2F5233; --ledger-violet:#5B3A7A;
  --sans:'IBM Plex Sans',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  --serif:'Source Serif 4',Georgia,'Times New Roman',serif;
  --mono:'IBM Plex Mono','SFMono-Regular',Consolas,'Liberation Mono',monospace;
  --stamp:'Special Elite',var(--mono);
}
*{box-sizing:border-box}
body{
  margin:0; background:var(--paper); color:var(--ink);
  font:14px/1.5 var(--sans);
}
h1{font-family:var(--serif);font-size:21px;margin:0;font-weight:600}
h2{font-family:var(--serif);font-size:16px;margin:0 0 14px;color:var(--ink);font-weight:600;
  padding-bottom:8px;border-bottom:1px solid var(--rule-soft)}
.sub,.nota{color:var(--ink-muted);font-size:12px;font-weight:400}
.sub{margin:3px 0 0}

/* ---------- cabecera ---------- */
.top{
  display:flex;justify-content:space-between;align-items:center;gap:16px;
  padding:16px 24px;background:var(--paper);border-bottom:4px double var(--ink);
  flex-wrap:wrap;
}
.tasa-box{display:flex;align-items:center;gap:8px;background:var(--paper-white);
  border:1px solid var(--rule);border-left:3px solid var(--ledger-blue);
  border-radius:0;padding:6px 12px}
.tasa-box label{color:var(--ink-muted);font-size:12px;font-family:var(--sans)}
.tasa-box input{width:100px;background:transparent;border:none;color:var(--ledger-blue);
  font-family:var(--mono);font-weight:600;font-size:15px;padding:2px 0}
.tasa-box input:focus{outline:none}

/* ---------- pestanas (fichero de carpeta) ---------- */
.tabs{display:flex;gap:0;padding:14px 24px 0;background:transparent;
  border-bottom:2px solid var(--ink);overflow-x:auto}
.tab{
  background:var(--paper-raised);border:1px solid var(--rule);border-bottom:2px solid var(--ink);
  color:var(--ink-muted);border-radius:5px 5px 0 0;margin-right:-1px;
  padding:9px 20px;cursor:pointer;font:600 13px var(--sans);white-space:nowrap;position:relative;
}
.tab:hover{color:var(--ink)}
.tab.activo{
  background:var(--paper);color:var(--ink);border-color:var(--ink);
  border-bottom-color:var(--paper);z-index:2;
  box-shadow:0 -3px 8px rgba(43,42,37,0.10);
}

main{padding:24px;max-width:1400px;margin:0 auto}
.oculto{display:none !important}

/* ---------- paneles y formularios ---------- */
.panel{background:var(--paper-white);border:1px solid var(--rule);border-radius:0;padding:18px 20px;margin-bottom:20px}
summary{cursor:pointer;font-weight:600;color:var(--ledger-blue);margin:-4px 0 0;font-family:var(--sans)}
details[open] summary{margin-bottom:14px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}
.grid .ancho{grid-column:1/-1}
.dos-col{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:start}
@media(max-width:860px){.dos-col{grid-template-columns:1fr}}

label{display:flex;flex-direction:column;gap:4px;font-size:12px;color:var(--ink-muted);margin-bottom:10px}
input,select{
  background:var(--paper-white);border:1px solid var(--rule);color:var(--ink);
  border-radius:2px;padding:8px 10px;font-size:14px;font-family:var(--sans);
}
input:focus,select:focus{outline:2px solid var(--ledger-blue);outline-offset:1px;border-color:var(--ledger-blue)}
label.check{flex-direction:row;align-items:center;gap:8px;color:var(--ink);font-size:13px;
  background:var(--paper-raised);padding:10px;border-radius:2px;border:1px solid var(--rule)}
label.check input{width:auto}
button{
  background:var(--ledger-green);color:var(--paper-white);border:1px solid var(--ledger-green);
  border-radius:2px;padding:9px 18px;font-size:14px;font-weight:700;font-family:var(--sans);cursor:pointer;
}
button:hover{filter:brightness(1.15)}
button:focus-visible{outline:2px solid var(--ledger-blue);outline-offset:2px}
button.mini{padding:6px 12px;font-size:12px}
button.link{background:none;color:var(--ledger-blue);border-color:transparent;padding:2px 6px;font-weight:500;text-decoration:underline}

/* ---------- resumen: tira de cuadre ---------- */
.kpis{display:flex;flex-wrap:wrap;border:1px solid var(--rule);border-top:3px double var(--ink);
  background:var(--paper-white);margin-bottom:24px}
.kpi{flex:1 1 150px;padding:14px 18px;border-right:1px solid var(--rule-soft)}
.kpi:last-child{border-right:none}
.kpi .rot{color:var(--ink-muted);font-size:12px;font-family:var(--sans)}
.kpi .val{font-size:21px;font-weight:600;font-family:var(--mono);font-variant-numeric:tabular-nums;
  margin-top:6px;color:var(--ink)}
.kpi.ok .val{color:var(--ledger-green)}
.kpi.mal .val{color:var(--ledger-red);display:inline-block;border-bottom:3px double var(--ledger-red);padding-bottom:5px}
.kpi.med .val{color:var(--ink)}

/* ---------- antiguedad de saldos (grafico) ---------- */
.grafico-box{background:var(--paper-white);border:1px solid var(--rule);border-radius:0;
  padding:16px;margin-bottom:20px}
.grafico-box h2{margin-bottom:14px}
#grafico-antiguedad{max-height:220px}

/* ---------- tablas ---------- */
.tabla-wrap{overflow-x:auto;border:1px solid var(--rule);border-radius:0;background:var(--paper-white)}
table{width:100%;border-collapse:collapse;font-size:13px}
th,td{padding:9px 12px;text-align:left;border-bottom:1px solid var(--rule-soft);white-space:nowrap}
.input-tabla{width:70px;padding:4px 6px;font-size:13px;text-align:right}
.input-tabla-texto{width:100%;min-width:110px;padding:4px 6px;font-size:13px;text-align:left}
th{background:var(--paper-raised);color:var(--ink-muted);font-weight:600;font-size:12px;
  font-family:var(--sans);border-bottom:2px solid var(--ink);position:sticky;top:0}
tbody tr:hover{background:#ECEFE3}
tbody tr:last-child td{border-bottom:none}
.num{text-align:right;font-family:var(--mono);font-variant-numeric:tabular-nums}
/* la cifra en <b> es el saldo/total de la fila: la regla roja marca la columna de cierre */
td.num:has(b){border-left:2px solid var(--ledger-red)}
td.num b{color:var(--ledger-red);font-weight:600}

/* ---------- sello de estado (en vez de pastilla) ---------- */
.badge{display:inline-block;font-family:var(--stamp);font-size:11px;letter-spacing:.4px;
  padding:3px 10px;border:1.5px solid currentColor;border-radius:3px;
  background:transparent;transform:rotate(-2deg)}
.b-PAGADA{color:var(--ledger-green)}
.b-PENDIENTE{color:var(--ink-muted)}
.b-PARCIAL{color:var(--ledger-blue)}
.b-VENCIDA,.b-PARCIALVENCIDA{color:var(--ledger-red)}
.b-SOBREPAGO{color:var(--ledger-violet)}
.b-ANULADA{color:var(--ink-faint);text-decoration:line-through}
.b-ADJUNTO{color:var(--ink-muted);transform:none}
.b-LOTE-OK{color:var(--ledger-green)}
.b-LOTE-PROBLEMA{color:var(--ledger-red)}

/* etiqueta de moneda: refuerza el escaneo rapido USD/VES */
.money-USD{color:var(--ledger-blue)}
.money-VES{color:var(--ink)}

.barra{height:5px;background:var(--paper-raised);border-radius:0;overflow:hidden;min-width:60px}
.barra i{display:block;height:100%;background:var(--ledger-green)}

/* ---------- preview de saldo ---------- */
#preview-body.vacio{color:var(--ink-muted);font-size:13px}
.linea{display:flex;justify-content:space-between;padding:7px 0;border-bottom:1px solid var(--rule-soft);font-size:13px}
.linea:last-child{border-bottom:none}
.linea b{font-family:var(--mono)}
.linea.destacado{font-size:16px;padding:12px 0;border-top:3px double var(--ink);margin-top:4px}
.linea.destacado b{color:var(--ledger-red)}

.mensaje{margin-top:16px;padding:12px 16px;border-radius:0;font-size:13px;font-family:var(--sans);
  background:var(--paper-white);border:1px solid var(--rule);border-left:4px solid var(--ledger-green);color:var(--ink)}
.mensaje.error{border-left-color:var(--ledger-red)}
.mensaje.aviso{border-left-color:var(--ledger-blue)}
.filtros{margin-bottom:14px}

/* ---------- modal reporte ---------- */
.modal-reporte{
  position:fixed;inset:0;background:rgba(43,42,37,0.75);
  z-index:1000;overflow-y:auto;
}
.modal-contenido{
  background:var(--paper-white);color:var(--ink);max-width:900px;margin:40px auto;
  padding:24px;border-radius:2px;box-shadow:0 10px 40px rgba(0,0,0,0.35);
  font-family:var(--sans);
}
.modal-contenido .btn-cerrar{
  float:right;margin-bottom:12px;
}
.reporte h2{
  color:var(--ink);font-family:var(--serif);font-size:22px;margin:0 0 16px;font-weight:600;border-bottom:none;
}
.cliente-info{
  margin-bottom:20px;font-size:13px;
}
.cliente-info p{margin:4px 0}
.tabla-reporte{
  width:100%;border-collapse:collapse;font-size:12px;margin-bottom:16px;
}
.tabla-reporte th,.tabla-reporte td{
  border:1px solid var(--rule-soft);padding:6px 8px;text-align:left;
}
.tabla-reporte th{
  background:var(--paper-raised);font-weight:600;
}
.tabla-reporte .num{text-align:right;font-family:var(--mono)}
.factura-row{background:var(--paper-white)}
.pagos-row{background:var(--paper-raised)}
.pagos-row td{padding:8px}
.tabla-pagos{
  width:100%;border-collapse:collapse;font-size:11px;margin-top:4px;
}
.tabla-pagos th,.tabla-pagos td{
  border:1px solid var(--rule-soft);padding:4px 6px;
}
.tabla-pagos th{background:var(--paper-raised)}
.totales{
  margin:16px 0;
}
.totales h3{
  font-family:var(--serif);font-size:15px;margin-bottom:8px;color:var(--ink);font-weight:600;
}
.resumen-moneda{
  display:flex;gap:24px;margin-bottom:6px;font-size:13px;
}
.fecha-reporte{
  margin-top:16px;color:var(--ink-muted);
}
.reporte .money-USD{color:var(--ledger-blue)}
.reporte .money-VES{color:var(--ink)}

/* ---------- cotizaciones ---------- */
.lineas-box{
  background:var(--paper-raised);border:1px solid var(--rule);border-radius:0;
  padding:14px;margin:8px 0 14px;
}
.lineas-box h3{
  font-family:var(--serif);font-size:14px;margin:0 0 10px;color:var(--ink);border-bottom:none;font-weight:600;
}
.linea-inputs{
  display:flex;gap:8px;margin-bottom:12px;align-items:center;
}
#buscar-producto-cot{width:100%;margin-bottom:8px}
.linea-inputs select{flex:2;min-width:220px}
.linea-inputs input{flex:1;min-width:90px}
.linea-inputs button{flex:0 0 auto}
#tabla-lineas-cot{margin-bottom:10px}
.totales-cot{
  display:flex;gap:24px;font-size:13px;color:var(--ink-muted);flex-wrap:wrap;
  border-top:2px solid var(--ink);padding-top:10px;margin-top:6px;
}
.totales-cot b{
  color:var(--ink);font-family:var(--mono);
}
.b-COT-BORRADOR{color:var(--ink-muted)}
.b-COT-ENVIADA{color:var(--ledger-blue)}
.b-COT-ACEPTADA{color:var(--ledger-green)}
.b-COT-RECHAZADA{color:var(--ledger-red)}
.b-COT-FACTURADA{color:var(--ledger-violet)}

@media print{
  body *{visibility:hidden}
  #modal-reporte,#modal-reporte *{visibility:visible}
  #modal-reporte{
    position:absolute;left:0;top:0;width:100%;margin:0;padding:0;
    background:#fff;overflow:visible;
  }
  .modal-contenido{
    margin:0;padding:12px;max-width:none;box-shadow:none;
  }
  .no-print{display:none !important}
  .tabla-reporte,.tabla-pagos{page-break-inside:auto}
  .factura-row{page-break-inside:avoid}
}

/* ---------- login: la tapa del libro ---------- */
.login-overlay{
  position:fixed;inset:0;z-index:1000;overflow-y:auto;
  display:flex;align-items:center;justify-content:center;padding:24px;
  background:
    radial-gradient(circle at 20% 15%, #3A2420 0%, transparent 55%),
    radial-gradient(circle at 85% 85%, #16281C 0%, transparent 50%),
    var(--ink);
}
.login-card{
  position:relative;width:min(380px,100%);
  background:linear-gradient(160deg,#33532F 0%,#22391F 60%,#182B16 100%);
  border:1px solid #142313;border-radius:4px;padding:38px 32px 28px;
  box-shadow:0 24px 60px rgba(0,0,0,0.55), inset 0 0 0 1px rgba(255,255,255,0.05);
  text-align:center;overflow:hidden;color:#EDE7D6;
}
.login-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:4px;
  background:linear-gradient(90deg,#8C6A22,#E6C878,#8C6A22);
}
.login-card h1{font-size:20px;color:#F3ECD9;letter-spacing:.3px}
.login-card .sub{margin-bottom:24px;color:#C9C2A8}
.login-card form{display:flex;flex-direction:column;gap:14px}
.login-card label{margin-bottom:0;align-items:center;color:#C9C2A8}
.campo-input{
  position:relative;display:block;width:100%;box-sizing:border-box;
}
.campo-input input{
  display:block;box-sizing:border-box;width:100%;
  padding:11px 12px;font-size:15px;text-align:center;
  background:var(--paper-white);color:var(--ink);border:1px solid rgba(0,0,0,0.25);
}
.campo-password input{padding-right:40px;text-align:left}
.toggle-password{
  position:absolute;right:4px;top:50%;transform:translateY(-50%);
  background:none;border:none;padding:6px;color:var(--ink-muted);
  display:flex;align-items:center;justify-content:center;cursor:pointer;
}
.toggle-password:hover{color:var(--ledger-blue)}
.btn-entrar{
  width:100%;padding:12px;font-size:15px;margin-top:6px;
  display:flex;align-items:center;justify-content:center;gap:8px;
  background:#C9A227;color:#2B2A25;border-color:#C9A227;
}
.btn-entrar:disabled{opacity:.75;cursor:default}
.btn-entrar:disabled:hover{filter:none}
.btn-spinner{
  width:15px;height:15px;border-radius:50%;
  border:2px solid rgba(43,42,37,0.35);border-top-color:#2B2A25;
  animation:girar .7s linear infinite;
}
@keyframes girar{to{transform:rotate(360deg)}}
#login-error{margin-top:18px;text-align:center}
@media(max-width:420px){
  .login-card{padding:28px 20px 22px}
}
@media(prefers-reduced-motion:reduce){
  .btn-spinner{animation-duration:1.4s}
}