:root{
  --bg:#f4f6f9;--bg-card:#ffffff;--border:#e2e8f0;--text:#1f2937;--text-muted:#64748b;
  --azul:#2563eb;--azul-suave:#dbeafe;--azul-oscuro:#1e3a8a;--gris-claro:#f1f5f9;--gris-medio:#94a3b8;
  --verde:#16a34a;--verde-suave:#dcfce7;--rojo:#dc2626;--rojo-suave:#fee2e2;
  --ambar:#d97706;--ambar-suave:#fef3c7;
  --radius:10px;--sombra:0 1px 3px rgba(15,23,42,.06),0 1px 2px rgba(15,23,42,.04);
}
*{box-sizing:border-box}
body{margin:0;font-family:'Segoe UI',system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text)}
.app-shell{display:flex;min-height:100vh}

/* Sidebar */
.sidebar{width:230px;flex-shrink:0;background:var(--azul-oscuro);color:#e2e8f0;display:flex;flex-direction:column;padding:20px 0}
.sidebar h1{font-size:15px;padding:0 20px 16px;margin:0 0 12px;border-bottom:1px solid rgba(255,255,255,.12);color:#fff;display:flex;align-items:center;gap:8px}
.sidebar h1 span.dot{width:9px;height:9px;border-radius:50%;background:#60a5fa;display:inline-block}
.navlink{display:flex;align-items:center;gap:10px;padding:11px 20px;color:#cbd5e1;text-decoration:none;font-size:14px;cursor:pointer;border-left:3px solid transparent}
.navlink:hover{background:rgba(255,255,255,.06);color:#fff}
.navlink.active{background:rgba(37,99,235,.25);color:#fff;border-left-color:#60a5fa}
.sidebar-footer{margin-top:auto;padding:14px 20px;font-size:11px;color:#94a3b8}

/* Main */
main{flex:1;padding:28px 34px;max-width:1300px}
.view{display:none}
.view.active{display:block;animation:fadein .18s ease}
@keyframes fadein{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}
.page-header{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:18px;flex-wrap:wrap;gap:10px}
.page-header h2{margin:0;font-size:22px;color:var(--azul-oscuro)}
.page-header p{margin:2px 0 0;color:var(--text-muted);font-size:13px}
.page-actions{display:flex;gap:10px;flex-wrap:wrap}

/* Alertas */
#banner-alertas,#alertas-recordatorios{margin-bottom:18px;display:flex;flex-direction:column;gap:8px}
.alerta{background:var(--ambar-suave);color:#92400e;border:1px solid #fcd34d;border-radius:8px;padding:10px 14px;font-size:13.5px;font-weight:600}
.alerta.urgente{background:var(--rojo-suave);color:#991b1b;border-color:#fca5a5}

/* KPI */
.grid-kpi{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:14px;margin-bottom:22px}
.kpi{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:16px 18px;box-shadow:var(--sombra)}
.kpi small{color:var(--text-muted);font-size:11.5px;text-transform:uppercase;letter-spacing:.03em}
.kpi .valor{font-size:22px;font-weight:700;margin-top:6px;color:var(--azul-oscuro)}
.kpi.acento{border-left:4px solid var(--azul)}

.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;box-shadow:var(--sombra);margin-bottom:20px}
.card h3{margin:0 0 14px;font-size:15px;color:var(--azul-oscuro)}

/* Forms */
form.grid-form{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px;align-items:end}
label{font-size:12px;color:var(--text-muted);display:block;margin-bottom:4px}
input,select,textarea{width:100%;padding:9px 10px;border:1px solid var(--border);border-radius:7px;font-size:13.5px;background:#fbfcfe;color:var(--text)}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--azul);background:#fff}
.btn{background:var(--azul);color:#fff;border:none;padding:10px 18px;border-radius:7px;font-size:13.5px;cursor:pointer;font-weight:600}
.btn:hover{background:#1d4ed8}
.btn-secundario{background:var(--gris-claro);color:var(--text);border:1px solid var(--border)}
.btn-secundario:hover{background:#e2e8f0}
.btn-sm{padding:5px 10px;font-size:12px;border-radius:6px;border:1px solid var(--border);background:#fff;cursor:pointer}
.btn-sm:hover{background:var(--gris-claro)}
.btn-danger{color:var(--rojo);border-color:var(--rojo-suave)}
.btn-danger:hover{background:var(--rojo-suave)}
.btn-grande{padding:14px 20px;font-size:14.5px}

/* Tables */
table{width:100%;border-collapse:collapse;font-size:13px}
thead th{text-align:left;color:var(--text-muted);font-weight:600;font-size:11.5px;text-transform:uppercase;letter-spacing:.03em;padding:8px 10px;border-bottom:2px solid var(--border)}
tbody td{padding:9px 10px;border-bottom:1px solid var(--border)}
tbody tr:hover{background:var(--gris-claro)}
tr.conciliado{background:var(--verde-suave)}
td.num{text-align:right;font-variant-numeric:tabular-nums}
td.center{text-align:center}
td.acciones{white-space:nowrap;text-align:right}
.empty{text-align:center;color:var(--gris-medio);padding:22px !important}
.tag{padding:2px 9px;border-radius:20px;font-size:11px;font-weight:600}
.tag.ingreso{background:var(--verde-suave);color:var(--verde)}
.tag.egreso{background:var(--rojo-suave);color:var(--rojo)}

/* Calc */
.calc-box{background:var(--gris-claro);border-radius:8px;padding:14px 16px;margin-bottom:12px}
.calc-row{display:flex;justify-content:space-between;padding:6px 0;font-size:13.5px;border-bottom:1px dashed var(--border)}
.calc-row:last-child{border-bottom:none}
.calc-row.total{font-weight:700;color:var(--azul-oscuro);font-size:15px;border-top:2px solid var(--border);margin-top:4px;padding-top:10px}
.calc-row.total.favor{color:var(--verde)}
.nota{font-size:12px;color:var(--text-muted);background:var(--azul-suave);padding:10px 12px;border-radius:8px;margin:10px 0}
.opciones-calculo{display:flex;flex-direction:column;gap:10px;margin-top:14px}
.opcion-calc{text-align:left}

/* Recordatorios */
.recordatorio{display:flex;align-items:center;gap:14px;padding:12px 14px;border:1px solid var(--border);border-radius:8px;margin-bottom:10px;background:#fff}
.recordatorio.inactivo{opacity:.5}
.recordatorio-info{flex:1}
.recordatorio-info small{display:block;color:var(--text-muted)}
.switch{position:relative;display:inline-block;width:38px;height:22px;flex-shrink:0}
.switch input{opacity:0;width:0;height:0}
.switch span{position:absolute;inset:0;background:#cbd5e1;border-radius:20px;transition:.2s;cursor:pointer}
.switch span:before{content:"";position:absolute;height:16px;width:16px;left:3px;top:3px;background:#fff;border-radius:50%;transition:.2s}
.switch input:checked + span{background:var(--azul)}
.switch input:checked + span:before{transform:translateX(16px)}

/* Toolbar */
.toolbar{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:14px;align-items:end}
.toolbar > div{min-width:160px}
.rep-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px}
.rep-acciones{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}
footer.nota-final{margin-top:30px;font-size:11.5px;color:var(--gris-medio);text-align:center}

/* Modal */
#modal-root{display:none}
#modal-root.open{display:block}
.modal-overlay{
  position:fixed;inset:0;background:rgba(15,23,42,.45);display:flex;align-items:flex-start;
  justify-content:center;padding:40px 16px;overflow-y:auto;z-index:100;
}
.modal-box{
  background:#fff;border-radius:12px;padding:26px 28px;max-width:560px;width:100%;
  box-shadow:0 20px 40px rgba(15,23,42,.2);position:relative;
}
.modal-box.wide{max-width:720px}
.modal-close{
  position:absolute;top:14px;right:16px;background:none;border:none;font-size:16px;
  cursor:pointer;color:var(--text-muted);
}
.modal-close:hover{color:var(--text)}
.modal-box h3{margin-top:0;color:var(--azul-oscuro)}
.modal-tabs{display:flex;gap:6px;margin-bottom:16px;border-bottom:1px solid var(--border)}
.tabbtn{background:none;border:none;padding:9px 14px;font-size:13px;color:var(--text-muted);cursor:pointer;border-bottom:2px solid transparent}
.tabbtn.active{color:var(--azul);border-bottom-color:var(--azul);font-weight:600}
.modal-tab{display:none}
.modal-tab.active{display:block}

@media(max-width:820px){
  .app-shell{flex-direction:column}
  .sidebar{width:100%;flex-direction:row;overflow-x:auto;padding:10px}
  .sidebar h1{display:none}
  .sidebar-footer{display:none}
  .navlink{white-space:nowrap;border-left:none;border-bottom:3px solid transparent}
  .navlink.active{border-left:none;border-bottom-color:#60a5fa}
  main{padding:18px}
  .modal-box{padding:20px}
}