:root{
  --azul:#0b3a67;
  --azul2:#145a96;
  --fondo:#eef2f5;
  --panel:#ffffff;
  --borde:#c9d3dd;
  --texto:#1b2733;
  --gris:#64748b;
  --ok:#0f766e;
  --rojo:#b91c1c;
  --amarillo:#92400e;
  --sombra:0 3px 12px rgba(15,23,42,.08);
}
*{box-sizing:border-box}
body{margin:0;font-family:Segoe UI,Arial,sans-serif;background:var(--fondo);color:var(--texto)}
.topbar{height:64px;background:linear-gradient(90deg,var(--azul),var(--azul2));color:white;display:flex;align-items:center;justify-content:space-between;padding:0 18px;gap:18px;border-bottom:1px solid rgba(255,255,255,.15)}
.brand{display:flex;align-items:center;gap:12px;min-width:0}.brand h1{font-size:19px;margin:0;line-height:1.1}.brand p{margin:4px 0 0;font-size:12px;opacity:.9}.logo{width:42px;height:42px;border:2px solid rgba(255,255,255,.85);border-radius:12px;display:flex;align-items:center;justify-content:center;font-weight:900;font-size:22px;box-shadow:inset 0 0 0 1px rgba(255,255,255,.22)}
.topnav{display:flex;align-items:center;gap:9px;white-space:nowrap}.topnav a,.topnav button,.btnArchivo{border:1px solid rgba(255,255,255,.30);background:rgba(255,255,255,.12);color:white;border-radius:9px;padding:9px 11px;text-decoration:none;font-weight:700;font-size:13px;cursor:pointer}.topnav a:hover,.topnav button:hover,.btnArchivo:hover{background:rgba(255,255,255,.20)}.btnArchivo input{display:none}
.layout{display:grid;grid-template-columns:260px minmax(600px,1fr) 330px;height:calc(100vh - 64px);min-height:620px}.sidebar,.rightpanel{background:#f8fafc;border-right:1px solid var(--borde);padding:14px;overflow:auto}.rightpanel{border-right:0;border-left:1px solid var(--borde)}.sidebar h2,.rightpanel h2{font-size:16px;margin:0 0 10px}.menu-modulos{display:grid;gap:8px}.mod-btn{width:100%;text-align:left;background:white;border:1px solid var(--borde);border-radius:12px;padding:12px;cursor:pointer;color:var(--texto);box-shadow:0 1px 2px rgba(15,23,42,.03)}.mod-btn:hover{border-color:#94a3b8;background:#f1f7ff}.mod-btn.activo{border-color:var(--azul2);box-shadow:0 0 0 2px rgba(20,90,150,.12);background:#eef6ff}.mod-btn b{display:block;font-size:14px;margin-bottom:4px}.mod-btn span{display:block;color:var(--gris);font-size:12px;line-height:1.25}.mod-btn .ico{font-size:20px;margin-right:7px;vertical-align:middle}
.workspace{padding:14px;overflow:auto;min-width:0}.module-header{background:white;border:1px solid var(--borde);border-radius:14px;padding:14px 16px;display:grid;grid-template-columns:48px 1fr auto;gap:14px;align-items:center;margin-bottom:12px;box-shadow:var(--sombra)}.module-icon{width:48px;height:48px;border-radius:14px;background:#e8f2ff;color:var(--azul);display:flex;align-items:center;justify-content:center;font-size:24px}.module-header h2{margin:0;font-size:20px}.module-header p{margin:4px 0 0;color:var(--gris);font-size:13px}.module-status{background:#e2e8f0;color:#334155;border-radius:999px;padding:7px 10px;font-size:12px;font-weight:800}.module-status.ok{background:#dcfce7;color:#166534}.module-status.warn{background:#fef3c7;color:#92400e}.module-status.error{background:#fee2e2;color:#991b1b}.module-container{min-height:400px}.estado-box,.nota{background:white;border:1px solid var(--borde);border-radius:12px;padding:12px;margin-bottom:14px;color:#334155;font-size:13px;line-height:1.35}.nota{background:#eef6ff}.small{font-size:12px}.result-list{display:grid;gap:8px}.result-item{background:white;border:1px solid var(--borde);border-radius:10px;padding:10px;font-size:12px}.result-item b{display:block;color:var(--azul);font-size:13px}.result-item span{color:var(--gris)}
.panel{background:white;border:1px solid var(--borde);border-radius:14px;box-shadow:var(--sombra);margin-bottom:12px}.panel .box{padding:14px}.ribbon{padding:12px;display:flex;gap:9px;align-items:center;flex-wrap:wrap}.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.formgrid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.formgrid3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}label{font-size:13px;font-weight:700;color:#334155}input,select,textarea{width:100%;border:1px solid var(--borde);border-radius:9px;padding:9px;background:#fff;color:var(--texto);font-family:Segoe UI,Arial,sans-serif}textarea{min-height:110px;font-family:Consolas,monospace;font-size:14px;resize:vertical}button{border:0;border-radius:9px;padding:10px 13px;background:var(--azul2);color:white;font-weight:800;cursor:pointer}button:hover{filter:brightness(.96)}button.sec{background:#475569}button.ok{background:var(--ok)}button.warn{background:var(--amarillo)}button.rojo{background:var(--rojo)}h2,h3{margin:0 0 10px}.hint{font-size:13px;color:var(--gris);line-height:1.35}.msg{padding:10px 12px;border-radius:10px;background:#ecfeff;border:1px solid #a5f3fc;font-size:13px;margin-top:10px}.msg.error{background:#fff1f2;border-color:#fecdd3;color:#9f1239}.msg.warn{background:#fffbeb;border-color:#fde68a;color:#92400e}.msg.ok{background:#ecfdf5;border-color:#bbf7d0;color:#166534}.kpi{display:grid;grid-template-columns:1fr auto;gap:10px;border-bottom:1px dashed #dbe3ec;padding:8px 0;font-size:13px}.kpi:last-child{border-bottom:0}.kpi b{color:#0f172a}.tabla{width:100%;border-collapse:collapse;font-size:13px}.tabla th,.tabla td{border:1px solid #dbe3ec;padding:8px;text-align:right}.tabla th{background:#f1f5f9;color:#334155}.tabla td:first-child,.tabla th:first-child{text-align:left}.output{background:#0f172a;color:#e5e7eb;border-radius:12px;padding:12px;overflow:auto;font-family:Consolas,monospace;font-size:13px;line-height:1.45;min-height:90px;white-space:pre-wrap}.ecuacion{background:#f8fafc;border:1px solid var(--borde);border-radius:10px;padding:10px;font-family:Consolas,monospace;font-size:13px;line-height:1.45}.badge{display:inline-block;background:#dbeafe;color:#1e3a8a;border-radius:999px;padding:5px 9px;font-size:12px;font-weight:800}.canvasbox{height:360px;background:white;border:1px solid var(--borde);border-radius:12px;overflow:hidden}canvas{width:100%;height:100%}.acciones{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}.reporte{background:white;border:1px solid var(--borde);border-radius:12px;padding:18px}.reporte h1{font-size:22px;margin:0 0 4px}.reporte h2{font-size:17px;margin:20px 0 8px;border-bottom:1px solid #dbe3ec;padding-bottom:6px}.print-only{display:none}
@media(max-width:1150px){.layout{grid-template-columns:220px 1fr}.rightpanel{display:none}.grid2,.grid3{grid-template-columns:1fr}.formgrid,.formgrid3{grid-template-columns:1fr}}
@media print{body{background:white}.topbar,.sidebar,.rightpanel,.module-header,.ribbon,.no-print{display:none!important}.layout{display:block;height:auto}.workspace{padding:0}.panel{box-shadow:none;border:0}.reporte{border:0}.print-only{display:block}}
.canvasbox.alto{height:500px}.reporte.profesional{max-width:980px;margin:auto}.rep-portada{display:grid;grid-template-columns:86px 1fr;gap:18px;align-items:center;border:2px solid var(--azul);border-radius:16px;padding:18px;margin-bottom:18px;background:linear-gradient(180deg,#ffffff,#f8fbff)}.rep-logo{width:74px;height:74px;border-radius:18px;background:var(--azul);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:900;font-size:40px}.rep-portada h1{font-size:28px;margin:0;color:var(--azul)}.rep-portada h2{font-size:17px;margin:5px 0 12px;border:0;padding:0;color:#334155}.rep-pre{white-space:pre-wrap}.rep-footer{margin-top:30px;border-top:1px solid #dbe3ec;padding-top:10px;color:#64748b;text-align:center}.salto-reporte{break-inside:avoid}.canvasbox canvas{display:block}
@media print{.rep-portada{border-color:#0b3a67}.salto-reporte{page-break-inside:avoid}.output{color:#111827;background:#f8fafc;border:1px solid #dbe3ec}}

/* Mejora v4: resultados en líneas y gráficos 3D interactivos más grandes */
.output-lineas{white-space:pre-wrap;line-height:1.55;}
.grid-resultados-grafico{grid-template-columns:minmax(290px,.75fr) minmax(520px,1.55fr);align-items:stretch;}
.canvasbox.grande3d{height:560px;min-height:460px;cursor:grab;}
.canvasbox.grande3d canvas{display:block;}
@media(max-width:1150px){.grid-resultados-grafico{grid-template-columns:1fr}.canvasbox.grande3d{height:500px;}}
@media(max-width:700px){.canvasbox.grande3d{height:420px;}}


/* v5: enfoque ingeniería */
.focus-hero{display:grid;grid-template-columns:1.15fr .85fr;gap:14px;align-items:stretch}
.focus-card{background:linear-gradient(135deg,#0b3a67,#145a96);color:#fff;border-radius:16px;padding:18px;border:1px solid rgba(255,255,255,.15);box-shadow:var(--sombra)}
.focus-card h2{font-size:25px;margin:0 0 8px;color:#fff}.focus-card p{margin:0;line-height:1.45;opacity:.95}
.focus-list{display:grid;gap:8px}.focus-item{background:#fff;border:1px solid var(--borde);border-radius:14px;padding:14px;box-shadow:var(--sombra)}
.focus-item b{color:var(--azul);display:block;margin-bottom:4px}.focus-item span{color:#536273;font-size:13px;line-height:1.35}
.interpretacion{background:#f8fafc;border-left:5px solid var(--azul2);padding:12px 14px;border-radius:12px;color:#334155;line-height:1.45}
.matriz-mini{font-family:Consolas,monospace;background:#0f172a;color:#e5e7eb;border-radius:12px;padding:12px;white-space:pre-wrap;font-size:12px;line-height:1.45}
.canvasbox.mediano{height:430px}.canvasbox.extra{height:620px}
.tagline{display:flex;gap:7px;flex-wrap:wrap;margin-top:10px}.tagline span{background:#dbeafe;color:#1e3a8a;border-radius:999px;padding:5px 9px;font-size:12px;font-weight:800}
.resultado-doble{grid-template-columns:minmax(320px,.9fr) minmax(540px,1.35fr)}
@media(max-width:1150px){.focus-hero,.resultado-doble{grid-template-columns:1fr}.canvasbox.extra{height:480px}}


/* v6: módulos aplicados */
.canvasbox.mini{height:300px}
.legend-row{display:flex;gap:10px;flex-wrap:wrap;font-size:12px;color:#475569;margin-top:8px}.legend-row span{display:inline-flex;align-items:center;gap:5px}.legend-dot{width:12px;height:12px;border-radius:999px;background:#64748b;display:inline-block}
@media(max-width:1150px){.canvasbox.mediano{height:360px}}