:root{
  --azul:#1d4ed8; --azul2:#2563eb; --gris:#f1f5f9; --texto:#1e293b;
  --borde:#e2e8f0; --ok:#16a34a; --warn:#d97706; --crit:#dc2626; --med:#0891b2;
}
*{box-sizing:border-box}
body{margin:0;font-family:"Segoe UI",Arial,sans-serif;color:var(--texto);background:#f8fafc}
a{color:var(--azul);text-decoration:none}
a:hover{text-decoration:underline}

/* Barra lateral */
.layout{display:flex;min-height:100vh}
.side{width:220px;background:#0f172a;color:#cbd5e1;flex-shrink:0;padding:0}
.side h1{font-size:17px;color:#fff;padding:18px 18px 6px}
.side .sub{font-size:11px;color:#64748b;padding:0 18px 14px;border-bottom:1px solid #1e293b}
.side nav a{display:block;color:#cbd5e1;padding:11px 18px;border-left:3px solid transparent}
.side nav a:hover{background:#1e293b;text-decoration:none}
.side nav a.activo{background:#1e293b;border-left-color:var(--azul2);color:#fff}
.badge-side{background:var(--azul2);color:#fff;border-radius:10px;padding:1px 8px;font-size:11px;margin-left:6px}

.main{flex:1;padding:24px 32px;max-width:1200px}
h2{margin-top:0}

/* Tarjetas KPI */
.kpis{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:22px}
.kpi{background:#fff;border:1px solid var(--borde);border-radius:10px;padding:16px 20px;min-width:150px;flex:1}
.kpi .n{font-size:30px;font-weight:700}
.kpi .l{color:#64748b;font-size:13px}
.kpi.crit .n{color:var(--crit)}

/* Tablas */
table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--borde);border-radius:8px;overflow:hidden}
th,td{padding:9px 12px;text-align:left;border-bottom:1px solid var(--borde);font-size:14px}
th{background:var(--gris);font-size:12px;text-transform:uppercase;letter-spacing:.03em;color:#475569}
tr:last-child td{border-bottom:none}
tr:hover td{background:#f8fafc}

/* Botones */
.btn{display:inline-block;background:var(--azul2);color:#fff;padding:8px 16px;border-radius:7px;border:none;cursor:pointer;font-size:14px}
.btn:hover{background:var(--azul);text-decoration:none}
.btn.sec{background:#fff;color:var(--azul);border:1px solid var(--azul)}
.btn.gris{background:#fff;color:#475569;border:1px solid var(--borde)}
.btn.sm{padding:4px 10px;font-size:12px}

/* Etiquetas de estado/urgencia */
.tag{display:inline-block;padding:2px 9px;border-radius:20px;font-size:12px;font-weight:600}
.u-Baja{background:#dcfce7;color:#166534}
.u-Media{background:#cffafe;color:#155e75}
.u-Alta{background:#fed7aa;color:#9a3412}
.u-Critica{background:#fee2e2;color:#991b1b}
.e-Nuevo{background:#dbeafe;color:#1e40af}
.e-Asignado{background:#e0e7ff;color:#3730a3}
.e-En.proceso,.e-Enproceso{background:#fef9c3;color:#854d0e}
.e-En.espera,.e-Enespera{background:#f3e8ff;color:#6b21a8}
.e-Resuelto{background:#dcfce7;color:#166534}
.e-Cerrado{background:#e2e8f0;color:#334155}
.e-Reabierto{background:#fee2e2;color:#991b1b}

/* Formularios */
.form{background:#fff;border:1px solid var(--borde);border-radius:10px;padding:22px;max-width:820px}
.row{display:flex;gap:16px;flex-wrap:wrap}
.field{margin-bottom:14px;flex:1;min-width:220px}
.field.full{flex-basis:100%}
label{display:block;font-size:13px;color:#475569;margin-bottom:4px;font-weight:600}
input,select,textarea{width:100%;padding:8px 10px;border:1px solid #cbd5e1;border-radius:7px;font-size:14px;font-family:inherit}
textarea{min-height:80px;resize:vertical}

/* Barra de filtros */
.filtros{display:flex;gap:10px;flex-wrap:wrap;align-items:flex-end;background:#fff;border:1px solid var(--borde);border-radius:10px;padding:14px;margin-bottom:18px}
.filtros .field{margin-bottom:0;min-width:140px}

/* Barra de avance */
.prog{background:#e2e8f0;border-radius:20px;height:10px;overflow:hidden;min-width:80px}
.prog > div{background:var(--azul2);height:100%}

.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}
.flash{padding:11px 16px;border-radius:8px;margin-bottom:14px;font-size:14px}
.flash.ok{background:#dcfce7;color:#166534}
.flash.error{background:#fee2e2;color:#991b1b}
.muted{color:#64748b;font-size:13px}
.card{background:#fff;border:1px solid var(--borde);border-radius:10px;padding:18px;margin-bottom:16px}
.bitacora{border-left:3px solid var(--azul2);padding:6px 12px;margin:8px 0;background:#f8fafc}

/* Tarjetas de ticket (vista de agente) */
.tcards{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}
.tcard{background:#fff;border:1px solid var(--borde);border-left:6px solid var(--azul2);border-radius:12px;padding:18px;display:block}
.tcard:hover{box-shadow:0 6px 18px rgba(0,0,0,.10);text-decoration:none}
.tcard .folio{font-size:12px;color:#64748b}
.tcard .asunto{font-size:18px;font-weight:600;margin:6px 0 12px;color:var(--texto)}
.tcard.u-Critica{border-left-color:var(--crit)}
.tcard.u-Alta{border-left-color:#d97706}
.tcard.u-Media{border-left-color:#0891b2}
.tcard.u-Baja{border-left-color:#16a34a}

/* Modo simple (usuarios "Solo tickets"): letra y botones mas grandes */
.modo-simple{font-size:17px}
.modo-simple h2{font-size:30px}
.modo-simple .btn{font-size:17px;padding:12px 24px}
.modo-simple label{font-size:15px}
.modo-simple input,.modo-simple select,.modo-simple textarea{font-size:16px;padding:11px 12px}
.modo-simple .side nav a{font-size:16px;padding:14px 18px}