/* ============================================================
   J4 DESIGN SYSTEM - Ecosistema de software J4
   Azul marino corporativo + estados semánticos.
   100% responsive: desktop / tablet / móvil.
   ============================================================ */

:root {
  /* Marca */
  --j4-navy-900: #0A1F38;
  --j4-navy-800: #10294A;
  --j4-navy-700: #14355F;   /* principal */
  --j4-navy-600: #1C4B85;
  --j4-navy-500: #2563A8;
  --j4-blue:     #3B82D6;
  /* Estados */
  --j4-success: #1E9E5A;
  --j4-success-bg: #E7F6EE;
  --j4-warning: #E9A23B;
  --j4-warning-bg: #FCF3E3;
  --j4-danger:  #D64545;
  --j4-danger-bg: #FBEAEA;
  --j4-info:    #2E9BD6;
  --j4-info-bg: #E8F4FB;
  /* Neutros */
  --j4-bg:      #F5F7FA;
  --j4-surface: #FFFFFF;
  --j4-border:  #E4E9F0;
  --j4-text:    #1D2733;
  --j4-text-2:  #5A6B7F;
  --j4-text-3:  #8B99A9;
  /* Métricas */
  --j4-radius: 10px;
  --j4-radius-sm: 6px;
  --j4-shadow: 0 1px 3px rgba(16, 41, 74, .08), 0 4px 14px rgba(16, 41, 74, .06);
  --j4-shadow-lg: 0 8px 30px rgba(16, 41, 74, .16);
  --j4-sidebar-w: 248px;
  --j4-topbar-h: 60px;
  --j4-font: 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue', Arial, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--j4-font);
  background: var(--j4-bg);
  color: var(--j4-text);
  font-size: 14.5px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--j4-navy-500); text-decoration: none; }
a:hover { text-decoration: underline; }
h1,h2,h3,h4 { margin: 0 0 .5rem; color: var(--j4-navy-800); line-height: 1.25; }
h1 { font-size: 1.45rem; } h2 { font-size: 1.2rem; } h3 { font-size: 1.05rem; }

/* ---------- Layout: sidebar + topbar ---------- */
.j4-layout { display: flex; min-height: 100vh; }
.j4-sidebar {
  width: var(--j4-sidebar-w);
  background: linear-gradient(180deg, var(--j4-navy-800), var(--j4-navy-900));
  color: #C9D6E5;
  position: fixed; inset: 0 auto 0 0;
  z-index: 50;
  display: flex; flex-direction: column;
  transition: transform .25s ease;
}
.j4-brand {
  display: flex; align-items: center; gap: 10px;
  padding: 16px 18px; border-bottom: 1px solid rgba(255,255,255,.08);
}
.j4-brand .logo {
  width: 34px; height: 34px; border-radius: 8px;
  background: var(--j4-blue);
  display: grid; place-items: center;
  color: #fff; font-weight: 800; font-size: 15px;
  letter-spacing: -.5px;
}
.j4-brand .nombre { color: #fff; font-weight: 700; font-size: 15.5px; }
.j4-brand .sub { font-size: 11px; color: #8FA6C0; display: block; margin-top: -2px; }

.j4-nav { flex: 1; overflow-y: auto; padding: 12px 10px; }
.j4-nav .seccion {
  font-size: 10.5px; text-transform: uppercase; letter-spacing: .8px;
  color: #6E86A3; padding: 14px 10px 6px;
}
.j4-nav a {
  display: flex; align-items: center; gap: 10px;
  color: #C9D6E5; padding: 9px 12px; border-radius: 8px;
  font-size: 14px; margin-bottom: 2px;
}
.j4-nav a:hover { background: rgba(255,255,255,.07); text-decoration: none; }
.j4-nav a.activo { background: var(--j4-blue); color: #fff; font-weight: 600; }
.j4-nav .icono { width: 20px; text-align: center; font-size: 15px; }

.j4-main { flex: 1; margin-left: var(--j4-sidebar-w); display: flex; flex-direction: column; min-width: 0; }
.j4-topbar {
  height: var(--j4-topbar-h);
  background: var(--j4-surface);
  border-bottom: 1px solid var(--j4-border);
  display: flex; align-items: center; gap: 14px;
  padding: 0 20px;
  position: sticky; top: 0; z-index: 40;
}
.j4-topbar .hamburguesa {
  display: none; background: none; border: none;
  font-size: 22px; color: var(--j4-navy-700); cursor: pointer; padding: 4px 8px;
}
.j4-topbar .empresa-actual {
  background: var(--j4-info-bg); color: var(--j4-navy-700);
  padding: 5px 12px; border-radius: 20px; font-size: 13px; font-weight: 600;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 340px;
}
.j4-topbar .spacer { flex: 1; }
.j4-usuario { display: flex; align-items: center; gap: 10px; font-size: 13.5px; color: var(--j4-text-2); }
.j4-usuario .avatar {
  width: 34px; height: 34px; border-radius: 50%;
  background: var(--j4-navy-600); color: #fff;
  display: grid; place-items: center; font-weight: 700; font-size: 14px;
}
.j4-contenido { padding: 22px; max-width: 1400px; width: 100%; margin: 0 auto; }

/* ---------- Tarjetas ---------- */
.card {
  background: var(--j4-surface);
  border: 1px solid var(--j4-border);
  border-radius: var(--j4-radius);
  box-shadow: var(--j4-shadow);
  margin-bottom: 18px;
}
.card-header {
  padding: 14px 18px; border-bottom: 1px solid var(--j4-border);
  display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap;
}
.card-header h2, .card-header h3 { margin: 0; }
.card-body { padding: 18px; }
.card-footer { padding: 12px 18px; border-top: 1px solid var(--j4-border); background: #FAFBFC; border-radius: 0 0 var(--j4-radius) var(--j4-radius); }

/* KPI cards del dashboard */
.kpi-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 18px; }
.kpi {
  background: var(--j4-surface); border: 1px solid var(--j4-border);
  border-radius: var(--j4-radius); padding: 16px 18px; box-shadow: var(--j4-shadow);
  border-left: 4px solid var(--j4-navy-600);
}
.kpi.exito { border-left-color: var(--j4-success); }
.kpi.alerta { border-left-color: var(--j4-warning); }
.kpi.peligro { border-left-color: var(--j4-danger); }
.kpi .etiqueta { font-size: 12px; color: var(--j4-text-2); text-transform: uppercase; letter-spacing: .5px; }
.kpi .valor { font-size: 1.65rem; font-weight: 800; color: var(--j4-navy-800); margin-top: 2px; }
.kpi .nota { font-size: 12.5px; color: var(--j4-text-3); }

/* ---------- Botones ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 7px; justify-content: center;
  border: 1px solid transparent; border-radius: var(--j4-radius-sm);
  padding: 8px 16px; font-size: 14px; font-weight: 600;
  cursor: pointer; font-family: inherit; line-height: 1.4;
  transition: background .15s, box-shadow .15s; text-decoration: none !important;
}
.btn:focus-visible { outline: 3px solid rgba(59,130,214,.35); outline-offset: 1px; }
.btn-primario { background: var(--j4-navy-700); color: #fff; }
.btn-primario:hover { background: var(--j4-navy-600); }
.btn-secundario { background: #fff; color: var(--j4-navy-700); border-color: var(--j4-border); }
.btn-secundario:hover { background: var(--j4-bg); }
.btn-exito { background: var(--j4-success); color: #fff; }
.btn-exito:hover { filter: brightness(1.07); }
.btn-peligro { background: var(--j4-danger); color: #fff; }
.btn-peligro:hover { filter: brightness(1.07); }
.btn-fantasma { background: transparent; color: var(--j4-navy-500); }
.btn-sm { padding: 5px 11px; font-size: 13px; }
.btn:disabled { opacity: .55; cursor: not-allowed; }

/* ---------- Tablas ---------- */
.tabla-wrap { overflow-x: auto; }
.tabla { width: 100%; border-collapse: collapse; font-size: 13.8px; }
.tabla th {
  text-align: left; padding: 10px 14px;
  background: #F0F3F8; color: var(--j4-navy-800);
  font-size: 12px; text-transform: uppercase; letter-spacing: .5px;
  border-bottom: 2px solid var(--j4-border); white-space: nowrap;
}
.tabla td { padding: 10px 14px; border-bottom: 1px solid var(--j4-border); vertical-align: middle; }
.tabla tbody tr:hover { background: #F7FAFD; }
.tabla .num { text-align: right; font-variant-numeric: tabular-nums; }
.tabla tfoot td { font-weight: 700; background: #F0F3F8; }

/* ---------- Badges de estado ---------- */
.badge {
  display: inline-block; padding: 3px 10px; border-radius: 20px;
  font-size: 12px; font-weight: 700; white-space: nowrap;
}
.badge-exito { background: var(--j4-success-bg); color: var(--j4-success); }
.badge-alerta { background: var(--j4-warning-bg); color: #B57A1C; }
.badge-peligro { background: var(--j4-danger-bg); color: var(--j4-danger); }
.badge-info { background: var(--j4-info-bg); color: var(--j4-info); }
.badge-neutro { background: #EEF1F5; color: var(--j4-text-2); }

/* ---------- Formularios ---------- */
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px 18px; }
.form-grid .full { grid-column: 1 / -1; }
.campo label { display: block; font-size: 13px; font-weight: 600; color: var(--j4-navy-800); margin-bottom: 5px; }
.campo .req { color: var(--j4-danger); }
.campo input, .campo select, .campo textarea {
  width: 100%; padding: 9px 12px;
  border: 1px solid var(--j4-border); border-radius: var(--j4-radius-sm);
  font-size: 14px; font-family: inherit; background: #fff; color: var(--j4-text);
  transition: border-color .15s, box-shadow .15s;
}
.campo input:focus, .campo select:focus, .campo textarea:focus {
  outline: none; border-color: var(--j4-blue);
  box-shadow: 0 0 0 3px rgba(59,130,214,.18);
}
.campo .ayuda { font-size: 12px; color: var(--j4-text-3); margin-top: 3px; }
.campo.error input, .campo.error select { border-color: var(--j4-danger); }
.campo .mensaje-error { font-size: 12.5px; color: var(--j4-danger); margin-top: 3px; }

/* ---------- Alertas / toasts ---------- */
.alerta {
  display: flex; gap: 10px; align-items: flex-start;
  padding: 12px 16px; border-radius: var(--j4-radius-sm);
  font-size: 14px; margin-bottom: 14px; border: 1px solid transparent;
}
.alerta-exito { background: var(--j4-success-bg); color: #14683C; border-color: #BFE8D2; }
.alerta-alerta { background: var(--j4-warning-bg); color: #8A5D14; border-color: #F2DCB3; }
.alerta-peligro { background: var(--j4-danger-bg); color: #A02E2E; border-color: #F2C6C6; }
.alerta-info { background: var(--j4-info-bg); color: #1B6FA0; border-color: #C2E3F5; }

.toasts { position: fixed; top: 74px; right: 18px; z-index: 200; display: flex; flex-direction: column; gap: 8px; max-width: 360px; }
.toast {
  background: var(--j4-navy-800); color: #fff; padding: 12px 16px;
  border-radius: var(--j4-radius-sm); box-shadow: var(--j4-shadow-lg);
  font-size: 13.5px; animation: entrar .25s ease;
}
.toast.exito { background: var(--j4-success); }
.toast.peligro { background: var(--j4-danger); }
.toast.alerta { background: var(--j4-warning); color: #4A3308; }
@keyframes entrar { from { opacity: 0; transform: translateY(-8px); } }

/* ---------- Modales ---------- */
.modal-fondo {
  position: fixed; inset: 0; background: rgba(10,31,56,.55);
  z-index: 100; display: none; align-items: flex-start; justify-content: center;
  padding: 6vh 16px; overflow-y: auto;
}
.modal-fondo.abierto { display: flex; }
.modal {
  background: #fff; border-radius: var(--j4-radius);
  width: 100%; max-width: 560px; box-shadow: var(--j4-shadow-lg);
  animation: entrar .2s ease;
}
.modal-header {
  padding: 16px 20px; border-bottom: 1px solid var(--j4-border);
  display: flex; justify-content: space-between; align-items: center;
}
.modal-header h3 { margin: 0; }
.modal-cerrar { background: none; border: none; font-size: 20px; color: var(--j4-text-3); cursor: pointer; }
.modal-body { padding: 20px; }
.modal-footer { padding: 14px 20px; border-top: 1px solid var(--j4-border); display: flex; justify-content: flex-end; gap: 10px; }

/* ---------- Utilidades ---------- */
.fila { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.mt-1 { margin-top: 8px; } .mt-2 { margin-top: 16px; } .mt-3 { margin-top: 24px; }
.mb-0 { margin-bottom: 0; }
.texto-2 { color: var(--j4-text-2); } .texto-3 { color: var(--j4-text-3); }
.texto-exito { color: var(--j4-success); } .texto-peligro { color: var(--j4-danger); }
.texto-sm { font-size: 12.5px; }
.derecha { text-align: right; }
.mono { font-family: 'Cascadia Code', 'Consolas', monospace; font-size: 12.5px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.progreso { height: 8px; background: #E9EDF3; border-radius: 6px; overflow: hidden; }
.progreso > div { height: 100%; background: var(--j4-blue); border-radius: 6px; }
.progreso.alerta > div { background: var(--j4-warning); }
.progreso.peligro > div { background: var(--j4-danger); }

/* ---------- Login ---------- */
.login-fondo {
  min-height: 100vh; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--j4-navy-900) 0%, var(--j4-navy-700) 60%, var(--j4-navy-600) 100%);
  padding: 20px;
}
.login-caja { width: 100%; max-width: 400px; }
.login-card { background: #fff; border-radius: 14px; padding: 34px 32px; box-shadow: var(--j4-shadow-lg); }
.login-logo { text-align: center; margin-bottom: 22px; }
.login-logo .cubo {
  width: 54px; height: 54px; border-radius: 14px; margin: 0 auto 10px;
  background: var(--j4-navy-700); color: #fff;
  display: grid; place-items: center; font-size: 22px; font-weight: 800;
}
.login-pie { text-align: center; color: #A9C0DA; font-size: 12.5px; margin-top: 18px; }

/* ---------- Responsive ---------- */
@media (max-width: 1100px) {
  .kpi-grid { grid-template-columns: repeat(2, 1fr); }
  .grid-2 { grid-template-columns: 1fr; }
}
@media (max-width: 900px) {
  .j4-sidebar { transform: translateX(-100%); box-shadow: none; }
  .j4-sidebar.abierta { transform: translateX(0); box-shadow: var(--j4-shadow-lg); }
  .j4-main { margin-left: 0; }
  .j4-topbar .hamburguesa { display: block; }
  .form-grid { grid-template-columns: 1fr; }
  .j4-contenido { padding: 14px; }
  .j4-topbar .empresa-actual { max-width: 150px; }
}
@media (max-width: 560px) {
  .kpi-grid { grid-template-columns: 1fr; }
  .card-body { padding: 14px; }
  body { font-size: 14px; }
  .j4-usuario .nombre-usuario { display: none; }
}

/* Overlay móvil al abrir sidebar */
.sidebar-overlay {
  display: none; position: fixed; inset: 0; z-index: 45; background: rgba(10,31,56,.4);
}
.sidebar-overlay.visible { display: block; }

/* Accesibilidad */
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); border: 0;
}