/* ============================================================================
   SI-REX: Sistema Integrado de Reportes de Expedientes (PIGREA - SUNAT)
   Estilos Institucionales Corporativos (Mobile-First, Accesible, Sin Bundler)
   ============================================================================ */

:root {
  --sunat-navy: #002B49;
  --sunat-navy-dark: #001B30;
  --sunat-blue: #0056B3;
  --sunat-blue-light: #EBF3FC;
  --sunat-accent: #0269B5;
  --sunat-red: #D32F2F;
  --sunat-red-light: #FEF2F2;
  --sunat-green: #059669;
  --sunat-green-light: #ECFDF5;
  --sunat-amber: #D97706;
  --sunat-amber-light: #FFFBEB;

  --bg-main: #F4F6F9;
  --card-bg: #FFFFFF;
  --text-main: #1E293B;
  --text-muted: #64748B;
  --border-color: #CBD5E1;
  --border-light: #E2E8F0;

  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ==================== ENCABEZADO INSTITUCIONAL ==================== */
.header-sunat {
  background: var(--sunat-navy);
  color: #FFFFFF;
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-top {
  padding: 10px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.header-container {
  max-width: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.brand-box {
  display: flex;
  align-items: center;
  gap: 12px;
}

.sunat-logo-badge {
  background: #D32F2F;
  color: #FFFFFF;
  font-weight: 900;
  letter-spacing: 1.5px;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  box-shadow: inset 0 -2px 0 rgba(0, 0, 0, 0.2);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-main {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.5px;
}

.brand-sub {
  font-size: 0.72rem;
  color: #94A3B8;
}

.header-divider {
  width: 1px;
  height: 32px;
  background: rgba(255, 255, 255, 0.2);
  display: none;
}

@media (min-width: 768px) {
  .header-divider {
    display: block;
  }
}

.module-box {
  display: flex;
  align-items: center;
  gap: 8px;
}

.module-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #FFFFFF;
}

.module-badge {
  background: rgba(255, 255, 255, 0.15);
  color: #E2E8F0;
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: 12px;
  font-weight: 600;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.user-box {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-left: auto;
}

.user-info {
  display: flex;
  flex-direction: column;
  text-align: right;
}

.user-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: #FFFFFF;
}

.user-role {
  font-size: 0.7rem;
  color: #93C5FD;
}

.user-actions {
  display: flex;
  gap: 6px;
}

.btn-icon {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #FFFFFF;
  border-radius: var(--radius-sm);
  padding: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.btn-icon:hover {
  background: rgba(255, 255, 255, 0.25);
}

/* ==================== LAYOUT DE BARRA LATERAL (SIDEBAR) ==================== */
.app-body-layout {
  display: flex !important;
  flex-direction: row !important;
  flex: 1;
  min-height: calc(100vh - 60px);
  position: relative;
  width: 100%;
}

.sidebar-sunat {
  width: 240px;
  min-width: 240px;
  max-width: 240px;
  background: var(--sunat-navy-dark);
  color: #FFFFFF;
  flex-shrink: 0;
  display: flex !important;
  flex-direction: column;
  border-right: 1px solid rgba(255, 255, 255, 0.08);
  padding: 18px 12px;
  position: sticky;
  top: 60px;
  height: calc(100vh - 60px);
  overflow-y: auto;
  z-index: 50;
}

.sidebar-header {
  padding: 0 8px 14px 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 12px;
}

.sidebar-section-title {
  font-size: 0.68rem;
  font-weight: 800;
  color: #94A3B8;
  letter-spacing: 1px;
}

.nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}

.nav-item {
  width: 100%;
}

.nav-item a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  color: #CBD5E1;
  text-decoration: none;
  font-size: 0.86rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: all 0.2s;
  background: transparent;
  border: 1px solid transparent;
}

.nav-item a:hover {
  color: #FFFFFF;
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.12);
}

.nav-item.active a {
  color: #FFFFFF;
  background: var(--sunat-blue);
  border-color: #38BDF8;
  box-shadow: 0 2px 6px rgba(0, 86, 179, 0.35);
}

.sidebar-footer {
  margin-top: auto;
  padding: 14px 8px 4px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.sidebar-status-box {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  color: #CBD5E1;
  font-weight: 600;
}

/* Área de contenido junto al sidebar */
.content-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  width: calc(100% - 240px);
  background: var(--bg-main);
}

/* Modo compacto para pantallas móviles muy pequeñas (menos de 640px) */
@media (max-width: 640px) {
  .sidebar-sunat {
    width: 68px;
    min-width: 68px;
    max-width: 68px;
    padding: 14px 6px;
  }

  .sidebar-header,
  .sidebar-footer,
  .nav-item a span:last-child {
    display: none;
  }

  .nav-item a {
    justify-content: center;
    padding: 12px 0;
  }

  .nav-item a span:first-child {
    font-size: 1.3rem !important;
  }

  .content-wrapper {
    width: calc(100% - 68px);
  }
}

/* ==================== CONTENEDOR PRINCIPAL ==================== */
.main-container {
  flex: 1;
  max-width: 1300px;
  width: 100%;
  margin: 0 auto;
  padding: 24px 16px 48px;
}

/* Encabezado de Vista */
.view-header {
  margin-bottom: 24px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 16px;
}

.view-header h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--sunat-navy);
}

.view-header p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 2px;
}

/* Tarjetas y Contenedores */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 24px;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--sunat-navy);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Formularios */
.form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 640px) {
  .form-grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }
  .form-grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
  .form-grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 14px;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  background-color: #FFFFFF;
  color: var(--text-main);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--sunat-blue);
  box-shadow: 0 0 0 3px rgba(0, 86, 179, 0.15);
}

.form-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Botones */
.btn-primary {
  background-color: var(--sunat-navy);
  color: #FFFFFF;
  font-weight: 600;
  border: none;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.9rem;
  transition: background-color 0.2s, transform 0.1s;
}

.btn-primary:hover {
  background-color: #003B66;
}

.btn-primary:active {
  transform: translateY(1px);
}

.btn-secondary {
  background-color: #F1F5F9;
  color: var(--text-main);
  border: 1px solid var(--border-color);
  font-weight: 600;
  padding: 9px 16px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  transition: background-color 0.2s;
}

.btn-secondary:hover {
  background-color: #E2E8F0;
}

.btn-sm {
  padding: 5px 10px;
  font-size: 0.8rem;
}

.btn-danger {
  background-color: var(--sunat-red);
  color: #FFFFFF;
  border: none;
}

.btn-danger:hover {
  background-color: #B91C1C;
}

.btn-success {
  background-color: var(--sunat-green);
  color: #FFFFFF;
  border: none;
}

.btn-success:hover {
  background-color: #047857;
}

/* Tablas de Datos */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: #FFFFFF;
}

.table-sunat {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  text-align: left;
}

.table-sunat th {
  background: #F8FAFC;
  color: var(--sunat-navy);
  font-weight: 700;
  padding: 10px 14px;
  border-bottom: 2px solid var(--border-color);
  white-space: nowrap;
}

.table-sunat td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-light);
  vertical-align: middle;
}

.table-sunat tbody tr:hover {
  background-color: #F1F5F9;
}

/* Badges de Estado */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  border-radius: 12px;
  font-size: 0.74rem;
  font-weight: 600;
  white-space: nowrap;
}

.badge-correcto, .badge-exito {
  background-color: var(--sunat-green-light);
  color: #065F46;
  border: 1px solid #A7F3D0;
}

.badge-observado {
  background-color: var(--sunat-amber-light);
  color: #92400E;
  border: 1px solid #FDE68A;
}

.badge-error, .badge-no_generado {
  background-color: var(--sunat-red-light);
  color: #991B1B;
  border: 1px solid #FECACA;
}

.badge-info {
  background-color: var(--sunat-blue-light);
  color: #1E40AF;
  border: 1px solid #BFDBFE;
}

/* KPIs y Métricas */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.kpi-card {
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  border-left: 4px solid var(--sunat-navy);
  box-shadow: var(--shadow-sm);
}

.kpi-title {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
}

.kpi-value {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--sunat-navy);
  margin-top: 4px;
}

.kpi-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 2px;
}

/* Pasos del Resolutor (Flujo 4 Pasos) */
.steps-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

.step-card {
  background: #FFFFFF;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 14px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.step-card.active {
  border-color: var(--sunat-blue);
  background: var(--sunat-blue-light);
}

.step-number {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--sunat-navy);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  flex-shrink: 0;
}

.step-text {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-main);
}

/* Barra de Progreso */
.progress-bar-container {
  width: 100%;
  height: 10px;
  background-color: #E2E8F0;
  border-radius: 5px;
  overflow: hidden;
  margin: 12px 0;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--sunat-blue), #0284C7);
  transition: width 0.4s ease;
}

/* Modales */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(2px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  z-index: 1000;
}

.modal-card {
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  max-width: 520px;
  width: 100%;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  animation: modalIn 0.2s ease-out;
}

@keyframes modalIn {
  from { opacity: 0; transform: scale(0.96); }
  to { opacity: 1; transform: scale(1); }
}

.modal-header {
  background: var(--sunat-navy);
  color: #FFFFFF;
  padding: 14px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-header h3 {
  font-size: 1.1rem;
  font-weight: 700;
}

.modal-close {
  background: transparent;
  border: none;
  color: #FFFFFF;
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
}

.modal-body {
  padding: 20px;
}

.modal-alert-warning {
  background: var(--sunat-amber-light);
  border: 1px solid #FDE68A;
  color: #92400E;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  margin-bottom: 16px;
}

/* Toasts */
.toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 2000;
}

.toast {
  min-width: 280px;
  max-width: 380px;
  padding: 12px 16px;
  background: #FFFFFF;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border-left: 4px solid var(--sunat-navy);
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  animation: toastIn 0.3s ease;
}

@keyframes toastIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

.toast-exito { border-left-color: var(--sunat-green); }
.toast-error { border-left-color: var(--sunat-red); }
.toast-advertencia { border-left-color: var(--sunat-amber); }

/* Pie de Página */
.footer-sunat {
  background: #FFFFFF;
  border-top: 1px solid var(--border-color);
  padding: 16px 20px;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: auto;
}

.footer-container {
  max-width: 1300px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.status-indicator {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--sunat-green);
  box-shadow: 0 0 0 2px rgba(5, 150, 105, 0.2);
}

/* ==================== PESTAÑAS Y NAVEGACIÓN DE SUBMÓDULOS ==================== */
.tab-nav-container {
  display: flex;
  gap: 8px;
  border-bottom: 2px solid var(--border-color);
  margin-bottom: 20px;
}

.tab-btn {
  background: none;
  border: none;
  padding: 10px 18px;
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--text-muted);
  cursor: pointer;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s ease;
}

.tab-btn:hover {
  color: var(--sunat-navy);
  background-color: #F8FAFC;
}

.tab-btn.active {
  color: var(--sunat-navy);
  border-bottom-color: var(--sunat-red);
  font-weight: 700;
}

.tab-badge {
  background: #E2E8F0;
  color: #334155;
  font-size: 0.72rem;
  padding: 2px 7px;
  border-radius: 10px;
  font-weight: 700;
}

.tab-btn.active .tab-badge {
  background: var(--sunat-navy);
  color: #FFFFFF;
}