/* ============================================
   SISTEMA DE PREVENTA OFFLINE - ESTILOS PRINCIPALES
   ============================================ */

/* Variables CSS */
:root {
  /* Colores principales */
  --primary-color: #007bff;
  --primary-dark: #0056b3;
  --primary-light: #3395ff;
  --secondary-color: #6c757d;
  --success-color: #28a745;
  --danger-color: #dc3545;
  --warning-color: #ffc107;
  --info-color: #17a2b8;
  --light-color: #f8f9fa;
  --dark-color: #343a40;
  --white-color: #ffffff;
  
  /* Colores de estado */
  --online-color: #28a745;
  --offline-color: #dc3545;
  --syncing-color: #ffc107;
  --pending-color: #6c757d;
  
  /* Gradientes */
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-success: linear-gradient(135deg, #28a745 0%, #20c997 100%);
  --gradient-danger: linear-gradient(135deg, #dc3545 0%, #c82333 100%);
  --gradient-warning: linear-gradient(135deg, #ffc107 0%, #e0a800 100%);
  --gradient-info: linear-gradient(135deg, #17a2b8 0%, #138496 100%);
  
  /* Sombras */
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 8px rgba(0,0,0,0.15);
  --shadow-lg: 0 8px 16px rgba(0,0,0,0.2);
  --shadow-xl: 0 12px 24px rgba(0,0,0,0.25);
  
  /* Bordes */
  --border-radius-sm: 0.25rem;
  --border-radius-md: 0.5rem;
  --border-radius-lg: 0.75rem;
  --border-radius-xl: 1rem;
  
  /* Espaciado */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-xxl: 3rem;
  
  /* Tipografía */
  --font-family-sans: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  --font-family-mono: 'Courier New', Courier, monospace;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-md: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-xxl: 1.5rem;
  
  /* Transiciones */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

/* Reset y base */
*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  font-family: var(--font-family-sans);
  font-size: var(--font-size-md);
  line-height: 1.6;
  color: var(--dark-color);
  background-color: var(--light-color);
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Utilidades de texto */
.text-gradient-primary {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-gradient-success {
  background: var(--gradient-success);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-shadow {
  text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* Utilidades de fondo */
.bg-gradient-primary {
  background: var(--gradient-primary);
}

.bg-gradient-success {
  background: var(--gradient-success);
}

.bg-gradient-danger {
  background: var(--gradient-danger);
}

.bg-gradient-warning {
  background: var(--gradient-warning);
}

.bg-gradient-info {
  background: var(--gradient-info);
}

.bg-glass {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.bg-glass-dark {
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

/* Utilidades de sombra */
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }

.shadow-primary { box-shadow: 0 4px 15px rgba(0, 123, 255, 0.3); }
.shadow-success { box-shadow: 0 4px 15px rgba(40, 167, 69, 0.3); }
.shadow-danger { box-shadow: 0 4px 15px rgba(220, 53, 69, 0.3); }
.shadow-warning { box-shadow: 0 4px 15px rgba(255, 193, 7, 0.3); }

/* Botones mejorados */
.btn {
  font-weight: 600;
  border-radius: var(--border-radius-md);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  border: none;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.btn:hover {
  transform: translateY(-2px);
  text-decoration: none;
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow-primary);
}

.btn-primary:hover {
  box-shadow: 0 6px 20px rgba(0, 123, 255, 0.4);
  color: white;
}

.btn-success {
  background: var(--gradient-success);
  color: white;
  box-shadow: var(--shadow-success);
}

.btn-success:hover {
  box-shadow: 0 6px 20px rgba(40, 167, 69, 0.4);
  color: white;
}

.btn-danger {
  background: var(--gradient-danger);
  color: white;
  box-shadow: var(--shadow-danger);
}

.btn-danger:hover {
  box-shadow: 0 6px 20px rgba(220, 53, 69, 0.4);
  color: white;
}

.btn-warning {
  background: var(--gradient-warning);
  color: var(--dark-color);
  box-shadow: var(--shadow-warning);
}

.btn-warning:hover {
  box-shadow: 0 6px 20px rgba(255, 193, 7, 0.4);
  color: var(--dark-color);
}

.btn-glass {
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: white;
}

.btn-glass:hover {
  background: rgba(255, 255, 255, 0.3);
  color: white;
}

/* Botones con carga */
.btn-loading {
  pointer-events: none;
  position: relative;
}

.btn-loading::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  margin: auto;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: btn-loading-spin 1s linear infinite;
}

@keyframes btn-loading-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* Cards mejoradas */
.card {
  border-radius: var(--border-radius-xl);
  border: none;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  overflow: hidden;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.card-header {
  background: var(--gradient-primary);
  color: white;
  border-bottom: none;
  padding: var(--spacing-lg);
}

.card-body {
  padding: var(--spacing-lg);
}

.card-footer {
  background: transparent;
  border-top: 1px solid rgba(0,0,0,0.1);
  padding: var(--spacing-lg);
}

/* Cards especiales */
.card-glass {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.card-gradient-primary {
  background: var(--gradient-primary);
  color: white;
}

.card-gradient-primary .card-header {
  background: rgba(255, 255, 255, 0.2);
}

/* Formularios mejorados */
.form-control {
  border-radius: var(--border-radius-md);
  border: 2px solid #e9ecef;
  transition: all var(--transition-normal);
  font-size: var(--font-size-md);
  padding: 0.75rem 1rem;
}

.form-control:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

.form-control.is-invalid {
  border-color: var(--danger-color);
  box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25);
}

.form-control.is-valid {
  border-color: var(--success-color);
  box-shadow: 0 0 0 0.2rem rgba(40, 167, 69, 0.25);
}

/* Floating labels mejorados */
.form-floating > .form-control:focus ~ label,
.form-floating > .form-control:not(:placeholder-shown) ~ label {
  opacity: 0.65;
  transform: scale(0.85) translateY(-0.5rem) translateX(0.15rem);
  color: var(--primary-color);
}

/* Tablas mejoradas */
.table {
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.table thead th {
  background: var(--gradient-primary);
  color: white;
  border: none;
  font-weight: 600;
  text-transform: uppercase;
  font-size: var(--font-size-sm);
  letter-spacing: 0.5px;
}

.table tbody tr {
  transition: all var(--transition-fast);
}

.table tbody tr:hover {
  background: rgba(0, 123, 255, 0.05);
  transform: scale(1.02);
}

.table tbody td {
  vertical-align: middle;
  border-color: rgba(0,0,0,0.05);
}

/* Badges mejorados */
.badge {
  font-weight: 600;
  padding: 0.5rem 0.75rem;
  border-radius: var(--border-radius-xl);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-gradient-primary {
  background: var(--gradient-primary);
  color: white;
}

.badge-gradient-success {
  background: var(--gradient-success);
  color: white;
}

.badge-gradient-danger {
  background: var(--gradient-danger);
  color: white;
}

.badge-gradient-warning {
  background: var(--gradient-warning);
  color: var(--dark-color);
}

/* Estados de conexión */
.connection-status {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius-xl);
  font-size: var(--font-size-sm);
  font-weight: 600;
  transition: all var(--transition-normal);
}

.connection-status.online {
  background: rgba(40, 167, 69, 0.1);
  color: var(--success-color);
  border: 1px solid rgba(40, 167, 69, 0.3);
}

.connection-status.offline {
  background: rgba(220, 53, 69, 0.1);
  color: var(--danger-color);
  border: 1px solid rgba(220, 53, 69, 0.3);
}

.connection-status.syncing {
  background: rgba(255, 193, 7, 0.1);
  color: var(--warning-color);
  border: 1px solid rgba(255, 193, 7, 0.3);
}

/* Indicadores de carga */
.spinner {
  display: inline-block;
  width: 1rem;
  height: 1rem;
  border: 2px solid rgba(0,0,0,0.1);
  border-radius: 50%;
  border-top-color: currentColor;
  animation: spin 1s ease-in-out infinite;
}

.spinner-lg {
  width: 2rem;
  height: 2rem;
  border-width: 3px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Pulso para elementos importantes */
.pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

/* Shake para errores */
.shake {
  animation: shake 0.82s cubic-bezier(0.36, 0.07, 0.19, 0.97) both;
}

@keyframes shake {
  10%, 90% { transform: translate3d(-1px, 0, 0); }
  20%, 80% { transform: translate3d(2px, 0, 0); }
  30%, 50%, 70% { transform: translate3d(-4px, 0, 0); }
  40%, 60% { transform: translate3d(4px, 0, 0); }
}

/* Fade in para elementos dinámicos */
.fade-in {
  animation: fadeIn 0.5s ease-in-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Slide in para modales */
.slide-in {
  animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
  from { transform: translateX(100%); }
  to { transform: translateX(0); }
}

/* Progress bars mejoradas */
.progress {
  height: 0.75rem;
  border-radius: var(--border-radius-xl);
  background: rgba(0,0,0,0.1);
  overflow: hidden;
}

.progress-bar {
  border-radius: var(--border-radius-xl);
  transition: width var(--transition-normal);
}

.progress-bar-gradient-primary {
  background: var(--gradient-primary);
}

.progress-bar-gradient-success {
  background: var(--gradient-success);
}

.progress-bar-gradient-warning {
  background: var(--gradient-warning);
}

/* Toasts mejorados */
.toast {
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  border: none;
  overflow: hidden;
}

.toast-header {
  background: var(--gradient-primary);
  color: white;
  border-bottom: none;
}

.toast-body {
  padding: var(--spacing-lg);
}

/* Dropdowns mejorados */
.dropdown-menu {
  border-radius: var(--border-radius-lg);
  border: none;
  box-shadow: var(--shadow-lg);
  padding: var(--spacing-sm);
}

.dropdown-item {
  border-radius: var(--border-radius-md);
  transition: all var(--transition-fast);
  padding: 0.75rem 1rem;
  margin-bottom: 0.25rem;
}

.dropdown-item:hover {
  background: var(--gradient-primary);
  color: white;
  transform: translateX(5px);
}

/* Modales mejorados */
.modal-content {
  border-radius: var(--border-radius-xl);
  border: none;
  box-shadow: var(--shadow-xl);
  overflow: hidden;
}

.modal-header {
  background: var(--gradient-primary);
  color: white;
  border-bottom: none;
}

.modal-footer {
  background: var(--light-color);
  border-top: 1px solid rgba(0,0,0,0.1);
}

/* Alertas mejoradas */
.alert {
  border-radius: var(--border-radius-lg);
  border: none;
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.alert-primary {
  background: rgba(0, 123, 255, 0.1);
  color: var(--primary-dark);
  border-left: 4px solid var(--primary-color);
}

.alert-success {
  background: rgba(40, 167, 69, 0.1);
  color: #155724;
  border-left: 4px solid var(--success-color);
}

.alert-danger {
  background: rgba(220, 53, 69, 0.1);
  color: #721c24;
  border-left: 4px solid var(--danger-color);
}

.alert-warning {
  background: rgba(255, 193, 7, 0.1);
  color: #856404;
  border-left: 4px solid var(--warning-color);
}

.alert-info {
  background: rgba(23, 162, 184, 0.1);
  color: #0c5460;
  border-left: 4px solid var(--info-color);
}

/* Breadcrumbs mejorados */
.breadcrumb {
  background: transparent;
  padding: var(--spacing-md) 0;
  margin-bottom: var(--spacing-lg);
}

.breadcrumb-item + .breadcrumb-item::before {
  content: "›";
  font-size: 1.2rem;
  color: var(--secondary-color);
}

.breadcrumb-item a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.breadcrumb-item a:hover {
  color: var(--primary-dark);
}

/* Paginación mejorada */
.pagination .page-link {
  border-radius: var(--border-radius-md);
  border: 1px solid #dee2e6;
  margin: 0 0.25rem;
  color: var(--primary-color);
  transition: all var(--transition-fast);
}

.pagination .page-link:hover {
  background: var(--gradient-primary);
  color: white;
  border-color: var(--primary-color);
  transform: translateY(-2px);
}

.pagination .page-item.active .page-link {
  background: var(--gradient-primary);
  border-color: var(--primary-color);
  color: white;
}

/* Utilidades responsive */
.hide-mobile {
  display: block;
}

.show-mobile {
  display: none;
}

@media (max-width: 768px) {
  .hide-mobile {
    display: none;
  }
  
  .show-mobile {
    display: block;
  }
  
  .btn {
    padding: 0.75rem 1rem;
    font-size: var(--font-size-sm);
  }
  
  .card-body {
    padding: var(--spacing-md);
  }
  
  .table {
    font-size: var(--font-size-sm);
  }
  
  .modal-dialog {
    margin: 1rem;
  }
}

/* Utilidades de espaciado adicionales */
.p-xs { padding: var(--spacing-xs); }
.p-sm { padding: var(--spacing-sm); }
.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }
.p-xl { padding: var(--spacing-xl); }
.p-xxl { padding: var(--spacing-xxl); }

.m-xs { margin: var(--spacing-xs); }
.m-sm { margin: var(--spacing-sm); }
.m-md { margin: var(--spacing-md); }
.m-lg { margin: var(--spacing-lg); }
.m-xl { margin: var(--spacing-xl); }
.m-xxl { margin: var(--spacing-xxl); }

/* Dark mode support */
@media (prefers-color-scheme: dark) {
  :root {
    --light-color: #1a1a1a;
    --white-color: #2d2d2d;
    --dark-color: #ffffff;
  }
  
  body {
    background-color: #1a1a1a;
    color: #ffffff;
  }
  
  .card {
    background-color: #2d2d2d;
    color: #ffffff;
  }
  
  .form-control {
    background-color: #2d2d2d;
    border-color: #404040;
    color: #ffffff;
  }
  
  .form-control:focus {
    background-color: #2d2d2d;
    color: #ffffff;
  }
}

/* Print styles */
@media print {
  .no-print {
    display: none !important;
  }
  
  .card {
    box-shadow: none;
    border: 1px solid #dee2e6;
  }
  
  .btn {
    border: 1px solid currentColor;
  }
}

/* Accessibility improvements */
.sr-only-focusable:focus {
  position: static;
  width: auto;
  height: auto;
  padding: 0;
  margin: 0;
  overflow: visible;
  clip: auto;
  white-space: normal;
}

/* Focus styles */
.btn:focus,
.form-control:focus,
.form-select:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* High contrast mode */
@media (prefers-contrast: high) {
  .btn {
    border: 2px solid currentColor;
  }
  
  .card {
    border: 2px solid var(--dark-color);
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}