/* STOCK INTERCESPED - Estilos Principales */

:root {
  /* Colores principales */
  --primary-color: #1b7332;
  --primary-dark: #0f5132;
  --primary-light: #28a745;
  
  /* Escala de grises */
  --gray-50: #f8f9fa;
  --gray-100: #e9ecef;
  --gray-200: #dee2e6;
  --gray-300: #ced4da;
  --gray-400: #6c757d;
  --gray-500: #495057;
  --gray-600: #343a40;
  --gray-700: #212529;
  
  /* Colores semánticos */
  --success-color: var(--primary-color);
  --error-color: #dc3545;
  --warning-color: #ffc107;
  --info-color: #17a2b8;
  
  /* Backgrounds y bordes */
  --bg-primary: #ffffff;
  --bg-secondary: var(--gray-50);
  --bg-accent: var(--gray-100);
  --border-color: var(--gray-200);
  --border-radius: 8px;
  --border-radius-sm: 4px;
  
  /* Texto */
  --text-primary: var(--gray-700);
  --text-secondary: var(--gray-600);
  --text-light: var(--gray-500);
  
  /* Sombras */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 24px rgba(0, 0, 0, 0.1);
  
  /* Espaciado */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  
  /* Transiciones */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  
  /* Z-index */
  --z-navbar: 100;
  --z-modal: 1000;
  --z-toast: 1100;
}

/* Tema claro forzado - sin modo oscuro */

/* Reset y base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  overflow-x: hidden;
  /* Forzar tema claro siempre */
  color-scheme: light;
}

/* Utilidades de accesibilidad */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Estilos para diálogos de confirmación */
.confirmation-dialog-content {
  padding: 10px;
  max-width: 100%;
  overflow-wrap: break-word;
  word-break: break-word;
  line-height: 1.6;
  white-space: normal;
}

.confirmation-dialog-content strong {
  display: inline-block;
  min-width: 100px;
  font-weight: 600;
  margin-right: 5px;
  color: var(--text-primary);
}

.confirmation-dialog-content em {
  display: block;
  margin-top: 15px;
  color: var(--text-secondary);
  font-style: italic;
  border-left: 3px solid var(--warning-color);
  padding-left: 10px;
  background-color: rgba(255, 193, 7, 0.1);
  padding: 8px 12px;
  border-radius: var(--border-radius-sm);
}

sl-dialog::part(body) {
  padding: var(--spacing-md);
}

sl-dialog::part(header) {
  color: var(--text-primary) !important;
  font-weight: 600;
  font-size: 1.1rem;
  padding: var(--spacing-md) var(--spacing-md) 0 var(--spacing-md);
  border-bottom: none;
}

sl-dialog::part(base) {
  --sl-panel-background-color: var(--bg-primary);
  --sl-panel-border-color: var(--border-color);
}

sl-dialog::part(close-button) {
  color: var(--text-secondary);
}

sl-dialog::part(close-button):hover {
  color: var(--text-primary);
}

sl-dialog::part(footer) {
  padding: var(--spacing-md);
  border-top: 1px solid var(--border-color);
}

/* Estilos para el modal de detalles de lote */
.lote-details-modal {
  --width: 800px;
  --body-spacing: var(--spacing-lg);
}

.lote-header {
  background-color: var(--bg-secondary);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing-md);
}

.lote-header .form-group {
  margin-bottom: var(--spacing-sm);
}

.lote-header label {
  font-weight: 600;
  color: var(--text-secondary);
  display: inline-block;
  min-width: 100px;
  margin-right: var(--spacing-sm);
}

.lote-header span {
  color: var(--text-primary);
  font-weight: 500;
}

.lote-summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-color);
}

.summary-item {
  text-align: center;
  padding: var(--spacing-sm);
  background-color: var(--bg-primary);
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--border-color);
}

.summary-item strong {
  display: block;
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: var(--spacing-xs);
}

.summary-item span {
  color: var(--primary-color);
  font-weight: 600;
  font-size: 1.1rem;
}

.lote-movements {
  margin-top: var(--spacing-lg);
}

.lote-movements h4 {
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
  font-size: 1.1rem;
}

.lote-movements .table-container {
  max-height: 300px;
  overflow-y: auto;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
}

/* Estilo para botón de editar */
.action-btn.edit {
  background-color: #ffc107;
  color: #212529;
}

.action-btn.edit:hover {
  background-color: #e0a800;
  transform: scale(1.1);
}

/* Estilos para Análisis por Periodo */
.period-analysis {
  background: var(--bg-primary);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  margin-top: var(--spacing-lg);
  border: 1px solid var(--border-color);
}

.period-analysis h3 {
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
  font-size: 1.2rem;
}

.period-controls {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  align-items: end;
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-md);
  background: var(--bg-secondary);
  border-radius: var(--border-radius-sm);
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.control-group label {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.period-results {
  margin-top: var(--spacing-md);
}

.results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid var(--border-color);
}

.results-header h4 {
  margin: 0;
  color: var(--text-primary);
  font-size: 1.1rem;
}

.results-summary {
  display: flex;
  gap: var(--spacing-sm);
}

.summary-badge {
  background: var(--primary-color);
  color: white;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
}

.results-content {
  max-height: 400px;
  overflow-y: auto;
}

/* Responsive para controles de periodo */
@media (max-width: 768px) {
  .period-controls {
    flex-direction: column;
    align-items: stretch;
  }
  
  .control-group {
    width: 100%;
  }
  
  .results-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm);
  }
  
  .results-summary {
    flex-wrap: wrap;
  }
}

/* Colores para valores positivos y negativos */
.positive {
  color: #28a745;
}

.negative {
  color: #dc3545;
}

.hidden {
  display: none !important;
}

/* Loading Screen */
.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--bg-primary);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border-color);
  border-top: 3px solid var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: var(--spacing-md);
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Authentication Screen */
.auth-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--primary-color);
  background-image: url('../assets/branding/fondo.jpg');
  background-position: center center;
  background-size: cover;
  background-repeat: no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
}

.auth-screen::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1;
}

.auth-container {
  background: var(--bg-primary);
  padding: var(--spacing-2xl);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 400px;
  margin: var(--spacing-md);
  position: relative;
  z-index: 2;
}

.auth-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.auth-logo {
  max-height: 60px;
  margin-bottom: var(--spacing-md);
}

.auth-header h1 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.auth-header p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.auth-tabs {
  display: flex;
  margin-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
}

.auth-tab {
  flex: 1;
  background: none;
  border: none;
  padding: var(--spacing-md);
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--text-secondary);
  border-bottom: 2px solid transparent;
  transition: var(--transition-fast);
}

.auth-tab.active {
  color: var(--primary-color);
  border-bottom-color: var(--primary-color);
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.auth-form .form-group {
  position: relative;
}

.auth-form .password-toggle {
  position: absolute;
  right: var(--spacing-sm);
  bottom: var(--spacing-xs);
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: var(--spacing-xs);
  font-size: 1.2rem;
  line-height: 1;
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  height: 32px;
  width: 32px;
  border-radius: var(--border-radius-sm);
}

.auth-form .password-toggle:hover {
  color: var(--text-primary);
  background: var(--bg-accent);
}

.auth-form .form-group.has-toggle input {
  padding-right: 40px;
}

.auth-form button[type="submit"] {
  margin-top: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: 1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.auth-form button[type="submit"]:hover:not(:disabled) {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.auth-form button[type="submit"]:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.auth-form button[type="submit"]:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.auth-error {
  color: var(--error-color);
  font-size: 0.8rem;
  text-align: center;
  margin-top: var(--spacing-md);
  min-height: 1.2rem;
}

/* Navegación */
.navbar {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: var(--z-navbar);
  box-shadow: var(--shadow-sm);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.nav-brand {
  display: flex;
  align-items: center;
}

.nav-logo {
  max-height: 40px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
}

.nav-toggle span {
  width: 20px;
  height: 2px;
  background: var(--text-primary);
  margin: 2px 0;
  transition: var(--transition-fast);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.nav-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  text-decoration: none;
  color: var(--text-secondary);
  border-radius: var(--border-radius-sm);
  transition: var(--transition-fast);
  font-size: 0.75rem;
  min-width: 65px;
  text-align: center;
  white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary-color);
  background: var(--bg-accent);
}

.nav-icon {
  font-size: 1.2rem;
  line-height: 1;
}

.nav-user {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-left: var(--spacing-lg);
  padding-left: var(--spacing-lg);
  border-left: 1px solid var(--border-color);
}

.user-email {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.logout-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: var(--spacing-xs);
  border-radius: var(--border-radius-sm);
  transition: var(--transition-fast);
}

.logout-btn:hover {
  color: var(--error-color);
  background: var(--bg-accent);
}

/* Responsive Navigation */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }
  
  .nav-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    padding: var(--spacing-md);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    gap: var(--spacing-md);
  }
  
  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-link {
    min-width: 70px;
    font-size: 0.7rem;
  }
  
  .nav-icon {
    font-size: 1.1rem;
  }
  
  .nav-user {
    margin-left: 0;
    padding-left: 0;
    border-left: none;
    border-top: 1px solid var(--border-color);
    padding-top: var(--spacing-md);
    width: 100%;
    justify-content: space-between;
  }
}

/* Contenido principal */
.app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.main-content {
  flex: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-md);
  width: 100%;
}

.content-section {
  display: none;
}

.content-section.active {
  display: block;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.section-header h1 {
  font-size: 1.75rem;
  font-weight: 600;
  background: var(--primary-color);
  color: white;
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--border-radius);
  margin: 0;
  display: inline-block;
  letter-spacing: 0.5px;
  box-shadow: var(--shadow-sm);
}

.section-actions {
  display: flex;
  gap: var(--spacing-sm);
}

/* Botones */
.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  border: none;
  border-radius: var(--border-radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
}

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

.btn-primary:hover:not(:disabled) {
  background: var(--primary-dark);
}

.btn-secondary {
  background: var(--bg-accent);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--border-color);
}

.btn-primary:disabled,
.btn-secondary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* KPI Cards */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.kpi-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-fast);
}

.kpi-card:hover {
  box-shadow: var(--shadow-md);
}

.kpi-icon {
  font-size: 2rem;
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-accent);
  border-radius: 50%;
}

.kpi-content h3 {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xs);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.kpi-value {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* Charts */
.charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.chart-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
}

.chart-card h3 {
  font-size: 1.1rem;
  font-weight: 500;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

/* Filtros */
.filters-container {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.filters-row {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  flex-wrap: wrap;
}

.filters-row:last-child {
  margin-bottom: 0;
}

.search-input,
.filter-select,
.date-input {
  flex: 1;
  min-width: 200px;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.9rem;
}

.search-input:focus,
.filter-select:focus,
.date-input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(40, 167, 69, 0.2);
}

/* Tablas */
.table-container {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th {
  background: var(--primary-color);
  color: white;
  font-weight: 500;
  text-align: left;
  padding: var(--spacing-md);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 2px solid var(--primary-dark);
}

.data-table td {
  padding: var(--spacing-sm) var(--spacing-md);
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
  font-size: 0.85rem;
}

.data-table tr:hover {
  background: var(--bg-accent);
}

.data-table tr:last-child td {
  border-bottom: none;
}

/* Formularios */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
  color: var(--text-primary);
  font-size: 0.9rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.9rem;
  font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(40, 167, 69, 0.2);
}

.form-row {
  display: flex;
  gap: var(--spacing-md);
}

.form-row .form-group {
  flex: 1;
}

/* Modales */
.modal-form {
  padding: var(--spacing-md) 0;
}

/* Exportes */
/* Sección intro de exportaciones */
.section-intro {
  margin-bottom: var(--spacing-xl);
}

.intro-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-sm);
}

.intro-card h2 {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

.intro-card > p {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
  line-height: 1.6;
}

.intro-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--bg-secondary);
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--border-color);
}

.feature-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
  margin-top: var(--spacing-xs);
}

.feature-content h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.feature-content p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.4;
  margin: 0;
}

.intro-tips {
  background: var(--bg-accent);
  border-radius: var(--border-radius-sm);
  padding: var(--spacing-lg);
  border: 1px solid var(--border-color);
}

.intro-tips h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

.intro-tips ul {
  margin: 0;
  padding-left: var(--spacing-md);
}

.intro-tips li {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: var(--spacing-sm);
}

.intro-tips li:last-child {
  margin-bottom: 0;
}

.export-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-md);
}

.export-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-fast);
}

.export-card:hover {
  box-shadow: var(--shadow-md);
}

.export-card h3 {
  font-size: 1.1rem;
  font-weight: 500;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.export-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: var(--spacing-md);
  line-height: 1.4;
}

.export-details {
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-md);
  background: var(--bg-secondary);
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--border-color);
}

.export-details h4 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: var(--spacing-md) 0 var(--spacing-sm) 0;
}

.export-details h4:first-child {
  margin-top: 0;
}

.export-details ul {
  margin: var(--spacing-sm) 0;
  padding-left: var(--spacing-md);
}

.export-details li {
  color: var(--text-secondary);
  font-size: 0.85rem;
  line-height: 1.4;
  margin-bottom: var(--spacing-xs);
}

.export-details p {
  color: var(--text-secondary);
  font-size: 0.85rem;
  line-height: 1.4;
  margin-bottom: var(--spacing-sm);
}

.export-details p:last-child {
  margin-bottom: 0;
}

.export-details strong {
  color: var(--text-primary);
  font-weight: 600;
}

.export-actions {
  display: flex;
  gap: var(--spacing-sm);
}

/* Movimientos recientes */
.recent-movements {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
}

.recent-movements h3 {
  font-size: 1.1rem;
  font-weight: 500;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.movements-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.movement-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--bg-accent);
  border-radius: var(--border-radius-sm);
  font-size: 0.9rem;
  transition: var(--transition-fast);
}

.movement-item:hover {
  background: var(--bg-secondary);
}

.movement-date-section {
  flex-shrink: 0;
  min-width: 90px;
}

.movement-date {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--bg-primary);
  padding: 4px 8px;
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--border-color);
}

.movement-info-section {
  flex: 1;
  min-width: 0;
}

.movement-type-info {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.model-code {
  font-size: 0.9rem;
  color: var(--primary-color);
}

.movement-values-section {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 2px;
  flex-shrink: 0;
  min-width: 100px;
}

.movement-units {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-primary);
}

.movement-amount {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--primary-color);
}

.movement-type {
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius-sm);
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
}

.movement-type.entrada {
  background: rgba(40, 167, 69, 0.1);
  color: var(--primary-color);
}

.movement-type.salida {
  background: rgba(220, 53, 69, 0.1);
  color: var(--error-color);
}

/* Estados */
.status-badge {
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius-sm);
  font-size: 0.8rem;
  font-weight: 500;
}

.status-active {
  background: rgba(40, 167, 69, 0.1);
  color: var(--primary-color);
}

.status-inactive {
  background: rgba(108, 117, 125, 0.1);
  color: var(--text-secondary);
}

/* Mensajes */
.warning-message {
  background: rgba(255, 193, 7, 0.1);
  color: var(--warning-color);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-sm);
  border-left: 3px solid var(--warning-color);
  font-size: 0.9rem;
}

/* Acciones de tabla */
.table-actions {
  display: flex;
  gap: 2px;
  flex-wrap: nowrap;
  justify-content: center;
  align-items: center;
  min-width: 100px;
}

.action-btn {
  background: none;
  border: none;
  padding: 4px 6px;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  color: var(--text-secondary);
  transition: var(--transition-fast);
  font-size: 0.9rem;
  min-width: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.action-btn:hover {
  background: var(--bg-accent);
}

.action-btn.edit:hover {
  color: var(--info-color);
}

.action-btn.duplicate:hover {
  color: var(--warning-color);
}

.action-btn.delete:hover {
  color: var(--error-color);
}

/* Columna de acciones optimizada */
.data-table th:last-child,
.data-table td:last-child {
  width: 120px;
  min-width: 120px;
  text-align: center;
}

/* Pestañas por año */
.year-tabs-container {
  margin: var(--spacing-md) 0;
}

.year-tabs {
  display: flex;
  gap: var(--spacing-xs);
  flex-wrap: wrap;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: var(--spacing-xs);
}

.year-tab {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-bottom: none;
  border-radius: var(--border-radius-sm) var(--border-radius-sm) 0 0;
  padding: var(--spacing-sm) var(--spacing-md);
  cursor: pointer;
  color: var(--text-secondary);
  font-weight: 500;
  transition: var(--transition-fast);
  position: relative;
  user-select: none;
}

.year-tab:hover {
  background: var(--bg-accent);
  color: var(--text-primary);
}

.year-tab.active {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
  margin-bottom: -2px;
  border-bottom: 2px solid var(--primary-color);
}

.year-tab .count {
  background: rgba(255, 255, 255, 0.2);
  padding: 2px 6px;
  border-radius: 10px;
  font-size: 0.75rem;
  margin-left: var(--spacing-xs);
}

.year-tab.active .count {
  background: rgba(255, 255, 255, 0.3);
}

/* Responsive */
@media (max-width: 768px) {
  .main-content {
    padding: var(--spacing-md);
  }
  
  .section-header {
    flex-direction: column;
    align-items: stretch;
  }
  
  .kpi-grid {
    grid-template-columns: 1fr;
  }
  
  .charts-grid {
    grid-template-columns: 1fr;
  }
  
  .filters-row {
    flex-direction: column;
  }
  
  .form-row {
    flex-direction: column;
  }
  
  .export-grid {
    grid-template-columns: 1fr;
  }
  
  .table-container {
    overflow-x: auto;
  }
  
  .data-table {
    min-width: 600px;
  }
  
  .export-actions {
    flex-direction: column;
  }
  
  .table-actions {
    flex-direction: row;
    gap: 1px;
  }
  
  .action-btn {
    font-size: 0.8rem;
    min-width: 24px;
    padding: 2px 4px;
  }
  
  .year-tabs {
    gap: 2px;
  }
  
  .year-tab {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.85rem;
  }
}

@media (max-width: 600px) {
  .data-table th:last-child,
  .data-table td:last-child {
    width: 90px;
    min-width: 90px;
  }
  
  .data-table td {
    font-size: 0.8rem;
    padding: var(--spacing-xs) var(--spacing-sm);
  }
}

@media (max-width: 480px) {
  .nav-container {
    padding: 0 var(--spacing-sm);
  }
  
  .main-content {
    padding: var(--spacing-sm);
  }
  
  .kpi-card {
    padding: var(--spacing-md);
  }
  
  .chart-card {
    padding: var(--spacing-md);
  }
  
  .filters-container {
    padding: var(--spacing-md);
  }
}

/* Animaciones */
@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.content-section.active {
  animation: slideIn 0.3s ease;
}

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

/* Focus visible para navegación por teclado */
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
a:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* ========================================
   STOCK ACTUAL (STOCK LEDGER)
   ======================================== */

/* Filtros de Stock */
.stock-filters {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  display: flex;
  gap: var(--spacing-lg);
  align-items: end;
  flex-wrap: wrap;
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  min-width: 200px;
}

.filter-group label {
  font-weight: 500;
  color: var(--text-primary);
  font-size: 0.9rem;
}

.search-input,
.filter-select {
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  font-size: 0.9rem;
  background: var(--bg-primary);
  color: var(--text-primary);
  transition: border-color 0.3s ease;
}

.search-input:focus,
.filter-select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(27, 115, 50, 0.1);
}

.search-input::placeholder {
  color: var(--text-secondary);
}

.btn-clear {
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-accent);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  color: var(--text-primary);
  cursor: pointer;
  font-size: 0.9rem;
  transition: all 0.3s ease;
  height: fit-content;
}

.btn-clear:hover {
  background: var(--border-color);
  transform: translateY(-1px);
}

.stock-ledger-container {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

/* Pestañas */
.tabs-container {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: var(--spacing-md);
}

.ledger-tabs {
  display: flex;
  gap: var(--spacing-xs);
  overflow-x: auto;
  padding-bottom: var(--spacing-xs);
}

.tab-btn {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  padding: var(--spacing-md);
  cursor: pointer;
  transition: var(--transition-fast);
  white-space: nowrap;
  min-width: 180px;
}

.tab-btn:hover {
  background: var(--bg-accent);
  border-color: var(--primary-color);
}

.tab-btn.active {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

.tab-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--spacing-xs);
}

.tab-code {
  font-weight: 600;
  font-size: 0.9rem;
}

.tab-description {
  font-size: 0.8rem;
  opacity: 0.8;
  max-width: 150px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tab-btn.active .tab-description {
  opacity: 0.9;
}

.no-models {
  text-align: center;
  color: var(--text-secondary);
  font-style: italic;
  padding: var(--spacing-lg);
}

/* Contenido del stock actual */
.ledger-content {
  padding: var(--spacing-lg);
}

.ledger-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-xl);
  padding: var(--spacing-lg);
  background: var(--bg-secondary);
  border-radius: var(--border-radius);
  gap: var(--spacing-lg);
}

.model-info h3 {
  margin: 0 0 var(--spacing-sm) 0;
  color: var(--text-primary);
  font-size: 1.3rem;
}

.provider-info,
.cost-info {
  margin: var(--spacing-xs) 0;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.current-stock {
  display: flex;
  gap: var(--spacing-md);
  justify-content: space-between;
  align-items: stretch;
}

.stock-card,
.value-card,
.entry-card,
.exit-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--spacing-md);
  background: var(--bg-primary);
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
  flex: 1;
  min-width: 160px;
  text-align: center;
}

.stock-label,
.value-label,
.entry-label,
.exit-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xs);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.stock-value,
.value-amount,
.entry-value,
.exit-value {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--primary-color);
}

.entry-amount,
.exit-amount {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-top: var(--spacing-xs);
}

.stock-value.negative,
.value-amount.negative {
  color: var(--error-color);
}

/* Colores específicos para entradas y salidas */
.entry-card {
  border-left: 4px solid #28a745;
}

.entry-value {
  color: #28a745;
}

.exit-card {
  border-left: 4px solid #dc3545;
}

.exit-value {
  color: #dc3545;
}

/* Filtros de movimientos por modelo */
.ledger-filters {
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-md);
  background: var(--bg-secondary);
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
}

.filter-row {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.ledger-filters .filter-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  min-width: 140px;
}

.ledger-filters .filter-group label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.ledger-filters input[type="date"] {
  padding: var(--spacing-sm);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  font-size: 0.9rem;
  background: var(--bg-primary);
  color: var(--text-primary);
  transition: border-color var(--transition-fast);
}

.ledger-filters input[type="date"]:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(27, 115, 50, 0.1);
}

.filter-actions {
  display: flex;
  align-items: flex-end;
}

.export-actions {
  display: flex;
  align-items: flex-end;
  gap: var(--spacing-sm);
  margin-left: auto;
}

.btn-export {
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.btn-export:hover {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.btn-export.excel:hover {
  background: #217346;
  border-color: #217346;
}

.btn-export.pdf:hover {
  background: #dc3545;
  border-color: #dc3545;
}

.btn-clear {
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--warning-color);
  border-radius: var(--border-radius-sm);
  background: rgba(255, 193, 7, 0.1);
  color: var(--text-primary);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-clear:hover {
  background: var(--warning-color);
  color: var(--gray-700);
}

/* Estilos para referencia de factura */
.factura-ref {
  display: block;
  font-size: 0.75rem;
  color: var(--text-light);
  margin-top: var(--spacing-xs);
  font-style: italic;
  opacity: 0.8;
  line-height: 1.2;
}

.factura-ref:hover {
  opacity: 1;
  color: var(--primary-color);
}

/* Tabla del stock actual */
.ledger-table-container {
  overflow-x: auto;
  margin-bottom: var(--spacing-lg);
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
}

.ledger-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-primary);
}

.ledger-table th {
  background: var(--primary-color);
  color: white;
  padding: var(--spacing-md);
  text-align: left;
  font-weight: 500;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 2px solid var(--primary-dark);
}

.ledger-table th.amount-col,
.ledger-table th.currency-col {
  text-align: right;
}

.ledger-table td {
  padding: var(--spacing-sm) var(--spacing-md);
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
  font-size: 0.9rem;
  font-weight: 600;
}

.ledger-table .amount-col,
.ledger-table .currency-col {
  text-align: right;
  font-family: 'Courier New', monospace;
  font-size: 0.85rem;
  font-weight: 700;
}

.ledger-row:hover {
  background: var(--bg-accent);
}

.ledger-row.entrada {
  border-left: 3px solid var(--success-color);
}

.ledger-row.salida {
  border-left: 3px solid var(--error-color);
}

.movement-type {
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius-sm);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.movement-type.entrada {
  background: rgba(40, 167, 69, 0.1);
  color: var(--success-color);
}

.movement-type.salida {
  background: rgba(220, 53, 69, 0.1);
  color: var(--error-color);
}

.observations {
  display: block;
  margin-top: var(--spacing-xs);
  color: var(--text-secondary);
  font-style: italic;
  font-weight: 500;
}

.amount-col.entrada {
  color: var(--success-color);
  font-weight: 700;
}

/* Saldo (m²) más grande */
.amount-col.balance {
  font-size: 1rem;
  font-weight: 800;
  color: var(--primary-color);
}

.amount-col.balance.negative {
  color: var(--error-color);
}

/* Saldo (€) también más grande */
.currency-col.balance {
  font-size: 1rem;
  font-weight: 800;
  color: var(--primary-color);
}

.currency-col.balance.negative {
  color: var(--error-color);
}

/* Fecha más destacada */
.ledger-table td:first-child {
  font-weight: 700;
  color: var(--text-primary);
}

.amount-col.salida {
  color: var(--error-color);
  font-weight: 500;
}

.balance.negative {
  color: var(--error-color);
  font-weight: 600;
}

.no-movements {
  text-align: center;
  color: var(--text-secondary);
  font-style: italic;
  padding: var(--spacing-xl);
}

/* Resumen del stock actual */
.ledger-summary {
  background: var(--bg-secondary);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  border: 1px solid var(--border-color);
}

.summary-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
}

.stat-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-primary);
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--border-color);
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.stat-value {
  font-size: 0.9rem;
  color: var(--text-primary);
  font-weight: 600;
  font-family: 'Courier New', monospace;
}

/* Responsive */
/* Tablets */
@media (max-width: 1024px) {
  .current-stock {
    flex-wrap: wrap;
  }
  
  .stock-card,
  .value-card,
  .entry-card,
  .exit-card {
    min-width: calc(50% - var(--spacing-md) / 2);
    flex: none;
  }
}

@media (max-width: 768px) {
  .ledger-header {
    flex-direction: column;
    align-items: stretch;
  }
  
  .current-stock {
    justify-content: space-around;
  }
  
  .ledger-tabs {
    flex-direction: column;
  }
  
  .tab-btn {
    min-width: auto;
  }
  
  .summary-stats {
    grid-template-columns: 1fr;
  }
  
  .ledger-table {
    font-size: 0.8rem;
  }
  
  .ledger-table th,
  .ledger-table td {
    padding: var(--spacing-xs) var(--spacing-sm);
  }
}

@media (max-width: 480px) {
  .ledger-content {
    padding: var(--spacing-md);
  }
  
  .ledger-header {
    padding: var(--spacing-md);
  }
  
  .current-stock {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .stock-card,
  .value-card,
  .entry-card,
  .exit-card {
    min-width: auto;
  }
  
  /* Stock filters responsive */
  .stock-filters {
    flex-direction: column;
    gap: var(--spacing-md);
  }
  
  .filter-group {
    min-width: 100%;
  }
}

/* ============================================
   LOTES DE FACTURACIÓN STYLES
   ============================================ */

/* Contenedor principal de lotes */
.lotes-container {
  margin-top: var(--spacing-lg);
}

.lotes-filters {
  display: flex;
  gap: var(--spacing-md);
  align-items: end;
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-lg);
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  flex-wrap: wrap;
}

/* Formulario de crear lote */
.form-container {
  margin-bottom: var(--spacing-lg);
}

.form-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
}

.form-card h3 {
  margin-bottom: var(--spacing-lg);
  color: var(--primary-color);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.form-row {
  display: flex;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.form-group {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.form-group label {
  font-weight: 500;
  color: var(--text-primary);
  font-size: 0.9rem;
}

.form-group input,
.form-group textarea {
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  font-size: 0.9rem;
  background: var(--bg-primary);
  color: var(--text-primary);
  transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(27, 115, 50, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 60px;
}

/* Grid de modelos para lotes */
.modelos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.modelo-card {
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  background: var(--bg-primary);
  transition: all 0.3s ease;
  cursor: pointer;
}

.modelo-card:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-sm);
}

.modelo-card.selected {
  border-color: var(--primary-color);
  background: rgba(27, 115, 50, 0.05);
  box-shadow: 0 0 0 3px rgba(27, 115, 50, 0.1);
}

.modelo-header h4 {
  margin: 0 0 var(--spacing-xs) 0;
  color: var(--primary-color);
  font-size: 1.1rem;
}

.modelo-header p {
  margin: 0 0 var(--spacing-xs) 0;
  color: var(--text-primary);
  font-size: 0.9rem;
}

.modelo-header small {
  color: var(--text-secondary);
  font-size: 0.8rem;
}

.modelo-inputs {
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-color);
}

.input-group {
  margin-bottom: var(--spacing-sm);
}

.input-group label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.input-group input {
  width: 100%;
  padding: var(--spacing-xs) var(--spacing-sm);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  font-size: 0.9rem;
}

.modelo-total {
  margin-top: var(--spacing-sm);
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--bg-accent);
  border-radius: var(--border-radius-sm);
  font-weight: 600;
  color: var(--primary-color);
  text-align: center;
  font-size: 0.9rem;
}

/* Resumen del lote */
.lote-resumen {
  margin-top: var(--spacing-lg);
  padding: var(--spacing-lg);
  background: linear-gradient(135deg, rgba(27, 115, 50, 0.1), rgba(27, 115, 50, 0.05));
  border: 1px solid var(--primary-color);
  border-radius: var(--border-radius);
}

.lote-resumen h4 {
  margin: 0 0 var(--spacing-md) 0;
  color: var(--primary-color);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.resumen-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--spacing-md);
}

.stat-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm);
  background: var(--bg-primary);
  border-radius: var(--border-radius-sm);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.stat-value {
  font-weight: 600;
  color: var(--primary-color);
}

/* Acciones del formulario */
.form-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: flex-end;
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border-color);
}

/* Lista de modelos en tabla */
.models-count {
  font-weight: 600;
  color: var(--primary-color);
}

.models-list {
  display: block;
  margin-top: var(--spacing-xs);
  color: var(--text-secondary);
  font-size: 0.8rem;
}

/* Mensaje de no hay modelos */
.no-models {
  text-align: center;
  padding: var(--spacing-xl);
  color: var(--text-secondary);
  font-style: italic;
}

/* Responsive para lotes */
@media (max-width: 768px) {
  .form-row {
    flex-direction: column;
    gap: var(--spacing-md);
  }
  
  .lotes-filters {
    flex-direction: column;
    align-items: stretch;
  }
  
  .modelos-grid {
    grid-template-columns: 1fr;
  }
  
  .form-actions {
    flex-direction: column;
  }
  
  .resumen-stats {
    grid-template-columns: 1fr;
  }
}

/* Print styles */
@media print {
  .navbar,
  .section-actions,
  .table-actions {
    display: none !important;
  }
  
  .main-content {
    max-width: none;
    padding: 0;
  }
  
  .data-table {
    border: 1px solid #000;
  }
  
  .data-table th,
  .data-table td {
    border: 1px solid #000;
    padding: 8px;
  }
}

/* Stock Grid View */
.stock-grid-view {
  padding: var(--spacing-lg);
}

.stock-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-md);
}

.stock-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  overflow: hidden;
  transition: var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.stock-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.stock-card.out-of-stock {
  border-left: 4px solid var(--danger-color);
}

.stock-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: var(--spacing-lg);
  cursor: pointer;
  transition: var(--transition-fast);
}

.stock-card-header:hover {
  background: var(--bg-accent);
}

.model-info-compact {
  flex: 1;
  min-width: 0;
}

.model-code {
  margin: 0 0 var(--spacing-xs) 0;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--primary-color);
}

.model-description {
  margin: 0 0 var(--spacing-sm) 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.3;
}

.provider-tag {
  display: inline-block;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-size: 0.8rem;
  padding: 2px 8px;
  border-radius: 12px;
  border: 1px solid var(--border-color);
}

.stock-summary {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--spacing-xs);
  text-align: right;
}

.stock-value {
  display: flex;
  align-items: baseline;
  gap: var(--spacing-xs);
}

.stock-value .value {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--success-color);
}

.stock-value.zero .value {
  color: var(--danger-color);
}

.stock-value .unit {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.stock-price .price {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.expand-icon {
  margin-top: var(--spacing-sm);
  transition: var(--transition-fast);
  color: var(--text-secondary);
}

.expand-icon.expanded {
  transform: rotate(180deg);
}

.expand-icon span {
  font-size: 0.8rem;
}

.stock-card-details {
  padding: 0 var(--spacing-lg) var(--spacing-lg) var(--spacing-lg);
  border-top: 1px solid var(--border-color);
  background: var(--bg-accent);
}

.details-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.detail-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm);
  background: var(--bg-primary);
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--border-color);
}

.detail-item .label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.detail-item .value {
  font-weight: 600;
  color: var(--text-primary);
}

.detail-item .value.entrada {
  color: var(--success-color);
}

.detail-item .value.salida {
  color: var(--danger-color);
}

.card-actions {
  display: flex;
  justify-content: center;
}

.btn-view-ledger {
  background: var(--primary-color);
  color: white;
  border: none;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.btn-view-ledger:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}

/* Vista responsiva para grid */
@media (max-width: 768px) {
  .stock-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .details-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
  }
  
  .stock-card-header {
    flex-direction: column;
    gap: var(--spacing-md);
    align-items: stretch;
  }
  
  .stock-summary {
    align-items: flex-start;
    flex-direction: row;
    justify-content: space-between;
  }
  
  /* Movimientos recientes responsive */
  .movement-item {
    flex-direction: column;
    align-items: stretch;
    gap: var(--spacing-sm);
  }
  
  .movement-date-section {
    min-width: auto;
    align-self: flex-start;
  }
  
  .movement-type-info {
    justify-content: space-between;
  }
  
  .movement-values-section {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    min-width: auto;
  }
}

/* ============================================
   LOADING STATES & SKELETONS
   ============================================ */

/* Skeleton Loaders */
.skeleton-container {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
}

.skeleton-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  animation: skeleton-pulse 1.5s ease-in-out infinite;
}

.skeleton-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.skeleton-circle {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--bg-accent);
  flex-shrink: 0;
}

.skeleton-circle.small {
  width: 40px;
  height: 40px;
}

.skeleton-lines {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.skeleton-line {
  height: 16px;
  background: var(--bg-accent);
  border-radius: var(--border-radius-sm);
  animation: skeleton-shimmer 1.5s ease-in-out infinite;
}

.skeleton-line.short {
  width: 60%;
}

.skeleton-body {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.skeleton-table {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.skeleton-table-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
}

.skeleton-list-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  margin-bottom: var(--spacing-sm);
}

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

@keyframes skeleton-shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

/* Spinner */
.spinner-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-2xl);
  gap: var(--spacing-md);
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border-color);
  border-top: 3px solid var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

.spinner-message {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.button-spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top: 2px solid white;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-right: var(--spacing-xs);
}

/* Loading Overlay */
.loading-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  border-radius: inherit;
}

.loading-overlay-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
}

/* Empty State */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-2xl);
  text-align: center;
  min-height: 300px;
}

.empty-state-icon {
  font-size: 4rem;
  margin-bottom: var(--spacing-md);
  opacity: 0.5;
}

.empty-state-title {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.empty-state-message {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
  max-width: 400px;
}

/* Progress Bar */
.progress-bar-container {
  width: 100%;
  padding: var(--spacing-md);
}

.progress-bar-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
  font-weight: 500;
}

.progress-bar {
  width: 100%;
  height: 24px;
  background: var(--bg-accent);
  border-radius: var(--border-radius-sm);
  overflow: hidden;
  position: relative;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
  transition: width 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.progress-bar-text {
  color: white;
  font-size: 0.75rem;
  font-weight: 600;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

/* Button Loading State */
.btn-primary.loading,
.btn-secondary.loading {
  position: relative;
  pointer-events: none;
  opacity: 0.7;
}

/* ============================================
   DARK MODE
   ============================================ */

/* Dark Theme Variables */
.dark-theme {
  /* Colores principales */
  --primary-color: #2ecc71;
  --primary-dark: #27ae60;
  --primary-light: #3ddc81;
  
  /* Escala de grises invertida */
  --gray-50: #1a1a1a;
  --gray-100: #2d2d2d;
  --gray-200: #3d3d3d;
  --gray-300: #4d4d4d;
  --gray-400: #9e9e9e;
  --gray-500: #b8b8b8;
  --gray-600: #d4d4d4;
  --gray-700: #e8e8e8;
  
  /* Backgrounds y bordes */
  --bg-primary: #1a1a1a;
  --bg-secondary: #2d2d2d;
  --bg-accent: #3d3d3d;
  --border-color: #4d4d4d;
  
  /* Texto */
  --text-primary: #e8e8e8;
  --text-secondary: #b8b8b8;
  --text-light: #9e9e9e;
  
  /* Sombras más sutiles */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 24px rgba(0, 0, 0, 0.5);
}

/* Theme Toggle Button */
.theme-toggle {
  background: none;
  border: none;
  font-size: 1.3rem;
  cursor: pointer;
  padding: var(--spacing-xs);
  border-radius: var(--border-radius-sm);
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
}

.theme-toggle:hover {
  background: var(--bg-accent);
  transform: scale(1.1);
}

.theme-toggle:active {
  transform: scale(0.95);
}

/* Dark mode specific adjustments */
.dark-theme .auth-screen {
  background-color: var(--bg-primary);
}

.dark-theme .auth-screen::before {
  background: rgba(0, 0, 0, 0.7);
}

.dark-theme .loading-overlay {
  background: rgba(26, 26, 26, 0.9);
}

.dark-theme .skeleton-line {
  background: linear-gradient(
    90deg,
    var(--bg-accent) 0%,
    var(--bg-secondary) 50%,
    var(--bg-accent) 100%
  );
  background-size: 200% 100%;
}

.dark-theme .data-table th {
  background: var(--primary-dark);
  border-bottom-color: var(--primary-color);
}

.dark-theme .section-header h1 {
  background: var(--primary-dark);
}

.dark-theme .kpi-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--primary-color);
}

.dark-theme input:focus,
.dark-theme select:focus,
.dark-theme textarea:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(46, 204, 113, 0.2);
}

/* Smooth theme transition */
* {
  transition: background-color 0.3s ease, 
              color 0.3s ease, 
              border-color 0.3s ease;
}

/* Preserve animations */
.spinner,
.loading-spinner,
.skeleton-line {
  transition: none;
}

/* ============================================
   ACCESSIBILITY IMPROVEMENTS
   ============================================ */

/* Focus visible para navegación por teclado */
*:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Skip to content link */
.skip-to-content {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--primary-color);
  color: white;
  padding: var(--spacing-sm) var(--spacing-md);
  text-decoration: none;
  border-radius: 0 0 var(--border-radius-sm) 0;
  z-index: 1000;
  transition: top 0.3s;
}

.skip-to-content:focus {
  top: 0;
}

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

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --border-color: #000000;
    --text-primary: #000000;
  }
  
  .dark-theme {
    --border-color: #ffffff;
    --text-primary: #ffffff;
  }
  
  .btn-primary,
  .btn-secondary {
    border: 2px solid currentColor;
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .skeleton-line {
    animation: none;
  }
  
  .spinner {
    animation: none;
    border: 3px solid var(--primary-color);
  }
}

/* Print styles */
@media print {
  .navbar,
  .nav-toggle,
  .theme-toggle,
  .section-actions,
  .table-actions,
  .filters-container,
  .btn-primary,
  .btn-secondary {
    display: none !important;
  }
  
  .main-content {
    padding: 0;
    max-width: 100%;
  }
  
  .data-table {
    border: 1px solid #000;
  }
  
  .data-table th,
  .data-table td {
    border: 1px solid #000;
    padding: 8px;
  }
  
  body {
    background: white;
    color: black;
  }
}