:root {
  /* Colores base */
  --koud-white: #ffffff;
  --koud-black: #111827;
  --koud-accent: #3b82f6;
  --koud-primary: #2563eb;

  /* Escala de grises */
  --koud-gray-50: #f9fafb;
  --koud-gray-100: #f3f4f6;
  --koud-gray-200: #e5e7eb;
  --koud-gray-300: #d1d5db;
  --koud-gray-400: #9ca3af;
  --koud-gray-500: #6b7280;
  --koud-gray-600: #4b5563;
  --koud-gray-700: #374151;
  --koud-gray-800: #1f2937;
  --koud-gray-900: #111827;

  /* Estados */
  --koud-success: #059669;
  --koud-warning: #d97706;
  --koud-error: #dc2626;
  --koud-info: #0284c7;

  /* Variables del tema claro (default) */
  --bg-primary: var(--koud-white);
  --bg-secondary: var(--koud-gray-50);
  --text-primary: var(--koud-gray-900);
  --text-secondary: var(--koud-gray-600);
  --border-color: var(--koud-gray-200);
  --card-bg: var(--koud-white);
  --card-border: var(--koud-gray-200);
  --hover-bg: var(--koud-gray-50);
  --input-bg: var(--koud-white);
  --input-border: var(--koud-gray-300);
  --input-text: var(--koud-gray-900);
  --sidebar-bg: var(--koud-black);
  --sidebar-text: var(--koud-gray-400);
  --sidebar-hover: var(--koud-gray-700);
  --body-bg: var(--koud-white);
  --main-bg: var(--koud-white);

  /* Sombras */
  --koud-shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --koud-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --koud-shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --koud-shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

/* Variables del tema oscuro */
:root.dark-mode {
  --bg-primary: var(--koud-gray-900);
  --bg-secondary: var(--koud-gray-800);
  --text-primary: var(--koud-gray-100);
  --text-secondary: var(--koud-gray-400);
  --border-color: var(--koud-gray-700);
  --card-bg: var(--koud-gray-800);
  --card-border: var(--koud-gray-700);
  --hover-bg: var(--koud-gray-700);
  --input-bg: var(--koud-gray-800);
  --input-border: var(--koud-gray-600);
  --input-text: var(--koud-gray-100);
  --sidebar-bg: var(--koud-gray-900);
  --sidebar-text: var(--koud-gray-300);
  --sidebar-hover: var(--koud-gray-600);
  --body-bg: var(--koud-gray-900);
  --main-bg: var(--koud-gray-900);
}

:root.dark-mode body {
  background-color: var(--koud-gray-900);
  color: var(--koud-gray-100);
}

:root.dark-mode .card {
  background-color: var(--koud-gray-800);
  border-color: var(--koud-gray-700);
}

:root.dark-mode .table {
  color: var(--koud-gray-100);
}

:root.dark-mode .table thead th {
  background-color: var(--koud-gray-800);
  color: var(--koud-gray-400);
  border-color: var(--koud-gray-700);
}

:root.dark-mode .table tbody td {
  border-color: var(--koud-gray-700);
}

:root.dark-mode .table tbody tr:hover {
  background-color: var(--koud-gray-700);
}

:root.dark-mode .form-control {
  background-color: var(--koud-gray-800);
  border-color: var(--koud-gray-700);
  color: var(--koud-gray-100);
}

:root.dark-mode .form-control:focus {
  background-color: var(--koud-gray-800);
  color: var(--koud-gray-100);
}

/* Aplicar transiciones suaves */
body, .card, .form-control, .table, .sidebar, .btn {
  transition: background-color 0.3s ease, 
              color 0.3s ease, 
              border-color 0.3s ease;
}

/* Aplicar variables del tema */
body {
  background-color: var(--body-bg);
  color: var(--text-primary);
}

.main-content {
  background-color: var(--main-bg);
  color: var(--text-primary);
  transition: margin-left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  margin-top: 60px; /* Espacio para el header superior */
  padding: 20px;
  min-height: calc(100vh - 60px); /* Ajustar la altura mínima */
}

.main-content.shifted {
  margin-left: 280px;
}

@media (max-width: 991.98px) {
  .main-content.shifted {
    margin-left: 0;
  }
  
  .sidebar {
    left: -280px !important; /* Forzar a ocultar en móviles */
  }
  
  .sidebar.active {
    left: 0 !important; /* Forzar a mostrar cuando tiene la clase active */
  }
  
  /* Mostrar el botón de menú */
  .menu-toggle {
    display: flex !important;
    visibility: visible !important;
    opacity: 1 !important;
  }
}

@media (min-width: 992px) {
  .sidebar {
    left: 0;
  }
  
  .main-content {
    margin-left: 280px;
    transition: none; /* Evitar animación en escritorio */
  }
  
  /* En escritorio ocultamos el botón */
  .menu-toggle {
    display: none !important;
  }
  
  /* Asegurar que el sidebar no desaparezca en escritorio */
  .sidebar.active {
    left: 0;
  }
  
  /* Asegurar que el contenido principal no se solape con el sidebar */
  .main-content.shifted {
    margin-left: 280px;
  }
}

.card {
  background-color: var(--card-bg);
  border-color: var(--card-border);
}

.table {
  color: var(--text-primary);
}

.table thead th {
  background-color: var(--bg-secondary);
  color: var(--text-secondary);
  border-color: var(--border-color);
}

.table tbody td {
  border-color: var(--border-color);
}

.table tbody tr:hover {
  background-color: var(--hover-bg);
}

.form-control {
  background-color: var(--input-bg);
  border-color: var(--input-border);
  color: var(--input-text);
}

.form-control:focus {
  background-color: var(--input-bg);
  color: var(--input-text);
}

/* Animaciones */
.fade-in {
  animation: fadeIn 0.3s ease-in;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Sidebar moderno */
.sidebar {
  position: fixed;
  top: 0;
  left: -280px; /* Oculto por defecto */
  height: 100vh;
  width: 280px;
  background: linear-gradient(180deg, #1a237e, #1e3a8a);
  z-index: 1080; /* Aumentado para estar por encima de otros elementos excepto el botón */
  box-shadow: var(--koud-shadow-lg);
  display: flex;
  flex-direction: column;
  transition: left 0.3s ease-in-out;
  overflow-y: auto; /* Permitir scroll si el contenido es muy largo */
}

/* Cuando tiene la clase active, se muestra */
.sidebar.active {
  left: 0 !important;
  box-shadow: 4px 0 15px rgba(0, 0, 0, 0.3);
}

/* Overlay para cuando el sidebar está activo en móvil */
.sidebar-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 1070;
}

.sidebar-overlay.active {
  display: block;
}

/* Mostrar menú de hamburguesa */
.menu-toggle {
  /* Por defecto oculto, se muestra solo cuando hay sidebar */
  display: none !important; 
  position: fixed;
  top: 12px;
  left: 15px;
  width: 45px;
  height: 45px;
  border-radius: 8px;
  background-color: #2563eb;
  color: white;
  border: none;
  padding: 0;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  font-size: 1.5rem;
  cursor: pointer;
  box-shadow: 0 4px 6px rgba(0,0,0,0.2);
  transition: all 0.2s ease;
  visibility: visible !important;
  opacity: 1 !important;
}

.menu-toggle i {
  pointer-events: none;
}

.menu-toggle:hover {
  background-color: #1e4fd0;
  transform: scale(1.05);
}

.menu-toggle:active {
  transform: scale(0.95);
  background-color: #1c4ab8;
}

/* En pantallas de escritorio */
@media (min-width: 992px) {
  .menu-toggle {
    display: none !important;
  }
  
  /* En pantallas grandes, el sidebar siempre debe estar visible */
  .sidebar {
    left: 0 !important;
  }
  
  /* Y el contenido principal debe tener margen */
  .main-content {
    margin-left: 280px !important;
  }
}

/* En pantallas móviles */
@media (max-width: 991.98px) {
  /* El botón de menú debe ser visible */
  .menu-toggle {
    display: flex;
  }
  
  /* El sidebar debe estar oculto por defecto */
  .sidebar {
    left: -280px !important;
  }
  
  /* Pero visible cuando tiene la clase active */
  .sidebar.active {
    left: 0 !important;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.3);
  }
  
  /* El contenido principal no debe tener margen */
  .main-content {
    margin-left: 0 !important;
  }
}

/* Solo mostrar cuando existe sidebar y estamos en móvil */
@media (max-width: 991.98px) {
  body:has(.sidebar) .menu-toggle {
    display: flex !important;
  }
  
  #menuHamburger {
    display: flex !important;
  }
}

.sidebar .navbar-brand {
  padding: 1rem 1.5rem 1rem 4.5rem; /* Aumentar el espacio para el botón de hamburguesa */
  display: flex;
  align-items: center;
  height: 60px;
  background-color: rgba(0, 0, 0, 0.2);
}

.sidebar .navbar-brand img {
  height: 35px;
  width: auto;
  filter: brightness(0) invert(1);
}

.sidebar .nav-link {
  color: #d1d5db; /* Color más claro para mejor contraste */
  font-weight: 500;
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  position: relative;
  margin: 0.25rem 0;
  border-left: 3px solid transparent;
  transition: all 0.2s ease;
}

.sidebar .nav-link:hover {
  color: #ffffff;
  background-color: rgba(255, 255, 255, 0.1);
  border-left: 3px solid rgba(255, 255, 255, 0.5);
}

.sidebar .nav-link.active {
  color: #ffffff;
  background-color: rgba(255, 255, 255, 0.15);
  border-left: 3px solid #ffffff;
}

.sidebar .nav-link i {
  font-size: 1.25rem;
  opacity: 0.9;
}

.sidebar .nav-link span {
  font-size: 0.9375rem;
}

.sidebar .mt-auto {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1rem;
  margin-top: auto;
  background-color: rgba(0, 0, 0, 0.1);
}

/* Ajustar los dropdowns del sidebar */
.sidebar .dropdown-menu {
  background: #172554;
  border: none;
  border-radius: 8px;
  box-shadow: 0 10px 15px rgba(0, 0, 0, 0.3);
  margin-top: 5px;
  border-left: none;
}

.sidebar .dropdown-item {
  color: #d1d5db;
  padding: 0.625rem 1.5rem;
  transition: all 0.2s ease;
}

.sidebar .dropdown-item:hover {
  background-color: rgba(255, 255, 255, 0.1);
  color: #ffffff;
}

.sidebar .dropdown-header {
  color: #9ca3af;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.sidebar .dropdown-divider {
  border-color: rgba(255, 255, 255, 0.1);
}

/* Estilo para el toggle del dropdown */
.sidebar .dropdown-toggle::after {
  margin-left: auto;
  transition: transform 0.2s ease;
}

.sidebar .dropdown-toggle[aria-expanded="true"]::after {
  transform: rotate(180deg);
}

/* Tema oscuro para la barra lateral */
:root.dark-mode .sidebar {
  background: linear-gradient(180deg, #0f172a, #111827);
}

:root.dark-mode .menu-toggle {
  background-color: #374151;
}

/* Ajustes para el botón de exportar en el estado de resultados */
.d-flex.gap-2 .dropdown {
    margin-left: 1rem;
}

.dropdown-menu {
    min-width: 200px;
    padding: 0.5rem 0;
}

.dropdown-item {
    padding: 0.5rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Cards personalizados */
.card {
  border: none;
  border-radius: 20px;
  box-shadow: var(--koud-shadow);
  background: var(--koud-white);
  overflow: hidden;
  position: relative;
  backdrop-filter: blur(8px);
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--koud-shadow-lg);
}

.card-header {
  background-color: var(--koud-white);
  border-bottom: 1px solid var(--koud-gray-200);
  padding: 1.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-header h5 {
  margin: 0;
  font-weight: 700;
  color: var(--koud-gray-900);
  font-size: 1.125rem;
  letter-spacing: -0.025em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.card-header h5 i {
  color: var(--koud-accent);
  font-size: 1.25em;
}

.card-body {
  padding: 1.75rem;
  color: var(--koud-gray-700);
}

/* Cards de estadísticas */
.card.bg-primary,
.card.bg-success,
.card.bg-info,
.card.bg-warning {
  background: linear-gradient(145deg, var(--koud-black), var(--koud-gray-800)) !important;
  border: 1px solid var(--koud-gray-800);
}

.card.bg-primary .card-body,
.card.bg-success .card-body,
.card.bg-info .card-body,
.card.bg-warning .card-body {
    padding: 2rem;
    min-height: 160px;
}

.card.bg-primary h5.card-title,
.card.bg-success h5.card-title,
.card.bg-info h5.card-title,
.card.bg-warning h5.card-title {
    color: var(--koud-gray-300);
    font-size: 1.125rem;
    font-weight: 500;
    margin-bottom: 1rem;
    letter-spacing: 0.025em;
    white-space: nowrap;
}

.card.bg-primary h3.display-5,
.card.bg-success h3.display-5,
.card.bg-info h3.display-5,
.card.bg-warning h3.display-5 {
    color: var(--koud-white);
    font-size: 2.5rem;
    font-weight: 700;
    margin: 0;
    letter-spacing: -0.025em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Animación al cargar para cards de estadísticas */
@keyframes cardAppear {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.row > [class*='col-'] {
  animation: cardAppear 0.5s ease-out forwards;
}

.row > [class*='col-']:nth-child(2) {
  animation-delay: 0.1s;
}

.row > [class*='col-']:nth-child(3) {
  animation-delay: 0.2s;
}

.row > [class*='col-']:nth-child(4) {
  animation-delay: 0.3s;
}

/* Botones personalizados */
.btn {
  font-weight: 600;
  border-radius: 10px;
  padding: 0.75rem 1.5rem;
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  font-size: 0.9375rem;
  letter-spacing: 0.025em;
  text-transform: none;
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: transparent;
  transition: all 0.2s ease;
}

.btn:hover::after {
  background-color: rgba(255, 255, 255, 0.1);
}

.btn i {
  font-size: 1.125em;
  transition: transform 0.2s ease;
}

.btn:hover i {
  transform: translateX(2px);
}

.btn-primary {
  background-color: var(--koud-primary);
  border: 2px solid var(--koud-primary);
  color: var(--koud-white);
}

.btn-primary:hover {
  background-color: var(--koud-gray-900);
  border-color: var(--koud-gray-900);
  transform: translateY(-2px);
  box-shadow: var(--koud-shadow-md);
}

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

.btn-outline-secondary {
  background-color: transparent;
  border: 2px solid var(--koud-gray-300);
  color: var(--koud-gray-700);
}

.btn-outline-secondary:hover {
  border-color: var(--koud-gray-400);
  color: var(--koud-gray-900);
  background-color: var(--koud-gray-50);
}

.btn-secondary {
  background-color: var(--koud-gray-200);
  border-color: var(--koud-gray-200);
  color: var(--koud-gray-800);
}

.btn-secondary:hover {
  background-color: var(--koud-gray-300);
  border-color: var(--koud-gray-300);
  color: var(--koud-black);
}

.btn-sm {
  padding: 0.25rem 0.5rem;
  font-size: 0.875rem;
}

.btn-danger {
  background-color: #dc3545;
  border-color: #dc3545;
  color: var(--koud-white);
}

.btn-danger:hover {
  background-color: #c82333;
  border-color: #bd2130;
  transform: translateY(-1px);
  box-shadow: 0 4px 6px rgba(220, 53, 69, 0.2);
}

.btn-warning {
  background-color: #ffc107;
  border-color: #ffc107;
  color: var(--koud-black);
}

.btn-warning:hover {
  background-color: #e0a800;
  border-color: #d39e00;
  transform: translateY(-1px);
  box-shadow: 0 4px 6px rgba(255, 193, 7, 0.2);
}

/* Tablas */
.table {
  margin-bottom: 0;
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 0.9375rem;
}

.table thead th {
  border-top: none;
  border-bottom: 2px solid var(--koud-gray-300);
  color: var(--koud-gray-700);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  padding: 1.25rem 1rem;
  background-color: var(--koud-gray-50);
  white-space: nowrap;
}

.table tbody td {
  padding: 1.25rem 1rem;
  border-bottom: 1px solid var(--koud-gray-200);
  vertical-align: middle;
  color: var(--koud-gray-800);
}

.table tbody tr {
  transition: all 0.2s ease-in-out;
}

.table tbody tr:hover {
  background-color: var(--koud-gray-50);
  transform: translateY(-1px);
  box-shadow: var(--koud-shadow-sm);
}

.table tbody tr:hover td {
  color: var(--koud-gray-900);
}

.table-responsive {
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--koud-shadow-sm);
  background-color: var(--koud-white);
}

/* Personalización para tablas en cards */
.card .table-responsive {
  box-shadow: none;
}

.card .table thead th {
  background-color: transparent;
}

/* Badges */
.badge {
  font-weight: 500;
  padding: 0.5em 0.75em;
}

/* Forms */
.form-control {
  border-radius: 6px;
  border: 1px solid var(--koud-gray-300);
  padding: 0.75rem 1rem;
}

.form-control:focus {
  border-color: var(--koud-gray-400);
  box-shadow: 0 0 0 0.2rem rgba(0, 0, 0, 0.1);
}

/* Layout */
.container {
  padding: 2rem 1rem;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  margin-bottom: 1rem;
}

/* Sistema de Notificaciones */
.notification-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 400px;
  pointer-events: none;
}

.notification {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1rem;
  margin-bottom: 0.5rem;
  box-shadow: var(--koud-shadow-lg);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  pointer-events: auto;
  transition: all 0.3s ease;
  max-width: 100%;
}

.notification.fade-in {
  animation: notificationFadeIn 0.3s ease forwards;
}

.notification.fade-out {
  animation: notificationFadeOut 0.3s ease forwards;
}

.notification i {
  font-size: 1.25rem;
  flex-shrink: 0;
}

.notification-message {
  color: var(--text-primary);
  font-size: 0.9375rem;
  line-height: 1.4;
  flex-grow: 1;
}

.notification-close {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  transition: all 0.2s ease;
}

.notification-close:hover {
  background-color: var(--hover-bg);
  color: var(--text-primary);
}

.notification-success {
  border-left: 4px solid var(--koud-success);
}

.notification-success i:first-child {
  color: var(--koud-success);
}

.notification-error {
  border-left: 4px solid var(--koud-error);
}

.notification-error i:first-child {
  color: var(--koud-error);
}

.notification-warning {
  border-left: 4px solid var(--koud-warning);
}

.notification-warning i:first-child {
  color: var(--koud-warning);
}

.notification-info {
  border-left: 4px solid var(--koud-info);
}

.notification-info i:first-child {
  color: var(--koud-info);
}

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

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

/* Utilities */
.text-koud {
  color: var(--koud-black);
}

.bg-koud {
  background-color: var(--koud-black);
}

/* Supplier Autocomplete Styles */
.supplier-search-wrapper {
  position: relative;
}

.supplier-suggestions {
  display: none;
  position: absolute;
  top: calc(100% + 5px);
  left: 0;
  right: 0;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  box-shadow: var(--koud-shadow-lg);
  max-height: 200px;
  overflow-y: auto;
  z-index: 9999;
}

.supplier-suggestions.show {
  display: block;
}

.supplier-suggestion-item {
  padding: 0.75rem 1rem;
  cursor: pointer;
  transition: all 0.15s ease;
  color: var(--text-primary);
  font-weight: 500;
  user-select: none;
  display: block;
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  border-bottom: 1px solid var(--border-color);
}

.supplier-suggestion-item:last-child {
  border-bottom: none;
}

.supplier-suggestion-item:hover {
  background-color: var(--hover-bg);
  color: var(--koud-accent);
}

.supplier-suggestion-item:active {
  background-color: var(--hover-bg);
  transform: translateY(1px);
}

/* Estilos específicos para la página de login */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    width: 100%;
    background: linear-gradient(135deg, #1a237e, #1976d2);
    padding: 1rem;
}

:root.dark-mode .login-page {
    background: linear-gradient(135deg, #0f172a, #1e3a8a);
}

.login-page .container {
    max-width: 100%;
    padding: 0;
}

.login-page .logo-container {
    margin-bottom: 2rem;
}

.login-page .login-logo {
    height: 60px;
    width: auto;
    filter: brightness(0) invert(1);
    transition: all 0.3s ease;
}

.login-page .card {
    border-radius: 16px;
    overflow: hidden;
    border: none;
    box-shadow: 0 10px 25px -5px rgba(0,0,0,0.2), 0 8px 10px -6px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.login-page .card-header {
    padding: 1.5rem 1.5rem 0.5rem;
}

.login-page .card-header h3 {
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--koud-gray-900);
}

.login-page .form-control {
    border-radius: 10px;
    font-size: 1rem;
    padding: 0.75rem 1rem;
    border: 1px solid var(--koud-gray-200);
    background-color: var(--koud-white);
    transition: all 0.2s ease;
}

.login-page .form-control:focus {
    border-color: var(--koud-primary);
    box-shadow: 0 0 0 0.25rem rgba(37, 99, 235, 0.1);
}

.login-page .btn-primary {
    border-radius: 10px;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    background-color: var(--koud-primary);
    border-color: var(--koud-primary);
    transition: all 0.3s ease;
}

.login-page .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 15px rgba(37, 99, 235, 0.2);
    background-color: #1e40af;
    border-color: #1e40af;
}

.login-page a {
    color: var(--koud-primary);
    text-decoration: none;
    transition: color 0.2s ease;
}

.login-page a:hover {
    color: #1e40af;
    text-decoration: underline;
}

/* Ajustes para modo oscuro */
:root.dark-mode .login-page .card {
    background-color: var(--koud-gray-800);
    border-color: var(--koud-gray-700);
}

:root.dark-mode .login-page .card-header h3 {
    color: var(--koud-gray-100);
}

:root.dark-mode .login-page .form-control {
    background-color: var(--koud-gray-700);
    border-color: var(--koud-gray-600);
    color: var(--koud-gray-100);
}

:root.dark-mode .login-page .form-control:focus {
    border-color: var(--koud-primary);
    box-shadow: 0 0 0 0.25rem rgba(37, 99, 235, 0.2);
}

:root.dark-mode .login-page .login-logo {
    filter: brightness(0) invert(1);
}

/* Ajustes para dispositivos móviles */
@media (max-width: 767.98px) {
    .login-page .login-logo {
        height: 50px;
    }
    
    .login-page .card-header h3 {
        font-size: 1.3rem;
    }
}

/* Estilos para submenús anidados */
.dropend .dropdown-toggle::after {
    display: inline-block;
    margin-left: 0.5em;
    vertical-align: middle;
    content: "";
    border-top: 0.3em solid transparent;
    border-right: 0;
    border-bottom: 0.3em solid transparent;
    border-left: 0.3em solid;
}

.dropend .dropdown-menu {
    top: 0;
    right: auto;
    left: 100%;
    margin-top: 0;
    margin-left: 0.125rem;
}

.dropend .dropdown-menu.show {
    display: block;
}

/* Ajustes para dispositivos móviles */
@media (max-width: 991.98px) {
    .dropend .dropdown-menu {
        position: static !important;
        margin-left: 1.5rem;
        box-shadow: none;
        border: none;
        background-color: transparent;
    }
    
    .dropend .dropdown-item {
        padding-left: 1.5rem;
    }
    
    .dropdown-menu .dropdown-menu {
        margin-left: 1rem;
    }
}

/* Destacar el ítem activo en el submenú */
.dropend .dropdown-item.active, 
.dropend .dropdown-item:active,
.dropend .dropdown-item:hover {
    background-color: rgba(0, 123, 255, 0.1);
    color: #007bff;
}