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

:root {
  --primary-color: #2563eb;
  --secondary-color: #64748b;
  --success-color: #10b981;
  --danger-color: #ef4444;
  --warning-color: #f59e0b;
  --background-color: #f8fafc;
  --card-background: #ffffff;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --border-color: #e2e8f0;
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --border-radius: 8px;
  --card-size: 280px;
   --modal-bg: rgba(0, 0, 0, 0.65);
  --modal-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --modal-border-radius: 12px;
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  --focus-ring: 0 0 0 3px rgba(37, 99, 235, 0.1);
  --hover-scale: 1.02;
  --active-scale: 0.98;
  --gradient-primary: linear-gradient(135deg, var(--primary-color) 0%, #1d4ed8 100%);
  --gradient-secondary: linear-gradient(135deg, var(--secondary-color) 0%, #475569 100%);
  --backdrop-filter: blur(20px);
  --glass-bg: rgba(255, 255, 255, 0.1);
  --glass-border: rgba(255, 255, 255, 0.2);

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

*:focus {
  outline: none;
  box-shadow: var(--focus-ring);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: 
    url('acoxpa2.png') fixed;
    background-size: 100vh;
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}



.content {
    position: relative;
    z-index: 1;
    padding: 2rem;
    max-width: 1400px;
    margin: 0 auto;
    background: white;
    border-radius: 15px;
    align-items: center;
}

/* Header */
.header {
  
  padding: 1rem 2rem;
 
 
  top: 0;
  z-index: 100;
}

/* Logo */
.logo-container {
  text-align: center;
  margin-bottom: 1rem;
}

.logo {
  max-width: 150px;
  height: auto;
}

/* Asegúrate de que el resto de tu CSS esté aquí */
.header h1 {
  color: var(--primary-color);
  margin-bottom: 1rem;
  text-align: center;
}

/* Botón del Padrón de Mascotas */
.padron-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, #4CAF50 0%, #2E7D32 100%);
  color: white;
  text-decoration: none;
  padding: 12px 20px;
  border-radius: 25px;
  font-weight: bold;
  font-size: 14px;
  box-shadow: 0 4px 12px rgba(76, 175, 80, 0.3);
  transition: all 0.3s ease;
  margin-right: 15px;
}

.padron-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(76, 175, 80, 0.4);
  color: white;
}

.header-controls {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  align-items: center;
  
}

.search-input,
.filter-select {
  padding: 0.5rem;
 
  border-radius: var(--border-radius);
  font-size: 0.9rem;
  text-align: center; /* Centra el texto dentro de los elementos */
}


.search-input {
  min-width: 250px;
  flex: 1;
}

/* Navegación por secciones */
.section-nav {
  background: var(--card-background);
  padding: 0 2rem;
  
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  justify-content: center; /* Centra el contenido horizontalmente */
  
  top: 80px;
  z-index: 90;
  margin: 0 auto;
}


.section-btn {
  background: none;
  border: none;
  padding: 1rem 1.5rem;
  cursor: pointer;
  border-bottom: 3px solid transparent;
  transition: all 0.2s;
  white-space: nowrap;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  min-width: 80px;
}

.section-btn:hover,
.section-btn.active {
  color: var(--primary-color);
  border-bottom-color: var(--primary-color);
  background: rgba(37, 99, 235, 0.05);
}
.section-icon {
  font-size: 1.2rem;
}

.section-label {
  font-size: 0.8rem;
  font-weight: 500;
}

.section-count {
  font-size: 0.7rem;
  background: var(--primary-color);
  color: white;
  padding: 0.125rem 0.375rem;
  border-radius: 10px;
  min-width: 18px;
  text-align: center;
}

.section-btn.active .section-count {
  background: var(--primary-color);
}

.section-btn:not(.active) .section-count {
  background: var(--secondary-color);
}

/* Botones */
.btn {
  padding: 0.5rem 1rem;
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  font-size: 0.9rem;
  text-decoration: none;
  display: inline-block;
  transition: all 0.2s;
}

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

.btn-primary:hover {
  background: #1d4ed8;
}

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

.btn-secondary:hover {
  background: #475569;
}

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

.btn-danger:hover {
  background: #dc2626;
}

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

.btn-warning:hover {
  background: #d97706;
}

.btn-small {
  padding: 0.25rem 0.5rem;
  font-size: 0.8rem;
}

/* Contenido principal */
.main-content {
  padding: 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

/* Secciones de contenido */
.content-section {
  display: none;
}

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

.section-header {
  margin-bottom: 2rem;
  text-align: center;
}

.section-header h2 {
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  font-size: 2rem;
}

.section-description {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

/* Grid de contenido */
.content-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(var(--card-size), 1fr));
  gap: 1.5rem;
  margin-top: 1rem;
  background: white;
  border-radius: 15px;
}

/* Grupos de secciones para "Todo" */
.section-group {
  grid-column: 1 / -1;
  margin-bottom: 3rem;
}

.section-group-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--border-color);
}

.section-group-header h3 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-primary);
  font-size: 1.5rem;
}

.section-group-icon {
  font-size: 1.5rem;
}

.section-group-count {
  color: var(--text-secondary);
  font-weight: normal;
  font-size: 1rem;
}

.section-group-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(var(--card-size), 1fr));
  gap: 1.5rem;
}

/* Tarjetas de contenido */
.content-card {
  background: var(--card-background);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
  height: 350px;
  display: flex;
  flex-direction: column;
}

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

.card-thumbnail {
  width: 100%;
  height: 180px;
  background: var(--background-color);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.card-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity 0.3s ease;
}

.card-thumbnail img:hover {
  opacity: 0.9;
}

.card-thumbnail .icon {
  font-size: 3rem;
  color: var(--secondary-color);
}

.card-content {
  padding: 1rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.card-description {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  flex: 1;
}

.card-meta {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  margin-bottom: 0.75rem;
}

.tag {
  background: var(--primary-color);
  color: white;
  padding: 0.125rem 0.5rem;
  border-radius: 12px;
  font-size: 0.7rem;
  white-space: nowrap;
}

.card-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: auto;
}

/* Sección vacía */
.empty-section {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--text-secondary);
  grid-column: 1 / -1;
}

.empty-section-icon {
  font-size: 4rem;
  display: block;
  margin-bottom: 1rem;
  opacity: 0.5;
}

.empty-section h3 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

/* Filtros de etiquetas */
.tag-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.5rem;
  justify-content: center; /* Centra el contenido horizontalmente */
  min-width:100%;
}

.tag-filter-item {
  background: var(--background-color);
  border: 1px solid var(--border-color);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  cursor: pointer;
  font-size: 0.8rem;
  transition: all 0.2s;
}

.tag-filter-item:hover,
.tag-filter-item.active {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

/* Estados de carga */
.loading-spinner {
  text-align: center;
  padding: 3rem;
  grid-column: 1 / -1;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--border-color);
  border-top: 4px solid var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 1rem;
}

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

.no-results {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--text-secondary);
  grid-column: 1 / -1;
}

.no-results-content {
  max-width: 400px;
  margin: 0 auto;
}

.no-results-icon {
  font-size: 4rem;
  display: block;
  margin-bottom: 1rem;
  opacity: 0.5;
}

.no-results h3 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

/* Modal Overlay */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--modal-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  animation: modalFadeIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  margin: auto;
}

/* Modal Content */
.modal-content {
  background: var(--card-background);
  border-radius: var(--modal-border-radius);
  width: 90vw;
  max-width: 700px;
  max-height: 85vh;
  position: relative;
  box-shadow: var(--modal-shadow);
  border: 1px solid var(--border-color);
  overflow: auto;
  animation: modalSlideIn 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  margin: auto;
}

.modal-content.large {
  max-width: 900px;
  width: 95vw;
  margin: auto;
}

/* Close Button */
.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: rgba(0, 0, 0, 0.1);
  border: none;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  cursor: pointer;
  color: var(--text-secondary);
  z-index: 1001;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.modal-close:hover {
  background: rgba(0, 0, 0, 0.15);
  color: var(--text-primary);
  transform: scale(1.1);
}

.modal-close:active {
  transform: scale(0.95);
}

/* Modal Body */
.modal-body {
  padding: 2.5rem;
  overflow-y: auto;
  max-height: calc(85vh - 2rem);
  line-height: 1.7;
  color: var(--text-primary);
  font-size: 16px;
}

/* Scrollbar personalizado */
.modal-body::-webkit-scrollbar {
  width: 8px;
}

.modal-body::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.05);
  border-radius: 4px;
}

.modal-body::-webkit-scrollbar-thumb {
  background: rgba(0, 0, 0, 0.2);
  border-radius: 4px;
  transition: background 0.2s ease;
}

.modal-body::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 0, 0, 0.3);
}

/* Animaciones */
@keyframes modalFadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: scale(0.8) translateY(30px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

/* Responsive Design */
@media (max-width: 768px) {
  .modal-content {
    width: 95vw;
    max-height: 90vh;
    margin: 1rem;
    border-radius: var(--border-radius);
  }

  .modal-body {
    padding: 2rem 1.5rem;
    max-height: calc(90vh - 1.5rem);
    font-size: 15px;
  }

  .modal-close {
    top: 0.75rem;
    right: 0.75rem;
    width: 36px;
    height: 36px;
    font-size: 18px;
  }
}

@media (max-width: 480px) {
  .modal-content {
    width: 98vw;
    margin: 0.5rem;
    border-radius: var(--border-radius);
  }

  .modal-body {
    padding: 1.5rem 1rem;
    font-size: 14px;
  }

  .modal-close {
    top: 0.5rem;
    right: 0.5rem;
    width: 32px;
    height: 32px;
    font-size: 16px;
  }
}

/* Soporte para modo oscuro */
@media (prefers-color-scheme: dark) {
  :root {
    --modal-bg: rgba(0, 0, 0, 0.8);
  }

  .modal-close {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
  }

  .modal-close:hover {
    background: rgba(255, 255, 255, 0.2);
    color: var(--text-primary);
  }

  .modal-body::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
  }

  .modal-body::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
  }

  .modal-body::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
  }
}

/* Mejoras adicionales para contenido dinámico */
.modal-body h1, .modal-body h2, .modal-body h3 {
  margin-bottom: 1rem;
  margin-top: 1.5rem;
  color: var(--text-primary);
}

.modal-body h1:first-child,
.modal-body h2:first-child,
.modal-body h3:first-child {
  margin-top: 0;
}

.modal-body p {
  margin-bottom: 1rem;
}

.modal-body ul, .modal-body ol {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}

.modal-body li {
  margin-bottom: 0.5rem;
}

.modal-body img {
  max-width: 100%;
  height: auto;
  border-radius: var(--border-radius);
  margin: 1rem 0;
}

.modal-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
}

.modal-body th,
.modal-body td {
  padding: 0.75rem;
  text-align: left;
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.modal-body th {
  font-weight: 600;
  background: rgba(0, 0, 0, 0.05);
}

/* Estilos del panel de administración */
.admin-body {
  display: grid;
  grid-template-rows: auto auto 1fr;
  height: 100vh;
  background-color: white;
  max-width: 1800px;
}

.admin-header {
  position: static;
  background-color: white;
}

.admin-nav {
  background: var(--card-background);
  padding: 0 2rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
}

.nav-btn {
  background: none;
  border: none;
  padding: 1rem 1.5rem;
  cursor: pointer;
  border-bottom: 3px solid transparent;
  transition: all 0.2s;
  white-space: nowrap;
}

.nav-btn:hover,
.nav-btn.active {
  color: var(--primary-color);
  border-bottom-color: var(--primary-color);
}

.admin-content {
  padding: 2rem;
  overflow-y: auto;
  background-color: white;
}

.admin-section {
  display: none;
}

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

.section-content {
  margin-top: 1rem;
}

/* Dashboard */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.stat-card {
  background: var(--card-background);
  padding: 1.5rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  text-align: center;
}

.stat-card h3 {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.stat-number {
  font-size: 2rem;
  font-weight: bold;
  color: var(--primary-color);
}

/* Gestión de thumbnails */
.thumbnail-management {
  margin-top: 2rem;
  padding: 1.5rem;
  background: var(--card-background);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
}

.thumbnail-management h3 {
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.thumbnail-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.thumbnail-buttons .btn {
  flex: 1;
  min-width: 200px;
}

/* Formularios */
.content-form {
  padding: 1rem;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.5rem;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  font-size: 0.9rem;
}

.form-group textarea {
  resize: vertical;
}

.form-help {
  display: block;
  margin-top: 0.25rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-style: italic;
}

.form-actions {
  display: flex;
  gap: 1rem;
  justify-content: flex-end;
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

/* Gestión de etiquetas */
.tags-manager {
  max-width: 600px;
}

.add-tag-form {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.add-tag-form input {
  flex: 1;
}

.tags-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag-item {
  background: var(--background-color);
  border: 1px solid var(--border-color);
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.tag-delete {
  background: var(--danger-color);
  color: white;
  border: none;
  border-radius: 50%;
  width: 20px;
  height: 20px;
  cursor: pointer;
  font-size: 0.7rem;
}

.tags-selector {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  max-height: 150px;
  overflow-y: auto;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 0.5rem;
}

.tag-checkbox {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.25rem 0.5rem;
  border-radius: var(--border-radius);
  cursor: pointer;
  font-size: 0.8rem;
}

.tag-checkbox:hover {
  background: var(--background-color);
}

.tag-checkbox input {
  width: auto;
}

.tag-color-preview {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
}

/* Lista de administración */
.admin-list {
  background: var(--card-background);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.admin-list-header {
  background: var(--background-color);
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
  font-weight: 600;
}

.admin-list-item {
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 1rem;
  position: relative;
}

.admin-list-item:last-child {
  border-bottom: none;
}

.admin-list-item:hover {
  background: var(--background-color);
}

.admin-item-thumbnail {
  width: 60px;
  height: 60px;
  border-radius: var(--border-radius);
  overflow: hidden;
  flex-shrink: 0;
  background: var(--background-color);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.admin-item-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.admin-item-thumbnail .icon {
  font-size: 1.5rem;
  color: var(--secondary-color);
}

.thumbnail-status-badge {
  position: absolute;
  top: -5px;
  right: -5px;
  background: var(--card-background);
  border: 1px solid var(--border-color);
  border-radius: 50%;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  box-shadow: var(--shadow);
}

.admin-item-info {
  flex: 1;
}

.admin-item-title {
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.admin-item-meta {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.admin-item-actions {
  display: flex;
  gap: 0.5rem;
}

/* Responsive */
@media (max-width: 768px) {
  .header {
    padding: 1rem;
  }

  .header-controls {
    flex-direction: column;
    align-items: stretch;
  }

  .search-input {
    min-width: auto;
  }

  .main-content {
    padding: 1rem;
  }

  .content-grid,
  .section-group-grid {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1rem;
    background: white;
  border-radius: 15px;
  }

  .section-nav {
    padding: 0 1rem;
    top: 70px;
  }

  .section-btn {
    padding: 0.75rem 1rem;
    min-width: 70px;
  }

  .section-icon {
    font-size: 1rem;
  }

  .section-label {
    font-size: 0.7rem;
  }

  .section-group-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .admin-nav {
    padding: 0 1rem;
  }

  .admin-content {
    padding: 1rem;
  }

  .modal-content {
    margin: 1rem;
    max-width: calc(80vw - 2rem);
  }

  .form-actions {
    flex-direction: column;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

  .thumbnail-buttons {
    flex-direction: column;
  }

  .thumbnail-buttons .btn {
    min-width: auto;
  }
}

@media (max-width: 480px) {
  :root {
    --card-size: 200px;
  }

  .content-grid,
  .section-group-grid {
    grid-template-columns: 1fr;
    background: white;
  border-radius: 15px;
  }

  .content-card {
    height: 300px;
  }

  .card-thumbnail {
    height: 150px;
  }

  .section-nav {
    top: 60px;
  }

  .section-btn {
    padding: 0.5rem 0.75rem;
    min-width: 60px;
  }

  .section-header h2 {
    font-size: 1.5rem;
  }

  .section-description {
    font-size: 1rem;
  }
}

/* Utilidades */
.text-center {
  text-align: center;
}
.text-right {
  text-align: right;
}
.mb-1 {
  margin-bottom: 0.5rem;
}
.mb-2 {
  margin-bottom: 1rem;
}
.mt-1 {
  margin-top: 0.5rem;
}
.mt-2 {
  margin-top: 1rem;
}
.hidden {
  display: none !important;
}
.flex {
  display: flex;
}
.flex-1 {
  flex: 1;
}
.gap-1 {
  gap: 0.5rem;
}
.gap-2 {
  gap: 1rem;
}

/* Mejoras para thumbnails */
.card-thumbnail img[src="/placeholder.svg"],
.card-thumbnail img:not([src]) {
  display: none;
}

.admin-item-thumbnail img[src="/placeholder.svg"],
.admin-item-thumbnail img:not([src]) {
  display: none;
}

/* Loading state para thumbnails */
.thumbnail-loading {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
}

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

/* Gestión Manual de Miniaturas */
.manual-thumbnail-management {
  margin-top: 2rem;
  padding: 1.5rem;
  background: var(--card-background);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  border-left: 4px solid var(--primary-color);
}

.manual-thumbnail-management h3 {
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.manual-thumbnail-management p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
  font-size: 0.9rem;
}

.thumbnail-item-selector {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
  align-items: center;
}

.thumbnail-item-selector select {
  flex: 1;
  padding: 0.5rem;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  font-size: 0.9rem;
}

.thumbnail-manager-container {
  border-top: 1px solid var(--border-color);
  padding-top: 1.5rem;
  margin-top: 1.5rem;
}

.current-thumbnail-preview {
  margin-bottom: 1.5rem;
}

.current-thumbnail-preview h4 {
  color: var(--text-primary);
  margin-bottom: 1rem;
  font-size: 1rem;
}

.thumbnail-preview {
  background: var(--background-color);
  border-radius: var(--border-radius);
  padding: 1rem;
  border: 1px solid var(--border-color);
}

.thumbnail-preview-card {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.thumbnail-preview-image {
  width: 80px;
  height: 60px;
  border-radius: var(--border-radius);
  overflow: hidden;
  background: white;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-color);
  flex-shrink: 0;
}

.thumbnail-preview-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.thumbnail-preview-image .icon {
  font-size: 1.5rem;
  color: var(--secondary-color);
}

.thumbnail-preview-info {
  flex: 1;
}

.thumbnail-preview-info h5 {
  margin: 0 0 0.25rem 0;
  color: var(--text-primary);
  font-size: 0.9rem;
}

.thumbnail-preview-info p {
  margin: 0;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.thumbnail-upload-section {
  margin-bottom: 1.5rem;
  padding: 1rem;
  background: rgba(37, 99, 235, 0.05);
  border-radius: var(--border-radius);
  border: 1px dashed var(--primary-color);
}

.thumbnail-upload-section h4 {
  color: var(--primary-color);
  margin-bottom: 1rem;
  font-size: 1rem;
}

.thumbnail-upload-section input[type="file"] {
  margin-bottom: 1rem;
  padding: 0.5rem;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  background: white;
  width: 100%;
}

.thumbnail-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.thumbnail-actions .btn {
  flex: 1;
  min-width: 150px;
}

/* Indicadores en el selector */
.thumbnail-item-selector option {
  padding: 0.5rem;
}

/* Responsive para gestión de miniaturas */
@media (max-width: 768px) {
  .thumbnail-item-selector {
    flex-direction: column;
    align-items: stretch;
  }

  .thumbnail-preview-card {
    flex-direction: column;
    text-align: center;
  }

  .thumbnail-preview-image {
    width: 100px;
    height: 75px;
    margin: 0 auto;
  }

  .thumbnail-actions {
    flex-direction: column;
  }

  .thumbnail-actions .btn {
    min-width: auto;
  }
}

/* Estados de carga para miniaturas */
.thumbnail-uploading {
  opacity: 0.6;
  pointer-events: none;
}

.thumbnail-uploading::after {
  content: "Subiendo...";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(0, 0, 0, 0.8);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  font-size: 0.8rem;
}

/* Mejoras visuales para el selector */
.thumbnail-item-selector select optgroup {
  font-weight: bold;
  color: var(--primary-color);
}

.thumbnail-item-selector select option {
  font-weight: normal;
  color: var(--text-primary);
  padding-left: 1rem;
}

/* Indicadores de estado en las opciones */
.thumbnail-item-selector select option:before {
  content: attr(data-status);
  margin-right: 0.5rem;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: url('acoxpa2.png') fixed;
  background-size: cover;
  background-position: center;
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  scroll-behavior: smooth;
}

/* 3. CONTENEDOR PRINCIPAL CON EFECTOS CRISTAL */
.content {
  position: relative;
  z-index: 1;
  padding: 2rem;
  max-width: 1400px;
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: var(--backdrop-filter);
  -webkit-backdrop-filter: var(--backdrop-filter);
  border-radius: 20px;
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-lg);
}

/* 4. MEJORAS EN BOTONES - ESTADOS Y ANIMACIONES */
.btn {
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
  user-select: none;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left var(--transition-normal);
}

.btn:hover::before {
  left: 100%;
}

.btn:hover {
  transform: translateY(-2px) scale(var(--hover-scale));
  box-shadow: var(--shadow-lg);
}

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

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 14px 0 rgba(37, 99, 235, 0.3);
}

.btn-secondary {
  background: var(--gradient-secondary);
  color: white;
  box-shadow: 0 4px 14px 0 rgba(100, 116, 139, 0.3);
}

.btn-danger {
  background: linear-gradient(135deg, var(--danger-color) 0%, #dc2626 100%);
  color: white;
  box-shadow: 0 4px 14px 0 rgba(239, 68, 68, 0.3);
}

.btn-warning {
  background: linear-gradient(135deg, var(--warning-color) 0%, #d97706 100%);
  color: white;
  box-shadow: 0 4px 14px 0 rgba(245, 158, 11, 0.3);
}

/* 5. MEJORAS EN NAVEGACIÓN DE SECCIONES */
.section-nav {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: var(--backdrop-filter);
  -webkit-backdrop-filter: var(--backdrop-filter);
  padding: 0 2rem;
  border-radius: 15px 15px 0 0;
  border: 1px solid var(--glass-border);
  border-bottom: none;
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  justify-content: center;
  top: 80px;
  z-index: 90;
  margin: 0 auto;
  box-shadow: var(--shadow);
}

.section-btn {
  background: none;
  border: none;
  padding: 1rem 1.5rem;
  cursor: pointer;
  border-bottom: 3px solid transparent;
  transition: all var(--transition-normal);
  white-space: nowrap;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  min-width: 80px;
  border-radius: var(--border-radius) var(--border-radius) 0 0;
  position: relative;
  overflow: hidden;
}

.section-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, var(--primary-color), #1d4ed8);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.section-btn:hover::before,
.section-btn.active::before {
  opacity: 0.1;
}

.section-btn:hover,
.section-btn.active {
  color: var(--primary-color);
  border-bottom-color: var(--primary-color);
  transform: translateY(-2px);
}

.section-btn > * {
  position: relative;
  z-index: 1;
}

/* 6. MEJORAS EN TARJETAS - EFECTOS AVANZADOS */
.content-card {
  background: var(--card-background);
  border-radius: 16px;
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: all var(--transition-normal);
  height: 350px;
  display: flex;
  flex-direction: column;
  border: 1px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  position: relative;
}

.content-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.content-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.content-card:hover::before {
  opacity: 1;
}

.card-thumbnail {
  width: 100%;
  height: 180px;
  background: linear-gradient(135deg, var(--background-color), #e2e8f0);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.card-thumbnail::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 30px;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.1), transparent);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.content-card:hover .card-thumbnail::after {
  opacity: 1;
}

.card-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: all var(--transition-slow);
}

.content-card:hover .card-thumbnail img {
  transform: scale(1.1);
}

/* 7. MEJORAS EN FORMULARIOS */
.form-group input,
.form-group select,
.form-group textarea,
.search-input,
.filter-select {
  padding: 0.75rem;
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius);
  font-size: 0.9rem;
  transition: all var(--transition-fast);
  background: var(--card-background);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus,
.search-input:focus,
.filter-select:focus {
  border-color: var(--primary-color);
  box-shadow: var(--focus-ring);
  transform: scale(1.01);
}

/* 8. MEJORAS EN MODAL - EFECTOS AVANZADOS */
.modal {
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: var(--backdrop-filter);
  -webkit-backdrop-filter: var(--backdrop-filter);
  animation: modalFadeIn 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal-content {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: var(--backdrop-filter);
  -webkit-backdrop-filter: var(--backdrop-filter);
  border: 1px solid var(--glass-border);
  animation: modalSlideIn 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.modal-close {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  transition: all var(--transition-normal);
}

.modal-close:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: scale(1.1) rotate(90deg);
}

/* 9. MEJORAS EN SCROLLBARS GLOBALES */
::-webkit-scrollbar {
  width: 12px;
  height: 12px;
}

::-webkit-scrollbar-track {
  background: var(--background-color);
  border-radius: 6px;
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(135deg, var(--primary-color), #1d4ed8);
  border-radius: 6px;
  border: 2px solid var(--background-color);
  transition: background var(--transition-normal);
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(135deg, #1d4ed8, var(--primary-color));
}

::-webkit-scrollbar-corner {
  background: var(--background-color);
}

/* 10. MEJORAS EN TAGS */
.tag {
  background: var(--gradient-primary);
  color: white;
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 500;
  white-space: nowrap;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
  transition: all var(--transition-fast);
}

.tag:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
}

.tag-filter-item {
  background: var(--card-background);
  border: 2px solid var(--border-color);
  padding: 0.5rem 1rem;
  border-radius: 25px;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 500;
  transition: all var(--transition-normal);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.tag-filter-item:hover,
.tag-filter-item.active {
  background: var(--gradient-primary);
  color: white;
  border-color: var(--primary-color);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.3);
}

/* 11. MEJORAS EN ANIMACIONES DE CARGA */
.loading-spinner {
  padding: 4rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.spinner {
  width: 50px;
  height: 50px;
  border: 4px solid var(--border-color);
  border-top: 4px solid var(--primary-color);
  border-radius: 50%;
  animation: spin 1s cubic-bezier(0.68, -0.55, 0.265, 1.55) infinite;
  position: relative;
}

.spinner::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  right: 2px;
  bottom: 2px;
  border: 2px solid transparent;
  border-top: 2px solid rgba(37, 99, 235, 0.3);
  border-radius: 50%;
  animation: spin 2s linear infinite reverse;
}

/* 12. MEJORAS EN RESPONSIVE DESIGN */
@media (max-width: 768px) {
  .content {
    margin: 1rem;
    padding: 1.5rem;
    border-radius: 15px;
  }
  
  .content-card:hover {
    transform: translateY(-4px) scale(1.01);
  }
  
  .btn:hover {
    transform: scale(1.02);
  }
  
  .section-btn:hover {
    transform: translateY(-1px);
  }
}

@media (max-width: 480px) {
  .content {
    margin: 0.5rem;
    padding: 1rem;
    border-radius: 12px;
  }
  
  .content-card:hover {
    transform: translateY(-2px);
  }
}

/* 13. MEJORAS EN ACCESIBILIDAD */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --background-color: #0f172a;
    --card-background: #1e293b;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --border-color: #334155;
    --glass-bg: rgba(0, 0, 0, 0.1);
    --glass-border: rgba(255, 255, 255, 0.1);
  }
  
  .content {
    background: rgba(30, 41, 59, 0.95);
  }
  
  .section-nav {
    background: rgba(30, 41, 59, 0.9);
  }
  
  .modal-content {
    background: rgba(30, 41, 59, 0.95);
  }
}

/* 14. MEJORAS EN PERFORMANCE */
.content-card,
.btn,
.section-btn,
.modal-content {
  will-change: transform;
}

.content-card:hover,
.btn:hover,
.section-btn:hover {
  will-change: auto;
}

/* 15. EFECTOS ADICIONALES PARA INTERACTIVIDAD */
.admin-list-item {
  transition: all var(--transition-normal);
  border-left: 3px solid transparent;
}

.admin-list-item:hover {
  background: linear-gradient(90deg, rgba(37, 99, 235, 0.05), var(--background-color));
  border-left-color: var(--primary-color);
  transform: translateX(5px);
}

.stat-card {
  transition: all var(--transition-normal);
  border-top: 3px solid transparent;
}

.stat-card:hover {
  border-top-color: var(--primary-color);
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}