/* Caja de Herramientas Styles */

/* Hero Section */
.caja-hero {
  background: var(--color-amarillo);
  color: var(--text-primary);
  padding: var(--spacing-20) 0 var(--spacing-16);
  position: relative;
  overflow: hidden;
  padding-top: calc(var(--spacing-20) + 80px); /* Add space for fixed header */
}

.caja-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  opacity: 0.05;
  z-index: 1;
}

.caja-hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  margin-bottom: var(--spacing-4);
  font-size: var(--font-size-sm);
  opacity: 0.8;
}

.breadcrumb a {
  color: var(--text-primary);
  text-decoration: none;
  transition: var(--transition-normal);
  font-weight: var(--font-weight-medium);
}

.breadcrumb a:hover {
  opacity: 0.7;
  text-decoration: underline;
}

.breadcrumb-separator {
  opacity: 0.6;
  color: var(--text-primary);
}

.breadcrumb-current {
  opacity: 0.7;
  color: var(--text-primary);
  font-weight: var(--font-weight-semibold);
}

.caja-hero-title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-4);
  line-height: var(--line-height-tight);
  color: var(--text-primary);
}

.caja-hero-subtitle {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  opacity: 0.8;
  max-width: 600px;
  color: var(--color-principal);
  font-weight: var(--font-weight-medium);
}

/* Tools Section */
.tools-section {
  padding: var(--spacing-16) 0;
  background: var(--bg-gray-50);
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-8);
}

/* Tool Cards */
.tool-card {
  background: var(--bg-white);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  transition: all var(--transition-normal);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  position: relative;
}

.tool-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--color-principal);
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition-normal);
}

.tool-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-principal);
}

.tool-card:hover::before {
  transform: scaleX(1);
  background: var(--color-fucsia);
}

.tool-card-header {
  padding: var(--spacing-6) var(--spacing-6) var(--spacing-4);
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
}

.tool-icon {
  width: 60px;
  height: 60px;
  background: var(--color-principal);
  border-radius: var(--border-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-white);
  font-size: var(--font-size-xl);
  flex-shrink: 0;
  transition: var(--transition-normal);
}

.tool-card:hover .tool-icon {
  transform: scale(1.1);
  background: var(--color-fucsia);
}

.tool-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  margin: 0;
  line-height: var(--line-height-tight);
}

.tool-card-body {
  padding: 0 var(--spacing-6) var(--spacing-4);
  flex-grow: 1;
}

.tool-description {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  margin: 0;
}

.tool-card-footer {
  padding: var(--spacing-4) var(--spacing-6) var(--spacing-6);
  margin-top: auto;
}

.tool-download-btn {
  width: 100%;
  background: var(--color-principal);
  color: var(--text-white);
  border: none;
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-3) var(--spacing-6);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: all var(--transition-normal);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
}

.tool-download-btn:hover {
  background: var(--color-fucsia);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(233, 30, 99, 0.3);
}

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

/* Info Section */
.info-section {
  padding: var(--spacing-12) 0;
}

.info-card {
  background: var(--color-celeste);
  border-radius: var(--border-radius-xl);
  padding: var(--spacing-8);
  display: flex;
  gap: var(--spacing-6);
  align-items: flex-start;
  max-width: 900px;
  margin: 0 auto;
  border: 1px solid rgba(73, 61, 134, 0.1);
}

.info-icon {
  width: 60px;
  height: 60px;
  background: var(--color-principal);
  border-radius: var(--border-radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-white);
  font-size: var(--font-size-xl);
  flex-shrink: 0;
}

.info-content {
  flex-grow: 1;
}

.info-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-principal);
  margin-bottom: var(--spacing-3);
  margin-top: 0;
}

.info-text {
  font-size: var(--font-size-base);
  color: var(--text-primary);
  line-height: var(--line-height-relaxed);
  margin: 0;
}

/* Modal Styles */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(5px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  padding: var(--spacing-4);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background: var(--bg-white);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-2xl);
  max-width: 600px;
  width: 100%;
  max-height: 80vh;
  overflow-y: auto;
  transform: scale(0.9) translateY(50px);
  transition: all var(--transition-normal);
}

.modal-overlay.active .modal-content {
  transform: scale(1) translateY(0);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-6);
  border-bottom: 1px solid var(--border-color);
}

.modal-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  margin: 0;
}

.modal-close {
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: var(--font-size-lg);
  cursor: pointer;
  border-radius: var(--border-radius-full);
  transition: var(--transition-normal);
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close:hover {
  background: var(--bg-gray-100);
  color: var(--text-primary);
}

.modal-body {
  padding: var(--spacing-6);
}

.modal-description {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-6);
}

.download-options {
  display: grid;
  gap: var(--spacing-3);
}

.download-option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-4);
  background: var(--bg-gray-50);
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--border-color);
  transition: var(--transition-normal);
}

.download-option:hover {
  background: var(--color-celeste);
  border-color: var(--color-principal);
}

.download-option-info {
  flex-grow: 1;
}

.download-option-name {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-1);
}

.download-option-details {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.download-option-btn {
  background: var(--color-principal);
  color: var(--text-white);
  border: none;
  border-radius: var(--border-radius-md);
  padding: var(--spacing-2) var(--spacing-4);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: var(--transition-normal);
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
}

.download-option-btn:hover {
  background: var(--color-fucsia);
  transform: translateY(-1px);
}

/* Responsive Design */
@media (max-width: 768px) {
  .caja-hero {
    padding-top: calc(var(--spacing-16) + 60px); /* Adjust for mobile header */
    padding-bottom: var(--spacing-8);
  }

  .caja-hero-title {
    font-size: var(--font-size-3xl);
  }

  .caja-hero-subtitle {
    font-size: var(--font-size-base);
  }

  .tools-section {
    padding: var(--spacing-12) 0;
  }

  .tools-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
  }

  .tool-card-header {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-3);
  }

  .tool-icon {
    width: 50px;
    height: 50px;
    font-size: var(--font-size-lg);
  }

  .tool-title {
    font-size: var(--font-size-lg);
  }

  .info-card {
    flex-direction: column;
    gap: var(--spacing-4);
    padding: var(--spacing-6);
  }

  .info-icon {
    width: 50px;
    height: 50px;
    font-size: var(--font-size-lg);
    align-self: center;
  }

  .modal-content {
    margin: var(--spacing-4);
    max-height: calc(100vh - 2rem);
  }
}

@media (max-width: 480px) {
  .breadcrumb {
    flex-wrap: wrap;
  }

  .tool-card-header {
    padding: var(--spacing-4);
  }

  .tool-card-body {
    padding: 0 var(--spacing-4) var(--spacing-3);
  }

  .tool-card-footer {
    padding: var(--spacing-3) var(--spacing-4) var(--spacing-4);
  }
}

/* Animation for cards */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.tool-card {
  animation: fadeInUp 0.6s ease-out forwards;
}

.tool-card:nth-child(1) {
  animation-delay: 0.1s;
}
.tool-card:nth-child(2) {
  animation-delay: 0.2s;
}
.tool-card:nth-child(3) {
  animation-delay: 0.3s;
}
.tool-card:nth-child(4) {
  animation-delay: 0.4s;
}
.tool-card:nth-child(5) {
  animation-delay: 0.5s;
}
.tool-card:nth-child(6) {
  animation-delay: 0.6s;
}
.tool-card:nth-child(7) {
  animation-delay: 0.7s;
}
.tool-card:nth-child(8) {
  animation-delay: 0.8s;
}
.tool-card:nth-child(9) {
  animation-delay: 0.9s;
}

/* Estilos para la estructura de carpetas */
.folder-structure {
  margin-top: 20px;
}

.folder-item {
  display: flex;
  align-items: center;
  padding: 12px 15px;
  background: #f8f9fa;
  border: 1px solid #e9ecef;
  border-radius: 8px;
  margin-bottom: 10px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.folder-item:hover {
  background: #e9ecef;
  border-color: var(--color-principal);
}

.folder-icon {
  color: #ffa500;
  margin-right: 10px;
  font-size: 16px;
}

.folder-name {
  flex: 1;
  font-weight: 600;
  color: #333;
}

.folder-chevron {
  color: #666;
  font-size: 12px;
  transition: transform 0.3s ease;
}

.folder-item.expanded .folder-chevron {
  transform: rotate(180deg);
}

.folder-content {
  margin-left: 20px;
  margin-bottom: 15px;
  border-left: 2px solid #e9ecef;
  padding-left: 20px;
  display: none;
}

.folder-content.show {
  display: block;
  animation: slideDown 0.3s ease;
}

@keyframes slideDown {
  from {
    opacity: 0;
    max-height: 0;
  }
  to {
    opacity: 1;
    max-height: 500px;
  }
}

.file-item {
  display: flex;
  align-items: center;
  padding: 10px 12px;
  background: white;
  border: 1px solid #dee2e6;
  border-radius: 6px;
  margin-bottom: 8px;
  transition: all 0.3s ease;
}

.file-item:hover {
  background: #f8f9fa;
  border-color: var(--color-principal);
}

.file-icon {
  margin-right: 10px;
  font-size: 14px;
}

.file-icon.fa-file-powerpoint {
  color: #d04423;
}

.file-icon.fa-file-image {
  color: #28a745;
}

.file-icon.fa-font {
  color: #6f42c1;
}

.file-icon.fa-file-pdf {
  color: #dc3545;
}

.file-icon.fa-file-video {
  color: #007bff;
}
.file-name {
  flex: 1;
  font-size: 14px;
  color: #333;
}

.file-actions {
  display: flex;
  gap: 8px;
}

.preview-btn,
.download-btn {
  padding: 6px 10px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 12px;
  transition: all 0.3s ease;
}

.preview-btn {
  background: #17a2b8;
  color: white;
}

.preview-btn:hover {
  background: #138496;
}

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

.download-btn:hover {
  background: var(--color-fucsia);
}

/* Subcarpetas */
.subfolder-item {
  display: flex;
  align-items: center;
  padding: 10px 12px;
  background: #f1f3f4;
  border: 1px solid #d0d7de;
  border-radius: 6px;
  margin-bottom: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.subfolder-item:hover {
  background: #e6e8ea;
  border-color: var(--color-principal);
}

.subfolder-icon {
  color: #ffa500;
  margin-right: 10px;
  font-size: 14px;
}

.subfolder-name {
  flex: 1;
  font-weight: 500;
  color: #333;
  font-size: 14px;
}

.subfolder-chevron {
  color: #666;
  font-size: 10px;
  transition: transform 0.3s ease;
}

.subfolder-item.expanded .subfolder-chevron {
  transform: rotate(180deg);
}

.subfolder-content {
  margin-left: 20px;
  margin-top: 8px;
  padding-left: 15px;
  border-left: 1px solid #d0d7de;
  display: none;
}

.subfolder-content.show {
  display: block;
  animation: slideDown 0.3s ease;
}

/* Mensaje de próximamente */
.coming-soon {
  padding: 20px;
  text-align: center;
  color: #6c757d;
  font-style: italic;
  background: #f8f9fa;
  border-radius: 6px;
  border: 1px dashed #dee2e6;
}

/* Modal de Vista Previa */
.preview-modal-content {
  max-width: 90vw;
  max-height: 90vh;
  width: auto;
}

.preview-modal-body {
  max-height: 70vh;
  overflow: auto;
}

#preview-content {
  text-align: center;
}

#preview-content img {
  max-width: 100%;
  max-height: 60vh;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.preview-info {
  margin-top: 15px;
  padding: 15px;
  background: #f8f9fa;
  border-radius: 8px;
  text-align: left;
}

.preview-info h4 {
  margin: 0 0 10px 0;
  color: #333;
  font-size: 16px;
}

.preview-info p {
  margin: 5px 0;
  color: #666;
  font-size: 14px;
}

.file-details {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px;
  margin-top: 10px;
}

.file-details strong {
  color: #333;
}

.modal-close-btn {
  background: #6c757d;
  color: white;
  border: none;
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-2) var(--spacing-4);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: all var(--transition-normal);
  margin-left: var(--spacing-3);
}

.modal-close-btn:hover {
  background: #5a6268;
}

/* Responsive para móviles - estructura de carpetas */
@media (max-width: 768px) {
  .folder-structure {
    margin-top: 15px;
  }

  .folder-item {
    padding: 10px 12px;
  }

  .file-item {
    padding: 8px 10px;
  }

  .file-name {
    font-size: 13px;
  }

  .file-actions {
    gap: 6px;
  }

  .preview-btn,
  .download-btn {
    padding: 5px 8px;
    font-size: 11px;
  }

  .folder-content {
    margin-left: 15px;
    padding-left: 15px;
  }

  .subfolder-content {
    margin-left: 15px;
    padding-left: 12px;
  }

  .preview-modal-content {
    max-width: 95vw;
    margin: 10px;
  }
}

/* Estados de carga */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  color: #666;
}

.loading::after {
  content: "";
  width: 20px;
  height: 20px;
  border: 2px solid #f3f3f3;
  border-top: 2px solid var(--color-principal);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-left: 10px;
}

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

/* Mejoras para accesibilidad */
.folder-item:focus,
.subfolder-item:focus,
.file-item:focus {
  outline: 2px solid var(--color-principal);
  outline-offset: 2px;
}

.preview-btn:focus,
.download-btn:focus {
  outline: 2px solid #ffffff;
  outline-offset: 2px;
}

/* Modal para Explorar Carpetas */
.folder-modal-content {
  max-width: 800px;
  width: 95vw;
  max-height: 85vh;
}

.folder-modal-body {
  max-height: 70vh;
  overflow-y: auto;
  padding: var(--spacing-6);
}

/* Asegurar que la estructura de carpetas en el modal se vea bien */
.folder-modal-body .folder-structure {
  margin-top: 0;
}

.folder-modal-body .folder-item {
  border: 1px solid #e9ecef;
  background: #f8f9fa;
}

.folder-modal-body .folder-item:hover {
  background: #e9ecef;
  border-color: var(--color-principal);
}

.folder-modal-body .file-item {
  background: white;
  border: 1px solid #dee2e6;
}

.folder-modal-body .file-item:hover {
  background: #f8f9fa;
  border-color: var(--color-principal);
}

/* Mejoras para modal de vista previa - Diseño moderno y profesional */
.preview-modal-content {
  max-width: 1000px;
  width: 90vw;
  max-height: 95vh;
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
  overflow: hidden;
  background: white;
  border: none;
}

.preview-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-6) var(--spacing-8);
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  position: relative;
}

.preview-modal-header::before {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(
    90deg,
    var(--color-principal),
    var(--color-amarillo)
  );
}

.preview-modal-header h5 {
  margin: 0;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-texto-principal);
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
}

.preview-modal-header h5::before {
  content: "📄";
  font-size: 1.2rem;
}

.preview-modal-header .close-btn {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: #6c757d;
  cursor: pointer;
  padding: 8px;
  border-radius: 50%;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
}

.preview-modal-header .close-btn:hover {
  background: rgba(108, 117, 125, 0.1);
  color: var(--color-principal);
  transform: rotate(90deg);
}

.preview-modal-body {
  padding: var(--spacing-8);
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 500px;
  background: #fafbfc;
  position: relative;
}

.preview-modal-body::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: linear-gradient(
    90deg,
    var(--color-principal),
    var(--color-amarillo)
  );
  border-radius: 2px;
}

.image-preview-container {
  text-align: center;
  padding: var(--spacing-6);
  width: 100%;
  background: white;
  border-radius: 12px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
  border: 1px solid rgba(0, 0, 0, 0.05);
  position: relative;
  overflow: hidden;
}

.image-preview-container::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(
    90deg,
    var(--color-principal),
    var(--color-amarillo),
    var(--color-principal)
  );
}

.image-preview-container img {
  max-width: 100%;
  max-height: 60vh;
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
  border: 2px solid rgba(255, 255, 255, 0.8);
}

.image-preview-container img:hover {
  transform: scale(1.02);
}

.preview-error {
  color: #dc3545;
  padding: var(--spacing-8);
  text-align: center;
  background: #f8d7da;
  border: 1px solid #f5c6cb;
  border-radius: 8px;
  margin: var(--spacing-4);
}

.preview-error i {
  font-size: 2rem;
  margin-bottom: var(--spacing-4);
  display: block;
}

.preview-modal-footer {
  display: flex;
  justify-content: center;
  gap: var(--spacing-4);
  padding: var(--spacing-6) var(--spacing-8);
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
  border-top: 1px solid rgba(0, 0, 0, 0.08);
}

.preview-modal-footer .btn {
  min-width: 140px;
  padding: 12px 24px;
  font-weight: 600;
  border-radius: 8px;
  transition: all 0.3s ease;
  border: 2px solid;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.preview-modal-footer .btn i {
  font-size: 1rem;
}

.preview-modal-footer .btn-primary {
  background: linear-gradient(135deg, var(--color-principal) 0%, #1a472a 100%);
  border-color: var(--color-principal);
  color: white;
  box-shadow: 0 4px 15px rgba(46, 125, 50, 0.3);
}

.preview-modal-footer .btn-primary:hover {
  background: linear-gradient(135deg, var(--color-amarillo) 0%, #ffc107 100%);
  border-color: var(--color-amarillo);
  color: var(--color-principal);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(255, 193, 7, 0.4);
}

.preview-modal-footer .btn-secondary {
  background: linear-gradient(135deg, #6c757d 0%, #495057 100%);
  border-color: #6c757d;
  color: white;
  box-shadow: 0 4px 15px rgba(108, 117, 125, 0.3);
}

.preview-modal-footer .btn-secondary:hover {
  background: linear-gradient(135deg, #5a6268 0%, #343a40 100%);
  border-color: #5a6268;
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(108, 117, 125, 0.4);
}

/* Estilos para preview de archivos no imagen */
.file-info-preview {
  text-align: center;
  padding: var(--spacing-8);
  background: white;
  border-radius: 12px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
  border: 1px solid rgba(0, 0, 0, 0.05);
  margin-bottom: var(--spacing-6);
  position: relative;
  overflow: hidden;
}

.file-info-preview::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(
    90deg,
    var(--color-principal),
    var(--color-amarillo),
    var(--color-principal)
  );
}

.file-icon-large {
  margin-bottom: var(--spacing-4);
  padding: var(--spacing-6);
  background: linear-gradient(135deg, #f8f9fa, #e9ecef);
  border-radius: 50%;
  width: 120px;
  height: 120px;
  margin: 0 auto var(--spacing-4);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.file-details {
  background: #f8f9fa;
  padding: var(--spacing-3);
  border-radius: 8px;
  margin: var(--spacing-4) 0;
  border: 1px solid #e9ecef;
}

.file-format {
  font-weight: 600;
  color: var(--color-principal);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.preview-image {
  max-width: 100%;
  max-height: 500px;
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
  object-fit: contain;
}

.preview-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 300px;
  color: #6c757d;
  text-align: center;
}

.preview-placeholder i {
  font-size: 4rem;
  margin-bottom: var(--spacing-4);
  color: #adb5bd;
}

.preview-placeholder h4 {
  margin-bottom: var(--spacing-2);
  font-size: 1.5rem;
  color: #495057;
}

.preview-placeholder p {
  margin: 0;
  font-size: 1rem;
  line-height: 1.5;
}

/* Responsive para modal de carpetas */
@media (max-width: 768px) {
  .folder-modal-content {
    width: 98vw;
    max-height: 90vh;
    margin: 1vh 1vw;
  }

  .folder-modal-body {
    padding: var(--spacing-4);
    max-height: 75vh;
  }

  .preview-modal-content {
    width: 98vw;
    max-height: 95vh;
  }

  .preview-modal-header,
  .preview-modal-footer {
    padding: var(--spacing-3) var(--spacing-4);
  }

  .preview-modal-body {
    padding: var(--spacing-4);
    min-height: 300px;
  }

  .preview-modal-footer {
    flex-direction: column;
    gap: var(--spacing-2);
  }

  .preview-modal-footer .btn {
    width: 100%;
    min-width: auto;
  }

  .preview-image {
    max-height: 400px;
  }

  /* Mejoras adicionales para modal de preview en móviles */
  .preview-modal-header h5 {
    font-size: 1.1rem;
  }

  .file-icon-large {
    width: 80px;
    height: 80px;
  }

  .file-icon-large i {
    font-size: 2.5rem !important;
  }

  .image-preview-container {
    padding: var(--spacing-4);
  }

  .image-preview-container img {
    max-height: 45vh;
  }

  .preview-modal-footer .btn {
    padding: 10px 16px;
    font-size: 0.9rem;
  }
}

/* Animaciones adicionales para el modal mejorado */
@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(-50px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.modal-overlay.active .preview-modal-content {
  animation: modalSlideIn 0.3s ease-out;
}

.preview-modal-header .close-btn {
  transition: all 0.3s ease;
}

.preview-modal-header .close-btn:hover {
  background: rgba(220, 53, 69, 0.1);
  color: #dc3545;
}