/* MITS Cloud Drag and Drop Styles */

.drag-drop-zone {
  position: relative;
  transition: all 0.2s ease-in-out;
}

.drag-drop-zone.drag-over {
  background-color: #eff6ff !important;
  border: 2px dashed #3b82f6 !important;
  border-radius: 0.5rem;
  transform: scale(1.02);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.15);
}

.drag-drop-zone.drag-over::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(45deg, transparent 49%, #3b82f6 49%, #3b82f6 51%, transparent 51%),
              linear-gradient(-45deg, transparent 49%, #3b82f6 49%, #3b82f6 51%, transparent 51%);
  background-size: 20px 20px;
  background-position: 0 0, 0 10px;
  opacity: 0.1;
  border-radius: 0.5rem;
  pointer-events: none;
}

.upload-zone {
  min-height: 200px;
  border: 2px dashed transparent;
  transition: all 0.3s ease;
}

.upload-zone:hover {
  border-color: #e5e7eb;
  background-color: #f9fafb;
}

.upload-area {
  min-height: 300px;
  position: relative;
}

.upload-area.drag-over {
  background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
  border: 2px dashed #3b82f6;
  border-radius: 0.75rem;
}

.upload-area.drag-over .empty-drop-zone {
  display: block !important;
}

.empty-drop-zone {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 10;
  pointer-events: none;
}

.empty-drop-zone.show {
  display: block !important;
}

/* File input drag and drop enhancement */
input[type="file"] {
  position: relative;
}

input[type="file"]::before {
  content: '📁 Choose files or drag and drop';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: #f8fafc;
  border: 2px dashed #cbd5e1;
  border-radius: 0.375rem;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #64748b;
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

input[type="file"]:hover::before {
  border-color: #3b82f6;
  background-color: #eff6ff;
  color: #1e40af;
}

input[type="file"]:focus::before {
  outline: 2px solid #3b82f6;
  outline-offset: 2px;
}

/* Progress indicator styles */
#upload-progress {
  animation: slideInRight 0.3s ease-out;
}

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

/* Drag overlay styles */
.drag-overlay {
  backdrop-filter: blur(2px);
  animation: fadeIn 0.2s ease-out;
}

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

/* Folder drag and drop for organization */
.folder-item {
  transition: all 0.2s ease;
  cursor: move;
  position: relative;
}

.folder-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.folder-item.dragging {
  opacity: 0.5;
  transform: rotate(5deg);
  z-index: 1000;
}

.folder-item.dragging::after {
  content: '';
  position: absolute;
  top: -4px;
  left: -4px;
  right: -4px;
  bottom: -4px;
  border: 2px dashed #3b82f6;
  border-radius: 0.5rem;
  background: rgba(59, 130, 246, 0.1);
  pointer-events: none;
}

.drop-target {
  border: 2px dashed #10b981;
  background-color: #ecfdf5;
  border-radius: 0.5rem;
  transition: all 0.2s ease;
  position: relative;
}

.drop-target.drag-over {
  border-color: #059669;
  background-color: #d1fae5;
  transform: scale(1.05);
  box-shadow: 0 8px 25px rgba(16, 185, 129, 0.3);
}

.drop-target.drag-over::before {
  content: 'Drop here';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(16, 185, 129, 0.9);
  color: white;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
  z-index: 10;
  pointer-events: none;
}

/* File item drag and drop enhancements */
.file-item {
  transition: all 0.2s ease;
  cursor: move;
  position: relative;
}

.file-item:hover {
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.file-item.dragging {
  opacity: 0.6;
  transform: rotate(2deg) scale(1.05);
  z-index: 1000;
}

.file-item.dragging::after {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  border: 2px dashed #6366f1;
  border-radius: 0.5rem;
  background: rgba(99, 102, 241, 0.1);
  pointer-events: none;
}

/* Grid-specific drag and drop styles */
.drive-grid {
  position: relative;
  min-height: 200px;
}

.drive-grid.drag-over {
  background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
  border: 2px dashed #3b82f6;
  border-radius: 0.75rem;
}

.drive-grid.drag-over::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: repeating-linear-gradient(
    45deg,
    transparent,
    transparent 10px,
    rgba(59, 130, 246, 0.1) 10px,
    rgba(59, 130, 246, 0.1) 20px
  );
  border-radius: 0.75rem;
  pointer-events: none;
}

.drive-grid.drag-over .empty-drop-zone {
  display: block !important;
  animation: pulse 1s infinite;
}

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

/* Drop zone indicators */
.drop-zone-indicator {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border: 2px dashed #3b82f6;
  border-radius: 0.5rem;
  background: rgba(59, 130, 246, 0.05);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.drop-zone-indicator.active {
  opacity: 1;
}

/* Sortable grid items */
.grid-item-sortable {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.grid-item-sortable.drag-over {
  transform: translateY(-8px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
}

.grid-item-sortable.drag-over::before {
  content: '';
  position: absolute;
  top: -4px;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #3b82f6, #8b5cf6);
  border-radius: 2px;
}

/* File type indicators */
.file-icon {
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.5rem;
  font-size: 1.25rem;
  font-weight: 600;
  color: #374151;
  background: linear-gradient(135deg, #f3f4f6 0%, #e5e7eb 100%);
  transition: all 0.2s ease;
}

.file-icon:hover {
  transform: scale(1.1);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .drag-drop-zone.drag-over {
    transform: none;
  }
  
  .upload-zone {
    min-height: 150px;
  }
  
  .upload-area {
    min-height: 200px;
  }
}

/* Accessibility improvements */
.drag-drop-zone:focus-within {
  outline: 2px solid #3b82f6;
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .drag-drop-zone.drag-over {
    border-color: #000;
    background-color: #fff;
  }
  
  .file-icon {
    border: 1px solid #000;
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  .drag-drop-zone,
  .upload-zone,
  .upload-area,
  .file-icon,
  .folder-item {
    transition: none;
  }
  
  .drag-drop-zone.drag-over {
    transform: none;
  }
}

/* Multi-select styles */
.file-item.selected {
  background-color: #3b82f6;
  color: white;
  border: 2px solid #1d4ed8;
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.3);
  border-radius: 0.5rem;
}

.file-item.selected .text-gray-600 {
  color: #e5e7eb !important;
}

.file-item.selected .text-gray-500 {
  color: #d1d5db !important;
}

.file-item.selected .text-slate-600 {
  color: #e5e7eb !important;
}

.file-item.selected .text-slate-500 {
  color: #d1d5db !important;
}