/* FileUpload Component Styles */
.file-upload {
  width: 100%;
  margin: 20px 0;
}

/* Drop Zone */
.drop-zone {
  border: 2px dashed #007bff;
  border-radius: 12px;
  padding: 40px 20px;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
  background: #f8f9fa;
  position: relative;
  min-height: 150px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.drop-zone:hover {
  border-color: #0056b3;
  background: #e3f2fd;
  transform: translateY(-2px);
}

.drop-zone.drag-over {
  border-color: #28a745;
  background: #d4edda;
  border-style: solid;
}

.drop-zone.disabled {
  opacity: 0.6;
  cursor: not-allowed;
  background: #e9ecef;
  border-color: #ced4da;
}

.drop-zone.disabled:hover {
  transform: none;
  border-color: #ced4da;
  background: #e9ecef;
}

.drop-zone-content {
  pointer-events: none;
}

.upload-icon {
  font-size: 3em;
  margin-bottom: 15px;
  opacity: 0.7;
}

.upload-text {
  font-size: 1.1em;
  font-weight: 600;
  color: #333;
  margin: 0 0 8px 0;
}

.upload-hint {
  font-size: 0.9em;
  color: #666;
  margin: 0;
}

/* Error Messages */
.upload-errors {
  margin-top: 15px;
}

.error-message {
  background: #f8d7da;
  color: #721c24;
  border: 1px solid #f5c6cb;
  border-radius: 6px;
  padding: 8px 12px;
  margin-bottom: 8px;
  font-size: 0.9em;
}

/* File Previews */
.file-previews {
  margin-top: 20px;
  border-top: 1px solid #e0e0e0;
  padding-top: 20px;
}

.preview-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 15px;
}

.preview-header h4 {
  margin: 0;
  color: #333;
  font-size: 1.1em;
}

.clear-all-btn {
  background: #dc3545;
  color: white;
  border: none;
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 0.9em;
  cursor: pointer;
  transition: all 0.3s ease;
}

.clear-all-btn:hover:not(:disabled) {
  background: #c82333;
  transform: translateY(-1px);
}

.clear-all-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* Preview Grid */
.preview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 15px;
}

.file-preview {
  background: white;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  overflow: hidden;
  transition: all 0.3s ease;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.file-preview:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.preview-image {
  position: relative;
  width: 100%;
  height: 150px;
  background: #f8f9fa;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.preview-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.preview-image:hover img {
  transform: scale(1.05);
}

.remove-file-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background: rgba(220, 53, 69, 0.9);
  color: white;
  border: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  font-size: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  opacity: 0;
}

.file-preview:hover .remove-file-btn {
  opacity: 1;
}

.remove-file-btn:hover:not(:disabled) {
  background: rgba(200, 35, 51, 0.9);
  transform: scale(1.1);
}

.remove-file-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
}

.file-info {
  padding: 12px;
  text-align: left;
}

.file-name {
  font-weight: 600;
  color: #333;
  font-size: 0.9em;
  margin-bottom: 4px;
  word-break: break-word;
}

.file-size {
  color: #666;
  font-size: 0.8em;
}

/* Progress Bar (for future use) */
.upload-progress {
  margin-top: 15px;
  background: #e9ecef;
  border-radius: 10px;
  overflow: hidden;
  height: 8px;
}

.upload-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, #007bff, #0056b3);
  transition: width 0.3s ease;
  border-radius: 10px;
}

/* Responsive Design */
@media (max-width: 768px) {
  .drop-zone {
    padding: 30px 15px;
    min-height: 120px;
  }
  
  .upload-icon {
    font-size: 2.5em;
    margin-bottom: 10px;
  }
  
  .upload-text {
    font-size: 1em;
  }
  
  .upload-hint {
    font-size: 0.8em;
  }
  
  .preview-grid {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 10px;
  }
  
  .preview-image {
    height: 120px;
  }
  
  .preview-header {
    flex-direction: column;
    gap: 10px;
    align-items: stretch;
  }
  
  .clear-all-btn {
    align-self: center;
    width: fit-content;
  }
}

@media (max-width: 480px) {
  .preview-grid {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  }
  
  .file-info {
    padding: 8px;
  }
  
  .file-name {
    font-size: 0.8em;
  }
  
  .file-size {
    font-size: 0.75em;
  }
}