.drag-drop-zone {
  border: 2px dashed #ccc;
  border-radius: 8px;
  padding: 2rem;
  text-align: center;
  background: #f8f9fa;
  transition: all 0.3s ease;
  cursor: pointer;
  outline: none;
  user-select: none;
}

.drag-drop-zone:hover,
.drag-drop-zone:focus {
  border-color: #0d6efd;
  background: #e9ecef;
}

.drag-drop-zone.drag-over {
  border-color: #0d6efd;
  background: #e9ecef;
  transform: scale(1.02);
}

.drag-drop-zone .icon {
  font-size: 2rem;
  margin-bottom: 1rem;
  color: #6c757d;
}

.drag-drop-zone .text {
  margin-bottom: 1rem;
}

.drag-drop-zone .btn {
  pointer-events: none;
}

.file-preview {
  margin-top: 1rem;
  padding: 1rem;
  background: #fff;
  border-radius: 4px;
  border: 1px solid #dee2e6;
}

.progress {
  height: 25px;
  background-color: #f8f9fa;
  border: 1px solid #dee2e6;
  border-radius: 4px;
  overflow: hidden;
}

.progress-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 0.875rem;
  font-weight: 600;
  transition: width 0.3s ease;
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}