.scan-preview {
  max-width: 300px;
  max-height: 400px;
  border: 2px solid #ddd;
  border-radius: 8px;
  margin: 10px 0;
}

.filter-buttons {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin: 15px 0;
}

.filter-btn {
  padding: 8px 16px;
  border: 1px solid #ddd;
  background: white;
  border-radius: 20px;
  cursor: pointer;
}

.filter-btn.active {
  background: #007bff;
  color: white;
}

#video {
  width: 100%;
  max-width: 400px;
  border-radius: 8px;
}