.merge-upload-progress {
  margin-top: 10px;
  border: 1px solid #dbe3f3;
  border-radius: 10px;
  background: #f8fbff;
  padding: 8px 10px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: #334155;
  font-size: 13px;
}

.merge-upload-progress.hidden {
  display: none !important;
}

.spinner {
  width: 14px;
  height: 14px;
  border: 2px solid #cbd5e1;
  border-top-color: #0b5fff;
  border-radius: 999px;
  animation: mergeSpin 0.8s linear infinite;
  flex-shrink: 0;
}

@keyframes mergeSpin {
  to {
    transform: rotate(360deg);
  }
}

.merge-stats {
  margin-top: 12px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.merge-stats .stat-card {
  background: #f8fbff;
  border: 1px solid #dbe7ff;
  border-radius: 12px;
  padding: 10px 12px;
}

.merge-stats .stat-label {
  display: block;
  font-size: 12px;
  color: #64748b;
  margin-bottom: 4px;
}

.merge-stats .stat-card strong {
  font-size: 16px;
  font-weight: 700;
  color: #0f172a;
}

.merge-file-list {
  grid-template-columns: 1fr;
  gap: 10px;
}

.merge-file-item {
  border-radius: 12px;
  cursor: default;
  transition: border-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}

.merge-file-name-wrap {
  min-width: 0;
  display: grid;
  gap: 3px;
}

.merge-file-name-wrap .file-name {
  margin: 0;
}

.merge-file-meta {
  color: #64748b;
  font-size: 12px;
}

.merge-file-actions {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

@media (max-width: 900px) {
  .merge-stats {
    grid-template-columns: 1fr;
  }
}