.diff-output {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.75;
  padding: 14px 16px;
  min-height: 200px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-all;
  counter-reset: diff-line;
}
.diff-line {
  display: flex;
  gap: 0;
  border-radius: 2px;
  margin: 0 -4px;
  padding: 0 4px;
}
.diff-line__marker {
  width: 22px;
  flex-shrink: 0;
  text-align: center;
  user-select: none;
  color: var(--text-muted);
  opacity: 0.6;
}
.diff-line__content {
  flex: 1;
  white-space: pre-wrap;
  word-break: break-all;
}
.diff-line--add {
  background: rgba(34, 197, 94, 0.1);
  color: #4ade80;
}
.diff-line--add .diff-line__marker { color: #4ade80; }
.diff-line--del {
  background: rgba(239, 68, 68, 0.1);
  color: #f87171;
}
.diff-line--del .diff-line__marker { color: #f87171; }
.diff-line--eq {
  color: var(--text-muted);
}

[data-theme="light"] .diff-line--add { background: rgba(34, 197, 94, 0.12); color: #16a34a; }
[data-theme="light"] .diff-line--add .diff-line__marker { color: #16a34a; }
[data-theme="light"] .diff-line--del { background: rgba(239, 68, 68, 0.12); color: #dc2626; }
[data-theme="light"] .diff-line--del .diff-line__marker { color: #dc2626; }

.diff-stats {
  display: flex;
  gap: 16px;
  padding: 10px 16px;
  border-top: 1px solid var(--border);
  background: var(--bg-elevated);
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: 0 0 var(--r-2xl) var(--r-2xl);
}
.diff-stats span { display: flex; align-items: center; gap: 4px; }