/* ── Diff View ── */
.diff-container {
  text-align: left;
  max-height: 500px;
  overflow-y: auto;
  border: 1px solid var(--wiki-border);
  border-radius: 8px;
  background: var(--wiki-bg);
}

.diff-table {
  width: 100%;
  border-collapse: collapse;
  font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 0.82rem;
  line-height: 1.5;
}

.diff-table tr.diff-add {
  background: var(--wiki-diff-add-bg);
  color: var(--wiki-diff-add-text);
}

.diff-table tr.diff-del {
  background: var(--wiki-diff-del-bg);
  color: var(--wiki-diff-del-text);
}

.diff-table tr.diff-same {
  background: transparent;
  color: var(--wiki-text-muted);
}

.diff-table td {
  padding: 1px 8px;
  border: none;
  vertical-align: top;
}

.diff-table td.diff-prefix {
  width: 20px;
  text-align: center;
  user-select: none;
  color: var(--wiki-text-muted);
  font-weight: 700;
  opacity: 0.7;
}

.diff-table tr.diff-add td.diff-prefix {
  color: var(--wiki-success);
  opacity: 1;
}

.diff-table tr.diff-del td.diff-prefix {
  color: var(--wiki-danger);
  opacity: 1;
}

.diff-table td.diff-line {
  white-space: pre-wrap;
  word-break: break-all;
}

.diff-empty {
  padding: 2rem;
  text-align: center;
  color: var(--wiki-text-muted);
  font-style: italic;
}

.diff-table tr.diff-skip {
  background: transparent;
}

.diff-table tr.diff-skip td.diff-prefix {
  color: var(--wiki-text-muted);
  opacity: 0.6;
  font-weight: 400;
}

.diff-table td.diff-skip-label {
  color: var(--wiki-text-muted);
  font-style: italic;
  font-size: 0.78rem;
  padding-top: 2px;
  padding-bottom: 2px;
}

/* ── Rich (rendered) Diff View — GitHub 의 md rich diff 와 유사 ── */
.diff-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  margin-bottom: 0.75rem;
}

.diff-mode-toggle {
  display: inline-flex;
}

.rich-diff-container {
  text-align: left;
  max-height: 70vh;
  overflow-y: auto;
  border: 1px solid var(--wiki-border);
  border-radius: 8px;
  background: var(--wiki-bg);
  padding: 0.75rem 1rem;
}

.rich-diff-block {
  padding: 0.35rem 0.75rem;
  border-left: 4px solid transparent;
  border-radius: 4px;
  margin: 0.25rem 0;
}

.rich-diff-block > *:first-child {
  margin-top: 0;
}

.rich-diff-block > *:last-child {
  margin-bottom: 0;
}

.rich-diff-block.rich-diff-add {
  background: var(--wiki-diff-add-bg);
  border-left-color: var(--wiki-success);
}

.rich-diff-block.rich-diff-del {
  background: var(--wiki-diff-del-bg);
  border-left-color: var(--wiki-danger);
  /* 줄긋기는 표/이미지 등에 어색하므로 사용하지 않고 배경/테두리로만 표시 */
  opacity: 0.92;
}

.rich-diff-block.rich-diff-same {
  border-left-color: var(--wiki-border);
  opacity: 0.85;
}