/* ═══════════════════════════════════════════════ */
/*  DIFF VIEWER                                    */
/* ═══════════════════════════════════════════════ */
#panel-changes > .card,
#panel-files > .card {
  border: none !important;
  border-radius: 0 !important;
  margin-bottom: 0 !important;
}

#panel-changes,
#panel-files {
  height: 100%;
}

#panel-changes > .card,
#panel-files > .card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  height: 100%;
}

.diff-controls {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-raised);
}

.toggle-group {
  display: flex;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  overflow: hidden;
}

.toggle-opt {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 500;
  padding: 5px 12px;
  border: none;
  background: none;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
}

.toggle-opt:not(:last-child) { border-right: 1px solid var(--border); }

.toggle-opt.active {
  background: var(--accent-dim);
  color: var(--accent);
}

.diff-layout {
  display: flex;
  flex: 1;
  min-height: 200px;
  overflow: hidden;
}

.diff-file-list {
  width: 260px;
  min-width: 140px;
  max-width: 50%;
  border-right: none;
  overflow: auto;
  background: var(--bg-raised);
  flex-shrink: 0;
  height: 100%;
}

.diff-resize-handle {
  width: 4px;
  cursor: col-resize;
  background: var(--border);
  flex-shrink: 0;
  transition: background 0.15s;
}

.diff-resize-handle:hover,
.diff-resize-handle.active {
  background: var(--accent);
}

.diff-file-list-header {
  padding: 10px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--bg-raised);
  z-index: 5;
}

.file-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  font-family: var(--font-mono);
  font-size: 0.73rem;
  cursor: pointer;
  color: var(--text-secondary);
  transition: var(--transition);
  border-left: 2px solid transparent;
}

.file-item:hover { background: var(--bg-hover); }
.file-item.active { background: var(--accent-dim); border-left-color: var(--accent); color: var(--text-primary); }

/* Ensure hover/active highlights span full scrollable width when scrolled */
.diff-file-list .file-item { white-space: nowrap; }
.diff-file-list .file-dir { white-space: nowrap; }

.file-stat {
  margin-left: auto;
  display: flex;
  gap: 4px;
  font-size: 0.68rem;
}

.file-stat-add { color: var(--success); }
.file-stat-del { color: var(--danger); }

.file-dir {
  padding: 7px 14px;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  user-select: none;
}

.file-dir .arrow {
  font-size: 10px;
  transition: transform var(--transition);
  display: inline-block;
}

.file-dir.collapsed .arrow { transform: rotate(-90deg); }
.file-dir.collapsed + .dir-children { display: none; }

/* padding-left set dynamically per depth level in JS */

.diff-content {
  flex: 1;
  overflow: auto;
  min-width: 0;
  position: relative;
}

#explorerContent {
  overflow: hidden;
}

/* ═══ File Explorer Content ═══ */
.explorer-file-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 16px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-primary);
  background: var(--bg-raised);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1;
}

.explorer-line-count {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-left: auto;
}

.explorer-file-body {
  overflow: auto;
  height: calc(100% - 36px);
}

.explorer-code-table {
  border-collapse: collapse;
  width: 100%;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.5;
}

.explorer-line-num {
  width: 1px;
  padding: 0 12px;
  text-align: right;
  color: var(--text-muted);
  user-select: none;
  white-space: nowrap;
  vertical-align: top;
  opacity: 0.5;
}

.explorer-line-code {
  padding: 0 16px;
  white-space: pre;
}

.explorer-code-table tr:hover {
  background: var(--bg-hover);
}

.monaco-body {
  overflow: hidden;
}

#monaco-editor-container {
  min-height: 400px;
}

#explorerContent .explorer-file-body.monaco-body {
  flex: 1;
  overflow: hidden;
}

.explorer-markdown {
  padding: 16px 24px;
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

.explorer-markdown h1, .explorer-markdown h2, .explorer-markdown h3 {
  color: var(--text-primary);
  margin-top: 1em;
}

.explorer-markdown code {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  background: var(--bg-raised);
  padding: 2px 6px;
  border-radius: 3px;
}

.explorer-markdown pre {
  background: var(--bg-raised);
  padding: 12px;
  border-radius: var(--radius-sm);
  overflow-x: auto;
}

.explorer-markdown pre code {
  background: none;
  padding: 0;
}


.diff-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--text-muted);
  font-size: 0.88rem;
}

/* ═══════════════════════════════════════════════ */
/*  diff2html overrides                            */
/* ═══════════════════════════════════════════════ */
.d2h-wrapper { font-family: var(--font-mono) !important; }
.d2h-wrapper .hljs { background: transparent !important; }
.d2h-file-header { display: none !important; }
.d2h-code-line, .d2h-code-side-line {
  font-family: var(--font-mono) !important;
  font-size: 0.72rem !important;
  line-height: 21px !important;
  padding-top: 0 !important;
  padding-bottom: 0 !important;
}

/* Fix: line numbers must scroll with content, not stay sticky */
/* font-size MUST match .d2h-code-line / .d2h-code-side-line (0.72rem)
   so both compute the same line-height and td heights match exactly */
/* High specificity to override diff2html CDN's display:inline-block */
.d2h-diff-table .d2h-code-linenumber,
.d2h-diff-table td.d2h-code-linenumber,
.d2h-diff-table .d2h-code-side-linenumber,
.d2h-diff-table td.d2h-code-side-linenumber {
  display: table-cell !important;
  position: relative !important;
  overflow: visible !important;
  line-height: 1.35 !important;
  padding: 0 6px !important;
  padding-top: 0 !important;
  padding-bottom: 0 !important;
  font-size: 0.72rem !important;
  border: none !important;
  vertical-align: middle !important;
}

/* Remove all borders from diff table cells to eliminate gaps */
.d2h-diff-table td {
  border: none !important;
}

.d2h-diff-tbody tr {
  border: none !important;
}

.d2h-diff-table {
  border-collapse: collapse !important;
  border-spacing: 0 !important;
  background: var(--bg-raised) !important;
}


/* Fix wrapper borders — diff2html default is white, use theme border color */
.d2h-file-wrapper {
  border-color: var(--border) !important;
}

/* Fix: word-level highlight suppression */
.d2h-ins .d2h-code-line-ctn ins,
.d2h-del .d2h-code-line-ctn del,
.d2h-ins .d2h-code-side-line-ctn ins,
.d2h-del .d2h-code-side-line-ctn del {
  background: none !important;
  text-decoration: none !important;
}

/* ─── DARK THEME ─── */
[data-theme="dark"] .d2h-wrapper {
  --d2h-bg-color: var(--bg-surface);
  --d2h-dark-color: var(--text-primary);
}
[data-theme="dark"] .d2h-file-diff { background: var(--bg-surface) !important; }
[data-theme="dark"] .d2h-code-linenumber,
[data-theme="dark"] .d2h-code-side-linenumber { background: transparent !important; color: var(--text-primary) !important; border: none !important; }
[data-theme="dark"] .d2h-code-line { color: var(--text-secondary) !important; }
[data-theme="dark"] .d2h-code-side-line { background: var(--bg-surface) !important; color: var(--text-secondary) !important; }
/* Inside ins/del cells, make the inner div transparent so the td's green/red shows through */
[data-theme="dark"] .d2h-ins .d2h-code-side-line,
[data-theme="dark"] .d2h-ins .d2h-code-line { background: transparent !important; }
[data-theme="dark"] .d2h-del .d2h-code-side-line,
[data-theme="dark"] .d2h-del .d2h-code-line { background: transparent !important; }
[data-theme="dark"] .d2h-ins { background: var(--diff-add-bg) !important; }
[data-theme="dark"] .d2h-del { background: var(--diff-del-bg) !important; }
[data-theme="dark"] .d2h-ins .d2h-code-line-ctn { color: var(--diff-add-text) !important; background: none !important; }
[data-theme="dark"] .d2h-del .d2h-code-line-ctn { color: var(--diff-del-text) !important; background: none !important; }
[data-theme="dark"] .d2h-ins .d2h-code-side-line-ctn { color: var(--diff-add-text) !important; background: none !important; }
[data-theme="dark"] .d2h-del .d2h-code-side-line-ctn { color: var(--diff-del-text) !important; background: none !important; }
/* Side-by-side mode line backgrounds */
[data-theme="dark"] .d2h-ins.d2h-code-side-line { background: var(--diff-add-bg) !important; }
[data-theme="dark"] .d2h-del.d2h-code-side-line { background: var(--diff-del-bg) !important; }
[data-theme="dark"] .d2h-info { background: var(--bg-raised) !important; color: var(--text-muted) !important; border-color: var(--border) !important; }
[data-theme="dark"] .d2h-emptyplaceholder { background: var(--bg-raised) !important; border: none !important; }
[data-theme="dark"] .d2h-code-side-emptyplaceholder { background: var(--bg-raised) !important; border: none !important; }
[data-theme="dark"] .d2h-file-side-diff { border: none !important; background: var(--bg-surface) !important; }
[data-theme="dark"] td.d2h-code-side-linenumber.d2h-ins,
[data-theme="dark"] td.d2h-code-linenumber.d2h-ins {
  background: #1e2d23 !important;
  color: #82a582 !important;
}
[data-theme="dark"] td.d2h-code-side-linenumber.d2h-del,
[data-theme="dark"] td.d2h-code-linenumber.d2h-del {
  background: #301e22 !important;
  color: #a58282 !important;
}
/* Fix white borders on diff wrapper — use theme border */
[data-theme="dark"] .d2h-file-wrapper {
  border-color: var(--border) !important;
}

/* ─── LIGHT THEME ─── */
[data-theme="light"] .d2h-wrapper {
  --d2h-bg-color: var(--bg-surface);
  --d2h-dark-color: var(--text-primary);
}
[data-theme="light"] .d2h-file-diff { background: var(--bg-surface) !important; }
[data-theme="light"] .d2h-code-linenumber,
[data-theme="light"] .d2h-code-side-linenumber { background: transparent !important; color: var(--text-muted) !important; border: none !important; }
[data-theme="light"] .d2h-code-line { background: var(--bg-surface) !important; }
[data-theme="light"] .d2h-code-side-line { background: var(--bg-surface) !important; }
[data-theme="light"] .d2h-ins .d2h-code-side-line,
[data-theme="light"] .d2h-ins .d2h-code-line { background: transparent !important; }
[data-theme="light"] .d2h-del .d2h-code-side-line,
[data-theme="light"] .d2h-del .d2h-code-line { background: transparent !important; }
[data-theme="light"] .d2h-ins { background: var(--diff-add-bg) !important; }
[data-theme="light"] .d2h-del { background: var(--diff-del-bg) !important; }
[data-theme="light"] .d2h-ins .d2h-code-line-ctn { color: var(--diff-add-text) !important; background: none !important; }
[data-theme="light"] .d2h-del .d2h-code-line-ctn { color: var(--diff-del-text) !important; background: none !important; }
[data-theme="light"] .d2h-ins .d2h-code-side-line-ctn { color: var(--diff-add-text) !important; background: none !important; }
[data-theme="light"] .d2h-del .d2h-code-side-line-ctn { color: var(--diff-del-text) !important; background: none !important; }
/* Side-by-side mode line backgrounds */
[data-theme="light"] .d2h-ins.d2h-code-side-line { background: var(--diff-add-bg) !important; }
[data-theme="light"] .d2h-del.d2h-code-side-line { background: var(--diff-del-bg) !important; }
[data-theme="light"] .d2h-info { background: var(--bg-raised) !important; color: var(--text-muted) !important; border-color: var(--border) !important; }
[data-theme="light"] .d2h-emptyplaceholder { background: var(--bg-raised) !important; border: none !important; }
[data-theme="light"] .d2h-code-side-emptyplaceholder { background: var(--bg-raised) !important; border: none !important; }
[data-theme="light"] .d2h-file-side-diff { border: none !important; background: var(--bg-surface) !important; }

/* ═══════════════════════════════════════════════ */
/*  CLICKABLE DIFF LINE NUMBERS                   */
/* ═══════════════════════════════════════════════ */
td.d2h-code-linenumber,
td.d2h-code-side-linenumber {
  cursor: pointer;
}
td.d2h-code-linenumber:hover,
td.d2h-code-side-linenumber:hover {
  background: var(--accent-dim) !important;
}

/* ═══════════════════════════════════════════════ */
/*  MARKDOWN PREVIEW                               */
/* ═══════════════════════════════════════════════ */
.md-preview {
  padding: 16px 24px;
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--text-primary);
}

.md-preview h1, .md-preview h2, .md-preview h3 {
  margin-top: 16px;
  margin-bottom: 8px;
}

.md-preview code {
  background: var(--bg-raised);
  padding: 1px 4px;
  border-radius: 3px;
  font-size: 0.84rem;
}

.md-preview pre {
  background: var(--bg-raised);
  padding: 12px;
  border-radius: var(--radius-sm);
  overflow-x: auto;
}

.md-preview pre code {
  background: none;
  padding: 0;
}

.md-preview table {
  border-collapse: collapse;
  width: 100%;
  margin: 8px 0;
}

.md-preview th, .md-preview td {
  border: 1px solid var(--border);
  padding: 6px 10px;
}

.md-preview th {
  background: var(--bg-input);
}

.md-preview blockquote {
  border-left: 3px solid var(--accent);
  margin: 8px 0;
  padding: 4px 12px;
  color: var(--text-secondary);
}

.md-preview ul, .md-preview ol {
  padding-left: 20px;
}

.md-preview img {
  max-width: 100%;
}

.md-preview a {
  color: var(--accent);
}

/* ═══════════════════════════════════════════════ */
/*  COMMIT HISTORY PANEL                           */
/* ═══════════════════════════════════════════════ */
.diff-history-panel {
  height: 220px;
  border-top: 1px solid var(--border);
  background: var(--bg-raised);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.diff-history-panel-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-raised);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  flex-shrink: 0;
}

.diff-history-branch-label {
  font-size: 0.7rem;
  font-weight: 400;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.diff-history-panel-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: 4px;
}

.diff-history-panel-header .btn {
  margin-left: auto;
}

.diff-history-list {
  overflow-y: auto;
  flex: 1;
}

.diff-history-row {
  display: grid;
  grid-template-columns: 80px 1fr auto auto;
  align-items: center;
  gap: 12px;
  padding: 6px 12px;
  font-size: 0.75rem;
  cursor: pointer;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.diff-history-row:hover {
  background: var(--bg-hover);
}

.diff-history-row.active {
  background: var(--accent-dim);
  color: var(--text-primary);
  border-left: 2px solid var(--accent);
}

.diff-history-row.selected {
  background: var(--bg-input);
  outline: 1px solid var(--accent);
  outline-offset: -1px;
}

.diff-history-row .commit-sha {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.diff-history-row .commit-subject {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.diff-history-row .commit-author {
  font-size: 0.7rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.diff-history-row .commit-date {
  font-size: 0.7rem;
  color: var(--text-muted);
  white-space: nowrap;
  text-align: right;
}

.diff-history-row .ahead-marker {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  margin-right: 4px;
  flex-shrink: 0;
  vertical-align: middle;
}

.diff-history-loading,
.diff-history-error {
  padding: 16px;
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: center;
}

.diff-history-error {
  color: var(--danger);
}

/* Branch browser in history panel */
.diff-history-body {
  display: flex;
  flex: 1;
  overflow: hidden;
}

.diff-history-branches {
  width: 250px;
  min-width: 180px;
  border-right: 1px solid var(--border);
  overflow-y: auto;
  flex-shrink: 0;
}

.diff-branch-row {
  padding: 4px 10px;
  font-size: 12px;
  cursor: pointer;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--text-secondary);
}

.diff-branch-row:hover {
  background: var(--bg-hover);
}

.diff-branch-row.active {
  background: var(--bg-active, var(--bg-hover));
  color: var(--text-primary);
  font-weight: 600;
}

.diff-history-commits {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}