tolaria/src/components/Editor.css

.editor {
  background: var(--bg-primary);
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
  flex: 1;
  min-width: 0;
  overflow: hidden;
}

.editor__placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  text-align: center;
  color: var(--text-muted);
  gap: 8px;
}

.editor__placeholder p {
  margin: 0;
  font-size: 15px;
}

.editor__placeholder-hint {
  font-size: 12px;
  color: var(--text-faint);
}

.editor__drag-strip {
  height: 48px;
  flex-shrink: 0;
  -webkit-app-region: drag;
  app-region: drag;
}

/* Tab bar */
.editor__tab-bar {
  display: flex;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-primary);
  overflow-x: auto;
  flex-shrink: 0;
  -webkit-app-region: drag;
  app-region: drag;
}

.editor__tab-bar::-webkit-scrollbar {
  height: 0;
}

.editor__tab {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  font-size: 12px;
  color: var(--text-tertiary);
  cursor: pointer;
  border-right: 1px solid var(--border-primary);
  white-space: nowrap;
  max-width: 180px;
  flex-shrink: 0;
  transition: all 0.1s;
  -webkit-app-region: no-drag;
  app-region: no-drag;
}

.editor__tab:hover {
  background: var(--bg-hover-subtle);
  color: var(--text-secondary);
}

.editor__tab--active {
  background: var(--bg-primary);
  color: var(--text-primary);
  border-bottom: 2px solid var(--accent-blue);
}

.editor__tab-title {
  overflow: hidden;
  text-overflow: ellipsis;
}

.editor__tab-close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 14px;
  padding: 0 2px;
  line-height: 1;
  border-radius: 3px;
  opacity: 0;
  transition: opacity 0.1s;
}

.editor__tab:hover .editor__tab-close,
.editor__tab--active .editor__tab-close {
  opacity: 1;
}

.editor__tab-close:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

/* Wikilink inline content */
.wikilink {
  color: var(--accent-blue, #2196f3);
  cursor: pointer;
  text-decoration: underline;
  text-decoration-style: dotted;
  text-underline-offset: 2px;
  border-radius: 2px;
  padding: 0 1px;
}

.wikilink:hover {
  background: var(--accent-blue-bg, rgba(33, 150, 243, 0.1));
  text-decoration-style: solid;
}

/* BlockNote container */
.editor__blocknote-container {
  flex: 1;
  overflow: auto;
}

.editor__blocknote-container .bn-container {
  height: 100%;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 15px;
}

.editor__blocknote-container .bn-editor {
  padding: 20px 40px;
  max-width: 760px;
}

/* Tab bar actions (diff toggle) */
.editor__tab-bar-actions {
  display: flex;
  align-items: center;
  margin-left: auto;
  padding: 0 8px;
  -webkit-app-region: no-drag;
  app-region: no-drag;
}

.editor__diff-toggle {
  padding: 3px 10px;
  font-size: 11px;
  border: 1px solid var(--border-primary);
  border-radius: 4px;
  background: transparent;
  color: var(--text-tertiary);
  cursor: pointer;
  transition: all 0.15s;
  font-weight: 500;
}

.editor__diff-toggle:hover {
  background: var(--bg-button);
  color: var(--text-secondary);
}

.editor__diff-toggle--active {
  background: var(--accent-blue-bg);
  color: var(--accent-blue);
  border-color: var(--accent-blue-bg);
}

.editor__diff-toggle:disabled {
  opacity: 0.5;
  cursor: default;
}

/* Diff view */
.editor__diff-container {
  flex: 1;
  overflow: auto;
}

.diff-view {
  font-family: 'SF Mono', 'Menlo', 'Consolas', monospace;
  font-size: 13px;
  line-height: 1.6;
  padding: 12px 0;
}

.diff-view__empty {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--text-muted);
  font-size: 14px;
}

.diff-view__line {
  display: flex;
  padding: 0 16px;
  min-height: 22px;
}

.diff-view__line-number {
  width: 40px;
  flex-shrink: 0;
  text-align: right;
  padding-right: 12px;
  color: var(--text-faint);
  user-select: none;
}

.diff-view__line-content {
  flex: 1;
  white-space: pre-wrap;
  word-break: break-all;
  padding: 0 8px;
}

.diff-view__line--added {
  background: rgba(76, 175, 80, 0.12);
}

.diff-view__line--added .diff-view__line-content {
  color: #4caf50;
}

.diff-view__line--removed {
  background: rgba(244, 67, 54, 0.12);
}

.diff-view__line--removed .diff-view__line-content {
  color: #f44336;
}

.diff-view__line--hunk {
  background: rgba(33, 150, 243, 0.08);
}

.diff-view__line--hunk .diff-view__line-content {
  color: var(--accent-blue, #2196f3);
  font-style: italic;
}

.diff-view__line--header {
  background: var(--bg-hover-subtle);
}

.diff-view__line--header .diff-view__line-content {
  color: var(--text-muted);
  font-weight: 600;
}

.diff-view__line--context .diff-view__line-content {
  color: var(--text-secondary);
}

/* =============================================
   Bear-style live preview: zero horizontal shift
   ============================================= */

/* FIX 1: Remove header underlines */
.cm-heading-line {
  border-bottom: none !important;
  text-decoration: none !important;
}

/* FIX 2: Heading markers in left gutter area
   The ## markers are absolutely positioned in the content's left padding (40px),
   so they never affect text flow — zero horizontal shift. */
.cm-heading-line {
  position: relative;
}

.cm-heading-line .cm-formatting-block {
  position: absolute !important;
  top: 50%;
  transform: translateY(-50%);
  right: 100%;
  padding-right: 4px;
  font-size: 0.75rem !important;
  line-height: 1;
  opacity: 0;
  transition: opacity 0.15s ease-out !important;
  white-space: nowrap;
  pointer-events: none;
  color: var(--text-faint);
}

.cm-heading-line .cm-formatting-block.cm-formatting-block-visible {
  font-size: 0.75rem !important;
  opacity: 0.5;
  pointer-events: auto;
}

/* FIX 3: List/block bullets — always visible, fixed width, zero shift
   Override the library's font-size animation so the marker always occupies
   the same space regardless of cursor position. */
.cm-line:not(.cm-heading-line) .cm-formatting-block {
  font-size: 1em !important;
  display: inline-block !important;
  min-width: 1.5em !important;
  vertical-align: baseline;
  transition: color 0.15s ease-out, opacity 0.15s ease-out !important;
}

/* Inactive state: hide source text, show bullet dot via ::before */
.cm-line:not(.cm-heading-line) .cm-formatting-block:not(.cm-formatting-block-visible) {
  color: transparent !important;
  opacity: 1 !important;
  position: relative;
  overflow: visible !important;
}

.cm-line:not(.cm-heading-line) .cm-formatting-block:not(.cm-formatting-block-visible)::before {
  content: '\2022';
  position: absolute;
  left: 0;
  color: var(--text-tertiary);
}

/* Active state: show source marker (-, *, +, etc.) */
.cm-line:not(.cm-heading-line) .cm-formatting-block.cm-formatting-block-visible {
  color: var(--text-faint) !important;
  opacity: 1 !important;
}