.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);
}

/* Drag strip for frameless window (shown when no tabs are open) */
.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);
}

/* CodeMirror container */
.editor__cm-container {
  flex: 1;
  overflow: auto;
}

.editor__cm-container .cm-editor {
  height: 100%;
}

/* 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 container */
.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);
}