.sidebar {
  width: var(--sidebar-w);
  background: var(--bg-sidebar);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  transition: width var(--tr), opacity var(--tr);
}
#sidebar-left { border-left: none; border-right: 1px solid var(--border); }
.sidebar.hidden { width: 0; overflow: hidden; opacity: 0; }

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  font-weight: 600;
  font-size: 12px;
  color: var(--text-secondary);
  flex-shrink: 0;
}
.sidebar-close {
  font-size: 12px;
  color: var(--text-muted);
  padding: 2px 4px;
  border-radius: 3px;
}
.sidebar-close:hover { background: var(--bg-toolbar-hover); color: var(--text-primary); }

.sidebar-content {
  flex: 1;
  overflow-y: auto;
  padding: 8px;
}

/* Outline items */
.outline-item {
  padding: 4px 8px;
  border-radius: 3px;
  cursor: pointer;
  font-size: 12px;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.outline-item:hover { background: var(--bg-toolbar-hover); }
.outline-item.h1 { font-weight: 700; padding-left: 8px; }
.outline-item.h2 { padding-left: 18px; color: var(--text-secondary); }
.outline-item.h3 { padding-left: 28px; color: var(--text-muted); font-size: 11px; }

/* Styles Panel */
.style-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  border-radius: 4px;
  cursor: pointer;
  border: 1px solid transparent;
  margin-bottom: 3px;
}
.style-item:hover { background: var(--bg-toolbar-hover); border-color: var(--border); }
.style-item.active { background: var(--accent-light); border-color: var(--accent); }
.style-preview {
  width: 40px; height: 28px;
  border: 1px solid var(--border);
  background: #fff;
  display: flex; align-items: center; justify-content: center;
  border-radius: 2px;
  flex-shrink: 0;
  overflow: hidden;
}
.style-name { font-size: 12px; }