.chat-pane {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  background: var(--ds-void);
}

.chat-pane-header {
  height: 56px;
  min-height: 56px;
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 0 var(--sp-4);
  border-bottom: 1px solid var(--ds-border);
  background: var(--ds-surface);
}

.chat-pane-back {
  background: transparent;
  border: none;
  color: var(--ds-muted);
  cursor: pointer;
  display: flex;
  padding: 4px;
  flex: none;
}

.chat-pane-title-block {
  min-width: 0;
  flex: 1;
}

.chat-pane-title {
  font-weight: 700;
  font-size: 0.96rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chat-pane-subtitle {
  font-size: 0.76rem;
  color: var(--ds-muted);
}

.chat-pane-info-btn {
  width: 32px;
  height: 32px;
  border-radius: var(--radius);
  background: transparent;
  border: 1px solid var(--ds-border);
  color: var(--ds-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex: none;
}

.chat-pane-info-btn-active {
  background: var(--ds-surface-2);
}

.chat-pane-error {
  color: var(--ds-danger);
  font-size: 0.86rem;
  padding: var(--sp-2) var(--sp-4) 0;
  margin: 0;
}

.chat-pane-note {
  color: var(--ds-muted);
}