.split {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 0;
  color: var(--foreground);
}

.toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  flex: 0 0 auto;
}

.backButton {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border: none;
  border-radius: 6px;
  background: transparent;
  color: var(--foreground);
  cursor: pointer;
}

.backButton:hover {
  background: color-mix(in srgb, var(--foreground) 8%, transparent);
}

.title {
  font-size: 14px;
  font-weight: 600;
}

.count {
  color: var(--muted-foreground);
  font-size: 12px;
}

.addWrap {
  position: relative;
  margin-left: auto;
}

.addButton {
  padding: 5px 12px;
  border: 1px solid var(--primary);
  border-radius: 6px;
  background: color-mix(in srgb, var(--primary) 14%, transparent);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
}

.addButton:disabled {
  opacity: 0.45;
  cursor: default;
  border-color: var(--border);
  background: transparent;
  color: var(--muted-foreground);
}

.picker {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  z-index: 30;
  list-style: none;
  margin: 0;
  padding: 4px;
  min-width: 220px;
  max-height: 320px;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--background);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.28);
}

.pickerItem {
  display: block;
  width: 100%;
  text-align: left;
  padding: 7px 10px;
  border: none;
  border-radius: 6px;
  background: transparent;
  color: var(--foreground);
  font-size: 13px;
  cursor: pointer;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.pickerItem:hover {
  background: color-mix(in srgb, var(--foreground) 8%, transparent);
}

/* Panes fill the remaining height and share the width; each pane scrolls its
   own transcript. Below the fit width they keep a minimum and scroll sideways. */
.panes {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  gap: 10px;
  padding: 10px;
  overflow-x: auto;
}

.paneSlot {
  flex: 1 1 0;
  min-width: 340px;
  height: 100%;
  min-height: 0;
}

.empty {
  flex: 1 1 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted-foreground);
  font-size: 13px;
}

.paneError {
  display: flex;
  flex-direction: column;
  gap: 8px;
  height: 100%;
  padding: 16px;
  border: 1px solid var(--error-color);
  border-radius: 10px;
  background: color-mix(in srgb, var(--error-color) 6%, transparent);
  color: var(--foreground);
  overflow: auto;
}

.paneErrorTitle {
  font-size: 13px;
  font-weight: 600;
}

.paneErrorMessage {
  font-size: 12px;
  color: var(--muted-foreground);
}

.paneErrorClose {
  align-self: flex-start;
  padding: 4px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: transparent;
  color: var(--foreground);
  font-size: 12px;
  cursor: pointer;
}