.tts-sentence-list:focus {
  outline: none;
}

.tts-sentence-list.is-range-dragging {
  user-select: none;
  cursor: ns-resize;
}

.tts-multi-select-handle {
  position: absolute;
  top: 8px;
  left: 54px;
  bottom: 8px;
  z-index: 3;
  width: 10px;
  border-radius: 5px;
  cursor: ns-resize;
  opacity: 0;
  transition: opacity 120ms ease, background 120ms ease;
}

.tts-multi-select-handle::before {
  content: "⋮";
  position: absolute;
  top: 50%;
  left: 50%;
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1;
  transform: translate(-50%, -50%);
}

.tts-sentence-item:hover .tts-multi-select-handle,
.tts-sentence-item.is-multi-selected .tts-multi-select-handle {
  opacity: 0.75;
  background: color-mix(in srgb, var(--primary-color) 12%, transparent);
}

.tts-multi-select-handle:hover {
  opacity: 1 !important;
  background: color-mix(in srgb, var(--primary-color) 24%, transparent) !important;
}

.tts-sentence-item.is-multi-selected {
  background: color-mix(in srgb, var(--primary-color) 20%, var(--bg-secondary));
  border-color: color-mix(in srgb, var(--primary-color) 82%, white 8%);
  box-shadow:
    inset 4px 0 0 var(--primary-color),
    0 0 0 1px color-mix(in srgb, var(--primary-color) 30%, transparent);
}

.tts-sentence-item.is-multi-selected:hover {
  background: color-mix(in srgb, var(--primary-color) 26%, var(--bg-secondary));
}

.tts-sentence-item.is-multi-selected .tts-grp-zone {
  cursor: ns-resize;
}

.tts-sentence-selection-toolbar {
  /* 전체선택처럼 범위가 화면보다 길 때도 툴바가 보이도록 스크롤 하단에 붙인다. */
  position: sticky;
  bottom: 8px;
  z-index: 4;
  display: none;
  align-self: flex-end;
  align-items: center;
  gap: 6px;
  padding: 6px;
  border: 1px solid color-mix(in srgb, var(--primary-color) 55%, var(--border-color));
  border-radius: 9px;
  background: color-mix(in srgb, var(--bg-secondary) 94%, black 6%);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
  max-width: 100%;
}

.tts-sentence-selection-toolbar.is-visible {
  display: flex;
}

.tts-sentence-selection-toolbar.is-drag-placeholder {
  display: flex;
  visibility: hidden;
  pointer-events: none;
}

.tts-sentence-selection-count {
  min-width: 54px;
  padding: 0 5px;
  color: var(--text-secondary);
  font-size: calc(0.74rem + 5px);
  font-weight: 700;
  white-space: nowrap;
}

.tts-sentence-selection-toolbar button {
  min-height: 30px;
  padding: 5px 9px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background: var(--bg-tertiary);
  color: var(--text-primary);
  font-size: calc(0.76rem + 5px);
  font-weight: 650;
  cursor: pointer;
  white-space: nowrap;
}

.tts-sentence-selection-toolbar button:hover {
  border-color: var(--primary-color);
  background: color-mix(in srgb, var(--primary-color) 16%, var(--bg-tertiary));
}

.tts-sentence-selection-toolbar button.is-danger {
  border-color: color-mix(in srgb, #ef4444 65%, var(--border-color));
  color: #fca5a5;
}

.tts-sentence-selection-toolbar button.is-danger:hover {
  background: rgba(239, 68, 68, 0.16);
}

.tts-sentence-selection-toolbar button.is-clear {
  width: 30px;
  padding: 0;
  color: var(--text-secondary);
  font-size: 1rem;
}