#ttsSamplesApp {
  --tts-highlight: var(--bs-warning-bg-subtle);
  --tts-highlight-border: var(--bs-warning-border-subtle);
  --tts-hover: color-mix(in srgb, var(--bs-primary) 8%, transparent);
  --tts-line-height: 1.75;
  padding-bottom: 2.5rem;
  display: block;
}

#ttsSamplesApp .tts-toolbar label {
  font-weight: 600;
  color: var(--bs-body-color);
}

#ttsSamplesApp .tts-toolbar .form-select,
#ttsSamplesApp .tts-toolbar .form-check-input,
#ttsSamplesApp .tts-toolbar .form-range,
#ttsSamplesApp .tts-toolbar .form-control {
  background-color: var(--bs-body-bg);
  color: var(--bs-body-color);
  border-color: var(--bs-border-color);
}

#ttsSamplesApp .card-body {
  line-height: 1.65;
}

#ttsSamplesApp .tts-controls {
  gap: 1.35rem;
  flex-wrap: wrap;
}

#ttsSamplesApp .tts-controls .flex-grow-1 {
  min-width: 220px;
}

#ttsTranscript {
  font-family: "Noto Sans", "Lexend", "Inter", system-ui, -apple-system, Segoe UI, sans-serif;
  font-size: 1.05rem;
  line-height: var(--tts-line-height);
  letter-spacing: 0.01em;
  word-spacing: 0.02em;
  border: 1px solid var(--bs-border-color);
  border-radius: 1.1rem;
  padding: 1.1rem 1.25rem;
  background: var(--bs-body-bg);
  min-height: 200px;
}

#ttsTranscript .line {
  display: block;
  margin: 0.35rem 0;
  cursor: pointer;
  border-radius: 0.5rem;
  padding: 0.2rem 0.55rem;
  transition: background-color 120ms ease, border-color 120ms ease;
}

#ttsTranscript .line.blank {
  cursor: default;
  padding: 0.35rem 0;
}

#ttsTranscript .word {
  cursor: pointer;
  padding: 0 0.22rem;
  border-radius: 0.4rem;
  transition: background 120ms ease;
}

#ttsTranscript .word:hover {
  background: var(--tts-hover);
}

#ttsTranscript .word.active {
  background: var(--tts-highlight);
  box-shadow: 0 0 0 1px var(--tts-highlight-border);
}

#ttsTranscript .active-line {
  background: var(--tts-highlight);
  box-shadow: inset 0 0 0 1px var(--tts-highlight-border);
}

#ttsNote {
  color: var(--bs-warning-text-emphasis);
}

#ttsSamplesApp .tts-note-box {
  background: color-mix(in srgb, var(--bs-info-bg-subtle) 75%, var(--bs-body-bg) 25%);
  border: 1px solid var(--bs-info-border-subtle);
  border-radius: 0.75rem;
  padding: 1.2rem 1.35rem;
  line-height: 1.65;
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--bs-info-border-subtle) 75%, transparent);
}

#ttsSamplesApp .tts-note-box h2 {
  font-size: 1.1rem;
  margin-bottom: 0.45rem;
}

#ttsSamplesApp .tts-meta {
  color: var(--bs-secondary-color);
  letter-spacing: 0.01em;
}