.qy-tts-root {
  --qy-tts-bg: #ffffff;
  --qy-tts-fg: #0f172a;
  --qy-tts-primary: #10b981;
  --qy-tts-border: #dbe2ea;
  --qy-tts-muted: #64748b;
  --qy-tts-shadow: 0 10px 30px rgba(15, 23, 42, 0.14);
}

.qy-tts-root .qy-tts-hidden,
.qy-tts-float.is-hidden {
  display: none !important;
}

.qy-tts-toolbar {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin: 0.35rem 0 0.75rem;
}

.qy-tts-toggle {
  appearance: none;
  border: 1px solid var(--qy-tts-border);
  background: #fff;
  color: var(--qy-tts-fg);
  border-radius: 999px;
  padding: 0.28rem 0.75rem;
  font-size: 0.875rem;
  line-height: 1.3;
  cursor: pointer;
}

.qy-tts-toggle:hover {
  border-color: var(--qy-tts-primary);
  color: var(--qy-tts-primary);
}

.qy-tts-toggle:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.qy-tts-status {
  color: var(--qy-tts-muted);
  font-size: 0.8125rem;
  min-height: 1.2em;
}

.qy-tts-float {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 1040;
  width: min(320px, calc(100vw - 2rem));
  background: var(--qy-tts-bg);
  color: var(--qy-tts-fg);
  border: 1px solid var(--qy-tts-border);
  border-radius: 14px;
  box-shadow: var(--qy-tts-shadow);
  padding: 0.75rem;
}

.qy-tts-float.is-collapsed .qy-tts-float-bar,
.qy-tts-float.is-collapsed .qy-tts-float-controls,
.qy-tts-float.is-collapsed .qy-tts-settings-panel,
.qy-tts-float.is-collapsed .qy-tts-settings-panel-backdrop {
  display: none !important;
}

.qy-tts-float-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.qy-tts-float-title {
  font-size: 0.875rem;
  font-weight: 600;
}

.qy-tts-float-top-right {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.qy-tts-float-progress {
  font-size: 0.75rem;
  color: var(--qy-tts-muted);
}

.qy-tts-float-collapse,
.qy-tts-float-btn,
.qy-tts-settings-close {
  appearance: none;
  border: 1px solid var(--qy-tts-border);
  background: #fff;
  color: var(--qy-tts-fg);
  border-radius: 8px;
  padding: 0.28rem 0.55rem;
  font-size: 0.8125rem;
  cursor: pointer;
}

.qy-tts-float-btn--primary {
  background: var(--qy-tts-primary);
  border-color: var(--qy-tts-primary);
  color: #fff;
}

.qy-tts-float-bar {
  height: 4px;
  border-radius: 999px;
  background: #e2e8f0;
  overflow: hidden;
  margin-bottom: 0.55rem;
}

.qy-tts-float-bar-fill {
  display: block;
  height: 100%;
  width: 0;
  background: var(--qy-tts-primary);
  transition: width 0.12s linear;
}

.qy-tts-float-controls {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  flex-wrap: wrap;
}

.qy-tts-settings-panel-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.28);
  z-index: 1041;
}

.qy-tts-settings-panel {
  position: absolute;
  left: 0.5rem;
  right: 0.5rem;
  bottom: calc(100% + 0.45rem);
  z-index: 1042;
  background: #fff;
  border: 1px solid var(--qy-tts-border);
  border-radius: 12px;
  box-shadow: var(--qy-tts-shadow);
  padding: 0.75rem;
}

.qy-tts-settings-grabber {
  width: 42px;
  height: 4px;
  border-radius: 999px;
  background: #cbd5e1;
  margin: 0 auto 0.65rem;
}

.qy-tts-settings-row {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 0.45rem;
  align-items: center;
  margin-bottom: 0.45rem;
}

.qy-tts-settings-label {
  font-size: 0.75rem;
  color: var(--qy-tts-muted);
}

.qy-tts-float-select {
  width: 100%;
  border: 1px solid var(--qy-tts-border);
  border-radius: 8px;
  padding: 0.28rem 0.4rem;
  font-size: 0.8125rem;
  background: #fff;
}

.qy-tts-settings-help {
  margin: 0.4rem 0 0.65rem;
  font-size: 0.72rem;
  color: var(--qy-tts-muted);
  line-height: 1.4;
}

.qy-tts-settings-close {
  width: 100%;
}

@media (max-width: 640px) {
  .qy-tts-float {
    right: 0.65rem;
    left: 0.65rem;
    bottom: 0.65rem;
    width: auto;
  }
}

/* Reading highlight — theme-agnostic (vars set by tts-highlight.js on content root) */
[data-qy-tts-content] .is-tts-current {
  background: var(--qy-tts-para-surface, rgba(16, 185, 129, 0.16)) !important;
  border-radius: 0.25rem;
  box-shadow: inset 0 0 0 1px var(--qy-tts-para-edge, rgba(16, 185, 129, 0.3));
  transition: background-color 0.2s ease, box-shadow 0.2s ease;
}

[data-qy-tts-content] .ydw-tts-sentence {
  transition: background-color 0.18s ease, box-shadow 0.18s ease;
}

[data-qy-tts-content] .ydw-tts-sentence.is-tts-current-sentence {
  background: var(--qy-tts-sent-surface, rgba(16, 185, 129, 0.24)) !important;
  border-radius: 0.22rem;
  box-shadow: inset 0 0 0 1px var(--qy-tts-sent-edge, rgba(16, 185, 129, 0.42));
  padding: 1px 2px;
  margin: -1px -2px;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}

[data-qy-tts-content].is-tts-current {
  background: var(--qy-tts-inner-surface, rgba(16, 185, 129, 0.1)) !important;
  border-radius: 0.5rem;
  padding: 0.25rem 0.35rem;
  box-shadow: inset 0 0 0 1px var(--qy-tts-inner-edge, rgba(16, 185, 129, 0.26));
  transition: background-color 0.2s ease, box-shadow 0.2s ease;
}

[data-qy-tts-content] [data-qy-tts-current],
[data-qy-tts-content][data-qy-tts-current] {
  background: var(--qy-tts-attr-surface, rgba(16, 185, 129, 0.16)) !important;
  border-radius: 0.25rem;
  box-shadow: inset 0 0 0 1px var(--qy-tts-attr-edge, rgba(16, 185, 129, 0.34)) !important;
}

[data-qy-tts-content] .is-tts-current.is-tts-current-sentence {
  background: var(--qy-tts-both-surface, rgba(16, 185, 129, 0.2)) !important;
  box-shadow: inset 0 0 0 1px var(--qy-tts-both-edge, rgba(16, 185, 129, 0.4)) !important;
}