/* ─── TTS Listen Button (in article header) ─── */
.tts-listen-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: none;
  border: 1px solid var(--border-secondary, #333);
  border-radius: 20px;
  padding: 4px 14px;
  color: var(--text-secondary, #999);
  font-family: 'Inter', -apple-system, sans-serif;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  vertical-align: middle;
}
.tts-listen-btn:hover {
  background: var(--bg-hover, rgba(255,255,255,0.05));
  color: var(--text-primary, #fff);
  border-color: var(--accent, #6366f1);
}

/* ─── Floating Controller Bar ─── */
.tts-controller {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%) translateY(120px);
  background: var(--bg-card, #1a1a2e);
  border: 1px solid var(--border, #333);
  border-radius: 40px;
  padding: 8px 20px;
  z-index: 9999;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5), 0 0 0 1px rgba(99,102,241,0.1);
  backdrop-filter: blur(12px);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}
.tts-controller.visible {
  transform: translateX(-50%) translateY(0);
}
body.tts-active {
  padding-bottom: 100px;
}

.tts-ctrl-inner {
  display: flex;
  align-items: center;
  gap: 8px;
}

.tts-ctrl-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: none;
  border-radius: 50%;
  background: transparent;
  color: var(--text-secondary, #999);
  cursor: pointer;
  transition: all 0.15s;
  flex-shrink: 0;
  font-size: 14px;
}
.tts-ctrl-btn:hover {
  background: rgba(255,255,255,0.08);
  color: var(--text-primary, #fff);
}
#ttsStopBtn { color: #ef4444; }
#ttsStopBtn:hover { background: rgba(239,68,68,0.12); }

/* Time displays */
.tts-ctrl-time {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--text-secondary, #888);
  min-width: 36px;
  text-align: center;
  flex-shrink: 0;
}

/* Progress + scrub container */
.tts-ctrl-progress {
  flex: 1;
  min-width: 50px;
  height: 6px;
  position: relative;
  background: rgba(255,255,255,0.1);
  border-radius: 3px;
  overflow: hidden;
  cursor: pointer;
}
.tts-ctrl-bar {
  position: absolute;
  top: 0; left: 0;
  height: 100%;
  background: var(--accent, #6366f1);
  border-radius: 3px;
  width: 0%;
  pointer-events: none;
}
.tts-ctrl-scrub {
  position: absolute;
  top: -8px; left: 0;
  width: 100%;
  height: 22px;
  opacity: 0;
  cursor: pointer;
  margin: 0;
  -webkit-appearance: none;
  appearance: none;
  background: transparent;
}
.tts-ctrl-scrub::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent, #6366f1);
  cursor: pointer;
  box-shadow: 0 0 6px rgba(99,102,241,0.5);
}
.tts-ctrl-scrub::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent, #6366f1);
  cursor: pointer;
  border: none;
  box-shadow: 0 0 6px rgba(99,102,241,0.5);
}

/* Speed button */
#ttsSpeedBtn {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 600;
  color: var(--accent, #6366f1);
  width: auto;
  padding: 0 8px;
  border-radius: 14px;
}

/* ─── Mobile ─── */
@media (max-width: 640px) {
  .tts-controller {
    bottom: 12px;
    left: 8px;
    right: 8px;
    transform: translateY(120px);
    border-radius: 28px;
    padding: 8px 12px;
  }
  .tts-controller.visible {
    transform: translateY(0);
  }
  .tts-ctrl-inner {
    gap: 4px;
  }
  .tts-ctrl-btn {
    width: 28px;
    height: 28px;
    font-size: 12px;
  }
  .tts-ctrl-time {
    font-size: 10px;
    min-width: 30px;
  }
  .tts-ctrl-progress {
    min-width: 30px;
  }
  #ttsSpeedBtn {
    font-size: 10px;
    padding: 0 6px;
  }
  body.tts-active {
    padding-bottom: 75px;
  }
}