/* Speech Layer — interactive voice demo (scoped under .sl-demo) */
.sl-demo {
  --d-bg: #ffffff;
  --d-soft: #f6f7f9;
  --d-card: #ffffff;
  --d-edge: #e4e7ed;
  --d-text: #161c26;
  --d-muted: #57606e;
  --d-faint: #8a93a3;
  --d-accent: #1c64d8;
  --d-accent-hover: #1853b4;
  --d-accent-soft: rgba(28, 100, 216, 0.07);
  --d-accent-edge: rgba(28, 100, 216, 0.24);
  --d-op: #161c26;
  --d-radius: 12px;
  color: var(--d-text);
  font-family: "Inter", "Segoe UI", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
}
[data-theme="dark"] .sl-demo {
  --d-bg: #0d1117;
  --d-soft: #10151c;
  --d-card: #151b24;
  --d-edge: #262f3d;
  --d-text: #e8ebf1;
  --d-muted: #9aa3b2;
  --d-faint: #6d7686;
  --d-accent: #5b93ec;
  --d-accent-hover: #7aa7f0;
  --d-accent-soft: rgba(91, 147, 236, 0.1);
  --d-accent-edge: rgba(91, 147, 236, 0.3);
  --d-op: #2a3442;
}

.sl-demo * { box-sizing: border-box; }

/* ---------- tabs ---------- */
.sl-demo-tabs {
  display: flex; flex-wrap: wrap; gap: 8px;
  margin: 0 0 20px;
  padding: 0; list-style: none;
}
.sl-demo-tab {
  appearance: none; border: 1px solid var(--d-edge); background: var(--d-card);
  color: var(--d-muted); font: inherit; font-size: 14.5px; font-weight: 600;
  padding: 9px 16px; border-radius: 999px; cursor: pointer;
  transition: background .15s ease, color .15s ease, border-color .15s ease;
}
.sl-demo-tab:hover { color: var(--d-text); border-color: var(--d-accent-edge); }
.sl-demo-tab[aria-selected="true"] {
  background: var(--d-accent); border-color: var(--d-accent); color: #fff;
}
.sl-demo-tab:focus-visible { outline: 2px solid var(--d-accent); outline-offset: 2px; }

/* ---------- player card ---------- */
.sl-demo-card {
  background: var(--d-card);
  border: 1px solid var(--d-edge);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(16, 21, 29, 0.08);
}
[data-theme="dark"] .sl-demo-card { box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35); }

.sl-demo-head {
  display: flex; align-items: center; gap: 14px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--d-edge);
  background: var(--d-soft);
}
.sl-demo-play {
  appearance: none; border: 0; cursor: pointer;
  width: 46px; height: 46px; border-radius: 50%;
  background: var(--d-accent); color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  flex: 0 0 auto;
  transition: background .15s ease, transform .12s ease;
}
.sl-demo-play:hover { background: var(--d-accent-hover); }
.sl-demo-play:active { transform: scale(0.94); }
.sl-demo-play:focus-visible { outline: 2px solid var(--d-accent); outline-offset: 2px; }
.sl-demo-play svg { width: 19px; height: 19px; fill: currentColor; }
.sl-demo-play .ic-pause { display: none; }
.sl-demo-play[aria-pressed="true"] .ic-pause { display: block; }
.sl-demo-play[aria-pressed="true"] .ic-play { display: none; }

.sl-demo-headtext { min-width: 0; flex: 1 1 auto; }
.sl-demo-title { font-weight: 700; font-size: 16.5px; letter-spacing: -0.01em; }
.sl-demo-cast { font-size: 13px; color: var(--d-faint); margin-top: 1px; }
.sl-demo-cast b { color: var(--d-muted); font-weight: 600; }

.sl-demo-sound {
  appearance: none; background: transparent; border: 1px solid var(--d-edge);
  border-radius: 8px; width: 38px; height: 38px; cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--d-muted); flex: 0 0 auto;
  transition: color .15s ease, border-color .15s ease;
}
.sl-demo-sound:hover { color: var(--d-text); border-color: var(--d-accent-edge); }
.sl-demo-sound:focus-visible { outline: 2px solid var(--d-accent); outline-offset: 2px; }
.sl-demo-sound svg { width: 18px; height: 18px; fill: currentColor; }
.sl-demo-sound .ic-off { display: none; }
.sl-demo-sound[aria-pressed="true"] .ic-off { display: block; }
.sl-demo-sound[aria-pressed="true"] .ic-on { display: none; }

/* ---------- progress ---------- */
.sl-demo-progress {
  position: relative; height: 6px; background: var(--d-soft);
  cursor: pointer;
}
.sl-demo-progress-fill {
  position: absolute; inset: 0 auto 0 0; width: 0%;
  background: var(--d-accent);
  transition: width .2s linear;
}
.sl-demo-progress-mark {
  position: absolute; top: 0; bottom: 0; width: 2px;
  background: var(--d-bg); opacity: .9;
}
.sl-demo-time {
  display: flex; justify-content: space-between;
  font-size: 12px; color: var(--d-faint); font-variant-numeric: tabular-nums;
  padding: 6px 20px 0;
}

/* ---------- stage / bubbles ---------- */
.sl-demo-stage {
  padding: 18px 20px 20px;
  min-height: 380px;
  display: flex; flex-direction: column; gap: 12px;
}
.sl-demo-empty {
  margin: auto; text-align: center; color: var(--d-faint); font-size: 15px;
  padding: 40px 0;
}
.sl-demo-empty svg { width: 42px; height: 42px; display: block; margin: 0 auto 10px; }

.sl-demo-row { display: flex; align-items: flex-end; gap: 10px; }
.sl-demo-row.op { flex-direction: row-reverse; }

.sl-demo-ava {
  width: 32px; height: 32px; border-radius: 50%; flex: 0 0 auto;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--d-edge);
  background: var(--d-soft);
  position: relative;
}
.sl-demo-row.ag .sl-demo-ava { background: var(--d-accent-soft); border-color: var(--d-accent-edge); }
.sl-demo-ava img { width: 19px; height: 19px; display: block; }
.sl-demo-row.op .sl-demo-ava svg { width: 16px; height: 16px; fill: var(--d-faint); }

/* equalizer on active avatar */
.sl-demo-eq { position: absolute; inset: 0; display: none; align-items: center; justify-content: center; gap: 2.5px; border-radius: 50%; background: var(--d-accent); }
.sl-demo-eq i { width: 2.5px; background: #fff; border-radius: 2px; animation: sl-eq 0.9s ease-in-out infinite; }
.sl-demo-eq i:nth-child(1) { height: 9px; animation-delay: 0s; }
.sl-demo-eq i:nth-child(2) { height: 14px; animation-delay: .15s; }
.sl-demo-eq i:nth-child(3) { height: 7px; animation-delay: .3s; }
.sl-demo-eq i:nth-child(4) { height: 12px; animation-delay: .45s; }
@keyframes sl-eq { 0%, 100% { transform: scaleY(.45); } 50% { transform: scaleY(1); } }
.sl-demo-row.live .sl-demo-eq { display: flex; }
.sl-demo-row.live .sl-demo-ava img,
.sl-demo-row.live .sl-demo-ava > svg { visibility: hidden; }

.sl-demo-bubble {
  max-width: min(78%, 560px);
  padding: 11px 15px;
  border-radius: 16px;
  font-size: 15.5px; line-height: 1.5;
  opacity: 0; transform: translateY(10px) scale(.97);
  transition: opacity .28s ease, transform .28s cubic-bezier(.2,.9,.3,1.2), box-shadow .2s ease;
}
.sl-demo-row.shown .sl-demo-bubble { opacity: 1; transform: none; }
.sl-demo-row.ag .sl-demo-bubble {
  background: var(--d-soft); color: var(--d-text);
  border: 1px solid var(--d-edge);
  border-bottom-left-radius: 5px;
}
.sl-demo-row.op .sl-demo-bubble {
  background: var(--d-op); color: #f2f5f9;
  border-bottom-right-radius: 5px;
}
.sl-demo-row.live.ag .sl-demo-bubble {
  border-color: var(--d-accent-edge);
  box-shadow: 0 0 0 3px var(--d-accent-soft);
}
.sl-demo-row.live.op .sl-demo-bubble { box-shadow: 0 0 0 3px rgba(28, 100, 216, 0.18); }
.sl-demo-who {
  display: block; font-size: 11.5px; font-weight: 700;
  letter-spacing: .05em; text-transform: uppercase;
  margin-bottom: 3px;
}
.sl-demo-row.ag .sl-demo-who { color: var(--d-accent); }
.sl-demo-row.op .sl-demo-who { color: rgba(242, 245, 249, .55); }

/* typing indicator */
.sl-demo-typing { display: none; }
.sl-demo-typing.on { display: flex; }
.sl-demo-typing .sl-demo-bubble { padding: 13px 16px; display: flex; gap: 5px; }
.sl-demo-typing i {
  width: 7px; height: 7px; border-radius: 50%; background: var(--d-faint);
  animation: sl-blink 1.1s ease-in-out infinite;
}
.sl-demo-typing i:nth-child(2) { animation-delay: .18s; }
.sl-demo-typing i:nth-child(3) { animation-delay: .36s; }
@keyframes sl-blink { 0%, 100% { opacity: .25; transform: translateY(0); } 50% { opacity: 1; transform: translateY(-3px); } }

/* ---------- transcript ---------- */
.sl-demo-transcript { border-top: 1px solid var(--d-edge); }
.sl-demo-transcript-toggle {
  appearance: none; background: transparent; border: 0; cursor: pointer;
  width: 100%; text-align: left; font: inherit;
  display: flex; align-items: center; gap: 8px;
  padding: 13px 20px; font-size: 14px; font-weight: 600; color: var(--d-muted);
  transition: color .15s ease;
}
.sl-demo-transcript-toggle:hover { color: var(--d-text); }
.sl-demo-transcript-toggle:focus-visible { outline: 2px solid var(--d-accent); outline-offset: -2px; }
.sl-demo-transcript-toggle svg { width: 13px; height: 13px; fill: currentColor; transition: transform .2s ease; }
.sl-demo-transcript-toggle[aria-expanded="true"] svg { transform: rotate(90deg); }
.sl-demo-transcript-body { display: none; padding: 2px 20px 18px; }
.sl-demo-transcript-body.open { display: block; }
.sl-demo-line {
  display: flex; gap: 10px; padding: 7px 0; font-size: 14.5px; line-height: 1.55;
  border: 0; background: transparent; width: 100%; text-align: left;
  cursor: pointer; color: var(--d-text); font-family: inherit;
  border-radius: 8px; padding: 7px 10px; margin: 0 -10px;
  transition: background .12s ease;
}
.sl-demo-line:hover { background: var(--d-soft); }
.sl-demo-line:focus-visible { outline: 2px solid var(--d-accent); outline-offset: 1px; }
.sl-demo-line.live { background: var(--d-accent-soft); }
.sl-demo-line .who { flex: 0 0 108px; font-weight: 700; font-size: 12.5px; text-transform: uppercase; letter-spacing: .04em; padding-top: 2px; }
.sl-demo-line[data-speaker="agent"] .who { color: var(--d-accent); }
.sl-demo-line[data-speaker="operator"] .who { color: var(--d-faint); }

@media (max-width: 640px) {
  .sl-demo-stage { min-height: 300px; padding: 14px 14px 16px; }
  .sl-demo-bubble { max-width: 86%; font-size: 14.5px; }
  .sl-demo-line .who { flex-basis: 84px; }
}

@media (prefers-reduced-motion: reduce) {
  .sl-demo-bubble { transition: none; }
  .sl-demo-eq i, .sl-demo-typing i { animation: none; }
}