:root {
  --bg: #0f1117;
  --card: #181b24;
  --line: #262b38;
  --fg: #e7ebf3;
  --muted: #8a93a6;
  --accent: #5b8cff;
  --ok: #46d17a;
  --warn: #ffcf5c;
  --err: #ff6b6b;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
}
.topbar {
  display: flex; justify-content: space-between; align-items: flex-start; gap: 16px;
  padding: 22px 26px; border-bottom: 1px solid var(--line); flex-wrap: wrap;
}
.eyebrow { color: var(--muted); font-size: 12px; letter-spacing: .12em; text-transform: uppercase; margin: 0 0 4px; }
h1 { margin: 0 0 6px; font-size: 24px; }
.subtitle { margin: 0; color: var(--muted); max-width: 720px; font-size: 14px; }
.subtitle a { color: var(--accent); }
code { background: #0c0e14; padding: 1px 5px; border-radius: 5px; font-size: 13px; }
.health { font-size: 13px; padding: 6px 12px; border: 1px solid var(--line); border-radius: 999px; white-space: nowrap; }
.health.ok { color: var(--ok); border-color: #234b34; }
.health.err { color: var(--err); border-color: #4b2323; }

.tabs { display: flex; gap: 8px; padding: 16px 26px 0; flex-wrap: wrap; }
.tab {
  background: var(--card); color: var(--muted); border: 1px solid var(--line);
  padding: 8px 18px; border-radius: 10px 10px 0 0; cursor: pointer; font-size: 14px;
}
.tab.active { color: var(--fg); border-bottom-color: var(--accent); background: #1d2230; }

main { padding: 18px 26px 40px; display: grid; gap: 16px; max-width: 920px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 18px 20px; }
.card h2 { margin: 0 0 8px; font-size: 17px; }
.note { color: var(--muted); font-size: 13px; margin: 0 0 14px; }
.hidden { display: none; }

.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
button, .upload {
  background: var(--accent); color: #fff; border: none; padding: 10px 18px;
  border-radius: 10px; cursor: pointer; font-size: 14px; font-weight: 600;
}
button.secondary, .upload { background: #222838; color: var(--fg); border: 1px solid var(--line); }
button:disabled { opacity: .45; cursor: not-allowed; }
.upload { display: inline-block; }

.statusline { margin-top: 12px; font-size: 13px; color: var(--muted); }
.player { width: 100%; margin-top: 14px; }

.badge { padding: 4px 12px; border-radius: 999px; border: 1px solid var(--line); font-size: 13px; color: var(--muted); }
.meter { display: flex; align-items: center; gap: 12px; margin-top: 14px; }
.meter-track { flex: 1; height: 10px; background: #0c0e14; border-radius: 999px; overflow: hidden; }
.meter-track i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--ok), var(--warn)); transition: width .08s; }

.result-card label { display: block; color: var(--muted); font-size: 12px; margin-bottom: 4px; }
.result-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px; }
.out { background: #0c0e14; border: 1px solid var(--line); border-radius: 8px; padding: 8px 12px; min-height: 38px; font-size: 14px; word-break: break-all; }
.out.ok { color: var(--ok); } .out.warn { color: var(--warn); }
details { margin-top: 14px; } summary { cursor: pointer; color: var(--muted); font-size: 13px; }
pre { background: #0c0e14; border: 1px solid var(--line); border-radius: 8px; padding: 12px; overflow: auto; font-size: 12px; max-height: 280px; }

.statusbar { position: sticky; bottom: 0; background: #0c0e14; border-top: 1px solid var(--line); padding: 10px 26px; font-size: 13px; color: var(--muted); }

/* 仿真回灌日志 */
.replay-log { margin-top: 14px; display: flex; flex-direction: column; gap: 8px; }
.replay-item { background: #0c0e14; border: 1px solid var(--line); border-radius: 8px; padding: 8px 12px; }
.replay-text { font-size: 15px; }
.replay-meta { color: var(--muted); font-size: 12px; margin-top: 3px; }
.replay-meta b.ok { color: var(--ok); }

/* VAD_ASR_TTS: TTS 合成输入 */
.divider { border: none; border-top: 1px solid var(--line); margin: 18px 0; }
.tts-input { flex: 1; min-width: 220px; background: #0c0e14; border: 1px solid var(--line); border-radius: 10px; color: var(--fg); padding: 10px 12px; font-size: 14px; }
.tts-settings { margin-top: 12px; display: grid; grid-template-columns: minmax(160px, 220px) 1fr auto; gap: 12px; align-items: end; }
.tts-settings label { display: flex; flex-direction: column; gap: 6px; color: var(--muted); font-size: 12px; }
.tts-select,
.tts-instructions { background: #0c0e14; border: 1px solid var(--line); border-radius: 10px; color: var(--fg); padding: 10px 12px; font-size: 14px; }
.tts-instructions { min-height: 72px; resize: vertical; line-height: 1.45; }
.tts-instructions-label { min-width: 0; }

@media (max-width: 760px) {
  .tts-settings { grid-template-columns: 1fr; align-items: stretch; }
}