/* mascot-v5-talk.css —— 小伴全局对话坞样式（学生端与官网共用） */
#xbTalkDock {
  position: fixed; right: 14px; bottom: 262px; width: 300px; max-width: calc(100vw - 28px);
  z-index: 61;
  background: linear-gradient(160deg, #6d5efc, #8b6fe8); color: #fff; border-radius: 18px;
  box-shadow: 0 18px 50px rgba(80, 70, 200, .32); display: none; flex-direction: column;
  overflow: hidden; font-family: inherit;
}
#xbTalkDock.open { display: flex; animation: xbtd-in .22s ease both; }
@keyframes xbtd-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
#xbTalkDock .xbtd-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 12px; background: rgba(255, 255, 255, .12); font-weight: 700;
}
#xbTalkDock .xbtd-title { font-weight: 700; font-size: 14px; }
#xbTalkDock .xbtd-x { border: none; background: transparent; color: #fff; font-size: 18px; line-height: 1; cursor: pointer; }
#xbTalkDock .xbtd-msgs { max-height: 240px; overflow: auto; padding: 10px 12px; display: flex; flex-direction: column; gap: 8px; }
#xbTalkDock .xbtd-msg { font-size: 13px; line-height: 1.5; padding: 8px 10px; border-radius: 12px; max-width: 88%; word-break: break-word; }
#xbTalkDock .xbtd-me { align-self: flex-end; background: #6d5efc; color: #fff; border-bottom-right-radius: 4px; }
#xbTalkDock .xbtd-xb { align-self: flex-start; background: #eef0fb; color: #1d2140; border-bottom-left-radius: 4px; }
#xbTalkDock .xbtd-status {
  font-size: 11px; color: #d9d3ff; padding: 0 12px 4px; min-height: 14px;
  opacity: 0; transform: translateY(-2px); transition: opacity .2s ease, transform .2s ease;
  pointer-events: none;
}
#xbTalkDock .xbtd-status.show { opacity: 1; transform: none; }
/* [灵敏度20260901] VU 音量条：说话时条会动=麦克风收到了；绿色=音量过门槛有效 */
#xbTalkDock .xbtd-vu {
  height: 4px; margin: 2px 12px 0; border-radius: 2px; background: rgba(255,255,255,.14);
  overflow: hidden; pointer-events: none;
}
#xbTalkDock .xbtd-vu i { display: block; height: 100%; width: 0; background: #b9b3e8; border-radius: 2px; transition: width .12s linear, background .2s linear; }
#xbTalkDock.focused .xbtd-composer input { border-color: #fff; box-shadow: 0 0 0 2px rgba(255,255,255,.18); }
#xbTalkDock .xbtd-composer { display: flex; gap: 6px; padding: 8px 10px; border-top: 1px solid rgba(255, 255, 255, .22); }
#xbTalkDock .xbtd-composer input {
  flex: 1; min-width: 0; border: 1px solid rgba(255, 255, 255, .35); border-radius: 10px;
  padding: 8px 10px; font-size: 13px; outline: none; background: #fff; color: #1d2140;
}
#xbTalkDock .xbtd-composer input:focus { border-color: #fff; }
#xbTalkDock .xbtd-send, #xbTalkDock .xbtd-mic, #xbTalkDock .xbtd-wake {
  border: none; background: #eef0fb; border-radius: 10px; width: 38px; height: 38px;
  font-size: 16px; cursor: pointer; display: flex; align-items: center; justify-content: center;
}
#xbTalkDock .xbtd-send { color: #6d5efc; font-size: 18px; }
#xbTalkDock .xbtd-send:hover { background: #fff; }
#xbTalkDock .xbtd-mic.on, #xbTalkDock .xbtd-wake.on { background: #4b3fd6; color: #fff; filter: brightness(1.08); }
/* [唤醒式] 常驻待机：呼吸灯，提示"正在听小伴" */
#xbTalkDock .xbtd-mic.on { animation: xbtd-breath 2.2s ease-in-out infinite; }
@keyframes xbtd-breath {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255, 255, 255, .0); }
  50% { box-shadow: 0 0 0 6px rgba(255, 255, 255, .28); }
}
/* 播报/思考中：黄色点光，表示"嘴占用，但你可以随时打断" */
#xbTalkDock .xbtd-mic.on.busy { animation: xbtd-busy 1s ease-in-out infinite; background: #f5a623; color: #fff; }
@keyframes xbtd-busy {
  0%, 100% { box-shadow: 0 0 0 0 rgba(245, 166, 35, .0); }
  50% { box-shadow: 0 0 0 6px rgba(245, 166, 35, .35); }
}
/* 2026-09-01：阈值 1024 → 768，平板/预览面板（如 IDE 内嵌浏览器）也能用 */
@media (max-width: 768px) { #xbTalkDock { display: none !important; } }