.voice-btn{width:34px;height:34px;display:grid;place-items:center;padding:0;border-radius:50%;border:1px solid var(--line2);background:var(--surface,rgba(8,12,24,.85));color:var(--cyan);cursor:pointer;backdrop-filter:blur(14px);transition:border-color .3s,color .3s,transform .3s}
.voice-btn:hover{border-color:var(--cyan);transform:translateY(-2px)}
.voice-btn:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
.voice-btn .v-off{display:none}
.voice-btn.is-off{color:var(--text);opacity:.6}
.voice-btn.is-off .v-on{display:none}
.voice-btn.is-off .v-off{display:block}
.voice-bubble{position:fixed;right:18px;bottom:98px;z-index:79;max-width:min(300px,calc(100vw - 100px));padding:10px 14px;border-radius:var(--r,14px);border:1px solid var(--line2);background:var(--surface,rgba(8,12,24,.92));color:var(--text);font:500 .78rem/1.45 var(--mono);box-shadow:0 14px 40px -12px rgba(0,0,0,.6);opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .35s,transform .35s,visibility .35s;pointer-events:none}
.voice-bubble::after{content:"";position:absolute;right:26px;bottom:-6px;width:10px;height:10px;background:inherit;border-right:1px solid var(--line2);border-bottom:1px solid var(--line2);transform:rotate(45deg)}
.voice-bubble.is-on{opacity:1;visibility:visible;transform:none}
.nova-btn.is-talking{border-color:var(--cyan);animation:nxvPulse 1.4s ease-in-out infinite}
@keyframes nxvPulse{0%,100%{box-shadow:0 0 0 0 rgba(177,249,59,.0)}50%{box-shadow:0 0 22px 2px rgba(177,249,59,.55)}}
@media (max-width:640px){
  .voice-bubble{right:14px;bottom:86px;max-width:calc(100vw - 100px);font-size:.72rem}
}
@media (prefers-reduced-motion:reduce){
  .nova-btn.is-talking{animation:none;box-shadow:0 0 14px 1px rgba(177,249,59,.5)}
  .voice-btn,.voice-bubble{transition:none}
}