.ai-assist-btn{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:6px;height:28px;padding:0 12px;border-radius:8px;border:1px solid #E4DCF9;background:#fff;color:#344054;cursor:pointer;overflow:hidden;transition:box-shadow .18s ease,transform .12s ease,color .18s ease}
          .ai-assist-btn::before{content:"";position:absolute;inset:0;background:linear-gradient(115deg,transparent 30%,rgba(124,92,255,.08) 47%,rgba(159,132,255,.12) 50%,rgba(124,92,255,.08) 53%,transparent 70%);transform:translateX(-120%);animation:aiaShimmer 6.5s ease-in-out infinite;pointer-events:none}
          @keyframes aiaShimmer{0%{transform:translateX(-120%)}55%,100%{transform:translateX(120%)}}
          .ai-assist-btn:hover{color:#7C5CFF;box-shadow:0 2px 10px -2px rgba(124,92,255,.3)}
          .ai-assist-btn:active{transform:translateY(.5px)}
          .ai-assist-btn>*{position:relative;z-index:1}
          .ai-assist-btn .aia-txt{font:500 13px/1 'Inter',sans-serif;letter-spacing:-.005em;color:#7C5CFF}
          .ai-assist-btn .aia-ic{display:inline-flex;width:16px;height:16px;color:#7C5CFF}
          body.aia-open .ai-assist-btn{box-shadow:0 2px 10px -2px rgba(124,92,255,.3)}
          @media (prefers-reduced-motion:reduce){.ai-assist-btn::before{animation:none}}
          body.theme-dark .ai-assist-btn{background:linear-gradient(#23262C,#23262C) padding-box,linear-gradient(120deg,#3B4A6B,#4A3F7A 45%,#3B4A6B) border-box;color:#D1D5DB}
          body.theme-dark .ai-assist-btn .aia-txt{background:linear-gradient(90deg,#7AA5FF,#B79CFF);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
          body.theme-dark .ai-assist-btn .aia-ic{color:#7AA5FF}