#aurora-btn{position:fixed;bottom:24px;right:24px;width:56px;height:56px;border-radius:50%;background:linear-gradient(135deg,#635bff,#f2643b);color:#fff;border:none;cursor:pointer;box-shadow:0 4px 20px rgba(99,91,255,.35);z-index:9999;display:flex;align-items:center;justify-content:center;font-size:24px;transition:transform .2s,box-shadow .2s}#aurora-btn:hover{transform:scale(1.08);box-shadow:0 6px 28px rgba(99,91,255,.5)}
#aurora-btn.pulse::after{content:'';position:absolute;inset:0;border-radius:50%;border:2px solid #f2643b;animation:aurora-pulse 2s infinite}
@keyframes aurora-pulse{0%{transform:scale(1);opacity:.8}100%{transform:scale(1.6);opacity:0}}

#aurora-widget{position:fixed;bottom:88px;right:24px;width:360px;max-height:520px;background:#fff;border-radius:16px;box-shadow:0 8px 40px rgba(0,0,0,.18);z-index:9998;display:none;flex-direction:column;overflow:hidden;font-family:'Segoe UI',system-ui,sans-serif}
#aurora-widget.open{display:flex}

#aurora-head{background:linear-gradient(135deg,#0d2340,#1a4a7c);color:#fff;padding:14px 18px;display:flex;align-items:center;gap:10px}
#aurora-head .av{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,#635bff,#f2643b);display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;flex-shrink:0}
#aurora-head .info{flex:1}
#aurora-head .info strong{font-size:14px;display:block}
#aurora-head .info span{font-size:11px;opacity:.7}
#aurora-close{background:none;border:none;color:rgba(255,255,255,.7);font-size:20px;cursor:pointer;padding:4px}
#aurora-close:hover{color:#fff}

#aurora-msgs{flex:1;overflow-y:auto;padding:14px 16px;display:flex;flex-direction:column;gap:8px;background:#f8fafc;min-height:200px;max-height:340px}
.aurora-msg{max-width:85%;padding:9px 13px;border-radius:12px;font-size:13.5px;line-height:1.55;animation:aurora-fade .25s ease}
@keyframes aurora-fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}
.aurora-user{align-self:flex-end;background:#635bff;color:#fff;border-bottom-right-radius:4px}
.aurora-bot{align-self:flex-start;background:#fff;color:#1e293b;border:1px solid #e2e8f0;border-bottom-left-radius:4px}
.aurora-typing{display:flex;gap:4px;padding:12px 16px;align-self:flex-start}
.aurora-typing span{width:7px;height:7px;border-radius:50%;background:#94a3b8;animation:aurora-bounce 1.2s infinite}
.aurora-typing span:nth-child(2){animation-delay:.2s}
.aurora-typing span:nth-child(3){animation-delay:.4s}
@keyframes aurora-bounce{0%,60%,100%{transform:translateY(0)}30%{transform:translateY(-6px)}}

#aurora-foot{display:flex;gap:8px;padding:10px 14px;border-top:1px solid #e2e8f0;background:#fff}
#aurora-inp{flex:1;border:1.5px solid #e2e8f0;border-radius:10px;padding:8px 12px;font-size:13px;outline:none;transition:border-color .15s}
#aurora-inp:focus{border-color:#635bff}
#aurora-send{background:#635bff;color:#fff;border:none;border-radius:10px;width:38px;height:38px;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:16px;transition:background .15s;flex-shrink:0}
#aurora-send:hover{background:#4f46e5}
#aurora-send:disabled{opacity:.5;cursor:default}
#aurora-err{display:none;background:#fef2f2;color:#dc2626;font-size:12px;padding:6px 14px;border-top:1px solid #fca5a5}
#aurora-err.show{display:block}

@media(max-width:480px){
  #aurora-widget{right:8px;left:8px;width:auto;bottom:80px;max-height:80vh}
  #aurora-btn{right:12px;bottom:16px;width:48px;height:48px;font-size:20px}
}