#cb-fab{position:fixed;right:20px;bottom:20px;width:54px;height:54px;border-radius:50%;
  background:var(--blue,#2563eb);color:#fff;font-size:24px;border:none;cursor:pointer;
  box-shadow:0 4px 14px rgba(0,0,0,.4);z-index:9998}
#cb-panel{position:fixed;top:0;right:-420px;width:400px;height:100vh;background:#0f172a;
  border-left:1px solid #1e293b;display:flex;flex-direction:column;transition:right .25s;
  z-index:9999}
#cb-panel.open{right:0}
#cb-head{padding:14px 16px;border-bottom:1px solid #1e293b;display:flex;
  align-items:center;justify-content:space-between;color:#e2e8f0;font-weight:600}
#cb-msgs{flex:1;overflow-y:auto;padding:14px;display:flex;flex-direction:column;gap:10px}
.cb-msg{padding:9px 12px;border-radius:10px;font-size:13px;line-height:1.45;max-width:90%;
  white-space:pre-wrap;word-wrap:break-word}
.cb-user{align-self:flex-end;background:#2563eb;color:#fff}
.cb-bot{align-self:flex-start;background:#1e293b;color:#e2e8f0}
.cb-tool{align-self:flex-start;background:#0b3b2e;color:#6ee7b7;font-size:12px;font-style:italic}
.cb-confirm{align-self:stretch;background:#3b2410;border:1px solid #f59e0b;color:#fde68a;
  padding:10px;border-radius:10px;font-size:13px}
.cb-confirm button{margin-right:8px;margin-top:8px;border:none;border-radius:6px;
  padding:6px 12px;cursor:pointer;font-weight:600}
.cb-yes{background:#16a34a;color:#fff}.cb-no{background:#dc2626;color:#fff}
#cb-input-wrap{padding:12px;border-top:1px solid #1e293b;display:flex;gap:8px}
#cb-input{flex:1;background:#1e293b;border:1px solid #334155;border-radius:8px;color:#e2e8f0;
  padding:9px;font-size:13px;resize:none}
#cb-send{background:var(--blue,#2563eb);color:#fff;border:none;border-radius:8px;
  padding:0 14px;cursor:pointer}