.chat-launcher{
  position:fixed;right:20px;bottom:20px;background:#ff7a00;color:#fff;
  border-radius:22px;padding:10px 16px;font-weight:600;cursor:pointer;z-index:9999;
  box-shadow:0 8px 24px rgba(0,0,0,.18)
}
.chat-panel{
  position:fixed;right:20px;bottom:80px;width:360px;max-width:95vw;height:520px;background:#fff;
  border-radius:14px;box-shadow:0 20px 50px rgba(0,0,0,.25);display:none;overflow:hidden;z-index:9999
}
.chat-header{background:#ff7a00;color:#fff;padding:12px 14px;font-weight:700;display:flex;justify-content:space-between;align-items:center}
.chat-body{height:calc(100% - 52px);display:flex;flex-direction:column}
.chat-messages{flex:1;overflow:auto;padding:12px;background:#fafafa}
.bubble{max-width:75%;margin:8px 0;padding:10px;border-radius:10px;font-size:14px;line-height:1.35}
.user{background:#f0f4ff}
.agent{background:#e8ffe8;margin-left:auto}

/* input row */
.chat-input{
  display:flex;flex-wrap:wrap;gap:8px;border-top:1px solid #eee;padding:10px;background:#fff
}
.chat-input input{
  padding:10px;border:1px solid #ddd;border-radius:8px;font-size:14px;flex:1 1 110px;min-width:0
}
.chat-input button{
  padding:10px 14px;border:none;border-radius:8px;background:#ff7a00;color:#fff;font-weight:700;flex:0 0 auto
}