.bdh-chat{
  max-width: 920px;
  margin: 0 auto;
  height: 82vh;
  border: 1px solid rgba(0,0,0,.08);
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: #fff;
}

.bdh-chat__header{
  padding: 14px 16px;
  font-weight: 600;
  border-bottom: 1px solid rgba(0,0,0,.08);
}

.bdh-chat__messages{
  padding: 16px;
  flex: 1;
  overflow-y: auto;
}

.bdh-msg{
  margin: 10px 0;
  display: flex;
}

.bdh-msg--user{ justify-content: flex-end; }
.bdh-msg--assistant{ justify-content: flex-start; }

.bdh-bubble{
  max-width: 80%;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid rgba(0,0,0,.08);
  line-height: 1.35;
  white-space: pre-wrap;
}

.bdh-msg--user .bdh-bubble{
  background: rgba(0,0,0,.04);
}

.bdh-chat__inputRow{
  display: flex;
  gap: 8px;
  padding: 12px;
  border-top: 1px solid rgba(0,0,0,.08);
}

.bdh-chat__input{
  flex: 1;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid rgba(0,0,0,.12);
  outline: none;
}

.bdh-chat__send{
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid rgba(0,0,0,.12);
  background: #fff;
  cursor: pointer;
}