.tabBtn {
  padding:8px 15px;
  border:none;
  border-radius:6px;
  background:#f1f1f1;
  cursor:pointer;
  transition:0.3s;
}
.tabBtn.active, .tabBtn:hover { background:#007bff; color:#fff; }
.qrInput {
  width:100%;
  padding:10px;
  border:1px solid #ccc;
  border-radius:6px;
  margin-top:5px;
  margin-bottom:15px;
}
.btnReset, .btnDownload {
  padding:10px 18px;
  border:none;
  border-radius:8px;
  cursor:pointer;
  margin:5px;
  font-size:15px;
  transition:0.3s;
}
.btnReset { background:#ffc107; color:#000; }
.btnDownload { background:#28a745; color:#fff; }
.btnReset:hover { background:#e0a800; }
.btnDownload:hover { background:#218838; }