.unicasms-enviada {
    font-family: 'Segoe UI', sans-serif;
    display: inline-block;
    max-width: 80%;
    padding: 10px 15px;
    background: #007aff;
    color: white;
    font-size: 15px;
    line-height: 1.4;
    margin: 10px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);

    /* arredondamento estilo SMS/iMessage */
    border-radius: 20px 20px 20px 5px;
  }

  .unicasms-recebida {
    font-family: 'Segoe UI', sans-serif;
    display: inline-block;
    max-width: 80%;
    padding: 10px 15px;
    background: #e5e5ea;
    color: #000;
    font-size: 15px;
    line-height: 1.4;
    margin: 10px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);

    /* arredondamento pro lado esquerdo */
    border-radius: 20px 20px 5px 20px;
  }