/* grid-contenedor-selector-letra-y-materias */

@supports(display: grid ) {

  .grid-contenedor-selector-letra-y-materias {
    display: grid;
    grid-template-columns: 1fr;
    grid-template-areas: "panel-selector-letra"
                         "panel-documentos-letra";
    grid-gap: 0;
  }

  .panel-selector-letra {
    grid-area: panel-selector-letra;
  }

  .panel-documentos-letra {
    grid-area: panel-documentos-letra;
  }

}

/* -> grid-contenedor-selector-letra-y-materias */


/* grid-contenedor-panel-selector-letra */

@supports (display: grid) {

  .grid-contenedor-panel-selector-letra {
    min-width: auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, 40px); /* https://developer.mozilla.org/en-US/docs/Web/CSS/repeat#auto-fit */
    grid-auto-flow: row;
    grid-gap: 14px;
  }

  @media screen and (min-width: 768px) {
    .grid-contenedor-panel-selector-letra {
      grid-template-columns: repeat(auto-fit, 50px);
    }
  }

}

/* -> grid-contenedor-panel-selector-letra */


/* grid-contenedor-panel-materias-letra */

@supports(display: grid ) {

  .grid-contenedor-panel-materias-letra {
    display: grid;
    grid-template-columns: auto;
    grid-template-areas: "titulo-letra"
                         "panel-lista-materias";
  }

  .titulo-letra {
    grid-area: titulo-letra;
  }

  .panel-lista-materias {
    grid-area: panel-lista-materias;
  }

}

/* -> grid-contenedor-panel-materias-letra */


/* grid-contenedor-panel-lista-materias */

  @supports (display: grid) {

    .grid-contenedor-panel-lista-materias {
      display: grid;
      grid-template-columns: auto;
      grid-auto-flow: row;
      grid-gap: 10px;
    }

    @media screen and (min-width: 992px) {
      .grid-contenedor-panel-lista-materias {
        grid-gap: 20px;
      }
    }

  }
/* -> grid-contenedor-panel-lista-materias */