.tarjetas {
    --marca__color1: #C21015;
    --marca__color2: #F0D427;
    --marca__color3: #e2e2e2;
    --nameTarjeta: transparent;
    --anchoTarjeta: 400px;
    --altoTarjeta: 320px;
    --anchoContentTarjetas: 1200px;
}

@media (max-width: 400px) {
    .tarjetas {
        --anchoTarjeta: 300px;
        --altoTarjeta: 300px;
    }

    .tarjetas header h1 {
        font-size: 38px;
    }
}

.tarjetas * {
    box-sizing: border-box;
}

/*=== TARJETAS GIRATORIAS ===*/

.tarjetas .flip-container {
    -webkit-perspective: 1000;
    -o-perspective: 1000;
    perspective: 1000;
    display: inline-block;
}

@media all and (min-device-width: 768px) {
    .tarjetas .flip-container:hover .flipper {
        -webkit-transform: rotateY(180deg);
        transform: rotateY(180deg);
    }
}

@media all and (max-device-width: 767px) {
    .tarjetas .flip-container.hover .flipper {
        -webkit-transform: rotateY(180deg);
        transform: rotateY(180deg);
    }
}


.tarjetas .flip-container,
.tarjetas .front,
.tarjetas .back {
    width: var(--anchoTarjeta);
    height: var(--altoTarjeta);
}

.tarjetas .flip-container .flipper {
    -webkit-transition: 0.6s;
    -webkit-transform-style: preserve-3d;

    -moz-transition: 0.6s;
    -moz-transform-style: preserve-3d;

    -o-transition: 0.6s;
    -o-transform-style: preserve-3d;

    transition: 0.6s;
    transform-style: preserve-3d;

    position: relative;
}

.tarjetas .flip-container .front,
.tarjetas .flip-container .back {
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    position: absolute;
    top: 0;
    left: 0;
}

.tarjetas .flip-container .back {
    -moz-transform: rotateY(180deg);
    -o-transform: rotateY(180deg);
    -webkit-transform: rotateY(180deg);
    text-align: center;
    transform: rotateY(180deg);
}

/*=== FIN TARJETAS GIRATORIAS ===*/

.tarjetas {
    padding: 10px 0;
    color: #fff;
    max-width: var(--anchoContentTarjetas);
    width: 100%;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

.tarjetas .flip-container {
    cursor: pointer;
    margin: 10px 1%;
}

.tarjetas .back {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-flow: column;
    flex-flow: column;
}

.tarjetas .contenidoCardBack,
.tarjetas .contenidoCardFront {
    padding: 5px 10px;
    line-height: 1.15;
    margin-bottom: 10px;
    color: #fff;
    font-size: 25px;
}

.tarjetas .contenidoCardBack {
    color: #fff;
}

.tarjetas .contenidoCardFront {
    color: #444242;
}

.tarjetas .contenidoCardFront img {
    width: 100%;
    max-width: 160px;
}

.tarjetas .front {
    display: flex;
    flex-wrap: wrap;
    /* align-items: center; */
    justify-content: center;
}

.tarjetas .front,
.tarjetas .back {
    border-radius: 5px;
    padding: 20px;
    background-image: url(../img/background-diagonal.png);
    background-repeat: repeat;
    background-size: auto;
}

.tarjetas .front {
    background-blend-mode: screen;
}

.tarjetas .front>div {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.tarjetas .back {
    background-blend-mode: hard-light;
}

.tarjetas .nameFront {
    padding: 10px;
    margin-bottom: 20px;
    text-align: center;
    color: var(--marca__color1);
    line-height: 1.2;
    font-size: 24px;
}

@media (max-width: 576px) {
    .tarjetas .nameFront {
        font-size: 20px;
    }
}

.tarjetas .flip-container .front .nameFront {
    background-color: var(--nameTarjeta);
}

.titleFront,
.titleBack {
    display: block;
    margin-left: auto;
    margin-right: auto;
    width: max-content;
    font-size: 22px;
    font-weight: bold;
    margin-bottom: 20px;
    padding: 5px 10px;
}

.titleFront {
    background-color: var(--marca__color1);
    color: var(--marca__color3);
}

.titleBack {
    background-color: var(--marca__color2);
    color: var(--marca__color1);
}

.tarjetas .front::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: calc(100% - 20px);
    height: calc(100% - 20px);
    border: 4px solid var(--marca__color1);
    border-radius: 5px;
}

.tarjetas .back::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: calc(100% - 20px);
    height: calc(100% - 20px);
    border: 4px solid var(--marca__color2);
    border-radius: 5px;
}

.tarjetas .flip-container .front {
    background-color: var(--marca__color3);
}

.tarjetas .flip-container .back {
    background-color: var(--marca__color1);
    color: #000000;
}

.tarjetas .imgFront {
    max-width: 100%;
    width: 220px;
    padding: 0;
    margin: 10px auto;
    border-radius: 5px;
    box-shadow: 0 0 6px 0 rgba(0, 0, 0, .3);
}