* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primario: #fff;
    --fondo: #ffebf2; 
    --fondo-sobre: #ffe3ed; 
    --solapa-sobre: #ffccd5; 
    --cuerpo-sobre: #ffc1d1; 
    --sombra: rgba(0, 0, 0, 0.2);
    --texto: #003049; 
    --corazon: #ff477e; 
}

body {
    background: var(--fondo);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    height: 100vh;
}

h1 {
    font-family: "Marck Script", serif; 
    text-align: center;
    font-size: 60px;
    margin-bottom: 50px;
    color: #444;
}

.contenedor {
    width: 400px;
}

.envoltura-sobre {
    position: relative;
    background-color: var(--fondo-sobre);
    box-shadow: 0 0 40px var(--sombra);
    border-radius: 15px;
}

.sobre {
    position: relative;
    width: 400px;
    height: 300px;
}

.sobre::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 4;
    border-top: 180px solid var(--solapa-sobre);
    border-right: 200px solid transparent;
    border-left: 200px solid transparent;
    transform-origin: top;
    transition: all 0.5s ease-in-out 0.7s;
    border-radius: 10px;
}

.solapa-derecha {
    position: absolute;
    top: 0;
    right: 0;
    width: 100%;
    height: 100%;
    clip-path: polygon(100% 0, 0 100%, 100% 100%);
    background-color: var(--cuerpo-sobre);
    border-bottom-right-radius: 10px;
    border-top-right-radius: 10px;
    border-bottom-left-radius: 10px;
}

.solapa-izquierda {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    clip-path: polygon(0 0, 0 100%, 100% 100%);
    background-color: var(--cuerpo-sobre);
    border-top-left-radius: 10px;
    border-bottom-left-radius: 10px;
    border-bottom-right-radius: 10px;
}

.carta {
    position: absolute;
    bottom: 0;
    width: 100%;
    height: 100%;
    background-color: var(--primario);
    text-align: center;
    box-shadow: 0 0 5px var(--sombra);
    padding: 20px;
    border-radius: 10px;
    transition: transform .5s ease-in-out;
}

.contenido {
    font-family: "Gill Sans", Calibri, sans-serif;
    color: var(--texto);
    text-align: left;
    font-size: 12px;
    border: 3px dotted var(--texto);
    padding: 10px;
    height: 100%;
    line-height: 14px;
    cursor: pointer;
    overflow-Y: scroll;
}

.corazon {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 30px;
    height: 30px;
    background-color: var(--corazon);
    transform: translate(-50%,0) rotate(45deg);
    transition: transform 0.5s ease-in-out 1s;
    z-index: 999;
    cursor: pointer;
}

.corazon::before,
.corazon::after {
    content: "";
    position: absolute;
    width: 30px;
    height: 30px;
    background-color: var(--corazon);
    border-radius: 100%;

}

.corazon:before {
    top: -15px;
}

.corazon:after {
    right: 15px;
}

/*Agregar clases dinamicos*/
.abierto .sobre::before {
    transform: rotateX(180deg);
    z-index: 0;
}

.abierto .corazon {
    transform: rotate(90deg);
    transition-delay: 0.4s;
}

.carta.mostrar-carta {
    transform: translateY(-290px);
    transition: transform .5s ease-in-out;
}

.carta.cerrando-carta {
    transform: translateY(-290px);
    transition: transform .5s ease-in-out;
}

.carta.abierta {
    z-index: 10000;
}

.envoltura-sobre.desactivar-sobre .sobre::before {
    pointer-events: none;
}

/*Scroll personalizado*/

/*
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background-color: transparent;
}


::-webkit-scrollbar-thumb {
    background-color: var(--cuerpo-sobre);
    border-radius: 4px;
}


::-webkit-scrollbar-thumb:hover {
    background-color: var(--corazon);
}
*/

/*Vista celular*/

@media screen and (max-width:400px) {
    .contenedor {
        width: 300px;
    }

    .sobre {
        width: 300px;
        height: 250px;
    }

    .sobre::before {
        border-top:150px solid var(--solapa-sobre) ;
        border-right: 150px solid transparent;
        border-left: 150px solid transparent;
    }

}