*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Roboto', sans-serif;
}

.header{
    width: 100%;
    padding: 0;
    min-height: 100vh;
    background-image: url(../imagen/fondo.png);
    background-position: center;
    background-size: cover;
    overflow: hidden;
}

.titulo{
    font-size: 36px;
    margin: 0;
    padding: 1% 2%;
    color: #6C5942;
}

.header1{
    width: 100%;
    background-color: #f5f5dc;
    margin: 0px;
    padding: 5px;
    display: flex; 
    text-align: center;
    justify-content: space-between;
    position: fixed;
    z-index: 2;
    top: 0;
}

nav{
    display: flex;
    padding: 1% 2%;
    justify-content: space-between;
    align-items: center;
}

.nav-links ul li {
    list-style: none;
    display: inline-block;
    padding: 8px 12px;
    position: relative;
    transition: 0.5s;
}

.nav-links ul li a {
    color: #f5f5dc;
    text-decoration: none;
    font-size: 13px;
}

.text-box{
    width: 90%;
    color: #fff;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    text-align: center;
}

.boton-centro{
    display: inline-block;
    text-decoration: none;
    color: #fff;
    border: 1px solid #fff;
    padding: 12px 34px;
    font-size: 50px;
    background: transparent;
    position: relative;
    cursor: pointer;
    border-radius: 50px;
}

.boton-centro:hover{
    border: 1px solid #f5f5dc;
    background: #f5f5dc;
    transition: 1s;
}

.PAG1{
    width: 80%;
    margin: auto;
    text-align: center;
    padding-top: 100px;

}

.PAG1-Titulo{
    font-size: 30px;
    font-weight: 600;
    color: #6C5942;
}

p{
    color: #777;
    font-size: 14px;
    font-weight: 300;
    line-height: 22px;
    padding: 10px;
}

.circulo{
    background-color: #6C5942;
    border-radius: 20px;
}

.cir1{
    border-radius: 20px;
}

.cir1:hover{
    box-shadow: 0 0 20px 0px rgb(0, 0, 0);
}


/*---------------BIBLIOGRAFIA------------------------*/

.PAG2{
    color: #6C5942;
    height: 50vh;
    width: 100%;
    background-image:url(../imagen/bibliografia.jpg),linear-gradient(rgba(4,9.30,0.7),rgba(4,9.30,0.7) );
    background-position: center;
    background-size: cover;
    text-align: center;
    color: #6C5942;
    margin-top: 70px;
}

.titulo1{
    top: 150px; 
    color: #f5f5dc;
}

.row{
    margin: 5%;
    display: flex;
    justify-content: space-between;
}s

.fases{
    width: 80%;
    margin: auto;
    text-align: center;
    padding-top: 100px;
    z-index: 1;

}

h1{
    color: #6C5942;
    font-size: 36px;
    font-weight: 600;
    position: relative;
    text-align: center;
    margin-top: 30px;
}

p{
    color: #777;
    font-size: 14px;
    font-weight: 22px;
    padding: 10px;
    text-align: center;
    font-size: 16px;
}

.subtitulo{
    font-size: 20px;
}

.row{
    margin-top: 30px;
    display: flex;
    justify-content: space-between;

}

.fases-col{
    flex-basis: 31%;
    background: #BABEB6;
    border-radius: 10px;
    margin-bottom: 5%;
    padding: 20px 12px;
    box-sizing: border-box;
    transition: 0.5s;
}

h3{
    color: #6C5942;
    text-align: center;
    font-weight: 600;
    margin: 10px 0;
}

.fases-col:hover{
    box-shadow: 0 0 15px 0px rgba(0,0.0,0.2);
}

.subtitulo2{
    margin-top: 50px;
}

h2{
    font-size: 30px;
    color: #6C5942;
    text-align: center;
    font-weight: 600;
    margin-top: 50px;
}
/*--------------------trabajos-------------------------------*/
.item{
    position: relative;
    overflow: hidden;
}
.text-overlay{
    position: absolute;
    top: 10px;
    left: 0px;
    width: 212px;
    height: 141px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.text-overlay1{
    position: absolute;
    top: 10px;
    left: 0px;
    width: 250px;
    height: 320px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.item:hover .text-overlay1{
    opacity: 1;
}

.item:hover .text-overlay{
    opacity: 1;
}

.item img{
    display: block;
    transition: filter 0.3s ease;
}
.item:hover img{
    filter: blur(5px);
}

.text{
    color: #000;
    font-size: 15px;
    text-align: center;
    font-family: 'Roboto', sans-serif;

}
.text1{
    color:#fff;
    font-size: 15px;
    text-align: center;
    font-family: 'Roboto', sans-serif;
}

img{
    filter: grayscale(100%);
}

/*-------------formulario----------------------------------------*/

.formulario{
    display: flex;
    flex-direction: column;
    width: 90%;
    padding: 2em;
    background-color: #f5f5dc;
    position: relative;
    border-radius: 20px;
}

.cajaform{
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

input[type=¨text¨text], input[type="checkbox"], textarea, input[type="radio"]{
    margin: 10px,0px;
}

fieldset label{
    margin-right: 20px;

}

button{
    background-color: #6C5942;
    border: none;
    color: #fff;
}

input[type="text"],button{
    padding: .5em;
}

.titulo3{
    position: absolute;
    top: -20px;
    margin: 0;
    font-size:  1.3em; ;
    padding: .5em;
    border-radius: 20px;
    color: #fff;
    background-color:#6C5942
}

.politicas{
    padding: 10px;
    margin: 10px 0px;
}

.reseña{
    padding: 10px 20px;
    margin: 20px 0px;
}