* {
    box-sizing: border-box;
}

body{
    background-color: black;
    margin: 0;
    max-width: 100vw;
    font-size: 1rem;
    font-family: Helvetica, sans-serif;
    word-wrap: break-word;
}


main {
    overflow: hidden;
}

header {
    position: relative;
    margin-top: 0;
    top: 30px;
    display: flex;
    max-width: 95%;
    justify-content: space-between;
    align-items: center;
    margin-left: auto;
    margin-right: auto;
    padding-top: 0;
   
}

header .button-title {
    font-size: 1.7rem;
    text-decoration: none;
    color: black;
    font-weight: 500;
    filter: invert(1);
    mix-blend-mode: difference; 
}

.button-title {
    z-index: 100;
}

nav {
    z-index: 100;
    display: none;
}

header nav a {
    margin-left: 30px;
}



  /* The container <div> - needed to position the dropdown content */
  .dropdown {
    position: relative;
    padding: 0px;
    z-index: 100;
    filter: invert(1);
    mix-blend-mode: difference; 
  }

 /* Dropdown Button */
 .dropbtn {
    background-color: transparent;
    color: black;
    padding: 5px;
    font-size: 1.7rem;
    border: none;
    font-weight: 500;
    letter-spacing: 0.1rem;
  }
  

  
  /* Dropdown Content (Hidden by Default) */
  .dropdown-content {
    display: none;
    position: absolute;
    padding-bottom: 50px;
    padding-top: 20px;
    padding-left: 50px;
    padding-right: 50px;
    left: auto;
    right: -50px;
    background-color: transparent;
    min-width: 160px;
  }

  
  /* Links inside the dropdown */
  .dropdown-content a {
    text-align: right;
    color: black;
    padding: 8px 0px;
    text-decoration: none;
    display: block;
    font-size: 1.4rem;
    font-weight: 300;
  }
  
  /* Change color of dropdown links on hover */
  .dropdown-content a:hover {
    font-weight: 400;
}
  
  /* Show the dropdown menu on hover */
  .dropdown:hover .dropdown-content {display: block;}
  
.no-overflow {
    position: absolute;
    top: 0;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
}

.black-background{
    z-index: -10;
    height: 100vh;
    width: 100vw;
    position: absolute;
    margin: 0;
    top: 0;
    animation-name: slide-up;
    animation-duration: 0.5s;
    background-color: black;
    animation-delay: 0s;
    animation-fill-mode: forwards;
}


.white-background{
    z-index: -15;
    height: 100vh;
    width: 100vw;
    position: absolute;
    margin: 0;
    top: 0;
    animation-name: slide-down;
    animation-duration: 0.5s;
    background-color: white;
    animation-delay: 0.5s;
    animation-fill-mode: forwards;
}


@keyframes slide-up {
    from {}
    to {transform: translateX(100%);}
}


@keyframes slide-down {
    from {}
    to {transform: translateY(-100%);}
}

.primo-numero {
    position: relative;
    margin-top: 80px;
    display: flex;
    max-width: 95%;
    justify-content: flex-start;
    margin-left: auto;
    margin-right: auto;
    padding-top: 0;
    align-items: flex-start;
}

.primo-numero .left-column {
    max-width: 40%;
    overflow: hidden;
    margin-right: 5vw;
}

.primo-numero img {
    object-fit: cover;
    max-width: 80%;
    transition: transform 0.5s;
}

.primo-numero .img-animation {
    animation-name: slide-up-img;
    animation-duration: 0.5s;
    animation-delay: 0.7s;
    animation-fill-mode: forwards;
    transform: translateY(1000px);
}

@keyframes slide-up-img {
    to{transform: translateY(0%);}
    
}

.primo-numero img:hover {
    transform: scale(1.1);

}

.primo-numero .colonna {
    position: sticky;
    top: 20px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    max-width: 50%;
    filter: invert(1);
    mix-blend-mode: difference; 
    
}



.colonna .title-numero p{
    font-size: 6em;
    font-weight: 800;
    margin: 0;
    padding-top: 0;
    line-height: 1;
    color: black;
    
}

.colonna .sottotitolo-numero p{
    font-size: 1.8rem;
    font-weight: 600;
    font-style: italic;
    margin-top: 0px;
    color: black;
}


.seeMore {
    text-decoration: none;
    font-size: 1.8rem;
    margin-top: 10px;
    padding-bottom: 10px;
    align-self: flex-start;
    background-color: transparent;
    padding-left: 0;
    border-color: transparent;
    border-bottom: black 1px solid;
    
}

.seeMore:hover {
font-weight: 800;
}



.primo-numero .colonna-animation {
    animation-name: slide-up-column;
    animation-duration: 0.5s;
    animation-delay: 0.8s;
    opacity: 0;
    animation-fill-mode: forwards;
    transform: translateY(1000px);
}

@keyframes slide-up-column {
    to{transform: translateY(0%);
    opacity: 1;}
    
}


.empty-space {
    position: relative;
    height: 60px;
}

.titolo-sezione {
    position: relative;
    filter: invert(1);
    mix-blend-mode: difference; 
    max-width: 95%;
    margin-left: auto;
    margin-right: auto;    
    margin-top: 40px;
    margin-bottom: 0px;
}


.titolo-sezione p {
    font-size: 4em;
    font-weight: 800;
    margin: 0;
    padding-top: 0;
    padding-bottom: 0;
}


.sottotitolo-sezione {
    position: relative;
    filter: invert(1);
    mix-blend-mode: difference; 
    max-width: 95%;
    margin-left: auto;
    margin-right: auto;    
    margin-top: 0px;
    margin-bottom: 30px;
}


.sottotitolo-sezione p {
    font-size: 2.5em;
    font-weight: 800;
    margin: 0;
    padding-top: 0;
    line-height: 1;
    font-style: italic;
}



.titolo-sottosezione {
    position: relative;
    filter: invert(1);
    mix-blend-mode: difference; 
    max-width: 90%;
    margin-left: 50px;
    margin-right: auto;    
    margin-top: 20px;
    margin-bottom: 20px;
}


.titolo-sottosezione p {
    font-size: 4rem;
    font-weight: 800;
    margin: 0;
    padding-top: 0;
    line-height: 1;
}




.articoli {
    position: relative;
    margin-top: 0px;
    margin-bottom: 10px;
    display: flex;
    max-width: 95%;
    flex-direction: column;
    justify-content: space-between;
    align-items: top;
    margin-left: auto;
    margin-right: auto;
    padding-top: 0;
    
    
}

.sotto-articoli {
    position: relative;
    margin-top: 0px;
    display: flex;
    max-width: 85%;
    flex-direction: column;
    justify-content: space-between;
    align-items: top;
    margin-left: auto;
    margin-right: auto;
    padding-top: 0;
    
    
}



.colonna-articoli-editoriali {
    display: flex;
    flex-direction: column;
    max-width: 90%;
    margin-left: 50px;
    margin-right: auto;
    filter: invert(1);
    mix-blend-mode: difference;
    
    
}

.colonna-editoriali {
    display: flex;
    flex-direction: column;
    max-width: 90%;
    margin-left: 0px;
    margin-top: 80px;
    margin-right: auto;
    filter: invert(1);
    mix-blend-mode: difference;
    
}   


.colonna-articoli-editoriali  .title-articoli {
    filter: invert(1);
    mix-blend-mode: difference; 
    margin-top: 5px;
}

.colonna-articoli-editoriali .title-articoli p {
    font-size: 3em;
    font-weight: 600;
    margin: 0;
    padding-top: 0;
    line-height: 1;
    color: rgba(255, 255, 255, 1);
}


 


.colonna-articoli-editoriali .sottotitolo-articoli p {
    font-size: 1.8rem;
    font-weight: 600;
    font-style: italic;
    margin-top: 0px;
}


.colonna-editoriali .title-articoli p {
    font-size: 3em;
    font-weight: 800;
    margin: 0;
    padding-top: 0;
    line-height: 1;
}

.colonna-editoriali .sottotitolo-articoli p {
    font-size: 1.8rem;
    font-weight: 600;
    font-style: italic;
    margin-top: 0px;
}




.articoli .colonna-articoli-immagini {
    flex-wrap: wrap;
    display: flex;
    justify-content: flex-start;
    gap: 3%;
    flex-direction: row;
    width: 100%;
}

.sotto-articoli .colonna-articoli-immagini {
    flex-wrap: wrap;
    display: flex;
    justify-content: flex-start;
    gap: 3%;
    flex-direction: row;
    width: 100%;
}




 

.colonna-articoli-immagini .articolo {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 0px;
    width: 22%;
    height: auto;
    padding: 20px 20px;
    margin-left: 0;
    margin-top: 25px;
    margin-bottom: 15px;
    border: solid 1px rgba(255, 255, 255, 0.5);
    text-decoration: none;
}



.colonna-articoli-immagini .articolo:hover {
    border: solid 1px white;
}


.colonna-articoli-immagini .articolo  a {
    text-decoration: none;
}



.articolo .articolo-img {
    display: block;
    object-fit: cover;
    width: 100%;
    height: 30vh;
    margin-top: 0;
    margin-left: auto;
    margin-right: auto;
    object-fit: cover;
    transition: transform 0.5s ease-out;
    overflow: hidden;

}




.articolo .descrizione-immagine-articolo {
    position: relative;
    color: white;
    padding: 0;
    overflow-wrap: break-word;
    font-size: 1.2rem;
    font-weight: 600;
}

.articolo .autore-articolo {
    color: white;
    padding: 0;
    font-size: 1.2rem;
    font-weight: 300;
    margin-bottom: 0;
    text-align: right;
    font-style: italic;
}





.invisible-left{
    transform: translateX(-80px);
    opacity: 0;
    transition: 0.7s ease;
}

.invisible-bottom{
    transform: translateY(80px);
    opacity: 0;
    transition: 0.7s ease;
}



footer {
    margin-top: 80px;
    margin-bottom: 80px;
    max-width: 100vw;
    overflow: hidden;
    
}

.custom-footer {

    display: flex;
    max-width: 90%;
    justify-content: space-between;
    margin-left: auto;
    margin-right: 5vw;
    margin-top: 50px;
    padding-top: 0;

}

hr.line {
    border-top: solid 1px rgba(255, 255, 255, 0.5);
    max-width: 95%;
    margin-right: 0;
    margin-top: 10px;
}

.footer-index {
    max-width: 40%;
}

.footer-index a{
        text-align: right;
        color: white;
        padding: 10px 0px;
        text-decoration: none;
        display: block;
        font-size: 2rem;
        font-weight: 200;
      
}


.invisible-right{
    transform: translateX(100%);
    opacity: 0;
    transition: 0.7s ease;
}




.custom-footer .contatti {
    display: flex;
    flex-direction: column;
    max-width: 60%;
    margin-top: 0;
}



.custom-footer .contatti .title-articoli p {
    font-size: 6em;
    font-weight: 800;
    margin: 0;
    padding-top: 0;
    line-height: 1;
    color: white;
    
}

.custom-footer .contatti .sottotitolo-articoli p {
    font-size: 1.8rem;
    font-weight: 600;
    font-style: italic;
    margin-top: 0px;
    color: white;
}







.collapsible {
    display: flex;
    background-color: transparent;
    flex-direction: row;
    align-items: center;
    cursor: pointer;
    padding: 0px;
    width: 100%;
    text-align: left;
    outline: none;
    border-color: transparent;
  }


  .fake-collapsible {
    display: flex;
    background-color: transparent;
    flex-direction: row;
    align-items: center;
    cursor: pointer;
    padding: 0px;
    width: 100%;
    text-align: left;
    outline: none;
    border-color: transparent;
  }
  
  /* Add a background color to the button if it is clicked on (add the .active class with JS), and when you move the mouse over it (hover) */
  /*
  .active, .collapsible:hover {
    
  }

  */
  
  /* Style the collapsible content. Note: hidden by default */
  .content {
    width: 90%;
    max-height: 0;
    margin-right: auto;
    margin-left: 50px;
    overflow: hidden;
    transition: max-height 0.2s ease-out;

  }

  .collapsible:after {
    content: '\271A'; /* Unicode character for "plus" sign (+) */
    font-size: 3em;
    color: rgba(255, 255, 255, 0.8);
    float: right;
    margin-left: 100px;
    padding-top: 0;
    line-height: 1;
  }

   .collapsible:hover:after,
   .collapsible:hover:active {
    color: white;
}
  
  .active:after {
    content: "\268A"; /* Unicode character for "minus" sign (-) */
    padding: 0;
    margin-top: 0;
  }

  .articolo-intero {
    max-width: 95%;
    margin: auto;
  }

  .articolo-intero p {
    font-size: 1.8rem;
    font-weight: 400;
    margin-top: 0px;
    color: black;
    filter: invert(1);
    mix-blend-mode: difference; 
  }


.visible{
    transform: translate(0);
    opacity: 1;
}



@media screen and (max-width: 1000px){
    
    
    header .button-title {
        font-size: 3rem;
    }

    .dropbtn {
        font-size: 3rem;
    }

    .dropdown-content a {
        font-size: 3rem;
    }

    .banner h1{
        font-size: 5rem;
    }
    .library{
        grid-template-columns: repeat(2, 1fr);
    }
    .library img{
        height: 300px;
    }

    .nav-pc {
        display: none;
    }

    .dropdown {
        display: inline-block;
    }

    
    .white-background{
        animation-delay: 0.3s;
    }

    .empty-space {
        height: 60px;
    }


    .titolo-sezione {
           
        margin-top: 30px;
    }


    .titolo-sezione p {
        font-size: 7em;
        
    }


   

    .sottotitolo-sezione p {
        font-size: 4em;
        
    }

    .titolo-sottosezione {
           
        margin-top: 200px;
    }


    .titolo-sottosezione p {
        font-size: 6em;
        
    }

        
    
    .primo-numero {
        flex-direction: column-reverse;
        max-width: 95%;
        margin-top: 200px;
    }


    .primo-numero .left-column {
        position: sticky;
        top: 20px;
        max-width: 100%;
        overflow: hidden;
        margin-left: 0;
    }

   
    .primo-numero .colonna {
        max-width: 100%;
        margin-bottom: 70px;
    }

    .colonna .title-numero p{
        margin-top: 5px;
        margin-bottom: 0px;
        font-size: 8rem;
        
    }
    
    .colonna .sottotitolo-numero p{
        margin-top: 0;
        font-size: 3rem;
    }
    

    .seeMore {
        font-size: 3rem;
        margin-top: 20px;
        border-bottom: black 3px solid;

    }



    .articoli {
        flex-flow: column;
        width: 100%;
        margin-top: 10px;

    }

    .sotto-articoli {
        flex-flow: column;
        width: 90%;
        margin-top: 10px;
    }

    .colonna-articoli-editoriali {
        max-width: 100%;
        
        margin-bottom: 10px;
       
    }


   

    .articoli .colonna-articoli-immagini {
        width: 100%;
        
    }

   
    .colonna-articoli-immagini .articolo {
        width: 48%;
    }



    .colonna-articoli-editoriali .title-articoli p {
        margin-top: 5px;
        margin-bottom: 10px;
        font-size: 4rem;
        color: white;

    }


    .colonna-editoriali .title-articoli p {
        margin-top: 5px;
        margin-bottom: 0px;
        font-size: 4rem;

    }

    .sotto-articoli .colonna-articoli-immagini {
        width: 90%;
        
    }

    .sotto-articoli .title-articoli p {
        font-size: 4rem;
    }

    

    
    
    .colonna-articoli-editoriali .sottotitolo-articoli p {
        margin-top: 0px;
        font-size: 3rem;

    }

    .colonna-editoriali .sottotitolo-articoli p {
        margin-top: 0px;
        font-size: 3rem;

    }


  



    .articolo .descrizione-immagine-articolo {
        font-size: 2.3rem;
        margin-bottom: 40px;
    }

    .articolo .autore-articolo {
        margin-top: 10px;
        font-size: 2rem;
    }


    .colonna-articoli-immagini .articolo {
        border: solid 3px rgba(255, 255, 255, 0.5);
    }

    .colonna-articoli-immagini .articolo:hover {
        border: solid 3px rgba(255, 255, 255, 1);
    }

    





    .collapsible {
       
        padding-right: 5vw;
        width: 100%;
       
    }

    .articolo-intero p {
    font-size: 3rem;
    font-weight: 400;
    
  }

    .footer-index a {
        font-size: 3rem;

    }
}