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

body {
    background-color: rgb(20, 20, 20);
    color: white;
    font-family: monospace;
}


/* HEADER */ 
header {
    position: fixed;
    top: 0;
    left: 0;
    height: 100px;
    width: 100%;
    padding: 20px 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 1em;
    background-color: rgba(20, 20, 20, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px); 
    z-index: 1000;
}

#buttons .indexButton {
    font-family: Helvetica, sans-serif;
    border: none;
    background-color: rgba(128, 128, 128, 0.3);
    color: white;
    border-radius: 8px;
    text-align: center;
    padding: 8px 10px;
    text-decoration: none;
    font-size: 14px;
    display: inline-block;    
    text-transform: uppercase;
    cursor: pointer;
}

#buttons .indexButton:hover {
    background-color: rgba(255, 255, 255, 0.3);
}

#input_container {
    font-family: Helvetica, sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px;
    border-radius: 8px;
}

#input {
    display: flex;
    align-items: center;
    font-family: Helvetica, sans-serif;
    background-color: transparent;
    font-size: 14px;
    color: white;
    border: 1px solid #5064ff; 
    border-radius: 8px;
}

#input_utente {
    font-family: Helvetica, sans-serif;
    background-color: transparent;
    font-size: 14px;
    color: white;
    border: 1px solid #00000000;
    padding: 8px 10px;
    text-align: left;
    outline: none;
}

#input:focus-within {
    box-shadow: 0 0 10px #5064ff;
    border: 1px solid #5064ff;
}

#up {
    margin-left: 10px;
    border: 1px solid #00000000;
    background-color: #ffffff00;
    color: white;
    border-radius: 8px;
    text-align: center;
    padding: 5px 8px;
    font-size: 18px;
    display: inline-block;    
    text-transform: uppercase;
    cursor: pointer;
}

#up.uppercase-active {
    color: white;
}

#buttons {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px;
}

#buttons .b1 {
    font-family: Helvetica, sans-serif;
    margin-left: 10px;
    border: 1px solid white;
    background-color: #ffffff00;
    color: white;
    border-radius: 8px;
    text-align: center;
    padding: 8px 10px;
    text-decoration: none;
    font-size: 14px;
    display: inline-block;    
    text-transform: uppercase;
    cursor: pointer;
}

#buttons .b1:hover {
    background-color: rgba(255, 255, 255, 0.4);
}

#buttons .b1.active {
    color: black;
    background-color: white;
}

#buttons .b2 {
    font-family: Helvetica, sans-serif;
    margin-left: 10px;
    border: none;
    background-color: #5064ff;
    color: white;
    border-radius: 8px;
    text-align: center;
    padding: 8px 10px;
    text-decoration: none;
    font-size: 14px;
    display: inline-block;    
    text-transform: uppercase;
    cursor: pointer;
}

#buttons .b2:hover {
    background-color: #142fff;
}


/* METADATI */
.metadata span:first-child { /*nome font*/
    font-weight: bold; 
    font-size: 14px; 
    margin-bottom: 8px;
}

.metadata span:nth-child(2) { /*categoria font*/ 
    font-size: 12px;
}

.metadata span:nth-child(3) { /*sottocategoria font*/ 
    font-style: italic;
    font-size: 12px; 
    margin-bottom: 8px;
    border-bottom: 1px solid rgb(50, 50, 50);
}

.metadata span:nth-child(4) { /*autore*/ 
    font-size: 12px; 
}

.metadata span:nth-child(5) { /*anno*/ 
    font-size: 12px; 
}

.metadata span:nth-child(6) { /*luogo*/ 
    font-size: 12px; 
    margin-bottom: 8px;
    border-bottom: 1px solid rgb(50, 50, 50);
}

.metadata span:nth-child(7) { /*utilizzo*/ 
    color: gray;
    font-size: 12px; 
}


/*CATEGORIA*/
h1 {
    font-size: 24px;
    margin-top: 100px;
    margin-bottom: 20px;
}

main {
    margin-top: 200px;
    margin-left: auto;
    margin-right: auto;
    max-width: 90%;
    z-index: 1;
}

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

::-webkit-scrollbar-thumb {
    background-color: rgba(255, 255, 255, 0.200);
    border-radius: 10px;
}

.categoria {
    display: flex;
    max-width: 100%;
    justify-content: flex-start;
    width: auto;
    flex-wrap: wrap;
    margin-bottom: 3rem;
    overflow-y: auto;
    position: relative;
    z-index: 1;
}

.info {
    margin-right: 20px;
    margin-bottom: 20px;
    position: relative;
    line-height: 1.5;
}

.categoria img {
    width: 200px;
    display: block;
    border: 1.2px solid black;
    position: relative;
}

.metadata {
    padding: 8px;
    display: none;
    top: 0;
    background-color: rgb(0, 0, 0);
    z-index: 1;
    width: 200px;
    height: 200px;
    position: absolute;
    box-shadow: inset 0 0 0 1.5px white;
    left: 0;
}

.info:hover .metadata {
    display: block;
}

.metadata span {
    color: rgb(255, 255, 255);
    display: block;
}


/*FOOTER*/
footer {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    margin-top: 200px;
    height: auto;
    background-color: rgb(20, 20, 20);
    text-align: center;
    padding: 40px 60px;
    width: 100%;
    border-top: 1px solid white;
}

.footer-name {
    grid-column: 1 / span 2;
    font-size: 18px;
    text-align: left;  
}

.footer-text {
    grid-column: 1 / span 2;
    flex: 1;
    font-size: 14px;
    text-align: left;  
    padding-top: 80px;
}


/*RESPONSIVE*/
@media screen and (max-width: 1024px){

    header {
        position: fixed;
        height: auto;
        width: 100%;
        padding: 20px 20px;
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        justify-content: space-between;
        font-size: 1em;
    }

    #buttons {
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
    }

    #buttons .b1 {
        margin-left: 6px;
        border-radius: 6px;
        padding: 6px 8px;
        font-size: 12px;
        margin-bottom: 20px;
    }

    #buttons .b2 {
        margin-left: 6px;
        border-radius: 6px;
        padding: 6px 8px;
        font-size: 12px;
        margin-bottom: 20px;
    }

    .indexButton{
        margin-left: 6px;
        border-radius: 6px;
        padding: 6px 8px;
        font-size: 12px;
        margin-bottom: 10px;
    }

    #input {
        font-size: 12px;
        border-radius: 6px;
        margin-bottom: 10px;
    }
    
    #input_utente {
        font-size: 12px;
        padding: 6px 8px;
    }

    main {
        margin-top: 200px;
        margin-left: 20px;
        margin-right: 20px;
        max-width: 90%;
        z-index: 1;
    }

    .info {
        margin-right: 10px;
        margin-bottom: 10px;
        position: relative;
        line-height: 1.5;
    }
    
    .categoria img {
        width: 100px;
        display: block;
        border: 1.2px solid black;
        position: relative;
    }
    
    .metadata {
        padding: 8px;
        display: none;
        top: 0;
        background-color: rgb(0, 0, 0);
        z-index: 1;
        width: 100px;
        height: 100px;
        position: absolute;
        box-shadow: inset 0 0 0 1.5px white;
        left: 0;
    }

    .info:hover .metadata {
        display: block;
    }
    
    .metadata span:first-child { /*nome font*/
        font-size: 10px; 
        margin-bottom: 6px;
    }
    
    .metadata span:nth-child(2) { /*categoria font*/ 
        font-size: 8px;
    }
    
    .metadata span:nth-child(3) { /*sottocategoria font*/ 
        font-size: 8px; 
        margin-bottom: 6px;
    }
    
    .metadata span:nth-child(4) { /*autore*/ 
        font-size: 8px; 
    }
    
    .metadata span:nth-child(5) { /*anno*/ 
        font-size: 8px; 
    }
    
    .metadata span:nth-child(6) { /*luogo*/ 
        display: none;
    }
    
    .metadata span:nth-child(7) { /*utilizzo*/ 
        display: none;
    }
}