/*  Reset */

*{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}
ul, li{
    list-style-type: none;
}
iframe{
    border: 0;
}
input {
    border-radius: 0;
    -webkit-appearance: none;
}
:focus{
    border: 0px;
    outline: none;
}
:root{
    --font-size-1: 1.5rem;
    --font-size-2: 15vw;
    --font-size-3: 2.5rem;
    --font-size-4: 10vw;
    --color: rgb(20, 20, 20);
    --color2: rgb(240, 240, 240);
    --font: 'permanent', Arial, Helvetica, sans-serif;
    --font2: 'permanent headline';
}
body.white{
    --color2: rgb(20, 20, 20);
    --color: rgb(240, 240, 240);
}

/*  Typography */

@font-face {
    font-family: 'permanent headline';
    src: url('fonts/permanent-headline.woff2') format('woff2'),
         url('fonts/permanent-headline.woff') format('woff');
    font-weight: normal;
    font-style: normal;
  	font-display: fallback; 
}
@font-face {
    font-family: 'permanent';
    src: url('fonts/permanent-regular.woff2') format('woff2'),
         url('fonts/permanent-regular.woff') format('woff');
    font-weight: normal;
    font-style: normal;
  	font-display: fallback; 
}
body, html, h1, h2, h3, h4, ::placeholder, input, button, small{
    font-family: var(--font);
    letter-spacing: 0.03em;
    font-size: 20px;
    line-height: 1.3em;
    font-weight: normal;
    font-style: normal;
}
body{
    background: var(--color);
    color: var(--color2);
}
h1{
    display: none;
}
a{
	color: inherit;
	text-decoration: none;
}
a:hover{
	color: inherit;
}
.border{
    position: relative;
    padding-bottom: 1.5em;
}
.border::after{
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--color2);
}
.content{
    padding-top: 4.5em;
}

/*  Nav */
nav{
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    align-items: center;
    display: flex;
    padding: 1em 1.5em 0 1.5em;
    z-index: 10;
    backdrop-filter: blur(1em);
    -webkit-backdrop-filter: blur(1em);
}
nav::before{
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color);
    opacity: 0.5;
}
nav ul{
    display: flex;
    margin: auto;
    width: 100%;
    justify-content: center;
    position: relative;
}
nav li{
    font-family: var(--font2);
    font-size: var(--font-size-3);
    text-transform: uppercase;
    line-height: 1em;
    letter-spacing: -1px;
    margin: 0;
}
nav li::after{
    content: ',';
    padding-right: 0.25em;
    margin-left: -0.25rem;
}
nav li:last-child::after{
    content: none;
}
nav li .active, nav li a:hover{
    position: relative;
    top: -0.2em;
}
nav .border::after{
    padding-bottom: 0;
}
footer{
    font-size: 0.75rem;
    padding: 0 1.5rem 2rem 1.5rem;
    display: flex;
    justify-content: space-between;
}


/* Home */
.claim{
    font-family: var(--font2);
    font-size: 15vw;
    letter-spacing: -0.05em;
    line-height: 0.9em;
    display: flex;
    height: 100%;
    flex-wrap: wrap;
    justify-content: space-between;
    column-gap: 4vw;
}
.claim span{
    padding: 0.5rem 1.5rem;
}
.claim .info{
    font-size: 4vw;
    letter-spacing: -0.01em;
    line-height: 1em;
    padding-top: 1em;
}
.empty{
    width: 0.5em;
}
.home-block{
    margin: 0 1.5em;
}

/*  List */
.list-item{
    position: relative;
    margin: 1.5em;
}
.list-item h3{
    font-family: var(--font2);
    font-size: var(--font-size-2);
    text-transform: uppercase;
    line-height: 1em;
    letter-spacing: -2px;
    text-align: center;
    padding: 3rem 0.5rem 5rem 0.5rem;
    cursor: pointer;
}
h3:hover{
    position: relative;
    top: -0.2rem;
}
.list-item-header{
    display: flex;
    justify-content: space-between;
    height: 2rem;
}
.list-item-header div{
    font-size: var(--font-size-1);
    line-height: 1.2em;
}
.list-item-abstract{
    height: 0;
    transition: height .5s ease;
    overflow: hidden;
}
.list-item-text{
    padding-bottom: 4em;
}
.paragraph{
    max-width: 40em;
    margin: auto;
}
.list-item-abstract-button{
    text-align: center;
    padding: 2em 0 1em 0;
}

.button{
    background: var(--color2);
    color: var(--color);
    border-radius: 1em;
    padding: 0.5rem 1.5rem;
    font-family: var(--font2);
    font-size: var(--font-size-1);
    line-height: 1.2em;
    text-transform: uppercase;
    box-shadow: 0 0 0.5em rgba(0, 0, 0, 0.8);
    margin: 0;
    position: relative;
}
.button:hover{
    color: var(--color);
    top: -0.2em;
}
.list-item-abstract-image{
    text-align: center;
    padding: 2em 0;
}
.list-item-abstract-image img{
    width: 100%;
    aspect-ratio: 3/2;
    object-fit: cover;
    filter: grayscale();
}
figcaption{
    font-size: 0.75rem;
    line-height: 1.2em;
    text-align: left;
    padding: 0.5em 0;
}

/*  About */
.card{
    margin: 1.5em;
    position: relative;
}
.no-header{
    padding-top: 2rem;
}
.card h2{
    font-family: var(--font2);
    font-size: var(--font-size-2);
    text-transform: uppercase;
    line-height: 1em;
    letter-spacing: -2px;
    text-align: center;
    padding: 3rem 0.5rem 5rem 0.5rem; 
}
.card-abstract{
    font-size: var(--font-size-1);
    line-height: 1.2em;
}
.card-abstract p{
    padding-bottom: 1em;
}
.card-abstract p:last-child{
    padding-bottom: 0;
}
.list-item h4{
    text-transform: uppercase;
    text-align: center;
    letter-spacing: 0.1em;
    padding: 2em 0 0.5em 0;
}
.list-item-logo{
    text-align: center;
    margin: 2em 0 0 0;
    filter: grayscale();
}
.list-item-logo img{
    height: 6em;
}
.white .list-item-logo img, .white .logos img{
    filter: invert();
}
.list-logos .list-item-text{
    padding-bottom: 2em;
}
.register-button{
    position: fixed;
    bottom: 0;
    left: 0;
    padding: 1.5rem;
    text-align: center;
    width: 100%;
}

/*  News grid */
.news-grid{
    padding: 1.5rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}
.news-grid-item{
    position: relative;
    padding: 1.5em 0 0 0;
}
.news-grid-item::after{
    top: 0;
    bottom: auto;
}
.news-grid-item-thumb img{
    width: 100%;
    aspect-ratio: 3/2;
    object-fit: cover;
    filter: grayscale();  
    background: lightslategray; 
    border: 0; 
}
.news-grid-item-thumb {
    padding-bottom: 2rem;
}
.news-grid-item-title h4{
    font-size: var(--font-size-1);
    line-height: 1.2em;
    padding: 0.25em 0 2em 0;
}
h2.news-title{
    font-size: var(--font-size-4);
    line-height: 1.1em;
    margin: auto;
}
.blocks{
    padding: 2em 1.5em;
}
.block-paragraph{
    padding: 1em 0;
}
.block-images img{
    width: 100%;
    aspect-ratio: 3/2;
    object-fit: cover;
    filter: grayscale();  
    background: lightslategray; 
    border: 0; 
}
.block-images figure, .block-vimeo{
    width: 100%;
    max-width: 40rem;
    margin: auto;
    padding: 2em 0;
}
.block-images[data-images="2"]{
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}
.vimeo{
    overflow: hidden;
    padding-bottom: 56.25%;
    position: relative;
    height: 0;
    background: #000;
    filter: grayscale();
}
.vimeo iframe{
    left: 0;
    top: 0;
    height: 100%;
    width: 100%;
    position: absolute;
    cursor: pointer;
}

/*  Partners */
.logos{
    padding: 3em 0 2em 0;
    display: flex;
    gap: 1em;
    flex-wrap: wrap;
    filter: grayscale();
}
.logos img{
    height: 5em;
}
.home .logos img{
    height: 2.5em;
}

/*  Media Query */
@media only screen and (max-width: 768px) {
    body, html, h1, h2, h3, h4, ::placeholder, input, button, small{
        font-size: 15px;
    }
    :root{
        --font-size-1: 1.2rem;
        --font-size-2: 15vw;
        --font-size-3: 2.5rem;
        --font-size-4: 12vw;
        --color: rgb(20, 20, 20);
        --color2: rgb(240, 240, 240);
        --font: 'permanent', Arial, Helvetica, sans-serif;
        --font2: 'permanent headline';
    }
    .logo{
        font-size: 15vw;
        line-height: 0.5em;
    }
    .claim{
        font-size: 20vw;
        letter-spacing: -0.05em;
        line-height: 0.75em;
        column-gap: 2vw;
        justify-content: space-between;
    }
    .claim .info{
        font-size: 6vw;
        letter-spacing: -0.01em;
        line-height: 1em;
    }
    .content{
        padding-top: 3em;
    }
    .card h2, .list-item h3{
        padding: 2rem 0.5rem 3rem 0.5rem;
    }
    .card, .list-item{
        margin: 1em 1.5em;
    }
    .list-item-text{
        padding-bottom: 2em;
    }
    .blocks{
        padding: 1em 1.5em;
    }
    .empty{
        width: 0em;
    }
    nav{
        min-height: 3em;
    }
    nav ul.border{
        padding-bottom: 2em;
    }
    nav ul{
        display: block;
    }
    nav ul li{
        display: none;
    }
    .menu-open nav ul{
        height: auto;
        position: relative;
    }
    .menu-open nav ul li{
        display: block;
    }
    nav li .active, nav li a:hover{
        position: relative;
        top: 0;
    }
    .menu-switch{
        z-index: 100;
        cursor: pointer;
        padding-bottom: 1em;
        position: absolute;
        top: 1em;
        right: 1.5em;
    }
    .menu-switch::after{
        content: 'Menu';
    }
    .menu-open .menu-switch::after{
        content: 'Close';
    }
    .news-grid, .block-images[data-images="2"] {
        grid-template-columns: 1fr;
    }
    .home .logos img{
        height: 2em;
    }
 }