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

:root {
    --green-dark: #45B749;
    --green-medium: #C6DA20;
    --base-yellow: #F5E732;
    --orange-dark: #F1642A;
    --orange-medium: #FFBC2C;
    --dark-font: #2F403A;
    --blue-tint: #4A5E69;
    --off-white: #F7F7F7;
    --jumbo-header: 6vw;
    --jumbo-text: 3vw;
    --header:5vh;
    --content:3vh;
}

body {
    background-image: url("ifcos_new_logo.svg");
    background-size: 95vw auto;
    background-position: 50% 0%;
    background-repeat: no-repeat;
}

.container {
    width:100vw;
    height:100vh;
}


nav {
    background-color: var(--off-white);
    width:100vw;
    height:8vh;
    padding: 0 2vw;
    position: fixed;
    display: flex;
    justify-content: space-between;
    box-shadow: 2px 2px 10px rgba(128, 128, 128, 0.493);
    z-index: 1;
}

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 70%;
}

.logo a {
    text-decoration: none;
    color: black;
    font-size: 21px;
    font-weight: bold;
    text-align: center;
    justify-content: center;
    margin-left: 10px;
}

nav .menu {
    display: flex;
    flex-direction: row;
    align-self: center;
    width: fit-content;
    text-decoration: none;
    font-size: 18px;
}

nav .menu a {
    text-decoration: none;
    color: black;
    margin-right: 1rem;
    justify-items: space-evenly;
    position: relative;
}

nav .menu a:last-child {
    margin-right: 0;
}

nav .menu a::after {
    content: "";
    background-color: var(--orange-medium);
    border-radius: 2px;
    position: absolute;
    left: 0;
    top: 100%;
    width:100%;
    height: 5px;
    opacity: 0; 
    transition: ease-in-out 0.3s;
}

nav .menu a.selected::after {
    opacity: 0.8;
}

nav .menu a:hover::after {
    background-color: var(--green-dark);
    opacity: 0.8;
}

h1 {
    font-size: var(--jumbo-header);
    color: black;
}

h2 {
    font-size: var(--header);
    color: black;
    display: block;
}

.content {
    font-size: var(--content);
    color: var(--dark-font);
}

.subheader {
    font-size: var(--jumbo-text);
    color: var(--dark-font);
    font-weight: bolder;
}

.subheader span {
    font-weight: bold;
}

.jumbo {
    display: flex;
    justify-content: space-evenly;
    width:100vw;
    height:50vh;
    padding: 30vh;
}

.jumbo-text {
    width: 40vw;
}

.jumbo-graph {
    width: 30vw;
}

.abstract {
    display: inline-flex;
    height: 60vh;
    padding: 40vh 30vh;
}

.group h2{
    padding: 5vh 30vh;
}

.img-group {
    display: flex;
    justify-content: center;
}

.img-group img {
    width:30vw;
}

.card-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, 20rem);
    grid-template-rows: 20rem;
    column-gap:0.5rem;
    row-gap: 2rem;
    padding: 0rem 7rem;
    justify-content: center;
}

.card {
    width:17rem;
    height: 20rem;
    background: rgba( 255, 255, 255, 0.25 );
    box-shadow: 0 8px 32px 0 rgba( 31, 38, 135, 0.37 );
    backdrop-filter: blur( 5px );
    -webkit-backdrop-filter: blur( 5px );
    border-radius: 10px;
}

footer {
    margin-top: 5vh;
    height:10vh;
    width:100vw;
    background-color: var(--blue-tint);
    color: var(--off-white);
}