body {
    background-color: #f8f9fa;
    font-family: 'Segoe UI', Arial, sans-serif;
    padding: 0em 4.5rem 4rem 4rem;
    min-width: 13rem;
    xline-height: 1.5;
}
header {
    position:fixed; 
    top:0; 
    left:0; 
    width:100%; 
    background:#2c3e50; 
    color:#fff; 
    padding:0.2rem 0; 
    text-align:center; 
    z-index:1000; 
    box-shadow:0 2px 8px rgba(44,62,80,0.08);
    min-height: 2rem;
    xline-height: 1rem;
}
header span {
    display:block;
    font-size:2rem; 
    font-weight:bold; 
    color:white;
}
header span.sub {
    font-size:1rem; 
    margin-bottom: 0.2rem;
    white-space: nowrap;
}
h1,h2 {
    color: #2c3e50;
    font-size: 1.3rem;
    font-weight: bold;
    margin: 2rem 0em 1rem 0em;
}
h2 {
    font-size: 1.1rem;
}
h3 {
    color: #2c3e50;
    font-size: 1rem;
    font-weight: bold;
    margin-top: 2rem;
}
p {
    color: #34495e;
    line-height: 1.5;
}
li {
    color: #34495e;
    margin-bottom: 0.4rem;
    line-height: 1.5;
}
.paper-listing {
    margin-bottom: 0.8rem;
}
.paper-listing span {
    display: block;
    font-size: 0.9rem;
    color: #7f8c8d;
}
.source {
    font-size: 0.9rem;
    color: #7f8c8d;
    font-style: italic;
}
.copy {
    font-size: 0.9rem;
    color: #7f8c8d;
    font-style: italic;
    margin-top:3rem;
}
a {
    color: black;
}
.container-gap {
    height:5rem;
}
.container {
    background: #fff;
    padding: 0.1rem 2.5rem 2rem 2.5rem;
    margin-top: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(44,62,80,0.08);
}
.navbar {
    min-height: 2rem !important;
    height: 2rem !important;
    position:fixed; 
    top:4rem; 
    left:0; width:100%; 
    background:#4e6e8d; 
    z-index:999;
    font-size: 0.8rem
}
.navbar-nav {
    list-style: none;
    flex-direction: row;
    margin: 0.6rem 0rem 0rem 0rem;
    white-space: nowrap;
}
.navbar-nav .nav-item {
    margin: 0rem 0.2rem;
    display: inline;
}
.navbar-nav .nav-item a {
    text-decoration: none;
}
.navbar-nav .nav-link {
    padding: 0rem 1rem 0rem 0rem;
    transition: background 0.2s, color 0.2s;
    border-radius: 4px;
    color: white !important;
}
.navbar-nav .nav-link:hover,
.navbar-nav .nav-link:focus {
    background: #2c3e50;
    color: #ffd700 !important;
}
.navbar-nav .nav-link.active {
    background: #ffd700;
    color: #2c3e50 !important;
}
.nav-link svg {
    vertical-align: middle; 
    margin-top: -0.2em;
    margin-right: 0.3em;
    color: white
}

@media (max-width: 800px) {
    body {
        padding: 0em 1.5rem 1rem 1.5rem;
    }
}

@media (max-width: 600px) {
    body {
        padding: 0em 0.5rem 1rem 0.5rem;
    }
    header span.sub {
        display: none;
    }
    .navbar {
        top:2.5rem;
        font-size: 0.7rem;
    }
    .navbar-nav {
        margin-left: -1.5rem;
    }
    .navbar-nav .nav-link {
        padding-right: 0rem;
    }
    .nav-link svg {
        width: 16px;
        height: 16px;
        margin-right: 0.1em;
    }
    .container {
        padding: 1rem 1.5rem;
        margin-top: 1rem;
    }
}