@import url('https://fonts.googleapis.com/css2?family=Roboto:ital,wght@0,100;0,300;0,400;0,500;0,700;0,900;1,100;1,300;1,400;1,500;1,700;1,900&display=swap');

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    padding: 0;
    font-family: Roboto, sans-serif;
    font-weight: 300;
    font-size: 16px;
    line-height: 1.5;
    background-color: white;
    width: 100%;
    overflow-x: hidden;
}

a {
    color: #0086e6;
    text-decoration: none;
    transition: all 0.3s;
}

h1, h2, h3, h4, h5 {
    font-family: Roboto, sans-serif;
    font-weight: 300;
    padding: 0;
    margin: 0;
}

h1 { font-size: 4em; }
h2 { 
    font-size: 2em;
    margin-bottom: 0.5em; 
}
h3 { 
    font-size: 1.2em;
    font-weight: 500;
    margin-bottom: 0.5em; 
}
.subtitle { 
    font-size: 2em;
    margin: 10px; 
}

.container {
    margin: auto;
    max-width: 1000px;
    padding: 40px 20px;
}
.container img {
    border-radius: 10px;
    max-width: 90%;
    height: auto;
    margin-top: 20px;
}

.title-container {
    position: relative;
    width: 100vw;
    min-height: 20vw;
    padding: 40px 0;
    background-image: url("../img/teaser.jpg");
    background-size: cover;
    background-position: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.6);
    z-index: 1;
}
.content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: #333;
}

.subsection {
    margin-top: 20px;
    margin-bottom: 30px;
}

.highlight-box {
    border-radius: 0.5em;
    background-color: #f8f8f8;
    border-left: 4px solid #4285f4;
    padding: 15px;
    margin: 20px 0;
}

.nav {
    width: 100%;
    box-shadow: 0 2px 2px #888;
    font-size: 1.3em;
    position: sticky;
    top: 0;
    z-index: 10;
    background: white;
}
.nav-container {
    max-width: 1000px;
    margin: auto;
    padding: 10px;
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
}
.nav-logo {
    position: absolute;
    left: 1em;
    max-height: 40px;
}
.nav a {
    display: block;
    color: gray;
    margin: 5px 15px;
    position: relative;
    padding: 5px 0;
    white-space: nowrap;
}
.nav a:hover { color: black; }
.nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: #0086e6;
    transition: width 0.3s ease;
}
.nav a:hover::after { width: 100%; }

.section {
    margin-top: 0;
    padding-top: 0;
    margin-bottom: 30px;
    padding: 30px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
    scroll-margin-top: 100px;
}
.section:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

.img-container {
    text-align: center;
    margin: 25px 0;
    padding: 15px;
    background: #f9f9f9;
    border-radius: 12px;
}
.img-container img {
    max-width: 90%;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}
.img-container img:hover { transform: scale(1.02); }
.caption {
    color: #666;
    font-size: 0.95em;
    margin-top: 12px;
    font-style: italic;
}

.people {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    text-align: center;
}
.people > * {
    display: block;
    width: 140px;
    margin: 10px;
    text-decoration: none;
    color: inherit;
}
.people img {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    object-fit: cover;
}
.people .affiliation {
    font-size: 0.8em;
    color: #444;
}

.terrain-grid,
.call-topics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin: 30px 0;
}
.terrain-item { 
    text-align: center; 
}
.topic-card {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
    border-left: 4px solid #0086e6;
}

.important-dates {
    background: #e6f7ff;
    padding: 20px;
    border-radius: 10px;
    margin: 25px 0;
    border-left: 4px solid #0086e6;
}
.date-item {
    display: flex;
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 1px dashed #cce6ff;
}
.date-label {
    font-weight: 600;
    min-width: 200px;
    color: #0056b3;
}

.ref-header {
  font-weight: bold;
  list-style-type: none;
  margin-left: -1.4em;
}
.ref-paper {
  margin-bottom: 0.3em;
}
.ref-paper a {
  text-decoration: underline;
}

#reviewers ul {
    columns: 3;
    -webkit-columns: 3;
    -moz-columns: 3;
}

footer {
    background-color: #eee;
    text-align: center;
    padding: 1rem;
    font-size: 0.9rem;
    color: #666;
}

@media screen and (max-width: 1280px) {
    h1 { font-size: 3em; }
}

@media screen and (max-width: 768px) {
    h1 {
        font-size: 2.2em;
        font-weight: 400;
    }
    h2 { font-size: 1.3em; }
    h3 { font-size: 1em; }
    .subtitle { font-size: 1.1em; }
    .nav { font-size: 1em; }
    
    .nav-container {
        flex-direction: column;
        padding-top: 50px;
    }
    .nav-logo {
        position: absolute;
        top: 10px;
        left: 50%;
        transform: translateX(-50%);
    }
    .nav a {
        margin: 3px 10px;
        font-size: 0.9em;
    }
    
    .section { padding: 20px; }
    .terrain-grid,
    .call-topics { grid-template-columns: 1fr; }
}

table {
    border-spacing: 0;
    width: 100%;
}
td, th {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: left;
}
tr:nth-child(even) { background-color: #f2f2f2; }