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

body {
    margin: 0 auto;
    width: 900px;
    padding: 40px;
    font-size: 16px;
    font-family: sans-serif;
    line-height: 1.5;
    color: #444444;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.greybox{
  padding-left: 20px;
  padding-right: 20px;
  padding-top: 10px;
  padding-bottom:10px;
  background-color: #e0e0e0;
  border-radius: 10px
}

.subheader{
  color: grey;
  font-weight: bold;
}

.accent-gradient{
  background: linear-gradient(90deg,
    #f39c12 0%,
    #27ae60 33%,
    #2980b9 66%,
    #8e44ad 100%
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.people{
  column-count: 2; 
  padding-top: 20px;
}

@media (max-width: 768px) {
  .people {
    column-count: 1;
  }
}

.author-info {
    text-align: center;
    max-width: 800px;
    margin: 1.5rem auto 0;
}

.author-list {
    margin-bottom: 0.8rem;
    line-height: 1.6;
}

.author {
    display: inline-block;
    color: white;
    font-size: 1rem;
    font-weight: 400;
    margin: 0 0.5rem;
    padding: 0.2rem 0;
    opacity: 0.95;
}

.author:not(:last-child)::after {
    content: " •";
    color: rgba(255, 255, 255, 0.7);
    margin-left: 0.5rem;
}

.author sup {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
}

.affiliations {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 0.5rem;
}

.affiliations p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
    margin: 0;
    font-style: italic;
}

affiliations sup {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
    font-style: normal;
}

.master-title{
  font-size: 40px;
  color: #0066ff;
  font-weight: bold;
  /* Multilingual gradient styling */
  background: linear-gradient(90deg,
    #f39c12 25%,  /* orange */
    #27ae60 50%,  /* green */
    #2980b9 75%,  /* blue */
    #8e44ad 100%  /* purple */
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent; /* reveal gradient through text */
  display: inline-block;
  position: relative;
}


.nav-items {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    padding: 1rem 0;
    flex-wrap: wrap;
}

.paragraph {
  padding-top: 5px;
  padding-bottom: 10px;
}

.bullet{
  padding-left: 20px;
  padding-bottom: 10px;
}

.nav-link:active {
    transform: translateY(0);
}

.nav-link[target="_blank"]::after {
    content: " ↗";
    font-size: 0.8em;
    opacity: 0.7;
    margin-left: 0.2em;
}

.title{
  padding-top: 20px;
  font-size: 20px;
  color: #0066ff;
  font-weight: bold;
  border-bottom: 2px dotted grey;
}

.map-container {
    position: relative;
    width: 100%;
    height: 500px;
    overflow: hidden;
}

a:link {
  color: #0066ff;
  text-decoration: none;
}

a:visited {
  color: #0066ff;
}

a:hover {
  color: #cc66ff;
}

#navbar {
  font-size: 20px;
  margin-top: 12px;
}

.icon {
  width: 18px;
  height: 18px;
  vertical-align: -3px; /* align with text baseline */
}

.icon-label {
  margin-left: 6px;
}

.emoji-icon {
  font-size: 18px;
  line-height: 1;
  vertical-align: -2px;
}

#title {
  font-size: 30px;
  color: #0066ff;
  font-weight: bold; 
}

#row-title {
  font-size: 20px;
  color: #0066ff;
  font-weight: bold; 

}

.footer{
  padding-top: 20px;
  color: grey;
}

.row::after {
  content: "";
  clear: both;
  display: table;
}

#headshot {
  float:left;
  padding-right: 6px;
}

hr {
  border-top: 1px solid gray;
}

.column {
  float: left;
  width: 45%;
  padding: 5px;
}

.leaflet-container {
    cursor: grab;
}

.leaflet-container.leaflet-drag-target {
    cursor: grabbing;
}

.leaflet-container {
    position: relative;
}

.language-label {
    background: none !important;
    border: none !important;
    box-shadow: none !important;
}

.map-container {
    position: relative;
    width: 100%;
    height: 500px;
    overflow: hidden;
}

#map {
    width: 100%;
    height: 100%;
}

.map-toggle-control {
    background: rgba(255, 255, 255, 0.9);
    border-radius: 8px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
    padding: 8px 10px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 12px;
    color: #2c3e50;
    text-transform: lowercase;
}

.map-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
    margin: 0;
}

.map-toggle input[type="checkbox"] {
    width: 14px;
    height: 14px;
    cursor: pointer;
}

.map-toggle span {
    cursor: pointer;
}

.language-legend {
    background: rgba(255, 255, 255, 0.92);
    padding: 5px 7px 6px;
    border-radius: 5px 0 0 5px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.18);
    max-width: 220px;
    max-height: 90px;
    font-size: 10px;
    line-height: 1.35;
    color: #2c3e50;
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.legend-title {
    font-weight: 600;
    font-size: 10px;
    margin: 0;
    letter-spacing: 0.02em;
}

.legend-items {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 3px 8px;
    overflow-y: auto;
    max-height: 58px;
    padding-right: 2px;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 5px;
    min-width: 0;
}

.legend-swatch {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    border: 1px solid rgba(0, 0, 0, 0.12);
    flex-shrink: 0;
}

.legend-label {
    flex: 1;
    display: block;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.legend-items::-webkit-scrollbar {
    width: 5px;
}

.legend-items::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.15);
    border-radius: 999px;
}

.legend-items::-webkit-scrollbar-track {
    background: transparent;
}

.legend-empty {
    font-style: italic;
    color: #7f8c8d;
    padding: 4px 0;
}

.label-text {
    background: rgba(255, 255, 255, 0.9);
    color: #2c3e50;
    padding: 2px 6px; /* reduce internal padding to visually tighten spacing */
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    white-space: nowrap;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
    border: 1px solid rgba(0,0,0,0.1);
    display: inline-block;
    pointer-events: none;
}

.blog-section {
    background: #0b0f1a;
    min-height: 60vh;
    padding: 3rem 0;
}

.research-paper {
    background: #0f1629;
    border-radius: 10px;
    border: 1px solid rgba(255,255,255,0.06);
    box-shadow: 0 10px 30px rgba(0,0,0,0.35);
    overflow: hidden;
}

.paper-header {
    background: radial-gradient(800px 400px at 10% -10%, rgba(99,102,241,0.12) 0%, rgba(99,102,241,0) 60%),
                radial-gradient(800px 400px at 90% -10%, rgba(236,72,153,0.12) 0%, rgba(236,72,153,0) 60%),
                #0f1629;
    padding: 2rem;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.paper-header h2 {
    color: #f3f4f6;
    font-size: 1.9rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.paper-meta {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
    color: #a3aab8;
    font-size: 0.9rem;
}

.paper-meta span {
    display: flex;
    align-items: center;
    font-weight: 500;
}

.paper-content {
    padding: 2rem;
}

.paper-content section {
    margin-bottom: 2.5rem;
}

.paper-content h3 {
    color: #e5e7eb;
    font-size: 1.2rem;
    margin-bottom: 1rem;
    font-weight: 600;
    border-left: 4px solid #6366f1;
    padding-left: 1rem;
}

.paper-content p {
    color: #cbd5e1;
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 1rem;
}

.footer p {
    font-size: 0.9rem;
    opacity: 0.8;
}

@media (max-width: 768px) {
    .header h1 {
        font-size: 2rem;
    }
    
    .nav-items {
        gap: 1rem;
        padding: 0.8rem 0;
    }
    
    .nav-link {
        font-size: 0.9rem;
        padding: 0.4rem 0.8rem;
    }
    
    .map-container {
        height: 400px;
    }
    
    .paper-meta {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .paper-header,
    .paper-content {
        padding: 1.5rem;
    }
    
    .container {
        padding: 0 15px;
    }
    
    .author-info {
        margin: 1rem auto 0;
    }
    
    .author {
        font-size: 0.9rem;
        margin: 0 0.3rem;
    }
    
    .affiliations {
        flex-direction: column;
        gap: 0.3rem;
        align-items: center;
    }
    
    .affiliations p {
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .header h1 {
        font-size: 1.7rem;
    }
    
    .nav-items {
        gap: 0.5rem;
        padding: 0.6rem 0;
    }
    
    .nav-link {
        font-size: 0.8rem;
        padding: 0.3rem 0.6rem;
    }
    
    .map-container {
        height: 300px;
    }
    
    .paper-header h2 {
        font-size: 1.5rem;
    }
}

.map-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    font-size: 1.1rem;
    color: #6c757d;
}

.loading-spinner {
    border: 3px solid #f3f3f3;
    border-top: 3px solid #667eea;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    animation: spin 1s linear infinite;
    margin-right: 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.legend-control {
    background: rgba(255, 255, 255, 0.95);
    border: 2px solid #ddd;
    border-radius: 8px;
    padding: 15px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    max-width: 250px;
    backdrop-filter: blur(10px);
}

.map-legend h4 {
    margin: 0 0 12px 0;
    color: #2c3e50;
    font-size: 16px;
    font-weight: 600;
    text-align: center;
    border-bottom: 2px solid #ecf0f1;
    padding-bottom: 8px;
}

.legend-item {
    display: flex;
    align-items: center;
    margin-bottom: 8px;
    padding: 4px 0;
}

.legend-color {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    margin-right: 10px;
    border: 2px solid rgba(255, 255, 255, 0.8);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
    flex-shrink: 0;
}

.legend-label {
    font-size: 13px;
    color: #34495e;
    font-weight: 500;
    flex: 1;
}

.legend-item:last-child {
    margin-bottom: 0;
}

@media (max-width: 768px) {
    .legend-control {
        max-width: 200px;
        padding: 10px;
    }
    
    .map-legend h4 {
        font-size: 14px;
    }
    
    .legend-label {
        font-size: 12px;
    }
    
    .legend-color {
        width: 14px;
        height: 14px;
    }
}