:root {
    --primary-color: #2c3e50;
    --accent-color: #3498db;
    --bg-color: #ffffff;
    --text-color: #333;
    --light-gray: #f4f4f4;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    margin: 0;
    background-color: var(--bg-color);
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

nav {
    background: var(--primary-color);
    padding: 1rem 0;
}

.nav-links {
    list-style: none;
    padding: 0;
    display: flex;
    gap: 20px;
}

.nav-links a {
    color: white;
    text-decoration: none;
    font-weight: 500;
}

.nav-links a.active {
    border-bottom: 2px solid var(--accent-color);
}

header {
    padding: 40px 0;
    border-bottom: 1px solid var(--light-gray);
}

/* Style the year headers (e.g., "2026", "2025") */
.bibtex_structure {
    font-size: 1.4rem;
    font-weight: 700;
    margin: 40px 0 15px 0;
    color: #2c3e50;
    border-bottom: 1px solid #eee;
    padding-bottom: 5px;
}

/* Target the display div specifically on the homepage */
.featured-pub #bibtex_display > div {
    display: none; /* Hide all papers by default */
}

.featured-pub #bibtex_display > div:first-child {
    display: block; /* Only show the first (most recent) paper */
    padding: 20px;
    background-color: #f8f9fa;
    border-left: 5px solid #3498db;
    border-radius: 4px;
}

.preprint {
    background-color: #f39c12; /* bioRxiv Orange */
    color: white;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: bold;
    text-transform: uppercase;
}

.first_author {
    background-color: #27ae60; /* Green for first author papers */
    color: white;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: bold;
    text-transform: uppercase;
}

.bio-image {
    float: left;
    margin-right: 20px;
    width: 150px;
    height: 150px;
    overflow: hidden;
    border-radius: 50%;
    object-fit: scale-down;
}

/* Container to align them in a row */
.contact-links {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 20px;
}

/* The Button Style */
.btn-academic {
    display: inline-flex;
    align-items: center;
    padding: 8px 16px;
    border: 1px solid #e0e0e0; /* Subtle border like your image */
    border-radius: 4px;
    color: #555; /* Neutral text */
    text-decoration: none;
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.2s ease;
    background-color: white;
}

/* Icon spacing */
.btn-academic i {
    margin-right: 8px;
    font-size: 1rem;
}

/* Hover State: Uses your theme's blue/primary color */
.btn-academic:hover {
    border-color: #3498db; /* Your accent blue */
    color: #3498db;
    background-color: #f7fbfe; /* Very light blue tint */
    transform: translateY(-1px); /* Subtle lift */
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

h1 { color: var(--primary-color); margin-bottom: 0.2em; }
.subtitle { font-size: 1.2rem; color: #666; margin-top: 0; }

main { padding: 40px 0; }

.project, .pub-list li {
    margin-bottom: 30px;
}

.pub-list { list-style: none; padding: 0; }

footer {
    text-align: center;
    padding: 20px 0;
    font-size: 0.9rem;
    color: #888;
    border-top: 1px solid var(--light-gray);
}

@media (max-width: 600px) {
    .nav-links { justify-content: center; }
}

/* CV Specific Header */
.cv-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
}

/* CV Sections */
.cv-section {
    margin-bottom: 50px;
}

.cv-section h2 {
    color: #2c3e50;
    border-bottom: 2px solid #f4f4f4;
    padding-bottom: 10px;
    margin-bottom: 25px;
    font-size: 1.5rem;
}

/* Timeline Item Layout */
.cv-item {
    display: flex;
    margin-bottom: 20px;
}

.cv-date {
    flex: 0 0 150px; /* Width of the date column */
    font-weight: 600;
    color: #7f8c8d;
    font-family: monospace; /* Matches your "pretty buttons" vibe */
}

.cv-content {
    flex: 1;
}

/* Simple List Style (for Awards) */
.cv-list {
    list-style: none;
    padding: 0;
}

.cv-list li {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid #fafafa;
}

.cv-list-date {
    color: #7f8c8d;
    font-family: monospace;
}

/* Responsive adjustments for phones */
@media (max-width: 600px) {
    .cv-item {
        flex-direction: column;
    }
    .cv-date {
        margin-bottom: 5px;
    }
    .cv-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 20px;
    }
}