.btn-3D {
    position: absolute;
    top: 20px;
    right: 20px;
}

/* Publications specific styles */
.publications-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 40px 20px;
    font-family: 'Raleway', sans-serif;
    line-height: 0.6;
    background-color: #f8f8f8;
}

.publications-header {
    text-align: center;
    margin-bottom: 50px;
}

/* Category Filter Styles */
.category-filter {
    text-align: center;
    margin-top: 30px;
    margin-bottom: 20px;
}

.filter-categories {
    display: inline-block;
}

.filter-btn {
    display: inline-block;
    padding: 8px 16px;
    margin: 0 8px 8px 0;
    background: transparent;
    border: 2px solid #ddd;
    border-radius: 25px;
    color: #666;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
}

.filter-btn:hover {
    border-color: #8B1538;
    color: #8B1538;
    background: rgba(139, 21, 56, 0.1);
}

.filter-btn.active {
    background: #8B1538;
    border-color: #8B1538;
    color: white;
}

.filter-btn.active:hover {
    background: #6B1028;
    border-color: #6B1028;
}

.year-section {
    margin-bottom: 50px;
}

.year-header {
    font-size: 1.8rem;
    font-weight: 500;
    color: #8B1538;
    border-bottom: 2px solid #8B1538;
    padding-bottom: 10px;
    margin-bottom: 30px;
}

.publication {
    margin-bottom: 15px;
    padding-bottom: 3px !important;
    padding: 20px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.publication:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

.publication-header {
    display: flex;
    align-items: flex-start;
    gap: 30px;
    margin-bottom: 15px;
}

.publication-video-large {
    flex: 0 0 320px; /* Fixed width for video */
    height: 180px; /* 16:9 aspect ratio */
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
    background: #f0f0f0;
}

.publication-video-large iframe {
    width: 100%;
    height: 100%;
    border: 0;
}

.publication-text {
    flex: 1;
    min-width: 0; /* Allow text to shrink */
}


.publication-title {
    font-size: 1.1rem;
    margin: 0 0 12px 0;
    line-height: 0.5;
    font-weight: 500;
}

.publication-title a {
    color: #333;
    text-decoration: none;
    transition: color 0.3s ease;
}

.publication-text .publication-title a {
    font-size: 1.2rem !important;
    line-height: 1.2;
    margin-top: 0.2rem !important;
    margin-bottom: 0.4rem;
    font-weight: 700 !important;  /* force bold */
}


/* Force reset margins around publication title */
.publications-container .publication .publication-text h3.publication-title {
    margin-top: 0 !important;
    margin-bottom: 0 !important;
    padding-top: 0 !important;
}

.publication-title a:hover {
    color: #8B1538;
}

.publication-venue {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 8px;
    font-style: italic;
}

.publication-authors {
    font-size: 0.85rem;
    color: #555;
    line-height: 1.4;
}

.publication-links {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    margin-top: 15px;
}

.publication-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 15px;
    background: #8B1538;
    color: white;
    text-decoration: none;
    border-radius: 4px;
    font-size: 0.9rem;
    transition: background-color 0.3s ease;
}

.publication-link:hover {
    background: #6B1028;
    color: white;
}

.publication-link .icon {
    font-size: 0.9rem;
    font-weight: normal;
}

.special-designation {
    display: inline-block;
    background: #FF6B35;
    color: white;
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
    margin-left: 10px;
}

.spotlight {
    background: #4CAF50;
}

.oral {
    background: #FF9800;
}

.best-paper {
    background: #9C27B0;
}

.publication-abstract {
    font-size: 0.95rem;
    line-height: 1.2;
    color: #666;
    margin-top: 15px;
    padding: 15px;
    background: #f9f9f9;
    border-left: 4px solid #8B1538;
    border-radius: 0 4px 4px 0;
    display: none;
}

.show-abstract {
    color: #8B1538;
    cursor: pointer;
    font-size: 0.9rem;
    margin-top: 10px;
    text-decoration: underline;
}

.show-abstract:hover {
    color: #6B1028;
}

/* Responsive design */
@media (max-width: 768px) {
    .publications-container {
        padding: 20px 15px;
    }

    .publication-header {
        flex-direction: column;
        align-items: stretch;
        gap: 20px;
    }

    .publication-video-large {
        flex: none;
        height: 200px;
    }

    .publication {
        padding: 15px;
    }

    .publication-title {
        font-size: 1rem;
    }

    .year-header {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .publication-video-large {
        height: 180px;
    }

    .publication-links {
        justify-content: flex-start;
    }
}