/* Academic conference website styling */
body { 
    font-family: 'Roboto', sans-serif; 
    line-height: 1.6; 
    color: #333;
}

h1, h2, h3 { 
    color: #2c3e50; 
    font-weight: 600; 
    margin-bottom: 1rem;
}

.lead { 
    font-size: 1.1rem; 
    color: #555; 
    margin-bottom: 1.5rem;
}

.card { 
    border: none; 
    box-shadow: 0 2px 4px rgba(0,0,0,0.1); 
    transition: box-shadow 0.2s ease;
}

.card:hover {
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.navbar-brand { 
    font-weight: bold; 
    color: #2c3e50 !important; 
}

.btn-primary { 
    background: #3498db; 
    border: none; 
    border-radius: 4px;
}

.btn-primary:hover {
    background: #2980b9;
}

.btn-outline-primary {
    color: #3498db;
    border-color: #3498db;
}

.btn-outline-primary:hover {
    background: #3498db;
    border-color: #3498db;
}

.text-muted { 
    color: #666 !important; 
}

code { 
    background: #f8f9fa; 
    padding: 2px 4px; 
    border-radius: 3px; 
    font-family: 'Monaco', 'Consolas', monospace;
    font-size: 0.9em;
}

.hero-section {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 8px;
    margin-bottom: 2rem;
}

.badges .badge {
    font-size: 0.9em;
    margin: 0 0.25rem;
}

.session-title {
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.topics-list {
    color: #555;
    padding-left: 1.2rem;
}

.topics-list li {
    margin-bottom: 0.3rem;
}

.speaker-photo {
    margin-bottom: 1rem;
}

.speaker-name {
    color: #2c3e50;
    font-weight: 600;
}

.speaker-affiliation {
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.speaker-bio {
    font-size: 0.95rem;
    line-height: 1.5;
}

.list-group-item {
    border: 1px solid #e9ecef;
    border-radius: 4px !important;
    margin-bottom: 0.5rem;
}

.list-group-item:hover {
    background-color: #f8f9fa;
}

.material-title {
    color: #2c3e50;
    font-weight: 600;
}

.material-format {
    color: #666;
    font-size: 0.8rem;
}

.reading-title {
    color: #2c3e50;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.reading-authors {
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
}

.bibtex-content {
    font-family: 'Monaco', 'Consolas', monospace;
    font-size: 0.8rem;
    width: 100%;
    height: auto;
    border: none;
    background: #f8f9fa;
    padding: 0.5rem;
    border-radius: 3px;
}

footer {
    border-top: 1px solid #e9ecef;
    margin-top: 3rem;
}

footer a {
    color: #3498db;
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .hero-section {
        padding: 2rem 1rem;
    }
    
    .btn-sm {
        font-size: 0.8rem;
        padding: 0.25rem 0.5rem;
    }
    
    .card-body {
        padding: 1rem;
    }
}

/* Navigation enhancements */
.navbar-nav .nav-link {
    font-weight: 500;
    color: #2c3e50 !important;
    transition: color 0.2s ease;
}

.navbar-nav .nav-link:hover {
    color: #3498db !important;
}

.navbar-nav .nav-link.active {
    color: #3498db !important;
}