/* Sidebar logo styling */
.sidebar-logo {
    text-align: center;
    padding: 1.5rem 1rem;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--table-border-color);
    background: var(--sidebar-bg);
    position: sticky;
    top: 0;
    z-index: 1;
}

.sidebar-logo img {
    max-width: 160px;
    max-height: 80px;
    width: auto;
    height: auto;
    display: block;
    margin: 0 auto;
    transition: transform 0.2s ease;
}

.sidebar-logo a {
    text-decoration: none;
    display: inline-block;
}

.sidebar-logo a:hover img {
    transform: scale(1.05);
}

/* Ensure proper spacing after logo */
.sidebar-logo + .chapter {
    margin-top: 0;
}

/* Make sure the first chapter item doesn't have extra top margin */
.chapter:first-of-type {
    margin-top: 0;
}

/* Mobile adjustments */
@media (max-width: 768px) {
    .sidebar-logo {
        padding: 1rem 0.5rem;
    }
    
    .sidebar-logo img {
        max-width: 120px;
        max-height: 60px;
    }
}

/* Dark theme adjustments for better visibility */
.navy .sidebar-logo,
.coal .sidebar-logo,
.ayu .sidebar-logo {
    border-bottom-color: rgba(255, 255, 255, 0.1);
}

.light .sidebar-logo,
.rust .sidebar-logo {
    border-bottom-color: rgba(0, 0, 0, 0.1);
}