/* Fix header logo sizing */
.pkp_site_name .is_img img {
    max-height: 55px !important;  /* Locks logo height so it fits the navbar */
    width: auto !important;       /* Preserves aspect ratio without stretching */
    display: inline-block;
    vertical-align: middle;
}

/* Adjust header bar padding and background */
.pkp_structure_head {
    background-color: #0f172a !important; /* Professional dark slate */
    padding: 0.75rem 2rem !important;
    border-bottom: 2px solid #2563eb;     /* Modern tech-blue accent line */
}

/* Improve header navigation typography */
.pkp_navigation_primary > li > a {
    color: #e2e8f0 !important;
    font-size: 0.95rem;
    font-weight: 500;
}

.pkp_navigation_primary > li > a:hover {
    color: #38bdf8 !important;
}

/* Give main container modern academic padding and card look */
.pkp_structure_content {
    max-width: 1200px !important;
    margin: 2rem auto !important;
    background: #ffffff;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    padding: 2rem !important;
}