* { font-family: 'Inter', sans-serif; }
        .font-serif { font-family: 'Playfair Display', Georgia, serif; }
        .sidebar-active { background: linear-gradient(90deg, rgba(30, 64, 175, 0.1) 0%, rgba(30, 64, 175, 0) 100%); border-left: 3px solid #1E40AF; color: #1E40AF; }
        .certificate-card:hover { transform: translateY(-4px); box-shadow: 0 20px 40px -12px rgba(0,0,0,0.15); }
        .mobile-sidebar { transform: translateX(-100%); transition: transform 0.3s ease; }
        .mobile-sidebar.open { transform: translateX(0); }
        .modal { display: none; }
        .modal.active { display: flex; }
        /* Certificate Border Styles */
        .cert-border-outer { border: 8px solid #1E3A8A; }
        .cert-border-inner { border: 3px solid #C9A227; }
        .cert-corner { position: absolute; width: 40px; height: 40px; border-color: #9CA3AF; }