:root {
    /* Your existing variables */
    --primary-color: #6b46c1;
    --secondary-color: #4a5568;
    --text-color: #2d3748;
    --light-color: #ffffff;
    --card-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    
    /* Add new typography variables */
    --font-xs: 0.75rem;
    --font-sm: 0.875rem;
    --font-base: 1rem;
    --font-lg: 1.125rem;
    --font-xl: 1.25rem;
    --font-2xl: 1.5rem;
}

/* Add to your existing navbar styles */
.navbar {
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.9);
}

.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}