.top-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--bg-white);
    box-shadow: var(--shadow-md);
    z-index: 1000;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 2rem;
}

.brand {
    display: flex;
    flex-direction: column;
}

.brand-name {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary-blue);
    letter-spacing: -0.5px;
}

.brand-tagline {
    font-size: 0.75rem;
    color: var(--text-light);
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.top-navigation {
    display: flex;
    gap: 2rem;
}

.nav-link {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-dark);
    padding: 0.5rem 0;
    border-bottom: 2px solid transparent;
    transition: border-color 0.3s ease, color 0.3s ease;
}

.nav-link:hover {
    color: var(--primary-blue);
    border-bottom-color: var(--primary-blue);
}

@media (max-width: 768px) {
    .header-inner {
        flex-direction: column;
        gap: 1rem;
    }
    
    .top-navigation {
        flex-wrap: wrap;
        justify-content: center;
        gap: 1rem;
    }
}