header {
    position: sticky;
    top: 0;
    background-color: var(--primary-color);
    color: var(--font-white);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    z-index: 1000;
}

.logo {
    font-size: 1.4rem;
    font-weight: bold;
}

nav {
    display: flex;
    gap: 1.5rem;
}

nav a {
    color: var(--font-white);
    text-decoration: none;
    font-weight: 500;
    transition: opacity var(--transition-fast);
}

nav a:hover {
    opacity: 0.8;
}