.header__item {
    color: white;
    font-weight: bold;
    font-size: calc(var(--font-size-base) * 1.25);
    padding: var(--spacing-unit);
    position: relative;
    transition: all 0.25s;
    z-index: 4;
}

.header__item:hover { box-shadow: inset 0 -2px 0 0 white; }

.header__item--active { box-shadow: inset 0 -2px 0 0 white; }

.header__item::after {
    background-color: white;
    bottom: 0;
    content: "";
    height: 2px;
    position: absolute;
    left: 0;
    transition: all 0.25s ease-in-out;
    width: 0%;
}

.header__item:hover::after, .header__item--active::after { width: 100%; }

.return-button {
    background-color: transparent;
    border: none;
    font-weight: bold;
}

.return-button i {
    color: white;
}

.header__menu-button {
    display: none;
}

@media (max-width: 768px) {
    .header-links-container {
        display: none;
        position: absolute;
        top: 100%;
        right: 0;
        background: var(--color-primary);
        width: 100%;
        padding: 1rem;
        z-index: 1000;
    }

    .header-links-container.open {
        display: block;
    }

    .header__menu-button {
        display: block;
        background: none;
        border: none;
        color: inherit;
    }

    .header__menu-button i {
        color: white; 
    }

    .header-links {
        flex-direction: column;
    }

    .header-links .col-auto {
        width: 100%;
    }
}