.header-menu {
    display: flex;
}
.header-menu__link {
    position: relative;
    z-index: 2;
    padding: 8px;
    color: var(--color-dark-blue);
    font-size: var(--font-size-title-3);
    font-weight: 700;
    line-height: var(--line-height-title-3);
    opacity: 1;
    text-decoration: none;
    transition: opacity 0.3s ease-out;
}
.header-menu__link::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    border-bottom: 2px solid var(--color-dark-blue);
    opacity: 0;
    transition: opacity 0.3s ease-out;
}
.header-menu__link.header-menu__link_active::after {
    opacity: 1;
}
.header-menu__link:hover {
    opacity: 0.7;
}
.show-search .header-menu {
    display: none;
}

@media (max-width: 768px) {
    .header-menu {
        flex-direction: column;
        gap: 16px;
    }
    .header-menu__link {
        padding: 0;
        font-size: var(--font-size-title-2);
        line-height: var(--line-height-title-2);
    }
    .header-menu__link.header-menu__link_active::after {
        opacity: 0;
    }
    .header-menu.header-menu_horizontal {
        flex-direction: row;
        justify-content: center;
        gap: 0;
        position: relative;
        z-index: 1;
        margin-bottom: 16px;
    }
    .header-menu.header-menu_horizontal::after {
        content: "";
        position: absolute;
        left: 0;
        right: 0;
        bottom: 0;
        border-bottom: 1px solid var(--color-gray-60);
    }
    .header-menu.header-menu_horizontal .header-menu__link {
        padding: 8px 6px;
        font-size: var(--font-size-label);
        line-height: var(--line-height-label);
    }
    .header-menu.header-menu_horizontal .header-menu__link.header-menu__link_active::after {
        opacity: 1;
    }
}