.header {
    position: sticky;
    top: 0;
    z-index: var(--z-header);
    background: var(--color-bg-primary);
    box-shadow: var(--shadow-header);
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding-block: 0.85rem;
}

.header__logo img {
    height: 32px;
    width: auto;
}

.header__nav {
    display: none;
}

.header__nav-list {
    display: flex;
    align-items: center;
    gap: 1.75rem;
}

.header__nav-link {
    font-size: var(--font-size-small);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-main);
    padding-block: 0.5rem;
    position: relative;
}

.header__nav-link:hover,
.header__nav-link--active {
    color: var(--color-heading-gold);
}

.header__nav-link--active::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 2px;
    background: var(--color-heading-gold);
    border-radius: var(--radius-pill);
}

.header__actions {
    display: flex;
    align-items: center;
    gap: 0.65rem;
}

.header__login-btn,
.header__register-btn,
.header__flag {
    display: none;
}

.header__burger {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-card);
}

.header__burger-line {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-white);
    transition: transform var(--transition-base), opacity var(--transition-base);
}

.header__burger[aria-expanded="true"] .header__burger-line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.header__burger[aria-expanded="true"] .header__burger-line:nth-child(2) {
    opacity: 0;
}

.header__burger[aria-expanded="true"] .header__burger-line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

.header__mobile-menu {
    max-height: 0;
    overflow: hidden;
    background: var(--color-bg-dark);
    transition: max-height var(--transition-base);
}

.header__mobile-menu--open {
    max-height: 85vh;
    overflow-y: auto;
}

.header__mobile-list {
    display: flex;
    flex-direction: column;
    padding: 1rem var(--container-padding-inline);
}

.header__mobile-list li {
    border-bottom: 1px solid rgba(241, 244, 244, 0.08);
}

.header__mobile-list a {
    display: block;
    padding: 0.9rem 0;
    font-weight: var(--font-weight-medium);
    color: var(--color-text-main);
}

.header__mobile-list a:hover {
    color: var(--color-heading-gold);
}

.header__mobile-actions {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    padding: 1rem var(--container-padding-inline) 1.5rem;
}

@media (min-width: 768px) {
    .header__nav {
        display: block;
    }

    .header__login-btn,
    .header__register-btn,
    .header__flag {
        display: inline-flex;
    }

    .header__flag {
        align-items: center;
        font-size: 0.85rem;
        line-height: 1;
        color: var(--color-text-main);
    }

    .header__burger,
    .header__mobile-menu {
        display: none;
    }
}