.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: #fff;
    box-shadow: 0 1px 0 rgba(16, 24, 40, 0.06);
}

.admin-bar .site-header {
    top: 32px;
}

@media (max-width: 782px) {
    .admin-bar .site-header {
        top: 46px;
    }
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    max-width: 90rem;
    margin: 0 auto;
    padding: 0 5rem;
    height: 6.5625rem;
}

.site-header__logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-shrink: 0;
}

.site-header__logo-icon {
    width: 3.4375rem;
    height: 2.825rem;
}

.site-header__logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.site-header__logo-text strong {
    font-size: 1.25rem;
    font-weight: 700;
    color: #013475;
}

.site-header__logo-text small {
    font-size: 0.6875rem;
    font-weight: 400;
    color: #264c99;
}

/* ===== Nav desktop ===== */
.site-nav {
    flex: 1 1 auto;
    display: flex;
    justify-content: center;
    min-width: 0;
}

.site-nav__list {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 2rem;
}

.site-nav__item {
    position: relative;
    display: flex;
    align-items: center;
}

.site-nav__link {
    font-family: "Quicksand", sans-serif;
    font-size: 1.125rem;
    font-weight: 500;
    color: #2a2a2a;
    white-space: nowrap;
    padding: 0.5rem 0;
}

.site-nav__item:hover .site-nav__link,
.site-nav__item.is-open .site-nav__link {
    color: var(--home-blue, #2854ab);
}

.site-nav__toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 1rem;
    height: 1rem;
    margin-left: 0.375rem;
    color: #2a2a2a;
    transform: rotate(90deg);
    transition: transform 0.2s ease, color 0.2s ease;
}

.site-nav__toggle svg {
    width: 0.75rem;
    height: 0.8125rem;
}

.site-nav__item.is-open .site-nav__toggle,
.site-nav__item:hover .site-nav__toggle {
    color: var(--home-blue, #2854ab);
}

.site-nav__item.is-open .site-nav__toggle {
    transform: rotate(-90deg);
}

.site-nav__megamenu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translate(-50%, 0.75rem);
    background: #fff;
    border-radius: 0.75rem;
    box-shadow: 0 20px 40px rgba(16, 24, 40, 0.12);
    padding: 1.5rem;
    min-width: 22rem;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s;
    z-index: 20;
}

.site-nav__item:hover .site-nav__megamenu,
.site-nav__item.is-open .site-nav__megamenu {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translate(-50%, 0.5rem);
}

.site-nav__megamenu-inner {
    display: flex;
    gap: 2rem;
}

.site-nav__megamenu-col {
    min-width: 10rem;
}

.site-nav__megamenu-col--link a {
    font-weight: 600;
    color: #2a2a2a;
}

.site-nav__megamenu-heading {
    display: block;
    font-size: 0.9375rem;
    font-weight: 700;
    color: #013475;
    margin-bottom: 0.75rem;
}

.site-nav__megamenu-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.625rem;
}

.site-nav__megamenu-col a {
    font-size: 0.9375rem;
    color: #4a4a4a;
    transition: color 0.15s ease;
}

.site-nav__megamenu-col a:hover {
    color: var(--home-orange, #ff5100);
}

/* ===== Actions ===== */
.site-header__actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-shrink: 0;
}

.site-header__btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 2.8125rem;
    padding: 0 1.5rem;
    font-family: "Quicksand", sans-serif;
    font-size: 1.125rem;
    font-weight: 500;
    white-space: nowrap;
    transition: opacity 0.2s ease;
}

.site-header__btn--primary {
    background: var(--home-blue, #2854ab);
    color: #fff;
    border-radius: 0.9375rem;
}

.site-header__btn--outline {
    border: 1px solid var(--home-blue, #2854ab);
    color: var(--home-blue, #2854ab);
    border-radius: 1.25rem;
    font-size: 1rem;
    font-weight: 600;
}

.site-header__btn:hover {
    opacity: 0.85;
}

/* ===== Burger (mobile trigger) ===== */
.site-header__burger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 0.3125rem;
    width: 2.5rem;
    height: 2.5rem;
    flex-shrink: 0;
}

.site-header__burger span {
    display: block;
    height: 2px;
    background: #013475;
    border-radius: 2px;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

/* ===== Mobile overlay + panel ===== */
.site-header__overlay {
    position: fixed;
    inset: 0;
    background: rgba(11, 24, 43, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, visibility 0.25s;
    z-index: 199;
}

.site-header__mobile {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 22rem;
    max-width: 88vw;
    background: #fff;
    display: flex;
    flex-direction: column;
    transform: translateX(100%);
    transition: transform 0.28s ease;
    z-index: 200;
    overflow-y: auto;
}

html.is-menu-open {
    overflow: hidden;
}

.is-menu-open .site-header__overlay {
    opacity: 1;
    visibility: visible;
}

.is-menu-open .site-header__mobile {
    transform: translateX(0);
}

.site-header__mobile-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem;
    border-bottom: 1px solid #eef0f6;
}

.site-header__mobile-head .site-header__logo-text strong {
    font-size: 1.0625rem;
}

.site-header__mobile-close {
    width: 2.25rem;
    height: 2.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #2a2a2a;
    flex-shrink: 0;
}

.site-header__mobile-close svg {
    width: 1.125rem;
    height: 1.125rem;
}

.site-nav__mobile-list {
    list-style: none;
    padding: 0.5rem 1.25rem;
}

.site-nav__mobile-item {
    border-bottom: 1px solid #eef0f6;
}

.site-nav__mobile-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.site-nav__mobile-row > a {
    flex: 1 1 auto;
    padding: 0.9375rem 0;
    font-size: 1.0625rem;
    font-weight: 500;
    color: #2a2a2a;
}

.site-nav__mobile-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    flex-shrink: 0;
    color: #2a2a2a;
    transition: transform 0.2s ease;
}

.site-nav__mobile-toggle svg {
    width: 0.75rem;
    height: 0.8125rem;
    transform: rotate(90deg);
    transition: transform 0.2s ease;
}

.site-nav__mobile-item.is-open .site-nav__mobile-toggle svg {
    transform: rotate(-90deg);
}

.site-nav__mobile-submenu {
    list-style: none;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease;
}

.site-nav__mobile-item.is-open .site-nav__mobile-submenu {
    max-height: 40rem;
}

.site-nav__mobile-submenu-heading {
    padding: 0.625rem 0 0.25rem;
    font-size: 0.8125rem;
    font-weight: 700;
    color: #013475;
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.site-nav__mobile-submenu a {
    display: block;
    padding: 0.625rem 0 0.625rem 0.75rem;
    font-size: 1rem;
    color: #4a4a4a;
}

.site-header__mobile-actions {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    padding: 1.25rem;
    margin-top: auto;
}

.site-header__mobile-actions .site-header__btn {
    width: 100%;
}

@media (max-width: 1300px) {
    .site-header__inner {
        padding: 0 2rem;
    }

    .site-nav__list {
        gap: 1.25rem;
    }
}

/* Từ đây trở xuống (bao gồm tablet ngang như iPad 1024px) chuyển sang menu mobile,
   vì nav 5 mục + 2 nút CTA + logo không đủ chỗ hiển thị gọn trên các màn hình này. */
@media (max-width: 1199px) {
    .site-nav,
    .site-header__actions .site-header__btn {
        display: none;
    }

    .site-header__burger {
        display: flex;
    }

    .site-header__inner {
        height: 4.5rem;
        padding: 0 1.25rem;
        gap: 0.75rem;
    }

    .site-header__logo-icon {
        width: 2.5rem;
        height: 2.05rem;
    }

    .site-header__logo-text strong {
        font-size: 1.0625rem;
    }

    .site-header__logo-text small {
        font-size: 0.625rem;
    }
}

@media (max-width: 360px) {
    .site-header__logo-text small {
        display: none;
    }
}