.site-header {
    position: absolute;
    inset-inline: 0;
    top: 0;
    z-index: 100;
    width: 100%;
    transition: background-color .35s ease, box-shadow .35s ease;
}

.site-header__brand,
.site-header__nav a {
    color: var(--color-primary);
    transition: color .35s ease;
}

.site-header--transparent {
    position: fixed;
}

.site-header--transparent .site-header__brand,
.site-header--transparent .site-header__nav a {
    color: #fff;
}

.site-header--transparent .site-header__nav a.is-active::after {
    background: var(--color-accent);
}

.site-header--transparent::before {
    content: '';
    position: absolute;
    inset: 0;
    height: 180px;
    background: linear-gradient(180deg, rgba(16, 16, 16, .62) 0%, rgba(16, 16, 16, .32) 55%, rgba(16, 16, 16, 0) 100%);
    pointer-events: none;
    opacity: 1;
    transition: opacity .35s ease;
    z-index: -1;
}

.site-header--transparent.is-scrolled {
    background: var(--color-bg);
    box-shadow: var(--shadow-sm);
}

.site-header--transparent.is-scrolled::before {
    opacity: 0;
}

.site-header--transparent.is-scrolled .site-header__brand,
.site-header--transparent.is-scrolled .site-header__nav a {
    color: var(--color-primary);
}

.site-header--transparent.is-scrolled .site-header__toggle {
    color: var(--color-primary);
}

.site-header--solid {
    position: sticky;
    background: var(--color-bg);
    box-shadow: var(--shadow-sm);
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
}

.site-header__brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.site-header__logo {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    object-fit: cover;
}

.site-header__brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
    font-family: var(--font-heading);
}

.site-header__brand-text strong {
    font-size: 15px;
}

.site-header__brand-text small {
    font-size: 11px;
    letter-spacing: .04em;
    opacity: .85;
}

.site-header__nav ul {
    display: flex;
    align-items: center;
    gap: 28px;
}

.site-header__nav a {
    position: relative;
    display: inline-block;
    font-size: 11.5px;
    font-weight: 1000;
    padding-block: 8px;
    transition: opacity var(--transition-base);
}

.site-header__nav a:hover {
    opacity: .75;
}

.site-header__nav a.is-active::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 2px;
    background: var(--color-accent);
    border-radius: 2px;
}

.site-header__actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.site-header__cta {
    padding: 7px 24px;
    font-size: 14px;
}

.site-header__toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    background: transparent;
    border: none;
    padding: 0;
}

.site-header__toggle span {
    display: block;
    height: 2px;
    border-radius: 2px;
    background: currentColor;
}

.site-header--transparent .site-header__toggle {
    color: var(--color-text-invert);
}

.site-header--solid .site-header__toggle {
    color: var(--color-primary);
}

/* 992px left a squeeze zone (~993-1229px) where the full nav no longer hid
   behind the hamburger but didn't have room for its own labels either - each
   multi-word item (e.g. "HOẠT ĐỘNG & SỰ KIỆN") wrapped to two lines instead,
   making the header visibly taller and cramped. Measured the real wrap point
   via a width sweep rather than guessing: labels stay on one line again only
   at 1230px+, so the hamburger threshold now covers the whole gap. */
@media (max-width: 1240px) {
    .site-header__nav {
        display: none;
    }

    .site-header__toggle {
        display: flex;
    }

    .site-header__cta {
        display: none;
    }
}

.mobile-menu {
    position: fixed;
    inset: 0;
    z-index: 200;
    visibility: hidden;
    pointer-events: none;
}

.mobile-menu.is-open {
    visibility: visible;
    pointer-events: auto;
}

.mobile-menu__overlay {
    position: absolute;
    inset: 0;
    background: rgba(34, 27, 51, .5);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.mobile-menu.is-open .mobile-menu__overlay {
    opacity: 1;
}

.mobile-menu__panel {
    position: absolute;
    top: 0;
    right: 0;
    height: 100%;
    width: min(320px, 85vw);
    background: var(--color-bg);
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 24px;
    transform: translateX(100%);
    transition: transform var(--transition-base);
    box-shadow: var(--shadow-lg);
    overflow-y: auto;
}

.mobile-menu.is-open .mobile-menu__panel {
    transform: translateX(0);
}

.mobile-menu__close {
    align-self: flex-end;
    width: 36px;
    height: 36px;
    border: none;
    background: var(--color-bg-alt);
    border-radius: 50%;
    font-size: 20px;
    line-height: 1;
    color: var(--color-primary);
}

.mobile-menu__panel ul {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.mobile-menu__panel a {
    display: block;
    padding: 12px 8px;
    font-weight: 600;
    color: var(--color-primary);
    border-radius: 8px;
}

.mobile-menu__panel a.is-active,
.mobile-menu__panel a:hover {
    background: var(--color-bg-alt);
}

.mobile-menu__cta {
    margin-top: auto;
}

.site-footer {
    background: var(--color-primary-dark);
    color: rgba(255, 255, 255, .75);
}

.site-footer__top {
    display: grid;
    grid-template-columns: 1.3fr 1fr 1fr 1.3fr;
    gap: 40px;
    padding-block: 64px 40px;
}

.site-footer__logo {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    color: #fff;
    font-family: var(--font-heading);
    margin-bottom: 18px;
}

.site-footer__logo img {
    width: 85px;
    height: 75px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
}

.site-footer__logo strong {
    display: block;
    font-size: 19px;
    font-weight: 800;
    letter-spacing: 0;
    line-height: 1.15;
}

.site-footer__logo small {
    display: block;
    font-size: 17px;
    font-weight: 800;
    letter-spacing: 0;
    line-height: 1.15;
    color: var(--color-accent);
}

.site-footer__tagline {
    display: inline-block;
    font-style: normal;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 11px;
    letter-spacing: .05em;
    text-transform: uppercase;
    color: #fff;
    margin-top: 3px;
}

.site-footer__intro {
    font-size: 13.5px;
    line-height: 1.7;
    color: rgba(255, 255, 255, .6);
    margin-bottom: 20px;
    max-width: 30ch;
}

.site-footer__social {
    display: flex;
    align-items: center;
    gap: 10px;
}

.site-footer__social a {
    height: 50px;
    min-width: 50px;
    padding-inline: 10px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-pill);
    border: 1.5px solid rgba(255, 255, 255, .35);
    background: transparent;
    transition: background var(--transition-base), border-color var(--transition-base);
}

.site-footer__social a:hover {
    background: var(--color-accent);
    border-color: var(--color-accent);
}

.site-footer__social svg {
    width: 25px;
    height: 25px;
    fill: #fff;
}

.site-footer__social a:hover svg {
    fill: var(--color-primary-dark);
}

.site-footer__social a.is-text {
    font-size: 13px;
}

.site-footer__social a.is-text {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 14px;
    color: #fff;
}

.site-footer__social a.is-text:hover {
    color: var(--color-primary-dark);
}

.site-footer__col h3 {
    position: relative;
    color: #fff;
    font-size: 15px;
    text-transform: uppercase;
    letter-spacing: .04em;
    padding-bottom: 12px;
    margin-bottom: 16px;
}

.site-footer__col h3::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 28px;
    height: 3px;
    border-radius: 2px;
    background: var(--color-accent);
}

.site-footer__col ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.site-footer__col a {
    font-size: 14px;
    color: rgba(255, 255, 255, .75);
    transition: color var(--transition-base);
}

.site-footer__col a:hover {
    color: var(--color-accent);
}

.site-footer__links li {
    display: flex;
    align-items: center;
    gap: 6px;
}

.site-footer__links li::before {
    content: '\203A';
    color: var(--color-accent);
    font-size: 16px;
    font-weight: 700;
    line-height: 1;
}

.site-footer__contact {
    margin-bottom: 24px;
}

.site-footer__contact li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 14px;
}

.site-footer__contact li + li {
    margin-top: 12px;
}

.site-footer__contact svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    fill: var(--color-accent);
    margin-top: 2px;
}

.site-footer__contact span {
    color: rgba(255, 255, 255, .7);
    word-break: break-word;
}

.site-footer__quick h4 {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 15px;
    color: #fff;
    margin-bottom: 4px;
}

.site-footer__quick p {
    font-size: 12.5px;
    color: rgba(255, 255, 255, .5);
    margin-bottom: 14px;
}

.site-footer__quick-form {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.site-footer__quick-form input {
    width: 100%;
    padding: 11px 14px;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, .2);
    background: rgba(255, 255, 255, .08);
    color: #fff;
    font-size: 14px;
}

.site-footer__quick-form input::placeholder {
    color: rgba(255, 255, 255, .5);
}

.site-footer__quick-form input:focus {
    outline: none;
    border-color: var(--color-accent);
    background: rgba(255, 255, 255, .12);
}

.site-footer__quick-form .btn {
    margin-top: 4px;
}

.site-footer__quick-form .btn svg {
    width: 16px;
    height: 16px;
}

.site-footer__quick-note {
    margin: 2px 0 0;
    font-size: 12px;
    line-height: 1.5;
    color: rgba(255, 255, 255, .5);
}

.site-footer__quick-note a {
    color: rgba(255, 255, 255, .75);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.site-footer__bottom {
    border-top: 1px solid rgba(255, 255, 255, .12);
}

.site-footer__bottom-inner {
    text-align: center;
    padding-block: 20px;
    font-size: 13px;
}

@media (max-width: 992px) {
    .site-footer__top {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 576px) {
    .site-footer__top {
        grid-template-columns: 1fr;
        padding-block: 48px 24px;
        gap: 32px;
    }
}