.site-header {
    position: sticky;
    z-index: 100;
    top: 0;
    width: 100%;
    display: grid;
    grid-template-rows: var(--space-20) auto;
    background: color-mix(in srgb, var(--color-background) 12%, transparent);
    border-bottom: 1px solid color-mix(in srgb, var(--color-border) 52%, transparent);
    transition:
        background-color var(--duration-standard) var(--ease-standard),
        border-color var(--duration-standard) var(--ease-standard),
        backdrop-filter var(--duration-standard) var(--ease-standard),
        grid-template-rows var(--duration-standard) var(--ease-standard);
    padding-block-start: env(safe-area-inset-top);
}

.site-header.is-scrolled,
.site-header.is-menu-open {
    background: color-mix(in srgb, var(--color-background) 88%, transparent);
    border-bottom-color: color-mix(in srgb, var(--color-border) 88%, transparent);
    -webkit-backdrop-filter: blur(var(--space-4)) saturate(135%);
    backdrop-filter: blur(var(--space-4)) saturate(135%);
}

.site-header.is-scrolled {
    grid-template-rows: calc(var(--space-20) - var(--space-2)) auto;
}

.site-header__inner {
    min-height: 0;
    height: 100%;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: var(--space-6);
}

.site-header__brand {
    width: max-content;
    display: inline-flex;
    align-items: center;
    text-decoration: none;
}

.site-header__brand-image {
    width: 2.65rem;
    height: 2.65rem;
    display: block;
    object-fit: contain;
}

.site-header__nav-list {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.site-header__nav-link {
    position: relative;
    min-height: 2.75rem;
    display: inline-flex;
    align-items: center;
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    font-weight: var(--font-weight-medium);
    letter-spacing: var(--tracking-ui);
    text-decoration: none;
}

.site-header__nav-link::after {
    content: "";
    position: absolute;
    inset-inline: 0;
    inset-block-end: 0;
    height: 1px;
    background: var(--color-mint);
    opacity: 0;
    transform: scaleX(0.45);
    transition:
        opacity var(--duration-fast) var(--ease-standard),
        transform var(--duration-fast) var(--ease-standard);
}

.site-header__nav-link:hover,
.site-header__nav-link[aria-current] {
    color: var(--color-text);
}

.site-header__nav-link:hover::after,
.site-header__nav-link[aria-current]::after {
    opacity: 1;
    transform: scaleX(1);
}

.site-header__actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--space-3);
}

.site-header__language {
    position: relative;
    min-width: 0;
    display: inline-flex;
    align-items: center;
}

.site-header__language::after {
    content: "";
    position: absolute;
    inset-inline-end: 0.9rem;
    top: 50%;
    width: 0.45rem;
    height: 0.45rem;
    border-inline-end: 1.5px solid var(--color-text);
    border-block-end: 1.5px solid var(--color-text);
    transform: translateY(-70%) rotate(45deg);
    pointer-events: none;
}

.site-header__language select {
    min-height: 2.75rem;
    width: 7.5rem;
    max-width: 100%;
    padding-inline: var(--space-3) 2rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-background);
    color: var(--color-text);
    font: inherit;
    font-size: var(--text-sm);
    appearance: none;
}

.site-header__cta,
.site-header__mobile-cta {
    min-height: 2.75rem;
    padding-inline: var(--space-4);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid color-mix(in srgb, var(--color-mint) 72%, var(--color-cyan));
    border-radius: var(--radius-md);
    background: var(--brand-gradient);
    color: var(--color-dark-background);
    font-size: var(--text-sm);
    font-weight: var(--font-weight-semibold);
    letter-spacing: var(--tracking-ui);
    line-height: var(--leading-none);
    text-decoration: none;
}

.site-header__cta:hover,
.site-header__mobile-cta:hover {
    color: var(--color-dark-background);
    filter: saturate(112%);
    transform: translateY(-1px);
}

.site-header__menu-trigger {
    width: 2.75rem;
    height: 2.75rem;
    padding: 0;
    display: none;
    place-items: center;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: color-mix(in srgb, var(--color-surface) 72%, transparent);
    color: var(--color-text);
    cursor: pointer;
}

.site-header__menu-icon {
    width: var(--space-4);
    display: grid;
    gap: 5px;
}

.site-header__menu-icon span {
    width: 100%;
    height: 1.5px;
    display: block;
    border-radius: var(--radius-pill);
    background: currentColor;
    transform-origin: center;
    transition: transform var(--duration-standard) var(--ease-standard);
}

.site-header__menu-trigger[aria-expanded="true"] .site-header__menu-icon span:first-child {
    transform: translateY(3.25px) rotate(45deg);
}

.site-header__menu-trigger[aria-expanded="true"] .site-header__menu-icon span:last-child {
    transform: translateY(-3.25px) rotate(-45deg);
}

.site-header__mobile-panel {
    display: none;
}

@media (max-width: 72rem) {
    .site-header__inner {
        gap: var(--space-4);
    }

    .site-header__nav-list {
        gap: var(--space-4);
    }

    .site-header__cta {
        padding-inline: var(--space-3);
    }
}

@media (max-width: 56.25rem) {
    .site-header,
    .site-header.is-scrolled {
        grid-template-rows: var(--space-16) auto;
    }

    .site-header__inner {
        grid-template-columns: minmax(0, 1fr) auto;
        gap: var(--space-2);
    }

    .site-header__nav,
    .site-header__cta {
        display: none;
    }

    .site-header__menu-trigger {
        display: inline-grid;
    }

    .site-header__mobile-panel:not([hidden]) {
        display: block;
        background: color-mix(in srgb, var(--color-background) 94%, transparent);
        border-top: 1px solid color-mix(in srgb, var(--color-border) 72%, transparent);
        -webkit-backdrop-filter: blur(var(--space-4)) saturate(135%);
        backdrop-filter: blur(var(--space-4)) saturate(135%);
        animation: header-menu-enter var(--duration-standard) var(--ease-standard) both;
    }

    .site-header__mobile-panel nav {
        padding-block: var(--space-2) var(--space-6);
    }

    .site-header__mobile-list a {
        min-height: 3rem;
        display: flex;
        align-items: center;
        justify-content: space-between;
        border-bottom: 1px solid color-mix(in srgb, var(--color-border) 72%, transparent);
        color: var(--color-text-secondary);
        font-size: var(--text-base);
        font-weight: var(--font-weight-medium);
        text-decoration: none;
    }

    .site-header__mobile-list a[aria-current],
    .site-header__mobile-list a:hover {
        color: var(--color-text);
    }

    .site-header__mobile-list a[aria-current]::after {
        content: "";
        width: var(--space-2);
        height: var(--space-2);
        border-radius: var(--radius-pill);
        background: var(--color-mint);
    }

    .site-header__mobile-cta {
        width: 100%;
        margin-block-start: var(--space-4);
    }
}

@media (max-width: 22.5rem) {
    .site-header__actions {
        gap: var(--space-2);
    }
}

@keyframes header-menu-enter {
    from {
        opacity: 0;
        transform: translateY(calc(var(--space-2) * -1));
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (prefers-reduced-motion: reduce) {
    .site-header,
    .site-header__nav-link::after,
    .site-header__menu-icon span {
        transition-duration: 0.01ms;
    }

    .site-header__mobile-panel:not([hidden]) {
        animation: none;
    }

    .site-header__cta:hover,
    .site-header__mobile-cta:hover {
        transform: none;
    }
}