/* ==========================================================================
   LUX&GO — Site Header / Navbar
   ========================================================================== */

.site-header {
    --header-height: clamp(72px, 4vw, 78px);
    --header-nav-size: clamp(0.8125rem, 0.78rem + 0.15vw, 0.9375rem);
    --header-bg-top: rgba(9, 10, 12, 0.25);
    --header-bg-scrolled: rgba(9, 10, 12, 0.9);
    --header-border-scrolled: rgba(255, 255, 255, 0.06);
    --header-transition: 320ms ease;

    position: fixed;
    inset-inline: 0;
    top: 0;
    z-index: 1000;
    height: var(--header-height);
    background-color: var(--header-bg-top);
    border-bottom: 1px solid transparent;
    transition: background-color var(--header-transition), border-color var(--header-transition);
}

/*
   Pages that open on a light surface need the bar solid from the start,
   otherwise the white navigation sits on a near-white background.
   Reuses the scrolled-state tokens — no separate look.
*/
.has-light-top .site-header {
    background-color: var(--header-bg-scrolled);
    border-bottom-color: var(--header-border-scrolled);
}

.site-header.is-scrolled {
    background-color: var(--header-bg-scrolled);
    border-bottom-color: var(--header-border-scrolled);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: clamp(16px, 2vw, 40px);
    height: 100%;
}

/* Brand ------------------------------------------------------------------ */

.site-header__brand {
    display: inline-flex;
    flex-shrink: 0;
    font-family: var(--font-heading);
    font-weight: var(--fw-semibold);
    font-size: clamp(1.25rem, 1.1rem + 0.45vw, 1.5rem);
    letter-spacing: 0.01em;
    color: var(--color-white);
}

/* The mark: a blue rule drawn around the wordmark, set in type so it stays
   sharp at any pixel density. The navbar carries the compact form — the
   tagline is left to the footer, where there is height for it to be read. */
.site-header__brand .lux-mark__rule {
    display: inline-flex;
    align-items: baseline;
    padding: 0.28em 0.58em;
    border: 1.5px solid var(--color-lux-blue);
    border-radius: 2px;
    line-height: 1;
}

.site-header__brand .lux-mark__word {
    font-family: var(--font-mark);
    font-weight: var(--fw-bold);
    letter-spacing: 0.05em;
}

/* In the logo the ampersand is not Outfit's — Poppins draws the same straight
   leg and flat cut. It is set at about 55% of the cap height, a shade lighter
   than the letters, floats a fifth of the cap height clear of the baseline, and
   is pulled a little tighter than the letters on either side. */
.site-header__brand .lux-mark__amp {
    display: inline-block;
    font-family: var(--font-mark-amp);
    font-size: 0.54em;
    font-weight: var(--fw-semibold);
    position: relative;
    top: -0.235em;
}

.site-header__brand:focus-visible {
    outline: 2px solid var(--color-lux-blue);
    outline-offset: 4px;
    border-radius: var(--radius-sm);
}

/* Navigation --------------------------------------------------------------- */

.site-nav {
    display: flex;
    flex: 1;
    justify-content: center;
    min-width: 0;
}

.site-nav__list {
    display: flex;
    align-items: center;
    gap: clamp(18px, 1.6vw, 32px);
}

.site-nav__link {
    position: relative;
    display: inline-block;
    padding-block: 10px;
    font-family: var(--font-body);
    font-size: var(--header-nav-size);
    font-weight: var(--fw-medium);
    color: rgba(255, 255, 255, 0.72);
    white-space: nowrap;
    transition: color var(--transition-base);
}

.site-nav__link::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 4px;
    height: 2px;
    background-color: var(--color-lux-blue);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

.site-nav__link:hover,
.site-nav__link:focus-visible,
.site-nav__link.is-active {
    color: var(--color-white);
}

.site-nav__link:hover::after,
.site-nav__link:focus-visible::after,
.site-nav__link.is-active::after {
    transform: scaleX(1);
}

.site-nav__link:focus-visible {
    outline: 2px solid var(--color-lux-blue);
    outline-offset: 4px;
    border-radius: var(--radius-sm);
}

/* CTA ----------------------------------------------------------------------- */

/*
   A hairline outline rather than a filled block. This CTA is pinned to every
   page, so keeping it quiet leaves blue as an accent and lets the filled blue
   action close a page on its own terms.
*/
.site-header__cta {
    display: inline-flex;
    flex-shrink: 0;
    align-items: center;
    height: clamp(42px, 3vw, 46px);
    padding-inline: clamp(24px, 2vw, 34px);
    border: 1px solid rgba(255, 255, 255, 0.35);
    border-radius: var(--radius-sm);
    color: var(--color-white);
    font-family: var(--font-body);
    font-size: clamp(0.75rem, 0.72rem + 0.08vw, 0.8125rem);
    font-weight: var(--fw-medium);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    white-space: nowrap;
    transition: background-color var(--transition-base), border-color var(--transition-base);
}

.site-header__cta:hover {
    background-color: rgba(255, 255, 255, 0.06);
    border-color: var(--color-white);
}

.site-header__cta:focus-visible {
    outline: 2px solid var(--color-white);
    outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
    .site-header,
    .site-nav__link,
    .site-nav__link::after,
    .site-header__cta {
        transition: none;
    }
}

/* Language switcher ------------------------------------------------------------ */

/* The switcher shares a wrapper with the CTA so the bar keeps three flex
   children and the navigation is not pushed off its position. */
.site-header__actions {
    display: inline-flex;
    flex-shrink: 0;
    align-items: center;
    gap: clamp(14px, 1.4vw, 22px);
}

.site-header__lang {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-body);
    font-weight: var(--fw-medium);
    font-size: clamp(0.6875rem, 0.66rem + 0.08vw, 0.8125rem);
    letter-spacing: 0.08em;
}

.site-header__lang-link {
    color: var(--color-muted-gray);
    transition: color var(--transition-base);
}

.site-header__lang-link:hover {
    color: var(--color-white);
}

.site-header__lang-link.is-active {
    color: var(--color-lux-blue);
}

/* A hairline rather than a pipe character, so the divider is not read aloud. */
.site-header__lang-link + .site-header__lang-link {
    padding-left: 8px;
    border-left: 1px solid rgba(255, 255, 255, 0.25);
}

.site-header__lang-link:focus-visible {
    outline: 2px solid var(--color-lux-blue);
    outline-offset: 3px;
    border-radius: var(--radius-sm);
}

/* Mobile menu ------------------------------------------------------------------ */

/*
   The toggle and the panel are desktop-hidden by default; the breakpoints below
   switch them on. Desktop rules above this line are untouched.
*/
.site-header__toggle {
    display: none;
}

.site-menu {
    display: none;
}

/* Tablet and mobile ------------------------------------------------------------- */

@media (max-width: 1023px) {
    .site-header {
        /* Kept in step with .site-menu padding-top below. */
        --header-height: 64px;
    }

    .site-nav,
    .site-header__actions {
        display: none;
    }

    .site-header__toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 44px;
        height: 44px;
        margin-right: -10px;
        padding: 0;
        border: 0;
        background-color: transparent;
        cursor: pointer;
    }

    .site-header__toggle:focus-visible {
        outline: 2px solid var(--color-lux-blue);
        outline-offset: 2px;
        border-radius: var(--radius-sm);
    }

    .site-header__toggle-icon {
        display: block;
        width: 24px;
        height: 24px;
    }

    /* The global img{display:block} reset outranks the UA rule for [hidden],
       so the inactive icon needs saying explicitly. */
    .site-header__toggle-icon[hidden] {
        display: none;
    }

    /* Solid while open, so bar and panel read as one surface. */
    .site-header.is-menu-open {
        background-color: var(--color-obsidian);
        border-bottom-color: transparent;
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
    }

    .site-menu {
        position: fixed;
        inset: 0;
        z-index: 990;
        display: block;
        visibility: hidden;
        opacity: 0;
        /* Clears the fixed bar above; matches --header-height at this breakpoint. */
        padding-top: 64px;
        padding-bottom: max(28px, env(safe-area-inset-bottom));
        overflow-y: auto;
        overscroll-behavior: contain;
        background-color: var(--color-obsidian);
        transition: opacity var(--header-transition), visibility var(--header-transition);
    }

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

    .site-menu__inner {
        display: flex;
        flex-direction: column;
        gap: clamp(28px, 5vw, 44px);
        padding-top: clamp(28px, 6vw, 48px);
    }

    .site-menu__item + .site-menu__item {
        margin-top: clamp(14px, 2.6vw, 22px);
    }

    .site-menu__link {
        display: inline-block;
        font-family: var(--font-heading);
        font-weight: var(--fw-medium);
        font-size: clamp(1.5rem, 1.35rem + 0.7vw, 1.75rem);
        line-height: 1.2;
        letter-spacing: -0.01em;
        color: var(--color-white);
    }

    /* Blue text accent for the current page — never a pill. */
    .site-menu__link.is-active {
        color: var(--color-lux-blue);
    }

    .site-menu__link:focus-visible {
        outline: 2px solid var(--color-lux-blue);
        outline-offset: 4px;
        border-radius: var(--radius-sm);
    }

    /* Same hairline treatment as the desktop bar CTA. */
    .site-menu__cta {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 10px;
        width: 100%;
        height: 52px;
        border: 1px solid rgba(255, 255, 255, 0.35);
        border-radius: var(--radius-sm);
        color: var(--color-white);
        font-family: var(--font-body);
        font-weight: var(--fw-medium);
        font-size: clamp(0.75rem, 0.72rem + 0.08vw, 0.8125rem);
        letter-spacing: 0.1em;
        text-transform: uppercase;
    }

    .site-menu__cta:focus-visible {
        outline: 2px solid var(--color-white);
        outline-offset: 3px;
    }

    .site-menu__lang {
        margin-top: clamp(4px, 1.6vw, 10px);
        padding-top: clamp(20px, 3.4vw, 28px);
        border-top: 1px solid rgba(255, 255, 255, 0.16);
    }

    .site-menu__lang-label {
        font-family: var(--font-body);
        font-weight: var(--fw-semibold);
        font-size: clamp(0.625rem, 0.6rem + 0.08vw, 0.75rem);
        letter-spacing: 0.14em;
        text-transform: uppercase;
        color: var(--color-muted-gray);
    }

    .site-menu__lang-links {
        display: flex;
        align-items: center;
        gap: clamp(18px, 4vw, 26px);
        margin-top: clamp(10px, 2vw, 14px);
    }

    /* Sized for a finger, not just for the two characters. */
    .site-menu__lang-link {
        display: inline-flex;
        align-items: center;
        min-height: 44px;
        padding-inline: 2px;
        font-family: var(--font-body);
        font-weight: var(--fw-medium);
        font-size: clamp(0.875rem, 0.85rem + 0.1vw, 1rem);
        letter-spacing: 0.12em;
        color: var(--color-muted-gray);
    }

    .site-menu__lang-link.is-active {
        color: var(--color-lux-blue);
    }

    .site-menu__lang-link:focus-visible {
        outline: 2px solid var(--color-lux-blue);
        outline-offset: 3px;
        border-radius: var(--radius-sm);
    }

    /* Scroll lock while the panel is open. */
    .has-menu-open {
        overflow: hidden;
    }
}

/* Mobile ------------------------------------------------------------------------ */

@media (max-width: 767px) {
    .site-menu__inner {
        gap: clamp(24px, 6vw, 36px);
    }
}

@media (prefers-reduced-motion: reduce) {
    .site-menu {
        transition: none;
    }
}