/* Load after page styles. Header height includes the device's top safe area. */
:root {
    --site-header-height: calc(80px + env(safe-area-inset-top, 0px));
}

html { scroll-padding-top: calc(var(--site-header-height) + 1rem); }

.site-header,
.site-header.scrolled {
    box-sizing: border-box;
    position: fixed;
    inset: 0 0 auto;
    z-index: 1000;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    height: var(--site-header-height);
    min-height: var(--site-header-height);
    padding: env(safe-area-inset-top, 0px) clamp(1.25rem, 4vw, 4rem) 0;
    font-family: 'Basically A Sans Serif', -apple-system, BlinkMacSystemFont, sans-serif;
    font-weight: 300;
}

.site-header .page-header-bg,
.site-header .hero-nav-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background: linear-gradient(to bottom, rgba(31, 68, 102, 0.98), rgba(31, 68, 102, 0.92));
}

.site-header .logo {
    position: relative;
    z-index: 1;
    flex-shrink: 0;
    font: 300 1.25rem/1.4 'Basically A Sans Serif', sans-serif;
    letter-spacing: 0.25em;
    color: #c0c0c0;
    text-decoration: none;
    white-space: nowrap;
}

.site-header .site-navigation {
    position: relative;
    z-index: 1;
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    gap: clamp(0.875rem, 1.6vw, 1.5rem);
    min-width: 0;
}

.site-header .site-navigation a,
.site-menu-toggle {
    box-sizing: border-box;
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    color: #c0c0c0;
    font-family: inherit;
    font-size: clamp(0.72rem, 1vw, 0.85rem);
    font-weight: 300;
    line-height: 1.5;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    text-decoration: none;
    white-space: nowrap;
    touch-action: manipulation;
}

.site-header .nav-management::after { content: none; }
.site-header .site-navigation .nav-portal {
    padding: 0.4rem 0.8rem;
    background: rgba(245, 245, 245, 0.1);
    border-radius: 4px;
}

.site-header a:hover,
.site-header a[aria-current="true"],
.site-header a[aria-current="page"],
.site-menu-toggle:hover { color: #f5f5f5; }

.site-header a:focus-visible,
.site-menu-toggle:focus-visible {
    outline: 2px solid #e8e8e8;
    outline-offset: 4px;
    border-radius: 2px;
}

.site-menu-toggle {
    display: none;
    position: relative;
    z-index: 1;
    padding: 0.5rem 0.875rem;
    border: 1px solid rgba(192, 192, 192, 0.5);
    border-radius: 2px;
    background: transparent;
    cursor: pointer;
}

/* Opt-in spacing for text-led pages; experience pages can place their own hero. */
.page-header.site-header + .site-header-offset {
    padding-top: calc(var(--site-header-height) + 2rem);
}

@media (max-width: 1099px) {
    /* Unenhanced fallback stays in flow, with all links available. */
    .site-header,
    .site-header.scrolled {
        position: relative;
        flex-wrap: wrap;
        height: auto;
        min-height: var(--site-header-height);
        gap: 0.5rem;
        padding: calc(1rem + env(safe-area-inset-top, 0px)) 1.25rem 1rem;
        background: #1f4466;
    }

    .site-header .logo { font-size: 1.1rem; }

    .site-header .site-navigation {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 0.25rem 0.75rem;
        width: 100%;
    }

    .site-header .site-navigation a {
        font-size: 0.75rem;
        letter-spacing: 0.12em;
        white-space: normal;
        overflow-wrap: anywhere;
    }

    .page-header.site-header:not(.site-navigation-ready) + .site-header-offset { padding-top: 2rem; }

    .site-header.site-navigation-ready {
        position: fixed;
        flex-wrap: nowrap;
        height: var(--site-header-height);
        padding: env(safe-area-inset-top, 0px) 1.25rem 0;
    }

    .site-navigation-ready .site-menu-toggle { display: inline-flex; }

    .site-header.site-navigation-ready .site-navigation {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        padding: 0.75rem 1.25rem calc(1rem + env(safe-area-inset-bottom, 0px));
        max-height: calc(100vh - var(--site-header-height));
        max-height: calc(100dvh - var(--site-header-height));
        overflow-y: auto;
        overscroll-behavior: contain;
        background: #1f4466;
        border-top: 1px solid rgba(192, 192, 192, 0.2);
        box-shadow: 0 12px 20px rgba(0, 0, 0, 0.2);
    }

    .site-header.site-menu-open .site-navigation {
        display: flex;
        flex-direction: column;
        align-items: stretch;
        gap: 0.125rem;
    }

    .site-header.site-menu-open .site-navigation a { padding: 0.5rem 0.75rem; }
}