/*
 * Site header and footer shared by the landing page (templates/index.html) and the client and
 * staff product pages (product_client.html, product.html): header and footer.
 * Markup: templates/_site_header.html, _site_footer.html. Behaviour: static/JS/site-chrome.js.
 */

/* Colours, fonts and sizes: static/css/araxi-tokens.css, loaded before this file */

@media (max-width: 899px) {
    :root { --header-h: 64px; }
}

/* ---------- Base for the header and footer ---------- */
/* The landing page resets elements globally (.landing in landing.css); other pages do not, and
   styles.css styles some footer elements, so the header and footer carry their own base. */

html { scroll-padding-top: var(--header-h); }
html.menu-open { overflow: hidden; }

.site-header,
.site-footer {
    box-sizing: border-box;
    font-family: var(--font-body);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    text-align: left;
}
.site-footer {
    width: 100%;
    align-self: stretch;           /* styles.css centres the body's children */
}
.site-header *,
.site-footer *,
.site-header *::before,
.site-footer *::before,
.site-header *::after,
.site-footer *::after { box-sizing: border-box; }
.site-header :where(ul),
.site-footer :where(ul) { margin: 0; padding: 0; list-style: none; }
.site-header :where(a),
.site-footer :where(a) { color: inherit; }
/* ...on hover and focus too: pages that load Bootstrap (e.g. buy-now) would otherwise turn the logo, the
   menu and the language links link-blue through Bootstrap's more specific a:hover. Links with their own
   hover colour (.cart-link, .site-footer__col a, the current language) come later or weigh more */
.site-header :where(a):hover,
.site-header :where(a):focus,
.site-footer :where(a):hover,
.site-footer :where(a):focus { color: inherit; }
.site-header :where(img),
.site-footer :where(img) { max-width: 100%; display: block; }
.site-footer :where(h3, p) { margin: 0; }
.site-header :where(button) { font: inherit; }
.site-header :focus-visible,
.site-footer :focus-visible { outline: 2px solid var(--ochre-500); outline-offset: 3px; }

/* styles.css: ".container" is 80% wide with a 60px top padding, and on phones "footer div",
   "footer span" and "footer h3" are re-laid out; keep the footer as on the landing page */
.site-footer .container {
    width: 100%;
    max-width: calc(var(--container) + 2 * var(--gutter));
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--gutter);
    padding-right: var(--gutter);
}
.site-footer .site-footer__grid { margin-top: 0; padding-top: 0; padding-bottom: 0; }
.site-footer .site-footer__bottom { padding-bottom: 0; }
.site-footer div { flex: 0 1 auto; max-width: none; text-align: inherit; }
.site-footer span { text-align: inherit; }
.site-footer .container p { text-align: inherit; }    /* styles.css: "p:not(.ql-editor p)" is centred up to 1365px */
.site-footer h3 { text-align: left !important; }

.sr-only {
    position: absolute !important;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0 0 0 0);
    white-space: nowrap; border: 0;
}

.icon {
    width: 1.15em; height: 1.15em;
    flex: none;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* ---------- Header ---------- */

.site-header {
    position: fixed;
    inset: 0 0 auto 0;
    z-index: 50;
    height: var(--header-h);
    color: var(--white);
    transition: background-color .35s, color .35s, box-shadow .35s, height .35s;
}
.site-header::before {      /* legibility over bright skies */
    content: "";
    position: absolute;
    z-index: -1;
    inset: 0 0 -40px 0;
    background: linear-gradient(to bottom, rgba(4, 24, 42, .55), rgba(4, 24, 42, 0));
    pointer-events: none;
    transition: opacity .35s;
}
/* The solid background lives on a pseudo-element: backdrop-filter on the header itself
   would make it the containing block of the fixed mobile menu. */
.site-header::after {
    content: "";
    position: absolute;
    z-index: -1;
    inset: 0;
    background: rgba(251, 249, 244, .92);
    -webkit-backdrop-filter: saturate(1.4) blur(14px);
    backdrop-filter: saturate(1.4) blur(14px);
    box-shadow: 0 1px 0 rgba(7, 35, 57, .08);
    opacity: 0;
    pointer-events: none;
    transition: opacity .35s;
}
.site-header.is-solid { color: var(--navy-900); }
.site-header.is-solid::before { opacity: 0; }
.site-header.is-solid::after { opacity: 1; }

.site-header__inner {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    height: 100%;
    max-width: calc(var(--container) + 2 * var(--gutter));
    margin: 0 auto;
    padding: 0 var(--gutter);
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: .75rem;
    text-decoration: none;
    color: inherit;
    position: relative;
    z-index: 2;
}
.brand__tile {
    display: grid;
    place-items: center;
    width: 46px; height: 46px;
    border-radius: 12px;
    background: var(--cream-100);
    box-shadow: 0 6px 18px -8px rgba(4, 24, 42, .5);
}
.brand__tile img { width: 36px; height: auto; }
.brand__word { display: flex; flex-direction: column; line-height: 1; }
.brand__name {
    font-family: var(--font-display);
    font-size: 1.45rem;
    letter-spacing: .26em;
    text-transform: uppercase;
    margin-right: -.26em;
}
.brand__sub {
    margin-top: .3rem;
    font-size: .62rem;
    font-weight: 600;
    letter-spacing: .52em;
    text-transform: uppercase;
    opacity: .8;
}

.site-nav { display: flex; align-items: center; gap: 2rem; }
.site-nav__list { display: flex; gap: 2rem; }
.site-nav__link {
    position: relative;
    padding: .4rem 0;
    font-size: .92rem;
    font-weight: 500;
    letter-spacing: .04em;
    text-decoration: none;
}
.site-nav__link::after {
    content: "";
    position: absolute;
    left: 0; right: 0; bottom: 0;
    height: 1px;
    background: currentColor;
    transform: scaleX(0);
    transform-origin: right;
    transition: transform .35s var(--ease-out);
}
.site-nav__link:hover::after,
.site-nav__link.is-active::after { transform: scaleX(1); transform-origin: left; }

.lang-switch { display: inline-flex; padding: 3px; border: 1px solid currentColor; border-radius: 999px; }
.lang-switch:empty { display: none; }
.lang-switch__item {
    min-width: 2.6rem;
    padding: .25rem .65rem;
    border-radius: 999px;
    font-size: .78rem;
    font-weight: 600;
    letter-spacing: .06em;
    text-align: center;
    text-decoration: none;
    opacity: .75;
    transition: background-color .25s, color .25s, opacity .25s;
}
.lang-switch__item:hover { opacity: 1; }
.lang-switch__item[aria-current] { background: var(--ochre-500); color: var(--navy-950); opacity: 1; }

.menu-toggle {
    display: none;
    position: relative;
    z-index: 2;
    width: 46px; height: 46px;
    padding: 0;
    border: 0;
    border-radius: 50%;
    background: transparent;
    color: inherit;
    cursor: pointer;
}
.menu-toggle__bars,
.menu-toggle__bars::before,
.menu-toggle__bars::after {
    position: absolute;
    left: 12px;
    width: 22px; height: 2px;
    border-radius: 2px;
    background: currentColor;
    transition: transform .35s var(--ease-out), opacity .2s;
}
.menu-toggle__bars { top: 22px; }
.menu-toggle__bars::before, .menu-toggle__bars::after { content: ""; left: 0; }
.menu-toggle__bars::before { top: -7px; }
.menu-toggle__bars::after { top: 7px; }
.menu-open .menu-toggle__bars { background: transparent; }
.menu-open .menu-toggle__bars::before { transform: translateY(7px) rotate(45deg); }
.menu-open .menu-toggle__bars::after { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 899px) {
    .menu-toggle { display: block; }
    .site-nav {
        position: fixed;
        inset: 0;
        z-index: 1;
        flex-direction: column;
        align-items: flex-start;
        justify-content: center;
        gap: 2.5rem;
        padding: calc(var(--header-h) + 2rem) var(--gutter) 3rem;
        background: var(--navy-900) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 400 400'%3E%3Cg fill='none' stroke='%23f8f5ed' stroke-opacity='.06'%3E%3Cpath d='M-20 300 C 80 220 140 260 200 200 S 330 120 420 160'/%3E%3Cpath d='M-20 330 C 80 250 150 290 210 230 S 340 150 420 190'/%3E%3Cpath d='M-20 360 C 90 280 160 320 220 260 S 350 180 420 220'/%3E%3C/g%3E%3C/svg%3E") center / cover;
        color: var(--cream-100);
        visibility: hidden;
        opacity: 0;
        transition: opacity .35s var(--ease-out), visibility 0s .35s;
    }
    .menu-open .site-nav { visibility: visible; opacity: 1; transition: opacity .35s var(--ease-out); }
    .menu-open .site-header { color: var(--cream-100); }
    .menu-open .site-header::before,
    .menu-open .site-header::after { opacity: 0; }
    .site-nav__list { flex-direction: column; gap: 1.25rem; }
    .site-nav__link { font-family: var(--font-display); font-size: clamp(2rem, 8vw, 2.75rem); letter-spacing: .01em; }
    .lang-switch__item { font-size: .9rem; padding: .45rem .9rem; }
}

@media (max-width: 899px) and (prefers-reduced-motion: no-preference) {
    .site-nav__list li { opacity: 0; transform: translateY(16px); transition: opacity .4s, transform .5s var(--ease-out); }
    .menu-open .site-nav__list li { opacity: 1; transform: none; }
    .menu-open .site-nav__list li:nth-child(2) { transition-delay: .06s; }
    .menu-open .site-nav__list li:nth-child(3) { transition-delay: .12s; }
}

/* Pages without a hero image: the header always has its solid (scrolled) look */
.site-header--solid { color: var(--navy-900); }
.site-header--solid::before { opacity: 0; }
.site-header--solid::after { opacity: 1; }

/* ---------- Footer ---------- */

.site-footer {
    position: relative;
    padding: 5.5rem 0 2rem;
    background: var(--navy-950);
    color: rgba(248, 245, 237, .72);
}
.site-footer__river {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 56px;
    fill: none;
    stroke-width: 1.5;
}
.site-footer__river path:first-child { stroke: var(--river-600); }
.site-footer__river path:last-child { stroke: var(--ochre-500); stroke-opacity: .5; }

.site-footer__grid {
    display: grid;
    grid-template-columns: minmax(0, 2fr) repeat(2, minmax(0, 1fr));
    gap: 2.5rem;
}
.site-footer .brand { color: var(--cream-100); }
.site-footer__brand p { margin-top: 1.2rem; max-width: 22rem; }
.site-footer__col h3 {
    margin-bottom: 1rem;
    font-size: .75rem;
    font-weight: 600;
    letter-spacing: .24em;
    text-transform: uppercase;
    color: var(--sand-300);
}
.site-footer__col ul { display: grid; gap: .55rem; }
.site-footer__col a { text-decoration: none; overflow-wrap: anywhere; transition: color .2s; }
.site-footer__col a:hover { color: var(--cream-100); text-decoration: underline; text-underline-offset: 4px; }

.site-footer__bottom {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 4rem;
    padding-top: 1.75rem;
    border-top: 1px solid rgba(248, 245, 237, .12);
    font-size: .88rem;
}
.lang-switch--footer { color: rgba(248, 245, 237, .8); }

@media (max-width: 760px) {
    .site-footer__grid { grid-template-columns: 1fr 1fr; }
    .site-footer__brand { grid-column: 1 / -1; }
}