/* ============================================================
   ARECH Footer block — front-end styles.

   Port of the FOOTER in
     prototypes/footer-explore-2026-05-19/footer-A-classic.html
   re-tokenized to the theme tokens (main.css :root) and corrected to the
   responsive standard (responsive_manual_en_0.1):
     • min-width media queries ONLY (no max-width);
     • the prototype's --container-wide:1440 inner becomes the canonical
       container box (--container 1140/1200 + --container-px gutter) so the
       footer caps identically to the navbar + page content;
     • subtle white hairlines use color-mix() (modern CSS, S72 direction);
     • small body text uses --muted-accessible / --light for WCAG AA contrast
       (the prototype's flat --muted #6b6b75 fails 4.5:1 on --dark-2).

   ALL rules are scoped under `.arech-footer` so nothing leaks into the theme.
   ============================================================ */

.arech-footer {
    background: var(--dark-2);
    border-top: 1px solid color-mix(in oklch, var(--white) 4%, transparent);
    padding-block: var(--space-9) var(--space-7);
    color: var(--light);
    font-family: var(--font-body);
}

.arech-footer__inner {
    max-width: calc(var(--container) + 2 * var(--container-px));
    margin-inline: auto;
    padding-inline: var(--container-px);
}

/* -------- COLUMN GRID -------- */
.arech-footer__cols {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
}
@media (min-width: 768px) {
    .arech-footer__cols {
        grid-template-columns: 1fr 1fr 1fr;
        grid-template-areas:
            "brand brand brand"
            "products company legal";
        gap: var(--space-5);
    }
    .arech-footer__col--brand    { grid-area: brand; }
    .arech-footer__col--products { grid-area: products; }
    .arech-footer__col--company  { grid-area: company; }
    .arech-footer__col--legal    { grid-area: legal; }
}
@media (min-width: 1024px) {
    .arech-footer__cols {
        grid-template-columns: 2fr 1fr 1fr 1fr;
        grid-template-areas: "brand products company legal";
        gap: var(--space-6);
    }
}

/* Discrete vertical separators sitting in the middle of the column gap. */
@media (min-width: 768px) {
    .arech-footer__col--company,
    .arech-footer__col--legal { position: relative; }
    .arech-footer__col--company::before,
    .arech-footer__col--legal::before {
        content: '';
        position: absolute;
        inset-inline-start: calc(var(--space-5) / -2);
        inset-block: 0;
        inline-size: 1px;
        background: color-mix(in oklch, var(--white) 6%, transparent);
    }
}
@media (min-width: 1024px) {
    .arech-footer__col--products { position: relative; }
    .arech-footer__col--products::before {
        content: '';
        position: absolute;
        inset-inline-start: calc(var(--space-6) / -2);
        inset-block: 0;
        inline-size: 1px;
        background: color-mix(in oklch, var(--white) 6%, transparent);
    }
    .arech-footer__col--company::before,
    .arech-footer__col--legal::before {
        inset-inline-start: calc(var(--space-6) / -2);
    }
}

/* -------- BRAND COLUMN -------- */
.arech-footer__col--brand {
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
}
.arech-footer__logo {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    text-decoration: none;
    align-self: flex-start;
}
.arech-footer__logo:focus-visible {
    outline: 2px solid var(--orange);
    outline-offset: 2px;
}
.arech-footer__logo-img {
    height: 44px;
    width: auto;
    display: block;
}
.arech-footer__tagline {
    font-style: italic;
    font-weight: 300;
    font-size: 14px;
    line-height: 1.6;
    color: var(--muted-accessible);
    max-width: 42ch;
    margin: 0;
}

/* Social media row */
.arech-footer__social {
    list-style: none;
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin: 0;
    padding: 0;
}
.arech-footer__social a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    color: var(--muted-accessible);
    text-decoration: none;
    border-radius: var(--radius-xs);
    transition: color var(--motion-fast) var(--ease-standard),
                background var(--motion-fast) var(--ease-standard);
}
.arech-footer__social a:hover,
.arech-footer__social a:focus-visible {
    color: var(--off-white);
    background: color-mix(in oklch, var(--white) 5%, transparent);
}
.arech-footer__social a:focus-visible {
    outline: 2px solid var(--orange);
    outline-offset: 2px;
}
.arech-footer__social svg {
    width: 18px;
    height: 18px;
    display: block;
}

/* -------- LINK COLUMNS -------- */
.arech-footer__head {
    font-family: var(--font-headline);
    font-weight: 500;
    font-size: 20px;
    line-height: 1.3;
    color: var(--off-white);
    margin: 0 0 var(--space-5);
}
.arech-footer__links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    margin: 0;
    padding: 0;
}
.arech-footer__links a {
    display: inline-flex;
    align-items: center;
    min-height: 24px;
    font-size: 14px;
    font-weight: 400;
    color: var(--light);
    text-decoration: none;
    transition: color var(--motion-fast) var(--ease-standard);
}
.arech-footer__links a:hover,
.arech-footer__links a:focus-visible { color: var(--off-white); }
.arech-footer__links a:focus-visible {
    outline: 2px solid var(--orange);
    outline-offset: 2px;
}
.arech-footer__links .arech-footer__all {
    color: var(--orange);
    font-weight: 500;
    margin-top: var(--space-2);
}
.arech-footer__links .arech-footer__all:hover,
.arech-footer__links .arech-footer__all:focus-visible { color: var(--orange-bright); }

/* -------- BASE ROW -------- */
.arech-footer__base {
    margin-top: var(--space-8);
    padding-top: var(--space-7);
    border-top: 1px solid color-mix(in oklch, var(--white) 4%, transparent);
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-5);
}
@media (min-width: 1024px) {
    .arech-footer__base {
        grid-template-columns: 1fr auto;
        align-items: start;
        gap: var(--space-8);
    }
}
.arech-footer__copyright {
    font-size: 13px;
    line-height: 1.55;
    color: var(--muted-accessible);
    max-width: 60ch;
    margin: 0;
}
.arech-footer__addresses {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-family: var(--font-mono);
    font-size: 11px;
    line-height: 1.7;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--muted-accessible);
    font-style: normal;
}
@media (min-width: 1024px) {
    .arech-footer__addresses {
        text-align: end;
        align-items: flex-end;
    }
}

/* Images inside the footer never overflow (responsive standard §). */
.arech-footer img {
    max-width: 100%;
    height: auto;
    display: block;
}

@media (prefers-reduced-motion: reduce) {
    .arech-footer__social a { transition: none; }
    .arech-footer__links a { transition: none; }
}