/**
 * Site footer.
 *
 * Dark panel using --color-shell (#262626), the background colour extracted
 * from the legacy body rule. White on that measures 15.1:1, so text contrast is
 * comfortable throughout.
 */

.site-footer {
  --_link: var(--color-surface);
  --_muted: #b2b2b2; /* 8.6:1 on #262626. Safe for body text. */
  --_logo-size: clamp(3rem, 2rem + 4vw, 5rem);
  --_logo-gap: calc(var(--space-l) * -1 + var(--space-2xs));

  padding-block: var(--space-xl);
  padding-inline: var(--gutter);
  background-color: var(--color-shell);
  color: var(--color-surface);
}

.site-footer__inner {
  display: grid;
  gap: var(--space-l);
  inline-size: 100%;
  max-inline-size: var(--container);
  margin-inline: auto;
  text-align: center;
  justify-items: center;
}

.site-footer__block {
  display: grid;
  gap: var(--space-2xs);
  justify-items: center;
}

/* ----------------------------------------------------------------------
   Address
   ---------------------------------------------------------------------- */

.site-footer__block--logo {
  margin-block-end: var(--_logo-gap);
}

.site-footer__logo-link {
  display: block;
  line-height: 0;
}

.site-footer__logo-link:focus-visible {
  outline: var(--focus-width) solid var(--color-surface);
  outline-offset: var(--focus-offset);
}

.site-footer__logo {
  block-size: var(--_logo-size);
  inline-size: auto;
  max-inline-size: min(80vw, 20rem);
  object-fit: contain;
}

/* ----------------------------------------------------------------------
   Logo variants
   ---------------------------------------------------------------------- */

.site-footer--logo-small {
  --_logo-size: clamp(2rem, 1.5rem + 2vw, 3rem);
}

.site-footer--logo-medium {
  --_logo-size: clamp(3rem, 2rem + 4vw, 5rem);
}

.site-footer--logo-large {
  --_logo-size: clamp(4rem, 2.5rem + 6vw, 8rem);
}

.site-footer--logospace-tight {
  --_logo-gap: calc(var(--space-l) * -1 + var(--space-2xs));
}

.site-footer--logospace-default {
  --_logo-gap: 0;
}

.site-footer--logospace-loose {
  --_logo-gap: var(--space-m);
}

.site-footer__org {
  font-family: var(--font-ui);
  font-size: var(--step-0);
  font-weight: var(--weight-medium);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
}

.site-footer__address {
  font-style: normal; /* <address> italicises by default. */
  color: var(--_muted);
  line-height: var(--leading-snug);
}

.site-footer__address p {
  margin: 0;
}

.site-footer__map-link {
  color: var(--_link);
  text-underline-offset: 0.15em;
}

.site-footer__map-link:hover {
  color: var(--color-brand);
}

/* ----------------------------------------------------------------------
   Social

   Icons carry no accessible name of their own; the visually hidden label on
   each link supplies it. Never remove those spans.
   ---------------------------------------------------------------------- */

.social-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2xs);
  margin: 0;
  padding: 0;
  list-style: none;
}

.social-links__link {
  display: grid;
  place-items: center;

  /* 44px minimum target, even though the icon itself is smaller. */
  inline-size: 2.75rem;
  block-size: 2.75rem;
  border-radius: 50%;
  color: var(--_link);
  transition: color var(--duration) var(--easing),
              background-color var(--duration) var(--easing);
}

.social-links__link:hover {
  color: var(--color-shell);
  background-color: var(--color-surface);
}

.social-links__link:focus-visible {
  outline: var(--focus-width) solid var(--color-surface);
  outline-offset: var(--focus-offset);
}

.social-links__icon {
  inline-size: 1.5rem;
  block-size: 1.5rem;
}

/* ----------------------------------------------------------------------
   Legal
   ---------------------------------------------------------------------- */

.site-footer__block--legal {
  gap: var(--space-3xs);
  padding-block-start: var(--space-m);
  border-block-start: var(--border-width) solid rgb(255 255 255 / 0.15);
  inline-size: 100%;
}

.site-footer__copyright,
.site-footer__legal-links {
  margin: 0;
  font-size: var(--step--1);
  color: var(--_muted);
}

.site-footer__legal-link {
  color: var(--_link);
  text-underline-offset: 0.15em;

  /* Small text, so the tap target is enlarged without enlarging the text. */
  display: inline-block;
  min-block-size: 2.75rem;
  line-height: 2.75rem;
}

.site-footer__legal-link:hover {
  color: var(--color-brand);
}