/* ==========================================================================
   Site footer
   ========================================================================== */

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.site-footer {
  background: var(--color-footer-bg);
  color: var(--color-footer-fg);
  font-family: var(--font-body);
  font-size: var(--type-body);
  line-height: var(--leading-body);
  border-top: 1px solid var(--color-footer-rule);
}

.site-footer__inner {
  max-width: var(--page-max);
  margin-inline: auto;
  padding: var(--space-2xl) var(--page-gutter) var(--space-xl);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
  gap: var(--space-2xl);
  align-items: start;
}

/* --- Lead column --------------------------------------------------------- */
.site-footer__heading {
  margin: 0 0 var(--space-md);
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-heading);
  text-transform: uppercase;
}

.signup { margin-bottom: var(--space-lg); }
.signup__row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2xs);
  margin-bottom: var(--space-xs);
}
.signup__input {
  flex: 1 1 12rem;
  min-width: 0;
  padding: var(--space-2xs) var(--space-xs);
  font: inherit;
  font-size: var(--type-small);
  color: var(--indigo);
  background: var(--pure-white);
  /* source: form-field-style-solid, form-field-border-all, stroke = darkAccent */
  border: 1px solid var(--indigo);
  border-radius: var(--radius-sm);
}
.signup__input::placeholder { color: hsla(var(--indigo-hsl), 0.55); }

.signup__disclaimer {
  margin: 0;
  font-size: var(--type-fine);
  line-height: 1.5;
  color: hsla(var(--indigo-hsl), 0.72);
}

/* --- Social -------------------------------------------------------------- */
.social { margin-bottom: var(--space-lg); }
.social__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin: 0;
  padding: 0;
  list-style: none;
}
.social__link {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  color: var(--indigo);
  border-radius: var(--radius-pill);
  transition: background var(--duration-fast) var(--ease),
              color var(--duration-fast) var(--ease);
}
.social__link:hover,
.social__link:focus-visible {
  background: var(--indigo);
  color: var(--cta-yellow);
}
.social__link svg { width: 20px; height: 20px; fill: currentColor; }

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

/* --- Link columns -------------------------------------------------------- */
.site-footer__columns {
  display: grid;
  /* Four explicit tracks, not auto-fit: the source has four columns —
     Issues · About · Get Involved · (unheaded) — and auto-fit only ever fit
     three at this container width, wrapping the fourth onto a second row
     underneath Issues. */
  /* Issues carries the longest labels ("Ending Homelessness"), so its track
     is weighted rather than left to wrap at an equal quarter width. */
  grid-template-columns: 1.45fr 1fr 1fr 1.05fr;
  gap: var(--space-md);
}
/* The source's fourth column has no heading. An empty heading element keeps
   its first link on the same baseline as the other three columns'. */
.site-footer__col-heading {
  margin: 0 0 var(--space-xs);
  min-height: 1lh;
  font-family: var(--font-ui);
  font-size: var(--type-col-head);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-cta);
  text-transform: uppercase;
}
.site-footer__list { margin: 0; padding: 0; list-style: none; }
.site-footer__list li + li { margin-top: var(--space-3xs); }
.site-footer__link {
  color: inherit;
  font-size: var(--type-small);
  text-decoration: none;
}
.site-footer__link:hover,
.site-footer__link:focus-visible {
  color: var(--color-link);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* --- Legal --------------------------------------------------------------- */
.site-footer__legal {
  border-top: 1px solid var(--color-footer-rule);
}
.site-footer__disclaimer {
  max-width: var(--page-max);
  margin-inline: auto;
  padding: var(--space-md) var(--page-gutter);
  font-size: var(--type-fine);
  line-height: 1.6;
  color: hsla(var(--indigo-hsl), 0.72);
}
.site-footer__disclaimer a { color: var(--color-link); text-underline-offset: 3px; }

.site-footer :focus-visible {
  outline: 2px solid var(--color-focus-ring);
  outline-offset: 3px;
  border-radius: 2px;
}

/* --- Breakpoint (768px — keep in sync with --bp-mobile) ------------------ */
@media (max-width: 767.98px) {
  .site-footer__inner {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    padding-top: var(--space-xl);
  }
  .site-footer__columns {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-md) var(--space-lg);
  }
}