/* Footer: brand block, three link groups, and the legal bar with live status and back-to-top. */

.foot {
  margin-top: var(--sp-section);
  padding-top: 32px;
  border-top: 1px solid var(--rule);
  color: var(--ink-60);
  font-size: 13px;
  line-height: 1.5;
}
.foot-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr));
  align-items: start;
  gap: 28px 24px;
}
.foot-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
  padding-right: 12px;
}
/* the AIVC icon, static, in Black 100 at 32px tall: its safe zone is 16px of clear space on every side */
.foot .foot-mark,
.foot .foot-mark:hover,
.foot .foot-mark:focus-visible {
  margin: 0 0 4px;
  padding: 0;
  color: var(--logo);
}
.foot-mark svg {
  display: block;
  flex: none;
  width: 134.4px;
  height: 32px;
}
.foot-line {
  max-width: 22ch;
  margin: 0;
  color: var(--ink-68);
  text-wrap: pretty;
}
.foot-head {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  line-height: 14px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.foot-head {
  color: var(--ink);
}
.foot-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
}
.foot-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.foot a {
  display: inline-flex;
  align-items: center;
  margin-block: -3px;
  padding-block: 3px;
  color: var(--ink-68);
  text-decoration: none;
  transition: color var(--dur-hover) var(--ease-hover);
}
.foot a:hover,
.foot a:focus-visible {
  color: var(--ink);
}

/* external links carry the small door arrow */
.foot-links a[data-external] {
  --door: 10px;
}
.foot-links a[data-external]::after {
  content: "" / " (external)";
  flex: none;
  width: var(--door);
  height: var(--door);
  margin-inline-start: calc(var(--door) / 2);
  background-color: var(--ink-45);
  -webkit-mask: var(--door-mask) 0 calc(-1 * var(--door)) / calc(2 * var(--door)) calc(2 * var(--door)) no-repeat;
  mask: var(--door-mask) 0 calc(-1 * var(--door)) / calc(2 * var(--door)) calc(2 * var(--door)) no-repeat;
  translate: 0 0.5px;
  transition: background-color var(--dur-hover) var(--ease-hover);
}
.foot-links a[data-external]:hover::after,
.foot-links a[data-external]:focus-visible::after {
  background-color: var(--ink);
  -webkit-mask-position: calc(-1 * var(--door)) 0;
  mask-position: calc(-1 * var(--door)) 0;
  transition:
    background-color var(--dur-hover) var(--ease-hover),
    -webkit-mask-position 0.32s var(--ease-out),
    mask-position 0.32s var(--ease-out);
}


/* ---------- legal bar ---------- */

.foot-legal {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-top: 32px;
  padding-top: 16px;
  border-top: 1px solid var(--rule);
  font-size: 12px;
}


.foot-copy,
.foot-internal {
  white-space: nowrap;
}
.foot-internal {
  color: var(--ink-45);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.foot-top {
  gap: 5px;
  margin-left: auto;
  white-space: nowrap;
}
.foot-up {
  display: inline-block;
  font-weight: 400;
  transition: translate var(--dur-hover) var(--ease-hover);
}
.foot-top:hover .foot-up,
.foot-top:focus-visible .foot-up {
  translate: 0 -2px;
}

@media (width <= 640px) {
  .foot-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px 20px;
  }
  .foot-brand {
    grid-column: 1 / -1;
    padding-right: 0;
  }
  .foot-links {
    gap: 10px;
  }
  .foot-legal {
    flex-wrap: wrap;
    row-gap: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .foot a,
  .foot-up {
    transition: none;
  }
  .foot-links a[data-external]::after,
  .foot-links a[data-external]:hover::after {
    -webkit-mask-position: 0 calc(-1 * var(--door));
    mask-position: 0 calc(-1 * var(--door));
    transition: none;
  }
}