/* About & contact page — footer section. Same family as the homepage and
   services footers (Bold Agency, Minimal): the dark `primary-900` band with a
   frosted-glass panel, a blob top-right, logo + wordmark, three nav columns,
   two contact icons and a baseline with the copyright and the photo credits.
   Mobile-first: one column, fluid widths only — no fixed px layout widths and
   no 100vw, so there is no horizontal scroll at 320px. Tablet (>=48em) puts
   the nav columns side by side; desktop (>=64em) is the 50/50 brand/directory
   split. Colours and type come from css/design-tokens.css only. */

.about-footer {
  --about-footer-delay: 0ms;
  position: relative;
  isolation: isolate;
  overflow: hidden;                      /* decoration never causes side-scroll */
  width: 100%;
  padding-block: var(--space-section) var(--space-10);
  color: var(--color-text-on-dark);
  background-color: var(--color-primary-900);
  background-image: repeating-linear-gradient(
    135deg,
    rgba(250, 250, 249, 0.055) 0 2px,
    rgba(250, 250, 249, 0) 2px 12px
  );
}

/* decorative: blob top-right, matching the hero and contact band */
.about-footer__blob {
  position: absolute;
  inset-block-start: -22%;
  inset-inline-end: -14%;
  z-index: -1;
  width: min(34rem, 72%);
  height: auto;
  color: var(--color-primary-600);
  opacity: 0.5;
  pointer-events: none;
}

.about-footer__container {
  position: relative;
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

/* frosted-glass panel holding the whole footer body */
.about-footer__panel {
  display: grid;
  grid-template-columns: 1fr;            /* mobile: stack */
  gap: var(--space-10);
  padding: clamp(var(--space-6), 4vw, var(--space-10));
  border: 1px solid rgba(250, 250, 249, 0.16);
  border-radius: var(--radius-md);
  background-color: rgba(23, 44, 34, 0.55);
  backdrop-filter: blur(12px) saturate(120%);
  box-shadow: var(--shadow-md);
}

/* --- brand half --- */
.about-footer__brand {
  display: grid;
  gap: var(--space-3);
  align-content: start;
}

.about-footer__logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-neutral-50);
  text-decoration: none;
  justify-self: start;
}

.about-footer__logo-image {
  width: 3rem;
  height: 3rem;
  flex: none;
}

.about-footer__wordmark {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--letter-tight);
}

.about-footer__heading {
  font-family: var(--font-heading);
  font-size: clamp(var(--text-xl), 3vw + 0.5rem, var(--text-3xl));
  font-weight: var(--weight-semibold);
  line-height: var(--leading-tight);
  letter-spacing: var(--letter-tight);
  color: var(--color-neutral-50);
}

.about-footer__subheading {
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-neutral-200);
}

/* --- directory half --- */
.about-footer__directory {
  display: grid;
  gap: var(--space-8);
  align-content: start;
}

.about-footer__columns {
  display: grid;
  grid-template-columns: 1fr;            /* mobile: stack */
  gap: var(--space-6);
}

.about-footer__column-title {
  margin-block-end: var(--space-3);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  letter-spacing: var(--letter-wide);
  text-transform: uppercase;
  color: var(--color-accent-200);
}

.about-footer__links {
  display: grid;
  gap: var(--space-2);
  list-style: none;
  margin: 0;
  padding: 0;
}

.about-footer__link,
.about-footer__fact {
  font-size: var(--text-sm);
  line-height: var(--leading-snug);
  color: var(--color-neutral-100);
}

.about-footer__link {
  position: relative;
  display: inline-block;
  text-decoration: none;
  padding-block-end: 2px;
  transition: color var(--duration-fast) var(--ease-default);
}

/* link hover: fill-sweep underline in terracotta */
.about-footer__link::after {
  content: '';
  position: absolute;
  inset-inline: 0;
  inset-block-end: 0;
  height: 1px;
  transform: scaleX(0);
  transform-origin: left;
  background-color: var(--color-accent-300);
  transition: transform var(--duration-normal) var(--ease-out);
}

.about-footer__link:hover,
.about-footer__link:focus-visible {
  color: var(--color-accent-200);
}

.about-footer__link:hover::after,
.about-footer__link:focus-visible::after {
  transform: scaleX(1);
}

.about-footer__fact {
  color: var(--color-neutral-300);
}

/* contact icons */
.about-footer__socials {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  list-style: none;
  margin: 0;
  padding: 0;
}

.about-footer__social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid rgba(250, 250, 249, 0.24);
  border-radius: var(--radius-full);
  color: var(--color-neutral-50);
  transition: background-color var(--duration-fast) var(--ease-default),
              transform var(--duration-fast) var(--ease-default);
}

.about-footer__social-link:hover,
.about-footer__social-link:focus-visible {
  background-color: var(--color-accent-600);
  border-color: var(--color-accent-600);
  transform: translateY(-2px);
}

.about-footer__social-icon {
  width: 1.375rem;
  height: 1.375rem;
}

/* --- baseline --- */
.about-footer__baseline {
  display: grid;
  gap: var(--space-2);
  margin-block-start: var(--space-8);
  padding-block-start: var(--space-5);
  border-block-start: 1px solid rgba(250, 250, 249, 0.2);
}

.about-footer__copyright {
  font-size: var(--text-sm);
  color: var(--color-neutral-200);
}

/* photo credits — a licence condition, so they stay legible, not hidden */
.about-footer__credits {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-4);
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: var(--text-xs);
  line-height: var(--leading-normal);
  color: var(--color-neutral-300);
}

.about-footer__credit a {
  color: var(--color-neutral-100);
}

.about-footer__credit-licence::before {
  content: ' (';
  color: var(--color-neutral-300);
}

.about-footer__credit-licence::after {
  content: ')';
  color: var(--color-neutral-300);
}

/* --- entrance: fade-up, 100ms between grid items --- */
/* Static markup is visible by default; `is-animated` is only added by JS. */
@media (prefers-reduced-motion: no-preference) {
  .about-footer.is-animated .about-footer__brand,
  .about-footer.is-animated .about-footer__column,
  .about-footer.is-animated .about-footer__social,
  .about-footer.is-animated .about-footer__baseline {
    opacity: 0;
    transform: translateY(var(--reveal-distance));
  }

  .about-footer.is-animated.is-ready .about-footer__brand,
  .about-footer.is-animated.is-ready .about-footer__column,
  .about-footer.is-animated.is-ready .about-footer__social,
  .about-footer.is-animated.is-ready .about-footer__baseline {
    opacity: 1;
    transform: none;
    transition: opacity var(--duration-slow) var(--ease-out) var(--about-footer-delay, 0ms),
                transform var(--duration-slow) var(--ease-out) var(--about-footer-delay, 0ms);
  }

  .about-footer.is-animated .about-footer__baseline {
    --about-footer-delay: 600ms;
  }
}

/* Tablet: nav columns side by side. */
@media (min-width: 48em) {
  .about-footer__columns {
    grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr));
  }
}

/* Desktop: 50/50 brand / directory split. */
@media (min-width: 64em) {
  .about-footer__panel {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-16);
    align-items: start;
  }

  .about-footer__baseline {
    grid-column: 1 / -1;
    grid-template-columns: 1fr auto;
    align-items: baseline;
    gap: var(--space-6);
  }

  .about-footer__credits {
    justify-content: flex-end;
    max-width: 44rem;
  }
}