/* ── FOOTER ──────────────────────────────────────────────────── */
.footer {
  background: #010f1c;
  color: rgba(255, 255, 255, 0.6);
  padding: 4rem 0 2rem;
}
.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}
.footer__logo {
  margin-bottom: 1rem;
}
.footer__logo a {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  background: none;
}
.footer__tagline {
  font-size: 0.85rem;
  line-height: 1.6;
  margin-bottom: 1.25rem;
}
.footer__social {
  display: flex;
  gap: 0.75rem;
}
.footer__social a {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.55);
  transition: all var(--transition);
  font-weight: 700;
}
.footer__social a:hover {
  background: var(--sky);
  color: var(--white);
}
.footer__col h4 {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.3);
  margin-bottom: 1.1rem;
}
.footer__col li {
  margin-bottom: 0.55rem;
}
.footer__col a {
  font-size: 0.84rem;
  color: rgba(255, 255, 255, 0.5);
  transition: color var(--transition);
}
.footer__col a:hover {
  color: var(--sky);
}
.footer__bottom {
  background: #010f1c;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  padding: 1.25rem 0;
  font-size: 0.78rem;
}
.footer__bottom a {
  color: rgba(255, 255, 255, 0.35);
}
.footer__bottom a:hover {
  color: var(--sky);
}

/* Footer social icon links */
.footer__social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.7);
  transition:
    background 0.2s,
    color 0.2s;
  text-decoration: none;
}
.footer__social-link:hover {
  background: var(--sky);
  color: white;
}
.footer__social {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

/* Footer wordmark: X + stacked text, white/sky on dark bg */
.footer__x-logo {
  height: 34px;
  width: auto;
  flex-shrink: 0;
  /* Natural colors: sky arm stays sky, navy arm becomes lighter on dark bg */
  filter: brightness(1.4) saturate(1.2);
  opacity: 1;
}
.footer__wordmark {
  font-family: var(--font-heading);
  font-size: 0.58rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: flex;
  flex-direction: column;
}
.footer__wordmark span:nth-child(1) {
  color: rgba(255, 255, 255, 0.9);
  margin-left: 0;
}
.footer__wordmark span:nth-child(2) {
  color: rgba(255, 255, 255, 0.9);
  margin-left: 0.35em;
}
.footer__wordmark span:nth-child(3) {
  color: rgba(255, 255, 255, 0.9);
  margin-left: 0.7em;
}