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

.footer {
  margin-top: 6rem;
  background: linear-gradient(180deg, var(--bg-2), var(--bg));
  border-top: 1px solid rgba(59, 130, 246, 0.18);
  padding: 4rem 0 2rem;
  position: relative;
  z-index: 2;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}
.footer__brand img {
  height: 80px;
  width: auto;
  margin-bottom: 0.75rem;
  filter: drop-shadow(0 0 16px rgba(59, 130, 246, 0.4));
}
.footer__brand p {
  color: var(--text-dim);
  font-size: 0.875rem;
  max-width: 320px;
}

.footer__col h4 {
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accent-hot);
  margin: 0 0 1rem;
  background: none;
  -webkit-text-fill-color: var(--accent-hot);
}
.footer__col ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.footer__col a {
  color: var(--text-dim);
  font-size: 0.875rem;
}
.footer__col a:hover { color: var(--accent-hot); }

.footer__social { display: flex; gap: 0.75rem; }
.footer__social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: 4px;
  color: var(--accent-hot);
  font-family: var(--font-display);
  font-size: 0.875rem;
  transition: all 200ms var(--ease);
}
.footer__social a:hover {
  border-color: var(--accent-hot);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.footer__bottom {
  padding-top: 1.5rem;
  border-top: 1px solid rgba(59, 130, 246, 0.1);
  text-align: center;
  color: var(--text-dim);
  font-size: 0.875rem;
}

@media (max-width: 768px) {
  .footer__grid { grid-template-columns: 1fr; gap: 2rem; }
}