.footer {
  background: var(--c-bg-0);
  border-top: 1px solid var(--c-line);
  padding: 5rem var(--content-pad) 2rem;
  position: relative;
}

.footer__inner {
  max-width: var(--content-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 4rem;
  border-bottom: 1px solid var(--c-line);
}

.footer__col h3 {
  font-family: var(--ff-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--c-text-3);
  margin-bottom: 1.25rem;
}
.footer__col ul {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}
.footer__col a {
  font-size: 0.95rem;
  color: var(--c-text-2);
  transition: color var(--dur-base) var(--ease-out-expo);
}
.footer__col a:hover { color: var(--c-text); }

.footer__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--ff-display);
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: -0.01em;
  margin-bottom: 1rem;
  color: var(--c-text);
}
.footer__brand-text strong {
  background: var(--grad-primary);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  font-style: italic;
}

.footer__tagline {
  color: var(--c-text-2);
  font-size: 0.92rem;
  line-height: 1.55;
  max-width: 32ch;
  margin-bottom: 1.5rem;
}

.footer__social {
  display: flex;
  gap: 0.75rem;
}
.footer__social a {
  width: 42px; height: 42px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  border: 1px solid var(--c-line);
  background: rgba(255,255,255,0.02);
  color: var(--c-text-2);
  transition: color var(--dur-base) var(--ease-out-expo),
              border-color var(--dur-base) var(--ease-out-expo),
              background var(--dur-base) var(--ease-out-expo),
              transform var(--dur-base) var(--ease-out-expo);
}
.footer__social a:hover {
  color: #fff;
  border-color: transparent;
  background: var(--grad-primary);
  transform: translateY(-2px);
}

.footer__bottom {
  max-width: var(--content-max);
  margin: 2rem auto 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.82rem;
  color: var(--c-text-3);
  flex-wrap: wrap;
}
.footer__bottom a {
  color: var(--c-text-2);
  transition: color var(--dur-base) var(--ease-out-expo);
}
.footer__bottom a:hover { color: var(--c-text); }

@media (max-width: 880px) {
  .footer__inner {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
    padding-bottom: 2.5rem;
  }
  .footer__col--brand { grid-column: 1 / -1; }
}
@media (max-width: 540px) {
  .footer__inner { grid-template-columns: 1fr; }
  .footer__bottom { justify-content: center; text-align: center; }
}