/*
 * ==========================================================================
 * FOOTER — Site footer styles
 * ==========================================================================
 */

.site-footer {
  position: relative;
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  overflow: hidden;
}

/* Atmospheric top gradient */
.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--color-border-accent) 50%,
    transparent 100%
  );
}

/* --- Main footer grid --- */
.site-footer__main {
  padding-block: var(--sp-16) var(--sp-12);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-10);
}

@media (min-width: 640px) {
  .site-footer__main {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .site-footer__main {
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--sp-12);
  }
}

/* --- Brand column --- */
.footer-brand__logo {
  margin-bottom: var(--sp-4);
}

.footer-brand__name {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  font-weight: var(--fw-black);
  letter-spacing: var(--ls-widest);
  text-transform: uppercase;
  color: var(--color-text-primary);
  margin-bottom: var(--sp-2);
}

.footer-brand__tagline {
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  font-style: italic;
  color: var(--color-text-muted);
  line-height: var(--lh-relaxed);
  margin-bottom: var(--sp-6);
}

/* Social links */
.footer-social {
  display: flex;
  gap: var(--sp-3);
  flex-wrap: wrap;
}

.footer-social__link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  transition: all var(--transition-base);
}

.footer-social__link:hover {
  border-color: var(--color-border-accent);
  color: var(--color-accent-text);
  background: var(--color-bg-tertiary);
  box-shadow: var(--shadow-glow);
}

.footer-social__link svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

/* --- Navigation columns --- */
.footer-nav__title {
  font-family: var(--font-ui);
  font-size: var(--fs-xs);
  font-weight: var(--fw-bold);
  letter-spacing: var(--ls-widest);
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--sp-4);
}

.footer-nav__list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.footer-nav__link {
  font-family: var(--font-ui);
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-base);
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.footer-nav__link::before {
  content: '';
  display: block;
  width: 4px;
  height: 4px;
  border-radius: var(--radius-full);
  background: var(--color-accent-mid);
  opacity: 0;
  transition: opacity var(--transition-base), transform var(--transition-base);
  transform: translateX(-4px);
}

.footer-nav__link:hover {
  color: var(--color-text-primary);
}

.footer-nav__link:hover::before {
  opacity: 1;
  transform: translateX(0);
}

/* --- Bottom bar --- */
.site-footer__bottom {
  border-top: 1px solid var(--color-border);
  padding-block: var(--sp-6);
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  align-items: center;
  text-align: center;
}

@media (min-width: 768px) {
  .site-footer__bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.footer-copyright {
  font-family: var(--font-ui);
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
}

.footer-legal-links {
  display: flex;
  gap: var(--sp-4);
  flex-wrap: wrap;
  justify-content: center;
}

.footer-legal-links a {
  font-family: var(--font-ui);
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-base);
}

.footer-legal-links a:hover {
  color: var(--color-text-secondary);
}