/* ==========================================================================
   BLCKGROOVE — Footer
   Dark premium glass: near-black translucent surface, one restrained blur,
   a hairline border and a soft inner highlight for depth. Black stays
   dominant; translucent red gradients add a warm glass finish.
   ========================================================================== */

.site-footer {
  position: relative;
  background:
    radial-gradient(ellipse at 10% 0%, rgba(227, 32, 43, 0.10), transparent 65%),
    radial-gradient(ellipse at 100% 100%, rgba(179, 18, 26, 0.06), transparent 65%),
    linear-gradient(180deg, rgba(23, 23, 27, 0.66) 0%, rgba(8, 8, 10, 0.92) 100%);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid rgba(255, 105, 115, 0.14);
  box-shadow:
    inset 0 1px 0 rgba(255, 205, 210, 0.08),
    inset 0 24px 60px rgba(227, 32, 43, 0.02),
    0 -24px 60px rgba(0, 0, 0, 0.4);
}

.site-footer__inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: calc(var(--space-8) + var(--space-4)) var(--edge-padding) var(--space-6);
}

/* ---- Top area: brand / nav / social ---- */

.site-footer__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-7);
  padding-bottom: var(--space-8);
}

.site-footer__brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-4);
  min-width: 0;
  text-align: left;
}

.site-footer__logo-link {
  display: inline-flex;
}

.site-footer__logo {
  height: 40px;
  width: auto;
  border-radius: 4px;
}

.site-footer__tagline {
  margin: 0;
  max-width: 240px;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1.6;
  text-transform: uppercase;
  color: var(--color-fog);
}

.site-footer__nav {
  padding-top: var(--space-1);
  flex-shrink: 0;
  margin-left: auto;
  text-align: left;
}

.site-footer__links {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-3);
}

.site-footer__link {
  position: relative;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: var(--nav-link-tracking);
  text-transform: uppercase;
  color: var(--color-bone);
  padding: var(--space-2) 0;
  transition: color var(--duration-fast) var(--ease-standard);
}

.site-footer__link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 1px;
  background: var(--color-red-hot);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-fast) var(--ease-standard);
}

.site-footer__link:hover,
.site-footer__link:focus-visible {
  color: var(--color-white);
}

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

/* ---- Social icons ---- */

.site-footer__social {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: var(--space-3);
}

.site-footer__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid rgba(227, 32, 43, 0.14);
  background: linear-gradient(145deg, rgba(255, 220, 225, 0.08), rgba(179, 18, 26, 0.04));
  box-shadow: inset 0 1px 0 rgba(255, 220, 225, 0.12);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  color: var(--color-bone);
  transition:
    color var(--duration-fast) var(--ease-standard),
    border-color var(--duration-fast) var(--ease-standard),
    background-color var(--duration-fast) var(--ease-standard),
    transform var(--duration-fast) var(--ease-standard);
}

.site-footer__icon svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

.site-footer__icon:hover,
.site-footer__icon:focus-visible {
  color: var(--color-white);
  border-color: var(--color-red-hot);
  background: rgba(227, 32, 43, 0.16);
  transform: translateY(-2px);
}

/* ---- Bottom bar ---- */

.site-footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-top: var(--space-5);
  border-top: 1px solid rgba(227, 32, 43, 0.14);
}

.site-footer__copyright {
  margin: 0;
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--color-fog);
}

.site-footer__back-to-top {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: var(--nav-link-tracking);
  text-transform: uppercase;
  color: var(--color-bone);
  transition: color var(--duration-fast) var(--ease-standard);
}

.site-footer__back-to-top:hover,
.site-footer__back-to-top:focus-visible {
  color: var(--color-red-hot);
}

.site-footer__back-to-top-arrow {
  display: inline-block;
  transition: transform var(--duration-fast) var(--ease-standard);
}

.site-footer__back-to-top:hover .site-footer__back-to-top-arrow {
  transform: translateY(-3px);
}