.site-footer {
  margin-top: auto;
  border-top: 1px solid color-mix(in srgb, var(--border) 60%, transparent);
  background: linear-gradient(
    180deg,
    var(--surface) 0%,
    color-mix(in srgb, var(--surface) 97%, var(--bg) 3%) 50%,
    color-mix(in srgb, var(--surface) 94%, var(--bg) 6%) 100%
  );
  padding: clamp(4rem, 8vw, 6rem) 0 2.5rem;
  position: relative;
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: min(800px, 80%);
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    color-mix(in srgb, var(--accent-300) 50%, transparent) 25%,
    color-mix(in srgb, var(--accent-200) 70%, transparent) 50%,
    color-mix(in srgb, var(--accent-300) 50%, transparent) 75%,
    transparent 100%
  );
}

.site-footer::after {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: min(400px, 60%);
  height: 80px;
  background: radial-gradient(
    ellipse at center top,
    color-mix(in srgb, var(--accent-100) 12%, transparent) 0%,
    transparent 70%
  );
  pointer-events: none;
}

.footer__inner {
  display: grid;
  gap: 3rem;
  grid-template-columns: 1.2fr 1fr;
  align-items: start;
  margin-top: 0;
  padding-top: 0;
}

@media (max-width: 768px) {
  .footer__inner {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .footer__column--brand,
  .footer__column--cta {
    max-width: 320px;
    justify-self: center;
    text-align: center;
  }
  .footer__column--brand p {
    max-width: none;
  }
  .footer__column--brand h4::after,
  .footer__column--cta h4::after {
    display: none;
  }
}

.footer__column h4 {
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-size: 0.8rem;
  margin: 0 0 1.25rem;
  font-weight: 700;
  color: var(--fg);
  position: relative;
  padding-bottom: 0.75rem;
}

.footer__column h4::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 2rem;
  height: 2px;
  background: linear-gradient(
    90deg,
    var(--accent-500),
    var(--accent-300)
  );
  border-radius: 1px;
}

.footer__column ul {
  list-style: none;
  padding: 0;
  margin: 0.9rem 0 0;
  display: grid;
  gap: 0.6rem;
}

.footer__column ul li {
  transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.footer__column ul li:hover {
  transform: translateX(6px);
}

.footer__column ul a {
  font-size: 0.95rem;
  color: var(--fg-muted);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: color 0.25s ease;
  position: relative;
  padding: 0.15rem 0;
}

.footer__column ul a::before {
  content: "";
  width: 0;
  height: 1px;
  background: var(--accent-400);
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.footer__column ul a:hover {
  color: var(--accent-500);
}

.footer__column ul a:hover::before {
  width: 12px;
}

.footer__column--cta {
  background: linear-gradient(
    145deg,
    color-mix(in srgb, var(--accent-50) 85%, var(--surface) 15%) 0%,
    color-mix(in srgb, var(--accent-100) 60%, var(--surface) 40%) 100%
  );
  border: 1px solid color-mix(in srgb, var(--accent-200) 60%, transparent);
  border-radius: 16px;
  padding: 1.5rem 1.75rem;
  display: grid;
  gap: 1rem;
  align-content: start;
  box-shadow:
    0 4px 24px -4px color-mix(in srgb, var(--accent-500) 15%, transparent),
    0 1px 3px color-mix(in srgb, var(--accent-300) 10%, transparent),
    inset 0 1px 0 color-mix(in srgb, white 50%, transparent);
  position: relative;
  overflow: hidden;
}

.footer__column--cta::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -50%;
  width: 100%;
  height: 100%;
  background: radial-gradient(
    circle,
    color-mix(in srgb, var(--accent-200) 30%, transparent) 0%,
    transparent 60%
  );
  pointer-events: none;
}

.footer__column--cta h4 {
  color: var(--accent-800);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  margin-bottom: 0.25rem;
}

.footer__column--cta h4::after {
  background: linear-gradient(
    90deg,
    var(--accent-600),
    var(--accent-400)
  );
}

[data-theme="dark"] .footer__column--cta {
  background: linear-gradient(
    145deg,
    color-mix(in srgb, var(--accent-900) 70%, var(--surface) 30%) 0%,
    color-mix(in srgb, var(--accent-800) 50%, var(--surface) 50%) 100%
  );
  border-color: color-mix(in srgb, var(--accent-600) 40%, transparent);
  box-shadow:
    0 4px 24px -4px color-mix(in srgb, var(--accent-500) 25%, transparent),
    0 1px 3px rgba(0, 0, 0, 0.2),
    inset 0 1px 0 color-mix(in srgb, var(--accent-400) 15%, transparent);
}

[data-theme="dark"] .footer__column--cta::before {
  background: radial-gradient(
    circle,
    color-mix(in srgb, var(--accent-500) 15%, transparent) 0%,
    transparent 60%
  );
}

[data-theme="dark"] .footer__column--cta h4 {
  color: var(--accent-200);
}

.footer__column--cta p {
  font-size: 0.95rem;
  line-height: 1.65;
  margin: 0;
  color: var(--fg-muted);
  position: relative;
}

[data-theme="dark"] .footer__column--cta p {
  color: var(--accent-100);
}

.footer__column--cta .button {
  margin-top: 0.5rem;
  width: 100%;
  justify-content: center;
  padding: 0.75rem 1.25rem;
  font-size: 0.85rem;
  box-shadow:
    0 4px 12px color-mix(in srgb, var(--accent-600) 30%, transparent),
    0 1px 2px rgba(0, 0, 0, 0.1);
  position: relative;
}

.footer__column--brand {
  display: grid;
  gap: 1.25rem;
  align-content: start;
}

.footer__column--brand h4 {
  font-size: 1.25rem;
  letter-spacing: 0.08em;
  font-weight: 600;
  background: linear-gradient(
    135deg,
    var(--fg) 0%,
    var(--accent-700) 100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

[data-theme="dark"] .footer__column--brand h4 {
  background: linear-gradient(
    135deg,
    var(--fg) 0%,
    var(--accent-300) 100%
  );
  -webkit-background-clip: text;
  background-clip: text;
}

.footer__column--brand h4::after {
  display: none;
}

.footer__column--brand p {
  color: var(--fg-muted);
  font-size: 0.95rem;
  line-height: 1.7;
  margin: 0;
  max-width: 38ch;
}

.footer__column {
  display: grid;
  gap: 1rem;
  align-content: start;
}

.footer__bottom {
  width: min(1100px, 92vw);
  margin: 3.5rem auto 0;
  padding-top: 2rem;
  border-top: 1px solid color-mix(in srgb, var(--border) 50%, transparent);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1.25rem;
  font-size: 0.875rem;
  color: var(--fg-muted);
  position: relative;
}

.footer__bottom::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: min(300px, 40%);
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    color-mix(in srgb, var(--accent-300) 40%, transparent) 50%,
    transparent
  );
}

.footer__bottom > span {
  opacity: 0.85;
  font-weight: 400;
}

.footer__links {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  align-items: center;
}

.footer__links a {
  font-size: 0.875rem;
  color: var(--accent-600);
  text-decoration: none;
  transition: all 0.2s ease;
  font-weight: 500;
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
  background: color-mix(in srgb, var(--accent-100) 0%, transparent);
}

.footer__links a:hover {
  color: var(--accent-700);
  background: color-mix(in srgb, var(--accent-100) 50%, transparent);
  text-decoration: none;
}

[data-theme="dark"] .footer__links a {
  color: var(--accent-300);
}

[data-theme="dark"] .footer__links a:hover {
  color: var(--accent-200);
  background: color-mix(in srgb, var(--accent-800) 40%, transparent);
}

.footer__links span {
  font-size: 0.875rem;
  color: var(--fg-muted);
  opacity: 0.7;
  padding: 0.35rem 0.5rem;
}

.footer__links span::before {
  content: "";
  display: none;
}

.footer__links > *:not(:last-child)::after {
  content: "";
  display: inline-block;
  width: 3px;
  height: 3px;
  background: var(--border);
  border-radius: 50%;
  margin-left: 0.75rem;
  vertical-align: middle;
}

@media (max-width: 640px) {
  .footer__column--cta {
    padding: 1.25rem 1.5rem;
  }

  .footer__bottom {
    flex-direction: column;
    align-items: center;
    gap: 1.25rem;
    text-align: center;
    margin-top: 2.5rem;
    padding-top: 1.75rem;
  }

  .footer__links {
    flex-direction: column;
    justify-content: center;
    gap: 0.75rem;
  }

  .footer__links > *:not(:last-child)::after {
    display: none;
  }

  .footer__links a {
    padding: 0.5rem 1rem;
  }
}