/* ── Mega Footer ── */
.site-footer {
  background: var(--surface-2, #1f1f22);
  border-top: 1px solid var(--border, rgba(255,255,255,0.08));
  padding: 4rem 1.5rem 1.5rem;
  position: relative;
  font-family: var(--font-body, 'DM Sans', sans-serif);
  color: var(--text, #f0f0f0);
}

[data-theme="light"] .site-footer {
  background: var(--surface-2, #ebebed);
  border-top: 1px solid var(--border, rgba(0,0,0,0.08));
  color: var(--text, #111);
}

.footer-top {
  max-width: 1100px;
  margin: 0 auto 3rem;
  display: grid;
  grid-template-columns: 2.5fr 1fr 1fr 1fr;
  gap: 2rem;
}

.footer-brand .logo {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text, #f0f0f0);
  font-family: var(--font-display, 'Syne', sans-serif);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 1rem;
  text-decoration: none;
}

[data-theme="light"] .footer-brand .logo {
  color: var(--text, #111);
}

.footer-brand .logo-icon {
  color: #ff2d2d; /* Red color matching NexToolsX main logo */
  font-size: 1.2rem;
  filter: drop-shadow(0 0 6px rgba(255, 45, 45, 0.25));
}

.footer-desc {
  color: var(--text-muted, #888);
  font-size: 0.85rem;
  line-height: 1.6;
  max-width: 280px;
}

[data-theme="light"] .footer-desc {
  color: var(--text-muted, #666);
}

.footer-links h4 {
  color: var(--text, #f0f0f0);
  font-family: var(--font-display, 'Syne', sans-serif);
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

[data-theme="light"] .footer-links h4 {
  color: var(--text, #111);
}

.footer-links ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer-links a {
  color: var(--text-muted, #888);
  text-decoration: none;
  font-size: 0.85rem;
  transition: color 0.22s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] .footer-links a {
  color: var(--text-muted, #666);
}

.footer-links a:hover {
  color: var(--text, #f0f0f0);
}

[data-theme="light"] .footer-links a:hover {
  color: var(--text, #111);
}

.footer-bottom {
  max-width: 1100px;
  margin: 0 auto;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border, rgba(255,255,255,0.08));
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.8rem;
  color: var(--text-faint, #555);
}

[data-theme="light"] .footer-bottom {
  border-top: 1px solid var(--border, rgba(0,0,0,0.08));
  color: var(--text-faint, #aaa);
}

.back-to-top {
  position: absolute;
  bottom: 1.5rem;
  left: 2rem;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: #6366f1;
  color: #fff;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.2rem;
  transition: background 0.2s, transform 0.2s;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.back-to-top:hover {
  background: #4f46e5;
  transform: translateY(-2px);
}

@media (max-width: 900px) {
  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
  }
}

@media (max-width: 600px) {
  .footer-top {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .footer-brand .logo {
    justify-content: center;
  }
  .footer-desc {
    margin: 0 auto;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
    padding-bottom: 1.5rem;
  }
  .back-to-top {
    display: none;
  }
}