.site-footer {
  background: var(--color-bg-secondary);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding: var(--space-3xl) 0 var(--space-lg);
  position: relative;
  overflow: hidden;
  margin-top: var(--space-3xl);
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--gradient-hero);
  opacity: 0.5;
}

.site-footer::after {
  content: '';
  position: absolute;
  bottom: -50%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(
    circle,
    rgba(0, 230, 118, 0.05) 0%,
    transparent 70%
  );
  pointer-events: none;
  filter: blur(60px);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
  position: relative;
  z-index: 1;
}

.footer-grid > div {
  position: relative;
}

.footer-grid h4 {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-md);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  position: relative;
  display: inline-block;
}

.footer-grid h4::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 40px;
  height: 2px;
  background: var(--gradient-hero);
}

.footer-grid ul {
  list-style: none;
}

.footer-grid li {
  margin-bottom: var(--space-sm);
}

.footer-grid a {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  position: relative;
  padding-left: 0;
}

.footer-grid a::before {
  content: '';
  width: 0;
  height: 2px;
  background: var(--color-accent-primary);
  position: absolute;
  bottom: -2px;
  left: 0;
  transition: width var(--transition-base);
}

.footer-grid a:hover {
  color: var(--color-accent-primary);
  padding-left: var(--space-xs);
}

.footer-grid a:hover::before {
  width: 30px;
}

.footer-grid .muted {
  color: var(--color-text-tertiary);
  font-size: 0.9rem;
  line-height: 1.6;
}

.footer-grid a[href^="mailto"],
.footer-grid a[href^="tel"] {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--color-accent-primary);
}

.footer-grid a[href^="mailto"]:hover,
.footer-grid a[href^="tel"]:hover {
  text-decoration: underline;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 0.9rem;
  color: var(--color-text-tertiary);
  position: relative;
  z-index: 1;
}

.footer-bottom > div:first-child {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.footer-social {
  display: flex;
  gap: var(--space-md);
}

.social-link {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  color: var(--color-text-secondary);
  transition: all var(--transition-base);
  font-size: 1.125rem;
}

.social-link:hover {
  background: var(--color-accent-primary);
  border-color: var(--color-accent-primary);
  color: var(--color-bg-primary);
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(0, 230, 118, 0.15);
}

.back-to-top {
  position: fixed;
  bottom: var(--space-xl);
  right: var(--space-xl);
  width: 50px;
  height: 50px;
  background: var(--color-bg-glass);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent-primary);
  font-size: 1.25rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-base);
  z-index: var(--z-sticky);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--color-accent-primary);
  color: var(--color-bg-primary);
  border-color: var(--color-accent-primary);
  box-shadow: 0 8px 20px rgba(0, 230, 118, 0.2);
  transform: translateY(-4px);
}

.newsletter-form {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.newsletter-input {
  flex: 1;
  padding: 0.875rem 1.25rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  color: var(--color-text-primary);
  font-size: 0.95rem;
  transition: all var(--transition-base);
}

.newsletter-input:focus {
  outline: none;
  border-color: var(--color-accent-primary);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 0 20px rgba(0, 230, 118, 0.12);
}

.newsletter-input::placeholder {
  color: var(--color-text-tertiary);
}

.newsletter-submit {
  padding: 0.875rem 1.75rem;
  background: var(--color-accent-primary);
  color: var(--color-bg-primary);
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: all var(--transition-base);
}

.newsletter-submit:hover {
  background: var(--color-accent-secondary);
  box-shadow: 0 8px 20px rgba(0, 230, 118, 0.15);
  transform: translateY(-2px);
}

@media (max-width: 768px) {
  .site-footer {
    padding: var(--space-xl) 0 var(--space-md);
    margin-top: var(--space-xl);
  }
  
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg) var(--space-md);
    margin-bottom: var(--space-lg);
  }
  
  .footer-grid > div:last-child {
    grid-column: 1 / -1;
  }
  
  .footer-grid h4 {
    font-size: 1rem;
    margin-bottom: var(--space-sm);
  }
  
  .footer-grid h4::after {
    width: 30px;
    bottom: -6px;
  }
  
  .footer-grid li {
    margin-bottom: var(--space-xs);
  }
  
  .footer-grid a,
  .footer-grid .muted {
    font-size: 0.85rem;
  }
  
  .footer-grid a[href^="mailto"],
  .footer-grid a[href^="tel"] {
    font-size: 0.85rem;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: var(--space-sm);
    text-align: center;
    padding-top: var(--space-md);
    font-size: 0.8rem;
  }
  
  .back-to-top {
    bottom: var(--space-md);
    right: var(--space-md);
    width: 45px;
    height: 45px;
  }
  
  .newsletter-form {
    flex-direction: column;
  }
  
  .newsletter-submit {
    width: 100%;
  }
  
  .newsletter-input {
    padding: 0.75rem 1rem;
    font-size: 0.9rem;
  }
  
  .newsletter-submit {
    padding: 0.75rem 1.5rem;
    font-size: 0.85rem;
  }
}

@media (max-width: 480px) {
  .site-footer {
    padding: var(--space-lg) 0 var(--space-sm);
  }
  
  .footer-grid {
    gap: var(--space-md) var(--space-sm);
  }
  
  .footer-grid h4 {
    font-size: 0.95rem;
  }
  
  .footer-grid a,
  .footer-grid .muted {
    font-size: 0.8rem;
  }
  
  .footer-grid a[href^="mailto"],
  .footer-grid a[href^="tel"] {
    font-size: 0.8rem;
  }
  
  .footer-bottom {
    font-size: 0.75rem;
  }
}

[dir="rtl"] .footer-grid a::before {
  left: auto;
  right: 0;
}

[dir="rtl"] .footer-grid a:hover {
  padding-left: 0;
  padding-right: var(--space-xs);
}

[dir="rtl"] .footer-grid h4::after {
  left: auto;
  right: 0;
}