/* Modern Professional Footer */

.site-footer {
  background: var(--color-dark, #1e293b);
  color: rgba(255, 255, 255, 0.85);
  padding: 3.5rem 2rem 1.5rem;
  margin-top: 5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-container {
  max-width: 1280px;
  margin: 0 auto;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand h3 {
  margin: 0;
  color: #ffffff;
  font-size: clamp(1.25rem, 2vw, 1.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.footer-logo {
  height: 36px;
  width: auto;
  filter: brightness(0) invert(1);
  transition: transform 0.2s ease;
}

.footer-logo:hover {
  transform: scale(1.05);
}

.footer-social {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.social-link:hover {
  background: var(--color-primary, #2563eb);
  color: #ffffff;
  transform: translateY(-3px);
  border-color: var(--color-primary, #2563eb);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.social-link:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.6);
  outline-offset: 3px;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem 2.5rem;
  justify-content: center;
}

.footer-link {
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9375rem;
  transition: color 0.2s ease;
  position: relative;
}

.footer-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary, #2563eb);
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.footer-link:hover {
  color: #ffffff;
}

.footer-link:hover::after {
  width: 100%;
}

.footer-link:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.6);
  outline-offset: 3px;
  border-radius: 2px;
}

.footer-bottom {
  padding-top: 2rem;
  text-align: center;
}

.footer-copyright {
  margin: 0;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.875rem;
  letter-spacing: 0.01em;
}

/* Responsive Design */
@media (max-width: 768px) {
  .site-footer {
    padding: 2.5rem 1.5rem 1.25rem;
    margin-top: 4rem;
  }

  .footer-content {
    gap: 2rem;
    padding-bottom: 2rem;
  }

  .footer-nav {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  .footer-link::after {
    left: 50%;
    transform: translateX(-50%);
  }

  .footer-social {
    gap: 1rem;
  }

  .social-link {
    width: 48px;
    height: 48px;
  }

  .footer-bottom {
    padding-top: 1.5rem;
  }
}

@media (max-width: 480px) {
  .site-footer {
    padding: 2rem 1rem 1rem;
  }

  .footer-nav {
    gap: 0.875rem;
  }

  .social-link {
    width: 44px;
    height: 44px;
  }
}

/* Accessibility: Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  .footer-logo,
  .social-link,
  .footer-link,
  .footer-link::after {
    transition: none;
  }

  .social-link:hover {
    transform: none;
  }
}

/* High contrast mode */
@media (prefers-contrast: high) {
  .site-footer {
    border-top: 2px solid currentColor;
  }

  .footer-content {
    border-bottom: 2px solid rgba(255, 255, 255, 0.3);
  }

  .social-link {
    border: 2px solid currentColor;
  }
}