/* ============================================
   MODERN FOOTER
   Elegant, minimal, memorable
   ============================================ */

.footer-modern {
  background: var(--color-black);
  color: var(--color-white);
  padding: var(--space-24) var(--gutter) var(--space-8);
  position: relative;
  overflow: hidden;
}

/* Decorative gradient line at top */
.footer-modern::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg,
    var(--color-accent) 0%,
    var(--color-accent-light) 50%,
    var(--color-accent) 100%
  );
}

.footer-modern__inner {
  max-width: var(--container-max);
  margin: 0 auto;
}

/* Top Section with Logo & Tagline */
.footer-modern__top {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  padding-bottom: var(--space-16);
  border-bottom: 1px solid var(--color-gray-800);
  margin-bottom: var(--space-12);
}

.footer-modern__brand {
  max-width: 400px;
}

.footer-modern__logo {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  margin-bottom: var(--space-4);
  letter-spacing: -0.02em;
}

.footer-modern__logo span {
  color: var(--color-accent);
}

.footer-modern__tagline {
  font-size: var(--text-base);
  color: var(--color-gray-400);
  line-height: 1.7;
}

/* Navigation Links */
.footer-modern__nav {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-16);
}

.footer-modern__nav-group h4 {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-gray-500);
  margin-bottom: var(--space-6);
}

.footer-modern__nav-group ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-modern__nav-group li {
  margin-bottom: var(--space-3);
}

.footer-modern__nav-group a {
  font-size: var(--text-base);
  color: var(--color-gray-300);
  transition: color var(--transition-fast);
  position: relative;
}

.footer-modern__nav-group a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-accent);
  transition: width var(--transition-base);
}

.footer-modern__nav-group a:hover {
  color: var(--color-white);
}

.footer-modern__nav-group a:hover::after {
  width: 100%;
}

/* Bottom Section */
.footer-modern__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-modern__copyright {
  font-size: var(--text-sm);
  color: var(--color-gray-500);
}

.footer-modern__copyright a {
  color: var(--color-gray-400);
  transition: color var(--transition-fast);
}

.footer-modern__copyright a:hover {
  color: var(--color-accent);
}

/* Social Links */
.footer-modern__social {
  display: flex;
  gap: var(--space-4);
}

.footer-modern__social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--color-gray-700);
  border-radius: 50%;
  color: var(--color-gray-400);
  transition: all var(--transition-fast);
}

.footer-modern__social a:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-3px);
}

.footer-modern__social svg {
  width: 18px;
  height: 18px;
}

/* Back to Top Button */
.footer-modern__back-top {
  position: absolute;
  right: var(--gutter);
  top: var(--space-8);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-gray-500);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.footer-modern__back-top:hover {
  color: var(--color-accent);
}

.footer-modern__back-top svg {
  width: 24px;
  height: 24px;
  animation: float 2s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}

/* Large decorative text */
.footer-modern__watermark {
  position: absolute;
  bottom: -20px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-display);
  font-size: clamp(6rem, 15vw, 15rem);
  font-weight: 700;
  color: var(--color-gray-900);
  white-space: nowrap;
  pointer-events: none;
  user-select: none;
  opacity: 0.5;
}

/* Responsive */
@media (max-width: 900px) {
  .footer-modern__top {
    grid-template-columns: 1fr;
    gap: var(--space-12);
  }

  .footer-modern__nav {
    justify-content: flex-start;
    flex-wrap: wrap;
    gap: var(--space-8);
  }

  .footer-modern__watermark {
    display: none;
  }
}

@media (max-width: 600px) {
  .footer-modern {
    padding: var(--space-16) var(--gutter) var(--space-6);
  }

  .footer-modern__bottom {
    flex-direction: column;
    text-align: center;
  }

  .footer-modern__back-top {
    position: relative;
    right: auto;
    top: auto;
    margin-top: var(--space-8);
    order: -1;
  }

  .footer-modern__nav {
    flex-direction: column;
    gap: var(--space-8);
  }
}