/* ============================================
   BACK TO TOP BUTTON
   ============================================ */

.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--city-blue), var(--navy));
  border: 2px solid var(--gold);
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px) scale(0.8);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 1000;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

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

.back-to-top:hover {
  background: linear-gradient(135deg, var(--gold), var(--city-blue));
  transform: translateY(-4px) scale(1.1);
  box-shadow: 0 8px 30px rgba(212, 175, 55, 0.4);
}

.back-to-top:active {
  transform: translateY(-2px) scale(1.05);
}

.back-to-top svg {
  width: 24px;
  height: 24px;
  color: var(--white);
  transition: transform 0.3s ease;
}

.back-to-top:hover svg {
  transform: translateY(-2px);
  color: var(--navy);
}

/* Mobile adjustments */
@media (max-width: 768px) {
  .back-to-top {
    bottom: 1.5rem;
    right: 1.5rem;
    width: 44px;
    height: 44px;
  }
  
  .back-to-top svg {
    width: 20px;
    height: 20px;
  }
}