.scrollup {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: #377dff;
  color: #fff;
  border-radius: 50%;
  cursor: pointer;
  transition: background 0.3s;
}

.scrollup:hover,
.scrollup:active,
.scrollup:focus {
  background: #255bcc;
  color: #fefefe;
}

.fade {
  animation: fadeInOut 2s infinite;
}

@keyframes fadeInOut {
  0%,
  100% {
    opacity: 0.5;
  }
  50% {
    opacity: 1;
  }
}

.swing {
  display: inline-block;
  transform-origin: center;
  animation: swingAnim 2s ease-in-out infinite;
}

@keyframes swingAnim {
  0% {
    transform: rotate(0deg);
  }
  25% {
    transform: rotate(5deg);
  }
  50% {
    transform: rotate(0deg);
  }
  75% {
    transform: rotate(-5deg);
  }
  100% {
    transform: rotate(0deg);
  }
}

.map-overlay {
  background-color: rgba(0, 70, 255, 0.3);
  mix-blend-mode: multiply;
  pointer-events: none;
}