#preloader {
  display: none;
  position: fixed;
  top: 50%;
  left: 50%;
  width: 60px;
  height: 60px;
  transform: translate(-50%, -50%);
  z-index: 9999;
}

.spinner {
  position: relative;
  width: 50px;
  height: 50px;
  margin-bottom: 10px;
  border-radius: 50%;
  background: conic-gradient(
    rgba(230, 184, 0, 0.7) 0deg,
    rgba(0, 51, 160, 0.7) 120deg,
    rgba(206, 17, 38, 0.7) 240deg,
    rgba(230, 184, 0, 0.7) 360deg
  );
  animation: spin 1.5s linear infinite;
  mask: radial-gradient(farthest-side, transparent 75%, black 76%);
  -webkit-mask: radial-gradient(farthest-side, transparent 75%, black 76%);
  transition: opacity 0.4s ease;
}

.center-dot {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 6px;
  height: 6px;
  background-color: rgba(0, 51, 160, 0.7);
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

@keyframes spin {
  0%   { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}