:root {
  --loader-primary: #2563eb;
  --loader-secondary: #3b82f6;
  --loader-tertiary: #93c5fd;
  --loader-bg: #fff;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--loader-bg);
}

.loading-container {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  width: 100vw;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 9999;
  background-color: var(--loader-bg);
  transition: opacity 0.5s ease-out;
}

.loading-container.fade-out {
  opacity: 0;
  pointer-events: none;
}

.spinner {
  position: relative;
  width: 80px;
  height: 80px;
}

.spinner .ring {
  position: absolute;
  border-radius: 50%;
  border: 3px solid transparent;
  animation: spin 1.5s linear infinite;
}

.spinner .ring:nth-child(1) {
  width: 80px;
  height: 80px;
  border-top-color: var(--loader-primary);
  animation-duration: 1.5s;
}

.spinner .ring:nth-child(2) {
  width: 60px;
  height: 60px;
  top: 10px;
  left: 10px;
  border-top-color: var(--loader-secondary);
  animation-duration: 2s;
  animation-direction: reverse;
}

.spinner .ring:nth-child(3) {
  width: 40px;
  height: 40px;
  top: 20px;
  left: 20px;
  border-top-color: var(--loader-tertiary);
  animation-duration: 1s;
}

.spinner .dot {
  position: absolute;
  width: 10px;
  height: 10px;
  top: 35px;
  left: 35px;
  background-color: var(--loader-primary);
  border-radius: 50%;
  animation: pulse 1s ease-in-out infinite;
}

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

@keyframes pulse {
  0%, 100% { transform: scale(0.8); opacity: 0.5; }
  50% { transform: scale(1.2); opacity: 1; }
}