*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  height: 100%;
  overflow-x: hidden;
}

body {
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  font-family: Arial, sans-serif;
  background:
    radial-gradient(circle at top, rgba(255, 255, 255, 0.12), transparent 38%),
    linear-gradient(135deg, #0f172a 0%, #132238 45%, #1d4f6a 100%);
}

.page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.spinner {
  width: clamp(56px, 8vw, 72px);
  aspect-ratio: 1;
  border-radius: 50%;
  border: 4px solid rgba(255, 255, 255, 0.18);
  border-top-color: rgba(255, 255, 255, 0.95);
  animation: spin 0.9s linear infinite;
  will-change: transform;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@media (max-width: 480px) {
  .page {
    padding: 16px;
  }

  .spinner {
    border-width: 3px;
  }
}