:root {
  --bg: #fbfbfd;
  --text: #1d1d1f;
  --muted: #6e6e73;
  --hairline: rgba(0, 0, 0, 0.1);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --text: #f5f5f7;
    --muted: #a1a1a6;
    --hairline: rgba(255, 255, 255, 0.14);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  padding: 32px;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, sans-serif;
  font-size: 17px;
  text-align: center;
  -webkit-font-smoothing: antialiased;
}

.icon {
  width: 80px;
  height: 80px;
  border-radius: 19px;
  display: block;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
}

p { margin: 0; color: var(--muted); }

.spinner {
  width: 22px;
  height: 22px;
  border: 2px solid var(--hairline);
  border-top-color: var(--muted);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

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

.fallback {
  color: inherit;
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  padding-bottom: 1px;
}

@media (prefers-reduced-motion: reduce) {
  .spinner { animation: none; }
}