* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: radial-gradient(circle at top, #1b1f36, #090b15);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
}

.card {
  background: rgba(255, 255, 255, 0.04);
  border-radius: 16px;
  padding: 32px 28px;
  width: 90%;
  max-width: 360px;
  text-align: center;
  box-shadow: 0 20px 40px rgba(0,0,0,0.4);
  backdrop-filter: blur(10px);
}

h1 {
  font-size: 20px;
  margin: 16px 0 8px;
}

p {
  font-size: 14px;
  opacity: 0.8;
}

.spinner {
  width: 42px;
  height: 42px;
  border: 4px solid rgba(255,255,255,0.2);
  border-top-color: #6aa9ff;
  border-radius: 50%;
  margin: 0 auto;
  animation: spin 1s linear infinite;
}

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