body {
  margin: 0;
  padding: 0;
  font-family: 'Roboto', sans-serif;
  background: linear-gradient(135deg, #0d1a2b, #1a2f46);
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.container {
  text-align: center;
  padding: 20px;
}

.card {
  background: #ffffff10;
  backdrop-filter: blur(10px);
  border-radius: 20px;
  padding: 40px;
  max-width: 400px;
  margin: auto;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
  color: #fff;
}

.logo {
  width: 100px;
  height: 100px;
  object-fit: contain;
  margin: 10px;
}

.logo.facebook {
  border-radius: 50%;
  background: #fff;
  padding: 8px;
}

h1 {
  font-size: 28px;
  margin-bottom: 10px;
}

p {
  font-size: 16px;
  margin-top: 10px;
}

.spinner {
  margin: 20px auto;
  width: 40px;
  height: 40px;
  border: 4px solid #ffffff40;
  border-top: 4px solid #00ffd5;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

.footer {
  font-size: 14px;
  margin-top: 20px;
  color: #ccc;
}

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