* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, Helvetica, sans-serif;
}

body {
  background: linear-gradient(135deg, #1f2933, #111827);
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}

.container {
  text-align: center;
}

.card {
  background: rgba(255, 255, 255, 0.05);
  padding: 40px;
  border-radius: 16px;
  width: 90%;
  max-width: 420px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.4);
  animation: fadeIn 1.2s ease;
}

h1 {
  font-size: 26px;
  margin-bottom: 15px;
}

p {
  font-size: 16px;
  opacity: 0.9;
}

.loader {
  margin: 30px auto;
  width: 50px;
  height: 50px;
  border: 5px solid rgba(255,255,255,0.3);
  border-top-color: #22c55e;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

.footer {
  display: block;
  margin-top: 20px;
  font-size: 13px;
  opacity: 0.6;
}

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

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(15px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}