body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #74ebd5 0%, #ACB6E5 100%);
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.card {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  border-radius: 16px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
  max-width: 420px;
  width: 90%;
}

.card h2 {
  margin-bottom: 10px;
  color: #222;
}

.secure-badge {
  font-size: 14px;
  color: #28a745;
  font-weight: bold;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.secure-badge span {
  margin-left: 6px;
}

.qr img {
  max-width: 250px;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  margin-bottom: 20px;
  cursor: pointer;
  transition: transform 0.3s;
}

.qr img:hover {
  transform: scale(1.05);
}

.info {
  font-size: 16px;
  color: #444;
  margin-bottom: 25px;
}

.btn {
  display: inline-block;
  padding: 14px 24px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: bold;
  font-size: 16px;
  transition: all 0.3s;
  margin: 6px;
}

.whatsapp-btn {
  background: #25D366;
  color: #fff;
  box-shadow: 0 4px 10px rgba(37,211,102,0.3);
}

.whatsapp-btn:hover {
  background: #1ebd5a;
  box-shadow: 0 6px 14px rgba(37,211,102,0.5);
  transform: translateY(-2px);
}

.home-btn {
  background: #007bff;
  color: #fff;
  box-shadow: 0 4px 10px rgba(0,123,255,0.3);
}

.home-btn:hover {
  background: #0069d9;
  box-shadow: 0 6px 14px rgba(0,123,255,0.5);
  transform: translateY(-2px);
}

.footer-note {
  margin-top: 20px;
  font-size: 12px;
  color: #777;
}