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

body {
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
}

/* MAIN SECTION */
.section {
  background: #ffffff;
  max-width: 600px;
  width: 100%;
  padding: 25px;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.15);
  text-align: center;
}

/* HEADINGS */
.section h2 {
  font-size: 1.6rem;
  margin-bottom: 10px;
}

.section p {
  font-size: 1rem;
  line-height: 1.6;
  margin-bottom: 15px;
}

/* PAYMENT BOX */
.payment-box {
  border: 1px solid #ddd;
  padding: 18px;
  margin-bottom: 20px;
  border-radius: 10px;
  background: #f9f9f9;
}

.payment-box h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
}

/* NOTE */
.note {
  font-size: 0.95rem;
  color: #333;
  margin-top: 10px;
}

/* BUTTONS */
.btn-primary {
  display: inline-block;
  background: #ff9800;
  color: white;
  padding: 14px 22px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  font-size: 1rem;
  transition: 0.3s;
}

.btn-primary:hover {
  background: #e68900;
}

/* WHATSAPP BUTTON */
.whatsapp-box {
  margin-top: 20px;
}

.btn-whatsapp {
  display: block;
  background: #25D366;
  color: white;
  padding: 15px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: bold;
  font-size: 1.05rem;
}

/* 📱 MOBILE OPTIMIZATION */
@media (max-width: 480px) {
  .section {
    padding: 18px;
  }

  .section h2 {
    font-size: 1.4rem;
  }

  .payment-box h3 {
    font-size: 1.1rem;
  }

  .btn-primary,
  .btn-whatsapp {
    font-size: 0.95rem;
    padding: 13px;
  }
}