 
    /* your existing CSS styles from the template */
    body {
      font-family: Arial, sans-serif;
      background-color: #f5f5f5;
      padding: 20px;
      margin: 0;
    }
    .checkout-container {
      max-width: 700px;
      margin: auto;
      background: #fff;
      padding: 30px;
      border-radius: 10px;
      box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    }
    h2 {
      text-align: center;
      margin-bottom: 30px;
    }
    .section-title {
      font-weight: bold;
      margin-top: 20px;
    }
    .billing-address {
      background-color: #f0f6ff;
      border: 1px solid #ddd;
      padding: 15px;
      border-radius: 5px;
      margin-top: 10px;
    }
    .promo-section {
      margin-top: 25px;
      display: flex;
      align-items: center;
    }
    .promo-section input {
      flex: 1;
      padding: 8px;
      border: 1px solid #ccc;
      border-radius: 4px;
    }
    .promo-section button {
      margin-left: 10px;
      background-color: #ff007f;
      color: white;
      border: none;
      padding: 8px 16px;
      border-radius: 5px;
      cursor: pointer;
    }
    .payment-methods {
      background-color: #f0fff0;
      border: 1px solid #ddd;
      padding: 15px;
      border-radius: 5px;
      margin-top: 10px;
    }
    .payment-methods label {
      display: block;
      margin: 8px 0;
    }
    .actions {
      display: flex;
      justify-content: space-between;
      margin-top: 30px;
    }
    .actions button {
      padding: 12px 30px;
      font-size: 16px;
      border-radius: 6px;
      border: none;
      cursor: pointer;
    }
    .go-back {
      background-color: #e53935;
      color: white;
    }
    .go-back:hover {
      background-color: #c62828;
    }
    .place-order {
      background-color: #ccc;
      color: white;
      cursor: not-allowed;
    }
    .place-order.enabled {
      background-color: #4CAF50;
      cursor: pointer;
    }
    .place-order.enabled:hover {
      background-color: #45a049;
    }
    .confirmation-wrapper {
      position: relative;
    }
    .place-order {
      background-color: #ccc;
      color: white;
      cursor: not-allowed;
      pointer-events: none; /* Prevent clicks when disabled */
      opacity: 0.6;
    }

    .place-order.enabled {
      background-color: #4CAF50;
      cursor: pointer;
      pointer-events: auto;
      opacity: 1;
    }

    .place-order.enabled:hover {
      background-color: #45a049;
    }

    .confirmation {
      text-align: center;
      padding: 50px 20px;
    }
    .confirmation .tick {
      font-size: 60px;
      color: #007aff;
    }
    .confirmation h3 {
      margin-top: 20px;
      font-size: 24px;
    }
