🚀 Blogger bKash Payment Integration

<!-- Single Product Payment Example -->
<div style="background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%); padding: 30px; border-radius: 12px; text-align: center; max-width: 400px; margin: 20px auto;">
  
  <div style="background: white; padding: 25px; border-radius: 12px; box-shadow: 0 2px 6px rgba(0,0,0,0.08);">
    <h3 style="color: #2c3e50; margin-bottom: 10px;">Premium eBook</h3>
    <p id="price1" data-price="500" style="font-size: 28px; color: #e2136e; font-weight: bold; margin: 15px 0;">৳500</p>
    <button id="pay-btn-1" style="background: linear-gradient(135deg, #e2136e 0%, #c5115d 100%); color: white; border: none; padding: 14px 30px; border-radius: 8px; font-size: 16px; font-weight: 600; cursor: pointer; width: 100%;">
      Pay with bKash
    </button>
  </div>
  
</div>

<script>
(function() {
  const btn = document.getElementById('pay-btn-1');
  const priceEl = document.getElementById('price1');
  
  btn.addEventListener('click', function() {
    const amount = priceEl.dataset.price;
    const merchant = 'YOUR_MERCHANT_NUMBER'; // ⚠️ Replace with your merchant number
    const invoice = 'INV-' + Date.now();
    
    // ⚠️ Replace with your GitHub Pages URL
    const popupUrl = 'https://yourusername.github.io/bkash-blogger-payment/popup.html?amount=' + amount + '&merchant=' + merchant + '&invoice=' + invoice;
    
    window.open(popupUrl, 'bkashPayment', 'width=450,height=700,scrollbars=yes');
  });
})();
</script>

<!-- Multiple Products Example -->
<div style="max-width: 800px; margin: 0 auto;">
  
  <!-- Product 1 -->
  <div style="background: white; padding: 20px; margin: 15px 0; border-radius: 8px; display: flex; justify-content: space-between; align-items: center;">
    <div>
      <h4 style="color: #2c3e50; margin-bottom: 5px;">Basic Plan</h4>
      <p style="color: #e2136e; font-size: 20px; font-weight: bold;">৳300</p>
    </div>
    <button class="pay-btn" data-price="300" data-product="Basic Plan">Buy Now</button>
  </div>
  
  <!-- Product 2 -->
  <div style="background: white; padding: 20px; margin: 15px 0; border-radius: 8px; display: flex; justify-content: space-between; align-items: center;">
    <div>
      <h4 style="color: #2c3e50; margin-bottom: 5px;">Premium Plan</h4>
      <p style="color: #e2136e; font-size: 20px; font-weight: bold;">৳800</p>
    </div>
    <button class="pay-btn" data-price="800" data-product="Premium Plan">Buy Now</button>
  </div>
  
  <!-- Product 3 -->
  <div style="background: white; padding: 20px; margin: 15px 0; border-radius: 8px; display: flex; justify-content: space-between; align-items: center;">
    <div>
      <h4 style="color: #2c3e50; margin-bottom: 5px;">Ultimate Plan</h4>
      <p style="color: #e2136e; font-size: 20px; font-weight: bold;">৳1500</p>
    </div>
    <button class="pay-btn" data-price="1500" data-product="Ultimate Plan">Buy Now</button>
  </div>
  
</div>

<style>
.pay-btn {
  background: linear-gradient(135deg, #e2136e 0%, #c5115d 100%);
  color: white;
  border: none;
  padding: 10px 24px;
  border-radius: 6px;
  font-weight: 600;
  cursor: pointer;
}
</style>

<script>
document.querySelectorAll('.pay-btn').forEach(btn => {
  btn.addEventListener('click', function() {
    const amount = this.dataset.price;
    const product = this.dataset.product;
    const merchant = 'YOUR_MERCHANT_NUMBER'; // ⚠️ Replace
    const invoice = product.replace(/\s+/g, '-') + '-' + Date.now();
    
    const popupUrl = 'https://yourusername.github.io/bkash-blogger-payment/popup.html?amount=' + amount + '&merchant=' + merchant + '&invoice=' + invoice;
    
    window.open(popupUrl, 'bkashPayment', 'width=450,height=700');
  });
});
</script>

<!-- Custom Amount Example -->
<div style="background: #f8f9fa; padding: 30px; border-radius: 12px; max-width: 400px; margin: 20px auto; text-align: center;">
  
  <h3 style="color: #2c3e50; margin-bottom: 20px;">Enter Your Amount</h3>
  
  <input 
    type="number" 
    id="custom-amt" 
    placeholder="Enter amount (min 10)" 
    min="10"
    style="width: 100%; padding: 12px; border: 2px solid #dee2e6; border-radius: 8px; font-size: 16px; margin-bottom: 20px; text-align: center;"
  />
  
  <button id="pay-custom" style="background: linear-gradient(135deg, #e2136e 0%, #c5115d 100%); color: white; border: none; padding: 14px 30px; border-radius: 8px; font-size: 16px; font-weight: 600; cursor: pointer; width: 100%;">
    Pay with bKash
  </button>
  
</div>

<script>
document.getElementById('pay-custom').addEventListener('click', function() {
  const amount = document.getElementById('custom-amt').value;
  
  if (!amount || amount < 10) {
    alert('Please enter an amount (minimum 10 BDT)');
    return;
  }
  
  const merchant = 'YOUR_MERCHANT_NUMBER'; // ⚠️ Replace
  const invoice = 'CUSTOM-' + Date.now();
  
  const popupUrl = 'https://yourusername.github.io/bkash-blogger-payment/popup.html?amount=' + amount + '&merchant=' + merchant + '&invoice=' + invoice;
  
  window.open(popupUrl, 'bkashPayment', 'width=450,height=700');
});
</script>