Urgent Stripe Integration Needed ASAP

My WordPress site is entirely custom-coded and does not use WooCommerce, yet I need to start taking payments right away. The task is to connect Stripe so visitors can pay with their credit or debit cards in a single, one-time transaction. I already have a Stripe account and API keys; what’s missing is a clean, secure hook-up that fits the existing codebase without disturbing the current layout or functionality.

You may choose the Stripe PHP SDK or another approach you feel is best for WordPress custom themes—just keep the code SCA-ready, well-commented, and easy for me to maintain. Speed matters: once the integration is in place I’ll test it immediately and, if everything checks out, move to live mode the same day.

Deliverables
• Responsive payment form embedded in the current checkout section
• Server-side charge logic with clear success and error callbacks
• Test mode demonstration, then hand-off instructions for switching to live keys
• Brief documentation on where the new files/functions live in the theme

Acceptance criteria: a card payment flows from form submission through Stripe, showing confirmed success on screen in both test and live environments.

If you can start right away and close this quickly, let’s get it done.