WHMCS Client Area UI/UX Customization to Match Existing WordPress Brand Design

** NOTE: WE DO NOT NEED RANDOM DESIGNERS, THIS WORK IS FOR WHMCS (WHMCS.COM) BILLING PROVIDER ADMIN (CLIENT SIDE) CUSTOMIZATION FROM STOCK UI ** My WordPress site already has a well-defined visual identity; I will supply the exact palette, typography choices, and spacing rules... (Budget: ₹1500 - ₹12500 INR, Jobs: Branding, CSS, HTML, JavaScript, PHP, WHMCS, WordPress)