UI/Front-End Designer - 12 Modern Bootstrap HTML Templates (Invoices, Quotes, Estimates)

Job Description
I am seeking a talented UI/UX Designer with strong Front-End skills to design and code 12 modern, professional print templates for my PHP-based ERP system.

The system is built on Bootstrap, so I require the templates to be delivered as clean, production-ready HTML/CSS code that my developer can easily integrate.

The Scope of Work
I need 4 different design variations (ranging from minimalist to corporate/bold) for each of the following:

Quotations (4 designs)

Invoices (4 designs)

Estimations (4 designs) (Total: 12 HTML Templates)

Technical Requirements
Framework: Built using Bootstrap 5 utility classes.

Print Optimization: You must use @media print CSS rules to ensure perfect formatting for A4 Paper. This includes proper margins, avoiding awkward page breaks, and ensuring table headers repeat on multi-page documents.

Clean Code: Minimal custom CSS; rely on Bootstrap where possible.

Dynamic Placeholders: Use clear placeholders (e.g., {{customer_name}}, {{total_amount}}) so my PHP developer can map data immediately.

Design Style
Modern Look: Clean typography (Google Fonts), strategic use of white space, and professional color accents.

Structure: Must handle varying data lengths (long item descriptions, multiple tax lines, etc.).

What I Will Provide
I will provide example formats/samples of my current Invoice and Quote documents. These will serve as your guide for the required data fields (Company Info, Tax IDs, Item Tables, Shipping Terms, etc.). Your job is to take this data and house it in 4 beautiful, distinct visual styles.

Deliverables
12 organized HTML files.

Accompanying CSS (preferably a single file or inline Bootstrap).

Any assets used (SVG icons, Google Font links).

Required Skills
Expertise in HTML5 & CSS3.

Proficiency in Bootstrap 5.

Experience with Print-to-PDF design and CSS @media rules.

Strong UI/UX eye for modern business documents.