Classic Elegant Logo Design Needed

I need a timeless, classic-and-elegant logo that can anchor my brand identity. The mark should feel refined yet still read clearly at small sizes because my first use case is Instagram. If the concept scales well to other platforms later, all the better, but Instagram is the immediate priority.

Please work in vector format so the artwork stays crisp across print and digital applications. Alongside the primary horizontal or stacked lock-up, include a square version optimised for Instagram’s 1080 × 1080 feed.

Deliverables:
• Editable vector files (AI, EPS, PDF)
• High-resolution PNG and JPG exports
• One square 1080 × 1080 render for Instagram

A short rationale explaining colour, typography and icon choices will help me understand how the design supports a classic, elegant feel.