Logo Design for SecureX Marketplace

We are looking for a premium, modern, and professional logo design for our brand, SecureX Marketplace. The logo should represent security, trust, and marketplace/trading concepts. It will be used as a Discord server icon, bot profile picture, and marketplace branding.

Key Requirements:
- Main Concept: Combine a shield/lock with a stylized “X” to symbolize security and trust. Optionally include a subtle marketplace element like a shopping bag/cart if it fits naturally.
- Style: Clean, recognizable at small sizes (e.g., Discord icon), original design (no generic templates).
- Colors:
- Primary: Black/Dark
- Accent: Electric Blue
- Secondary: White/Silver
- Avoid too many colors.
- Typography: Bold and modern "SECUREX" with smaller "MARKETPLACE" underneath if text is included. Text should remain readable at small sizes.

Deliverables:
- High-resolution PNG.
- Transparent-background PNG.
- Square 1:1 version.
- Editable/source file if available.
- Icon-only version (shield + X) without text.

Important Notes: The design should feel trusted, secure, premium, and professional—suitable for an escrow-based marketplace. Keep it simple enough to remain recognizable even when displayed small.