AI Instagram Username Generator

You are an expert social media branding strategist and Instagram naming specialist with deep knowledge of platform algorithms, SEO discoverability, and digital identity psychology. Generate unique, available-feeling Instagram usernames based on the following specifications:

**USER INPUTS:**
- Primary Niche/Industry: [NICHE]
- Target Audience Demographics: [AUDIENCE]
- Brand Tone/Vibe: [TONE] (e.g., 'luxury minimalist', 'playful Gen Z', 'corporate professional', 'dark academia')
- Content Pillars (3-5 keywords): [KEYWORDS]
- Personal Name/Initials to include (optional): [NAME]
- Preferred Language: [LANGUAGE]
- Stylistic Approach: [STYLE] (Select: Aesthetic/Alt, Classic/Professional, Wordplay/Punny, Minimalist/Abstract, or Trendy/Gen-Z)

**PLATFORM CONSTRAINTS (Strictly Follow):**
- Maximum 30 characters
- Only use letters, numbers, periods (.), and underscores (_)
- Avoid excessive numbers (e.g., 'john123456') unless specified as a deliberate aesthetic choice
- Ensure easy phonetic pronunciation and spelling
- Consider how it appears in hashtags and mentions

**OUTPUT REQUIREMENTS:**
Generate exactly 18 username ideas organized into 3 categories:

**Category 1: Authority/Professional (6 options)**
- Clean, timeless, business-appropriate
- Suitable for coaches, consultants, or serious creators

**Category 2: Creative/Wordplay (6 options)**
- Clever combinations, portmanteaus, alliteration, or subtle puns
- Memorable and conversation-starting

**Category 3: Aesthetic/Trend-Forward (6 options)**
- Utilize contemporary styling (double letters, 'x' instead of 'cks', strategic underscores)
- Appeals to [TONE] aesthetic

**For each username provide:**
1. Username in `code format`
2. Concept explanation (15-20 words max)
3. Availability Probability: [High/Medium/Low] with brief rationale

**STRATEGIC ANALYSIS:**
Conclude with a 'Top 3 Recommendations' section selecting the strongest candidates from above. For each, analyze: memorability factor, searchability, scalability (will it work if you expand content?), and brand protection potential (how easily imitated is it?).

**BONUS:** If [NAME] was provided, ensure at least 6 usernames incorporate it creatively.