**Stop bots. Delight users. One file.**

CaptchaFun Lite is the fastest way to add beautiful, secure CAPTCHA protection to any PHP form. Unlike complex solutions that require databases, admin panels, or third-party API keys, CaptchaFun works out of the box with a single PHP file.

Your users get fun, engaging challenges. Bots get blocked. You get peace of mind.

**Why CaptchaFun Lite?**

Most CAPTCHA solutions are ugly, frustrating, or require complex setups. CaptchaFun changes that with:

- **5 unique challenge types** that keep bots guessing and users engaged
- **5 premium themes** to match any website design
- **Server-side security** that can't be bypassed by disabling JavaScript
- **Zero configuration headaches** — edit one array and you're done

Whether you're building a contact form, login page, registration system, or comment section, CaptchaFun integrates in under 60 seconds.

**CAPTCHA Types:**
- ✅ Math CAPTCHA (configurable difficulty: easy/medium/hard)
- ✅ Emoji CAPTCHA (fun tap-to-select challenges)
- ✅ Color CAPTCHA (select the correct color circle)
- ✅ Slider CAPTCHA (drag to complete)
- ✅ Invisible Honeypot (catches bots silently)
- ✅ Random mode (rotates types automatically)

**Security:**
- ✅ Server-side validation (no client-side secrets)
- ✅ HMAC-signed tokens (tamper-proof)
- ✅ Single-use challenges (no replay attacks)
- ✅ Rate limiting with configurable lockout
- ✅ Minimum submission time (anti-speed-bot)
- ✅ Challenge expiration (auto-cleanup)
- ✅ Honeypot trap for basic bots
- ✅ No personal data stored (GDPR/RGPD compliant)

**Design:**
- ✅ 5 themes: Minimal, Colorful, Dark, Glass, Fun
- ✅ Dark mode support
- ✅ Fully responsive (mobile + desktop)
- ✅ Smooth CSS animations
- ✅ Beautiful hover/focus states
- ✅ Modern rounded design

**Developer Experience:**
- ✅ Single PHP file — no dependencies
- ✅ 3-line integration (require, render, verify)
- ✅ Multiple CAPTCHAs per page
- ✅ AJAX refresh support
- ✅ Custom JavaScript events
- ✅ Works without JavaScript (graceful fallback)
- ✅ PHP 8.1+ compatible
- ✅ No database required
- ✅ No admin panel needed
- ✅ No external API keys
- ✅ Well-documented source code

**Multilingual:**
- ✅ Portuguese (PT)
- ✅ English (EN)
- ✅ Spanish (ES)
- ✅ French (FR)
- ✅ Easy to add more languages

- PHP 8.1 or higher
- PHP Sessions enabled
- Any web server (Apache, Nginx, LiteSpeed, etc.)
- Any shared hosting that supports PHP
- No database required
- No Composer required
- No framework required

Step 1: Upload captchafun.php to your project
Step 2: Open the file and change 'secret_key' to a random string
Step 3: In your form page, the include of the file