1+ ```html
2+ <!DOCTYPE html>
3+ < html lang ="en ">
4+ < head >
5+ < meta charset ="UTF-8 " />
6+ < meta name ="viewport " content ="width=device-width, initial-scale=1.0 "/>
7+ < meta name ="description " content ="DevCore: Software Design Principles Handbook - A comprehensive guide to clean, scalable, and maintainable code for developers at all levels. " />
8+ < title > 🚀 DevCore: Software Design Principles Handbook</ title >
9+
10+ <!-- Tailwind CSS via CDN -->
11+ < script src ="https://cdn.tailwindcss.com "> </ script >
12+
13+ <!-- Custom Styles for Glassmorphism -->
14+ < style >
15+ body {
16+ @apply bg-gradient-to-br from-slate-900 via-purple-900 to-slate-900 text-white;
17+ font-family : 'Inter' , sans-serif;
18+ }
19+ .glass {
20+ @apply bg-white/10 backdrop-blur-lg border border-white/20 rounded-xl shadow-2xl;
21+ }
22+ .card-hover {
23+ @apply transition-all duration-300 hover:scale-105 hover:shadow-purple-500/20 hover:shadow-2xl;
24+ }
25+ .btn-primary {
26+ @apply bg-gradient-to-r from-purple-600 to-blue-500 hover:from-purple-700 hover:to-blue-600 py-3 px-6 rounded-xl font-semibold shadow-lg hover:shadow-xl transition-all duration-300;
27+ }
28+ .badge {
29+ @apply bg-white/20 px-3 py-1 rounded-full text-sm font-medium;
30+ }
31+ </ style >
32+ </ head >
33+ < body class ="min-h-screen flex flex-col ">
34+
35+ <!-- Navbar -->
36+ < nav class ="p-6 flex justify-between items-center ">
37+ < div class ="text-2xl font-bold bg-clip-text text-transparent bg-gradient-to-r from-purple-400 to-pink-600 ">
38+ DevCore
39+ </ div >
40+ < div class ="hidden md:flex space-x-8 ">
41+ < a href ="index.html " class ="hover:text-purple-400 transition "> Home</ a >
42+ < a href ="about.html " class ="hover:text-purple-400 transition "> About</ a >
43+ < a href ="contact.html " class ="hover:text-purple-400 transition "> Contact</ a >
44+ </ div >
45+ < a href ="https://github.com/chirag127/DevCore-Software-Design-Principles-Handbook " target ="_blank " class ="text-white ">
46+ < svg class ="w-6 h-6 " fill ="currentColor " viewBox ="0 0 24 24 ">
47+ < path d ="M12 0c-6.626 0-12 5.373-12 12 0 5.302 3.438 9.8 8.207 11.387.599.111.793-.261.793-.577v-2.234c-3.338.726-4.033-1.416-4.033-1.416-.546-1.387-1.333-1.756-1.333-1.756-1.089-.745.083-.729.083-.729 1.205.084 1.839 1.237 1.839 1.237 1.07 1.834 2.807 1.304 3.492.997.107-.775.418-1.305.762-1.604-2.665-.305-5.467-1.334-5.467-5.931 0-1.311.469-2.381 1.236-3.221-.124-.303-.535-1.524.117-3.176 0 0 1.008-.322 3.301 1.23.957-.266 1.983-.399 3.003-.404 1.02.005 2.047.138 3.006.404 2.291-1.552 3.297-1.23 3.297-1.23.653 1.653.242 2.874.118 3.176.77.84 1.235 1.911 1.235 3.221 0 4.609-2.807 5.624-5.479 5.921.43.372.823 1.102.823 2.222v3.293c0 .319.192.694.801.576 4.765-1.589 8.199-6.086 8.199-11.386 0-6.627-5.373-12-12-12z "/>
48+ </ svg >
49+ </ a >
50+ </ nav >
51+
52+ <!-- Hero Section -->
53+ < header class ="flex-1 flex items-center justify-center p-6 ">
54+ < div class ="text-center max-w-4xl mx-auto ">
55+ < img src ="https://img.shields.io/github/actions/workflow/status/chirag127/DevCore-Software-Design-Principles-Handbook/ci.yml?style=for-the-badge&logo=github&label=BUILD&color=blueviolet " alt ="Build Status " class ="mx-auto mb-6 " />
56+ < h1 class ="text-5xl md:text-7xl font-extrabold mb-6 leading-tight ">
57+ < span class ="bg-clip-text text-transparent bg-gradient-to-r from-purple-400 via-pink-500 to-blue-500 ">
58+ DevCore
59+ </ span >
60+ </ h1 >
61+ < p class ="text-xl md:text-2xl text-gray-300 mb-8 leading-relaxed ">
62+ The definitive handbook on < strong > Software Design Principles</ strong > and < strong > Clean Architecture</ strong > .< br >
63+ Master SOLID, DRY, KISS, and modern patterns for < em > scalable, maintainable</ em > code.
64+ </ p >
65+ < div class ="flex flex-col sm:flex-row justify-center gap-4 mb-10 ">
66+ < a href ="about.html " class ="btn-primary text-white "> Explore Handbook</ a >
67+ < a href ="https://github.com/chirag127/DevCore-Software-Design-Principles-Handbook " target ="_blank " class ="btn-primary bg-white/10 border border-white/30 hover:bg-white/20 text-white ">
68+ View on GitHub
69+ </ a >
70+ </ div >
71+
72+ <!-- Feature Badges -->
73+ < div class ="flex flex-wrap justify-center gap-3 mb-12 ">
74+ < span class ="badge "> SOLID Principles</ span >
75+ < span class ="badge "> Design Patterns</ span >
76+ < span class ="badge "> Clean Code</ span >
77+ < span class ="badge "> Best Practices</ span >
78+ < span class ="badge "> OOP & FP</ span >
79+ < span class ="badge "> Scalability</ span >
80+ </ div >
81+ </ div >
82+ </ header >
83+
84+ <!-- Features Section -->
85+ < section class ="px-6 pb-16 ">
86+ < div class ="max-w-6xl mx-auto grid md:grid-cols-3 gap-10 ">
87+ <!-- Feature 1 -->
88+ < div class ="glass p-8 text-center card-hover ">
89+ < div class ="w-16 h-16 mx-auto mb-5 bg-purple-500 rounded-full flex items-center justify-center text-2xl "> 📚</ div >
90+ < h3 class ="text-2xl font-bold mb-3 "> Comprehensive Guide</ h3 >
91+ < p class ="text-gray-300 "> In-depth coverage of core software design principles with real-world examples and anti-patterns.</ p >
92+ </ div >
93+
94+ <!-- Feature 2 -->
95+ < div class ="glass p-8 text-center card-hover ">
96+ < div class ="w-16 h-16 mx-auto mb-5 bg-blue-500 rounded-full flex items-center justify-center text-2xl "> 🎯</ div >
97+ < h3 class ="text-2xl font-bold mb-3 "> Practical Focus</ h3 >
98+ < p class ="text-gray-300 "> Learn how to apply design principles effectively in backend systems, APIs, and scalable services.</ p >
99+ </ div >
100+
101+ <!-- Feature 3 -->
102+ < div class ="glass p-8 text-center card-hover ">
103+ < div class ="w-16 h-16 mx-auto mb-5 bg-pink-500 rounded-full flex items-center justify-center text-2xl "> 👨💻</ div >
104+ < h3 class ="text-2xl font-bold mb-3 "> For All Levels</ h3 >
105+ < p class ="text-gray-300 "> From juniors to seniors — level up your engineering mindset and code quality.</ p >
106+ </ div >
107+ </ div >
108+ </ section >
109+
110+ <!-- Footer -->
111+ < footer class ="p-6 text-center text-gray-400 text-sm mt-auto ">
112+ < p > Copyright (c) 2026 Chirag Singhal | Designed by Chirag Singhal</ p >
113+ < div class ="flex justify-center space-x-6 mt-3 ">
114+ < a href ="https://github.com/chirag127 " target ="_blank " class ="hover:text-white transition "> GitHub</ a >
115+ < a href ="https://linkedin.com/in/chirag-singhal1 " target ="_blank " class ="hover:text-white transition "> LinkedIn</ a >
116+ < a href ="https://buymeacoffee.com/WhyIsWhen " target ="_blank " class ="hover:text-white transition "> Buy Me a Coffee</ a >
117+ < a href ="mailto:chiragsinghal127@gmail.com " class ="hover:text-white transition "> Email</ a >
118+ </ div >
119+ </ footer >
120+
121+ </ body >
122+ </ html >
123+ ```
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