Rename .gitattributes to app.py

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app.py

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+import gradio as gr
+
+SYSTEM_PROMPT = """You are a professional coding teacher explaining code to a complete beginner.
+
+When given code, respond ONLY in this exact HTML structure (no markdown, no backticks):
+
+<div class="section" id="simple">
+<h2>🧠 Simple Explanation</h2>
+<ul>
+[3-5 bullet points explaining what the code does in simple words]
+</ul>
+</div>
+
+<div class="section" id="steps">
+<h2>👣 Step-by-Step Working</h2>
+<ol>
+[numbered steps of how the code runs]
+</ol>
+</div>
+
+<div class="section" id="variables">
+<h2>📦 Variables & Functions</h2>
+<ul>
+[explain each variable and function simply]
+</ul>
+</div>
+
+<div class="section" id="logic">
+<h2>🔄 Logic (Loops & Conditions)</h2>
+<p>[explain any loops, if/else, conditions in very simple words]</p>
+</div>
+
+<div class="section" id="analogy">
+<h2>🌍 Real-Life Analogy</h2>
+<p>[a simple real-world comparison that a child could understand]</p>
+</div>
+
+<div class="section" id="output">
+<h2>🖥️ Output</h2>
+<div class="output-box">[what the code prints/returns]</div>
+</div>
+
+<div class="section" id="errors">
+<h2>🐛 Errors Found & Fixed</h2>
+<p>[mention any bugs or if code is correct]</p>
+</div>
+
+<div class="section" id="improvements">
+<h2>✨ Suggested Improvements</h2>
+<ul>
+[2-3 improvement tips]
+</ul>
+</div>
+
+<div class="section" id="complexity">
+<h2>⏱️ Time Complexity</h2>
+<p>[explain time complexity in very simple words like "this runs once" or "this loops N times"]</p>
+</div>
+
+<div class="section" id="summary">
+<h2>📝 Short Summary</h2>
+<p>[1-2 sentence summary of what the code does]</p>
+</div>
+
+Use very easy English. No technical jargon. Keep it short but clear."""
+
+CSS = """
+@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;600;700;800&family=DM+Mono:wght@400;500&family=DM+Sans:wght@300;400;500&display=swap');
+
+:root {
+    --bg: #0a0a0f;
+    --surface: #12121a;
+    --surface2: #1a1a26;
+    --border: #2a2a3d;
+    --accent: #7c6aff;
+    --accent2: #ff6a9e;
+    --accent3: #6affb8;
+    --text: #e8e8f0;
+    --text-muted: #8888aa;
+    --glow: 0 0 30px rgba(124, 106, 255, 0.15);
+}
+
+* { box-sizing: border-box; margin: 0; padding: 0; }
+
+body, .gradio-container {
+    background: var(--bg) !important;
+    font-family: 'DM Sans', sans-serif !important;
+    color: var(--text) !important;
+    min-height: 100vh;
+}
+
+.gradio-container {
+    max-width: 1100px !important;
+    margin: 0 auto !important;
+    padding: 2rem !important;
+}
+
+/* Header */
+.header-block {
+    text-align: center;
+    padding: 3rem 0 2rem;
+    position: relative;
+}
+
+.header-block::before {
+    content: '';
+    position: absolute;
+    top: 0; left: 50%;
+    transform: translateX(-50%);
+    width: 300px; height: 300px;
+    background: radial-gradient(circle, rgba(124,106,255,0.12) 0%, transparent 70%);
+    pointer-events: none;
+}
+
+.app-title {
+    font-family: 'Syne', sans-serif !important;
+    font-size: 3rem !important;
+    font-weight: 800 !important;
+    background: linear-gradient(135deg, #7c6aff, #ff6a9e, #6affb8) !important;
+    -webkit-background-clip: text !important;
+    -webkit-text-fill-color: transparent !important;
+    background-clip: text !important;
+    line-height: 1.1 !important;
+    letter-spacing: -1px !important;
+}
+
+.app-subtitle {
+    color: var(--text-muted) !important;
+    font-size: 1.05rem !important;
+    margin-top: 0.6rem !important;
+    font-weight: 300 !important;
+}
+
+/* Input area */
+.code-input textarea {
+    background: var(--surface) !important;
+    border: 1.5px solid var(--border) !important;
+    border-radius: 16px !important;
+    color: var(--text) !important;
+    font-family: 'DM Mono', monospace !important;
+    font-size: 0.9rem !important;
+    padding: 1.2rem !important;
+    transition: border-color 0.2s, box-shadow 0.2s !important;
+    resize: vertical !important;
+}
+
+.code-input textarea:focus {
+    border-color: var(--accent) !important;
+    box-shadow: var(--glow) !important;
+    outline: none !important;
+}
+
+.code-input label {
+    font-family: 'Syne', sans-serif !important;
+    font-weight: 600 !important;
+    color: var(--text) !important;
+    font-size: 0.95rem !important;
+    letter-spacing: 0.5px !important;
+}
+
+/* Button */
+button.primary {
+    background: linear-gradient(135deg, var(--accent), var(--accent2)) !important;
+    border: none !important;
+    border-radius: 12px !important;
+    color: white !important;
+    font-family: 'Syne', sans-serif !important;
+    font-size: 1rem !important;
+    font-weight: 700 !important;
+    padding: 0.85rem 2.5rem !important;
+    cursor: pointer !important;
+    transition: transform 0.15s, box-shadow 0.15s !important;
+    letter-spacing: 0.5px !important;
+}
+
+button.primary:hover {
+    transform: translateY(-2px) !important;
+    box-shadow: 0 8px 25px rgba(124,106,255,0.35) !important;
+}
+
+/* Output HTML */
+.output-html {
+    background: var(--surface) !important;
+    border: 1.5px solid var(--border) !important;
+    border-radius: 16px !important;
+    padding: 1.5rem !important;
+}
+
+/* Section cards rendered inside HTML output */
+.section {
+    background: var(--surface2);
+    border: 1px solid var(--border);
+    border-radius: 14px;
+    padding: 1.4rem 1.6rem;
+    margin-bottom: 1rem;
+    transition: border-color 0.2s;
+}
+
+.section:hover { border-color: var(--accent); }
+
+.section h2 {
+    font-family: 'Syne', sans-serif;
+    font-size: 1rem;
+    font-weight: 700;
+    color: var(--accent);
+    margin-bottom: 0.8rem;
+    letter-spacing: 0.3px;
+}
+
+.section ul, .section ol {
+    padding-left: 1.4rem;
+    color: var(--text);
+    line-height: 1.8;
+    font-size: 0.93rem;
+}
+
+.section p {
+    color: var(--text);
+    line-height: 1.7;
+    font-size: 0.93rem;
+}
+
+.output-box {
+    background: #0d0d15;
+    border: 1px solid var(--border);
+    border-left: 3px solid var(--accent3);
+    border-radius: 8px;
+    padding: 0.8rem 1rem;
+    font-family: 'DM Mono', monospace;
+    font-size: 0.88rem;
+    color: var(--accent3);
+    white-space: pre-wrap;
+}
+
+#analogy h2 { color: var(--accent3) !important; }
+#output h2 { color: var(--accent3) !important; }
+#summary h2 { color: var(--accent2) !important; }
+#errors h2 { color: #ff9966 !important; }
+
+/* Loading */
+.generating {
+    text-align: center;
+    color: var(--text-muted);
+    padding: 2rem;
+    font-family: 'Syne', sans-serif;
+}
+
+/* Footer */
+footer { display: none !important; }
+"""
+
+PLACEHOLDER = '''# Paste your code here! Example:
+
+def greet(name):
+    for i in range(3):
+        print("Hello, " + name + "!")
+
+greet("Alice")'''
+
+def explain_code(code):
+    if not code.strip():
+        return "<p style='color:#8888aa; padding:1rem;'>⚠️ Please paste some code first!</p>"
+    
+    try:
+        import anthropic
+        client = anthropic.Anthropic()
+        
+        message = client.messages.create(
+            model="claude-sonnet-4-20250514",
+            max_tokens=2000,
+            system=SYSTEM_PROMPT,
+            messages=[{"role": "user", "content": f"Explain this code:\n\n{code}"}]
+        )
+        
+        result = message.content[0].text
+        
+        # Wrap in styled container
+        return f"""
+        <style>
+        :root {{
+            --bg:#0a0a0f;--surface:#12121a;--surface2:#1a1a26;
+            --border:#2a2a3d;--accent:#7c6aff;--accent2:#ff6a9e;
+            --accent3:#6affb8;--text:#e8e8f0;--text-muted:#8888aa;
+        }}
+        @import url('https://fonts.googleapis.com/css2?family=Syne:wght@700&family=DM+Mono&family=DM+Sans:wght@300;400&display=swap');
+        .section{{background:var(--surface2);border:1px solid var(--border);border-radius:14px;padding:1.4rem 1.6rem;margin-bottom:1rem;}}
+        .section:hover{{border-color:var(--accent);}}
+        .section h2{{font-family:'Syne',sans-serif;font-size:1rem;font-weight:700;color:var(--accent);margin-bottom:0.8rem;}}
+        .section ul,.section ol{{padding-left:1.4rem;color:var(--text);line-height:1.8;font-size:0.93rem;}}
+        .section p{{color:var(--text);line-height:1.7;font-size:0.93rem;}}
+        .output-box{{background:#0d0d15;border:1px solid var(--border);border-left:3px solid var(--accent3);border-radius:8px;padding:0.8rem 1rem;font-family:'DM Mono',monospace;font-size:0.88rem;color:var(--accent3);white-space:pre-wrap;}}
+        #analogy h2,#output h2{{color:var(--accent3)!important;}}
+        #summary h2{{color:var(--accent2)!important;}}
+        #errors h2{{color:#ff9966!important;}}
+        </style>
+        {result}
+        """
+    except Exception as e:
+        return f"<p style='color:#ff6a6a;padding:1rem;'>❌ Error: {str(e)}</p>"
+
+
+with gr.Blocks(css=CSS, title="CodeLens — AI Code Explainer") as demo:
+    
+    gr.HTML("""
+    <div class="header-block">
+        <h1 class="app-title">CodeLens</h1>
+        <p class="app-subtitle">Paste any code → Get a beginner-friendly explanation instantly ✨</p>
+    </div>
+    """)
+    
+    with gr.Row():
+        with gr.Column(scale=1):
+            code_input = gr.Code(
+                label="📋 Paste Your Code Here",
+                language="python",
+                lines=14,
+                elem_classes=["code-input"],
+                placeholder=PLACEHOLDER
+            )
+            
+            explain_btn = gr.Button(
+                "🔍 Explain This Code",
+                variant="primary",
+                size="lg"
+            )
+    
+    output = gr.HTML(
+        label="",
+        elem_classes=["output-html"]
+    )
+    
+    explain_btn.click(
+        fn=explain_code,
+        inputs=[code_input],
+        outputs=[output]
+    )
+    
+    gr.HTML("""
+    <div style="text-align:center; padding:1.5rem 0 0.5rem; color:#8888aa; font-size:0.82rem; font-family:'DM Sans',sans-serif;">
+        Built with ❤️ using Claude AI · CodeLens for Beginners
+    </div>
+    """)
+
+if __name__ == "__main__":
+    demo.launch()