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Study_RAG
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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Study RAG Assistant</title>
    <style>
        :root {
            --primary: #2563EB;
            --primary-hover: #1D4ED8;
            --bg-body: #F3F4F6;
            --bg-white: #FFFFFF;
            --text-main: #1F2937;
            --text-muted: #6B7280;
            --border: #E5E7EB;
            --success: #10B981;
            --warning: #F59E0B;
            --error: #EF4444;
            --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
            --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
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        * { box-sizing: border-box; }
        body { margin: 0; font-family: var(--font-main); background: var(--bg-body); color: var(--text-main); height: 100vh; display: flex; flex-direction: column; overflow: hidden; }

        /* --- Header --- */
        header {
            height: 60px; background: var(--bg-white); border-bottom: 1px solid var(--border);
            display: flex; align-items: center; justify-content: space-between; padding: 0 20px;
            box-shadow: 0 1px 2px rgba(0,0,0,0.05); z-index: 10;
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        .brand { font-weight: 700; font-size: 18px; color: var(--primary); display: flex; align-items: center; gap: 8px; }
        .header-controls { display: flex; gap: 20px; align-items: center; }
        .control-group { display: flex; align-items: center; gap: 8px; font-size: 13px; }
        select, input[type="number"] {
            padding: 4px 8px; border: 1px solid var(--border); border-radius: 4px; font-size: 13px; background: var(--bg-white);
        }
        .stats-pill {
            background: #EEF2FF; color: var(--primary); padding: 4px 12px; border-radius: 99px; font-size: 12px; font-weight: 600;
        }

        /* --- Layout --- */
        .app-container { display: flex; flex: 1; overflow: hidden; }

        /* --- Sidebar --- */
        aside {
            width: 280px; background: var(--bg-white); border-right: 1px solid var(--border);
            display: flex; flex-direction: column;
        }
        .upload-zone {
            margin: 15px; padding: 20px; border: 2px dashed var(--border); border-radius: 8px;
            text-align: center; color: var(--text-muted); font-size: 13px; cursor: pointer; transition: 0.2s;
        }
        .upload-zone:hover { border-color: var(--primary); background: #F9FAFB; }
        
        .file-list { flex: 1; overflow-y: auto; padding: 0 15px; }
        .file-item {
            display: flex; align-items: center; padding: 10px; border-radius: 6px; margin-bottom: 4px;
            border: 1px solid transparent; cursor: pointer;
        }
        .file-item:hover { background: #F9FAFB; }
        .file-icon { width: 32px; height: 32px; background: #EFF6FF; color: var(--primary); border-radius: 4px; display: flex; align-items: center; justify-content: center; margin-right: 10px; flex-shrink: 0; }
        .file-info { flex: 1; min-width: 0; }
        .file-name { font-size: 13px; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
        .file-meta { display: flex; align-items: center; gap: 6px; margin-top: 2px; }
        .status-badge { font-size: 10px; padding: 2px 6px; border-radius: 4px; font-weight: 600; }
        .status-ready { background: #D1FAE5; color: #065F46; }
        .status-indexing { background: #DBEAFE; color: #1E40AF; }
        .status-error { background: #FEE2E2; color: #991B1B; }
        
        .file-actions { opacity: 0; transition: 0.2s; }
        .file-item:hover .file-actions { opacity: 1; }
        .btn-icon { background: none; border: none; cursor: pointer; color: var(--text-muted); padding: 2px; }
        .btn-icon:hover { color: var(--text-main); }

        .sidebar-footer { padding: 15px; border-top: 1px solid var(--border); }
        .toggle-row { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; font-size: 13px; }
        .btn-glossary { width: 100%; padding: 8px; background: var(--bg-body); border: 1px solid var(--border); border-radius: 6px; text-align: left; font-size: 13px; display: flex; justify-content: space-between; cursor: pointer; }

        /* --- Main Content --- */
        main { flex: 1; display: flex; flex-direction: column; background: #fff; position: relative; }
        
        /* Tabs */
        .tabs { display: flex; border-bottom: 1px solid var(--border); background: var(--bg-white); padding: 0 20px; }
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            padding: 15px 20px; background: none; border: none; border-bottom: 2px solid transparent; font-size: 14px; font-weight: 500; color: var(--text-muted); cursor: pointer;
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        .tab-btn:hover { color: var(--text-main); }

        /* Tab Content */
        .tab-content { display: none; flex: 1; overflow: hidden; flex-direction: column; }
        .tab-content.active { display: flex; }

        /* --- Chat UI --- */
        .chat-area { flex: 1; padding: 20px; overflow-y: auto; background: #FAFAFA; display: flex; flex-direction: column; gap: 20px; }
        .message { max-width: 80%; display: flex; flex-direction: column; gap: 6px; }
        .message.user { align-self: flex-end; align-items: flex-end; }
        .message.ai { align-self: flex-start; align-items: flex-start; }
        
        .bubble {
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        .user .bubble { background: var(--primary); color: white; border-bottom-right-radius: 2px; }
        .ai .bubble { background: white; border: 1px solid var(--border); border-bottom-left-radius: 2px; }
        
        .input-area {
            padding: 20px; background: white; border-top: 1px solid var(--border);
        }
        .quick-actions { display: flex; gap: 8px; margin-bottom: 10px; overflow-x: auto; padding-bottom: 5px; }
        .pill { padding: 4px 12px; background: #EFF6FF; color: var(--primary); border-radius: 99px; font-size: 12px; border: 1px solid #BFDBFE; cursor: pointer; white-space: nowrap; }
        .pill:hover { background: #DBEAFE; }
        
        .chat-input-wrapper { display: flex; gap: 10px; }
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        .btn-primary { background: var(--primary); color: white; border: none; padding: 0 20px; border-radius: 8px; font-weight: 600; cursor: pointer; }
        .btn-primary:hover { background: var(--primary-hover); }

        .chat-controls { display: flex; justify-content: space-between; align-items: center; margin-top: 8px; }
        .toggle-label { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--text-muted); cursor: pointer; }

        .citation-group { margin-top: 8px; width: 100%; border-top: 1px solid #f0f0f0; padding-top: 8px; }
        .citation-trigger { font-size: 11px; color: var(--text-muted); cursor: pointer; display: flex; align-items: center; gap: 4px; }
        .citation-trigger:hover { text-decoration: underline; color: var(--primary); }
        
        .citation-details { background: #F8FAFC; border: 1px solid #E2E8F0; padding: 8px; border-radius: 6px; font-size: 12px; margin-top: 4px; font-family: var(--font-mono); color: #334155; display: none; }
        .citation-details.open { display: block; }
        .source-tag { color: var(--primary); font-weight: 600; cursor: pointer; }
        .source-tag:hover { text-decoration: underline; }

        .action-buttons { display: flex; gap: 8px; margin-top: 8px; }
        .btn-sm { font-size: 11px; padding: 4px 10px; border: 1px solid var(--border); background: white; border-radius: 4px; cursor: pointer; }
        .btn-sm:hover { border-color: var(--primary); color: var(--primary); }

        /* --- Notes UI --- */
        .notes-toolbar { padding: 15px 20px; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; background: #fff; }
        .notes-content { flex: 1; padding: 40px; overflow-y: auto; max-width: 800px; margin: 0 auto; width: 100%; }
        .notes-topic { font-size: 18px; font-weight: 700; margin-bottom: 15px; margin-top: 30px; color: var(--text-main); padding-bottom: 5px; border-bottom: 2px solid var(--primary); display: inline-block; }
        .notes-bullet { margin-bottom: 8px; line-height: 1.6; font-size: 15px; display: flex; gap: 8px; }
        .citation-ref { font-size: 10px; background: #E5E7EB; padding: 1px 4px; border-radius: 4px; color: var(--text-muted); margin-top: 3px; white-space: nowrap; }

        /* --- Quiz UI --- */
        .quiz-settings { padding: 20px; background: #F9FAFB; border-bottom: 1px solid var(--border); display: flex; gap: 20px; flex-wrap: wrap; align-items: center; }
        .quiz-area { flex: 1; padding: 40px; overflow-y: auto; display: flex; justify-content: center; }
        .quiz-card { width: 100%; max-width: 700px; background: white; border: 1px solid var(--border); border-radius: 12px; padding: 30px; box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1); }
        .q-header { display: flex; justify-content: space-between; margin-bottom: 20px; color: var(--text-muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px; }
        .q-text { font-size: 18px; font-weight: 600; margin-bottom: 25px; line-height: 1.4; }
        .q-options { display: flex; flex-direction: column; gap: 10px; margin-bottom: 20px; }
        .q-option { padding: 12px; border: 1px solid var(--border); border-radius: 6px; cursor: pointer; transition: 0.2s; }
        .q-option:hover { background: #F3F4F6; }
        .q-option.selected { border-color: var(--primary); background: #EFF6FF; }
        .reveal-btn { width: 100%; padding: 12px; background: var(--text-main); color: white; border: none; border-radius: 6px; font-weight: 600; cursor: pointer; }
        .answer-section { margin-top: 20px; padding-top: 20px; border-top: 1px solid var(--border); display: none; }
        .answer-section.visible { display: block; }
        .explanation { background: #ECFDF5; color: #064E3B; padding: 15px; border-radius: 6px; font-size: 14px; margin-top: 10px; }

        /* --- Modal --- */
        .modal-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.5); display: none; justify-content: center; align-items: center; z-index: 100; }
        .modal { background: white; width: 800px; height: 80vh; border-radius: 12px; display: flex; flex-direction: column; overflow: hidden; box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1); }
        .modal-header { padding: 15px 20px; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; background: #F9FAFB; }
        .modal-body { flex: 1; padding: 20px; overflow-y: auto; font-family: var(--font-mono); font-size: 13px; }
        .code-cell { background: #1E1E1E; color: #D4D4D4; padding: 15px; border-radius: 6px; margin-bottom: 10px; border-left: 4px solid var(--primary); }
        .pdf-page { border: 1px solid #ddd; padding: 20px; margin-bottom: 10px; background: white; box-shadow: 0 2px 4px rgba(0,0,0,0.1); }
        .highlight { background-color: #FEF08A; padding: 2px 0; }

    </style>
</head>
<body>

<header>
    <div class="brand">
        <svg width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><path d="M2 3h6a4 4 0 0 1 4 4v14a3 3 0 0 0-3-3H2z"></path><path d="M22 3h-6a4 4 0 0 0-4 4v14a3 3 0 0 1 3-3h7z"></path></svg>
        Study RAG Assistant
    </div>
    <div class="header-controls">
        <div class="control-group">
            <span>Model:</span>
            <select><option>GPT-4o</option><option>Claude 3.5 Sonnet</option></select>
        </div>
        <div class="control-group">
            <span>Chunk:</span>
            <input type="number" value="512" style="width: 60px">
            <span>Overlap:</span>
            <input type="number" value="50" style="width: 50px">
        </div>
        <div class="stats-pill">4 Files • 1,240 Chunks • Indexed 2m ago</div>
    </div>
</header>

<div class="app-container">
    <!-- Sidebar -->
    <aside>
        <div class="upload-zone" onclick="alert('Mock Upload: Files added to queue.')">
            <svg width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" style="margin-bottom:5px"><path d="M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4"></path><polyline points="17 8 12 3 7 8"></polyline><line x1="12" y1="3" x2="12" y2="15"></line></svg>
            <br>Drag & Drop <br>.ipynb or .pdf
        </div>

        <div class="file-list">
            <!-- File 1 -->
            <div class="file-item">
                <div class="file-icon">
                    <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><path d="M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z"></path><polyline points="14 2 14 8 20 8"></polyline><line x1="16" y1="13" x2="8" y2="13"></line><line x1="16" y1="17" x2="8" y2="17"></line><polyline points="10 9 9 9 8 9"></polyline></svg>
                </div>
                <div class="file-info">
                    <div class="file-name">Deep_Learning_Lec1.pdf</div>
                    <div class="file-meta">
                        <span class="status-badge status-ready">Ready</span>
                    </div>
                </div>
                <div class="file-actions">
                    <button class="btn-icon" title="Re-index">↻</button>
                    <button class="btn-icon" title="Remove">✕</button>
                </div>
                <input type="checkbox" checked style="margin-left: 8px;">
            </div>

            <!-- File 2 -->
            <div class="file-item">
                <div class="file-icon">
                    <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><polyline points="16 18 22 12 16 6"></polyline><polyline points="8 6 2 12 8 18"></polyline></svg>
                </div>
                <div class="file-info">
                    <div class="file-name">Neural_Nets_Practice.ipynb</div>
                    <div class="file-meta">
                        <span class="status-badge status-ready">Ready</span>
                    </div>
                </div>
                <div class="file-actions">
                    <button class="btn-icon" title="Re-index">↻</button>
                    <button class="btn-icon" title="Remove">✕</button>
                </div>
                <input type="checkbox" checked style="margin-left: 8px;">
            </div>

            <!-- File 3 (Indexing) -->
            <div class="file-item">
                <div class="file-icon">
                    <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><path d="M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z"></path><polyline points="14 2 14 8 20 8"></polyline><line x1="12" y1="18" x2="12" y2="12"></line><line x1="9 15" x2="15" y2="15"></line></svg>
                </div>
                <div class="file-info">
                    <div class="file-name">Stats_Review.pdf</div>
                    <div class="file-meta">
                        <span class="status-badge status-indexing">Indexing...</span>
                    </div>
                </div>
                <div class="file-actions">
                    <button class="btn-icon" title="Remove">✕</button>
                </div>
                <input type="checkbox" checked style="margin-left: 8px;">
            </div>
        </div>

        <div class="sidebar-footer">
            <div class="toggle-row">
                <label>Show Selected Only</label>
                <input type="checkbox">
            </div>
            <button class="btn-glossary" onclick="alert('Glossary Drawer would open here.')">
                <span>📖 Memory / Glossary</span>
                <span>›</span>
            </button>
        </div>
    </aside>

    <!-- Main Content -->
    <main>
        <div class="tabs">
            <button class="tab-btn active" onclick="switchTab('chat')">Chat</button>
            <button class="tab-btn" onclick="switchTab('notes')">Notes</button>
            <button class="tab-btn" onclick="switchTab('quiz')">Quiz</button>
        </div>

        <!-- Chat Tab -->
        <div id="tab-chat" class="tab-content active">
            <div class="chat-area" id="chat-container">
                <!-- Welcome Message -->
                <div class="message ai">
                    <div class="bubble">
                        Hi! I've indexed your Deep Learning and Neural Nets notes. Ask me to explain concepts, generate a quiz, or summarize topics.
                    </div>
                </div>
            </div>
            
            <div class="input-area">
                <div class="quick-actions">
                    <div class="pill" onclick="setInput('Explain backpropagation like I\'m 5')">Explain Like I'm 5</div>
                    <div class="pill" onclick="setInput('Give me 3 code examples of RNNs')">Give Code Examples</div>
                    <div class="pill" onclick="setInput('What are the key differences between CNN and RNN?')">Compare Concepts</div>
                </div>
                <div class="chat-input-wrapper">
                    <textarea id="chat-input" placeholder="Ask a question about your files..."></textarea>
                    <button class="btn-primary" onclick="sendMessage()">Ask</button>
                </div>
                <div class="chat-controls">
                    <label class="toggle-label">
                        <input type="checkbox" checked> Strictly Grounded (No Guessing)
                    </label>
                </div>
            </div>
        </div>

        <!-- Notes Tab -->
        <div id="tab-notes" class="tab-content">
            <div class="notes-toolbar">
                <button class="btn-primary">Regenerate Notes</button>
                <div style="display:flex; gap:10px; align-items:center;">
                    <span>Format:</span>
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                <div class="notes-topic">1. Introduction to Neural Networks</div>
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                    <span>•</span>
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                        Neural networks are computing systems inspired by biological neural networks that constitute animal brains.
                        <div class="citation-ref" onclick="openPreview('Deep_Learning_Lec1.pdf', 'pg 2')">[Deep_Learning_Lec1.pdf - pg 2]</div>
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                    <span>•</span>
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                        The fundamental building block is the perceptron, which takes multiple inputs and produces a single output.
                        <div class="citation-ref" onclick="openPreview('Neural_Nets_Practice.ipynb', 'Cell 4')">[Neural_Nets_Practice.ipynb - Cell 4]</div>
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                <div class="notes-topic">2. Backpropagation</div>
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                    <span>•</span>
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                        Backpropagation is a method for calculating the gradient of the loss function with respect to each weight.
                        <div class="citation-ref" onclick="openPreview('Deep_Learning_Lec1.pdf', 'pg 14')">[Deep_Learning_Lec1.pdf - pg 14]</div>
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                        Which of the following activation functions is most commonly used in the output layer of a binary classification problem?
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                            <strong>Explanation:</strong> The Sigmoid function squashes output between 0 and 1, which is perfect for representing probability in binary classification. Softmax is used for multi-class.
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                            <small>Source: <span class="source-tag" onclick="openPreview('Neural_Nets_Practice.ipynb', 'Cell 12')">Neural_Nets_Practice.ipynb - Cell 12</span></small>
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def sigmoid(z):
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                    <h3>Chapter 4: Activation Functions</h3>
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