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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>SAI ROHITH VULAPU | Data Science Engineer</title>
    <script src="https://cdn.tailwindcss.com"></script>
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css">
    <script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/r128/three.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/vanta.net.min.js"></script>
    <style>
        @import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');
        
        :root {
            --primary: #3b82f6;
            --secondary: #10b981;
            --dark: #1e293b;
            --light: #f8fafc;
        }
        
        body {
            font-family: 'Poppins', sans-serif;
            background-color: #f1f5f9;
            color: var(--dark);
            overflow-x: hidden;
            transition: background-color 0.3s, color 0.3s;
        }
        
        .dark {
            background-color: #0f172a;
            color: #f8fafc;
        }
        
        .dark .card {
            background-color: #1e293b;
            color: #f8fafc;
        }
        
        .dark .bg-white {
            background-color: #1e293b !important;
            color: #f8fafc;
        }
        
        .dark .bg-slate-50 {
            background-color: #0f172a !important;
        }
        
        .dark .text-slate-600, .dark .text-slate-700 {
            color: #e2e8f0 !important;
        }
        
        .dark .bg-gradient-to-br {
            background-image: linear-gradient(to bottom right, #1e293b, #1e293b) !important;
        }
        
        .dark .border-slate-300 {
            border-color: #334155 !important;
        }
        
        .dark .shadow-md {
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.2), 0 2px 4px -1px rgba(0, 0, 0, 0.12) !important;
        }
        
        .gradient-text {
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        
        .card {
            transition: all 0.3s ease;
            transform: translateY(0);
        }
        
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
        }
        
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -40px;
            top: 0;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: var(--primary);
            border: 4px solid white;
        }
        
        .dark .timeline-item::before {
            border-color: #1e293b;
        }
        
        .timeline::before {
            content: '';
            position: absolute;
            left: 30px;
            top: 0;
            height: 100%;
            width: 2px;
            background: #e2e8f0;
        }
        
        .dark .timeline::before {
            background: #334155;
        }
        
        .skill-bar {
            height: 8px;
            border-radius: 4px;
            background: #e2e8f0;
            overflow: hidden;
        }
        
        .dark .skill-bar {
            background: #334155;
        }
        
        .skill-progress {
            height: 100%;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            transition: width 1s ease-in-out;
        }
        
        .floating {
            animation: floating 3s ease-in-out infinite;
        }
        
        @keyframes floating {
            0% { transform: translateY(0px); }
            50% { transform: translateY(-15px); }
            100% { transform: translateY(0px); }
        }
        
        .fade-in {
            opacity: 0;
            animation: fadeIn 1s ease-in forwards;
        }
        
        @keyframes fadeIn {
            to { opacity: 1; }
        }
        
        .delay-1 { animation-delay: 0.2s; }
        .delay-2 { animation-delay: 0.4s; }
        .delay-3 { animation-delay: 0.6s; }
        .delay-4 { animation-delay: 0.8s; }
        
        .glow {
            box-shadow: 0 0 15px rgba(59, 130, 246, 0.5);
        }
        
        .typewriter {
            overflow: hidden;
            border-right: 3px solid var(--primary);
            white-space: nowrap;
            animation: typing 3.5s steps(40, end), blink-caret 0.75s step-end infinite;
        }
        
        @keyframes typing {
            from { width: 0 }
            to { width: 100% }
        }
        
        @keyframes blink-caret {
            from, to { border-color: transparent }
            50% { border-color: var(--primary) }
        }
        
        .parallax {
            background-attachment: fixed;
            background-position: center;
            background-repeat: no-repeat;
            background-size: cover;
        }
        
        .hover-underline-animation {
            display: inline-block;
            position: relative;
        }
        
        .hover-underline-animation::after {
            content: '';
            position: absolute;
            width: 100%;
            transform: scaleX(0);
            height: 2px;
            bottom: 0;
            left: 0;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            transform-origin: bottom right;
            transition: transform 0.25s ease-out;
        }
        
        .hover-underline-animation:hover::after {
            transform: scaleX(1);
            transform-origin: bottom left;
        }
        
        /* Dark mode toggle */
        .toggle-checkbox:checked {
            right: 0;
            background-color: #10b981;
        }
        
        .toggle-checkbox:checked + .toggle-label {
            background-color: #1e293b;
        }
        
        /* 3D Character Container */
        .character-container {
            width: 300px;
            height: 300px;
            position: relative;
            margin: 0 auto;
        }
        
        @media (max-width: 768px) {
            .character-container {
                width: 250px;
                height: 250px;
            }
        }
        
        /* Floating animations */
        @keyframes float1 {
            0% { transform: translateY(0px); }
            50% { transform: translateY(-20px); }
            100% { transform: translateY(0px); }
        }
        
        @keyframes float2 {
            0% { transform: translateY(0px) rotate(0deg); }
            50% { transform: translateY(-10px) rotate(5deg); }
            100% { transform: translateY(0px) rotate(0deg); }
        }
        
        .float-animation1 {
            animation: float1 4s ease-in-out infinite;
        }
        
        .float-animation2 {
            animation: float2 5s ease-in-out infinite;
        }
        
        /* Cursor interaction styles */
        .character-hover-effect {
            transition: transform 0.3s ease;
        }
        
        /* Responsive adjustments */
        @media (max-width: 1024px) {
            .hero-content {
                flex-direction: column;
                text-align: center;
            }
            
            .hero-buttons {
                justify-content: center;
            }
            
            #about .grid-cols-3 {
                grid-template-columns: 1fr;
            }
            
            .timeline::before {
                left: 20px;
            }
            
            .timeline-item::before {
                left: -30px;
            }
        }
        
        @media (max-width: 768px) {
            .project-grid {
                grid-template-columns: 1fr;
            }
            
            .skill-grid {
                grid-template-columns: 1fr;
            }
            
            .contact-box {
                flex-direction: column;
            }
            
            .contact-info {
                width: 100%;
            }
            
            .contact-form {
                width: 100%;
            }
            
            .footer-content {
                flex-direction: column;
                text-align: center;
            }
            
            .footer-social {
                justify-content: center;
                margin-top: 1rem;
            }
        }
        
        /* No select for particles */
        .particles, .particles * {
            user-select: none;
            -webkit-user-select: none;
        }
        
        /* Preloader */
        .preloader {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: #0f172a;
            display: flex;
            justify-content: center;
            align-items: center;
            z-index: 9999;
            transition: opacity 0.5s ease;
        }
        
        .preloader-content {
            text-align: center;
        }
        
        .spinner {
            width: 70px;
            height: 70px;
            border: 5px solid rgba(255, 255, 255, 0.3);
            border-radius: 50%;
            border-top-color: #3b82f6;
            animation: spin 1s ease-in-out infinite;
            margin: 0 auto 1rem;
        }
        
        @keyframes spin {
            to { transform: rotate(360deg); }
        }
    </style>
</head>
<body class="min-h-screen">
    <!-- Preloader -->
    <div class="preloader" id="preloader">
        <div class="preloader-content">
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                    <h1 class="text-4xl md:text-6xl font-bold mb-6 dark:text-white">
                        <span class="gradient-text">Innovative</span> Data Science Engineer
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                        Specializing in AI product development and machine learning.
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                            View Projects
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            <h2 class="text-3xl md:text-4xl font-bold text-center mb-16 gradient-text fade-in">Professional Summary</h2>
            
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                        <p class="text-lg text-slate-700 leading-relaxed dark:text-slate-300">
                            Innovative Data Science Engineer at APEX CURA HEALTHCARE IT, specializing in AI product development and machine learning. 
                            Successfully built an AI-powered SaaS product, fine-tuned LLMs for medical applications, and implemented a chatbot RAG pipeline. 
                            Proficient in Python and decision-making, driving impactful solutions in healthcare technology.
                        </p>
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                    <h3 class="text-xl font-bold mb-3 dark:text-white">Education</h3>
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                            <span class="text-emerald-500 mr-2"></span>
                            <span class="dark:text-slate-300">JNTUA College of Engineering, B.Tech CSE (8.3 CGPA)</span>
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                            <span class="text-emerald-500 mr-2"></span>
                            <span class="dark:text-slate-300">Narayana IIT Academy, Intermediate (9.8 CGPA)</span>
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                            <span class="text-emerald-500 mr-2"></span>
                            <span class="dark:text-slate-300">Sri Chaitanya Techno School, SSC (10 CGPA)</span>
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                    <h3 class="text-xl font-bold mb-3 dark:text-white">Achievements</h3>
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                            <span class="text-emerald-500 mr-2"></span>
                            <span class="dark:text-slate-300">Built AI-powered SaaS product for hospitals</span>
                        </li>
                        <li class="flex items-start">
                            <span class="text-emerald-500 mr-2"></span>
                            <span class="dark:text-slate-300">Fine-tuned LLMs for medical applications</span>
                        </li>
                        <li class="flex items-start">
                            <span class="text-emerald-500 mr-2"></span>
                            <span class="dark:text-slate-300">Implemented RAG pipeline for hospital chatbot</span>
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                    <h3 class="text-xl font-bold mb-3 dark:text-white">Passion</h3>
                    <p class="text-slate-600 dark:text-slate-300">
                        Creating AI solutions that transform healthcare, making it more accessible and efficient through cutting-edge technology.
                    </p>
                    <div class="mt-4">
                        <span class="inline-block bg-blue-100 text-blue-800 text-sm px-3 py-1 rounded-full mr-2 mb-2 dark:bg-blue-900/30 dark:text-blue-300">#AI</span>
                        <span class="inline-block bg-emerald-100 text-emerald-800 text-sm px-3 py-1 rounded-full mr-2 mb-2 dark:bg-emerald-900/30 dark:text-emerald-300">#Healthcare</span>
                        <span class="inline-block bg-purple-100 text-purple-800 text-sm px-3 py-1 rounded-full mr-2 mb-2 dark:bg-purple-900/30 dark:text-purple-300">#Innovation</span>
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    </section>

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            <h2 class="text-3xl md:text-4xl font-bold text-center mb-16 gradient-text fade-in">Professional Experience</h2>
            
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                <!-- APEX CURA -->
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                            <h3 class="text-xl font-bold dark:text-white">Apex Cura Helathcare It</h3>
                            <span class="bg-blue-100 text-blue-800 text-sm px-3 py-1 rounded-full dark:bg-blue-900/30 dark:text-blue-300">April 2024 - Present</span>
                        </div>
                        <ul class="list-disc pl-5 space-y-2 text-slate-600 dark:text-slate-300">
                            <li>Building a AI powered SaaS product for hospitals</li>
                            <li>Fine-tuning LLM's to achieve the medical knowledge</li>
                            <li>Implemented a RAG pipeline for a hospital specific chatbot</li>
                            <li>Created a AI based Suggestion system to help doctors write the prescription effortlessly</li>
                            <li>Built a Copilot for our product</li>
                        </ul>
                    </div>
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                <!-- AURORA E-LABS -->
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                            <h3 class="text-xl font-bold dark:text-white">A U R O R A E - L A B S</h3>
                            <span class="bg-blue-100 text-blue-800 text-sm px-3 py-1 rounded-full dark:bg-blue-900/30 dark:text-blue-300">Aug 2023 - Mar 2024</span>
                        </div>
                        <ul class="list-disc pl-5 space-y-2 text-slate-600 dark:text-slate-300">
                            <li>Built POC for converting natural language to SQL/Cypher query</li>
                            <li>Another POC includes audio transcription using LLM's</li>
                        </ul>
                    </div>
                </div>
                
                <!-- ANUBRAIN -->
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                            <h3 class="text-xl font-bold dark:text-white">ANUBRAIN TECHNOLOGY</h3>
                            <span class="bg-blue-100 text-blue-800 text-sm px-3 py-1 rounded-full dark:bg-blue-900/30 dark:text-blue-300">Mar 2023 - July 2023</span>
                        </div>
                        <p class="text-slate-600 dark:text-slate-300">
                            Executed numerous data science projects as a freelancer, delivering solutions tailored to client needs and requirements.
                        </p>
                    </div>
                </div>
                
                <!-- SHUNYAOS -->
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                            <h3 class="text-xl font-bold dark:text-white">S H U N Y A O S</h3>
                            <span class="bg-blue-100 text-blue-800 text-sm px-3 py-1 rounded-full dark:bg-blue-900/30 dark:text-blue-300">Jan 2023 - March 2023</span>
                        </div>
                        <p class="text-slate-600 dark:text-slate-300">
                            Spearheaded pedestrian detection projects, undertaking data labeling tasks independently to ensure high-quality training data.
                        </p>
                    </div>
                </div>
            </div>
        </div>
    </section>

    <!-- Projects Section -->
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            <h2 class="text-3xl md:text-4xl font-bold text-center mb-16 gradient-text fade-in">Featured Projects</h2>
            
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                <!-- Brain Tumor Segmentation -->
                <div class="bg-gradient-to-br from-blue-50 to-emerald-50 rounded-xl overflow-hidden shadow-lg card fade-in delay-1 dark:from-blue-900/20 dark:to-emerald-900/20">
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                        <div class="flex justify-between items-start mb-3">
                            <h3 class="text-xl font-bold dark:text-white">Brain Tumor Segmentation</h3>
                            <span class="bg-blue-100 text-blue-800 text-xs px-2 py-1 rounded-full dark:bg-blue-900/30 dark:text-blue-300">2024</span>
                        </div>
                        <p class="text-slate-600 mb-4 dark:text-slate-300">
                            Developed a Brain Tumor Segmentation project utilizing UNet architecture for accurate segmentation results.
                        </p>
                        <div class="flex flex-wrap gap-2">
                            <span class="text-xs bg-blue-100 text-blue-800 px-2 py-1 rounded dark:bg-blue-900/30 dark:text-blue-300">Python</span>
                            <span class="text-xs bg-emerald-100 text-emerald-800 px-2 py-1 rounded dark:bg-emerald-900/30 dark:text-emerald-300">TensorFlow</span>
                            <span class="text-xs bg-purple-100 text-purple-800 px-2 py-1 rounded dark:bg-purple-900/30 dark:text-purple-300">UNet</span>
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                <!-- NLP Search -->
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                            <h3 class="text-xl font-bold dark:text-white">NLP Search</h3>
                            <span class="bg-blue-100 text-blue-800 text-xs px-2 py-1 rounded-full dark:bg-blue-900/30 dark:text-blue-300">2023</span>
                        </div>
                        <p class="text-slate-600 mb-4 dark:text-slate-300">
                            Revolutionizing database interaction by developing intuitive solutions for crafting SQL queries using natural language.
                        </p>
                        <div class="flex flex-wrap gap-2">
                            <span class="text-xs bg-blue-100 text-blue-800 px-2 py-1 rounded dark:bg-blue-900/30 dark:text-blue-300">NLP</span>
                            <span class="text-xs bg-emerald-100 text-emerald-800 px-2 py-1 rounded dark:bg-emerald-900/30 dark:text-emerald-300">LLMs</span>
                            <span class="text-xs bg-purple-100 text-purple-800 px-2 py-1 rounded dark:bg-purple-900/30 dark:text-purple-300">SQL</span>
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                    </div>
                </div>
                
                <!-- Pedestrian Detection -->
                <div class="bg-gradient-to-br from-blue-50 to-emerald-50 rounded-xl overflow-hidden shadow-lg card fade-in delay-3 dark:from-blue-900/20 dark:to-emerald-900/20">
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                        <i class="fas fa-walking text-white text-6xl"></i>
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                        <div class="flex justify-between items-start mb-3">
                            <h3 class="text-xl font-bold dark:text-white">Pedestrian Detection</h3>
                            <span class="bg-blue-100 text-blue-800 text-xs px-2 py-1 rounded-full dark:bg-blue-900/30 dark:text-blue-300">2023</span>
                        </div>
                        <p class="text-slate-600 mb-4 dark:text-slate-300">
                            Implementing TensorFlow Object Detection models to accurately identify pedestrians in images or videos.
                        </p>
                        <div class="flex flex-wrap gap-2">
                            <span class="text-xs bg-blue-100 text-blue-800 px-2 py-1 rounded dark:bg-blue-900/30 dark:text-blue-300">TFOD</span>
                            <span class="text-xs bg-emerald-100 text-emerald-800 px-2 py-1 rounded dark:bg-emerald-900/30 dark:text-emerald-300">Computer Vision</span>
                            <span class="text-xs bg-purple-100 text-purple-800 px-2 py-1 rounded dark:bg-purple-900/30 dark:text-purple-300">Object Detection</span>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </section>

    <!-- Skills Section -->
    <section id="skills" class="py-20 bg-slate-50 dark:bg-slate-900">
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            <h2 class="text-3xl md:text-4xl font-bold text-center mb-16 gradient-text fade-in">Technical Skills</h2>
            
            <div class="grid grid-cols-1 md:grid-cols-2 gap-8 max-w-4xl mx-auto skill-grid">
                <div class="bg-white rounded-xl shadow-md p-6 card fade-in delay-1 dark:bg-slate-800">
                    <h3 class="text-xl font-bold mb-6 text-center dark:text-white">Core Competencies</h3>
                    <div class="space-y-5">
                        <div>
                            <div class="flex justify-between mb-1">
                                <span class="font-medium dark:text-slate-300">Python</span>
                                <span class="text-blue-500 dark:text-blue-400">95%</span>
                            </div>
                            <div class="skill-bar">
                                <div class="skill-progress" style="width: 95%"></div>
                            </div>
                        </div>
                        <div>
                            <div class="flex justify-between mb-1">
                                <span class="font-medium dark:text-slate-300">Machine Learning</span>
                                <span class="text-blue-500 dark:text-blue-400">90%</span>
                            </div>
                            <div class="skill-bar">
                                <div class="skill-progress" style="width: 90%"></div>
                            </div>
                        </div>
                        <div>
                            <div class="flex justify-between mb-1">
                                <span class="font-medium dark:text-slate-300">AI Product Development</span>
                                <span class="text-blue-500 dark:text-blue-400">88%</span>
                            </div>
                            <div class="skill-bar">
                                <div class="skill-progress" style="width: 88%"></div>
                            </div>
                        </div>
                        <div>
                            <div class="flex justify-between mb-1">
                                <span class="font-medium dark:text-slate-300">Neural Networks</span>
                                <span class="text-blue-500 dark:text-blue-400">85%</span>
                            </div>
                            <div class="skill-bar">
                                <div class="skill-progress" style="width: 85%"></div>
                            </div>
                        </div>
                    </div>
                </div>
                
                <div class="bg-white rounded-xl shadow-md p-6 card fade-in delay-2 dark:bg-slate-800">
                    <h3 class="text-xl font-bold mb-6 text-center dark:text-white">Technologies & Tools</h3>
                    <div class="grid grid-cols-2 gap-4">
                        <div class="flex items-center p-3 bg-blue-50 rounded-lg dark:bg-blue-900/20">
                            <i class="fab fa-python text-blue-500 text-2xl mr-3 dark:text-blue-400"></i>
                            <span class="dark:text-slate-300">Python</span>
                        </div>
                        <div class="flex items-center p-3 bg-blue-50 rounded-lg dark:bg-blue-900/20">
                            <i class="fas fa-brain text-blue-500 text-2xl mr-3 dark:text-blue-400"></i>
                            <span class="dark:text-slate-300">TensorFlow</span>
                        </div>
                        <div class="flex items-center p-3 bg-blue-50 rounded-lg dark:bg-blue-900/20">
                            <i class="fas fa-database text-blue-500 text-2xl mr-3 dark:text-blue-400"></i>
                            <span class="dark:text-slate-300">MySQL</span>
                        </div>
                        <div class="flex items-center p-3 bg-blue-50 rounded-lg dark:bg-blue-900/20">
                            <i class="fab fa-aws text-blue-500 text-2xl mr-3 dark:text-blue-400"></i>
                            <span class="dark:text-slate-300">AWS</span>
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                        <div class="flex items-center p-3 bg-blue-50 rounded-lg dark:bg-blue-900/20">
                            <i class="fas fa-project-diagram text-blue-500 text-2xl mr-3 dark:text-blue-400"></i>
                            <span class="dark:text-slate-300">Cypher QL</span>
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                        <div class="flex items-center p-3 bg-blue-50 rounded-lg dark:bg-blue-900/20">
                            <i class="fas fa-robot text-blue-500 text-2xl mr-3 dark:text-blue-400"></i>
                            <span class="dark:text-slate-300">LLMs</span>
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                        <div class="flex items-center p-3 bg-blue-50 rounded-lg dark:bg-blue-900/20">
                            <i class="fas fa-eye text-blue-500 text-2xl mr-3 dark:text-blue-400"></i>
                            <span class="dark:text-slate-300">Computer Vision</span>
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                        <div class="flex items-center p-3 bg-blue-50 rounded-lg dark:bg-blue-900/20">
                            <i class="fas fa-comments text-blue-500 text-2xl mr-3 dark:text-blue-400"></i>
                            <span class="dark:text-slate-300">NLP</span>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </section>

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            <h2 class="text-3xl md:text-4xl font-bold text-center mb-16 fade-in">Get In Touch</h2>
            
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                        <h3 class="text-2xl font-bold mb-6">Contact Information</h3>
                        <div class="space-y-4">
                            <div class="flex items-start">
                                <i class="fas fa-envelope mt-1 mr-4"></i>
                                <div>
                                    <h4 class="font-medium">Email</h4>
                                    <p class="text-blue-100">[email protected]</p>
                                </div>
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                                <div>
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                                </div>
                            </div>
                        </div>
                        <div class="mt-8 flex space-x-4">
                            <a href="#" class="w-10 h-10 rounded-full bg-white/20 flex items-center justify-center hover:bg-white/30 transition">
                                <i class="fab fa-github"></i>
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                        <form class="space-y-4">
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                            <button type="submit" class="w-full bg-gradient-to-r from-blue-500 to-emerald-500 text-white py-3 rounded-lg font-medium hover:shadow-lg transition-all transform hover:scale-105">
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    <!-- Footer -->
    <footer class="bg-slate-900 text-white py-12">
        <div class="container mx-auto px-6">
            <div class="flex flex-col md:flex-row justify-between items-center footer-content">
                <div class="mb-6 md:mb-0">
                    <a href="#" class="text-2xl font-bold gradient-text">SAI ROHITH VULAPU</a>
                    <p class="mt-2 text-slate-400">Innovative Data Science Engineer</p>
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    </footer>

    <!-- Floating AI Elements -->
    <div class="fixed top-20 right-20 z-0 opacity-30 float-animation1">
        <div class="w-20 h-20 bg-blue-400 rounded-full blur-xl dark:bg-blue-800/30"></div>
    </div>
    <div class="fixed bottom-32 left-40 z-0 opacity-30 float-animation2">
        <div class="w-24 h-24 bg-emerald-400 rounded-full blur-xl dark:bg-emerald-800/30"></div>
    </div>
    <div class="fixed top-1/3 left-1/4 z-0 opacity-20 float-animation1">
        <div class="w-32 h-32 bg-purple-400 rounded-full blur-xl dark:bg-purple-800/30"></div>
    </div>

    <script>
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        window.addEventListener('load', function() {
            setTimeout(function() {
                const preloader = document.getElementById('preloader');
                preloader.style.opacity = '0';
                setTimeout(() => preloader.style.display = 'none', 500);
            }, 1000);
        });

        // Interactive Background
        VANTA.NET({
            el: "#vanta-background",
            color: 0x3b82f6,
            backgroundColor: 0xf1f5f9,
            points: 10,
            maxDistance: 22,
            spacing: 16,
            showDots: false
        });

        // Dark mode toggle functionality
        const toggle = document.getElementById('toggle');
        const toggleMobile = document.getElementById('toggle-mobile');
        const body = document.body;
        
        // Check for saved user preference, if any
        if (localStorage.getItem('dark-mode') === 'enabled') {
            body.classList.add('dark');
            toggle.checked = true;
            if (toggleMobile) toggleMobile.checked = true;
            // Change Vanta.js background for dark mode
            VANTA.NET({
                el: "#vanta-background",
                color: 0x3b82f6,
                backgroundColor: 0x0f172a,
                points: 10,
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            });
        }
        
        // Desktop toggle
        toggle.addEventListener('change', function() {
            if (this.checked) {
                body.classList.add('dark');
                localStorage.setItem('dark-mode', 'enabled');
                if (toggleMobile) toggleMobile.checked = true;
                // Change Vanta.js background for dark mode
                VANTA.NET({
                    el: "#vanta-background",
                    color: 0x3b82f6,
                    backgroundColor: 0x0f172a,
                    points: 10,
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                });
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                body.classList.remove('dark');
                localStorage.setItem('dark-mode', 'disabled');
                if (toggleMobile) toggleMobile.checked = false;
                // Change Vanta.js background for light mode
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                    el: "#vanta-background",
                    color: 0x3b82f6,
                    backgroundColor: 0xf1f5f9,
                    points: 10,
                    maxDistance: 22,
                    spacing: 16,
                    showDots: false
                });
            }
        });
        
        // Mobile toggle
        if (toggleMobile) {
            toggleMobile.addEventListener('change', function() {
                if (this.checked) {
                    body.classList.add('dark');
                    localStorage.setItem('dark-mode', 'enabled');
                    toggle.checked = true;
                    // Change Vanta.js background for dark mode
                    VANTA.NET({
                        el: "#vanta-background",
                        color: 0x3b82f6,
                        backgroundColor: 0x0f172a,
                        points: 10,
                        maxDistance: 22,
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                    body.classList.remove('dark');
                    localStorage.setItem('dark-mode', 'disabled');
                    toggle.checked = false;
                    // Change Vanta.js background for light mode
                    VANTA.NET({
                        el: "#vanta-background",
                        color: 0x3b82f6,
                        backgroundColor: 0xf1f5f9,
                        points: 10,
                        maxDistance: 22,
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                        showDots: false
                    });
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            });
        }
        
        // Mobile menu functionality
        const mobileMenuButton = document.getElementById('mobile-menu-button');
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        mobileMenuButton.addEventListener('click', function() {
            mobileMenu.classList.remove('hidden');
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        });
        
        // Close menu when clicking on links
        const mobileLinks = mobileMenu.querySelectorAll('a');
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            link.addEventListener('click', function() {
                mobileMenu.classList.add('hidden');
                mobileMenu.classList.remove('flex');
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        // Create floating particles
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                if (targetElement) {
                    window.scrollTo({
                        top: targetElement.offsetTop - 80,
                        behavior: 'smooth'
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            });
        });

        // 3D Character Animation
        document.addEventListener('DOMContentLoaded', function() {
            const container = document.getElementById('character-container');
            const canvas = document.getElementById('character-canvas');
            
            // Create a simple 3D character (simplified for this example)
            // In a real implementation, you would use a 3D model loader like GLTFLoader
            // and a pre-made 3D model of a data scientist
            
            if (canvas && typeof THREE !== 'undefined') {
                // Set canvas size
                canvas.width = container.clientWidth;
                canvas.height = container.clientHeight;
                
                // Scene setup
                const scene = new THREE.Scene();
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                    75, 
                    canvas.width / canvas.height, 
                    0.1, 
                    1000
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                camera.position.z = 5;
                
                // Renderer
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                    canvas: canvas,
                    alpha: true,
                    antialias: true
                });
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                    color: 0x3b82f6,
                    wireframe: true 
                });
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                scene.add(cube);
                
                // Add some floating AI elements around the character
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                const aiGeometry = new THREE.SphereGeometry(0.1, 16, 16);
                const aiMaterial = new THREE.MeshBasicMaterial({ 
                    color: 0x10b981 
                });
                
                for (let i = 0; i < 5; i++) {
                    const aiElement = new THREE.Mesh(aiGeometry, aiMaterial);
                    aiElement.position.x = (Math.random() - 0.5) * 2;
                    aiElement.position.y = (Math.random() - 0.5) * 2;
                    aiElement.position.z = (Math.random() - 0.5) * 2;
                    scene.add(aiElement);
                    aiElements.push(aiElement);
                }
                
                // Animation loop
                function animate() {
                    requestAnimationFrame(animate);
                    
                    // Rotate character
                    cube.rotation.x += 0.01;
                    cube.rotation.y += 0.01;
                    
                    // Animate AI elements
                    aiElements.forEach((element, index) => {
                        element.position.x = Math.sin(Date.now() * 0.001 + index) * 1.5;
                        element.position.y = Math.cos(Date.now() * 0.001 + index * 2) * 1.5;
                        element.position.z = Math.sin(Date.now() * 0.001 + index * 0.5) * 1.5;
                    });
                    
                    renderer.render(scene, camera);
                }
                
                animate();
                
                // Cursor interaction
                container.addEventListener('mousemove', (event) => {
                    const rect = container.getBoundingClientRect();
                    const x = ((event.clientX - rect.left) / container.clientWidth) * 2 - 1;
                    const y = -((event.clientY - rect.top) / container.clientHeight) * 2 + 1;
                    
                    // Rotate character based on cursor position
                    cube.rotation.y = x * 0.5;
                    cube.rotation.x = y * 0.5;
                    
                    // Make AI elements follow cursor
                    aiElements[0].position.x = x * 2;
                    aiElements[0].position.y = y * 2;
                });
                
                // Hover effect
                container.addEventListener('mouseenter', () => {
                    cube.material.color.setHex(0x10b981);
                    cube.scale.set(1.1, 1.1, 1.1);
                });
                
                container.addEventListener('mouseleave', () => {
                    cube.material.color.setHex(0x3b82f6);
                    cube.scale.set(1, 1, 1);
                });
            }
        });

        // Responsive adjustments on resize
        window.addEventListener('resize', function() {
            // Update character canvas size
            const container = document.getElementById('character-container');
            const canvas = document.getElementById('character-canvas');
            if (canvas && container) {
                canvas.width = container.clientWidth;
                canvas.height = container.clientHeight;
            }
        });
    </script>
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