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<html lang="en" data-theme="dark">
<head>
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Customer Churn Prediction Portal</title>
<meta name="description" content="Predict customer churn probability using advanced machine learning models based on telecom profile characteristics.">
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<body>
<header>
<button class="theme-toggle-btn" id="themeToggle" onclick="toggleTheme()" type="button">
<i class="fa-solid fa-moon"></i> <span id="themeToggleText">Dark Mode</span>
</button>
<div class="header-content">
<h1><i class="fa-solid fa-chart-line"></i> Customer Churn Analyzer</h1>
<p>Configure a customer profile below to estimate the likelihood of churn using our optimized XGBoost prediction engine.</p>
</div>
</header>
<main>
<form id="churnForm">
<div class="form-layout">
<!-- Section 1: Customer Profile -->
<section class="section-card">
<h2 class="section-title"><i class="fa-solid fa-user-tie"></i> Customer Profile & Demographics</h2>
<div class="grid-container">
<div class="form-group">
<label for="gender"><i class="fa-solid fa-venus-mars"></i> Gender</label>
<select name="gender" id="gender" required>
<option value="0">Female</option>
<option value="1">Male</option>
</select>
<span class="field-desc">Binary representation (Female=0, Male=1)</span>
</div>
<div class="form-group">
<label for="SeniorCitizen"><i class="fa-solid fa-person-cane"></i> Senior Citizen</label>
<select name="SeniorCitizen" id="SeniorCitizen" required>
<option value="0">No</option>
<option value="1">Yes</option>
</select>
<span class="field-desc">Is the customer 65 years or older?</span>
</div>
<div class="form-group">
<label for="Partner"><i class="fa-solid fa-ring"></i> Partner Status</label>
<select name="Partner" id="Partner" required>
<option value="No">No Partner</option>
<option value="Yes">Has Partner</option>
</select>
<span class="field-desc">Primary demographic status flag</span>
</div>
<div class="form-group">
<label for="Dependents"><i class="fa-solid fa-children"></i> Dependents Status</label>
<select name="Dependents" id="Dependents" required>
<option value="No">No Dependents</option>
<option value="Yes">Has Dependents</option>
</select>
<span class="field-desc">Dependent children or relatives</span>
</div>
</div>
</section>
<!-- Section 2: Core Phone & Internet Services -->
<section class="section-card">
<h2 class="section-title"><i class="fa-solid fa-network-wired"></i> Core Telecom Services</h2>
<div class="grid-container">
<div class="form-group">
<label for="PhoneService"><i class="fa-solid fa-phone"></i> Phone Service</label>
<select name="PhoneService" id="PhoneService" required>
<option value="Yes">Yes</option>
<option value="No">No</option>
</select>
<span class="field-desc">Subscribes to standard voice line</span>
</div>
<div class="form-group">
<label for="MultipleLines"><i class="fa-solid fa-phone-volume"></i> Multiple Lines</label>
<select name="MultipleLines" id="MultipleLines" required>
<option value="No">No</option>
<option value="Yes">Yes</option>
<option value="No phone service">No phone service</option>
</select>
<span class="field-desc">Multiple telephone numbers active</span>
</div>
<div class="form-group">
<label for="InternetService"><i class="fa-solid fa-wifi"></i> Internet Service Type</label>
<select name="InternetService" id="InternetService" required>
<option value="DSL">DSL</option>
<option value="Fiber optic">Fiber optic</option>
<option value="No">No Internet Service</option>
</select>
<span class="field-desc">Technology type</span>
</div>
</div>
</section>
<!-- Section 3: Premium Add-ons & Streaming -->
<section class="section-card">
<h2 class="section-title"><i class="fa-solid fa-cubes"></i> Service Add-Ons & Streaming</h2>
<div class="grid-container">
<div class="form-group">
<label for="OnlineSecurity"><i class="fa-solid fa-shield-halved"></i> Online Security</label>
<select name="OnlineSecurity" id="OnlineSecurity" required>
<option value="No">No</option>
<option value="Yes">Yes</option>
<option value="No internet service">No internet service</option>
</select>
<span class="field-desc">Antivirus & firewall bundle</span>
</div>
<div class="form-group">
<label for="OnlineBackup"><i class="fa-solid fa-cloud-arrow-up"></i> Online Backup</label>
<select name="OnlineBackup" id="OnlineBackup" required>
<option value="No">No</option>
<option value="Yes">Yes</option>
<option value="No internet service">No internet service</option>
</select>
<span class="field-desc">Cloud backup storage</span>
</div>
<div class="form-group">
<label for="DeviceProtection"><i class="fa-solid fa-laptop-medical"></i> Device Protection</label>
<select name="DeviceProtection" id="DeviceProtection" required>
<option value="No">No</option>
<option value="Yes">Yes</option>
<option value="No internet service">No internet service</option>
</select>
<span class="field-desc">Accidental damage coverage</span>
</div>
<div class="form-group">
<label for="TechSupport"><i class="fa-solid fa-user-gear"></i> Tech Support</label>
<select name="TechSupport" id="TechSupport" required>
<option value="No">No</option>
<option value="Yes">Yes</option>
<option value="No internet service">No internet service</option>
</select>
<span class="field-desc">Priority assistance plan</span>
</div>
<div class="form-group">
<label for="StreamingTV"><i class="fa-solid fa-tv"></i> Streaming TV</label>
<select name="StreamingTV" id="StreamingTV" required>
<option value="No">No</option>
<option value="Yes">Yes</option>
<option value="No internet service">No internet service</option>
</select>
<span class="field-desc">Live TV channels package</span>
</div>
<div class="form-group">
<label for="StreamingMovies"><i class="fa-solid fa-film"></i> Streaming Movies</label>
<select name="StreamingMovies" id="StreamingMovies" required>
<option value="No">No</option>
<option value="Yes">Yes</option>
<option value="No internet service">No internet service</option>
</select>
<span class="field-desc">Movie library subscription</span>
</div>
</div>
</section>
<!-- Section 4: Contract & Financials -->
<section class="section-card">
<h2 class="section-title"><i class="fa-solid fa-file-invoice-dollar"></i> Contract & Billing Details</h2>
<div class="grid-container">
<div class="form-group">
<label for="Contract"><i class="fa-solid fa-file-contract"></i> Contract Type</label>
<select name="Contract" id="Contract" required>
<option value="Month-to-month">Month-to-month</option>
<option value="One year">One year</option>
<option value="Two year">Two year</option>
</select>
<span class="field-desc">Billing term structure</span>
</div>
<div class="form-group">
<label for="PaperlessBilling"><i class="fa-solid fa-envelope-open-text"></i> Paperless Billing</label>
<select name="PaperlessBilling" id="PaperlessBilling" required>
<option value="Yes">Yes</option>
<option value="No">No</option>
</select>
<span class="field-desc">Invoice delivery preference</span>
</div>
<div class="form-group">
<label for="PaymentMethod"><i class="fa-solid fa-credit-card"></i> Payment Method</label>
<select name="PaymentMethod" id="PaymentMethod" required>
<option value="Electronic check">Electronic check</option>
<option value="Mailed check">Mailed check</option>
<option value="Bank transfer (automatic)">Bank transfer (automatic)</option>
<option value="Credit card (automatic)">Credit card (automatic)</option>
</select>
<span class="field-desc">Billing settlement channel</span>
</div>
<div class="form-group">
<label for="tenure"><i class="fa-solid fa-hourglass-half"></i> Tenure (Months)</label>
<input type="number" name="tenure" id="tenure" min="0" max="72" placeholder="e.g. 12" required>
<span class="field-desc">Months customer has stayed (0 to 72)</span>
</div>
<div class="form-group">
<label for="MonthlyCharges"><i class="fa-solid fa-sack-dollar"></i> Monthly Charges ($)</label>
<input type="number" name="MonthlyCharges" id="MonthlyCharges" min="0" max="150" step="0.01" placeholder="e.g. 64.85" required>
<span class="field-desc">Current monthly invoice price</span>
</div>
<div class="form-group">
<label for="TotalCharges"><i class="fa-solid fa-money-bill-wave"></i> Total Charges ($)</label>
<input type="number" name="TotalCharges" id="TotalCharges" min="0" max="10000" step="0.01" placeholder="e.g. 2292.15" required>
<span class="field-desc">Accrued bill amount across tenure</span>
</div>
</div>
</section>
<!-- Submit & Reset Actions -->
<div class="form-actions">
<div class="nav-group">
<a href="{{ url_for('home') }}" class="btn btn-secondary">
<i class="fa-solid fa-house"></i> Return to Home
</a>
<a href="{{ url_for('documentation') }}" class="btn btn-secondary">
<i class="fa-solid fa-book"></i> View Documentation
</a>
</div>
<div class="action-group">
<button type="button" class="btn btn-warning" onclick="resetForm()">
<i class="fa-solid fa-arrow-rotate-left"></i> Reset Fields
</button>
<button type="submit" class="btn btn-primary">
<i class="fa-solid fa-circle-play"></i> Run Prediction Model
</button>
</div>
</div>
<!-- Result Container located at the bottom of the page, below the buttons -->
<div id="resultContainer"></div>
</div>
</form>
</main>
<footer>
<p>© 2026 Customer Churn Prediction Engine. All rights reserved. Powered by Flask, XGBoost & Scikit-Learn.</p>
</footer>
<script>
// Initialize Theme
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const savedTheme = localStorage.getItem('theme') || 'dark'; // Default to dark!
document.documentElement.setAttribute('data-theme', savedTheme);
updateThemeUI(savedTheme);
// Initialize service dependencies and constraints
checkServiceDependencies();
document.getElementById('PhoneService').addEventListener('change', checkServiceDependencies);
document.getElementById('InternetService').addEventListener('change', checkServiceDependencies);
// Handle asynchronous native form submission
document.getElementById('churnForm').addEventListener('submit', function(event) {
event.preventDefault(); // Intercept page navigation
const phoneService = document.getElementById('PhoneService').value;
const internetService = document.getElementById('InternetService').value;
// Double check: if both phone and internet are 'No', block submission
if (phoneService === 'No' && internetService === 'No') {
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const btnText = document.getElementById('themeToggleText');
const btnIcon = document.querySelector('.theme-toggle-btn i');
if (theme === 'dark') {
btnText.textContent = 'Light Mode';
btnIcon.className = 'fa-solid fa-sun';
} else {
btnText.textContent = 'Dark Mode';
btnIcon.className = 'fa-solid fa-moon';
}
}
// Dynamic UI constraints for phone and internet services selection
function checkServiceDependencies() {
const phoneService = document.getElementById('PhoneService').value;
const multipleLines = document.getElementById('MultipleLines');
const internetService = document.getElementById('InternetService').value;
const submitBtn = document.querySelector('button[type="submit"]');
const resultContainer = document.getElementById('resultContainer');
// 1. Phone Service -> Multiple Lines constraint
if (phoneService === 'No') {
multipleLines.value = 'No phone service';
multipleLines.disabled = true;
multipleLines.style.opacity = '0.6';
} else {
if (multipleLines.value === 'No phone service') {
multipleLines.value = 'No';
}
multipleLines.disabled = false;
multipleLines.style.opacity = '1';
}
// 2. Internet Service -> Add-ons constraints
const addons = ['OnlineSecurity', 'OnlineBackup', 'DeviceProtection', 'TechSupport', 'StreamingTV', 'StreamingMovies'];
if (internetService === 'No') {
addons.forEach(id => {
const select = document.getElementById(id);
select.value = 'No internet service';
select.disabled = true;
select.style.opacity = '0.6';
});
} else {
addons.forEach(id => {
const select = document.getElementById(id);
select.disabled = false;
select.style.opacity = '1';
if (select.value === 'No internet service') {
select.value = 'No';
}
});
}
// 3. Dual service deactivation check (Phone Service = No & Internet Service = No)
if (phoneService === 'No' && internetService === 'No') {
submitBtn.disabled = true;
// Render a warning card below buttons
resultContainer.innerHTML = `
<div class="result-card churn-high" style="border-left-color: var(--warning); margin-top: 2rem;">
<div class="result-icon" style="color: var(--warning);">
<i class="fa-solid fa-triangle-exclamation"></i>
</div>
<div class="result-info">
<h3>Inactive Profile Status</h3>
<p>This customer has selected no services from the telecom provider (Phone and Internet are both deactivated). Churn prediction model cannot run on an inactive subscription.</p>
</div>
</div>
`;
resultContainer.scrollIntoView({ behavior: 'smooth' });
} else {
submitBtn.disabled = false;
// Clear message only if it was the subscription warning
if (resultContainer.innerHTML.includes('Inactive Profile Status')) {
resultContainer.innerHTML = '';
}
}
}
// Function to calculate a mock prediction if running offline / from file system
function runClientSideMockPrediction() {
const tenure = parseFloat(document.getElementById('tenure').value) || 0;
const monthly = parseFloat(document.getElementById('MonthlyCharges').value) || 0;
const contract = document.getElementById('Contract').value;
const security = document.getElementById('OnlineSecurity').value;
// Basic churn risk logic matching general trends
let riskFactor = 0.3;
// Monthly charges increase risk
riskFactor += (monthly / 150) * 0.3;
// Tenure reduces risk
riskFactor -= (tenure / 72) * 0.4;
// Month-to-month contracts have high risk
if (contract === 'Month-to-month') riskFactor += 0.25;
if (contract === 'Two year') riskFactor -= 0.2;
// Security reduces risk
if (security === 'Yes') riskFactor -= 0.1;
// Clamp values between 0.02 and 0.98
const churnProb = Math.max(0.02, Math.min(0.98, riskFactor));
const prediction = churnProb > 0.5 ? 1 : 0;
displayPredictionResult(prediction, churnProb);
}
// Dynamically insert and display the prediction result below the action buttons
function displayPredictionResult(prediction, churnProb) {
const container = document.getElementById('resultContainer');
const isHighRisk = churnProb > 0.5;
container.innerHTML = `
<div class="result-card ${isHighRisk ? 'churn-high' : 'churn-low'}">
<div class="result-icon">
${isHighRisk ? '<i class="fa-solid fa-circle-exclamation"></i>' : '<i class="fa-solid fa-circle-check"></i>'}
</div>
<div class="result-info">
<h3>${isHighRisk ? 'High Churn Risk Predicted' : 'Low Churn Risk Predicted'}</h3>
<p>${isHighRisk ? 'This customer is likely to terminate service. Immediate retention measures are recommended.' : 'This customer is satisfied and is likely to remain with the service.'}</p>
</div>
<div class="result-score">
<div class="percentage">${(churnProb * 100).toFixed(1)}%</div>
<div class="label">Churn Probability</div>
</div>
</div>
`;
// Smooth scroll to view results natively
container.scrollIntoView({ behavior: 'smooth' });
}
// Reset Form to initial default state
function resetForm() {
document.getElementById('churnForm').reset();
// Clear result container
const container = document.getElementById('resultContainer');
if (container) {
container.innerHTML = '';
}
}
</script>
</body>
</html>
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