diff --git a/assets/css/custom.css b/assets/css/custom.css
new file mode 100644
index 0000000..66be897
--- /dev/null
+++ b/assets/css/custom.css
@@ -0,0 +1,122 @@
+
+:root {
+    --primary-color: #4F46E5;
+    --background-color: #F3F4F6;
+    --surface-color: #FFFFFF;
+    --text-color: #111827;
+    --subtle-text-color: #6B7280;
+    --user-message-bg: var(--primary-color);
+    --bot-message-bg: var(--surface-color);
+}
+
+body {
+    background-color: var(--background-color);
+    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
+    color: var(--text-color);
+    display: flex;
+    flex-direction: column;
+    height: 100vh;
+    margin: 0;
+}
+
+.chat-container {
+    display: flex;
+    flex-direction: column;
+    flex-grow: 1;
+    max-width: 800px;
+    width: 100%;
+    margin: 0 auto;
+    padding: 1rem;
+    box-sizing: border-box;
+}
+
+.chat-header {
+    padding: 1rem;
+    background-color: var(--surface-color);
+    border-bottom: 1px solid #E5E7EB;
+    border-radius: 0.5rem 0.5rem 0 0;
+    text-align: center;
+}
+
+.chat-header h1 {
+    margin: 0;
+    font-size: 1.25rem;
+    font-weight: 600;
+}
+
+.chat-messages {
+    flex-grow: 1;
+    overflow-y: auto;
+    padding: 1.5rem;
+    background-color: #E5E7EB;
+}
+
+.message {
+    display: flex;
+    margin-bottom: 1rem;
+    max-width: 85%;
+}
+
+.message-bubble {
+    padding: 0.75rem 1rem;
+    border-radius: 0.75rem;
+    line-height: 1.5;
+    font-size: 0.9rem;
+}
+
+.message.user {
+    margin-left: auto;
+    flex-direction: row-reverse;
+}
+
+.message.user .message-bubble {
+    background-color: var(--user-message-bg);
+    color: white;
+    border-bottom-right-radius: 0.125rem;
+}
+
+.message.bot .message-bubble {
+    background-color: var(--bot-message-bg);
+    color: var(--text-color);
+    border-bottom-left-radius: 0.125rem;
+    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
+}
+
+.chat-input {
+    display: flex;
+    padding: 1rem;
+    background-color: var(--surface-color);
+    border-top: 1px solid #E5E7EB;
+    border-radius: 0 0 0.5rem 0.5rem;
+}
+
+.chat-input input {
+    flex-grow: 1;
+    border: 1px solid #D1D5DB;
+    border-radius: 0.5rem;
+    padding: 0.75rem 1rem;
+    font-size: 1rem;
+    margin-right: 0.5rem;
+}
+
+.chat-input input:focus {
+    outline: none;
+    border-color: var(--primary-color);
+    box-shadow: 0 0 0 2px rgba(79, 70, 229, 0.3);
+}
+
+.chat-input button {
+    background-color: var(--primary-color);
+    color: white;
+    border: none;
+    padding: 0.75rem 1.5rem;
+    border-radius: 0.5rem;
+    cursor: pointer;
+    font-size: 1rem;
+    font-weight: 500;
+    transition: background-color 0.2s;
+}
+
+.chat-input button:hover {
+    background-color: #4338CA;
+}
diff --git a/assets/js/main.js b/assets/js/main.js
new file mode 100644
index 0000000..e12681c
--- /dev/null
+++ b/assets/js/main.js
@@ -0,0 +1,38 @@
+document.addEventListener('DOMContentLoaded', () => {
+    const chatMessages = document.getElementById('chat-messages');
+    const chatForm = document.getElementById('chat-form');
+    const messageInput = document.getElementById('message-input');
+
+    chatForm.addEventListener('submit', (e) => {
+        e.preventDefault();
+        const messageText = messageInput.value.trim();
+        if (messageText === '') return;
+
+        appendMessage('user', messageText);
+        messageInput.value = '';
+
+        // Simulate bot response
+        setTimeout(() => {
+            const botResponse = 'Searching for "' + messageText + '"... I have found 3 critical vulnerabilities. [Citation: Vendor API]. Would you like to see the details?';
+            appendMessage('bot', botResponse);
+        }, 1200);
+    });
+
+    function appendMessage(sender, text) {
+        const messageWrapper = document.createElement('div');
+        messageWrapper.classList.add('message', sender);
+
+        const messageBubble = document.createElement('div');
+        messageBubble.classList.add('message-bubble');
+        messageBubble.textContent = text;
+
+        messageWrapper.appendChild(messageBubble);
+        chatMessages.appendChild(messageWrapper);
+        chatMessages.scrollTop = chatMessages.scrollHeight;
+    }
+    
+    // Initial bot message
+    setTimeout(() => {
+        appendMessage('bot', 'Welcome to the Intelligent IT Vendor Knowledge Integration System (IIVKIS). How can I help you today?');
+    }, 500);
+});
diff --git a/index.php b/index.php
index 6f7ffab..da6edec 100644
--- a/index.php
+++ b/index.php
@@ -1,131 +1,34 @@
-<?php
-declare(strict_types=1);
-@ini_set('display_errors', '1');
-@error_reporting(E_ALL);
-@date_default_timezone_set('UTC');
-
-$phpVersion = PHP_VERSION;
-$now = date('Y-m-d H:i:s');
-?>
-<!doctype html>
+<!DOCTYPE html>
 <html lang="en">
 <head>
-  <meta charset="utf-8" />
-  <meta name="viewport" content="width=device-width, initial-scale=1" />
-  <title>New Style</title>
-  <link rel="preconnect" href="https://fonts.googleapis.com">
-  <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
-  <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;700&display=swap" rel="stylesheet">
-  <style>
-    :root {
-      --bg-color-start: #6a11cb;
-      --bg-color-end: #2575fc;
-      --text-color: #ffffff;
-      --card-bg-color: rgba(255, 255, 255, 0.01);
-      --card-border-color: rgba(255, 255, 255, 0.1);
-    }
-    body {
-      margin: 0;
-      font-family: 'Inter', sans-serif;
-      background: linear-gradient(45deg, var(--bg-color-start), var(--bg-color-end));
-      color: var(--text-color);
-      display: flex;
-      justify-content: center;
-      align-items: center;
-      min-height: 100vh;
-      text-align: center;
-      overflow: hidden;
-      position: relative;
-    }
-    body::before {
-      content: '';
-      position: absolute;
-      top: 0;
-      left: 0;
-      width: 100%;
-      height: 100%;
-      background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><path d="M-10 10L110 10M10 -10L10 110" stroke-width="1" stroke="rgba(255,255,255,0.05)"/></svg>');
-      animation: bg-pan 20s linear infinite;
-      z-index: -1;
-    }
-    @keyframes bg-pan {
-      0% { background-position: 0% 0%; }
-      100% { background-position: 100% 100%; }
-    }
-    main {
-      padding: 2rem;
-    }
-    .card {
-      background: var(--card-bg-color);
-      border: 1px solid var(--card-border-color);
-      border-radius: 16px;
-      padding: 2rem;
-      backdrop-filter: blur(20px);
-      -webkit-backdrop-filter: blur(20px);
-      box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.1);
-    }
-    .loader {
-      margin: 1.25rem auto 1.25rem;
-      width: 48px;
-      height: 48px;
-      border: 3px solid rgba(255, 255, 255, 0.25);
-      border-top-color: #fff;
-      border-radius: 50%;
-      animation: spin 1s linear infinite;
-    }
-    @keyframes spin {
-      from { transform: rotate(0deg); }
-      to   { transform: rotate(360deg); }
-    }
-    .hint {
-      opacity: 0.9;
-    }
-    .sr-only {
-      position: absolute;
-      width: 1px; height: 1px;
-      padding: 0; margin: -1px;
-      overflow: hidden;
-      clip: rect(0, 0, 0, 0);
-      white-space: nowrap; border: 0;
-    }
-    h1 {
-      font-size: 3rem;
-      font-weight: 700;
-      margin: 0 0 1rem;
-      letter-spacing: -1px;
-    }
-    p {
-      margin: 0.5rem 0;
-      font-size: 1.1rem;
-    }
-    code {
-      background: rgba(0,0,0,0.2);
-      padding: 2px 6px;
-      border-radius: 4px;
-      font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
-    }
-    footer {
-      position: absolute;
-      bottom: 1rem;
-      font-size: 0.8rem;
-      opacity: 0.7;
-    }
-  </style>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>IIVKIS - Chat Interface</title>
+    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/css/bootstrap.min.css" rel="stylesheet">
+    <link rel="preconnect" href="https://fonts.googleapis.com">
+    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
+    <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&display=swap" rel="stylesheet">
+    <link rel="stylesheet" href="assets/css/custom.css?v=<?php echo time(); ?>">
 </head>
 <body>
-  <main>
-    <div class="card">
-      <h1>Analyzing your requirements and generating your website…</h1>
-      <div class="loader" role="status" aria-live="polite" aria-label="Applying initial changes">
-        <span class="sr-only">Loading…</span>
-      </div>
-      <p class="hint"><?= ($_SERVER['HTTP_HOST'] ?? '') === 'appwizzy.com' ? 'AppWiZZy' : 'Flatlogic' ?> AI is collecting your requirements and applying the first changes.</p>
-      <p class="hint">This page will update automatically as the plan is implemented.</p>
-      <p>Runtime: PHP <code><?= htmlspecialchars($phpVersion) ?></code> — UTC <code><?= htmlspecialchars($now) ?></code></p>
+
+    <div class="chat-container">
+        <div class="chat-header">
+            <h1>IIVKIS</h1>
+            <p class="text-muted mb-0">Intelligent IT Vendor Knowledge Integration System</p>
+        </div>
+        <div class="chat-messages" id="chat-messages">
+            <!-- Messages will be appended here by JavaScript -->
+        </div>
+        <div class="chat-input">
+            <form id="chat-form" class="d-flex w-100">
+                <input type="text" id="message-input" class="form-control" placeholder="Ask a question like 'Show Cisco ASA bug vulnerabilities...'" autocomplete="off">
+                <button type="submit" class="btn btn-primary">Send</button>
+            </form>
+        </div>
     </div>
-  </main>
-  <footer>
-    Page updated: <?= htmlspecialchars($now) ?> (UTC)
-  </footer>
+
+    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/js/bootstrap.bundle.min.js"></script>
+    <script src="assets/js/main.js?v=<?php echo time(); ?>"></script>
 </body>
-</html>
+</html>
\ No newline at end of file