Upload style.css

static/css/style.css

@@ -1,1073 +1,60 @@
-/**
- * File: static/css/style.css
- * Description: Stylesheet for the Mariam AI Chatbot Web Application.
- * Version: Enhanced with PWA support and improved responsiveness.
- */
-
-/* PWA Specific Styles */
-@media (display-mode: standalone) {
-    /* Adjustments for standalone mode (when installed as PWA) */
-    body {
-        /* Add safe area insets for mobile devices */
-        padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
-        /* Better touch handling */
-        touch-action: manipulation;
-    }
-    
-    /* Hide browser UI when installed as PWA */
-    .top-bar {
-        padding-top: max(12px, env(safe-area-inset-top));
-    }
-    
-    /* Ensure content doesn't get hidden beneath the bottom nav bar on iOS */
-    .input-area {
-        padding-bottom: env(safe-area-inset-bottom);
-    }
-}
-
-/* Offline indicator for PWA */
-.offline-indicator {
-    position: fixed;
-    top: 0;
-    left: 0;
-    right: 0;
-    background-color: #FFC107;
-    color: #212121;
-    text-align: center;
-    padding: 8px;
-    font-size: 14px;
-    z-index: 9999;
-    display: none; /* Hidden by default, shown via JS when offline */
-}
-
-.offline-indicator.visible {
-    display: block;
-}
-
-/* Base Styles */
-* {
-    margin: 0;
-    padding: 0;
-    box-sizing: border-box;
-}
-
-html {
-    height: 100%; /* Ensure html takes full height */
-}
+/* Custom styling for the application */
 
 body {
-    font-family: 'Inter', sans-serif;
-    background-color: #FFFFFF; /* Base background */
-    color: #212121;
-    height: 100%; /* Take full height from html */
-    overflow-x: hidden; /* Prevent horizontal scroll */
-    overflow-y: hidden; /* Prevent body from scrolling itself */
-    margin: 0; /* Remove default body margins */
-}
-
-/* App Container - Main flex container */
-.app-container {
-    display: flex;
-    height: 100%;
-    width: 100%;
-    position: relative; /* For absolute positioning of side nav on mobile */
-    overflow: hidden; /* Contain side nav */
-}
-
-/* Side Navigation Bar */
-.side-nav {
-    width: 280px;
-    height: 100%;
-    background-color: #FFFFFF;
-    border-right: 1px solid #EEEEEE;
-    display: flex;
-    flex-direction: column;
-    position: absolute; /* Mobile first: hidden off-screen */
-    top: 0;
-    left: -280px;
-    transition: left 0.3s ease;
-    z-index: 1000;
-    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
-    flex-shrink: 0; /* Prevent shrinking */
-}
-
-.side-nav.active {
-    left: 0; /* Slide in when active */
-}
-
-.side-nav-header {
-    display: flex;
-    align-items: center;
-    padding: 16px;
-    border-bottom: 1px solid #EEEEEE;
-    position: relative; /* For close button positioning */
-    flex-shrink: 0; /* Prevent header shrinking */
-}
-
-.side-nav-header .logo {
-    display: flex;
-    align-items: center;
-    justify-content: center;
-    width: 36px;
-    height: 36px;
-    background-color: #E3F2FD;
-    border-radius: 50%;
-    margin-right: 12px;
-    color: #2196F3;
-    flex-shrink: 0;
-}
-
-.side-nav-header h1 {
-    font-size: 20px;
-    font-weight: 600;
-    color: #424242;
-    margin: 0;
-    white-space: nowrap;
-    overflow: hidden;
-    text-overflow: ellipsis;
-}
-
-.close-button {
-    position: absolute;
-    right: 12px;
-    top: 50%;
-    transform: translateY(-50%);
-    background-color: transparent;
-    color: #9E9E9E;
-    border: none;
-    width: 32px;
-    height: 32px;
-    border-radius: 50%;
-    display: flex;
-    align-items: center;
-    justify-content: center;
-    cursor: pointer;
-    transition: all 0.2s ease;
-    flex-shrink: 0;
-}
-
-.close-button:hover {
-    background-color: #F5F5F5;
-    color: #757575;
-}
-
-.side-nav-section {
-    flex: 1; /* Take remaining vertical space */
-    overflow-y: auto; /* Allow scrolling if history is long */
-    padding: 16px 0;
-    border-bottom: 1px solid #EEEEEE;
+    min-height: 100vh;
     display: flex;
     flex-direction: column;
 }
 
-.section-header {
-    display: flex;
-    justify-content: space-between;
-    align-items: center;
-    padding: 0 16px 12px;
-    flex-shrink: 0; /* Prevent shrinking */
-}
-
-.section-header h3 {
-    font-size: 16px;
-    font-weight: 600;
-    color: #424242;
-    margin: 0;
-}
-
-.action-button-small {
-    background-color: transparent;
-    color: #2196F3;
-    border: 1px solid #2196F3;
-    border-radius: 4px;
-    width: 32px;
-    height: 32px;
-    display: flex;
-    align-items: center;
-    justify-content: center;
-    cursor: pointer;
-    transition: all 0.2s ease;
-    flex-shrink: 0;
-}
-
-.action-button-small:hover {
-    background-color: #E3F2FD;
-}
-
-.history-list {
-    /* max-height: 100%; Removed, parent (.side-nav-section) handles overflow */
-    overflow-y: auto; /* Allows scrolling within this specific list if needed */
-    flex-grow: 1; /* Allows the list to grow */
-}
-
-.chat-history-item {
-    padding: 12px 16px;
-    cursor: pointer;
-    display: flex;
-    align-items: center;
-    transition: background-color 0.2s ease;
-    border-radius: 8px;
-    margin: 0 8px 8px;
-}
-
-.chat-history-item:hover {
-    background-color: #F5F5F5;
-}
-
-.chat-history-item .icon {
-    margin-right: 12px;
-    color: #757575;
-    flex-shrink: 0;
-}
-
-.chat-history-item .details {
+.container {
     flex: 1;
-    overflow: hidden; /* Prevent text overflow issues */
-}
-
-.chat-history-item .timestamp {
-    font-size: 12px;
-    color: #9E9E9E;
-    margin-top: 4px;
-    white-space: nowrap;
-    overflow: hidden;
-    text-overflow: ellipsis;
-}
-
-.empty-state {
-    padding: 24px 16px;
-    text-align: center;
-    color: #9E9E9E;
-    font-size: 14px;
-}
-
-.side-nav-footer {
-    padding: 16px;
-    display: flex;
-    flex-direction: column;
-    gap: 8px;
-    flex-shrink: 0; /* Prevent shrinking */
-    border-top: 1px solid #EEEEEE; /* Separator */
-}
-
-.nav-button {
-    display: flex;
-    align-items: center;
-    padding: 10px 16px;
-    background-color: transparent;
-    color: #616161;
-    border: none;
-    border-radius: 8px;
-    cursor: pointer;
-    transition: all 0.2s ease;
-    font-size: 14px;
-    text-align: left;
-}
-
-.nav-button i {
-    margin-right: 12px;
-    font-size: 16px;
-    flex-shrink: 0;
-}
-
-.nav-button:hover {
-    background-color: #F5F5F5;
-}
-
-.nav-button#clearButtonNav:hover {
-    color: #F44336;
-}
-
-/* Main Content Area */
-.main-content {
-    flex: 1; /* Takes remaining horizontal space */
-    display: flex;
-    flex-direction: column; /* Stack top-bar and chat-container */
-    height: 100%; /* Crucial for nested flex children height */
-    overflow: hidden; /* Prevent main content from overflowing */
-    position: relative; /* Keep for nav transition */
-    left: 0;
-    transition: left 0.3s ease;
-}
-
-/* Apply shift when nav is open on mobile/tablet */
-.main-content.nav-open {
-    /* This selector might need adjustment based on how 'nav-open' is applied */
-    /* Typically applied on body or app-container in JS */
-}
-
-@media (max-width: 991px) {
-    .main-content.nav-open {
-         left: 280px;
-    }
-}
-
-
-/* Top Bar */
-.top-bar {
-    display: flex;
-    justify-content: space-between;
-    align-items: center;
-    padding: 12px 16px;
-    background-color: #2196F3;
-    color: white;
-    height: 60px; /* Fixed height */
-    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
-    z-index: 10;
-    flex-shrink: 0; /* Prevent shrinking */
-}
-
-.top-bar-left {
-    display: flex;
-    align-items: center;
-}
-
-.menu-button {
-    background-color: transparent;
-    color: white;
-    border: none;
-    width: 42px;
-    height: 42px;
-    border-radius: 50%;
-    display: flex; /* Changed to flex for desktop */
-    align-items: center;
-    justify-content: center;
-    cursor: pointer;
-    margin-right: 16px;
-    font-size: 24px;
-    transition: background-color 0.2s ease;
-}
-
-.menu-button:hover {
-    background-color: rgba(255, 255, 255, 0.1);
-}
-
-.top-bar h1 {
-    font-size: 20px;
-    font-weight: 500;
-    margin: 0;
-    color: white;
-    white-space: nowrap;
-}
-
-.top-bar-right {
-    display: flex;
-    align-items: center;
-}
-
-.icon-button {
-    background-color: transparent;
-    color: white;
-    border: none;
-    width: 40px;
-    height: 40px;
-    border-radius: 50%;
-    display: flex;
-    align-items: center;
-    justify-content: center;
-    cursor: pointer;
-    transition: background-color 0.2s ease;
-}
-
-.icon-button:hover {
-    background-color: rgba(255, 255, 255, 0.1);
-}
-
-/* Chat Container - Takes remaining space below top-bar */
-.chat-container {
-    display: flex;
-    flex-direction: column; /* Stack chat-window and input-area */
-    flex: 1; /* Crucial: takes remaining vertical space in main-content */
-    overflow: hidden; /* Contains children */
-    background-color: #FAFAFA;
-    /* height: calc(100% - 60px); Removed, flex: 1 handles this */
-}
-
-/* Scrollable Chat Window */
-.chat-window {
-    flex: 1; /* Crucial: takes remaining space IN chat-container */
-    overflow-y: auto; /* Enables vertical scrolling for content */
-    padding: 16px;
-    scrollbar-width: thin; /* Firefox scrollbar styling */
-    scrollbar-color: #E0E0E0 #FAFAFA; /* Firefox scrollbar styling */
-    -webkit-overflow-scrolling: touch; /* Smooth scrolling on iOS */
-}
-
-/* Webkit scrollbar styling */
-.chat-window::-webkit-scrollbar {
-    width: 6px;
-}
-
-.chat-window::-webkit-scrollbar-track {
-    background: #FAFAFA;
-}
-
-.chat-window::-webkit-scrollbar-thumb {
-    background-color: #E0E0E0;
-    border-radius: 10px;
-}
-
-/* Welcome Container with Suggestion Bubbles */
-.welcome-container {
-    display: flex;
-    flex-direction: column;
-    align-items: center;
-    justify-content: center;
-    height: 100%; /* Tries to fill the chat-window initially */
-    padding: 24px;
-    text-align: center;
-}
-
-/* Hide welcome if messages exist (handled by JS) */
-.welcome-container.hidden {
-    display: none;
-}
-
-.welcome-logo {
-    display: flex;
-    align-items: center;
-    justify-content: center;
-    width: 64px;
-    height: 64px;
-    background-color: #E3F2FD;
-    border-radius: 50%;
-    margin-bottom: 24px;
-    color: #2196F3;
-    flex-shrink: 0;
-}
-
-.welcome-logo i {
-    font-size: 32px;
-}
-
-.welcome-header h2 {
-    font-size: 28px;
-    font-weight: 600;
-    color: #212121;
-    margin-bottom: 12px;
-}
-
-.welcome-subtitle {
-    font-size: 16px;
-    color: #757575;
-    margin-bottom: 32px;
-}
-
-.suggestion-bubbles {
-    display: flex;
-    flex-direction: column;
-    gap: 16px;
-    max-width: 500px;
-    width: 100%;
-}
-
-.suggestion-bubble {
-    display: flex;
-    align-items: center;
-    padding: 16px;
-    background-color: #F5F5F5;
-    border-radius: 12px;
-    cursor: pointer;
-    transition: all 0.2s ease;
-    text-align: left;
-}
-
-.suggestion-bubble i {
-    font-size: 20px;
-    color: #2196F3;
-    margin-right: 16px;
-    flex-shrink: 0;
-}
-
-.suggestion-bubble span {
-    font-size: 15px;
-    color: #424242;
-}
-
-.suggestion-bubble:hover {
-    background-color: #E3F2FD;
-    transform: translateY(-2px);
-    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.05);
-}
-
-
-/* Input Area Container */
-.input-area {
-    border-top: 1px solid #EEEEEE;
-    background-color: #FFFFFF;
-    flex-shrink: 0; /* Prevent shrinking */
-    /* Removed position:sticky from mobile - handled by flex layout */
-    box-shadow: 0 -2px 5px rgba(0, 0, 0, 0.05); /* Keep shadow for visual separation */
-}
-
-/* Image Preview Area */
-.image-preview-area {
-    padding: 8px 16px;
-    background-color: #F8F9FA;
-    border-bottom: 1px solid #EEEEEE;
-    max-height: 130px; /* Limit height */
-    overflow-y: auto; /* Allow scroll if many images */
-}
-
-.image-preview-area.hidden {
-    display: none;
 }
 
-.image-preview-list {
-    display: flex;
-    flex-wrap: wrap; /* Wrap images */
-    gap: 10px;
-    padding: 5px 0;
-}
-
-.image-preview-container {
-    position: relative;
-    display: inline-block;
-    width: 100px;
-    height: 100px;
-    border-radius: 8px;
-    overflow: hidden;
-    border: 1px solid #EEEEEE;
-    flex-shrink: 0;
-}
-
-.image-preview-container img {
-    width: 100%;
-    height: 100%;
-    display: block;
-    object-fit: cover;
-}
-
-.remove-image-button {
-    position: absolute;
-    top: 4px;
-    right: 4px;
-    background-color: rgba(0, 0, 0, 0.5);
-    color: white;
-    border: none;
-    border-radius: 50%;
-    width: 24px;
-    height: 24px;
-    display: flex;
-    align-items: center;
-    justify-content: center;
-    cursor: pointer;
-    transition: background-color 0.2s ease;
-    z-index: 1; /* Above image */
-}
-
-.remove-image-button:hover {
-    background-color: rgba(0, 0, 0, 0.7);
-}
-
-/* Message Containers */
-.message-container {
-    display: flex;
-    margin: 12px 0;
-    width: 100%; /* Ensure it takes full width for alignment */
-}
-
-.message-container.user {
-    justify-content: flex-end; /* Align user messages to the right */
-}
-
-.message-container.bot {
-    justify-content: flex-start; /* Align bot messages to the left */
-}
-
-/* Message Bubbles */
-.message-bubble {
-    max-width: 80%; /* Limit bubble width */
-    padding: 14px 18px;
-    border-radius: 18px;
-    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
-    word-wrap: break-word; /* Allow long words to break */
-    overflow-wrap: break-word; /* Better word breaking */
-    position: relative; /* For absolute positioning of action buttons */
-}
-
-.message-container.user .message-bubble {
-    background-color: #E3F2FD; /* Light blue for user */
-    border-top-right-radius: 4px; /* Flat corner for speech bubble effect */
-    color: #1E4A72; /* Darker text for contrast */
-}
-
-.message-container.bot .message-bubble {
-    background-color: #FFFFFF; /* White for bot */
-    border-top-left-radius: 4px; /* Flat corner */
-    border: 1px solid #EEEEEE; /* Subtle border */
-    color: #212121; /* Default text color */
-}
-
-/* Message Text and Images */
-.message-bubble p {
-    margin: 0;
-    line-height: 1.5;
-    font-size: 15px;
-    white-space: pre-wrap; /* Preserve whitespace and newlines */
-}
-
-.message-bubble .image-container {
-    margin-bottom: 8px;
-}
-
-.message-bubble .chat-image {
-    max-width: 100%;
-    border-radius: 8px;
-    margin-bottom: 8px;
-    max-height: 300px; /* Limit image height */
-    object-fit: contain; /* Prevent distortion */
-    display: block; /* Ensure it behaves like a block */
-}
-
-/* Markdown Styling */
-.message-bubble ul,
-.message-bubble ol {
-    margin-left: 25px; /* Indent lists */
-    margin-top: 8px;
-    margin-bottom: 8px;
-    padding-left: 0; /* Reset default padding */
-}
-
-.message-bubble li {
-    margin-bottom: 4px;
-}
-
-.message-bubble h1,
-.message-bubble h2,
-.message-bubble h3,
-.message-bubble h4,
-.message-bubble h5,
-.message-bubble h6 {
-    margin-top: 16px;
-    margin-bottom: 8px;
-    font-weight: 600;
-    line-height: 1.3;
-}
-
-.message-bubble code:not(pre > code) { /* Inline code */
-    background-color: #f0f0f0; /* Slightly different background */
-    padding: 2px 5px;
-    border-radius: 4px;
-    font-family: 'Courier New', monospace;
-    font-size: 14px;
-    color: #C7254E; /* Pinkish color */
-    border: 1px solid #e0e0e0;
+/* Add a bit of spacing around the audio player */
+#audioPlayerContainer {
+    padding: 10px 0;
 }
 
-.message-bubble pre { /* Code blocks */
-    background-color: #2d2d2d; /* Dark background for code blocks */
-    color: #f8f8f2; /* Light text */
-    padding: 16px;
-    border-radius: 8px;
-    overflow-x: auto; /* Allow horizontal scroll for long lines */
-    margin: 12px 0;
-    font-family: 'Courier New', monospace;
-    font-size: 14px;
-    line-height: 1.4;
-    white-space: pre; /* Maintain whitespace */
-}
-
-.message-bubble pre code {
-    background-color: transparent; /* Code inside pre doesn't need its own bg */
-    padding: 0;
-    color: inherit; /* Inherit color from pre */
-    border: none;
-    font-size: inherit;
-    font-family: inherit;
-    display: block; /* Ensure it takes block space */
-    white-space: inherit; /* Inherit whitespace handling */
-}
-
-.message-bubble a {
-    color: #1976D2; /* Link color */
-    text-decoration: underline;
-}
-
-.message-bubble a:hover {
-    color: #1565C0;
-}
-
-.message-bubble table {
-    border-collapse: collapse;
+/* Make the audio player responsive */
+audio {
     width: 100%;
-    margin: 12px 0;
-    border: 1px solid #dddddd;
-}
-
-.message-bubble th,
-.message-bubble td {
-    border: 1px solid #dddddd;
-    padding: 10px;
-    text-align: left;
-}
-
-.message-bubble th {
-    background-color: #f9f9f9;
-    font-weight: 600;
-}
-
-.message-bubble blockquote {
-  border-left: 4px solid #ccc;
-  margin: 10px 0;
-  padding-left: 16px;
-  color: #666;
-}
-
-/* Error Message Styling */
-.message-container.error .message-bubble {
-    background-color: #FFEBEE; /* Light red */
-    border: 1px solid #FFCDD2;
-    color: #B71C1C; /* Dark red text */
-}
-
-.retry-button {
-    display: inline-block;
-    margin-top: 8px;
-    padding: 6px 12px;
-    background-color: #F44336;
-    color: white;
-    border: none;
-    border-radius: 4px;
-    cursor: pointer;
-    font-size: 14px;
-    transition: background-color 0.2s ease;
-}
-
-.retry-button:hover {
-    background-color: #D32F2F;
-}
-
-/* Message actions (copy button, etc.) */
-.message-actions {
-    position: absolute;
-    top: 8px;
-    right: 8px;
-    display: flex;
-    gap: 5px;
-    opacity: 0;
-    transition: opacity 0.2s ease;
-}
-
-.message-bubble:hover .message-actions {
-    opacity: 1;
-}
-
-.copy-button {
-    background-color: rgba(255, 255, 255, 0.8);
-    color: #616161;
-    border: none;
-    border-radius: 4px;
-    width: 28px;
-    height: 28px;
-    display: flex;
-    align-items: center;
-    justify-content: center;
-    cursor: pointer;
-    transition: all 0.2s ease;
-}
-
-.copy-button:hover {
-    background-color: #E3F2FD;
-    color: #2196F3;
-}
-
-/* Loading Animation */
-.message-bubble.loading {
-    display: flex; /* Use flex for alignment */
-    align-items: center;
-    justify-content: center; /* Center dots */
-    min-width: 60px; /* Ensure some width */
-    padding: 14px 18px; /* Match normal bubble padding */
-    background-color: #FFFFFF; /* Match bot background */
-    border: 1px solid #EEEEEE; /* Match bot border */
-    border-top-left-radius: 4px; /* Match bot radius */
-    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1); /* Match bubble shadow */
-}
-
-.dot-typing {
-    position: relative;
-    width: 6px;
-    height: 6px;
-    border-radius: 50%;
-    background-color: #9E9E9E;
-    color: #9E9E9E; /* For ::before/::after color */
-    animation: dotTyping 1.5s infinite linear;
-    animation-delay: 0.25s; /* Stagger start */
-}
-
-.dot-typing::before,
-.dot-typing::after {
-    content: '';
-    display: inline-block;
-    position: absolute;
-    top: 0;
-    width: 6px;
-    height: 6px;
-    border-radius: 50%;
-    background-color: #9E9E9E;
-    color: #9E9E9E;
-}
-
-.dot-typing::before {
-    left: -12px; /* Position left dot */
-    animation: dotTypingBefore 1.5s infinite linear;
-    animation-delay: 0s;
+    border-radius: 0.25rem;
 }
 
-.dot-typing::after {
-    left: 12px; /* Position right dot */
-    animation: dotTypingAfter 1.5s infinite linear;
-    animation-delay: 0.5s; /* Stagger start */
+/* Fade in animation for the audio card */
+@keyframes fadeIn {
+    0% { opacity: 0; transform: translateY(20px); }
+    100% { opacity: 1; transform: translateY(0); }
 }
 
-@keyframes dotTyping {
-    0%, 60%, 100% { transform: scale(1); opacity: 0.6; }
-    30% { transform: scale(1.3); opacity: 1; }
+.fade-in {
+    animation: fadeIn 0.5s ease forwards;
 }
 
-@keyframes dotTypingBefore {
-     0%, 60%, 100% { transform: scale(1); opacity: 0.6; }
-    30% { transform: scale(1.3); opacity: 1; }
+/* Style for the text area */
+#textInput {
+    resize: vertical;
+    min-height: 150px;
 }
 
-@keyframes dotTypingAfter {
-     0%, 60%, 100% { transform: scale(1); opacity: 0.6; }
-    30% { transform: scale(1.3); opacity: 1; }
+/* Little pulse effect for the loading spinner */
+@keyframes pulse {
+    0% { transform: scale(1); }
+    50% { transform: scale(1.1); }
+    100% { transform: scale(1); }
 }
 
-/* Input Bar at the bottom */
-.input-bar {
-    padding: 16px;
-    display: flex;
-    align-items: flex-end; /* Align items to bottom for multiline textarea */
-    background-color: #FFFFFF; /* Match area background */
-}
-
-.upload-button {
-    background-color: transparent;
-    color: #616161;
-    border: none;
-    border-radius: 50%;
-    width: 42px;
-    height: 42px;
-    display: flex;
-    align-items: center;
-    justify-content: center;
-    cursor: pointer;
-    transition: all 0.2s ease;
-    margin-right: 8px;
-    flex-shrink: 0;
-}
-
-.upload-button:hover {
-    background-color: #F5F5F5;
-    color: #2196F3;
-}
-
-.input-container {
-    flex: 1; /* Take remaining space */
-    display: flex;
-    align-items: flex-end; /* Align textarea and button */
-    background-color: #F5F5F5;
-    border-radius: 24px;
-    padding: 6px 8px 6px 16px; /* Adjusted padding */
-    transition: box-shadow 0.3s ease;
-    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
-    min-height: 48px; /* Minimum height */
-}
-
-.input-container:focus-within {
-    box-shadow: 0 0 0 2px #42A5F5; /* Focus outline */
-}
-
-/* Text Area */
-#userInput {
-    flex: 1; /* Take available space */
-    border: none;
-    background: transparent;
-    padding: 8px 0; /* Vertical padding */
-    max-height: 120px; /* Limit height before scroll */
-    resize: none; /* Disable manual resize */
-    font-family: inherit;
-    font-size: 15px;
-    line-height: 1.4; /* Better line spacing */
-    outline: none;
-    color: #212121;
-    overflow-y: auto; /* Allow scroll within textarea if needed */
-}
-
-#userInput::placeholder {
-    color: #9E9E9E;
-}
-
-/* Send Button */
-.send-button {
-    background-color: #2196F3;
-    color: white;
-    border: none;
-    border-radius: 50%;
-    width: 40px;
-    height: 40px;
-    display: flex;
-    align-items: center;
-    justify-content: center;
-    cursor: pointer;
-    transition: all 0.2s ease;
-    margin-left: 8px;
-    flex-shrink: 0; /* Prevent shrinking */
-}
-
-.send-button:hover {
-    background-color: #1976D2;
-    transform: scale(1.05);
-}
-
-.send-button:disabled {
-    background-color: #BDBDBD;
-    cursor: not-allowed;
-    transform: none;
-    opacity: 0.7;
-}
-
-/* Overlay when side nav is open on mobile */
-.overlay {
-    display: none;
-    position: fixed;
-    top: 0;
-    left: 0;
-    right: 0;
-    bottom: 0;
-    background-color: rgba(0, 0, 0, 0.5);
-    z-index: 999; /* Below side nav, above content */
-}
-
-.overlay.active {
-    display: block;
+.spinner-border {
+    animation: spinner-border 0.75s linear infinite, pulse 2s ease infinite;
 }
 
 /* Responsive adjustments */
-
-/* Desktop styles */
-@media (min-width: 992px) {
-    .side-nav {
-        position: relative; /* Static position in flex layout */
-        left: 0;
-        width: 280px;
-        box-shadow: none; /* No shadow needed if static */
-    }
-
-    .main-content {
-        /* width: calc(100% - 280px); Not needed with flex: 1 */
-        left: 0 !important; /* Ensure it's not shifted */
-    }
-
-    .menu-button {
-        display: none; /* Hide hamburger on desktop */
-    }
-
-    .overlay {
-        display: none !important; /* Never show overlay on desktop */
-    }
-}
-
-/* Tablet and Mobile styles */
-@media (max-width: 991px) {
-    /* Keep side nav absolute/hidden by default */
-    /* .main-content.nav-open style handles the shift */
-}
-
 @media (max-width: 768px) {
-    /* Small tablets and large phones */
-    .message-bubble {
-        max-width: 85%;
+    h1.display-4 {
+        font-size: 2.5rem;
     }
-
-    .suggestion-bubbles {
-        max-width: 100%;
-    }
-
-    .welcome-logo {
-        width: 56px;
-        height: 56px;
-    }
-
-    .welcome-logo i {
-        font-size: 28px;
-    }
-
-    .welcome-header h2 {
-        font-size: 24px;
+    
+    .lead {
+        font-size: 1.1rem;
     }
 }
-
-@media (max-width: 480px) {
-    /* Mobile phones */
-    .side-nav {
-        width: 85%; /* Make nav wider on small screens */
-    }
-
-    .message-bubble {
-        max-width: 90%;
-        padding: 12px 16px; /* Slightly smaller padding */
-    }
-
-    .chat-window {
-        padding: 12px; /* Less padding */
-    }
-
-    .input-bar {
-        padding: 12px 8px; /* Less padding */
-    }
-
-    .input-container {
-        padding: 6px 8px 6px 12px; /* Adjust padding */
-        min-height: 44px;
-    }
-
-    #userInput {
-        font-size: 14px;
-    }
-
-    .top-bar {
-        padding: 10px 12px;
-        height: 56px; /* Slightly shorter */
-    }
-
-    .top-bar h1 {
-        font-size: 18px;
-    }
-
-    .menu-button {
-        margin-right: 12px;
-    }
-
-    .welcome-header h2 {
-        font-size: 22px;
-    }
-
-    .welcome-subtitle {
-        font-size: 14px;
-    }
-
-    .suggestion-bubble {
-        padding: 12px;
-    }
-
-    .suggestion-bubble i {
-        font-size: 18px;
-        margin-right: 12px;
-    }
-
-    .suggestion-bubble span {
-        font-size: 14px;
-    }
-
-    /* Ensure welcome container content is centered but allows scroll */
-    .welcome-container {
-        justify-content: flex-start; /* Align to top */
-        padding-top: 40px; /* Add some top padding */
-        height: auto; /* Allow it to take content height */
-        min-height: 100%; /* Ensure it tries to fill if content is short */
-    }
-}