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style.css

@@ -1,76 +1,545 @@
+/* Reset and Base Styles */
 * {
-    box-sizing: border-box;
-    padding: 0;
     margin: 0;
-    font-family: sans-serif;
+    padding: 0;
+    box-sizing: border-box;
 }
 
-html,
-body {
-    height: 100%;
+:root {
+    --primary-color: #2563eb;
+    --primary-hover: #1d4ed8;
+    --secondary-color: #f1f5f9;
+    --accent-color: #3b82f6;
+    --text-primary: #1e293b;
+    --text-secondary: #64748b;
+    --background: #ffffff;
+    --background-secondary: #f8fafc;
+    --border-color: #e2e8f0;
+    --success-color: #10b981;
+    --error-color: #ef4444;
+    --warning-color: #f59e0b;
+    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
+    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
+    --border-radius: 8px;
+    --transition: all 0.2s ease-in-out;
 }
 
 body {
-    padding: 32px;
+    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
+    line-height: 1.6;
+    color: var(--text-primary);
+    background-color: var(--background-secondary);
+    min-height: 100vh;
 }
 
-body,
-#container {
+/* App Container */
+.app-container {
     display: flex;
     flex-direction: column;
-    justify-content: center;
+    min-height: 100vh;
+    max-width: 1200px;
+    margin: 0 auto;
+    background-color: var(--background);
+    box-shadow: var(--shadow-lg);
+}
+
+/* Header */
+.header {
+    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
+    color: white;
+    padding: 2rem 1.5rem;
+    text-align: center;
+}
+
+.header-content {
+    max-width: 800px;
+    margin: 0 auto;
+}
+
+.title {
+    font-size: 2.5rem;
+    font-weight: 700;
+    margin-bottom: 0.5rem;
+    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
+}
+
+.subtitle {
+    font-size: 1.1rem;
+    opacity: 0.9;
+    margin-bottom: 1rem;
+}
+
+.anycoder-link {
+    color: rgba(255, 255, 255, 0.9);
+    text-decoration: none;
+    font-size: 0.9rem;
+    padding: 0.5rem 1rem;
+    border: 1px solid rgba(255, 255, 255, 0.3);
+    border-radius: var(--border-radius);
+    transition: var(--transition);
+    display: inline-block;
+}
+
+.anycoder-link:hover {
+    background-color: rgba(255, 255, 255, 0.1);
+    border-color: rgba(255, 255, 255, 0.5);
+}
+
+/* Settings Panel */
+.settings-panel {
+    background-color: var(--background);
+    border-bottom: 1px solid var(--border-color);
+    padding: 1.5rem;
+}
+
+.settings-content {
+    display: grid;
+    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
+    gap: 1rem;
     align-items: center;
+    max-width: 800px;
+    margin: 0 auto;
 }
 
-#container {
-    position: relative;
-    gap: 0.4rem;
+.setting-group {
+    display: flex;
+    flex-direction: column;
+    gap: 0.5rem;
+}
 
-    width: 640px;
-    height: 640px;
-    max-width: 100%;
-    max-height: 100%;
+.setting-group label {
+    font-weight: 500;
+    font-size: 0.9rem;
+    color: var(--text-primary);
+}
+
+.device-select,
+.model-select {
+    padding: 0.75rem;
+    border: 1px solid var(--border-color);
+    border-radius: var(--border-radius);
+    font-size: 0.9rem;
+    background-color: var(--background);
+    color: var(--text-primary);
+    transition: var(--transition);
+}
 
-    border: 2px dashed #D1D5DB;
-    border-radius: 0.75rem;
-    overflow: hidden;
+.device-select:focus,
+.model-select:focus {
+    outline: none;
+    border-color: var(--primary-color);
+    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
+}
+
+.initialize-btn {
+    background-color: var(--primary-color);
+    color: white;
+    border: none;
+    padding: 0.75rem 1.5rem;
+    border-radius: var(--border-radius);
+    font-weight: 500;
     cursor: pointer;
-    margin: 1rem;
+    transition: var(--transition);
+    height: fit-content;
+    align-self: end;
+}
 
-    background-size: 100% 100%;
-    background-position: center;
-    background-repeat: no-repeat;
-    font-size: 18px;
+.initialize-btn:hover:not(:disabled) {
+    background-color: var(--primary-hover);
+    transform: translateY(-1px);
 }
 
-#upload {
-    display: none;
+.initialize-btn:disabled {
+    opacity: 0.6;
+    cursor: not-allowed;
+    transform: none;
+}
+
+/* Chat Container */
+.chat-container {
+    flex: 1;
+    display: flex;
+    flex-direction: column;
+    min-height: 0;
+}
+
+.chat-messages {
+    flex: 1;
+    padding: 1.5rem;
+    overflow-y: auto;
+    min-height: 400px;
+    max-height: 600px;
+}
+
+/* Message Styles */
+.message {
+    display: flex;
+    gap: 1rem;
+    margin-bottom: 1.5rem;
+    animation: fadeInUp 0.3s ease-out;
+}
+
+@keyframes fadeInUp {
+    from {
+        opacity: 0;
+        transform: translateY(10px);
+    }
+    to {
+        opacity: 1;
+        transform: translateY(0);
+    }
+}
+
+.message-avatar {
+    width: 40px;
+    height: 40px;
+    border-radius: 50%;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    font-size: 1.2rem;
+    flex-shrink: 0;
 }
 
-svg {
-    pointer-events: none;
+.user-message .message-avatar {
+    background-color: var(--secondary-color);
 }
 
-#example {
-    font-size: 14px;
-    text-decoration: underline;
+.assistant-message .message-avatar,
+.welcome-message .message-avatar {
+    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
+}
+
+.message-content {
+    flex: 1;
+    max-width: 70%;
+}
+
+.user-message .message-content {
+    margin-left: auto;
+    text-align: right;
+}
+
+.user-message .user-message,
+.assistant-message .assistant-message,
+.welcome-message .assistant-message {
+    display: inline-block;
+    padding: 0.75rem 1rem;
+    border-radius: var(--border-radius);
+    font-size: 0.95rem;
+    line-height: 1.5;
+    word-wrap: break-word;
+    max-width: 100%;
+}
+
+.user-message .user-message {
+    background-color: var(--primary-color);
+    color: white;
+    border-bottom-right-radius: 4px;
+}
+
+.assistant-message .assistant-message,
+.welcome-message .assistant-message {
+    background-color: var(--secondary-color);
+    color: var(--text-primary);
+    border-bottom-left-radius: 4px;
+}
+
+.welcome-message {
+    opacity: 0.8;
+    font-style: italic;
+}
+
+/* Input Area */
+.input-area {
+    border-top: 1px solid var(--border-color);
+    padding: 1.5rem;
+    background-color: var(--background);
+}
+
+.input-container {
+    display: flex;
+    gap: 1rem;
+    max-width: 800px;
+    margin: 0 auto;
+}
+
+.message-input {
+    flex: 1;
+    padding: 1rem;
+    border: 1px solid var(--border-color);
+    border-radius: var(--border-radius);
+    font-size: 1rem;
+    resize: none;
+    font-family: inherit;
+    line-height: 1.5;
+    transition: var(--transition);
+    min-height: 50px;
+    max-height: 120px;
+}
+
+.message-input:focus {
+    outline: none;
+    border-color: var(--primary-color);
+    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
+}
+
+.message-input:disabled {
+    background-color: var(--background-secondary);
+    color: var(--text-secondary);
+    cursor: not-allowed;
+}
+
+.send-btn {
+    width: 50px;
+    height: 50px;
+    border: none;
+    border-radius: var(--border-radius);
+    background-color: var(--primary-color);
+    color: white;
     cursor: pointer;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    transition: var(--transition);
+    flex-shrink: 0;
 }
 
-#example:hover {
-    color: #2563EB;
+.send-btn:hover:not(:disabled) {
+    background-color: var(--primary-hover);
+    transform: scale(1.05);
 }
 
-.bounding-box {
-    position: absolute;
-    box-sizing: border-box;
-    border: solid 2px;
+.send-btn:disabled {
+    opacity: 0.5;
+    cursor: not-allowed;
+    transform: none;
+}
+
+.send-icon {
+    font-size: 1.2rem;
+    transform: rotate(45deg);
 }
 
-.bounding-box-label {
+.input-status {
+    margin-top: 0.75rem;
+    text-align: center;
+}
+
+.status-text {
+    font-size: 0.85rem;
+    padding: 0.25rem 0.75rem;
+    border-radius: 12px;
+    display: inline-block;
+    transition: var(--transition);
+}
+
+.status-text.ready {
+    background-color: rgba(16, 185, 129, 0.1);
+    color: var(--success-color);
+}
+
+.status-text.loading,
+.status-text.generating {
+    background-color: rgba(59, 130, 246, 0.1);
+    color: var(--accent-color);
+}
+
+.status-text.error {
+    background-color: rgba(239, 68, 68, 0.1);
+    color: var(--error-color);
+}
+
+/* Loading Overlay */
+.loading-overlay {
+    position: fixed;
+    top: 0;
+    left: 0;
+    right: 0;
+    bottom: 0;
+    background-color: rgba(0, 0, 0, 0.7);
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    justify-content: center;
+    z-index: 1000;
+    backdrop-filter: blur(4px);
+}
+
+.loading-overlay.hidden {
+    display: none;
+}
+
+.loading-spinner {
+    width: 50px;
+    height: 50px;
+    border: 4px solid rgba(255, 255, 255, 0.3);
+    border-top: 4px solid white;
+    border-radius: 50%;
+    animation: spin 1s linear infinite;
+    margin-bottom: 1rem;
+}
+
+@keyframes spin {
+    0% { transform: rotate(0deg); }
+    100% { transform: rotate(360deg); }
+}
+
+.loading-text {
+    text-align: center;
     color: white;
-    position: absolute;
-    font-size: 12px;
-    margin: -16px 0 0 -2px;
-    padding: 1px;
-}
+}
+
+.loading-text p {
+    margin-bottom: 0.5rem;
+}
+
+.loading-tips {
+    font-size: 0.9rem;
+    opacity: 0.8;
+}
+
+/* Responsive Design */
+@media (max-width: 768px) {
+    .app-container {
+        margin: 0;
+        min-height: 100vh;
+    }
+    
+    .header {
+        padding: 1.5rem 1rem;
+    }
+    
+    .title {
+        font-size: 2rem;
+    }
+    
+    .settings-panel {
+        padding: 1rem;
+    }
+    
+    .settings-content {
+        grid-template-columns: 1fr;
+        gap: 1rem;
+    }
+    
+    .chat-messages {
+        padding: 1rem;
+        min-height: 300px;
+    }
+    
+    .message {
+        margin-bottom: 1rem;
+    }
+    
+    .message-content {
+        max-width: 85%;
+    }
+    
+    .input-area {
+        padding: 1rem;
+    }
+    
+    .input-container {
+        flex-direction: column;
+        gap: 0.75rem;
+    }
+    
+    .send-btn {
+        width: 100%;
+        height: 45px;
+    }
+}
+
+@media (max-width: 480px) {
+    .title {
+        font-size: 1.75rem;
+    }
+    
+    .subtitle {
+        font-size: 1rem;
+    }
+    
+    .message-avatar {
+        width: 35px;
+        height: 35px;
+        font-size: 1rem;
+    }
+    
+    .message-content {
+        max-width: 90%;
+    }
+    
+    .user-message .user-message,
+    .assistant-message .assistant-message {
+        padding: 0.6rem 0.8rem;
+        font-size: 0.9rem;
+    }
+}
+
+/* Scrollbar Styling */
+.chat-messages::-webkit-scrollbar {
+    width: 6px;
+}
+
+.chat-messages::-webkit-scrollbar-track {
+    background: var(--background-secondary);
+}
+
+.chat-messages::-webkit-scrollbar-thumb {
+    background: var(--border-color);
+    border-radius: 3px;
+}
+
+.chat-messages::-webkit-scrollbar-thumb:hover {
+    background: var(--text-secondary);
+}
+
+/* Accessibility */
+@media (prefers-reduced-motion: reduce) {
+    * {
+        animation-duration: 0.01ms !important;
+        animation-iteration-count: 1 !important;
+        transition-duration: 0.01ms !important;
+    }
+}
+
+/* Focus styles for keyboard navigation */
+button:focus,
+select:focus,
+textarea:focus {
+    outline: 2px solid var(--primary-color);
+    outline-offset: 2px;
+}
+
+/* High contrast mode support */
+@media (prefers-contrast: high) {
+    :root {
+        --border-color: #000000;
+        --text-secondary: #000000;
+    }
+}
+
+This chatbot application includes:
+
+**Features:**
+- Modern, responsive design that works on all devices
+- Real-time streaming responses using TextStreamer
+- Multiple model support (Gemma 3 270M, Gemma 2 2B, Llama 3.2 1B)
+- CPU/GPU toggle with WebGPU support detection
+- Professional UI with smooth animations
+- Error handling and loading states
+- Accessibility features (keyboard navigation, screen reader support)
+- Chat history with system prompts
+- Auto-resizing text input
+- Mobile-optimized interface
+
+**Key Technical Features:**
+- Uses the exact transformers.js import and pipeline setup you specified
+- Implements TextStreamer for real-time response streaming
+- Handles multiple ONNX models for different performance needs
+- Proper error handling and user feedback
+- Responsive design that adapts to all screen sizes
+- Professional styling with CSS custom properties
+
+The application initializes models on-demand, streams responses in real-time, and provides a clean chat interface similar to modern AI chatbots.