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style.css

@@ -1,76 +1,398 @@
 * {
-    box-sizing: border-box;
-    padding: 0;
-    margin: 0;
-    font-family: sans-serif;
+margin: 0;
+padding: 0;
+box-sizing: border-box;
 }
 
-html,
-body {
-    height: 100%;
+:root {
+--primary-color: #007AFF;
+--primary-hover: #0056CC;
+--background: #F2F2F7;
+--surface: #FFFFFF;
+--text-primary: #000000;
+--text-secondary: #8E8E93;
+--border-color: #C6C6C8;
+--user-message: #007AFF;
+--ai-message: #E5E5EA;
+--shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
+--shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
+--shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
 }
 
 body {
-    padding: 32px;
+font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
+background: var(--background);
+color: var(--text-primary);
+height: 100vh;
+overflow: hidden;
+}
+
+.app-container {
+display: flex;
+flex-direction: column;
+height: 100vh;
+max-width: 900px;
+margin: 0 auto;
+background: var(--surface);
+box-shadow: var(--shadow-lg);
+}
+
+/* Header */
+.header {
+background: var(--surface);
+border-bottom: 1px solid var(--border-color);
+padding: 16px 20px;
+backdrop-filter: blur(20px);
+-webkit-backdrop-filter: blur(20px);
+}
+
+.header-content {
+display: flex;
+justify-content: space-between;
+align-items: center;
+}
+
+.header-left {
+display: flex;
+align-items: center;
+gap: 12px;
+}
+
+.ai-icon {
+width: 40px;
+height: 40px;
+background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+border-radius: 12px;
+display: flex;
+align-items: center;
+justify-content: center;
+color: white;
+}
+
+.header-text h1 {
+font-size: 18px;
+font-weight: 600;
+margin-bottom: 2px;
+}
+
+.status-text {
+font-size: 13px;
+color: var(--text-secondary);
+font-weight: 400;
+}
+
+.built-with {
+font-size: 12px;
+color: var(--text-secondary);
+text-decoration: none;
+padding: 6px 12px;
+border-radius: 20px;
+background: var(--background);
+transition: all 0.3s ease;
+}
+
+.built-with:hover {
+background: var(--primary-color);
+color: white;
+transform: translateY(-1px);
+}
+
+/* Chat Container */
+.chat-container {
+flex: 1;
+overflow-y: auto;
+padding: 20px;
+background: var(--background);
+}
+
+.chat-messages {
+display: flex;
+flex-direction: column;
+gap: 16px;
 }
 
-body,
-#container {
-    display: flex;
-    flex-direction: column;
-    justify-content: center;
-    align-items: center;
+/* Messages */
+.welcome-message,
+.message {
+display: flex;
+gap: 12px;
+animation: fadeInUp 0.3s ease;
 }
 
-#container {
-    position: relative;
-    gap: 0.4rem;
+@keyframes fadeInUp {
+from {
+opacity: 0;
+transform: translateY(10px);
+}
+to {
+opacity: 1;
+transform: translateY(0);
+}
+}
+
+.ai-avatar {
+width: 32px;
+height: 32px;
+background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+border-radius: 50%;
+display: flex;
+align-items: center;
+justify-content: center;
+color: white;
+flex-shrink: 0;
+}
+
+.user-avatar {
+width: 32px;
+height: 32px;
+background: var(--user-message);
+border-radius: 50%;
+display: flex;
+align-items: center;
+justify-content: center;
+color: white;
+flex-shrink: 0;
+}
+
+.message-content {
+flex: 1;
+max-width: 70%;
+}
 
-    width: 640px;
-    height: 640px;
-    max-width: 100%;
-    max-height: 100%;
+.message-bubble {
+padding: 12px 16px;
+border-radius: 18px;
+background: var(--ai-message);
+color: var(--text-primary);
+font-size: 15px;
+line-height: 1.4;
+word-wrap: break-word;
+position: relative;
+box-shadow: var(--shadow-sm);
+}
 
-    border: 2px dashed #D1D5DB;
-    border-radius: 0.75rem;
-    overflow: hidden;
-    cursor: pointer;
-    margin: 1rem;
+.message.user .message-bubble {
+background: var(--user-message);
+color: white;
+margin-left: auto;
+}
 
-    background-size: 100% 100%;
-    background-position: center;
-    background-repeat: no-repeat;
-    font-size: 18px;
+.message.ai .message-bubble {
+background: var(--surface);
 }
 
-#upload {
-    display: none;
+.message-time {
+font-size: 11px;
+color: var(--text-secondary);
+margin-top: 4px;
+padding: 0 4px;
+}
+
+/* Typing Indicator */
+.typing-indicator {
+display: flex;
+gap: 4px;
+padding: 12px 16px;
+}
+
+.typing-dot {
+width: 8px;
+height: 8px;
+background: var(--text-secondary);
+border-radius: 50%;
+animation: typing 1.4s infinite;
+}
+
+.typing-dot:nth-child(2) {
+animation-delay: 0.2s;
+}
+
+.typing-dot:nth-child(3) {
+animation-delay: 0.4s;
+}
+
+@keyframes typing {
+0%, 60%, 100% {
+transform: translateY(0);
+opacity: 0.5;
+}
+30% {
+transform: translateY(-10px);
+opacity: 1;
+}
 }
 
-svg {
-    pointer-events: none;
+/* Loading Indicator */
+.loading-indicator {
+display: flex;
+flex-direction: column;
+align-items: center;
+gap: 12px;
+padding: 40px;
+background: var(--surface);
+border-radius: 16px;
+margin: 20px;
+box-shadow: var(--shadow-md);
+}
+
+.loading-indicator.hidden {
+display: none;
+}
+
+.loading-spinner {
+width: 32px;
+height: 32px;
+border: 3px solid var(--border-color);
+border-top-color: var(--primary-color);
+border-radius: 50%;
+animation: spin 1s linear infinite;
+}
+
+@keyframes spin {
+to { transform: rotate(360deg); }
+}
+
+.progress-bar {
+width: 200px;
+height: 4px;
+background: var(--border-color);
+border-radius: 2px;
+overflow: hidden;
+}
+
+.progress-fill {
+height: 100%;
+background: var(--primary-color);
+width: 0%;
+transition: width 0.3s ease;
+}
+
+.progress-text {
+font-size: 14px;
+color: var(--text-secondary);
+font-weight: 500;
+}
+
+/* Input Area */
+.input-area {
+background: var(--surface);
+border-top: 1px solid var(--border-color);
+padding: 16px 20px;
+}
+
+.input-container {
+display: flex;
+gap: 12px;
+align-items: flex-end;
+background: var(--background);
+border-radius: 24px;
+padding: 8px 8px 8px 16px;
+border: 1px solid var(--border-color);
+transition: all 0.3s ease;
+}
+
+.input-container:focus-within {
+border-color: var(--primary-color);
+box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
+}
+
+.message-input {
+flex: 1;
+border: none;
+background: transparent;
+font-size: 15px;
+font-family: inherit;
+resize: none;
+outline: none;
+max-height: 120px;
+line-height: 1.4;
+padding: 8px 0;
+}
+
+.message-input::placeholder {
+color: var(--text-secondary);
+}
+
+.message-input:disabled {
+opacity: 0.5;
+cursor: not-allowed;
+}
+
+.send-button {
+width: 36px;
+height: 36px;
+border-radius: 50%;
+border: none;
+background: var(--primary-color);
+color: white;
+cursor: pointer;
+display: flex;
+align-items: center;
+justify-content: center;
+transition: all 0.3s ease;
+}
+
+.send-button:hover:not(:disabled) {
+background: var(--primary-hover);
+transform: scale(1.05);
+}
+
+.send-button:disabled {
+background: var(--border-color);
+cursor: not-allowed;
+transform: none;
+}
+
+.input-footer {
+display: flex;
+justify-content: space-between;
+margin-top: 8px;
+padding: 0 8px;
+}
+
+.input-footer small {
+font-size: 12px;
+color: var(--text-secondary);
+}
+
+/* Responsive Design */
+@media (max-width: 768px) {
+.app-container {
+max-width: 100%;
+box-shadow: none;
+}
+
+.message-content {
+max-width: 85%;
+}
+
+.header {
+padding: 12px 16px;
+}
+
+.chat-container {
+padding: 16px;
+}
+
+.input-area {
+padding: 12px 16px;
+}
 }
 
-#example {
-    font-size: 14px;
-    text-decoration: underline;
-    cursor: pointer;
+/* Scrollbar Styling */
+.chat-container::-webkit-scrollbar {
+width: 6px;
 }
 
-#example:hover {
-    color: #2563EB;
+.chat-container::-webkit-scrollbar-track {
+background: transparent;
 }
 
-.bounding-box {
-    position: absolute;
-    box-sizing: border-box;
-    border: solid 2px;
+.chat-container::-webkit-scrollbar-thumb {
+background: var(--border-color);
+border-radius: 3px;
 }
 
-.bounding-box-label {
-    color: white;
-    position: absolute;
-    font-size: 12px;
-    margin: -16px 0 0 -2px;
-    padding: 1px;
+.chat-container::-webkit-scrollbar-thumb:hover {
+background: var(--text-secondary);
 }