.chat-input-container{padding:20px;background:#fff;border-top:1px solid #e5e7eb}.chat-input-form{max-width:900px;margin:0 auto}.input-wrapper{display:flex;gap:12px;align-items:center;padding:16px;background:#f9fafb;border:2px solid #e5e7eb;border-radius:16px;transition:all .2s}.input-wrapper:focus-within{border-color:#667eea;background:#fff;box-shadow:0 0 0 3px #667eea1a}.chat-textarea{flex:1;border:none;outline:none;background:transparent;font-size:16px;line-height:1.5;resize:none;max-height:200px;font-family:inherit;color:#1f2937}.chat-textarea::placeholder{color:#9ca3af}.chat-textarea:disabled{opacity:.5;cursor:not-allowed}.send-button{width:44px;height:44px;border:none;border-radius:12px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s;flex-shrink:0}.send-button:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 8px 16px #667eea4d}.send-button:active:not(:disabled){transform:translateY(0)}.send-button:disabled{opacity:.5;cursor:not-allowed}.send-button svg{width:20px;height:20px}.input-hint{margin-top:8px;font-size:12px;color:#9ca3af;text-align:center}@media (max-width: 768px){.chat-input-container{padding:15px}.input-wrapper{padding:12px}.chat-textarea{font-size:14px}.send-button{width:40px;height:40px}.send-button svg{width:18px;height:18px}}.app{display:flex;height:100vh;background:#f5f7fa}.main-content{flex:1;display:flex;flex-direction:column;background:#fff}.header{padding:20px 60px;text-align:center;background:linear-gradient(135deg,#667eea,#764ba2)}.header h1{font-size:32px;font-weight:600;margin:0}.header-text{color:#fff}.header-highlight{color:#fef3c7}.chat-content{flex:1;padding:30px 60px;overflow-y:auto;background:#f9fafb}.messages-container{max-width:760px;margin:0 auto;display:flex;flex-direction:column;gap:16px}.empty-state{padding:20px;text-align:center;color:#6b7280;background:#fff;border-radius:16px;box-shadow:0 10px 25px #0f172a14}.empty-icon{font-size:40px;margin-bottom:16px}.message{display:flex;align-items:center;gap:12px;padding:16px;border-radius:16px;background:#fff;box-shadow:0 4px 15px #0f172a0d}.user-message{align-self:flex-end;background:#eef2ff}.ai-message{align-self:flex-start}.message-avatar{width:40px;height:40px;border-radius:12px;background:#eef2ff;display:flex;align-items:center;justify-content:center;font-size:20px}.message-content{flex:1;color:#1f2937}.message-text{white-space:pre-wrap;line-height:1.6}.message-meta{margin-top:8px;font-size:13px;color:#6b7280;display:flex;gap:12px}.meta-item{display:inline-flex;align-items:center}.typing-indicator{display:inline-flex;gap:4px}.typing-indicator span{width:8px;height:8px;background:#c7d2fe;border-radius:50%;animation:typing 1s infinite ease-in-out}.typing-indicator span:nth-child(2){animation-delay:.2s}.typing-indicator span:nth-child(3){animation-delay:.4s}@keyframes typing{0%,80%,to{transform:translateY(0);opacity:.3}40%{transform:translateY(-6px);opacity:1}}.error-message{display:flex;align-items:center;gap:8px;padding:12px 16px;background:#fee2e2;border-radius:12px;color:#b91c1c;font-size:14px}.error-icon{font-size:18px}@media (max-width: 768px){.app{flex-direction:column}.header{padding:30px 20px 15px}.header h1{font-size:24px}.chat-content{padding:20px}}*{margin:0;padding:0;box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh}#root{min-height:100vh}