.chat-container{background:#fff;border-radius:12px;box-shadow:0 20px 60px #0000004d;width:100%;height:100%;display:flex;flex-direction:column;overflow:hidden}.chat-header{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:20px;text-align:center}.chat-header h1{font-size:24px;margin-bottom:5px}.chat-header p{opacity:.9;font-size:14px}.chat-messages{flex:1;overflow-y:auto;padding:20px;background:#f5f5f5}.message{margin-bottom:15px;animation:fadeIn .3s}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.message.user{text-align:right}.message-content{display:inline-block;padding:12px 16px;border-radius:18px;max-width:70%;word-wrap:break-word}.message.user .message-content{background:#667eea;color:#fff}.message.assistant .message-content{background:#fff;color:#333;border:1px solid #e0e0e0}.message-content.loading{font-style:italic;opacity:.7;min-height:20px}.message-content.loading:after{content:"...";animation:dots 1.5s steps(4,end) infinite}@keyframes dots{0%,20%{content:"."}40%{content:".."}60%,to{content:"..."}}.chat-input-area{padding:20px;background:#fff;border-top:1px solid #e0e0e0;display:flex;gap:10px}.chat-input-area input{flex:1;padding:12px 16px;border:2px solid #e0e0e0;border-radius:24px;font-size:14px;outline:none;transition:border-color .3s}.chat-input-area input:focus{border-color:#667eea}.chat-input-area input:disabled{opacity:.5;cursor:not-allowed}.chat-input-area button{padding:12px 24px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;border-radius:24px;font-size:14px;font-weight:600;cursor:pointer;transition:transform .2s,box-shadow .2s}.chat-input-area button:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 4px 12px #667eea66}.chat-input-area button:disabled{opacity:.5;cursor:not-allowed;transform:none}.app{width:100%;max-width:800px;height:600px}*{margin:0;padding:0;box-sizing:border-box}body{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;display:flex;justify-content:center;align-items:center;padding:20px}