*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#root{width:100%;height:100vh}.chat-container{width:100%;height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#ffa366,#ff8447);padding:20px}.chat-card{width:100%;max-width:800px;height:90vh;background:#fff;border-radius:20px;box-shadow:0 20px 60px #0000004d;display:flex;flex-direction:column;overflow:hidden}.chat-header{padding:30px;background:linear-gradient(135deg,#ffa366,#ff8447);text-align:center;color:#fff}.chat-title{margin:0;font-size:28px;font-weight:600;color:#fff}.chat-subtitle{margin:8px 0 0;font-size:14px;opacity:.9;color:#fff}.messages-container{flex:1;overflow-y:auto;padding:24px;background:#f5f5f5}.message-wrapper{display:flex;margin-bottom:20px;align-items:flex-start;gap:12px}.message-wrapper.user-message{justify-content:flex-end}.message-wrapper.assistant-message{justify-content:flex-start}.avatar{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0}.assistant-avatar{background:#ff8447}.user-avatar{background:#ffa366}.message-content-wrapper{display:flex;flex-direction:column;max-width:60%}.message-bubble{padding:12px 16px;border-radius:18px;line-height:1.5;word-wrap:break-word;white-space:pre-wrap}.assistant-bubble{background:#fff;color:#333;border-bottom-left-radius:4px}.user-bubble{background:#ff9155;color:#fff;border-bottom-right-radius:4px}.message-time{font-size:12px;color:#999;margin-top:4px;padding:0 4px}.message-time.right{text-align:right}.input-container{padding:20px;background:#fff;display:flex;gap:12px;align-items:flex-end;border-top:1px solid #e8e8e8}.message-input{flex:1;background:#f5f5f5;border:1px solid #e0e0e0;border-radius:12px;padding:12px 16px;color:#333;font-size:14px;resize:none;min-height:48px;max-height:120px;outline:none;font-family:inherit;transition:all .2s}.message-input::placeholder{color:#999}.message-input:focus{background:#fff;border-color:#ffa366;box-shadow:0 0 0 2px #ffa3661a}.send-button{background:#ff9d5e;color:#fff;border:none;border-radius:12px;padding:12px 24px;font-size:14px;font-weight:500;cursor:pointer;transition:all .2s;white-space:nowrap;min-height:48px}.send-button:hover:not(:disabled){background:#ffb278}.send-button:disabled{opacity:.5;cursor:not-allowed}.messages-container::-webkit-scrollbar{width:6px}.messages-container::-webkit-scrollbar-track{background:transparent}.messages-container::-webkit-scrollbar-thumb{background:#d0d0d0;border-radius:3px}.messages-container::-webkit-scrollbar-thumb:hover{background:#b0b0b0}