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.category-btn{width:36px;height:36px;border:none;background:transparent;border-radius:var(--chat-radius-sm);cursor:pointer;font-size:18px;display:flex;align-items:center;justify-content:center;transition:all var(--chat-transition-fast);position:relative;overflow:hidden}.emoji-picker .category-btn:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:var(--chat-primary);opacity:0;transition:opacity var(--chat-transition-fast);border-radius:var(--chat-radius-sm)}.emoji-picker .category-btn:hover{background:var(--chat-bg-tertiary)}.emoji-picker .category-btn:hover:before{opacity:.08}.emoji-picker .category-btn.active{background:var(--chat-primary-lighter);color:var(--chat-primary)}.emoji-picker .category-btn.active:before{opacity:.12}.emoji-picker .category-btn.active:after{content:"";position:absolute;bottom:2px;left:50%;transform:translate(-50%);width:16px;height:3px;background:var(--chat-primary);border-radius:var(--chat-radius-full)}@media(max-width:480px){.emoji-picker{width:100%;max-width:340px}.emoji-picker .emoji-grid{grid-template-columns:repeat(7,1fr)}.emoji-picker .emoji-item{width:34px;height:34px;font-size:20px}.emoji-picker .category-btn{width:32px;height:32px;font-size:16px}}:root{--chat-primary: #6366F1;--chat-primary-hover: #4F46E5;--chat-primary-light: #A5B4FC;--chat-primary-lighter: #E0E7FF;--chat-primary-dark: #4338CA;--chat-success: #10B981;--chat-warning: #F59E0B;--chat-error: #EF4444;--chat-info: #3B82F6;--chat-bubble-self-bg: #1677ff;--chat-bubble-self-bg-solid: #1677ff;--chat-bubble-self-text: #FFFFFF;--chat-bubble-other-bg: #F1F5F9;--chat-bubble-other-text: #334155;--chat-bubble-system-bg: #FEF3C7;--chat-bubble-system-text: #92400E;--chat-bg-primary: #FFFFFF;--chat-bg-secondary: #F8FAFC;--chat-bg-tertiary: #F1F5F9;--chat-bg-chat: linear-gradient(180deg, #F8FAFC 0%, #EEF2FF 100%);--chat-border-light: #E2E8F0;--chat-border-default: #CBD5E1;--chat-border-focus: var(--chat-primary);--chat-text-primary: #0F172A;--chat-text-secondary: #475569;--chat-text-tertiary: #94A3B8;--chat-text-placeholder: #9CA3AF;--chat-space-1: 4px;--chat-space-2: 8px;--chat-space-3: 12px;--chat-space-4: 16px;--chat-space-5: 20px;--chat-space-6: 24px;--chat-space-8: 32px;--chat-font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;--chat-font-size-xs: 11px;--chat-font-size-sm: 12px;--chat-font-size-base: 14px;--chat-font-size-md: 15px;--chat-font-size-lg: 16px;--chat-font-size-xl: 18px;--chat-line-height: 1.5;--chat-radius-xs: 4px;--chat-radius-sm: 6px;--chat-radius-md: 8px;--chat-radius-lg: 12px;--chat-radius-xl: 16px;--chat-radius-bubble: 18px;--chat-radius-full: 9999px;--chat-shadow-xs: 0 1px 2px rgba(0, 0, 0, .04);--chat-shadow-sm: 0 1px 3px rgba(0, 0, 0, .06), 0 1px 2px rgba(0, 0, 0, .04);--chat-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .08), 0 2px 4px -1px rgba(0, 0, 0, .04);--chat-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .08), 0 4px 6px -2px rgba(0, 0, 0, .04);--chat-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .1), 0 10px 10px -5px rgba(0, 0, 0, .04);--chat-shadow-float: 0 8px 30px rgba(0, 0, 0, .12);--chat-transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--chat-transition-normal: .2s cubic-bezier(.4, 0, .2, 1);--chat-transition-slow: .3s cubic-bezier(.4, 0, .2, 1);--chat-transition-spring: .4s cubic-bezier(.34, 1.56, .64, 1);--chat-avatar-sm: 28px;--chat-avatar-md: 36px;--chat-avatar-lg: 44px;--chat-toolbar-btn-size: 34px;--chat-toolbar-icon-size: 18px}@keyframes chatMessageSlideIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes chatMessageSlideInLeft{0%{opacity:0;transform:translate(-20px)}to{opacity:1;transform:translate(0)}}@keyframes chatMessageSlideInRight{0%{opacity:0;transform:translate(20px)}to{opacity:1;transform:translate(0)}}@keyframes chatFadeIn{0%{opacity:0}to{opacity:1}}@keyframes chatScaleIn{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}@keyframes chatPulse{0%,to{opacity:1}50%{opacity:.5}}@keyframes chatBounceIn{0%{opacity:0;transform:scale(.3)}50%{transform:scale(1.05)}70%{transform:scale(.9)}to{opacity:1;transform:scale(1)}}@keyframes chatShimmer{0%{background-position:-200% 0}to{background-position:200% 0}}.chat-toolbar{position:relative}.chat-toolbar .toolbar-buttons{display:flex;gap:var(--chat-space-2);align-items:center;padding:var(--chat-space-1) 0}.chat-toolbar .toolbar-buttons .toolbar-btn{width:var(--chat-toolbar-btn-size);height:var(--chat-toolbar-btn-size);display:flex;align-items:center;justify-content:center;border:1px solid var(--chat-border-light);border-radius:var(--chat-radius-md);background:var(--chat-bg-primary);color:var(--chat-text-secondary);transition:all var(--chat-transition-fast);cursor:pointer;position:relative;overflow:hidden}.chat-toolbar .toolbar-buttons .toolbar-btn:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:var(--chat-primary);opacity:0;transition:opacity var(--chat-transition-fast)}.chat-toolbar .toolbar-buttons .toolbar-btn:hover{border-color:var(--chat-primary);color:var(--chat-primary);background:var(--chat-primary-lighter);transform:translateY(-2px);box-shadow:var(--chat-shadow-sm)}.chat-toolbar .toolbar-buttons .toolbar-btn:hover:before{opacity:.05}.chat-toolbar .toolbar-buttons .toolbar-btn:active{transform:translateY(0);box-shadow:none}.chat-toolbar .toolbar-buttons .toolbar-btn:disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}.chat-toolbar .toolbar-buttons .toolbar-btn:disabled:hover{border-color:var(--chat-border-light);color:var(--chat-text-secondary);background:var(--chat-bg-primary)}.chat-toolbar .toolbar-buttons .toolbar-btn .anticon{font-size:var(--chat-toolbar-icon-size);position:relative;z-index:1}.chat-toolbar .emoji-picker-container{position:absolute;bottom:calc(100% + var(--chat-space-2));left:0;z-index:1000;background:var(--chat-bg-primary);border:1px solid var(--chat-border-light);border-radius:var(--chat-radius-lg);box-shadow:var(--chat-shadow-float);animation:chatScaleIn var(--chat-transition-normal) ease-out;transform-origin:bottom left}.chat-toolbar .emoji-picker-container:after{content:"";position:absolute;bottom:-6px;left:20px;width:12px;height:12px;background:var(--chat-bg-primary);border-right:1px solid var(--chat-border-light);border-bottom:1px solid var(--chat-border-light);transform:rotate(45deg);box-shadow:2px 2px 4px #0000000a}.loading-state .loading-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background-color:#fffffff2;display:flex;justify-content:center;align-items:center;z-index:9999}.loading-state .loading-content{text-align:center;padding:20px}.loading-state .loading-spinner{width:40px;height:40px;border:4px solid #f3f3f3;border-top:4px solid #1976d2;border-radius:50%;animation:spin 1s linear infinite;margin:0 auto 16px}.loading-state .loading-text{font-size:16px;color:#333;margin-bottom:8px}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.error-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background-color:#fffffff2;display:flex;justify-content:center;align-items:center;z-index:9999}.error-content{text-align:center;padding:20px;max-width:400px}.error-icon{font-size:48px;margin-bottom:16px}.error-message{font-size:16px;color:#d32f2f;margin-bottom:20px;line-height:1.5}.retry-button{background-color:#1976d2;color:#fff;border:none;padding:12px 24px;border-radius:4px;font-size:14px;cursor:pointer;transition:background-color .2s}.retry-button:hover{background-color:#1565c0}.retry-button:active{background-color:#0d47a1}*{margin:0;padding:0;box-sizing:border-box}html,body,#root{width:100%;height:100%;overflow:hidden}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}:root{--chat-bg-chat: #fff;--chat-bg-primary: #fff;--chat-bg-secondary: #fff;--chat-bg-tertiary: #fff}.chat-window .chat-footer.layout-customer .fb-composer textarea,.chat-window .chat-footer.layout-customer .fb-composer textarea.ant-input,.chat-window .chat-footer.layout-customer .fb-composer .ant-input-textarea textarea,.chat-window .chat-footer.layout-customer .fb-composer .ant-input textarea{padding-right:60px!important}.chat-window .chat-footer.layout-customer .fb-composer .fb-emoji-btn:active:not(:disabled){transform:translateY(-50%) scale(.98)!important}@media(max-width:480px){.chat-window .chat-footer.layout-customer .fb-composer textarea,.chat-window .chat-footer.layout-customer .fb-composer textarea.ant-input,.chat-window .chat-footer.layout-customer .fb-composer .ant-input-textarea textarea,.chat-window .chat-footer.layout-customer .fb-composer .ant-input textarea{padding-right:52px!important}}