.kbai-chatbot-container{position:fixed;bottom:20px;right:20px;width:400px;height:600px;background:#ffffff;border-radius:12px;box-shadow:0 8px 32px rgba(0,0,0,0.1);display:flex;flex-direction:column;z-index:9999;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;border:1px solid #e1e5e9;overflow:hidden}.kbai-chatbot-container:hover{box-shadow:0 12px 40px rgba(0,0,0,0.15)}.kbai-chatbot-header{background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);color:white;padding:16px 20px;border-radius:12px 12px 0 0;display:flex;justify-content:space-between;align-items:center;position:relative;overflow:hidden}.kbai-chatbot-header::before{content:'';position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(45deg,rgba(255,255,255,0.1) 0%,transparent 100%);pointer-events:none}.kbai-chatbot-header h3{margin:0;font-size:18px;font-weight:600;position:relative;z-index:1}.kbai-minimize-btn{background:rgba(255,255,255,0.15);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,0.2);color:white;width:32px;height:32px;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;position:relative;z-index:2;transition:all 0.3s cubic-bezier(0.4,0,0.2,1);outline:none;box-shadow:0 4px 12px rgba(0,0,0,0.15)}.kbai-minimize-btn:hover{background:rgba(255,255,255,0.3)}.kbai-chatbot-body{flex:1;display:flex;flex-direction:column;overflow:hidden;background:#f8f9fa}.kbai-messages-container{flex:1;padding:20px;overflow-y:auto;scroll-behavior:smooth}.kbai-messages-container::-webkit-scrollbar{width:6px}.kbai-messages-container::-webkit-scrollbar-track{background:#f1f1f1;border-radius:3px}.kbai-messages-container::-webkit-scrollbar-thumb{background:#c1c1c1;border-radius:3px}.kbai-messages-container::-webkit-scrollbar-thumb:hover{background:#a8a8a8}.kbai-welcome-message{background:linear-gradient(135deg,#e3f2fd 0%,#f3e5f5 100%);padding:16px;border-radius:12px;margin-bottom:16px;border-left:4px solid #2196f3;position:relative;overflow:hidden}.kbai-welcome-message::before{content:'';position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(45deg,rgba(33,150,243,0.1) 0%,transparent 100%);pointer-events:none}.kbai-welcome-message p{margin:0;color:#1976d2;font-size:14px;line-height:1.5;position:relative;z-index:1}.kbai-message{margin-bottom:16px;display:flex;align-items:flex-start}.kbai-message.user{justify-content:flex-end}.kbai-message.assistant{justify-content:flex-start}.kbai-message-content{max-width:80%;padding:12px 16px;border-radius:18px;font-size:14px;line-height:1.5;word-wrap:break-word;position:relative;box-shadow:0 2px 8px rgba(0,0,0,0.1)}.kbai-message.user .kbai-message-content{background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);color:white;border-bottom-right-radius:4px}.kbai-message.assistant .kbai-message-content{background:white;color:#333;border:1px solid #e1e5e9;border-bottom-left-radius:4px}.kbai-typing-indicator{padding:16px 20px;display:flex;align-items:center;gap:12px;background:white;border-top:1px solid #e1e5e9}.kbai-typing-dots{display:flex;gap:4px}.kbai-typing-dots span{width:8px;height:8px;background:#667eea;border-radius:50%}.kbai-typing-text{color:#666;font-size:14px;font-style:italic}.kbai-chatbot-footer{background:white;border-top:1px solid #e1e5e9;border-radius:0 0 12px 12px}.kbai-input-container{display:flex;padding:16px;gap:12px;align-items:center}#kbai-message-input{flex:1;padding:12px 16px;border:1px solid #e1e5e9;border-radius:24px;font-size:14px;outline:none;background:#f8f9fa}#kbai-message-input:focus{border-color:#667eea;background:white;box-shadow:0 0 0 3px rgba(102,126,234,0.1)}#kbai-message-input::placeholder{color:#999}#kbai-send-btn{background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);border:none;color:white;width:46px;height:46px;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 16px rgba(102,126,234,0.4);position:relative;overflow:hidden;transition:all 0.3s cubic-bezier(0.4,0,0.2,1);outline:none}#kbai-send-btn::before{content:'';position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(135deg,rgba(255,255,255,0.2) 0%,transparent 100%);border-radius:50%;opacity:0;transition:opacity 0.3s ease}#kbai-send-btn:hover{background:linear-gradient(135deg,#5a6fd8 0%,#6b4699 100%);box-shadow:0 6px 24px rgba(102,126,234,0.5);transform:translateY(-2px) scale(1.05)}#kbai-send-btn:hover::before{opacity:1}#kbai-send-btn:hover svg{transform:scale(1.1) rotate(15deg)}#kbai-send-btn:disabled{background:#ccc;cursor:not-allowed;transform:none;box-shadow:none}.kbai-suggestions{padding:0 16px 16px;background:white}.kbai-suggestion-label{font-size:12px;color:#666;margin-bottom:8px;display:block;font-weight:500}.kbai-suggestion-tags{display:flex;flex-wrap:wrap;gap:8px}.kbai-suggestion-tag{background:#f0f0f0;color:#666;padding:6px 12px;border-radius:16px;font-size:12px;cursor:pointer;border:1px solid transparent}.kbai-suggestion-tag:hover{background:#e0e0e0;color:#333;border-color:#667eea}.kbai-sources{background:#f8f9fa;border-top:1px solid #e1e5e9;max-height:200px;overflow-y:auto}.kbai-sources::-webkit-scrollbar{width:6px}.kbai-sources::-webkit-scrollbar-track{background:#f1f1f1}.kbai-sources::-webkit-scrollbar-thumb{background:#c1c1c1;border-radius:3px}.kbai-sources-header{padding:12px 16px;background:#e9ecef;display:flex;justify-content:space-between;align-items:center;font-size:14px;font-weight:600;color:#495057;border-bottom:1px solid #dee2e6}.kbai-sources-header button{background:none;border:none;font-size:18px;cursor:pointer;color:#6c757d;width:24px;height:24px;border-radius:50%;display:flex;align-items:center;justify-content:center}.kbai-sources-header button:hover{background:#dee2e6;color:#495057}.kbai-sources-content{padding:16px}.kbai-source-item{background:white;padding:12px;border-radius:8px;margin-bottom:8px;border-left:3px solid #667eea;box-shadow:0 1px 3px rgba(0,0,0,0.1)}.kbai-source-item:last-child{margin-bottom:0}.kbai-source-item:hover{box-shadow:0 2px 6px rgba(0,0,0,0.15)}.kbai-source-title{font-weight:600;color:#333;margin-bottom:4px;font-size:14px;line-height:1.3}.kbai-source-summary{color:#666;font-size:12px;line-height:1.4;margin-bottom:4px}.kbai-source-category{display:inline-block;background:#e3f2fd;color:#1976d2;padding:2px 8px;border-radius:12px;font-size:10px;font-weight:500;text-transform:uppercase;letter-spacing:0.5px}@media (max-width:480px){.kbai-chatbot-container{width:calc(100vw - 20px);height:calc(100vh - 20px);bottom:10px;right:10px;left:10px}.kbai-message-content{max-width:90%}.kbai-suggestion-tags{flex-direction:column}.kbai-suggestion-tag{text-align:center}}@media (max-width:768px){.kbai-chatbot-container{width:calc(100vw - 40px);height:calc(100vh - 40px)}}.kbai-chatbot-container.minimized{height:60px;width:60px;border-radius:50%;cursor:pointer}.kbai-chatbot-container.minimized:hover{box-shadow:0 8px 25px rgba(102,126,234,0.3)}.kbai-chatbot-container.minimized .kbai-chatbot-body,.kbai-chatbot-container.minimized .kbai-chatbot-footer{display:none}.kbai-chatbot-container.minimized .kbai-chatbot-header{border-radius:50%;padding:0;display:flex;align-items:center;justify-content:center;height:100%}.kbai-chatbot-container.minimized .kbai-chatbot-header h3{display:none}.kbai-chatbot-container.minimized .kbai-minimize-btn{width:100%;height:100%;border-radius:50%;font-size:24px;background:transparent;border:none;color:white;display:flex;align-items:center;justify-content:center;cursor:pointer;position:relative;z-index:10;pointer-events:auto}.kbai-chatbot-container.minimized .kbai-minimize-btn:hover{background:rgba(255,255,255,0.2)}@media (prefers-color-scheme:dark){.kbai-chatbot-container{background:#1a1a1a;border-color:#333}.kbai-messages-container{background:#2a2a2a}.kbai-message.assistant .kbai-message-content{background:#333;color:#fff;border-color:#444}.kbai-chatbot-footer{background:#1a1a1a;border-color:#333}#kbai-message-input{background:#333;color:#fff;border-color:#444}#kbai-message-input:focus{background:#444;border-color:#667eea}.kbai-sources{background:#2a2a2a;border-color:#333}.kbai-sources-header{background:#333;color:#fff;border-color:#444}.kbai-source-item{background:#333;color:#fff}.kbai-source-title{color:#fff}.kbai-source-summary{color:#ccc}}.kbai-chatbot-container:focus-within{outline:2px solid #667eea;outline-offset:2px}#kbai-send-btn:focus,.kbai-minimize-btn:focus{outline:2px solid #667eea;outline-offset:2px}.kbai-loading{opacity:0.6;pointer-events:none}.kbai-loading::after{content:'';position:absolute;top:50%;left:50%;width:20px;height:20px;margin:-10px 0 0 -10px;border:2px solid #667eea;border-top:2px solid transparent;border-radius:50%}

/* SVG图标优化样式 */
.kbai-chatbot-container svg{display:block;color:inherit;flex-shrink:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;transform:translateZ(0);-webkit-transform:translateZ(0)}

.kbai-minimize-btn svg{transition:transform 0.2s ease}

#kbai-send-btn svg{transition:transform 0.2s ease}

#kbai-send-btn{transition:all 0.2s ease;outline:none}

#kbai-send-btn:hover{background:linear-gradient(135deg,#5a6fd8 0%,#6b4699 100%);box-shadow:0 4px 12px rgba(102,126,234,0.4);transform:translateY(-1px)}

#kbai-send-btn:hover svg{transform:scale(1.05)}

#kbai-send-btn:active{transform:translateY(0px);box-shadow:0 2px 6px rgba(102,126,234,0.3)}

.kbai-minimize-btn,.kbai-send-btn{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}

.kbai-icon-chat,.kbai-icon-close{display:flex;align-items:center;justify-content:center;width:100%;height:100%}

.kbai-minimize-btn:hover{background:rgba(255,255,255,0.25);border-color:rgba(255,255,255,0.4);transform:scale(1.05);box-shadow:0 6px 20px rgba(0,0,0,0.2)}

.kbai-minimize-btn:active{transform:scale(0.95);transition:all 0.1s ease}

.kbai-chatbot-container.minimized .kbai-minimize-btn{background:rgba(255,255,255,0.1);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,0.15);box-shadow:0 8px 32px rgba(0,0,0,0.2);transition:all 0.3s cubic-bezier(0.4,0,0.2,1)}

.kbai-chatbot-container.minimized .kbai-minimize-btn:hover{background:rgba(255,255,255,0.2);border-color:rgba(255,255,255,0.3);transform:scale(1.1);box-shadow:0 12px 48px rgba(0,0,0,0.3)}

.kbai-chatbot-container.minimized .kbai-minimize-btn svg{width:24px;height:24px;transition:all 0.3s ease}

.kbai-chatbot-container.minimized .kbai-minimize-btn:hover svg{transform:scale(1.1)}

@keyframes pulse-glow{0%,100%{box-shadow:0 4px 16px rgba(102,126,234,0.4)}50%{box-shadow:0 6px 24px rgba(102,126,234,0.6)}}

#kbai-send-btn:focus{animation:pulse-glow 2s infinite}

.kbai-chatbot-container svg{filter:drop-shadow(0 1px 2px rgba(0,0,0,0.1))}