.login-container{width:100%;height:100vh;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden;background:linear-gradient(135deg,#e8f4fd,#d0e8f8,#b8daf0 60%,#e0f0fa)}.login-bg{position:absolute;top:0;right:0;bottom:0;left:0;overflow:hidden}.login-orb{position:absolute;border-radius:50%;filter:blur(80px);opacity:.4;animation:float 8s ease-in-out infinite}.orb-1{width:300px;height:300px;background:var(--primary-light);top:-50px;right:-50px;animation-delay:0s}.orb-2{width:250px;height:250px;background:var(--primary);bottom:-30px;left:-30px;animation-delay:-3s}.orb-3{width:200px;height:200px;background:#6dc8f0;top:50%;left:50%;transform:translate(-50%,-50%);animation-delay:-6s}@keyframes float{0%,to{transform:translateY(0) scale(1)}50%{transform:translateY(-20px) scale(1.05)}}.login-card{position:relative;z-index:1;background:#ffffffd9;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid rgba(77,168,218,.2);border-radius:var(--radius-xl);padding:40px;width:400px;max-width:90vw;box-shadow:var(--shadow-lg)}.login-header{text-align:center;margin-bottom:32px}.login-logo{margin-bottom:16px}.login-header h1{font-size:24px;font-weight:700;color:var(--text-primary);margin-bottom:4px}.login-header p{font-size:14px;color:var(--text-secondary)}.login-form{display:flex;flex-direction:column;gap:20px}.input-group{display:flex;flex-direction:column;gap:6px}.input-group label{font-size:13px;font-weight:600;color:var(--text-secondary)}.input-group input{padding:12px 16px;border:1.5px solid var(--border);border-radius:var(--radius-md);background:var(--bg-input);font-size:14px;color:var(--text-primary);transition:var(--transition);outline:none}.input-group input:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-glow)}.login-error{padding:10px 14px;background:#fef0f0;border:1px solid #f5c6c6;border-radius:var(--radius-sm);color:var(--error);font-size:13px}.login-btn{padding:12px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:var(--text-light);border:none;border-radius:var(--radius-md);font-size:15px;font-weight:600;cursor:pointer;transition:var(--transition)}.login-btn:hover{transform:translateY(-1px);box-shadow:0 4px 16px var(--primary-glow)}.login-footer{text-align:center;margin-top:20px;font-size:12px;color:var(--text-muted)}.sidebar{width:280px;min-width:280px;height:100vh;background:var(--bg-sidebar);border-right:1px solid var(--border-light);display:flex;flex-direction:column}.sidebar-header{padding:20px 16px;border-bottom:1px solid var(--border-light)}.sidebar-logo{display:flex;align-items:center;gap:10px;margin-bottom:16px;font-size:16px;font-weight:700;color:var(--text-primary)}.new-chat-btn{width:100%;display:flex;align-items:center;justify-content:center;gap:8px;padding:10px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:var(--text-light);border:none;border-radius:var(--radius-md);font-size:14px;font-weight:600;cursor:pointer;transition:var(--transition)}.new-chat-btn:hover{transform:translateY(-1px);box-shadow:0 4px 12px var(--primary-glow)}.conversation-list{flex:1;overflow-y:auto;padding:8px}.conv-item{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:var(--radius-md);cursor:pointer;transition:var(--transition);color:var(--text-secondary);position:relative}.conv-item:hover{background:var(--bg-hover);color:var(--text-primary)}.conv-item.active{background:var(--primary-bg);color:var(--primary-dark)}.conv-title{flex:1;font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.conv-delete{opacity:0;background:none;border:none;color:var(--text-muted);cursor:pointer;padding:4px;border-radius:4px;transition:var(--transition)}.conv-item:hover .conv-delete{opacity:1}.conv-delete:hover{color:var(--error);background:#e060601a}.sidebar-footer{padding:12px 16px;border-top:1px solid var(--border-light);display:flex;align-items:center;justify-content:space-between}.user-info{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-secondary)}.user-avatar{width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:var(--text-light);display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700}.logout-btn{background:none;border:none;color:var(--text-muted);cursor:pointer;padding:6px;border-radius:var(--radius-sm);transition:var(--transition)}.logout-btn:hover{color:var(--error);background:#e060601a}.message-bubble{display:flex;padding:12px 24px;animation:fadeIn .3s ease}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.message-bubble.user{justify-content:flex-end}.message-content{max-width:80%;padding:12px 18px;border-radius:var(--radius-lg);font-size:14px;line-height:1.7}.message-bubble.assistant .message-content{background:var(--bg-card);border:1px solid var(--border-light);box-shadow:var(--shadow-sm);margin-left:40px;max-width:calc(80% - 40px)}.message-bubble.user .message-content{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:var(--text-light);max-width:70%}.message-content p{margin-bottom:8px}.message-content p:last-child{margin-bottom:0}.message-content pre{margin:8px 0;border-radius:var(--radius-sm);overflow:hidden}.message-content code{font-size:13px}.message-content :not(pre)>code{background:#4da8da1a;color:var(--primary-dark);padding:2px 6px;border-radius:4px;font-size:13px}.message-bubble.user .message-content :not(pre)>code{background:#fff3;color:var(--text-light)}.message-content ul,.message-content ol{padding-left:20px;margin:8px 0}.message-content li{margin-bottom:4px}.message-content table{width:100%;border-collapse:collapse;margin:8px 0;font-size:13px}.message-content th,.message-content td{border:1px solid var(--border);padding:8px 12px;text-align:left}.message-content th{background:var(--primary-bg);font-weight:600}.message-content blockquote{border-left:3px solid var(--primary);padding-left:12px;margin:8px 0;color:var(--text-secondary)}.message-tool{padding:8px 24px;animation:fadeIn .3s ease}.tool-badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;background:var(--primary-bg);border:1px solid var(--border);border-radius:20px;font-size:12px;color:var(--primary-dark);margin-bottom:6px}.tool-content{font-size:12px;color:var(--text-muted);background:var(--bg-input);padding:8px 12px;border-radius:var(--radius-sm);max-height:120px;overflow-y:auto;white-space:pre-wrap;word-break:break-all}.thinking-block{margin-bottom:10px}.thinking-toggle-btn{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;background:#4da8da14;border:1px solid rgba(77,168,218,.25);border-radius:20px;font-size:12px;color:var(--primary-dark);cursor:pointer;transition:all .2s}.thinking-toggle-btn:hover{background:#4da8da26;border-color:#4da8da66}.thinking-chevron{transition:transform .2s}.thinking-chevron.expanded{transform:rotate(180deg)}.thinking-content{margin-top:8px;padding:10px 14px;background:#4da8da0a;border-left:3px solid rgba(77,168,218,.4);border-radius:0 var(--radius-sm) var(--radius-sm) 0;font-size:13px;color:var(--text-secondary);line-height:1.6}.thinking-content p{margin-bottom:6px}.thinking-content p:last-child{margin-bottom:0}.message-images{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:8px}.message-image{max-width:200px;max-height:200px;border-radius:var(--radius-sm);object-fit:contain;cursor:pointer;transition:transform .2s}.message-image:hover{transform:scale(1.05)}.settings-panel{background:var(--bg-card);border-bottom:1px solid var(--border-light);box-shadow:var(--shadow-md);animation:slideDown .2s ease}@keyframes slideDown{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.settings-header{display:flex;align-items:center;justify-content:space-between;padding:14px 24px;border-bottom:1px solid var(--border-light)}.settings-header h4{font-size:14px;font-weight:600;color:var(--text-primary)}.settings-close{background:none;border:none;color:var(--text-muted);cursor:pointer;padding:4px;border-radius:4px;transition:var(--transition)}.settings-close:hover{color:var(--text-primary);background:var(--bg-hover)}.settings-body{padding:16px 24px;display:flex;flex-direction:column;gap:16px;max-height:400px;overflow-y:auto}.setting-group{display:flex;flex-direction:column;gap:6px}.setting-group label{font-size:12px;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px}.setting-group select{padding:8px 12px;border:1.5px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-input);font-size:13px;color:var(--text-primary);outline:none;cursor:pointer;transition:var(--transition)}.setting-group select:focus{border-color:var(--primary)}.setting-group input[type=range]{-webkit-appearance:none;width:100%;height:6px;background:var(--border);border-radius:3px;outline:none}.setting-group input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:18px;height:18px;border-radius:50%;background:var(--primary);cursor:pointer;box-shadow:0 2px 6px var(--primary-glow)}.range-labels{display:flex;justify-content:space-between;font-size:11px;color:var(--text-muted)}.setting-group textarea{padding:10px 12px;border:1.5px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-input);font-size:13px;color:var(--text-primary);outline:none;resize:vertical;transition:var(--transition)}.setting-group textarea:focus{border-color:var(--primary)}.tools-list{display:flex;flex-direction:column;gap:6px}.tool-checkbox{display:flex;align-items:center;gap:8px;padding:8px 12px;background:var(--bg-input);border:1px solid var(--border-light);border-radius:var(--radius-sm);cursor:pointer;transition:var(--transition)}.tool-checkbox:hover{border-color:var(--primary);background:var(--primary-bg)}.tool-checkbox input[type=checkbox]{accent-color:var(--primary)}.tool-name{font-size:13px;font-weight:600;color:var(--text-primary);min-width:120px}.tool-desc{font-size:12px;color:var(--text-muted)}.settings-footer{display:flex;justify-content:space-between;align-items:center;padding:14px 24px;border-top:1px solid var(--border-light)}.settings-footer-right{display:flex;gap:10px}.default-btn{padding:8px 20px;background:transparent;border:1.5px solid var(--primary);border-radius:var(--radius-sm);font-size:13px;font-weight:600;color:var(--primary);cursor:pointer;transition:var(--transition)}.default-btn:hover:not(:disabled){background:var(--primary-bg)}.default-btn:disabled{opacity:.6;cursor:not-allowed}.cancel-btn{padding:8px 20px;background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-sm);font-size:13px;color:var(--text-secondary);cursor:pointer;transition:var(--transition)}.cancel-btn:hover{background:var(--bg-hover)}.save-btn{padding:8px 20px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));border:none;border-radius:var(--radius-sm);font-size:13px;font-weight:600;color:var(--text-light);cursor:pointer;transition:var(--transition)}.save-btn:hover:not(:disabled){box-shadow:0 4px 12px var(--primary-glow)}.save-btn:disabled{opacity:.5;cursor:not-allowed}.chat-area{flex:1;display:flex;flex-direction:column;height:100vh;background:var(--bg-main)}.chat-empty{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;color:var(--text-muted)}.empty-icon{opacity:.8;margin-bottom:8px}.chat-empty h2{font-size:22px;color:var(--text-secondary);font-weight:600}.chat-empty p{font-size:14px}.chat-header{display:flex;align-items:center;justify-content:space-between;padding:14px 24px;background:var(--bg-card);border-bottom:1px solid var(--border-light);box-shadow:var(--shadow-sm)}.chat-header h3{font-size:15px;font-weight:600;color:var(--text-primary)}.messages-container{flex:1;overflow-y:auto;padding:8px 0}.typing-indicator{display:flex;gap:4px;padding:16px 24px}.typing-indicator span{width:8px;height:8px;border-radius:50%;background:var(--primary);animation:typing 1.4s ease-in-out infinite}.typing-indicator span:nth-child(2){animation-delay:.2s}.typing-indicator span:nth-child(3){animation-delay:.4s}@keyframes typing{0%,60%,to{transform:translateY(0);opacity:.4}30%{transform:translateY(-8px);opacity:1}}.chat-input-area{padding:16px 24px;background:var(--bg-card);border-top:1px solid var(--border-light)}.input-wrapper{display:flex;align-items:flex-end;gap:10px;background:var(--bg-input);border:1.5px solid var(--border);border-radius:var(--radius-lg);padding:8px 12px;transition:var(--transition);flex-wrap:wrap;position:relative}.input-wrapper:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-glow)}.image-upload-btn{width:32px;height:32px;min-width:32px;border:none;border-radius:var(--radius-sm);background:transparent;color:var(--text-muted);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:var(--transition);flex-shrink:0}.image-upload-btn:hover:not(:disabled){color:var(--primary);background:var(--primary-glow)}.image-upload-btn:disabled{opacity:.4;cursor:not-allowed}.image-preview-bar{display:flex;gap:8px;padding-bottom:8px;width:100%;overflow-x:auto;border-bottom:1px solid var(--border-light);margin-bottom:4px}.image-preview-item{position:relative;width:56px;height:56px;flex-shrink:0;border-radius:var(--radius-sm);overflow:hidden;border:1.5px solid var(--border)}.image-preview-item img{width:100%;height:100%;object-fit:cover}.image-remove-btn{position:absolute;top:2px;right:2px;width:16px;height:16px;border:none;border-radius:50%;background:#0009;color:#fff;font-size:11px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center;padding:0}.image-remove-btn:hover{background:var(--error)}.input-wrapper textarea{flex:1;border:none;background:transparent;resize:none;font-size:14px;color:var(--text-primary);outline:none;max-height:200px;line-height:1.5;padding:4px 0}.input-wrapper textarea::placeholder{color:var(--text-muted)}.send-btn{width:38px;height:38px;min-width:38px;border:none;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:var(--text-light);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:var(--transition)}.send-btn:hover:not(:disabled){transform:scale(1.05);box-shadow:0 4px 12px var(--primary-glow)}.send-btn:disabled{opacity:.4;cursor:not-allowed}.stop-btn{width:38px;height:38px;min-width:38px;border:none;border-radius:50%;background:var(--error);color:var(--text-light);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:var(--transition)}.stop-btn:hover{transform:scale(1.05);box-shadow:0 4px 12px #e060604d}.chat-toolbar{display:flex;align-items:center;justify-content:space-between;margin-top:10px}.toolbar-left,.toolbar-right{display:flex;align-items:center;gap:10px}.model-select{padding:6px 12px;border:1.5px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-input);color:var(--text-primary);font-size:13px;font-weight:500;letter-spacing:.3px;cursor:pointer;outline:none;transition:var(--transition)}.model-select:focus{border-color:var(--primary);box-shadow:0 0 0 2px var(--primary-glow)}.thinking-toggle{display:flex;align-items:center;gap:6px;padding:6px 14px;border:1.5px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-input);color:var(--text-secondary);font-size:13px;font-weight:500;letter-spacing:.3px;cursor:pointer;transition:var(--transition);outline:none}.thinking-toggle:hover{border-color:var(--primary);color:var(--primary)}.thinking-toggle.enabled{border-color:#1e40af;background:#1e40af1a;color:#1e40af}.thinking-toggle.disabled{border-color:#dbeafe;background:#dbeafe80;color:#60a5fa}.thinking-toggle.auto{border-color:#3b82f6;background:#3b82f61a;color:#3b82f6}.settings-toggle{display:flex;align-items:center;justify-content:center;width:32px;height:32px;padding:0;border:none;border-radius:var(--radius-sm);background:transparent;color:var(--text-muted);cursor:pointer;transition:var(--transition);outline:none}.settings-toggle:hover{color:var(--primary);background:var(--primary-glow)}.settings-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0000004d;display:flex;align-items:center;justify-content:center;z-index:100}.settings-overlay-content{max-width:520px;width:90%;max-height:85vh;overflow-y:auto}:root{--primary: #4da8da;--primary-light: #7ec8f0;--primary-dark: #2b8ab8;--primary-bg: #e8f4fd;--primary-glow: rgba(77, 168, 218, .3);--bg-main: #f0f7fc;--bg-sidebar: #e3f0f9;--bg-card: #ffffff;--bg-input: #f5fafe;--bg-hover: #dceef8;--bg-code: #1a2332;--text-primary: #1a2a3a;--text-secondary: #5a7a9a;--text-muted: #8aa8c0;--text-light: #ffffff;--border: #c8ddf0;--border-light: #dce8f4;--success: #4ecdc4;--warning: #f0c060;--error: #e06060;--shadow-sm: 0 1px 3px rgba(43, 138, 184, .08);--shadow-md: 0 4px 12px rgba(43, 138, 184, .12);--shadow-lg: 0 8px 24px rgba(43, 138, 184, .16);--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-xl: 20px;--transition: .2s ease}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;background:var(--bg-main);color:var(--text-primary);line-height:1.6;-webkit-font-smoothing:antialiased}#root{height:100vh;display:flex}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--primary-light)}input,textarea,select,button{font-family:inherit}a{color:var(--primary);text-decoration:none}a:hover{color:var(--primary-dark)}