.app{display:flex;height:100vh;height:100dvh;overflow:hidden;position:relative}.sidebar{width:300px;background:var(--bg-card);border-right:1px solid var(--border-light);display:flex;flex-direction:column;flex-shrink:0;transition:margin-left .3s cubic-bezier(.4,0,.2,1),transform .3s cubic-bezier(.4,0,.2,1);z-index:100;margin-left:-300px;box-shadow:var(--shadow-md)}.app.sidebar-visible .sidebar{margin-left:0}.sidebar-overlay{display:none}.sidebar-header{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--border-light);background:var(--primary-gradient);color:#fff}.sidebar-header h2{font-size:16px;font-weight:700;letter-spacing:-.01em}.close-btn{width:30px;height:30px;border-radius:8px;display:flex;align-items:center;justify-content:center;color:#ffffffe6;font-size:16px;transition:all var(--transition)}.close-btn:hover{background:#fff3;color:#fff}.tools-list{overflow-y:auto;padding:10px}.tools-empty{text-align:center;color:var(--text-muted);padding:40px 20px;font-size:14px}.tool-card{display:flex;align-items:flex-start;gap:10px;padding:12px 14px;border-radius:var(--radius-sm);transition:all var(--transition);margin-bottom:4px;background:transparent}.tool-card:hover{background:var(--bg-subtle);transform:translate(4px);box-shadow:var(--shadow)}.tool-icon{font-size:22px;flex-shrink:0;margin-top:1px}.tool-info{flex:1;min-width:0;display:flex;flex-direction:column;gap:2px}.tool-name{font-size:12px;font-weight:600;color:var(--text);font-family:SF Mono,Fira Code,monospace}.tool-desc{font-size:11px;color:var(--text-secondary);line-height:1.4}.tool-category{font-size:10px;color:var(--primary);background:var(--primary-light);padding:2px 7px;border-radius:10px;white-space:nowrap;flex-shrink:0;font-weight:500}.sidebar-footer{padding:14px 18px;border-top:1px solid var(--border);font-size:11px;color:var(--text-muted);display:flex;flex-direction:column;gap:3px;background:#f8fafc;flex-shrink:0}.chat-main{flex:1;display:flex;flex-direction:column;min-width:0;background:var(--bg)}.chat-header{display:flex;align-items:center;gap:12px;padding:12px 24px;background:#fffffff2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--border-light);box-shadow:var(--shadow);z-index:10;min-height:64px}.menu-btn{width:36px;height:36px;border-radius:var(--radius-sm);font-size:18px;display:flex;align-items:center;justify-content:center;transition:all var(--transition);color:var(--text-secondary);flex-shrink:0}.menu-btn:hover{background:var(--bg);color:var(--text)}.menu-btn.active{background:var(--primary-light);color:var(--primary)}.header-title{flex:1;display:flex;align-items:center;gap:8px;min-width:0}.logo{font-size:22px}.header-title h1{font-size:20px;font-weight:700;background:var(--primary-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;letter-spacing:-.02em}.badge{font-size:10px;padding:2px 7px;border-radius:10px;background:linear-gradient(135deg,var(--primary),#8b5cf6);color:#fff;font-weight:500;letter-spacing:.03em}.model-selector{font-size:13px;padding:6px 28px 6px 12px;border-radius:8px;background:var(--bg-subtle);color:var(--text-secondary);border:1.5px solid var(--border);font-weight:600;font-family:SF Mono,Fira Code,monospace;cursor:pointer;outline:none;transition:all var(--transition);-moz-appearance:none;appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b7280' d='M6 8L2 4h8z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 8px center}.model-selector:hover{background-color:var(--bg-card);border-color:var(--primary);color:var(--primary)}.model-selector:focus{box-shadow:0 0 0 3px var(--primary-light);border-color:var(--primary)}.settings-btn{width:34px;height:34px;display:flex;align-items:center;justify-content:center;border-radius:8px;border:1.5px solid var(--border);background:var(--bg-card);font-size:16px;cursor:pointer;transition:all var(--transition);margin-left:4px}.settings-btn:hover{border-color:var(--primary);background:var(--primary-light);transform:rotate(60deg)}.settings-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000059;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn .2s ease}.settings-dialog{background:var(--bg-card);border-radius:var(--radius-lg);box-shadow:0 20px 60px #00000026,var(--shadow-glow);width:420px;max-width:90vw;max-height:80vh;overflow-y:auto;animation:slideUp .25s 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var(--primary-light);background:var(--bg-card)}.settings-input::placeholder{color:var(--text-muted);font-weight:400}.settings-save-btn{padding:10px 20px;border-radius:8px;border:none;background:var(--primary-gradient);color:#fff;font-size:14px;font-weight:600;cursor:pointer;transition:all var(--transition);white-space:nowrap}.settings-save-btn:hover{box-shadow:0 4px 12px #6366f166;transform:translateY(-1px)}.settings-hint{margin-top:12px;font-size:12px;color:var(--text-muted);line-height:1.5}.clear-btn{padding:8px 16px;border-radius:var(--radius-sm);font-size:13px;font-weight:600;color:var(--text-secondary);transition:all var(--transition);border:1.5px solid var(--border);flex-shrink:0;background:var(--bg-card)}.clear-btn:hover{background:var(--bg-subtle);color:var(--text);border-color:var(--text-muted);transform:translateY(-1px);box-shadow:var(--shadow)}.messages-container{flex:1;overflow-y:auto;padding:20px 0}.welcome-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:60px 20px;text-align:center;min-height:60vh}.welcome-icon{font-size:72px;margin-bottom:20px;animation:float 3s ease-in-out infinite;filter:drop-shadow(0 8px 24px rgba(102,126,234,.3));color:var(--primary)}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}.welcome-screen h2{font-size:28px;font-weight:700;margin-bottom:12px;color:var(--text);background:var(--primary-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.welcome-screen>p{font-size:15px;color:var(--text-secondary);max-width:520px;line-height:1.8;margin-bottom:32px}.welcome-tip{margin-top:24px!important;margin-bottom:0!important;font-size:13px!important;color:var(--text-muted)!important;background:var(--bg-card);padding:10px 20px;border-radius:24px;border:1.5px dashed 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var(--transition)}.message:hover{background:var(--bg-subtle);border-radius:var(--radius)}.message.user{flex-direction:row-reverse}.message-avatar{width:38px;height:38px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0;background:var(--bg-card);box-shadow:var(--shadow-md);border:2px solid var(--border-light);transition:all var(--transition);color:var(--text-secondary)}.message:hover .message-avatar{transform:scale(1.08)}.message.user .message-avatar{background:var(--primary-gradient);border-color:transparent;color:#fff}.message.assistant .message-avatar{background:linear-gradient(135deg,#667eea,#764ba2);border-color:transparent;color:#fff}.message-content{max-width:78%;min-width:0;display:flex;flex-direction:column;gap:8px}.message.user .message-content{align-items:flex-end}.message-text{padding:14px 18px;border-radius:var(--radius);line-height:1.75;font-size:14.5px;word-break:break-word;transition:all var(--transition)}.message.user 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var(--transition)}.att-preview.error{border-color:#fca5a5}.att-preview.image,.att-preview.file{width:72px;height:72px}.att-img{width:100%;height:100%;object-fit:cover}.att-file-badge{display:flex;flex-direction:column;align-items:center;justify-content:center;width:100%;height:100%;gap:2px;font-size:22px}.att-ext{font-size:10px;font-weight:700;color:var(--text-secondary);background:var(--bg);padding:1px 5px;border-radius:3px}.att-label{position:absolute;bottom:0;left:0;right:0;background:#0000008c;color:#fff;font-size:9px;text-align:center;padding:2px 3px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.att-remove{position:absolute;top:2px;right:2px;width:18px;height:18px;border-radius:50%;background:#0000008c;color:#fff;font-size:10px;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity var(--transition)}.att-preview:hover 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6px}.settings-btn{width:28px;height:28px;font-size:13px}.settings-dialog{width:340px}.settings-preset-btn{font-size:11px;padding:6px 10px}.clear-btn{padding:6px 10px;font-size:12px}.messages-container{padding:12px 0}.message{padding:8px 12px;gap:8px}.message-avatar{width:30px;height:30px;font-size:14px}.message-content{max-width:82%}.message-text{padding:10px 12px;font-size:14px}.welcome-screen{padding:24px 16px;min-height:45vh}.welcome-icon{font-size:44px}.welcome-screen h2{font-size:20px}.welcome-screen>p{font-size:13px}.quick-prompts{grid-template-columns:repeat(2,1fr);gap:8px}.quick-prompt-btn{padding:12px 8px;font-size:12px}.quick-prompt-btn span:first-child{font-size:22px}.attachment-bar{padding:8px 12px 0}.input-area{padding:10px 12px 8px}.input-wrapper{padding:6px;border-radius:20px;gap:6px}.attach-btn{width:32px;height:32px;font-size:16px}.chat-input{font-size:15px}.send-btn{width:34px;height:34px}}@media (max-width: 380px){.quick-prompts{grid-template-columns:1fr 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ease}.session-dropdown-header{padding:10px 14px;font-size:12px;font-weight:600;color:var(--text-muted);border-bottom:1px solid var(--border-light);position:sticky;top:0;background:var(--bg-card)}.session-item{padding:10px 14px;cursor:pointer;transition:background var(--transition);border-bottom:1px solid var(--border-light);position:relative}.session-item:last-child{border-bottom:none}.session-item:hover{background:var(--bg-subtle)}.session-item-title{font-size:13px;font-weight:600;color:var(--text);margin-bottom:4px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;padding-right:24px}.session-item-meta{font-size:11px;color:var(--text-muted);display:flex;align-items:center;gap:8px}.session-item-model{font-family:SF Mono,Fira Code,monospace;font-size:10px;padding:1px 5px;background:var(--bg-subtle);border-radius:3px}.session-del-btn{position:absolute;top:10px;right:10px;width:20px;height:20px;border-radius:50%;font-size:10px;display:flex;align-items:center;justify-content:center;color:var(--text-muted);opacity:0;transition:all var(--transition)}.session-item:hover .session-del-btn{opacity:1}.session-del-btn:hover{background:#fee2e2;color:#dc2626}.mcp-section{padding:8px 10px;border-top:1px solid var(--border-light)}.mcp-section-header{display:flex;align-items:center;justify-content:space-between;font-size:12px;font-weight:600;color:var(--text-secondary);margin-bottom:6px;padding:0 4px}.mcp-add-btn{width:24px;height:24px;border-radius:6px;font-size:16px;font-weight:700;display:flex;align-items:center;justify-content:center;background:var(--primary-gradient);color:#fff;transition:all var(--transition);box-shadow:0 2px 8px #6366f14d}.mcp-add-btn:hover{transform:scale(1.15);box-shadow:0 4px 12px #6366f180}.mcp-empty{font-size:11px;color:var(--text-muted);padding:6px 4px}.mcp-card{display:flex;align-items:center;justify-content:space-between;padding:6px 8px;border-radius:6px;background:var(--bg-subtle);margin-bottom:3px;transition:background var(--transition)}.mcp-card:hover{background:var(--bg-card)}.mcp-card-info{display:flex;flex-direction:column;gap:1px;min-width:0;flex:1}.mcp-card-name{font-size:12px;font-weight:600;color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.mcp-card-url{font-size:10px;color:var(--text-muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-family:SF Mono,Fira Code,monospace}.mcp-card-del{width:20px;height:20px;border-radius:50%;font-size:10px;display:flex;align-items:center;justify-content:center;color:var(--text-muted);opacity:0;transition:all var(--transition);flex-shrink:0}.mcp-card:hover .mcp-card-del{opacity:1}.mcp-card-del:hover{background:#fee2e2;color:#dc2626}.mcp-dialog{width:720px!important;max-width:94vw!important;border-radius:16px!important;overflow:hidden}.mcp-dialog .settings-header{padding:24px 28px 16px!important;border-bottom:1px solid var(--border-light);background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.mcp-dialog .settings-header h3{color:#fff;font-size:20px;font-weight:700}.mcp-dialog .settings-close{color:#fffc;background:#ffffff26}.mcp-dialog .settings-close:hover{background:#ffffff4d;color:#fff}.mcp-dialog .settings-body{padding:24px 28px 28px!important;max-height:70vh;overflow-y:auto}.mcp-dialog .settings-label{font-size:14px;font-weight:600;color:var(--text);margin-bottom:6px;display:block}.mcp-dialog .settings-input{width:100%;padding:12px 14px!important;border-radius:10px!important;border:1.5px solid var(--border)!important;font-size:14px!important;background:var(--bg-subtle);transition:all var(--transition);box-sizing:border-box}.mcp-dialog .settings-input:focus{border-color:var(--primary)!important;box-shadow:0 0 0 3px var(--primary-light)!important;background:var(--bg-card)!important}.mcp-dialog .settings-input::placeholder{color:var(--text-muted);font-weight:400}.mcp-dialog select.settings-input{-webkit-appearance:auto;-moz-appearance:auto;appearance:auto;cursor:pointer}.settings-textarea{resize:vertical;min-height:80px;font-family:SF Mono,Fira Code,monospace;font-size:13px!important;line-height:1.6}.settings-hint-inline{font-size:12px;color:var(--text-muted);font-weight:400;margin-left:6px}.mcp-test-result{margin-top:16px;padding:12px 16px;border-radius:10px;font-size:14px;font-weight:500;display:flex;align-items:center;gap:8px}.mcp-test-result.success{background:#ecfdf5;color:#059669;border:1px solid #a7f3d0}.mcp-test-result.fail{background:#fef2f2;color:#dc2626;border:1px solid #fecaca}.mcp-dialog .settings-input-row{display:flex;gap:12px;margin-top:20px}.mcp-dialog .settings-input-row button{flex:1;padding:12px 20px!important;border-radius:10px!important;font-size:14px!important;font-weight:600!important;cursor:pointer;transition:all var(--transition)}.mcp-test-btn{background:var(--bg-card)!important;color:var(--text)!important;border:1.5px solid var(--border)!important;box-shadow:none!important}.mcp-test-btn:hover:not(:disabled){border-color:var(--primary)!important;color:var(--primary)!important;transform:translateY(-1px);box-shadow:0 4px 12px #6366f126!important}.mcp-dialog .settings-save-btn{background:var(--primary-gradient)!important;color:#fff!important;border:none!important}.mcp-dialog .settings-save-btn:hover:not(:disabled){box-shadow:0 4px 16px #6366f166!important;transform:translateY(-1px)}.mcp-dialog .settings-save-btn:disabled,.mcp-dialog .mcp-test-btn:disabled{opacity:.5;cursor:not-allowed;transform:none!important}.mcp-dialog .settings-label+.settings-input{margin-top:0}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}:root{--primary: #6366f1;--primary-hover: #4f46e5;--primary-light: #e0e7ff;--primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);--bg: #f5f7fa;--bg-card: #ffffff;--bg-subtle: #f8fafc;--text: #1a1a2e;--text-secondary: #6b7280;--text-muted: #9ca3af;--border: #e5e7eb;--border-light: #f3f4f6;--shadow: 0 1px 3px rgba(0, 0, 0, .06);--shadow-md: 0 4px 12px rgba(0, 0, 0, .08);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .12);--shadow-glow: 0 0 20px rgba(99, 102, 241, .15);--radius: 14px;--radius-sm: 10px;--radius-lg: 18px;--transition: all .25s cubic-bezier(.4, 0, .2, 1)}html,body{height:100%;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;font-size:15px;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}#root{height:100%}button{cursor:pointer;border:none;background:none;font-family:inherit;font-size:inherit}textarea{font-family:inherit;resize:none}pre{font-family:SF Mono,Fira Code,Cascadia Code,monospace;font-size:13px}