@import"https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap";:root{--bg-primary: #191919;--bg-secondary: #1e1e1e;--bg-tertiary: #252525;--bg-elevated: #2a2a2a;--bg-hover: #303030;--bg-active: #383838;--bg-input: #232323;--bg-input-focus: #282828;--bg-code: #1a1a2e;--bg-code-header: #16162a;--bg-sidebar: #171717;--bg-message-user: #2a2a2a;--bg-message-assistant: transparent;--attachment-table-card-bg: var(--bg-message-user);--attachment-table-card-border: rgba(255, 255, 255, .1);--attachment-table-surface: rgba(10, 11, 13, .2);--attachment-table-header-bg: rgba(255, 255, 255, .06);--attachment-table-tab-bg: rgba(255, 255, 255, .03);--attachment-table-tab-hover-bg: rgba(255, 255, 255, .05);--attachment-table-tab-active-bg: rgba(255, 255, 255, .08);--attachment-table-grid: rgba(255, 255, 255, .08);--attachment-table-grid-soft: rgba(255, 255, 255, .05);--attachment-table-row-hover: rgba(255, 255, 255, .03);--attachment-table-index-bg: rgba(255, 255, 255, .04);--attachment-table-scrollbar-track: rgba(255, 255, 255, .03);--attachment-table-scrollbar-thumb: rgba(255, 255, 255, .22);--attachment-card-shadow: 0 14px 34px rgba(0, 0, 0, .18), inset 0 1px 0 rgba(255, 255, 255, .03);--bg-overlay: rgba(0, 0, 0, .6);--bg-toast: #2d2d2d;--text-primary: #ececec;--text-secondary: #b0b0b0;--text-tertiary: #808080;--text-muted: #5a5a5a;--text-inverse: #191919;--text-link: #c49a6c;--text-code: #e2e8f0;--accent-primary: #c49a6c;--accent-primary-hover: #d4aa7c;--accent-secondary: #8b7355;--accent-success: #4ade80;--accent-warning: #fbbf24;--accent-error: #f87171;--accent-info: #60a5fa;--border-subtle: #2a2a2a;--border-default: #333333;--border-hover: #444444;--border-focus: #c49a6c;--border-input: #333333;--radius-xs: 4px;--radius-sm: 6px;--radius-md: 8px;--radius-lg: 10px;--radius-xl: 14px;--radius-full: 9999px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .3);--shadow-md: 0 4px 12px rgba(0, 0, 0, .3);--shadow-lg: 0 8px 30px rgba(0, 0, 0, .4);--shadow-xl: 0 16px 50px rgba(0, 0, 0, .5);--shadow-glow: 0 0 20px rgba(196, 154, 108, .15);--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-mono: "JetBrains Mono", "Fira Code", "Consolas", monospace;--text-xs: .75rem;--text-sm: .8125rem;--text-base: .9375rem;--text-lg: 1.0625rem;--text-xl: 1.25rem;--text-2xl: 1.5rem;--text-3xl: 1.875rem;--leading-tight: 1.3;--leading-normal: 1.6;--leading-relaxed: 1.75;--sidebar-width: 340px;--sidebar-collapsed: 64px;--input-max-width: 768px;--chat-max-width: 768px;--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-normal: .25s cubic-bezier(.4, 0, .2, 1);--transition-slow: .4s cubic-bezier(.4, 0, .2, 1);--z-sidebar: 40;--z-header: 30;--z-modal-backdrop: 50;--z-modal: 60;--z-toast: 70;--z-tooltip: 80}[data-theme=light],.light-theme{--bg-primary: #ffffff;--bg-secondary: #f9f9f9;--bg-tertiary: #f0f0f0;--bg-elevated: #e8e8e8;--bg-hover: #ebebeb;--bg-active: #e0e0e0;--bg-input: #f5f5f5;--bg-input-focus: #f0f0f0;--bg-code: #f4f4f8;--bg-code-header: #eaeaf0;--bg-sidebar: #f5f5f5;--bg-message-user: #f0f0f0;--bg-message-assistant: transparent;--attachment-table-card-bg: var(--bg-message-user);--attachment-table-card-border: rgba(0, 0, 0, .1);--attachment-table-surface: rgba(255, 255, 255, .72);--attachment-table-header-bg: rgba(0, 0, 0, .05);--attachment-table-tab-bg: rgba(0, 0, 0, .03);--attachment-table-tab-hover-bg: rgba(0, 0, 0, .05);--attachment-table-tab-active-bg: rgba(0, 0, 0, .08);--attachment-table-grid: rgba(0, 0, 0, .1);--attachment-table-grid-soft: rgba(0, 0, 0, .06);--attachment-table-row-hover: rgba(0, 0, 0, .025);--attachment-table-index-bg: rgba(0, 0, 0, .04);--attachment-table-scrollbar-track: rgba(0, 0, 0, .03);--attachment-table-scrollbar-thumb: rgba(0, 0, 0, .2);--attachment-card-shadow: 0 10px 24px rgba(15, 23, 42, .06), 0 2px 6px rgba(15, 23, 42, .04);--bg-overlay: rgba(0, 0, 0, .35);--bg-toast: #ffffff;--text-primary: #1a1a1a;--text-secondary: #555555;--text-tertiary: #888888;--text-muted: #aaaaaa;--text-inverse: #ffffff;--text-link: #9b6f3f;--text-code: #2d2d3f;--accent-primary: #b5854b;--accent-primary-hover: #a07540;--accent-secondary: #8b7355;--accent-success: #22c55e;--accent-warning: #eab308;--accent-error: #ef4444;--accent-info: #3b82f6;--border-subtle: #e5e5e5;--border-default: #d4d4d4;--border-hover: #c0c0c0;--border-focus: #b5854b;--border-input: #d4d4d4;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .06);--shadow-md: 0 4px 12px rgba(0, 0, 0, .08);--shadow-lg: 0 8px 30px rgba(0, 0, 0, .1);--shadow-xl: 0 16px 50px rgba(0, 0, 0, .12);--shadow-glow: 0 0 20px rgba(181, 133, 75, .1)}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility}body{font-family:var(--font-sans);background-color:var(--bg-primary);color:var(--text-primary);line-height:var(--leading-normal);overflow:hidden;height:100vh;width:100vw}#root{height:100vh;width:100vw;overflow:hidden}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border-default);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--border-hover)}::selection{background:#c49a6c4d;color:var(--text-primary)}a{color:var(--text-link);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--accent-primary-hover)}:focus-visible{outline:2px solid var(--accent-primary);outline-offset:2px}button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit;font-size:inherit}input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;background:transparent;border:none;outline:none}.app-layout{display:flex;height:100vh;width:100vw;overflow:hidden}.sidebar{width:var(--sidebar-width);min-width:var(--sidebar-width);height:100vh;background:var(--bg-sidebar);border-right:1px solid var(--border-subtle);display:flex;flex-direction:column;transition:width var(--transition-normal),min-width var(--transition-normal);z-index:var(--z-sidebar);overflow:hidden;position:relative}.sidebar.collapsed{width:80px;min-width:80px;border-right:1px solid var(--border-subtle)}.sidebar.collapsed .sidebar-actions,.sidebar.collapsed .sidebar-nav,.sidebar.collapsed .sidebar-search,.sidebar.collapsed .sidebar-content,.sidebar.collapsed .sidebar-footer,.sidebar.collapsed .sidebar-brand{display:none}.sidebar.collapsed .sidebar-header{justify-content:center;padding:12px 8px}.sidebar-icon-rail{display:none;flex-direction:column;justify-content:space-between;align-items:stretch;gap:2px;padding:4px 8px 12px;flex:1;overflow:hidden}.sidebar.collapsed .sidebar-icon-rail{display:flex}.sidebar-rail-top,.sidebar-rail-bottom{display:flex;flex-direction:column;align-items:stretch;gap:2px}.sidebar-rail-bottom{margin-top:auto}.sidebar-rail-btn{display:flex;align-items:center;justify-content:center;width:100%;height:44px;border-radius:var(--radius-sm);color:var(--text-secondary);transition:all var(--transition-fast);flex-shrink:0}.sidebar-rail-btn:hover{background:var(--bg-hover);color:var(--text-primary)}.sidebar-rail-btn.active{background:var(--bg-active);color:var(--text-primary)}.sidebar-rail-btn.rail-logout:hover{background:#f871711a;color:var(--accent-error)}.sidebar-header{display:flex;align-items:center;justify-content:space-between;padding:16px 16px 12px;flex-shrink:0}.sidebar-brand{display:flex;align-items:center;gap:10px}.sidebar-brand-name{font-size:var(--text-lg);font-weight:600;color:var(--text-primary);letter-spacing:-.02em}.sidebar-close-btn{display:flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:var(--radius-sm);color:var(--text-secondary);transition:all var(--transition-fast)}.sidebar-close-btn:hover{background:var(--bg-hover);color:var(--text-primary)}.sidebar-actions{padding:0 12px 12px;flex-shrink:0}.new-chat-btn{display:flex;align-items:center;gap:10px;width:100%;padding:10px 14px;border-radius:var(--radius-md);color:var(--text-secondary);font-size:var(--text-sm);font-weight:500;transition:all var(--transition-fast);border:1px solid var(--border-subtle)}.new-chat-btn:hover{background:var(--bg-hover);color:var(--text-primary);border-color:var(--border-default)}.new-chat-btn svg{flex-shrink:0}.sidebar-tabs{display:flex;padding:0 12px;gap:2px;flex-shrink:0;margin-bottom:8px}.sidebar-tab{flex:1;padding:8px 12px;border-radius:var(--radius-sm);font-size:var(--text-sm);font-weight:500;color:var(--text-tertiary);transition:all var(--transition-fast);text-align:center}.sidebar-tab:hover{color:var(--text-secondary);background:var(--bg-hover)}.sidebar-tab.active{color:var(--text-primary);background:var(--bg-elevated)}.sidebar-search{padding:0 12px 8px;flex-shrink:0}.sidebar-search-input{width:100%;padding:8px 12px 8px 34px;border-radius:var(--radius-sm);background:var(--bg-input);border:1px solid var(--border-subtle);color:var(--text-primary);font-size:var(--text-sm);transition:all var(--transition-fast)}.sidebar-search-input:focus{border-color:var(--border-focus);background:var(--bg-input-focus)}.sidebar-search-input::placeholder{color:var(--text-muted)}.sidebar-search-wrapper{position:relative}.sidebar-search-icon{position:absolute;left:10px;top:50%;transform:translateY(-50%);color:var(--text-muted);pointer-events:none}.sidebar-content{flex:1;overflow-y:auto;overflow-x:hidden;padding:0 8px}.chat-group-label{padding:12px 8px 6px;font-size:var(--text-xs);font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em}.chat-list-item{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition-fast);position:relative}.chat-list-item:hover{background:var(--bg-hover)}.chat-list-item.active{background:var(--bg-active)}.chat-list-item-icon{flex-shrink:0;color:var(--text-tertiary)}.chat-list-item-content{flex:1;min-width:0}.chat-list-item-title{font-size:var(--text-sm);color:var(--text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;transition:color var(--transition-fast)}.chat-list-item:hover .chat-list-item-title,.chat-list-item.active .chat-list-item-title{color:var(--text-primary)}.chat-list-item-actions{display:flex;gap:2px;opacity:0;transition:opacity var(--transition-fast)}.chat-list-item:hover .chat-list-item-actions{opacity:1}.chat-action-btn{display:flex;align-items:center;justify-content:center;width:26px;height:26px;border-radius:var(--radius-xs);color:var(--text-tertiary);transition:all var(--transition-fast)}.chat-action-btn:hover{background:var(--bg-elevated);color:var(--text-primary)}.project-list-item{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition-fast)}.project-list-item:hover{background:var(--bg-hover)}.project-list-item.active{background:var(--bg-active)}.project-color-dot{width:10px;height:10px;border-radius:var(--radius-full);flex-shrink:0}.project-item-name{flex:1;font-size:var(--text-sm);color:var(--text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.project-item-count{font-size:var(--text-xs);color:var(--text-muted);background:var(--bg-elevated);padding:2px 8px;border-radius:var(--radius-full)}.sidebar-footer{padding:8px 10px 12px;border-top:1px solid var(--border-subtle);flex-shrink:0;display:flex;flex-direction:column;gap:2px}.sidebar-user-info-display{padding:8px 10px 10px;text-align:left}.sidebar-footer-actions{display:flex;flex-direction:column;gap:2px}.sidebar-icon-btn{display:flex;align-items:center;gap:10px;width:100%;padding:9px 12px;border-radius:var(--radius-sm);color:var(--text-secondary);font-size:var(--text-sm);font-weight:500;border:none;transition:all var(--transition-fast);text-align:left}.sidebar-icon-btn:hover{background:var(--bg-hover);color:var(--text-primary)}.sidebar-icon-btn.logout:hover{background:#f871711a;color:var(--accent-error)}.sidebar-user-btn{display:flex;align-items:center;gap:10px;width:100%;padding:8px 10px;border-radius:var(--radius-sm);transition:all var(--transition-fast)}.sidebar-user-btn:hover{background:var(--bg-hover)}.sidebar-user-avatar{width:32px;height:32px;border-radius:var(--radius-full);background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));display:flex;align-items:center;justify-content:center;font-size:var(--text-sm);font-weight:600;color:var(--text-inverse);flex-shrink:0}.sidebar-user-info{flex:1;min-width:0;text-align:left}.sidebar-user-name{font-size:var(--text-sm);font-weight:500;color:var(--text-primary)}.sidebar-user-plan{font-size:var(--text-xs);color:var(--text-muted)}.main-content{flex:1;display:flex;flex-direction:column;height:100vh;overflow:hidden;position:relative;background:var(--bg-primary)}.top-bar{display:flex;align-items:center;justify-content:space-between;padding:10px 20px;border-bottom:1px solid transparent;flex-shrink:0;min-height:52px;transition:border-color var(--transition-fast)}.top-bar.scrolled{border-bottom-color:var(--border-subtle)}.top-bar-left{display:flex;align-items:center;gap:10px}.menu-toggle-btn{display:flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:var(--radius-sm);color:var(--text-secondary);transition:all var(--transition-fast)}.menu-toggle-btn:hover{background:var(--bg-hover);color:var(--text-primary)}.top-bar-title{font-size:var(--text-sm);font-weight:500;color:var(--text-secondary);max-width:400px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.top-bar-right{display:flex;align-items:center;gap:6px}.top-bar-btn{display:flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:var(--radius-sm);color:var(--text-secondary);transition:all var(--transition-fast)}.top-bar-btn:hover{background:var(--bg-hover);color:var(--text-primary)}.model-selector{display:flex;align-items:center;gap:6px;padding:6px 12px;border-radius:var(--radius-sm);background:var(--bg-tertiary);border:1px solid var(--border-subtle);cursor:pointer;transition:all var(--transition-fast);font-size:var(--text-sm);color:var(--text-secondary)}.model-selector:hover{background:var(--bg-hover);border-color:var(--border-default);color:var(--text-primary)}.model-selector-dropdown{position:absolute;top:100%;right:0;margin-top:4px;min-width:220px;background:var(--bg-elevated);border:1px solid var(--border-default);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);z-index:var(--z-tooltip);padding:6px;max-height:300px;overflow-y:auto}.model-option{display:flex;align-items:center;justify-content:space-between;padding:8px 12px;border-radius:var(--radius-sm);font-size:var(--text-sm);color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast)}.model-option:hover{background:var(--bg-hover);color:var(--text-primary)}.model-option.active{color:var(--accent-primary)}.model-option-size{font-size:var(--text-xs);color:var(--text-muted)}.chat-area{flex:1;min-height:0;overflow-y:auto;overflow-x:hidden;display:flex;flex-direction:column;padding-bottom:24px}.chat-messages{flex:1;display:flex;flex-direction:column;max-width:var(--chat-max-width);width:100%;margin:0 auto;padding:0 24px}.welcome-screen{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;max-width:var(--chat-max-width);width:100%;margin:0 auto;padding:40px 24px;gap:24px}.welcome-greeting{font-size:var(--text-3xl);font-weight:600;color:var(--text-primary);letter-spacing:-.03em;text-align:center}.welcome-greeting-accent{background:linear-gradient(135deg,var(--accent-primary),#e8b88a);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.welcome-subtitle{font-size:var(--text-base);color:var(--text-tertiary);text-align:center;max-width:500px}.welcome-suggestions{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:8px}.suggestion-chip{display:flex;align-items:center;gap:8px;padding:10px 16px;border-radius:var(--radius-full);background:var(--bg-tertiary);border:1px solid var(--border-subtle);font-size:var(--text-sm);color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast)}.suggestion-chip:hover{background:var(--bg-elevated);border-color:var(--border-default);color:var(--text-primary);transform:translateY(-1px);box-shadow:var(--shadow-sm)}.suggestion-chip svg{color:var(--accent-primary);flex-shrink:0}.message{display:flex;gap:16px;padding:16px 0;animation:messageIn .3s ease-out}.message-user{justify-content:flex-end}.message-assistant{justify-content:flex-start}@keyframes messageIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.message+.message{border-top:none}.message-bubble{background:var(--bg-message-user);padding:12px 16px;border-radius:18px 18px 4px;max-width:100%;width:fit-content;word-wrap:break-word;display:inline-block;line-height:1.5}.message-user .message-body{display:flex;justify-content:flex-end}.message-user-wrapper{display:flex;flex-direction:column;align-items:flex-end;gap:4px;max-width:calc(100% - 120px)}.message-attachments--user{display:flex;flex-wrap:wrap;gap:8px;justify-content:flex-end;margin-bottom:4px}.message-user-wrapper .message-bubble{max-width:100%;width:fit-content}.message-user-actions{display:flex;flex-direction:row;gap:4px;opacity:0;transition:opacity var(--transition-fast);justify-content:flex-end}.message-user:hover .message-user-actions{opacity:1}.message-assistant .message-body{max-width:100%}.message-role-indicator{width:28px;height:28px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:2px;font-size:var(--text-xs);font-weight:600}.message-role-indicator.user{background:var(--bg-elevated);color:var(--text-secondary)}.message-role-indicator.assistant{background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));color:var(--text-inverse)}.message-body{flex:1;min-width:0}.message-header{display:flex;align-items:center;gap:8px;margin-bottom:8px}.message-role-name{font-size:var(--text-sm);font-weight:600;color:var(--text-primary)}.message-timestamp{font-size:var(--text-xs);color:var(--text-muted)}.message-content{font-size:var(--text-base);line-height:var(--leading-relaxed);color:var(--text-primary)}.message-content h1{font-size:1.5rem;font-weight:700;margin:20px 0 10px;color:var(--text-primary);letter-spacing:-.02em}.message-content h2{font-size:1.25rem;font-weight:600;margin:18px 0 8px;color:var(--text-primary);letter-spacing:-.01em}.message-content h3{font-size:1.1rem;font-weight:600;margin:16px 0 6px;color:var(--text-primary)}.message-content h4,.message-content h5,.message-content h6{font-size:1rem;font-weight:600;margin:14px 0 4px;color:var(--text-secondary)}.message-content p{margin:8px 0}.message-content p:first-child{margin-top:0}.message-content strong{font-weight:600;color:var(--text-primary)}.message-content em{font-style:italic;color:var(--text-secondary)}.message-content ul,.message-content ol{margin:8px 0;padding-left:24px}.message-content li{margin:4px 0;line-height:var(--leading-relaxed)}.message-content li::marker{color:var(--text-tertiary)}.message-content blockquote{margin:12px 0;padding:10px 16px;border-left:3px solid var(--accent-primary);background:var(--bg-tertiary);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--text-secondary)}.message-content hr{border:none;border-top:1px solid var(--border-subtle);margin:16px 0}.message-content a{color:var(--accent-primary);text-decoration:underline;text-underline-offset:2px}.message-content a:hover{color:var(--accent-primary-hover)}.message-content code:not(pre code){font-family:var(--font-mono);font-size:.85em;padding:2px 6px;border-radius:var(--radius-xs);background:var(--bg-code);color:var(--accent-primary);border:1px solid var(--border-subtle)}.code-block-wrapper{margin:14px 0;border-radius:var(--radius-md);overflow:hidden;border:1px solid var(--border-subtle);background:var(--bg-code)}.code-block-header{display:flex;align-items:center;justify-content:space-between;padding:8px 14px;background:var(--bg-code-header);border-bottom:1px solid 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