:root{--color-bg-primary: #ffffff;--color-bg-secondary: #f9fafb;--color-bg-tertiary: #f3f4f6;--color-bg-sidebar: #f9fafb;--color-bg-header: #18181b;--color-bg-input: #ffffff;--color-bg-hover: #f3f4f6;--color-bg-active: #e5e7eb;--color-bg-code: #f3f4f6;--color-text-primary: #18181b;--color-text-secondary: #52525b;--color-text-tertiary: #a1a1aa;--color-text-inverse: #ffffff;--color-text-link: #2563eb;--color-border: #e5e7eb;--color-border-light: #f3f4f6;--color-border-focus: #2563eb;--color-accent-blue: #2563eb;--color-accent-blue-light: #dbeafe;--color-severity-critical: #dc2626;--color-severity-critical-bg: #fef2f2;--color-severity-high: #ea580c;--color-severity-high-bg: #fff7ed;--color-severity-medium: #ca8a04;--color-severity-medium-bg: #fefce8;--color-severity-low: #6b7280;--color-severity-low-bg: #f9fafb;--color-highlight: #fef9c3;--color-overlay-backdrop: rgba(24, 24, 27, .35);--color-header-active-border: rgba(255, 255, 255, .2);--color-header-active-bg: rgba(255, 255, 255, .08);--color-focus-ring: rgba(37, 99, 235, .14);--space-xs: 4px;--space-sm: 8px;--space-md: 12px;--space-lg: 16px;--space-xl: 24px;--space-2xl: 32px;--space-3xl: 48px;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono: "SF Mono", "Cascadia Code", "Fira Code", Consolas, monospace;--text-xs: .75rem;--text-sm: .8125rem;--text-base: .875rem;--text-lg: 1rem;--text-xl: 1.125rem;--text-2xl: 1.5rem;--radius-sm: 4px;--radius-md: 6px;--radius-lg: 8px;--radius-full: 9999px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 2px 8px rgba(0, 0, 0, .08);--shadow-lg: 0 4px 16px rgba(0, 0, 0, .1);--duration-fast: .15s;--duration-normal: .2s;--transition-ui: var(--duration-fast) ease;--header-height: 48px;--sidebar-width: 260px;--preview-width: 420px;--max-chat-width: 720px;--history-sidebar-collapsed-width: 64px;--explorer-tree-width: 300px;--explorer-content-max-width: 980px;--quick-link-content-max-width: 1000px;--welcome-max-width: 500px;--login-card-max-width: 360px;--source-preview-min-width: 320px;--citation-section-max-width: 280px;--file-tree-chevron-width: 12px;--clipboard-offscreen-left: -9999px;--quick-links-bar-height: 42px;--line-height-markdown: 1.7;--space-markdown-h2-top: 2.5rem;--space-markdown-h2-bottom: 1rem;--space-markdown-h3-top: 2rem;--space-markdown-h3-bottom: .75rem;--space-markdown-h4-top: 1.5rem;--space-markdown-h4-bottom: .5rem;--space-markdown-paragraph-bottom: 1rem;--space-markdown-list-item-bottom: .5rem}*,*:before,*:after{box-sizing:border-box}html,body,#root{min-height:100%}body{margin:0;padding:0;background:var(--color-bg-primary);color:var(--color-text-primary);font-family:var(--font-sans);font-size:var(--text-base);line-height:1.5;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}button,input,textarea{color:inherit;font:inherit}a{color:var(--color-text-link)}p{margin:0}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.markdown-renderer{max-width:var(--max-chat-width);color:var(--color-text-primary)}.markdown-renderer h1{margin:0 0 var(--space-markdown-h2-bottom);font-size:var(--text-lg);font-weight:500;line-height:1.4}.markdown-renderer h2{margin:var(--space-markdown-h2-top) 0 var(--space-markdown-h2-bottom);font-size:var(--text-lg);font-weight:500;line-height:1.4}.markdown-renderer h3{margin:var(--space-markdown-h3-top) 0 var(--space-markdown-h3-bottom);font-size:var(--text-base);font-weight:500;line-height:1.4}.markdown-renderer h4,.markdown-renderer h5,.markdown-renderer h6{margin:var(--space-markdown-h4-top) 0 var(--space-markdown-h4-bottom);font-size:var(--text-base);font-weight:500;line-height:1.4}.markdown-renderer p{margin:0 0 var(--space-markdown-paragraph-bottom);font-size:var(--text-base);line-height:var(--line-height-markdown)}.markdown-renderer ul,.markdown-renderer ol{margin:0 0 var(--space-markdown-paragraph-bottom);padding-left:var(--space-xl)}.markdown-renderer li{margin-bottom:var(--space-markdown-list-item-bottom)}.markdown-renderer a{color:var(--color-text-link);text-decoration:none}.markdown-renderer a:hover{text-decoration:underline}.markdown-renderer code{border-radius:var(--radius-sm);background:var(--color-bg-code);font-family:var(--font-mono);font-size:var(--text-sm);padding:1px var(--space-xs)}.markdown-renderer pre{margin:0 0 var(--space-md);overflow-x:auto;border-radius:var(--radius-md);background:var(--color-bg-code);padding:var(--space-md)}.markdown-renderer pre code{padding:0;background:transparent}.markdown-renderer table{width:100%;border-collapse:collapse;margin:0 0 var(--space-lg);font-size:var(--text-sm);overflow-x:auto}.markdown-renderer th,.markdown-renderer td{border:1px solid var(--color-border);padding:var(--space-sm);text-align:left;vertical-align:top}.markdown-renderer tbody tr:nth-child(2n){background:var(--color-bg-secondary)}.markdown-renderer blockquote{margin:0 0 var(--space-md);border-left:3px solid var(--color-border);color:var(--color-text-secondary);padding-left:var(--space-md)}.severity-badge{display:inline-block;margin:0 .2rem;border-radius:var(--radius-full);font-size:var(--text-xs);font-weight:500;line-height:1;padding:var(--space-xs) 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var(--space-sm);transition:color var(--transition-ui)}.quick-links__button:hover{color:var(--color-text-primary)}.source-citation-group__label{margin-top:1rem;color:var(--color-text-tertiary);font-size:var(--text-xs)}.source-citation-pills{display:flex;flex-wrap:wrap;gap:var(--space-sm);margin-top:var(--space-sm)}.source-citation-pill{max-width:100%;border:1px solid var(--color-border);border-radius:var(--radius-full);background:var(--color-bg-secondary);color:var(--color-text-secondary);cursor:pointer;font-size:var(--text-xs);line-height:1.3;padding:var(--space-xs) var(--space-md);transition:color var(--transition-ui),background-color var(--transition-ui),border-color 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var(--space-2xl));font-family:var(--font-mono);font-size:var(--text-sm);color:var(--color-text-secondary);overflow-wrap:anywhere}.source-preview__section{margin-top:var(--space-xs);color:var(--color-text-primary);font-size:var(--text-sm);font-weight:500}.source-preview__content{padding:var(--space-lg);overflow-x:auto;overflow-wrap:anywhere;word-break:break-word}.source-preview__content .markdown-renderer table{min-width:max-content}.source-preview__content .markdown-renderer{overflow-wrap:anywhere;word-break:break-word}[data-section-highlight=true]{border-radius:var(--radius-sm);background-color:var(--color-highlight)}@media (max-width: 767px){.source-preview{position:fixed;top:0;right:0;bottom:0;left:0;z-index:50;flex:none;width:auto;min-width:0}.source-preview__panel{position:fixed;top:0;right:0;bottom:0;left:0;width:100%;max-width:none;min-width:0;border-left:none;box-shadow:var(--shadow-lg)}}@media (min-width: 768px){.source-preview__backdrop{display:none}}.chat-view{min-height:calc(100vh - var(--header-height));background:var(--color-bg-primary)}.chat-layout{display:flex;min-height:calc(100vh - var(--header-height) - var(--quick-links-bar-height));background:var(--color-bg-primary)}.chat-main{position:relative;flex:1 1 auto;min-width:0;display:flex;min-height:calc(100vh - var(--header-height) - var(--quick-links-bar-height))}.chat-main--with-preview{flex:1 1 calc(100% - var(--preview-width));max-width:calc(100% - var(--preview-width))}.chat-quick-link-document{width:min(100%,var(--quick-link-content-max-width));margin:0 auto;padding:var(--space-xl)}.chat-quick-link-back{border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-bg-secondary);color:var(--color-text-secondary);cursor:pointer;font-size:var(--text-sm);font-weight:500;padding:var(--space-xs) var(--space-md);transition:color var(--transition-ui),background-color var(--transition-ui),border-color 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var(--transition-ui)}.chat-example-chip:hover{color:var(--color-text-primary);border-color:var(--color-border-focus);background:var(--color-bg-hover)}.chat-example-chip:disabled{cursor:not-allowed;opacity:.6}.chat-input-wrap{position:sticky;bottom:0;border-top:1px solid var(--color-border);background:var(--color-bg-primary);padding:var(--space-md) var(--space-xl) var(--space-lg)}.chat-input-form{width:100%;margin:0;display:flex;gap:var(--space-sm);align-items:center}.chat-input{flex:1 1 auto;border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-bg-input);padding:var(--space-sm) var(--space-md);transition:border-color var(--transition-ui),box-shadow var(--transition-ui)}.chat-input:focus{outline:none;border-color:var(--color-border-focus);box-shadow:0 0 0 var(--space-xs) var(--color-focus-ring)}.chat-send,.chat-stop{border-radius:var(--radius-md);cursor:pointer;font-size:var(--text-sm);font-weight:500;padding:var(--space-sm) var(--space-md);transition:color var(--transition-ui),background-color var(--transition-ui),border-color var(--transition-ui),opacity var(--transition-ui)}.chat-send{border:1px solid var(--color-accent-blue);background:var(--color-accent-blue);color:var(--color-text-inverse)}.chat-send:disabled{opacity:.6;cursor:not-allowed}.chat-stop{border:1px solid var(--color-severity-critical);background:var(--color-bg-primary);color:var(--color-severity-critical)}.chat-stop:hover{background:var(--color-severity-critical-bg)}@media (max-width: 767px){.chat-main--with-preview{flex:1 1 auto;max-width:none}}.file-tree{width:100%}.file-tree__list{list-style:none;margin:0;padding-left:var(--space-md)}.file-tree__list--root{padding-left:0}.file-tree__row{margin-bottom:var(--space-xs)}.file-tree__button{width:100%;display:flex;align-items:center;gap:var(--space-xs);border:none;border-radius:var(--radius-md);background:transparent;color:var(--color-text-secondary);cursor:pointer;font-size:var(--text-sm);text-align:left;padding:var(--space-xs) var(--space-sm);transition:color var(--transition-ui),background-color var(--transition-ui)}.file-tree__button:hover{color:var(--color-text-primary);background:var(--color-bg-hover)}.file-tree__button--directory{color:var(--color-text-primary);font-weight:500}.file-tree__button--selected{color:var(--color-text-primary);background:var(--color-bg-active)}.file-tree__chevron{color:var(--color-text-tertiary);font-size:var(--text-xs);width:var(--file-tree-chevron-width);flex-shrink:0}.explorer-view{display:grid;grid-template-columns:var(--explorer-tree-width) minmax(0,1fr);min-height:calc(100vh - var(--header-height))}.explorer-view--tree-collapsed{grid-template-columns:0 minmax(0,1fr)}.explorer-view__tree-panel{border-right:1px solid var(--color-border);background:var(--color-bg-sidebar);overflow-y:auto;padding:var(--space-md);transition:transform var(--duration-normal) ease}.explorer-view--tree-collapsed .explorer-view__tree-panel{transform:translate(-100%)}.explorer-view__tree-header{margin-bottom:var(--space-md)}.explorer-view__tree-toggle{border:1px solid 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var(--transition-ui)}.explorer-view__tree-toggle:hover{color:var(--color-text-primary);border-color:var(--color-border-focus);background:var(--color-bg-hover)}.explorer-view__content-panel{min-width:0;overflow-y:auto;padding:var(--space-xl)}.explorer-view__content-inner{width:min(100%,var(--max-chat-width))}.explorer-view__breadcrumb{margin-bottom:var(--space-xl);color:var(--color-text-tertiary);font-family:var(--font-mono);font-size:var(--text-xs)}.explorer-view__empty{color:var(--color-text-tertiary);font-size:var(--text-sm);text-align:center;margin-top:var(--space-3xl)}.explorer-view__status{color:var(--color-text-secondary);font-size:var(--text-sm);margin-bottom:var(--space-md)}@media (max-width: 767px){.explorer-view{grid-template-columns:1fr}.explorer-view__tree-panel{position:fixed;inset:var(--header-height) auto 0 0;width:var(--sidebar-width);z-index:35;box-shadow:var(--shadow-lg)}.explorer-view--tree-collapsed .explorer-view__tree-panel{transform:translate(calc(-100% - var(--space-lg)))}}.login-view{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:var(--space-xl);background:var(--color-bg-secondary)}.login-view__card{width:100%;max-width:var(--login-card-max-width);border:1px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);background:var(--color-bg-primary);padding:var(--space-2xl)}.login-view__title{margin:0;text-align:center;font-size:var(--text-xl);font-weight:500}.login-view__subtitle{margin-top:var(--space-xs);text-align:center;font-size:var(--text-sm);color:var(--color-text-secondary)}.login-view__form{margin-top:var(--space-xl);display:flex;flex-direction:column;gap:var(--space-sm)}.login-view__label{font-size:var(--text-sm);color:var(--color-text-secondary)}.login-view__input{width:100%;border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-bg-input);padding:var(--space-md);transition:border-color var(--transition-ui),box-shadow var(--transition-ui)}.login-view__input:focus{outline:none;border-color:var(--color-border-focus);box-shadow:0 0 0 var(--space-xs) var(--color-focus-ring)}.login-view__submit{margin-top:var(--space-sm);border:1px solid var(--color-accent-blue);border-radius:var(--radius-md);background:var(--color-accent-blue);color:var(--color-text-inverse);cursor:pointer;font-size:var(--text-base);font-weight:500;padding:var(--space-sm) var(--space-md);transition:filter var(--transition-ui),opacity var(--transition-ui)}.login-view__submit:hover{filter:brightness(.96)}.login-view__submit:disabled{opacity:.65;cursor:not-allowed}.login-view__error{margin-top:var(--space-md);font-size:var(--text-sm);color:var(--color-severity-critical)}.app-shell{min-height:100vh;background:var(--color-bg-primary)}.app-shell__header{position:fixed;top:0;right:0;left:0;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:var(--space-lg);height:var(--header-height);padding:0 var(--space-lg);background:var(--color-bg-header);color:var(--color-text-inverse)}.app-shell__left{display:flex;align-items:center;gap:var(--space-lg);min-width:0}.app-shell__title{margin:0;font-size:var(--text-sm);font-weight:500;letter-spacing:.01em}.app-shell__nav{display:flex;align-items:center;gap:var(--space-sm)}.app-shell__nav-link{border:1px solid transparent;border-radius:var(--radius-full);color:var(--color-text-tertiary);font-size:var(--text-sm);font-weight:500;padding:var(--space-xs) var(--space-md);text-decoration:none;transition:color var(--transition-ui),background-color var(--transition-ui),border-color var(--transition-ui)}.app-shell__nav-link:hover{color:var(--color-text-inverse)}.app-shell__nav-link[aria-current=page]{border-color:var(--color-header-active-border);color:var(--color-text-inverse);background:var(--color-header-active-bg)}.app-shell__logout{border:none;background:none;color:var(--color-text-tertiary);cursor:pointer;font-size:var(--text-sm);font-weight:500;padding:var(--space-xs) var(--space-sm);transition:color var(--transition-ui)}.app-shell__logout:hover{color:var(--color-text-inverse)}.app-shell__panel-toggle{border:none;background:none;color:var(--color-text-tertiary);cursor:pointer;font-size:var(--text-sm);font-weight:500;padding:var(--space-xs) var(--space-sm);transition:color var(--transition-ui)}.app-shell__panel-toggle:hover{color:var(--color-text-inverse)}.app-shell__actions{display:flex;align-items:center;gap:var(--space-xs)}.app-shell__content{padding-top:var(--header-height)}.app-shell__view{min-height:calc(100vh - var(--header-height))}.app-shell__view--hidden{display:none}@media (min-width: 768px){.app-shell__panel-toggle{display:none}}