:root{--bg:#fafafa;--bg-elevated:#fff;--bg-soft:#f4f4f5;--border:#e8e8ea;--text:#18181b;--text-muted:#71717a;--text-faint:#a1a1aa;--accent:#e11d3c;--accent-soft:#fdeaec;--accent-contrast:#fff;--user-bubble:#18181b;--user-bubble-text:#fafafa;--assistant-bubble:#fff;--radius-lg:20px;--radius-md:14px;--radius-sm:10px;--shadow-sm:0 1px 2px #18181b0a, 0 1px 1px #18181b08;--shadow-md:0 8px 24px #18181b14;--font-sans:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--font-display:"Plus Jakarta Sans", var(--font-sans);--font-mono:ui-monospace, "SF Mono", Menlo, Consolas, monospace}*{box-sizing:border-box}html,body{height:100%}body{background:var(--bg);color:var(--text);font-family:var(--font-sans);-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;font-feature-settings:"cv11", "ss01";margin:0}h1,h2,h3,.sidebar-brand,.mobile-header-title{font-family:var(--font-display);letter-spacing:-.02em;font-weight:700}#root{height:100%}button{font-family:inherit}a{color:inherit}.icon-button{border-radius:var(--radius-sm);width:38px;height:38px;color:var(--text-muted);cursor:pointer;background:0 0;border:1px solid #0000;justify-content:center;align-items:center;transition:background .15s,color .15s;display:inline-flex}.icon-button:hover{background:var(--bg-soft);color:var(--text)}.primary-button{border-radius:var(--radius-sm);background:var(--text);color:var(--bg-elevated);cursor:pointer;border:none;align-items:center;gap:8px;padding:10px 16px;font-size:14px;font-weight:600;transition:transform .1s,opacity .15s;display:inline-flex}.primary-button:hover{opacity:.85}.primary-button:active{transform:scale(.97)}.primary-button:disabled{opacity:.4;cursor:not-allowed}.app-shell{flex-direction:column;height:100dvh;display:flex}@media 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