:root{--color-bg-base:#ffffff;--color-bg-surface:#f8fafc;--color-bg-raised:#f1f5f9;--color-bg-overlay:#ffffff;--color-border:#e2e8f0;--color-border-subtle:#f1f5f9;--color-text-primary:#0f172a;--color-text-secondary:#64748b;--color-text-muted:#94a3b8;--color-text-disabled:#cbd5e1;--color-text-link:#7c3aed;--color-text-inverse:#0f172a;--color-accent:#7c3aed;--color-accent-hover:#8b5cf6;--color-accent-subtle:#f5f3ff;--color-accent-muted:#6d28d9;--color-text-on-accent:#ffffff;--color-success:#10b981;--color-success-subtle:#ecfdf5;--color-warning:#fbbf24;--color-warning-subtle:#fffbeb;--color-error:#ef4444;--color-error-subtle:#fef2f2;--color-info:#38bdf8;--color-info-subtle:#f0f9ff;--color-provider-openai:#34d399;--color-provider-anthropic:#a78bfa;--color-provider-gemini:#38bdf8;--color-tier-nano:#94a3b8;--color-tier-sub:#38bdf8;--color-tier-main:#a78bfa;--font-sans:"Inter","Geist",system-ui,sans-serif;--font-mono:"JetBrains Mono","Fira Code",monospace;--text-xs:11px;--text-xs-line:1.4;--text-sm:13px;--text-sm-line:1.5;--text-base:15px;--text-base-line:1.6;--text-lg:17px;--text-lg-line:1.5;--text-xl:20px;--text-xl-line:1.4;--text-2xl:24px;--text-2xl-line:1.3;--text-3xl:30px;--text-3xl-line:1.2;--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:20px;--space-6:24px;--space-7:28px;--space-8:32px;--space-9:36px;--space-10:40px;--space-11:44px;--space-12:48px;--space-13:52px;--space-14:56px;--space-15:60px;--space-16:64px;--radius-sm:4px;--radius-md:8px;--radius-lg:12px;--radius-xl:16px;--radius-full:9999px;--duration-fast:100ms;--duration-base:200ms;--duration-slow:300ms;--shadow-sm:0 1px 2px rgba(0,0,0,0.05);--shadow-md:0 4px 6px rgba(0,0,0,0.07),0 1px 3px rgba(0,0,0,0.06);--shadow-lg:0 10px 15px rgba(0,0,0,0.1),0 4px 6px rgba(0,0,0,0.05);--shadow-xl:0 20px 25px rgba(0,0,0,0.1),0 8px 10px rgba(0,0,0,0.04);--z-modal:1000;--z-drawer:1000;--z-tooltip:1100;--z-toast:1200}[data-theme=dark]{--color-bg-base:#09090f;--color-bg-surface:#0f1117;--color-bg-raised:#1a1d2e;--color-bg-overlay:#1e2130;--color-border:#2d3148;--color-border-subtle:#1a1d2e;--color-text-primary:#f8fafc;--color-text-secondary:#94a3b8;--color-text-muted:#64748b;--color-text-disabled:#475569;--color-text-link:#a78bfa;--color-text-inverse:#0f172a;--color-text-on-accent:#ffffff;--color-accent-subtle:#2e1065;--color-accent-muted:#ddd6fe;--color-success-subtle:#022c22;--color-warning-subtle:#1c0a00;--color-error-subtle:#2d0a0a;--color-info-subtle:#03111c}