:root{--bg:#f4f7fb;--surface:#fff;--surface-2:#f8fafc;--text:#172033;--muted:#6b7280;--border:#e5eaf1;--primary:#2563eb;--primary-dark:#1d4ed8;--success:#15803d;--success-bg:#dcfce7;--danger:#b91c1c;--danger-bg:#fee2e2;--warning:#a16207;--warning-bg:#fef3c7;--shadow:0 8px 24px rgba(15,23,42,.06);--radius:14px;--sidebar:260px}*{box-sizing:border-box}html,body{margin:0;min-height:100%;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--text);font-size:14px}body.dark{--bg:#0f172a;--surface:#111c31;--surface-2:#17233b;--text:#e5eaf3;--muted:#9aa8bd;--border:#293852;--shadow:0 8px 24px rgba(0,0,0,.18)}a{color:inherit;text-decoration:none}.app-shell{min-height:100vh}.sidebar{position:fixed;inset:0 auto 0 0;width:var(--sidebar);background:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;z-index:30;transition:transform .2s 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