*,:before,:after{box-sizing:border-box;margin:0;padding:0}:root{--sidebar-bg:#1a2744;--sidebar-width:240px;--primary:#3b82f6;--primary-hover:#2563eb;--success:#22c55e;--warning:#f59e0b;--danger:#ef4444;--surface:#fff;--surface-alt:#f1f5f9;--border:#e2e8f0;--text:#0f172a;--text-muted:#64748b;--text-light:#94a3b8;--radius:12px;--shadow:0 1px 3px #00000014, 0 1px 2px #0000000d;--shadow-md:0 4px 6px #00000012, 0 2px 4px #0000000d;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}body{background:var(--surface-alt);color:var(--text);min-height:100vh}.app-shell{min-height:100vh;display:flex}.sidebar{width:var(--sidebar-width);background:var(--sidebar-bg);z-index:50;flex-direction:column;flex-shrink:0;display:flex;position:fixed;top:0;bottom:0;left:0}.sidebar-brand{border-bottom:1px solid #ffffff14;align-items:center;gap:8px;padding:20px 20px 16px;display:flex}.sidebar-brand-text{flex:1}.sidebar-brand-name{color:#fff;letter-spacing:-.3px;font-size:22px;font-weight:700}.sidebar-brand-sub{color:#fff6;margin-top:2px;font-size:11px}.sidebar-nav{flex-direction:column;flex:1;gap:2px;padding:16px 12px;display:flex;overflow-y:auto}.sidebar-nav a{color:#fff9;border-radius:8px;align-items:center;gap:12px;padding:10px 12px;font-size:14px;font-weight:500;text-decoration:none;transition:background .15s,color .15s;display:flex}.sidebar-nav a:hover{color:#ffffffe6;background:#ffffff14}.sidebar-nav a.active{background:var(--primary);color:#fff}.sidebar-nav a .nav-icon{opacity:.85;flex-shrink:0;width:18px;height:18px}.sidebar-nav a.active .nav-icon{opacity:1}.nav-label{flex:1}.nav-sublabel{opacity:.5;margin-top:1px;font-size:10px;font-weight:400;display:block}.sidebar-footer{border-top:1px solid #ffffff14;padding:16px 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