:root{--bg: #f4f6fb;--panel: #ffffff;--panel-2: #f8fafc;--text: #0f172a;--muted: #64748b;--border: #e2e8f0;--primary: #2563eb;--primary-dark: #1d4ed8;--danger: #dc2626;--success: #16a34a;--warning: #f59e0b;--shadow: 0 16px 40px rgba(15, 23, 42, .08);--radius: 18px}*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg);color:var(--text);height:100vh;overflow:hidden}.app{height:100vh;display:grid;grid-template-columns:310px 1fr}.sidebar{background:#0f172a;color:#e5e7eb;display:flex;flex-direction:column;min-width:0}.brand{padding:22px 18px 16px;border-bottom:1px solid 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