:root{--bg: #f8fafc;--surface: #ffffff;--surface-soft: #f1f5f9;--border: #e2e8f0;--text: #0f172a;--muted: #64748b;--primary: #2563eb;--primary-dark: #1d4ed8;--success: #059669;--danger: #dc2626;--sidebar: #0f172a;--sidebar-soft: #1e293b;--sidebar-text: #cbd5e1;--radius: 6px;--z-table-header: 2;--z-mobile-nav: 20}*{box-sizing:border-box}html{font-size:14px}body{margin:0;color:var(--text);background:var(--bg);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;line-height:1.45}button,input,select,textarea{font:inherit}button{cursor:pointer}.app-shell{display:grid;grid-template-columns:248px minmax(0,1fr);min-height:100vh;isolation:isolate}.login-screen{display:grid;min-height:100vh;place-items:center;padding:24px;background:linear-gradient(180deg,#fff,#f8fafc 42%,#eef2f7)}.login-card{width:min(440px,100%);border:1px solid #cbd5e1;border-radius:8px;background:var(--surface);box-shadow:0 18px 48px 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