:root{--primary: #4f46e5;--primary-dark: #3730a3;--green: #16a34a;--red: #dc2626;--amber: #d97706;--bg: #f1f5f9;--surface: #ffffff;--border: #e2e8f0;--text: #1e293b;--text-sub: #475569;--text-muted: #94a3b8;--radius: 10px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);min-height:100vh}