:root{--bg: #f8fafc;--surface: #ffffff;--elevated: #f1f5f9;--border: #e2e8f0;--border-strong: #cbd5e1;--text-primary: #0f172a;--text-secondary: #475569;--text-muted: #94a3b8;--blue: #2563eb;--blue-lt: #dbeafe;--green: #16a34a;--green-lt:#dcfce7;--amber: #d97706;--amber-lt:#fef3c7;--red: #dc2626;--red-lt: #fee2e2;--purple: #7c3aed;--purple-lt:#ede9fe;--teal: #0891b2;--teal-lt: #cffafe;--font-sans: "Segoe UI", system-ui, -apple-system, sans-serif;--font-mono: "Cascadia Code", monospace;--radius: 8px;--radius-lg: 12px;--shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);--shadow-md: 0 4px 6px rgba(0,0,0,.07), 0 2px 4px 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