:root{--bg: #ffffff;--text: #111111;--muted: #6b7280;--border: #e5e7eb;--brand: #16a34a;--brand-dark: #15803d;--surface: #f8fafc;--danger: #dc2626;--success: #166534;--focus-ring: rgba(22, 163, 74, .2);--sidebar-bg: #111827;--sidebar-text: #f9fafb;--sidebar-muted: #9ca3af;--warning: #f59e0b;--info: #2563eb}*{box-sizing:border-box}html,body,#app{min-height:100%}body{margin:0;font-family:Inter,Segoe UI,Roboto,Arial,sans-serif;color:var(--text);background:var(--surface);line-height:1.4}a{color:inherit;text-decoration:none}button,input,select{font:inherit}.app-shell{display:grid;grid-template-columns:260px 1fr;min-height:100vh;background:var(--surface)}.sidebar{border-right:1px solid 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