*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #fafafa;--surface: #ffffff;--border: #e2e2e2;--text: #1a1a1a;--text-secondary: #666;--accent: #2563eb;--accent-hover: #1d4ed8;--danger: #dc2626;--danger-hover: #b91c1c;--radius: 6px;--font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono: "SF Mono", "Fira Code", monospace}body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.5;-webkit-font-smoothing:antialiased}button{cursor:pointer;font-family:inherit;border:none;border-radius:var(--radius);padding:8px 16px;font-size:14px;font-weight:500;transition:background .15s}input,textarea{font-family:inherit;border:1px solid var(--border);border-radius:var(--radius);padding:10px 12px;font-size:14px;outline:none;width:100%;transition:border-color .15s}input:focus,textarea:focus{border-color:var(--accent)}