:root{--border: #d4d4d8;--bg: #f4f4f5;--panel: #ffffff;--text: #18181b;--muted: #71717a;--accent: #2563eb}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:13px;color:var(--text);background:var(--bg)}.app{display:flex;flex-direction:column;height:100%}button{font:inherit;border:1px solid var(--border);background:#fff;border-radius:5px;padding:4px 9px;cursor:pointer;color:var(--text);white-space:nowrap}.topbar>button{min-height:30px;white-space:nowrap;display:inline-flex;align-items:center;justify-content:center;gap:5px}button:hover:not(:disabled){background:#f0f5ff;border-color:#b9ccf2}button:disabled{opacity:.45;cursor:default}button.primary{background:var(--accent);border-color:var(--accent);color:#fff}button.primary:hover{background:#1d4ed8;border-color:#1d4ed8}button.small{padding:2px 7px;font-size:12px}input,select,textarea{font:inherit;border:1px solid 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