:root{--color-bg: #ffffff;--color-bg-subtle: #f7f8fa;--color-bg-hover: #eef1f6;--color-bg-selected: #e3e9ff;--color-border: #e0e2e7;--color-text: #1a1d21;--color-text-muted: #6b7280;--color-accent: #4f5fe0;--color-accent-contrast: #ffffff;--color-danger: #d1453b;--color-success: #2a9d5c;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .06);--radius: 6px;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif}@media (prefers-color-scheme: dark){:root{--color-bg: #1e2024;--color-bg-subtle: #26282d;--color-bg-hover: #2f323a;--color-bg-selected: #35407a;--color-border: #3a3d44;--color-text: #e8e9ec;--color-text-muted: #9aa0aa;--color-accent: #7b88f0;--color-accent-contrast: #14151a;--color-danger: #e8756b;--color-success: #57c98a;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .4)}}html,body,#root{height:100%;margin:0;padding:0}body{box-sizing:border-box;font-family:var(--font-sans);color:var(--color-text);background:var(--color-bg)}*,*:before,*:after{box-sizing:inherit}button{font-family:inherit;font-size:13px;color:var(--color-text);background:var(--color-bg-subtle);border:1px solid var(--color-border);border-radius:var(--radius);padding:5px 10px;cursor:pointer}button:hover:not(:disabled){background:var(--color-bg-hover)}button:disabled{opacity:.5;cursor:default}button.btn-icon{padding:3px 6px;font-size:12px;line-height:1}button.btn-icon-lg{font-size:17px;padding:6px 10px;line-height:1}button.btn-ghost-icon{background:transparent;border:none;padding:4px;font-size:16px;line-height:1;border-radius:var(--radius);color:var(--color-text-muted)}button.btn-ghost-icon:hover:not(:disabled){background:var(--color-bg-selected);color:var(--color-text)}button.btn-primary{background:var(--color-accent);border-color:var(--color-accent);color:var(--color-accent-contrast)}button.btn-primary:hover:not(:disabled){filter:brightness(1.08)}input,textarea,select{font-family:inherit;font-size:13px;color:var(--color-text);background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius);padding:6px 8px}input:focus,textarea:focus,select:focus{outline:2px solid var(--color-accent);outline-offset:-1px}.text-muted{color:var(--color-text-muted)}.text-error{color:var(--color-danger)}.text-success{color:var(--color-success)}.column{height:100%;display:flex;flex-direction:column;border-right:1px solid var(--color-border);background:var(--color-bg)}.column-header{padding:8px 10px;font-weight:600;font-size:13px;border-bottom:1px solid var(--color-border);display:flex;justify-content:space-between;align-items:center;flex-shrink:0;gap:6px}.column-body{flex:1;overflow-y:auto}.list-reset{list-style:none;margin:0;padding:0}.list-item{padding:8px 10px;cursor:pointer;border-bottom:1px solid var(--color-border)}.list-item:hover{background:var(--color-bg-hover)}.list-item.selected{background:var(--color-bg-selected)}.chip{display:inline-flex;align-items:center;justify-content:center;min-width:18px;height:18px;padding:0 5px;border-radius:999px;background:var(--color-accent);color:var(--color-accent-contrast);font-size:11px;font-weight:600;line-height:1}.row-actions{display:flex;gap:2px;opacity:0;transition:opacity .1s ease}.list-item:hover .row-actions,.list-item:focus-within .row-actions{opacity:1}.avatar{width:28px;height:28px;border-radius:50%;background:var(--color-accent);color:var(--color-accent-contrast);display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:600;flex-shrink:0}.tree-row{display:flex;align-items:center;gap:6px;padding:6px 8px}.tree-row:hover{background:var(--color-bg-hover)}.tree-row.selected{background:var(--color-bg-selected)}.tree-actions{display:flex;gap:2px;opacity:0;transition:opacity .1s ease}.tree-row:hover .tree-actions,.tree-row:focus-within .tree-actions{opacity:1}.resizer{width:4px;flex-shrink:0;cursor:col-resize;background:transparent}.resizer:hover,.resizer.active{background:var(--color-accent)}.dropdown-menu{position:absolute;right:0;top:calc(100% + 6px);background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius);box-shadow:var(--shadow-sm);min-width:180px;overflow:hidden;z-index:20}.dropdown-item{display:block;width:100%;text-align:left;background:transparent;border:none;border-radius:0;padding:9px 14px;font-size:13px}.dropdown-item:hover{background:var(--color-bg-hover)}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;display:flex;align-items:center;justify-content:center;z-index:50}.modal-panel{width:900px;max-width:92vw;height:680px;max-height:88vh;background:var(--color-bg);border-radius:var(--radius);box-shadow:var(--shadow-sm);display:flex;flex-direction:column;overflow:hidden}.modal-header{display:flex;justify-content:space-between;align-items:center;padding:10px 16px;border-bottom:1px solid var(--color-border);flex-shrink:0}.modal-nav{width:160px;flex-shrink:0;border-right:1px solid var(--color-border);padding:8px;display:flex;flex-direction:column;gap:2px}.modal-nav-item{text-align:left;background:transparent;border:none;padding:8px 10px;border-radius:var(--radius)}.modal-nav-item:hover{background:var(--color-bg-hover)}.modal-nav-item.active{background:var(--color-bg-selected);font-weight:600}.modal-content{flex:1;overflow-y:auto;padding:16px}