@import"https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap";:root{--bg-app: #0e0e10;--bg-sidebar: #141416;--bg-sidebar-hover: #1e1e22;--bg-sidebar-active: #252529;--bg-editor: #0e0e10;--bg-input: #1a1a1f;--bg-input-focus: #22222a;--border: #2a2a32;--border-focus: #6366f1;--text-primary: #e8e8ec;--text-secondary: #8888a0;--text-muted: #55556a;--text-section: #6868808a;--accent-indigo: #6366f1;--accent-violet: #8b5cf6;--accent-indigo-dim: rgba(99, 102, 241, .18);--icon-folder: #e3b341;--icon-folder-open: #f0c040;--icon-file: #7ba7e8;--icon-danger: #f87171;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--transition: .15s ease;--sidebar-w: 340px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%;width:100%}body{font-family:Inter,system-ui,-apple-system,sans-serif;background:var(--bg-app);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.app{display:flex;height:100vh;width:100vw;overflow:hidden}.sidebar{width:var(--sidebar-w);min-width:var(--sidebar-w);flex-shrink:0;background:var(--bg-sidebar);border-right:1px solid var(--border);display:flex;flex-direction:column;overflow:hidden;position:relative}.sidebar:after{content:"";position:absolute;top:0;right:0;bottom:0;width:1px;background:linear-gradient(to bottom,var(--accent-indigo),transparent 60%);opacity:.4;pointer-events:none}.sidebar__header{display:flex;align-items:center;gap:10px;padding:16px 14px 14px;border-bottom:1px solid var(--border)}.sidebar__logo{display:flex;align-items:center;flex-shrink:0}.sidebar__title{font-size:11px;font-weight:700;letter-spacing:.12em;color:var(--text-secondary);text-transform:uppercase}.sidebar__toolbar{display:flex;align-items:center;justify-content:space-between;padding:6px 6px 6px 14px;border-bottom:1px solid var(--border);min-height:36px}.sidebar__section-label{font-size:10.5px;font-weight:600;letter-spacing:.09em;color:var(--text-muted);text-transform:uppercase;-webkit-user-select:none;user-select:none}.sidebar__toolbar-actions{display:flex;align-items:center;gap:4px;padding-right:4px}.sidebar__tree{flex:1;overflow-y:auto;overflow-x:hidden;padding:6px 0}.sidebar__tree::-webkit-scrollbar{width:4px}.sidebar__tree::-webkit-scrollbar-track{background:transparent}.sidebar__tree::-webkit-scrollbar-thumb{background:var(--border);border-radius:999px}.root-creator{display:flex;align-items:center;gap:6px;padding:4px 8px;border-bottom:1px solid var(--border);background:var(--bg-input)}.root-creator__icon{font-size:14px;flex-shrink:0}.root-creator__input{flex:1;background:transparent;border:none;outline:none;color:var(--text-primary);font-family:inherit;font-size:13px;padding:4px 0}.root-creator__input::placeholder{color:var(--text-muted)}.tree{width:100%}.tree__empty{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:40px 20px;gap:8px;text-align:center}.tree__empty-icon{font-size:40px;margin-bottom:4px;filter:grayscale(.3) opacity(.7)}.tree__empty-title{font-size:13px;font-weight:600;color:var(--text-secondary)}.tree__empty-subtitle{font-size:12px;color:var(--text-muted);line-height:1.6;max-width:200px}.tree-node__wrapper{width:100%}.tree-node__row{display:flex;align-items:center;gap:5px;padding-right:6px;height:28px;cursor:pointer;border-radius:var(--radius-sm);margin:1px 6px;position:relative;transition:background var(--transition),color var(--transition);-webkit-user-select:none;user-select:none;outline:none}.tree-node__row:hover,.tree-node__row--hovered{background:var(--bg-sidebar-hover)}.tree-node__row:focus-visible{background:var(--bg-sidebar-hover);box-shadow:0 0 0 1px var(--border-focus)}.tree-node__row--creating{background:var(--bg-input);cursor:default}.tree-node__chevron{display:flex;align-items:center;justify-content:center;width:14px;flex-shrink:0;color:var(--text-muted);transition:transform var(--transition)}.tree-node__icon{display:flex;align-items:center;flex-shrink:0;transition:color var(--transition)}.tree-node__icon--folder{color:var(--icon-folder)}.tree-node__icon--folder.tree-node__icon--open{color:var(--icon-folder-open)}.tree-node__icon--file{color:var(--icon-file)}.tree-node__name{flex:1;font-size:13px;font-weight:400;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;line-height:1}.tree-node__inline-input{flex:1;background:var(--bg-input-focus);border:1px solid var(--border-focus);border-radius:var(--radius-sm);outline:none;color:var(--text-primary);font-family:inherit;font-size:13px;padding:2px 6px;min-width:0}.tree-node__actions{display:flex;align-items:center;gap:3px;opacity:0;pointer-events:none;transition:opacity var(--transition);flex-shrink:0;margin-left:4px}.tree-node__actions--visible{opacity:1;pointer-events:auto}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:none;border-radius:var(--radius-sm);cursor:pointer;font-family:inherit;font-weight:500;transition:background var(--transition),color var(--transition),transform var(--transition),box-shadow var(--transition);white-space:nowrap;outline:none}.btn:focus-visible{box-shadow:0 0 0 2px var(--accent-indigo)}.btn--sm{height:24px;padding:0 7px;font-size:11.5px}.btn--md{height:34px;padding:0 14px;font-size:13.5px}.btn--primary{background:linear-gradient(135deg,var(--accent-indigo),var(--accent-violet));color:#fff}.btn--primary:hover{filter:brightness(1.12);transform:translateY(-1px);box-shadow:0 4px 12px #6366f166}.btn--primary:active{transform:translateY(0);filter:brightness(.95)}.btn--ghost{background:transparent;color:var(--text-secondary)}.btn--ghost:hover{background:var(--bg-sidebar-active);color:var(--text-primary)}.btn--ghost:active{background:var(--accent-indigo-dim)}.btn--danger{background:transparent;color:var(--text-secondary)}.btn--danger:hover{background:rgba(248,113,113,.12);color:var(--icon-danger)}.btn--danger:active{background:rgba(248,113,113,.22)}.btn__icon{display:flex;align-items:center}.editor{flex:1;min-width:0;display:flex;align-items:center;justify-content:center;background:var(--bg-editor);position:relative;overflow:hidden}.editor:before{content:"";position:absolute;width:600px;height:600px;background:radial-gradient(circle,rgba(99,102,241,.06) 0%,transparent 70%);top:50%;left:50%;transform:translate(-50%,-50%);pointer-events:none}.editor__welcome{display:flex;flex-direction:column;align-items:center;gap:16px;text-align:center;max-width:440px;padding:32px;position:relative;z-index:1}.editor__welcome-icon{width:80px;height:80px;border-radius:20px;overflow:hidden;box-shadow:0 20px 60px #6366f14d;animation:float 4s ease-in-out infinite}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-8px)}}.editor__welcome-title{font-size:22px;font-weight:700;background:linear-gradient(135deg,var(--text-primary),var(--text-secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.editor__welcome-subtitle{font-size:14px;color:var(--text-secondary);line-height:1.65}.editor__shortcuts{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:8px;width:100%}.shortcut{display:flex;align-items:center;gap:8px;background:var(--bg-sidebar);border:1px solid var(--border);border-radius:var(--radius-md);padding:10px 12px;text-align:left}.shortcut kbd{background:var(--bg-sidebar-active);border:1px solid var(--border);border-radius:var(--radius-sm);padding:2px 7px;font-family:inherit;font-size:11px;font-weight:600;color:var(--accent-indigo);white-space:nowrap;flex-shrink:0}.shortcut span{font-size:12px;color:var(--text-secondary);line-height:1.4}@keyframes fadeIn{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}.tree-node__wrapper{animation:fadeIn .12s ease}