:root{
	--bg:#f0fcff; 
	--panel:#eafff9;
	--card:#ffffff;
	--accent:#01796f; 
	--muted:#244a47;
	--close-bg: #fff;
	--close-color: #111;
	--close-border: 1px solid #ddd;
}
*{box-sizing:border-box}
body,html{height:100%;margin:0;font-family:Inter,ui-sans-serif,system-ui,Segoe UI,Roboto,Arial;background:linear-gradient(180deg,var(--bg),#eaf9f5);color:#073637}
.container{max-width:1100px;margin:28px auto;padding:20px}
.layout{display:flex;gap:12px}
.editor{flex:1}
.workspace{flex:1;min-width:320px}
textarea{width:100%;height:60vh;padding:12px;border:1px solid rgba(1,121,111,0.06);border-radius:8px;font-family:monospace;background:#fbfffe}
.toolbar{display:flex;gap:8px;align-items:center;margin-bottom:12px}
.toolbar button{padding:8px 10px;border-radius:6px;border:none;background:var(--accent);color:#fff;cursor:pointer}
.status{margin-left:12px;color:var(--muted)}
.tree{background:var(--card);border:1px solid rgba(1,121,111,0.06);padding:10px;border-radius:8px;max-height:55vh;overflow:auto}
.node{padding:8px 10px;border-radius:6px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;border:1px solid transparent}
.node.folder{background:linear-gradient(180deg,#f7fffb,#ecfffa)}
.node.file{background:#fff}
.node:hover{border-color:rgba(1,121,111,0.09);box-shadow:0 6px 18px rgba(1,121,111,0.03)}
.node .name{font-family:monospace;color:#044a47}
.node .meta{font-size:12px;color:#4b7876;margin-left:8px}
.node-list{padding-left:12px}
.node-panel{margin-top:10px;background:var(--card);border:1px solid rgba(1,121,111,0.06);padding:12px;border-radius:8px}
.node-panel h4{margin:0 0 8px}
.node-panel textarea{width:100%;height:120px}
.node-actions{display:flex;gap:8px;margin-top:8px}
.node-actions button{padding:6px 8px;border-radius:6px;border:none;background:var(--accent);color:#fff;cursor:pointer}
.close-root{position:fixed;right:12px;top:12px;width:36px;height:36px;border-radius:6px;display:flex;align-items:center;justify-content:center;background:var(--close-bg);border:var(--close-border);color:var(--close-color);text-decoration:none;font-size:20px;z-index:1200;box-shadow:0 4px 12px rgba(0,0,0,0.08)}