:root{
  --blue:#0747a6;
  --blue2:#0052cc;
  --bg:#f4f5f7;
  --panel:#ffffff;
  --border:#dfe1e6;
  --text:#172b4d;
  --muted:#6b778c;
  --danger:#de350b;
  --okbg:#e3fcef;
  --warnbg:#fff4e5;
  --badbg:#ffebe6;
}

*{box-sizing:border-box}
body{margin:0;font-family:Segoe UI, Arial, sans-serif;background:var(--bg);color:var(--text);}
a{color:var(--blue2)}
.topbar{
  height:56px;background:var(--blue);color:#fff;display:flex;align-items:center;padding:0 16px;gap:10px;
}
.topbar .brand{font-weight:700;letter-spacing:.2px}
.topbar .spacer{flex:1}
.topbar select,.topbar input,.topbar button{
  height:36px;border-radius:8px;border:1px solid rgba(255,255,255,.22);
  background:rgba(255,255,255,.12);color:#fff;padding:0 10px;font-size:14px;
}
.topbar input::placeholder{color:rgba(255,255,255,.8)}
.topbar button{cursor:pointer}
.topbar button.primary{background:rgba(255,255,255,.22);border-color:rgba(255,255,255,.35)}

.layout{display:flex;height:calc(100vh - 56px);}
.sidebar{width:320px;background:var(--panel);border-right:1px solid var(--border);padding:14px;overflow:auto;}
.content{flex:1;padding:18px;overflow:auto;}
.card{background:#fff;border:1px solid var(--border);border-radius:12px;overflow:hidden;}
.head{
  padding:14px 16px;border-bottom:1px solid var(--border);display:flex;gap:10px;align-items:flex-start;
}
.head .title{font-size:22px;font-weight:700;flex:1;min-width:0}
.head .meta{color:var(--muted);font-size:12px;margin-top:6px}
.head .actions{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}
.head .actions button,.head .actions select{
  height:34px;border-radius:8px;border:1px solid var(--border);background:#fff;color:var(--text);padding:0 10px;cursor:pointer;
}
.head .actions button.primary{background:var(--blue2);border-color:var(--blue2);color:#fff}
.head .actions button.danger{border-color:rgba(222,53,11,.35);color:var(--danger)}
.head .actions button:hover{background:#f1f2f4}
.head .actions button.primary:hover{filter:brightness(1.05);background:var(--blue2)}

.toolbar{
  display:none;gap:8px;flex-wrap:wrap;padding:10px 12px;border-bottom:1px solid var(--border);background:#fff;
}
.toolbar.show{display:flex}
.toolbar button,.toolbar select,.toolbar input{
  height:32px;border-radius:8px;border:1px solid var(--border);background:#fff;cursor:pointer;padding:0 10px;font-size:13px;
}
.toolbar input[type="color"]{padding:0;width:42px}

.canvas{padding:18px 18px 26px 18px;min-height:70vh;}
.editor{min-height:60vh;border:1px solid var(--border);border-radius:10px;padding:12px;outline:none;}
.editor:focus{box-shadow: inset 0 0 0 2px rgba(0,82,204,.25);}

.tree-title{font-weight:700;margin-bottom:10px}
.tree-tools{display:flex;gap:8px;margin-bottom:10px}
.tree-tools input{width:100%;height:34px;border:1px solid var(--border);border-radius:10px;padding:0 10px}
.node{padding:6px 8px;border-radius:10px;cursor:pointer;display:flex;gap:8px;align-items:center}
.node:hover{background:#f1f2f4}
.node.active{background:rgba(0,82,204,.10);outline:1px solid rgba(0,82,204,.18)}
.node .name{flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.node .badge{font-size:11px;color:var(--muted);border:1px solid var(--border);border-radius:999px;padding:2px 7px}
.child{margin-left:16px;border-left:1px dashed var(--border);padding-left:10px;margin-top:6px}

.pill{display:inline-flex;align-items:center;gap:8px;border-radius:999px;padding:4px 10px;font-size:12px;border:1px solid transparent}
.pill .dot{width:8px;height:8px;border-radius:999px;background:var(--muted)}
.pill.UNCLASSIFIED{background:var(--okbg);border-color:rgba(54,179,126,.25)}
.pill.UNCLASSIFIED .dot{background:#36b37e}
.pill.DUBIOUS{background:var(--badbg);border-color:rgba(222,53,11,.20)}
.pill.DUBIOUS .dot{background:var(--danger)}
.pill.MODERATELY_DUBIOUS{background:var(--warnbg);border-color:rgba(255,171,0,.25)}
.pill.MODERATELY_DUBIOUS .dot{background:#ffab00}

.label{display:inline-block;background:#e9f2ff;padding:2px 8px;border-radius:999px;margin-right:6px;font-size:12px}
.toc{background:#f1f2f4;border:1px solid var(--border);border-radius:12px;padding:12px;margin:0 0 14px 0}
.expand{border:1px solid var(--border);border-radius:12px;padding:10px;margin:10px 0;background:#fafbfc}
.expand summary{cursor:pointer;font-weight:700}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:12px}
.tile{border:1px solid var(--border);border-radius:14px;background:#fff;padding:14px}
.tile h3{margin:0 0 8px 0}
.small{color:var(--muted);font-size:12px}
.hr{height:1px;background:var(--border);margin:12px 0}