:root{
  --bg:#08111a;
  --bg2:#0c1826;
  --panel:rgba(8,17,27,.88);
  --panel2:rgba(11,23,36,.92);
  --line:rgba(95,168,214,.72);
  --lineActive:rgba(130,236,255,.98);
  --text:#edf5ff;
  --muted:#8ea8be;
  --accent:#7eecff;
  --accent2:#19c8f2;
  --danger:#ff7f8f;
  --grid:rgba(112,166,205,.09);
  --shadow:0 16px 36px rgba(0,0,0,.30);
  --radius:18px;
  --node-w:170px;
  --node-h:56px;
  --safe-top:env(safe-area-inset-top);
  --safe-bottom:env(safe-area-inset-bottom);
  --safe-left:env(safe-area-inset-left);
  --safe-right:env(safe-area-inset-right);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{
  margin:0;height:100%;overflow:hidden;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
body{
  background:radial-gradient(circle at top, rgba(25,200,242,.10), transparent 28%), linear-gradient(180deg, var(--bg) 0%, var(--bg2) 100%);
}
button,input,textarea{font:inherit}
.app{position:fixed;inset:0;display:flex;flex-direction:column;overflow:hidden}
.topbar{
  position:relative;z-index:40;
  padding:calc(var(--safe-top) + 10px) calc(var(--safe-right) + 14px) 12px calc(var(--safe-left) + 14px);
  background:linear-gradient(180deg, rgba(6,13,22,.97), rgba(6,13,22,.76));
  border-bottom:1px solid rgba(255,255,255,.05);
  backdrop-filter:blur(16px);
}
.top-row{display:flex;gap:10px;align-items:flex-start}
.title-wrap{min-width:0;flex:1}
.title{font-size:16px;font-weight:800;letter-spacing:.1px}
.meta{margin-top:3px;font-size:12px;color:var(--muted)}
.version{flex:none;padding:9px 12px;border-radius:999px;border:1px solid rgba(126,236,255,.14);background:rgba(18,35,52,.86);color:#b7fbff;font-size:12px;font-weight:800;white-space:nowrap;box-shadow:0 10px 26px rgba(0,0,0,.18)}
.status-row,.action-row{display:flex;gap:8px;margin-top:10px;overflow:auto hidden;scrollbar-width:none}
.status-row::-webkit-scrollbar,.action-row::-webkit-scrollbar{display:none}
.tiny{flex:none;padding:7px 10px;border-radius:999px;border:1px solid rgba(255,255,255,.06);background:rgba(255,255,255,.03);color:var(--muted);font-size:12px;font-weight:700;white-space:nowrap}
.action-row{align-items:center}
.workspace{position:relative;flex:1;min-height:0;overflow:hidden}
.viewport,.outline-view{
  position:absolute;inset:0;overflow:hidden;
}
.viewport{
  user-select:none;
  background:linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size:28px 28px, 28px 28px;
  background-position:center;
  touch-action:none;
}
.viewport.hidden,.outline-view.hidden{display:none}
.world{position:absolute;left:0;top:0;width:4200px;height:4200px;transform-origin:0 0;will-change:transform}
canvas.edges{position:absolute;inset:0;width:4200px;height:4200px;pointer-events:none}
.nodes{position:absolute;inset:0}
.outline-view{padding:12px 12px calc(var(--safe-bottom) + 94px);overflow:auto;background:linear-gradient(180deg, rgba(7,14,23,.96), rgba(8,17,27,.98))}
.outline-head{padding:4px 4px 12px}
.outline-title{font-size:17px;font-weight:800}
.outline-sub{font-size:12px;color:var(--muted);margin-top:4px}
.outline-list{display:flex;flex-direction:column;gap:8px;padding-bottom:12px}
.outline-item{display:flex;align-items:center;gap:8px;padding:10px 12px;border-radius:16px;border:1px solid rgba(255,255,255,.06);background:rgba(255,255,255,.03);margin-left:calc(var(--depth, 0) * 16px)}
.outline-item.selected{border-color:rgba(126,236,255,.55);box-shadow:0 0 0 1px rgba(126,236,255,.16) inset}
.outline-toggle{width:28px;height:28px;border-radius:10px;border:1px solid rgba(255,255,255,.08);background:rgba(255,255,255,.03);color:var(--muted);font-size:14px;font-weight:800;flex:none}
.outline-toggle.empty{visibility:hidden}
.outline-text{min-width:0;flex:1;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.outline-badges{display:flex;gap:6px;flex:none}
.outline-badge{padding:3px 7px;border-radius:999px;background:rgba(255,255,255,.04);font-size:11px;color:var(--muted)}
.node{
  position:absolute;width:var(--node-w);min-height:var(--node-h);padding:12px 14px;border-radius:18px;display:flex;align-items:center;justify-content:center;text-align:center;
  color:var(--node-text,#edf5ff);font-size:var(--font-size,14px);font-weight:800;line-height:1.22;
  border:1px solid var(--node-border, rgba(255,255,255,.09));
  background:var(--node-bg, linear-gradient(180deg, rgba(16,33,51,.98), rgba(9,20,32,.98)));
  box-shadow:inset 0 0 0 1px rgba(126,236,255,.03), 0 14px 28px rgba(0,0,0,.22);
  transition:border-color .12s ease, box-shadow .12s ease, transform .08s ease;
  cursor:grab;touch-action:none;
}
.node.root{color:#06222d;border-color:rgba(255,255,255,.22);background:linear-gradient(180deg, #3ae1ff 0%, #16bbe5 100%);box-shadow:0 16px 34px rgba(22,187,229,.24)}
.node.selected{border-color:rgba(126,236,255,.88);box-shadow:0 0 0 2px rgba(126,236,255,.20), 0 18px 34px rgba(0,0,0,.26)}
.node.dragging{cursor:grabbing;transform:scale(1.015);box-shadow:0 0 0 2px rgba(126,236,255,.25), 0 22px 40px rgba(0,0,0,.30)}
.node.drop-target{border-color:rgba(126,236,255,.98);box-shadow:0 0 0 3px rgba(126,236,255,.18), inset 0 0 0 1px rgba(126,236,255,.14), 0 22px 40px rgba(0,0,0,.30)}
.node.folded .node-fold-dot{display:flex}
.node-text{display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;overflow:hidden;word-break:break-word;max-width:100%}
.node-indicators{position:absolute;right:8px;bottom:7px;display:flex;gap:4px}
.node-dot{width:8px;height:8px;border-radius:999px;background:rgba(255,255,255,.24)}
.node-dot.note{background:#ffd24a}.node-dot.link{background:#6fe88b}.node-fold-dot{display:none;position:absolute;left:8px;top:8px;width:18px;height:18px;border-radius:999px;background:rgba(6,13,22,.32);align-items:center;justify-content:center;font-size:12px;color:var(--node-text,#edf5ff)}
.zoom-box{position:absolute;right:12px;top:12px;z-index:31;display:flex;gap:8px;align-items:center}
.zoom-btn{width:52px;height:44px;border-radius:16px;border:1px solid rgba(255,255,255,.08);background:rgba(8,17,27,.84);color:var(--text);font-size:18px;font-weight:900;box-shadow:var(--shadow);backdrop-filter:blur(12px)}
.toolbar{position:absolute;left:10px;right:10px;bottom:calc(var(--safe-bottom) + 10px);z-index:45;padding:10px;border-radius:24px;border:1px solid rgba(255,255,255,.07);background:rgba(7,14,23,.78);box-shadow:var(--shadow);backdrop-filter:blur(18px);display:flex;flex-direction:column;gap:8px}
.toolbar-row{display:flex;gap:8px;align-items:center}
.tool{flex:1 1 0;min-height:46px;padding:0 12px;border-radius:16px;border:1px solid rgba(255,255,255,.08);background:linear-gradient(180deg, rgba(17,31,47,.98), rgba(9,18,30,.98));color:var(--text);font-size:15px;font-weight:800;letter-spacing:.1px;box-shadow:0 10px 22px rgba(0,0,0,.18);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tool.primary{background:linear-gradient(180deg, #43e6ff, #17bde7);color:#06232d;border-color:rgba(255,255,255,.18);box-shadow:0 12px 28px rgba(23,189,231,.24)}
.tool.warn{color:#ffd6dc;border-color:rgba(255,127,143,.28);background:linear-gradient(180deg, rgba(35,18,25,.98), rgba(23,11,16,.98))}
.tool.ghost{flex:0 0 auto;min-width:72px;padding:0 14px;background:rgba(255,255,255,.03);color:var(--muted)}
.node-menu-btn{min-width:76px}
.segment{display:flex;padding:4px;border-radius:18px;border:1px solid rgba(255,255,255,.07);background:rgba(255,255,255,.03);min-width:0;box-shadow:inset 0 1px 0 rgba(255,255,255,.02)}
.view-segment{min-width:180px;flex:1}
.settings-segment,.font-segment{width:100%}
.seg{flex:1 1 0;min-height:40px;border:none;border-radius:14px;background:transparent;color:var(--muted);font-size:13px;font-weight:800;white-space:nowrap;padding:0 10px}
.seg.active{color:#06232d;background:linear-gradient(180deg, #43e6ff, #17bde7);box-shadow:0 10px 18px rgba(23,189,231,.22)}
.mini-top-btn{flex:none;min-height:40px;padding:0 14px;border-radius:14px;border:1px solid rgba(255,255,255,.08);background:rgba(255,255,255,.03);color:var(--text);font-weight:800}
.sheet{position:fixed;inset:0;z-index:90;display:flex;align-items:flex-end;justify-content:center;background:rgba(0,0,0,.32);backdrop-filter:blur(4px);opacity:0;pointer-events:none;transition:opacity .16s ease}
.sheet.open{opacity:1;pointer-events:auto}
.sheet-card{width:min(100%,720px);margin:0 10px calc(var(--safe-bottom) + 10px);padding:14px;border-radius:24px;border:1px solid rgba(255,255,255,.08);background:rgba(7,14,23,.94);box-shadow:var(--shadow);backdrop-filter:blur(18px);transform:translateY(18px);transition:transform .16s ease;max-height:min(82vh,760px);overflow:auto}
.sheet.open .sheet-card{transform:translateY(0)}
.sheet-top{display:flex;gap:10px;justify-content:space-between;align-items:flex-start}
.sheet-label{font-size:12px;color:var(--muted);font-weight:700}
.sheet-title{font-size:18px;font-weight:800;margin-top:2px}
.sheet-close{min-height:38px;padding:0 14px;border-radius:12px;border:1px solid rgba(255,255,255,.08);background:rgba(255,255,255,.03);color:var(--text);font-weight:800}
.sheet-foot{display:flex;gap:10px;align-items:center;justify-content:space-between;margin-top:12px}
.editor-sheet-card{max-width:720px}
.editor-node-chip{margin-top:10px;display:inline-flex;padding:6px 10px;border-radius:999px;background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.06);font-size:12px;color:var(--muted);font-weight:700}
.editor-area,.sheet-input{width:100%;margin-top:12px;border-radius:16px;border:1px solid rgba(255,255,255,.08);background:rgba(255,255,255,.03);color:var(--text);padding:14px;outline:none}
.editor-area{min-height:120px;resize:vertical}
.note-area{min-height:92px;resize:vertical}
.count{font-size:12px;color:var(--muted)}
.editor-actions,.log-actions{display:flex;gap:8px}
.sheet-btn{min-height:44px;padding:0 14px;border-radius:14px;border:1px solid rgba(255,255,255,.08);background:rgba(255,255,255,.03);color:var(--text);font-size:14px;font-weight:800}
.sheet-btn.primary{background:linear-gradient(180deg, #43e6ff, #17bde7);color:#06232d}
.sheet-btn.block{width:100%}
.warnish{color:#ffd6dc;border-color:rgba(255,127,143,.28);background:linear-gradient(180deg, rgba(35,18,25,.98), rgba(23,11,16,.98))}
.export-grid,.settings-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-top:12px}
.settings-grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}
.group{margin-top:14px;padding-top:14px;border-top:1px solid rgba(255,255,255,.05)}
.compact-group{padding-top:12px;margin-top:12px}
.group-title{font-size:13px;color:var(--muted);font-weight:800;margin-bottom:10px}
.swatches{display:flex;gap:8px;flex-wrap:wrap}
.swatch{width:36px;height:36px;border-radius:999px;border:2px solid rgba(255,255,255,.08);background:var(--swatch, linear-gradient(180deg, rgba(17,31,47,.98), rgba(9,18,30,.98)));box-shadow:0 8px 16px rgba(0,0,0,.18)}
.swatch.active{border-color:rgba(126,236,255,.85);box-shadow:0 0 0 2px rgba(126,236,255,.18)}
.log-panel{position:absolute;left:10px;right:10px;bottom:calc(var(--safe-bottom) + 88px);z-index:44;border-radius:20px;border:1px solid rgba(255,255,255,.08);background:rgba(7,14,23,.90);box-shadow:var(--shadow);backdrop-filter:blur(16px);overflow:hidden;opacity:0;pointer-events:none;transform:translateY(16px);transition:opacity .16s ease, transform .16s ease;max-height:min(38vh,320px)}
.log-panel.open{opacity:1;pointer-events:auto;transform:translateY(0)}
.log-head{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:12px 14px;border-bottom:1px solid rgba(255,255,255,.06);font-weight:800}
.mini-btn{min-height:36px;padding:0 12px;border-radius:12px;border:1px solid rgba(255,255,255,.08);background:rgba(255,255,255,.03);color:var(--text);font-size:12px;font-weight:700}
.log-content{padding:8px 14px 14px;overflow:auto;max-height:220px;white-space:pre-wrap;word-break:break-word;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;line-height:1.45;color:#b9cde0}
.log-line{padding:2px 0}
@media (max-width:600px){
  .version{font-size:11px;padding:8px 10px}
  .tool{font-size:14px}
  .title{font-size:15px}
  .sheet-card{padding:12px}
}