:root{
  --paper:#EDECE6;
  --paper-2:#F5F4F0;
  --ink:#14161A;
  --ink-2:#3E4248;
  --ink-3:#71757C;
  --rule:#CFCDC3;
  --rule-2:#DFDDD5;
  --red:#C0342A;
  --blue:#24445E;
  --mono:"Roboto Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --sans:"Zen Kaku Gothic New",-apple-system,"Hiragino Kaku Gothic ProN",sans-serif;
  --pal-w:250px;
  --side-w:320px;
  --top-h:46px;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--sans);font-size:13px;line-height:1.7;
  font-feature-settings:"palt" 1;overflow:hidden;
  -webkit-font-smoothing:antialiased;
}
button,input,select{font-family:inherit;font-size:inherit;color:inherit}

/* ---------- top bar ---------- */
#topbar{
  height:var(--top-h);background:var(--ink);color:#EDECE6;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 14px;gap:16px;
}
.brand{font-family:var(--mono);font-size:11px;letter-spacing:.2em;color:#9AA0A6;margin-right:14px}
.tb-left,.tb-right{display:flex;align-items:center;gap:8px}
.plan-name{
  background:transparent;border:none;border-bottom:1px solid rgba(255,255,255,.22);
  color:#EDECE6;padding:2px 4px;width:230px;font-size:13px;
}
.plan-name:focus{outline:none;border-bottom-color:#EDECE6}
.dirty{font-family:var(--mono);font-size:10px;color:var(--red);letter-spacing:.1em}
.where{font-family:var(--mono);font-size:10px;color:#7E848C;letter-spacing:.08em}
.tb{
  background:transparent;border:1px solid rgba(255,255,255,.22);color:#D8D9DB;
  padding:4px 10px;cursor:pointer;font-size:12px;line-height:1.5;
}
.tb:hover{background:rgba(255,255,255,.1);color:#fff}
.tb:disabled{opacity:.35;cursor:default;background:none}
.tb.danger{border-color:rgba(192,52,42,.7);color:#E88}
.tb.danger:hover{background:var(--red);color:#fff;border-color:var(--red)}
.tb.file{display:inline-flex;align-items:center}
.tb-sep{width:1px;height:18px;background:rgba(255,255,255,.2);margin:0 4px}

/* ---------- layout ---------- */
#layout{
  height:calc(100% - var(--top-h));
  display:grid;grid-template-columns:var(--pal-w) 1fr var(--side-w);
}
#palette,#side{background:var(--paper-2)}
#palette{overflow-y:auto}
#palette{border-right:1px solid var(--rule);padding:14px 14px 40px}
#side{border-left:1px solid var(--rule);display:flex;flex-direction:column;overflow:hidden}
#sideScroll{flex:1 1 auto;min-height:0;overflow-y:auto}

.ph{
  font-family:var(--mono);font-size:10px;letter-spacing:.18em;color:var(--ink-3);
  font-weight:400;margin:18px 0 8px;text-transform:uppercase;
}
.ph:first-child{margin-top:2px}
.phint{font-size:11px;color:var(--ink-3);margin:0 0 10px;line-height:1.65}
.phint b{font-family:var(--mono);font-weight:500;color:var(--ink-2)}

/* ---------- palette ---------- */
.pal{
  border:1px solid var(--rule);background:#fff;padding:7px 8px;margin-bottom:5px;
  cursor:grab;user-select:none;display:flex;gap:8px;align-items:center;
}
.pal:hover{border-color:var(--ink);}
.pal:active{cursor:grabbing}
.pal .swatch{width:26px;height:18px;flex:0 0 auto;border:1px solid rgba(0,0,0,.25)}
.pal .pn{font-size:11.5px;line-height:1.35;flex:1;min-width:0}
.pal .pd{font-family:var(--mono);font-size:9.5px;color:var(--ink-3);display:block}
.cats{display:flex;flex-wrap:wrap;gap:5px;margin-bottom:6px}
.cat{
  display:flex;align-items:center;gap:5px;border:1px solid var(--rule);
  background:#fff;padding:3px 7px;font-size:11px;
}
.cat i{width:9px;height:9px;display:block}
.row{display:flex;align-items:center;gap:7px;font-size:12px;margin:5px 0;cursor:pointer}

/* ---------- canvas ---------- */
#canvasWrap{position:relative;background:#fff;overflow:hidden}
#plan{position:absolute;inset:0;width:100%;height:100%;touch-action:none;cursor:default}
#canvasHud{position:absolute;left:12px;bottom:12px;display:flex;gap:6px;align-items:center}
.hud{
  background:rgba(255,255,255,.92);border:1px solid var(--rule);
  padding:3px 9px;font-size:11.5px;cursor:pointer;
}
.hud:hover{border-color:var(--ink)}
.hud.on{background:var(--ink);color:#fff;border-color:var(--ink)}
.hud-scale{font-family:var(--mono);font-size:11px;color:var(--ink-3);padding:0 4px}
#emptyHint{
  position:absolute;left:50%;top:22%;transform:translateX(-50%);
  text-align:center;font-size:12.5px;color:var(--ink-3);line-height:2;
  border:1px dashed var(--rule);background:rgba(255,255,255,.9);padding:14px 22px;
  pointer-events:none;
}
#dropGhost{
  position:fixed;pointer-events:none;z-index:50;
  border:1.5px solid var(--ink);background:rgba(20,22,26,.12);
}

/* svg */
.wall{fill:none;stroke:#14161A;stroke-linecap:round;stroke-linejoin:round;vector-effect:non-scaling-stroke;stroke-width:1.7px}
.grid line{stroke:#E4E2DA;stroke-width:1px;vector-effect:non-scaling-stroke}
.grid line.major{stroke:#D5D2C8}
.fx{cursor:move}
.fx .body{stroke:#14161A;stroke-width:1px;vector-effect:non-scaling-stroke}
.fx.sel .body{stroke:var(--red);stroke-width:2.4px}
.fx .lbl{font-family:var(--sans);fill:#fff;font-size:11px;pointer-events:none;paint-order:stroke;stroke:rgba(0,0,0,.35);stroke-width:2.5px}
.fixedish .body{stroke-dasharray:6 3}
.warnline{stroke:var(--red);stroke-width:1.6px;vector-effect:non-scaling-stroke}
.warntext{font-family:var(--mono);fill:var(--red);font-size:11px;paint-order:stroke;stroke:#fff;stroke-width:3px}
.sightpoly{fill:rgba(36,68,94,.13);stroke:rgba(36,68,94,.5);stroke-width:1px;vector-effect:non-scaling-stroke;pointer-events:none}
.entrance{fill:var(--red)}
.blabel{font-family:var(--sans);fill:#9A9791;font-size:11px;pointer-events:none}
.measure{stroke:var(--red);stroke-width:1.4px;vector-effect:non-scaling-stroke}
.eyecone{fill:rgba(36,68,94,.16);stroke:none;pointer-events:none}
.eyedot{fill:var(--blue);stroke:#fff;stroke-width:1.5px;vector-effect:non-scaling-stroke;pointer-events:none}
.eyedir{stroke:var(--blue);stroke-width:2px;vector-effect:non-scaling-stroke;pointer-events:none}

/* ---------- inspect ---------- */
#inspect{padding:14px;border-bottom:1px solid var(--rule)}
.ins-row{margin-bottom:14px}
.ins-head{display:flex;justify-content:space-between;align-items:baseline;font-size:12.5px}
.ins-head b{font-family:var(--mono);font-size:13px;font-weight:500}
.ins-head b.bad{color:var(--red)}
.ins-sub{font-size:11px;color:var(--ink-3);margin-top:3px;display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.ins-list{list-style:none;margin:6px 0 0;padding:0;font-family:var(--mono);font-size:11px}
.ins-list li{display:flex;justify-content:space-between;gap:8px;padding:2px 0;border-bottom:1px solid var(--rule-2);cursor:pointer}
.ins-list li:hover{background:#fff}
.ins-list li.bad{color:var(--red)}
.ins-list li.more{color:var(--ink-3);cursor:default}
.ins-list li span:first-child{font-family:var(--sans);flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.areabar{display:flex;height:12px;margin:8px 0 4px;background:var(--rule-2)}
.areabar i{display:block;height:100%}
.num{
  width:62px;background:#fff;border:1px solid var(--rule);padding:2px 5px;
  font-family:var(--mono);font-size:11.5px;
}
.num.wide{width:74px}
.num:focus,select:focus{outline:1px solid var(--ink);border-color:var(--ink)}
.inline{display:inline-flex;align-items:center;gap:4px;cursor:pointer}

/* ---------- inspector ---------- */
#inspector{padding:14px;border-bottom:1px solid var(--rule)}
.empty{font-size:11.5px;color:var(--ink-3);border:1px dashed var(--rule);padding:12px;line-height:1.7}
.f-name{width:100%;background:#fff;border:1px solid var(--rule);padding:4px 6px;margin-bottom:8px;font-size:12.5px}
.f-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:10px}
.f-grid label{font-size:10.5px;color:var(--ink-3);display:flex;flex-direction:column;gap:3px}
.f-grid .num{width:100%}
.f-grid select{width:100%;background:#fff;border:1px solid var(--rule);padding:2px 4px;font-size:11.5px}
.f-slider{margin-bottom:12px}
.f-slider-head{display:flex;justify-content:space-between;align-items:center;font-size:11.5px;color:var(--ink-2)}
.f-slider-head b{font-family:var(--mono);font-weight:500;font-size:11px;color:var(--ink-3);display:flex;align-items:center;gap:3px}
input[type=range]{
  -webkit-appearance:none;appearance:none;width:100%;height:20px;background:transparent;margin:2px 0 0;
}
input[type=range]::-webkit-slider-runnable-track{height:2px;background:var(--rule)}
input[type=range]::-webkit-slider-thumb{
  -webkit-appearance:none;width:14px;height:14px;background:var(--ink);
  margin-top:-6px;border:none;cursor:pointer;
}
input[type=range]:active::-webkit-slider-thumb{background:var(--red)}
.f-ticks{display:flex;justify-content:space-between;font-family:var(--mono);font-size:9px;color:var(--ink-3);margin-top:-2px}
.f-note{font-size:10.5px;color:var(--ink-3);margin:0 0 10px;min-height:1em}
.f-actions{display:flex;gap:6px}
.f-actions .tb{border-color:var(--rule);color:var(--ink-2);background:#fff}
.f-actions .tb:hover{background:var(--ink);color:#fff;border-color:var(--ink)}

/* ---------- 3d ---------- */
#view3d{flex:0 0 auto;height:clamp(240px,38vh,360px);display:flex;flex-direction:column;background:var(--blue);overflow:hidden;position:relative}
#view3d.expanded{
  position:fixed;left:0;top:var(--top-h);right:0;bottom:0;height:auto;z-index:60;
  box-shadow:0 0 0 100vmax rgba(20,22,26,.4);
}
#view3d.expanded .v3-head{padding:12px 20px}
#view3d.expanded .v3-foot{padding:10px 20px}
#lockHint{
  display:none;
  position:absolute;left:50%;bottom:48px;transform:translateX(-50%);
  background:rgba(20,22,26,.72);color:#EDECE6;font-size:11px;
  padding:5px 12px;pointer-events:none;text-align:center;
  max-width:calc(100% - 24px);line-height:1.6;
}
#view3d.expanded #lockHint{font-size:12px;padding:7px 18px;white-space:nowrap}
#lockHint b{font-family:var(--mono);font-weight:500;color:#fff}
#view3d.eyemode #lockHint{display:block}
#view3d.walking #lockHint{display:none}
.v3-head{
  display:flex;justify-content:space-between;align-items:center;padding:8px 12px;
  font-family:var(--mono);font-size:10px;letter-spacing:.18em;color:#9FB3C6;
}
.v3-tabs{display:flex;gap:4px}
.v3{background:transparent;border:1px solid rgba(255,255,255,.22);color:#B9C8D6;padding:2px 8px;font-size:11px;cursor:pointer;letter-spacing:0;font-family:var(--sans)}
.v3.on{background:#fff;color:var(--blue);border-color:#fff}
#three{flex:1 1 0;height:0;min-height:0;width:100%;display:block;cursor:grab}
#three:active{cursor:grabbing}
.v3-foot{
  padding:7px 12px;font-size:10.5px;color:#9FB3C6;display:flex;
  align-items:center;justify-content:space-between;gap:8px;
}
.v3-foot .num{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.25);color:#EDECE6;width:64px}
.v3-foot label{display:flex;align-items:center;gap:4px;white-space:nowrap}
#v3hint{text-align:right;line-height:1.4}

/* ---------- toast ---------- */
#toast{
  position:fixed;left:50%;bottom:26px;transform:translateX(-50%);
  background:var(--ink);color:#fff;padding:8px 16px;font-size:12px;z-index:99;
}


/* ---------- 案の一覧（保存された案を開く／消す） ---------- */
#modal{
  position:fixed;inset:0;z-index:120;display:flex;align-items:center;justify-content:center;
  background:rgba(20,22,26,.45);
}
/* display を指定した要素は hidden 属性が効かなくなるので、明示的に消す */
#modal[hidden]{display:none}
.modal-box{
  background:var(--paper);border:1px solid var(--ink);width:min(560px,calc(100vw - 40px));
  max-height:calc(100vh - 80px);display:flex;flex-direction:column;padding:22px 24px 18px;
}
.modal-box h3{margin:0 0 4px;font-size:15px;font-weight:700}
.modal-note{margin:0 0 14px;font-size:11.5px;color:var(--ink-3);line-height:1.7}
.plan-list{list-style:none;margin:0;padding:0;overflow-y:auto;flex:1 1 auto;min-height:0;
  border-top:1px solid var(--rule)}
.plan-list li{
  display:flex;align-items:center;gap:10px;padding:9px 2px;
  border-bottom:1px solid var(--rule-2);font-size:12.5px;
}
.plan-list .pl-name{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.plan-list .pl-meta{font-family:var(--mono);font-size:10.5px;color:var(--ink-3);white-space:nowrap}
.plan-list .pl-cur{font-family:var(--mono);font-size:10px;color:var(--red);letter-spacing:.08em}
.plan-list button{
  background:#fff;border:1px solid var(--rule);padding:3px 10px;font-size:11.5px;cursor:pointer;
}
.plan-list button:hover{background:var(--ink);color:#fff;border-color:var(--ink)}
.plan-list button.del:hover{background:var(--red);border-color:var(--red)}
.plan-list .empty-row{color:var(--ink-3);padding:18px 2px;border:none}
.modal-foot{display:flex;justify-content:flex-end;padding-top:14px}
.modal-foot .tb{border-color:var(--rule);color:var(--ink-2);background:#fff}
.modal-foot .tb:hover{background:var(--ink);color:#fff;border-color:var(--ink)}

/* ---------- 狭い画面 ---------- */
@media (max-width:1180px){
  :root{--pal-w:212px;--side-w:280px}
  .pal .pn{font-size:11px}
}
@media (max-width:900px){
  /* 3列では入らないので、盤面を上、検査、什器棚の順に積む */
  body{overflow:auto}
  #layout{display:flex;flex-direction:column;height:auto}
  #canvasWrap{order:1}
  #side{order:2}
  #palette{order:3}
  #canvasWrap{height:62vh;min-height:360px}
  #palette,#side{border:none;border-top:1px solid var(--rule);max-height:none;overflow:visible}
  #palette{display:grid;grid-template-columns:1fr 1fr;gap:0 14px;align-items:start}
  #palette .ph,#palette .phint{grid-column:1 / -1}
  #paletteList{grid-column:1 / -1;display:grid;grid-template-columns:1fr 1fr;gap:5px}
  .pal{margin-bottom:0}
  #side{display:block}
  #sideScroll{overflow:visible}
  #view3d{height:56vh;min-height:320px}
  #view3d.expanded{height:auto}
  #topbar{height:auto;flex-wrap:wrap;gap:8px;padding:8px 12px}
  .plan-name{width:180px}
  .tb{padding:4px 8px;font-size:11.5px}
}