/* Layout: full-height workbench. Left, a 3D stage with a transport bar and annotation overlay. Right, a tabbed panel. Stacks on phones. */
:root{
  --bg:#E6E9EC; --panel:#F5F6F7; --panel2:#EBEEF0; --ink:#12181D; --muted:#58646D; --line:#C8CFD5;
  --accent:#0B6E6E; --accent-ink:#FFFFFF; --hi:#E39B00; --stage:#DCE1E5; --danger:#B3261E;
  --warnbg:#FBEBD0; --warnink:#6B4300; --notebg:#DDEBEC; --infobg:#E1E7F5; --infoink:#1F3A7A;
  --f-disp:'Barlow Condensed','Arial Narrow',sans-serif; --f-body:'IBM Plex Sans',system-ui,sans-serif; --f-mono:'IBM Plex Mono',ui-monospace,monospace;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0D1114; --panel:#151B1F; --panel2:#1B2227; --ink:#E5E9EC; --muted:#8B97A0; --line:#27313A;
  --accent:#3FB6B0; --accent-ink:#06201F; --hi:#F2B33D; --stage:#11171B; --danger:#F0877F;
  --warnbg:#3A2C10; --warnink:#F5D9A2; --notebg:#17302F; --infobg:#1A2540; --infoink:#B9C8F5; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0D1114; --panel:#151B1F; --panel2:#1B2227; --ink:#E5E9EC; --muted:#8B97A0; --line:#27313A;
  --accent:#3FB6B0; --accent-ink:#06201F; --hi:#F2B33D; --stage:#11171B; --danger:#F0877F;
  --warnbg:#3A2C10; --warnink:#F5D9A2; --notebg:#17302F; --infobg:#1A2540; --infoink:#B9C8F5; color-scheme:dark}
*{box-sizing:border-box}
html,body{height:100%;margin:0}
body{background:var(--bg);color:var(--ink);font-family:var(--f-body);font-size:14px;line-height:1.45}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
a{color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.app{display:flex;flex-direction:column;height:100%;min-height:0}
header{display:flex;align-items:center;gap:10px;padding:8px max(16px,env(safe-area-inset-left,0px));border-bottom:1px solid var(--line);background:var(--panel);flex-wrap:wrap}
.brand{font-family:var(--f-disp);font-weight:700;font-size:24px;letter-spacing:.02em;text-transform:uppercase;display:flex;align-items:baseline;gap:8px}
.brand i{font-style:normal;font-family:var(--f-mono);font-size:11px;color:var(--muted);letter-spacing:0;text-transform:none;font-weight:400}
.pname{flex:1;min-width:140px;font-weight:600;background:transparent;border:1px solid transparent;border-radius:6px;padding:5px 8px}
.pname:hover,.pname:focus{border-color:var(--line);background:var(--bg)}
.pname[readonly]{pointer-events:none}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:6px;overflow:hidden}
.seg button{border:0;background:transparent;padding:6px 14px;font-weight:500}
.seg button[aria-pressed="true"]{background:var(--ink);color:var(--bg)}
.seg button:disabled{opacity:.4;cursor:not-allowed}
.chip{font-family:var(--f-mono);font-size:11px;color:var(--muted);border:1px solid var(--line);border-radius:4px;padding:3px 7px;white-space:nowrap;text-decoration:none}
.chip.warn{color:var(--warnink);background:var(--warnbg);border-color:transparent}
.chip.bad{color:var(--danger);border-color:var(--danger)}
main{flex:1;min-height:0;display:grid;grid-template-columns:minmax(0,1fr) 400px}
#stage{position:relative;background:#fff;min-height:0;min-width:0;overflow:hidden}
#gl{position:absolute;inset:0;width:100%;height:100%;display:block;touch-action:none}
.hud{position:absolute;pointer-events:none}
.badge{top:12px;left:12px;font-family:var(--f-mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;background:var(--panel);border:1px solid var(--line);border-radius:4px;padding:4px 8px;z-index:3}
.pickhint{top:12px;left:50%;transform:translateX(-50%);background:var(--accent);color:var(--accent-ink);border-radius:6px;padding:6px 12px;z-index:5;pointer-events:auto;font-weight:500}
.card{left:12px;top:48px;max-width:min(420px,calc(100% - 24px));background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:12px 14px;pointer-events:auto;z-index:3}
.card h2{font-family:var(--f-disp);font-size:24px;line-height:1.1;margin:0 0 4px;font-weight:600;text-wrap:balance}
.card p{margin:0;color:var(--muted)}
.note{margin-top:8px;padding:8px 10px;border-radius:6px;background:var(--notebg);font-size:13px}
.note.warning{background:var(--warnbg);color:var(--warnink)}
.note b{font-family:var(--f-mono);font-size:11px;text-transform:uppercase;letter-spacing:.06em;margin-right:6px}
.bar{left:12px;right:12px;bottom:12px;display:flex;align-items:center;gap:10px;background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:8px 10px;pointer-events:auto;flex-wrap:wrap;z-index:4}
.bar .grow{flex:1;min-width:110px;display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted)}
.bar input[type=range]{flex:1;min-width:60px;accent-color:var(--accent)}
.gizbar{top:12px;right:12px;display:flex;gap:6px;align-items:center;flex-wrap:wrap;background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:6px 8px;pointer-events:auto;z-index:4;max-width:calc(100% - 24px)}
.gizbar .seg button{padding:4px 10px;font-size:12px}
.gizbar .xyz{font-family:var(--f-mono);font-size:12px;color:var(--muted)}
.ib{border:1px solid var(--line);background:var(--panel2);border-radius:6px;padding:6px 11px;font-weight:500;min-height:34px;text-decoration:none;display:inline-flex;align-items:center;justify-content:center}
.ib:hover{border-color:var(--accent)}
.ib.pri{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.ib.danger{color:var(--danger)}
.ib.sm{min-height:28px;padding:2px 8px;font-size:12px}
.ib:disabled{opacity:.4;cursor:not-allowed}
.drop{position:absolute;inset:0;display:none;align-items:center;justify-content:center;background:color-mix(in srgb,var(--stage) 80%,transparent);border:2px dashed var(--accent);font-family:var(--f-disp);font-size:28px;pointer-events:none;z-index:8}
.drop.on{display:flex}
.busy{position:absolute;inset:0;display:none;align-items:center;justify-content:center;background:color-mix(in srgb,var(--stage) 85%,transparent);font-family:var(--f-mono);font-size:13px;flex-direction:column;gap:10px;z-index:9}
.busy.on{display:flex}
.spin{width:28px;height:28px;border:3px solid var(--line);border-top-color:var(--accent);border-radius:50%;animation:sp 1s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}
@media (prefers-reduced-motion:reduce){.spin{animation-duration:3s}}

/* annotations over the 3D view */
.ann-layer{position:absolute;inset:0;pointer-events:none;overflow:hidden;z-index:2}
.ann-layer svg{position:absolute;inset:0;width:100%;height:100%;overflow:visible}
.ann-layer line{stroke:var(--ink);stroke-width:1.5}
.ann-layer circle.dot{fill:var(--ink)}
.ab{position:absolute;transform:translate(-50%,-50%);pointer-events:auto;user-select:none;touch-action:none;cursor:default}
.ab.drag{cursor:grab}
.ab.sel{outline:2px solid var(--accent);outline-offset:3px}
.ab.badgeb{width:26px;height:26px;border-radius:50%;background:var(--panel);border:2px solid var(--ink);display:grid;place-items:center;font-family:var(--f-mono);font-weight:500;font-size:12px}
.ab.badgeb.warning{border-color:#C25B00;background:var(--warnbg);color:var(--warnink)}
.ab.badgeb.info{border-color:var(--infoink);background:var(--infobg);color:var(--infoink)}
.ab.box{background:var(--panel);border:1px solid var(--ink);border-radius:5px;padding:4px 8px;font-size:12px;max-width:190px;line-height:1.3;transform:translate(-50%,-50%)}
.ab.box.warning{background:var(--warnbg);color:var(--warnink);border-color:#C25B00}
.ab.box.info{background:var(--infobg);color:var(--infoink);border-color:var(--infoink)}
.ab.free{background:transparent;border:0;font-family:var(--f-disp);font-size:20px;font-weight:600;max-width:260px;text-shadow:0 0 3px var(--stage),0 0 3px var(--stage)}

aside{background:var(--panel);border-left:1px solid var(--line);display:flex;flex-direction:column;min-height:0;min-width:0}
.tabs{display:flex;border-bottom:1px solid var(--line);overflow-x:auto;flex:none}
.tabs button{flex:1;border:0;background:transparent;padding:10px 10px;font-family:var(--f-mono);font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);border-bottom:2px solid transparent;white-space:nowrap}
.tabs button[aria-selected="true"]{color:var(--ink);border-bottom-color:var(--accent)}
#pane{flex:1;min-height:0;overflow:auto;padding:14px 16px max(16px,env(safe-area-inset-bottom,0px))}
h3{font-family:var(--f-disp);font-size:20px;font-weight:600;margin:14px 0 8px}
h3:first-child{margin-top:0}
.sub{color:var(--muted);font-size:12px;margin:0 0 10px}
.row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.row.nw{flex-wrap:nowrap}
.list{display:flex;flex-direction:column;gap:6px;margin:8px 0 14px}
.item{display:flex;gap:10px;align-items:center;text-align:left;width:100%;background:var(--panel2);border:1px solid var(--line);border-radius:6px;padding:8px 10px}
.item[aria-current="true"]{border-color:var(--accent);box-shadow:inset 3px 0 0 var(--accent)}
.item .n{font-family:var(--f-mono);font-size:12px;color:var(--muted);min-width:22px}
.item .t{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.item .m{font-family:var(--f-mono);font-size:11px;color:var(--muted)}
label.f{display:flex;flex-direction:column;gap:3px;margin-bottom:10px;font-size:12px;color:var(--muted)}
label.f.inl{flex-direction:row;align-items:center;gap:8px}
input[type=text],input[type=number],input[type=color],textarea,select{background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:6px 9px;color:var(--ink);width:100%}
input[type=color]{padding:2px;height:34px;width:56px}
textarea{min-height:76px;resize:vertical}
.pill{display:inline-flex;gap:6px;align-items:center;font-family:var(--f-mono);font-size:11px;background:var(--panel2);border:1px solid var(--line);border-radius:999px;padding:2px 4px 2px 9px}
.pill button{border:0;background:transparent;color:var(--muted);padding:0 4px}
.xyzrow{display:grid;grid-template-columns:20px 1fr auto auto;gap:6px;align-items:center;margin-bottom:6px}
.xyzrow b{font-family:var(--f-mono);font-size:12px}
.xyzrow b.x{color:#C0392B}.xyzrow b.y{color:#2E8B57}.xyzrow b.z{color:#2F6FD0}
.xyzrow input{padding:4px 7px}
table{border-collapse:collapse;width:100%;font-size:13px}
th,td{text-align:left;padding:6px 8px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-family:var(--f-mono);font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);font-weight:500}
td.num,th.num{text-align:right;font-variant-numeric:tabular-nums;font-family:var(--f-mono)}
.tw{overflow-x:auto}
.qr{background:#fff;padding:8px;border-radius:6px;display:inline-block;border:1px solid var(--line)}
.qr img{display:block;width:176px;height:176px;image-rendering:pixelated}
.toast{position:fixed;left:50%;bottom:max(20px,env(safe-area-inset-bottom,0px));transform:translateX(-50%);background:var(--ink);color:var(--bg);padding:8px 14px;border-radius:6px;font-size:13px;z-index:30;max-width:90vw;display:flex;gap:10px;align-items:center}
.toast button{background:transparent;border:1px solid currentColor;border-radius:4px;color:inherit;padding:2px 8px}
.empty{padding:18px;border:1px dashed var(--line);border-radius:8px;color:var(--muted);text-align:center}
.prev{background:#fff;border:1px solid var(--line);border-radius:4px;display:block;width:100%;height:auto;margin:6px 0 10px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.slot{display:grid;grid-template-columns:54px 1fr;gap:6px;align-items:center;margin-bottom:6px}
.slot span{font-family:var(--f-mono);font-size:11px;color:var(--muted);text-transform:uppercase}
.slot .pair{display:grid;grid-template-columns:86px 1fr;gap:6px}
.banner{background:var(--warnbg);color:var(--warnink);border-radius:6px;padding:8px 10px;margin-bottom:10px;font-size:13px}
input[type=checkbox]{accent-color:var(--accent);width:16px;height:16px}
@media (max-width:860px){
  main{grid-template-columns:minmax(0,1fr);grid-template-rows:56dvh minmax(0,1fr)}
  aside{border-left:0;border-top:1px solid var(--line)}
  .card{bottom:118px}
  .brand i{display:none}
}

/* white print stage + view bar */
:root{--stage:#FFFFFF}
.viewbar{left:0;right:0;margin:0 auto;width:max-content;bottom:66px;display:flex;align-items:stretch;gap:0;background:#EEF2FA;border:1px solid #D4DBE8;border-radius:12px;box-shadow:0 8px 24px rgba(18,24,29,.14);padding:8px 4px;pointer-events:auto;z-index:4;flex-wrap:wrap;max-width:calc(100% - 24px);color:#12181D;font-size:12px}
.viewbar .grp{padding:0 12px;border-right:1px solid #D4DBE8;display:flex;flex-direction:column;gap:5px}
.viewbar .grp:last-child{border-right:0}
.viewbar .lab{color:#3F4A53;font-size:11px}
.viewbar .row2{display:flex;gap:4px;align-items:center;flex-wrap:wrap}
.viewbar button.vb{border:1px solid #C3CCDD;background:#fff;border-radius:7px;padding:5px 9px;font-size:12px;cursor:pointer;color:#12181D}
.viewbar button.vb[aria-pressed=true]{background:#12181D;color:#fff;border-color:#12181D}
.viewbar .sw{width:24px;height:24px;border-radius:50%;border:1px solid #9AA6BB;padding:0;cursor:pointer}
.viewbar .sw[aria-pressed=true]{box-shadow:0 0 0 2px #fff,0 0 0 4px #0B6E69}
.viewbar input[type=color]{width:26px;height:26px;border:1px solid #9AA6BB;border-radius:50%;padding:0;background:none;cursor:pointer}
.viewbar input[type=range]{width:90px;accent-color:#0B6E69}
.viewbar .vtog{align-self:center;margin:0 6px}
.viewbar.min .grp{display:none}
.viewbar.min{padding:4px}
.ann-layer .ab.arr{pointer-events:none}
.toolgrid{display:grid;gap:8px}
.tool{display:flex;align-items:center;gap:12px;border:1px solid var(--line);border-radius:9px;padding:9px 12px;background:var(--panel);text-align:left;cursor:pointer;color:var(--ink);font-size:14px;font-weight:500}
.tool[aria-pressed=true]{border-color:var(--ink);box-shadow:inset 0 0 0 1px var(--ink)}
.tool small{margin-left:auto;font-family:var(--f-mono);font-size:11px;color:var(--muted);font-weight:400}
.perpage{display:flex;gap:6px;margin-bottom:6px}
.perpage button{width:44px;height:44px;border:1px solid var(--line);border-radius:8px;background:var(--panel);font-family:var(--f-mono);font-size:14px;cursor:pointer;color:var(--ink)}
.perpage button[aria-pressed=true]{border:2px solid var(--accent);font-weight:500}
.orient{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:8px}
.orient button{display:flex;align-items:center;gap:10px;padding:10px;border:1px solid var(--line);border-radius:9px;background:var(--panel);cursor:pointer;color:var(--ink);font-size:13px}
.orient button[aria-pressed=true]{border:2px solid var(--accent);font-weight:500}
.orient i{display:block;border:1.5px solid var(--ink);border-radius:2px}

.ann-layer line.a2{stroke:#C25B00;stroke-width:2.4}
.ann-layer line.a2.line3d{stroke-dasharray:6 5}
.ann-layer line.a2.dimension,.ann-layer line.dimtick{stroke:#12181D;stroke-width:1.4}
.ann-layer polygon.a2head{fill:#C25B00}
.ab.dim{font-family:var(--f-mono);font-size:12px;background:#fff;color:#12181D;border:0;padding:1px 6px;pointer-events:auto}
.ab.chk{white-space:pre-line;text-align:left;background:#fff;color:#12181D;border:1px solid #12181D;border-radius:2px;font-size:12px;line-height:1.4;padding:6px 9px}

[hidden]{display:none !important}
.viewbar.min{width:auto;left:12px;right:auto;margin:0}

/* print area, view bar tabs, new annotation types, export cards */
.pframe{position:absolute;pointer-events:none;z-index:1;border:1.5px dashed #0B6E69;box-shadow:0 0 0 9999px rgba(18,24,29,.07)}
.pframe span{position:absolute;left:0;top:-20px;font-family:var(--f-mono);font-size:10px;color:#0B6E69;background:#fff;padding:1px 6px;border-radius:3px;white-space:nowrap;border:1px solid #0B6E69}
.viewbar{flex-direction:column;padding:6px 6px 8px;width:max-content;max-width:calc(100% - 24px)}
.viewbar .vtabs{display:flex;gap:4px;align-items:center;padding:0 6px 6px;border-bottom:1px solid #D4DBE8;margin-bottom:8px}
.viewbar .vt{border:0;background:transparent;border-radius:6px;padding:4px 10px;font-size:12px;cursor:pointer;color:#3F4A53}
.viewbar .vt[aria-selected=true]{background:#fff;color:#12181D;font-weight:600;box-shadow:0 0 0 1px #C3CCDD}
.viewbar .vbody{display:flex;flex-wrap:wrap;align-items:stretch;padding:0 2px}
.viewbar.min{width:auto}
.viewbar .vtog{margin:0 4px 0 0}
.viewbar input[type=range]{width:96px}
.ab.detail{border-radius:50%;border:2px solid #12181D;background:#fff;box-shadow:0 2px 8px rgba(18,24,29,.2);cursor:default}
.ab.detail.drag{cursor:grab}
.ab.imgann{height:auto;display:block;border:0;background:transparent}
.ab.imgann.drag{cursor:grab}
.ann-layer line.detline{stroke:#12181D;stroke-width:1.5}
.ann-layer circle.detring{fill:none;stroke:#12181D;stroke-width:1.5}
.ann-layer line.dimext{stroke:#12181D;stroke-width:1}
.ann-layer line.dimline{stroke:#12181D;stroke-width:1.2}
.ann-layer polygon.dimhead{fill:#12181D}
.xcard{display:flex;justify-content:space-between;align-items:center;gap:10px;border:1px solid var(--line);border-radius:9px;padding:10px 12px;margin-bottom:8px;background:var(--panel)}
.xcard.col{flex-direction:column;align-items:stretch}
.xcard b{display:block}
.xcard .sub{margin:0}
header .ib.sm{min-height:28px}

.edbar{left:12px;top:12px;display:flex;gap:6px;background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:5px 6px;pointer-events:auto;z-index:4}
.ann-layer line.a2hit{stroke:transparent;stroke-width:16;pointer-events:stroke;cursor:pointer}
.ann-layer line.a2.sel{stroke:#0B6E69;stroke-width:3.4}
.ab.sel{outline:2px solid #0B6E69;outline-offset:3px}