:root{
  --bg:#08121c; --panel:#0e1f2e; --panel2:#132a3d; --line:#1d4a63; --cyan:#19d3ff; --cyan-dim:#0f7fa0;
  --text:#bfefff; --muted:#6f98ab; --white:#f2fbff; --yellow:#ffc21a; --ok:#3ddc84; --warn:#ffb020; --bad:#ff4d5e;
  --t-floor:#3ddc84; --t-wall:#ff4d5e; --t-jump:#ffa23a; --t-stairs:#3d8bff; --t-ignore:#7a8796;
}
*{box-sizing:border-box}
html,body{margin:0;height:100%;background:var(--bg);color:var(--text);font:14px/1.4 "Roboto Condensed",system-ui,sans-serif;overflow:hidden}
button{font:inherit;cursor:pointer}
h1,h2,h3{font-family:Rajdhani,"Roboto Condensed",sans-serif;color:var(--white);letter-spacing:.04em;margin:0}
.app{display:grid;grid-template-rows:52px 1fr auto;height:100%}
/* top bar */
.top{display:flex;align-items:center;gap:14px;padding:0 14px;background:linear-gradient(#0f2537,#0b1a28);border-bottom:1px solid var(--line)}
.logo{font-family:Rajdhani;font-weight:700;font-size:20px;color:var(--white);white-space:nowrap}
.logo b{color:var(--cyan)}
.steps{display:flex;gap:4px;margin-left:10px}
.step{background:transparent;border:1px solid var(--line);color:var(--muted);padding:6px 12px;border-radius:3px;white-space:nowrap}
.step.on{border-color:var(--cyan);color:var(--white);background:rgba(25,211,255,.12)}
.step:disabled{opacity:.4;cursor:default}
.step i{font-style:normal;color:var(--cyan);margin-right:6px}
.spacer{flex:1}
.chip{border:1px solid var(--line);padding:4px 10px;border-radius:12px;font-size:12px;white-space:nowrap;color:var(--muted)}
.chip .dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--ok);margin-right:6px}
.role{display:flex;border:1px solid var(--line);border-radius:3px;overflow:hidden}
.role button{background:none;border:0;color:var(--muted);padding:5px 10px}
.role button.on{background:var(--cyan-dim);color:var(--white)}
/* body */
.main{display:grid;grid-template-columns:380px 1fr 300px;min-height:0}
.side{background:var(--panel);border-right:1px solid var(--line);display:flex;flex-direction:column;min-height:0}
.side.right{border-right:0;border-left:1px solid var(--line)}
.sidehead{padding:12px 14px;border-bottom:1px solid var(--line)}
.sidehead p{margin:4px 0 0;color:var(--muted);font-size:12.5px}
.scroll{overflow:auto;flex:1;padding:10px 12px}
.view{position:relative;min-width:0}
#gl{position:absolute;inset:0}
.hud{position:absolute;left:12px;top:12px;display:flex;gap:6px;flex-wrap:wrap}
.hud button,.btn{background:var(--panel2);border:1px solid var(--line);color:var(--text);padding:6px 10px;border-radius:3px}
.hud button.on{border-color:var(--cyan);color:var(--white)}
.btn.primary{background:var(--yellow);color:#1b1300;border-color:#c99300;font-weight:700}
.btn.cyan{border-color:var(--cyan);color:var(--white)}
.btn:disabled{opacity:.45;cursor:default}
.hint{position:absolute;left:50%;bottom:14px;transform:translateX(-50%);background:rgba(8,18,28,.85);border:1px solid var(--line);padding:6px 12px;border-radius:3px;color:var(--muted);font-size:12.5px;pointer-events:none;white-space:nowrap}
.legend{position:absolute;right:12px;top:12px;background:rgba(8,18,28,.85);border:1px solid var(--line);border-radius:3px;padding:8px 10px;font-size:12px}
.legend div{display:flex;align-items:center;gap:6px;margin:2px 0}
.sw{width:11px;height:11px;border-radius:2px;display:inline-block}
.label{position:absolute;transform:translate(-50%,-100%);font-size:11px;padding:1px 6px;border-radius:2px;white-space:nowrap;pointer-events:none;background:rgba(8,18,28,.8);border:1px solid var(--line);color:var(--white)}
.pin{position:absolute;transform:translate(-50%,-100%);pointer-events:auto;cursor:pointer;font-size:11.5px;padding:2px 7px;border-radius:10px;white-space:nowrap;color:#fff;font-weight:700}
.pin.bad{background:var(--bad)} .pin.warn{background:var(--warn);color:#241500}
.empty3d{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:15px;pointer-events:none}
/* cards / rows */
.card{border:1px solid var(--line);background:var(--panel2);border-radius:4px;padding:12px;margin-bottom:10px}
.card h3{font-size:16px;margin-bottom:4px}
.card p{margin:0 0 8px;color:var(--muted);font-size:12.5px}
.drop{border:1px dashed var(--cyan-dim);border-radius:4px;padding:16px;text-align:center;color:var(--muted);margin-bottom:8px}
textarea{width:100%;min-height:86px;background:#081621;color:var(--text);border:1px solid var(--line);border-radius:3px;padding:8px;font:inherit;resize:vertical}
.rows{display:flex;flex-direction:column;gap:3px}
.row{display:grid;grid-template-columns:1fr 92px;gap:6px;align-items:center;padding:6px 8px;border:1px solid transparent;border-radius:3px;background:#0b1b29;cursor:pointer}
.row:hover{border-color:var(--line)}
.row.sel{border-color:var(--cyan);background:#0f2a3d}
.row .nm{color:var(--white);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.row .nm small{color:var(--muted);margin-left:4px}
.row .why{grid-column:1/3;color:var(--muted);font-size:11.5px;margin-top:-2px}
.row.changed .nm::after{content:" · changed";color:var(--yellow);font-size:11px}
select{background:#081621;color:var(--white);border:1px solid var(--line);border-radius:3px;padding:3px 4px;font:inherit;width:100%}
.filters{display:flex;gap:4px;flex-wrap:wrap;margin-bottom:8px}
.filters button{background:none;border:1px solid var(--line);color:var(--muted);border-radius:12px;padding:2px 9px;font-size:12px}
.filters button.on{border-color:var(--cyan);color:var(--white)}
.check{display:flex;gap:8px;align-items:flex-start;padding:5px 0;border-bottom:1px solid rgba(29,74,99,.5);font-size:13px}
.check .ic{width:16px;flex:none;text-align:center;font-weight:700}
.ic.ok{color:var(--ok)} .ic.bad{color:var(--bad)} .ic.warn{color:var(--warn)} .ic.auto{color:var(--muted)}
.check small{display:block;color:var(--muted)}
.mode{margin-bottom:12px}
.mode h3{font-size:15px;margin-bottom:2px}
.palette{display:grid;grid-template-columns:1fr 1fr;gap:6px;margin-bottom:12px}
.pal{background:#0b1b29;border:1px solid var(--line);color:var(--white);border-radius:3px;padding:8px 6px;text-align:left;font-size:12.5px}
.pal.on{border-color:var(--yellow);box-shadow:0 0 0 1px var(--yellow) inset}
.pal .sw{margin-right:6px;vertical-align:-1px}
.pal em{display:block;font-style:normal;font-size:10.5px;color:var(--yellow)}
.files{width:100%;border-collapse:collapse;font-size:12.5px}
.files td{padding:4px 2px;border-bottom:1px solid rgba(29,74,99,.5)}
.files td:last-child{text-align:right;color:var(--muted)}
.status{padding:8px 10px;border-radius:3px;margin:8px 0;font-size:13px}
.status.wait{background:rgba(255,176,32,.12);border:1px solid var(--warn);color:#ffd27a}
.status.ok{background:rgba(61,220,132,.1);border:1px solid var(--ok);color:#9ff0c2}
.badge{font-size:10.5px;color:var(--yellow);border:1px solid #6b5410;border-radius:8px;padding:0 6px;margin-left:6px}
/* job log */
.log{border-top:1px solid var(--line);background:#06101a;height:30px;transition:height .2s;overflow:hidden;display:flex;flex-direction:column}
.log.open{height:170px}
.loghead{display:flex;align-items:center;gap:10px;padding:5px 12px;cursor:pointer;color:var(--muted);font-size:12.5px;flex:none}
.bar{flex:1;max-width:320px;height:6px;background:#0f2433;border-radius:3px;overflow:hidden}
.bar i{display:block;height:100%;width:0;background:var(--cyan);transition:width .3s}
.loglines{flex:1;overflow:auto;padding:0 12px 8px;font:12px/1.45 Consolas,monospace;color:#8fc9dd;white-space:pre}
.hidden{display:none!important}
@media (max-width:1100px){.main{grid-template-columns:330px 1fr}.side.right{display:none}}
/* real app additions */
.field{display:block;margin:0 0 8px}
.field span{display:block;font-size:12px;color:var(--muted);margin-bottom:3px}
.field input{width:100%;background:#081621;color:var(--white);border:1px solid var(--line);border-radius:3px;padding:6px 8px;font:inherit}
.err{color:#ff9aa4;font-size:12.5px;margin:6px 0}
.maplist .check{cursor:pointer}
.maplist .check:hover{background:#0f2a3d}
.steplist{display:flex;gap:6px;flex-wrap:wrap;font-size:11.5px;margin-left:10px}
.steplist span{padding:1px 7px;border-radius:9px;border:1px solid var(--line);color:var(--muted)}
.steplist span.done{border-color:var(--ok);color:#9ff0c2}
.steplist span.now{border-color:var(--cyan);color:var(--white)}
.disabled-card{opacity:.55}
/* tagging help + the tag bar over the 3D view */
.howto{margin-top:6px;font-size:12.5px;color:var(--muted)}
.howto summary{cursor:pointer;color:var(--cyan);font-weight:700}
.howto ol{margin:6px 0 6px 18px;padding:0}
.howto li{margin:2px 0}
.howto b{color:var(--white)}
.taghelp div{margin:2px 0}
.kbd{display:inline-block;border:1px solid var(--line);border-bottom-width:2px;border-radius:3px;padding:0 5px;font-size:11.5px;color:var(--white)}
.tagbar{position:absolute;left:50%;top:56px;transform:translateX(-50%);background:rgba(8,18,28,.94);border:1px solid var(--cyan);border-radius:5px;padding:10px 12px;max-width:min(680px,92%);box-shadow:0 6px 24px rgba(0,0,0,.45)}
.tagbar .what{color:var(--white);font-size:14px;margin-bottom:8px}
.tagbar .what small{color:var(--muted);margin-left:6px}
.tagbar .btns{display:flex;gap:6px;flex-wrap:wrap}
.tagbar .tb{border:2px solid transparent;border-radius:4px;padding:7px 12px;font-weight:700;color:#08121c;cursor:pointer;font-size:14px}
.tagbar .tb.cur{border-color:#fff;box-shadow:0 0 0 2px rgba(255,255,255,.25)}
.tagbar .tb i{font-style:normal;opacity:.65;margin-right:5px}
.tagbar .x{background:none;border:1px solid var(--line);color:var(--muted);border-radius:4px;padding:6px 10px;cursor:pointer}
.row .nm .fld{color:var(--muted);font-size:11px;margin-right:4px}
/* material library browser */
.modal{position:fixed;inset:0;background:rgba(4,10,16,.78);display:flex;align-items:center;justify-content:center;z-index:50}
.modalbox{background:var(--panel);border:1px solid var(--cyan);border-radius:6px;width:min(1100px,94vw);height:min(760px,90vh);display:flex;flex-direction:column;padding:14px 16px}
.modalhead{display:flex;align-items:center;gap:12px;margin-bottom:6px}
/* min-height:0 lets the grid shrink inside the window's column and scroll (D-293); rows keep their size */
.libgrid{flex:1 1 auto;min-height:0;overflow-y:auto;overscroll-behavior:contain;display:grid;grid-template-columns:repeat(auto-fill,minmax(118px,1fr));grid-auto-rows:max-content;align-content:start;gap:8px;padding-right:6px}
.libgrid::-webkit-scrollbar{width:10px}
.libgrid::-webkit-scrollbar-thumb{background:#1d4a63;border-radius:5px;border:2px solid var(--panel)}
.libgrid::-webkit-scrollbar-thumb:hover{background:var(--cyan)}
.modalbox>*:not(.libgrid){flex:none}
#libModal .modalbox{overflow-y:auto}
#libModal .libgrid{min-height:140px}   /* a small window: the grid keeps some room, the window itself scrolls */
#libAddBar{max-height:34vh;overflow-y:auto}
.libsearch{background:#081621;color:var(--white);border:1px solid var(--line);border-radius:3px;padding:4px 8px;font:inherit;width:200px}
.libitem{background:#0b1b29;border:1px solid var(--line);border-radius:4px;padding:5px;cursor:pointer;font-size:11.5px;color:var(--text)}
.libitem:hover{border-color:var(--cyan)}
.libitem img{width:100%;aspect-ratio:1;object-fit:cover;border-radius:3px;display:block;background:#06101a}
.libitem b{display:block;color:var(--white);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;margin-top:3px}
.libitem small{color:var(--muted)}
.libitem.copied{border-color:var(--ok)}
/* edit with Claude */
.editbox{border-bottom:1px solid var(--line);padding:10px 12px;background:var(--panel2)}
.editbox h3{font-size:16px;margin:0 0 2px}
.editbox p{margin:2px 0 6px;color:var(--muted);font-size:12.5px}
.editbox textarea{min-height:76px;font-size:13px}
.editbox .row2{display:flex;gap:6px;flex-wrap:wrap;margin-top:6px}
.editbox input[type=number]{background:#081621;color:var(--white);border:1px solid var(--line);border-radius:3px;padding:3px 5px;font:inherit}
/* marker controls */
.mk{display:flex;align-items:center;gap:6px;padding:5px 6px;border:1px solid transparent;border-radius:3px;cursor:pointer;font-size:13px}
.mk:hover{border-color:var(--line)}
.mk.sel{border-color:var(--yellow);background:#14262f}
.mk .nm{flex:1;min-width:0;color:var(--white)}
.mk .nm small{display:block;color:var(--muted)}
.mk button,.markerctl button{background:#0b1b29;border:1px solid var(--line);color:var(--text);border-radius:3px;padding:2px 7px;cursor:pointer;font-size:13px}
.mk button:hover,.markerctl button:hover{border-color:var(--cyan)}
.mk button.del,.markerctl button.del{color:#ff9aa4}
.mk input,.markerctl input{width:52px;background:#081621;color:var(--white);border:1px solid var(--line);border-radius:3px;padding:2px 4px;font:inherit}
.markerctl{display:flex;gap:6px;flex-wrap:wrap;align-items:center}
/* size advice (D-284) */
.sizeadvice{border:1px solid var(--yellow);background:rgba(255,194,26,.1);border-radius:4px;padding:7px 9px;margin:4px 0 6px;font-size:12.5px;color:#ffe08a}
.sizeadvice b{color:var(--white)}
.editbox.attention{box-shadow:inset 0 0 0 2px var(--yellow);animation:pulse 1.6s ease-in-out 3}
@keyframes pulse{50%{box-shadow:inset 0 0 0 2px rgba(255,194,26,.25)}}
/* AI picker (D-285) */
.aipick{display:flex;gap:8px;flex-wrap:wrap;margin:6px 0 8px}
.aipick label{display:flex;gap:5px;align-items:center;font-size:12px;color:var(--muted);flex:1 1 140px}
.aipick select{width:auto;flex:1;min-width:0}
/* walk mode (D-290) */
.hud button#walkBtn.on{background:var(--yellow);color:#111}
.walkoverlay{position:absolute;inset:0;pointer-events:none}
.walkoverlay .cross{position:absolute;left:50%;top:50%;width:14px;height:14px;margin:-7px 0 0 -7px;border:2px solid rgba(25,211,255,.85);border-radius:50%}
.walkhelp{position:absolute;left:50%;bottom:14px;transform:translateX(-50%);background:rgba(6,18,28,.82);border:1px solid var(--line);border-radius:4px;padding:6px 10px;font-size:12.5px;color:var(--text);pointer-events:auto;white-space:nowrap;display:flex;gap:8px;align-items:center}
.walkhelp #walkInfo{color:var(--cyan)}
.walkpaused{position:absolute;left:50%;top:40%;transform:translateX(-50%);background:rgba(6,18,28,.9);border:1px solid var(--yellow);color:#ffe08a;border-radius:4px;padding:10px 14px;font-size:14px}
/* textures per kind of object (D-291) */
.pickbar{border:1px solid var(--yellow);background:rgba(255,194,26,.08);border-radius:4px;padding:8px 10px;margin:0 0 8px;font-size:12.5px}
.pickbar input[type=color]{width:34px;height:22px;padding:0;border:1px solid var(--line);background:none;vertical-align:middle}
.pickbar input[type=number]{background:#081621;color:var(--white);border:1px solid var(--line);border-radius:3px;padding:2px 5px;font:inherit}
.tagbar .texbtn{display:inline-flex;align-items:center;gap:6px}
.tagbar .texsw{width:22px;height:22px;border-radius:3px;border:1px solid var(--line);background:#081621 center/cover no-repeat;display:inline-block}
.row .paintmark{color:var(--yellow);font-size:11px;margin-left:4px}
/* the maker's own textures (D-292) */
.libitem{position:relative}
.libitem .libdel{position:absolute;top:3px;right:3px;background:rgba(6,18,28,.85);border:1px solid var(--line);color:#ff9aa4;border-radius:3px;font-size:11px;line-height:1;padding:3px 5px;cursor:pointer}
.libadd-row{display:flex;gap:8px;align-items:center;margin:4px 0;flex-wrap:wrap}
.libadd-row img{width:40px;height:40px;object-fit:cover;border-radius:3px}
.libadd-row input[type=text]{background:#081621;color:var(--white);border:1px solid var(--line);border-radius:3px;padding:3px 6px;font:inherit;width:180px}
/* layout editor (D-294) */
.edpanel{border:1px solid var(--cyan);border-radius:4px;padding:8px 10px;margin-top:10px;background:rgba(25,211,255,.04)}
.edpanel .row2{display:flex;gap:6px;flex-wrap:wrap;align-items:center}
.edpanel .spacer{flex:1}
.edpanel .btn.on,#edToggle.on{border-color:var(--yellow);color:var(--yellow)}
.edadd{display:flex;gap:4px;flex-wrap:wrap;margin-bottom:8px}
.edadd .btn{padding:3px 8px;font-size:12px}
.edgrid{display:grid;grid-template-columns:1fr 1fr;gap:4px 10px;margin:6px 0}
.edf{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--muted)}
.edf span{flex:0 0 92px}
.edf input[type=number],.edf input:not([type]),.edf select{flex:1;min-width:0;background:#081621;color:var(--white);border:1px solid var(--line);border-radius:3px;padding:2px 5px;font:inherit}
.edf .btn{padding:2px 6px;font-size:11.5px}
/* props (D-295) */
#propModal .modalbox{overflow-y:auto}
#propModal .libgrid{min-height:140px}
#propGrid img{background:radial-gradient(#13293a,#06101a)}
/* ground painting (D-297) */
.gpaint{border-top:1px solid var(--line);margin-top:8px;padding-top:8px}
.gpaint .row2{margin-bottom:6px}
.gpaint .btn.on{border-color:var(--yellow);color:var(--yellow)}
.gpbrush{display:inline-flex;align-items:center;gap:5px;padding:2px 8px 2px 3px}
.gpbrush i{width:20px;height:20px;border-radius:3px;background:#081621 center/cover;display:inline-block}
.gpbrush.on{border-color:var(--yellow)!important;color:var(--yellow)}