*{box-sizing:border-box}html,body{height:100%;margin:0}body{font:13px/1.35 system-ui,Segoe UI,Arial,sans-serif;background:#14191d;color:#dce3ea;overflow:hidden}button,input,select{font:inherit;color:inherit;background:#252c32;border:1px solid #3b4650;border-radius:4px}button{padding:6px 9px;cursor:pointer}button:hover{background:#303941}button:disabled{opacity:.45;cursor:default}button.primary{background:#176a9d;border-color:#319edc}.topbar,.toolrow{height:42px;display:flex;align-items:center;gap:6px;padding:5px 8px;background:#1b2126;border-bottom:1px solid #333d45}.toolrow{height:38px}.brand{display:flex;align-items:baseline;gap:8px}.brand span{font-size:11px;color:#8797a4}.sep{width:1px;height:24px;background:#3c4650;margin:0 4px}.grow{flex:1}.layout{display:grid;grid-template-columns:300px 1fr 310px;height:calc(100% - 106px)}.panel{background:#1a2025;overflow:auto}.left{border-right:1px solid #343e46}.right{border-left:1px solid #343e46;padding:0 10px 10px}.panelHeader{height:34px;display:flex;align-items:center;justify-content:space-between;padding:5px 8px;border-bottom:1px solid #303941;background:#1d242a;position:sticky;top:0;z-index:5;color:#91a1ad;font-size:11px;text-transform:uppercase;letter-spacing:.08em}.panelToggle{padding:3px 8px}.tabs{display:flex;position:sticky;top:34px;z-index:4;background:#1a2025;padding:8px 8px 0}.tab{flex:1}.tab.active,[data-tool].active,.orientations button.active{background:#185b8d;border-color:#318aca}.tabbody{display:none;padding:8px}.tabbody.active{display:block}.search,select,input[type=number]{width:100%;padding:7px;margin-bottom:7px}.hint{font-size:11px;color:#8c9ba7;margin:5px 0 8px}.check{display:block;color:#a4b1ba;font-size:11px;margin:5px 0 8px}.tilelist{display:grid;grid-template-columns:repeat(3,1fr);gap:5px}.tilecard{min-width:0;padding:4px;background:#22292f;border:1px solid #323c44;border-radius:4px;cursor:pointer}.tilecard.selected,.furnitureitem.selected{border-color:#4aa3df;background:#263744}.tilecard canvas{display:block;width:100%;height:82px;background:#14191d;image-rendering:pixelated}.tilecard .name{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:10px;margin-top:3px}.furniturelist{display:flex;flex-direction:column;gap:5px}.furnitureitem{display:grid;grid-template-columns:78px minmax(0,1fr);gap:8px;align-items:center;padding:6px;background:#22292f;border:1px solid #323c44;border-radius:4px;cursor:pointer}.furniturethumb{width:78px;height:72px;background:#14191d;border:1px solid #303941;border-radius:4px;image-rendering:pixelated}.furnituretext{min-width:0}.furnituretext b,.furnituretext small{display:block;overflow:hidden;text-overflow:ellipsis}.furnituretext small{color:#8fa1ad;font-size:10px;white-space:normal;word-break:break-word}.stage{position:relative;overflow:hidden;background:#101519}#glCanvas,#overlayCanvas{position:absolute;inset:0;width:100%;height:100%}#glCanvas{image-rendering:pixelated}#overlayCanvas{touch-action:none;outline:none}#stageBadge{position:absolute;top:8px;left:8px;padding:4px 7px;background:#111b;border:1px solid #ffffff22;border-radius:4px}.stagePanelToggle{position:absolute;z-index:8;top:10px;background:#1b2228dd}.leftOpen{left:8px}.rightOpen{right:8px}.hidden{display:none!important}.right h3{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:#93a2ae;margin:12px 0 7px}#previewCanvas{width:100%;height:180px;background:#12171b;border:1px solid #343e46;border-radius:4px;image-rendering:pixelated}.selectionInfo{font-size:11px;color:#aebac4;white-space:pre-line;word-break:break-word;margin:6px 0}.orientations{display:flex;gap:4px;flex-wrap:wrap}.orientations button{padding:3px 7px}.row{display:flex;gap:6px;align-items:center;margin:5px 0}.row>*{flex:1}.row button{flex:0 0 auto}.row select{margin:0;min-width:90px}.layers{display:flex;flex-direction:column;gap:4px}.layer{display:grid;grid-template-columns:26px 28px 1fr 55px 26px 26px 26px;gap:3px;align-items:center;padding:4px;border:1px solid #323c44;border-radius:4px;background:#22292f}.layer.active{border-color:#4aa3df;background:#263744}.layer .lname{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;cursor:pointer}.layer input[type=range]{width:55px}.iconbtn{padding:3px;width:26px}.viewFilters{display:grid;grid-template-columns:1fr 1fr;gap:4px}.viewFilter{padding:5px 6px;text-align:left;font-size:11px}.viewFilter.off{opacity:.45;text-decoration:line-through}.coords2{display:grid;grid-template-columns:1fr 1fr;gap:8px}footer{height:26px;background:#1b2126;border-top:1px solid #343e46;display:flex;justify-content:space-between;align-items:center;padding:0 9px;color:#9cabb6;font-size:11px}.dialog{width:min(720px,92vw);max-height:90vh;padding:0;border:1px solid #46515b;border-radius:8px;background:#171d22;color:#dce3ea;box-shadow:0 20px 70px #000b}.dialog::backdrop{background:#0009}.dialog form{margin:0}.dialogTitle{display:flex;align-items:flex-start;justify-content:space-between;padding:14px 16px;background:#20272d;border-bottom:1px solid #39434c}.dialogTitle small{display:block;color:#8fa0ac}.dialogBody{padding:14px 16px;overflow:auto;max-height:70vh}.dialogBody section{padding:10px 0;border-bottom:1px solid #303941}.dialogBody h4{margin:0 0 9px;font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:#94a4b0}.dialogBody label{display:block;color:#a9b5be;margin-top:6px}.dialogActions{display:flex;justify-content:flex-end;padding:11px 16px;background:#20272d;border-top:1px solid #39434c}.importStatus{margin-top:12px;padding:9px;border:1px solid #34414b;background:#11171c;border-radius:4px;color:#a9b9c5}.layout.left-collapsed{grid-template-columns:0 1fr 310px}.layout.right-collapsed{grid-template-columns:300px 1fr 0}.layout.left-collapsed.right-collapsed{grid-template-columns:0 1fr 0}.layout.left-collapsed .left,.layout.right-collapsed .right{overflow:hidden;border:0;padding:0;visibility:hidden}@media(max-width:1050px){.layout{grid-template-columns:250px 1fr 260px}.layout.left-collapsed{grid-template-columns:0 1fr 260px}.layout.right-collapsed{grid-template-columns:250px 1fr 0}}@media(max-width:700px){.coords2{grid-template-columns:1fr}}
.performanceStats{position:absolute;left:8px;bottom:8px;z-index:9;min-width:190px;padding:7px 9px;border:1px solid #3d4a54;border-radius:5px;background:#0d1317dd;color:#c8d4dc;font:11px/1.4 ui-monospace,SFMono-Regular,Consolas,monospace;white-space:pre;pointer-events:none;box-shadow:0 3px 14px #0007}

/* Release onboarding, feedback, and security-conscious UI helpers */
textarea{font:inherit;color:inherit;background:#141a1f;border:1px solid #3b4650;border-radius:4px;width:100%;padding:8px;resize:vertical}
.feedbackDialog input[type=text],.feedbackDialog input[type=email],.feedbackDialog #feedbackContact{width:100%;padding:7px}
.tutorialOverlay{position:fixed;inset:0;z-index:6000;background:transparent;display:flex;align-items:flex-end;justify-content:center;padding:28px;pointer-events:none;transition:background .15s}
.tutorialOverlay.noTarget{background:rgba(4,8,11,.28)}
.tutorialOverlay.cardTop{align-items:flex-start}
.tutorialCard{position:relative;z-index:2;width:min(680px,calc(100vw - 32px));padding:18px;background:#1a2228;border:1px solid #4c5c68;border-radius:10px;box-shadow:0 18px 52px #0008;pointer-events:auto}
.tutorialCard h2{margin:2px 0 8px;font-size:20px}.tutorialCard p{margin:0 0 14px;color:#c2cdd5;font-size:14px;line-height:1.5}.tutorialProgress{font-size:11px;color:#8294a1;text-transform:uppercase;letter-spacing:.08em}.tutorialRemember{display:flex;align-items:center;gap:7px;color:#9eacb6;font-size:12px;margin-top:8px}.tutorialActions{display:flex;align-items:center;gap:7px;margin-top:16px}
.tutorialSpotlight{position:fixed;z-index:1;border:2px solid #63c1ff;border-radius:9px;box-shadow:0 0 0 9999px rgba(4,8,11,.34),0 0 0 3px rgba(99,193,255,.16),0 0 22px rgba(57,168,239,.5);pointer-events:none;opacity:0;transition:left .15s,top .15s,width .15s,height .15s,opacity .12s}
.tutorialSpotlight.active{opacity:1}.tutorialOverlay.hidden .tutorialSpotlight{display:none}
.dialog.tutorialVisibleDialog{position:fixed;z-index:5500}.clipboardFallback{position:fixed;left:-10000px;top:-10000px;width:1px;height:1px;opacity:0}
#supportBtn{border-color:#735f2c;background:#3a321d}#supportBtn:hover{background:#4a4025}
@media(max-width:700px){.tutorialOverlay{padding:12px}.tutorialCard{width:100%}.topbar{overflow-x:auto}.tutorialActions{flex-wrap:wrap}}

.nightModeSwitch{display:inline-flex;align-items:center;gap:6px;padding:0 3px;color:#aebbc4;font-size:11px;cursor:pointer;user-select:none;white-space:nowrap}.nightModeSwitch input{position:absolute;opacity:0;pointer-events:none}.switchTrack{position:relative;width:34px;height:18px;border-radius:999px;background:#48535c;border:1px solid #596671;transition:background .15s,border-color .15s}.switchKnob{position:absolute;top:2px;left:2px;width:12px;height:12px;border-radius:50%;background:#d9e4eb;transition:transform .15s}.nightModeSwitch input:checked+.switchTrack{background:#176a9d;border-color:#319edc}.nightModeSwitch input:checked+.switchTrack .switchKnob{transform:translateX(16px)}

body.lightMode{background:#eef2f5;color:#26343d}
body.lightMode button,body.lightMode input,body.lightMode select,body.lightMode textarea{color:#26343d;background:#fff;border-color:#b7c3cc}
body.lightMode button:hover{background:#e7edf2}body.lightMode button.primary{color:#fff;background:#176a9d;border-color:#176a9d}
body.lightMode .topbar,body.lightMode .toolrow,body.lightMode footer{background:#e2e8ed;border-color:#bcc8d1}
body.lightMode .brand span,body.lightMode .hint,body.lightMode .selectionInfo,body.lightMode .furnituretext small,body.lightMode footer{color:#60717d}
body.lightMode .sep{background:#b7c2ca}body.lightMode .panel{background:#edf1f4}body.lightMode .left,body.lightMode .right{border-color:#bdc8d0}
body.lightMode .panelHeader{background:#e3e9ed;border-color:#c3ccd3;color:#556773}body.lightMode .tabs{background:#edf1f4}
body.lightMode .tilecard,body.lightMode .furnitureitem,body.lightMode .layer{background:#fff;border-color:#c3cdd5}body.lightMode .tilecard.selected,body.lightMode .furnitureitem.selected,body.lightMode .layer.active{background:#dceefa;border-color:#4a98c8}
body.lightMode .tilecard canvas,body.lightMode .furniturethumb,body.lightMode #previewCanvas{background:#f5f7f8;border-color:#c5cfd6}
body.lightMode .stage{background:#e8edf1}body.lightMode #stageBadge{background:#f8fafbd9;border-color:#91a0aa;color:#33434d}
body.lightMode .right h3,body.lightMode .dialogBody h4{color:#50636f}body.lightMode .viewFilter.off{opacity:.5}
body.lightMode .dialog{background:#f7f9fa;color:#26343d;border-color:#aebbc5;box-shadow:0 18px 60px #40505a33}body.lightMode .dialogTitle,body.lightMode .dialogActions{background:#e8edf1;border-color:#c4ced5}body.lightMode .dialogTitle small,body.lightMode .dialogBody label{color:#5f707b}body.lightMode .dialogBody section{border-color:#ccd5db}body.lightMode .importStatus{background:#fff;border-color:#c7d1d8;color:#43545f}
body.lightMode .performanceStats{background:#ffffffeb;color:#2e414d;border-color:#b5c2ca;box-shadow:0 3px 14px #40505a22}
body.lightMode .tutorialCard{background:#fff;color:#26343d;border-color:#9eabb5;box-shadow:0 18px 52px #44545f33}body.lightMode .tutorialCard p{color:#465965}body.lightMode .tutorialProgress,body.lightMode .tutorialRemember{color:#62747f}body.lightMode .tutorialOverlay.noTarget{background:rgba(55,70,80,.18)}body.lightMode .tutorialSpotlight{box-shadow:0 0 0 9999px rgba(55,70,80,.24),0 0 0 3px rgba(45,142,202,.14),0 0 22px rgba(45,142,202,.4)}
body.lightMode #supportBtn{background:#fff8df;border-color:#b99a3e}body.lightMode #supportBtn:hover{background:#fff1bf}
body.lightMode .nightModeSwitch{color:#4e626f}body.lightMode .switchTrack{background:#c8d1d7;border-color:#aab6bf}body.lightMode .switchKnob{background:#fff}
.creditsDialog p{margin:0 0 10px}.creditsDialog a{color:#69baf1}body.lightMode .creditsDialog a{color:#176a9d}
.versionButton {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--muted);
  padding: 2px 4px;
  font: inherit;
  cursor: pointer;
}

.versionButton:hover {
  color: var(--text);
  text-decoration: underline;
}

.versionHistory section {
  margin-bottom: 22px;
}

.versionHistory h4 {
  margin: 0 0 4px;
}

.versionHistory small {
  color: var(--muted);
}

.versionHistory ul {
  margin: 10px 0 0;
  padding-left: 20px;
}

.versionHistory li {
  margin: 5px 0;
}