:root{color-scheme:dark;font-family:ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#dce2e7;background:#111519;font-synthesis:none;font-size:16px}*{box-sizing:border-box}body{margin:0}.topbar{height:76px;border-bottom:1px solid #2a3036;display:flex;align-items:center;justify-content:space-between;padding:0 32px}.brand{font-size:23px;font-weight:650;display:flex;align-items:center;gap:12px;letter-spacing:-.6px}.mark{color:#a5e8c9;font-size:32px}.eyebrow{font:12px ui-monospace,SFMono-Regular,monospace;letter-spacing:1.4px;color:#9aa8b4}.milestone{font-size:14px;color:#9aa8b4}main{display:grid;grid-template-columns:minmax(0,1fr) 300px;max-width:1520px;margin:auto;padding:28px 32px;gap:24px}.workspace{position:relative;align-self:start;border:1px solid #333b43;background:#0b0e12;min-width:0}.viewbar,.statusbar{display:flex;justify-content:space-between;gap:12px;padding:13px 16px;font-size:13px;color:#9faab5;background:#191e24}.viewbar{border-bottom:1px solid #30373e}.viewbar>span:first-child{color:#e0e7ec}.dot{display:inline-block;width:6px;height:6px;background:#a5e8c9;border-radius:50%;margin-right:8px}.canvas-surround{padding:20px;display:flex;align-items:center;justify-content:center;min-height:300px}canvas{display:block;width:100%;max-width:960px;height:auto;aspect-ratio:4/3;background:#080b10}.statusbar{border-top:1px solid #30373e;font-family:ui-monospace,SFMono-Regular,monospace;font-size:12px}progress{position:absolute;bottom:0;left:0;width:100%;height:2px;border:none;background:transparent}progress::-webkit-progress-bar{background:transparent}progress::-webkit-progress-value{background:#a5e8c9}progress::-moz-progress-bar{background:#a5e8c9}.panel{padding:0 0 24px;margin:0 0 24px;border-bottom:1px solid #30373e}.eyebrow{margin:3px 0 12px}h1{font-size:27px;font-weight:500;letter-spacing:-.7px;margin:0 0 10px}p{font-size:14px;color:#9faab5;line-height:1.6;margin:0}h2{font-size:15px;font-weight:600;margin:0 0 20px}.object-list{margin-top:24px}.object-list>div{display:flex;align-items:center;gap:9px;padding:8px 0;font-size:14px}.object-list>div>span:last-child{margin-left:auto;color:#84929e;font-size:12px}.swatch{width:18px;color:#9faab5}.jade{color:#63c9a2}.blue{color:#648ce4}.orange{color:#e3a16c}label{display:block;font-size:14px;margin:20px 0 9px;color:#b9c3cc}output{float:right;color:#a5e8c9;font-family:ui-monospace,monospace}select{width:100%;padding:10px;background:#20262d;border:1px solid #3b444f;color:#e3e9ee;border-radius:4px;font:inherit;font-size:14px}input[type=range]{width:100%;accent-color:#a5e8c9;margin:4px 0 10px}button{display:flex;justify-content:center;gap:10px;width:100%;padding:12px;margin-top:18px;border:1px solid #a5e8c9;border-radius:4px;background:#a5e8c9;color:#13271f;font:inherit;font-size:14px;font-weight:650;cursor:pointer}button:hover{background:#c1f3dc}button:disabled{opacity:.5;cursor:wait}:focus-visible{outline:2px solid #b8ebd3;outline-offset:4px}dl{margin:0}dl>div{display:flex;justify-content:space-between;gap:8px;font-size:13px;margin:12px 0}dt{color:#9faab5}dd{margin:0}.note{font-size:13px;margin-top:22px}.details{border:0;margin:0}footer{padding:0 32px 24px;max-width:1520px;margin:auto;font-size:12px;color:#7f8b96;display:flex;justify-content:space-between}@media(min-width:1300px){main{padding-top:40px}.canvas-surround{padding:28px}}@media(max-width:850px){main{grid-template-columns:1fr;padding:20px;gap:28px}aside{display:grid;grid-template-columns:1fr 1fr;gap:24px}.details{grid-column:1/-1}.topbar{padding:0 20px}.canvas-surround{padding:10px}footer{padding:0 20px 20px}}@media(max-width:520px){aside{display:block}.statusbar{flex-wrap:wrap}.topbar{height:64px}footer{display:block}footer span{display:block;margin-top:8px}.canvas-surround{min-height:0}}
.render-actions{display:flex;gap:10px}.render-actions button:first-child{flex:1.4}.render-actions button:last-child{flex:1;background:#20262d;border-color:#46524e;color:#bce8d3}.statusbar{min-height:42px}
.effect-controls{margin-top:24px;padding:14px;border:1px solid #354039;border-radius:4px}.effect-controls summary{cursor:pointer;font-size:14px;color:#bce8d3}.effect-controls .toggle{display:flex;gap:8px;align-items:center}.toggle input{accent-color:#a5e8c9}.effect-controls label{font-size:13px}
/* Milestone 8: a full-height working surface with independently scrollable controls. */
.topbar{height:58px}.topbar .brand{font-size:21px}main{max-width:none;padding:14px;grid-template-columns:minmax(0,1fr) 290px;gap:14px;height:calc(100vh - 92px)}aside{overflow:auto;padding:6px 12px 24px 2px;min-height:0}footer{max-width:none;padding:0 16px;font-size:12px;height:34px;align-items:center}.quad-workspace{--split-x:50%;--split-y:50%;display:grid;grid-template-columns:calc(var(--split-x) - 3px) 6px minmax(0,1fr);grid-template-rows:calc(var(--split-y) - 3px) 6px minmax(0,1fr);min-width:0;min-height:0;height:100%;position:relative}.viewport{border:1px solid #35404a;display:flex;flex-direction:column;min-width:0;min-height:0;background:#0c1216;overflow:hidden}.viewport[data-index="0"]{grid-area:1/1}.viewport[data-index="1"]{grid-area:1/3}.viewport[data-index="2"]{grid-area:3/1}.viewport[data-index="3"]{grid-area:3/3}.viewport.active{border-color:#9bdbbc}.pane-tools{display:flex;gap:5px;align-items:center;padding:6px;background:#1a232a;height:40px}.pane-tools select{padding:4px;font-size:12px;width:auto;min-width:0;flex:1}.pane-tools .pane-resolution{max-width:62px;flex:none}.pane-tools button{margin:0;width:auto;padding:4px 7px;font-size:12px;background:#25332f;color:#c4e8d6;border:1px solid #43584f;font-weight:500}.pane-surface{flex:1;min-height:0;min-width:0;position:relative}.pane-surface canvas{width:100%;height:100%;max-width:none;aspect-ratio:auto;touch-action:none}.pane-status{font:12px ui-monospace,monospace;padding:6px 10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-height:28px;background:#192128;color:#9aaebb}.splitter{background:#222d35;touch-action:none;z-index:2}.splitter:hover,.splitter:focus-visible{background:#749f8d}.splitter-x{grid-column:2;grid-row:1/4;cursor:col-resize}.splitter-y{grid-row:2;grid-column:1/4;cursor:row-resize}.quad-workspace.maximized{display:block}.maximized .viewport{height:100%;width:100%}.maximized .splitter{display:none}.viewport[hidden]{display:none}.object-list{max-height:180px;overflow:auto;margin-top:14px}.object-row{display:block;text-align:left;font-size:13px;margin:0;padding:7px 9px;background:transparent;border:0;color:#a9bcc7;font-weight:400}.object-row:hover,.object-row.selected{background:#293c34;color:#c5f1d7}.inspector-panel{margin-bottom:22px;font-size:14px}.inspector-panel pre{font:12px/1.5 ui-monospace,monospace;white-space:pre-wrap;max-height:230px;overflow:auto;color:#a9bcc7}#status{margin-bottom:12px;font-size:12px}.panel{padding-bottom:18px;margin-bottom:18px}@media(max-width:1000px){main{grid-template-columns:minmax(0,1fr) 250px}.pane-tools .frame-all{display:none}.pane-tools{gap:3px;padding:4px}.pane-tools button{padding:4px}.pane-resolution{display:none}}@media(max-width:750px){main{display:flex;flex-direction:column;height:auto}.quad-workspace{height:70vh;min-height:480px;flex:none}aside{display:block;overflow:visible}.pane-tools select{font-size:11px}.pane-tools .frame{display:none}footer{display:none}}
#edit-toolbar{display:flex;align-items:center;gap:6px;padding:8px 14px;border-bottom:1px solid #303d45;overflow:auto;white-space:nowrap;height:48px}#edit-toolbar button{width:auto;margin:0;padding:6px 9px;border:1px solid #40584c;background:#25332d;color:#c8e5d5;font-size:13px}#edit-toolbar button.selected{background:#9edcbc;color:#152b20}#edit-toolbar select{width:auto;padding:5px;font-size:13px}.toolbar-check{display:flex;gap:4px;margin:0;font-size:13px}.toolbar-hint{font-size:12px;color:#91a99d;margin-left:8px}#editor-error{color:#ffbe9e;font-size:13px;padding:0 14px}#editor-error:empty{display:none}main{height:calc(100vh - 140px)}#inspector label{font-size:12px;margin:10px 0 0}#inspector input:not([type=checkbox]),#inspector textarea{width:100%;min-width:0;background:#1e2930;border:1px solid #3d4e58;color:#d5e6ed;padding:6px;border-radius:3px;font:13px ui-monospace,monospace;margin-top:4px}#inspector textarea{height:100px}#inspector .triple{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:5px}#inspector p{font-size:12px;margin-top:10px}#inspector .toggle{display:flex;gap:6px;align-items:center}#inspector button{padding:7px;font-size:13px}@media(max-width:750px){main{height:auto}.toolbar-hint{display:none}}

/* Scene graph editing */
.hierarchy-row { display:flex; align-items:center; min-width:0; }
.hierarchy-row .object-row { flex:1; min-width:0; text-align:left; overflow:hidden; text-overflow:ellipsis; }
.hierarchy-row > button:not(.object-row) { padding:4px; background:transparent; border:0; }
.hierarchy-gap { height:7px; border:1px solid transparent; }
.operand-slot,.hierarchy-root-drop { display:block; font-size:11px; color:#a3bbc6; padding:6px; border:1px dashed #425565; background:#142028; text-align:left; }
.hierarchy-scope { display:flex; flex-wrap:wrap; gap:3px; padding:6px 0; }
.hierarchy-scope button { font-size:11px; padding:3px 5px; }
.drop-target { background:#245345 !important; outline:2px solid #a9f5cd; }
.object-list { max-height:300px; }
.object-list > .hierarchy-row { padding-top:0; padding-bottom:0; gap:3px; }
.hierarchy-row > button:not(.object-row) { flex:0 0 22px; width:22px; margin:0; color:#a9bcc7; font-size:13px; }
.object-list > .hierarchy-gap { display:block; padding:0; }
.hierarchy-root-drop,.operand-slot { margin-top:4px; margin-bottom:4px; width:calc(100% - 4px); font-weight:400; }
.hierarchy-scope button { width:auto; margin:0; background:#25332d; border-color:#40584c; color:#c8e5d5; }
#inspector .matrix-row { display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:4px; }

.ray-inspector { margin-bottom:22px; font-size:14px; }
.ray-inspector p { font-size:12px; margin:8px 0; }
.debug-controls { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:5px; }
.debug-controls label { font-size:11px; margin:6px 0; }
.debug-controls input { width:100%; background:#1e2930; border:1px solid #3d4e58; color:#d5e6ed; padding:5px; }
.debug-actions { display:flex; flex-wrap:wrap; gap:4px; }
.debug-actions button,.debug-hit-actions button { width:auto; margin:4px 0; padding:5px 7px; font-size:11px; background:#25332d; color:#c8e5d5; border-color:#40584c; }
.debug-filters { display:flex; flex-wrap:wrap; gap:3px 9px; }
.debug-filters label { display:flex; align-items:center; font-size:11px; margin:4px 0; }
.debug-segments { max-height:170px; overflow:auto; }
.debug-segments button { display:block; text-align:left; width:100%; margin:0; padding:5px; font-size:11px; font-weight:400; background:transparent; border:0; }
.debug-segments button.selected { background:#30443d; }
.debug-detail { font:11px/1.45 ui-monospace,monospace; max-height:250px; overflow:auto; white-space:pre-wrap; color:#b5c6d0; }

.scene-files { margin:0 0 18px; padding-bottom:14px; border-bottom:1px solid #30373e; font-size:14px; }
.scene-files label { font-size:12px; margin:10px 0 4px; }
.scene-files input { width:100%; background:#1e2930; border:1px solid #3d4e58; border-radius:3px; color:#d5e6ed; padding:7px; }
.scene-files select { font-size:12px; padding:7px; }
.file-actions { display:flex; flex-wrap:wrap; gap:5px; margin:8px 0; }
.file-actions button { width:auto; margin:0; padding:6px 8px; font-size:12px; background:#25332d; border-color:#40584c; color:#c8e5d5; }
.scene-files p { font-size:12px; margin:7px 0; }
.scene-files .file-error { color:#ffbe9e; }
.scene-files[data-dirty="true"] summary::after { content:' · unsaved'; color:#edca75; font-size:11px; }

#volume-step { width:100%; background:#1e2930; color:#d5e6ed; border:1px solid #3d4e58; padding:7px; }

/* Backend output sits below the transparent editor interaction/overlay canvas. */
.pane-surface canvas{position:absolute;inset:0;background:transparent}
.pane-surface .render-output{pointer-events:none;background:#080b10}

#shadow-budget{width:100%;background:#1e2930;border:1px solid #3d4e58;color:#d5e6ed;padding:8px;border-radius:3px;}