/* The builder is a workspace: the canvas, catalogue and details each own their space. */
:root {
  --workspace-ink: #263c35;
  --workspace-muted: #61716a;
  --workspace-accent: #356b53;
  --workspace-accent-soft: #e7efe6;
  --workspace-paper: #fdfdf9;
  --workspace-line: #d9e0d7;
  --workspace-shadow: 0 3px 14px #263b3010, 0 1px 2px #263b3005;
  --workspace-tray: 228px;
  --workspace-inspector: 320px;
  --muted: var(--workspace-muted);
  --line: var(--workspace-line);
  --accent: var(--workspace-accent);
  color: var(--workspace-ink);
  background: #eef0e9;
}

html { height: 100%; }
body { height: 100dvh; min-height: 0; display: flex; flex-direction: column; overflow: hidden; }
#design-view .document-bar { z-index: 12; }
#design-view .document-menu-items { max-height: calc(100dvh - 190px); overflow-y: auto; overscroll-behavior: contain; }
button, .button { color: #3d5749; border-color: #d3ddd2; border-radius: 8px; font-size: 13px; font-weight: 550; }
button:hover, .button:hover { background: #edf2e9; border-color: #a8bba7; }
button.primary, .primary { background: var(--workspace-accent); border-color: var(--workspace-accent); color: #fff; box-shadow: 0 2px 3px #274d2c12; }
button.primary:hover { background: #29563f; border-color: #29563f; }
button.quiet, .quiet { color: var(--workspace-muted); }
button:disabled { opacity: .46; }
input, select, textarea { color: var(--workspace-ink); background: #fff; border-color: #d4ded2; border-radius: 7px; font-size: 13px; }
input[type=checkbox], input[type=radio] { accent-color: var(--workspace-accent); }
button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, summary:focus-visible { outline: 3px solid #6e9e82; outline-offset: 2px; }
label { color: #53675b; font-size: 12px; }
.tiny { color: var(--workspace-muted); }
.danger { color: #a34e40; }

.topbar { flex: 0 0 48px; height: 48px; min-height: 48px; padding: 0 22px; gap: 18px; border-bottom: 1px solid var(--workspace-line); background: var(--workspace-paper); }
.topbar .brand { gap: 9px; font-size: 11px; letter-spacing: 1.55px; color: #2f5242; }
.topbar .brand > span { color: #6b9779; font-size: 28px; }
.topbar .brand small { font-size: 8px; color: #6d7e70; border-color: var(--workspace-line); }
.topbar nav { gap: 4px; margin-right: auto; margin-left: 30px; }
.topbar .nav-button { padding: 0 13px; font-size: 12px; color: #647365; }
.topbar .nav-button.active { color: #2f6449; border-bottom-color: #648f6e; }
.topbar .nav-button:hover { background: #f0f4eb; color: #2f6449; }
.topbar .hub-builder-link { color: #536e5d; font-size: 12px; }
.topbar #workspace-button { min-height: 32px; padding: 6px 11px; color: #496450; background: #f5f7ef; border-color: #d6e0d0; font-size: 12px; }
#builder-editor { flex: 1 1 auto; display: flex; flex-direction: column; min-height: 0; overflow: hidden; }
#builder-editor > .collection-view { flex: 1 1 auto; min-height: 0; height: 100%; max-height: 100%; overflow-y: auto; overscroll-behavior: contain; padding-top: 32px; padding-bottom: 48px; }
.builder-access-gate { flex: 1; min-height: 0; overflow-y: auto; }
.editor-safety-banner { flex: 0 0 auto; max-height: 24dvh; overflow-y: auto; padding: 8px 20px; font-size: 12px; }
.editor-safety-banner button { min-height: 32px; padding: 6px 10px; }
#editor-recovery-backups { max-height: 22dvh; }

#design-view { position: relative; flex: 1 1 auto; display: flex; flex-direction: column; height: 100%; min-height: 0; overflow: hidden; }
#design-view .document-bar { position: relative; inset: auto; flex: 0 0 auto; flex-direction: row; align-items: center; min-height: 76px; height: auto; width: 100%; padding: 12px 22px; gap: 18px; border: 0; border-bottom: 1px solid var(--workspace-line); border-radius: 0; background: var(--workspace-paper); box-shadow: none; backdrop-filter: none; }
#design-view .document-heading { display: grid; grid-template-columns: auto minmax(0, 1fr); grid-template-rows: auto auto; align-items: center; gap: 3px 16px; min-width: 0; padding: 0; }
#design-view .document-heading > #editor-back-rooms { grid-column: 1; grid-row: 1 / 3; align-self: center; margin: 0; padding: 8px 10px 8px 0; font-size: 12px; color: #62746a; }
#design-view .document-heading input { grid-column: 2; grid-row: 1; max-width: none; min-width: 0; padding: 0; font-size: 18px; line-height: 1.3; letter-spacing: -.45px; font-weight: 650; color: #2c483a; }
#design-view .document-heading > span { grid-column: 2; grid-row: 2; font-size: 11px; line-height: 1.3; color: #637769; }
#design-view .document-heading > span::before { width: 5px; height: 5px; background: #75a077; }
#design-view .document-actions { gap: 7px; }
#design-view .document-actions > button { min-height: 36px; padding: 8px 12px; font-size: 12px; }
#design-view .document-actions > #new-design { color: #56715b; }
#design-view .document-actions .history-actions { position: static; gap: 2px; padding: 0 8px; margin: 0; border-color: var(--workspace-line); }
#design-view .history-actions button { width: 31px; min-width: 31px; min-height: 34px; color: #58755f; }
#design-view .document-menu > summary { min-height: 36px; display: flex; align-items: center; padding: 8px 11px; color: #526a59; border-color: #d5dfd1; background: #f7f9f3; font-size: 12px; }
#design-view .document-menu-items { min-width: 220px; background: var(--workspace-paper); border-color: #cad8c8; box-shadow: 0 12px 35px #273d2e24; }
#design-view .document-menu-items button { min-height: 38px; font-size: 13px; color: #3f5948; }
#design-view .document-menu #new-design { width: 100%; height: auto; min-height: 38px; margin: 0; padding: 10px; border: 0; background: transparent; color: #3f5948; font-size: 13px; text-align: left; }
#design-view .document-menu #new-design::after { content: none; }

#design-view .designer { position: relative; flex: 1 1 auto; display: grid; grid-template-columns: minmax(0, 1fr) var(--workspace-inspector); grid-template-rows: minmax(0, 1fr) var(--workspace-tray); gap: 12px; width: 100%; height: auto; min-width: 0; min-height: 0; padding: 12px; background: #eef0e9; }
#design-view .canvas-area { position: relative; inset: auto; grid-column: 1; grid-row: 1; min-width: 0; min-height: 0; overflow: hidden; border: 1px solid #d7ded4; border-radius: 12px; background: #e9ece3; box-shadow: inset 0 1px 2px #42554105; }
#design-view .preview-wrap, #design-view .plan-wrap { inset: 0; width: 100%; height: 100%; background: #e9ece3; }
#design-view .preview-wrap canvas { width: 100%; height: 100%; }
#design-view .preview-wrap #preview-error { inset: 100px 30px 100px; padding: 24px; font-size: 13px; color: #4d6754; background: #fbfcf5f5; }
#design-view .canvas-toolbar { top: 16px; left: 16px; gap: 10px; }
#design-view .tool-rail { gap: 3px; padding: 4px; border-color: #d3ddd0; border-radius: 10px; background: #fdfdf8f5; box-shadow: var(--workspace-shadow); }
#design-view .tool-button { width: 48px; height: 53px; padding: 7px 4px; gap: 4px; font-size: 10px; color: #647a65; }
#design-view .tool-button svg { width: 20px; height: 20px; }
#design-view .tool-button.active, #design-view .tool-button[aria-pressed=true] { color: #315f41; background: #e4edde; border-color: #c3d4b9; }
#design-view .tool-state { margin-top: 0; max-width: 216px; padding: 10px 12px; border-color: #d8e1d2; border-radius: 9px; background: #fdfdf6e8; box-shadow: none; }
#design-view .tool-state strong { color: #3f6146; font-size: 12px; }
#design-view .tool-state span { color: #697c66; font-size: 11px; line-height: 1.45; }
#design-view .view-switch { top: 16px; left: auto; right: 16px; transform: none; gap: 3px; padding: 4px; border-color: #d3ddcf; border-radius: 9px; background: #fdfdf9f5; box-shadow: var(--workspace-shadow); }
#design-view .view-switch button { min-height: 31px; padding: 6px 10px; font-size: 11px; color: #60735f; }
#design-view .view-switch button.active, #design-view .view-switch button[aria-pressed=true] { color: #315e40; background: #e5edde; border-color: #c8d8be; }
#design-view .view-switch svg { width: 15px; height: 15px; }
#design-view #inspector-toggle { margin-left: 2px; border-left: 1px solid #d5dfd0; border-radius: 0 5px 5px 0; }
#design-view #inspector-toggle svg { width: 14px; height: 14px; }
#design-view #inspector-toggle[aria-expanded=true] { background: #edf2e6; color: #3c6140; }
#design-view .camera-controls { left: 16px; bottom: 46px; gap: 5px; padding: 4px; border-color: #d3ddcf; border-radius: 9px; background: #fdfdf9f5; box-shadow: var(--workspace-shadow); }
#design-view .camera-controls button { min-width: 34px; min-height: 32px; padding: 6px 9px; font-size: 11px; color: #576f5b; }
#design-view .camera-controls button[aria-pressed=true] { background: #e4edde; border-color: #bfd2b5; color: #315f41; }
#design-view .camera-zoom button { min-width: 31px; padding: 2px 7px; font-size: 21px; }
#design-view .navigation-modes { gap: 2px; }
#design-view .preview-heading { left: auto; right: 16px; bottom: 12px; gap: 10px; color: #687b63; font-size: 9px; letter-spacing: 1px; }
#design-view .preview-heading > span { display: none; }
#design-view .preview-heading button { min-height: 27px; padding: 4px 7px; font-size: 10px; color: #576e55; background: #f8faf1d9; border-color: #d6dfcd; }
#design-view .build-help { left: 16px; right: auto; bottom: 15px; width: auto; font-size: 10px; color: #63785f; }
#design-view .keyboard-help { display: flex; align-items: center; gap: 5px; margin: 0; opacity: 1; font-size: 9px; }
#design-view .keyboard-help kbd { min-width: 18px; height: 20px; padding: 0 4px; font-size: 9px; color: #5e7759; background: #f8faf2; border-color: #cbd7c2; }
#design-view .selection-actions { left: auto; right: 16px; bottom: 49px; max-width: calc(100% - 32px); transform: none; padding: 4px; border-color: #c7d6c0; border-radius: 9px; background: #fdfdf8f5; box-shadow: var(--workspace-shadow); }
#design-view .selection-actions button { min-height: 32px; padding: 6px 8px; font-size: 11px; color: #496b4e; }
#design-view .selection-actions button.danger { color: #a24e3f; }
#design-view .selection-dot { width: 5px; height: 5px; margin: 0 5px; background: #6b9c67; }
#design-view .selection-actions svg { width: 15px; height: 15px; }
#design-view .plan-controls { top: 66px; left: auto; right: 16px; transform: none; gap: 4px; padding: 4px 7px; border-color: #d1ddc9; background: #fdfdf7f2; }
#design-view .plan-controls label { font-size: 11px; }
#design-view .plan-controls select { width: 65px; font-size: 12px; color: #49634c; background: white; }
#design-view .plan-controls .icon-button { min-width: 28px; min-height: 28px; font-size: 19px; }
#design-view .plan-controls #fit-plan { font-size: 11px; }
#design-view .plan-caption { left: auto; right: 16px; bottom: 17px; gap: 10px; font-size: 9px; color: #607b59; }
#design-view .plan-caption > span:last-child { display: none; }
#design-view .canvas-empty, #design-view #build-empty { inset: 88px 50px 110px; }
#design-view .canvas-empty h3 { color: #54734c; font-size: 20px; }
#design-view .canvas-empty p { color: #6a7e61; font-size: 13px; }
#design-view .canvas-empty > span { color: #829a73; }
#design-view #build-empty button { margin-top: 16px; font-size: 13px; padding: 10px 15px; color: #365c39; background: #f5faed; border-color: #b6ccaa; }

#design-view #inspector { --inspector-heading-height: 62px; position: relative; inset: auto; grid-column: 2; grid-row: 1 / 3; z-index: 6; width: auto; min-width: 0; min-height: 0; height: 100%; max-height: none; overflow: clip; border: 1px solid var(--workspace-line); border-radius: 12px; background: var(--workspace-paper); box-shadow: var(--workspace-shadow); backdrop-filter: none; }
#design-view #inspector .inspector-panel { height: 100%; min-height: 0; }
#design-view #inspector .inspector-panel[open] { display: flex; flex-direction: column; }
#design-view #inspector .inspector-title { flex: 0 0 62px; min-height: 62px; height: 62px; padding: 12px 16px; color: #354f3c; border-bottom-color: var(--workspace-line); }
#design-view #inspector .inspector-title strong { font-size: 14px; letter-spacing: -.1px; }
#design-view #inspector .inspector-title small { font-size: 11px; color: #72806c; }
#design-view #inspector .inspector-content { position: absolute; inset: var(--inspector-heading-height) 0 0; display: flex; min-height: 0; padding: 0; overflow: hidden; }
#design-view #inspector .inspector-panel:not([open]) > .inspector-content { display: none; }
#design-view #inspector .inspector-tabs { gap: 3px; padding: 6px; background: #f5f7ef; border-color: var(--workspace-line); }
#design-view #inspector .inspector-tabs button { min-height: 35px; padding: 7px 3px; color: #61735b; font-size: 11px; }
#design-view #inspector .inspector-tabs button[aria-selected=true] { color: #315d3c; background: #e5edde; border-color: #c0d1b4; }
#design-view #inspector .inspector-section { min-height: 0; padding: 18px 17px; overflow-y: auto; color: var(--workspace-ink); scrollbar-color: #bdccb5 transparent; scrollbar-gutter: stable; }
#design-view #inspector .inspector-section h2 { margin-bottom: 4px; color: #304c38; font-size: 16px; line-height: 1.3; }
#design-view #inspector .inspector-section h3 { margin-top: 18px; margin-bottom: 10px; color: #405e44; font-size: 13px; }
#design-view #inspector .inspector-section-heading { margin-bottom: 15px; }
#design-view #inspector .inspector-section-heading p, #design-view #inspector .inspector-description, #design-view #inspector .tiny { margin-bottom: 14px; color: #6a7862; font-size: 12px; line-height: 1.55; }
#design-view #inspector .inspector-section-heading p { margin-bottom: 0; }
#design-view #inspector label { margin-bottom: 13px; color: #53694d; font-size: 12px; }
#design-view #inspector input:not([type=checkbox]):not([type=range]), #design-view #inspector select { min-height: 38px; padding: 8px 10px; margin-top: 5px; color: #2c4935; border-color: #d2dec9; background: #fcfdf7; font-size: 13px; }
#design-view #inspector button { min-height: 36px; font-size: 12px; }
#design-view #inspector summary:not(.inspector-title) { color: #486340; font-size: 13px; }
#design-view #inspector .small-callout { color: #5e7352; background: #f0f5e7; border-color: #d9e4ce; font-size: 12px; }
#design-view #inspector .piece-dimensions input[type=number] { min-height: 36px; padding: 7px; }
#design-view #inspector .selection-heading { color: #385c3b; font-size: 14px; }
#design-view #inspector #all-pieces { max-height: none; }
#design-view #inspector #all-pieces button { padding: 10px; border-color: #e2e8d9; border-radius: 7px; color: #4c6842; background: #f4f7ed; }
#design-view #inspector #all-pieces button[aria-pressed=true] { color: #315832; background: #e5efda; border-color: #9fb98c; }
#design-view #inspector #all-pieces small { color: #788a6a; }
#design-view #inspector .inspector-close { display: none; }
#design-view #inspector .model-budget-metric { font-size: 11px; color: #536d49; }
#design-view #inspector .model-budget-value { color: #3f5c39; }

#design-view .designer > .library { position: relative; inset: auto; grid-column: 1; grid-row: 2; z-index: 5; display: flex; flex-direction: column; min-width: 0; min-height: 0; height: auto; max-height: none; overflow: hidden; padding: 11px 15px 10px; border: 1px solid var(--workspace-line); border-radius: 12px; background: var(--workspace-paper); box-shadow: var(--workspace-shadow); backdrop-filter: none; }
#design-view .designer > .library .catalog-heading { position: static; inset: auto; flex: 0 0 auto; display: grid; grid-template-columns: auto minmax(110px, 1fr) auto auto; gap: 10px 18px; align-items: center; min-height: 36px; height: auto; margin: 0 0 8px; background: transparent; }
#design-view .catalog-title { grid-column: 1; grid-row: 1; gap: 10px; }
#design-view .catalog-title h2 { color: #3d5c43; font-size: 15px; font-weight: 650; letter-spacing: -.25px; }
#design-view .catalog-title > span { padding: 3px 6px; color: #728564; border-color: #dde6d3; background: #f0f4e9; font-size: 10px; }
#design-view .designer > .library .catalog-heading .catalog-search { grid-column: 2; grid-row: 1; order: 0; min-width: 0; max-width: 340px; margin: 0; }
#design-view .catalog-search input { min-height: 33px; margin: 0; padding: 7px 10px; color: #334e3b; background: #f7f9f2; border-color: #d4dfcc; font-size: 12px; }
#design-view .catalog-search input::placeholder { color: #7a8a70; opacity: 1; }
#design-view .designer > .library .catalog-heading .tab-strip { grid-column: 3; grid-row: 1; order: 0; display: flex; gap: 4px; min-width: 0; height: 34px; margin: 0; padding: 3px; border-radius: 7px; background: #f0f3e9; }
#design-view .tab-strip button { flex: 0 0 auto; min-height: 28px; padding: 5px 9px; color: #6c7f60; border: 1px solid transparent; border-radius: 5px; font-size: 11px; white-space: nowrap; }
#design-view .tab-strip button.active { color: #365c3b; border-color: #d5e0ca; background: #fffef9; box-shadow: 0 1px 2px #394e2a08; }
#design-view #catalogue-toggle { grid-column: 4; grid-row: 1; order: 0; min-width: 32px; min-height: 32px; padding: 5px 8px; color: #638052; border-color: #d7e1cc; background: #f7f9f1; font-size: 11px; white-space: nowrap; }
#design-view #catalogue-toggle svg { width: 14px; height: 14px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
#design-view #catalogue-toggle[aria-expanded=false] svg { transform: rotate(180deg); }
#design-view #catalogue-content { flex: 1 1 auto; display: flex; flex-direction: column; min-width: 0; min-height: 0; overflow: hidden; }
#design-view #catalogue-content > div { min-width: 0; min-height: 0; }
#design-view #pieces-library { display: flex; flex: 1 1 auto; flex-direction: column; overflow: hidden; }
#design-view .catalog-categories { flex: 0 0 auto; min-height: 31px; gap: 3px; margin: 0 0 8px; }
#design-view .catalog-categories button { min-height: 28px; padding: 5px 11px; color: #6e815f; font-size: 11px; }
#design-view .catalog-categories button.active { color: #365d35; background: #e7efdb; border-color: #d0dfbf; }
#design-view .piece-tools { flex: 1 1 auto; min-height: 0; align-items: stretch; gap: 9px; padding: 2px 1px 7px; overflow-y: auto; scrollbar-color: #bacdad #f5f8ef; overscroll-behavior: contain; }
#design-view .piece-tools button { flex: 0 0 104px; min-height: 90px; height: 100%; max-height: 116px; gap: 4px; padding: 7px 6px; color: #557247; background: #f5f8ed; border-color: #e0e8d5; border-radius: 9px; }
#design-view .piece-tools button:hover { background: #edf4e1; border-color: #afc49b; }
#design-view .piece-tools button.active { color: #355d33; background: #e8f0dd; border-color: #8fae76; box-shadow: 0 0 0 1px #8fae76; }
#design-view .piece-tools .piece-thumbnail { width: 75px; height: 66px; flex: 1 1 55px; min-height: 45px; max-height: 70px; }
#design-view .piece-tools button .tool-caption, #design-view .piece-tools button .piece-caption { flex: 0 0 auto; min-height: 26px; font-size: 11px; line-height: 1.2; }
#design-view .catalog-empty { color: #657c57; font-size: 13px; padding: 14px 4px; }
#design-view #surfaces-library { flex: 1 1 auto; overflow-y: auto; overscroll-behavior: contain; }
#design-view .material-list { gap: 10px; padding: 4px 1px 9px; }
#design-view .material-card { flex-basis: 155px; min-height: 86px; background: #f5f8ed; border-color: #dce6ce; }
#design-view .material-card span:nth-child(2) { font-size: 12px; color: #527044; }
#design-view .material-card small { font-size: 10px; color: #7a8d69; }
#design-view .material-card.active { background: #e9f1dc; border-color: #99b580; }
#design-view .surface-actions { padding-top: 4px; flex-wrap: wrap; }
#design-view .surface-actions button { min-height: 32px; padding: 6px 10px; font-size: 11px; }
#design-view #models-library, #design-view #shared-models-library { flex: 1 1 auto; overflow-y: auto; overscroll-behavior: contain; scrollbar-width: thin; scrollbar-color: #bbccae transparent; }
#design-view .model-library { padding: 4px 2px 12px; color: #3f5d3d; }
#design-view .model-library-heading { margin-bottom: 10px; gap: 12px; }
#design-view .model-library-heading h3 { color: #43643d; font-size: 14px; }
#design-view .model-library-heading p, #design-view .model-library-help, #design-view .model-library-empty { color: #65795a; font-size: 12px; }
#design-view .model-drop-zone { padding: 11px; background: #f4f8eb; border-color: #b8cba5; }
#design-view .model-drop-zone button, #design-view .model-drop-zone .button { min-height: 35px; font-size: 12px; }
#design-view .model-card { flex-basis: 215px; background: #f6f9ef; border-color: #d7e3cb; }
#design-view .model-card-thumbnail { height: 100px; background: #eaf0de; }
#design-view .model-card h4 { color: #46643d; font-size: 13px; }
#design-view .model-card-actions button { min-height: 33px; font-size: 11px; }
#design-view .shared-model-filters input, #design-view .shared-model-filters select { min-height: 36px; font-size: 13px; }
#design-view .shared-model-filters > button { min-height: 36px; font-size: 12px; }

#design-view.inspector-collapsed .designer { grid-template-columns: minmax(0, 1fr); }
#design-view.inspector-collapsed #inspector { display: none; }
#design-view.inspector-collapsed #inspector .inspector-title { min-height: 48px; height: 48px; padding: 9px 13px; }
#design-view.inspector-collapsed #inspector .inspector-title strong { font-size: 12px; }
#design-view.inspector-collapsed #inspector .inspector-title small { display: none; }
#design-view.catalogue-collapsed .designer { grid-template-rows: minmax(0, 1fr) auto; }
#design-view.catalogue-collapsed .designer > .library { padding-top: 9px; padding-bottom: 9px; }
#design-view.catalogue-collapsed .library .catalog-heading { margin-bottom: 0; }
#design-view.catalogue-collapsed .catalog-search { visibility: hidden; }

.free-camera-mode #design-view .designer { grid-template-columns: minmax(0, 1fr); grid-template-rows: minmax(0, 1fr); }
.free-camera-mode #design-view .canvas-area { grid-column: 1; grid-row: 1; }
.free-camera-mode #design-view .camera-controls { bottom: 50px; }
.free-camera-mode #design-view .free-camera-help { left: 16px; right: 16px; bottom: 10px; padding: 7px 10px; color: #496346; background: #fdfdf6f0; border-color: #d2dec8; font-size: 11px; }
.free-camera-mode #design-view .preview-heading { left: auto; right: 16px; bottom: 52px; }
.free-camera-mode #design-view .view-switch { display: none; }
.plan-mode #design-view .camera-controls { bottom: 46px; }
.plan-mode #design-view .selection-actions { bottom: 48px; }

@media (max-width: 1400px) {
  #design-view .tool-state { display: none; }
  #design-view .designer > .library .catalog-heading { gap: 10px; }
  #design-view .catalog-title > span { display: none; }
  #design-view .catalog-search { max-width: 260px; }
  #design-view .tab-strip button { padding-left: 8px; padding-right: 8px; }
  #design-view .selection-actions { bottom: 96px; }
}

@media (max-width: 1150px) {
  :root { --workspace-inspector: 292px; }
  .topbar { gap: 12px; padding-left: 16px; padding-right: 16px; }
  .topbar nav { margin-left: 10px; }
  #design-view .document-bar { min-height: 88px; padding: 10px 16px; gap: 8px; }
  #design-view .document-heading { grid-template-columns: minmax(0, 1fr); gap: 2px; }
  #design-view .document-heading > #editor-back-rooms { grid-column: 1; grid-row: 1; justify-self: start; min-height: 20px; padding: 0; font-size: 10px; }
  #design-view .document-heading input { grid-column: 1; grid-row: 2; font-size: 17px; }
  #design-view .document-heading > span { grid-column: 1; grid-row: 3; font-size: 10px; }
  #design-view .document-actions { gap: 5px; }
  #design-view .document-actions > button { padding-left: 9px; padding-right: 9px; font-size: 11px; }
  #design-view .document-actions .history-actions { padding-left: 4px; padding-right: 4px; }
  #design-view .document-menu > summary { padding-left: 9px; padding-right: 9px; font-size: 11px; }
  #design-view .designer > .library .catalog-heading { grid-template-columns: 1fr auto auto; gap: 6px 10px; }
  #design-view .designer > .library .catalog-heading .catalog-search { grid-column: 1 / -1; grid-row: 2; max-width: none; }
  #design-view .designer > .library .catalog-heading .tab-strip { grid-column: 2; grid-row: 1; gap: 1px; }
  #design-view #catalogue-toggle { grid-column: 3; grid-row: 1; }
  #design-view .catalog-title h2 { font-size: 13px; }
  #design-view .tab-strip button { padding: 5px 6px; font-size: 10px; }
  #design-view .piece-tools button { flex-basis: 92px; min-height: 76px; padding: 5px; }
  #design-view .piece-tools .piece-thumbnail { width: 64px; min-height: 35px; }
  #design-view .piece-tools button .tool-caption, #design-view .piece-tools button .piece-caption { min-height: 23px; font-size: 10px; }
  #design-view .catalog-categories { margin-bottom: 5px; min-height: 27px; }
  #design-view .catalog-categories button { min-height: 25px; padding: 4px 8px; font-size: 10px; }
  #design-view.catalogue-collapsed .catalog-search { display: none; }
}

@media (max-height: 720px) and (min-width: 761px) {
  :root { --workspace-tray: 192px; }
  .topbar { flex-basis: 44px; min-height: 44px; height: 44px; }
  #design-view .document-bar { min-height: 68px; padding-top: 8px; padding-bottom: 8px; }
  #design-view .designer { gap: 9px; padding: 9px; }
  #design-view .designer > .library { padding: 8px 12px 7px; }
  #design-view .designer > .library .catalog-heading { min-height: 32px; margin-bottom: 5px; }
  #design-view .catalog-search input { min-height: 30px; padding-top: 5px; padding-bottom: 5px; }
  #design-view .catalog-categories { min-height: 25px; margin-bottom: 5px; }
  #design-view .catalog-categories button { min-height: 24px; padding-top: 3px; padding-bottom: 3px; }
  #design-view .piece-tools button { min-height: 70px; padding: 4px; gap: 2px; }
  #design-view .piece-tools .piece-thumbnail { min-height: 32px; max-height: 51px; }
  #design-view .piece-tools button .tool-caption, #design-view .piece-tools button .piece-caption { min-height: 22px; font-size: 10px; }
  #design-view #inspector { --inspector-heading-height: 53px; }
  #design-view #inspector .inspector-title { flex-basis: 53px; min-height: 53px; height: 53px; padding-top: 9px; padding-bottom: 9px; }
  #design-view #inspector .inspector-section { padding-top: 14px; }
  #design-view .canvas-toolbar { top: 12px; left: 12px; }
  #design-view .tool-button { width: 43px; height: 46px; font-size: 9px; gap: 3px; }
  #design-view .view-switch { top: 12px; right: 12px; }
  #design-view .camera-controls { left: 12px; bottom: 38px; }
  #design-view .camera-controls button { min-height: 29px; min-width: 29px; padding: 5px 7px; font-size: 10px; }
  #design-view .camera-zoom button { font-size: 18px; }
  #design-view .preview-heading { right: 12px; bottom: 8px; }
  #design-view .build-help { left: 12px; bottom: 11px; }
  #design-view .selection-actions { right: 12px; bottom: 83px; }
  #design-view .plan-controls { top: 60px; right: 12px; }
  #design-view .canvas-empty, #design-view #build-empty { inset: 58px 70px 82px; }
  #design-view .canvas-empty > span { font-size: 30px; margin-bottom: 7px; }
  #design-view .canvas-empty h3 { font-size: 16px; margin-bottom: 5px; }
  #design-view .canvas-empty p { font-size: 11px; }
  #design-view #build-empty button { margin-top: 10px; padding: 7px 10px; }
}

@media (max-width: 1150px) and (max-height: 720px) and (min-width: 761px) {
  :root { --workspace-tray: 208px; }
}

@media (max-width: 760px) {
  :root { --workspace-tray: 250px; }
  .topbar { flex-basis: 46px; min-height: 46px; height: 46px; padding: 0 12px; gap: 7px; }
  .topbar .brand { font-size: 10px; letter-spacing: 1px; gap: 6px; }
  .topbar .brand > span { font-size: 25px; }
  .topbar .brand small { display: none; }
  .topbar nav { gap: 0; margin: 0 auto; }
  .topbar .nav-button { padding: 0 8px; font-size: 11px; }
  .topbar .hub-builder-link { display: none; }
  .topbar #workspace-button { min-width: 63px; min-height: 30px; height: auto; width: auto; padding: 5px 9px; font-size: 11px; }
  .topbar #workspace-button::after { content: none; }
  #design-view .document-bar { min-height: 104px; flex-wrap: wrap; padding: 8px 12px; gap: 6px; }
  #design-view .document-heading { flex: 1 1 100%; grid-template-columns: auto minmax(0, 1fr); grid-template-rows: auto auto; column-gap: 12px; row-gap: 2px; padding-right: 0; }
  #design-view .document-heading > #editor-back-rooms { grid-column: 1; grid-row: 1 / 3; justify-self: start; font-size: 10px; padding-right: 10px; }
  #design-view .document-heading input { grid-column: 2; grid-row: 1; font-size: 16px; }
  #design-view .document-heading > span { grid-column: 2; grid-row: 2; font-size: 10px; }
  #design-view .document-actions { flex: 1 1 100%; flex-wrap: wrap; justify-content: flex-end; gap: 5px; }
  #design-view .document-actions > button, #design-view .document-menu > summary { min-height: 32px; padding: 6px 9px; font-size: 11px; }
  #design-view .document-actions > #new-design { margin-right: auto; min-width: 0; padding: 6px 8px; font-size: 11px; }
  #design-view .document-actions > #new-design::after { content: none; }
  #design-view .document-actions .history-actions { gap: 0; padding: 0 4px; border-left: 0; }
  #design-view .history-actions button { min-width: 27px; width: 27px; min-height: 30px; font-size: 19px; }
  #design-view .designer { grid-template-columns: minmax(0, 1fr); grid-template-rows: minmax(0, 1fr) var(--workspace-tray); gap: 8px; padding: 8px; }
  #design-view .canvas-area { border-radius: 10px; }
  #design-view .canvas-toolbar { top: 10px; left: 10px; }
  #design-view .tool-rail { flex-direction: row; gap: 2px; padding: 3px; }
  #design-view .tool-button { width: 42px; height: 42px; min-height: 42px; padding: 5px 3px; gap: 2px; font-size: 9px; }
  #design-view .tool-button svg { width: 17px; height: 17px; }
  #design-view .view-switch { top: 10px; right: 10px; padding: 3px; gap: 1px; }
  #design-view .view-switch button { min-height: 30px; padding: 5px 7px; font-size: 10px; }
  #design-view .view-switch svg { width: 13px; height: 13px; }
  #design-view #inspector { --inspector-heading-height: 58px; position: absolute; grid-column: auto; grid-row: auto; inset: 8px; z-index: 9; width: auto; height: auto; max-height: none; border-color: #bbcdb3; background: #fdfdf9; border-radius: 11px; box-shadow: 0 14px 60px #253c2b40; }
  #design-view #inspector .inspector-title { min-height: 58px; height: 58px; flex-basis: 58px; padding: 10px 16px; }
  #design-view #inspector .inspector-title strong { font-size: 14px; }
  #design-view #inspector .inspector-title small { display: block; font-size: 11px; }
  #design-view #inspector .inspector-tabs button { min-height: 38px; font-size: 12px; }
  #design-view #inspector .inspector-section { padding: 16px 18px; }
  #design-view #inspector input:not([type=checkbox]):not([type=range]), #design-view #inspector select, #design-view #inspector #piece-name-field input { min-height: 40px; font-size: 16px; }
  #design-view #inspector .inspector-close { display: block; flex: 0 0 auto; min-height: 40px; margin: 8px 14px 12px; color: #365c35; background: #e6efdc; border-color: #b8cfa7; font-size: 13px; }
  #design-view.inspector-collapsed #inspector { inset: auto; top: 69px; right: 18px; width: 145px; height: auto; border-color: #d3decc; box-shadow: var(--workspace-shadow); }
  #design-view.inspector-collapsed #inspector .inspector-title { min-height: 37px; height: 37px; padding: 7px 10px; }
  #design-view.inspector-collapsed #inspector .inspector-title strong { font-size: 11px; }
  #design-view.inspector-collapsed #inspector .inspector-title small { display: none; }
  #design-view .camera-controls { left: 10px; bottom: 11px; padding: 3px; gap: 3px; max-width: calc(100% - 20px); }
  #design-view .camera-controls button { min-width: 30px; min-height: 32px; padding: 6px 7px; font-size: 10px; }
  #design-view .camera-controls #camera-free { font-size: 0; }
  #design-view .camera-controls #camera-free::after { content: "Free"; font-size: 10px; }
  #design-view .camera-zoom button { min-width: 28px; font-size: 20px; padding: 1px 6px; }
  #design-view .preview-heading { right: 10px; left: auto; bottom: 55px; }
  #design-view .preview-heading button { min-height: 26px; padding: 4px 6px; font-size: 9px; }
  #design-view .build-help { display: none; }
  #design-view .selection-actions { left: 10px; right: auto; bottom: 57px; max-width: calc(100% - 20px); padding: 3px; gap: 0; }
  #design-view .selection-actions button { min-height: 31px; padding: 6px 8px; font-size: 10px; }
  #design-view .canvas-area:has(#selection-actions:not([hidden])) .preview-heading { display: none; }
  #design-view .plan-controls { top: 64px; right: auto; left: 10px; padding: 3px 5px; }
  #design-view .plan-controls label { padding-right: 3px; font-size: 10px; }
  #design-view .plan-controls select { width: 56px; font-size: 11px; }
  #design-view .plan-controls #fit-plan { font-size: 10px; }
  #design-view .plan-caption { display: none; }
  #design-view .canvas-empty, #design-view #build-empty { inset: 80px 26px 105px; }
  #design-view .canvas-empty h3 { font-size: 18px; }
  #design-view .canvas-empty p { font-size: 12px; }
  #design-view .preview-wrap #preview-error { inset: 110px 15px 70px; padding: 15px; font-size: 12px; }
  #design-view .designer > .library { padding: 9px 11px 8px; border-radius: 10px; }
  #design-view .designer > .library .catalog-heading { grid-template-columns: auto minmax(0, 1fr) auto; gap: 7px 9px; min-height: 32px; margin-bottom: 7px; }
  #design-view .catalog-title { gap: 5px; }
  #design-view .catalog-title h2 { font-size: 13px; }
  #design-view .designer > .library .catalog-heading .catalog-search { grid-column: 2; grid-row: 1; max-width: none; }
  #design-view .catalog-search input { min-height: 32px; padding: 5px 8px; font-size: 16px; }
  #design-view .designer > .library .catalog-heading .tab-strip { grid-column: 1 / -1; grid-row: 2; justify-content: space-between; gap: 3px; height: 32px; }
  #design-view .tab-strip button { flex: 1 1 auto; min-height: 26px; padding: 4px 7px; font-size: 11px; }
  #design-view #catalogue-toggle { grid-column: 3; grid-row: 1; min-width: 30px; min-height: 30px; }
  #design-view #catalogue-toggle [data-workspace-label] { font-size: 0; }
  #design-view #catalogue-toggle [data-workspace-label]::after { content: "Hide"; font-size: 11px; }
  #design-view #catalogue-toggle[aria-expanded=false] [data-workspace-label]::after { content: "Show"; }
  #design-view .catalog-categories { min-height: 29px; margin-bottom: 7px; gap: 2px; }
  #design-view .catalog-categories button { min-height: 28px; padding: 5px 8px; font-size: 11px; }
  #design-view .piece-tools { gap: 8px; padding-bottom: 7px; }
  #design-view .piece-tools button { flex-basis: 88px; min-height: 86px; padding: 5px; gap: 3px; }
  #design-view .piece-tools .piece-thumbnail { width: 63px; min-height: 40px; max-height: 64px; }
  #design-view .piece-tools button .tool-caption, #design-view .piece-tools button .piece-caption { min-height: 26px; font-size: 11px; }
  #design-view.catalogue-collapsed .catalog-search { display: block; visibility: hidden; }
  #design-view.catalogue-collapsed .designer > .library { padding-top: 8px; padding-bottom: 8px; }
  #design-view .model-library-heading { display: block; }
  #design-view .model-library-heading p { margin-top: 5px; }
  #design-view .model-drop-zone { gap: 8px; padding: 10px; }
  #design-view .model-drop-zone label { min-width: 120px; }
  #design-view .model-drop-zone input { font-size: 16px; }
  #design-view .model-card { flex-basis: 195px; }
  #design-view .material-card { flex-basis: 143px; min-height: 82px; }
  #design-view .surface-actions { gap: 6px; }
  #design-view .surface-actions button { min-height: 33px; font-size: 11px; }
  .free-camera-mode #design-view .camera-controls { bottom: 56px; }
  .free-camera-mode #design-view .preview-heading { bottom: 99px; right: 10px; }
  .free-camera-mode #design-view .free-camera-help { left: 10px; right: 10px; bottom: 10px; padding: 6px 8px; font-size: 10px; }
  .plan-mode #design-view .camera-controls { bottom: 11px; }
  .plan-mode #design-view .selection-actions { bottom: 57px; }
  .editor-safety-banner { padding: 8px 12px; gap: 7px; }
}

@media (max-width: 500px) {
  .topbar .brand { font-size: 0; gap: 0; }
  .topbar .brand > span { font-size: 25px; }
  .topbar nav { margin-left: 0; margin-right: auto; }
  #design-view .document-actions { gap: 4px; }
  #design-view .document-actions > button { padding-left: 7px; padding-right: 7px; font-size: 10px; }
  #design-view .document-actions > #new-design { font-size: 0; padding: 5px; }
  #design-view .document-actions > #new-design::after { content: "+ New"; font-size: 10px; }
  #design-view .document-actions .history-actions { padding: 0 3px; }
  #design-view .history-actions button { min-width: 24px; width: 24px; }
  #design-view .document-menu > summary { padding-left: 7px; padding-right: 7px; font-size: 10px; }
  #design-view .document-heading { column-gap: 10px; }
  #design-view .document-heading > #editor-back-rooms { padding-right: 0; font-size: 10px; }
  #design-view .preview-heading { bottom: 58px; }
  #design-view .selection-actions button { padding-left: 7px; padding-right: 7px; }
  #design-view #inspector-toggle [data-workspace-label] { font-size: 0; }
  #design-view #inspector-toggle [data-workspace-label]::after { content: "Details"; font-size: 10px; }
}

@media (max-height: 660px) and (max-width: 760px) {
  :root { --workspace-tray: 214px; }
  .topbar { flex-basis: 40px; min-height: 40px; height: 40px; }
  #design-view .document-bar { min-height: 94px; padding-top: 6px; padding-bottom: 6px; }
  #design-view .designer { padding: 6px; gap: 6px; }
  #design-view .designer > .library { padding-top: 7px; padding-bottom: 5px; }
  #design-view .designer > .library .catalog-heading { gap: 5px 7px; margin-bottom: 5px; }
  #design-view .catalog-categories { min-height: 25px; margin-bottom: 4px; }
  #design-view .catalog-categories button { min-height: 24px; padding-top: 3px; padding-bottom: 3px; font-size: 10px; }
  #design-view .piece-tools button { min-height: 69px; gap: 1px; padding-top: 3px; padding-bottom: 3px; }
  #design-view .piece-tools .piece-thumbnail { min-height: 29px; max-height: 43px; }
  #design-view .piece-tools button .piece-caption, #design-view .piece-tools button .tool-caption { min-height: 22px; font-size: 10px; }
  #design-view .preview-heading { display: none; }
  #design-view .canvas-toolbar { top: 8px; left: 8px; }
  #design-view .tool-rail { flex-direction: row; }
  #design-view .view-switch { top: 8px; right: 8px; }
  #design-view .camera-controls { left: 8px; bottom: 8px; }
  #design-view .camera-controls button { min-height: 28px; }
  #design-view .selection-actions { bottom: 49px; }
  #design-view .canvas-empty, #design-view #build-empty { inset: 60px 24px 60px; }
  #design-view .canvas-empty > span, #design-view .canvas-empty p { display: none; }
  #design-view .canvas-empty h3 { font-size: 14px; margin-bottom: 0; }
  #design-view #build-empty button { margin-top: 8px; padding: 6px 10px; }
}

@media (prefers-reduced-motion: reduce) {
  #design-view *, #design-view *::before, #design-view *::after { transition-duration: 0s !important; scroll-behavior: auto !important; }
}

/* Optional object capabilities stay easy to find without crowding the essentials. */
#design-view #inspector .object-capability,
#design-view #inspector .more-options {
  min-width: 0;
  margin: 9px 0;
  padding: 0;
  overflow: hidden;
  border: 1px solid #dbe4d3;
  border-radius: 8px;
  background: #f7f9f1;
}
#design-view #inspector .object-capability:has(> fieldset[hidden]) { display: none; }
#design-view #inspector .object-capability > summary,
#design-view #inspector .more-options > summary {
  display: flex;
  align-items: center;
  gap: 9px;
  min-height: 42px;
  margin: 0;
  padding: 10px 12px;
  list-style: none;
  color: #415e3e;
  font-size: 12px;
  font-weight: 600;
  line-height: 1.4;
}
#design-view #inspector .object-capability > summary::-webkit-details-marker,
#design-view #inspector .more-options > summary::-webkit-details-marker { display: none; }
#design-view #inspector .object-capability > summary:hover,
#design-view #inspector .more-options > summary:hover { background: #edf3e5; }
#design-view #inspector .object-capability > summary::before,
#design-view #inspector .more-options > summary::before {
  content: "";
  flex: 0 0 6px;
  width: 6px;
  height: 6px;
  margin-right: 2px;
  border-right: 1.5px solid #7c9270;
  border-bottom: 1.5px solid #7c9270;
  transform: rotate(-45deg);
}
#design-view #inspector .object-capability[open] > summary::before,
#design-view #inspector .more-options[open] > summary::before { transform: translateY(-2px) rotate(45deg); }
#design-view #inspector .object-capability > summary::after {
  content: "Off";
  margin-left: auto;
  padding: 2px 7px;
  border: 1px solid #dce5d0;
  border-radius: 5px;
  color: #738267;
  background: #edf2e6;
  font-size: 10px;
  font-weight: 550;
  line-height: 1.4;
}
#design-view #inspector #piece-physics-panel:has(#piece-physics-enabled:checked) > summary::after,
#design-view #inspector #piece-display-panel:has(#piece-display-enabled:checked) > summary::after {
  content: "On";
  color: #3d6837;
  border-color: #bdd2aa;
  background: #e6efd9;
}
#design-view #inspector #piece-scripting-panel > summary::after { content: "None"; }
#design-view #inspector #piece-scripting-panel:has(#piece-script-remove:not([hidden])) > summary::after {
  content: "Attached";
  color: #3d6837;
  border-color: #bdd2aa;
  background: #e6efd9;
}
#design-view #inspector .object-capability[open],
#design-view #inspector .more-options[open] { background: #fdfdf9; }
#design-view #inspector .object-capability[open] > summary { margin-bottom: 11px; border-bottom: 1px solid #e3eadb; }
#design-view #inspector .object-capability > fieldset { min-width: 0; margin: 0; padding: 0 12px 12px; border: 0; border-radius: 0; }
#design-view #inspector .object-capability > fieldset > legend { display: none; }
#design-view #inspector .object-capability > fieldset > label:first-of-type { margin-top: 0; }
#design-view #inspector .object-capability .small-callout { font-size: 11px; line-height: 1.55; }
#design-view #inspector .more-options[open] { padding: 0 12px 12px; }
#design-view #inspector .more-options[open] > summary { margin: 0 -12px 12px; border-bottom: 1px solid #e3eadb; }
#design-view #inspector .more-options .property-actions { margin-top: 9px; }