*{box-sizing:border-box;margin:0;padding:0}html,body,#root{width:100%;height:100%;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif}body{background:var(--color-surface-sunken);color:var(--color-text)}:root{--shell-w-project-explorer:240px;--shell-w-tool-rail:64px;--shell-w-tool-submenu:220px;--shell-w-right-panel:280px;--shell-w-tool-rail-column:calc(var(--shell-w-tool-rail) + 1px)}#root{--shell-inset-project-explorer:0px;--shell-inset-tool-rail:0px;--shell-inset-tool-submenu:0px;--shell-inset-right-panel:0px;--canvas-inset-left:calc(var(--shell-inset-project-explorer) + var(--shell-inset-tool-rail) + var(--shell-inset-tool-submenu));--canvas-inset-right:var(--shell-inset-right-panel)}#root:has(.project-explorer){--shell-inset-project-explorer:var(--shell-w-project-explorer)}#root:has(.left-side){--shell-inset-tool-rail:var(--shell-w-tool-rail-column)}#root:has(.tool-submenu-bar){--shell-inset-tool-submenu:var(--shell-w-tool-submenu)}#root:has(.right-panel){--shell-inset-right-panel:var(--shell-w-right-panel)}:root{--color-surface:#fff;--color-surface-sunken:#f5f5f5;--color-surface-raised:#f0f0f0;--color-surface-muted:#f9f9f9;--color-surface-faint:#fafafa;--color-surface-strong:#e8e8e8;--color-canvas-bg:#fafafa;--color-surface-overlay:#ffffffe6;--color-surface-overlay-soft:#ffffffd9;--color-text:#333;--color-text-dim:#555;--color-text-muted:#666;--color-text-faint:#999;--color-text-inverse:#fff;--color-icon-dimmed:#bbb;--color-ink:#000;--color-border:#ddd;--color-border-subtle:#e0e0e0;--color-border-strong:#ccc;--color-border-hint:#bbb;--color-accent:#06c;--color-accent-hover:#0053a6;--color-accent-tint:#e8f0ff;--color-accent-tint-hover:#f0f5ff;--color-accent-tint-strong:#b8d4f5;--color-accent-ring:#0066cc59;--color-danger:#d32f2f;--color-danger-ring:#d32f2f1a;--color-danger-tint:#fee;--color-danger-tint-border:#fcc;--color-danger-tint-text:#c33;--color-warning:#997404;--color-warning-tint:#fff3cd;--color-warning-tint-border:#ffe69c;--color-success:#3c3;--color-success-tint:#efe;--color-success-tint-border:#cfc;--color-info:#33c;--color-info-tint:#eef;--color-info-tint-border:#ccf;--color-shadow:#00000026;--color-shadow-strong:#0003;--color-scrim:#0006;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}:root[data-theme=dark]{--color-surface:#1e1e1e;--color-surface-sunken:#141414;--color-surface-raised:#292929;--color-surface-muted:#1c1c1c;--color-surface-faint:#181818;--color-surface-strong:#333;--color-canvas-bg:#141414;--color-surface-overlay:#1e1e1ee6;--color-surface-overlay-soft:#1e1e1ed9;--color-text:#e8e8e8;--color-text-dim:#b8b8b8;--color-text-muted:#9a9a9a;--color-text-faint:#707070;--color-text-inverse:#141414;--color-icon-dimmed:#6b6b6b;--color-ink:#f5f5f5;--color-border:#3a3a3a;--color-border-subtle:#2e2e2e;--color-border-strong:#4a4a4a;--color-border-hint:#555;--color-accent:#4da3ff;--color-accent-hover:#7ebcff;--color-accent-tint:#1a3a5c;--color-accent-tint-hover:#1f4568;--color-accent-tint-strong:#2f6690;--color-accent-ring:#4da3ff59;--color-danger:#ff6b6b;--color-danger-ring:#ff6b6b59;--color-danger-tint:#4a2020;--color-danger-tint-border:#6b2c2c;--color-danger-tint-text:#ff8f8f;--color-warning:#e3b341;--color-warning-tint:#453a12;--color-warning-tint-border:#6b5a1f;--color-success:#4ade80;--color-success-tint:#1e3a24;--color-success-tint-border:#2f5c3a;--color-info:#7c7cff;--color-info-tint:#23233f;--color-info-tint-border:#3a3a66;--color-shadow:#0006;--color-shadow-strong:#0000008c;--color-scrim:#0009;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}.app{flex-direction:column;width:100%;height:100%;display:flex}.top-bar{background:var(--color-surface);border-bottom:1px solid var(--color-border-subtle);flex-shrink:0;justify-content:space-between;align-items:center;gap:16px;height:56px;padding:8px 16px;display:flex}.top-bar-left{flex:0 auto;align-items:center;gap:12px;min-width:0;display:flex}.top-bar-center{flex:1;justify-content:center;align-items:center;gap:4px;display:flex}.top-bar-right{flex:0 auto;align-items:center;gap:4px;display:flex}.top-bar-zoom{text-align:center;min-width:50px;font-size:13px;font-weight:500}.top-tool-button.active{background:var(--color-accent-tint);border-color:var(--color-accent);color:var(--color-accent)}.top-icon-button{cursor:pointer;background:0 0;border:1px solid #0000;border-radius:4px;flex-shrink:0;justify-content:center;align-items:center;width:40px;height:40px;padding:6px;transition:all .2s;display:flex}.top-icon-button svg{width:24px;height:24px;color:var(--color-text);display:block}.top-icon-button:hover:not(:disabled){background:var(--color-surface-raised);border-color:var(--color-border)}.top-icon-button.active{background:var(--color-accent-tint);border-color:var(--color-accent)}.top-icon-button.active svg{color:var(--color-accent)}.top-icon-button:disabled{opacity:.5;cursor:not-allowed}.project-name-input{border:1px solid var(--color-border);border-radius:4px;padding:6px 8px;font-size:14px}.project-name-prefix{color:var(--color-text-muted);white-space:nowrap;flex-shrink:0;font-size:14px}.project-name-input:focus{border-color:var(--color-accent);box-shadow:0 0 0 2px var(--color-accent-ring);outline:none}.content{flex:1;display:flex;position:relative;overflow:hidden}.left-side{background:var(--color-surface-muted);border-right:1px solid var(--color-border-subtle);flex-direction:column;flex-shrink:0;display:flex;overflow-y:auto}.tool-submenu-bar{width:var(--shell-w-tool-submenu);background:var(--color-surface-muted);border-right:1px solid var(--color-border-subtle);flex-direction:column;flex-shrink:0;display:flex;overflow-y:auto}.left-toolbar{width:var(--shell-w-tool-rail);flex-direction:column;flex-shrink:0;gap:8px;padding:8px;display:flex}.tool-button{background:var(--color-surface);cursor:pointer;text-align:center;border:1px solid #0000;border-radius:4px;justify-content:center;align-items:center;width:48px;height:48px;padding:8px;font-size:12px;transition:all .2s;display:flex}.tool-button svg{flex-shrink:0;width:24px;height:24px;display:block}.tool-button:hover{background:var(--color-surface-raised);border-color:var(--color-border)}.tool-button.active{background:var(--color-accent-tint);border-color:var(--color-accent);color:var(--color-accent)}.canvas-container{background:var(--color-canvas-bg);touch-action:none;flex:1;overflow:hidden}.building-view-title-bar{z-index:10;background:var(--color-surface-overlay);border-bottom:1px solid var(--color-border-subtle);pointer-events:none;justify-content:space-between;align-items:center;padding:6px 12px;display:flex;position:absolute;top:0;left:0;right:0}.building-view-title-bar-name{color:var(--color-text);font-weight:600}.building-view-title-bar .building-view-close-button{pointer-events:auto;font-size:20px;line-height:1}.right-panel{width:var(--shell-w-right-panel);background:var(--color-surface);border-left:1px solid var(--color-border-subtle);flex-direction:column;flex-shrink:0;display:flex;overflow:hidden}.right-panel-tab{right:var(--canvas-inset-right);z-index:10;background:var(--color-surface);height:44px;color:var(--color-text-muted);border:1px solid var(--color-border-subtle);cursor:pointer;border-top:none;border-right:none;border-radius:0 0 0 8px;justify-content:center;align-items:center;padding:0;display:flex;position:absolute;top:0}.right-panel-tab svg{width:20px;height:20px}.right-panel-scroll{scrollbar-gutter:stable;flex:1;padding:0;overflow:hidden auto}.ip-panel{flex-direction:column;gap:12px;min-width:0;padding:14px 16px 16px;display:flex}.ip-panel+.ip-panel{border-top:1px solid var(--color-border-subtle)}.ip-title{color:var(--color-text);font-size:13px;font-weight:600}.ip-section{flex-direction:column;gap:10px;min-width:0;display:flex}.ip-section-title{text-transform:uppercase;letter-spacing:.06em;color:var(--color-text-muted);font-size:11px;font-weight:600}.ip-field{flex-direction:column;gap:4px;min-width:0;display:flex}.ip-field-group{flex-direction:column;gap:8px;min-width:0;display:flex}.ip-label{color:var(--color-text-muted);overflow-wrap:anywhere;font-size:12px}.ip-unit{color:inherit;font-weight:inherit;text-transform:none}.ip-row2{grid-template-columns:1fr 1fr;align-items:end;gap:10px;display:grid}.ip-input,.ip-select,.ip-textarea{border:1px solid var(--color-border);background:var(--color-surface);width:100%;min-width:0;height:30px;color:var(--color-text);font:inherit;font-variant-numeric:tabular-nums;border-radius:6px;padding:0 8px;font-size:13px;transition:border-color .15s}.ip-textarea{resize:vertical;height:auto;min-height:60px;padding:6px 8px;line-height:1.4}.ip-input:hover,.ip-select:hover,.ip-textarea:hover{border-color:var(--color-border-strong)}.ip-input::placeholder,.ip-textarea::placeholder{color:var(--color-text-dim)}.ip-input:focus-visible{border-color:var(--color-accent);box-shadow:0 0 0 3px var(--color-accent-ring);outline:none}.ip-select:focus-visible{border-color:var(--color-accent);box-shadow:0 0 0 3px var(--color-accent-ring);outline:none}.ip-textarea:focus-visible{border-color:var(--color-accent);box-shadow:0 0 0 3px var(--color-accent-ring);outline:none}.ip-color:focus-visible{border-color:var(--color-accent);box-shadow:0 0 0 3px var(--color-accent-ring);outline:none}.ip-seg-btn:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}.ip-check input:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}.ip-button:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}.ip-disclosure:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}.ip-input.error,.ip-select.error,.ip-textarea.error{border-color:var(--color-danger);box-shadow:0 0 0 2px var(--color-danger-ring)}.ip-select{-webkit-appearance:none;appearance:none;background-image:linear-gradient(45deg, transparent 50%, var(--color-text-muted) 50%), linear-gradient(135deg, var(--color-text-muted) 50%, transparent 50%);background-position:calc(100% - 16px),calc(100% - 12px);background-repeat:no-repeat;background-size:5px 5px;padding-right:28px}.ip-color{border:1px solid var(--color-border);background:var(--color-surface);cursor:pointer;border-radius:6px;width:44px;height:30px;padding:2px}.ip-color:hover{border-color:var(--color-border-strong)}.ip-seg{flex-wrap:wrap;gap:4px;display:flex}.ip-seg--presets{grid-template-columns:repeat(auto-fill,minmax(52px,1fr));display:grid}.ip-seg--options .ip-seg-btn{flex:1 1 0;min-width:max-content}.ip-seg-btn{border:1px solid var(--color-border-strong);background:var(--color-surface);min-width:44px;height:26px;color:var(--color-text);font:inherit;white-space:nowrap;cursor:pointer;border-radius:6px;justify-content:center;align-items:center;gap:4px;padding:0 10px;font-size:12px;transition:background-color .15s,border-color .15s,color .15s;display:inline-flex}.ip-seg-btn svg{width:14px;height:14px;display:block}.ip-seg-btn:hover{border-color:var(--color-accent);background:var(--color-accent-tint-hover)}.ip-seg-btn.active{background:var(--color-accent);color:var(--color-text-inverse);border-color:var(--color-accent-hover)}.ip-check{cursor:pointer;align-items:flex-start;gap:8px;font-size:13px;display:flex}.ip-check input{flex-shrink:0;margin-top:2px}.ip-readout{justify-content:space-between;align-items:center;gap:8px;min-height:24px;font-size:13px;display:flex}.ip-readout-label{color:var(--color-text-muted);flex:1;min-width:0;font-size:12px}.ip-readout-value{color:var(--color-text);font-variant-numeric:tabular-nums;text-align:right;font-weight:500}.ip-readout-value.error{color:var(--color-danger)}.ip-swatch{border:1px solid var(--color-border);border-radius:3px;flex-shrink:0;width:14px;height:14px}.ip-actions{flex-wrap:wrap;gap:8px;display:flex}.ip-button{border:1px solid var(--color-border);background:var(--color-surface);height:30px;color:var(--color-text);font:inherit;cursor:pointer;border-radius:6px;justify-content:center;align-items:center;gap:6px;padding:0 12px;font-size:13px;transition:background-color .15s,border-color .15s,color .15s;display:inline-flex}.ip-button svg{flex-shrink:0;width:16px;height:16px;display:block}.ip-button:hover{background:var(--color-surface-sunken);border-color:var(--color-border-strong)}.ip-button--danger{color:var(--color-danger);border-color:var(--color-danger-tint-border);background:var(--color-danger-tint)}.ip-button--danger:hover{background:var(--color-danger-tint-border)}.ip-button--block{width:100%}.ip-warning{background:var(--color-warning-tint);border:1px solid var(--color-warning-tint-border);color:var(--color-warning);border-radius:6px;padding:8px;font-size:12px}.ip-warning>button{margin-top:8px}.ip-disclosure{width:100%;font:inherit;text-transform:uppercase;letter-spacing:.06em;color:var(--color-text-muted);cursor:pointer;background:0 0;border:none;justify-content:space-between;align-items:center;gap:6px;padding:4px 0;font-size:11px;font-weight:600;display:flex}.ip-disclosure:after{content:"";border:1.5px solid;border-width:0 1.5px 1.5px 0;flex-shrink:0;width:6px;height:6px;transition:transform .15s;transform:rotate(-45deg)}.ip-disclosure[aria-expanded=true]:after{transform:rotate(45deg)}.panel-section{margin-bottom:16px}.panel-section-title{text-transform:uppercase;color:var(--color-text-muted);letter-spacing:.5px;margin-bottom:8px;font-size:12px;font-weight:600}.panel-row{align-items:center;gap:8px;margin-bottom:12px;display:flex}.panel-label{color:var(--color-text-muted);flex:0 0 80px;font-size:12px}.panel-value{color:var(--color-text);flex:1;font-size:13px;font-weight:500}button{border:1px solid var(--color-border);background:var(--color-surface);cursor:pointer;border-radius:4px;padding:6px 12px;font-size:13px;transition:all .2s}button:hover{background:var(--color-surface-sunken);border-color:var(--color-text-faint)}button:active{transform:scale(.98)}button:disabled{opacity:.5;cursor:not-allowed;transform:none}canvas{display:block}.toasts-container{bottom:24px;left:var(--canvas-inset-left);right:var(--canvas-inset-right);z-index:2500;pointer-events:none;flex-direction:column;align-items:center;gap:12px;padding:0 24px;display:flex;position:fixed}.toast{box-shadow:0 2px 8px var(--color-shadow);pointer-events:auto;border-radius:4px;justify-content:space-between;align-items:center;gap:12px;max-width:min(400px,100%);padding:12px 16px;font-size:14px;animation:.3s ease-out riseIn;display:flex}.toast-error{background:var(--color-danger-tint);border:1px solid var(--color-danger-tint-border);color:var(--color-danger-tint-text)}.toast-success{background:var(--color-success-tint);border:1px solid var(--color-success-tint-border);color:var(--color-success)}.toast-info{background:var(--color-info-tint);border:1px solid var(--color-info-tint-border);color:var(--color-info)}.toast-content{word-wrap:break-word;overflow-wrap:break-word;flex:1}.toast-close{cursor:pointer;width:24px;height:24px;color:inherit;background:0 0;border:none;flex-shrink:0;justify-content:center;align-items:center;padding:0;font-size:20px;line-height:1;transition:opacity .2s;display:flex}.toast-close:hover{opacity:.7}.toasts-stack{pointer-events:none;flex-direction:column;align-items:center;gap:12px;width:100%;max-height:min(420px,50vh);display:flex;overflow-y:auto}.toasts-overflow{pointer-events:auto;align-items:center;gap:8px;display:flex}.toasts-more,.toasts-close-all{box-shadow:0 2px 8px var(--color-shadow);padding:4px 10px}.panel-help-text{opacity:.7;margin-bottom:8px;font-size:11px;line-height:1.4}.chain-lock-chip{background:var(--color-surface);border:1px solid var(--color-accent);box-shadow:0 2px 8px var(--color-shadow);z-index:1000;pointer-events:none;white-space:nowrap;border-radius:4px;padding:4px 8px;font-family:monospace;font-size:13px;position:absolute}.chain-lock-chip-row+.chain-lock-chip-row{margin-top:2px}.chain-lock-chip-label{color:var(--color-text-muted);margin-right:4px}.modal-backdrop{background:var(--color-scrim);z-index:2000;justify-content:center;align-items:center;display:flex;position:fixed;top:0;bottom:0;left:0;right:0}.modal{background:var(--color-surface);border:1px solid var(--color-border-strong);width:320px;box-shadow:0 4px 16px var(--color-shadow-strong);border-radius:6px;padding:20px;font-size:14px}.modal.modal-wide{width:340px}.modal.modal-wide.modal-large{width:520px;max-width:calc(100vw - 32px);max-height:85vh;overflow-y:auto}.modal-title{margin-bottom:12px;font-size:15px;font-weight:700}.modal-label{color:var(--color-text-muted);margin-bottom:4px;font-size:12px;display:block}.modal-input{border:1px solid var(--color-border);border-radius:4px;width:100%;margin-bottom:12px;padding:6px 8px;font-size:13px}.modal-input.modal-select{background:var(--color-surface)}.modal-input:focus{border-color:var(--color-accent);box-shadow:0 0 0 2px var(--color-accent-ring);outline:none}.modal-input.error{border-color:var(--color-danger);box-shadow:0 0 0 2px var(--color-danger-ring)}.modal-checkbox-label{align-items:center;gap:6px;margin-bottom:12px;font-size:13px;display:flex}.modal-checkbox-label input{margin:0}.modal-preview{background:var(--color-surface-sunken);text-align:center;border-radius:4px;margin-bottom:12px;padding:8px;font-family:monospace;font-size:13px}.modal-warning{background:var(--color-warning-tint);border:1px solid var(--color-warning-tint-border);color:var(--color-warning);border-radius:4px;margin-bottom:12px;padding:8px;font-size:12px}.modal-buttons{justify-content:flex-end;gap:8px;display:flex}.modal-buttons.modal-buttons--center{justify-content:center}.modal-buttons button.primary{background:var(--color-accent);color:var(--color-text-inverse);border-color:var(--color-accent)}.modal-buttons button.primary:hover{background:var(--color-accent-hover);border-color:var(--color-accent-hover)}.modal-field-error{color:var(--color-danger);margin-top:-8px;margin-bottom:12px;font-size:11px}.modal.share-dialog{width:480px;max-width:calc(100vw - 32px)}.share-dialog-link-row{align-items:flex-start;gap:8px;margin-bottom:12px;display:flex}.share-dialog-link{background:var(--color-surface-sunken);border:1px solid var(--color-border);white-space:pre-wrap;overflow-wrap:anywhere;word-break:break-all;min-width:0;color:var(--color-text);-webkit-user-select:all;user-select:all;border-radius:4px;flex:1;margin:0;padding:8px;font-family:monospace;font-size:12px}.share-dialog-copy-button{flex-shrink:0;width:32px;height:32px;margin-top:0;padding:5px}.share-dialog-copy-button svg{width:18px;height:18px}.share-dialog-qr{border-radius:4px;width:160px;height:160px;margin:0 auto 12px;display:block}.furniture-tool-panel{background:var(--color-surface);flex-direction:row;gap:0;height:100%;min-height:0;display:flex}.hvac-tool-panel{flex-direction:column;gap:8px;height:100%;min-height:0;display:flex}.hvac-tool-panel>.furniture-tool-panel{flex:1;min-height:0}.furniture-category-rail{background:var(--color-surface-sunken);border-right:1px solid var(--color-border);flex-direction:column;flex-shrink:0;align-items:center;gap:4px;width:48px;padding:8px 0;display:flex;overflow-y:auto}.furniture-category-rail-button{cursor:pointer;width:40px;height:40px;color:var(--color-text-dim);background:0 0;border:1px solid #0000;border-radius:4px;flex-shrink:0;justify-content:center;align-items:center;padding:0;transition:all .2s;display:flex}.furniture-category-icon{flex-shrink:0;width:24px;height:24px}.furniture-category-rail-button:hover{background:var(--color-surface-strong);border-color:var(--color-text-faint)}.furniture-category-rail-button.active{background:var(--color-accent);color:var(--color-text-inverse);border-color:var(--color-accent-hover)}.furniture-category-content{flex-direction:column;flex:1;gap:12px;min-width:0;padding:12px;display:flex;overflow:hidden}.furniture-category-header{color:var(--color-text);border-bottom:1px solid var(--color-border);flex-shrink:0;padding-bottom:8px;font-size:13px;font-weight:600}.furniture-search{flex-shrink:0}.furniture-search-empty{color:var(--color-text-muted);font-size:12px}.furniture-item-grid{flex:1;grid-template-columns:1fr;gap:8px;display:grid;overflow-y:auto}.furniture-grid-item{border:2px solid var(--color-border);background:var(--color-surface-faint);cursor:pointer;text-align:center;border-radius:4px;flex-direction:column;align-items:center;gap:4px;padding:8px;transition:all .2s;display:flex}.furniture-grid-item:hover{background:var(--color-surface-sunken);border-color:var(--color-text-faint)}.furniture-grid-item.armed{background:var(--color-accent-tint);border-color:var(--color-accent)}.furniture-grid-item-icon{width:60px;height:60px;color:var(--color-text-muted);justify-content:center;align-items:center;display:flex}.catalog-icon-img{object-fit:fill}.furniture-grid-item-icon-img{max-width:48px;max-height:48px}.furniture-grid-item-name{color:var(--color-text);font-size:11px;font-weight:500;line-height:1.2}.furniture-grid-item-size{color:var(--color-text-muted);font-size:10px;line-height:1.2}.symbol-gallery{background:var(--color-surface);color:var(--color-ink);padding:24px}.symbol-gallery section{margin-bottom:32px}.symbol-gallery-grid{grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:12px;display:grid}.symbol-gallery-item{border:1px solid var(--color-border-strong);flex-direction:column;align-items:center;padding:8px;display:flex}.symbol-gallery-icon{justify-content:center;align-items:center;width:120px;height:120px;display:flex}.symbol-gallery-icon-img{max-width:120px;max-height:120px}.symbol-gallery-label{margin-top:4px;font-size:12px}.symbol-gallery-size{color:var(--color-text-muted);font-size:11px}.symbol-gallery-key{color:var(--color-text-muted);font-size:10px}.stair-tool-panel{background:var(--color-surface);flex-direction:column;gap:12px;padding:12px;display:flex}.stair-kind-list{flex-direction:column;gap:6px;display:flex}.stair-kind-button{border:1px solid var(--color-border);background:var(--color-surface-muted);cursor:pointer;text-align:left;border-radius:4px;align-items:center;gap:10px;padding:8px 12px;font-size:12px;transition:all .2s;display:flex}.kind-button-icon{width:40px;height:40px;color:var(--color-text-muted);flex-shrink:0;justify-content:center;align-items:center;display:flex}.stair-kind-button.active .kind-button-icon{color:var(--color-text-inverse)}.kind-button-icon svg{width:100%;height:100%;display:block}.stair-kind-button:hover{background:var(--color-surface-raised);border-color:var(--color-text-faint)}.stair-kind-button.active{background:var(--color-text);color:var(--color-text-inverse);border-color:var(--color-ink)}.stair-kind-button.disabled{background:var(--color-surface-raised);color:var(--color-text-faint);cursor:not-allowed;border-color:var(--color-border)}.stair-kind-label{font-weight:500}.top-menu{display:inline-block;position:relative}.top-menu-dropdown{background:var(--color-surface);border:1px solid var(--color-border);box-shadow:0 2px 8px var(--color-shadow);z-index:1000;border-radius:4px;min-width:120px;margin-top:2px;position:absolute;top:100%;left:0}.top-menu-dropdown--right{left:auto;right:0}.top-menu-dropdown--up{margin-top:0;margin-bottom:2px;top:auto;bottom:100%}.top-menu-item{text-align:left;cursor:pointer;background:0 0;border:none;border-radius:0;width:100%;padding:8px 12px;font-size:13px;display:block}.top-menu-item:first-child{border-top-left-radius:4px;border-top-right-radius:4px}.top-menu-item:last-child{border-bottom-right-radius:4px;border-bottom-left-radius:4px}.top-menu-item:hover{background:var(--color-surface-raised)}.top-menu-item:disabled{opacity:.5;cursor:not-allowed}.top-menu-item--active{font-weight:600}.top-menu-item--icon{align-items:center;gap:6px;display:flex}.top-menu-item--icon .story-icon{width:16px;height:16px}.top-menu-item--submenu{justify-content:space-between;align-items:center;gap:8px;display:flex}.top-menu-section-title{text-transform:uppercase;letter-spacing:.03em;color:var(--color-text-muted);padding:8px 12px 4px;font-size:11px;font-weight:600}.top-menu-divider{background:var(--color-border);border:none;height:1px;margin:4px 0}.shortcut-dialog-backdrop{background:var(--color-scrim);z-index:2000;justify-content:center;align-items:center;display:flex;position:fixed;top:0;bottom:0;left:0;right:0}.shortcut-dialog{background:var(--color-surface);border:1px solid var(--color-border-strong);width:480px;max-width:calc(100vw - 32px);max-height:80vh;box-shadow:0 4px 16px var(--color-shadow-strong);border-radius:6px;padding:20px;font-size:14px;overflow-y:auto}.shortcut-dialog-title{margin-bottom:12px;font-size:15px;font-weight:700}.shortcut-dialog-table{border-collapse:collapse;width:100%;margin-bottom:16px}.shortcut-dialog-th{text-align:left;text-transform:uppercase;letter-spacing:.5px;color:var(--color-text-muted);border-bottom:1px solid var(--color-border-subtle);padding:4px 8px;font-size:12px;font-weight:600}.shortcut-dialog-td{border-bottom:1px solid var(--color-surface-raised);vertical-align:top;padding:6px 8px;font-size:13px}.shortcut-dialog-row:last-child .shortcut-dialog-td{border-bottom:none}.shortcut-dialog-keys{white-space:nowrap;font-family:SFMono-Regular,Consolas,Liberation Mono,Menlo,monospace;font-size:12px;font-weight:600}.shortcut-dialog-context{color:var(--color-text-muted);font-size:12px}.shortcut-dialog-buttons{justify-content:flex-end;gap:8px;display:flex}.reload-prompt{bottom:24px;left:calc(var(--canvas-inset-left) + 24px);z-index:1500;background:var(--color-surface);border:1px solid var(--color-border);max-width:400px;box-shadow:0 2px 8px var(--color-shadow);border-radius:4px;justify-content:space-between;align-items:center;gap:12px;padding:12px 16px;font-size:14px;animation:.3s ease-out riseIn;display:flex;position:fixed}.reload-prompt-message{word-wrap:break-word;overflow-wrap:break-word;flex:1}.reload-prompt-buttons{flex-shrink:0;align-items:center;gap:8px;display:flex}.reload-prompt-primary{background:var(--color-accent);border-color:var(--color-accent);color:var(--color-text-inverse)}.reload-prompt-primary:hover{background:var(--color-accent-hover);border-color:var(--color-accent-hover)}.reload-prompt-close{cursor:pointer;width:24px;height:24px;color:inherit;background:0 0;border:none;justify-content:center;align-items:center;padding:0;font-size:20px;line-height:1;transition:opacity .2s;display:flex}.reload-prompt-close:hover{opacity:.7}@keyframes riseIn{0%{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}.empty-state-overlay{pointer-events:none;z-index:10;justify-content:center;align-items:center;display:flex;position:absolute;top:0;bottom:0;left:0;right:0}.empty-state-hint{background:var(--color-surface-overlay-soft);border:1px dashed var(--color-border-hint);color:var(--color-text-muted);text-align:center;border-radius:6px;max-width:80%;padding:12px 20px;font-size:15px}.project-explorer{width:var(--shell-w-project-explorer);background:var(--color-surface-muted);border-right:1px solid var(--color-border-subtle);flex-direction:column;flex-shrink:0;display:flex;overflow-y:auto}.project-explorer-actions{border-bottom:1px solid var(--color-border-subtle);flex-shrink:0;align-items:center;gap:2px;padding:4px;display:flex}.project-explorer-actions .top-icon-button{width:32px;height:32px;padding:5px}.project-explorer-actions .top-icon-button svg{width:18px;height:18px}.project-tree{flex:1;padding:4px 0;overflow-y:auto}.project-tree-row{cursor:pointer;align-items:center;gap:6px;padding:6px 8px;font-size:13px;transition:all .2s;display:flex}.project-tree-row:hover{background:var(--color-surface-raised)}.project-tree-row--project{font-weight:600}.project-tree-row--sheet,.project-tree-row--elevation-group{padding-left:28px}.project-tree-row--elevation{padding-left:50px}.project-tree-row--active{background:var(--color-accent-tint);color:var(--color-accent)}.project-tree-row--active-project{background:var(--color-surface-raised);box-shadow:inset 3px 0 0 var(--color-accent);color:var(--color-accent)}.project-tree-row--selected{outline:1px solid var(--color-accent-tint-strong);outline-offset:-1px}.project-tree-name{text-overflow:ellipsis;white-space:nowrap;flex:1;overflow:hidden}.project-tree-name-input{border:1px solid var(--color-accent);border-radius:4px;flex:1;min-width:0;padding:2px 4px;font-size:13px}.project-tree-name-input:focus{outline:none}.project-tree-chevron{width:16px;height:16px;color:var(--color-text-muted);flex-shrink:0;justify-content:center;align-items:center;transition:transform .2s;display:flex}.project-tree-chevron--open{transform:rotate(90deg)}.project-tree .top-menu{width:100%;display:block}.project-tree-add{width:100%;box-shadow:none;cursor:pointer;background:0 0;border:none;border-radius:0;justify-content:center;align-items:center;margin:0;padding:6px 8px;transition:all .2s;display:flex}.project-tree-add:hover{background:var(--color-surface-raised)}.project-tree-add-glyph{color:var(--color-text-muted);opacity:.4;font-size:13px;line-height:1;transition:all .2s}.project-tree-add:hover .project-tree-add-glyph{opacity:1}.story-icon{flex-shrink:0;justify-content:center;align-items:center;display:flex}.roof-tree-action{cursor:pointer;width:20px;height:20px;color:var(--color-text-muted);background:0 0;border:none;border-radius:4px;flex-shrink:0;justify-content:center;align-items:center;padding:0;display:flex}.roof-tree-action svg{width:14px;height:14px;display:block}.roof-tree-action:hover:not(:disabled){background:var(--color-border-subtle);color:var(--color-accent)}.roof-tree-action:disabled{opacity:.4;cursor:not-allowed}.project-tree-delete{cursor:pointer;width:20px;height:20px;color:var(--color-icon-dimmed);background:0 0;border:none;border-radius:4px;flex-shrink:0;justify-content:center;align-items:center;padding:0;display:flex}.project-tree-delete svg{width:14px;height:14px;display:block}.project-tree-delete:hover{background:var(--color-border-subtle);color:var(--color-text-muted)}.project-row-more-button,.project-row-sync-button{color:var(--color-icon-dimmed);cursor:pointer;background:0 0;border:none;border-radius:4px;flex-shrink:0;justify-content:center;align-items:center;width:20px;height:20px;padding:0;display:flex}.project-row-menu-icon svg,.project-row-more-button svg,.project-row-sync-button svg{width:14px;height:14px;display:block}.project-row-more-button:hover,.project-row-more-button[aria-expanded=true],.project-row-sync-button:hover:not(:disabled){background:var(--color-border-subtle);color:var(--color-text-muted)}.project-row-sync-button:disabled{opacity:.5;cursor:not-allowed}.project-row-menu{background:var(--color-surface);border:1px solid var(--color-border);box-shadow:0 2px 8px var(--color-shadow);z-index:1000;border-radius:4px;min-width:160px}.project-row-menu--flyout{min-width:100px}.project-row-menu-icon{flex-shrink:0;justify-content:center;align-items:center;width:16px;height:16px;display:flex}.layer-section{border-top:1px solid var(--color-border-subtle);flex-direction:column;flex-shrink:0;max-height:40%;display:flex}.layer-section-header{text-transform:uppercase;color:var(--color-text-muted);letter-spacing:.06em;flex-shrink:0;align-items:center;gap:6px;padding:8px 8px 8px 12px;font-size:11px;font-weight:600;display:flex}.layer-section-header .top-icon-button{width:22px;height:22px;padding:3px}.layer-section-header .top-icon-button svg{width:15px;height:15px}.layer-section-list{padding:0 0 4px;overflow-y:auto}.layer-row{cursor:pointer;align-items:center;gap:6px;padding:6px 8px;font-size:13px;transition:all .2s;display:flex}.layer-row:hover{background:var(--color-surface-raised)}.layer-row--active{background:var(--color-accent-tint);color:var(--color-accent)}.layer-row--hidden{color:var(--color-text-muted)}.layer-row--synthetic{cursor:default;color:var(--color-text-muted);font-style:italic}.layer-row-icon{flex-shrink:0;justify-content:center;align-items:center;display:flex}.layer-row-icon svg{width:16px;height:16px;display:block}.layer-row-name{text-overflow:ellipsis;white-space:nowrap;flex:1;overflow:hidden}.layer-row-name-input{border:1px solid var(--color-accent);min-width:0;font:inherit;border-radius:4px;flex:1;padding:2px 4px;font-size:13px}.layer-row-toggle{cursor:pointer;width:22px;height:22px;color:var(--color-icon-dimmed);background:0 0;border:none;border-radius:4px;flex-shrink:0;justify-content:center;align-items:center;padding:0;display:flex}.layer-row-toggle svg{width:15px;height:15px;display:block}.layer-row-toggle:hover{background:var(--color-border-subtle);color:var(--color-text-muted)}.layer-row-toggle--on{color:var(--color-text-muted)}.layer-row-color-input{border:1px solid var(--color-border);background:var(--color-surface);cursor:pointer;border-radius:4px;flex-shrink:0;width:20px;height:20px;padding:1px}.layer-row-color-input:focus{border-color:var(--color-accent);box-shadow:0 0 0 2px var(--color-accent-ring);outline:none}.layer-add-background-input{display:none}.touch-action-bar{background:var(--color-surface);border:1px solid var(--color-border-strong);box-shadow:0 2px 8px var(--color-shadow);z-index:10;border-radius:8px;gap:8px;padding:6px;display:flex;position:absolute;top:16px;left:50%;transform:translate(-50%)}.touch-action-bar .top-icon-button{width:48px;height:48px}@media (pointer:coarse){.project-tree-row{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none;min-height:44px}.project-tree-name{min-width:0}.top-bar{height:60px}.top-icon-button,.layer-section-header .top-icon-button,.project-explorer-actions .top-icon-button{width:44px;height:44px}.top-menu-item{min-height:44px}.furniture-category-rail-button{width:44px;height:44px}.stair-kind-button{min-height:44px}.ip-input,.ip-select,.ip-textarea{height:44px}.ip-textarea{height:auto;min-height:44px}.ip-seg-btn,.ip-button{height:44px}.ip-check{align-items:center;min-height:44px}.ip-check input{width:22px;height:22px;margin-top:0}.modal-buttons button{min-height:44px}.project-tree-delete,.roof-tree-action,.project-row-more-button,.project-row-sync-button,.layer-row-toggle{width:36px;height:44px}.project-tree-add{width:100%;height:auto;min-height:44px}.layer-row{min-height:44px}.toast-close,.reload-prompt-close{width:44px;height:44px}}