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.2s;display:flex;align-items:center;gap:10px}.kind-button-icon{width:40px;height:40px;flex-shrink:0;display:flex;align-items:center;justify-content:center;color:var(--color-text-muted)}.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}.grauton-picker{display:flex;flex-direction:column;gap:6px;width:100%}.grauton-picker input[type=range]{width:100%;cursor:pointer}.grauton-swatches{display:flex;gap:4px;flex-wrap:wrap}.grauton-swatch{width:20px;height:20px;border:1px solid var(--color-text-faint);border-radius:3px;cursor:pointer;padding:0}.grauton-swatch:hover{border-color:var(--color-text);transform:scale(1.1)}.top-menu{position:relative;display:inline-block}.top-menu-dropdown{position:absolute;top:100%;left:0;background:var(--color-surface);border:1px solid var(--color-border);border-radius:4px;box-shadow:0 2px 8px var(--color-shadow);z-index:1000;min-width:120px;margin-top:2px}.top-menu-dropdown--right{left:auto;right:0}.top-menu-dropdown--up{top:auto;bottom:100%;margin-top:0;margin-bottom:2px}.top-menu-item{display:block;width:100%;text-align:left;padding:8px 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0;border:none;background:var(--color-border)}.shortcut-dialog-backdrop{position:fixed;inset:0;background:var(--color-scrim);display:flex;align-items:center;justify-content:center;z-index:2000}.shortcut-dialog{background:var(--color-surface);border:1px solid var(--color-border-strong);border-radius:6px;padding:20px;width:480px;max-width:calc(100vw - 32px);max-height:80vh;overflow-y:auto;box-shadow:0 4px 16px var(--color-shadow-strong);font-size:14px}.shortcut-dialog-title{font-weight:700;margin-bottom:12px;font-size:15px}.shortcut-dialog-table{width:100%;border-collapse:collapse;margin-bottom:16px}.shortcut-dialog-th{text-align:left;font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;color:var(--color-text-muted);padding:4px 8px;border-bottom:1px solid var(--color-border-subtle)}.shortcut-dialog-td{padding:6px 8px;border-bottom:1px solid var(--color-surface-raised);font-size:13px;vertical-align:top}.shortcut-dialog-row:last-child 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ease-out}.reload-prompt-message{flex:1;word-wrap:break-word;overflow-wrap:break-word}.reload-prompt-buttons{display:flex;align-items:center;gap:8px;flex-shrink:0}.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{padding:0;width:24px;height:24px;border:none;background:transparent;cursor:pointer;font-size:20px;line-height:1;color:inherit;display:flex;align-items:center;justify-content:center;transition:opacity .2s}.reload-prompt-close:hover{opacity:.7}@keyframes riseIn{0%{transform:translateY(24px);opacity:0}to{transform:translateY(0);opacity:1}}.empty-state-overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;pointer-events:none;z-index:10}.empty-state-hint{padding:12px 20px;background:var(--color-surface-overlay-soft);border:1px dashed var(--color-border-hint);border-radius:6px;color:var(--color-text-muted);font-size:15px;text-align:center;max-width:80%}.project-explorer{width:var(--shell-w-project-explorer);flex-shrink:0;overflow-y:auto;background:var(--color-surface-muted);border-right:1px solid var(--color-border-subtle);display:flex;flex-direction:column}.project-explorer-actions{display:flex;align-items:center;gap:2px;padding:4px;border-bottom:1px solid var(--color-border-subtle);flex-shrink:0}.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;overflow-y:auto;padding:4px 0}.project-tree-row{display:flex;align-items:center;gap:6px;padding:6px 8px;cursor:pointer;font-size:13px;transition:all 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.2s}.project-tree-chevron--open{transform:rotate(90deg)}.project-tree .top-menu{display:block;width:100%}.project-tree-add{display:flex;align-items:center;justify-content:center;width:100%;padding:6px 8px;margin:0;border:none;border-radius:0;background:transparent;box-shadow:none;cursor:pointer;transition:all .2s}.project-tree-add:hover{background:var(--color-surface-raised)}.project-tree-add-glyph{font-size:13px;line-height:1;color:var(--color-text-muted);opacity:.4;transition:all .2s}.project-tree-add:hover .project-tree-add-glyph{opacity:1}.story-icon{display:flex;align-items:center;justify-content:center;flex-shrink:0}.roof-tree-action{display:flex;align-items:center;justify-content:center;width:20px;height:20px;padding:0;border:none;border-radius:4px;background:transparent;cursor:pointer;flex-shrink:0;color:var(--color-text-muted)}.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{display:flex;align-items:center;justify-content:center;width:20px;height:20px;padding:0;border:none;border-radius:4px;background:transparent;cursor:pointer;flex-shrink:0;color:var(--color-icon-dimmed)}.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)}.project-row-more-button,.project-row-sync-button{display:flex;align-items:center;justify-content:center;width:20px;height:20px;padding:0;border:none;border-radius:4px;background:transparent;cursor:pointer;flex-shrink:0}.project-row-menu-icon svg,.project-row-more-button svg,.project-row-sync-button 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var(--color-accent);border-radius:4px;font:inherit;font-size:13px}.layer-row-toggle{display:flex;align-items:center;justify-content:center;width:22px;height:22px;padding:0;border:none;border-radius:4px;background:transparent;cursor:pointer;flex-shrink:0;color:var(--color-icon-dimmed)}.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{width:20px;height:20px;padding:1px;border:1px solid var(--color-border);border-radius:4px;background:var(--color-surface);cursor:pointer;flex-shrink:0}.layer-row-color-input:focus{outline:none;border-color:var(--color-accent);box-shadow:0 0 0 2px var(--color-accent-ring)}.layer-add-background-input{display:none}.touch-action-bar{position:absolute;left:50%;top:16px;transform:translate(-50%);display:flex;gap:8px;padding:6px;background:var(--color-surface);border:1px solid var(--color-border-strong);border-radius:8px;box-shadow:0 2px 8px var(--color-shadow);z-index:10}.touch-action-bar .top-icon-button{width:48px;height:48px}@media (pointer: coarse){.project-tree-row{user-select:none;-webkit-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{min-height:44px;align-items:center}.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%;min-height:44px;height:auto}.layer-row{min-height:44px}.toast-close,.reload-prompt-close{width:44px;height:44px}}