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ease}.icon-button:hover{background:var(--surface-hover)}.icon-button:disabled{color:var(--control-muted);cursor:default;opacity:.65}.icon-button:disabled:hover{background:transparent}.icon-button:focus-visible,.tool-button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.control-divider{width:1px;height:18px;margin:0 3px;background:var(--border)}.zoom-value{min-width:48px;padding:0 3px;color:var(--text-secondary);font-size:12px;font-variant-numeric:tabular-nums;font-weight:600;text-align:center}@media(pointer:coarse){.tool-button,.icon-button{min-width:44px;min-height:44px}.tool-tooltip{display:none}.color-swatch{width:44px;height:44px}.color-palette{grid-template-columns:repeat(4,44px);gap:4px}.tool-options{width:220px}.option-segments button{min-height:44px}.resize-handle{width:20px;height:20px;border-width:3px}.resize-handle--east{right:-13px}.resize-handle--corner{right:-12px;bottom:-12px}.connector-endpoint-handle{r:9px;stroke-width:3px}.connection-anchor{width:20px;height:20px}.connection-anchor--top{top:-11px}.connection-anchor--right{right:-11px}.connection-anchor--bottom{bottom:-11px}.connection-anchor--left{left:-11px}.frame-edge-hit--top,.frame-edge-hit--bottom{height:20px}.frame-edge-hit--top{top:-10px}.frame-edge-hit--bottom{bottom:-10px}.frame-edge-hit--right,.frame-edge-hit--left{width:20px}.frame-edge-hit--right{right:-10px}.frame-edge-hit--left{left:-10px}}@media(min-width:768px)and (max-width:1023px){.brand-mark{top:17px;left:18px}.tool-button{width:44px;height:44px}.tool-options{left:18px}.canvas-hint{bottom:18px}.zoom-dock{right:18px;bottom:18px}.history-dock{top:15px;right:18px}}@media(min-width:768px)and (max-width:900px){.toolbar-area{top:65px}.tool-options{top:126px;max-height:calc(100dvh - 196px)}.canvas-hint{display:none}}@media(max-width:767px){.brand-mark{top:calc(9px + env(safe-area-inset-top));left:calc(12px + env(safe-area-inset-left));min-height:44px}.board-title-input{max-width:min(128px,calc(100vw - 180px));min-height:32px;font-size:14px}.desktop-tool-dock{display:none}.toolbar-area{top:auto;right:calc(12px + env(safe-area-inset-right));bottom:calc(10px + env(safe-area-inset-bottom));left:calc(12px + env(safe-area-inset-left));z-index:7;transform:none}.mobile-toolbar-wrap{display:flex;justify-content:center}.mobile-tool-dock{position:relative;display:flex;width:100%;max-width:350px;min-width:0;justify-content:center;padding:4px;border-radius:16px}.mobile-tool-slot{min-width:0;flex:1 1 0}.mobile-tool-button{width:100%;min-width:0;height:52px;flex-direction:column;gap:2px;border-radius:10px;font-size:9px;line-height:1}.mobile-tool-button svg{width:19px;height:19px}.mobile-dock-collapse{display:grid;width:38px;min-width:38px;min-height:52px;padding:0;place-items:center;border:0;border-radius:10px;color:var(--muted);background:transparent}.mobile-dock-collapse:hover{background:var(--surface-hover)}.mobile-dock-collapse svg{width:18px}.show-tools-button{display:flex;min-width:92px;min-height:46px;align-items:center;justify-content:center;gap:6px;padding:0 15px;border:1px solid var(--border);border-radius:14px;color:var(--text-primary);background:var(--surface-raised);box-shadow:var(--shadow-lg);font-size:12px;font-weight:650}.show-tools-button svg{width:17px}.mobile-more-menu{right:0;bottom:calc(100% + 10px);width:min(286px,calc(100vw - 24px))}.mobile-more-tools{display:grid;grid-template-columns:repeat(3,1fr);gap:4px;margin-bottom:11px;padding-bottom:11px;border-bottom:1px solid var(--border)}.mobile-more-tools button{flex-direction:column}.tool-options{top:auto;right:calc(12px + env(safe-area-inset-right));bottom:calc(78px + env(safe-area-inset-bottom));left:calc(12px + env(safe-area-inset-left));width:auto;max-height:min(42dvh,340px);padding:10px 12px 12px;border-radius:14px}.tool-options.is-collapsed{right:auto;width:auto;max-width:none;padding:7px 8px 7px 12px}.tool-options-content{overflow-x:auto;overflow-y:hidden;display:flex;gap:13px;padding:2px 3px 3px;scrollbar-width:thin}.option-field,.option-field:last-child{width:194px;min-width:194px;margin:0}.color-palette{grid-template-columns:repeat(4,44px);gap:6px}.opacity-field input{min-height:40px}.mobile-selection-actions{position:absolute;right:calc(12px + env(safe-area-inset-right));bottom:calc(78px + env(safe-area-inset-bottom));left:calc(12px + env(safe-area-inset-left));z-index:6;display:flex;max-width:390px;margin-inline:auto;overflow-x:auto;padding:4px;border:1px solid var(--border);border-radius:12px;background:var(--surface-raised);box-shadow:var(--shadow-lg)}.mobile-selection-actions button{min-width:58px;flex:1 0 auto;flex-direction:column;padding:4px 7px;font-size:9px}.tool-options--object{bottom:calc(140px + env(safe-area-inset-bottom))}.canvas-hint,.zoom-dock,.empty-prompt-copy,.empty-prompt-tools{display:none}.empty-prompt{padding:12px 14px}.history-dock{top:calc(9px + env(safe-area-inset-top));right:calc(12px + env(safe-area-inset-right))}.history-controls{height:48px}.canvas-notice{bottom:calc(82px + env(safe-area-inset-bottom))}.canvas-viewport[data-editing-text=true] .toolbar-area,.canvas-viewport[data-editing-text=true] .tool-options,.canvas-viewport[data-editing-text=true] .mobile-selection-actions{visibility:hidden}}@media(max-width:360px){.toolbar-area{right:calc(8px + env(safe-area-inset-right));left:calc(8px + env(safe-area-inset-left))}.mobile-tool-button{font-size:8.5px}.mobile-dock-collapse{width:34px;min-width:34px}}@media(prefers-reduced-motion:reduce){.icon-button,.board-save-status[data-status=saving] i{transition:none;animation:none}}