:root{--bg-base: #16161a;--bg-surface: #22222a;--bg-panel: #1c1c23;--bg-panel-header: #252530;--bg-cell: #2d2d38;--bg-input: #2a2a35;--border: #35353f;--border-light: #42424f;--text-primary: #e8e8f0;--text-secondary: #b0b0c0;--text-muted: #8e8ea6;--accent: #c8a84b;--accent-hover: #d9bc6a;--accent-dim: rgba(200, 168, 75, .15);--selected-ring: #d9bc6a;--selected-bg: rgba(77, 166, 255, .08);--danger: #e05555;--danger-hover: #f06666;--success: #4caf7d;--panel-width: 240px;--topbar-height: 48px;--statusbar-height: 32px;--radius-sm: 4px;--radius-md: 6px;--radius-lg: 8px;--logo1: #169513;--logo2: #2874CF;--logo3: #DE4343;--logo4: #603BA0}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%;width:100%;overflow:hidden}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,system-ui,sans-serif;font-size:13px;background:var(--bg-base);color:var(--text-primary);-webkit-font-smoothing:antialiased}button{cursor:pointer;font:inherit;border:none;background:none;color:inherit}input,select{font:inherit;color:inherit}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border-light);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.app-shell{display:flex;flex-direction:column;height:100%}.app-main{display:flex;flex:1;overflow:hidden}.panel{width:var(--panel-width);flex-shrink:0;background:var(--bg-panel);border-right:1px solid var(--border);display:flex;flex-direction:column;overflow:hidden;transition:none}.panel.panel-collapsed{width:28px}.panel.panel-right{border-right:none;border-left:1px solid var(--border)}.panel-collapse-bar{display:flex;align-items:center;justify-content:space-between;padding:0 6px;height:42px;flex-shrink:0;border-bottom:1px solid var(--border)}.panel-collapse-label{font-size:10px;font-weight:700;letter-spacing:.08em;color:var(--text-muted);text-transform:uppercase;-webkit-user-select:none;user-select:none}.panel-collapse-btn{width:32px;height:32px;display:flex;align-items:center;justify-content:center;background:none;border:none;border-radius:4px;color:var(--text-muted);cursor:pointer;font-size:30px;flex-shrink:0;padding:0;line-height:1}.panel-collapse-btn:hover{background:var(--border);color:var(--text-primary)}.panel-collapsed .panel-collapse-bar{justify-content:center;padding:0}.panel-section{display:flex;flex-direction:column;overflow:hidden}.panel-section+.panel-section{border-top:1px solid var(--border)}.panel-section-header{display:flex;align-items:center;justify-content:space-between;padding:8px 12px;background:var(--bg-panel-header);font-size:11px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--text-muted);flex-shrink:0}.panel-section-header button{width:20px;height:20px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);color:var(--text-muted);font-size:16px;line-height:1}.panel-section-header button:hover{background:var(--border);color:var(--text-primary)}.panel-section-body{overflow-y:auto;flex:1;padding:6px 0}.topbar{height:var(--topbar-height);background:var(--bg-surface);border-bottom:1px solid var(--border);display:flex;align-items:center;padding:0 12px;gap:8px;flex-shrink:0}.topbar-logo{font-weight:700;font-size:15px;color:var(--accent);margin-right:4px;background:none;border:none;cursor:pointer;padding:0;letter-spacing:inherit;white-space:nowrap}.topbar-logo:hover{color:var(--accent-hover)}.topbar-version{font-size:12px;color:var(--text-secondary);margin-right:4px;white-space:nowrap}.topbar-divider{width:1px;height:20px;background:var(--border);margin:0 4px}.topbar-pattern{display:flex;flex-direction:column;justify-content:center;gap:1px;padding:2px 10px;border-left:2px solid var(--accent);max-width:280px;overflow:hidden}.topbar-pattern-eyebrow{font-size:9px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--text-muted);line-height:1}.topbar-pattern-row{display:flex;align-items:center;gap:6px}.topbar-pattern-title{font-size:14px;font-weight:700;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;line-height:1.2}.topbar-pattern-unsaved{font-size:8px;color:var(--accent);line-height:1;flex-shrink:0}.topbar-pattern-edit{width:18px;height:18px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);color:var(--text-muted);font-size:11px;flex-shrink:0;opacity:.7}.topbar-pattern-edit:hover{background:var(--border);color:var(--accent);opacity:1}.topbar-btn{padding:5px 10px;border-radius:var(--radius-sm);background:var(--bg-input);border:1px solid var(--border);color:var(--text-secondary);font-size:12px;white-space:nowrap;transition:background .1s,color .1s,border-color .1s}.topbar-btn:hover{background:var(--border);color:var(--text-primary);border-color:var(--border-light)}.topbar-btn.primary{background:var(--accent);border-color:var(--accent);color:#1a1208;font-weight:600}.topbar-btn.primary:hover{background:var(--accent-hover);border-color:var(--accent-hover)}.topbar-btn.primary.saved{background:var(--success);border-color:var(--success);color:#fff}.topbar-icon-btn{padding:5px 8px;font-size:14px;line-height:1}.topbar-btn:disabled{opacity:.3;cursor:default;pointer-events:none}.topbar-spacer{flex:1}.topbar-user{font-size:12px;color:var(--text-muted);white-space:nowrap}.topbar-btn-signin{color:var(--accent);border-color:var(--accent)}.topbar-btn-signin:hover{background:var(--accent);color:#fff}.canvas-area{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;overflow:hidden;background:var(--bg-base);position:relative}.canvas-zoom-controls{position:absolute;bottom:12px;right:12px;display:flex;align-items:center;gap:6px;background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-md);padding:4px 8px;font-size:12px;color:var(--text-secondary)}.canvas-zoom-controls button{width:22px;height:22px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);font-size:16px;line-height:1}.canvas-zoom-controls button:hover{background:var(--border);color:var(--text-primary)}.grid-wrapper{display:flex;flex-direction:column;align-items:center;-webkit-user-select:none;user-select:none}.grid-col-labels{display:flex;padding-left:24px}.grid-row-with-label{display:flex;align-items:center}.grid-row-label{width:24px;text-align:center;font-size:11px;color:var(--text-muted);flex-shrink:0}.grid-col-label{font-size:11px;color:var(--text-muted);text-align:center;flex-shrink:0}.grid-container{display:grid;gap:0;border:1px solid var(--border)}.grid-cell{position:relative;cursor:var(--grid-cell-cursor, pointer);border:1px solid var(--border);overflow:hidden}.grid-cell:hover:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:#ffffff0f;pointer-events:none}.grid-cell.selected{outline:6px solid var(--selected-ring);outline-offset:-6px;z-index:2}.grid-cell:focus-visible{outline:3px solid var(--selected-ring);outline-offset:-3px;z-index:2}.diagonal-split-1{background:linear-gradient(135deg,var(--color1) 50%,var(--color2) 50%)}.diagonal-split-2{background:linear-gradient(135deg,var(--color2) 50%,var(--color1) 50%)}.diagonal-split-3{background:linear-gradient(225deg,var(--color1) 50%,var(--color2) 50%)}.diagonal-split-4{background:linear-gradient(225deg,var(--color2) 50%,var(--color1) 50%)}.quad-split-1{padding:0;margin:0}.quad-split-1 svg{display:block}.statusbar{height:var(--statusbar-height);background:var(--bg-surface);border-top:1px solid var(--border);display:flex;align-items:center;padding:0 16px;gap:16px;font-size:12px;color:var(--text-muted);flex-shrink:0}.statusbar-item{display:flex;align-items:center;gap:4px}.statusbar-dot{width:6px;height:6px;border-radius:50%;background:var(--success)}.statusbar-error{color:var(--danger)}.statusbar-paint-banner{color:var(--accent);gap:6px}.statusbar-paint-swatch{width:12px;height:12px;border-radius:2px;border:1px solid rgba(255,255,255,.2);flex-shrink:0}.pattern-item{display:flex;align-items:center;padding:6px 12px;cursor:pointer;border-radius:0;gap:6px;color:var(--text-secondary)}.pattern-item:hover{background:var(--bg-surface);color:var(--text-primary)}.pattern-item.active{background:var(--accent-dim);color:var(--accent)}.pattern-item-name{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:13px}.pattern-item-delete{width:18px;height:18px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);color:var(--text-muted);font-size:13px;opacity:0;flex-shrink:0}.pattern-item:hover .pattern-item-delete{opacity:1}.pattern-item-delete:hover{background:var(--danger);color:#fff}.pattern-thumbnail-popup{position:fixed;z-index:200;background:var(--bg-surface);border:1px solid var(--border-light);border-radius:var(--radius-md);padding:6px;pointer-events:none;box-shadow:0 4px 16px #00000080}.palette-item{display:flex;align-items:center;padding:5px 12px;cursor:pointer;gap:8px;color:var(--text-secondary)}.palette-item:hover{background:var(--bg-surface);color:var(--text-primary)}.palette-item:focus-visible{outline:2px solid var(--selected-ring);outline-offset:-2px}.palette-swatch{width:18px;height:18px;border-radius:var(--radius-sm);border:1px solid rgba(255,255,255,.12);flex-shrink:0}.palette-item-name{flex:1;font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.palette-item-actions{display:flex;gap:2px;opacity:0}.palette-item:hover .palette-item-actions,.palette-item:focus-within .palette-item-actions{opacity:1}.palette-item-actions button{width:18px;height:18px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);font-size:12px;color:var(--text-muted)}.palette-item-actions button:hover{background:var(--border);color:var(--text-primary)}.palette-item.painting-active{background:var(--accent-dim);color:var(--text-primary);outline:2px solid var(--accent);outline-offset:-2px;border-radius:var(--radius-sm)}.palette-add-btn{display:flex;align-items:center;gap:6px;width:100%;padding:7px 12px;color:var(--text-muted);font-size:12px;border-top:1px solid var(--border);margin-top:4px}.palette-add-btn:hover{color:var(--accent);background:var(--accent-dim)}.inspector-empty{padding:24px 16px;text-align:center;color:var(--text-muted);font-size:12px;line-height:1.6}.inspector-cell-id{padding:10px 12px 4px;font-size:11px;font-weight:600;color:var(--text-muted);letter-spacing:.06em;text-transform:uppercase}.type-selector{display:grid;grid-template-columns:repeat(4,1fr);gap:4px;padding:8px 10px}.type-selector-btn{aspect-ratio:1;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--bg-input);overflow:hidden;cursor:pointer;position:relative}.type-selector-btn:hover{border-color:var(--border-light)}.type-selector-btn.active{border-color:var(--selected-ring);box-shadow:0 0 0 1px var(--selected-ring)}.type-selector-btn svg{width:100%;height:100%;display:block}.type-selector-btn.wide{grid-column:span 2;aspect-ratio:2 / 1}.color-input-row{display:flex;align-items:center;gap:6px;padding:4px 10px}.color-input-label{font-size:11px;color:var(--text-muted);width:52px;flex-shrink:0}.color-swatch-btn{width:28px;height:28px;border-radius:var(--radius-sm);border:1px solid rgba(255,255,255,.15);flex-shrink:0;cursor:pointer}.color-swatch-btn:focus-visible,.picker-palette-swatch:focus-visible{outline:2px solid var(--selected-ring);outline-offset:2px}.color-picker-popover{z-index:9999;background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-md);padding:10px;display:flex;flex-direction:column;gap:8px;box-shadow:0 8px 24px #00000080;width:180px}.picker-palette-swatches{display:flex;flex-wrap:wrap;gap:4px;margin-bottom:8px}.picker-palette-swatch{width:28px;height:28px;border-radius:var(--radius-sm);border:1px solid rgba(255,255,255,.15);cursor:pointer;flex-shrink:0}.picker-palette-swatch:hover{border-color:var(--text-primary);transform:scale(1.1)}.color-picker-popover input[type=color]{width:100%;height:100px;padding:0;border:none;border-radius:var(--radius-sm);cursor:pointer;background:none}.color-hex-input{flex:1;background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-sm);padding:4px 8px;font-size:12px;font-family:SF Mono,Fira Code,monospace;text-transform:uppercase;color:var(--text-primary)}.color-hex-input:focus{outline:none;border-color:var(--selected-ring)}.color-hex-input.invalid{border-color:var(--danger)}.metrics-table{width:100%;border-collapse:collapse;font-size:12px}.metrics-table th{text-align:left;padding:4px 8px;color:var(--text-muted);font-weight:600;border-bottom:1px solid var(--border);font-size:11px;text-transform:uppercase;letter-spacing:.04em}.metrics-table td{padding:4px 8px;border-bottom:1px solid var(--border);color:var(--text-secondary)}.metrics-table tr:last-child td{border-bottom:none}.metrics-color-cell{display:flex;align-items:center;gap:6px}.metrics-swatch{width:14px;height:14px;border-radius:3px;border:1px solid rgba(255,255,255,.1);flex-shrink:0}.metrics-hex{font-family:SF Mono,Fira Code,monospace;font-size:11px}.metrics-empty{padding:16px;text-align:center;color:var(--text-muted);font-size:12px}.metrics-table-wrap{padding:6px 0;overflow-y:auto;flex:1;min-height:0}.metrics-color-cell--addable{cursor:pointer}.metrics-color-cell--addable:hover .metrics-hex{color:var(--accent)}.metrics-add-icon{margin-left:auto;font-size:13px;color:var(--text-muted);line-height:1;opacity:0;transition:opacity .1s}.metrics-color-cell--addable:hover .metrics-add-icon{opacity:1}.metrics-add-popup{position:fixed;z-index:200;background:var(--bg-surface);border:1px solid var(--border);border-radius:6px;padding:4px;box-shadow:0 4px 16px #0006}.metrics-add-popup-btn{background:none;color:var(--accent);border:none;border-radius:4px;padding:6px 12px;font-size:12px;cursor:pointer;white-space:nowrap;width:100%;text-align:left}.metrics-add-popup-btn:hover{background:var(--accent-dim)}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000a6;display:flex;align-items:center;justify-content:center;z-index:200}.modal{background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-lg);width:480px;max-width:95vw;max-height:90vh;display:flex;flex-direction:column;box-shadow:0 20px 60px #0009}.modal-wide{width:560px}.help-section{margin-bottom:20px}.help-section:last-child{margin-bottom:0}.help-section-title{font-size:11px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--text-muted);margin-bottom:6px}.help-section-body{font-size:13px;color:var(--text-secondary);line-height:1.6;margin:0}.help-section-body strong{color:var(--text-primary);font-weight:600}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:14px 16px 12px;border-bottom:1px solid var(--border)}.modal-title{font-size:14px;font-weight:600;color:var(--text-primary)}.modal-close-btn{width:24px;height:24px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);color:var(--text-muted);font-size:18px}.modal-close-btn:hover{background:var(--border);color:var(--text-primary)}.modal-body{flex:1;overflow-y:auto;padding:16px}.modal-footer{display:flex;justify-content:flex-end;gap:8px;padding:12px 16px;border-top:1px solid var(--border)}.btn{padding:7px 14px;border-radius:var(--radius-sm);font-size:13px;cursor:pointer;border:1px solid transparent;transition:background .1s,color .1s}.btn-primary{background:var(--accent);color:#1a1208;font-weight:600;border-color:var(--accent)}.btn-primary:hover{background:var(--accent-hover);border-color:var(--accent-hover)}.btn-secondary{background:var(--bg-input);color:var(--text-secondary);border-color:var(--border)}.btn-secondary:hover{background:var(--border);color:var(--text-primary)}.btn-danger{background:var(--danger);color:#fff;border-color:var(--danger)}.btn-danger:hover{background:var(--danger-hover)}.json-textarea{width:100%;height:320px;background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px;font-family:SF Mono,Fira Code,monospace;font-size:12px;color:var(--text-primary);resize:vertical;line-height:1.5}.json-textarea:focus{outline:none;border-color:var(--selected-ring)}.json-tabs{display:flex;gap:0;margin-bottom:12px;border-bottom:1px solid var(--border)}.json-tab{padding:7px 16px;font-size:13px;color:var(--text-muted);border-bottom:2px solid transparent;margin-bottom:-1px}.json-tab.active{color:var(--accent);border-bottom-color:var(--accent)}.json-tab:hover:not(.active){color:var(--text-secondary)}.modal-field{display:flex;flex-direction:column;gap:6px;margin-bottom:12px}.modal-label{font-size:12px;color:var(--text-muted);font-weight:500}.modal-input{background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-sm);padding:7px 10px;font-size:13px;color:var(--text-primary);width:100%}.modal-input:focus{outline:none;border-color:var(--selected-ring)}.overwrite-warning{padding:8px 10px;background:#e055551f;border:1px solid rgba(224,85,85,.3);border-radius:var(--radius-sm);color:#f08080;font-size:12px;margin-top:4px}.dim-stepper{display:flex;align-items:stretch;border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden}.dim-stepper-btn{background:var(--bg-input);border:none;color:var(--text-primary);font-size:18px;width:40px;cursor:pointer;-webkit-user-select:none;user-select:none;flex-shrink:0;transition:background .1s}.dim-stepper-btn:hover:not(:disabled){background:var(--bg-hover)}.dim-stepper-btn:disabled{opacity:.3;cursor:default}.dim-stepper-val{flex:1;text-align:center;font-size:16px;font-weight:600;color:var(--text-primary);border-left:1px solid var(--border);border-right:1px solid var(--border);padding:8px 0;line-height:1}.migration-desc{font-size:13px;color:var(--text-secondary);margin:0 0 12px;line-height:1.5}.migration-section-label{font-size:11px;font-weight:600;letter-spacing:.04em;color:var(--text-muted);margin-bottom:4px}.migration-list{list-style:none;margin:0 0 8px;padding:0;max-height:140px;overflow-y:auto;background:var(--bg-base);border:1px solid var(--border);border-radius:var(--radius-sm)}.migration-list li{padding:5px 10px;font-size:13px;color:var(--text-primary);border-bottom:1px solid var(--border)}.migration-list li:last-child{border-bottom:none}.migration-note{font-size:11px;color:var(--text-muted);margin:10px 0 0;line-height:1.5}.color-edit-wheel{width:100%;height:120px;border-radius:var(--radius-md);border:1px solid var(--border);cursor:pointer;display:block}.color-edit-preview{width:100%;height:48px;border-radius:var(--radius-md);border:1px solid rgba(255,255,255,.1);margin-bottom:12px}.splash-shell{height:100%;width:100%;display:flex;align-items:center;justify-content:center;background:var(--bg-base)}.splash-card{display:flex;flex-direction:column;align-items:center;gap:28px;max-width:440px;width:90%;padding:48px 40px;background:var(--bg-surface);border:1px solid var(--border);border-radius:16px;box-shadow:0 24px 64px #00000080;text-align:center}.splash-logo{display:flex;flex-direction:column;align-items:center;gap:10px}.splash-logo-icon{width:120px;height:120px;display:block;color:var(--accent)}.topbar-logo-svg{width:24px;height:24px;display:inline-block;vertical-align:middle;margin-right:3px;color:currentColor}.splash-title{font-size:32px;font-weight:700;color:var(--text-primary);letter-spacing:-.5px}.splash-tagline{font-size:15px;color:var(--text-secondary);line-height:1.5}.splash-features{display:flex;flex-direction:column;gap:8px;width:100%;text-align:left}.splash-feature{font-size:13px;color:var(--text-muted);padding-left:18px;position:relative}.splash-feature:before{content:"✦";position:absolute;left:0;color:var(--accent);font-size:9px;top:2px}.splash-actions{display:flex;gap:12px;width:100%}.splash-btn{flex:1;display:flex;flex-direction:column;align-items:center;gap:4px;padding:14px 12px;border-radius:var(--radius-md);border:1px solid transparent;cursor:pointer;transition:background .15s,border-color .15s;font-size:14px;font-weight:600}.splash-btn-sub{font-size:11px;font-weight:400;opacity:.8}.splash-btn-primary{background:var(--accent);color:#1a1208;border-color:var(--accent)}.splash-btn-primary:hover{background:var(--accent-hover);border-color:var(--accent-hover)}.splash-btn-secondary{background:var(--bg-input);color:var(--text-muted);border-color:var(--border);cursor:not-allowed;opacity:.55}.splash-btn-signin{background:var(--selected-ring);color:#fff;border-color:var(--selected-ring)}.splash-btn-signin:hover{background:#3a95ef;border-color:#3a95ef}.about-modal{width:440px}.about-modal-body{display:flex;flex-direction:column;align-items:center;gap:20px;text-align:center}.about-signin-btn{width:100%}.login-form{display:flex;flex-direction:column;gap:14px;width:100%}.login-field{display:flex;flex-direction:column;gap:6px;text-align:left}.login-label{font-size:12px;color:var(--text-muted);font-weight:500}.login-input{background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-md);padding:10px 12px;font-size:14px;color:var(--text-primary);width:100%}.login-input:focus{outline:none;border-color:var(--selected-ring)}.login-error{padding:8px 12px;background:#e055551f;border:1px solid rgba(224,85,85,.3);border-radius:var(--radius-sm);color:#f08080;font-size:13px;text-align:left}.login-actions{display:flex;gap:10px;margin-top:4px}.login-cancel{cursor:pointer;opacity:1}.print-view{background:#fff;color:#000;min-height:100vh;padding:24px}.print-header{margin-bottom:20px}.print-header h1{font-size:20px;font-weight:700}.printable-grid-container{display:inline-block}.printable-grid{display:grid;gap:0;border:2px solid #333}.printable-cell{border:1px solid #333}@media(max-width:768px){.app-main{position:relative}.panel{position:absolute;top:0;bottom:0;z-index:100}.panel:not(.panel-right){left:0}.panel.panel-right{right:0}.panel:not(.panel-collapsed){box-shadow:0 8px 24px #00000080}.canvas-area{padding-left:28px;padding-right:28px}}@media print{.print-view{padding:0}.print-header{padding:12px}.print-no-print{display:none!important}}