:root{color-scheme:dark;--bg-app: #1b1b1e;--bg-panel: #232326;--bg-panel-raised: #2a2a2e;--bg-input: #1e1e21;--bg-hover: rgba(255, 255, 255, .06);--bg-active: rgba(61, 139, 253, .18);--border: rgba(255, 255, 255, .09);--border-strong: rgba(255, 255, 255, .16);--text: #e7e7ea;--text-dim: #9a9aa3;--text-faint: #6c6c74;--accent: #3d8bfd;--accent-strong: #63a4ff;--accent-text: #ffffff;--danger: #ef5b5b;--radius: 6px;--radius-sm: 4px;--font: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans", "Yu Gothic", sans-serif}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:var(--bg-app);color:var(--text);font-family:var(--font);font-size:14px}#app{display:flex;flex-direction:column;min-height:100vh}#app.left-handed{flex-direction:column-reverse}@media (min-width: 700px){#app{flex-direction:row}#app.left-handed{flex-direction:row-reverse}}.toolbar{display:flex;flex-direction:row;align-items:center;gap:4px;padding:6px;background:var(--bg-panel);border-bottom:1px solid var(--border);flex-shrink:0;overflow-x:auto}@media (min-width: 700px){.toolbar{flex-direction:column;border-bottom:none;border-right:1px solid var(--border);overflow-x:visible;overflow-y:auto}#app.left-handed .toolbar{border-right:none;border-left:1px solid var(--border)}}.toolbar-divider{width:24px;height:1px;background:var(--border);margin:4px auto;flex-shrink:0}@media (max-width: 699px){.toolbar-divider{width:1px;height:24px;margin:0 4px}}.tool-button{width:40px;height:40px;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:1.15rem;line-height:1;padding:0;border:1px solid transparent;border-radius:var(--radius-sm);background:transparent;color:var(--text)}.tool-button:hover{background:var(--bg-hover)}.tool-button.active{background:var(--bg-active);border-color:var(--accent);color:var(--accent-strong);outline:none}.panel{display:flex;flex-direction:column;width:320px;flex-shrink:0;background:var(--bg-panel);border-bottom:1px solid var(--border);overflow-y:auto;max-height:40vh}@media (min-width: 700px){.panel{border-bottom:none;border-right:1px solid var(--border);max-height:none;height:100vh}#app.left-handed .panel{border-right:none;border-left:1px solid var(--border)}}.panel-section{border-bottom:1px solid var(--border)}.panel-section>summary{list-style:none;cursor:pointer;padding:10px 12px;font-size:.8rem;font-weight:600;letter-spacing:.02em;color:var(--text-dim);text-transform:uppercase;display:flex;align-items:center;gap:6px;-webkit-user-select:none;user-select:none}.panel-section>summary::-webkit-details-marker{display:none}.panel-section>summary:before{content:"▸";display:inline-block;font-size:.7rem;color:var(--text-faint);transition:transform .12s ease;width:.8em}.panel-section[open]>summary:before{transform:rotate(90deg)}.panel-section>summary:hover{background:var(--bg-hover);color:var(--text)}.panel-section-body{display:flex;flex-direction:column;gap:8px;padding:4px 12px 14px}.panel-hint{margin:0;font-size:.78rem;color:var(--text-faint);line-height:1.4}.status-bar{margin:0;padding:8px 12px;font-size:.78rem;color:var(--text-dim);border-top:1px solid var(--border);background:var(--bg-panel-raised)}.slider-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px;min-height:28px}.slider-row label,.slider-row>span.row-label{width:4.5rem;flex-shrink:0;font-size:.8rem;color:var(--text-dim)}.slider-row .value{width:3rem;text-align:right;font-variant-numeric:tabular-nums;font-size:.8rem;color:var(--text-dim);flex-shrink:0}button{padding:6px 10px;font-size:.85rem;font-family:inherit;color:var(--text);background:var(--bg-panel-raised);border:1px solid var(--border-strong);border-radius:var(--radius-sm);cursor:pointer;white-space:nowrap;flex-shrink:0}button:hover{background:var(--bg-hover);border-color:var(--accent)}button:active{background:var(--bg-active)}button.active{background:var(--bg-active);border-color:var(--accent);color:var(--accent-strong);outline:none}button.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-text);font-weight:600}button.primary:hover{background:var(--accent-strong);border-color:var(--accent-strong)}input[type=text],input[type=number],select{padding:5px 8px;font-size:.85rem;font-family:inherit;color:var(--text);background:var(--bg-input);border:1px solid var(--border-strong);border-radius:var(--radius-sm)}input[type=number]{width:4.5rem}select{max-width:100%}input[type=color]{width:2.2rem;height:2.2rem;padding:2px;border:1px solid var(--border-strong);border-radius:var(--radius-sm);background:var(--bg-input);flex-shrink:0}input[type=checkbox]{width:1rem;height:1rem;accent-color:var(--accent);flex-shrink:0}input[type=range]{flex:1 1 60px;min-width:60px;height:1.4rem;accent-color:var(--accent);background:transparent}.layer-list{border:1px solid var(--border);border-radius:var(--radius);max-height:240px;overflow-y:auto;background:var(--bg-input)}.layer-item{border-bottom:1px solid var(--border)}.layer-item:last-child{border-bottom:none}.layer-row{display:flex;align-items:center;gap:8px;padding:6px 8px}.layer-row.disabled{opacity:.5}.layer-row.active{background:var(--bg-active)}.layer-name{flex:1;min-width:0;cursor:pointer;-webkit-user-select:none;user-select:none;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:.85rem}.layer-name-input{flex:1;font-size:.85rem}.layer-move-buttons{display:flex;flex-direction:column;gap:1px}.layer-move-buttons button{padding:0 .35rem;font-size:.6rem;line-height:1.3;border-color:var(--border)}.layer-extra-row{display:flex;flex-wrap:wrap;align-items:center;gap:6px;padding:0 8px 8px 46px;font-size:.78rem}.layer-extra-row label{flex-shrink:0;color:var(--text-dim)}.layer-extra-row input[type=range]{height:1.2rem}.layer-extra-row .value{width:2.6rem;text-align:right;font-variant-numeric:tabular-nums;flex-shrink:0;color:var(--text-dim)}.blend-mode-select{flex-shrink:0;max-width:6rem;font-size:.78rem;padding:3px 5px}.layer-thumb{flex-shrink:0;max-width:36px;max-height:36px;border:1px solid var(--border-strong);border-radius:var(--radius-sm);background:repeating-conic-gradient(#3a3a3f 0% 25%,transparent 0% 50%) 0 / 8px 8px;image-rendering:pixelated}.adjust-checkbox{display:flex;align-items:center;gap:4px;font-size:.78rem;color:var(--text-dim);white-space:nowrap;flex-shrink:0}.anchor-grid{display:grid;grid-template-columns:repeat(3,1.8rem);grid-template-rows:repeat(3,1.8rem);gap:2px;width:fit-content}.anchor-button{padding:0;border:1px solid var(--border-strong)}.anchor-button.active{background:var(--bg-active);border-color:var(--accent)}.swatch-list{display:flex;flex-wrap:wrap;gap:4px}.swatch-button{width:1.6rem;height:1.6rem;padding:0;border:1px solid var(--border-strong);border-radius:var(--radius-sm)}.history-list{max-height:160px}.history-row{display:block;width:100%;text-align:left;padding:6px 10px;border:none;border-radius:0;background:none;font-size:.82rem;color:var(--text-dim)}.history-row:hover{background:var(--bg-hover);color:var(--text);border-color:transparent}.history-current{font-weight:600;background:var(--bg-active);color:var(--accent-strong);cursor:default}.preview-area{position:relative;flex:1;display:flex;align-items:center;justify-content:center;background:var(--bg-app);background-image:linear-gradient(45deg,#2c2c30 25%,transparent 25%),linear-gradient(-45deg,#2c2c30 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#2c2c30 75%),linear-gradient(-45deg,transparent 75%,#2c2c30 75%);background-size:20px 20px;background-position:0 0,0 10px,10px -10px,-10px 0px;min-height:300px;overflow:auto;padding:24px}.canvas-stack{position:relative;display:inline-block;line-height:0;box-shadow:0 0 0 1px var(--border-strong),0 8px 24px #00000080}.guide-overlay{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;pointer-events:none}.text-input-overlay{position:absolute;z-index:1;background:#ffffffeb;color:#111;border:1px solid var(--accent);border-radius:var(--radius-sm);padding:2px 4px;font-family:sans-serif;min-width:4rem}.eraser-ring{position:absolute;display:none;border:1.5px dashed var(--text);border-radius:50%;transform:translate(-50%,-50%);pointer-events:none;box-shadow:0 0 0 1px #000c}#preview-canvas{max-width:100%;max-height:70vh;image-rendering:pixelated;touch-action:none;background:#fff;display:block}