/* Attribute lab: all artwork and controls belong to this module. */
.math-arena:has(.alab){position:relative!important;padding:0!important;min-width:0;overflow:hidden}
.math-arena:has(.alab)>.math-arena-content{position:absolute!important;inset:0!important;width:auto!important;height:auto!important;min-height:0!important;display:block!important}
.alab{position:absolute;inset:0;width:auto;height:auto;box-sizing:border-box;padding:clamp(10px,2vw,28px);display:flex;flex-direction:column;gap:clamp(6px,1.4vh,16px);background:#fff;color:#192333;font:500 clamp(12px,1.2vw,18px)/1.3 system-ui,sans-serif;overflow:hidden}
.alab [hidden]{display:none!important}
.alab.without-prediction{display:flex}
.alab.is-awaiting-prediction .alab-features,.alab.is-awaiting-prediction .alab-bottom{display:none}
.alab.is-zone-a-prediction.is-awaiting-prediction{display:flex}
.alab.is-zone-a-prediction.is-awaiting-prediction .alab-predict{display:none!important}
.alab.is-zone-a-prediction.is-awaiting-prediction .alab-mat{width:100%;height:100%;min-height:100%}
.alab-lens-preview{display:block;width:65%;height:65%;margin:auto}
.alab-lens-preview:empty{display:none}
.alab-lens-preview svg{width:100%;height:100%;display:block}
.alab .alab-tile.is-selected .alab-tile-label{background:#e3ebff;color:#2446ad;font-weight:800}
.alab button,.alab select{font:inherit;color:inherit;box-sizing:border-box;box-shadow:none;min-width:0;cursor:pointer;-webkit-tap-highlight-color:transparent}
.alab button{border:1px solid #dbe0e7;background:#f5f7fa;border-radius:14px;padding:9px 16px;min-height:44px;touch-action:manipulation}
.alab button:hover,.alab button:active{background:#edf3f9;color:#192333}
.alab button:focus-visible,.alab select:focus-visible{outline:3px solid #3787ff;outline-offset:3px}
.alab button:disabled{opacity:.5;cursor:default}
.alab button[aria-pressed=true]{box-shadow:inset 0 0 0 2px #537bf1}
.alab-features{display:flex;justify-content:center;gap:clamp(8px,1vw,18px)}
.alab .alab-chip{flex:1;max-width:140px;min-height:clamp(40px,9vh,112px);border:5px solid #eee;background:#f1f4fa;border-radius:clamp(12px,2vw,27px);font-weight:800;padding:6px;display:grid;place-items:center;text-align:center;cursor:default;user-select:none;-webkit-user-select:none;transition:background-color .28s ease,border-color .28s ease,transform .28s ease}
.alab .alab-chip[data-judgment=same]{background:#a0ff57;border-color:#77d83d;transform:scale(1.02)}
.alab .alab-chip[data-judgment=different]{background:#ff5358;border-color:#e63c43;color:#fff;transform:scale(1.02)}
.alab-predict,.alab-tools,.alab-evidence{display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap}
.alab-predict button,.alab-evidence button{min-width:92px;font-weight:750}
.alab-predict>span{margin-right:5px}
.alab-mat{position:relative;flex:1 1 0;min-height:0;min-width:0;border:0;isolation:isolate}
.alab .alab-tile{position:absolute;display:block;padding:0;border:0;border-radius:0;background:transparent!important;box-shadow:none!important;touch-action:none;will-change:transform;user-select:none;-webkit-user-select:none;opacity:1}
.alab .alab-tile.is-selected{z-index:2}
.alab-art{display:block;width:100%;height:100%;transform-origin:center;transition:transform .25s ease;pointer-events:none}
.alab-art svg{width:100%;height:100%;display:block;overflow:visible;opacity:1}
.alab-tile-label{position:absolute;bottom:-24px;left:calc(50% - 10px);font-size:12px;line-height:20px;width:20px;height:20px;border-radius:50%;background:#fff;color:#596474;pointer-events:none}
.alab-bottom{flex:0 0 auto;display:grid;gap:8px}
.alab-tools button{display:flex;align-items:center;gap:7px;font-size:25px;padding:7px 16px;line-height:1;min-width:104px;justify-content:center}
.alab-tools button span{font-size:12px;line-height:1.4}
.alab .alab-submit{background:#dbeaff;font-weight:700}
.alab-status{margin:0!important;text-align:center;min-height:1.3em;color:#64748b;font-size:12px}
.alab-status:empty{display:none;min-height:0}
.alab-ruler{position:absolute;z-index:4;top:5%;right:auto;bottom:5%;width:48px;height:auto;box-sizing:border-box;display:flex;flex-direction:column-reverse;justify-content:space-between;align-items:flex-end;padding:0;background:rgba(255,248,215,.9);border:2px solid #d2b85e;border-radius:10px;cursor:grab;touch-action:none;user-select:none;-webkit-user-select:none;pointer-events:auto;box-shadow:0 5px 16px rgba(94,76,25,.12)}
.alab-ruler.is-dragging{cursor:grabbing;box-shadow:0 8px 22px rgba(94,76,25,.22)}
.alab-ruler span{position:relative;width:100%;padding-right:6px;box-sizing:border-box;color:#66551f;font-size:10px;line-height:1;text-align:right}
.alab-ruler span::before{content:'';position:absolute;left:0;top:50%;width:15px;height:1px;background:#8d7841}.alab-ruler span:nth-child(5n + 1)::before{width:24px;height:2px}
.math-narrator .guide-choice[data-attribute-prediction][aria-pressed=true]{background:rgba(104,147,255,.4)!important;box-shadow:inset 0 0 0 3px #8fb4ff,0 10px 25px rgba(0,0,0,.2)!important;transform:scale(1.04)}
.alab .alab-lens{position:absolute;z-index:5;touch-action:none;width:clamp(72px,10vw,130px);height:clamp(72px,10vw,130px);border:4px solid #6c7eff;border-radius:50%;background:rgba(244,249,255,.93);padding:8px;font-size:12px;overflow-wrap:anywhere;box-shadow:0 5px 15px #27364d20}
.alab-builder{display:flex;flex-wrap:wrap;justify-content:center;gap:6px}
.alab-builder label{font-size:11px;display:grid;gap:3px}
.alab-builder select{max-width:110px;background:#fff;border:1px solid #dbe0e7;border-radius:6px;padding:3px}
@media(max-height:520px){.alab{padding:8px 12px;gap:5px;font-size:11px}.alab .alab-chip{min-height:36px;max-width:110px;border-width:3px}.alab button{padding:4px 9px;border-radius:8px;min-height:28px}.alab-tools button{font-size:20px;padding:3px 9px}.alab-tools button span{font-size:10px}.alab-bottom{gap:4px}.alab-status{font-size:10px}.alab-tile-label{bottom:-17px;font-size:10px;height:16px;line-height:16px}.alab-predict>span{font-size:10px}.alab .alab-lens{width:65px;height:65px;font-size:10px}}
@media(prefers-reduced-motion:reduce){.alab-art{transition:none}}
@media(max-height:520px){.alab button{min-height:36px}.alab .alab-tile{min-height:0}}