.flat-mockup{position:absolute;inset:65px 0 0;background:#f7f7f7;z-index:3;display:flex;flex-direction:column;align-items:center;padding:12px 16px 22px;gap:12px}
.flat-mockup[hidden],.flat-mockup-sides[hidden]{display:none}
.flat-mockup canvas{width:100%;height:calc(100% - 56px);object-fit:contain;min-height:0}
.flat-mockup-sides{display:flex;gap:8px;flex-shrink:0}
.flat-mockup-sides button{font:inherit;font-size:14px;min-height:40px;padding:8px 22px;border:1px solid #ddd;border-radius:8px;background:#fff;cursor:pointer}
.flat-mockup-sides button.active{border-color:#ff6b00;color:#a94200;background:#fff4eb}
.show-flat-mockup .viewer-hint{display:none}
.show-flat-mockup #webgl{visibility:hidden}