/* Live 3D preview (UW-069, CA96). */
.mcu3d{margin:0;display:grid;gap:6px}
.mcu3d-view{position:relative;width:100%;aspect-ratio:4/3;background:#eef1f3;border-radius:8px;overflow:hidden;cursor:grab}
.mcu3d-view:active{cursor:grabbing}
.mcu3d-view canvas{display:block;width:100%;height:100%}
.mcu3d:not(.ready) .mcu3d-view::after{content:"Loading 3D preview…";position:absolute;inset:0;display:grid;place-items:center;color:#56626e;font-size:14px}
.mcu3d-cap{display:none;font-size:13px;line-height:1.4;color:#56626e}
.mcu3d-sample{display:none;font-weight:600;color:#1c2733}
.mcu3d-view[data-sample="yes"]+.mcu3d-cap .mcu3d-sample{display:inline}
.review-product.has-3d .mcu3d{max-width:420px}
/* Phones: small 3D view stuck to the top corner while the form scrolls (CA96, Ben Sept 29) */
.mcu3d-mini-x{display:none}
.mcu3d.mini{position:fixed;bottom:calc(env(safe-area-inset-bottom,0px) + 12px);right:10px;width:min(36vw,160px);transition:opacity .15s;z-index:60;background:#fff;border-radius:10px;box-shadow:0 4px 16px rgba(15,30,50,.28);padding:0}
.mcu3d.mini .mcu3d-cap{display:none}
.mcu3d.mini .mcu3d-view{border-radius:10px}
.mcu3d.mini .mcu3d-mini-x{display:block;position:absolute;top:-10px;left:-10px;width:30px;height:30px;border:0;border-radius:50%;background:#1c2733;color:#fff;font-size:18px;line-height:30px;padding:0;cursor:pointer;box-shadow:0 1px 4px rgba(0,0,0,.3)}

/* Size-box steppers (Ben, Sept 29) */
.mcu-stepwrap{position:relative;display:block}
.mcu-stepwrap>input.mcu-stepped{padding-right:40px;width:100%;box-sizing:border-box}
.mcu-step{position:absolute;top:3px;bottom:3px;right:3px;width:32px;display:flex;flex-direction:column;gap:2px}
.mcu-step button{flex:1;min-height:0;margin:0;padding:0;border:0;border-radius:3px;background:#eef2f6;color:#1b2a41;font-size:10px;line-height:1;cursor:pointer;touch-action:manipulation;user-select:none}
.mcu-step button:hover{background:#dbe5f0}
.mcu-step button:active{background:#1f5fae;color:#fff}
@media (pointer:coarse){.mcu-step{width:40px}.mcu-stepwrap>input.mcu-stepped{padding-right:48px}.mcu-step button{font-size:12px}}
/* Buy Now hand-off: the photo sits over the 3D view, then fades into the model (CA96, Ben Sept 29) */
.mcu3d-intro{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:1;filter:blur(0);transition:opacity 2s ease-in-out,filter 1.6s ease-in;pointer-events:none;z-index:1;will-change:opacity,filter}
.mcu3d-intro.go{opacity:0;filter:blur(6px)} /* soft blur as it fades: the small photo/model offset (about 3%) melts instead of showing a double edge (Ben, Sept 29) */
.mcu3d-view.has-intro::after{display:none}
@media (prefers-reduced-motion:reduce){.mcu3d-intro{transition:none}}
.mcu3d.mini.mini-away{opacity:0;pointer-events:none}
.mcu3d-background-options{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
.mcu3d-background-options button{display:flex;flex-direction:column;align-items:stretch;min-width:0;overflow:hidden;padding:3px;border:2px solid #d5dde5;border-radius:7px;background:#fff;color:#253746;text-align:left;cursor:pointer;font:inherit}
.mcu3d-background-options button[aria-pressed=true]{border-color:#2465a7;background:#eef5fc}
.mcu3d-background-options button:focus-visible{outline:3px solid #2465a7;outline-offset:2px}
.mcu3d-background-options img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:3px;margin:0}
.mcu3d-background-options span,.mcu3d-background-options small{padding:0 4px;overflow-wrap:anywhere;line-height:1.25}
.mcu3d-background-options span{font-size:12px;font-weight:650}
.mcu3d-background-options small{font-size:11px;color:#526270;margin-top:3px}
.mcu3d-background-status{font-size:11px;line-height:1.35;color:#526270;margin:5px 0 0}
.mcu3d.mini .mcu3d-backgrounds{display:none}

.mcu3d-background-status:empty{display:none}
.mcu3d-background-options button{position:relative}
.mcu3d-background-options .mcu3d-progress{position:absolute;inset:3px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;padding:0;background:rgba(8,24,40,.58);color:#fff;border-radius:3px;pointer-events:none}
.mcu3d-progress>span{font-size:13px;font-weight:700;color:#fff}
.mcu3d-loading-ring{display:block;width:22px;height:22px;box-sizing:border-box;border:3px solid rgba(255,255,255,.4);border-top-color:#fff;border-radius:50%;animation:mcu3d-loading .8s linear infinite}
@keyframes mcu3d-loading{to{transform:rotate(360deg)}}
@media(prefers-reduced-motion:reduce){.mcu3d-loading-ring{animation:none}}
.mcu3d-wall-editor{padding:12px;background:#f5f8fb;border-top:1px solid #d5dfe8}.mcu3d-wall-editor[hidden],.mcu3d-wall-body[hidden],.mcu3d-wall-partial[hidden],.mcu3d-wall-gable[hidden]{display:none}.mcu3d-wall-editor button{font:inherit;font-size:13px;cursor:pointer;min-height:40px;padding:8px 12px;background:#fff;border:1px solid #aabccc;border-radius:5px;color:#123553}.mcu3d-wall-toggle{width:100%;font-weight:700!important}.mcu3d-wall-body{padding-top:12px}.mcu3d-face-list{display:flex;flex-wrap:wrap;gap:5px;margin-bottom:14px}.mcu3d-face-list button{flex:1 0 22%;padding:5px}.mcu3d-wall-editor button[aria-pressed=true]{background:#123e65;color:white;border-color:#123e65}.mcu3d-wall-heading{display:block;margin-bottom:8px}.mcu3d-wall-coverage{display:flex;gap:6px}.mcu3d-wall-coverage button{flex:1}.mcu3d-wall-partial,.mcu3d-wall-gable{display:flex;align-items:center;gap:10px;margin:12px 0 0;font-size:13px}.mcu3d-wall-partial input{width:70px;min-height:38px}.mcu3d-wall-gable input{width:20px;height:20px}.mcu3d.mini .mcu3d-wall-editor{display:none}

.mcu-model-editor{padding:12px;background:#fff;border:1px solid #ccd8e3;border-radius:8px;color:#18364d}
.mcu-model-editor button{min-height:44px;padding:8px 12px;border:1px solid #2873b0;border-radius:6px;background:#fff;color:#16588c;font:inherit;cursor:pointer}
.mcu-model-editor button:disabled{opacity:.5;cursor:default}
.mcu-model-editor p{font-size:14px;line-height:1.4}
.mcu-model-dimension{display:grid;grid-template-columns:minmax(0,1fr) 76px 70px;align-items:center;gap:8px;margin:10px 0;font-size:14px}
.mcu-model-dimension input{min-width:0;width:100%;box-sizing:border-box;min-height:44px;padding:8px;border:1px solid #879dad;border-radius:5px;font:inherit}
.mcu-model-handles{position:absolute;inset:0;pointer-events:none;z-index:5;overflow:hidden}
.mcu-model-handle{position:absolute;transform:translate(-50%,-50%);pointer-events:auto;min-height:44px;min-width:52px;padding:8px;border:2px solid #fff;border-radius:7px;background:#176db0;color:#fff;font:600 14px sans-serif;box-shadow:0 1px 5px #0005;cursor:ew-resize}
.mcu-model-handle:focus-visible,.mcu-model-editor :focus-visible{outline:3px solid #efb330;outline-offset:2px}
.mcu-model-editor[hidden],.mcu-model-handles[hidden],.mcu-model-editor [hidden]{display:none!important}