.nerva-customizer{width:min(1100px,96vw);height:min(850px,94dvh);max-width:none;max-height:none;margin:auto;padding:0;border:1px solid #444;border-radius:20px;background:#141416;color:#f5f5f5;font:15px/1.5 Poppins,Arial,sans-serif;overflow:hidden;box-sizing:border-box}.nerva-customizer::backdrop{background:rgb(0 0 0 / .78)}.nerva-customizer>header{height:68px;display:flex;align-items:center;justify-content:space-between;padding:12px 24px;border-bottom:1px solid #3a3a40}.nerva-customizer h2{font-size:20px;margin:0;color:inherit}.nerva-customizer button{font:inherit;cursor:pointer;border:1px solid #555;border-radius:10px;min-height:44px;padding:10px 18px;background:#25252b;color:white;touch-action:manipulation}.nerva-customizer button:disabled{opacity:.4;cursor:default}.nerva-customizer .nerva-close{font:30px Arial;padding:0;width:44px;border:0;background:none}.nerva-config-layout{display:grid;grid-template-columns:40% 60%;height:calc(100% - 68px)}.nerva-visual{padding:28px;background:radial-gradient(ellipse at center,#303036,#101012 75%);display:flex;flex-direction:column;align-items:center;justify-content:center;min-width:0;overflow:auto}.nerva-visual>div{width:100%;max-width:340px}.nerva-visual svg{width:100%;height:auto;max-height:340px;display:block}.nerva-product-name{font-size:14px;text-align:center;font-weight:600}.nerva-preview-note{color:#aaa;font-size:12px;line-height:1.6}.nerva-visual .nerva-preview-note{text-align:center}.nerva-config-price{font-size:32px;white-space:nowrap}.nerva-options-panel{padding:24px;overflow-y:auto;overscroll-behavior:contain;scrollbar-gutter:stable}.nerva-progress{font-size:13px;text-transform:uppercase;letter-spacing:.08em;color:#aaa;margin:0 0 20px}.nerva-customizer fieldset{border:0;padding:0;margin:0 0 24px;min-width:0}.nerva-customizer legend{font-size:16px;font-weight:600;margin-bottom:12px}.nerva-customizer label:not(.nerva-option){display:block;margin:12px 0}.nerva-customizer input:not([type=radio]):not([type=checkbox]),.nerva-customizer textarea{box-sizing:border-box;display:block;width:100%;min-height:46px;padding:12px;margin-top:8px;border:1px solid #555;border-radius:9px;font:16px Arial;background:#242429;color:white}.nerva-option-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.nerva-option{position:relative;cursor:pointer}.nerva-option input{position:absolute;width:1px;height:1px;opacity:0}.nerva-option span{display:flex;flex-direction:column;justify-content:center;min-height:74px;box-sizing:border-box;padding:12px;border:1px solid #555;border-radius:10px;font-size:14px}.nerva-option small{font-size:12px;color:#bcbcc6;margin-top:5px}.nerva-option input:checked+span{border-color:white;background:#303038;box-shadow:inset 0 0 0 1px white}.nerva-option input:disabled+span{opacity:.45;cursor:not-allowed}.nerva-option input:focus-visible+span,.nerva-customizer button:focus-visible{outline:3px solid #83b6ff;outline-offset:2px}.nerva-native-summary>div{display:flex;justify-content:space-between;gap:16px;padding:10px 0;border-bottom:1px solid #333;font-size:13px}.nerva-native-summary dt{color:#aaa}.nerva-native-summary dd{margin:0;max-width:60%;text-align:right}.nerva-config-actions{position:sticky;bottom:-24px;background:#141416;padding:16px 0;display:flex;justify-content:space-between;gap:12px;border-top:1px solid #333}.nerva-config-actions button[data-next],.nerva-config-actions button[data-add]{background:#f4f4f4;color:#111;font-weight:bold}.nerva-customizer [hidden]{display:none!important}.nerva-compatibility{font-size:12px;line-height:1.7}.nerva-compatibility input{margin-right:10px}.nerva-config-status{color:#ffb6b6}.nerva-badge-preview{--badge-color:#303036;--letter-color:#eee;aspect-ratio:1;max-width:240px!important;border:16px solid #34343a;border-radius:50%;background:conic-gradient(var(--badge-color) 0 25%,#111 25% 50%,var(--badge-color) 50% 75%,#111 75%);color:var(--letter-color);display:grid;place-items:center;font-size:28px;letter-spacing:5px;text-shadow:0 2px 4px black}
@media(max-width:749px){.nerva-customizer{width:100%;height:100dvh;border:0;border-radius:0}.nerva-customizer>header{height:56px;padding:8px 16px}.nerva-customizer h2{font-size:16px}.nerva-config-layout{display:flex;flex-direction:column;height:calc(100% - 56px)}.nerva-visual{flex:none;display:grid;grid-template-columns:110px 1fr;gap:4px 14px;padding:10px 16px;overflow:visible}.nerva-visual>div{grid-column:1;grid-row:1/4;max-width:110px}.nerva-product-name{grid-column:2;font-size:11px;text-align:left;margin:0}.nerva-visual .nerva-preview-note{grid-column:2;font-size:10px;text-align:left;line-height:1.35;margin:0}.nerva-config-price{grid-column:2;font-size:24px}.nerva-options-panel{padding:16px;flex:1;min-height:0}.nerva-config-actions{bottom:-16px;padding-bottom:max(16px,env(safe-area-inset-bottom))}.nerva-badge-preview{border-width:8px;font-size:14px}.nerva-option span{font-size:13px}}

/* Product photographs: preserve full image, no synthetic preview. */
.nerva-customizer,.nerva-customizer *{box-sizing:border-box}
.nerva-photo-gallery{max-width:100%!important;min-width:0}
.nerva-customizer .nerva-photo-frame{position:relative;display:block;width:100%;padding:0;overflow:hidden;border:1px solid #45454d;border-radius:14px;background:#101012;aspect-ratio:1;cursor:zoom-in}
.nerva-photo-frame>img{display:block;width:100%;height:100%;object-fit:contain}
.nerva-photo-zoom-label{position:absolute;right:10px;bottom:10px;padding:4px 9px;border-radius:6px;background:#111c;color:white;font-size:11px}
.nerva-photo-thumbs{display:flex;gap:8px;overflow-x:auto;padding:10px 2px;scrollbar-width:thin;max-width:100%;overscroll-behavior-x:contain}
.nerva-customizer .nerva-photo-thumbs button{padding:2px;width:54px;height:54px;min-height:54px;flex:0 0 54px;overflow:hidden;background:#111;border:1px solid #555;border-radius:8px}
.nerva-photo-thumbs img{width:100%;height:100%;object-fit:cover;border-radius:5px;display:block}
.nerva-customizer .nerva-photo-thumbs button[aria-pressed=true]{border-color:white;box-shadow:0 0 0 1px white}
.nerva-photo-counter{font-size:11px;color:#aaa;text-align:center;margin:0}
.nerva-photo-lightbox{width:min(960px,96vw);height:min(920px,96dvh);max-width:96vw;max-height:96dvh;padding:16px;border:1px solid #555;border-radius:16px;background:#111;color:white;overflow:hidden}
.nerva-photo-lightbox::backdrop{background:#000e}
.nerva-photo-lightbox>img{width:100%;height:calc(100% - 64px);object-fit:contain;display:block}
.nerva-photo-navigation{height:64px;display:flex;align-items:center;justify-content:center;gap:20px}
.nerva-option .nerva-color-swatch{display:block;width:22px;height:22px;border-radius:50%;border:1px solid #777;margin-bottom:6px}
@media(max-width:749px){
 .nerva-visual{grid-template-columns:140px minmax(0,1fr);gap:5px 12px;padding:10px 16px;align-items:center}
 .nerva-visual>.nerva-photo-gallery{grid-row:1/4;max-width:140px!important}
 .nerva-photo-frame{max-height:140px}
 .nerva-customizer .nerva-photo-thumbs button{width:44px;height:44px;min-height:44px;flex-basis:44px}
 .nerva-photo-thumbs{gap:4px;padding:6px 1px}
 .nerva-photo-counter{font-size:10px}
 .nerva-visual .nerva-preview-note{font-size:10px;line-height:1.45}
 .nerva-photo-zoom-label{font-size:9px;right:5px;bottom:5px;padding:2px 5px}
 .nerva-photo-lightbox{padding:8px}
 .nerva-product-name{overflow-wrap:anywhere}
}
@media(max-height:650px) and (max-width:749px){.nerva-visual{grid-template-columns:92px minmax(0,1fr)}.nerva-visual>.nerva-photo-gallery{max-width:92px!important}.nerva-photo-thumbs{display:none}.nerva-photo-frame{max-height:92px}}

/* Reference layout: product stage, single question, fixed navigation. */
.nerva-customizer{width:100vw;height:100dvh;border:0;border-radius:0;background:#000;color:#fff;max-width:100vw;font-family:Poppins,Arial,sans-serif}
.nerva-customizer>header{height:48px;padding:0 24px;border-bottom:1px solid #181818;background:#080808}
.nerva-customizer h2{font-size:12px;font-weight:500;letter-spacing:.12em;text-transform:uppercase}
.nerva-config-layout{height:calc(100% - 48px);grid-template-columns:minmax(0,1fr) 400px}
.nerva-visual{background:#000;padding:24px 32px;position:relative;display:flex;justify-content:center;gap:8px}
.nerva-product-name{align-self:stretch;text-align:left;font-size:14px;margin:0;order:-2}
.nerva-config-price{align-self:flex-start;order:-1;font-size:17px;font-weight:500}
.nerva-visual>.nerva-photo-gallery{width:100%;max-width:650px!important;min-height:0;flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center}
.nerva-customizer .nerva-photo-frame{width:auto;height:auto;aspect-ratio:1;max-width:100%;max-height:calc(100% - 80px);min-height:0;border:0;border-radius:0;background:#000}
.nerva-photo-frame>img{height:100%;width:100%;object-fit:contain}
.nerva-photo-thumbs{flex-shrink:0}.nerva-photo-counter{display:none}
.nerva-visual .nerva-preview-note{font-size:10px;text-align:center;margin:0;flex-shrink:0;color:#888}
.nerva-options-panel{position:relative;display:flex;flex-direction:column;padding:28px 20px 0;background:#000;border-left:1px solid #222;scrollbar-gutter:auto}
.nerva-options-panel>section:not([hidden]){flex:1}
.nerva-customizer legend{font-size:16px;font-weight:400;text-align:center;width:100%;padding:12px 0;margin-bottom:20px}
.nerva-option-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
.nerva-option span{border-radius:2px;min-height:105px;align-items:center;text-align:center;background:#000;border:1px solid #252525}
.nerva-option input:checked+span{background:#080808;border-color:#fff;box-shadow:inset 0 0 0 1px #fff}
.nerva-config-actions{position:sticky;bottom:0;flex:none;align-items:center;background:#000;margin-top:20px;min-height:68px;padding:12px 0;gap:8px}
.nerva-config-actions button{min-width:64px;min-height:40px;border:0;border-radius:28px;background:#fff;color:#111;font-size:24px;padding:4px 20px}
.nerva-config-actions button[data-add]{font-size:12px;padding:10px 16px}
.nerva-config-actions .nerva-progress{font-size:12px;letter-spacing:0;margin:0;white-space:nowrap;color:#fff}
.nerva-step-select{width:28px;height:40px;background:#000;color:#fff;border:0;font-size:12px;cursor:pointer}
.nerva-config-status:empty{display:none}
@media(max-width:749px){
.nerva-customizer>header{height:44px;padding:0 16px}.nerva-config-layout{height:calc(100% - 44px);display:flex}
.nerva-visual{height:49%;min-height:200px;max-height:510px;display:flex;gap:2px;padding:10px 16px 6px;flex-shrink:0}
.nerva-product-name{font-size:12px;line-height:1.4;flex-shrink:0}.nerva-config-price{font-size:14px;line-height:1.4}
.nerva-visual>.nerva-photo-gallery{max-width:100%!important;flex:1;min-height:0;width:100%}
.nerva-customizer .nerva-photo-frame{max-height:100%;max-width:100%;height:100%;width:auto;aspect-ratio:1}
.nerva-photo-thumbs{display:none}.nerva-visual .nerva-preview-note{font-size:9px;line-height:1.3}
.nerva-options-panel{padding:0 16px;min-height:0;border:0;border-top:1px solid #181818;flex:1}
.nerva-customizer legend{font-size:14px;padding:14px 0;margin:0 0 8px}.nerva-option span{min-height:90px;font-size:12px}
.nerva-config-actions{margin-top:8px;padding-bottom:max(12px,env(safe-area-inset-bottom));bottom:0}
.nerva-options-panel>section:not([hidden]){flex:1}.nerva-options-panel fieldset{margin:0 0 10px}
}

@media(max-width:749px) and (min-height:740px){.nerva-visual{height:62%;max-height:none}}
.nerva-options-panel{overflow:hidden}.nerva-options-panel>section:not([hidden]){min-height:0;overflow-y:auto;overscroll-behavior:contain}.nerva-config-actions{flex-shrink:0;position:relative;bottom:auto!important}.nerva-config-actions .nerva-progress{flex:1;text-align:center}.nerva-customizer .nerva-config-actions button{flex-shrink:0}.nerva-config-actions .nerva-step-select{flex-shrink:0}

.nerva-layer-stage{position:relative;width:100%;height:100%;aspect-ratio:1;background:radial-gradient(ellipse,#29292d 0%,#101012 65%,#000 100%)}.nerva-layer-stage img{position:absolute;inset:0;display:block;width:100%;height:100%;object-fit:contain}.nerva-photo-frame:has(.nerva-layer-stage){width:min(100%,65vh)!important;height:auto!important;aspect-ratio:1}.nerva-photo-lightbox>.nerva-layer-stage{height:calc(100% - 64px);width:100%;background:#111}.nerva-layer-stage[aria-busy=true]{opacity:.65}.nerva-layer-stage img{pointer-events:none}@media(max-width:749px){.nerva-photo-frame:has(.nerva-layer-stage){width:auto!important;height:100%!important;max-width:100%;aspect-ratio:1}}