/* Rainwolf Product Studio — scoped enhancements for /build/ only. */
.on-build {
  --studio-panel: color-mix(in srgb, var(--surface, #141416) 92%, transparent);
  --studio-panel-strong: color-mix(in srgb, var(--surface-2, #1a1a1d) 96%, transparent);
  --studio-border: color-mix(in srgb, var(--line, #2a2a2e) 86%, transparent);
  --studio-muted: var(--text-2, #a0a0a6);
}
.on-build .phead {
  min-height: 0;
  padding: clamp(7.25rem, 10vw, 9.25rem) 0 clamp(2.25rem, 4vw, 3.75rem);
  background: radial-gradient(circle at 78% 0%, color-mix(in srgb, var(--accent) 12%, transparent), transparent 31rem), var(--bg);
}
.on-build .phead .ph { opacity: .18; mask-image: linear-gradient(to left, #000 0%, transparent 72%); }
.on-build .phead__content { position: relative; max-width: 1280px; }
.on-build .phead .display { max-width: 780px; font-size: clamp(3rem, 7vw, 6.6rem); line-height: .92; letter-spacing: -.035em; }
.on-build .phead .lead { max-width: 690px; margin-top: 1.25rem; font-size: clamp(1rem, 1.4vw, 1.16rem); }
.on-build .section:has(#cfgRoot) {
  padding-top: clamp(1.6rem, 3vw, 3rem);
  background: linear-gradient(180deg, color-mix(in srgb, var(--accent) 3%, transparent), transparent 24rem), var(--bg);
}
.on-build .section:has(#cfgRoot) > .wrap { max-width: 1380px; }
.build-valuebar { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; margin-bottom: 1rem; overflow: hidden; border: 1px solid var(--studio-border); background: var(--studio-border); }
.build-value { display: flex; align-items: center; gap: .8rem; min-height: 58px; padding: .8rem 1rem; background: var(--studio-panel); color: var(--studio-muted); font-size: .84rem; }
.build-value svg { width: 19px; flex: 0 0 19px; color: var(--accent); }
.build-value strong { display: block; margin-bottom: .1rem; color: var(--text); font-size: .88rem; font-weight: 600; }
.build-layout { display: grid; grid-template-columns: 280px minmax(0, 1fr); gap: 1rem; align-items: start; }
.build-guide { position: sticky; top: 92px; overflow: hidden; border: 1px solid var(--studio-border); background: var(--studio-panel); }
.build-guide__top { padding: 1.35rem 1.25rem 1rem; border-bottom: 1px solid var(--studio-border); }
.build-guide__eyebrow { display: block; margin-bottom: .55rem; color: var(--accent); font-family: 'IBM Plex Mono', monospace; font-size: .68rem; font-weight: 500; letter-spacing: .15em; text-transform: uppercase; }
.build-guide__title { margin: 0; color: var(--text); font-size: 1.04rem; font-weight: 600; }
.build-guide__steps { display: grid; margin: 0; padding: .55rem; list-style: none; }
.build-guide__step { display: grid; grid-template-columns: 30px minmax(0, 1fr) 16px; gap: .7rem; align-items: center; width: 100%; min-height: 52px; padding: .55rem .65rem; border: 0; background: transparent; color: var(--studio-muted); font: inherit; text-align: left; transition: background .18s ease, color .18s ease; }
button.build-guide__step:not(:disabled) { cursor: pointer; }
button.build-guide__step:not(:disabled):hover { background: color-mix(in srgb, var(--accent) 7%, transparent); }
.build-guide__num { display: grid; place-items: center; width: 30px; height: 30px; border: 1px solid var(--studio-border); border-radius: 50%; font-family: 'IBM Plex Mono', monospace; font-size: .7rem; }
.build-guide__label { overflow: hidden; font-size: .83rem; font-weight: 500; text-overflow: ellipsis; white-space: nowrap; }
.build-guide__state { color: transparent; font-size: .9rem; }
.build-guide__step.is-current { background: color-mix(in srgb, var(--accent) 9%, transparent); color: var(--text); }
.build-guide__step.is-current .build-guide__num { border-color: var(--accent); background: var(--accent); color: #0b0b0c; font-weight: 700; }
.build-guide__step.is-complete { color: var(--text); }
.build-guide__step.is-complete .build-guide__num { border-color: color-mix(in srgb, var(--accent) 60%, var(--studio-border)); }
.build-guide__step.is-complete .build-guide__state { color: var(--accent); }
.build-guide__help { margin: .4rem .9rem .9rem; padding: .9rem; border: 1px solid var(--studio-border); background: color-mix(in srgb, var(--bg) 55%, transparent); color: var(--studio-muted); font-size: .75rem; line-height: 1.55; }
.build-guide__help a { color: var(--text); text-decoration-color: var(--accent); text-underline-offset: 3px; }
.on-build .cfg { min-width: 0; overflow: visible; border: 1px solid var(--studio-border); background: var(--studio-panel); box-shadow: 0 24px 70px rgba(0, 0, 0, .16); }
.on-build .cfg__bar { height: 4px; background: color-mix(in srgb, var(--studio-border) 82%, transparent); }
.on-build .cfg__fill { box-shadow: 0 0 22px color-mix(in srgb, var(--accent) 40%, transparent); }
.on-build .cfg__meta { padding: 1rem clamp(1rem, 3vw, 2rem); border-bottom: 1px solid var(--studio-border); }
.on-build .cfg__step { padding: clamp(1.25rem, 3vw, 2.5rem); }
.on-build .cfg__h { max-width: 730px; margin-bottom: clamp(1.4rem, 3vw, 2.25rem); }
.on-build .cfg__h .h2 { font-size: clamp(1.8rem, 4vw, 3.2rem); }
.on-build .cfg__hint { max-width: 660px; line-height: 1.6; }
.on-build .cfg__nav { position: sticky; z-index: 12; bottom: 0; display: grid; grid-template-columns: auto minmax(180px, auto); justify-content: space-between; gap: 1rem; padding: 1rem clamp(1rem, 3vw, 2rem); border-top: 1px solid var(--studio-border); background: color-mix(in srgb, var(--bg) 93%, transparent); backdrop-filter: blur(16px); }
.on-build .cfg__nav .btn { min-height: 48px; }
.on-build .cfgpick { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .75rem; }
.on-build .cfgp { position: relative; display: grid; grid-template-columns: 74px minmax(0, 1fr) 28px; gap: .85rem; align-items: center; min-height: 92px; padding: .6rem .75rem .6rem .6rem; overflow: hidden; text-align: left; }
.cfgp__media { width: 74px; height: 74px; overflow: hidden; border: 1px solid var(--studio-border); background: #f4f4f4; }
.cfgp__media img { width: 100%; height: 100%; object-fit: contain; }
.on-build .cfgp__n { line-height: 1.25; }
.on-build .cfgp__c { margin-top: .35rem; }
.on-build .pcfg__f--models > label { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.model-help { color: var(--studio-muted); font-size: .72rem; font-weight: 400; letter-spacing: 0; text-transform: none; }
.on-build .model-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .85rem; }
.on-build .model-card { position: relative; display: flex; min-width: 0; min-height: 320px; padding: 0; overflow: hidden; border: 1px solid var(--studio-border); border-radius: 0; background: var(--studio-panel-strong); color: var(--text); text-align: left; flex-direction: column; transition: border-color .18s ease, transform .18s ease, box-shadow .18s ease; }
.on-build .model-card:hover { transform: translateY(-2px); border-color: color-mix(in srgb, var(--accent) 48%, var(--studio-border)); }
.on-build .model-card.is-sel { border-color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent), 0 14px 38px color-mix(in srgb, var(--accent) 8%, transparent); }
.model-card__media { position: relative; display: block; width: 100%; aspect-ratio: 4 / 3; overflow: hidden; background: #f3f3f1; }
.model-card__media img { width: 100%; height: 100%; object-fit: contain; transition: transform .28s ease; }
.model-card:hover .model-card__media img { transform: scale(1.025); }
.model-card__body { display: grid; gap: .42rem; padding: 1rem; }
.model-card__top { display: flex; align-items: baseline; justify-content: space-between; gap: .7rem; }
.model-card__name { color: var(--text); font-size: 1rem; font-weight: 600; }
.model-card__code { color: var(--accent); font-family: 'IBM Plex Mono', monospace; font-size: .67rem; letter-spacing: .05em; }
.model-card__desc { color: var(--studio-muted); font-size: .77rem; line-height: 1.5; }
.model-card__select { position: absolute; top: .7rem; right: .7rem; display: grid; place-items: center; width: 30px; height: 30px; border: 1px solid rgba(0,0,0,.16); border-radius: 50%; background: rgba(255,255,255,.9); color: transparent; }
.model-card.is-sel .model-card__select { background: var(--accent); color: #0b0b0c; }
.model-card__select svg { width: 16px; }
.on-build .pcfg { border-color: var(--studio-border); background: color-mix(in srgb, var(--studio-panel-strong) 92%, transparent); }
.on-build .pcfg > summary { min-height: 72px; }
.on-build .pcfg__b { padding: clamp(1rem, 2.5vw, 2rem); }
.on-build .pcfg__f { padding-top: 1.5rem; }
.on-build .pcfg__f:first-child { padding-top: 0; }
.on-build #cfgBody.is-review-step { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.on-build #cfgBody.is-review-step .cfgfield { margin: 0; }
.on-build #cfgBody.is-review-step .psub { grid-column: 1 / -1; }
@media (max-width: 1080px) {
  .build-layout { grid-template-columns: 230px minmax(0, 1fr); }
  .on-build .cfgpick, .on-build .model-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 820px) {
  .on-build .phead { padding-top: 6.6rem; padding-bottom: 1.7rem; }
  .on-build .phead .ph { display: none; }
  .on-build .phead .display { font-size: clamp(2.8rem, 14vw, 4.8rem); }
  .build-valuebar { grid-template-columns: 1fr; }
  .build-value { min-height: 50px; }
  .build-layout { display: block; }
  .build-guide { position: static; margin-bottom: .75rem; }
  .build-guide__top, .build-guide__help { display: none; }
  .build-guide__steps { display: flex; gap: .35rem; padding: .65rem; overflow-x: auto; scrollbar-width: none; }
  .build-guide__steps::-webkit-scrollbar { display: none; }
  .build-guide__step { grid-template-columns: 30px; flex: 0 0 30px; min-height: 30px; padding: 0; }
  .build-guide__label, .build-guide__state { display: none; }
  .on-build .cfg__meta { display: flex; }
  .on-build .cfg__step { padding: 1.2rem 1rem 1.6rem; }
  .on-build .cfg__nav { padding: .8rem; }
  .on-build .cfgpick, .on-build .model-grid { grid-template-columns: 1fr; }
  .on-build #cfgBody.is-review-step { grid-template-columns: 1fr; }
  .on-build .model-card { min-height: 0; display: grid; grid-template-columns: 118px minmax(0, 1fr); }
  .model-card__media { height: 100%; min-height: 144px; aspect-ratio: auto; }
  .model-card__body { align-content: center; padding: .9rem; }
  .model-card__top { display: grid; gap: .25rem; }
}
@media (max-width: 480px) {
  .on-build .phead .lead { font-size: .96rem; }
  .build-valuebar { display: none; }
  .on-build .section:has(#cfgRoot) { padding-top: .7rem; }
  .on-build .section:has(#cfgRoot) > .wrap { padding-inline: .55rem; }
  .on-build .cfgp { grid-template-columns: 64px minmax(0, 1fr) 26px; min-height: 80px; }
  .cfgp__media { width: 64px; height: 64px; }
  .on-build .model-card { grid-template-columns: 102px minmax(0, 1fr); }
  .model-card__desc { font-size: .72rem; }
  .on-build .cfg__nav .btn { padding-inline: 1rem; }
}
@media (prefers-reduced-motion: reduce) { .on-build .model-card, .model-card__media img { transition: none; } }