/* ============================================================
   Interactive experiences: material selector, machine explorer, journey
   ============================================================ */

/* ---- Material selector ---- */
.matsel-wrap{display:grid;grid-template-columns:1fr 1fr;gap:26px;align-items:start}
.matsel{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:30px}
.matsel .q{margin-bottom:24px}
.matsel .q-label{font-family:'Space Grotesk';font-weight:600;font-size:1.05rem;margin-bottom:12px;display:flex;gap:10px;align-items:baseline}
.matsel .q-label .qn{font-family:'IBM Plex Mono';font-size:.8rem;color:var(--molten-ink)}
.matsel-opts{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.matsel-opt{
  text-align:left;background:var(--paper);border:1.5px solid var(--line-strong);border-radius:var(--radius-sm);
  padding:14px 15px;cursor:pointer;transition:.15s;font-family:inherit;
}
.matsel-opt .ot{font-family:'Space Grotesk';font-weight:600;font-size:.96rem;display:block;color:var(--ink)}
.matsel-opt .od{font-size:.82rem;color:var(--muted);margin-top:3px;display:block}
.matsel-opt:hover{border-color:var(--molten);background:#fff}
.matsel-opt.sel{border-color:var(--molten);background:var(--molten-wash);box-shadow:0 0 0 2px var(--molten-wash)}
.matsel-reset{margin-top:6px;background:none;border:none;color:var(--muted);font-family:'IBM Plex Mono';font-size:.78rem;cursor:pointer;text-decoration:underline;padding:4px}
.matsel-reset:hover{color:var(--ink)}

#matresult{min-height:230px;display:flex}
.matres-empty{align-self:center;text-align:center;color:var(--muted);font-size:.86rem;padding:30px;background:var(--surface);border:1px dashed var(--line-strong);border-radius:var(--radius-lg);width:100%}
.reccard{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:30px;width:100%;position:relative;overflow:hidden;animation:pop .3s var(--ease)}
.reccard::before{content:"";position:absolute;top:0;left:0;right:0;height:5px}
.reccard.grey::before{background:var(--molten)}
.reccard.ductile::before{background:var(--molten)}
@keyframes pop{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.rec-title{font-family:'Space Grotesk';font-weight:700;font-size:1.55rem;letter-spacing:-.02em}
.rec-grades{color:var(--molten-ink);font-size:.9rem;margin:6px 0 16px}
.reccard p{font-size:.96rem;margin-bottom:18px}
.rec-use{background:var(--surface);border-radius:var(--radius-sm);padding:12px 14px;font-size:.92rem;color:var(--ink)}
.rec-use .mono{display:block;font-size:.68rem;color:var(--muted);letter-spacing:.1em;margin-bottom:4px}

/* ---- Machine explorer ---- */
.mx-wrap{display:grid;grid-template-columns:1.3fr 1fr;gap:30px;align-items:center}
.mx-stage{background:var(--night);border-radius:var(--radius-lg);padding:30px;position:relative;overflow:hidden}
.mx-stage svg{width:100%;height:auto;display:block}
.mx-hot{cursor:pointer}
.mx-hot circle.pt{fill:var(--molten);stroke:#fff;stroke-width:2;transition:.2s}
.mx-hot circle.pulse{fill:var(--molten);opacity:.35;animation:mxpulse 2.2s ease-out infinite}
.mx-hot:hover circle.pt,.mx-hot.on circle.pt{r:9;fill:#fff;stroke:var(--molten);stroke-width:3}
@keyframes mxpulse{0%{r:8;opacity:.5}100%{r:20;opacity:0}}
.mx-info{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:30px;min-height:220px;display:flex;flex-direction:column;justify-content:center}
.mx-info .mx-hint{color:var(--muted);font-family:'IBM Plex Mono';font-size:.84rem;text-align:center}
.mx-info.show .mx-hint{display:none}
.mx-name{font-family:'Space Grotesk';font-weight:700;font-size:1.4rem;margin-bottom:12px;opacity:0}
.mx-desc{font-size:.98rem;color:var(--ink-soft);opacity:0}
.mx-info.show .mx-name,.mx-info.show .mx-desc{opacity:1;animation:pop .3s var(--ease)}
.mx-legend{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.mx-legend button{
  font-family:'IBM Plex Mono';font-size:.76rem;background:var(--night-2);color:rgba(255,255,255,.75);
  border:1px solid rgba(255,255,255,.14);border-radius:100px;padding:7px 13px;cursor:pointer;transition:.15s;
}
.mx-legend button:hover{background:var(--molten);color:#fff;border-color:var(--molten)}

/* ---- Inside the Foundry journey ---- */
.jx-rail{position:sticky;top:70px;z-index:30;background:rgba(251,250,248,.9);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);padding:14px 0}
.jx-track{display:flex;align-items:center;gap:0;max-width:var(--wrap);margin:0 auto;padding:0 26px;position:relative}
.jx-line{position:absolute;left:26px;right:26px;top:50%;height:2px;background:var(--line-strong);transform:translateY(-50%)}
.jx-fill{position:absolute;left:26px;top:50%;height:2px;background:var(--molten);transform:translateY(-50%);width:0;transition:width .5s var(--ease);max-width:calc(100% - 52px)}
.jx-dot{position:relative;z-index:2;flex:1;display:flex;flex-direction:column;align-items:center;gap:6px;background:none;border:none;cursor:pointer;padding:0}
.jx-dot .d{width:14px;height:14px;border-radius:50%;background:#fff;border:2px solid var(--line-strong);transition:.25s}
.jx-dot.on .d{background:var(--molten);border-color:var(--molten);transform:scale(1.15)}
.jx-dot .lbl{font-family:'IBM Plex Mono';font-size:.62rem;letter-spacing:.03em;color:var(--muted);text-transform:uppercase;white-space:nowrap}
.jx-dot.on .lbl{color:var(--ink)}

.jx-stage{min-height:72vh;display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;padding:40px 0;opacity:.35;transition:opacity .5s var(--ease)}
.jx-stage.in{opacity:1}
.jx-stage .jx-text .n{font-family:'IBM Plex Mono';font-size:.8rem;color:var(--molten-ink);letter-spacing:.1em}
.jx-stage h2{margin:12px 0 14px}
.jx-stage .jx-scene{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);aspect-ratio:4/3;display:grid;place-items:center;overflow:hidden;position:relative}
.jx-stage .jx-scene svg{width:78%;height:auto}
.jx-dual{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:22px}
.jx-dual div{border-radius:var(--radius-sm);padding:14px;font-size:.86rem}
.jx-dual .cast{background:var(--molten-wash);border:1px solid #F1C4BB}
.jx-dual .mach{background:var(--steel-wash);border:1px solid #C4D8EC}
.jx-dual .h{font-family:'IBM Plex Mono';font-size:.66rem;letter-spacing:.08em;text-transform:uppercase;display:block;margin-bottom:5px}
.jx-dual .cast .h{color:var(--molten-ink)}
.jx-dual .mach .h{color:var(--steel-ink)}

/* animated scene bits */
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes pour{0%{transform:translateY(-6px);opacity:0}30%{opacity:1}100%{transform:translateY(30px);opacity:.2}}
@keyframes press{0%,100%{transform:translateY(0)}50%{transform:translateY(10px)}}
@keyframes roll{to{transform:translateX(-40px)}}
.anim-spin{transform-origin:center;animation:spin 5s linear infinite}
.anim-pour rect{animation:pour 1.6s ease-in infinite}
.anim-press{animation:press 2.4s ease-in-out infinite}

@media(max-width:900px){
  .matsel-wrap,.mx-wrap{grid-template-columns:1fr}
  .jx-stage{grid-template-columns:1fr;min-height:auto;gap:24px}
  .jx-stage .jx-scene{order:-1}
  .jx-dot .lbl{display:none}
  .mx-legend button{font-size:.72rem}
}