/* ============================================================
   Shell — gate, module chooser, and module switching.
   Owns nothing inside a module; only decides which one is shown.
   ============================================================ */

/* --- module visibility, driven by body[data-view] --- */
#vm-gate,#chooser,#mod-production,#mod-inventory,#mod-admin{display:none}
body[data-view="gate"]       #vm-gate        {display:flex}
body[data-view="chooser"]    #chooser        {display:flex}
body[data-view="production"] #mod-production {display:block}
body[data-view="inventory"]  #mod-inventory  {display:block}

/* --- chooser --- */
#chooser{
  position:fixed;inset:0;z-index:60;background:var(--bg);
  flex-direction:column;align-items:center;justify-content:center;
  gap:34px;padding:32px 24px;overflow:auto;
}
#chooser .ch-brand{display:flex;flex-direction:column;align-items:center;gap:10px}
#chooser .ch-brand img{width:210px;max-width:62vw;height:auto;display:block}
#chooser .ch-sub{
  font-size:10.5px;letter-spacing:3.4px;text-transform:uppercase;
  font-weight:600;color:var(--premium2);
}
.ch-grid{
  display:grid;gap:16px;width:100%;max-width:720px;
  grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
}
.ch-card{
  appearance:none;text-align:left;cursor:pointer;font:inherit;color:inherit;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 24px 22px;display:flex;flex-direction:column;gap:8px;
  transition:border-color .16s,transform .16s,background .16s;
}
.ch-card:hover{border-color:var(--brand);background:#18232b;transform:translateY(-2px)}
.ch-card:focus-visible{outline:2px solid var(--brand2);outline-offset:3px}
.ch-card .ch-ico{
  width:40px;height:40px;border-radius:11px;display:grid;place-items:center;
  font-size:20px;margin-bottom:4px;
  background:var(--bluebg);border:1px solid var(--line);
}
.ch-card.is-inv .ch-ico{background:var(--amberbg)}
.ch-card h2{margin:0;font-size:20px;font-weight:650;letter-spacing:-.01em;color:var(--txt)}
.ch-card p{margin:0;font-size:13.5px;line-height:1.5;color:var(--muted2)}
.ch-card .ch-stat{
  margin-top:6px;font-size:11.5px;letter-spacing:.5px;color:var(--faint);
  font-variant-numeric:tabular-nums;
}
.ch-foot{font-size:11.5px;color:var(--faint);text-align:center}

/* --- "back to chooser" control, injected into each module topbar --- */
.homebtn{
  appearance:none;cursor:pointer;font:inherit;
  background:var(--panel2);border:1px solid var(--line);color:var(--muted);
  border-radius:10px;padding:7px 11px;font-size:13px;line-height:1;
  display:inline-flex;align-items:center;gap:6px;transition:border-color .15s,color .15s;
}
.homebtn:hover{border-color:var(--brand);color:var(--txt)}
.homebtn:focus-visible{outline:2px solid var(--brand2);outline-offset:2px}

@media (prefers-reduced-motion:reduce){*{transition:none!important}}

/* --- module isolation ------------------------------------------------
   production.css sets `body{background:#f2efe8 !important}` on purpose
   (off-white canvas + dark cards, tuned for the shop TV). Every other
   module must therefore paint its own ground rather than inherit that. */
#mod-inventory{background:var(--bg);min-height:100vh}
#chooser{background:var(--bg)}
body[data-view="admin"] #mod-admin{display:block}
.ch-card.is-admin .ch-ico{background:var(--greenbg)}