/* ============================================================
   Pegasus4i — Contents nav system
   Replaces .mast/.snav/.snav-hot/.mnav and the 4-column .ftr-nav.
   Uses tokens already defined in pegasus4i.css (--bg, --surface,
   --text, --body, --dim, --vdim, --amber, --amber2, --ibmi, --teal,
   --mono, --serif, --sans, --border, --border2, --radius).
   Add this file's <link> AFTER pegasus4i.css on every page.
   ============================================================ */

.p4i-nav{ position:sticky; top:0; z-index:1000;
  background:rgba(6,8,14,0.92); backdrop-filter:blur(10px); -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border); }
.p4i-bar{ display:flex; align-items:center; gap:20px; height:58px;
  max-width:var(--container); margin:0 auto; padding:0 var(--gutter); }
.p4i-brand{ font-family:var(--sans); font-size:17px; font-weight:800; letter-spacing:.01em;
  color:var(--text); flex:none; }
.p4i-brand .four{ color:var(--ibmi); }
.p4i-here{ flex:1; text-align:center; font-family:var(--mono); font-size:10px;
  letter-spacing:.18em; text-transform:uppercase; color:var(--dim);
  overflow:hidden; text-overflow:ellipsis; white-space:nowrap; padding:0 12px; }
.p4i-here .sep{ color:var(--vdim); margin:0 8px; }
@media (max-width:1080px){ .p4i-here{ display:none; } }

.p4i-toggle{ font-family:var(--mono); font-size:10px; letter-spacing:.16em; text-transform:uppercase;
  color:var(--amber); background:none; border:1px solid rgba(200,146,42,.4); border-radius:2px;
  padding:8px 15px; cursor:pointer; white-space:nowrap; flex:none; transition:border-color .2s,color .2s; }
.p4i-toggle:hover,.p4i-toggle[aria-expanded="true"]{ border-color:var(--amber); color:var(--amber2); }
.p4i-cta{ font-family:var(--mono); font-size:10px; letter-spacing:.16em; text-transform:uppercase;
  color:var(--amber2); border:1px solid rgba(221,168,60,.4); border-radius:2px;
  padding:8px 15px; white-space:nowrap; flex:none; transition:background .2s; }
.p4i-cta:hover{ background:rgba(221,168,60,.09); }

.p4i-triad{ display:flex; align-items:center; gap:22px; margin:0 auto; flex:none; }
.p4i-triad a{ font-family:var(--sans); font-weight:600; font-size:14px; color:var(--dim);
  letter-spacing:.01em; transition:color .15s; }
.p4i-triad a:hover{ color:var(--text); }
.p4i-scan{ font-family:var(--sans); font-weight:700; font-size:13px; letter-spacing:.01em;
  color:var(--bg); background:var(--teal); border-radius:3px; padding:9px 16px;
  white-space:nowrap; flex:none; transition:opacity .2s; }
.p4i-scan:hover{ opacity:.86; color:var(--bg); }
.p4i-map-link{ font-family:var(--mono); font-size:10px; letter-spacing:.16em; text-transform:uppercase;
  color:var(--dim); white-space:nowrap; flex:none; }
.p4i-map-link:hover{ color:var(--text); }
.p4i-signin{ font-family:var(--mono); font-size:11px; letter-spacing:.1em; text-transform:uppercase; color:var(--dim); white-space:nowrap; flex:none; transition:color .15s; }
.p4i-signin:hover{ color:var(--text); }
@media (max-width:1080px){
  .p4i-triad{ display:none; }
  .p4i-map-link{ display:none; }
}

html{ scroll-behavior:smooth; }
.p4i-panel{ position:absolute; top:100%; left:0; right:0; background:var(--surface);
  border-bottom:1px solid var(--border); max-height:0; overflow:hidden; opacity:0; transform:translateY(-8px);
  transition:max-height .45s cubic-bezier(.4,0,.2,1), opacity .3s ease .05s, transform .35s cubic-bezier(.4,0,.2,1); }
.p4i-panel.open{ max-height:calc(100vh - 58px); overflow-y:auto; opacity:1; transform:translateY(0);
  -webkit-overflow-scrolling:touch; scrollbar-width:thin; scrollbar-color:rgba(200,146,42,.35) transparent; }
.p4i-panel.open::-webkit-scrollbar{ width:8px; }
.p4i-panel.open::-webkit-scrollbar-thumb{ background:rgba(200,146,42,.35); border-radius:4px; }
.p4i-panel.open::-webkit-scrollbar-track{ background:transparent; }
@media(prefers-reduced-motion:reduce){ html{ scroll-behavior:auto; } }
.p4i-panel-inner{ max-width:760px; margin:0 auto; padding:30px var(--gutter) 36px; columns:1; }

.p4i-act{ font-family:var(--mono); font-size:9px; letter-spacing:.22em; text-transform:uppercase;
  color:var(--dim); margin:22px 0 12px; display:flex; align-items:baseline; gap:10px; break-inside:avoid; }
.p4i-act:first-child{ margin-top:0; }
.p4i-act .n{ color:var(--amber); }
.p4i-act .desc{ font-family:var(--serif); font-style:normal; font-size:12px; letter-spacing:.03em;
  text-transform:none; color:var(--vdim); }

.p4i-item{ position:relative; display:block; padding:8px 6px 8px 32px; border-radius:6px;
  font-family:var(--sans); font-weight:600; font-size:15px; color:var(--text);
  transition:color .15s, background .15s; break-inside:avoid; }
.p4i-item:hover{ background:rgba(255,255,255,0.03); color:var(--amber2); }
.p4i-item .sub{ display:block; font-family:var(--serif); font-style:italic; font-weight:400;
  font-size:12.5px; color:var(--dim); margin-top:2px; }
.p4i-item::before{ content:attr(data-n); position:absolute; left:0; top:8px;
  width:20px; height:20px; border-radius:50%; background:var(--bg);
  border:1px solid rgba(255,255,255,.22); display:flex; align-items:center; justify-content:center;
  font-family:var(--mono); font-size:8px; color:var(--dim); }
.p4i-item.ext::after{ content:' ↗'; color:var(--vdim); font-family:var(--mono); font-size:10px; }
.p4i-item.ax-h::before{ border-color:var(--amber); color:var(--amber); }
.p4i-item.ax-o::before{ border-color:var(--ibmi); color:var(--ibmi); }
.p4i-item.ax-t::before{ border-color:var(--teal); color:var(--teal); }
.p4i-item.is-current{ color:var(--amber); }
.p4i-item.is-current::before{ border-color:var(--amber2); color:var(--amber2);
  box-shadow:0 0 0 3px rgba(200,146,42,.14); }

.p4i-util{ column-span:all; display:flex; flex-wrap:wrap; gap:22px; margin:28px 0 0;
  padding:16px 0 0; border-top:1px solid var(--border); }
.p4i-util a{ font-family:var(--mono); font-size:9px; letter-spacing:.14em; text-transform:uppercase; color:var(--dim); }
.p4i-util a:hover{ color:var(--amber); }
.p4i-util .ext::after{ content:' ↗'; color:var(--vdim); }

.p4i-scrim{ position:fixed; top:58px; left:0; right:0; bottom:0; background:rgba(6,8,14,.6);
  opacity:0; pointer-events:none; transition:opacity .3s; z-index:900; }
.p4i-scrim.open{ opacity:1; pointer-events:auto; }

/* ── progression footer (auto-built, inserted before .ftr) ── */
.p4i-prog{ max-width:var(--container); margin:70px auto 0; padding:0 var(--gutter); }
.p4i-prog-rule{ height:1px; background:var(--border); margin-bottom:26px; }
.p4i-prog-descent{ display:block; margin-bottom:22px; padding:15px 20px;
  border:1px solid rgba(200,146,42,.4); background:rgba(200,146,42,.09); border-radius:var(--radius);
  transition:border-color .2s, background .2s; }
.p4i-prog-descent:hover{ border-color:var(--amber); background:rgba(200,146,42,.14); }
.p4i-prog-descent .lbl{ font-family:var(--mono); font-size:9px; letter-spacing:.22em;
  text-transform:uppercase; color:var(--amber); margin-bottom:6px; }
.p4i-prog-descent .tier{ font-family:var(--serif); font-style:italic; font-size:18px; color:var(--text); }
.p4i-prog-row{ display:grid; grid-template-columns:1fr auto 1fr; gap:24px; align-items:start; }
.p4i-prog-a{ display:block; min-width:0; }
.p4i-prog-a.next{ text-align:right; }
.p4i-prog-dir{ font-family:var(--mono); font-size:9px; letter-spacing:.2em; text-transform:uppercase; color:var(--dim); margin-bottom:8px; }
.p4i-prog-a:hover .p4i-prog-dir{ color:var(--amber); }
.p4i-prog-t{ font-family:var(--sans); font-weight:600; font-size:18px; color:var(--body); transition:color .2s; }
.p4i-prog-a:hover .p4i-prog-t{ color:var(--amber2); }
.p4i-prog-all{ align-self:center; font-family:var(--mono); font-size:9px; letter-spacing:.16em;
  text-transform:uppercase; color:var(--dim); white-space:nowrap; }
.p4i-prog-all:hover{ color:var(--amber); }
.p4i-prog-end{ text-align:center; font-family:var(--serif); font-style:italic; font-size:16px; color:var(--vdim); margin-bottom:22px; }
@media (max-width:640px){
  .p4i-prog-row{ grid-template-columns:1fr; gap:20px; }
  .p4i-prog-a.next{ text-align:left; }
  .p4i-prog-all{ order:3; justify-self:start; }
}

/* ── shrunk footer row (replaces the 4-column .ftr-nav) ── */
.p4i-foot{ max-width:var(--container); margin:0 auto; padding:30px var(--gutter) 6px;
  display:flex; flex-wrap:wrap; align-items:center; gap:8px 20px; border-top:1px solid var(--border); }
.p4i-foot a{ font-family:var(--mono); font-size:10px; letter-spacing:.14em; text-transform:uppercase; color:var(--dim); }
.p4i-foot a:hover{ color:var(--text); }
.p4i-foot .div{ width:1px; height:11px; background:var(--border2); }
.p4i-foot .ext::after{ content:' ↗'; color:var(--vdim); }
.p4i-foot .spacer{ flex:1; }

/* ── map view (pegasus4i-sitemap.html only) ── */
.p4i-map{ position:relative; padding:10px 0; }
.p4i-map-spine{ position:absolute; left:39px; top:0; bottom:56px; width:2px;
  background:linear-gradient(to bottom, transparent, var(--border2) 4%, var(--border2) 96%, transparent); }
.p4i-map-row{ display:flex; gap:28px; align-items:flex-start; position:relative; }
.p4i-map-pin{ width:50px; flex:none; display:flex; justify-content:center; }
.p4i-map-pin span{ width:50px; height:50px; border-radius:50%; background:var(--surface);
  border:1.5px solid rgba(200,146,42,.5); display:flex; align-items:center; justify-content:center;
  font-family:var(--mono); font-size:13px; color:var(--amber); }
.p4i-map-name{ font-family:var(--sans); font-weight:700; font-size:22px; letter-spacing:-.02em; color:var(--text); }
.p4i-map-desc{ font-family:var(--serif); font-style:italic; font-size:15px; color:var(--dim); margin-top:6px; max-width:52ch; }
.p4i-map-stations{ display:flex; flex-wrap:wrap; gap:10px; margin-top:18px; }
.p4i-map-st{ display:flex; gap:11px; align-items:flex-start; padding:13px 16px; min-width:220px; max-width:290px; flex:1;
  background:var(--surface); border:1px solid var(--border2); border-radius:10px; transition:border-color .18s, background .18s; }
.p4i-map-st:hover{ border-color:rgba(200,146,42,.45); background:var(--surface2); }
.p4i-map-descent{ margin-left:78px; padding:36px 0; font-family:var(--mono); font-size:10px;
  letter-spacing:.2em; text-transform:uppercase; color:var(--vdim); }

/* Small phones (iPhone SE and narrower): the bar holds brand + workspace button only; sign-in lives on the workspace page. */
@media (max-width:380px){ .p4i-signin{ display:none; } }

/* Phone width: keep the bar inside the screen (Contact lives in the menu and footer) */
@media (max-width:640px){
  .p4i-bar{ gap:12px; }
  .p4i-cta{ display:none; }
  .p4i-scan{ font-size:12px; padding:8px 12px; }
  .p4i-signin{ font-size:10px; letter-spacing:.08em; }
}

/* Below 1080px the Why/How/What/Proof triad hides; the Contents button takes its place (Map on the home page) */
.p4i-toggle-m{ display:none; }
@media (max-width:1080px){
  .p4i-toggle-m{ display:inline-block; margin-left:auto; }
  .p4i-map-link-m{ display:inline-block; margin-left:auto; color:var(--amber); border:1px solid rgba(200,146,42,.4);
    border-radius:2px; padding:8px 15px; white-space:nowrap; flex:none; }
}
@media (max-width:640px){
  .p4i-toggle-m,.p4i-map-link-m{ padding:8px 11px; letter-spacing:.1em; }
  .p4i-signin{ display:none; }
}
/* Smallest phones: Contents collapses to a menu icon so the workspace button still fits */
@media (max-width:380px){
  .p4i-bar{ gap:8px; }
  .p4i-scan{ font-size:11px; padding:8px 10px; }
  .p4i-toggle-m{ font-size:0; letter-spacing:0; padding:6px 10px; line-height:1; }
  .p4i-toggle-m::before{ content:"\2630"; font-size:16px; }
  .p4i-map-link-m{ padding:8px 9px; }
  .p4i-map-st{ min-width:0; }
}