/* ---------- SITE HEADER (every page) + INDEX PAGE ---------- */
.sitebar{
  position:sticky;top:0;z-index:10;
  background:rgba(13,15,18,.92);
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
}
.sitebar-in{
  max-width:1080px;margin:0 auto;padding:0 22px;height:48px;
  display:flex;align-items:center;gap:22px;
}
.sitebar .brand{
  font-family:var(--disp);font-weight:700;font-size:15px;letter-spacing:.6px;
  text-transform:uppercase;color:var(--ink);text-decoration:none;white-space:nowrap;
  display:flex;align-items:center;gap:9px;
}
.sitebar .brand span{color:var(--amber)}
.sitebar .brand::before{content:"";width:9px;height:9px;background:var(--amber);transform:rotate(45deg)}
/* nav: system links scroll sideways on narrow screens; the Appendices
   dropdown sits outside that scroller so its menu isn't clipped */
.sitebar nav{display:flex;align-items:center;gap:4px;margin-left:auto;min-width:0}
.sitebar .navscroll{display:flex;gap:4px;min-width:0;overflow-x:auto;scrollbar-width:none}
.sitebar .navscroll::-webkit-scrollbar{display:none}
.sitebar nav a,.sitebar .navdrop summary{
  font-family:var(--mono);font-size:11.5px;letter-spacing:.8px;text-transform:uppercase;
  color:var(--muted);text-decoration:none;white-space:nowrap;
  padding:6px 9px;border-radius:6px;
}
.sitebar nav a:hover,.sitebar .navdrop summary:hover{color:var(--ink);background:rgba(255,255,255,.05)}
.sitebar nav a[aria-current="page"]{color:var(--amber);background:var(--amber-soft)}
.sitebar nav a:focus-visible,.sitebar .navdrop summary:focus-visible{outline:2px solid var(--amber);outline-offset:1px}

.navdrop{position:relative;flex:none}
.navdrop summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:6px;user-select:none}
.navdrop summary::-webkit-details-marker{display:none}
.navdrop summary::after{
  content:"";width:5px;height:5px;margin-top:-3px;
  border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;
  transform:rotate(45deg);transition:transform .15s;
}
.navdrop[open] summary::after{transform:rotate(-135deg);margin-top:3px}
.navdrop[open] summary,.navdrop:has(a[aria-current="page"]) summary{color:var(--amber)}
.navdrop:has(a[aria-current="page"]) summary{background:var(--amber-soft)}
.navdrop .menu{
  position:absolute;right:0;top:calc(100% + 8px);min-width:230px;
  display:flex;flex-direction:column;padding:6px;
  background:var(--panel2);border:1px solid var(--line);border-top:2px solid var(--amber);
  border-radius:8px;box-shadow:0 12px 32px rgba(0,0,0,.5);
}
.sitebar .navdrop .menu a{
  font-family:var(--body);font-size:13.5px;letter-spacing:0;text-transform:none;
  color:var(--ink);padding:8px 10px;
}
.sitebar .navdrop .menu a.all{
  font-family:var(--mono);font-size:11px;letter-spacing:.8px;text-transform:uppercase;color:var(--muted);
  margin-top:4px;padding-top:10px;border-top:1px dashed var(--line);border-radius:0 0 6px 6px;
}

/* index: document cards */
.doclist{display:grid;grid-template-columns:repeat(auto-fill,minmax(310px,1fr));gap:16px}
a.doc{
  display:flex;flex-direction:column;gap:10px;text-decoration:none;color:var(--ink);
  position:relative;transition:border-color .15s,background .15s;
}
a.doc::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--c,var(--amber));border-radius:10px 0 0 10px}
a.doc:hover{border-color:rgba(242,167,59,.45);background:var(--panel2)}
a.doc:focus-visible{outline:2px solid var(--amber);outline-offset:2px}
a.doc h3{margin-bottom:0;align-items:flex-start}
a.doc h3 .t{align-items:baseline}
a.doc .num{font-family:var(--mono);font-size:12px;color:var(--amber);font-weight:600;margin-right:2px}
a.doc .scope{font-size:13.5px;color:var(--muted);line-height:1.5}
a.doc .go{
  margin-top:auto;font-family:var(--mono);font-size:11px;letter-spacing:1px;text-transform:uppercase;
  color:var(--muted2);
}
a.doc:hover .go{color:var(--amber)}

@media(max-width:600px){
  .sitebar-in{padding:0 14px;gap:12px;height:44px}
  .sitebar .brand{font-size:13px}
  .sitebar nav a,.sitebar .navdrop summary{padding:6px 7px;font-size:10.5px}
  .sitebar .navdrop .menu a{font-size:13px}
  .doclist{grid-template-columns:1fr;gap:12px}
}
@media print{
  .sitebar{display:none}
}