/* ============================================================
   Integral Aviation Solutions — Range & Specifications — static styles
   IAS / Head-of-State dark system. Tokens inlined for a single
   light request. No framework, no runtime.
   Fonts are loaded in the document <head> (preconnect + link) so they
   are not render-blocked behind this stylesheet.
   ============================================================ */

:root {
  --ink:#0E0E0F; --ink-900:#121214; --surface:#16161A; --surface-2:#1F1F23;
  --cream:#EDE7DA; --cream-dim:#D2CBBC; --muted:#A39C90; --muted-2:#837C70;
  --gold:#C5A668; --gold-deep:#9C7E45; --gold-bright:#D8BE86; --gold-soft:rgba(197,166,104,0.10);
  --hairline:rgba(197,166,104,0.18); --hairline-strong:rgba(197,166,104,0.34);
  --line:rgba(237,231,218,0.10); --line-strong:rgba(237,231,218,0.20);
  --font-serif:'Cormorant Garamond','Hoefler Text',Georgia,serif;
  --font-sans:'Libre Franklin',-apple-system,BlinkMacSystemFont,'Segoe UI',Helvetica,Arial,sans-serif;
  --font-mono:'IBM Plex Mono',ui-monospace,Menlo,Consolas,monospace;
  --container:1320px; --gutter:clamp(1.25rem,5vw,5rem); --radius:5px;
}

* { box-sizing:border-box; }
html { scroll-behavior:smooth; scroll-padding-top:120px; -webkit-text-size-adjust:100%; }
body { margin:0; background:var(--ink); color:var(--cream); font-family:var(--font-sans); font-weight:400; line-height:1.5; -webkit-font-smoothing:antialiased; }
a { color:inherit; text-decoration:none; }
img { max-width:100%; display:block; }
button { font:inherit; cursor:pointer; }
::selection { background:var(--gold); color:var(--ink); }
*::-webkit-scrollbar { width:9px; height:9px; }
*::-webkit-scrollbar-thumb { background:var(--hairline-strong); border-radius:999px; }
*::-webkit-scrollbar-track { background:transparent; }

.container { width:100%; max-width:var(--container); margin:0 auto; padding-left:var(--gutter); padding-right:var(--gutter); }
.eyebrow { font-family:var(--font-mono); font-size:12px; font-weight:500; letter-spacing:0.14em; text-transform:uppercase; color:var(--muted); margin:0; }
.display { font-family:var(--font-serif); font-weight:400; line-height:1.08; letter-spacing:-0.01em; color:var(--cream); margin:16px 0 0; }
.display em, .em { font-style:italic; color:var(--gold); }
.gold-rule { width:54px; height:1px; background:var(--gold); margin:24px 0 0; }
.lead { font-size:16.5px; line-height:1.65; color:var(--cream-dim); margin:24px 0 0; max-width:640px; }
.muted { color:var(--muted); }
.center { text-align:center; }

/* ---- top network bar ---- */
.topbar { background:var(--ink); border-bottom:1px solid var(--line); }
.topbar .container { display:flex; align-items:center; gap:18px; min-height:42px; flex-wrap:wrap; }
.topbar .label { font-family:var(--font-mono); font-size:10px; letter-spacing:0.14em; text-transform:uppercase; color:var(--muted-2); white-space:nowrap; }
.topbar nav { display:flex; gap:16px 18px; flex-wrap:wrap; }
.topbar a { font-family:var(--font-mono); font-size:11.5px; letter-spacing:0.04em; color:var(--cream-dim); transition:color .15s; border-bottom:1px solid transparent; padding-bottom:1px; }
.topbar a:hover { color:var(--gold); border-bottom-color:var(--gold); }
.topbar .label { color:var(--gold); }

/* ---- sticky nav ---- */
.nav { position:sticky; top:0; z-index:50; background:rgba(14,14,15,0.88); -webkit-backdrop-filter:blur(14px); backdrop-filter:blur(14px); border-bottom:1px solid var(--hairline); }
.nav .container { display:flex; align-items:center; justify-content:space-between; min-height:74px; gap:20px; }
.nav-brand { display:flex; align-items:center; gap:14px; }
.nav-brand img { height:46px; width:auto; }
.nav-brand .wm { display:flex; flex-direction:column; line-height:1.08; }
.nav-brand .wm b { font-family:var(--font-serif); font-weight:400; font-size:20px; color:var(--cream); }
.nav-brand .wm span { font-family:var(--font-mono); font-size:8.5px; letter-spacing:0.16em; text-transform:uppercase; color:var(--muted-2); margin-top:3px; }
.nav-links { display:flex; align-items:center; gap:26px; }
.nav-links a { font-size:13.5px; color:var(--cream-dim); white-space:nowrap; transition:color .15s; }
.nav-links a:hover, .nav-links a.is-active { color:var(--gold); }
.nav-cta { display:inline-flex; align-items:center; gap:8px; height:40px; padding:0 18px; border-radius:var(--radius); background:var(--gold); color:var(--ink)!important; font-size:13px; font-weight:600; }
.nav-cta:hover { background:var(--gold-bright); }
.nav-toggle { display:none; }

/* ---- buttons ---- */
.btn { display:inline-flex; align-items:center; justify-content:center; gap:9px; height:52px; padding:0 28px; border-radius:var(--radius); font-size:14.5px; font-weight:600; letter-spacing:0.02em; border:1px solid transparent; transition:background .2s,border-color .2s,color .2s; }
.btn-solid { background:var(--gold); color:var(--ink); border-color:var(--gold); }
.btn-solid:hover { background:var(--gold-bright); border-color:var(--gold-bright); }
.btn-outline { background:transparent; color:var(--gold); border-color:var(--hairline-strong); }
.btn-outline:hover { border-color:var(--gold); }
.btn-row { display:flex; gap:14px; flex-wrap:wrap; }

/* ---- hero ---- */
.hero { position:relative; border-bottom:1px solid var(--hairline); overflow:hidden; }
.hero-bg { position:absolute; inset:0; background-size:cover; background-position:center 42%; }
.hero-bg::after { content:""; position:absolute; inset:0; background:linear-gradient(180deg,rgba(14,14,15,0.62) 0%,rgba(14,14,15,0.78) 55%,var(--ink) 100%); }
.hero .container { position:relative; padding-top:92px; padding-bottom:78px; }
h1.display { font-size:clamp(2.5rem,5.2vw,4.6rem); line-height:1.04; letter-spacing:-0.015em; margin-top:20px; max-width:1000px; }
.stats { display:flex; gap:48px; flex-wrap:wrap; margin-top:60px; border-top:1px solid var(--hairline); padding-top:32px; }
.stat .v { font-family:var(--font-serif); font-weight:400; font-size:clamp(2.1rem,3.2vw,2.9rem); color:var(--gold); line-height:1; }
.stat .l { font-family:var(--font-mono); font-size:10.5px; letter-spacing:0.1em; text-transform:uppercase; color:var(--muted); margin-top:10px; }

/* ---- sections ---- */
.section { border-top:1px solid var(--hairline); }
.section.alt { background:var(--ink-900); }
.section .container { padding-top:84px; padding-bottom:84px; }
.section-head { max-width:900px; }
.section h2.display { font-size:clamp(2rem,3.6vw,3.1rem); }
.section-body { margin-top:46px; }

/* ---- cards / link tiles ---- */
.tiles { display:grid; grid-template-columns:repeat(3,1fr); gap:18px; }
.tile { display:block; border:1px solid var(--hairline); background:var(--surface); padding:28px; transition:border-color .2s,transform .2s; }
.tile:hover { border-color:var(--hairline-strong); transform:translateY(-2px); }
.tile .k { font-family:var(--font-mono); font-size:10px; letter-spacing:0.12em; text-transform:uppercase; color:var(--muted-2); }
.tile h3 { font-family:var(--font-serif); font-weight:400; font-size:26px; color:var(--cream); margin:12px 0 0; }
.tile p { font-size:14px; line-height:1.55; color:var(--muted); margin:8px 0 0; }
.tile .go { font-family:var(--font-mono); font-size:11.5px; letter-spacing:0.06em; color:var(--gold); margin-top:16px; display:inline-block; }

/* ---- range map ---- */
.rangemap { display:flex; gap:36px; flex-wrap:wrap; align-items:stretch; }
.rangemap-chart { flex:1 1 460px; min-width:300px; position:relative; }
.rangemap-chart svg { width:100%; height:auto; display:block; overflow:visible; }
.rangemap-hover { position:absolute; left:0; bottom:0; font-family:var(--font-mono); font-size:11px; color:var(--muted); letter-spacing:0.04em; }
.rangemap-side { flex:0 1 290px; min-width:248px; display:flex; flex-direction:column; gap:20px; }
.side-label { font-family:var(--font-mono); font-size:10.5px; letter-spacing:0.14em; text-transform:uppercase; color:var(--muted); margin-bottom:12px; }
.chips { display:flex; flex-wrap:wrap; gap:8px; }
.chip { height:34px; padding:0 14px; border-radius:999px; font-family:var(--font-mono); font-size:11px; letter-spacing:0.06em; background:transparent; color:var(--muted); border:1px solid var(--hairline-strong); transition:all .15s; }
.chip.is-active { background:var(--gold); color:var(--ink); border-color:var(--gold); }
.legend { display:flex; flex-direction:column; }
.legend-item { display:flex; align-items:baseline; justify-content:space-between; gap:12px; padding:11px 12px; text-align:left; background:transparent; border:none; border-left:2px solid transparent; border-bottom:1px solid var(--line); transition:background .15s; width:100%; }
.legend-item .n { font-family:var(--font-serif); font-size:18px; color:var(--cream-dim); }
.legend-item .r { font-family:var(--font-mono); font-size:12px; color:var(--muted); white-space:nowrap; }
.legend-item.is-active { background:var(--gold-soft); border-left-color:var(--gold); }
.legend-item.is-active .n { color:var(--cream); } .legend-item.is-active .r { color:var(--gold); }
.readout { margin-top:auto; border-top:1px solid var(--hairline); padding-top:18px; }
.readout .t { font-family:var(--font-serif); font-size:21px; color:var(--cream); line-height:1.3; }
.readout .big { font-family:var(--font-serif); font-size:40px; color:var(--gold); line-height:1; }
.readout .sub { font-family:var(--font-mono); font-size:11px; letter-spacing:0.08em; text-transform:uppercase; color:var(--muted); }
.readout .meta { font-family:var(--font-mono); font-size:11px; color:var(--muted-2); margin-top:10px; }

/* ---- tables ---- */
.table-wrap { overflow-x:auto; border:1px solid var(--hairline); }
table.data { width:100%; border-collapse:collapse; min-width:680px; }
table.data th, table.data td { text-align:left; padding:13px 18px; border-bottom:1px solid var(--line); white-space:nowrap; }
table.data thead th { background:var(--ink-900); border-bottom:1px solid var(--hairline); font-family:var(--font-mono); font-size:10.5px; letter-spacing:0.1em; text-transform:uppercase; color:var(--muted); position:relative; }
table.data thead th[data-sort] { cursor:pointer; user-select:none; }
table.data thead th[data-sort]:hover { color:var(--gold); }
table.data thead th .ar { color:var(--gold); margin-left:6px; opacity:0; }
table.data thead th.sorted .ar { opacity:1; }
table.data td { font-size:14px; color:var(--cream-dim); }
table.data td.num { font-family:var(--font-serif); font-size:18px; color:var(--gold); }
table.data td.name { font-family:var(--font-serif); font-size:18px; color:var(--cream); }
table.data tbody tr:nth-child(even) { background:var(--ink-900); }
table.data tbody tr.is-hidden { display:none; }

/* ---- filter bar ---- */
.filterbar { display:flex; gap:8px; flex-wrap:wrap; align-items:center; border-top:1px solid var(--hairline); border-bottom:1px solid var(--hairline); padding:16px 0; margin-bottom:32px; }
.filter-btn { height:36px; padding:0 18px; border-radius:999px; font-family:var(--font-mono); font-size:11.5px; letter-spacing:0.08em; text-transform:uppercase; background:transparent; color:var(--muted); border:1px solid var(--hairline-strong); transition:all .15s; }
.filter-btn.is-active { background:var(--gold); color:var(--ink); border-color:var(--gold); }
.filter-count { margin-left:auto; font-family:var(--font-mono); font-size:11px; letter-spacing:0.08em; color:var(--muted-2); }

/* ---- spec cards ---- */
.spec-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:18px; }
.spec-card { border:1px solid var(--hairline); background:var(--surface); transition:border-color .22s; }
.spec-card:hover { border-color:var(--hairline-strong); }
.spec-card.is-hidden { display:none; }
.spec-card .pad { padding:22px 24px 24px; }
.spec-card .top { display:flex; align-items:center; justify-content:space-between; gap:12px; }
.spec-card .maker { font-family:var(--font-mono); font-size:10.5px; letter-spacing:0.14em; text-transform:uppercase; color:var(--muted); }
.spec-card .badge { font-family:var(--font-mono); font-size:9.5px; letter-spacing:0.1em; text-transform:uppercase; color:var(--gold); border:1px solid var(--hairline-strong); border-radius:999px; padding:3px 10px; white-space:nowrap; }
.spec-card h3 { font-family:var(--font-serif); font-weight:400; font-size:27px; color:var(--cream); margin:12px 0 0; line-height:1.05; }
.spec-card .note { font-size:13.5px; line-height:1.55; color:var(--muted); margin:9px 0 20px; min-height:42px; }
.spec-card .specs { display:grid; grid-template-columns:1fr 1fr; gap:15px 12px; border-top:1px solid var(--line); padding-top:18px; }
.spec-card .specs .k { font-family:var(--font-mono); font-size:9.5px; letter-spacing:0.12em; text-transform:uppercase; color:var(--muted-2); }
.spec-card .specs .v { font-family:var(--font-serif); font-size:21px; color:var(--gold); line-height:1.1; margin-top:4px; }

/* ---- spec card: full specification expand ---- */
.spec-toggle { display:flex; align-items:center; gap:8px; width:100%; margin-top:18px; padding:11px 0 0; background:none; border:none; border-top:1px solid var(--line); cursor:pointer; font-family:var(--font-mono); font-size:10px; letter-spacing:0.14em; text-transform:uppercase; color:var(--muted); transition:color .2s; }
.spec-toggle:hover { color:var(--gold); }
.spec-toggle .chev { margin-left:auto; width:9px; height:9px; border-right:1.4px solid currentColor; border-bottom:1.4px solid currentColor; transform:rotate(45deg); transition:transform .3s ease; }
.spec-card.is-open .spec-toggle { color:var(--gold); }
.spec-card.is-open .spec-toggle .chev { transform:rotate(-135deg); }
.spec-more { overflow:hidden; max-height:0; opacity:0; transition:max-height .34s ease, opacity .26s ease; }
.spec-card.is-open .spec-more { opacity:1; }
.spec-meta { display:grid; grid-template-columns:1fr 1fr; gap:15px 20px; margin-top:16px; padding-top:16px; border-top:1px solid var(--hairline); }
.spec-meta > div { min-width:0; }
.spec-meta .k { display:block; font-family:var(--font-mono); font-size:9px; letter-spacing:0.12em; text-transform:uppercase; color:var(--muted-2); }
.spec-meta .v { display:block; font-family:var(--font-sans); font-size:13.5px; color:var(--cream); margin-top:5px; line-height:1.3; overflow-wrap:anywhere; }
.spec-hr-note { font-family:var(--font-mono); font-size:9px; letter-spacing:0.06em; color:var(--muted-2); margin:14px 0 0; line-height:1.4; }

/* ---- contact ---- */
.contact { position:relative; border-top:1px solid var(--hairline); overflow:hidden; }
.contact-bg { position:absolute; inset:0; background-size:cover; background-position:center; }
.contact-bg::after { content:""; position:absolute; inset:0; background:linear-gradient(90deg,var(--ink) 0%,rgba(14,14,15,0.82) 48%,rgba(14,14,15,0.55) 100%); }
.contact .container { position:relative; padding-top:92px; padding-bottom:92px; }
.contact .inner { max-width:560px; }
.wa-btn { display:inline-flex; align-items:center; gap:11px; height:56px; padding:0 30px; border-radius:var(--radius); background:#25D366; color:#fff; font-size:15px; font-weight:600; transition:background .2s; }
.wa-btn:hover { background:#1fbe5b; }
.contact .line { display:flex; gap:32px; flex-wrap:wrap; margin-top:34px; font-family:var(--font-mono); font-size:12.5px; }
.contact .line a { color:var(--cream-dim); }

/* ---- footer ---- */
.footer { background:var(--ink); border-top:1px solid var(--hairline); }
.footer .container { padding-top:60px; padding-bottom:40px; }
.footer-grid { display:grid; grid-template-columns:1.5fr 1fr 1fr; gap:40px; }
.footer img.flogo { height:72px; width:auto; margin-bottom:16px; }
.footer p { font-size:13.5px; line-height:1.6; color:var(--muted); margin:0; max-width:360px; }
.footer .fh { font-family:var(--font-mono); font-size:11px; letter-spacing:0.12em; text-transform:uppercase; color:var(--muted-2); margin-bottom:16px; }
.footer ul { list-style:none; padding:0; margin:0; display:flex; flex-direction:column; gap:10px; }
.footer ul a { font-size:14px; color:var(--cream-dim); } .footer ul a:hover { color:var(--gold); }
.footer-base { margin-top:46px; padding-top:22px; border-top:1px solid var(--line); display:flex; justify-content:space-between; gap:16px; flex-wrap:wrap; }
.footer-base span { font-family:var(--font-mono); font-size:11px; color:var(--muted-2); }

/* ---- floating whatsapp ---- */
.wa-float { position:fixed; right:22px; bottom:22px; z-index:60; width:56px; height:56px; border-radius:50%; background:#25D366; color:#fff; display:inline-flex; align-items:center; justify-content:center; box-shadow:0 8px 28px rgba(0,0,0,0.45); }

.note-fine { font-family:var(--font-mono); font-size:11px; color:var(--muted-2); margin-top:16px; }

/* ---- responsive ---- */
@media (max-width:1000px) {
  .tiles, .spec-grid { grid-template-columns:repeat(2,1fr); }
  .footer-grid { grid-template-columns:1fr 1fr; }
}
@media (max-width:820px) {
  /* No-JS fallback: let the links wrap so navigation always works */
  .nav-links { flex-wrap:wrap; gap:14px 18px; }

  /* JS-enhanced: collapse links into a hamburger panel */
  .has-js .nav-toggle {
    display:inline-flex; flex-direction:column; justify-content:center; gap:5px;
    width:46px; height:42px; margin-left:auto; padding:0 12px;
    background:transparent; border:1px solid var(--hairline-strong);
    border-radius:var(--radius); cursor:pointer;
  }
  .has-js .nav-toggle span { display:block; width:20px; height:1.5px; background:var(--cream); transition:transform .25s ease, opacity .2s ease; }
  .has-js .nav .container { flex-wrap:wrap; }
  .has-js .nav-links { display:none; order:3; flex-basis:100%; width:100%; flex-direction:column; align-items:stretch; gap:0; padding:6px 0 12px; }
  .has-js .nav-links.is-open { display:flex; }
  .has-js .nav-links a { white-space:normal; padding:14px 2px; border-bottom:1px solid var(--line); font-size:15px; }
  .has-js .nav-links a.nav-cta { height:46px; margin-top:14px; justify-content:center; border-bottom:none; }
  .has-js .nav-toggle.is-open span:nth-child(1) { transform:translateY(6.5px) rotate(45deg); }
  .has-js .nav-toggle.is-open span:nth-child(2) { opacity:0; }
  .has-js .nav-toggle.is-open span:nth-child(3) { transform:translateY(-6.5px) rotate(-45deg); }
}
@media (max-width:640px) {
  .tiles, .spec-grid { grid-template-columns:1fr; }
  .footer-grid { grid-template-columns:1fr; }
  .stats { gap:28px; }
  .section .container { padding-top:60px; padding-bottom:60px; }
}
/* ---- referrer back banner ---- */
.back-banner { display:flex; align-items:center; justify-content:center; gap:10px; background:var(--gold); color:var(--ink); padding:11px 16px; text-align:center; }
.back-banner a { color:var(--ink); display:inline-flex; align-items:center; gap:8px; font-size:13.5px; font-weight:600; letter-spacing:0.01em; }
.back-banner a:hover { text-decoration:underline; }

/* ---- network band ---- */
.network-band { background:var(--ink-900); border-top:1px solid var(--hairline); }
.network-band .container { padding-top:72px; padding-bottom:72px; }
.net-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:14px; margin-top:38px; }
.net-card { display:flex; flex-direction:column; gap:5px; background:var(--gold); border:1px solid var(--gold); padding:22px 24px; transition:background .2s,transform .2s,box-shadow .2s; }
.net-card:hover { background:var(--gold-bright); transform:translateY(-3px); box-shadow:0 12px 30px rgba(0,0,0,0.4); }
.nc-name { font-family:var(--font-serif); font-size:23px; color:var(--ink); line-height:1.1; }
.nc-desc { font-size:13px; color:rgba(14,14,15,0.66); line-height:1.45; }
.nc-go { font-family:var(--font-mono); font-size:10.5px; letter-spacing:0.08em; text-transform:uppercase; color:var(--ink); margin-top:10px; font-weight:600; }

/* ---- buyer / acquisition sections ---- */
.buy-band { border-top:1px solid var(--hairline); }
.buy-band.alt { background:var(--ink-900); }
.buy-grid { display:grid; grid-template-columns:1.1fr 0.9fr; gap:48px; align-items:start; margin-top:44px; }
.buy-prose p { font-size:15.5px; line-height:1.72; color:var(--cream-dim); margin:0 0 16px; max-width:600px; }
.buy-prose p:last-child { margin-bottom:0; }
.buy-prose strong { color:var(--cream); font-weight:600; }
.buy-aside { border:1px solid var(--hairline-strong); background:var(--surface); padding:30px; }
.buy-aside h3 { font-family:var(--font-serif); font-weight:400; font-size:25px; color:var(--cream); margin:0; line-height:1.15; }
.buy-aside p { font-size:14px; color:var(--muted); line-height:1.6; margin:12px 0 22px; }
.buy-ctas { display:flex; flex-direction:column; gap:10px; }
.buy-cta { display:flex; align-items:center; justify-content:space-between; gap:12px; padding:15px 18px; background:var(--gold); color:var(--ink); font-weight:600; font-size:13.5px; transition:background .2s,transform .2s; }
.buy-cta:hover { background:var(--gold-bright); transform:translateX(3px); }
.buy-cta .arr { font-family:var(--font-mono); }
.buy-cta.green { background:#25D366; color:#fff; }
.buy-cta.green:hover { background:#1fbe5b; }
.expert-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:28px; margin-top:40px; }
.expert-grid p { font-size:14.5px; line-height:1.7; color:var(--cream-dim); margin:0; }
.expert-grid .eh { font-family:var(--font-mono); font-size:10.5px; letter-spacing:0.12em; text-transform:uppercase; color:var(--gold); margin:0 0 12px; }
table.data caption { caption-side:top; text-align:left; padding:0 0 16px; font-family:var(--font-mono); font-size:11px; letter-spacing:0.06em; color:var(--muted-2); }
@media (max-width:820px) { .buy-grid { grid-template-columns:1fr; gap:28px; } .expert-grid { grid-template-columns:1fr; gap:20px; } }
@media (max-width:1000px) { .net-grid { grid-template-columns:repeat(2,1fr); } }
@media (max-width:640px) { .net-grid { grid-template-columns:1fr; } }

@media (prefers-reduced-motion:reduce) { html { scroll-behavior:auto; } * { transition:none!important; } }

/* ---- skip link (keyboard / screen-reader) ---- */
.skip-link { position:absolute; left:-9999px; top:0; z-index:200; background:var(--gold); color:var(--ink); padding:11px 18px; border-radius:0 0 var(--radius) 0; font-family:var(--font-sans); font-size:14px; font-weight:600; }
.skip-link:focus { left:0; }

/* keep the brand mark from crowding the hamburger on small phones */
@media (max-width:480px) { .nav-brand img { height:38px; } }
