/* Shared styles for the Aviation GPS website (guide, privacy, contact). */
@font-face { font-family: "B612"; src: url("fonts/B612-Regular.ttf") format("truetype"); font-weight: 400; font-display: swap; }
@font-face { font-family: "B612"; src: url("fonts/B612-Bold.ttf") format("truetype"); font-weight: 700; font-display: swap; }
@font-face { font-family: "B612 Mono"; src: url("fonts/B612Mono-Regular.ttf") format("truetype"); font-weight: 400; font-display: swap; }
@font-face { font-family: "B612 Mono"; src: url("fonts/B612Mono-Bold.ttf") format("truetype"); font-weight: 700; font-display: swap; }

:root {
  --bg: #050706;
  --panel: #0d1210;
  --panel-2: #121916;
  --line: #1f2b26;
  --text: #d6e2dc;
  --muted: #8a9a93;
  --green: #00ff3c;
  --green-dim: #36c95a;
  --cyan: #00e5ff;
  --magenta: #ff2bd6;
  --amber: #ffcc00;
  --red: #ff3b3b;
  --white: #ffffff;
  --radius: 10px;
  --topbar-h: 60px;
  --mono: "B612 Mono", ui-monospace, Menlo, monospace;
  --sans: "B612", system-ui, -apple-system, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: var(--sans); font-size: 16px; line-height: 1.62;
  -webkit-text-size-adjust: 100%;
}
a { color: var(--cyan); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; display: block; }
code, kbd, .k { font-family: var(--mono); }
kbd, .k {
  display: inline-block; padding: 0 .4em; border: 1px solid var(--green-dim); border-radius: 4px;
  color: var(--green); font-size: .86em; line-height: 1.5; white-space: nowrap; background: #07120b;
}
.k.mag { color: var(--magenta); border-color: var(--magenta); background: #170616; }
.k.red { color: var(--red); border-color: var(--red); background: #1a0606; }
.k.amb { color: var(--amber); border-color: var(--amber); background: #171204; }

/* ---------- layout ---------- */
.layout { display: grid; grid-template-columns: 270px minmax(0, 1fr); max-width: 1320px; margin: 0 auto; }
nav.toc {
  position: sticky; top: var(--topbar-h); height: calc(100vh - var(--topbar-h)); overflow-y: auto; padding: 28px 18px 40px 22px;
  border-right: 1px solid var(--line); font-size: 14px;
}
.toc .brand { display: flex; gap: 12px; align-items: center; margin-bottom: 22px; }
.toc .brand img { width: 44px; height: 44px; border-radius: 10px; }
.toc .brand b { font-family: var(--mono); color: var(--green); letter-spacing: .04em; font-size: 15px; display: block; }
.toc .brand span { color: var(--muted); font-size: 12px; }
.toc ol { list-style: none; margin: 0; padding: 0; counter-reset: s; }
.toc > ol > li { counter-increment: s; margin: 2px 0; }
.toc > ol > li > a::before { content: counter(s, decimal-leading-zero) "  "; color: var(--muted); font-family: var(--mono); font-size: 12px; }
.toc a { color: var(--text); display: block; padding: 3px 8px; border-radius: 6px; }
.toc a:hover { background: var(--panel-2); text-decoration: none; color: var(--green); }
.toc ol ol { padding-left: 26px; margin: 2px 0 6px; }
.toc ol ol a { color: var(--muted); font-size: 13px; padding: 1px 8px; }
details.toc-mobile { display: none; }

main { padding: 0 48px 80px; min-width: 0; }
section { padding-top: 36px; }
section + section { border-top: 1px solid var(--line); margin-top: 36px; }

/* ---------- typography ---------- */
h1, h2, h3, h4 { font-family: var(--mono); font-weight: 700; letter-spacing: .02em; line-height: 1.25; }
h2 { color: var(--green); font-size: 26px; margin: 0 0 6px; }
h2 .num { color: var(--muted); font-size: 16px; margin-right: 10px; }
h3 { color: var(--cyan); font-size: 19px; margin: 34px 0 8px; }
h4 { color: var(--white); font-size: 16px; margin: 22px 0 6px; }
p { margin: 0 0 14px; }
.lead { font-size: 18px; color: #e8f2ec; max-width: 70ch; }
ul, ol { padding-left: 1.3em; margin: 0 0 14px; }
li { margin: 3px 0; }
strong { color: var(--white); }
.muted { color: var(--muted); }

/* ---------- hero ---------- */
.hero {
  margin: 0 -48px; padding: 56px 48px 44px;
  background:
    radial-gradient(1200px 380px at 85% -60px, rgba(0,229,255,.10), transparent 60%),
    radial-gradient(900px 300px at 10% 0, rgba(0,255,60,.10), transparent 60%),
    var(--bg);
  border-bottom: 1px solid var(--line);
  display: grid; grid-template-columns: minmax(0,1fr) 300px; gap: 40px; align-items: center;
}
.hero .eyebrow { font-family: var(--mono); color: var(--cyan); letter-spacing: .14em; font-size: 13px; }
.hero h1 { font-size: clamp(34px, 5vw, 54px); color: var(--green); margin: 8px 0 12px; text-shadow: 0 0 24px rgba(0,255,60,.25); }
.hero h1 small { display: block; font-size: .42em; color: var(--white); letter-spacing: .08em; margin-top: 8px; }
.hero .meta { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.hero .meta span { font-family: var(--mono); font-size: 12px; color: var(--muted); border: 1px solid var(--line); padding: 4px 10px; border-radius: 999px; }
.hero .phone { justify-self: end; }

/* ---------- phone frames & figures ---------- */
.phone {
  width: 100%; max-width: 300px; background: #000; border-radius: 34px; padding: 9px;
  border: 1px solid #2a3530; box-shadow: 0 20px 50px rgba(0,0,0,.6), inset 0 0 0 2px #0b0f0d;
}
.phone img { border-radius: 26px; width: 100%; }
figure { margin: 0; }
figcaption { font-size: 13px; color: var(--muted); margin-top: 10px; text-align: center; max-width: 300px; }
.feature { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 40px; align-items: start; margin: 22px 0 10px; }
.feature.flip { grid-template-columns: 280px minmax(0, 1fr); }
.feature.flip > figure { order: -1; }
.feature > figure { position: sticky; top: calc(var(--topbar-h) + 20px); }
.gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 22px; margin: 18px 0; }
.gallery .phone { border-radius: 26px; padding: 6px; }
.gallery .phone img { border-radius: 20px; }
.gallery figcaption { max-width: none; }
a.zoom { display: block; cursor: zoom-in; }

/* ---------- callouts ---------- */
.note, .warn, .tip {
  border: 1px solid var(--line); border-left: 4px solid var(--cyan); background: var(--panel);
  padding: 12px 16px; border-radius: 8px; margin: 16px 0;
}
.note > b:first-child, .warn > b:first-child, .tip > b:first-child { font-family: var(--mono); letter-spacing: .06em; display: block; margin-bottom: 2px; }
.note > b:first-child { color: var(--cyan); }
.warn { border-left-color: var(--amber); }
.warn > b:first-child { color: var(--amber); }
.tip { border-left-color: var(--green); }
.tip > b:first-child { color: var(--green); }
.danger { border-left-color: var(--red); }
.danger > b:first-child { color: var(--red); }

/* ---------- tables ---------- */
.table-wrap { overflow-x: auto; margin: 14px 0 18px; border: 1px solid var(--line); border-radius: var(--radius); }
table { border-collapse: collapse; width: 100%; font-size: 14.5px; }
th, td { text-align: left; padding: 8px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-family: var(--mono); color: var(--cyan); font-weight: 700; background: var(--panel-2); font-size: 13px; letter-spacing: .04em; white-space: nowrap; }
tr:last-child td { border-bottom: 0; }
td:first-child { font-family: var(--mono); color: var(--green); white-space: nowrap; }
td.plain { font-family: var(--sans); color: var(--text); white-space: normal; }
tbody tr:hover { background: rgba(255,255,255,.02); }

/* ---------- misc components ---------- */
.legend { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 10px; margin: 14px 0; }
.legend div { display: flex; gap: 10px; align-items: center; background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 8px 12px; font-size: 14px; }
.swatch { width: 16px; height: 16px; border-radius: 4px; flex: none; }
.steps { counter-reset: st; list-style: none; padding: 0; }
.steps > li { counter-increment: st; position: relative; padding-left: 40px; margin: 10px 0; }
.steps > li::before {
  content: counter(st); position: absolute; left: 0; top: 0; width: 26px; height: 26px; border-radius: 50%;
  border: 1.5px solid var(--green); color: var(--green); font-family: var(--mono); font-size: 13px;
  display: grid; place-items: center;
}
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 12px; margin: 16px 0; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; }
.card h4 { margin: 0 0 4px; color: var(--green); }
.card p { margin: 0; font-size: 14.5px; color: var(--text); }
.layout-diagram { display: grid; gap: 4px; max-width: 360px; font-family: var(--mono); font-size: 13px; margin: 14px 0; }
.layout-diagram div { border: 1px solid var(--green-dim); border-radius: 6px; padding: 8px 10px; color: var(--green); background: #07120b; }
.layout-diagram .tall { padding: 26px 10px; }
.layout-diagram .bar { background: var(--green); color: #000; font-weight: 700; padding: 4px 10px; }
.layout-diagram .strip { color: var(--muted); border-color: var(--line); background: transparent; text-align: center; }
footer { color: var(--muted); font-size: 13px; border-top: 1px solid var(--line); margin-top: 48px; padding-top: 22px; }
.top-link { font-family: var(--mono); font-size: 12px; float: right; margin-top: 6px; color: var(--muted); }

/* ---------- site top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50; height: var(--topbar-h);
  background: rgba(5,7,6,.92); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.topbar-inner { max-width: 1320px; margin: 0 auto; height: 100%; padding: 0 22px; display: flex; align-items: center; gap: 24px; }
.topbar .brand { display: flex; align-items: center; gap: 12px; color: var(--green); text-decoration: none; margin-right: auto; }
.topbar .brand img { width: 36px; height: 36px; border-radius: 8px; }
.topbar .brand b { font-family: var(--mono); letter-spacing: .05em; font-size: 15px; }
.topbar .brand span { display: block; color: var(--muted); font-size: 12px; font-family: var(--sans); letter-spacing: 0; font-weight: 400; }
.topnav { display: flex; gap: 6px; }
.topnav a { font-family: var(--mono); font-size: 13.5px; letter-spacing: .04em; color: var(--text); padding: 8px 12px; border-radius: 8px; border: 1px solid transparent; white-space: nowrap; }
.topnav a:hover { text-decoration: none; color: var(--green); background: var(--panel-2); }
.topnav a[aria-current="page"] { color: #000; background: var(--green); }
.toc .toc-title { font-family: var(--mono); font-size: 12px; letter-spacing: .1em; color: var(--muted); margin: 0 0 14px 8px; }

/* ---------- single-column pages (privacy, contact) ---------- */
.page { max-width: 820px; margin: 0 auto; padding: 44px 24px 80px; }
.page h1 { font-size: clamp(30px, 4vw, 42px); color: var(--green); margin: 0 0 8px; }
.page .dates { font-family: var(--mono); font-size: 13px; color: var(--muted); margin-bottom: 26px; }
.page h2 { margin-top: 38px; font-size: 22px; }
.page h3 { margin-top: 24px; font-size: 17px; }
.page td:first-child { font-family: var(--sans); color: var(--white); white-space: normal; }
.summary { border: 1px solid var(--green-dim); background: #07120b; border-radius: var(--radius); padding: 16px 20px; margin: 18px 0 8px; }
.summary b:first-child { font-family: var(--mono); color: var(--green); letter-spacing: .06em; display: block; margin-bottom: 4px; }
.contact-card { display: grid; grid-template-columns: 96px 1fr; gap: 22px; align-items: center; background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 24px; margin: 22px 0; }
.contact-card img { width: 96px; height: 96px; border-radius: 20px; }
.contact-card .name { font-family: var(--mono); font-size: 20px; color: var(--white); font-weight: 700; }
.contact-card .role { color: var(--muted); font-size: 14px; margin-bottom: 10px; }
.contact-card .email { font-family: var(--mono); font-size: 17px; }
.btn { display: inline-block; font-family: var(--mono); font-size: 14px; letter-spacing: .04em; color: #000; background: var(--green); border-radius: 8px; padding: 9px 16px; margin-top: 12px; }
.btn:hover { text-decoration: none; filter: brightness(1.1); }
.site-footer { max-width: 1320px; margin: 0 auto; padding: 22px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; display: flex; flex-wrap: wrap; gap: 8px 22px; }
.site-footer a { color: var(--muted); }

/* ---------- responsive ---------- */
@media (max-width: 1100px) {
  .feature, .feature.flip { grid-template-columns: minmax(0, 1fr) 240px; gap: 28px; }
  .feature.flip > figure { order: 0; }
}
@media (max-width: 880px) {
  .layout { grid-template-columns: 1fr; }
  nav.toc { display: none; }
  :root { --topbar-h: 56px; }
  .topbar-inner { padding: 0 12px; gap: 8px; }
  .topbar .brand span, .topbar .brand b { display: none; }
  .topnav a { padding: 7px 10px; font-size: 13px; }
  .topnav .long { display: none; }
  .topbar .brand { flex: none; }
  .contact-card { grid-template-columns: 1fr; }
  details.toc-mobile { display: block; margin: 16px 0 0; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 10px 14px; }
  details.toc-mobile summary { font-family: var(--mono); color: var(--green); cursor: pointer; }
  details.toc-mobile ol { margin: 10px 0 4px; }
  main { padding: 0 16px 60px; }
  .hero { margin: 0 -16px; padding: 36px 16px 30px; grid-template-columns: 1fr; gap: 24px; }
  .hero .phone { justify-self: center; max-width: 240px; }
  .feature, .feature.flip { grid-template-columns: 1fr; gap: 18px; }
  .feature > figure { position: static; justify-self: center; width: 100%; max-width: 260px; }
  .gallery { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
  h2 { font-size: 22px; }
}

/* ---------- print ---------- */
@media print {
  :root { --bg: #fff; --panel: #f4f6f5; --panel-2: #eef1ef; --line: #ccd5d1; --text: #111; --muted: #555; --green: #0a7a2a; --green-dim: #0a7a2a; --cyan: #006b7a; --white: #000; }
  nav.toc, details.toc-mobile, .top-link, .topbar { display: none !important; }
  .layout { display: block; }
  main { padding: 0; }
  .hero { margin: 0; padding: 0 0 20px; background: none; }
  .hero h1 { text-shadow: none; }
  .feature > figure { position: static; }
  section { break-inside: auto; }
  .phone, figure { break-inside: avoid; }
  a { color: inherit; }
}