@font-face { font-family: "Shoulders"; src: url(fonts/bigshouldersdisplay-var.woff2) format("woff2"); font-weight: 100 900; font-display: swap; }
@font-face { font-family: "Public"; src: url(fonts/publicsans-var.woff2) format("woff2"); font-weight: 100 900; font-display: swap; }
@font-face { font-family: "Plex"; src: url(fonts/plexmono-400.woff2) format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Plex"; src: url(fonts/plexmono-600.woff2) format("woff2"); font-weight: 600; font-display: swap; }

:root {
  --paper: #f4f1e8; --card: #fffdf7; --ink: #15171a; --muted: #5d6066; --line: #d9d3c3; --rule: #15171a;
  --accent: #d2481f; --accent-ink: #fff; --sky: #1f5f8b; --ok: #1d6b3a; --ok-bg: #e5f1e7; --warn: #8a5a00; --warn-bg: #fbefd2;
  --off: #6b6f76; --off-bg: #ebe9e3;
  --display: "Shoulders", "Arial Narrow", sans-serif; --body: "Public", system-ui, sans-serif; --mono: "Plex", ui-monospace, monospace;
}
@media (prefers-color-scheme: dark) {
  :root { --paper: #121418; --card: #1a1d22; --ink: #ece8dd; --muted: #a3a6ac; --line: #30343b; --rule: #ece8dd;
    --accent: #f06a3f; --sky: #7db4dc; --ok: #7fd09a; --ok-bg: #16281c; --warn: #f0c060; --warn-bg: #2c2410; --off: #a0a4ab; --off-bg: #22252a; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 16px/1.6 var(--body); }
a { color: var(--sky); text-underline-offset: 2px; }
a:hover { color: var(--accent); }
h1, h2, h3 { font-family: var(--display); font-weight: 800; line-height: 1.05; letter-spacing: 0.01em; margin: 0 0 0.4em; }
h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); }
h2 { font-size: 1.6rem; }
p { margin: 0 0 1em; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 20px; }
.skip { position: absolute; left: -999px; } .skip:focus { left: 12px; top: 12px; background: var(--card); padding: 8px; z-index: 9; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.mono { font-family: var(--mono); }
.small { font-size: 0.9rem; color: var(--muted); }

/* header and footer */
.top { border-bottom: 3px solid var(--rule); background: var(--card); }
.top .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-top: 12px; padding-bottom: 12px; flex-wrap: wrap; }
.logo { font-family: var(--display); font-weight: 800; font-size: 1.5rem; text-decoration: none; color: var(--ink); display: flex; align-items: center; gap: 10px; }
.logo b { background: var(--accent); color: var(--accent-ink); width: 34px; height: 34px; display: grid; place-items: center; border-radius: 4px; font-size: 1.4rem; }
.top nav { display: flex; gap: 18px; flex-wrap: wrap; }
.top nav a { color: var(--ink); text-decoration: none; font-weight: 600; font-size: 0.95rem; }
.top nav a:hover { color: var(--accent); }
footer { border-top: 3px solid var(--rule); margin-top: 64px; padding: 28px 0 40px; background: var(--card); font-size: 0.9rem; color: var(--muted); }
footer nav { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-bottom: 14px; }
footer nav a { color: var(--ink); }
.crumbs { font-size: 0.85rem; color: var(--muted); margin: 18px 0 8px; display: flex; flex-wrap: wrap; gap: 6px; }

/* hero */
.hero { position: relative; min-height: 560px; display: flex; align-items: center; color: #fff; overflow: hidden;
  background: #1f5f8b url(img/hero.jpg) 60% 72% / cover no-repeat; }
.hero::before { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(10, 22, 34, 0.82) 0%, rgba(10, 22, 34, 0.55) 45%, rgba(10, 22, 34, 0) 75%); }
.hero .wrap { position: relative; width: 100%; padding-top: 56px; padding-bottom: 56px; }
.hero-text { max-width: 600px; }
.hero h1 { font-size: clamp(2.6rem, 6.5vw, 4.6rem); text-shadow: 0 2px 18px rgba(0, 0, 0, 0.35); }
.kicker { font-family: var(--mono); text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.8rem; margin-bottom: 14px; }
.dek { font-size: 1.15rem; max-width: 540px; }
.tail { background: var(--card); color: var(--ink); border: 3px solid var(--rule); border-radius: 6px; padding: 16px; margin-top: 22px; box-shadow: 8px 8px 0 rgba(0, 0, 0, 0.25); }
.tail label { display: block; font-weight: 700; font-size: 0.9rem; margin-bottom: 8px; }
.tail-row { display: flex; gap: 10px; }
.tail input { flex: 1; min-width: 0; font: 800 2.2rem/1 var(--display); letter-spacing: 0.06em; text-transform: uppercase; padding: 10px 14px;
  border: 2px solid var(--line); border-radius: 4px; background: var(--paper); color: var(--ink); }
.tail input:focus, .bar input:focus { outline: 3px solid var(--accent); outline-offset: 1px; }
.tail small { display: block; margin-top: 8px; color: var(--muted); }
.btn { background: var(--accent); color: var(--accent-ink); border: 0; border-radius: 4px; padding: 12px 20px; font: 700 1rem var(--body); cursor: pointer; white-space: nowrap; }
.btn:hover { filter: brightness(1.08); }
.bar { display: flex; gap: 10px; margin: 18px 0 24px; }
.bar input { flex: 1; min-width: 0; padding: 12px 14px; border: 2px solid var(--rule); border-radius: 4px; background: var(--card); color: var(--ink); font: 600 1rem var(--body); }

/* sections */
.section { margin-top: 48px; }
.three { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; border-top: 3px solid var(--rule); padding-top: 24px; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.sub { color: var(--muted); }
.lede { font-size: 1.15rem; max-width: 760px; }
.note { background: var(--card); border: 2px solid var(--line); border-left: 8px solid var(--accent); padding: 22px 24px; border-radius: 4px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0 20px; }
.chips > a, .chips > span { border: 2px solid var(--line); background: var(--card); padding: 6px 10px; border-radius: 4px; text-decoration: none; color: var(--ink); font-weight: 600; font-size: 0.93rem; }
.chips > a:hover, .chips a[aria-current] { border-color: var(--rule); }
.chips a[aria-current] { background: var(--ink); color: var(--paper); }
.chips span span, .chips a span { font-family: var(--mono); font-weight: 400; color: var(--muted); font-size: 0.85rem; margin-left: 4px; }
.chips a[aria-current] span { color: inherit; }

/* lists of aircraft */
.rows { list-style: none; margin: 16px 0; padding: 0; border-top: 2px solid var(--rule); }
.row { display: grid; grid-template-columns: 120px 1.6fr 1fr auto; gap: 16px; align-items: center; padding: 12px 6px; border-bottom: 1px solid var(--line);
  text-decoration: none; color: var(--ink); }
.row:hover { background: var(--card); }
.row b { display: block; }
.row small { color: var(--muted); }
.reg { font: 800 1.5rem/1 var(--display); letter-spacing: 0.05em; }
.mid { color: var(--muted); font-size: 0.93rem; }
.st { font-size: 0.78rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; padding: 3px 8px; border-radius: 3px; white-space: nowrap; }
.st.ok { background: var(--ok-bg); color: var(--ok); } .st.warn { background: var(--warn-bg); color: var(--warn); } .st.off { background: var(--off-bg); color: var(--off); }
.pager { display: flex; gap: 18px; align-items: center; margin: 20px 0; }
.empty { background: var(--card); border: 2px dashed var(--line); padding: 20px 24px; border-radius: 4px; }

/* aircraft record: a registration certificate */
.rec { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 32px; margin-top: 12px; }
.cert { background: var(--card); border: 3px solid var(--rule); border-radius: 6px; padding: 26px; box-shadow: 8px 8px 0 var(--line); }
.cert-top { display: flex; gap: 22px; align-items: center; border-bottom: 3px solid var(--rule); padding-bottom: 18px; margin-bottom: 18px; flex-wrap: wrap; }
.tailno { font: 900 clamp(3rem, 9vw, 5.2rem)/0.9 var(--display); letter-spacing: 0.06em; color: var(--ink);
  border: 3px solid var(--ink); padding: 8px 16px 4px; border-radius: 4px; background: var(--paper); }
.cert-top h1 { font-size: clamp(1.7rem, 3.6vw, 2.4rem); margin: 0; }
.cert-top p { margin: 4px 0 0; color: var(--muted); }
.cert section { margin-top: 26px; }
.cert h2 { font-size: 1.35rem; text-transform: uppercase; letter-spacing: 0.04em; border-bottom: 1px solid var(--line); padding-bottom: 6px; }
.result { padding: 14px 16px; border-radius: 4px; border-left: 6px solid; }
.result b { display: block; font-size: 1.05rem; } .result p { margin: 4px 0 0; }
.result.ok { background: var(--ok-bg); border-color: var(--ok); } .result.warn { background: var(--warn-bg); border-color: var(--warn); } .result.off { background: var(--off-bg); border-color: var(--off); }
.who { font: 800 2rem/1.1 var(--display); margin-bottom: 10px; }
.facts { margin: 0; display: grid; gap: 0; }
.facts > div { display: grid; grid-template-columns: 170px 1fr; gap: 14px; padding: 9px 0; border-bottom: 1px dotted var(--line); }
.facts dt { font-family: var(--mono); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--muted); padding-top: 3px; }
.facts dd { margin: 0; }
.specs { max-width: 620px; margin: 10px 0 22px; }
.trust { border-left: 4px solid var(--accent); padding-left: 10px; }
.hist { list-style: none; padding: 0; margin: 10px 0 0; }
.hist li { display: grid; grid-template-columns: 140px 1fr; gap: 14px; padding: 9px 0; border-bottom: 1px dotted var(--line); }
.hist .date { font-family: var(--mono); font-size: 0.88rem; color: var(--muted); }
.hist small { display: block; color: var(--muted); }
.side .box { background: var(--card); border: 2px solid var(--line); border-radius: 4px; padding: 18px; margin-bottom: 16px; }
.side h2 { font-size: 1.2rem; }
.side p { font-size: 0.95rem; margin: 0; }

/* prose pages */
.page { margin-top: 18px; }
.prose { max-width: 760px; }
.prose h2 { margin-top: 1.6em; }
.prose li { margin-bottom: 0.4em; }

@media (max-width: 860px) {
  .rec, .split, .three { grid-template-columns: 1fr; }
  .row { grid-template-columns: 96px 1fr; }
  .row .mid, .row .st { grid-column: 2; }
  .hero { min-height: 520px; background-position: 78% 75%; }
  .hero::before { background: linear-gradient(180deg, rgba(10, 22, 34, 0.55) 0%, rgba(10, 22, 34, 0.8) 100%); }
}
@media (max-width: 520px) {
  .wrap { padding: 0 16px; }
  .tail-row, .bar { flex-direction: column; }
  .tail input { font-size: 1.9rem; }
  .facts > div, .hist li { grid-template-columns: 1fr; gap: 2px; }
  .cert { padding: 18px; box-shadow: 4px 4px 0 var(--line); }
  .top nav { gap: 12px; }
}

/* Most looked-up tail numbers (homepage) */
.pop { list-style: none; margin: 16px 0 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.pop li { display: flex; flex-direction: column; }
.pop-card { flex: 1; display: block; background: var(--card); border: 3px solid var(--rule); border-radius: 6px; overflow: hidden; text-decoration: none; color: var(--ink); box-shadow: 6px 6px 0 var(--line); }
.pop-card:hover { color: var(--ink); box-shadow: 6px 6px 0 var(--accent); }
.pop-card img, .pop-none { display: block; width: 100%; aspect-ratio: 3 / 2; height: auto; object-fit: cover; border-bottom: 3px solid var(--rule); background: var(--off-bg); }
.pop-none { display: grid; place-items: center; font: 800 2.4rem/1 var(--display); letter-spacing: 0.06em; color: var(--off); }
.pop-body { display: block; padding: 12px 14px 14px; }
.pop-body .reg { display: block; color: var(--accent); margin-bottom: 6px; }
.pop-body b { display: block; line-height: 1.3; }
.pop-body small { display: block; color: var(--muted); line-height: 1.4; margin-top: 4px; }
.credit { font-size: 0.72rem; line-height: 1.35; color: var(--muted); margin: 8px 2px 0; min-height: 2.95rem; }
.credit a { color: var(--muted); }
@media (max-width: 900px) { .pop { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .pop { grid-template-columns: 1fr; } }

/* Model photos: aircraft page sidebar and search thumbnails */
.side .shot { padding: 0; overflow: hidden; margin: 0 0 16px; }
.shot img { display: block; width: 100%; height: auto; aspect-ratio: 3 / 2; object-fit: cover; border-bottom: 2px solid var(--line); }
.shot figcaption { padding: 12px 16px 14px; }
.shot figcaption b { display: block; font-size: 0.95rem; }
.shot .credit { display: block; min-height: 0; margin: 4px 0 0; }
.row.has-thumb { grid-template-columns: 84px 110px 1.6fr 1fr auto; }
.thumb { display: block; width: 84px; aspect-ratio: 3 / 2; border-radius: 3px; overflow: hidden; background: var(--off-bg); }
.thumb img { display: block; width: 100%; height: 100%; object-fit: cover; }
@media (max-width: 860px) {
  .row.has-thumb { grid-template-columns: 84px 1fr; column-gap: 14px; row-gap: 2px; }
  .row.has-thumb .thumb { grid-row: 1 / span 4; align-self: start; }
  .row.has-thumb > :not(.thumb) { grid-column: 2; }
  .row.has-thumb .st { justify-self: start; }
}