/* Final Approach Radio — one stylesheet, no build step.
 * Every colour, face and corner comes from the tokens below. */

/* ---------- Tokens: "Approach plate" (the site's look, chosen 2026-09-08; the four-theme
 * experiment that preceded it is in memory/decisions.md) ----------
 * An FAA instrument approach chart: white paper, black ink, chart magenta for the one
 * thing you must not miss, a condensed grotesque, heavy rules around the briefing strip. */
:root{
  --bg:#fff; --bg-2:#fff; --ink:#000; --ink-2:#3d3d3d; --ink-3:#666;
  --accent:#b8156e; --accent-2:#8e0f55; --on-accent:#fff;
  --line:#cfcfcf; --line-strong:#000; --hover:rgba(184,21,110,.06);
  --poster:repeating-linear-gradient(45deg,#fff 0 6px,#ececec 6px 7px);
  --progress:var(--ink);
  --max:1040px; --radius:0; --radius-s:0; --pill:0; --rule:2px;
  --display:"Barlow Condensed","Arial Narrow","Helvetica Neue",Arial,sans-serif;
  --body:"Barlow","Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
  --display-weight:700; --display-tracking:-.005em; --body-size:17px;
  --h1:clamp(2.4rem,6vw,3.9rem);
  color-scheme:light;
}

/* ---------- Base ---------- */
*{box-sizing:border-box}
body{margin:0;min-height:100vh;background:var(--bg);color:var(--ink);font:var(--body-size)/1.55 var(--body);-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{font-family:var(--display);font-weight:var(--display-weight);letter-spacing:var(--display-tracking);line-height:1.15;margin:0 0 .4em}
h1{font-size:var(--h1)}
h2{font-size:1.5rem;margin-top:2.6em}
h3{font-size:1.15rem;margin-top:1.6em}
p{margin:.6em 0 1em}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}
.muted{color:var(--ink-2)}
.small{font-size:.9rem}
.mono{font-family:var(--mono)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

header.site{border-bottom:var(--rule) solid var(--line-strong);background:var(--bg-2)}
header.site .wrap{display:flex;flex-wrap:wrap;align-items:center;gap:8px 16px;min-height:60px;padding-top:10px;padding-bottom:10px}
.brand{font-family:var(--display);font-size:1.15rem;color:var(--ink);letter-spacing:.02em}
.brand span{color:var(--accent)}
nav.top{display:flex;flex-wrap:wrap;align-items:center;gap:4px 18px;margin-left:auto}
nav.top a{color:var(--ink-2);font-size:.95rem;white-space:nowrap}
nav.top a[aria-current]{color:var(--ink)}
/* Airports menu: a <details> in the nav. Square, black-framed, like a chart legend box. */
.menu{position:relative}
.menu summary{list-style:none;cursor:pointer;color:var(--ink-2);font-size:.95rem;white-space:nowrap;padding:2px 0}
.menu summary::-webkit-details-marker{display:none}
.menu summary::after{content:"";display:inline-block;width:6px;height:6px;border:solid var(--ink-2);border-width:0 1.5px 1.5px 0;transform:rotate(45deg);margin:0 0 3px 7px}
.menu[open] summary{color:var(--ink)}
.menu ul{position:absolute;right:0;top:calc(100% + 10px);z-index:10;min-width:260px;margin:0;padding:6px 0;list-style:none;background:var(--bg);border:var(--rule) solid var(--line-strong)}
.menu li{margin:0}
.menu li a,.menu li span{display:flex;justify-content:space-between;align-items:baseline;gap:14px;padding:8px 14px;color:var(--ink);white-space:nowrap}
.menu li a:hover{background:var(--hover);text-decoration:none}
.menu li span{color:var(--ink-3)}
.menu li small{font-size:.75rem;color:var(--ink-3);font-family:var(--mono)}
.menu li a small{color:var(--accent)}
@media (max-width:820px){.menu ul{position:static;min-width:0;margin-top:6px}}

/* Accent picker: a row of ink swatches; the last is a colour well. */
.accents{display:flex;align-items:center;gap:6px;margin:0;padding:0;border:0}
.accents legend{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.accents label{position:relative;width:22px;height:22px;border-radius:50%;cursor:pointer;display:block}
.accents input{position:absolute;inset:0;opacity:0;margin:0;cursor:pointer}
.accents i{display:block;width:100%;height:100%;border-radius:50%;background:var(--sw);border:2px solid var(--bg);box-shadow:0 0 0 1px var(--line)}
.accents input:checked+i,.accents label.custom.active i{box-shadow:0 0 0 2px var(--ink)}
.accents input:focus-visible+i{outline:2px solid var(--ink);outline-offset:2px}
.accents label.custom i{background:conic-gradient(#e63946,#f4a261,#2a9d8f,#457b9d,#8338ec,#e63946)}
.accents label.custom input[type=color]{width:100%;height:100%}
.accents input[type=color]::-webkit-color-swatch-wrapper{padding:0}

main.wrap{padding-top:52px;padding-bottom:80px}
@media (max-width:820px){main.wrap{padding-top:32px;padding-bottom:60px}}
.hero{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:start}
@media (max-width:820px){.hero{grid-template-columns:1fr}}
.lede{font-size:1.15rem;color:var(--ink-2)}
.btn{display:inline-block;padding:11px 18px;border-radius:var(--pill);border:1px solid var(--accent);color:var(--on-accent);background:var(--accent);font-weight:600;cursor:pointer;font:inherit}
.btn:hover{background:var(--accent-2);border-color:var(--accent-2);text-decoration:none}
.btn.ghost{background:transparent;color:var(--ink);border-color:var(--line-strong)}
.btn.ghost:hover{border-color:var(--ink-2);background:transparent}
.row{display:flex;flex-wrap:wrap;gap:12px;align-items:center}

/* Player */
.player{background:var(--bg-2);border:var(--rule) solid var(--line-strong);border-radius:var(--radius);padding:18px 20px}
.player .now{display:flex;flex-wrap:wrap;justify-content:space-between;gap:6px 12px;align-items:baseline;border-bottom:var(--rule) solid var(--line-strong);padding-bottom:10px;margin-bottom:10px}
.player .now .title{font-family:var(--display);font-size:1.2rem}
.player .now .small{line-height:1.4}
.player .now .freq{font-family:var(--mono);font-weight:700;color:var(--accent)}
.player select{background:var(--bg);color:var(--ink);border:1px solid var(--line);border-radius:var(--radius-s);padding:7px 10px;font:inherit;width:100%;max-width:100%}
.transport{display:flex;align-items:center;gap:10px;margin:10px 0 6px}
.transport button{background:var(--bg);color:var(--ink);border:1px solid var(--line-strong);border-radius:var(--pill);width:40px;height:40px;font-size:1rem;cursor:pointer}
.transport button.play{width:54px;height:54px;background:var(--accent);color:var(--on-accent);border-color:var(--accent);font-size:1.3rem}
.transport button:disabled{opacity:.4;cursor:default}
.sliders{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:4px}
@media (max-width:520px){.sliders{grid-template-columns:1fr}}
.slider label{display:flex;justify-content:space-between;font-size:.9rem;color:var(--ink-2);margin-bottom:6px}
.slider label b{color:var(--ink)}
.slider input[type=range]{width:100%;accent-color:var(--accent)}
.progress{height:4px;background:var(--line);border-radius:2px;margin:6px 0 4px;overflow:hidden}
.progress i{display:block;height:100%;width:0;background:var(--progress)}
.times{display:flex;justify-content:space-between;font-family:var(--mono);font-size:.8rem;color:var(--ink-3)}
.tracks{list-style:none;margin:12px 0 0;padding:0;border-top:1px solid var(--line);font-size:.95rem}
.tracks li{display:flex;justify-content:space-between;gap:12px;padding:7px 6px;border-bottom:1px solid var(--line);cursor:pointer}
.tracks li:hover{background:var(--hover)}
.tracks li.active{color:var(--accent)}
.tracks li .f{font-family:var(--mono);color:var(--ink-3);font-size:.8rem;white-space:nowrap}
.notice{font-size:.85rem;color:var(--ink-3);margin-top:12px}
.kbd{font-family:var(--mono);border:1px solid var(--line);border-radius:4px;padding:0 5px;font-size:.8rem}

/* Content blocks */
.three{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
@media (max-width:820px){.three{grid-template-columns:1fr}}
.card{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.card h3{margin-top:0}
.poster{width:100%;aspect-ratio:2/3;background:var(--poster);border:1px solid var(--line);border-radius:var(--radius);display:grid;place-items:center;color:var(--ink-3);font-family:var(--display);text-align:center;padding:20px}
.poster img{width:100%;height:100%;object-fit:cover;border-radius:var(--radius)}
table{border-collapse:collapse;width:100%;font-size:.95rem}
th,td{text-align:left;padding:8px 6px;border-bottom:1px solid var(--line);vertical-align:top}
th{color:var(--ink);font-weight:600;border-bottom:var(--rule) solid var(--line-strong)}
.faq dt{font-weight:600;margin-top:1em}
.faq dd{margin:.3em 0 0;color:var(--ink-2)}
figure{margin:1.6em 0}
figure img{width:100%;border-radius:var(--radius);border:1px solid var(--line)}
figcaption{font-size:.85rem;color:var(--ink-3);margin-top:6px}
.slot{border:1px dashed var(--line);border-radius:var(--radius);padding:14px;color:var(--ink-3);font-size:.9rem}
footer.site{border-top:1px solid var(--line);color:var(--ink-3);font-size:.9rem;padding:24px 0 40px}
footer.site a{color:var(--ink-2);margin-right:14px}
.prose{max-width:720px}
.prose p{font-size:1.05rem}

img,video,audio,table{max-width:100%}
.hero>*{min-width:0}
.player{min-width:0}
.wrap{overflow-wrap:anywhere}

@media (prefers-reduced-motion:no-preference){
  .btn,.transport button{transition:background-color .15s,border-color .15s}
}