/* FRTOL site styles, shared by every page.
   Layout concept: a light, readable "kneeboard" page interrupted by dark avionics-panel bands,
   with frequencies and readouts set in a monospaced face, like avionics displays. */

:root {
  /* Colour: page + ink (theme-aware) */
  --bg: #eef1f5;
  --surface: #ffffff;
  --ink: #0f1a2b;
  --muted: #4f5d72;
  --line: #d3dae4;
  /* Signal colours as text on the page (darker in light mode for contrast) */
  --amber-ink: #9a5800;
  --teal-ink: #0b7471;
  --green-ink: #2f7a2a;
  --red-ink: #b3261e;
  --amber-wash: #fbecd6;
  --teal-wash: #dcefee;
  --green-wash: #e1f0dc;

  /* Avionics panel (same in both themes: it is a dark instrument panel) */
  --panel: #0b2545;
  --panel-deep: #061528;
  --panel-line: #1f3a60;
  --panel-text: #e9eef5;
  --panel-muted: #9fb2c9;
  --amber: #f0a030;
  --teal: #45d0cc;
  --green: #8bd36f;

  /* Type */
  --display: "Barlow Condensed", "Arial Narrow", "Roboto Condensed", system-ui, sans-serif;
  --body: "IBM Plex Sans", -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --radius: 10px;
  --wrap: 1140px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #081120; --surface: #0e1a2d; --ink: #e6ecf4; --muted: #95a5bb; --line: #1f2f47;
    --amber-ink: #f3ac45; --teal-ink: #5fd6d2; --green-ink: #94d87b; --red-ink: #ff8a80;
    --amber-wash: #2b1f0c; --teal-wash: #0c2a2e; --green-wash: #13261a;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #081120; --surface: #0e1a2d; --ink: #e6ecf4; --muted: #95a5bb; --line: #1f2f47;
  --amber-ink: #f3ac45; --teal-ink: #5fd6d2; --green-ink: #94d87b; --red-ink: #ff8a80;
  --amber-wash: #2b1f0c; --teal-wash: #0c2a2e; --green-wash: #13261a;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation: none !important; transition: none !important; } }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.65 var(--body); }
img { max-width: 100%; display: block; }
a { color: var(--teal-ink); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--amber); outline-offset: 3px; border-radius: 4px; }
h1, h2, h3 { font-family: var(--display); text-wrap: balance; line-height: 1.05; margin: 0; }
h2 { font-size: clamp(2.1rem, 4.6vw, 3.1rem); font-weight: 700; text-transform: uppercase; letter-spacing: .01em; }
h3 { font-size: 1.45rem; font-weight: 600; letter-spacing: .01em; }
p { margin: 0; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }
.mono { font-family: var(--mono); }
.label { font-family: var(--mono); font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; }

/* ---------- Top bar ---------- */
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 30; background: var(--panel-deep); }
.topbar { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20; background: color-mix(in srgb, var(--panel-deep) 92%, transparent); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border-bottom: 1px solid var(--panel-line); color: var(--panel-text); }
.topbar .wrap { display: flex; align-items: center; gap: 24px; height: 60px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--panel-text); text-decoration: none; font-family: var(--display); font-weight: 700; font-size: 1.5rem; letter-spacing: .08em; }
.brand img { width: 32px; height: 32px; border-radius: 8px; }
.topnav { display: flex; gap: 22px; margin-left: auto; align-items: center; }
.topnav a { color: var(--panel-muted); text-decoration: none; font-size: .95rem; }
.topnav a:hover, .topnav a[aria-current] { color: var(--panel-text); }
.topnav a.pill { color: var(--panel-deep); background: var(--amber); padding: 7px 14px; border-radius: 999px; font-weight: 700; }
@media (max-width: 760px) { .topnav a:not(.pill) { display: none; } }

/* ---------- Buttons ---------- */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 13px 22px; border-radius: 999px; font-weight: 700; text-decoration: none; font-size: 1rem; border: 2px solid transparent; }
.btn.btn-amber { background: var(--amber); color: #1a1003; }
.btn.btn-amber:hover { background: #ffb44c; }
.btn.btn-line { border-color: var(--panel-line); color: var(--panel-text); }
.btn.btn-line:hover { border-color: var(--panel-muted); }

/* ---------- Dark panel band ---------- */
.panel { background: radial-gradient(900px 420px at 80% 0%, rgba(240,160,48,.10), transparent 60%), linear-gradient(170deg, var(--panel), var(--panel-deep) 75%); color: var(--panel-text); }
.panel a { color: var(--teal); }

/* Radio display: the active/standby frequency window used as an eyebrow */
.radio-window { display: inline-flex; align-items: stretch; border: 1px solid var(--panel-line); border-radius: 8px; overflow: hidden; background: #04101f; font-family: var(--mono); font-size: .85rem; }
.radio-window span { padding: 6px 12px; display: flex; align-items: center; gap: 8px; }
.radio-window .com { color: var(--amber); border-right: 1px solid var(--panel-line); }
.radio-window .act { color: #fff; font-size: 1rem; }
.radio-window .stn { color: var(--teal); border-left: 1px solid var(--panel-line); }
.radio-window .rx { width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 8px var(--green); animation: rx 2.4s infinite; }
@keyframes rx { 0%, 55%, 100% { opacity: 1; } 60%, 95% { opacity: .25; } }

/* ---------- Phone frame ---------- */
.phone { width: min(310px, 78vw); max-width: 100%; aspect-ratio: 1320 / 2868; border-radius: 46px; padding: 10px; background: #0c0d10; box-shadow: 0 0 0 2px #2b313b inset, 0 40px 90px rgba(0,0,0,.45); }
.phone img { width: 100%; height: 100%; object-fit: cover; border-radius: 37px; }
.phone.sm { width: min(240px, 70vw); border-radius: 36px; padding: 8px; }
.phone.sm img { border-radius: 29px; }

/* ---------- Radio transcript (used on both pages) ---------- */
.log { display: grid; gap: 0; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); overflow: hidden; }
.tx { display: grid; grid-template-columns: 9.5rem 1fr; gap: 16px; padding: 12px 18px; border-top: 1px solid var(--line); align-items: baseline; }
.tx:first-child { border-top: 0; }
.tx .who { font-family: var(--mono); font-size: .74rem; letter-spacing: .06em; text-transform: uppercase; line-height: 1.35; }
.tx .who small { display: block; color: var(--muted); letter-spacing: .02em; font-size: .7rem; text-transform: none; }
.tx .said { min-width: 0; }
.tx.you .who { color: var(--amber-ink); }
.tx.atc .who { color: var(--teal-ink); }
.tx.other .who { color: var(--muted); }
.tx.coach { background: var(--green-wash); }
.tx.coach .who, .tx.coach .said { color: var(--green-ink); }
.tx.wrong { background: var(--amber-wash); }
.tx em.n { font-style: normal; font-family: var(--mono); font-size: .92em; background: var(--teal-wash); color: var(--teal-ink); padding: 0 4px; border-radius: 4px; }
.tx strong.neg { font-family: var(--mono); font-size: .85em; letter-spacing: .06em; color: var(--red-ink); }
@media (max-width: 560px) { .tx { grid-template-columns: 1fr; gap: 2px; padding: 12px 14px; } }

/* ---------- Notes / callouts ---------- */
.note { border: 1px solid var(--line); border-left: 4px solid var(--teal-ink); background: var(--surface); border-radius: 6px; padding: 14px 18px; display: grid; gap: 4px; }
.note .label { color: var(--teal-ink); }
.note.warn { border-left-color: var(--amber-ink); }
.note.warn .label { color: var(--amber-ink); }

/* Settings paths, like Settings › Speech recognition */
.path { font-family: var(--mono); font-size: .82em; background: var(--surface); border: 1px solid var(--line); padding: 1px 6px; border-radius: 5px; -webkit-box-decoration-break: clone; box-decoration-break: clone; }
kbd { font-family: var(--mono); font-size: .82em; border: 1px solid var(--line); border-bottom-width: 2px; padding: 0 5px; border-radius: 4px; background: var(--surface); }

/* ---------- Footer ---------- */
.foot { background: var(--panel-deep); color: var(--panel-muted); padding-block: 40px; font-size: .9rem; }
.foot .wrap { display: grid; gap: 14px; }
.foot .tag { font-family: var(--display); font-size: 1.6rem; color: var(--panel-text); text-transform: uppercase; letter-spacing: .03em; }
.foot a { color: var(--panel-text); }
.phone.sm { box-shadow: 0 0 0 2px #2b313b inset, 0 18px 40px rgba(6,21,40,.22); }

/* Footer layout: name, origin, links */
.foot .foot-grid { grid-template-columns: minmax(0, 1fr) auto; gap: 28px 56px; align-items: end; }
.foot .legal-links { grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 4px 16px; margin-top: -8px; font-size: .78rem; }
.foot .legal-links a { color: var(--panel-muted); text-decoration: none; }
.foot .legal-links a:hover { color: var(--panel-text); text-decoration: underline; }
.foot .legal { grid-column: 1 / -1; margin-top: -18px; font-size: .78rem; color: var(--panel-muted); opacity: .8; }
.foot .foot-grid > div p { max-width: 34ch; margin-top: 6px; }
.foot .foot-links { grid-column: 1 / -1; border-top: 1px solid var(--panel-line); padding-top: 18px; }
.foot .made { display: grid; gap: 2px; color: var(--panel-text); font-family: var(--display); font-size: 1.35rem; font-weight: 600; text-transform: uppercase; letter-spacing: .03em; }
.foot .made .label { color: var(--amber); font-weight: 400; }
.foot .made a { color: var(--panel-text); text-decoration: none; }
.foot .made a:hover { color: var(--amber); }
.foot-links { display: flex; flex-wrap: wrap; gap: 8px 20px; }
.foot-links a { color: var(--panel-muted); text-decoration: none; }
.foot-links a:hover { color: var(--panel-text); }
@media (max-width: 760px) { .foot .foot-grid { grid-template-columns: 1fr; align-items: start; } }

/* ---------- Video cards: a thumbnail that opens the video on YouTube (no embedded player, so no tracking) ---------- */
.video { display: grid; gap: 12px; color: inherit; text-decoration: none; min-width: 0; }
.video .thumb { position: relative; aspect-ratio: 16 / 9; max-width: 100%; border-radius: 12px; overflow: hidden; background: #04101f; border: 1px solid var(--line); }
.video .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s; }
.video .play { position: absolute; right: 14px; bottom: 14px; width: 60px; height: 60px; border-radius: 50%; background: var(--amber); display: grid; place-items: center; box-shadow: 0 10px 30px rgba(0,0,0,.35); transition: transform .2s; }
.video .play::before { content: ""; margin-left: 5px; border-style: solid; border-width: 11px 0 11px 18px; border-color: transparent transparent transparent #1a1003; }
.video:hover .play { transform: scale(1.08); }
.video:hover .thumb img { transform: scale(1.02); }
.video .cap { display: grid; gap: 4px; }
.video .cap b { font-family: var(--display); font-size: 1.4rem; font-weight: 600; text-transform: uppercase; letter-spacing: .02em; line-height: 1.1; }
.video .cap span { color: var(--muted); font-size: .95rem; }
.video .cap .yt { font-family: var(--mono); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--teal-ink); }
.video:hover .cap b { text-decoration: underline; text-underline-offset: 4px; }
@media (max-width: 560px) { .video .play { width: 48px; height: 48px; right: 10px; bottom: 10px; } .video .play::before { border-width: 9px 0 9px 14px; margin-left: 4px; } }

/* ---------- Pop-up video player (assets/video.js) ---------- */
.player { padding: 0; border: 0; background: transparent; width: min(1100px, calc(100vw - 32px)); max-width: none; max-height: none; overflow: visible; color: var(--panel-text); }
.player::backdrop { background: rgba(3, 9, 18, .88); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); }
.player-box { display: grid; gap: 10px; }
.player-bar { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.player-title { font-family: var(--display); font-size: 1.3rem; font-weight: 600; text-transform: uppercase; letter-spacing: .03em; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.player-close { flex: none; width: 44px; height: 44px; border-radius: 50%; border: 1px solid var(--panel-line); background: var(--panel-deep); color: var(--panel-text); font-size: 1.1rem; cursor: pointer; }
.player-close:hover { border-color: var(--amber); color: var(--amber); }
.player-frame { aspect-ratio: 16 / 9; max-width: 100%; max-height: calc(100vh - 120px); margin-inline: auto; width: 100%; background: #000; border-radius: 12px; overflow: hidden; box-shadow: 0 40px 100px rgba(0,0,0,.6); }
.player-frame iframe { width: 100%; height: 100%; border: 0; display: block; }
html.player-open { overflow: hidden; }

/* App Store badge: hidden until the app is live (Tools/website/set-app-store-id.py turns it on). */
.appstore:not([hidden]) { display: inline-block; line-height: 0; }
.appstore img { height: 48px; width: auto; }
.foot .appstore img { height: 40px; }