/* Scarborough Amateur Radio Society – G4BP
   Colours are taken from the club logo. */
:root {
  --navy: #173452;
  --signal: #429cd0;
  --signal-dark: #1f6fa3;  /* signal blue darkened for text contrast */
  --paper: #ffffff;
  --mist: #edf4fa;
  --rule: #c8d9e8;
  --text: #22303f;
  --muted: #56677a;

  /* Built-in device fonts only: nothing is downloaded from third parties. */
  --display: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --body: Georgia, Cambria, "Times New Roman", serif;
  --mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;

  --wrap: 68rem;
  --measure: 38rem;
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font-family: var(--body);
  font-size: 1.125rem;
  line-height: 1.6;
}

img { max-width: 100%; height: auto; }
[hidden] { display: none !important; }

a { color: var(--signal-dark); text-underline-offset: 0.15em; }
a:hover { color: var(--navy); }
:focus-visible { outline: 3px solid var(--signal); outline-offset: 2px; }

h1, h2, h3 {
  font-family: var(--display);
  color: var(--navy);
  line-height: 1.2;
  font-weight: 700;
}
h1 { font-size: clamp(1.9rem, 4vw, 2.75rem); margin: 0 0 1rem; letter-spacing: -0.01em; }
h2 { font-size: 1.5rem; margin: 2.5rem 0 0.75rem; }
h3 { font-size: 1.125rem; margin: 0 0 0.25rem; }

p, ul, ol, dl { margin: 0 0 1rem; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 1.25rem; }
.prose { max-width: var(--measure); }
.lead { font-size: 1.3rem; line-height: 1.5; color: var(--navy); }
.small { font-size: 0.9rem; }
.muted { color: var(--muted); }

.skip {
  position: absolute; left: -999px; top: 0;
  background: var(--navy); color: #fff; padding: 0.5rem 1rem; z-index: 10;
}
.skip:focus { left: 0; }

/* ---------- Header ---------- */
.header-inner {
  display: flex; flex-wrap: wrap; align-items: center;
  justify-content: space-between; gap: 1rem 2rem;
  padding-top: 1rem; padding-bottom: 1rem;
}
.brand {
  display: flex; align-items: center; gap: 0.9rem;
  text-decoration: none; color: var(--navy);
}
.brand img { width: 72px; height: 72px; flex: none; }
.brand-text { display: flex; flex-direction: column; }
.brand-name { font-family: var(--display); font-weight: 700; font-size: 1.1rem; line-height: 1.25; max-width: 16rem; }
.brand-call { font-family: var(--display); font-weight: 700; color: var(--signal-dark); font-size: 0.95rem; letter-spacing: 0.08em; }

.site-nav ul {
  list-style: none; margin: 0; padding: 0;
  display: flex; flex-wrap: wrap; gap: 0.25rem 1.25rem;
}
.site-nav a {
  font-family: var(--display); font-weight: 600; font-size: 0.95rem;
  color: var(--navy); text-decoration: none;
  display: inline-block; padding: 0.35rem 0;
  border-bottom: 3px solid transparent;
}
.site-nav a:hover { border-bottom-color: var(--rule); }
.site-nav a[aria-current="page"] { border-bottom-color: var(--signal); }

/* The callsign in Morse: the one decorative element on the site */
.morse-strip {
  background: var(--navy);
  display: flex; align-items: center; gap: 1.4rem;
  padding: 0.7rem max(1.25rem, calc((100% - var(--wrap)) / 2 + 1.25rem));
}
.morse-strip .ch { display: flex; align-items: center; gap: 0.4rem; }
.morse-strip i { display: block; height: 0.5rem; border-radius: 0.25rem; background: var(--signal); }
.morse-strip .di { width: 0.5rem; }
.morse-strip .da { width: 1.6rem; }
.morse-label {
  margin-left: auto;
  font-family: var(--display); font-weight: 700; font-size: 0.85rem;
  color: #fff; letter-spacing: 0.12em;
}

/* ---------- Main ---------- */
main.wrap { padding-top: 2.75rem; padding-bottom: 4rem; min-height: 60vh; }

/* Home */
.home-top {
  display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  gap: 2.5rem 3.5rem; align-items: start;
}
.facts {
  border-left: 4px solid var(--signal);
  padding: 0.25rem 0 0.25rem 1.5rem;
}
.facts dt {
  font-family: var(--display); font-weight: 700; color: var(--navy);
  font-size: 1rem; margin-top: 1.25rem;
}
.facts dt:first-child { margin-top: 0; }
.facts dd { margin: 0.2rem 0 0; }
.freq { font-family: var(--display); font-weight: 700; font-size: 1.35rem; color: var(--navy); font-variant-numeric: tabular-nums; }

.home-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr));
  gap: 0 3.5rem; margin-top: 1rem;
}

/* Events */
.event-list { list-style: none; padding: 0; margin: 0; }
.event {
  display: grid; grid-template-columns: 5.5rem 1fr; gap: 1rem;
  padding: 1rem 0; border-top: 1px solid var(--rule);
}
.event time { font-family: var(--display); color: var(--navy); line-height: 1.1; }
.ev-day { display: block; font-size: 1.9rem; font-weight: 700; }
.ev-month { font-size: 0.85rem; font-weight: 600; color: var(--muted); }
.ev-meta { color: var(--muted); font-size: 1rem; margin-bottom: 0.4rem; }
.event p:last-child { margin-bottom: 0; }

/* Definition tables (repeater) */
.spec { display: grid; grid-template-columns: max-content 1fr; gap: 0.6rem 2rem; max-width: 40rem; }
.spec dt { font-family: var(--display); font-weight: 600; color: var(--navy); font-size: 1rem; }
.spec dd { margin: 0; font-variant-numeric: tabular-nums; }

/* Silent Keys */
.sk-list { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(20rem, 1fr)); gap: 0 3rem; }
.sk {
  display: grid; grid-template-columns: 4.5rem 1fr; gap: 0 1.1rem;
  padding: 1.25rem 0; border-top: 1px solid var(--rule);
}
.sk-pic { position: relative; width: 4.5rem; height: 4.5rem; }
.sk-photo { position: absolute; inset: 0; }
.sk-photo, .sk-mark {
  width: 4.5rem; height: 4.5rem; border-radius: 50%; object-fit: cover;
}
.sk-mark {
  background: var(--mist); color: var(--navy);
  display: flex; align-items: center; justify-content: center; gap: 0.2rem;
}
.sk-mark i { display: block; height: 0.3rem; border-radius: 0.15rem; background: var(--signal); }
.sk-mark .di { width: 0.3rem; }
.sk-mark .da { width: 0.95rem; }
.sk-call { font-family: var(--display); font-weight: 700; color: var(--signal-dark); font-size: 0.95rem; letter-spacing: 0.04em; }
.sk-year { color: var(--muted); font-size: 0.95rem; }
.sk p { font-size: 1rem; margin: 0.5rem 0 0; }

/* Morse */
.level-nav { display: flex; flex-wrap: wrap; gap: 0.5rem 1.5rem; margin: 1.5rem 0 0; padding: 0; list-style: none; font-family: var(--display); font-weight: 600; }
.level { margin-top: 3rem; }
.level > h2 { margin-top: 0; }
.exercise {
  display: grid; grid-template-columns: 3rem minmax(9rem, 14rem) minmax(0, 1fr);
  gap: 0.5rem 1.25rem; align-items: center;
  padding: 0.9rem 0; border-top: 1px solid var(--rule);
}
.ex-n { font-family: var(--display); font-weight: 700; color: var(--muted); font-variant-numeric: tabular-nums; }
.ex-new { font-family: var(--display); font-weight: 700; color: var(--navy); font-size: 1.05rem; }
.exercise audio { width: 100%; height: 2.5rem; }
.exercise details { grid-column: 2 / -1; }
.exercise summary { cursor: pointer; font-size: 0.95rem; color: var(--signal-dark); }
.practice-text { font-family: var(--mono); font-size: 0.9rem; line-height: 1.7; word-spacing: 0.3em; margin: 0.5rem 0 0; overflow-wrap: anywhere; }

.alphabet {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(7.5rem, 1fr));
  gap: 0.25rem 1.5rem; padding: 0; list-style: none; max-width: 52rem;
}
.alphabet li { display: flex; gap: 0.75rem; align-items: baseline; }
.alphabet b { font-family: var(--display); color: var(--navy); min-width: 1.2rem; }
.alphabet code { font-family: var(--mono); font-size: 1.05rem; letter-spacing: 0.15em; color: var(--text); }

/* Gallery */
.gallery {
  list-style: none; padding: 0; margin: 2rem 0 0;
  display: grid; grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr)); gap: 2rem 1.5rem;
}
.gallery a { display: block; }
.gallery img {
  display: block; width: 100%; aspect-ratio: 4 / 3; object-fit: cover;
  border-radius: 4px; background: var(--mist);
}
.gallery p { margin: 0.5rem 0 0; font-size: 1rem; line-height: 1.4; }
.gallery p span { display: block; font-size: 0.9rem; color: var(--muted); }

/* Links */
.link-list { list-style: none; padding: 0; max-width: var(--measure); }
.link-list li { padding: 0.6rem 0; border-top: 1px solid var(--rule); }
.link-list a { font-family: var(--display); font-weight: 600; }
.link-list span { display: block; font-size: 1rem; color: var(--muted); }

/* Forms */
.form { max-width: 34rem; display: grid; gap: 1.1rem; }
.form label { display: grid; gap: 0.35rem; font-family: var(--display); font-weight: 600; font-size: 0.95rem; color: var(--navy); }
.form input, .form textarea {
  font: inherit; font-size: 1rem; color: var(--text);
  padding: 0.6rem 0.75rem; border: 1px solid #9fb6cb; border-radius: 4px; background: #fff;
}
.form textarea { min-height: 9rem; resize: vertical; }
.button {
  justify-self: start;
  font-family: var(--display); font-weight: 700; font-size: 1rem;
  background: var(--navy); color: #fff; border: 0; border-radius: 4px;
  padding: 0.75rem 1.4rem; cursor: pointer; text-decoration: none;
}
.button:hover { background: var(--signal-dark); color: #fff; }
.hp { position: absolute; left: -5000px; }

/* ---------- Footer ---------- */
.site-footer { background: var(--mist); border-top: 1px solid var(--rule); font-size: 1rem; }
.footer-inner { padding-top: 1.75rem; padding-bottom: 1.75rem; }
.footer-inner p { margin-bottom: 0.5rem; max-width: 44rem; }
.footer-inner a { margin-right: 1.25rem; }

/* ---------- Small screens ---------- */
@media (max-width: 760px) {
  body { font-size: 1.0625rem; }
  .home-top { grid-template-columns: 1fr; }
  .brand img { width: 56px; height: 56px; }
  .brand-name { font-size: 1rem; }
  .morse-strip { gap: 0.9rem; overflow: hidden; }
  .morse-strip .ch { gap: 0.3rem; }
  .morse-strip .da { width: 1.15rem; }
  .morse-label { display: none; }
  .exercise { grid-template-columns: 2.25rem 1fr; }
  .exercise audio { grid-column: 1 / -1; }
  .exercise details { grid-column: 1 / -1; }
  .spec { grid-template-columns: 1fr; gap: 0.1rem; }
  .spec dd { margin-bottom: 0.6rem; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; }
}