/* Challis & Company site: one page. Light and dark follow the reader's system
   setting. Company navy and Raleway from the brand artwork; layout and greys as on
   the Widen and Puzzlement sites. */
:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --band: #f3f5fa;
  --card: #ffffff;
  --ink: #141a2e;
  --soft: #4f5670;
  --faint: #8a90a6;
  --rule: #e3e6ef;
  --blue: #2f6fe8;
  --blue-ink: #1f56c3;
  --brand: #191970;
  --shadow: 0 2px 12px rgba(20, 26, 46, .08);
  --shadow-up: 0 10px 28px rgba(20, 26, 46, .14);
  --icon-shadow: 0 8px 22px rgba(20, 26, 46, .22);

  /* one accent per app, taken from each app's own site */
  --puzzlement: #580470;
  --widen: #2f6fe8;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1020;
    --band: #141932;
    --card: #1a2040;
    --ink: #eef0f7;
    --soft: #b4b9cc;
    --faint: #7d839b;
    --rule: #272e52;
    --blue: #5b93ff;
    --blue-ink: #8ab2ff;
    --brand: #e4e3fa;
    --shadow: 0 2px 14px rgba(0, 0, 0, .35);
    --shadow-up: 0 12px 30px rgba(0, 0, 0, .5);
    --icon-shadow: 0 8px 22px rgba(0, 0, 0, .45);

    --puzzlement: #c08ad6;
    --widen: #5b93ff;
  }
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: Raleway, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-variant-numeric: lining-nums;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  min-height: 100vh;
  display: flex; flex-direction: column;
}
main { flex: 1; }
a { color: var(--blue-ink); }
.wrap { max-width: 920px; margin: 0 auto; padding: 0 20px; }

/* ---------- Top ---------- */
.top { padding: 72px 0 40px; }
.top h1 { line-height: 0; color: var(--brand); }
.wordmark { width: min(560px, 100%); height: auto; }
.lede { font-size: 1.35rem; line-height: 1.4; font-weight: 600; margin-top: 22px; color: var(--soft); max-width: 680px; }

/* ---------- Apps ---------- */
.apps { background: var(--band); padding: 56px 0 64px; }
.kicker {
  display: block; font-size: .78rem; font-weight: 700; letter-spacing: .12em;
  text-transform: uppercase; color: var(--faint); margin-bottom: 18px;
}
.list { list-style: none; display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.app {
  display: flex; flex-direction: column; height: 100%;
  background: var(--card); border-radius: 18px; padding: 26px;
  box-shadow: var(--shadow); border-top: 4px solid var(--accent);
  color: inherit; text-decoration: none;
  transition: transform .15s ease, box-shadow .15s ease;
}
.app:hover { transform: translateY(-2px); box-shadow: var(--shadow-up); }
.app:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
.app header { display: flex; align-items: center; gap: 16px; }
.app img { width: 72px; height: 72px; border-radius: 17px; box-shadow: var(--icon-shadow); flex: 0 0 auto; }
.app h2 { font-size: 1.45rem; font-weight: 700; line-height: 1.15; }
.app h2 small { display: block; font-size: .9rem; font-weight: 500; color: var(--faint); letter-spacing: 0; margin-top: 3px; }
.app .tag { margin-top: 18px; font-weight: 700; color: var(--accent); }
.app p { color: var(--soft); font-size: .97rem; margin-top: 6px; }
.app .meta {
  margin-top: auto; padding-top: 20px;
  display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 8px 16px;
  font-size: .88rem;
}
.app .status { color: var(--faint); }
.app .go { font-weight: 600; color: var(--accent); white-space: nowrap; }
.p-puzzlement { --accent: var(--puzzlement); }
.p-puzzlement h2 { font-style: italic; }
.p-widen { --accent: var(--widen); }

/* ---------- Footer ---------- */
footer { border-top: 1px solid var(--rule); padding: 34px 0 48px; color: var(--faint); font-size: .86rem; text-align: center; }
footer .legal { max-width: 640px; margin: 10px auto 0; font-size: .78rem; }

/* ---------- Narrow screens ---------- */
@media (max-width: 720px) {
  .list { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .top { padding: 48px 0 32px; }
  .lede { font-size: 1.15rem; }
  .apps { padding: 40px 0 48px; }
  .app { padding: 22px; }
  .app img { width: 60px; height: 60px; border-radius: 14px; }
}