/* Radio read-along: book page + radio deck. Light/dark tokens. */
:root {
  --bg: #f4ede0; --paper: #fbf6ec; --ink: #2a2420; --mute: #81756a; --line: #e0d4c0;
  --acc: #a5432c; --acc-soft: #f1d9cc; --word: #ffe3a3; --para: rgba(165, 67, 44, .07);
  --deck: #2b2420; --deck-ink: #f3e7d3; --deck-mute: #b7a690; --dial: #f0dfbf; --dial-ink: #4a3b2e; --needle: #d33a1f;
  --lamp: #ff5a36; --shadow: 0 -8px 30px rgba(40, 25, 10, .18);
  --serif: "Literata", "Iowan Old Style", Georgia, serif;
  --mono: "Space Mono", ui-monospace, Menlo, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #171412; --paper: #1e1a17; --ink: #ece2d2; --mute: #a2937f; --line: #352e28;
    --acc: #ec8f6e; --acc-soft: #3b2820; --word: #6b4b14; --para: rgba(236, 143, 110, .09);
    --deck: #0f0d0b; --deck-ink: #f3e7d3; --deck-mute: #9c8c78; --dial: #2c241d; --dial-ink: #e6d2b0;
    --shadow: 0 -8px 30px rgba(0, 0, 0, .5);
  }
}
:root[data-theme="dark"] {
  --bg: #171412; --paper: #1e1a17; --ink: #ece2d2; --mute: #a2937f; --line: #352e28;
  --acc: #ec8f6e; --acc-soft: #3b2820; --word: #6b4b14; --para: rgba(236, 143, 110, .09);
  --deck: #0f0d0b; --deck-ink: #f3e7d3; --deck-mute: #9c8c78; --dial: #2c241d; --dial-ink: #e6d2b0;
  --shadow: 0 -8px 30px rgba(0, 0, 0, .5);
}
* { box-sizing: border-box; }
html { scroll-padding: 120px 0 220px; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 19px/1.75 var(--serif); -webkit-font-smoothing: antialiased; }
a { color: var(--acc); }

/* ---------- Home ---------- */
.home { max-width: 760px; margin: 0 auto; padding: 56px 16px 80px; }
.home .kicker { font: 700 12px/1 var(--mono); letter-spacing: .25em; text-transform: uppercase; color: var(--acc); }
.home h1 { font-size: clamp(2rem, 6vw, 3.2rem); line-height: 1.1; margin: 14px 0 6px; font-weight: 700; }
.home .sub { color: var(--mute); margin: 0 0 36px; font-style: italic; }
.chapters { list-style: none; padding: 0; margin: 0; border-top: 1px solid var(--line); }
.chapters li { border-bottom: 1px solid var(--line); }
.chapters a, .chapters .soon { display: grid; grid-template-columns: 3.2em 1fr auto; gap: 14px; align-items: baseline; padding: 18px 4px; text-decoration: none; color: var(--ink); }
.chapters a:hover { background: var(--para); }
.chapters .n { font: 700 14px var(--mono); color: var(--acc); }
.chapters .t { font-size: 1.15rem; }
.chapters .d { font: 13px var(--mono); color: var(--mute); white-space: nowrap; }
.chapters .soon { color: var(--mute); }
.freq { font: 12px var(--mono); color: var(--mute); margin-top: 40px; }

/* ---------- Chapter text ---------- */
.top { position: sticky; top: 0; z-index: 5; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.top div { max-width: 760px; margin: auto; padding: 10px 16px; display: flex; justify-content: space-between; align-items: center; gap: 12px; font: 13px var(--mono); }
.top a { text-decoration: none; }
.top button { font: inherit; background: none; border: 1px solid var(--line); color: var(--ink); border-radius: 999px; padding: 4px 10px; cursor: pointer; }
article { max-width: 680px; margin: 0 auto; padding: 40px 16px 260px; }
article h1 { font-size: clamp(1.7rem, 5vw, 2.4rem); line-height: 1.2; margin: 0 0 28px; }
article p { margin: 0 0 1.05em; padding: 2px 10px; margin-left: -10px; margin-right: -10px; border-radius: 6px; transition: background .4s; }
article p.on, article blockquote.on, article h1.on { background: var(--para); }
article blockquote { margin: 1.2em 0; padding: 12px 18px; border-left: 3px solid var(--acc); background: var(--paper); border-radius: 0 8px 8px 0; transition: background .4s; }
article blockquote p { margin: 0; padding: 0; }
hr.scene { border: 0; text-align: center; margin: 2em 0; color: var(--mute); }
hr.scene::after { content: "∗  ∗  ∗"; letter-spacing: .4em; }
.w { cursor: pointer; border-radius: 3px; transition: background .12s; }
.w:hover { text-decoration: underline dotted var(--mute); }
.w.on { background: var(--word); box-shadow: 0 0 0 2px var(--word); }
.seg[data-sp]:not([data-sp="narrator"]) { color: color-mix(in srgb, var(--ink) 92%, var(--sp, var(--acc))); }
.seg.on[data-sp]:not([data-sp="narrator"]) { color: var(--ink); }
.nav { display: flex; justify-content: space-between; gap: 12px; margin-top: 48px; padding-top: 18px; border-top: 1px solid var(--line); font: 14px var(--mono); }
.nav a { text-decoration: none; }

/* ---------- Radio deck ---------- */
.deck { position: fixed; left: 0; right: 0; bottom: 0; z-index: 10; background: var(--deck); color: var(--deck-ink); box-shadow: var(--shadow); padding: 12px 16px calc(12px + env(safe-area-inset-bottom)); }
.deck .in { max-width: 760px; margin: auto; display: grid; gap: 10px; }
.dial { position: relative; height: 46px; background: var(--dial); border-radius: 8px; cursor: pointer; overflow: hidden; touch-action: none; box-shadow: inset 0 2px 6px rgba(0, 0, 0, .25); }
.dial .ticks { position: absolute; inset: 0; background-image: repeating-linear-gradient(90deg, var(--dial-ink) 0 1px, transparent 1px 2%), repeating-linear-gradient(90deg, var(--dial-ink) 0 1px, transparent 1px 10%); background-size: 100% 9px, 100% 16px; background-repeat: no-repeat; background-position: 0 0, 0 0; opacity: .5; }
.dial .labels { position: absolute; left: 0; right: 0; bottom: 4px; display: flex; justify-content: space-between; padding: 0 6px; font: 10px var(--mono); color: var(--dial-ink); opacity: .75; pointer-events: none; }
.dial .done { position: absolute; left: 0; top: 0; bottom: 0; background: color-mix(in srgb, var(--needle) 14%, transparent); pointer-events: none; }
.dial .needle { position: absolute; top: 3px; bottom: 3px; width: 3px; margin-left: -1px; background: var(--needle); border-radius: 2px; box-shadow: 0 0 8px var(--needle); pointer-events: none; transition: left .1s linear; }
.row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.btn { font: 700 13px var(--mono); background: transparent; color: var(--deck-ink); border: 1px solid #5a4b3e; border-radius: 999px; height: 36px; min-width: 36px; padding: 0 12px; cursor: pointer; }
.btn:hover { border-color: var(--deck-ink); }
.btn.play { width: 52px; height: 52px; border-radius: 50%; background: var(--needle); border: 0; color: #fff; font-size: 18px; }
.btn[aria-pressed="false"] { opacity: .55; }
.onair { display: inline-flex; align-items: center; gap: 6px; font: 700 11px var(--mono); letter-spacing: .18em; color: var(--deck-mute); }
.onair i { width: 9px; height: 9px; border-radius: 50%; background: #5a4b3e; display: inline-block; }
.playing .onair { color: var(--lamp); }
.playing .onair i { background: var(--lamp); box-shadow: 0 0 10px var(--lamp); animation: lamp 1.6s ease-in-out infinite; }
@keyframes lamp { 50% { opacity: .55; } }
@media (prefers-reduced-motion: reduce) { .playing .onair i { animation: none; } .dial .needle { transition: none; } }
.who { font: 13px var(--mono); color: var(--deck-ink); flex: 1; min-width: 120px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.who b { color: var(--sp, var(--deck-ink)); }
.time { font: 13px var(--mono); color: var(--deck-mute); }
@media (max-width: 560px) {
  body { font-size: 17px; }
  .btn { height: 34px; padding: 0 9px; font-size: 12px; }
  .btn.play { width: 46px; height: 46px; }
  .who { order: 9; flex-basis: 100%; }
}