/* My Conversations with JC — locked design (2026-07-17): "Editorial Print".
   Warm paper, serif voice, hairline masthead, typeset dialogue cards,
   real-face avatars, reading-band spotlight, returning header, auto dark
   mode, fully responsive. Fonts are system-serif for now; a self-hosted
   WOFF2 face (Fraunces/Newsreader class) is the planned upgrade — never a
   font CDN (GDPR). */

:root {
  --bg: #faf7f2;
  --ink: #2a251d;
  --muted: #7a6f60;
  --petrol: #1b5a6e;
  --petrol-ink: #1b5a6e;
  --jc-bubble: #eef3f6;
  --jc-ink: #22343e;
  --m-bubble: #eff5e9;
  --m-ink: #263a1c;
  --line: #ddd3c4;
  --focus-dim: 0.45;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #191512;
    --ink: #e8dfd2;
    --muted: #a19582;
    --petrol: #7fb4c4;
    --petrol-ink: #7fb4c4;
    --jc-bubble: #232d33;
    --jc-ink: #cfdfe8;
    --m-bubble: #242e1e;
    --m-ink: #d5e4c8;
    --line: #3a332a;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 18px/1.7 "Iowan Old Style", Palatino, "Palatino Linotype", Georgia, serif;
  /* Sticky footer: main grows, footer rides the true bottom. */
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
main { flex: 1 0 auto; width: 100%; max-width: 780px; margin: 0 auto; padding: 1.5rem clamp(1rem, 4vw, 2rem) 0; }

/* --- masthead + footer ------------------------------------------------------ */
.banner {
  background: var(--bg);
  color: var(--petrol-ink);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.6rem clamp(1rem, 4vw, 3rem) 1.2rem;
  border-bottom: 1px solid var(--line);
  flex-wrap: wrap;
}
.banner a { color: var(--petrol-ink); text-decoration: none; }
.banner a:hover { text-decoration: underline; }
.site-title { font-size: 1.6rem; font-style: italic; font-weight: 600; letter-spacing: 0.005em; }
.banner nav {
  display: flex;
  gap: 1.5rem;
  font-family: -apple-system, "Segoe UI", sans-serif;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

/* Substack-style header: sticks to the top, hides while scrolling down,
   reappears the moment you scroll up (script toggles .nav-hidden). */
header.banner {
  position: sticky;
  top: 0;
  z-index: 20;
  transition: transform 0.25s ease;
}
header.banner.nav-hidden { transform: translateY(-100%); }
@media (prefers-reduced-motion: reduce) {
  header.banner { transition: none; }
}

.footer {
  margin-top: 4rem;
  background: var(--bg);
  color: var(--muted);
  border-top: 1px solid var(--line);
  border-bottom: none;
  font-family: -apple-system, "Segoe UI", sans-serif;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  justify-content: center;
  gap: 2rem;
}
.footer a { color: var(--muted); }

/* --- piece head ------------------------------------------------------------- */
/* Date sits ABOVE the title (nav.al-style eyebrow). */
.piece-head time {
  display: block;
  margin-bottom: 0.4rem;
  font-family: -apple-system, "Segoe UI", sans-serif;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
}
.piece-head h1 { margin: 0; font-size: 2.1rem; font-weight: 600; letter-spacing: -0.01em; }
.piece-head time, .idx-date { color: var(--muted); }
.idx-date { font-size: 0.9rem; }
.piece-head { margin-bottom: 1.75rem; }

/* Lede: the piece's essence (frontmatter tldr), unlabeled. */
.lede {
  color: var(--muted);
  font-style: italic;
  font-size: 1.15rem;
  line-height: 1.6;
  margin: -0.75rem 0 2rem;
}

/* --- fixed edge navigation --------------------------------------------------- */
.edge-nav {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  color: var(--muted);
  text-decoration: none;
  font-family: -apple-system, "Segoe UI", sans-serif;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  line-height: 1.35;
}
.edge-nav:hover { color: var(--ink); }
.nav-prev { left: clamp(0.75rem, 2.5vw, 2rem); }
.nav-next { right: clamp(0.75rem, 2.5vw, 2rem); text-align: right; }
.edge-arrow { display: block; font-size: 1.2rem; }

@media (max-width: 980px) {
  .edge-label { display: none; }
  .edge-nav {
    background: var(--petrol);
    color: var(--bg);
    width: 2.4rem; height: 2.4rem;
    border-radius: 50%;
    display: grid; place-items: center;
    opacity: 0.85;
  }
  .edge-nav:hover { color: var(--bg); opacity: 1; }
  .edge-arrow { font-size: 1.1rem; }
  .nav-prev { left: 0.5rem; }
  .nav-next { right: 0.5rem; }
}

/* --- dialogue ---------------------------------------------------------------- */
.dialogue { display: flex; flex-direction: column; gap: 1.35rem; }

.turn { display: flex; align-items: flex-start; gap: 0.65rem; }
.turn-m { flex-direction: row-reverse; }

.avatar {
  flex: 0 0 auto;
  width: 2.4rem; height: 2.4rem;
  border-radius: 50%;
  display: grid; place-items: center;
  font-size: 0.8rem; font-weight: 700;
  margin-top: 0.2rem;
}
/* Real faces inside the circles; the letter stays in the markup as a
   no-CSS fallback (color:transparent hides it over the photo). */
.avatar-jc {
  background: url("/assets/avatar-jc.jpg") center / cover no-repeat, var(--jc-bubble);
  color: transparent;
  border: 1px solid var(--line);
}
.avatar-m {
  background: url("/assets/avatar-m.jpg") center / cover no-repeat, var(--m-bubble);
  color: transparent;
  border: 1px solid var(--line);
}

/* Typeset dialogue cards: quiet fills, hairlines, modest rounding. */
.bubble {
  border-radius: 0.6rem;
  border: 1px solid var(--line);
  padding: 1rem 1.25rem;
  max-width: 82%;
  transition: opacity 0.35s ease;
}
.bubble p { margin: 0 0 0.7em; }
.bubble p:last-child { margin-bottom: 0; }
.bubble-jc { background: var(--jc-bubble); color: var(--jc-ink); }
.bubble-m  { background: var(--m-bubble);  color: var(--m-ink); }
.bubble code { font-size: 0.88em; background: rgba(0,0,0,0.08); padding: 0.1em 0.35em; border-radius: 0.3em; }

/* Reading-band spotlight (script marks .in-focus; no-JS = full alpha). */
html.js .dialogue .bubble { opacity: var(--focus-dim); }
html.js .dialogue .turn.in-focus .bubble { opacity: 1; }
@media (prefers-reduced-motion: reduce) {
  .bubble { transition: none; }
  html { scroll-behavior: auto; }
}

.narration {
  color: var(--muted);
  font-style: italic;
  font-size: 1.02rem;
  margin: 0.25rem 0;
  text-align: center;
}

/* --- related trail ------------------------------------------------------------ */
.related { margin-top: 3.5rem; border-top: 1px solid var(--line); padding-top: 1.5rem; }
.related h2 {
  margin: 0 0 1rem;
  font-family: -apple-system, "Segoe UI", sans-serif;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--muted);
}
.related ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.65rem; }
.related a { text-decoration: none; color: var(--ink); }
.related a:hover .rel-title { text-decoration: underline; }
.rel-date {
  color: var(--muted);
  font-family: -apple-system, "Segoe UI", sans-serif;
  font-size: 0.85rem;
  margin-right: 0.5rem;
  font-variant-numeric: tabular-nums;
}

/* --- index --------------------------------------------------------------------- */
.index { list-style: none; padding: 0; display: flex; flex-direction: column; gap: 1.4rem; }
.index a { text-decoration: none; color: var(--ink); display: block; }
.idx-title { display: block; font-size: 1.2rem; font-weight: 600; }
.idx-title:hover { text-decoration: underline; }
.idx-tldr { margin: 0.25rem 0 0; color: var(--muted); font-style: italic; }

/* --- mobile ---------------------------------------------------------------------- */
@media (max-width: 640px) {
  body { font-size: 16.5px; }
  .piece-head h1 { font-size: 1.7rem; }
  .bubble { max-width: 88%; }
  .avatar { width: 2rem; height: 2rem; font-size: 0.7rem; }
  .banner nav { gap: 1rem; }
  .footer { flex-direction: column; gap: 0.4rem; text-align: center; }
}