/* ============================================================================
   Iwao — The Particle Heir · Volume One reading experience
   Shared design system for the story index (story.html) and full chapter pages.
   Cohesive with index.html: stone-night ground, ember/gold accents, ink-on-
   parchment reading panel, dust + strata motifs. Reading-first, mobile-safe.
   ============================================================================ */
:root{
  --night:#0c0a09; --night2:#15110d; --paper:#f4ecda; --paper2:#e9ddc2;
  --ink:#171310; --ink-dim:#5a5043; --ember:#e8541d; --ember-soft:#ffae6b;
  --gold:#cf9b3a; --line:rgba(207,155,58,.25); --line-ink:rgba(23,19,16,.18);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;color:var(--paper);font-family:'Shippori Mincho',Georgia,serif;line-height:1.75;
  background:
    radial-gradient(120% 70% at 50% -10%, #1b150f 0%, transparent 55%),
    linear-gradient(180deg,#0c0a09,#0a0807 60%,#0c0a09),
    repeating-linear-gradient(0deg, transparent 0 38px, rgba(207,155,58,.022) 38px 39px); /* faint strata */
  background-attachment:fixed;overflow-x:hidden;
}
/* drifting dust */
body::before{content:"";position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.5;
  background-image:radial-gradient(rgba(255,174,107,.20) 1px,transparent 1.4px);background-size:120px 120px;
  animation:dust 60s linear infinite}
@keyframes dust{from{background-position:0 0}to{background-position:120px 600px}}
.vignette{position:fixed;inset:0;z-index:1;pointer-events:none;background:radial-gradient(125% 90% at 50% 0%,transparent 45%,rgba(0,0,0,.62) 100%)}
#bar{position:fixed;top:0;left:0;height:3px;width:0;z-index:60;background:linear-gradient(90deg,var(--gold),var(--ember));box-shadow:0 0 14px var(--ember)}

.wrap{position:relative;z-index:2;max-width:820px;margin:0 auto;padding:0 22px}
a{color:var(--ember-soft)}
.mono{font-family:'JetBrains Mono',ui-monospace,monospace}

/* ---- top bar (both pages) ---- */
.topbar{position:relative;z-index:5;display:flex;align-items:center;justify-content:space-between;gap:12px;
  max-width:820px;margin:0 auto;padding:18px 22px}
.topbar .home{font-family:'Cinzel',serif;font-weight:900;letter-spacing:.16em;color:var(--paper);text-decoration:none;font-size:15px}
.topbar .home b{color:var(--ember)}
.topbar nav{display:flex;gap:10px;flex-wrap:wrap}
.btn{font-family:'JetBrains Mono',monospace;font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--ember-soft);
  text-decoration:none;border:1px solid var(--line);padding:9px 13px;border-radius:3px;transition:.2s;background:rgba(20,16,13,.5);white-space:nowrap}
.btn:hover{color:#fff;border-color:var(--ember);box-shadow:0 0 18px rgba(232,84,29,.3);transform:translateY(-1px)}
.btn.solid{background:rgba(232,84,29,.16);border-color:var(--ember);color:#fff}

/* ============================ STORY INDEX ============================ */
.idx-hero{position:relative;z-index:2;text-align:center;padding:46px 22px 8px;max-width:820px;margin:0 auto}
.idx-hero .eyebrow{font-family:'JetBrains Mono',monospace;letter-spacing:.4em;text-transform:uppercase;font-size:11px;color:var(--ember-soft)}
.idx-hero h1{font-family:'Anton',sans-serif;font-size:clamp(44px,11vw,104px);line-height:.86;margin:12px 0 0;letter-spacing:.02em;
  background:linear-gradient(180deg,#fff7ea,var(--paper) 55%,var(--gold));-webkit-background-clip:text;background-clip:text;color:transparent;
  text-shadow:0 0 60px rgba(232,84,29,.25)}
.idx-hero .vol{font-family:'Cinzel',serif;font-weight:700;letter-spacing:.3em;color:var(--paper);margin-top:8px;font-size:clamp(14px,3.4vw,22px)}
.idx-hero .blurb{max-width:600px;margin:16px auto 0;color:var(--paper2);font-size:16.5px}
.idx-hero .cta{margin-top:22px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.howto{max-width:680px;margin:26px auto 0;border:1px solid var(--line);border-radius:8px;background:rgba(20,16,13,.5);
  padding:14px 18px;color:var(--paper2);font-size:14px}
.howto b{color:var(--gold);font-family:'JetBrains Mono',monospace;font-size:11px;letter-spacing:.2em;text-transform:uppercase;display:block;margin-bottom:6px}

.arc{position:relative;z-index:2;max-width:820px;margin:40px auto 0;padding:0 22px}
.arc-h{display:flex;align-items:center;gap:14px;margin:0 0 4px}
.arc-h h2{font-family:'Anton',sans-serif;font-size:clamp(24px,6vw,40px);letter-spacing:.04em;color:#fff;text-transform:uppercase;margin:0}
.arc-h .ord{font-family:'JetBrains Mono',monospace;font-size:11px;letter-spacing:.3em;color:var(--ember);border:1px solid var(--line);border-radius:20px;padding:4px 11px}
.arc-sub{color:var(--ink-dim);font-family:'JetBrains Mono',monospace;font-size:11px;letter-spacing:.2em;text-transform:uppercase;margin:0 0 16px}

.cards{display:grid;gap:14px}
.card{display:block;text-decoration:none;color:inherit;border:1px solid var(--line);border-radius:9px;overflow:hidden;
  background:linear-gradient(180deg,rgba(244,236,218,.97),rgba(233,221,194,.97));color:var(--ink);
  box-shadow:0 16px 44px rgba(0,0,0,.45);transition:.22s;position:relative}
.card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:5px;background:linear-gradient(180deg,var(--ember),var(--gold))}
.card:hover{transform:translateY(-3px);box-shadow:0 24px 60px rgba(0,0,0,.6),0 0 0 1px var(--ember)}
.card .inner{padding:18px 22px 18px 26px}
.card .eyebrow{font-family:'JetBrains Mono',monospace;font-size:10.5px;letter-spacing:.22em;text-transform:uppercase;color:#9a5a1e}
.card h3{font-family:'Cinzel',serif;font-weight:900;font-size:clamp(20px,4.6vw,28px);margin:4px 0 6px;color:var(--ink);line-height:1.12}
.card p{margin:0;color:#3a322a;font-size:15.5px;line-height:1.6}
.card .meta{display:flex;flex-wrap:wrap;gap:7px;margin-top:12px;align-items:center}
.tag{font-family:'JetBrains Mono',monospace;font-size:10px;letter-spacing:.08em;padding:3px 9px;border-radius:20px;border:1px solid var(--line-ink);color:#6a5c46;background:rgba(23,19,16,.04)}
.tag.proof{color:#fff;background:var(--ember);border-color:var(--ember)}
.badge{margin-left:auto;font-family:'JetBrains Mono',monospace;font-size:10px;letter-spacing:.12em;text-transform:uppercase;
  padding:3px 10px;border-radius:4px;border:1px solid var(--line-ink);color:#6a5c46}
.badge.debrief{color:#7a4a1a;border-color:#caa24a;background:rgba(207,155,58,.14)}
.badge.engine{color:#2a5a8a;border-color:#7fa8d8;background:rgba(60,127,231,.1)}

/* ============================ CHAPTER PAGE ============================ */
.chapter-page{position:relative;z-index:2;max-width:760px;margin:0 auto;padding:8px 22px 60px}
.chapter-hero{padding:22px 0 8px}
.back-link{font-family:'JetBrains Mono',monospace;font-size:11px;letter-spacing:.14em;color:var(--ember-soft);text-decoration:none}
.back-link:hover{color:#fff}
.chapter-hero .eyebrow{font-family:'JetBrains Mono',monospace;font-size:11.5px;letter-spacing:.24em;text-transform:uppercase;color:var(--gold);margin:18px 0 0}
.chapter-hero h1{font-family:'Cinzel',serif;font-weight:900;font-size:clamp(30px,6.5vw,54px);line-height:1.06;margin:8px 0 0;color:#fff;
  text-shadow:0 0 50px rgba(232,84,29,.22)}
.chapter-dek{font-style:italic;color:var(--paper2);font-size:17px;margin:12px 0 0;max-width:60ch}
.tagrow{display:flex;flex-wrap:wrap;gap:7px;margin-top:14px}
.tagrow .tag{color:var(--paper2);border-color:var(--line);background:rgba(255,255,255,.03)}
.tagrow .tag.proof{color:#fff;background:var(--ember);border-color:var(--ember)}

.chapter-nav{display:flex;gap:10px;align-items:center;justify-content:space-between;margin:22px 0;flex-wrap:wrap}
.chapter-nav.bottom{margin-top:34px;border-top:1px solid var(--line);padding-top:22px}
.chapter-nav a{font-family:'JetBrains Mono',monospace;font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--ember-soft);
  text-decoration:none;border:1px solid var(--line);padding:10px 14px;border-radius:3px;transition:.2s;background:rgba(20,16,13,.5);flex:1;text-align:center;min-width:90px}
.chapter-nav a:hover{color:#fff;border-color:var(--ember);box-shadow:0 0 16px rgba(232,84,29,.3)}
.chapter-nav a.disabled{opacity:.3;pointer-events:none}
.chapter-nav a.mid{flex:0 0 auto;color:var(--gold)}

/* OpenAI narration — native audio player, themed container */
.narration{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:16px 0;padding:11px 15px;
  border:1px solid rgba(207,155,58,.35);border-radius:9px;background:rgba(20,16,13,.6)}
.narration-tag{font-family:'JetBrains Mono',monospace;font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--gold);white-space:nowrap}
.narration .tts-audio{flex:1;min-width:230px;height:40px}
@media (max-width:600px){.narration{padding:9px 11px;gap:8px}.narration .tts-audio{min-width:150px}}

/* the parchment reading panel */
.chapter-body{background:linear-gradient(180deg,var(--paper),var(--paper2));color:var(--ink);border-radius:6px;
  padding:clamp(26px,5vw,52px) clamp(22px,5vw,56px);box-shadow:0 30px 80px rgba(0,0,0,.55),inset 0 0 0 2px var(--ink);
  background-image:radial-gradient(rgba(23,19,16,.04) 1px,transparent 1.15px);background-size:7px 7px;background-color:var(--paper);
  font-size:18px;line-height:1.8}
.chapter-body p{margin:0 0 1.15em;max-width:74ch}
.chapter-body p:first-of-type::first-letter{font-family:'Anton',sans-serif;font-size:3.1em;float:left;line-height:.74;margin:6px 12px 0 0;color:var(--ember)}
.chapter-body h2{font-family:'Cinzel',serif;font-weight:900;font-size:clamp(19px,3.6vw,25px);letter-spacing:.02em;color:var(--ink);
  margin:1.9em 0 .5em;text-transform:uppercase;display:flex;align-items:center;gap:12px}
.chapter-body h2::before{content:"";width:22px;height:2px;background:linear-gradient(90deg,var(--ember),transparent);flex:0 0 auto}
.chapter-body h3{font-family:'Cinzel',serif;font-weight:700;font-size:19px;color:#3a2a16;margin:1.5em 0 .4em}
.chapter-body strong{color:#7a3a12;font-weight:700}
.chapter-body em{color:#4a3a26}
.chapter-body ul,.chapter-body ol{margin:0 0 1.15em;padding-left:1.4em;max-width:74ch}
.chapter-body li{margin:0 0 .5em}
.chapter-body li::marker{color:var(--ember)}
.chapter-body blockquote{margin:1.2em 0;padding:10px 20px;border-left:4px solid var(--ember);background:rgba(232,84,29,.06);
  font-style:italic;color:#3a2a16;border-radius:0 6px 6px 0}
.chapter-body code{font-family:'JetBrains Mono',ui-monospace,monospace;font-size:.86em;background:rgba(23,19,16,.07);
  border:1px solid var(--line-ink);border-radius:4px;padding:1px 6px;color:#7a3a12}
/* strata / mountain divider (the chapter's --- breaks) */
.chapter-body hr.strata{border:0;margin:1.8em auto;height:18px;width:100%;
  background:
    radial-gradient(circle at 50% 100%, var(--ink) 0 3px, transparent 4px),
    linear-gradient(90deg,transparent,var(--line-ink) 20%,var(--line-ink) 80%,transparent);
  background-repeat:no-repeat;background-size:100% 2px,100% 2px;background-position:center 8px,center 8px;position:relative}
.chapter-body hr.strata::after{content:"◆";position:absolute;left:50%;top:-2px;transform:translateX(-50%);color:var(--ember);font-size:13px;background:var(--paper);padding:0 10px}

/* special callout (dice-over-plan / theme / the loss) */
.callout{border:1px solid var(--ember);border-left-width:5px;border-radius:8px;background:linear-gradient(180deg,rgba(232,84,29,.1),rgba(232,84,29,.04));
  padding:16px 20px;margin:0 0 22px;color:var(--paper)}
.callout .lbl{font-family:'JetBrains Mono',monospace;font-size:10.5px;letter-spacing:.22em;text-transform:uppercase;color:var(--ember-soft);display:block;margin-bottom:6px}
.callout p{margin:0;font-size:15.5px;color:var(--paper2)}
.callout.proof{border-color:var(--gold);background:linear-gradient(180deg,rgba(207,155,58,.12),rgba(207,155,58,.04))}
.callout.proof .lbl{color:var(--gold)}

/* OOC interjection — dice / damage / HP shown INLINE in the reading flow, but clearly set
   apart as out-of-character (mono, dashed ochre box). The story prose never carries numbers. */
.chapter-body .ooc{font-family:'JetBrains Mono',ui-monospace,monospace;font-size:.8em;line-height:1.55;
  color:#7a521a;background:rgba(207,155,58,.12);border:1px dashed rgba(154,90,30,.55);border-radius:6px;
  padding:9px 14px;margin:1.25em 0;display:block;letter-spacing:.01em;max-width:74ch}
.chapter-body .ooc::before{content:"⊘ ";font-weight:700;color:#9a5a1e}
.chapter-body .ooc strong{color:#5a2a0a}

/* OOC state ledger — the chapter's engine truth, visible (not hidden), out-of-character */
.ooc-ledger{margin-top:28px;border:1px dashed rgba(207,155,58,.5);border-radius:8px;background:rgba(18,14,11,.55);padding:4px 18px 14px}
.ooc-ledger .ooc-tag{font-family:'JetBrains Mono',monospace;font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--gold);padding:13px 0 6px;border-bottom:1px solid var(--line);margin-bottom:8px}
.ooc-ledger .log-line{font-family:'JetBrains Mono',monospace;font-size:12.5px;line-height:1.65;color:var(--paper2);margin:9px 0}
.ooc-ledger .log-line b{color:#fff}
/* debrief (dark body): keep the inline OOC legible */
.is-debrief .chapter-body .ooc{color:var(--ember-soft);background:rgba(232,84,29,.1);border-color:rgba(232,84,29,.45)}
.is-debrief .chapter-body .ooc::before{color:var(--gold)}

.chap-foot{position:relative;z-index:2;text-align:center;padding:34px 22px 50px;color:var(--ink-dim);font-family:'JetBrains Mono',monospace;font-size:11px;letter-spacing:.16em}
.chap-foot a{color:var(--gold);text-decoration:none}

/* debrief variant — reads as an audit document, not a chapter */
.is-debrief .chapter-body{background:linear-gradient(180deg,#161210,#100d0b);color:var(--paper2);box-shadow:0 30px 80px rgba(0,0,0,.55),inset 0 0 0 1px var(--line);
  background-image:none;font-family:'JetBrains Mono',monospace;font-size:15px;line-height:1.7}
.is-debrief .chapter-body p:first-of-type::first-letter{font-family:inherit;font-size:inherit;float:none;margin:0;color:inherit}
.is-debrief .chapter-body h2{color:var(--gold);font-family:'JetBrains Mono',monospace;font-size:14px;letter-spacing:.12em}
.is-debrief .chapter-body h2::before{background:linear-gradient(90deg,var(--gold),transparent)}
.is-debrief .chapter-body strong{color:var(--ember-soft)}
.is-debrief .chapter-body em{color:var(--paper)}
.is-debrief .chapter-body hr.strata::after{background:#161210;color:var(--gold)}
.is-debrief .chapter-body blockquote{color:var(--paper);background:rgba(232,84,29,.08);border-left-color:var(--ember)}
.is-debrief .chapter-body code{background:rgba(207,155,58,.12);border-color:var(--line);color:var(--ember-soft)}
.is-debrief .chapter-body li::marker{color:var(--gold)}

.reveal{opacity:0;transform:translateY(22px);transition:.8s cubic-bezier(.2,.7,.2,1)}.reveal.in{opacity:1;transform:none}

@media (max-width:600px){
  .chapter-body{font-size:16.5px;line-height:1.78}
  .idx-hero{padding-top:30px}
  .chapter-nav a{font-size:10px;padding:9px 8px}
  .topbar{flex-direction:column;align-items:flex-start;gap:10px}
}