/* ============================================================
   ARCHIVE · The Architecture of Forgetting
   editorial print / kinetic typography — Fable 15, folio 11
   paper: #f3ecdf · ink: #221e1a · burgundy: #6f2432
   ============================================================ */

:root {
  --paper:      #f3ecdf;
  --paper-deep: #ece2cf;
  --ink:        #221e1a;
  --ink-soft:   #554c44;
  --ink-faint:  rgba(34, 30, 26, 0.14);
  --accent:     #6f2432;
  --accent-soft:rgba(111, 36, 50, 0.55);
  --serif: "Newsreader", "Iowan Old Style", Georgia, serif;
  --mono:  "IBM Plex Mono", "SFMono-Regular", Menlo, monospace;
  --measure: 33rem;
  --chrome-h: 2.6rem;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html {
  background: var(--paper);
  scrollbar-color: var(--accent-soft) var(--paper);
  scrollbar-width: thin;
}

body {
  font-family: var(--serif);
  font-optical-sizing: auto;
  font-size: clamp(1.09rem, 1rem + 0.35vw, 1.22rem);
  line-height: 1.7;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-variant-numeric: oldstyle-nums;
  overflow-x: hidden;
}

.chapter-head h2, .deck { text-wrap: balance; }
.para p { text-wrap: pretty; }

::selection { background: var(--accent); color: var(--paper); }

::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--paper); }
::-webkit-scrollbar-thumb {
  background: var(--accent-soft);
  border: 3px solid var(--paper);
  border-radius: 6px;
}

a { color: var(--accent); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* ---------- fixed chrome ---------- */

.grain {
  position: fixed; inset: -20%;
  z-index: 60;
  pointer-events: none;
  mix-blend-mode: multiply;
  opacity: 0.55;
  /* background-image set by JS (canvas noise tile) */
}

.vignette {
  position: fixed; inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(120% 90% at 50% 0%,   transparent 60%, rgba(90, 70, 40, 0.07) 100%),
    radial-gradient(130% 100% at 50% 100%, transparent 55%, rgba(60, 40, 25, 0.08) 100%);
}

.progress {
  position: fixed; top: 0; left: 0; right: 0;
  height: 2px;
  z-index: 90;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: 0 50%;
}

.running {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 80;
  height: var(--chrome-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0 1.25rem;
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  border-bottom: 1px solid var(--ink-faint);
  opacity: 0;
  transform: translateY(-100%);
  transition: opacity 0.5s ease, transform 0.55s cubic-bezier(0.22, 1, 0.36, 1);
}
.running.is-on { opacity: 1; transform: translateY(0); }
.run-mid  { overflow: hidden; text-align: center; flex: 1; white-space: nowrap; text-overflow: ellipsis; }
.run-title, .run-folio { display: inline-block; }
.run-right { color: var(--accent); }

.back {
  position: fixed; left: 1.1rem; bottom: 1.1rem;
  z-index: 85;
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink-soft);
  background: var(--paper);
  border: 1px solid var(--ink-faint);
  padding: 0.5rem 0.85rem;
  transition: color 0.35s ease, background 0.35s ease, border-color 0.35s ease;
}
.back:hover {
  color: var(--paper);
  background: var(--accent);
  border-color: var(--accent);
}

/* ---------- shared leaf layout ---------- */

main { position: relative; z-index: 2; }

.leaf {
  width: min(var(--measure), calc(100vw - 2.75rem));
  margin-inline: auto;
  position: relative;
}

/* ---------- masthead ---------- */

.masthead {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
  padding: calc(var(--chrome-h) + 3rem) 0 4rem;
}

.overline {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 2.4rem;
}

.rule {
  height: 1px;
  background: var(--ink);
  transform-origin: 50% 50%;
}
.rule-top    { margin-bottom: 2.2rem; }
.rule-bottom { margin-top: 2.2rem; }

.title {
  font-weight: 420;
  font-size: clamp(2.15rem, 8.4vw, 6.1rem);
  line-height: 1.04;
  letter-spacing: -0.015em;
  font-variation-settings: "opsz" 72;
}
.mask { display: block; overflow: hidden; padding-block: 0.04em; }
.line { display: block; white-space: nowrap; }

.deck {
  font-style: italic;
  font-size: clamp(1.12rem, 1rem + 0.7vw, 1.42rem);
  line-height: 1.55;
  color: var(--ink-soft);
  max-width: 30rem;
  margin: 2.4rem auto 0;
}

.byline {
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-top: 2rem;
}

.scroll-cue {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-top: 4rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.7rem;
}
.cue-line {
  display: block;
  width: 1px; height: 3.4rem;
  background: linear-gradient(var(--accent), transparent);
}

/* ---------- asterism / ornaments ---------- */

.asterism {
  text-align: center;
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.4rem;
  color: var(--accent);
  letter-spacing: 0.4em;
  padding: 1rem 0 0;
}

/* ---------- chapters ---------- */

.chapter { padding: clamp(4.5rem, 10vh, 8rem) 0; }

/* faint numeral watermark in the left margin, wide viewports only */
@media (min-width: 1180px) {
  .chapter::before {
    content: attr(data-num);
    position: absolute;
    left: -11rem;
    top: clamp(4rem, 9vh, 7rem);
    width: 8rem;
    text-align: right;
    font-family: var(--serif);
    font-style: italic;
    font-weight: 300;
    font-size: 9rem;
    line-height: 1;
    color: var(--ink);
    opacity: 0.055;
    pointer-events: none;
    user-select: none;
  }
}

.chapter-head { margin-bottom: 3rem; }

.kicker {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.3em;
  color: var(--accent);
  margin-bottom: 0.9rem;
}

.chapter-head h2 {
  font-weight: 480;
  font-size: clamp(1.7rem, 1.3rem + 2vw, 2.6rem);
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.head-rule {
  width: 3.2rem; height: 1px;
  background: var(--accent);
  margin-top: 1.3rem;
  transform-origin: 0 50%;
}

.para { position: relative; }
.para + .para { margin-top: 1.6em; }

.para p { hanging-punctuation: first; }

.has-dropcap::first-letter {
  float: left;
  font-size: 4.55em;
  line-height: 0.8;
  padding: 0.06em 0.12em 0 0;
  font-weight: 500;
  color: var(--accent);
  font-variation-settings: "opsz" 72;
}

em { font-style: italic; }

/* footnote apparatus */

.fnref {
  font-family: var(--mono);
  font-size: 0.62em;
  font-weight: 600;
  color: var(--accent);
  cursor: help;
  padding: 0 0.15em;
  line-height: 0;
  transition: background 0.3s ease, color 0.3s ease;
}
.fnref.lit, .fnref:hover { background: var(--accent); color: var(--paper); }

.note {
  font-family: var(--mono);
  font-size: 0.68rem;
  line-height: 1.65;
  letter-spacing: 0.01em;
  color: var(--ink-soft);
  border-left: 1px solid var(--ink-faint);
  padding-left: 0.9rem;
  transition: border-color 0.35s ease, color 0.35s ease;
}
.note.lit { border-color: var(--accent); color: var(--ink); }
.note-no { color: var(--accent); font-weight: 600; margin-right: 0.35em; }

/* margin notes on wide viewports */
@media (min-width: 1180px) {
  .note {
    position: absolute;
    left: calc(100% + 3rem);
    top: 0.35em;
    width: 13.5rem;
  }
}
@media (max-width: 1179.98px) {
  .note {
    display: block;
    margin: 1.1rem 0 0 1.4rem;
    max-width: 24rem;
  }
}

/* ---------- pull-quotes ---------- */

.pullquote {
  padding: clamp(4rem, 12vh, 8.5rem) 0;
  width: min(52rem, calc(100vw - 2.75rem));
  text-align: center;
}

.pq-rule {
  height: 1px;
  background: var(--ink-faint);
  transform-origin: 50% 50%;
}

.pq-mark {
  display: block;
  font-family: var(--serif);
  font-style: italic;
  font-weight: 300;
  font-size: clamp(3.4rem, 2rem + 6vw, 6.5rem);
  line-height: 0.3;
  color: var(--accent);
  padding-top: 3.2rem;
  user-select: none;
}

.pq-text {
  font-style: italic;
  font-weight: 460;
  font-size: clamp(1.9rem, 1rem + 4.6vw, 4.1rem);
  line-height: 1.14;
  letter-spacing: -0.01em;
  font-variation-settings: "opsz" 72;
  padding: 1.6rem 0 2.2rem;
}

/* split words (set by JS) */
.pq-text .w {
  display: inline-block;
  white-space: pre;
}

.pq-cap {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-soft);
  padding-bottom: 2.6rem;
}

/* ---------- interlude · fig. 1 ---------- */

.interlude {
  width: 100%;
  max-width: none;
}

.interlude-stage {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  text-align: center;
  overflow: hidden;
  padding: var(--chrome-h) 1rem 0;
}

.fig-label {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accent);
}

.decay {
  --wght: 720;
  font-family: var(--serif);
  font-variation-settings: "wght" var(--wght), "opsz" 72;
  font-size: clamp(2.4rem, 9vw, 6.4rem);
  transform-origin: 50% 50%;
  line-height: 1;
  letter-spacing: 0.02em;
  white-space: nowrap;
  color: var(--ink);
}
.decay .L { display: inline-block; will-change: transform, opacity; }

.fig-caption {
  font-style: italic;
  font-size: clamp(0.95rem, 0.85rem + 0.5vw, 1.15rem);
  color: var(--ink-soft);
}

.fig-readout {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  color: var(--accent);
  border: 1px solid var(--ink-faint);
  padding: 0.45rem 0.8rem;
}

/* ---------- end mark & colophon ---------- */

.endmark-wrap {
  display: flex;
  justify-content: center;
  padding-top: 4rem;
}
.endmark {
  width: 0.72rem; height: 0.72rem;
  background: var(--accent);
  transform: rotate(45deg);
  display: block;
}

.colophon {
  text-align: center;
  padding: 3rem 0 9rem;
}
.rule-colophon {
  width: 6rem;
  margin: 0 auto 2.6rem;
  background: var(--ink-faint);
}
.colophon-text {
  font-family: var(--mono);
  font-size: 0.7rem;
  line-height: 1.9;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
  max-width: 26rem;
  margin: 0 auto;
}
.ink-chip {
  display: inline-block;
  width: 0.62em; height: 0.62em;
  background: var(--ink);
  margin-right: 0.35em;
  vertical-align: baseline;
}
.colophon-sig {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-top: 1.6rem;
}

/* ---------- initial hidden states (JS present only) ---------- */

.js .masthead .line   { transform: translateY(115%); }
.js .masthead .rule   { transform: scaleX(0); }
.js .masthead .m-fade { opacity: 0; transform: translateY(14px); }

/* everything else is hidden at runtime by GSAP, so a CDN failure
   or reduced-motion never leaves blank content */

/* ---------- reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  .js .masthead .line,
  .js .masthead .rule,
  .js .masthead .m-fade {
    transform: none;
    opacity: 1;
  }
  .cue-line { background: var(--ink-faint); }
  .running { transition: none; }
}

/* ---------- print: an archive should archive well ---------- */

@media print {
  .grain, .vignette, .progress, .running, .back,
  .scroll-cue, .fig-readout { display: none !important; }
  body { background: #fff; color: #000; }
  .js .masthead .line, .js .masthead .rule, .js .masthead .m-fade {
    transform: none; opacity: 1;
  }
  .masthead, .interlude-stage { min-height: 0; }
  .note { position: static; margin: 1rem 0 0 1.4rem; width: auto; }
  /* GSAP hides unrevealed content via inline styles; !important wins on paper */
  .rv, .w, .pq-mark, .pq-cap, .pq-rule, .head-rule, .rule-colophon,
  .fig-caption, .fig-label, .decay .L {
    opacity: 1 !important;
    transform: none !important;
    clip-path: none !important;
  }
}

/* ---------- responsive ---------- */

@media (max-width: 640px) {
  :root { --chrome-h: 2.2rem; }
  .running { padding: 0 0.9rem; font-size: 0.56rem; }
  .run-mid { display: none; }
  .masthead { padding-bottom: 2.5rem; }
  .deck { max-width: 26rem; }
  .scroll-cue { margin-top: 2.6rem; }
  .chapter { padding: 3.6rem 0; }
  .pullquote { padding: 3.4rem 0; }
  .pq-text { padding: 2.2rem 0 1.7rem; }
  .colophon { padding-bottom: 7rem; }
  .back { left: 0.8rem; bottom: 0.8rem; }
}