/* =========================================================================
   V10a · EINK  ·  e-paper portrait
   Warm grey-white background, deep warm-black ink (e-paper isn't pure black),
   pure-static interaction, paginated book feel, refresh flash on page change.
   The only "accent" colour is darker ink. No chromatic accents at all - that
   is the medium constraint.
   ========================================================================= */

:root {
  --paper:        #E8E4DC;
  --paper-warm:   #DEDAD0;
  --paper-card:   #DDD8CD;
  --ink:          #1A1814;   /* deep warm black; not pure */
  --ink-soft:     #3A352D;
  --ink-mid:      #5A554D;
  --ink-muted:    #8A8478;
  --ink-faint:    #B5AE9F;
  --rule:         #BFB8A8;
  --rule-soft:    rgba(26, 24, 20, 0.18);

  --serif: 'Source Serif 4', Charter, Georgia, 'Times New Roman', serif;
  --sans:  'Inter', system-ui, sans-serif;
  --mono:  'IBM Plex Mono', SFMono-Regular, Menlo, Consolas, monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { margin: 0; padding: 0; }

body.eink {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.65;
  font-variant-numeric: oldstyle-nums;
  -webkit-font-smoothing: antialiased;
  /* IMPORTANT: no smooth motion, this is e-paper */
  min-height: 100vh;
  padding-top: 32px;
  padding-bottom: 48px;
  /* very faint paper grain - e-paper is not perfectly even */
  background-image:
    radial-gradient(rgba(26, 24, 20, 0.025) 0.5px, transparent 0.5px);
  background-size: 3px 3px;
}

p, h1, h2, h3, h4, dl, dt, dd, ol, ul, li, hr, figure { margin: 0; padding: 0; }
ol, ul { list-style: none; }
em { font-style: italic; }
strong { font-weight: 600; color: var(--ink); }
sup { font-size: 0.7em; vertical-align: super; line-height: 0; }
a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1.5px solid var(--ink);
  padding-bottom: 0;
  /* e-paper has no hover transition */
}
a:hover { background: var(--ink); color: var(--paper); }
::selection { background: var(--ink); color: var(--paper); }

/* ban all transitions on e-paper EXCEPT for the page-turn flash */
button, a, span, div, .work, .essays li {
  transition: none !important;
}

/* =========================================================================
   PAGE-TURN FLASH OVERLAY
   Brief full-screen invert when content changes - the only motion on e-paper.
   ========================================================================= */

.flash {
  position: fixed; inset: 0;
  background: var(--ink);
  pointer-events: none;
  opacity: 0;
  z-index: 100;
}
.flash.is-flashing {
  animation: refresh 320ms steps(4, end);
}
@keyframes refresh {
  0%   { opacity: 0; }
  30%  { opacity: 1; }
  100% { opacity: 0; }
}

/* =========================================================================
   STATUS BARS — top & bottom (Kindle / Boox device chrome)
   ========================================================================= */

.status {
  position: fixed;
  left: 0; right: 0;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 18px;
  padding: 6px 16px;
  background: var(--paper);
  color: var(--ink-mid);
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  z-index: 50;
}
.status--top    { top: 0; border-bottom: 1px solid var(--rule); height: 28px; }
.status--bottom { bottom: 0; border-top: 1px solid var(--rule); height: 32px; }

.aa {
  appearance: none;
  background: transparent;
  border: 1px solid var(--ink);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 14px;
  width: 26px; height: 18px;
  display: inline-flex; align-items: center; justify-content: center;
  cursor: pointer;
  line-height: 1;
  padding: 0;
}
.aa:active { background: var(--ink); color: var(--paper); }

.status__chapter {
  text-align: center;
  font-family: var(--serif);
  text-transform: none;
  letter-spacing: 0;
  font-size: 13px;
  color: var(--ink-soft);
  font-style: italic;
}

.status__icons { display: flex; align-items: center; gap: 14px; color: var(--ink-soft); }
.ico { display: inline-flex; align-items: center; gap: 4px; }
.ico__t { font-family: var(--mono); font-size: 10.5px; color: var(--ink-soft); }
.bat-fill { width: 13px; /* JS will adjust */ }

.status__c { text-align: center; }
.status__r { justify-self: end; }
.dim { color: var(--ink-faint); }

/* =========================================================================
   READING PROGRESS RAIL (a thin under-bar)
   ========================================================================= */

.rail {
  position: fixed;
  top: 28px; left: 0; right: 0;
  height: 2px;
  background: transparent;
  z-index: 49;
}
.rail__fill {
  height: 2px;
  background: var(--ink);
  width: 0%;
}

/* =========================================================================
   BOOK BODY
   ========================================================================= */

.book {
  max-width: 620px;
  margin: 0 auto;
  padding: 64px 28px 80px;
  position: relative;
  z-index: 2;
}

/* =========================================================================
   COVER PAGE
   ========================================================================= */

.cover {
  min-height: calc(100vh - 220px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 0 80px;
}
.cover__plate {
  border: 1.5px solid var(--ink);
  padding: 56px 40px 40px;
  width: 100%;
  background: var(--paper);
  text-align: left;
}
.cover__edn {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.10em;
  color: var(--ink-soft);
  text-transform: uppercase;
  margin-bottom: 32px;
}
.cover__title {
  font-family: var(--serif);
  font-weight: 600;
  font-variation-settings: "opsz" 60;
  font-size: clamp(48px, 9vw, 84px);
  line-height: 0.96;
  letter-spacing: -0.018em;
  margin-bottom: 24px;
}
.cover__title em { font-style: italic; font-weight: 400; }
.cover__sub {
  font-family: var(--serif);
  font-style: italic;
  font-size: 19px;
  line-height: 1.4;
  color: var(--ink-soft);
  margin-bottom: 36px;
  max-width: 38ch;
}
.cover__rule {
  border: 0;
  border-top: 1px solid var(--ink);
  margin: 0 0 28px;
}
.cover__meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px 32px;
  margin-bottom: 36px;
}
.cover__meta > div { display: flex; flex-direction: column; gap: 2px; }
.cover__meta dt {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.10em;
  color: var(--ink-muted);
  text-transform: uppercase;
}
.cover__meta dd {
  font-family: var(--serif);
  font-size: 15px;
  color: var(--ink);
}
.cover__foot {
  font-family: var(--serif);
  font-style: italic;
  font-size: 14px;
  color: var(--ink-muted);
  text-align: right;
}

@media (max-width: 540px) { .cover__plate { padding: 36px 22px 28px; } .cover__meta { grid-template-columns: 1fr; } }

/* =========================================================================
   CHAPTERS
   ========================================================================= */

.ch { padding: 80px 0 64px; }
.ch--col { padding-bottom: 32px; }

.ch__no {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--ink-muted);
  text-transform: uppercase;
  margin-bottom: 10px;
}
.ch__title {
  font-family: var(--serif);
  font-weight: 500;
  font-variation-settings: "opsz" 36;
  font-size: clamp(36px, 6vw, 52px);
  line-height: 1;
  letter-spacing: -0.018em;
  color: var(--ink);
  margin-bottom: 6px;
}
.ch__loc {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: var(--ink-muted);
  text-transform: uppercase;
  margin-bottom: 32px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--rule);
}

.ch p {
  margin-bottom: 16px;
  color: var(--ink);
  text-align: justify;
  hyphens: auto;
}
.lead { font-size: 19px; line-height: 1.55; color: var(--ink); }
.lead::first-letter {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 4em;
  float: left;
  line-height: 0.85;
  padding: 6px 10px 0 0;
  color: var(--ink);
}

@media (max-width: 540px) {
  .ch p { text-align: left; hyphens: none; }
  .lead::first-letter { font-size: 3em; padding: 4px 8px 0 0; }
}

.fn {
  font-family: var(--mono);
  font-size: 0.65em;
  vertical-align: super;
  color: var(--ink-soft);
  padding: 0 1px;
  border-bottom: 1px solid var(--ink);
}

.foot {
  margin-top: 36px;
  padding-top: 14px;
  border-top: 1px solid var(--rule);
}
.foot p {
  font-size: 13px;
  line-height: 1.5;
  color: var(--ink-soft);
  text-align: left;
  hyphens: none;
}
.foot sup { font-family: var(--mono); color: var(--ink); }

/* =========================================================================
   WORKS — book entries
   ========================================================================= */

.work {
  margin: 32px 0 36px;
  padding-bottom: 28px;
  border-bottom: 1px dotted var(--rule);
}
.work:last-child { border-bottom: 0; padding-bottom: 0; }

.work__t {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 22px;
  line-height: 1.2;
  letter-spacing: -0.005em;
  color: var(--ink);
  margin-bottom: 4px;
}
.work__v {
  font-family: var(--mono);
  font-weight: 400;
  font-size: 12px;
  color: var(--ink-muted);
  margin-left: 6px;
}
.work__y {
  font-family: var(--serif);
  font-style: italic;
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 14px !important;
}

.work__m {
  margin-top: 14px;
  display: grid;
  gap: 6px;
  padding: 12px 14px;
  background: var(--paper-warm);
  border: 1px solid var(--rule);
}
.work__m > div {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 10px;
  font-family: var(--serif);
  font-size: 13.5px;
  line-height: 1.4;
}
.work__m dt {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--ink-muted);
  text-transform: uppercase;
  padding-top: 3px;
}
.work__m dd { color: var(--ink); }

.work--minor { opacity: 0.85; }
.work--minor .work__t { font-style: italic; font-size: 18px; }

/* =========================================================================
   ESSAYS — book listing
   ========================================================================= */

.essays { display: grid; gap: 0; }
.essays li {
  display: grid;
  grid-template-columns: 120px 1fr auto;
  gap: 16px;
  align-items: baseline;
  padding: 12px 0;
  border-bottom: 1px dotted var(--rule);
}
.essays__d {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  color: var(--ink-muted);
  text-transform: uppercase;
}
.essays a {
  font-family: var(--serif);
  font-size: 16px;
  font-style: italic;
  color: var(--ink);
  border-bottom-color: var(--rule);
}
.essays__pp {
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--ink-muted);
}

@media (max-width: 540px) {
  .essays li { grid-template-columns: 1fr; gap: 2px; }
}

/* =========================================================================
   REACH
   ========================================================================= */

.reach {
  margin-top: 24px;
  display: grid;
  gap: 10px;
}
.reach > div {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 14px;
  padding: 10px 0;
  border-bottom: 1px dotted var(--rule);
}
.reach dt {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: var(--ink-muted);
  text-transform: uppercase;
  padding-top: 4px;
}
.reach dd {
  font-family: var(--serif);
  font-size: 16px;
  color: var(--ink);
}

.end {
  margin-top: 48px !important;
  padding-top: 18px;
  border-top: 1px solid var(--ink);
  font-family: var(--serif);
  font-size: 14px;
  color: var(--ink-soft);
  text-align: center !important;
  hyphens: none;
}

.copy {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  color: var(--ink-muted);
  text-transform: uppercase;
  line-height: 1.6;
  margin-top: 32px !important;
  text-align: left;
}

/* =========================================================================
   FLOATING JUMP PAD (chapter selector)
   ========================================================================= */

.jump {
  position: fixed;
  right: 16px;
  bottom: 52px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 8px 8px;
  background: var(--paper);
  border: 1.5px solid var(--ink);
  z-index: 49;
}
.jump a {
  display: inline-block;
  min-width: 30px;
  padding: 4px 6px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink);
  text-align: center;
  border-bottom: 0;
}
.jump a:hover { background: var(--ink); color: var(--paper); }

@media (max-width: 540px) {
  .jump { right: 8px; bottom: 44px; padding: 4px 5px; }
  .jump a { min-width: 24px; padding: 2px 4px; font-size: 10px; }
}

/* =========================================================================
   DOT PROGRESS (bottom status)
   ========================================================================= */

.dots { display: flex; gap: 4px; align-items: center; }
.dot {
  width: 5px; height: 5px;
  border: 1px solid var(--ink-soft);
  background: transparent;
  border-radius: 50%;
}
.dot--on { background: var(--ink-soft); }

@media (max-width: 540px) {
  .status { font-size: 9.5px; padding: 6px 10px; gap: 10px; }
  .status__c { display: none; }
}