/* ============================================
   VANESA VEGA — COLECCIÓN VIDA ADULTA
   Sistema visual blanco y negro · v2
   ============================================ */

:root {
  --ink:        #111111;
  --ink-soft:   #444444;
  --ink-muted:  #888888;
  --ink-faint:  #bbbbbb;
  --paper:      #faf9f7;
  --paper-warm: #f4f2ee;
  --paper-dark: #ece9e3;
  --paper-rule: #dddad4;
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans:  'DM Sans', system-ui, sans-serif;
  --font-hand:  'Caveat', cursive;
  --page-w:     560px;
  --page-h:     780px;
  --page-r:     4px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; }

body {
  background: #e0ddd7;
  font-family: var(--font-sans);
  color: var(--ink);
  min-height: 100vh;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 76px 16px 60px;
  overflow-x: hidden;
}

/* ── NAV ── */
.page-nav {
  position: fixed; top: 0; left: 0; right: 0;
  background: var(--ink);
  display: flex; justify-content: center; gap: 0;
  z-index: 100;
}
.nav-btn {
  background: transparent; border: none;
  color: rgba(255,255,255,0.45);
  font-family: var(--font-sans); font-size: 10.5px;
  font-weight: 500; letter-spacing: 0.1em; text-transform: uppercase;
  padding: 13px 16px; cursor: pointer;
  transition: color 0.2s, background 0.2s;
  border-right: 1px solid rgba(255,255,255,0.06);
}
.nav-btn:last-child { border-right: none; }
.nav-btn:hover { color: #fff; }
.nav-btn.active { color: #fff; background: rgba(255,255,255,0.09); }
.nav-home-link {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
}


/* ── FLIP BUTTONS ── */
.flip-btn {
  position: fixed; top: 50%; transform: translateY(-50%);
  background: var(--ink); color: var(--paper);
  border: none; width: 40px; height: 40px; border-radius: 50%;
  font-size: 17px; cursor: pointer; z-index: 100;
  display: flex; align-items: center; justify-content: center;
  opacity: 0.6; transition: opacity 0.2s;
}
.flip-btn:hover { opacity: 1; }
.flip-prev { left: 10px; }
.flip-next { right: 10px; }

/* ── PAGES ── */
.page {
  display: none; width: 100%; max-width: var(--page-w);
  min-height: var(--page-h);
  box-shadow: 0 12px 48px rgba(0,0,0,0.2), 0 2px 8px rgba(0,0,0,0.1);
  border-radius: var(--page-r); overflow: hidden;
}
.page.active { display: block; }

/* ═══════════════════════════════════════
   PORTADA
═══════════════════════════════════════ */
.book-cover {
  background: var(--paper);
  width: 100%; min-height: var(--page-h);
  display: flex; flex-direction: column; align-items: center;
}
.cover-top-band {
  width: 100%; border-bottom: 1.5px solid var(--ink);
  padding: 13px 32px; display: flex; justify-content: center;
}
.collection-label {
  font-family: var(--font-sans); font-size: 10.5px;
  font-weight: 500; letter-spacing: 0.15em; text-transform: uppercase;
  color: var(--ink-soft);
}
.collection-label em { font-style: italic; }

.cover-title-block { padding: 22px 32px 0; text-align: center; }
.cover-title-main {
  font-family: var(--font-serif);
  font-size: clamp(34px, 7.5vw, 50px);
  font-weight: 400; font-style: italic; color: var(--ink);
  line-height: 1.05; letter-spacing: -0.01em;
}
.cover-title-accent {
  font-family: var(--font-serif);
  font-size: clamp(44px, 9.5vw, 66px);
  font-weight: 900; color: var(--ink);
  line-height: 1.0; letter-spacing: -0.03em; text-transform: uppercase;
}

/* Subtítulo portada */
.cover-subtitle-row {
  display: flex; align-items: center; gap: 10px;
  margin-top: 10px; padding: 0 8px;
}
.cover-rule-thin {
  flex: 1; height: 1px; background: var(--ink-faint); display: block;
}
.cover-subtitle {
  font-family: var(--font-sans); font-size: 10px;
  font-weight: 400; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--ink-muted);
  white-space: normal; text-align: center;
  line-height: 1.35; max-width: min(380px, 72vw);
  flex-shrink: 1; min-width: 0;
}

.cover-illustration {
  flex: 1; width: 100%;
  display: flex; align-items: center; justify-content: center;
  padding: 4px 16px;
}
.cover-svg { width: 100%; max-width: 460px; height: auto; }

.cover-illustration-real {
  padding: 10px 8px 14px;
  min-height: 460px;
  gap: 0;
  align-items: stretch;
}

/* Columnas de doodles laterales */
.cover-doodle {
  flex-shrink: 0;
  width: 72px;
  display: flex;
  align-items: center;
}
.cover-doodle svg {
  width: 100%; height: auto; display: block;
}
.cover-doodle-left { padding-right: 6px; }
.cover-doodle-right { padding-left: 6px; }

.cover-real-art {
  display: block;
  flex: 1;
  width: 0;
  max-height: 450px;
  object-fit: contain;
  filter: grayscale(1) contrast(1.08);
  mix-blend-mode: multiply;
}

.legacy-cover-svg {
  display: none;
}

.cover-author-block {
  width: 100%; border-top: 1.5px solid var(--ink);
  padding: 12px 32px; text-align: center;
}
.cover-author {
  font-family: var(--font-sans); font-size: 13.5px;
  font-weight: 500; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--ink);
}
.cover-bottom-band {
  width: 100%; background: var(--ink); padding: 13px 32px; text-align: center;
}
.cover-tagline {
  font-family: var(--font-hand); font-size: 15px;
  color: var(--paper); line-height: 1.5;
}

/* ═══════════════════════════════════════
   PÁGINAS INTERIORES — BASE
═══════════════════════════════════════ */
.interior-page {
  background: var(--paper);
  width: 100%; min-height: var(--page-h);
  padding: 0 50px 44px;
  display: flex; flex-direction: column;
  position: relative;
}

/* ── Running header ── */
.running-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 0 10px;
  border-bottom: 0.75px solid var(--paper-rule);
  margin-bottom: 20px;
}
.running-left, .running-right {
  font-family: var(--font-sans); font-size: 9px;
  font-weight: 400; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--ink-muted);
}
.running-center {
  font-size: 8px; color: var(--ink-faint);
}

/* ── Abridor de capítulo ── */
.chapter-opener { margin-bottom: 22px; }
.chapter-opener-small { margin-bottom: 14px; }

.chapter-marker {
  font-family: var(--font-sans); font-size: 9.5px;
  font-weight: 500; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--ink-muted); margin-bottom: 8px;
}
.chapter-title {
  font-family: var(--font-serif);
  font-size: clamp(22px, 4.8vw, 32px);
  font-weight: 700; line-height: 1.12; color: var(--ink);
  margin-bottom: 14px;
}
.chapter-title-italic { font-style: italic; font-weight: 400; }
.chapter-title-md { font-size: clamp(20px, 4.2vw, 27px); }

/* Filete ornamental de capítulo */
.chapter-rule {
  display: flex; align-items: center; gap: 8px;
  margin-bottom: 0;
}
.chapter-rule span:first-child,
.chapter-rule span:last-child {
  flex: 1; height: 1.5px; background: var(--ink);
}
.chapter-rule-dot {
  font-size: 9px; color: var(--ink-muted); flex: 0; white-space: nowrap;
}

/* ── Cuerpo de texto ── */
.interior-body {
  font-family: var(--font-sans); font-size: 14.5px;
  line-height: 1.82; color: var(--ink-soft); flex: 1;
}
.interior-body p {
  margin-bottom: 14px;
  text-align: justify;
  hyphens: auto;
  -webkit-hyphens: auto;
}
.interior-body em { font-style: italic; color: var(--ink); }
.interior-body-compact { font-size: 13.5px; line-height: 1.78; }

/* Capitular */
.dropcap-p { margin-top: 16px; }
.dropcap {
  float: left; font-family: var(--font-serif);
  font-size: 62px; font-weight: 900; line-height: 0.82;
  margin: 8px 6px -4px -2px; color: var(--ink);
  text-transform: uppercase;
}
.dropcap-sm { font-size: 52px; line-height: 0.82; margin: 6px 5px -3px -2px; }

/* Firma autora */
.signature-line {
  font-family: var(--font-hand); font-size: 26px;
  color: var(--ink); margin-top: 6px !important;
}

/* Sticky note flotante */
.sticky-note {
  border: 1.5px solid var(--ink);
  border-radius: 2px 16px 16px 16px;
  padding: 9px 14px; background: var(--paper-dark);
  max-width: 185px; margin-bottom: 12px;
  position: relative;
}
.sticky-note-right { float: right; margin-left: 16px; clear: right; }
.sticky-text {
  font-family: var(--font-hand); font-size: 14px;
  color: var(--ink); line-height: 1.4;
}
/* pequeño doblez de esquina en sticky note */
.sticky-note::before {
  content: ''; position: absolute; top: -1px; left: -1px;
  width: 0; height: 0;
  border-style: solid;
  border-width: 10px 10px 0 0;
  border-color: var(--paper-dark) transparent transparent transparent;
  filter: drop-shadow(1px 0 0 var(--ink));
}

/* Pull quote / cita destaca */
.pull-quote {
  font-family: var(--font-serif); font-size: 15.5px;
  font-style: italic; font-weight: 700; color: var(--ink);
  border-top: 2px solid var(--ink); border-bottom: 2px solid var(--ink);
  padding: 12px 8px; margin: 18px 0; line-height: 1.5;
  text-align: center;
}

/* Separador ornamental tipo tipográfico */
.ornamental-sep {
  font-family: var(--font-sans); font-size: 11px;
  color: var(--ink-faint); text-align: center;
  letter-spacing: 0.4em; margin: 16px 0 12px;
}

/* Nota inline (garabato) */
.inline-note {
  display: flex; align-items: flex-start; gap: 6px;
  margin: 8px 0 14px;
  padding: 8px 12px;
  border-left: 2px solid var(--paper-dark);
}
.inline-note-arrow { font-size: 18px; color: var(--ink-muted); line-height: 1; }
.inline-note-text { font-size: 13px; color: var(--ink-muted); line-height: 1.5; }

/* Ilustración lateral pequeña */
.interior-doodle {
  position: absolute; right: 16px; bottom: 60px;
  width: 140px; text-align: center;
}
.doodle-caption {
  font-size: 12px; color: var(--ink-muted); margin-top: 5px;
  display: block;
}

/* Ilustración ancho completo */
.full-width-illo {
  width: calc(100% + 0px);
  border-top: 1px solid var(--paper-rule);
  border-bottom: 1px solid var(--paper-rule);
  padding: 10px 0 6px; margin: 0 0 14px;
}
.full-width-illo svg { width: 100%; height: auto; display: block; }
.full-width-illo .chapter-art {
  display: block;
  width: 100%;
  height: clamp(128px, 34vw, 176px);
  object-fit: contain;
  filter: grayscale(1) contrast(1.04);
  mix-blend-mode: multiply;
}

/* Número de página inferior (estilo running foot) */
.page-number-bottom {
  display: flex; align-items: center; gap: 8px;
  justify-content: center;
  font-family: var(--font-sans); font-size: 9.5px;
  font-weight: 400; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-muted);
  margin-top: auto; padding-top: 20px;
  border-top: 0.75px solid var(--paper-rule);
}
.pnb-sep { color: var(--ink-faint); }
.pnb-title { font-style: italic; letter-spacing: 0.06em; text-transform: none; }

/* ═══════════════════════════════════════
   PÁGINA ESPECIAL — TEST
═══════════════════════════════════════ */
.interior-page-special { padding: 0 46px 40px; }

.test-header { margin-bottom: 18px; }
.test-header-label {
  font-family: var(--font-sans); font-size: 9.5px;
  font-weight: 500; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--ink-muted); margin-bottom: 7px;
}
.special-title {
  font-family: var(--font-serif); font-size: 26px;
  font-weight: 700; color: var(--ink); margin-bottom: 5px;
}
.special-subtitle {
  font-family: var(--font-sans); font-size: 13.5px;
  font-weight: 400; color: var(--ink-soft); margin-bottom: 3px;
}
.special-instruction {
  font-size: 13px; color: var(--ink-muted); line-height: 1.4;
  display: block; margin-bottom: 14px;
  border-bottom: 1.5px solid var(--ink); padding-bottom: 14px;
}

.test-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 8px 18px; margin-bottom: 18px;
}
.test-item {
  display: flex; align-items: flex-start; gap: 9px;
  font-family: var(--font-sans); font-size: 12.5px;
  color: var(--ink-soft); line-height: 1.5;
}
.test-item em { font-style: italic; color: var(--ink); }
.test-check {
  flex-shrink: 0; width: 17px; height: 17px;
  border: 2px solid var(--ink); border-radius: 2px;
  margin-top: 1px; position: relative;
}
.test-checked::after {
  content: '✓'; position: absolute; top: -4px; left: 1px;
  font-size: 14px; color: var(--ink); font-weight: 700;
}

/* Test result */
.test-result {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  background: var(--paper-dark); border: 2px solid var(--ink);
  padding: 16px; margin-bottom: 10px; text-align: center;
}
.test-result-face { width: 90px; flex-shrink: 0; }
.test-result-face svg { width: 90px; height: 90px; display: block; }
.test-result-text { flex: 1; }
.test-result-title {
  font-family: var(--font-serif); font-size: 14px;
  font-weight: 700; color: var(--ink); margin-bottom: 5px;
}
.test-result-body {
  font-family: var(--font-sans); font-size: 12.5px;
  color: var(--ink-soft); line-height: 1.55; margin-bottom: 5px;
}
.test-result-body em { font-style: italic; color: var(--ink); }
.test-result-footer { font-size: 13px; color: var(--ink-muted); display: block; }

/* Nota al pie test */
.test-footnote {
  display: flex; gap: 5px; align-items: flex-start;
  font-family: var(--font-sans); font-size: 10.5px;
  color: var(--ink-muted); line-height: 1.4;
  padding-top: 8px; border-top: 0.75px solid var(--paper-rule);
  margin-bottom: 4px;
}
.test-footnote-mark { font-weight: 700; flex-shrink: 0; }

/* ═══════════════════════════════════════
   COLECCIÓN
═══════════════════════════════════════ */
.collection-page { padding: 0 44px 40px; justify-content: space-between; }

.collection-header {
  border-bottom: 1.5px solid var(--ink);
  padding-bottom: 16px; margin-bottom: 20px;
}
.collection-series-label {
  font-family: var(--font-sans); font-size: 9.5px; font-weight: 500;
  letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--ink-muted); margin-bottom: 6px;
}
.collection-main-title {
  font-family: var(--font-serif);
  font-size: clamp(30px, 6.5vw, 44px);
  font-weight: 900; color: var(--ink);
  line-height: 1; letter-spacing: -0.02em; text-transform: uppercase;
  margin-bottom: 2px;
}
.collection-by {
  font-family: var(--font-serif); font-size: 15px;
  color: var(--ink-soft); margin-bottom: 10px;
}
.collection-by em { font-style: italic; }
.collection-tagline {
  font-family: var(--font-sans); font-size: 12.5px;
  color: var(--ink-soft); line-height: 1.6; font-style: italic;
  margin-top: 10px;
}

.book-list { flex: 1; display: flex; flex-direction: column; margin-bottom: 16px; }
.book-list-item {
  display: flex; align-items: center; gap: 12px;
  padding: 11px 0; border-bottom: 1px solid var(--paper-dark);
  opacity: 0.5; transition: opacity 0.18s;
}
.book-list-item:hover { opacity: 0.78; }
.book-list-item-active { opacity: 1; }

.book-num {
  font-family: var(--font-serif); font-size: 20px; font-weight: 900;
  color: var(--ink-muted); width: 30px; flex-shrink: 0; line-height: 1;
}
.book-list-item-active .book-num { color: var(--ink); }
.book-info { flex: 1; }
.book-list-title {
  font-family: var(--font-serif); font-size: 14.5px; font-weight: 700;
  font-style: italic; color: var(--ink); margin-bottom: 2px;
}
.book-list-desc {
  font-family: var(--font-sans); font-size: 11px;
  color: var(--ink-muted); line-height: 1.45;
}
.book-badge {
  font-family: var(--font-sans); font-size: 8.5px; font-weight: 600;
  letter-spacing: 0.1em; text-transform: uppercase;
  background: var(--ink); color: var(--paper);
  padding: 4px 8px; border-radius: 2px; white-space: nowrap; flex-shrink: 0;
}
.book-badge-soon {
  background: transparent; color: var(--ink-muted);
  border: 1.5px solid var(--paper-rule);
}

/* Footer colección con tres filetes */
.collection-footer { padding-top: 16px; text-align: center; }
.footer-rule-triple {
  display: flex; align-items: center; gap: 5px;
  margin: 0 auto 12px; width: 60px;
}
.footer-rule-triple span {
  flex: 1; height: 1.5px; background: var(--ink); display: block;
}
.footer-rule-triple span:nth-child(2) { height: 3px; }
.footer-brand {
  font-family: var(--font-serif); font-size: 17px; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink);
  margin-bottom: 5px;
}
.footer-tagline { font-size: 13px; color: var(--ink-muted); }

/* ═══════════════════════════════════════
   UTILS
═══════════════════════════════════════ */
.caveat-text { font-family: var(--font-hand); }

/* ── Índice (TOC) ── */
.toc-row { transition: background .15s; border-radius: 3px; padding-left: 4px !important; padding-right: 4px !important; }
.toc-row:hover { background: #f4f2ee; }

/* ═══════════════════════════════════════
   RESPONSIVE
═══════════════════════════════════════ */
@media (max-width: 620px) {
  body { padding: 64px 0 48px; align-items: flex-start; }
  .page { border-radius: 0; max-width: 100%; }
  .interior-page, .interior-page-special, .collection-page { padding: 0 22px 36px; }
  .running-header { padding: 8px 0 8px; margin-bottom: 14px; }
  .chapter-title { font-size: 22px; }
  .test-grid { grid-template-columns: 1fr; gap: 7px; }
  .interior-doodle { display: none; }
  .sticky-note { float: none; margin: 0 0 12px; max-width: 100%; }
  .dropcap { font-size: 48px; }
  .flip-prev { left: 3px; }
  .flip-next { right: 3px; }
  .nav-btn { padding: 11px 8px; font-size: 9.5px; }
}


/* @section: collection-landing */
body.landing-body {
  background: #faf9f7;
  display: block;
  padding: 0;
  color: var(--ink);
}
.collection-landing-shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 64px 0 36px;
}
.landing-hero {
  border: 1px solid var(--ink);
  padding: clamp(32px, 6vw, 70px) 24px;
  text-align: center;
  margin-bottom: 28px;
  background: #fff;
}
.landing-kicker {
  font-family: var(--font-serif);
  font-size: clamp(18px, 2vw, 26px);
  letter-spacing: .08em;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.landing-hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(46px, 8vw, 92px);
  line-height: .95;
  font-weight: 900;
  letter-spacing: -.04em;
  text-transform: uppercase;
}
.landing-hero h1 em { font-weight: 400; text-transform: none; }
.landing-phrase {
  margin: 22px auto 0;
  max-width: 680px;
  font-family: var(--font-hand);
  font-size: clamp(22px, 3vw, 34px);
  line-height: 1.15;
  color: var(--ink-soft);
}
.volume-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}
.volume-card {
  border: 1px solid var(--ink);
  background: #fff;
  padding: 18px;
  min-height: 520px;
  display: flex;
  flex-direction: column;
  align-items: stretch;
}
.volume-cover-wrap {
  height: 310px;
  border: 1px solid #111;
  background: #faf9f7;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  overflow: hidden;
}
.volume-cover-wrap img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: grayscale(1) contrast(1.05);
}
.volume-num {
  font-family: var(--font-sans);
  font-size: 10px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 8px;
}
.volume-card h2 {
  font-family: var(--font-serif);
  font-size: 28px;
  line-height: 1;
  margin-bottom: 10px;
}
.volume-card p:not(.volume-num) {
  font-size: 14px;
  line-height: 1.55;
  color: var(--ink-soft);
  margin-bottom: 16px;
}
.volume-link, .volume-badge {
  margin-top: auto;
  align-self: flex-start;
  border: 1px solid #111;
  color: #111;
  text-decoration: none;
  padding: 10px 16px;
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  background: #fff;
}
.volume-link:hover { background: #111; color: #fff; }
.volume-soon-box {
  height: 310px;
  border: 1px dashed #111;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 24px;
  color: var(--ink-muted);
  margin-bottom: 16px;
}
.volume-card-soon { opacity: .68; }
.landing-footer {
  text-align: center;
  margin-top: 34px;
  padding-top: 20px;
  border-top: 1px solid #111;
  font-size: 13px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.landing-footer a { color: #111; text-decoration: none; text-transform: none; letter-spacing: .03em; }
.book-list a.book-list-item { text-decoration: none; color: inherit; }

@media (max-width: 860px) {
  .volume-grid { grid-template-columns: 1fr; }
  .volume-card { min-height: auto; }
  .volume-cover-wrap, .volume-soon-box { height: 360px; }
}