/* ═══════════════════════════════════════════════════════
   LIBRO.CSS — Estilos específicos de página
   ═══════════════════════════════════════════════════════ */

/* ── INDEX: Hero ──────────────────────────────────────── */
.hero {
  min-height: 92vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 6rem clamp(1rem,6vw,5rem) 4rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 80% at 80% 50%, rgba(201,168,76,0.06) 0%, transparent 70%),
    radial-gradient(ellipse 40% 60% at 10% 80%, rgba(124,111,196,0.08) 0%, transparent 60%);
  pointer-events: none;
}

.hero-symbol {
  position: absolute;
  right: clamp(2rem,8vw,8rem);
  top: 50%;
  transform: translateY(-50%);
  font-size: clamp(14rem,25vw,28rem);
  color: rgba(201,168,76,0.04);
  font-family: sans-serif;
  line-height: 1;
  user-select: none;
  pointer-events: none;
  animation: spin 60s linear infinite;
  text-shadow: 0 0 120px rgba(201,168,76,0.15);
}

.hero-content { position: relative; z-index: 1; max-width: 700px; }

.hero-eyebrow {
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1.25rem;
}

.hero-title {
  font-family: var(--font-d);
  font-size: clamp(3rem, 7vw, 7rem);
  font-weight: 300;
  color: var(--cream);
  line-height: 1.0;
  letter-spacing: -0.01em;
  margin-bottom: 0.5rem;
}
.hero-title em { font-style: italic; color: var(--accent-lt); }

.hero-subtit {
  font-family: var(--font-d);
  font-size: clamp(1.2rem, 2.5vw, 1.8rem);
  font-style: italic;
  color: var(--cream-dim);
  margin-bottom: 0.5rem;
}

.hero-autor {
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 2rem;
}
.hero-tagline {
  font-size: 0.8rem;
  color: var(--cream-dim);
  margin-bottom: 2.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.hero-tagline .dot { color: var(--muted); }

.hero-ctas { display: flex; gap: 1rem; flex-wrap: wrap; align-items: center; }

/* ── INDEX: Parts grid ─────────────────────────────────── */
.global-progress {
  display: flex;
  align-items: center;
  gap: 2rem;
  padding: 2rem clamp(1rem,4vw,2.5rem);
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.gp-text h2 {
  font-family: var(--font-d);
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--cream);
  margin-bottom: 0.15rem;
}
.gp-text p {
  font-size: 0.78rem;
  color: var(--muted);
  font-weight: 300;
}

.partes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1px;
  background: var(--border);
}

.parte-card {
  background: var(--bg-dark);
  padding: 2rem;
  transition: background 0.2s;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.parte-card:hover { background: var(--bg-hover); }
.parte-card::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--pc);
  opacity: 0.7;
}
.pc-intro { --pc: var(--col-intro); }
.pc-1     { --pc: var(--col-p1); }
.pc-2     { --pc: var(--col-p2); }
.pc-3     { --pc: var(--col-p3); }
.pc-4     { --pc: var(--col-p4); }
.pc-5     { --pc: var(--col-p5); }
.pc-cierre{ --pc: var(--col-cierre); }

.parte-card-num {
  font-size: 0.62rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--pc);
  margin-bottom: 0.5rem;
}
.parte-card-title {
  font-family: var(--font-d);
  font-size: 1.45rem;
  font-weight: 400;
  color: var(--cream);
  margin-bottom: 0.3rem;
}
.parte-card-subtit {
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 1.25rem;
  font-weight: 300;
  line-height: 1.5;
}
.parte-card-caps {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.parte-caps-count {
  font-size: 0.7rem;
  color: var(--muted);
  font-weight: 400;
}
.parte-progress-bar {
  height: 2px;
  background: rgba(255,255,255,0.06);
  border-radius: 1px;
  margin-top: 0.75rem;
  overflow: hidden;
}
.parte-progress-fill {
  height: 100%;
  background: var(--pc);
  border-radius: 1px;
  transition: width 0.5s var(--ease);
  opacity: 0.7;
}

/* ── Sobre el libro ────────────────────────────────────── */
.sobre-section {
  padding: 5rem clamp(1rem,4vw,2.5rem);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}
@media (max-width: 768px) {
  .sobre-section { grid-template-columns: 1fr; gap: 2rem; }
}
.sobre-left h2 {
  font-family: var(--font-d);
  font-size: 2.5rem;
  font-weight: 300;
  color: var(--cream);
  margin-bottom: 1.5rem;
  line-height: 1.15;
}
.sobre-right p {
  font-size: 0.9rem;
  color: var(--cream-dim);
  font-weight: 300;
  line-height: 1.85;
  margin-bottom: 1rem;
}

/* ── INTRO page ────────────────────────────────────────── */
.portada-interior {
  padding: 8rem clamp(1rem,6vw,5rem) 5rem;
  text-align: center;
  border-bottom: 1px solid var(--border);
  position: relative;
}
.portada-interior::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 80% at 50% 40%, rgba(201,168,76,0.05) 0%, transparent 70%);
  pointer-events: none;
}
.portada-sello {
  font-size: 0.68rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 3rem;
}
.portada-titulo {
  font-family: var(--font-d);
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 300;
  color: var(--cream);
  line-height: 1.05;
  margin-bottom: 0.5rem;
}
.portada-subtit {
  font-family: var(--font-d);
  font-size: 1.6rem;
  font-style: italic;
  color: var(--cream-dim);
  margin-bottom: 2.5rem;
}
.portada-autor {
  font-size: 0.85rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.25rem;
}
.portada-año {
  font-size: 0.72rem;
  color: var(--muted);
  letter-spacing: 0.1em;
}
.portada-symbol {
  font-size: 2rem;
  color: rgba(201,168,76,0.3);
  margin: 2rem 0;
}

.prelim-section {
  padding: 3rem clamp(1rem,4vw,2.5rem);
  border-bottom: 1px solid var(--border);
  max-width: 720px;
  margin: 0 auto;
}
.prelim-label {
  font-size: 0.62rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1.5rem;
}
.dedicatoria-text {
  font-family: var(--font-d);
  font-size: 1.4rem;
  font-style: italic;
  color: var(--cream-dim);
  text-align: center;
  line-height: 1.8;
}
.epigrafe-text {
  font-family: var(--font-d);
  font-size: 1.2rem;
  font-style: italic;
  color: var(--cream-dim);
  line-height: 1.8;
  margin-bottom: 0.75rem;
}
.epigrafe-autor {
  font-size: 0.78rem;
  color: var(--muted);
  text-align: right;
  font-weight: 400;
}

.nota-section {
  padding: 3.5rem clamp(1rem,4vw,2.5rem);
  border-bottom: 1px solid var(--border);
  max-width: 760px;
  margin: 0 auto;
}
.nota-section h2 {
  font-family: var(--font-d);
  font-size: 1.8rem;
  font-weight: 400;
  color: var(--cream);
  margin-bottom: 1.5rem;
}
.nota-section p {
  font-size: 0.9rem;
  line-height: 1.9;
  color: var(--cream-dim);
  font-weight: 300;
  margin-bottom: 1em;
}
.nota-firma {
  font-family: var(--font-d);
  font-size: 1rem;
  font-style: italic;
  color: var(--cream-dim);
  margin-top: 1.5rem;
}

/* ── Índice ────────────────────────────────────────────── */
.indice-section {
  padding: 3rem clamp(1rem,4vw,2.5rem);
  max-width: 760px;
  margin: 0 auto;
}
.indice-section h2 {
  font-family: var(--font-d);
  font-size: 1.8rem;
  font-weight: 400;
  color: var(--cream);
  margin-bottom: 2rem;
}
.indice-parte {
  margin-bottom: 2rem;
}
.indice-parte-titulo {
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 500;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 0.75rem;
}
.indice-cap {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding: 0.5rem 0;
  color: var(--cream-dim);
  font-size: 0.9rem;
  border-bottom: 1px solid rgba(255,255,255,0.03);
  transition: color 0.2s;
  cursor: pointer;
}
.indice-cap:hover { color: var(--cream); }
.indice-cap-num {
  font-family: var(--font-d);
  font-size: 1rem;
  color: var(--muted);
  min-width: 2rem;
}
.indice-cap-title { font-family: var(--font-d); font-size: 1rem; }
.indice-cap-subtit { font-size: 0.72rem; color: var(--muted); margin-top: 0.1rem; }

/* ── CIERRE page ────────────────────────────────────────── */
.practica-integracion {
  padding: 4rem clamp(1rem,4vw,2.5rem);
}
.pi-header {
  max-width: 720px;
  margin: 0 auto 3rem;
  text-align: center;
}
.pi-header h2 {
  font-family: var(--font-d);
  font-size: 2.5rem;
  font-weight: 300;
  color: var(--cream);
  margin-bottom: 0.5rem;
}
.pi-header p {
  font-size: 0.88rem;
  color: var(--muted);
  font-weight: 300;
  line-height: 1.7;
}
.pi-progress {
  max-width: 720px;
  margin: 0 auto 2.5rem;
}
.pi-progress-bar-wrap {
  height: 3px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 0.5rem;
}
.pi-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--deep), var(--accent));
  border-radius: 2px;
  transition: width 0.4s var(--ease);
}
.pi-progress-label {
  font-size: 0.72rem;
  color: var(--muted);
  text-align: right;
}

.pi-areas {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.pi-area {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  overflow: hidden;
}

.pi-area-header {
  padding: 1.25rem 1.25rem 1rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  transition: background 0.2s;
}
.pi-area-header:hover { background: var(--bg-hover); }

.pi-area-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-dim);
  border: 1px solid var(--accent-bdr);
  border-radius: var(--r);
  font-size: 0.9rem;
  color: var(--accent);
  flex-shrink: 0;
}
.pi-area-info h3 {
  font-family: var(--font-d);
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--cream);
}
.pi-area-info p {
  font-size: 0.72rem;
  color: var(--muted);
  font-weight: 300;
}

.pi-area-body { padding: 1.25rem; display: none; }
.pi-area.expanded .pi-area-body { display: block; }

.pi-pregunta {
  font-family: var(--font-d);
  font-size: 0.95rem;
  font-style: italic;
  color: var(--cream-dim);
  margin-bottom: 0.5rem;
  line-height: 1.55;
}
.pi-textarea {
  width: 100%;
  min-height: 80px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 0.65rem;
  color: var(--cream);
  font-family: var(--font-b);
  font-size: 0.82rem;
  font-weight: 300;
  line-height: 1.65;
  resize: vertical;
  transition: border-color 0.2s;
  margin-bottom: 1rem;
}
.pi-textarea:focus { outline: none; border-color: var(--accent-bdr); }
.pi-textarea::placeholder { color: var(--muted); }

.pi-export {
  max-width: 720px;
  margin: 3rem auto 0;
  text-align: center;
}

/* ── Bibliografía ────────────────────────────────────────── */
.biblio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1rem;
  max-width: 1200px;
  margin: 0 auto;
}
.biblio-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 1.25rem;
  transition: border-color 0.2s;
}
.biblio-card:hover { border-color: var(--accent-bdr); }
.biblio-titulo {
  font-family: var(--font-d);
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--cream);
  margin-bottom: 0.2rem;
}
.biblio-autor {
  font-size: 0.72rem;
  color: var(--muted);
  letter-spacing: 0.04em;
  margin-bottom: 0.75rem;
}
.biblio-comentario {
  font-size: 0.82rem;
  color: var(--cream-dim);
  font-weight: 300;
  line-height: 1.75;
}

/* === Pase de legibilidad de lectura - Alquimia 2026-06-13 === */
.modal-content,.modal-body,.leccion-content,.episodio-content,.reader-content{max-width:44rem;margin-left:auto;margin-right:auto}
.modal-content p,.modal-body p,.cap-desarrollo-block p,.cap-apertura-block p,.epilogo-section p,.tab-panel p,.leccion p,.episodio p,.contenido p,.prosa p{font-weight:400;color:#E9E3D4;line-height:1.9;margin-bottom:1.5em}