/* ==========================================================================
   Página oficial del libro «Del grito a la regla» — estilos propios.
   Hereda header/footer/botones de style.css. Identidad editorial: papel
   crema, tinta negra y el rojo ladrillo de la portada.
   ========================================================================== */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@600;700&display=swap');

:root {
  --paper: #F3EEE5;
  --paper-2: #EAE2D4;
  --ink-book: #171614;
  --ink-soft: #5b5751;
  --brick: #B5432C;
  --brick-dark: #8F3322;
  --rule: #d9cfbf;
  --serif: 'Playfair Display', 'Roboto Slab', Georgia, serif;
}

.libro-page { background: #fff; color: var(--ink-book); }
.libro-page section { padding: 72px 0; }
@media (max-width: 640px) { .libro-page section { padding: 52px 0; } }

.libro-page .kicker {
  font-size: .72rem; font-weight: 700; letter-spacing: .16em; text-transform: uppercase;
  color: var(--brick); margin-bottom: 14px;
}
.libro-page h2.ed-title {
  font-family: var(--serif); font-weight: 700; line-height: 1.15;
  font-size: clamp(1.6rem, 3.2vw, 2.3rem); letter-spacing: .01em; margin-bottom: 20px;
}
.libro-page .ed-lead { font-size: 1.08rem; line-height: 1.75; color: var(--ink-soft); max-width: 640px; }
.narrow { max-width: 760px; margin: 0 auto; }

/* ---------------- HERO ---------------- */
.hero-libro { background: var(--paper); padding: 56px 0 64px; }
.hero-libro .container { display: grid; grid-template-columns: minmax(280px, 5fr) 6fr; gap: 56px; align-items: center; }
.hero-cover { margin: 0; }
.hero-cover img {
  width: 100%; max-width: 440px; height: auto; aspect-ratio: 2 / 3;
  box-shadow: 0 24px 50px -20px rgba(23,22,20,.45), 0 2px 6px rgba(0,0,0,.12);
  border-radius: 3px; background: var(--paper-2);
}
.hero-text .kicker { margin-bottom: 18px; }
.hero-text h1 {
  font-family: var(--serif); font-weight: 700; text-transform: uppercase; letter-spacing: .04em;
  font-size: clamp(2.3rem, 5.4vw, 4.1rem); line-height: 1.02; color: var(--ink-book); margin: 0 0 14px;
}
.hero-sub { font-size: clamp(1.02rem, 1.7vw, 1.22rem); line-height: 1.45; color: var(--ink-book); max-width: 480px; }
.hero-author { font-family: var(--serif); font-size: 1.15rem; font-weight: 600; margin: 18px 0 22px; padding-top: 16px; position: relative; }
.hero-author::before { content: ''; position: absolute; top: 0; left: 0; width: 46px; height: 2px; background: var(--brick); }
.hero-lead-libro { color: var(--ink-soft); font-size: 1.02rem; line-height: 1.7; max-width: 520px; }
.hero-price { display: flex; align-items: baseline; gap: 12px; margin: 26px 0 20px; flex-wrap: wrap; }
.hero-price .price { font-family: var(--serif); font-size: clamp(2rem, 4vw, 2.6rem); font-weight: 700; line-height: 1; }
.hero-price small { font-size: .82rem; color: var(--ink-soft); }
.hero-ctas-libro { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.btn-brick { background: var(--brick); color: #fff; letter-spacing: .06em; text-transform: uppercase; font-size: .86rem; padding: 15px 30px; }
.btn-brick:hover, .btn-brick:focus-visible { background: var(--brick-dark); color: #fff; text-decoration: none; }
.btn-quiet { background: transparent; color: var(--ink-book); border: 1.5px solid var(--ink-book); font-size: .86rem; letter-spacing: .06em; text-transform: uppercase; padding: 14px 24px; }
.btn-quiet:hover, .btn-quiet:focus-visible { background: var(--ink-book); color: #fff; text-decoration: none; }
.libro-page .btn:focus-visible { outline: 3px solid rgba(181,67,44,.45); outline-offset: 2px; }
.hero-meta { margin-top: 24px; font-size: .8rem; color: var(--ink-soft); }

@media (max-width: 820px) {
  .hero-libro { padding: 36px 0 48px; }
  .hero-libro .container { grid-template-columns: 1fr; gap: 28px; }
  .hero-cover img { max-width: 300px; margin: 0 auto; }
  .hero-text { text-align: left; }
}

/* ---------------- EL LIBRO ---------------- */
.book-question { font-family: var(--serif); font-size: clamp(1.25rem, 2.6vw, 1.7rem); line-height: 1.35; font-weight: 600; margin-bottom: 22px; }
.book-body { font-size: 1.05rem; line-height: 1.8; color: var(--ink-soft); }
.book-body em { font-style: italic; color: var(--ink-book); }
.ed-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; margin-top: 44px; border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.ed-stat { padding: 26px 22px; border-right: 1px solid var(--rule); }
.ed-stat:last-child { border-right: none; }
.ed-stat .n { font-family: var(--serif); font-size: clamp(2rem, 4vw, 2.7rem); font-weight: 700; line-height: 1; color: var(--ink-book); }
.ed-stat .n small { font-size: .95rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; margin-left: 6px; color: var(--brick); }
.ed-stat .s { font-size: .86rem; color: var(--ink-soft); margin-top: 8px; line-height: 1.5; }
@media (max-width: 640px) {
  .ed-stats { grid-template-columns: 1fr; }
  .ed-stat { border-right: none; border-bottom: 1px solid var(--rule); padding: 18px 4px; }
  .ed-stat:last-child { border-bottom: none; }
}
.launch-note { margin-top: 28px; font-size: .88rem; color: var(--ink-soft); border-left: 2px solid var(--brick); padding-left: 14px; line-height: 1.6; }
.launch-note strong { color: var(--ink-book); }

/* ---------------- QUÉ ENCONTRARÁ ---------------- */
.reader-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border-top: 1px solid var(--rule); margin-top: 10px; }
.reader-item { padding: 30px 28px 30px 0; border-bottom: 1px solid var(--rule); }
.reader-item:nth-child(odd) { border-right: 1px solid var(--rule); padding-right: 36px; }
.reader-item:nth-child(even) { padding-left: 36px; }
.reader-item .num { font-family: var(--serif); color: var(--brick); font-size: .95rem; font-weight: 700; margin-bottom: 10px; }
.reader-item h3 { font-family: var(--serif); font-size: 1.22rem; font-weight: 600; margin-bottom: 10px; }
.reader-item p { color: var(--ink-soft); line-height: 1.7; font-size: .98rem; }
@media (max-width: 640px) {
  .reader-grid { grid-template-columns: 1fr; }
  .reader-item, .reader-item:nth-child(odd), .reader-item:nth-child(even) { border-right: none; padding: 22px 0; }
}

/* ---------------- ESTRUCTURA ---------------- */
.parts { list-style: none; margin: 8px 0 0; padding: 0; border-top: 1px solid var(--rule); }
.parts li { display: grid; grid-template-columns: 120px 1fr; gap: 18px; align-items: baseline; padding: 18px 0; border-bottom: 1px solid var(--rule); }
.parts .pn { font-size: .74rem; font-weight: 700; letter-spacing: .16em; text-transform: uppercase; color: var(--brick); }
.parts .pt { font-family: var(--serif); font-size: 1.35rem; font-weight: 600; }
.parts-closing { margin-top: 26px; font-size: 1.02rem; line-height: 1.7; color: var(--ink-soft); max-width: 620px; }
@media (max-width: 480px) { .parts li { grid-template-columns: 1fr; gap: 4px; } }

/* ---------------- CITA ---------------- */
.cita-section { background: var(--paper); }
.cita { max-width: 800px; margin: 0 auto; text-align: center; padding: 0 12px; }
.cita .mark { font-family: var(--serif); font-size: 5rem; line-height: .6; color: var(--brick); display: block; margin-bottom: 26px; }
.cita blockquote { margin: 0; }
.cita blockquote p { font-family: var(--serif); font-size: clamp(1.25rem, 2.6vw, 1.75rem); line-height: 1.45; font-weight: 600; color: var(--ink-book); }
.cita-pending { font-family: 'Roboto', sans-serif; font-size: .82rem; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-soft); border: 1px dashed var(--brick); padding: 26px 20px; border-radius: 4px; }
.cita figcaption { margin-top: 26px; font-size: .9rem; color: var(--ink-soft); line-height: 1.55; }
.cita figcaption strong { display: block; color: var(--ink-book); font-family: var(--serif); font-size: 1.05rem; margin-bottom: 4px; }
.cita figcaption .src { font-family: 'Roboto', sans-serif; font-weight: 400; font-size: .78rem; letter-spacing: .12em; text-transform: uppercase; color: var(--brick); }

/* ---------------- AUTOR ---------------- */
.autor-grid { display: grid; grid-template-columns: 220px 1fr; gap: 44px; align-items: start; }
.autor-photo { width: 100%; aspect-ratio: 4 / 5; border-radius: 3px; background: var(--paper-2); overflow: hidden; }
.autor-photo img { width: 100%; height: 100%; object-fit: cover; }
.autor-placeholder { height: 100%; display: flex; flex-direction: column; justify-content: flex-end; padding: 16px; font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-soft); border: 1px dashed var(--rule); }
.autor-placeholder .ini { font-family: var(--serif); font-size: 3rem; color: var(--brick); line-height: 1; margin-bottom: auto; }
.autor-text h2.ed-title { margin-bottom: 8px; text-transform: uppercase; letter-spacing: .04em; font-size: clamp(1.35rem, 2.6vw, 1.8rem); }
.autor-text .role { font-size: .82rem; letter-spacing: .1em; text-transform: uppercase; color: var(--brick); font-weight: 700; margin-bottom: 18px; }
.autor-text p { font-size: 1.02rem; line-height: 1.78; color: var(--ink-soft); }
@media (max-width: 640px) { .autor-grid { grid-template-columns: 1fr; gap: 24px; } .autor-photo { max-width: 200px; } }

/* ---------------- COMPRAR ---------------- */
.comprar-section { background: var(--paper); }
.comprar-grid { display: grid; grid-template-columns: 1fr 340px; gap: 48px; align-items: start; }
@media (max-width: 900px) { .comprar-grid { grid-template-columns: 1fr; gap: 28px; } }

.step { background: #fff; border: 1px solid var(--rule); border-radius: 6px; padding: 26px 26px 22px; margin-bottom: 16px; }
.step-h { display: flex; align-items: baseline; gap: 12px; margin-bottom: 18px; }
.step-h .sn { font-family: var(--serif); color: var(--brick); font-weight: 700; font-size: 1.1rem; }
.step-h h3 { font-family: var(--serif); font-size: 1.15rem; font-weight: 600; }
.step-h .hint { margin-left: auto; font-size: .78rem; color: var(--ink-soft); }
@media (max-width: 640px) { .step { padding: 20px 16px 16px; } .step-h .hint { display: none; } }

.product-line { display: grid; grid-template-columns: 64px 1fr auto; gap: 16px; align-items: center; }
.product-line img { width: 64px; height: 96px; object-fit: cover; border-radius: 2px; box-shadow: 0 2px 8px rgba(0,0,0,.18); }
.product-line .pt { font-family: var(--serif); font-weight: 600; font-size: 1.05rem; }
.product-line .pa { font-size: .88rem; color: var(--ink-soft); }
.product-line .pp { font-family: var(--serif); font-weight: 700; font-size: 1.15rem; white-space: nowrap; }
.product-line .pp small { display: block; font-family: 'Roboto', sans-serif; font-weight: 400; font-size: .74rem; color: var(--ink-soft); text-align: right; }
@media (max-width: 480px) { .product-line { grid-template-columns: 56px 1fr; } .product-line .pp { grid-column: 2; text-align: left; } .product-line .pp small { text-align: left; } }

.qty-row { display: flex; align-items: center; gap: 14px; margin-top: 18px; flex-wrap: wrap; }
.qty-row label { font-size: .9rem; font-weight: 600; }
.qty { display: inline-flex; border: 1.5px solid var(--ink-book); border-radius: 6px; overflow: hidden; }
.qty button { width: 44px; height: 44px; background: #fff; border: none; font-size: 1.3rem; cursor: pointer; color: var(--ink-book); }
.qty button:hover { background: var(--paper); }
.qty button:focus-visible { outline: 2px solid var(--brick); outline-offset: -2px; }
.qty input { width: 56px; height: 44px; border: none; border-left: 1.5px solid var(--ink-book); border-right: 1.5px solid var(--ink-book); text-align: center; font-size: 1.1rem; font-weight: 600; font-family: inherit; -moz-appearance: textfield; }
.qty input::-webkit-outer-spin-button, .qty input::-webkit-inner-spin-button { -webkit-appearance: none; }
.qty-sub { font-size: .92rem; color: var(--ink-soft); }
.qty-sub strong { color: var(--ink-book); }

.fgrid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 16px; }
.fgrid .full { grid-column: 1 / -1; }
@media (max-width: 560px) { .fgrid { grid-template-columns: 1fr; } }
.f label { display: block; font-size: .84rem; font-weight: 600; margin-bottom: 6px; }
.f label .req { color: var(--brick); }
.f input, .f select, .f textarea {
  width: 100%; padding: 12px 14px; border: 1.5px solid var(--rule); border-radius: 6px; font: inherit; font-size: 16px; /* 16px evita zoom en iOS */
  color: var(--ink-book); background: #fff; outline: none; transition: border .15s, box-shadow .15s; min-height: 46px;
}
.f input:focus, .f select:focus, .f textarea:focus { border-color: var(--brick); box-shadow: 0 0 0 3px rgba(181,67,44,.14); }
.f textarea { min-height: 88px; resize: vertical; }
.f.invalid input, .f.invalid select { border-color: #b3261e; }
.f .err { display: none; font-size: .78rem; color: #b3261e; margin-top: 5px; }
.f.invalid .err { display: block; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.choice-list { display: grid; gap: 10px; }
.choice { display: grid; grid-template-columns: 22px 1fr auto; gap: 12px; align-items: start; border: 1.5px solid var(--rule); border-radius: 6px; padding: 14px 16px; cursor: pointer; background: #fff; transition: border .15s, background .15s; }
.choice:hover { border-color: var(--ink-soft); }
.choice input { margin-top: 3px; accent-color: var(--brick); width: 18px; height: 18px; }
.choice.selected { border-color: var(--brick); background: #fdf7f4; }
.choice .ct { font-weight: 600; font-size: .96rem; }
.choice .cd { font-size: .82rem; color: var(--ink-soft); line-height: 1.5; margin-top: 2px; }
.choice .cp { font-family: var(--serif); font-weight: 700; white-space: nowrap; }
.choice .cp small { display: block; font-family: 'Roboto', sans-serif; font-weight: 400; font-size: .72rem; color: var(--ink-soft); text-align: right; }
.choice[hidden] { display: none; }
.choice.pay-main { border-width: 2px; }
.choice.pay-main .ct { font-size: 1.02rem; }
.mp-logo { display: inline-block; background: #009EE3; color: #fff; font-size: .68rem; font-weight: 700; letter-spacing: .08em; padding: 3px 8px; border-radius: 3px; margin-left: 8px; vertical-align: middle; }

.summary { background: #fff; border: 1px solid var(--rule); border-radius: 6px; padding: 24px; position: sticky; top: 88px; }
.summary h3 { font-family: var(--serif); font-size: 1.1rem; margin-bottom: 14px; }
.summary .row { display: flex; justify-content: space-between; gap: 12px; font-size: .92rem; padding: 8px 0; border-bottom: 1px solid var(--rule); color: var(--ink-soft); }
.summary .row span:last-child { color: var(--ink-book); font-weight: 600; white-space: nowrap; }
.summary .row.total { border-bottom: none; padding-top: 14px; font-size: 1rem; color: var(--ink-book); }
.summary .row.total span:last-child { font-family: var(--serif); font-size: 1.5rem; font-weight: 700; }
.summary .note { font-size: .78rem; color: var(--ink-soft); margin-top: 8px; line-height: 1.5; }
.summary .btn { width: 100%; text-align: center; margin-top: 16px; }
.summary .btn[disabled] { opacity: .6; cursor: progress; }
.form-msg { display: none; margin-top: 14px; padding: 12px 14px; border-radius: 6px; font-size: .88rem; line-height: 1.5; }
.form-msg.error { display: block; background: #fdecea; color: #7f1d1d; border: 1px solid #f5c2c0; }
.form-msg.info { display: block; background: #eef4ff; color: #1e3a8a; border: 1px solid #c7d7fe; }
.legal { font-size: .76rem; color: var(--ink-soft); margin-top: 14px; line-height: 1.5; }
@media (max-width: 900px) { .summary { position: static; } }

.help-line { text-align: center; margin-top: 32px; font-size: .92rem; color: var(--ink-soft); }
.help-line a { color: var(--brick); font-weight: 600; }

/* ---------------- BARRA MÓVIL ---------------- */
.sticky-buy { display: none; position: fixed; left: 0; right: 0; bottom: 0; z-index: 90; background: var(--ink-book); color: #fff; padding: 10px 16px calc(10px + env(safe-area-inset-bottom)); box-shadow: 0 -6px 20px rgba(0,0,0,.25); transform: translateY(110%); transition: transform .25s; }
.sticky-buy.show { transform: translateY(0); }
.sticky-buy a { display: flex; justify-content: center; align-items: center; gap: 12px; background: var(--brick); color: #fff; text-transform: uppercase; letter-spacing: .08em; font-weight: 700; font-size: .9rem; padding: 14px; border-radius: 6px; text-decoration: none; }
.sticky-buy a .p { font-family: var(--serif); font-size: 1.05rem; letter-spacing: 0; text-transform: none; }
@media (max-width: 820px) { .sticky-buy { display: block; } body.has-sticky { padding-bottom: 76px; } }

/* ---------------- Pedido / gracias ---------------- */
.pedido-wrap { max-width: 640px; margin: 0 auto; }
.pedido-card { background: #fff; border: 1px solid var(--rule); border-radius: 6px; padding: 32px; }
.pedido-card h1 { font-family: var(--serif); text-transform: uppercase; letter-spacing: .04em; font-size: clamp(1.5rem, 4vw, 2.1rem); line-height: 1.15; margin-bottom: 10px; }
.pedido-card .sub { color: var(--ink-soft); margin-bottom: 22px; line-height: 1.6; }
.kv { display: grid; grid-template-columns: 150px 1fr; gap: 10px 16px; border-top: 1px solid var(--rule); padding-top: 16px; }
.kv dt { font-size: .74rem; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-soft); font-weight: 700; padding-top: 3px; }
.kv dd { margin: 0; font-size: 1rem; }
.kv dd.big { font-family: var(--serif); font-size: 1.35rem; font-weight: 700; }
@media (max-width: 480px) { .kv { grid-template-columns: 1fr; gap: 2px 0; } .kv dd { margin-bottom: 10px; } }
.bank { background: var(--paper); border-radius: 6px; padding: 20px 22px; margin-top: 22px; }
.bank h2 { font-family: var(--serif); font-size: 1.15rem; margin-bottom: 12px; }
.bank .kv { border-top: none; padding-top: 0; }
.bank .ref { margin-top: 16px; background: #fff; border: 2px dashed var(--brick); border-radius: 6px; padding: 14px 16px; text-align: center; }
.bank .ref .r { font-family: var(--serif); font-size: 1.5rem; font-weight: 700; letter-spacing: .04em; }
.bank .ref .rl { font-size: .78rem; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-soft); }
.pending-tag { display: inline-block; background: #fff4e5; color: #7c3d00; border: 1px solid #f5cf9c; padding: 6px 12px; border-radius: 4px; font-size: .82rem; font-weight: 600; margin-bottom: 14px; }
.paid-tag { display: inline-block; background: #eaf7ee; color: #14532d; border: 1px solid #b7e2c4; padding: 6px 12px; border-radius: 4px; font-size: .82rem; font-weight: 600; margin-bottom: 14px; }
.pedido-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 24px; }
.copy-btn { font: inherit; font-size: .78rem; background: #fff; border: 1px solid var(--rule); border-radius: 4px; padding: 4px 10px; cursor: pointer; margin-left: 8px; }
.copy-btn:hover { border-color: var(--brick); color: var(--brick); }

/* accesibilidad */
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
@media (prefers-reduced-motion: reduce) { .sticky-buy { transition: none; } html { scroll-behavior: auto; } }