/* Tienda del libro — Editorial Draco Servicios */
.lb-hero{padding:56px 0 60px}
.lb-hero-grid{display:grid;grid-template-columns:minmax(0,340px) minmax(0,1fr);gap:56px;align-items:center}
.hero .lb-hero-grid > *{max-width:none}
.lb-cover{display:block;width:100%;aspect-ratio:2/3;border-radius:6px;object-fit:cover;box-shadow:0 30px 60px rgba(0,0,0,.55),0 0 0 1px rgba(255,255,255,.08)}
.lb-subtitle{font-size:1.2rem;color:#e2e8f0;margin:-6px 0 12px}
.lb-author{color:#cbd5e1;margin:0 0 16px}
.lb-author strong{color:#fff}
.lb-price-row{display:flex;flex-wrap:wrap;gap:12px;margin:0 0 26px}
.lb-price-chip{display:flex;flex-direction:column;padding:10px 18px;border:1px solid rgba(255,255,255,.25);border-radius:10px;background:rgba(15,23,42,.55);color:#fff;line-height:1.25}
.lb-price-chip span{font-size:.75rem;color:#cbd5e1;text-transform:uppercase;letter-spacing:.8px}
.lb-price-chip strong{font-size:1.35rem}
.lb-price-chip:hover{border-color:#fff;color:#fff;text-decoration:none}
.lb-book{position:relative;aspect-ratio:2/3;perspective:1600px}
.lb-book .lb-cover{position:absolute;inset:0;height:100%;backface-visibility:hidden;transition:transform .7s cubic-bezier(.2,.7,.2,1)}
.lb-book .lb-cover--back{transform:rotateY(180deg)}
.lb-book.is-back .lb-cover--front{transform:rotateY(-180deg)}
.lb-book.is-back .lb-cover--back{transform:rotateY(0)}
.lb-flip{display:flex;justify-content:center;gap:6px;margin-top:16px}
.lb-flip button{font:inherit;font-size:.8rem;font-weight:600;padding:6px 14px;border-radius:var(--pill);border:1px solid rgba(255,255,255,.3);background:transparent;color:#cbd5e1;cursor:pointer}
.lb-flip button[aria-pressed="true"]{background:#fff;color:#0f172a;border-color:#fff}
.lb-flip button:focus-visible{outline:2px solid #fff;outline-offset:2px}
.lb-price-chip small{font-size:.72rem;color:#cbd5e1}
.lb-pay-note{font-size:.86rem;color:#cbd5e1;margin:18px 0 0}
.lb-section .lb-pay-note{color:var(--muted)}

.lb-section{padding:64px 0}
.lb-section h2{font-size:1.75rem;line-height:1.25;margin:0 0 16px}
.lb-two-col{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:40px;align-items:start}
.lb-list{padding-left:20px}
.lb-list li{margin-bottom:6px}
.lb-author-card{height:auto}
.lb-author-card h2{font-size:1.25rem}
.lb-muted{color:var(--muted);font-size:.88rem}
.lb-center{text-align:center}

.lb-buy{background:var(--bg2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.lb-buy-head{max-width:720px;margin:0 0 24px}
.lb-buy .form-alert{max-width:820px;margin:0 0 18px}
.lb-form{max-width:820px;height:auto;padding:32px}
.lb-form-title{font-size:1.05rem;margin:8px 0 0}
.lb-formats{border:0;padding:0;margin:0;display:grid;grid-template-columns:1fr 1fr;gap:14px}
.lb-formats legend{font-size:.84rem;font-weight:600;margin-bottom:8px}
.contact-form label.lb-format{display:flex;gap:12px;align-items:flex-start;padding:16px 18px;border:2px solid var(--line);border-radius:10px;cursor:pointer;font-weight:400;transition:border-color .16s,background .16s}
.contact-form label.lb-format input{width:20px;height:20px;min-height:0;margin-top:3px;flex:0 0 auto;accent-color:var(--red)}
.lb-format:has(input:checked){border-color:var(--red);background:rgba(221,24,59,.04)}
.lb-format-body{display:grid;gap:2px}
.lb-format-name{font-weight:700;font-size:1rem}
.lb-format-price{font-size:1.45rem;font-weight:700;color:var(--red);line-height:1.2}
.lb-format-price small{font-size:.75rem;color:var(--muted);font-weight:500}
.lb-format-detail{font-size:.82rem;color:var(--muted);line-height:1.45}
.lb-doc{display:grid;grid-template-columns:110px minmax(0,1fr);gap:10px}
.lb-span-2{grid-column:span 2}
.lb-shipping{display:grid;gap:17px}
.lb-shipping[hidden]{display:none}
.lb-summary{display:flex;justify-content:space-between;align-items:baseline;gap:12px;padding:14px 18px;border-radius:10px;background:var(--peach);font-weight:600}
.lb-summary strong{font-size:1.4rem;color:var(--red)}

.lb-faq{display:grid;gap:10px;max-width:860px}
.lb-faq details{border:1px solid var(--line);border-radius:8px;padding:14px 18px;background:var(--white)}
.lb-faq summary{cursor:pointer;font-weight:700}
.lb-faq details p{margin:10px 0 0;color:var(--muted)}

.lb-quote{margin:24px 0;padding:6px 0 6px 20px;border-left:4px solid #f5a623;font-family:Georgia,serif;font-size:1.3rem;font-style:italic;line-height:1.4}
.lb-facts{list-style:none;padding:0;margin:20px 0 0;display:flex;flex-wrap:wrap;gap:10px}
.lb-facts li{padding:6px 14px;border:1px solid var(--line);border-radius:var(--pill);font-size:.86rem;background:var(--bg2)}
.lb-toc-section{background:var(--bg2);border-top:1px solid var(--line)}
.lb-toc{list-style:none;padding:0;margin:0 0 18px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px 32px;counter-reset:none}
.lb-toc li{padding:10px 0;border-bottom:1px solid var(--line);font-weight:500;line-height:1.4}
.lb-toc li span{display:block;font-size:.7rem;font-weight:700;letter-spacing:1.2px;text-transform:uppercase;color:var(--red)}
.lb-excerpt{background:#0f172a;color:#e2e8f0}
.lb-narrow-text{max-width:760px}
.lb-kicker{display:inline-block;font-size:.75rem;font-weight:700;letter-spacing:1.4px;text-transform:uppercase;color:#f5a623;margin-bottom:14px}
.lb-excerpt p{font-family:Georgia,serif;font-size:1.12rem;line-height:1.75;margin:0 0 16px}
.lb-excerpt .btn{margin-top:10px}

/* Pago y confirmación */
.lb-narrow{max-width:720px}
.lb-steps{display:flex;gap:8px;margin:0 0 18px;font-size:.82rem;font-weight:600;color:var(--muted);flex-wrap:wrap}
.lb-steps span{padding:6px 12px;border-radius:var(--pill);border:1px solid var(--line)}
.lb-steps .active{background:var(--red);border-color:var(--red);color:#fff}
.lb-steps .done{color:var(--ink)}
.lb-checkout,.lb-status{height:auto;padding:32px}
.lb-checkout h1,.lb-status h1{font-size:1.6rem;line-height:1.25;margin:0 0 16px}
.lb-dl{margin:0 0 6px;display:grid;gap:0}
.lb-dl > div{display:grid;grid-template-columns:130px minmax(0,1fr);gap:12px;padding:10px 0;border-bottom:1px solid var(--line)}
.lb-dl dt{color:var(--muted);font-size:.88rem}
.lb-dl dd{margin:0;font-weight:500}
.lb-dl-total dd{font-size:1.3rem;font-weight:700;color:var(--red)}
.lb-pay-button{margin:18px 0 6px;min-height:56px}
.lb-test-badge{display:inline-block;margin:16px 0 0;padding:6px 12px;border-radius:6px;background:#fef3c7;color:#92400e;font-size:.82rem;font-weight:600}
.lb-status{text-align:center;align-items:center}
.lb-status--ok{border-top:4px solid #16a34a}
.lb-status--wait{border-top:4px solid #f59e0b}
.lb-status--error{border-top:4px solid var(--red)}
.lb-status-icon{width:56px;height:56px;border-radius:50%;background:#16a34a;color:#fff;font-size:1.8rem;display:flex;align-items:center;justify-content:center;margin:0 0 14px}
.lb-download{margin:8px 0 12px}
.lb-spinner{width:44px;height:44px;border-radius:50%;border:4px solid var(--line);border-top-color:#f59e0b;animation:lb-spin 1s linear infinite;margin:0 0 14px}
@keyframes lb-spin{to{transform:rotate(360deg)}}
@media (prefers-reduced-motion: reduce){.lb-spinner{animation:none}}

html[data-theme="dark"] .lb-format:has(input:checked){background:rgba(221,24,59,.12)}
html[data-theme="dark"] .lb-test-badge{background:#422006;color:#fde68a}

@media (max-width:960px){
  .lb-hero-grid{grid-template-columns:minmax(0,1fr);gap:32px}
  .hero .lb-hero-grid > .lb-cover-col{max-width:260px;width:100%;margin:0 auto}
  .lb-two-col{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:640px){
  .lb-toc{grid-template-columns:minmax(0,1fr)}
  .lb-hero{padding:32px 0 40px}
  .lb-section{padding:44px 0}
  .lb-formats,.form-grid{grid-template-columns:minmax(0,1fr)}
  .lb-span-2{grid-column:auto}
  .lb-form,.lb-checkout,.lb-status{padding:22px 18px}
  .lb-dl > div{grid-template-columns:minmax(0,1fr);gap:2px}
  .hero .lb-hero-grid > .lb-cover-col{max-width:210px}
}
@media (prefers-reduced-motion: reduce){.lb-book .lb-cover{transition:none}}
.lb-presale-note{margin:14px 0 0;padding:12px 16px;border-radius:8px;background:#fff7ed;border:1px solid #fed7aa;color:#9a3412;font-size:.9rem}
html[data-theme="dark"] .lb-presale-note{background:#431407;border-color:#9a3412;color:#fed7aa}