/* ---- Landing design system: warm, book-ish, trustworthy ---- */
:root{
  --accent: #9c6b52;              /* overridden per book via inline style on <html> */
  --accent-ink: #6f4636;
  --paper: #faf7f0;
  --card: #ffffff;
  --ink: #2c2a26;
  --muted: #6b665e;
  --line: #e7e0d3;
  --gold: #b8925a;
  --ok: #3f7a52;
  --maxw: 1080px;
  --radius: 16px;
  --shadow: 0 18px 50px rgba(60,45,30,.14);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
section[id]{scroll-margin-top:76px}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font:17px/1.65 "Iowan Old Style","Palatino Linotype",Georgia,serif;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,.display{font-family:"Playfair Display",Georgia,"Times New Roman",serif;line-height:1.12;letter-spacing:-.01em}
a{color:var(--accent-ink)}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.kicker{font:600 12px/1 ui-sans-serif,system-ui,Segoe UI,Roboto,sans-serif;letter-spacing:.22em;text-transform:uppercase;color:var(--gold)}
.btn{display:inline-block;border:0;border-radius:999px;padding:16px 30px;font:700 16px/1 ui-sans-serif,system-ui,sans-serif;
  cursor:pointer;text-decoration:none;transition:transform .12s ease,box-shadow .12s ease}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 10px 24px color-mix(in srgb,var(--accent) 45%,transparent)}
.btn-primary:hover{transform:translateY(-2px)}
.btn-primary[aria-disabled="true"]{background:#c9c1b4;box-shadow:none;cursor:not-allowed;pointer-events:none}
.btn-ghost{background:transparent;color:var(--accent-ink);border:1.5px solid var(--line)}
.small{font:500 13px/1.5 ui-sans-serif,system-ui,sans-serif;color:var(--muted)}

/* sticky header */
.nav{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--paper) 88%,transparent);
  backdrop-filter:saturate(1.2) blur(8px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;height:64px}
.nav .title{font-weight:700;font-size:16px}
.nav .btn{padding:11px 20px;font-size:14px}

/* hero */
.hero{padding:64px 0 48px}
.hero .grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.hero h1{font-size:clamp(30px,4.6vw,52px);margin:14px 0 14px}
.hero .sub{font-size:20px;color:var(--muted);margin:0 0 22px;max-width:34ch}
.proof{list-style:none;padding:0;margin:0 0 26px;display:grid;gap:10px}
.proof li{padding-left:30px;position:relative}
.proof li::before{content:"✓";position:absolute;left:0;top:0;color:var(--ok);font-weight:800}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.trust{margin-top:16px;display:flex;flex-wrap:wrap;gap:14px}
.trust span{font:600 12.5px/1 ui-sans-serif,system-ui,sans-serif;color:var(--muted)}

/* 3D book cover mockup */
.book{perspective:1600px;display:flex;justify-content:center}
.book .obj{position:relative;width:min(300px,72%);aspect-ratio:1600/2560;transform:rotateY(-19deg) rotateX(3deg);
  transform-style:preserve-3d;filter:drop-shadow(0 30px 40px rgba(50,35,20,.35))}
.book .obj img{width:100%;height:100%;object-fit:cover;border-radius:3px 8px 8px 3px;display:block;
  box-shadow:inset 0 0 0 1px rgba(0,0,0,.06)}
.book .obj::before{content:"";position:absolute;left:0;top:0;bottom:0;width:16px;
  background:linear-gradient(90deg,rgba(0,0,0,.32),rgba(255,255,255,.14) 60%,rgba(0,0,0,.12));
  border-radius:3px 0 0 3px;transform:translateZ(-1px)}
.badge{position:absolute;right:-10px;top:-14px;background:var(--gold);color:#fff;border-radius:999px;
  font:800 12px/1 ui-sans-serif,system-ui,sans-serif;padding:9px 13px;box-shadow:var(--shadow);transform:rotate(6deg)}

section{padding:56px 0}
section.tint{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.h-2{font-size:clamp(24px,3.4vw,36px);margin:0 0 8px;text-align:center}
.lede{color:var(--muted);text-align:center;max-width:60ch;margin:0 auto 34px}

.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.card h3{margin:.1em 0 .3em;font-size:20px}
.pains{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;max-width:840px;margin:0 auto}
.pain{background:var(--card);border:1px solid var(--line);border-left:4px solid var(--accent);
  border-radius:10px;padding:14px 16px}

/* weeks map */
.weeks{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;max-width:960px;margin:0 auto}
.week{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;text-align:center}
.week .n{font:800 13px/1 ui-sans-serif,system-ui,sans-serif;letter-spacing:.12em;color:var(--gold);text-transform:uppercase}
.week h3{font-size:18px;margin:8px 0 0}

/* author + testimonials */
.author{max-width:760px;margin:0 auto;display:flex;gap:22px;align-items:center;background:var(--card);
  border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.author .mono{width:74px;height:74px;border-radius:50%;background:var(--accent);color:#fff;flex:0 0 auto;
  display:grid;place-items:center;font:800 26px/1 "Playfair Display",serif}
.quote{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;position:relative}
.quote[data-placeholder]::after{content:"placeholder — replace with a real review";position:absolute;top:8px;right:12px;
  font:600 10px/1 ui-sans-serif,system-ui,sans-serif;color:#b9b1a2;letter-spacing:.04em}
.quote p{margin:0 0 10px;font-style:italic}
.quote .who{font:700 13px/1 ui-sans-serif,system-ui,sans-serif;color:var(--muted)}

/* guarantee + safety */
.guarantee{max-width:820px;margin:0 auto;text-align:center;background:var(--card);border:1px dashed var(--gold);
  border-radius:var(--radius);padding:26px}
.safety{max-width:820px;margin:22px auto 0;font-size:14px;color:var(--muted);background:#fff;
  border:1px solid var(--line);border-radius:12px;padding:16px 18px}
.safety strong{color:var(--ink)}

/* FAQ */
.faq{max-width:780px;margin:0 auto}
details{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:4px 18px;margin:0 0 12px}
summary{cursor:pointer;padding:14px 0;font-weight:700;list-style:none}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";float:right;color:var(--gold);font-weight:800}
details[open] summary::after{content:"–"}
details .a{padding:0 0 16px;color:var(--muted)}

/* final CTA + email */
.final{background:var(--accent);color:#fff;text-align:center}
.final h2{color:#fff}
.final .btn-primary{background:#fff;color:var(--accent-ink)}
.optin{max-width:560px;margin:20px auto 0;display:flex;gap:10px;flex-wrap:wrap;justify-content:center}
.optin input{flex:1 1 240px;border:0;border-radius:999px;padding:15px 20px;font:16px system-ui,sans-serif}
.optin .btn{white-space:nowrap}
.optin .hp{position:absolute !important;left:-9999px !important;width:1px;height:1px;opacity:0;pointer-events:none;flex:0 0 auto}
.optin-note{margin:14px auto 0;max-width:56ch;color:#fff;font:600 14.5px/1.55 ui-sans-serif,system-ui,sans-serif}
.optin-note.err{color:#ffd9d0}
footer{padding:40px 0;color:var(--muted);font-size:13px;text-align:center;border-top:1px solid var(--line)}

@media(max-width:820px){
  .hero .grid{grid-template-columns:1fr;gap:30px}
  .book{order:-1}
  .cards,.pains,.weeks{grid-template-columns:1fr}
  .weeks{grid-template-columns:repeat(2,1fr)}
  .author{flex-direction:column;text-align:center}
}

/* catalog index */
.catalog{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:22px}
.tile{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  text-decoration:none;color:inherit;display:flex;flex-direction:column;transition:transform .12s,box-shadow .12s}
.tile:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.tile img{width:100%;aspect-ratio:1600/2560;object-fit:cover;background:#eee}
.tile .b{padding:14px 16px}
.tile .b h3{font-size:16px;margin:0 0 4px}
.pill{display:inline-block;font:700 10px/1 ui-sans-serif,system-ui,sans-serif;letter-spacing:.08em;text-transform:uppercase;
  color:var(--gold);border:1px solid var(--line);border-radius:999px;padding:5px 9px;margin-bottom:8px}

.also{display:inline-block;color:var(--muted);font:600 13px/1 ui-sans-serif,system-ui,sans-serif;text-decoration:underline}
.also-row{margin-top:10px}
.final .also{color:#fff;opacity:.85}

/* ============ v2 — pulido de venta / story-driven ============ */

/* Calidez de fondo: un amanecer tenue arriba, sin ruido. */
body{background:
  radial-gradient(1200px 520px at 78% -8%, color-mix(in srgb,var(--accent) 12%,transparent), transparent 70%),
  var(--paper);
  background-attachment:fixed,scroll;
}

/* Nav: precio + botón, más presencia comercial. */
.nav .wrap{gap:12px}
.nav .price{margin-left:auto;font:800 13px/1 ui-sans-serif,system-ui,sans-serif;color:var(--accent-ink);
  background:color-mix(in srgb,var(--accent) 12%,transparent);border:1px solid color-mix(in srgb,var(--accent) 28%,transparent);
  border-radius:999px;padding:6px 11px;white-space:nowrap}
@media(max-width:520px){.nav .title{max-width:44vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.nav .price{display:none}}

/* Hero: aura cálida tras la portada + un poco más de aire. */
.hero{padding:76px 0 56px;position:relative}
.book{position:relative}
.book::after{content:"";position:absolute;z-index:0;width:78%;aspect-ratio:1/1;left:50%;top:46%;
  transform:translate(-50%,-50%);border-radius:50%;
  background:radial-gradient(circle,color-mix(in srgb,var(--accent) 34%,transparent),transparent 66%);
  filter:blur(18px);opacity:.7}
.book .obj{position:relative;z-index:1}
.hero h1{font-size:clamp(31px,4.7vw,54px)}
.kicker{position:relative;display:inline-block;padding-bottom:9px}
.kicker::after{content:"";position:absolute;left:0;bottom:0;width:30px;height:2px;background:var(--gold);border-radius:2px}

/* Encabezados de sección con un pequeño trazo de acento. */
.h-2{position:relative;padding-bottom:14px}
.h-2::after{content:"";position:absolute;left:50%;bottom:0;transform:translateX(-50%);width:34px;height:3px;
  background:var(--accent);border-radius:3px;opacity:.85}

/* Dolores: la tarjeta se levanta un pelín, invita a leer. */
.pain{transition:transform .14s ease,box-shadow .14s ease}
.pain:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(60,45,30,.09)}
.card{transition:transform .14s ease,box-shadow .14s ease}
.card:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(60,45,30,.08)}

/* Las 4 semanas como un camino conectado (desktop). */
.weeks{position:relative}
@media(min-width:821px){
  .weeks::before{content:"";position:absolute;top:34px;left:12%;right:12%;height:2px;
    background:linear-gradient(90deg,transparent,var(--line) 12%,var(--line) 88%,transparent);z-index:0}
  .week{position:relative;z-index:1}
  .week .n{position:relative;display:inline-block;padding:4px 12px;border-radius:999px;
    background:color-mix(in srgb,var(--accent) 12%,var(--paper));color:var(--accent-ink)}
}

/* Garantía: sello más cálido. */
.guarantee{background:linear-gradient(180deg,#fff,color-mix(in srgb,var(--gold) 7%,#fff))}

/* ============ v3 — advertorial: relato primero, el cuaderno al final ============ */

/* Hero del relato: solo palabras, como el arranque de una carta. */
.hero-story{padding:86px 0 30px;text-align:center}
.hero-story .wrap{max-width:760px}
.hero-story .kicker::after{left:50%;transform:translateX(-50%)}
.hero-story h1{font-size:clamp(32px,5vw,56px);margin:18px 0 16px}
.hero-story .sub{margin:0 auto 34px;max-width:52ch;font-style:italic}
.scroll-cue{display:inline-flex;align-items:center;gap:10px;color:var(--accent-ink);
  font:600 15px/1 ui-sans-serif,system-ui,sans-serif;text-decoration:none;
  border-bottom:1.5px solid color-mix(in srgb,var(--accent) 40%,transparent);padding-bottom:6px}
.scroll-cue .arrow{display:inline-block;animation:cue-bob 1.6s ease-in-out infinite}
@keyframes cue-bob{0%,100%{transform:translateY(0)}50%{transform:translateY(4px)}}
@media(prefers-reduced-motion:reduce){.scroll-cue .arrow{animation:none}}

/* El relato: columna de lectura editorial. */
.wrap-narrow{max-width:660px;margin:0 auto;padding:0 22px}
.story{padding:34px 0 60px}
.story p{font-size:18.5px;line-height:1.82;margin:0 0 1.35em;color:#3a362f}
.story p.lead::first-letter{font-family:"Playfair Display",Georgia,serif;font-weight:700;
  font-size:3.4em;line-height:.82;float:left;padding:6px 10px 0 0;color:var(--accent-ink)}
.story .pull{margin:1.9em 0;padding:.2em 0 .2em 26px;border-left:3px solid var(--accent);
  font-family:"Playfair Display",Georgia,serif;font-style:italic;font-size:24px;
  line-height:1.4;color:var(--accent-ink)}
.scene-break{text-align:center;color:var(--gold);letter-spacing:.9em;margin:2.4em 0;
  font-size:15px;text-indent:.9em}

/* La revelación: aquí aparece el cuaderno. */
.reveal-book .grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:52px;align-items:center}
.reveal-book .book .obj{width:min(280px,80%)}
.reveal-h{font-size:clamp(26px,3.8vw,40px);margin:14px 0 12px;line-height:1.12}
.reveal-book .sub{font-size:19px;color:var(--muted);margin:0 0 22px;font-style:italic}
.reveal-book .proof{margin-bottom:26px}
@media(max-width:820px){
  .reveal-book .grid{grid-template-columns:1fr;gap:30px}
  .story p{font-size:17.5px}
  .hero-story{padding:64px 0 22px}
}

/* Revelado suave al hacer scroll (solo si hay JS y sin reduced-motion;
   sin JS todo queda visible). */
body.reveal-ready .reveal{opacity:0;transform:translateY(18px);
  transition:opacity .7s cubic-bezier(.2,.6,.2,1),transform .7s cubic-bezier(.2,.6,.2,1)}
body.reveal-ready .reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){body.reveal-ready .reveal{opacity:1;transform:none;transition:none}}
