/* ============================================================
   books.infoplay | portada
   PLAN (fable-web-design)
   Paleta:  #163A2F verde botella (fondo del hero y pie)
            #FAF8F3 papel (fondo del cuerpo, terreno de apoyo)
            #F2B33D caléndula (acento único: botones, filetes)
            #1C1C1A tinta (texto)   #2E6B52 helecho (secundario)
            #D9E4DC salvia (texto sobre verde)   #E6E1D6 filete
   Tipos:   display Fraunces 900 (autoalojada, variable)
            cuerpo  Archivo 400-600 (autoalojada, variable)
            utilidad Archivo 600 mayúsculas, tracking .09em
   Concepto: una sala de lectura de noche. Hero verde a sangre con
            una estantería de lomos que se desplaza despacio bajo el
            titular; cuerpo en papel con tarjetas editoriales planas.
   Firma:   la estantería animada del hero (tres filas en paralaje,
            solo transform, en pausa fuera de pantalla y con
            reduced-motion). Todo lo demás, quieto y disciplinado.
   Motion:  un sistema. Easing cubic-bezier(.2,.7,.2,1). Carga: el
            texto del hero sube en escalera de 80 ms. Scroll: las
            tarjetas suben 14 px y aparecen una vez. Hover: botones
            y tarjetas suben 2-3 px; el filete de la tarjeta pasa a
            caléndula por opacidad. Bucle de la estantería en
            linear a propósito: un carrusel infinito con easing no
            lineal tartamudea en cada vuelta.
   Lista de vetos: dominante verde + caléndula, papel solo de apoyo
            y acento dorado, no terracota (no es el veto 1). Sin
            degradados. Numeración solo en la secuencia real de 3
            pasos. Sin Inter/Roboto. Accesorio eliminado: no hay
            testimonios ni logos inventados.
   ============================================================ */

@font-face{font-family:"Fraunces";src:url("/landing/fonts/Fraunces-900.woff2") format("woff2");font-weight:900;font-style:normal;font-display:swap;unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Archivo";src:url("/landing/fonts/Archivo-var.woff2") format("woff2");font-weight:400 600;font-style:normal;font-display:swap;unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}

:root{
  --green:#163A2F; --green-2:#24523F; --fern:#2E6B52; --gold:#F2B33D;
  --paper:#FAF8F3; --white:#FFFFFF; --ink:#1C1C1A; --ink-2:#4A4A46;
  --sage:#D9E4DC; --rule:#E6E1D6;
  --ease:cubic-bezier(.2,.7,.2,1);
  --display:"Fraunces",Georgia,"Times New Roman",serif;
  --body:"Archivo","Helvetica Neue",Arial,sans-serif;
  --wrap:1120px;
  --shelf:300px;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
html,body{overflow-x:clip}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--body);font-size:17px;line-height:1.55;font-weight:400;-webkit-font-smoothing:antialiased}
img,svg{display:block;max-width:100%}
a{color:inherit}
p{margin:0}
.wrap{width:min(var(--wrap),calc(100% - 48px));margin:0 auto}

.skip{position:absolute;left:-999px;top:10px;z-index:100;background:var(--gold);color:var(--ink);padding:10px 14px;border-radius:8px;font-weight:600;text-decoration:none}
.skip:focus{left:10px}
:focus-visible{outline:3px solid var(--gold);outline-offset:3px}

h1,h2,h3{font-family:var(--display);font-weight:900;letter-spacing:-.012em;margin:0;text-wrap:balance}
h1{font-size:clamp(2.7rem,6.4vw,5.1rem);line-height:1.02;max-width:14ch;margin-top:18px}
h2{font-size:clamp(1.9rem,3.6vw,2.8rem);line-height:1.1;max-width:22ch;margin-top:12px}
h3{font-size:1.35rem;line-height:1.2}

.eyebrow{font-weight:600;font-size:.78rem;letter-spacing:.09em;text-transform:uppercase;color:var(--gold)}
.eyebrow.dark{color:var(--fern)}

/* ---------- botones y enlaces ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 22px;border-radius:10px;font-weight:600;font-size:1rem;text-decoration:none;transition:transform .25s var(--ease),box-shadow .25s var(--ease)}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--gold);color:var(--ink);box-shadow:0 1px 0 rgba(0,0,0,.08)}
.btn-primary:hover{box-shadow:0 12px 26px -12px rgba(242,179,61,.75)}
.btn-ghost{color:var(--white);background:transparent;border:1.5px solid rgba(255,255,255,.38)}
.btn-ghost:hover{border-color:var(--gold)}
.link{color:var(--sage);font-weight:600;text-decoration:underline;text-underline-offset:5px;text-decoration-thickness:1.5px}
.link:hover{color:var(--gold)}

/* ---------- cabecera sobre el hero ---------- */
.top{position:absolute;top:0;left:0;right:0;z-index:5;padding:22px 0}
.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:10px;color:var(--white);text-decoration:none;font-weight:600;font-size:1.05rem;letter-spacing:.005em}
.brand b{color:var(--gold);font-weight:600}

/* ---------- hero ---------- */
.hero{position:relative;background:var(--green);color:var(--white);overflow:hidden;padding:150px 0 var(--shelf)}
.hero-inner{position:relative;z-index:2;width:min(var(--wrap),calc(100% - 48px));margin:0 auto}
.lede{color:var(--sage);font-size:clamp(1.05rem,1.6vw,1.25rem);line-height:1.5;max-width:56ch;margin-top:24px}
.cta{display:flex;flex-wrap:wrap;gap:16px 26px;align-items:center;margin-top:34px}
.fine{color:var(--sage);opacity:.85;font-size:.92rem;font-weight:500;margin-top:20px}

/* la estantería: firma del hero */
.shelf{position:absolute;left:0;right:0;bottom:0;height:var(--shelf);z-index:1;pointer-events:none;overflow:hidden}
.row{position:absolute;left:0;bottom:0;display:flex;align-items:flex-end;gap:6px;width:max-content;will-change:transform;animation:drift var(--dur) linear infinite}
.r1{--dur:150s;opacity:.62}
.r2{--dur:210s;opacity:.36;bottom:34px;animation-direction:reverse}
.r3{--dur:280s;opacity:.18;bottom:78px}
@keyframes drift{to{transform:translateX(-50%)}}
.shelf.paused .row{animation-play-state:paused}
.spine{position:relative;flex:none;width:var(--w);height:var(--h);background:var(--c);border-radius:2px 2px 0 0;box-shadow:inset 2px 0 0 rgba(255,255,255,.10),inset -1px 0 0 rgba(0,0,0,.28)}
.spine::after{content:"";position:absolute;left:28%;right:28%;top:13%;height:var(--t);background:rgba(250,248,243,.15);border-radius:1px}
.shelf::after{content:"";position:absolute;left:0;right:0;bottom:0;height:5px;background:rgba(0,0,0,.35)}

/* ---------- tarjetas ---------- */
.features{padding:96px 0 40px}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px;margin-top:44px}
.card{position:relative;background:var(--white);border:1px solid var(--rule);border-radius:14px;padding:30px 24px 32px;overflow:hidden;transition:transform .35s var(--ease)}
.card::before{content:"";position:absolute;left:0;right:0;top:0;height:5px;background:var(--accent)}
.card::after{content:"";position:absolute;left:0;right:0;top:0;height:5px;background:var(--gold);opacity:0;transition:opacity .35s var(--ease)}
.card:hover{transform:translateY(-3px)}
.card:hover::after{opacity:1}
.card svg{width:34px;height:34px;color:var(--accent);margin-bottom:18px}
.card h3{margin-bottom:10px}
.card p{color:var(--ink-2);font-size:1rem;max-width:34ch}

/* ---------- pasos ---------- */
.steps{padding:56px 0 100px}
.stepline{list-style:none;padding:0;margin:52px 0 0;display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:36px 28px}
.stepline li{position:relative;padding-top:22px;border-top:2px solid var(--green)}
.num{position:absolute;top:-17px;left:0;width:34px;height:34px;border-radius:50%;background:var(--green);color:var(--gold);font-family:var(--display);font-weight:900;font-size:1rem;display:grid;place-items:center}
.stepline h3{margin:14px 0 8px}
.stepline p{color:var(--ink-2);max-width:40ch}

/* ---------- banda final y pie ---------- */
.band{background:var(--green);color:var(--white);padding:76px 0}
.band-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px 32px}
.band h2{max-width:18ch;margin:0}
.foot{background:var(--green);color:var(--sage);border-top:1px solid rgba(255,255,255,.12);padding:28px 0 38px;font-size:.92rem}
.foot-inner{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px 24px}
.foot a{color:var(--gold);text-underline-offset:4px}
.foot b{color:var(--white);font-weight:600}

/* ---------- movimiento: un solo sistema ---------- */
.hero .eyebrow,.hero h1,.hero .lede,.hero .cta,.hero .fine{opacity:0;transform:translateY(16px);animation:rise .7s var(--ease) forwards}
.hero h1{animation-delay:.08s}
.hero .lede{animation-delay:.16s}
.hero .cta{animation-delay:.24s}
.hero .fine{animation-delay:.32s}
@keyframes rise{to{opacity:1;transform:none}}
.reveal{opacity:0;transform:translateY(14px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .row{animation:none}
  .hero .eyebrow,.hero h1,.hero .lede,.hero .cta,.hero .fine{animation:none;opacity:1;transform:none}
  .reveal{opacity:1;transform:none;transition:none}
  .btn,.card,.card::after{transition:none}
}

/* ---------- 390 px ---------- */
@media (max-width:640px){
  :root{--shelf:190px}
  body{font-size:16px}
  .wrap,.hero-inner{width:calc(100% - 36px)}
  .top{padding:14px 0}
  .brand{font-size:1rem}
  .hero{padding-top:104px}
  .btn{min-height:46px;padding:0 18px}
  .r3{display:none}
  .features{padding:64px 0 24px}
  .steps{padding:40px 0 72px}
  .band{padding:56px 0}
}

/* ---------- selector de idioma (cabecera) ---------- */
.top nav{display:flex;align-items:center;gap:12px}
.lang{display:inline-flex;gap:3px}
.lang button{background:transparent;border:1.5px solid rgba(255,255,255,.28);color:var(--sage);font:inherit;font-weight:600;font-size:.78rem;letter-spacing:.06em;padding:7px 9px;border-radius:8px;cursor:pointer;transition:transform .25s var(--ease)}
.lang button:hover{border-color:var(--gold);transform:translateY(-1px)}
.lang button[aria-pressed="true"]{background:var(--gold);color:var(--ink);border-color:var(--gold)}
@media (max-width:640px){
  .top nav{gap:8px}
  .lang button{padding:6px 7px}
}
@media (prefers-reduced-motion:reduce){ .lang button{transition:none} }