/* =====================================================
   PEPTIDONOMY — Landing Page
   Sistema de marca: oscuro + turquesa, científico, premium
   ===================================================== */

:root{
  --forest:#0F2A2A;
  --teal:#00BFA6;
  --teal-soft:rgba(0,191,166,.55);
  --mint:#D9FAF4;
  --offwhite:#F2F6F6;
  --grey:#A6B1B1;
  --black:#0E1111;
  --ink:#16302F;
  --ink-soft:#46514F;
  --line:#C9D3D1;

  --container:1180px;
  --container-narrow:820px;
  --radius:14px;
  --radius-sm:8px;

  --ease:cubic-bezier(.2,.7,.2,1);
}

/* ============ Reset ============ */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:'Hanken Grotesk',system-ui,-apple-system,Segoe UI,Helvetica,Arial,sans-serif;
  font-weight:400;
  font-size:17px;
  line-height:1.7;
  color:var(--ink);
  background:var(--offwhite);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:0;background:none}
input{font-family:inherit}

.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;
}

/* ============ Tipografía ============ */
.display,.h2,.h3,.kicker,.wordmark,.mech__name,.ladder__num,.ghost-num,.btn,.nav__cta,.detail-line,.footer__tag{
  font-family:'Sora',system-ui,sans-serif;
}
.display{
  font-weight:600;
  font-size:clamp(2.4rem, 6vw, 4.4rem);
  line-height:1.05;
  letter-spacing:-.018em;
  margin:.4em 0 .35em;
}
.display--md{
  font-size:clamp(2rem, 4.6vw, 3.4rem);
}
.h2{
  font-family:'Sora',sans-serif;
  font-weight:600;
  font-size:clamp(1.6rem, 3.2vw, 2.3rem);
  line-height:1.15;
  letter-spacing:-.014em;
  margin:.3em 0 .5em;
}
.h2--xl{
  font-size:clamp(1.9rem, 4vw, 3rem);
  line-height:1.1;
}
.h3{
  font-weight:600;
  font-size:1.18rem;
  line-height:1.25;
  letter-spacing:-.008em;
  margin:0 0 .55em;
}
.lead{
  font-size:clamp(1.02rem, 1.3vw, 1.18rem);
  line-height:1.65;
  color:var(--ink-soft);
  margin:0 0 1.4em;
}
.lead--narrow{max-width:640px;margin-left:auto;margin-right:auto}
.section--dark .lead{color:var(--mint);opacity:.82}

.kicker{
  display:inline-block;
  font-weight:600;
  font-size:11px;
  letter-spacing:.34em;
  text-transform:uppercase;
  margin-bottom:1.1em;
}
.kicker--on-dark{color:var(--teal)}
.kicker--on-light{color:var(--ink-soft)}

/* ============ Layout ============ */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:2;
}
.container--narrow{max-width:var(--container-narrow);text-align:center}
.section{
  position:relative;
  padding:clamp(72px,9vw,128px) 0;
  overflow:hidden;
  isolation:isolate;
}
.section--light{
  background:var(--offwhite);
  color:var(--ink);
}
.section--dark{
  background:var(--forest);
  color:var(--mint);
}
.section--deep{
  background:
    radial-gradient(120% 90% at 78% 18%, #10322F 0%, var(--forest) 42%, var(--black) 100%);
}
.section__head{
  max-width:780px;
  margin-bottom:3.2rem;
}
.section--dark .section__head{margin-left:auto;margin-right:auto;text-align:center}
.section--dark .section__head .lead{color:var(--mint);opacity:.82}

/* Fondo: retícula sutil + grano */
.bg-grid{
  position:absolute;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(to right, rgba(217,250,244,.045) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(217,250,244,.045) 1px, transparent 1px);
  background-size:48px 48px;
  mask-image:radial-gradient(80% 70% at 50% 40%, #000 50%, transparent 100%);
}
.bg-grain{
  position:absolute;inset:0;z-index:0;pointer-events:none;opacity:.035;
  mix-blend-mode:overlay;
  background:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='240' height='240'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%' height='100%' filter='url(%23n)' opacity='1'/></svg>");
}

.section__bg-img{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  z-index:0;opacity:.18;
  mask-image:radial-gradient(70% 60% at 50% 50%, #000 30%, transparent 100%);
}
.section__bg-img--soft{opacity:.12}

/* ============ NAV ============ */
.nav{
  position:fixed;
  top:0;left:0;right:0;
  z-index:50;
  transition:background .35s var(--ease), border-color .35s var(--ease);
  border-bottom:1px solid transparent;
  background:transparent;
}
.nav.is-scrolled{
  background:rgba(15,42,42,.92);
  backdrop-filter:saturate(140%) blur(10px);
  -webkit-backdrop-filter:saturate(140%) blur(10px);
  border-bottom:1px solid rgba(217,250,244,.08);
}
.nav__inner{
  max-width:var(--container);
  margin:0 auto;
  padding:18px 24px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.brand{
  display:inline-flex;align-items:center;gap:12px;
  color:var(--mint);
}
.mark{width:26px;height:26px;flex-shrink:0}
.mark--lg{width:48px;height:48px;margin-bottom:1.2rem}
.wordmark{
  font-weight:600;font-size:14px;letter-spacing:.32em;color:var(--mint);
}
.nav__cta{
  font-family:'Sora',sans-serif;
  font-weight:500;font-size:13px;letter-spacing:.04em;
  color:var(--mint);
  padding:10px 16px;border-radius:999px;
  border:1px solid rgba(217,250,244,.18);
  transition:background .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
}
.nav__cta:hover{background:var(--teal);color:var(--black);border-color:var(--teal)}
.nav__cta:focus-visible{outline:2px solid var(--teal);outline-offset:3px}

/* ============ HERO ============ */
.hero{padding-top:clamp(120px,16vw,180px)}
.hero__tagline{
  position:absolute;top:28px;right:28px;
  font-family:'Sora',sans-serif;font-size:11px;letter-spacing:.34em;
  text-transform:uppercase;color:var(--teal);z-index:3;
  display:none;
}
@media (min-width:960px){
  .hero__tagline{display:inline-block;top:80px}
}
.hero__inner{
  display:grid;
  grid-template-columns:1fr;
  gap:48px;
  align-items:center;
}
@media (min-width:960px){
  .hero__inner{grid-template-columns:1.05fr .95fr;gap:72px}
}
.hero__copy{position:relative}

/* Portada flotante */
.ebook{
  position:relative;
  width:min(380px,80%);
  margin:0 auto;
  aspect-ratio:3/4;
}
.ebook__img{
  position:relative;z-index:2;
  width:100%;height:100%;object-fit:cover;
  border-radius:6px;
  box-shadow:
    0 30px 60px -20px rgba(0,0,0,.55),
    0 12px 25px -10px rgba(0,0,0,.4),
    0 0 0 1px rgba(217,250,244,.06);
  transform:rotate(-1.2deg);
}
.ebook__glow{
  position:absolute;inset:-20% -10% -10% -10%;
  background:radial-gradient(50% 50% at 50% 50%, rgba(0,191,166,.45) 0%, rgba(0,191,166,0) 70%);
  filter:blur(20px);
  z-index:1;
}
.ebook__glow--soft{opacity:.5}
.ebook--small{width:160px;aspect-ratio:3/4;margin-top:24px}
.ebook--small .ebook__img{transform:rotate(-2deg)}

/* ============ Email form ============ */
.email-form{
  margin-top:24px;
  max-width:560px;
}
.email-form--center{margin-left:auto;margin-right:auto;text-align:left}
.email-form__row{
  display:flex;gap:8px;
  background:rgba(217,250,244,.05);
  border:1px solid rgba(217,250,244,.14);
  padding:6px;
  border-radius:999px;
  transition:border-color .2s var(--ease), background .2s var(--ease);
}
.section--light .email-form__row{
  background:#fff;border:1px solid var(--line);
  box-shadow:0 1px 0 rgba(22,48,47,.03);
}
.email-form__row:focus-within{
  border-color:var(--teal);
  background:rgba(0,191,166,.04);
}
.email-form input{
  flex:1;min-width:0;
  border:0;outline:0;background:transparent;
  padding:14px 18px;
  font-size:16px;
  color:var(--mint);
}
.section--light .email-form input{color:var(--ink)}
.email-form input::placeholder{color:rgba(217,250,244,.5)}
.section--light .email-form input::placeholder{color:#8995A0}

.btn{
  position:relative;
  display:inline-flex;align-items:center;justify-content:center;
  font-family:'Sora',sans-serif;font-weight:600;font-size:14px;letter-spacing:.02em;
  padding:14px 22px;border-radius:999px;
  transition:transform .15s var(--ease), background .2s var(--ease), color .2s var(--ease);
  cursor:pointer;white-space:nowrap;
}
.btn--primary{
  background:var(--teal);color:var(--black);
}
.btn--primary:hover{background:#1ad1b6}
.btn--primary:focus-visible{outline:2px solid var(--mint);outline-offset:3px}
.btn:active{transform:translateY(1px)}
.btn[disabled]{opacity:.7;cursor:not-allowed}
.btn__loader{
  display:none;
  width:16px;height:16px;border-radius:50%;
  border:2px solid rgba(14,17,17,.25);
  border-top-color:var(--black);
  animation:spin .8s linear infinite;
  margin-left:8px;
}
.btn.is-loading .btn__label{opacity:.55}
.btn.is-loading .btn__loader{display:inline-block}
@keyframes spin{to{transform:rotate(360deg)}}

.email-form__error{
  font-size:14px;color:#FF8A8A;margin:10px 4px 0;min-height:0;
  font-family:'Sora',sans-serif;font-weight:500;
}
.section--light .email-form__error{color:#C8463A}
.email-form.has-error .email-form__row{border-color:rgba(255,138,138,.55)}
.micro{
  font-size:13px;color:var(--grey);margin:14px 4px 0;
  font-family:'Sora',sans-serif;letter-spacing:.02em;
}
.section--light .micro{color:var(--ink-soft)}

/* Estado success */
.form-success{
  display:flex;align-items:center;gap:14px;
  padding:18px 22px;
  background:rgba(0,191,166,.08);
  border:1px solid rgba(0,191,166,.35);
  border-radius:18px;
  font-family:'Sora',sans-serif;font-weight:500;
  color:var(--mint);
}
.section--light .form-success{color:var(--ink);background:rgba(0,191,166,.08);border-color:rgba(0,191,166,.5)}
.form-success__icon{
  flex-shrink:0;width:36px;height:36px;border-radius:50%;
  background:var(--teal);color:var(--black);
  display:inline-flex;align-items:center;justify-content:center;
  font-weight:700;
}

/* ============ PAIN ============ */
.pain-grid{
  display:grid;grid-template-columns:1fr;gap:20px;
}
@media (min-width:760px){
  .pain-grid{grid-template-columns:repeat(3,1fr);gap:24px}
}
.pain-card{
  position:relative;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:36px 28px 32px;
}
.pain-card .h3{margin-top:18px}
.pain-card p{margin:0;color:var(--ink-soft)}

.ghost-num{
  font-weight:700;
  font-size:64px;line-height:1;
  color:transparent;
  -webkit-text-stroke:1.4px var(--teal-soft);
  letter-spacing:-.02em;
  display:inline-block;
}

/* Esquinas tipo "tick" */
.corner{
  position:absolute;width:13px;height:13px;
  border-color:var(--teal);border-style:solid;border-width:0;
}
.corner--tl{top:14px;left:14px;border-top-width:1.5px;border-left-width:1.5px}
.corner--br{bottom:14px;right:14px;border-bottom-width:1.5px;border-right-width:1.5px}
.corner--teal{border-color:var(--teal)}

/* ============ MECHANISM ============ */
.mech{
  display:grid;
  grid-template-columns:1fr;
  gap:48px;
  align-items:center;
  max-width:1080px;margin:0 auto;
}
@media (min-width:960px){
  .mech{grid-template-columns:1fr 1.1fr;gap:64px}
}
.mech__visual{
  position:relative;padding:28px;
}
.mech__visual img{
  width:100%;
  border-radius:6px;
  box-shadow:0 30px 50px -20px rgba(0,0,0,.5);
}
.mech__visual .corner{width:18px;height:18px;border-width:0}
.mech__visual .corner--tl{top:0;left:0;border-top-width:1.5px;border-left-width:1.5px}
.mech__visual .corner--br{bottom:0;right:0;border-bottom-width:1.5px;border-right-width:1.5px}

.mech__name{
  display:inline-block;
  font-weight:600;color:var(--teal);
  font-size:clamp(1.4rem,2.4vw,1.9rem);
  letter-spacing:-.01em;
  margin-bottom:14px;
}
.mech__exp{font-size:1.05rem;line-height:1.7;color:var(--mint);opacity:.88}
.mech__exp strong{color:var(--mint);font-weight:600;opacity:1}

.ladder{
  display:flex;align-items:center;gap:14px;
  margin:28px 0;flex-wrap:wrap;
}
.ladder__step{
  display:inline-flex;align-items:center;gap:10px;
  padding:10px 16px 10px 12px;
  border:1px solid rgba(0,191,166,.35);
  border-radius:999px;
  background:rgba(0,191,166,.05);
}
.ladder__num{
  width:26px;height:26px;border-radius:50%;
  background:var(--teal);color:var(--black);
  display:inline-flex;align-items:center;justify-content:center;
  font-weight:700;font-size:13px;
}
.ladder__name{font-family:'Hanken Grotesk',sans-serif;color:var(--mint);font-size:14px}
.ladder__line{
  flex:1;min-width:18px;height:1px;
  background:linear-gradient(to right, rgba(0,191,166,.6), rgba(0,191,166,0));
}
.ladder__line:last-child{display:none}

.pull-quote{
  margin:24px 0 0;padding:14px 0 14px 20px;
  border-left:2.5px solid var(--teal);
  font-family:'Sora',sans-serif;font-weight:500;
  font-size:1.1rem;line-height:1.5;letter-spacing:-.005em;
  color:var(--mint);
}

/* ============ INSIDE ============ */
.inside{
  display:grid;grid-template-columns:1fr;gap:48px;align-items:flex-start;
}
@media (min-width:880px){
  .inside{grid-template-columns:1.4fr .9fr;gap:72px}
}
.node-list{list-style:none;margin:0;padding:0}
.node-list li{
  position:relative;
  padding:14px 0 14px 28px;
  border-bottom:1px solid var(--line);
  font-size:1.05rem;line-height:1.55;color:var(--ink);
}
.node-list li:last-child{border-bottom:0}
.node-list li::before{
  content:"";
  position:absolute;left:0;top:1.25em;
  width:8px;height:8px;border-radius:50%;
  background:var(--teal);
  box-shadow:0 0 0 4px rgba(0,191,166,.12);
}
.inside__aside{text-align:center}
.detail-line{
  font-size:13px;color:var(--ink-soft);
  letter-spacing:.06em;margin-top:20px;
}

/* ============ TRUST ============ */
.section--trust{padding:clamp(80px,8vw,120px) 0}
.trust{text-align:center}
.trust .lead{max-width:640px;margin-left:auto;margin-right:auto}

/* ============ FIT (is it for you) ============ */
.fit-grid{
  display:grid;grid-template-columns:1fr;gap:36px;
}
@media (min-width:760px){
  .fit-grid{grid-template-columns:1fr 1fr;gap:48px}
}
.fit-col .h3{margin-bottom:18px}
.fit-col--no .h3{color:var(--ink-soft)}
.check-list{list-style:none;margin:0;padding:0}
.check-list li{
  position:relative;padding:10px 0 10px 34px;line-height:1.55;
  color:var(--ink);
  border-bottom:1px dashed rgba(22,48,47,.12);
}
.check-list li:last-child{border-bottom:0}
.check-list--yes li::before{
  content:"";
  position:absolute;left:0;top:14px;
  width:18px;height:18px;border-radius:50%;
  background:var(--teal);
}
.check-list--yes li::after{
  content:"";position:absolute;left:5px;top:18px;
  width:8px;height:4px;
  border-left:2px solid var(--black);
  border-bottom:2px solid var(--black);
  transform:rotate(-45deg);
}
.check-list--no li{color:var(--ink-soft)}
.check-list--no li::before{
  content:"";
  position:absolute;left:0;top:14px;
  width:18px;height:18px;border-radius:50%;
  border:1.5px solid var(--line);
  background:transparent;
}
.check-list--no li::after{
  content:"";position:absolute;left:7px;top:18px;
  width:10px;height:1.5px;background:var(--ink-soft);
  transform:rotate(45deg);transform-origin:center;
  box-shadow:0 0 0 0 transparent;
}

/* ============ CTA ============ */
.section--cta{text-align:center}
.cta .email-form{margin-top:32px}

/* ============ FOOTER ============ */
.footer{
  background:var(--black);color:var(--grey);
  padding:56px 0 40px;
}
.footer__inner{display:flex;flex-direction:column;gap:20px;align-items:center;text-align:center}
.footer__brand{display:flex;align-items:center;gap:14px;flex-wrap:wrap;justify-content:center}
.footer__brand .mark{width:22px;height:22px}
.footer__brand .wordmark{color:var(--mint);font-size:13px}
.footer__tag{font-size:11px;letter-spacing:.34em;text-transform:uppercase;color:var(--teal)}
.footer__disclaimer{
  max-width:680px;margin:0;font-size:13px;line-height:1.6;
  color:var(--grey);opacity:.85;
}
.footer__meta{
  display:flex;gap:20px;flex-wrap:wrap;justify-content:center;
  font-family:'Sora',sans-serif;font-size:12px;letter-spacing:.04em;
  color:var(--grey);opacity:.7;
}
.footer__meta a:hover{color:var(--teal)}

/* ============ Reveal animations ============ */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}
/* Hero: revela inmediato escalonado */
.hero .reveal{transition-delay:.15s}
.hero .hero__visual.reveal{transition-delay:.35s}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .reveal{opacity:1;transform:none}
}

/* ============ Focus ring global ============ */
:focus-visible{outline:2px solid var(--teal);outline-offset:3px;border-radius:4px}

/* ============ Small screens fine-tuning ============ */
@media (max-width:640px){
  .hero{padding-top:110px;padding-bottom:60px}
  .hero__visual{order:2}
  .ebook{width:min(260px,70%)}
  .email-form__row{flex-direction:column;border-radius:18px;padding:8px;gap:8px}
  .email-form input{padding:14px 16px;text-align:left}
  .btn{width:100%;padding:14px 18px}
  .pain-card{padding:30px 22px 26px}
  .pull-quote{font-size:1rem}
}