/* ==========================================================================
   PuraLink — CSS base (tokens, reset, utilidades, barra y botones).
   Común a las dos hojas compiladas: assets/css/styles-home.css y styles-legal.css.
   Ver _includes/css/ para el resto de módulos (home.css, legal.css, footer.css,
   wafloat.css, responsive.css) y assets/css/*.css para cómo se combinan.
   ========================================================================== */

/* 1. TOKENS ---------------------------------------------------------------- */
:root{
  --navy:#0e2a4e;
  --navy-2:#123b63;
  --teal:#12857b;
  --teal-2:#17a094;
  --ink:#16283d;
  --body:#4f6479;
  --muted:#7d8fa1;
  --line:rgba(14,42,78,.12);
  --line-soft:rgba(14,42,78,.07);
  --white:#fff;
  --mist:#f1f5f7;
  --sand:#f8f2ea;
  --aqua:#e7f2f0;
  --wa:#25d366;
  --wa-dark:#12a84d;
  --alert:#c2603f;
  --shell:1180px;
  --r-s:10px;
  --r-m:18px;
  --r-l:28px;
  --r-pill:999px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --shadow-s:0 2px 10px rgba(14,42,78,.06);
  --shadow-m:0 18px 44px -22px rgba(14,42,78,.32);
  --shadow-l:0 40px 90px -40px rgba(14,42,78,.42);
  --font-d:"Outfit","Segoe UI",system-ui,-apple-system,sans-serif;
  --font-b:"Manrope","Segoe UI",system-ui,-apple-system,sans-serif;
}

/* 2. BASE ------------------------------------------------------------------ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;
  font-family:var(--font-b);
  font-size:16.5px;
  font-weight:400;
  line-height:1.68;
  color:var(--body);
  background:var(--white);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
h1,h2,h3,h4{
  font-family:var(--font-d);
  color:var(--ink);
  margin:0;
  font-weight:300;
  letter-spacing:-.02em;
  line-height:1.12;
}
h1{font-size:clamp(2.35rem,5.4vw,4.05rem)}
h2{font-size:clamp(1.75rem,3.5vw,2.75rem)}
h3{font-size:1.115rem;font-weight:500;letter-spacing:-.01em;line-height:1.35}
strong{font-weight:700;color:var(--ink)}
em{font-style:italic}
sup{font-size:.62em;vertical-align:super}
::selection{background:var(--teal);color:#fff}
:focus-visible{outline:2.5px solid var(--teal-2);outline-offset:3px;border-radius:6px}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;
  padding:12px 20px;background:var(--navy);color:#fff;border-radius:0 0 var(--r-s) 0;
}
.skip-link:focus{left:0}

/* 3. UTILIDADES ------------------------------------------------------------ */
.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:clamp(20px,5vw,40px)}

.block{padding-block:clamp(72px,9vw,124px);position:relative}
.block--white{background:var(--white)}
.block--mist{background:var(--mist)}
.block--sand{background:var(--sand)}
.block--aqua{background:var(--aqua)}
.block--deep{background:linear-gradient(168deg,#0c2444 0%,#123b63 58%,#0f5f63 100%);color:rgba(255,255,255,.78)}
.block--deep h2,.block--deep h3{color:#fff}

.eyebrow{
  font-family:var(--font-b);
  font-size:.705rem;font-weight:700;
  letter-spacing:.2em;text-transform:uppercase;
  color:var(--teal);margin:0 0 16px;
}
.eyebrow--light{color:#6fd6c6}
.block--deep .eyebrow{color:#6fd6c6}

.head{max-width:760px;margin-bottom:clamp(42px,5vw,64px)}
.head--center{margin-inline:auto;text-align:center}
.head__lead{margin-top:20px;font-size:1.06rem;color:var(--body)}
.block--deep .head__lead{color:rgba(255,255,255,.72)}

.afterword{
  margin:clamp(38px,5vw,58px) auto 0;max-width:660px;text-align:center;
  font-family:var(--font-d);font-size:clamp(1.02rem,1.9vw,1.28rem);
  font-weight:300;line-height:1.55;color:var(--ink);
}

.reveal{opacity:0;transform:translateY(26px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* 4. BARRA + BOTONES ------------------------------------------------------- */
.topbar{
  position:fixed;inset:0 0 auto;z-index:90;
  background:rgba(255,255,255,.82);
  backdrop-filter:saturate(160%) blur(14px);
  -webkit-backdrop-filter:saturate(160%) blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease),background .3s var(--ease);
}
.topbar.is-stuck{border-bottom-color:var(--line-soft);box-shadow:0 6px 24px -18px rgba(14,42,78,.5)}
.topbar__inner{display:flex;align-items:center;gap:28px;height:74px}
.topbar__logo img{width:150px;height:auto}
.topbar__nav{display:flex;align-items:center;gap:26px;margin-left:auto}
.topbar__nav a{
  font-size:.87rem;font-weight:500;color:var(--body);
  position:relative;padding-block:6px;transition:color .25s var(--ease);
}
.topbar__nav a::after{
  content:"";position:absolute;left:0;bottom:0;height:1.5px;width:0;
  background:var(--teal);transition:width .3s var(--ease);
}
.topbar__nav a:hover{color:var(--ink)}
.topbar__nav a:hover::after{width:100%}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:12px 22px;border-radius:var(--r-pill);
  font-family:var(--font-b);font-size:.875rem;font-weight:700;letter-spacing:.005em;
  color:#fff;background:linear-gradient(118deg,var(--wa-dark),var(--wa));
  box-shadow:0 18px 44px -22px rgba(18,168,77,.55);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),filter .25s var(--ease);
  white-space:nowrap;
}
.btn:hover{transform:translateY(-2px);filter:saturate(115%);box-shadow:0 22px 46px -20px rgba(37,211,102,.62)}
.btn:active{transform:translateY(0)}
.btn--lg{padding:16px 30px;font-size:.95rem}
.btn--xl{padding:19px 38px;font-size:1.02rem}
.ico-wa{width:19px;height:19px;fill:currentColor;flex:none}
.btn--lg .ico-wa,.btn--xl .ico-wa{width:21px;height:21px}

.linkarrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.92rem;font-weight:600;color:var(--ink);
  border-bottom:1px solid var(--line);padding-bottom:3px;
  transition:color .25s var(--ease),border-color .25s var(--ease),gap .25s var(--ease);
}
.linkarrow::after{content:"↓";font-size:1.05em;transition:transform .3s var(--ease)}
.linkarrow:hover{color:var(--teal);border-color:var(--teal);gap:12px}
.linkarrow:hover::after{transform:translateY(3px)}

.foot{background:var(--navy);color:rgba(255,255,255,.6);padding-block:38px}
.foot__inner{
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:22px 32px;
}
.foot__logo img{width:126px;height:auto;filter:brightness(0) invert(1);opacity:.9}
.foot__legal{display:flex;flex-wrap:wrap;gap:8px 26px}
.foot__legal a{font-size:.83rem;transition:color .25s var(--ease)}
.foot__legal a:hover{color:#8ee6d6}
.foot__copy{margin:0;font-size:.78rem;color:rgba(255,255,255,.42)}

/* 14. PÁGINAS LEGALES ------------------------------------------------------ */
.legal{padding-block:clamp(110px,12vw,150px) clamp(70px,8vw,100px);background:var(--white)}
.legal__wrap{max-width:760px}
.legal h1{font-size:clamp(2rem,4.2vw,2.9rem);margin-bottom:14px}
.legal__date{font-size:.8rem;color:var(--muted);margin-bottom:44px}
.legal h2{font-size:clamp(1.2rem,2.2vw,1.5rem);margin:44px 0 14px}
.legal p,.legal li{font-size:.96rem;line-height:1.72}
.legal ul{margin:0 0 1em}
.legal ul li{position:relative;padding-left:24px;margin-bottom:9px}
.legal ul li::before{content:"";position:absolute;left:0;top:.62em;width:11px;height:1.5px;background:var(--teal)}
.legal a{color:var(--teal);text-decoration:underline;text-underline-offset:3px}
.legal__todo{
  padding:20px 24px;border-radius:var(--r-m);margin-bottom:38px;
  background:rgba(194,96,63,.07);border:1px solid rgba(194,96,63,.22);
  font-size:.88rem;line-height:1.6;color:var(--alert);
}
.legal__todo strong{color:var(--alert)}
.legal__back{display:inline-flex;align-items:center;gap:8px;margin-top:52px;font-size:.9rem;font-weight:600;color:var(--navy)}
.legal__back:hover{color:var(--teal)}
@media (max-width:860px){.legal{padding-block:44px 70px}}

/* 13. RESPONSIVE ----------------------------------------------------------- */
@media (max-width:960px){
  html{scroll-padding-top:24px}
  .hero__grid{grid-template-columns:1fr;text-align:left}
  .hero__visual{order:-1;max-width:560px}
  .hero__product{left:-2%;bottom:-5%;width:min(160px,32%)}
  .hero__badge{right:0;top:6%}
  .proc{grid-template-columns:1fr}
  .proc__tube{max-width:300px;margin-inline:auto}
  .cut{grid-template-columns:1fr}
  .split--flip .split__media{order:-1}
  .certs__grid{grid-template-columns:repeat(auto-fill,minmax(140px,1fr))}
}

/* --- Modo móvil: la barra pasa abajo (logo + WhatsApp) ------------------- */
@media (max-width:860px){
  html{scroll-padding-top:20px}
  body{padding-bottom:74px}

  .topbar{
    inset:auto 0 0;
    background:rgba(255,255,255,.94);
    border-top:1px solid var(--line-soft);
    border-bottom:0;
    box-shadow:0 -8px 30px -18px rgba(14,42,78,.55);
    padding-bottom:env(safe-area-inset-bottom);
  }
  .topbar.is-stuck{box-shadow:0 -8px 30px -18px rgba(14,42,78,.55)}
  .topbar__inner{height:68px;gap:14px;justify-content:space-between}
  .topbar__logo img{width:118px}
  .topbar__nav{display:none}
  .topbar .btn{
    margin-left:0;padding:12px 20px;font-size:.83rem;
    background:var(--wa);box-shadow:0 10px 26px -12px rgba(37,211,102,.75);
    position:relative;
  }
  .topbar .btn::after{
    content:"";position:absolute;inset:0;border-radius:inherit;
    border:2px solid var(--wa);animation:ringpulse 2.6s var(--ease) infinite;
  }
  @keyframes ringpulse{
    0%{transform:scale(1);opacity:.7}
    70%{transform:scale(1.22);opacity:0}
    100%{transform:scale(1.22);opacity:0}
  }

  /* Ya hay un botón de WhatsApp en la barra fija de abajo: el flotante estorbaría. */
  .wafloat{display:none}

  .hero{padding-block:56px 72px}
  .glass-demo__arrow{padding-bottom:44px}
  .glass-demo__arrow svg{width:38px}
  .quote{padding:30px 26px}
}

@media (max-width:600px){
  body{font-size:16px}

  /* Los CTA dejan de ir en una sola línea: se ajustan al ancho disponible */
  .btn{white-space:normal;text-align:center;line-height:1.32;max-width:100%}
  .btn--lg{padding:15px 22px;font-size:.9rem}
  .btn--xl{padding:17px 24px;font-size:.94rem;width:100%;max-width:330px}
  .finale .btn{margin-inline:auto}

  .hero__actions{flex-direction:column;align-items:stretch;gap:20px}
  .hero__actions .btn{width:100%}
  .linkarrow{align-self:flex-start}
  .hero__product{position:static;width:auto;flex-direction:row;gap:14px;margin-top:18px;justify-content:center}
  .hero__product img{height:96px}
  .hero__product-tag{text-align:left}
  .hero__badge{right:12px;top:12px;padding:10px 15px}
  .hero__badge-num{font-size:1.24rem}
  .hero__trust{line-height:2}
  .hero__trust-sep{margin-inline:7px}
  .fear,.ben,.vs{padding:28px 24px}
  .perliter__vs{width:100%;text-align:center}
  .split__seal{width:88px;height:88px;right:-8px;bottom:16px}
  .split__seal-txt{font-size:.6rem}
  .foot__inner{flex-direction:column;text-align:center}
  .foot__legal{justify-content:center}
  .cut__figure{width:min(250px,72vw)}
  .cut__item{padding:14px 14px}
  .calc{padding:26px 22px}
}

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