/* ===== ALFRA Technologies — estilos compartidos blog/artículos ===== */
:root{
  --cyan:#00BCD4;--aqua:#26E0CC;--teal:#00A89C;--deep:#1B6B8A;--charcoal:#3C4750;
  --cool-gray:#F4F7F9;--white:#FFFFFF;--ink:#2B333A;--muted:#69757E;--line:#E3EAEF;
  --font-display:'Sora',-apple-system,'Segoe UI',Arial,sans-serif;
  --font-body:'Inter',-apple-system,'Segoe UI',Arial,sans-serif;
  --maxw:1240px;--maxr:760px;
  --grad-brand:linear-gradient(120deg,var(--cyan) 0%,var(--teal) 55%,var(--deep) 100%);
  --grad-aqua:linear-gradient(120deg,var(--aqua) 0%,var(--cyan) 100%);
  --shadow-sm:0 2px 12px rgba(27,107,138,.06);
  --shadow-md:0 14px 40px rgba(27,107,138,.10);
  --shadow-lg:0 30px 70px rgba(27,107,138,.16);
  --r:18px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font-body);color:var(--ink);background:var(--white);line-height:1.7;font-weight:300;-webkit-font-smoothing:antialiased;overflow-x:hidden}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:300;line-height:1.15;letter-spacing:-.02em;color:var(--charcoal)}
strong,b{font-weight:600;color:var(--deep)}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
.eyebrow{font-family:var(--font-display);font-weight:600;font-size:.74rem;letter-spacing:.28em;text-transform:uppercase;color:var(--teal);margin-bottom:16px;display:inline-block}

/* botones */
.btn{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-display);font-weight:600;font-size:.95rem;padding:14px 28px;border-radius:50px;cursor:pointer;border:none;transition:transform .35s cubic-bezier(.2,1,.3,1),box-shadow .35s,background .35s}
.btn-primary{background:var(--cyan);color:#fff;box-shadow:0 10px 28px rgba(0,188,212,.32)}
.btn-primary:hover{background:var(--deep);transform:translateY(-3px)}
.btn-ghost{background:transparent;color:var(--charcoal);border:1.5px solid var(--line)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan);transform:translateY(-3px)}
.btn-arrow{transition:transform .35s}.btn:hover .btn-arrow{transform:translateX(4px)}

/* navbar */
header.nav{position:fixed;top:0;left:0;right:0;z-index:1000;padding:16px 0;transition:padding .4s,background .4s,box-shadow .4s,border-color .4s;border-bottom:1px solid transparent}
header.nav.scrolled{background:rgba(255,255,255,.88);backdrop-filter:blur(18px) saturate(1.4);padding:10px 0;box-shadow:var(--shadow-sm);border-bottom-color:var(--line)}
.nav-inner{max-width:var(--maxw);margin:0 auto;padding:0 28px;display:flex;align-items:center;justify-content:space-between}
.nav-logo{display:flex;align-items:center;height:58px}
.nav-logo img{height:58px;width:auto;transition:height .4s}
header.nav.scrolled .nav-logo img{height:50px}
.nav-links{display:flex;align-items:center;gap:34px}
.nav-links a{font-family:var(--font-display);font-weight:500;font-size:.92rem;color:var(--charcoal);position:relative;padding:4px 0;transition:color .3s}
.nav-links a::after{content:'';position:absolute;left:0;bottom:-3px;width:0;height:2px;background:var(--grad-aqua);border-radius:2px;transition:width .35s cubic-bezier(.2,1,.3,1)}
.nav-links a:hover{color:var(--cyan)}.nav-links a:hover::after{width:100%}
.nav-cta{padding:11px 22px;font-size:.88rem}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px}
.nav-toggle span{width:26px;height:2px;background:var(--charcoal);border-radius:2px;transition:.3s}

/* hero de página interior */
.page-hero{padding:150px 0 60px;background:radial-gradient(900px 500px at 88% -10%,rgba(38,224,204,.14),transparent 60%),radial-gradient(700px 500px at 0% 10%,rgba(0,188,212,.10),transparent 55%),var(--white)}
.crumbs{font-size:.84rem;color:var(--muted);margin-bottom:18px;font-family:var(--font-display);font-weight:500}
.crumbs a:hover{color:var(--cyan)}
.crumbs span{color:var(--line);margin:0 8px}
.page-hero h1{font-size:clamp(2.1rem,4.4vw,3.2rem);max-width:840px;margin-bottom:18px;font-weight:200}
.page-hero h1 b{font-weight:600;background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.page-hero .lede{font-size:1.12rem;color:var(--muted);max-width:680px}

/* grid de tarjetas blog */
.blog-wrap{padding:36px 0 100px}
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.post-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;transition:transform .45s cubic-bezier(.2,1,.3,1),box-shadow .45s;height:100%}
.post-card:hover{transform:translateY(-10px);box-shadow:var(--shadow-lg)}
.post-cover{aspect-ratio:16/10;position:relative;overflow:hidden;display:grid;place-items:center}
.post-cover svg{width:100%;height:100%}
.post-body{padding:26px 26px 30px;display:flex;flex-direction:column;flex:1}
.post-cat{font-family:var(--font-display);font-weight:600;font-size:.68rem;letter-spacing:.18em;text-transform:uppercase;color:var(--teal);margin-bottom:12px}
.post-card h2{font-size:1.24rem;font-weight:500;margin-bottom:12px;color:var(--charcoal);line-height:1.3}
.post-card p{font-size:.93rem;color:var(--muted);margin-bottom:20px;flex:1}
.post-meta{display:flex;align-items:center;gap:8px;font-size:.82rem;color:var(--cyan);font-family:var(--font-display);font-weight:600}

/* artículo */
article.post{padding:10px 0 90px}
.post-content{max-width:var(--maxr);margin:0 auto}
.post-content p{font-size:1.08rem;color:var(--ink);margin-bottom:22px}
.post-content h2{font-size:1.7rem;font-weight:500;margin:46px 0 18px;color:var(--charcoal)}
.post-content h3{font-size:1.28rem;font-weight:600;margin:32px 0 14px;color:var(--deep)}
.post-content ul,.post-content ol{margin:0 0 24px 4px;padding-left:24px}
.post-content li{font-size:1.06rem;color:var(--ink);margin-bottom:10px}
.post-content strong{color:var(--deep)}
.post-content blockquote{border-left:4px solid var(--cyan);background:var(--cool-gray);padding:22px 26px;border-radius:0 12px 12px 0;margin:30px 0;font-size:1.1rem;color:var(--charcoal)}
.post-tag{display:inline-block;background:var(--cool-gray);border:1px solid var(--line);color:var(--deep);font-family:var(--font-display);font-weight:500;font-size:.78rem;padding:6px 14px;border-radius:50px;margin:2px 4px 2px 0}
.post-figure{margin:30px 0;border-radius:14px;overflow:hidden;border:1px solid var(--line)}
.key-takeaway{background:linear-gradient(135deg,rgba(0,188,212,.07),rgba(38,224,204,.07));border:1px solid var(--line);border-radius:14px;padding:26px 28px;margin:30px 0}
.key-takeaway h4{font-family:var(--font-display);font-weight:600;font-size:.74rem;letter-spacing:.16em;text-transform:uppercase;color:var(--teal);margin-bottom:12px}
.key-takeaway p{font-size:1rem;margin:0;color:var(--charcoal)}

/* CTA dentro de artículo */
.post-cta{max-width:var(--maxr);margin:50px auto 0;background:var(--grad-brand);border-radius:var(--r);padding:40px;text-align:center;position:relative;overflow:hidden}
.post-cta::after{content:'';position:absolute;top:-40%;right:-10%;width:360px;height:360px;background:radial-gradient(circle,rgba(255,255,255,.14),transparent 65%);border-radius:50%}
.post-cta h3{color:#fff;font-size:1.5rem;font-weight:300;margin-bottom:14px;position:relative}
.post-cta p{color:rgba(255,255,255,.9);margin-bottom:24px;position:relative}
.post-cta .btn{position:relative;background:#fff;color:var(--deep)}
.post-cta .btn:hover{background:var(--charcoal);color:#fff}

/* siguiente lectura */
.more{max-width:var(--maxr);margin:64px auto 0;border-top:1px solid var(--line);padding-top:36px}
.more h4{font-family:var(--font-display);font-weight:600;font-size:.74rem;letter-spacing:.18em;text-transform:uppercase;color:var(--teal);margin-bottom:20px}
.more-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.more-row a{border:1px solid var(--line);border-radius:14px;padding:20px;transition:border-color .35s,box-shadow .35s,transform .35s}
.more-row a:hover{border-color:var(--cyan);box-shadow:var(--shadow-md);transform:translateY(-4px)}
.more-row .c{font-size:.68rem;letter-spacing:.16em;text-transform:uppercase;color:var(--teal);font-family:var(--font-display);font-weight:600}
.more-row .t{font-family:var(--font-display);font-weight:500;color:var(--charcoal);margin-top:6px}

/* footer */
footer{background:var(--charcoal);color:rgba(255,255,255,.7);padding:60px 0 28px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.1)}
.foot-brand img{height:46px;width:auto;margin-bottom:18px}
.foot-brand p{font-size:.9rem;max-width:300px;color:rgba(255,255,255,.6)}
.foot-col h5{font-family:var(--font-display);font-weight:600;font-size:.74rem;letter-spacing:.16em;text-transform:uppercase;color:var(--aqua);margin-bottom:16px}
.foot-col a{display:block;font-size:.9rem;color:rgba(255,255,255,.62);padding:6px 0;transition:color .3s,padding-left .3s}
.foot-col a:hover{color:var(--aqua);padding-left:5px}
.foot-bottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;padding-top:24px;font-size:.82rem;color:rgba(255,255,255,.5)}

/* whatsapp */
.wa{position:fixed;bottom:26px;right:26px;z-index:900;width:58px;height:58px;border-radius:50%;background:#25D366;display:grid;place-items:center;box-shadow:0 10px 30px rgba(37,211,102,.4);transition:transform .35s}
.wa:hover{transform:scale(1.08)}.wa svg{width:30px;height:30px;fill:#fff}
.wa::before{content:'';position:absolute;inset:0;border-radius:50%;border:2px solid #25D366;animation:waPulse 2.2s infinite}
@keyframes waPulse{0%{transform:scale(1);opacity:.7}100%{transform:scale(1.7);opacity:0}}

/* reveal */
.js .reveal{opacity:0;transform:translateY(24px);transition:opacity .8s cubic-bezier(.2,1,.3,1),transform .8s cubic-bezier(.2,1,.3,1)}
.js .reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.js .reveal{opacity:1;transform:none}}
.js .reveal.d1{transition-delay:.08s}.js .reveal.d2{transition-delay:.16s}.js .reveal.d3{transition-delay:.24s}

/* responsive */
@media(max-width:900px){.post-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:680px){
  .nav-links{position:fixed;top:0;right:0;height:100vh;width:78%;max-width:320px;background:#fff;flex-direction:column;align-items:flex-start;justify-content:center;gap:26px;padding:0 40px;transform:translateX(100%);transition:transform .4s cubic-bezier(.2,1,.3,1);box-shadow:-20px 0 60px rgba(0,0,0,.12)}
  .nav-links.open{transform:none}.nav-links a{font-size:1.15rem}
  .nav-toggle{display:flex;z-index:1001}
  .nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-toggle.open span:nth-child(2){opacity:0}
  .nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .post-grid{grid-template-columns:1fr}
  .more-row{grid-template-columns:1fr}
  .page-hero{padding:120px 0 40px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:30px}
}