/* Hoja de estilos compartida del blog de Txelux — mismo sistema de
   diseño que la landing (index.html), separada en un archivo aparte
   para no repetir todo el bloque <style> en cada artículo nuevo.
   Cualquier artículo futuro solo necesita enlazar este archivo. */

:root{
  --ink:#142238; --canvas:#F6F4EF; --surface:#FFFFFF;
  --teal:#3AAFAA; --teal-dim:#3AAFAA1a;
  --champagne:#C9A66B; --champagne-dim:#C9A66B22;
  --muted:#5B6B7A; --line:#E7E2D7; --brick:#B5654A;
}
*{box-sizing:border-box; margin:0; padding:0;}
html{scroll-behavior:smooth;}
body{background:var(--canvas); color:var(--ink); font-family:'Inter',sans-serif; line-height:1.6;}
h1,h2,h3{font-family:'Fraunces',serif; font-weight:500; letter-spacing:-.01em;}
a{color:var(--teal); text-decoration:none;}
a:hover{text-decoration:underline;}
.wrap{max-width:760px; margin:0 auto; padding:0 24px;}
.wide{max-width:1120px;}
@media (max-width:600px){ .wrap{padding:0 20px;} }

/* ===== NAV (idéntica a la de la landing) ===== */
nav{position:sticky; top:0; z-index:40; background:rgba(246,244,239,.92); backdrop-filter:blur(10px); border-bottom:1px solid var(--line);}
nav .wrap{max-width:1120px; display:flex; align-items:center; justify-content:space-between; height:74px; gap:12px;}
.brand{display:flex; align-items:center; gap:10px; font-family:'Fraunces',serif; font-weight:600; font-size:19px;}
.brand-mark{width:32px; height:32px; border-radius:9px;}
.navlinks{display:flex; gap:34px; font-size:14px; color:var(--muted); font-weight:500;}
.navlinks a{color:inherit; text-decoration:none;}
.navlinks a:hover{color:var(--ink); text-decoration:none;}

.nav-toggle{display:none; background:none; border:none; cursor:pointer; padding:8px; margin:-8px 0 -8px -8px; color:var(--ink); flex-shrink:0;}
.nav-toggle span{display:block; width:20px; height:2px; background:currentColor; border-radius:2px; transition:transform .22s ease, opacity .22s ease;}
.nav-toggle span + span{margin-top:5px;}
.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);}

@media (max-width:760px){
  .nav-toggle{display:block;}
  .navlinks{
    display:flex; flex-direction:column; gap:0;
    position:absolute; top:100%; left:0; right:0;
    background:var(--surface); border-bottom:1px solid var(--line);
    box-shadow:0 16px 28px -18px rgba(20,34,56,.25);
    padding:0 20px; max-height:0; overflow:hidden; opacity:0;
    transition:max-height .25s ease, opacity .2s ease, padding .25s ease;
  }
  .navlinks.open{max-height:320px; opacity:1; padding:10px 20px 16px;}
  .navlinks a{padding:13px 0; border-bottom:1px solid var(--canvas); font-size:15.5px;}
  .navlinks a:last-child{border-bottom:none;}
}
.btn{display:inline-flex; align-items:center; gap:8px; padding:12px 22px; border-radius:11px; font-size:14px; font-weight:600; text-decoration:none; border:1px solid transparent; cursor:pointer;}
.btn.primary{background:var(--ink); color:#fff;}
.btn.ghost{background:transparent; border-color:var(--line); color:var(--ink);}
.btn.ghost:hover{border-color:var(--ink); text-decoration:none;}

/* ===== BLOG INDEX ===== */
.blog-head{padding:64px 0 40px; text-align:center;}
.eyebrow{font-family:'IBM Plex Mono',monospace; font-size:11.5px; letter-spacing:.1em; text-transform:uppercase; color:var(--teal); margin-bottom:14px; font-weight:500;}
.blog-head h1{font-size:clamp(28px,4.5vw,42px); margin-bottom:12px;}
.blog-head p{color:var(--muted); font-size:16px; max-width:520px; margin:0 auto;}
.post-grid{display:grid; grid-template-columns:repeat(auto-fit,minmax(280px,1fr)); gap:20px; padding:0 0 100px;}
.post-card{background:var(--surface); border:1px solid var(--line); border-radius:16px; padding:26px 24px; display:flex; flex-direction:column; gap:10px; transition:transform .3s ease, box-shadow .3s ease;}
.post-card:hover{transform:translateY(-4px); box-shadow:0 16px 30px -14px rgba(20,34,56,.2);}
.post-date{font-family:'IBM Plex Mono',monospace; font-size:11px; color:var(--muted); text-transform:uppercase; letter-spacing:.05em;}
.post-card h2{font-size:18px; line-height:1.3;}
.post-card h2 a{color:var(--ink); text-decoration:none;}
.post-card p{font-size:13.5px; color:var(--muted); line-height:1.55;}
.post-tag{display:inline-block; font-size:10.5px; font-weight:600; text-transform:uppercase; letter-spacing:.04em; color:var(--teal); background:var(--teal-dim); padding:3px 10px; border-radius:999px; width:fit-content;}

/* ===== ARTICLE ===== */
article{padding:48px 0 100px;}
.article-head{margin-bottom:36px;}
.article-head .post-date{margin-bottom:14px;}
.article-head h1{font-size:clamp(28px,4.2vw,40px); line-height:1.2; margin-bottom:16px;}
.article-lede{font-size:17px; color:var(--muted); line-height:1.6;}
article h2{font-size:23px; margin:40px 0 14px;}
article h3{font-size:18px; margin:28px 0 10px;}
article p{font-size:15.5px; margin-bottom:16px; color:#2a3a4d;}
article ul, article ol{margin:0 0 18px 22px;}
article li{font-size:15.5px; margin-bottom:8px; color:#2a3a4d;}
article strong{color:var(--ink);}
article table{width:100%; border-collapse:collapse; margin:20px 0 28px; font-size:14px;}
article th, article td{text-align:left; padding:10px 14px; border-bottom:1px solid var(--line);}
article th{font-family:'IBM Plex Mono',monospace; font-size:11px; text-transform:uppercase; letter-spacing:.04em; color:var(--muted); font-weight:500;}
.callout{background:var(--surface); border:1px solid var(--line); border-left:3px solid var(--teal); border-radius:10px; padding:18px 22px; margin:24px 0; font-size:14.5px;}
.callout.warn{border-left-color:var(--brick);}
.article-cta{background:var(--ink); color:#fff; border-radius:20px; padding:40px 36px; margin-top:48px; text-align:center;}
.article-cta h3{color:#fff; font-size:22px; margin-bottom:10px;}
.article-cta p{color:#B9C4CC; margin-bottom:20px;}
.article-cta .btn.primary{background:var(--teal); color:var(--ink);}
.byline{display:flex; align-items:center; gap:10px; margin-top:36px; padding-top:24px; border-top:1px solid var(--line); font-size:13px; color:var(--muted);}

.share-row{display:flex; align-items:center; gap:10px; margin-top:20px;}
.share-label{font-size:12px; color:var(--muted); font-weight:600; margin-right:2px;}
.share-btn{width:34px; height:34px; border-radius:50%; border:1px solid var(--line); background:var(--surface); display:flex; align-items:center; justify-content:center; color:var(--ink); text-decoration:none; transition:border-color .2s ease, color .2s ease;}
.share-btn:hover{border-color:var(--teal); color:var(--teal); text-decoration:none;}
.share-btn svg{width:16px; height:16px;}
.share-btn.text{font-family:'IBM Plex Mono',monospace; font-weight:700; font-size:13px;}

footer{border-top:1px solid var(--line); padding:32px 0; text-align:center; font-size:12.5px; color:var(--muted);}
.footer-social{display:inline-flex; vertical-align:middle; margin-left:10px; color:var(--muted); transition:color .2s ease;}
.footer-social:hover{color:var(--teal);}
.footer-social svg{width:15px; height:15px; display:block;}