/* ============================================================
   articulo.css — estilos para /blog y /tutoriales
   Reutiliza las variables y el header/footer de main.css.
   Cubre: el índice (grid de tarjetas) y la página de artículo.
   ============================================================ */

/* ---- contenedor general de página de contenido ---- */
.contenido-page{
  position:relative;
  padding-top:92px;            /* deja espacio al header fijo */
  min-height:100vh;
  /* mismo glow rojo sutil del fondo del sitio */
  background:
    radial-gradient(900px 500px at 80% -5%, rgba(204,31,31,0.10), transparent 60%),
    var(--negro);
}

/* ============================================================
   ÍNDICE — listado de tutoriales / artículos
   ============================================================ */
.idx-head{max-width:760px;margin:0 auto;padding:46px clamp(18px,5vw,40px) 30px;text-align:center}
.idx-head h1{
  font-family:'Playfair Display',Georgia,serif;font-weight:600;
  font-size:clamp(2.2rem,6vw,3.4rem);line-height:1.06;letter-spacing:-0.01em;
  color:var(--blanco-roto);margin-top:14px;
}
.idx-head p{margin:18px auto 0;max-width:560px;font-size:16.5px;line-height:1.7;color:rgba(245,243,240,0.66)}

.cards{
  max-width:1080px;margin:0 auto;padding:14px clamp(18px,5vw,40px) 80px;
  display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:22px;
}
.card{
  display:flex;flex-direction:column;text-decoration:none;
  background:rgba(255,255,255,0.03);border:1px solid var(--gris-borde);border-radius:16px;
  overflow:hidden;transition:transform .2s,border-color .2s;
}
.card:hover{transform:translateY(-3px);border-color:rgba(204,31,31,0.55)}
.card-img{aspect-ratio:16/10;background:#161616;position:relative;overflow:hidden}
.card-img img{width:100%;height:100%;object-fit:cover;display:block}
/* placeholder mientras no hay foto real */
.card-img.ph{display:flex;align-items:center;justify-content:center;color:#3a3a3a;font-size:13px;letter-spacing:0.04em}
.card-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1}
.card-tag{color:var(--rojo);font-size:11.5px;letter-spacing:0.16em;text-transform:uppercase;font-weight:600}
.card-title{font-family:'Playfair Display',Georgia,serif;font-size:21px;font-weight:500;color:var(--blanco-roto);margin:10px 0 0;line-height:1.18}
.card-desc{margin:11px 0 0;font-size:14.5px;line-height:1.6;color:rgba(245,243,240,0.6)}
.card-meta{margin-top:16px;font-size:12.5px;color:var(--gris-medio);display:flex;gap:14px;align-items:center}
.card-link{margin-top:14px;color:var(--rojo);font-size:14px;font-weight:600}

/* ============================================================
   ARTÍCULO — página de lectura
   ============================================================ */
.art{max-width:720px;margin:0 auto;padding:0 clamp(18px,5vw,28px)}

.art-back{display:inline-block;margin:30px 0 0;color:var(--gris-medio);font-size:13.5px;text-decoration:none;transition:color .2s}
.art-back:hover{color:var(--blanco-roto)}

.art-header{padding:22px 0 30px;border-bottom:1px solid var(--gris-borde)}
.art-tag{color:var(--rojo);font-size:12px;letter-spacing:0.16em;text-transform:uppercase;font-weight:600}
.art h1{
  font-family:'Playfair Display',Georgia,serif;font-weight:600;
  font-size:clamp(2rem,5.6vw,3rem);line-height:1.08;letter-spacing:-0.01em;
  color:var(--blanco-roto);margin-top:14px;
}
.art-meta{margin-top:18px;font-size:13px;color:var(--gris-medio);display:flex;flex-wrap:wrap;gap:8px 16px;align-items:center}
.art-meta .by{color:rgba(245,243,240,0.7)}
.art-lead{margin:26px 0 0;font-size:18px;line-height:1.65;color:rgba(245,243,240,0.82)}

/* cuerpo del artículo */
.art-body{padding:10px 0 40px}
.art-body h2{
  font-family:'Playfair Display',Georgia,serif;font-weight:500;
  font-size:clamp(1.5rem,3.6vw,1.9rem);color:var(--blanco-roto);
  margin:46px 0 0;line-height:1.2;
}
.art-body h3{font-size:18px;font-weight:600;color:var(--blanco-roto);margin:30px 0 0}
.art-body p{margin:16px 0 0;font-size:16.5px;line-height:1.75;color:rgba(245,243,240,0.78)}
.art-body a{color:var(--rojo);text-decoration:none;border-bottom:1px solid rgba(204,31,31,0.4)}
.art-body strong{color:var(--blanco-roto);font-weight:600}
.art-body ul{margin:16px 0 0;padding-left:0;list-style:none}
.art-body ul li{position:relative;padding-left:22px;margin:9px 0;font-size:16px;line-height:1.65;color:rgba(245,243,240,0.78)}
.art-body ul li::before{content:"";position:absolute;left:2px;top:10px;width:6px;height:6px;border-radius:50%;background:var(--rojo)}

/* lista de materiales en grid */
.materiales{margin:22px 0 0;display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:10px}
.materiales div{
  background:rgba(255,255,255,0.03);border:1px solid var(--gris-borde);border-radius:11px;
  padding:13px 15px;font-size:14.5px;line-height:1.5;color:rgba(245,243,240,0.82);
}
.materiales div b{color:var(--blanco-roto);display:block;margin-bottom:2px;font-weight:600}

/* pasos numerados */
.paso{display:flex;gap:18px;margin:34px 0 0}
.paso-num{
  flex:none;width:38px;height:38px;border-radius:11px;background:var(--rojo);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:17px;
}
.paso-txt{flex:1}
.paso-txt h3{margin:6px 0 0}
.paso-txt h3:first-child{margin-top:0}

/* cajas de aviso */
.callout{
  margin:26px 0 0;border-radius:13px;padding:16px 18px;
  border:1px solid var(--gris-borde);background:rgba(255,255,255,0.03);
  font-size:15px;line-height:1.65;color:rgba(245,243,240,0.8);
}
.callout.tip{border-left:3px solid var(--rojo)}
.callout.warn{border-left:3px solid #E0A030}
.callout b{color:var(--blanco-roto)}

/* placeholder de foto dentro del artículo */
.art-foto{
  margin:28px 0 0;aspect-ratio:16/9;border-radius:13px;
  background:#141414;border:1px dashed #333;
  display:flex;align-items:center;justify-content:center;
  color:#3c3c3c;font-size:13px;text-align:center;padding:10px;
}
.art-foto figcaption{display:block}

/* CTA al final del artículo */
.art-cta{
  margin:48px 0 0;text-align:center;border-top:1px solid var(--gris-borde);padding:36px 0 0;
}
.art-cta h2{font-family:'Playfair Display',Georgia,serif;font-weight:500;font-size:1.7rem;color:var(--blanco-roto);margin:0}
.art-cta p{margin:12px auto 0;max-width:440px;font-size:15.5px;line-height:1.6;color:rgba(245,243,240,0.66)}
.art-cta .btns{margin-top:24px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.art-cta a{text-decoration:none}
.art-cta .wa{background:var(--rojo);color:#fff;border-radius:12px;padding:14px 26px;font-weight:600;font-size:15px;display:inline-block;transition:transform .2s}
.art-cta .wa:hover{transform:scale(1.04)}
.art-cta .ghost{color:#fff;border:1px solid rgba(255,255,255,0.2);background:rgba(255,255,255,0.08);border-radius:12px;padding:14px 26px;font-weight:500;font-size:15px;display:inline-block}

@media(max-width:560px){
  .paso{gap:13px}
  .paso-num{width:32px;height:32px;font-size:15px}
}