/* ============================================================
   NEGOCIO VIRTUAL — BLOG CSS  |  pvirtual.cl
   Fondo blanco · Paleta corporativa azul · Tipografía Sora+DM Sans
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Sora:wght@400;600;700;800&family=DM+Sans:ital,opsz,wght@0,9..40,400;0,9..40,500;1,9..40,400&display=swap');

/* ── Variables ─────────────────────────────────────── */
:root {
  --azul:        #0047CC;
  --azul-os:     #003299;
  --azul-cl:     #EEF4FF;
  --azul-borde:  #C7D8FA;
  --cian:        #00AAFF;
  --verde:       #00B87A;
  --naranja:     #FF6B35;
  --texto:       #1A2340;
  --texto-s:     #4B5875;
  --gris:        #8896AE;
  --borde:       #E4EAF4;
  --fondo:       #FFFFFF;
  --fondo-s:     #F7F9FF;
  --sombra:      0 4px 24px rgba(0,71,204,.08);
  --sombra-md:   0 8px 40px rgba(0,71,204,.13);
  --r:           12px;
  --r-lg:        20px;
}

/* ── Reset ─────────────────────────────────────────── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:'DM Sans',sans-serif;color:var(--texto);background:var(--fondo);line-height:1.75;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{text-decoration:none;color:var(--azul)}

/* ── Utilidades ────────────────────────────────────── */
.container{max-width:1120px;margin:0 auto;padding:0 24px}
.btn{display:inline-flex;align-items:center;gap:8px;font-family:'Sora',sans-serif;font-weight:700;font-size:.9rem;padding:13px 26px;border-radius:10px;transition:all .2s;cursor:pointer;border:none}
.btn-azul{background:var(--azul);color:#fff}
.btn-azul:hover{background:var(--azul-os);transform:translateY(-1px);box-shadow:var(--sombra-md);color:#fff}
.btn-blanco{background:#fff;color:var(--azul)}
.btn-blanco:hover{background:#f0f5ff;transform:translateY(-1px);color:var(--azul)}
.tag{display:inline-flex;align-items:center;gap:6px;font-family:'Sora',sans-serif;font-size:.72rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;padding:5px 14px;border-radius:100px}
.tag-azul{background:var(--azul-cl);color:var(--azul);border:1px solid var(--azul-borde)}
.tag-blanco{background:rgba(255,255,255,.18);color:#fff;border:1px solid rgba(255,255,255,.3)}

/* ── Header ────────────────────────────────────────── */
.site-header{position:sticky;top:0;z-index:100;background:#fff;border-bottom:2px solid var(--azul);box-shadow:0 2px 20px rgba(0,71,204,.07)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{font-family:'Sora',sans-serif;font-size:1.35rem;font-weight:800;color:var(--azul);letter-spacing:-.5px}
.logo span{color:var(--cian)}
.nav{display:flex;align-items:center;gap:6px}
.nav a{font-family:'Sora',sans-serif;font-size:.82rem;font-weight:600;color:var(--gris);padding:8px 14px;border-radius:8px;transition:all .18s}
.nav a:hover,.nav a.active{color:var(--azul);background:var(--azul-cl)}
.nav .cta{background:var(--azul);color:#fff!important;border-radius:9px}
.nav .cta:hover{background:var(--azul-os)}

/* ── Breadcrumb ────────────────────────────────────── */
.breadcrumb{background:var(--fondo-s);border-bottom:1px solid var(--borde);padding:13px 0}
.breadcrumb-inner{display:flex;align-items:center;gap:8px;font-size:.8rem;color:var(--gris)}
.breadcrumb-inner a{color:var(--azul);font-weight:500}
.breadcrumb-inner a:hover{text-decoration:underline}
.bc-sep{color:var(--gris)}

/* ── Article Hero ──────────────────────────────────── */
.art-hero{background:linear-gradient(135deg,var(--azul) 0%,#1856E8 55%,var(--azul-os) 100%);color:#fff;padding:72px 0 60px;position:relative;overflow:hidden}
.art-hero::before{content:'';position:absolute;top:-40%;right:-8%;width:520px;height:520px;border-radius:50%;background:rgba(0,170,255,.1);pointer-events:none}
.art-hero::after{content:'';position:absolute;bottom:-35%;left:-6%;width:380px;height:380px;border-radius:50%;background:rgba(255,255,255,.04);pointer-events:none}
.hero-inner{position:relative;z-index:1;max-width:800px}
.art-hero h1{font-family:'Sora',sans-serif;font-size:clamp(1.85rem,4vw,2.9rem);font-weight:800;line-height:1.13;margin:20px 0 18px;letter-spacing:-.4px}
.art-hero h1 em{font-style:normal;color:var(--cian)}
.art-hero .excerpt{font-size:1.08rem;opacity:.9;line-height:1.7;max-width:680px;margin-bottom:28px}
.art-meta{display:flex;flex-wrap:wrap;gap:20px;font-size:.82rem;opacity:.7}
.art-meta span{display:flex;align-items:center;gap:5px}

/* ── Two-column Layout ─────────────────────────────── */
.art-layout{padding:60px 0 80px}
.art-grid{display:grid;grid-template-columns:1fr 308px;gap:60px;align-items:start}

/* ── Article Body ──────────────────────────────────── */
.art-body h2{font-family:'Sora',sans-serif;font-size:1.5rem;font-weight:700;color:var(--texto);margin:48px 0 16px;padding-bottom:12px;border-bottom:3px solid var(--azul-cl);line-height:1.25}
.art-body h3{font-family:'Sora',sans-serif;font-size:1.12rem;font-weight:700;color:var(--azul);margin:32px 0 10px}
.art-body p{color:#2D3A52;font-size:1.01rem;line-height:1.82;margin-bottom:18px}
.art-body ul,.art-body ol{margin:12px 0 22px 20px}
.art-body li{color:#2D3A52;margin-bottom:9px;line-height:1.7;font-size:1rem}
.art-body strong{color:var(--texto);font-weight:600}
.art-body a{color:var(--azul);font-weight:500}
.art-body a:hover{text-decoration:underline}

/* callouts */
.callout{border-radius:var(--r);padding:24px 28px;margin:32px 0}
.callout-azul{background:var(--azul-cl);border-left:4px solid var(--azul)}
.callout-verde{background:#EDFBF4;border-left:4px solid var(--verde)}
.callout-naranja{background:#FFF4EE;border-left:4px solid var(--naranja)}
.callout h4{font-family:'Sora',sans-serif;font-size:.95rem;font-weight:700;margin-bottom:8px}
.callout-azul h4{color:var(--azul)}
.callout-verde h4{color:#007A50}
.callout-naranja h4{color:#C04A0A}
.callout p{margin-bottom:0;font-size:.95rem}

/* stat row */
.stat-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:14px;margin:32px 0}
.stat-box{background:var(--azul-cl);border-radius:var(--r);padding:22px 16px;text-align:center}
.stat-num{font-family:'Sora',sans-serif;font-size:2rem;font-weight:800;color:var(--azul);display:block;line-height:1}
.stat-lbl{font-size:.78rem;color:var(--gris);margin-top:6px;line-height:1.4}

/* feature cards */
.feat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px;margin:28px 0}
.feat-card{background:#fff;border:1.5px solid var(--borde);border-radius:var(--r);padding:24px 20px;transition:border-color .2s,box-shadow .2s}
.feat-card:hover{border-color:var(--azul);box-shadow:var(--sombra)}
.feat-icon{font-size:2rem;margin-bottom:12px}
.feat-card h4{font-family:'Sora',sans-serif;font-weight:700;font-size:.95rem;color:var(--texto);margin-bottom:7px}
.feat-card p{font-size:.88rem;color:var(--gris);margin-bottom:0;line-height:1.6}

/* checklist */
.chk{list-style:none;padding:0;margin:18px 0 26px}
.chk li{padding:10px 0 10px 36px;position:relative;border-bottom:1px solid var(--borde);font-size:.97rem;color:#2D3A52}
.chk li:last-child{border-bottom:none}
.chk li::before{content:'✓';position:absolute;left:0;top:10px;width:22px;height:22px;background:var(--azul);color:#fff;border-radius:50%;font-size:.7rem;font-weight:700;display:flex;align-items:center;justify-content:center;line-height:1}

/* table */
.art-table{width:100%;border-collapse:collapse;margin:24px 0;font-size:.92rem}
.art-table th{background:var(--azul);color:#fff;font-family:'Sora',sans-serif;font-weight:700;padding:12px 16px;text-align:left}
.art-table td{padding:11px 16px;border-bottom:1px solid var(--borde);color:#2D3A52}
.art-table tr:hover td{background:var(--fondo-s)}

/* CTA banner inline */
.cta-banner{background:linear-gradient(135deg,var(--azul) 0%,#1856E8 100%);color:#fff;border-radius:var(--r-lg);padding:52px 44px;margin:60px 0;text-align:center;position:relative;overflow:hidden}
.cta-banner::before{content:'';position:absolute;top:-50%;right:-10%;width:400px;height:400px;border-radius:50%;background:rgba(255,255,255,.05);pointer-events:none}
.cta-banner h2{font-family:'Sora',sans-serif;font-size:1.75rem;font-weight:800;color:#fff;border:none;padding:0;margin:0 0 14px;line-height:1.2}
.cta-banner p{color:rgba(255,255,255,.88);font-size:1rem;max-width:500px;margin:0 auto 28px}

/* ── Sidebar ────────────────────────────────────────── */
.sidebar{position:sticky;top:86px}
.widget{background:#fff;border:1.5px solid var(--borde);border-radius:var(--r-lg);padding:26px 22px;margin-bottom:22px}
.widget.widget-cta{background:linear-gradient(135deg,var(--azul),#1856E8);border-color:transparent}
.widget h3{font-family:'Sora',sans-serif;font-size:1rem;font-weight:700;color:var(--texto);margin-bottom:12px}
.widget.widget-cta h3{color:#fff}
.widget p{font-size:.87rem;color:var(--gris);line-height:1.65;margin-bottom:14px}
.widget.widget-cta p{color:rgba(255,255,255,.85)}
.toc{list-style:none;padding:0}
.toc li{border-bottom:1px solid var(--borde)}
.toc li:last-child{border-bottom:none}
.toc a{display:block;padding:9px 0;font-size:.85rem;color:var(--gris);transition:color .18s}
.toc a:hover{color:var(--azul)}
.related{list-style:none;padding:0}
.related li{margin-bottom:12px}
.related a{display:flex;align-items:flex-start;gap:7px;font-size:.86rem;color:var(--texto);font-weight:500;line-height:1.38;transition:color .18s}
.related a::before{content:'→';color:var(--azul);font-weight:700;flex-shrink:0;margin-top:1px}
.related a:hover{color:var(--azul)}

/* ── Footer ─────────────────────────────────────────── */
.site-footer{background:#0A0F1E;color:rgba(255,255,255,.65);padding:56px 0 30px;margin-top:80px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:48px;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-logo{font-family:'Sora',sans-serif;font-size:1.25rem;font-weight:800;color:#fff}
.footer-logo span{color:var(--cian)}
.footer-desc{margin-top:12px;font-size:.87rem;line-height:1.7}
.footer-col h4{font-family:'Sora',sans-serif;font-size:.82rem;font-weight:700;color:#fff;text-transform:uppercase;letter-spacing:.08em;margin-bottom:14px}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:9px}
.footer-col a{font-size:.86rem;color:rgba(255,255,255,.55);transition:color .18s}
.footer-col a:hover{color:var(--cian)}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;padding-top:26px;font-size:.8rem}
.footer-bottom a{color:var(--cian)}

/* ── Index-only ─────────────────────────────────────── */
.blog-hero{background:linear-gradient(135deg,var(--azul) 0%,#1856E8 55%,var(--azul-os) 100%);color:#fff;padding:80px 0 70px;text-align:center;position:relative;overflow:hidden}
.blog-hero::before{content:'';position:absolute;top:-30%;right:-8%;width:540px;height:540px;border-radius:50%;background:rgba(0,170,255,.09);pointer-events:none}
.blog-hero::after{content:'';position:absolute;bottom:-40%;left:-5%;width:360px;height:360px;border-radius:50%;background:rgba(255,255,255,.04);pointer-events:none}
.blog-hero-inner{position:relative;z-index:1;max-width:740px;margin:0 auto}
.blog-hero h1{font-family:'Sora',sans-serif;font-size:clamp(2rem,5vw,3.2rem);font-weight:800;line-height:1.12;margin:18px 0 16px;letter-spacing:-.5px}
.blog-hero h1 em{font-style:normal;color:var(--cian)}
.blog-hero p{font-size:1.08rem;opacity:.88;max-width:560px;margin:0 auto}
.intro-strip{background:var(--fondo-s);border-top:1px solid var(--borde);border-bottom:1px solid var(--borde);padding:36px 0;text-align:center}
.intro-strip p{font-size:1rem;color:var(--texto-s);max-width:700px;margin:0 auto;line-height:1.75}
.intro-strip strong{color:var(--azul)}
.sec-header{display:flex;align-items:center;gap:14px;margin:52px 0 28px}
.sec-header h2{font-family:'Sora',sans-serif;font-size:1.35rem;font-weight:800;white-space:nowrap;color:var(--texto)}
.sec-badge{font-family:'Sora',sans-serif;font-size:.68rem;font-weight:700;letter-spacing:.09em;text-transform:uppercase;padding:4px 12px;border-radius:100px;background:var(--azul);color:#fff}
.sec-badge.old{background:#8896AE}
.sec-line{flex:1;height:2px;background:var(--borde)}

/* featured card */
.feat-hero{display:grid;grid-template-columns:1fr 1fr;min-height:320px;border-radius:var(--r-lg);overflow:hidden;background:linear-gradient(135deg,var(--azul),#1856E8);box-shadow:0 12px 48px rgba(0,71,204,.22);margin-bottom:22px;transition:transform .25s,box-shadow .25s}
.feat-hero:hover{transform:translateY(-4px);box-shadow:0 20px 64px rgba(0,71,204,.3)}
.feat-hero-content{padding:44px 40px;display:flex;flex-direction:column;justify-content:center}
.feat-hero-content .tag-blanco{margin-bottom:16px;width:fit-content}
.feat-hero-content h3{font-family:'Sora',sans-serif;font-size:1.55rem;font-weight:800;color:#fff;line-height:1.18;margin-bottom:12px}
.feat-hero-content h3 em{font-style:normal;color:var(--cian)}
.feat-hero-content p{color:rgba(255,255,255,.82);font-size:.94rem;line-height:1.65;margin-bottom:22px}
.feat-hero-content .leer{display:inline-flex;align-items:center;gap:7px;background:#fff;color:var(--azul);font-family:'Sora',sans-serif;font-weight:700;font-size:.87rem;padding:11px 22px;border-radius:9px;transition:transform .18s}
.feat-hero:hover .leer{transform:translateX(4px)}
.feat-hero-visual{display:flex;align-items:center;justify-content:center;font-size:8rem;background:rgba(255,255,255,.06);position:relative}
.feat-hero-visual::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(0,170,255,.07),transparent)}

/* post grid */
.posts-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(310px,1fr));gap:22px;margin-bottom:12px}
.post-card{display:flex;flex-direction:column;background:#fff;border:1.5px solid var(--borde);border-radius:var(--r-lg);overflow:hidden;transition:border-color .2s,box-shadow .2s,transform .2s}
.post-card:hover{border-color:var(--azul);box-shadow:var(--sombra-md);transform:translateY(-3px)}
.card-icon{height:150px;display:flex;align-items:center;justify-content:center;font-size:4.5rem}
.card-body{padding:22px;flex:1;display:flex;flex-direction:column}
.card-cat{font-family:'Sora',sans-serif;font-size:.7rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--azul);margin-bottom:9px}
.card-body h3{font-family:'Sora',sans-serif;font-size:1rem;font-weight:700;color:var(--texto);line-height:1.3;margin-bottom:9px}
.card-body p{font-size:.87rem;color:var(--gris);line-height:1.65;flex:1;margin-bottom:18px}
.card-footer{display:flex;align-items:center;justify-content:space-between;padding-top:14px;border-top:1px solid var(--borde)}
.card-meta{font-size:.76rem;color:var(--gris)}
.card-read{font-family:'Sora',sans-serif;font-size:.8rem;font-weight:700;color:var(--azul);display:flex;align-items:center;gap:4px}

/* icon bg colors */
.bg-azul{background:linear-gradient(135deg,#EEF4FF,#D9E8FF)}
.bg-verde{background:linear-gradient(135deg,#EDFBF4,#C6F4DE)}
.bg-naranja{background:linear-gradient(135deg,#FFF4EE,#FFE0CC)}
.bg-cian{background:linear-gradient(135deg,#E0F5FF,#B9E5FF)}
.bg-morado{background:linear-gradient(135deg,#F2F0FF,#E0DAFF)}
.bg-rosa{background:linear-gradient(135deg,#FFF0F5,#FFD6E5)}

/* divider */
.divider{height:1px;background:linear-gradient(90deg,transparent,var(--borde),transparent);margin:16px 0}

/* ── Responsive ─────────────────────────────────────── */
@media(max-width:900px){
  .art-grid{grid-template-columns:1fr;gap:36px}
  .sidebar{position:static}
  .footer-grid{grid-template-columns:1fr 1fr}
  .cta-banner{padding:36px 24px}
  .feat-hero{grid-template-columns:1fr;min-height:auto}
  .feat-hero-visual{height:160px;font-size:5.5rem}
  .feat-hero-content{padding:30px 26px}
}
@media(max-width:640px){
  .nav .nav-link{display:none}
  .art-hero{padding:52px 0 44px}
  .blog-hero{padding:56px 0 50px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:10px;text-align:center}
  .stat-row{grid-template-columns:repeat(2,1fr)}
  .posts-grid{grid-template-columns:1fr}
  .art-layout{padding:36px 0 56px}
  .cta-banner h2{font-size:1.45rem}
}