/* InvertirEn — sistema de diseño v2.0 (polish visual)
   Marca: verde profundo #14532d · dorado #f59e0b · coral #f97316 (solo CTAs)
   Tipografías: Sora (títulos) + Inter (texto) */

:root{
  --green:#14532d;
  --green-dark:#0e3d21;
  --green-soft:#e8f1ea;
  --gold:#f59e0b;
  --gold-soft:#fef4e2;
  --coral:#f97316;
  --coral-dark:#ea6a0a;
  --ink:#1f2937;
  --ink-soft:#6b7280;
  --bg:#faf9f7;
  --white:#ffffff;
  --line:#e7e2d9;
  --radius:12px;
  --radius-lg:16px;
  --radius-xl:20px;
  --shadow:0 2px 10px rgba(20,83,45,.08);
  --shadow-sm:0 1px 3px rgba(20,83,45,.07);
  --shadow-md:0 8px 24px rgba(20,83,45,.11);
  --shadow-lg:0 16px 40px rgba(20,83,45,.15);
  --font-title:'Sora','Plus Jakarta Sans',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  --font-body:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.65;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3{font-family:var(--font-title);color:var(--green);line-height:1.25;margin:0 0 .6em;text-wrap:balance}
h1{font-weight:800;font-size:clamp(1.9rem,6vw,2.9rem);letter-spacing:-.02em}
h2{font-weight:700;font-size:clamp(1.4rem,4.5vw,1.9rem);margin-top:1.8em;letter-spacing:-.01em}
h3{font-weight:700;font-size:1.15rem;margin-top:1.4em}
p{margin:0 0 1em}
a{color:var(--green);text-underline-offset:3px}
a:hover{color:var(--green-dark)}
img,svg{max-width:100%;height:auto}
.container{width:100%;max-width:1080px;margin:0 auto;padding:0 20px}
section{padding:60px 0}
@media(max-width:760px){section{padding:46px 0}}

/* ---------- Iconos SVG ---------- */
.ic{width:24px;height:24px;flex:none}
.ic-inline{width:1.12em;height:1.12em;vertical-align:-.2em;margin-right:.14em}
.card .icon .ic{width:26px;height:26px}
.nav-toggle .ic{width:22px;height:22px;display:block}

/* ---------- Barra de progreso de lectura ---------- */
.read-progress{
  position:fixed;top:0;left:0;right:0;height:3px;z-index:200;
  background:linear-gradient(90deg,var(--gold),var(--coral));
  transform:scaleX(0);transform-origin:0 50%;
}
@media print{.read-progress{display:none}}

/* ---------- Header ---------- */
.site-header{
  background:var(--white);
  border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:50;
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none}
.brand img{height:38px;width:auto}
.nav-toggle{
  display:none;background:none;border:1px solid var(--line);border-radius:10px;
  padding:9px 11px;cursor:pointer;color:var(--green);
  align-items:center;justify-content:center;
}
.nav-toggle:hover{background:var(--green-soft)}
.main-nav ul{display:flex;gap:4px;list-style:none;margin:0;padding:0}
.main-nav a{
  display:block;padding:10px 14px;border-radius:8px;text-decoration:none;
  color:var(--ink);font-weight:600;font-size:.95rem;transition:background .15s ease;
}
.main-nav a:hover{background:var(--green-soft);color:var(--green)}
.main-nav a.active{background:var(--green);color:#fff}
@media(max-width:760px){
  .nav-toggle{display:flex}
  .main-nav{display:none;position:absolute;top:68px;left:0;right:0;background:var(--white);border-bottom:1px solid var(--line);box-shadow:var(--shadow-md)}
  .main-nav.open{display:block}
  .main-nav ul{flex-direction:column;padding:8px}
  .main-nav a{padding:13px 16px;font-size:1rem;border-radius:10px}
  .main-nav a.active{background:var(--green-soft);color:var(--green)}
}

/* ---------- Hero ---------- */
.hero{
  background:
    radial-gradient(900px 420px at 85% -10%, rgba(245,158,11,.20), transparent 60%),
    radial-gradient(720px 400px at 6% 112%, rgba(255,255,255,.08), transparent 55%),
    linear-gradient(180deg,#166534 0%,var(--green) 45%,var(--green-dark) 100%);
  color:#fff;padding:76px 0;position:relative;overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.10) 1.2px,transparent 1.4px);
  background-size:22px 22px;
  -webkit-mask-image:linear-gradient(180deg,transparent,#000 32%,#000 68%,transparent);
  mask-image:linear-gradient(180deg,transparent,#000 32%,#000 68%,transparent);
}
.hero .container{position:relative}
.hero h1{color:#fff;max-width:16ch}
.hero p.lead{font-size:1.16rem;color:#d9e8db;max-width:620px;line-height:1.7}
.hero .cta-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:12px;font-weight:600;font-size:1rem;
  text-decoration:none;border:2px solid transparent;cursor:pointer;
  transition:transform .15s ease,box-shadow .15s ease,background .15s ease;
  box-shadow:0 1px 2px rgba(0,0,0,.08);
}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--coral);color:#fff;box-shadow:0 8px 22px rgba(249,115,22,.38)}
.btn-primary:hover{background:var(--coral-dark);color:#fff;box-shadow:0 12px 28px rgba(249,115,22,.45)}
.btn-ghost{background:rgba(255,255,255,.06);color:#fff;border-color:rgba(255,255,255,.55)}
.btn-ghost:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.12);box-shadow:0 8px 20px rgba(0,0,0,.18)}
.btn-green{background:var(--green);color:#fff;box-shadow:0 6px 16px rgba(20,83,45,.28)}
.btn-green:hover{background:var(--green-dark);color:#fff;box-shadow:0 10px 22px rgba(20,83,45,.34)}

/* ---------- Cards / pilares ---------- */
.grid{display:grid;gap:20px;grid-template-columns:1fr}
@media(min-width:700px){.grid.cols-3{grid-template-columns:repeat(3,1fr)}.grid.cols-2{grid-template-columns:repeat(2,1fr)}}
.card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:28px;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#d9d3c3}
.card .icon{
  width:52px;height:52px;border-radius:14px;color:var(--green);
  background:linear-gradient(135deg,var(--green-soft) 0%,#d9e9dd 100%);
  border:1px solid rgba(20,83,45,.10);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.card h3{margin:0 0 .4em}
.card p{color:var(--ink-soft);font-size:.97rem;flex:1}
.card .card-link{font-weight:600;margin-top:12px;text-decoration:none}
.card .card-link:hover{text-decoration:underline}
.card time{font-size:.82rem;color:var(--ink-soft)}
.card-featured{border:1px solid rgba(245,158,11,.45);background:linear-gradient(180deg,#fffdf7,var(--white))}

/* ---------- Ad slots (placeholders AdSense) ---------- */
.ad-slot{
  border:2px dashed #cfc8b8;border-radius:var(--radius-lg);background:#f7f4ec;
  color:#a39c8c;font-size:.85rem;text-align:center;padding:26px 16px;margin:38px 0;
}
.ad-slot::before{content:"ANUNCIO";display:block;font-size:.7rem;letter-spacing:.25em;margin-bottom:6px;color:#b7ae9c}

/* ---------- Calculadoras ---------- */
.calc{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);padding:30px;margin:0 0 44px;
}
.calc h2{margin-top:0}
.field{margin-bottom:16px}
.field label{display:block;font-weight:600;font-size:.93rem;margin-bottom:6px}
.field input{
  width:100%;padding:12px 14px;border:1.5px solid var(--line);border-radius:10px;
  font-size:1rem;font-family:var(--font-body);transition:border-color .15s ease,box-shadow .15s ease;
}
.field input:focus{outline:none;border-color:var(--green);box-shadow:0 0 0 3px var(--green-soft)}
.field .hint{font-size:.83rem;color:var(--ink-soft);margin-top:4px}
.calc-results{
  background:var(--green-soft);border-radius:12px;padding:22px;margin-top:20px;
  display:grid;gap:12px;
}
.result-big{font-family:var(--font-title);font-size:2rem;font-weight:800;color:var(--green);letter-spacing:-.01em}
.result-row{display:flex;justify-content:space-between;gap:12px;font-size:.95rem}
.result-row strong{color:var(--green)}
.calc table{width:100%;border-collapse:collapse;margin-top:18px;font-size:.88rem}
.calc th,.calc td{padding:10px 10px;text-align:right;border-bottom:1px solid var(--line)}
.calc th:first-child,.calc td:first-child{text-align:left}
.calc th{background:var(--green-soft);color:var(--green);font-weight:600}
.calc tbody tr:nth-child(even){background:#f8f6f1}
.calc-error{color:#b42318;font-size:.9rem;margin-top:10px;min-height:1.2em}
.explain{background:var(--gold-soft);border-left:4px solid var(--gold);border-radius:0 12px 12px 0;padding:18px 20px;margin-top:24px;font-size:.94rem;box-shadow:var(--shadow-sm)}
.verdict-box{border:2px solid var(--green);border-radius:var(--radius-lg);padding:20px;margin-top:20px;background:#fff;box-shadow:var(--shadow-sm)}

/* ---------- Artículos ---------- */
.article{max-width:70ch;margin:0 auto}
.article-meta{display:flex;gap:14px;align-items:center;color:var(--ink-soft);font-size:.9rem;margin:12px 0 28px;flex-wrap:wrap}
.article-meta .author{font-weight:600;color:var(--green)}
.article h2{padding-bottom:.4em;border-bottom:2px solid var(--green-soft);margin-top:2em}
.article figure{margin:0 0 1.5em}
.article ul,.article ol{padding-left:1.4em;margin:0 0 1em}
.article li{margin-bottom:.45em}
.article table{width:100%;border-collapse:collapse;margin:1.4em 0;font-size:.93rem;display:block;overflow-x:auto;box-shadow:var(--shadow-sm);border-radius:10px}
.article th,.article td{padding:11px 13px;border:1px solid var(--line);text-align:left}
.article th{background:var(--green);color:#fff;font-weight:600;white-space:nowrap}
.article tbody tr:nth-child(even){background:#f8f6f1}
.article blockquote{
  border-left:4px solid var(--gold);background:var(--gold-soft);margin:1.6em 0;
  padding:18px 22px;border-radius:0 12px 12px 0;font-size:.97rem;box-shadow:var(--shadow-sm);
}
.faq details{background:var(--white);border:1px solid var(--line);border-radius:12px;margin-bottom:10px;padding:0;overflow:hidden;transition:box-shadow .15s ease}
.faq details[open]{box-shadow:var(--shadow-sm)}
.faq summary{
  font-weight:600;cursor:pointer;color:var(--green);padding:15px 18px;
  list-style:none;display:flex;align-items:center;gap:12px;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{
  content:"+";flex:none;width:26px;height:26px;border-radius:50%;
  background:var(--green-soft);color:var(--green);
  display:inline-flex;align-items:center;justify-content:center;
  font-weight:700;font-size:1.05rem;line-height:1;transition:transform .18s ease,background .18s ease;
}
.faq details[open] summary::before{content:"\2212";background:var(--green);color:#fff}
.faq details>div,.faq details>p{padding:0 18px 16px 56px;color:var(--ink-soft);font-size:.95rem}
.disclaimer-box{
  background:#f4f1ea;border:1px solid var(--line);border-left:4px solid #cfc8b8;border-radius:10px;
  padding:18px 20px;font-size:.86rem;color:var(--ink-soft);margin-top:40px;box-shadow:var(--shadow-sm);
}
.toc{
  background:var(--white);border:1px solid var(--line);border-left:4px solid var(--green);
  border-radius:12px;padding:20px 24px;margin:0 0 30px;box-shadow:var(--shadow-sm);
}
.toc strong{display:block;margin-bottom:10px;color:var(--green);font-family:var(--font-title);font-size:.85rem;letter-spacing:.07em;text-transform:uppercase}
.toc ol{margin:0;padding-left:1.3em}
.toc li{margin-bottom:6px}
.toc a{text-decoration:none}
.toc a:hover{text-decoration:underline}

/* ---------- Sobre mí / contacto / legal ---------- */
.profile{display:flex;gap:26px;align-items:flex-start;flex-wrap:wrap}
.profile img{width:150px;height:150px;border-radius:50%;object-fit:cover;border:4px solid var(--green-soft);box-shadow:var(--shadow-sm)}
.legal h2{font-size:1.3rem}
.contact-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:32px;max-width:560px}

/* ---------- Footer ---------- */
.site-footer{background:linear-gradient(180deg,var(--green-dark) 0%,#0a2f18 100%);color:#cfdccf;padding:52px 0 28px;margin-top:24px}
.site-footer a{color:#fff;text-decoration:none}
.site-footer a:hover{color:var(--gold-soft);text-decoration:underline}
.footer-grid{display:grid;gap:28px;grid-template-columns:1fr}
@media(min-width:700px){.footer-grid{grid-template-columns:2fr 1fr 1fr}}
.site-footer h4{color:var(--gold);font-family:var(--font-title);margin:0 0 14px;font-size:.95rem;letter-spacing:.05em;text-transform:uppercase}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li{margin-bottom:9px;font-size:.93rem}
.footer-bottom{border-top:1px solid rgba(255,255,255,.15);margin-top:32px;padding-top:20px;font-size:.82rem;color:#a9bda9}
.footer-disclaimer{font-size:.8rem;color:#a9bda9;margin-top:16px;max-width:900px;line-height:1.7}

/* ---------- Newsletter ---------- */
.newsletter-box{
  background:linear-gradient(135deg,#166534 0%,var(--green) 45%,var(--green-dark) 100%);
  border:none;border-radius:var(--radius-xl);padding:38px 30px;margin:42px 0;text-align:center;color:#fff;
  box-shadow:var(--shadow-md);position:relative;overflow:hidden;
}
.newsletter-box::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.09) 1.2px,transparent 1.4px);
  background-size:20px 20px;
}
.newsletter-box>*{position:relative}
.newsletter-box h3{color:#fff;font-size:1.35rem;margin:0 0 10px;letter-spacing:-.01em}
.newsletter-box p{color:#dcebe0;margin:0 auto 22px;max-width:52ch}
.newsletter-box .btn-green{
  background:#fff;color:var(--green);border-color:#fff;
  box-shadow:0 10px 24px rgba(0,0,0,.28);font-size:1.05rem;padding:15px 32px;
}
.newsletter-box .btn-green:hover{background:var(--gold-soft);color:var(--green-dark);border-color:var(--gold-soft);transform:translateY(-2px)}
.newsletter-band{
  background:linear-gradient(135deg,var(--green) 0%,var(--green-dark) 100%);
  color:#fff;position:relative;overflow:hidden;
}
.newsletter-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.08) 1.2px,transparent 1.4px);
  background-size:22px 22px;
}
.newsletter-band .container{position:relative}
.newsletter-band h2{color:#fff}
.newsletter-band .lead{color:#d9e8db}
.newsletter-band .kicker{background:rgba(255,255,255,.16);color:#fff;border:1px solid rgba(255,255,255,.25)}
.newsletter-band .btn-primary{box-shadow:0 10px 26px rgba(0,0,0,.30)}

/* ---------- Utilidades ---------- */
.lead{font-size:1.12rem;color:var(--ink-soft);line-height:1.7}
.section-title{text-align:center;max-width:660px;margin:0 auto 44px}
.section-title .lead{margin-bottom:0}
.kicker{
  display:inline-block;background:var(--gold-soft);color:#8a5a00;font-weight:600;
  font-size:.78rem;letter-spacing:.09em;text-transform:uppercase;
  padding:7px 15px;border-radius:999px;margin-bottom:14px;
  border:1px solid rgba(245,158,11,.35);box-shadow:0 1px 2px rgba(138,90,0,.07);
}
.skip-link{position:absolute;left:-9999px}
.skip-link:focus{left:10px;top:10px;background:#fff;padding:10px;z-index:100}
[hidden]{display:none!important}