/* ============================================================
   Arketria — FARPAY SOFOM ENR · Sitio publicitario
   Design system (marca Arketria). Self-hosted; sin Google Fonts.
   ============================================================ */

/* ---- Fuentes self-hosted (woff2 en /fonts) ---- */
@font-face{font-family:"Montserrat";font-weight:600;font-style:normal;font-display:swap;src:url("../fonts/montserrat-600.woff2") format("woff2");}
@font-face{font-family:"Montserrat";font-weight:300;font-style:normal;font-display:swap;src:url("../fonts/montserrat-300.woff2") format("woff2");}
@font-face{font-family:"Inter";font-weight:400;font-style:normal;font-display:swap;src:url("../fonts/inter-400.woff2") format("woff2");}
@font-face{font-family:"Inter";font-weight:600;font-style:normal;font-display:swap;src:url("../fonts/inter-600.woff2") format("woff2");}

/* ---- Tokens de marca ---- */
:root{
  --navy:#2C3E50;      /* Core Navy */
  --slate:#607D8B;     /* Slate Blue */
  --cyan:#00C8FF;      /* Electric Cyan (acento) */
  --neutral:#F0F0F0;   /* Neutral */
  --ink:#1b2733;       /* texto principal */
  --muted:#5c6b78;     /* texto secundario */
  --paper:#ffffff;
  --line:#d9e0e6;
  --ok:#1a7f5a;
  --warn:#b4531a;
  --sans:"Inter",system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  --display:"Montserrat",var(--sans);
  --maxw:1140px;
  --radius:10px;
  --shadow:0 2px 10px rgba(27,39,51,.08);
}

*{box-sizing:border-box}
html{font-size:100%;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--sans);font-weight:400;color:var(--ink);background:var(--paper);line-height:1.6}
img{max-width:100%;height:auto}
a{color:var(--navy);text-decoration:none}
a:hover{text-decoration:underline}
:focus-visible{outline:3px solid var(--cyan);outline-offset:2px}

h1,h2,h3,h4{font-family:var(--display);font-weight:600;color:var(--navy);line-height:1.2;margin:0 0 .5em}
.sub{font-family:var(--display);font-weight:300;color:var(--slate)}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}
section{padding:56px 0;border-bottom:1px solid var(--line)}
section h2{font-size:1.6rem;margin-bottom:.2em}
section .lead{color:var(--muted);max-width:70ch;margin:0 0 1.6em}

/* ---- Header / nav ---- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:saturate(1.2) blur(6px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 20px;max-width:var(--maxw);margin:0 auto;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:12px;font-family:var(--display);font-weight:600;color:var(--navy);font-size:1.15rem;line-height:1}
.brand img{height:40px;width:auto;flex:0 0 auto}
.brand>span{display:flex;flex-direction:column;justify-content:center}
.brand small{display:block;font-weight:300;font-size:.6rem;letter-spacing:.13em;color:var(--slate);text-transform:uppercase;white-space:nowrap;margin-top:3px}
.nav ul{display:flex;gap:20px;list-style:none;margin:0;padding:0;flex-wrap:wrap}
.nav a{color:var(--ink);font-weight:500;font-size:.95rem}
.nav-toggle{display:none;background:none;border:1px solid var(--line);border-radius:8px;padding:8px 10px;font-size:1rem;cursor:pointer}

/* ---- Hero ---- */
.hero{background:linear-gradient(135deg,var(--navy),#22303d);color:#fff}
.hero h1{color:#fff;font-size:2.3rem}
.hero .sub{color:#c6d3dc}
.hero p{color:#dbe4ea;max-width:60ch}
.hero .cta{margin-top:22px;display:flex;gap:12px;flex-wrap:wrap}

/* ---- Botones ---- */
.btn{display:inline-block;font-family:var(--display);font-weight:600;font-size:.95rem;padding:11px 20px;border-radius:8px;border:2px solid transparent;cursor:pointer;transition:.15s}
.btn-primary{background:var(--navy);color:#fff;border-color:var(--navy)}          /* Primary (spec) */
.btn-primary:hover{background:#22303d;text-decoration:none}
.btn-secondary{background:var(--slate);color:#fff;border-color:var(--slate)}      /* Secondary (spec) */
.btn-secondary:hover{background:#4e6875;text-decoration:none}
.btn-accent{background:var(--cyan);color:#06222c;border-color:var(--cyan)}        /* acento cyan (CTA sobre fondo oscuro) */
.btn-accent:hover{background:#33d4ff;text-decoration:none}
.btn-ghost{background:var(--neutral);color:var(--navy);border-color:var(--line)}  /* Normal (spec) */
.btn-ghost:hover{background:#e6ebef;text-decoration:none}

/* ---- Cards de producto ---- */
.grid{display:grid;gap:20px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px;display:flex;flex-direction:column}
.card h3{color:var(--navy);font-size:1.2rem}
.card .tag{display:inline-block;font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--slate);font-weight:600;margin-bottom:8px}
/* Listas con viñeta rombo (◆) — spec PROPUESTA 1 */
section ul{list-style:none;padding-left:2px;margin:.4em 0 1em}
section ul li{position:relative;padding-left:22px;margin:.25em 0}
section ul li::before{content:"\25C6";position:absolute;left:0;top:0;color:var(--cyan);font-size:.82em;line-height:1.7}
.card ul{color:var(--muted)}
.card .btn{margin-top:auto}

/* ---- CAT: negro, grande, resaltado (Art. 30-IV) ---- */
.cat-box{border:2px solid var(--navy);border-radius:var(--radius);padding:16px 18px;margin:16px 0;background:#fafcfd}
.cat-box .cat-value{font-family:var(--display);font-weight:600;color:#000;font-size:2.4rem;line-height:1}
.cat-box .cat-label{font-weight:600;color:#000}
.cat-box .cat-note{font-size:.8rem;color:var(--muted);margin-top:6px}

/* ---- Tablas ---- */
.scroll-x{overflow-x:auto}
table.data{width:100%;border-collapse:collapse;font-size:.92rem;margin:12px 0}
table.data th{background:var(--navy);color:#fff;text-align:left;padding:9px 12px;font-weight:600}
table.data td{padding:9px 12px;border:1px solid var(--line);vertical-align:top}
table.data tr:nth-child(even) td{background:#f7f9fb}

/* ---- Avisos / leyendas (alto contraste ≥7:1) ---- */
.aviso{background:#fff;border:2px solid var(--navy);border-radius:var(--radius);padding:16px 18px;margin:14px 0;color:#0f1a24}
.aviso h3{margin-top:0}
.leyenda{background:var(--navy);color:#fff;border-radius:var(--radius);padding:14px 16px;font-size:.95rem}
.leyenda strong{color:#fff}
.warn-legend{background:#fff5ee;border-left:4px solid var(--warn);padding:10px 14px;margin:8px 0;color:#3a2415;font-size:.9rem}

/* ---- Buró ---- */
.buro{display:grid;grid-template-columns:180px 1fr;gap:20px;align-items:start}
.buro .logo{border:1px solid var(--line);border-radius:8px;padding:14px;text-align:center;color:var(--muted);font-size:.8rem}

/* ---- Muestra / placeholder ---- */
.sample{background:#fffbe6;border:1px dashed #c9a227;color:#6b5310;font-size:.8rem;padding:3px 8px;border-radius:6px;display:inline-block;font-weight:600}

/* ---- Footer ---- */
.site-footer{background:var(--navy);color:#cdd8e0;padding:40px 0 28px;border:0}
.site-footer a{color:#fff}
.site-footer h4{color:#fff;font-size:1rem}
.footer-cols{display:grid;grid-template-columns:2fr 1fr 1fr;gap:28px}
.footer-legend{margin-top:26px;padding-top:18px;border-top:1px solid #3a4b59;font-size:.82rem;color:#aebac6;line-height:1.6}

/* ---- Liga fija Art. 29 (inferior derecha) ---- */
.art29-fixed{position:fixed;right:16px;bottom:16px;z-index:60;background:var(--navy);color:#fff;font-family:var(--display);font-weight:600;font-size:.82rem;padding:10px 14px;border-radius:24px;box-shadow:0 4px 14px rgba(0,0,0,.25);max-width:260px;line-height:1.25}
.art29-fixed:hover{background:#22303d;text-decoration:none}

/* ---- Chart ilustrativo ---- */
.chart-wrap{background:#fafcfd;border:1px solid var(--line);border-radius:var(--radius);padding:16px}
.chart-wrap .ct-series-a .ct-bar{stroke:var(--navy)}
.chart-wrap .ct-series-b .ct-bar{stroke:var(--slate)}
.chart-note{font-size:.78rem;color:var(--muted);margin-top:8px}

/* ---- Responsive ---- */
@media (max-width:900px){
  .grid-3{grid-template-columns:1fr 1fr}
  .footer-cols{grid-template-columns:1fr 1fr}
  .buro{grid-template-columns:1fr}
}
@media (max-width:700px){
  .nav ul{display:none;flex-basis:100%;order:3;flex-direction:column;gap:0;margin-top:10px;border-top:1px solid var(--line)}
  .nav ul.open{display:flex}
  .nav ul li{border-bottom:1px solid var(--line)}
  .nav ul a{display:block;padding:13px 4px;font-size:1rem}
  .nav-toggle{display:inline-block}
  .grid-3{grid-template-columns:1fr}
  .footer-cols{grid-template-columns:1fr}
  .hero h1{font-size:1.8rem}
  .art29-fixed{left:12px;right:12px;bottom:12px;max-width:none;text-align:center}
}