/* ============ PROPUESTA A · "TECH DARK" ============
     Sin cookies · Sin fuentes externas · Sin analítica
     Tipografía de sistema por cumplimiento RGPD (evita
     la carga de Google Fonts y la cesión de IP a terceros)
  ==================================================== */
  :root{
    --bg:#0a1220;
    --bg-2:#0e1a2e;
    --panel:rgba(255,255,255,.04);
    --panel-b:rgba(255,255,255,.09);
    --text:#e8eef7;
    --muted:#93a3ba;
    --accent:#2dd4bf;      /* teal — evolución del azul petróleo actual */
    --accent-2:#60a5fa;
    --mono:ui-monospace,'SF Mono','Cascadia Code',Consolas,monospace;
    --sans:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;
  }
  *{margin:0;padding:0;box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    background:var(--bg);color:var(--text);font-family:var(--sans);
    line-height:1.6;-webkit-font-smoothing:antialiased;
  }
  /* idioma: se oculta el bloque del idioma que no está activo.
     Se usa !important y alta especificidad para que ninguna regla
     posterior (p. ej. .t-item ul{display:grid}) lo pise. */
  body[data-lang="es"] .en,
  body[data-lang="en"] .es{display:none !important}

  /* fondo con malla sutil */
  .mesh{
    position:fixed;inset:0;z-index:-1;
    background:
      radial-gradient(60rem 40rem at 85% -10%,rgba(45,212,191,.12),transparent 60%),
      radial-gradient(50rem 35rem at -10% 110%,rgba(96,165,250,.10),transparent 60%),
      var(--bg);
  }
  .grid-lines{
    position:fixed;inset:0;z-index:-1;opacity:.35;
    background-image:
      linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),
      linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);
    background-size:56px 56px;
    mask-image:radial-gradient(80rem 50rem at 50% 0,#000 30%,transparent 75%);
    -webkit-mask-image:radial-gradient(80rem 50rem at 50% 0,#000 30%,transparent 75%);
  }

  .wrap{max-width:1060px;margin:0 auto;padding:0 24px}

  /* ---------- nav ---------- */
  header{
    position:sticky;top:0;z-index:50;
    backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
    background:rgba(10,18,32,.72);border-bottom:1px solid var(--panel-b);
  }
  .nav{display:flex;align-items:center;justify-content:space-between;height:64px}
  .brand{font-family:var(--mono);font-size:.95rem;letter-spacing:.06em;color:var(--text);text-decoration:none}
  .brand b{color:var(--accent)}
  .nav-links{display:flex;gap:26px;align-items:center;list-style:none}
  .nav-links a{color:var(--muted);text-decoration:none;font-size:.9rem;transition:color .2s}
  .nav-links a:hover{color:var(--accent)}
  .lang-btn{
    font-family:var(--mono);font-size:.78rem;cursor:pointer;
    background:var(--panel);border:1px solid var(--panel-b);color:var(--text);
    border-radius:999px;padding:6px 14px;transition:border-color .2s;
  }
  .lang-btn:hover{border-color:var(--accent)}
  @media(max-width:640px){.nav-links{gap:16px}.nav-links li.hide-m{display:none}}

  /* ---------- hero ---------- */
  .hero{padding:110px 0 90px}
  .kicker{
    font-family:var(--mono);color:var(--accent);font-size:.85rem;
    letter-spacing:.12em;text-transform:uppercase;margin-bottom:18px;display:block;
  }
  h1{font-size:clamp(2.4rem,6vw,4rem);line-height:1.06;letter-spacing:-.02em;font-weight:800}
  h1 .grad{
    background:linear-gradient(92deg,var(--accent),var(--accent-2));
    -webkit-background-clip:text;background-clip:text;color:transparent;
  }
  .lede{color:var(--muted);max-width:640px;font-size:1.12rem;margin-top:22px}
  .cta-row{display:flex;gap:14px;margin-top:36px;flex-wrap:wrap}
  .btn{
    display:inline-flex;align-items:center;gap:8px;text-decoration:none;
    padding:12px 22px;border-radius:10px;font-size:.95rem;font-weight:600;transition:transform .15s,box-shadow .15s;
  }
  .btn-primary{background:linear-gradient(92deg,var(--accent),#14b8a6);color:#04211c}
  .btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(45,212,191,.25)}
  .btn-ghost{border:1px solid var(--panel-b);color:var(--text);background:var(--panel)}
  .btn-ghost:hover{border-color:var(--accent);transform:translateY(-2px)}

  /* stats del hero */
  .stats{
    display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:1px;
    background:var(--panel-b);border:1px solid var(--panel-b);border-radius:14px;
    overflow:hidden;margin-top:64px;
  }
  .stat{background:var(--bg-2);padding:22px 24px}
  .stat .n{
    font-family:var(--mono);font-size:1.9rem;font-weight:700;
    background:linear-gradient(92deg,var(--accent),var(--accent-2));
    -webkit-background-clip:text;background-clip:text;color:transparent;
  }
  .stat .d{color:var(--muted);font-size:.82rem;margin-top:4px}

  /* ---------- secciones ---------- */
  section{padding:72px 0}
  .sec-title{display:flex;align-items:baseline;gap:14px;margin-bottom:34px}
  .sec-title h2{font-size:1.6rem;letter-spacing:-.01em}
  .sec-title .idx{font-family:var(--mono);color:var(--accent);font-size:.9rem}
  .sec-title .rule{flex:1;height:1px;background:var(--panel-b)}

  .cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px}
  .card{
    background:var(--panel);border:1px solid var(--panel-b);border-radius:14px;
    padding:26px;transition:transform .2s,border-color .2s;
  }
  .card:hover{transform:translateY(-4px);border-color:rgba(45,212,191,.4)}
  .card h3{font-size:1.05rem;margin-bottom:10px}
  .card p{color:var(--muted);font-size:.93rem}
  .card .ico{
    width:38px;height:38px;border-radius:9px;display:grid;place-items:center;margin-bottom:16px;
    background:rgba(45,212,191,.12);color:var(--accent);
  }

  /* timeline */
  .timeline{border-left:1px solid var(--panel-b);padding-left:28px;display:grid;gap:30px}
  .t-item{position:relative}
  .t-item::before{
    content:"";position:absolute;left:-33px;top:6px;width:9px;height:9px;border-radius:50%;
    background:var(--accent);box-shadow:0 0 0 4px rgba(45,212,191,.15);
  }
  .t-item .when{font-family:var(--mono);font-size:.78rem;color:var(--accent)}
  .t-item h3{font-size:1.02rem;margin:4px 0}
  .t-item .where{font-size:.82rem;color:var(--muted);font-style:italic}
  .t-item p{color:var(--muted);font-size:.92rem}
  .t-item ul{margin-top:10px;padding-left:18px;display:grid;gap:7px}
  .t-item li{color:var(--muted);font-size:.9rem}
  .t-item li::marker{color:var(--accent)}

  .prose{color:var(--muted);max-width:620px;margin-bottom:34px}
  .skills{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:32px}
  .skill-group h3{
    font-family:var(--mono);font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;
    color:var(--accent);margin-bottom:14px;
  }
  .chips{display:flex;flex-wrap:wrap;gap:10px}
  .chip{
    font-family:var(--mono);font-size:.8rem;color:var(--text);
    background:var(--panel);border:1px solid var(--panel-b);border-radius:999px;padding:7px 15px;
  }

  /* placeholder pendiente de datos reales */
  .todo{
    border:1px dashed rgba(255,196,0,.45);background:rgba(255,196,0,.06);
    border-radius:10px;padding:14px 16px;color:#ffd666;font-size:.85rem;font-family:var(--mono);
  }

  /* contacto */
  .contact-box{
    background:linear-gradient(180deg,rgba(45,212,191,.08),transparent);
    border:1px solid var(--panel-b);border-radius:18px;padding:48px;text-align:center;
  }
  .contact-box h2{font-size:1.8rem;margin-bottom:12px}
  .contact-box p{color:var(--muted);max-width:520px;margin:0 auto 28px}
  .mail{font-family:var(--mono);font-size:1.02rem}

  /* footer */
  footer{border-top:1px solid var(--panel-b);padding:34px 0;color:var(--muted);font-size:.85rem}
  .foot{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;align-items:center}
  .foot nav{display:flex;gap:20px;flex-wrap:wrap}
  .foot a{color:var(--muted);text-decoration:none}
  .foot a:hover{color:var(--accent)}
  .no-cookies{
    display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:.75rem;
    color:var(--accent);border:1px solid rgba(45,212,191,.3);border-radius:999px;padding:5px 12px;
  }
  /* ---------- páginas legales ---------- */
  .legal{max-width:760px;margin:0 auto;padding:80px 24px}
  .legal h1{font-size:1.9rem;margin-bottom:8px}
  .legal .updated{font-family:var(--mono);font-size:.78rem;color:var(--muted);margin-bottom:34px;display:block}
  .legal h2{font-size:1.15rem;margin:32px 0 10px;color:var(--accent)}
  .legal p,.legal li{color:var(--muted);font-size:.95rem;margin-bottom:12px}
  .legal ul{padding-left:22px}
  .back{display:inline-block;margin-bottom:30px;color:var(--accent);text-decoration:none;font-family:var(--mono);font-size:.85rem}

  /* skip link accesible */
  .skip{
    position:absolute;left:-9999px;top:0;z-index:100;
    background:var(--accent);color:#04211c;padding:10px 18px;border-radius:0 0 8px 0;
    font-weight:600;text-decoration:none;
  }
  .skip:focus{left:0}
  /* foco visible en todo el sitio */
  a:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
  /* respeta "reducir movimiento" del sistema */
  @media(prefers-reduced-motion:reduce){
    html{scroll-behavior:auto}
    *{transition:none !important}
  }

  .foot-badge{margin-top:8px}
  .nf{text-align:center;padding-top:130px}
  .nf h1{font-size:4.5rem;margin-bottom:6px;letter-spacing:-.03em}
  .nf-t{font-size:1.1rem}
  .nf-a{margin-top:30px}