/* Interactivo AI — institucional, sobrio, tipografía grande */
:root{
  --bg:#0b1220;
  --bg-alt:#0e1728;
  --surface:#131f36;
  --line:#22304d;
  --ink:#eaf0fb;
  --muted:#a7b4cc;
  --accent:#4f8cff;
  --accent-2:#7c5cff;
  --ok:#2fbf71;
  --err:#ff6b6b;
  --radius:14px;
  --maxw:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  font-size:19px;               /* base grande, pedido explícito */
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.container-narrow{max-width:820px}
h1,h2,h3{line-height:1.15;margin:0 0 .5em;font-weight:800;letter-spacing:-.02em}
h1{font-size:clamp(2.5rem,5.5vw,4.1rem)}
h2{font-size:clamp(1.9rem,3.6vw,2.8rem)}
h3{font-size:clamp(1.25rem,2vw,1.55rem);font-weight:700}
p{margin:0 0 1em}
a{color:var(--accent);text-decoration:none}

/* Header */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(11,18,32,.85);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:28px;height:76px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink)}
.brand-mark{color:var(--accent);font-size:1.3rem}
.brand-name{font-weight:800;font-size:1.35rem;letter-spacing:-.02em}
.brand-name em{font-style:normal;color:var(--accent)}
.main-nav{display:flex;gap:26px;margin-left:auto}
.main-nav a{color:var(--muted);font-weight:600;font-size:1rem;transition:color .15s}
.main-nav a:hover{color:var(--ink)}
.lang-toggle{display:flex;align-items:center;gap:8px;color:var(--line);margin-left:8px}
.lang-toggle button{
  background:none;border:none;cursor:pointer;padding:6px 8px;border-radius:8px;
  color:var(--muted);font:inherit;font-weight:700;font-size:.95rem;
}
.lang-toggle button.active{color:#fff;background:var(--surface);outline:1px solid var(--line)}
.nav-burger{display:none;background:none;border:1px solid var(--line);border-radius:10px;color:var(--ink);font-size:1.3rem;padding:4px 12px;cursor:pointer}

/* Hero */
.hero{
  padding:110px 0 90px;text-align:left;
  background:
    radial-gradient(900px 420px at 85% -10%, rgba(79,140,255,.22), transparent 60%),
    radial-gradient(700px 380px at -10% 30%, rgba(124,92,255,.14), transparent 60%);
}
.eyebrow{
  text-transform:uppercase;letter-spacing:.14em;font-size:.85rem;font-weight:700;
  color:var(--accent);margin-bottom:14px;
}
.hero .lead{font-size:clamp(1.15rem,1.9vw,1.45rem);color:var(--muted);max-width:46em;margin-bottom:2em}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}

/* Botones */
.btn{
  display:inline-block;padding:15px 30px;border-radius:12px;font-weight:700;font-size:1.05rem;
  transition:transform .12s, box-shadow .12s, background .15s;border:1px solid transparent;cursor:pointer;
}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:linear-gradient(120deg,var(--accent),var(--accent-2));color:#fff;box-shadow:0 8px 28px rgba(79,140,255,.35)}
.btn-ghost{border-color:var(--line);color:var(--ink);background:transparent}
.btn-secondary{background:var(--bg);border-color:var(--line);color:var(--ink);font-size:1rem;padding:13px 24px}
.btn-lg{width:100%;padding:18px;font-size:1.15rem}
.btn[disabled]{opacity:.6;cursor:wait;transform:none}

/* Secciones */
.section{padding:96px 0}
.section-alt{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-lead{color:var(--muted);font-size:1.15rem;max-width:50em;margin-bottom:2.2em}

/* Cards productos */
.cards{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin-top:44px}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:38px 34px;display:flex;flex-direction:column;gap:6px;
}
.card-tag{
  align-self:flex-start;font-size:.82rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;
  color:var(--accent);background:rgba(79,140,255,.12);padding:6px 12px;border-radius:999px;margin-bottom:14px;
}
.card p{color:var(--muted)}
.feature-list{list-style:none;padding:0;margin:10px 0 26px;display:flex;flex-direction:column;gap:12px}
.feature-list li{padding-left:32px;position:relative;color:var(--ink);font-size:1.02rem}
.feature-list li::before{
  content:"✓";position:absolute;left:0;top:0;color:var(--ok);font-weight:800;
}
.card .btn{margin-top:auto;align-self:flex-start}

/* Valores */
.values{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;margin-top:20px}
.value{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:28px 26px}
.value h3{font-size:1.15rem;margin-bottom:.6em}
.value p{color:var(--muted);font-size:1rem;margin:0}

/* Formulario */
form{margin-top:10px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.field{display:flex;flex-direction:column;gap:8px}
.field-full{grid-column:1 / -1}
label{font-weight:600;font-size:1rem}
input,select,textarea{
  background:var(--surface);border:1px solid var(--line);border-radius:10px;color:var(--ink);
  padding:14px 16px;font:inherit;font-size:1.05rem;width:100%;
}
input:focus,select:focus,textarea:focus{outline:2px solid var(--accent);border-color:transparent}
.field.invalid input,.field.invalid select,.field.invalid textarea{border-color:var(--err)}
textarea{resize:vertical;min-height:130px}
#form-submit{margin-top:26px}
.form-error{color:var(--err);font-weight:600;margin:18px 0 0}
.form-success{
  margin-top:26px;background:rgba(47,191,113,.1);border:1px solid rgba(47,191,113,.4);
  border-radius:var(--radius);padding:30px;text-align:center;font-size:1.2rem;
}
.success-icon{
  width:56px;height:56px;margin:0 auto 14px;border-radius:50%;background:var(--ok);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:1.7rem;font-weight:800;
}
.form-success p{margin:0}

/* Footer */
.site-footer{border-top:1px solid var(--line);padding:34px 0;color:var(--muted);font-size:1rem}
.footer-inner{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}

/* Responsive */
@media (max-width:900px){
  .cards,.form-grid{grid-template-columns:1fr}
  .values{grid-template-columns:1fr 1fr}
  .hero{padding:80px 0 64px}
  .section{padding:70px 0}
}
@media (max-width:640px){
  body{font-size:18px}
  .values{grid-template-columns:1fr}
  .main-nav{
    display:none;position:absolute;top:76px;left:0;right:0;flex-direction:column;gap:0;
    background:var(--bg);border-bottom:1px solid var(--line);padding:10px 24px 18px;
  }
  .main-nav.open{display:flex}
  .main-nav a{padding:14px 0;font-size:1.15rem;border-bottom:1px solid var(--line)}
  .main-nav a:last-child{border-bottom:none}
  .nav-burger{display:block;margin-left:auto}
  .lang-toggle{margin-left:0}
  .header-inner{gap:14px}
}