/* Web de consultorIA. Identidad propia, distinta de la plantilla de cliente. */

*, *::before, *::after { box-sizing: border-box; }

:root {
  --acento: #1f5eff;
  --marca-1: #0a1a40;      /* azul del logotipo */
  --marca-2: #073a5c;
  --marca-brillo: #22d3ee;
  --tinta: #0d1117;
  --tinta-suave: #5a6478;
  --fondo: #ffffff;
  --fondo-alt: #f5f7fa;
  --linea: #e2e6ed;
  --radio: 14px;
  --ancho: 1120px;
  --fuente: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --sombra: 0 1px 2px rgba(13,17,23,.04), 0 10px 30px rgba(13,17,23,.07);
}

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

body { margin: 0; font-family: var(--fuente); color: var(--tinta);
       background: var(--fondo); line-height: 1.62; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--acento); }

.contenedor { width: min(100% - 40px, var(--ancho)); margin-inline: auto; }
.estrecho { max-width: 720px; }
.centro { text-align: center; }

.saltar { position: absolute; left: -9999px; background: var(--acento); color: #fff; padding: 12px 18px; z-index: 100; }
.saltar:focus { left: 0; top: 0; }

/* ── Cabecera (oscura, a juego con el logotipo) ─────────────── */
.cabecera { position: sticky; top: 0; z-index: 50;
            background: rgba(10,26,64,.94); backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255,255,255,.10); }
.cabecera__fila { display: flex; align-items: center; justify-content: space-between; min-height: 74px; gap: 16px; }
.logo { display: block; line-height: 0; }
.logo img { width: 210px; height: auto; border-radius: 4px; }

.nav { display: flex; align-items: center; gap: 28px; }
.nav a { text-decoration: none; color: rgba(255,255,255,.82); font-size: 15px; font-weight: 500; }
.nav a:hover { color: var(--marca-brillo); }

.menu-btn { display: none; flex-direction: column; gap: 5px; background: none; border: 0; padding: 10px; cursor: pointer; }
.menu-btn span { width: 24px; height: 2px; background: #fff; border-radius: 2px; transition: transform .2s, opacity .2s; }
.menu-btn[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-btn[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-btn[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
@media (max-width: 900px) {
  .menu-btn { display: flex; }
  .logo img { width: 165px; }
  .nav { position: absolute; inset: 74px 0 auto; flex-direction: column; align-items: stretch;
         gap: 0; background: var(--marca-1); border-bottom: 1px solid rgba(255,255,255,.12);
         padding: 8px 20px 20px; display: none; }
  .nav.abierto { display: flex; }
  .nav a { padding: 13px 0; border-bottom: 1px solid rgba(255,255,255,.10); }
  .nav .btn { margin-top: 14px; text-align: center; border-bottom: 0; }
}

/* ── Botones ────────────────────────────────────────────────── */
.btn { display: inline-block; padding: 14px 28px; border-radius: 10px; background: var(--acento);
       color: #fff !important; text-decoration: none; font-weight: 600; font-size: 15px;
       border: 2px solid var(--acento); transition: filter .15s, transform .15s; }
.btn:hover { filter: brightness(1.1); transform: translateY(-1px); }
.btn--fantasma { background: transparent; color: #fff !important; border-color: rgba(255,255,255,.45); }
.btn--pequeno { padding: 9px 18px; font-size: 14px; }
.btn--bloque { display: block; text-align: center; margin-top: 26px; }
.seccion .btn--fantasma { color: var(--acento) !important; border-color: var(--acento); }

/* ── Portada ────────────────────────────────────────────────── */
.hero { padding: 76px 0 84px; color: #fff;
        background:
          radial-gradient(760px 420px at 82% 18%, rgba(34,211,238,.18), transparent 68%),
          linear-gradient(160deg, var(--marca-1) 0%, var(--marca-2) 100%); }
.hero__rejilla { display: grid; grid-template-columns: 1.25fr .75fr; gap: 56px; align-items: center; }
@media (max-width: 900px) { .hero__rejilla { grid-template-columns: 1fr; gap: 42px; } }

.eyebrow { text-transform: uppercase; letter-spacing: .13em; font-size: 12.5px; font-weight: 700;
           color: var(--marca-brillo); margin: 0 0 18px; }
.hero h1 { font-size: clamp(31px, 4.6vw, 50px); line-height: 1.08; letter-spacing: -.035em; margin: 0 0 22px; }
.hero__sub { font-size: clamp(16.5px, 1.9vw, 19px); color: rgba(255,255,255,.80); max-width: 52ch; margin: 0 0 32px; }
.hero__botones { display: flex; gap: 14px; flex-wrap: wrap; }
.hero__pie { margin: 26px 0 0; font-size: 14px; color: rgba(255,255,255,.62); }

/* Marco de móvil para el vídeo vertical */
.hero__video { display: flex; flex-direction: column; align-items: center; }
.movil { width: min(100%, 268px); background: #05101f; border: 9px solid #0f1b33;
         border-radius: 30px; padding: 0; overflow: hidden;
         box-shadow: 0 18px 50px rgba(0,0,0,.42); }
.movil video { display: block; width: 100%; height: auto; background: #05101f; border-radius: 21px; }
.hero__videopie { margin: 14px 0 0; font-size: 13.5px; color: rgba(255,255,255,.58); text-align: center; }

/* ── Secciones ──────────────────────────────────────────────── */
.seccion { padding: 88px 0; }
.seccion--alt { background: var(--fondo-alt); }
.seccion h2 { font-size: clamp(26px, 3.6vw, 38px); letter-spacing: -.028em; margin: 0 0 18px; line-height: 1.18; }
.seccion__intro { color: var(--tinta-suave); margin: 0 0 46px; }
.grande { font-size: 19px; }
.estrecho p { color: var(--tinta-suave); }

/* Planes */
.planes { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 26px; }
.plan { position: relative; background: var(--fondo); border: 1px solid var(--linea);
        border-radius: var(--radio); padding: 34px 30px; box-shadow: var(--sombra); }
.plan--destacado { border-color: var(--acento); border-width: 2px; }
.etiqueta { position: absolute; top: -13px; left: 30px; background: var(--acento); color: #fff;
            font-size: 12px; font-weight: 700; padding: 5px 13px; border-radius: 999px;
            text-transform: uppercase; letter-spacing: .06em; }
.plan h3 { margin: 0 0 6px; font-size: 23px; letter-spacing: -.02em; }
.plan__para { margin: 0 0 22px; color: var(--tinta-suave); font-size: 15px; }
.plan__precio { font-size: 40px; font-weight: 800; letter-spacing: -.035em; margin: 0 0 26px; }
.plan__precio span { display: block; font-size: 16px; font-weight: 500; color: var(--tinta-suave); letter-spacing: 0; margin-top: 2px; }
.plan ul { list-style: none; padding: 0; margin: 0; }
.plan li { position: relative; padding: 9px 0 9px 28px; font-size: 15px; color: var(--tinta-suave);
           border-bottom: 1px solid var(--linea); }
.plan li:last-child { border-bottom: 0; }
.plan li::before { content: "✓"; position: absolute; left: 0; color: var(--acento); font-weight: 800; }
.plan__plazo { margin: 22px 0 0; font-size: 14px; font-weight: 600; color: var(--acento); }

.extra { margin-top: 34px; padding: 30px 32px; background: var(--fondo); border: 1px solid var(--linea);
         border-left: 4px solid var(--acento); border-radius: var(--radio); }
.extra h3 { margin: 0 0 10px; font-size: 19px; }
.extra p { margin: 0; color: var(--tinta-suave); }

/* Prueba el asistente */
.prueba { background: linear-gradient(180deg, var(--fondo) 0%, var(--fondo-alt) 100%); }
.prueba__rejilla { display: grid; grid-template-columns: 1fr .9fr; gap: 52px; align-items: center; }
@media (max-width: 900px) { .prueba__rejilla { grid-template-columns: 1fr; gap: 34px; } }
.prueba p { color: var(--tinta-suave); }
.ilustra { border-radius: var(--radio); box-shadow: var(--sombra); width: 100%; }
.flecha { font-size: 44px; color: var(--acento); margin: 24px 0 0; animation: rebote 2s ease-in-out infinite; }
@keyframes rebote { 0%,100% { transform: translateY(0); } 50% { transform: translateY(10px); } }

/* Pasos */
.pasos { list-style: none; counter-reset: paso; padding: 0; margin: 46px 0 0;
         display: grid; gap: 26px; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.pasos li { counter-increment: paso; position: relative; padding-top: 50px; }
.pasos li::before { content: counter(paso); position: absolute; top: 0; left: 0;
                    width: 36px; height: 36px; display: grid; place-items: center;
                    background: var(--acento); color: #fff; border-radius: 50%;
                    font-weight: 800; font-size: 16px; }
.pasos h3 { margin: 0 0 7px; font-size: 18px; }
.pasos p { margin: 0; color: var(--tinta-suave); font-size: 15px; }

/* Preguntas */
details { border-bottom: 1px solid var(--linea); padding: 20px 0; }
summary { cursor: pointer; font-weight: 600; font-size: 17px; list-style: none; position: relative; padding-right: 32px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 0; top: -3px; font-size: 24px;
                 font-weight: 400; color: var(--acento); transition: transform .2s; }
details[open] summary::after { transform: rotate(45deg); }
details p { margin: 14px 0 0; color: var(--tinta-suave); }

/* CTA final */
.cta { background: linear-gradient(160deg, var(--marca-1) 0%, var(--marca-2) 100%); color: #fff; }
.cta h2, .cta .grande { color: #fff; }
.cta p, .cta .estrecho p { color: rgba(255,255,255,.80); }
.cta a { color: var(--marca-brillo); }
.cta .estrecho { margin-inline: auto; }

/* Pie */
.pie { background: var(--tinta); color: rgba(255,255,255,.62); padding: 30px 0; }
.pie__fila { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 14px; }
.pie p { margin: 0; }
.pie a { color: rgba(255,255,255,.86); }