/* ============================================================
   Hoja base de la fábrica de webs.
   Dos colores se cambian arriba y todo el sitio cambia.
   La letra base arranca en 20px: nunca bajar de ahí.
   ============================================================ */

:root{
  --tinta: #14161a;
  --papel: #ffffff;
  --suave: #f4f5f7;
  --gris: #5d6470;
  --linea: #e3e6ea;
  --acento: #B4451F;
  --acento-texto: #ffffff;
  --radio: 18px;
  --ancho: 1140px;
  --letra: 20px;
}

*{ box-sizing: border-box; }

html{ scroll-behavior: smooth; }

body{
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  font-size: var(--letra);
  line-height: 1.6;
  color: var(--tinta);
  background: var(--papel);
  -webkit-font-smoothing: antialiased;
}

img{ max-width: 100%; height: auto; display: block; }

a{ color: inherit; }

h1, h2, h3{ line-height: 1.15; letter-spacing: -0.02em; margin: 0 0 .6em; }
h1{ font-size: clamp(2.1rem, 5vw, 3.6rem); }
h2{ font-size: clamp(1.6rem, 3.2vw, 2.4rem); }
h3{ font-size: 1.15rem; }
p{ margin: 0 0 1em; }

/* ---------- barra ---------- */
.barra{
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: .8rem clamp(1rem, 4vw, 2.5rem);
  background: color-mix(in srgb, var(--papel) 88%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--linea);
}
.marca{ font-weight: 800; font-size: 1.05rem; text-decoration: none; letter-spacing: -0.02em; }
.barra nav{ display: flex; align-items: center; gap: 1.1rem; flex-wrap: wrap; }
.barra nav a{ text-decoration: none; font-size: .85rem; color: var(--gris); }
.barra nav a:hover{ color: var(--tinta); }

/* ---------- botones ---------- */
.boton{
  display: inline-flex; align-items: center; justify-content: center;
  gap: .5rem; padding: .85em 1.3em;
  background: var(--acento); color: var(--acento-texto) !important;
  border-radius: 999px; text-decoration: none; font-weight: 700;
  font-size: .95rem; border: 2px solid var(--acento);
  transition: transform .15s ease, filter .15s ease;
}
.boton:hover{ transform: translateY(-2px); filter: brightness(1.08); }
.boton-chico{ padding: .6em 1em; font-size: .82rem; }
.boton-grande{ padding: 1.1em 1.9em; font-size: 1.05rem; }
.boton-fantasma{ background: transparent; color: var(--tinta) !important; border-color: var(--linea); }
.boton-fantasma:hover{ border-color: var(--tinta); }

/* ---------- hero ---------- */
.hero{
  max-width: var(--ancho); margin: 0 auto;
  padding: clamp(2rem, 6vw, 4.5rem) clamp(1rem, 4vw, 2.5rem);
  display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: center;
}
.volanta{
  font-size: .8rem; letter-spacing: .14em; text-transform: uppercase;
  color: var(--acento); font-weight: 700; margin-bottom: 1rem;
}
.bajada{ font-size: 1.1rem; color: var(--gris); max-width: 34ch; }
.acciones{ display: flex; flex-wrap: wrap; gap: .8rem; margin: 1.6rem 0 1.4rem; }
.datos{ list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: .5rem 1.4rem; font-size: .82rem; color: var(--gris); }
.datos li::before{ content: "•"; margin-right: .45rem; color: var(--acento); }
.hero-foto img{ border-radius: var(--radio); aspect-ratio: 9/11; object-fit: cover; }

/* ---------- bloques ---------- */
.bloque{ padding: clamp(2.5rem, 6vw, 4.5rem) clamp(1rem, 4vw, 2.5rem); }
.bloque > *{ max-width: var(--ancho); margin-left: auto; margin-right: auto; }
.bloque-oscuro{ background: var(--tinta); color: #f7f8fa; }
.bloque-oscuro .entrada{ color: #b9c0cb; }
.bloque-suave{ background: var(--suave); }
.entrada{ font-size: 1.05rem; color: var(--gris); max-width: 62ch; }

.grilla{ display: grid; gap: 1.1rem; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.tarjeta{
  padding: 1.5rem; border: 1px solid var(--linea); border-radius: var(--radio);
  background: var(--papel);
}
.bloque-oscuro .tarjeta{ background: #1d2027; border-color: #2b303a; }
.tarjeta h3{ margin-bottom: .35em; }
.tarjeta p{ margin: 0; font-size: .92rem; color: var(--gris); }
.bloque-oscuro .tarjeta p{ color: #b9c0cb; }

.pasos{ list-style: none; counter-reset: paso; padding: 0; margin: 0; display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); }
.pasos li{ counter-increment: paso; padding-left: 3rem; position: relative; font-size: .95rem; }
.pasos li::before{
  content: counter(paso); position: absolute; left: 0; top: 0;
  width: 2.2rem; height: 2.2rem; border-radius: 50%;
  background: var(--acento); color: var(--acento-texto);
  display: grid; place-items: center; font-weight: 800; font-size: .9rem;
}
.pasos strong{ display: block; }

.faq{ display: grid; gap: .6rem; }
.faq details{
  background: var(--papel); border: 1px solid var(--linea);
  border-radius: 14px; padding: 1rem 1.2rem;
}
.faq summary{ cursor: pointer; font-weight: 700; font-size: .98rem; }
.faq p{ margin: .7em 0 0; color: var(--gris); font-size: .92rem; }

.bloque-cierre{ text-align: center; }
.bloque-cierre p{ color: var(--gris); max-width: 46ch; margin-left: auto; margin-right: auto; }
.chico{ font-size: .8rem; color: var(--gris); }

/* ---------- pie ---------- */
.pie{ background: var(--suave); padding: 2.5rem clamp(1rem, 4vw, 2.5rem); border-top: 1px solid var(--linea); }
.pie p{ margin: 0 0 .4rem; font-size: .85rem; color: var(--gris); }

/* ---------- botón flotante ---------- */
.flotante{
  position: fixed; right: 1rem; bottom: 1rem; z-index: 30;
  background: var(--acento); color: var(--acento-texto);
  text-decoration: none; font-weight: 700; font-size: .85rem;
  padding: .85em 1.2em; border-radius: 999px;
  box-shadow: 0 10px 30px rgba(0,0,0,.18);
}

/* ---------- animación de entrada ---------- */
.aparece{ opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.aparece.visible{ opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce){
  .aparece{ opacity: 1; transform: none; transition: none; }
  html{ scroll-behavior: auto; }
}

/* ---------- móvil ---------- */
@media (max-width: 780px){
  .hero{ grid-template-columns: 1fr; }
  .hero-foto{ order: -1; }
  .hero-foto img{ aspect-ratio: 16/11; }
  .barra nav a:not(.boton){ display: none; }
  .flotante{ right: .8rem; bottom: .8rem; }
}