/* ==========================================================================
   LivendauerShop — hoja de estilos principal
   Paleta tomada del logo: negro, plata metálico y rojo intenso.
   ========================================================================== */

/* --- 1. Variables ------------------------------------------------------- */
:root {
  --negro:        #0a0a0c;
  --negro-2:      #101014;
  --superficie:   #16161b;
  --superficie-2: #1d1d24;
  --borde:        #2a2a33;
  --borde-claro:  #3a3a46;

  --texto:        #f4f4f6;
  --texto-suave:  #a7a7b4;
  --texto-tenue:  #6f6f7d;

  --rojo:         #e10600;
  --rojo-claro:   #ff2b24;
  --rojo-oscuro:  #9d0400;
  --rojo-sombra:  rgba(225, 6, 0, 0.35);

  --plata:        linear-gradient(180deg, #ffffff 0%, #c8ccd4 55%, #8d919b 100%);

  --radio:        14px;
  --radio-sm:     9px;
  --radio-lg:     22px;

  --ancho:        1180px;
  --transicion:   0.25s cubic-bezier(0.4, 0, 0.2, 1);

  --sombra:       0 4px 24px rgba(0, 0, 0, 0.45);
  --sombra-alta:  0 18px 50px rgba(0, 0, 0, 0.6);

  --fuente: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
            "Helvetica Neue", Arial, sans-serif;
}

/* --- 2. Reset ----------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

/* Ojo: aquí NO se pone overflow-x. Recortar el scroll lateral en <html> o en
   <body> rompe position:sticky en toda la web (el panel de compra de la ficha
   deja de quedarse fijo). Los elementos decorativos se contienen ellos mismos:
   los orbes son position:fixed y el hero recorta su propia rejilla en fuga. */
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--fuente);
  background: var(--negro);
  color: var(--texto);
  line-height: 1.65;
  font-size: 16px;
}

/* Textura de fondo: rejilla sutil + halo rojo, igual que el logo */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(900px 500px at 78% -8%, rgba(225, 6, 0, 0.13), transparent 65%),
    radial-gradient(700px 420px at 5% 12%, rgba(225, 6, 0, 0.06), transparent 60%),
    linear-gradient(180deg, var(--negro-2) 0%, var(--negro) 100%);
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.35;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.022) 1px, transparent 1px);
  background-size: 58px 58px;
  mask-image: radial-gradient(ellipse 100% 60% at 50% 0%, #000 30%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 100% 60% at 50% 0%, #000 30%, transparent 78%);
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 {
  margin: 0 0 0.5em;
  line-height: 1.15;
  letter-spacing: -0.02em;
  font-weight: 800;
}
/* balance reparte las líneas para que no quede una palabra suelta abajo */
h1 { font-size: clamp(2rem, 4.4vw, 3.35rem); text-wrap: balance; }
h2 { font-size: clamp(1.7rem, 3.6vw, 2.6rem); }
h3 { font-size: 1.22rem; }
p  { margin: 0 0 1rem; }

::selection { background: var(--rojo); color: #fff; }

:focus-visible {
  outline: 2px solid var(--rojo-claro);
  outline-offset: 3px;
  border-radius: 4px;
}

/* --- 3. Utilidades ------------------------------------------------------ */
.contenedor {
  width: 100%;
  max-width: var(--ancho);
  margin-inline: auto;
  padding-inline: 22px;
}

.seccion { padding: clamp(56px, 9vw, 104px) 0; }
.seccion--estrecha { padding: clamp(40px, 6vw, 68px) 0; }

.plata {
  background: var(--plata);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.rojo { color: var(--rojo-claro); }

.centrado { text-align: center; }
.oculto { display: none !important; }

.etiqueta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border: 1px solid var(--borde-claro);
  border-radius: 100px;
  background: rgba(255, 255, 255, 0.03);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--texto-suave);
  margin-bottom: 18px;
}
.etiqueta::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--rojo);
  box-shadow: 0 0 10px var(--rojo);
}

.subtitulo {
  color: var(--texto-suave);
  font-size: 1.06rem;
  max-width: 62ch;
}
.centrado .subtitulo { margin-inline: auto; }

.cabecera-seccion { margin-bottom: 46px; }

/* --- 4. Botones --------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 13px 26px;
  border: 1px solid transparent;
  border-radius: 100px;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: var(--transicion);
  white-space: nowrap;
}

.btn--rojo {
  background: linear-gradient(180deg, var(--rojo-claro), var(--rojo-oscuro));
  color: #fff;
  box-shadow: 0 6px 22px var(--rojo-sombra);
}
.btn--rojo:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 34px var(--rojo-sombra);
}

.btn--fantasma {
  background: rgba(255, 255, 255, 0.04);
  border-color: var(--borde-claro);
  color: var(--texto);
}
.btn--fantasma:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: #55555f;
  transform: translateY(-2px);
}

.btn--plano { background: none; color: var(--texto-suave); padding: 13px 8px; }
.btn--plano:hover { color: var(--texto); }

.btn--ancho { width: 100%; }
.btn--sm { padding: 9px 18px; font-size: 0.86rem; }

.grupo-botones {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.centrado .grupo-botones { justify-content: center; }

/* --- 5. Cabecera -------------------------------------------------------- */
.cabecera {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: rgba(10, 10, 12, 0.72);
  border-bottom: 1px solid transparent;
  transition: var(--transicion);
}
.cabecera--fija {
  background: rgba(10, 10, 12, 0.93);
  border-bottom-color: var(--borde);
}
.cabecera__interior {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  height: 72px;
}

.logo { display: flex; align-items: center; gap: 11px; flex-shrink: 0; }
.logo img { height: 40px; width: auto; }
.logo__texto { display: flex; flex-direction: column; line-height: 1.05; }
.logo__nombre {
  font-weight: 900;
  font-size: 1.02rem;
  letter-spacing: 0.02em;
  background: var(--plata);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.logo__nombre span { color: var(--rojo); -webkit-text-fill-color: var(--rojo); }
.logo__lema {
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--texto-tenue);
}

.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  padding: 9px 14px;
  border-radius: 100px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--texto-suave);
  transition: var(--transicion);
}
.nav a:hover { color: var(--texto); background: rgba(255, 255, 255, 0.05); }
.nav a.activo { color: var(--texto); font-weight: 650; }
.nav a.activo::after {
  content: "";
  display: block;
  height: 2px;
  margin: 5px auto -6px;
  width: 16px;
  border-radius: 2px;
  background: var(--rojo);
}

.cabecera__acciones { display: flex; align-items: center; gap: 10px; }

.hamburguesa {
  display: none;
  width: 42px; height: 42px;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--borde);
  border-radius: 11px;
  cursor: pointer;
  padding: 0;
}
.hamburguesa span {
  display: block;
  position: relative;
  width: 18px; height: 2px;
  background: var(--texto);
  border-radius: 2px;
  transition: var(--transicion);
}
.hamburguesa span::before,
.hamburguesa span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px; height: 2px;
  background: var(--texto);
  border-radius: 2px;
  transition: var(--transicion);
}
.hamburguesa span::before { top: -6px; }
.hamburguesa span::after  { top: 6px; }
.hamburguesa[aria-expanded="true"] span { background: transparent; }
.hamburguesa[aria-expanded="true"] span::before { top: 0; transform: rotate(45deg); }
.hamburguesa[aria-expanded="true"] span::after  { top: 0; transform: rotate(-45deg); }

/* --- 6. Hero ------------------------------------------------------------ */
.hero {
  position: relative;
  /* clip (no hidden) contiene los orbes y la rejilla en fuga sin crear
     un contenedor de scroll ni romper el 3D de la escena */
  overflow: clip;
  padding: clamp(52px, 9vw, 96px) 0 clamp(48px, 7vw, 84px);
}
.hero__rejilla {
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
}
.hero h1 { margin-bottom: 20px; }
.hero__texto {
  font-size: 1.13rem;
  color: var(--texto-suave);
  max-width: 54ch;
  margin-bottom: 30px;
}
.hero__datos {
  display: flex;
  flex-wrap: wrap;
  gap: 30px;
  margin-top: 42px;
  padding-top: 28px;
  border-top: 1px solid var(--borde);
}
.dato__cifra {
  font-size: 1.65rem;
  font-weight: 900;
  background: var(--plata);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.dato__texto {
  font-size: 0.8rem;
  color: var(--texto-tenue);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* Maqueta de navegador del hero */
.marco-navegador {
  border: 1px solid var(--borde-claro);
  border-radius: var(--radio-lg);
  background: var(--superficie);
  box-shadow: var(--sombra-alta);
  overflow: hidden;
  transform: perspective(1400px) rotateY(-7deg) rotateX(3deg);
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}
.marco-navegador:hover { transform: perspective(1400px) rotateY(-2deg) rotateX(1deg); }
.marco-navegador__barra {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 12px 16px;
  background: var(--superficie-2);
  border-bottom: 1px solid var(--borde);
}
.marco-navegador__barra i {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--rojo);
  opacity: 0.85;
}
.marco-navegador__barra i:nth-child(2) { opacity: 0.55; }
.marco-navegador__barra i:nth-child(3) { opacity: 0.3; }
.marco-navegador__url {
  flex: 1;
  margin-left: 10px;
  padding: 4px 12px;
  border-radius: 100px;
  background: rgba(0, 0, 0, 0.4);
  font-size: 0.7rem;
  color: var(--texto-tenue);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.marco-navegador__cuerpo { padding: 0; background: var(--negro-2); }
.marco-navegador__cuerpo img { width: 100%; }

/* --- 7. Tarjetas genéricas --------------------------------------------- */
.tarjeta {
  background: linear-gradient(180deg, rgba(255,255,255,0.035), rgba(255,255,255,0.012));
  border: 1px solid var(--borde);
  border-radius: var(--radio);
  padding: 26px;
  transition: var(--transicion);
}
.tarjeta:hover {
  border-color: var(--borde-claro);
  transform: translateY(-3px);
  box-shadow: var(--sombra);
}

.rejilla { display: grid; gap: 22px; }
.rejilla--2 { grid-template-columns: repeat(2, 1fr); }
.rejilla--3 { grid-template-columns: repeat(3, 1fr); }
.rejilla--4 { grid-template-columns: repeat(4, 1fr); }
.rejilla--formulario {
  grid-template-columns: 1.5fr 0.85fr;
  gap: 36px;
}
.rejilla--formulario > aside { min-width: 0; }
/* El lateral acompaña al formulario mientras se rellena */
.lateral-fijo { position: sticky; top: 92px; }

/* --- 8. Pasos ----------------------------------------------------------- */
.paso { position: relative; padding-top: 8px; }
.paso__numero {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px; height: 46px;
  margin-bottom: 16px;
  border-radius: 13px;
  border: 1px solid var(--borde-claro);
  background: linear-gradient(180deg, rgba(225,6,0,0.18), rgba(225,6,0,0.04));
  font-weight: 900;
  font-size: 1.15rem;
  color: var(--rojo-claro);
}
.paso p { color: var(--texto-suave); margin: 0; font-size: 0.96rem; }

/* --- 9. Catálogo de plantillas ----------------------------------------- */
.filtros {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-bottom: 34px;
}
.filtro {
  padding: 9px 18px;
  border: 1px solid var(--borde);
  border-radius: 100px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--texto-suave);
  font-family: inherit;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transicion);
}
.filtro:hover { color: var(--texto); border-color: var(--borde-claro); }
.filtro.activo {
  background: linear-gradient(180deg, var(--rojo-claro), var(--rojo-oscuro));
  border-color: transparent;
  color: #fff;
  box-shadow: 0 4px 16px var(--rojo-sombra);
}

.tarjeta-plantilla {
  display: flex;
  flex-direction: column;
  background: var(--superficie);
  border: 1px solid var(--borde);
  border-radius: var(--radio);
  overflow: hidden;
  transition: var(--transicion);
}
.tarjeta-plantilla:hover {
  border-color: var(--rojo);
  transform: translateY(-5px);
  box-shadow: 0 20px 46px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(225, 6, 0, 0.28);
}
.tarjeta-plantilla__imagen {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--negro-2);
  border-bottom: 1px solid var(--borde);
}
.tarjeta-plantilla__imagen img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.tarjeta-plantilla:hover .tarjeta-plantilla__imagen img { transform: scale(1.045); }
.insignia {
  position: absolute;
  top: 12px; left: 12px;
  padding: 5px 11px;
  border-radius: 100px;
  background: linear-gradient(180deg, var(--rojo-claro), var(--rojo-oscuro));
  color: #fff;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  box-shadow: 0 4px 14px var(--rojo-sombra);
}
.tarjeta-plantilla__cuerpo {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 20px;
}
.tarjeta-plantilla__categoria {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.11em;
  color: var(--texto-tenue);
  margin-bottom: 6px;
}
.tarjeta-plantilla h3 { margin-bottom: 8px; font-size: 1.15rem; }
.tarjeta-plantilla p {
  color: var(--texto-suave);
  font-size: 0.92rem;
  margin-bottom: 16px;
  flex: 1;
}
.tarjeta-plantilla__pie {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--borde);
}
.precio { display: flex; align-items: baseline; gap: 5px; }
.precio__desde { font-size: 0.72rem; color: var(--texto-tenue); }
.precio__cifra { font-size: 1.42rem; font-weight: 900; }
.precio__moneda { font-size: 0.95rem; font-weight: 700; color: var(--texto-suave); }

.etiquetas { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 14px; }
.mini-etiqueta {
  padding: 3px 9px;
  border: 1px solid var(--borde);
  border-radius: 100px;
  font-size: 0.72rem;
  color: var(--texto-suave);
  background: rgba(255, 255, 255, 0.02);
}

.sin-resultados {
  grid-column: 1 / -1;
  padding: 56px 20px;
  text-align: center;
  color: var(--texto-tenue);
  border: 1px dashed var(--borde);
  border-radius: var(--radio);
}

/* --- 10. Ficha de plantilla ------------------------------------------- */
/* Sin align-items:start a propósito. El lateral tiene que estirarse a lo alto
   de la fila para que el panel de dentro tenga recorrido donde quedarse fijo:
   un elemento sticky que además es la propia celda de la rejilla no se pega. */
.ficha { display: grid; grid-template-columns: 1.35fr 0.65fr; gap: 42px; }
.panel-lateral { min-width: 0; }
.ficha__galeria {
  border: 1px solid var(--borde);
  border-radius: var(--radio);
  overflow: hidden;
  background: var(--superficie);
}
.ficha__miniaturas { display: flex; gap: 10px; margin-top: 12px; flex-wrap: wrap; }
.ficha__miniaturas button {
  width: 86px;
  aspect-ratio: 16/10;
  padding: 0;
  border: 1px solid var(--borde);
  border-radius: var(--radio-sm);
  overflow: hidden;
  background: none;
  cursor: pointer;
  opacity: 0.55;
  transition: var(--transicion);
}
.ficha__miniaturas button.activo,
.ficha__miniaturas button:hover { opacity: 1; border-color: var(--rojo); }
.ficha__miniaturas img { width: 100%; height: 100%; object-fit: cover; }

.panel-compra {
  position: sticky;
  top: 92px;
  background: var(--superficie);
  border: 1px solid var(--borde);
  border-radius: var(--radio);
  padding: 26px;
}
.panel-compra .precio__cifra { font-size: 2.1rem; }
.lista-check { list-style: none; padding: 0; margin: 0 0 22px; }
.lista-check li {
  position: relative;
  padding-left: 27px;
  margin-bottom: 9px;
  color: var(--texto-suave);
  font-size: 0.94rem;
}
.lista-check li::before {
  content: "";
  position: absolute;
  left: 0; top: 8px;
  width: 15px; height: 9px;
  border-left: 2px solid var(--rojo-claro);
  border-bottom: 2px solid var(--rojo-claro);
  transform: rotate(-45deg);
  border-radius: 1px;
}
.lista-cruz li::before {
  border: 0;
  top: 11px;
  width: 11px; height: 2px;
  background: var(--texto-tenue);
  transform: none;
}

/* --- 11. Precios -------------------------------------------------------- */
.plan {
  display: flex;
  flex-direction: column;
  position: relative;
  background: var(--superficie);
  border: 1px solid var(--borde);
  border-radius: var(--radio-lg);
  padding: 32px 26px;
  transition: var(--transicion);
}
.plan:hover { transform: translateY(-4px); border-color: var(--borde-claro); }
.plan--destacado {
  border-color: var(--rojo);
  background: linear-gradient(180deg, rgba(225,6,0,0.09), rgba(255,255,255,0.015));
  box-shadow: 0 0 0 1px rgba(225,6,0,0.22), 0 20px 50px rgba(0,0,0,0.5);
}
.plan__cinta {
  position: absolute;
  top: -13px; left: 50%;
  transform: translateX(-50%);
  padding: 5px 16px;
  border-radius: 100px;
  background: linear-gradient(180deg, var(--rojo-claro), var(--rojo-oscuro));
  color: #fff;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
  box-shadow: 0 6px 18px var(--rojo-sombra);
}
.plan__precio {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin: 6px 0 4px;
}
.plan__precio b { font-size: 2.7rem; font-weight: 900; letter-spacing: -0.03em; }
.plan__nota { color: var(--texto-tenue); font-size: 0.85rem; margin-bottom: 22px; }
.plan .lista-check { flex: 1; }

/* --- 12. Portfolio ------------------------------------------------------ */
.caso {
  display: block;
  position: relative;
  border: 1px solid var(--borde);
  border-radius: var(--radio);
  overflow: hidden;
  background: var(--superficie);
  transition: var(--transicion);
}
.caso:hover { border-color: var(--rojo); transform: translateY(-4px); box-shadow: var(--sombra-alta); }
.caso__imagen { aspect-ratio: 16/10; overflow: hidden; background: var(--negro-2); }
.caso__imagen img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.caso:hover .caso__imagen img { transform: scale(1.05); }
.caso__cuerpo { padding: 20px; }
.caso__cuerpo p { color: var(--texto-suave); font-size: 0.93rem; margin-bottom: 0; }
.caso__enlace {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 14px;
  color: var(--rojo-claro);
  font-weight: 700;
  font-size: 0.9rem;
}

/* --- 13. Formulario ----------------------------------------------------- */
.formulario {
  background: var(--superficie);
  border: 1px solid var(--borde);
  border-radius: var(--radio-lg);
  padding: clamp(24px, 4vw, 40px);
}
.campo { margin-bottom: 20px; }
.campo label {
  display: block;
  margin-bottom: 7px;
  font-size: 0.88rem;
  font-weight: 650;
  color: var(--texto);
}
.campo label .req { color: var(--rojo-claro); }
.campo .ayuda { font-size: 0.8rem; color: var(--texto-tenue); font-weight: 400; }

.campo input[type="text"],
.campo input[type="email"],
.campo input[type="tel"],
.campo select,
.campo textarea {
  width: 100%;
  padding: 13px 15px;
  border: 1px solid var(--borde-claro);
  border-radius: var(--radio-sm);
  background: rgba(0, 0, 0, 0.32);
  color: var(--texto);
  font-family: inherit;
  font-size: 0.97rem;
  transition: var(--transicion);
}
.campo textarea { min-height: 140px; resize: vertical; line-height: 1.6; }
.campo select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23a7a7b4' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 15px center;
  padding-right: 40px;
  cursor: pointer;
}
.campo input::placeholder,
.campo textarea::placeholder { color: var(--texto-tenue); }
.campo input:focus,
.campo select:focus,
.campo textarea:focus {
  outline: none;
  border-color: var(--rojo);
  box-shadow: 0 0 0 3px rgba(225, 6, 0, 0.16);
}
.campo input[aria-invalid="true"],
.campo textarea[aria-invalid="true"],
.campo select[aria-invalid="true"] { border-color: var(--rojo); }

.error {
  display: none;
  margin-top: 6px;
  font-size: 0.82rem;
  color: var(--rojo-claro);
}
.error.visible { display: block; }

.fila { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }

.casillas {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 10px;
}
.casilla {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border: 1px solid var(--borde);
  border-radius: var(--radio-sm);
  background: rgba(0, 0, 0, 0.22);
  cursor: pointer;
  font-size: 0.9rem;
  transition: var(--transicion);
}
.casilla:hover { border-color: var(--borde-claro); }
.casilla:has(input:checked) {
  border-color: var(--rojo);
  background: rgba(225, 6, 0, 0.09);
}
.casilla input { accent-color: var(--rojo); width: 17px; height: 17px; cursor: pointer; flex-shrink: 0; }

.legal-check {
  display: flex;
  align-items: flex-start;
  gap: 11px;
  font-size: 0.87rem;
  color: var(--texto-suave);
  cursor: pointer;
}
.legal-check input { accent-color: var(--rojo); width: 17px; height: 17px; margin-top: 2px; flex-shrink: 0; }
.legal-check a { color: var(--rojo-claro); text-decoration: underline; }

.trampa { position: absolute; left: -9999px; opacity: 0; pointer-events: none; }

.aviso {
  padding: 14px 18px;
  border-radius: var(--radio-sm);
  border: 1px solid var(--borde-claro);
  background: rgba(255, 255, 255, 0.03);
  font-size: 0.9rem;
  color: var(--texto-suave);
}
.aviso--error { border-color: var(--rojo); background: rgba(225, 6, 0, 0.09); color: #ffb3b0; }

/* --- 14. FAQ ------------------------------------------------------------ */
.faq { border: 1px solid var(--borde); border-radius: var(--radio); background: var(--superficie); overflow: hidden; }
.faq + .faq { margin-top: 12px; }
.faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 19px 22px;
  font-weight: 650;
  cursor: pointer;
  list-style: none;
  transition: var(--transicion);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary:hover { background: rgba(255, 255, 255, 0.03); }
.faq summary::after {
  content: "+";
  flex-shrink: 0;
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--rojo-claro);
  transition: transform 0.25s ease;
}
.faq[open] summary::after { transform: rotate(45deg); }
.faq__cuerpo { padding: 0 22px 20px; color: var(--texto-suave); font-size: 0.95rem; }
.faq__cuerpo p:last-child { margin-bottom: 0; }

/* --- 15. Llamada final -------------------------------------------------- */
.cta-final {
  position: relative;
  border: 1px solid var(--borde-claro);
  border-radius: var(--radio-lg);
  padding: clamp(36px, 6vw, 66px) clamp(24px, 5vw, 56px);
  background:
    radial-gradient(700px 300px at 50% 0%, rgba(225, 6, 0, 0.17), transparent 70%),
    var(--superficie);
  overflow: hidden;
}

/* --- 16. Pie ------------------------------------------------------------ */
.pie {
  margin-top: 40px;
  border-top: 1px solid var(--borde);
  background: rgba(0, 0, 0, 0.32);
  padding: 52px 0 26px;
}
.pie__rejilla {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 34px;
  margin-bottom: 38px;
}
.pie h4 {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--texto-tenue);
  margin-bottom: 15px;
}
.pie ul { list-style: none; padding: 0; margin: 0; }
.pie li { margin-bottom: 9px; }
.pie a { color: var(--texto-suave); font-size: 0.92rem; transition: var(--transicion); }
.pie a:hover { color: var(--rojo-claro); }
.pie__intro { color: var(--texto-suave); font-size: 0.92rem; max-width: 34ch; margin: 14px 0 0; }
.pie__barra {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding-top: 22px;
  border-top: 1px solid var(--borde);
  font-size: 0.85rem;
  color: var(--texto-tenue);
}

/* --- 17. WhatsApp flotante --------------------------------------------- */
.flotante {
  position: fixed;
  right: 20px; bottom: 20px;
  z-index: 90;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px; height: 56px;
  border-radius: 50%;
  background: #25d366;
  box-shadow: 0 8px 26px rgba(37, 211, 102, 0.4);
  transition: var(--transicion);
}
.flotante:hover { transform: scale(1.08); }
.flotante svg { width: 30px; height: 30px; fill: #fff; }

/* --- 18. Animación de entrada ------------------------------------------ */
.aparece {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.aparece.visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition-duration: 0.01ms !important; }
  .aparece { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}

/* --- 19. Contenido legal ------------------------------------------------ */
.texto-legal { max-width: 78ch; }
.texto-legal h2 { font-size: 1.4rem; margin-top: 38px; }
.texto-legal h3 { font-size: 1.08rem; margin-top: 26px; }
.texto-legal p, .texto-legal li { color: var(--texto-suave); }
.texto-legal ul { padding-left: 22px; }
.texto-legal li { margin-bottom: 8px; }
.texto-legal .rellenar {
  background: rgba(225, 6, 0, 0.14);
  border-bottom: 1px dashed var(--rojo);
  padding: 1px 5px;
  border-radius: 3px;
  color: #ffb3b0;
}

/* --- 20. Responsive ----------------------------------------------------- */
@media (max-width: 1000px) {
  .rejilla--4 { grid-template-columns: repeat(2, 1fr); }
  .pie__rejilla { grid-template-columns: 1fr 1fr; gap: 28px; }
  .ficha { grid-template-columns: 1fr; }
  .panel-compra, .lateral-fijo { position: static; }
}

@media (max-width: 860px) {
  .nav {
    position: fixed;
    inset: 72px 0 auto;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 16px 22px 26px;
    background: rgba(10, 10, 12, 0.98);
    border-bottom: 1px solid var(--borde);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    transform: translateY(-130%);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--sombra-alta);
  }
  .nav.abierto { transform: translateY(0); }
  .nav a { padding: 13px 14px; font-size: 1rem; border-radius: var(--radio-sm); }
  .nav a.activo::after { display: none; }
  .hamburguesa { display: flex; }
  .cabecera__acciones .btn { display: none; }

  .hero__rejilla { grid-template-columns: 1fr; }
  .marco-navegador { transform: none; }
  .marco-navegador:hover { transform: none; }

  .rejilla--3, .rejilla--2 { grid-template-columns: 1fr; }
  .rejilla--formulario { grid-template-columns: 1fr; }
  .rejilla--formulario > aside { position: static; }
}

@media (max-width: 620px) {
  .rejilla--4 { grid-template-columns: 1fr; }
  .fila { grid-template-columns: 1fr; gap: 0; }
  .pie__rejilla { grid-template-columns: 1fr; }
  .hero__datos { gap: 22px; }
  .grupo-botones .btn { width: 100%; }
  .flotante { right: 14px; bottom: 14px; }
}
