/* Página de venta (/) y páginas legales (términos y privacidad). Mobile first. */

:root {
  --color-primary: #1f5f8b;
  --color-primary-dark: #174868;
  --color-on-primary: #ffffff;
  --color-acento: #c8261b;
  --color-suave: #eef4f9;
  --color-divider: #ddd5c9;
  --ancho: 68rem;
}

[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

.saltar {
  position: absolute; left: 16px; top: -100px; z-index: 100;
  background: var(--color-text); color: var(--color-bg); padding: 12px 16px; font-weight: 700;
}
.saltar:focus { top: 16px; }

/* ---------- Cabecera y pie ---------- */
.sitio-cabecera {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 4px 16px;
  max-width: var(--ancho); margin: 0 auto; padding: 10px 16px;
}
.marca {
  display: inline-flex; align-items: center; gap: 8px; min-height: var(--tap);
  color: var(--color-primary); font-size: 1.25rem; font-weight: 900; text-decoration: none;
}
.sitio-cabecera ul { display: flex; flex-wrap: wrap; gap: 0 4px; margin: 0; padding: 0; list-style: none; }
.sitio-cabecera nav a {
  display: inline-flex; align-items: center; min-height: var(--tap); padding: 0 10px;
  color: var(--color-text); font-weight: 600; text-decoration: none;
}
.sitio-cabecera nav a:hover { text-decoration: underline; }
@media (max-width: 520px) {
  .sitio-cabecera nav li:nth-child(-n+3) { display: none; }  /* en el celular queda "Entrar" */
}

.sitio-pie {
  max-width: var(--ancho); margin: 0 auto; padding: 24px 16px 40px; border-top: 1px solid var(--color-divider);
  display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between; color: var(--color-muted);
}
.sitio-pie p { margin: 0; }
.sitio-pie ul { display: flex; flex-wrap: wrap; gap: 0 16px; margin: 0; padding: 0; list-style: none; }
.sitio-pie a { display: inline-flex; align-items: center; min-height: var(--tap); color: inherit; font-weight: 600; }

/* ---------- Botones ---------- */
.boton-grande { min-height: 52px; padding: 0 24px; font-size: 1.0625rem; }
.boton:hover { filter: brightness(1.08); }

/* ---------- Portada ---------- */
.portada {
  display: grid; gap: 32px; align-items: center;
  max-width: var(--ancho); margin: 0 auto; padding: 24px 16px 48px;
}
@media (min-width: 900px) { .portada { grid-template-columns: minmax(0, 1fr) 320px; padding-top: 48px; } }
.volanta { margin: 0 0 8px; color: var(--color-primary); font-weight: 800; text-transform: uppercase; letter-spacing: .06em; font-size: .875rem; }
.portada h1 { font-size: clamp(2.1rem, 8vw, 3.5rem); line-height: 1.05; letter-spacing: -.01em; margin-bottom: 16px; }
.bajada { font-size: 1.1875rem; max-width: 36rem; }
.botones-portada { display: flex; flex-wrap: wrap; gap: 12px; margin: 24px 0 8px; }
.nota-portada { color: var(--color-muted); font-size: .9375rem; margin: 8px 0 0; }

/* Celular con la demo en vivo (solo en pantallas grandes: lo carga js/landing.js) */
.portada-celular { display: none; }
@media (min-width: 900px) { .portada-celular { display: block; } }
.celular {
  width: 300px; height: 600px; margin: 0 auto; padding: 12px; border-radius: 40px;
  background: #1d1a17; box-shadow: 0 24px 60px rgba(29, 26, 23, .35);
}
.celular iframe { width: 100%; height: 100%; border: 0; border-radius: 28px; background: #fff; }

/* ---------- Secciones ---------- */
.seccion { max-width: var(--ancho); margin: 0 auto; padding: 48px 16px; }
.seccion-clara { max-width: none; background: #fff; border-block: 1px solid var(--color-divider); }
.seccion-clara > * { max-width: calc(var(--ancho) - 32px); margin-inline: auto; }
.seccion h2 { font-size: clamp(1.6rem, 6vw, 2.25rem); margin-bottom: 20px; }

.pasos-venta { list-style: none; margin: 0; padding: 0; display: grid; gap: 16px; counter-reset: paso; }
@media (min-width: 800px) { .pasos-venta { grid-template-columns: repeat(3, 1fr); } }
.pasos-venta li {
  counter-increment: paso; position: relative; padding: 20px 20px 16px 72px;
  background: #fff; border: 1px solid var(--color-divider); border-radius: var(--radius);
}
.pasos-venta li::before {
  content: counter(paso); position: absolute; left: 20px; top: 18px; width: 38px; height: 38px;
  display: grid; place-items: center; border-radius: 50%;
  background: var(--color-primary); color: var(--color-on-primary); font-weight: 900; font-size: 1.25rem;
}
.pasos-venta h3 { font-size: 1.25rem; }
.pasos-venta p { margin: 0; }

.funciones { list-style: none; margin: 0 auto; padding: 0; display: grid; gap: 20px 32px; }
@media (min-width: 700px) { .funciones { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .funciones { grid-template-columns: repeat(3, 1fr); } }
.funciones h3 { font-size: 1.125rem; margin-bottom: 4px; }
.funciones p { margin: 0; color: var(--color-muted); }

.demos { list-style: none; margin: 16px 0 0; padding: 0; display: grid; gap: 12px; grid-template-columns: repeat(2, minmax(0, 1fr)); }
@media (min-width: 800px) { .demos { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
.demos li { display: grid; }
.demo-enlace {
  display: grid; gap: 2px; min-height: 96px; padding: 14px 12px; align-content: end;
  border-radius: var(--radius); text-decoration: none; border: 2px solid transparent;
}
.demo-enlace b { font-size: 1.25rem; }
.demo-enlace span { font-size: .9375rem; font-weight: 600; hyphens: auto; overflow-wrap: anywhere; }
.demo-enlace:hover { transform: translateY(-2px); }
.demo-libreta {
  background: linear-gradient(#dde6ef 1px, transparent 1px) 0 0 / 16px 16px, linear-gradient(90deg, #dde6ef 1px, transparent 1px) 0 0 / 16px 16px, #fdfcf7;
  color: #1d4e89; border-color: #24211d;
}
.demo-clasica { background: #fbf8f3; color: #6a2620; border-color: #8c8178; font-family: Georgia, "Times New Roman", serif; }
.demo-caja { background: #caa472; color: #1d1a17; border-color: #1d1a17; }
.demo-moderna { background: #121212; color: #f4f4f2; border-color: #f59e0b; }

.tarjeta-precio {
  max-width: 26rem; padding: 24px; background: var(--color-suave); border: 2px solid var(--color-primary); border-radius: var(--radius);
}
.precio-venta { margin: 0 0 12px; font-size: 2.75rem; font-weight: 900; line-height: 1; }
.precio-venta small { font-size: 1.125rem; font-weight: 700; color: var(--color-muted); white-space: nowrap; }
.incluye { margin: 0 0 20px; padding: 0; list-style: none; display: grid; gap: 8px; }
.incluye li { padding-left: 28px; position: relative; font-weight: 600; }
.incluye li::before { content: "✓"; position: absolute; left: 0; color: var(--color-ok); font-weight: 900; }

.preguntas { display: grid; gap: 8px; max-width: 48rem; }
.preguntas details { background: #fff; border: 1px solid var(--color-divider); border-radius: var(--radius); padding: 0 16px; }
.preguntas summary { display: flex; align-items: center; min-height: 52px; font-weight: 700; cursor: pointer; }
.preguntas details[open] summary { border-bottom: 1px solid var(--color-divider); margin-bottom: 12px; }

.final { text-align: center; }
.final p { margin-inline: auto; max-width: 32rem; }
.contacto a { font-weight: 700; color: var(--color-primary); }

/* ---------- Términos y privacidad ---------- */
.legal { max-width: 46rem; margin: 0 auto; padding: 24px 16px 48px; }
.legal h1 { font-size: clamp(1.75rem, 7vw, 2.5rem); }
.legal h2 { font-size: 1.3rem; margin-top: 2em; }
.legal li { margin-bottom: .4em; }
.legal .actualizado { color: var(--color-muted); }
.legal a { color: var(--color-primary); font-weight: 600; }