/* Fuentes OFL incluidas en /fuentes (licencias ahí). */
@font-face {
  font-family: "Rajdhani";
  font-weight: 600;
  font-display: swap;
  src: url("/fuentes/rajdhani-latin-600-normal.woff2") format("woff2");
}
@font-face {
  font-family: "Rajdhani";
  font-weight: 700;
  font-display: swap;
  src: url("/fuentes/rajdhani-latin-700-normal.woff2") format("woff2");
}
@font-face {
  font-family: "Inter";
  font-weight: 100 900;
  font-display: swap;
  src: url("/fuentes/inter-latin-wght-normal.woff2") format("woff2");
}

:root {
  --fondo: #07090d;
  --panel: #0e131a;
  --borde: rgba(150, 175, 205, 0.14);
  --texto: #e8ecf2;
  --tenue: #8a94a6;
  --acento: #5cc8ff;
  --acento-oscuro: #2a8fd0;
  --error: #ff6b6b;
  --titulos: "Rajdhani", "Segoe UI", sans-serif;
  --cuerpo: "Inter", "Segoe UI", system-ui, sans-serif;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--fondo);
  color: var(--texto);
  font: 16px/1.6 var(--cuerpo);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--acento);
}

.tenue {
  color: var(--tenue);
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.hero-fondo {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(7, 9, 13, 0.95) 0%, rgba(7, 9, 13, 0.7) 45%, rgba(7, 9, 13, 0.25) 100%),
    linear-gradient(0deg, var(--fondo) 0%, transparent 35%),
    url("/img/hero.jpg") center 55% / cover;
}

.barra {
  position: relative;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px clamp(16px, 5vw, 64px);
  /* Fondo casi negro semitransparente para que la barra se lea sobre cualquier imagen. */
  background: rgba(7, 9, 13, 0.68);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--borde);
}

.marca {
  display: flex;
  align-items: center;
  gap: 10px;
  font: 700 15px var(--titulos);
  letter-spacing: 0.3em;
}

.marca img {
  width: 28px;
  height: 28px;
}

.marca span,
.enlace-barra {
  color: var(--acento);
}

.enlace-barra {
  font: 600 14px var(--titulos);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  text-decoration: none;
}

.hero-contenido {
  position: relative;
  margin: auto 0;
  padding: 24px clamp(16px, 5vw, 64px) 72px;
  max-width: 720px;
}

.etiqueta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 12px;
  color: var(--acento);
  font: 600 14px var(--titulos);
  letter-spacing: 0.3em;
  text-transform: uppercase;
}

.etiqueta::before {
  content: "";
  width: 32px;
  height: 1px;
  background: var(--acento);
}

h1 {
  margin: 0;
  font: 600 clamp(48px, 10vw, 104px) / 0.92 var(--titulos);
  letter-spacing: 0.14em;
  text-shadow: 0 4px 30px rgba(0, 0, 0, 0.6);
}

.bajada {
  max-width: 560px;
  margin: 20px 0 32px;
  color: #c9d0db;
  font-size: 18px;
}

.descarga {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
}

.boton-principal {
  --bisel: 14px;
  position: relative;
  overflow: hidden;
  min-width: 300px;
  height: 64px;
  padding: 0 40px;
  border: none;
  clip-path: polygon(var(--bisel) 0, 100% 0, 100% calc(100% - var(--bisel)), calc(100% - var(--bisel)) 100%, 0 100%, 0 var(--bisel));
  background: linear-gradient(180deg, #7fd6ff 0%, var(--acento) 45%, var(--acento-oscuro) 100%);
  color: #031019;
  font: 700 22px/1 var(--titulos);
  letter-spacing: 0.16em;
  cursor: pointer;
  transition: filter 0.2s, transform 0.2s;
}

.boton-principal:hover:not(:disabled) {
  filter: brightness(1.08) drop-shadow(0 0 20px rgba(92, 200, 255, 0.5));
}

.boton-principal:active:not(:disabled) {
  transform: translateY(1px);
}

.boton-principal:disabled {
  background: linear-gradient(180deg, #3a4452, #262d37);
  color: var(--tenue);
  cursor: default;
}

.descarga p {
  margin: 0;
  font-size: 14px;
}

.verificacion {
  padding: 12px 14px;
  background: rgba(14, 19, 26, 0.85);
  border: 1px solid var(--borde);
}

.verificacion p {
  margin: 0 0 8px;
}

/* Solo se usa para errores (límite de descargas, verificación fallida): discreto. */
.msj {
  color: #e8a0a0;
  font-size: 13px;
}

.nota-cuenta {
  margin: 28px 0 0;
  color: var(--tenue);
  font-size: 14px;
}

/* ---------- Secciones ---------- */

.seccion {
  max-width: 1120px;
  margin: 0 auto;
  padding: 72px clamp(16px, 5vw, 64px) 24px;
}

h2 {
  margin: 0 0 20px;
  font: 600 32px var(--titulos);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h2::after {
  content: "";
  display: block;
  width: 56px;
  height: 2px;
  margin-top: 8px;
  background: var(--acento);
}

.texto {
  max-width: 760px;
  margin: 0 0 32px;
  color: #c9d0db;
  font-size: 17px;
}

.rasgos {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.rasgos article,
.requisitos article {
  padding: 18px 20px;
  background: var(--panel);
  border: 1px solid var(--borde);
  border-top: 2px solid var(--acento-oscuro);
}

h3 {
  margin: 0 0 6px;
  font: 600 20px var(--titulos);
  letter-spacing: 0.06em;
}

.rasgos p {
  margin: 0;
  color: var(--tenue);
  font-size: 15px;
}

.galeria {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin: 0;
}

.galeria figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--borde);
}

.galeria img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  transition: transform 0.6s;
}

.galeria figure:hover img {
  transform: scale(1.03);
}

.galeria figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 28px 16px 12px;
  background: linear-gradient(0deg, rgba(7, 9, 13, 0.85), transparent);
  color: var(--tenue);
  font: 600 13px var(--titulos);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.galeria figcaption strong {
  color: var(--texto);
  font-size: 22px;
  letter-spacing: 0.24em;
}

.requisitos {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 14px;
}

dl {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 6px 16px;
  margin: 10px 0 0;
}

dt {
  color: var(--tenue);
}

dd {
  margin: 0;
}

.pie-req {
  font-size: 14px;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  max-width: 1120px;
  margin: 56px auto 0;
  padding: 24px clamp(16px, 5vw, 64px) 32px;
  border-top: 1px solid var(--borde);
  color: var(--tenue);
  font-size: 14px;
}

@media (max-width: 900px) {
  .rasgos {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .galeria,
  .rasgos {
    grid-template-columns: 1fr;
  }
  .boton-principal {
    min-width: 0;
    width: 100%;
  }
  .descarga {
    align-items: stretch;
  }
}