/* ============================================================
   INTERFAZ — biota cuerpo arte código
   Paleta heredada de la experiencia AR (ar.html)
   ============================================================ */

:root {
  --fondo:        #D4DDD1;  /* verde salvia */
  --fondo-alt:    #C7D2C4;  /* salvia un tono más oscuro */
  --tinta:        #1E3A3A;  /* verde petróleo */
  --tinta-suave:  #2A4A4A;
  --acento:       #C94F4F;  /* rojo */
  --acento-osc:   #A93F3F;
  --claro:        #D4DDD1;
  --mono: 'Source Code Pro', 'Courier New', monospace;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--mono);
  background: var(--fondo);
  color: var(--tinta);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

/* ---------- Utilidades ---------- */

.contenedor {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.seccion {
  padding: 90px 0;
  border-top: 1px solid rgba(30, 58, 58, 0.18);
}

.seccion-titulo {
  font-size: clamp(1.4rem, 5vw, 2.2rem);
  font-weight: 900;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.seccion-nota {
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--tinta-suave);
  opacity: 0.75;
  margin-bottom: 40px;
}

/* ---------- Barra superior ---------- */

.barra {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(212, 221, 209, 0.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(30, 58, 58, 0.18);
}

.barra .contenedor {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 64px;
  flex-wrap: wrap;
  padding-top: 10px;
  padding-bottom: 10px;
}

.marca {
  font-weight: 900;
  font-size: 1rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  text-decoration: none;
}

.menu {
  display: flex;
  align-items: center;
  gap: 22px;
  flex-wrap: wrap;
}

.menu a {
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 2px solid transparent;
  transition: border-color 0.25s ease;
}

.menu a:hover {
  border-bottom-color: var(--acento);
}

/* ---------- Botones ---------- */

.boton {
  display: inline-block;
  background: var(--tinta);
  color: var(--claro);
  border: none;
  padding: 15px 34px;
  font-family: var(--mono);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.3s ease;
  -webkit-tap-highlight-color: transparent;
}

.boton:hover {
  background: var(--tinta-suave);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(30, 58, 58, 0.35);
}

.boton:active {
  transform: scale(0.97);
}

.boton-ar {
  background: var(--acento);
}

.boton-ar:hover {
  background: var(--acento-osc);
  box-shadow: 0 6px 20px rgba(201, 79, 79, 0.45);
}

.boton-chico {
  padding: 11px 22px;
  font-size: 0.7rem;
  letter-spacing: 0.18em;
}

/* ---------- Portada con visor 3D ---------- */

.portada {
  position: relative;
  overflow: hidden;
  min-height: min(86vh, 780px);
  display: flex;
  align-items: center;
  padding: 90px 0 80px;
  text-align: center;
}

/* Lienzo de three.js: ocupa toda la portada, detrás del título */
#visor3d {
  position: absolute;
  inset: 0;
  z-index: 0;
  touch-action: pan-y;
  cursor: grab;
}

#visor3d:active {
  cursor: grabbing;
}

#visor3d canvas {
  display: block;
  width: 100%;
  height: 100%;
}

/* Velo doble: una capa suave sobre todo (deja ver los modelos como fantasmas)
   y un halo más denso donde va el texto pequeño, para que siempre se lea. */
.portada-velo {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(ellipse 46% 32% at 50% 62%,
      rgba(212, 221, 209, 0.94) 0%,
      rgba(212, 221, 209, 0.72) 55%,
      rgba(212, 221, 209, 0) 85%),
    linear-gradient(rgba(212, 221, 209, 0.5), rgba(212, 221, 209, 0.5));
}

/* Halo sutil para despegar el texto de los modelos */
.portada-contenido .antetitulo,
.portada-contenido h1,
.portada-contenido .subtitulo,
.portada-contenido .entrada {
  text-shadow:
    0 0 14px rgba(212, 221, 209, 0.95),
    0 0 32px rgba(212, 221, 209, 0.8);
}

#visorAviso {
  position: absolute;
  bottom: 22px;
  left: 0;
  right: 0;
  z-index: 2;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--tinta-suave);
  opacity: 0.6;
  pointer-events: none;
}

/* El texto flota encima, pero deja pasar el arrastre al lienzo */
.portada-contenido {
  position: relative;
  z-index: 3;
  pointer-events: none;
}

.portada-contenido a,
.portada-contenido button {
  pointer-events: auto;
}

.portada-pista {
  margin-top: 34px;
  font-size: 0.64rem;
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--tinta-suave);
  opacity: 0.55;
}

.portada .antetitulo {
  font-size: clamp(0.7rem, 3vw, 0.9rem);
  font-weight: 500;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.portada h1 {
  font-size: clamp(2.6rem, 13vw, 6.5rem);
  font-weight: 900;
  letter-spacing: 0.14em;
  line-height: 0.9;
  text-transform: uppercase;
  margin-bottom: 1.4rem;
}

.portada .subtitulo {
  font-size: clamp(0.85rem, 4vw, 1.25rem);
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 2rem;
}

.portada .entrada {
  max-width: 48ch;
  margin: 0 auto 2.6rem;
  font-size: clamp(0.9rem, 3vw, 1.05rem);
  line-height: 1.75;
  color: var(--tinta-suave);
}

.portada-acciones {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- Texto del colectivo ---------- */

.texto p {
  margin-bottom: 1.7rem;
  font-size: clamp(0.92rem, 2.4vw, 1.05rem);
  line-height: 1.85;
  color: var(--tinta-suave);
  max-width: 62ch;
}

.texto strong {
  color: var(--tinta);
  font-weight: 700;
}

/* Primer párrafo: entrada destacada */
.entrada-texto {
  font-size: clamp(1.05rem, 3vw, 1.3rem) !important;
  font-weight: 600;
  line-height: 1.7 !important;
  color: var(--tinta) !important;
  max-width: 54ch !important;
  margin-bottom: 2rem !important;
}

/* Último párrafo: cierre */
.cierre-texto {
  border-top: 1px solid rgba(30, 58, 58, 0.25);
  padding-top: 1.7rem;
  font-weight: 600;
  color: var(--tinta) !important;
}

/* Subtítulos que parten el texto largo en bloques */
.subtema {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--acento);
  margin: 2.8rem 0 1rem;
}

.texto-corto {
  max-width: 62ch;
  font-size: clamp(0.9rem, 2.4vw, 1rem);
  line-height: 1.8;
  color: var(--tinta-suave);
  margin-bottom: 8px;
}

.preguntas {
  border-left: 4px solid var(--acento);
  padding: 8px 0 8px 26px;
  margin: 2.2rem 0 2.6rem;
  list-style: none;
}

.preguntas li {
  font-size: clamp(0.92rem, 2.8vw, 1.1rem);
  font-weight: 600;
  line-height: 1.6;
  color: var(--tinta);
  margin-bottom: 1.1rem;
  max-width: 56ch;
}

.preguntas li:last-child {
  margin-bottom: 0;
}

/* ---------- Datos / fichas ---------- */

.datos {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 18px;
  margin-top: 50px;
}

.dato {
  background: var(--fondo-alt);
  padding: 24px;
  border-top: 3px solid var(--tinta);
}

.dato h3 {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.dato p {
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--tinta-suave);
}

/* ---------- Noticias ---------- */

.noticias {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
}

.noticia {
  background: var(--fondo-alt);
  display: flex;
  flex-direction: column;
}

.noticia-imagen {
  border: none;
  background: none;
  padding: 0;
  margin: 0;
  cursor: zoom-in;
  display: block;
  width: 100%;
  overflow: hidden;
  -webkit-tap-highlight-color: transparent;
}

.noticia-imagen img {
  width: 100%;
  height: auto;
  transition: transform 0.4s ease;
}

.noticia-imagen:hover img {
  transform: scale(1.03);
}

.noticia-cuerpo {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

.noticia .fecha {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--acento);
}

.noticia h3 {
  font-size: 1.08rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1.35;
}

.noticia p {
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--tinta-suave);
}

.noticia .meta {
  font-size: 0.78rem;
  line-height: 1.6;
  letter-spacing: 0.08em;
  margin-top: auto;
  padding-top: 8px;
  border-top: 1px solid rgba(30, 58, 58, 0.2);
}

/* ---------- Lista de modelos ---------- */

.lista-modelos {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px;
  margin-top: 26px;
  list-style: none;
}

.lista-modelos a {
  display: block;
  padding: 16px 18px;
  line-height: 1.55;
  background: var(--fondo-alt);
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  border-left: 3px solid var(--acento);
  transition: all 0.25s ease;
}

.lista-modelos a:hover {
  background: var(--tinta);
  color: var(--claro);
}

/* ---------- Llamada a la experiencia AR ---------- */

.llamada-ar {
  background: var(--tinta);
  color: var(--claro);
  text-align: center;
  padding: 80px 0;
}

.llamada-ar h2 {
  font-size: clamp(1.3rem, 5vw, 2rem);
  font-weight: 900;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.llamada-ar p {
  max-width: 46ch;
  margin: 0 auto 30px;
  font-size: 0.95rem;
  line-height: 1.8;
  opacity: 0.88;
}

.llamada-ar .boton {
  background: var(--acento);
  color: var(--claro);
}

.llamada-ar .boton:hover {
  background: var(--acento-osc);
}

/* ---------- Pie ---------- */

.pie {
  background: var(--fondo-alt);
  padding: 56px 0 40px;
  border-top: 1px solid rgba(30, 58, 58, 0.2);
}

.pie-rejilla {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 30px;
  margin-bottom: 34px;
}

.pie h4 {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.pie p,
.pie a {
  font-size: 0.85rem;
  line-height: 1.8;
  color: var(--tinta-suave);
  text-decoration: none;
}

.pie a:hover {
  color: var(--acento);
}

.pie ul {
  list-style: none;
}

.pie li {
  margin-bottom: 9px;
}

.pie-final {
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  text-align: center;
  color: var(--tinta-suave);
  opacity: 0.7;
  padding-top: 22px;
  border-top: 1px solid rgba(30, 58, 58, 0.2);
}

/* ---------- Visor de imagen a pantalla completa ---------- */

#lightbox {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(30, 58, 58, 0.95);
  backdrop-filter: blur(8px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

#lightbox.abierto {
  display: flex;
}

#lightbox img {
  max-width: 92vw;
  max-height: 88vh;
  width: auto;
  border: 3px solid var(--claro);
  box-shadow: 0 10px 50px rgba(0, 0, 0, 0.6);
}

#cerrarLightbox {
  position: fixed;
  top: 18px;
  right: 18px;
  width: 50px;
  height: 50px;
  background: var(--acento);
  color: var(--claro);
  border: none;
  font-size: 22px;
  font-weight: bold;
  cursor: pointer;
  transition: transform 0.25s ease;
  -webkit-tap-highlight-color: transparent;
}

#cerrarLightbox:hover {
  transform: scale(1.1);
  background: var(--acento-osc);
}

/* ---------- Responsivo ---------- */

@media (max-width: 640px) {
  .seccion {
    padding: 64px 0;
  }

  .portada {
    min-height: 78vh;
    padding: 60px 0 50px;
  }

  .portada-velo {
    background:
      radial-gradient(ellipse 78% 34% at 50% 60%,
        rgba(212, 221, 209, 0.95) 0%,
        rgba(212, 221, 209, 0.78) 55%,
        rgba(212, 221, 209, 0) 88%),
      linear-gradient(rgba(212, 221, 209, 0.55), rgba(212, 221, 209, 0.55));
  }

  .portada-pista {
    margin-top: 26px;
  }

  .barra .contenedor {
    justify-content: center;
    text-align: center;
  }

  .menu {
    gap: 14px;
    justify-content: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  * {
    transition: none !important;
    animation: none !important;
  }
}