/* ============================================================
   Grupo de Investigación — Física del Estado Sólido
   Hoja de estilos compartida
   Paleta: azul profundo (índigo) + acento cian cristalino
   ============================================================ */

/* ---------- 1. Tokens de diseño (variables) ---------- */
:root {
  /* Colores de marca */
  --azul-900: #0b1533;
  --azul-800: #12224f;
  --azul-700: #1b3a8b;
  --azul-600: #2a52be;
  --azul-500: #3b6be0;
  --cian-400: #38d0e6;
  --cian-300: #7ee3f0;

  /* Neutros */
  --tinta: #0e1524;
  --gris-700: #3a4356;
  --gris-500: #6b7488;
  --gris-300: #c7cdd9;
  --gris-100: #eef1f6;
  --gris-50:  #f7f9fc;
  --blanco:   #ffffff;

  /* Semánticos */
  --fondo: var(--gris-50);
  --superficie: var(--blanco);
  --borde: #e2e7f0;
  --texto: var(--tinta);
  --texto-suave: var(--gris-500);
  --primario: var(--azul-600);
  --acento: var(--cian-400);

  /* Tipografía */
  --fuente-titulo: "Spectral", Georgia, "Times New Roman", serif;
  --fuente-texto: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  /* Medidas */
  --ancho-max: 1180px;
  --radio: 14px;
  --radio-sm: 8px;
  --sombra: 0 4px 24px rgba(11, 21, 51, 0.08);
  --sombra-fuerte: 0 14px 40px rgba(11, 21, 51, 0.16);
  --transicion: 200ms ease;
}

/* ---------- 2. Reset ligero ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body {
  margin: 0;
  font-family: var(--fuente-texto);
  color: var(--texto);
  background: var(--fondo);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--primario); text-decoration: none; transition: color var(--transicion); }
a:hover { color: var(--azul-700); }
h1, h2, h3, h4 { font-family: var(--fuente-titulo); line-height: 1.2; color: var(--azul-900); font-weight: 600; }
ul { margin: 0; }

/* ---------- 3. Utilidades de layout ---------- */
.contenedor { width: 100%; max-width: var(--ancho-max); margin-inline: auto; padding-inline: 24px; }
.seccion { padding-block: 72px; }
.seccion--alt { background: var(--superficie); }
.centro { text-align: center; }
.oculto { display: none !important; }

.eyebrow {
  display: inline-block;
  font-family: var(--fuente-texto);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primario);
  margin-bottom: 12px;
}
.seccion__titulo { font-size: clamp(1.7rem, 3.5vw, 2.5rem); margin: 0 0 16px; }
.seccion__intro { max-width: 720px; color: var(--gris-700); font-size: 1.05rem; }
.centro .seccion__intro { margin-inline: auto; }

/* ---------- 4. Botones ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 22px; border-radius: 999px;
  font-weight: 600; font-size: 0.95rem;
  cursor: pointer; border: 1.5px solid transparent;
  transition: transform var(--transicion), box-shadow var(--transicion), background var(--transicion);
}
.btn--primario { background: var(--primario); color: #fff; }
.btn--primario:hover { background: var(--azul-700); color: #fff; transform: translateY(-2px); box-shadow: var(--sombra-fuerte); }
.btn--fantasma { background: transparent; color: #fff; border-color: rgba(255,255,255,0.6); }
.btn--fantasma:hover { background: rgba(255,255,255,0.12); color: #fff; }
.btn--claro { background: var(--gris-100); color: var(--azul-800); }
.btn--claro:hover { background: var(--gris-300); color: var(--azul-900); }

/* ---------- 5. Cabecera / navegación ---------- */
.cabecera {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.9);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--borde);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.marca { display: flex; align-items: center; gap: 12px; font-family: var(--fuente-titulo); font-weight: 700; color: var(--azul-900); font-size: 1.05rem; flex-shrink: 0; }
.marca__logo {
  width: 40px; height: 40px; border-radius: 10px; flex: none;
  background: linear-gradient(135deg, var(--azul-700), var(--cian-400));
  display: grid; place-items: center; color: #fff; font-weight: 700;
  box-shadow: var(--sombra);
}
.marca small { display: block; font-family: var(--fuente-texto); font-weight: 500; font-size: 0.72rem; color: var(--texto-suave); letter-spacing: 0.02em; }
.marca__img { height: 44px; width: auto; max-width: none; flex: none; flex-shrink: 0; }
.marca__sub { font-family: var(--fuente-texto); font-weight: 600; font-size: 0.8rem; color: var(--texto-suave); letter-spacing: 0.01em; line-height: 1.2; }
@media (max-width: 520px) { .marca__sub { display: none; } }
.nav__lang { display: flex; align-items: center; }
.lang-btn {
  font-family: var(--fuente-texto); font-weight: 700; font-size: 0.78rem;
  color: var(--azul-800); background: var(--gris-100); border: 1px solid var(--borde);
  padding: 6px 11px; border-radius: 999px; cursor: pointer; letter-spacing: 0.04em;
  transition: var(--transicion);
}
.lang-btn:hover { background: var(--azul-600); color: #fff; border-color: var(--azul-600); }

/* Fondo "muestra" en la sección Acerca */
.seccion--muestra { position: relative; overflow: hidden; }
.seccion--muestra::before {
  content: ""; position: absolute; inset: 0;
  background: url("../img/muestra.png") no-repeat center center;
  background-size: cover;
  opacity: 0.12; pointer-events: none; z-index: 0;
}
.seccion--muestra > .contenedor { position: relative; z-index: 1; }

/* Sección del director del grupo */
.director__foto { margin: 0; }
.director__foto img { width: 100%; border-radius: var(--radio); box-shadow: var(--sombra); object-fit: cover; }
.director__foto figcaption { margin-top: 14px; font-family: var(--fuente-titulo); font-weight: 700; font-size: 1.1rem; color: var(--azul-900); }
.director__cargo { display: block; font-family: var(--fuente-texto); font-weight: 500; font-size: 0.85rem; color: var(--texto-suave); }
@media (min-width: 761px) { .director__foto { max-width: 380px; } }

.nav__links { display: flex; align-items: center; gap: 4px; list-style: none; margin: 0; padding: 0; }
.nav__links a {
  padding: 8px 12px; border-radius: var(--radio-sm);
  color: var(--gris-700); font-size: 0.9rem; font-weight: 500;
}
.nav__links a:hover { background: var(--gris-100); color: var(--azul-800); }
.nav__links a.activo { color: var(--primario); font-weight: 600; }
.nav__toggle {
  display: none; background: none; border: 0; cursor: pointer;
  width: 44px; height: 44px; border-radius: var(--radio-sm);
}
.nav__toggle span, .nav__toggle span::before, .nav__toggle span::after {
  content: ""; display: block; width: 22px; height: 2px; background: var(--azul-900);
  position: relative; transition: var(--transicion);
}
.nav__toggle span::before { position: absolute; top: -7px; }
.nav__toggle span::after { position: absolute; top: 7px; }

@media (max-width: 940px) {
  .nav__toggle { display: grid; place-items: center; }
  .nav__links {
    position: fixed; inset: 72px 0 auto 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--superficie); border-bottom: 1px solid var(--borde);
    padding: 12px 24px 20px; box-shadow: var(--sombra);
    transform: translateY(-120%); transition: transform 260ms ease; z-index: 90;
  }
  .nav__links.abierto { transform: translateY(0); }
  .nav__links a { padding: 12px 8px; border-radius: 0; border-bottom: 1px solid var(--borde); }
}

/* ---------- 6. Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background: linear-gradient(160deg, rgba(11,21,51,0.86), rgba(18,34,79,0.72)),
              url("../img/up-edificio.jpg");
  background-size: cover;
  background-position: center;
  color: #fff;
}
.hero__leyenda {
  position: absolute; right: 16px; bottom: 12px; z-index: 3;
  font-size: 0.78rem; font-weight: 600; color: rgba(255,255,255,0.9);
  background: rgba(11,21,51,0.5); padding: 5px 12px; border-radius: 999px;
  backdrop-filter: blur(4px); border: 1px solid rgba(255,255,255,0.15);
}
.hero__red {
  position: absolute; inset: 0; opacity: 0.5;
  background-image: radial-gradient(circle, rgba(126,227,240,0.35) 1.5px, transparent 1.6px);
  background-size: 34px 34px;
  mask-image: linear-gradient(180deg, rgba(0,0,0,0.9), transparent 80%);
}
.hero__inner { position: relative; padding-block: 96px; max-width: 880px; }
.hero h1 { color: #fff; font-size: clamp(1.65rem, 3.4vw, 2.5rem); line-height: 1.22; margin: 0 0 20px; text-wrap: balance; }
.hero p { font-size: 1.15rem; color: var(--gris-300); max-width: 640px; margin: 0 0 32px; }
.hero__acciones { display: flex; gap: 14px; flex-wrap: wrap; }
.hero__badge {
  display: inline-flex; align-items: center; gap: 8px; margin-bottom: 22px;
  padding: 6px 14px; border-radius: 999px; font-size: 0.82rem; font-weight: 600;
  background: rgba(126,227,240,0.14); color: var(--cian-300); border: 1px solid rgba(126,227,240,0.3);
}
.punto { width: 8px; height: 8px; border-radius: 50%; background: var(--cian-400); box-shadow: 0 0 0 4px rgba(56,208,230,0.25); }

/* Cabecera de página interior */
.page-hero { background: linear-gradient(160deg, var(--azul-900), var(--azul-800)); color: #fff; position: relative; overflow: hidden; }
.page-hero::after {
  content: ""; position: absolute; inset: 0;
  background-image: radial-gradient(circle, rgba(126,227,240,0.28) 1.4px, transparent 1.5px);
  background-size: 30px 30px; opacity: 0.4;
  mask-image: linear-gradient(120deg, rgba(0,0,0,0.8), transparent 70%);
}
.page-hero__inner { position: relative; padding-block: 64px; }
.page-hero h1 { color: #fff; font-size: clamp(1.9rem, 4vw, 2.9rem); margin: 8px 0 12px; }
.page-hero p { color: var(--gris-300); max-width: 640px; margin: 0; font-size: 1.05rem; }
.migas { font-size: 0.85rem; color: var(--cian-300); }
.migas a { color: var(--cian-300); }

/* ---------- 7. Rejillas y tarjetas ---------- */
.rejilla { display: grid; gap: 24px; }
.rejilla--2 { grid-template-columns: repeat(2, 1fr); }
.rejilla--3 { grid-template-columns: repeat(3, 1fr); }
.rejilla--4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { .rejilla--3, .rejilla--4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .rejilla--2, .rejilla--3, .rejilla--4 { grid-template-columns: 1fr; } }

.tarjeta {
  background: var(--superficie); border: 1px solid var(--borde);
  border-radius: var(--radio); padding: 28px;
  transition: transform var(--transicion), box-shadow var(--transicion), border-color var(--transicion);
}
.tarjeta:hover { transform: translateY(-4px); box-shadow: var(--sombra-fuerte); border-color: var(--azul-500); }
.tarjeta__icono {
  width: 52px; height: 52px; border-radius: 12px; margin-bottom: 18px;
  display: grid; place-items: center; font-size: 1.5rem;
  background: linear-gradient(135deg, rgba(42,82,190,0.12), rgba(56,208,230,0.14));
  color: var(--primario);
}
.tarjeta h3 { margin: 0 0 10px; font-size: 1.2rem; }
.tarjeta p { margin: 0; color: var(--gris-700); font-size: 0.96rem; }
.tarjeta__enlace { display: inline-block; margin-top: 14px; font-weight: 600; font-size: 0.9rem; }

/* ---------- 8. Misión, visión, valores ---------- */
.mvv { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
@media (max-width: 820px) { .mvv { grid-template-columns: 1fr; } }
.mvv__item { background: var(--superficie); border: 1px solid var(--borde); border-radius: var(--radio); padding: 32px; position: relative; }
.mvv__item::before { content: ""; position: absolute; left: 0; top: 24px; bottom: 24px; width: 4px; border-radius: 4px; background: linear-gradient(var(--azul-600), var(--cian-400)); }
.mvv__item h3 { font-size: 1.35rem; margin: 0 0 12px; }
.valores { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.valores li { display: flex; gap: 10px; align-items: flex-start; color: var(--gris-700); }
.valores li::before { content: "◆"; color: var(--acento); font-size: 0.8rem; margin-top: 4px; }

/* ---------- 9. Estadísticas ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
@media (max-width: 700px) { .stats { grid-template-columns: repeat(2, 1fr); } }
.stat { text-align: center; padding: 24px 12px; }
.stat__num { font-family: var(--fuente-titulo); font-size: 2.6rem; font-weight: 700; color: var(--azul-800); line-height: 1; }
.stat__num span { color: var(--acento); }
.stat__label { color: var(--texto-suave); font-size: 0.9rem; margin-top: 6px; }

/* ---------- 10. Integrantes ---------- */
.persona { background: var(--superficie); border: 1px solid var(--borde); border-radius: var(--radio); overflow: hidden; text-align: center; transition: transform var(--transicion), box-shadow var(--transicion); }
.persona:hover { transform: translateY(-4px); box-shadow: var(--sombra-fuerte); }
.persona__foto { aspect-ratio: 1 / 1; background: linear-gradient(135deg, var(--gris-100), var(--gris-300)); display: grid; place-items: center; font-family: var(--fuente-titulo); font-size: 2.4rem; color: var(--azul-700); font-weight: 700; }
.persona__foto img { width: 100%; height: 100%; object-fit: cover; object-position: center top; display: block; }
.persona__links a[href^="mailto:"] { word-break: break-all; }
.persona__cuerpo { padding: 20px; }
.persona__cuerpo h3 { margin: 0 0 4px; font-size: 1.1rem; }
.persona__rol { color: var(--primario); font-weight: 600; font-size: 0.85rem; }
.persona__area { color: var(--texto-suave); font-size: 0.85rem; margin: 8px 0 12px; }
.persona__links { display: flex; justify-content: center; gap: 12px; font-size: 0.8rem; }

/* ---------- 11. Publicaciones ---------- */
.filtros { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 28px; }
.filtro { padding: 8px 16px; border-radius: 999px; border: 1px solid var(--borde); background: var(--superficie); cursor: pointer; font-size: 0.88rem; font-weight: 500; color: var(--gris-700); transition: var(--transicion); }
.filtro:hover { border-color: var(--azul-500); }
.filtro.activo { background: var(--azul-700); color: #fff; border-color: var(--azul-700); }
.pub-lista { list-style: none; padding: 0; margin: 0; display: grid; gap: 16px; }
.pub {
  background: var(--superficie); border: 1px solid var(--borde); border-radius: var(--radio);
  padding: 22px 24px; display: grid; grid-template-columns: 64px 1fr; gap: 20px; align-items: start;
  transition: box-shadow var(--transicion);
}
.pub:hover { box-shadow: var(--sombra); }
.pub__anio { font-family: var(--fuente-titulo); font-weight: 700; font-size: 1.3rem; color: var(--azul-700); text-align: center; padding-top: 2px; }
.pub__titulo { font-weight: 600; color: var(--azul-900); margin: 0 0 4px; font-size: 1.02rem; line-height: 1.45; }
.pub__titulo a { color: inherit; text-decoration: none; border-bottom: 1px solid transparent; }
.pub__titulo a:hover { color: var(--azul-700); border-bottom-color: var(--azul-500); }
.pub__autores { color: var(--gris-700); font-size: 0.9rem; margin: 0 0 6px; line-height: 1.55; }
.pub__autores strong { color: var(--azul-800); }
.pub__meta { font-size: 0.85rem; color: var(--texto-suave); font-style: italic; line-height: 1.6; }
.pub__meta a { color: var(--azul-700); text-decoration: none; font-style: normal; word-break: break-word; }
.pub__meta a:hover { text-decoration: underline; }
.pub__etq { display: inline-block; margin-top: 10px; margin-right: 6px; padding: 3px 10px; border-radius: 999px; background: var(--gris-100); color: var(--azul-700); font-size: 0.72rem; font-weight: 600; font-style: normal; }
@media (max-width: 520px) { .pub { grid-template-columns: 1fr; } .pub__anio { text-align: left; } }

/* ---------- 12. Línea de tiempo (proyectos / noticias) ---------- */
.timeline { position: relative; padding-left: 32px; }
.timeline::before { content: ""; position: absolute; left: 7px; top: 6px; bottom: 6px; width: 2px; background: linear-gradient(var(--azul-500), var(--cian-400)); }
.timeline__item { position: relative; padding-bottom: 34px; }
.timeline__item::before { content: ""; position: absolute; left: -32px; top: 4px; width: 16px; height: 16px; border-radius: 50%; background: var(--superficie); border: 3px solid var(--azul-600); }
.timeline__fecha { font-size: 0.82rem; font-weight: 700; color: var(--primario); text-transform: uppercase; letter-spacing: 0.05em; }
.timeline__item h3 { margin: 4px 0 8px; font-size: 1.15rem; }
.timeline__item p { margin: 0; color: var(--gris-700); }

/* Etiqueta de estado de proyecto */
.estado { display: inline-block; padding: 3px 12px; border-radius: 999px; font-size: 0.74rem; font-weight: 700; margin-left: 8px; }
.estado--activo { background: #e3f8ec; color: #12864a; }
.estado--cerrado { background: var(--gris-100); color: var(--gris-500); }

/* ---------- 13. Infraestructura / recursos ---------- */
.lista-check { list-style: none; padding: 0; margin: 16px 0 0; display: grid; gap: 12px; }
.lista-check li { display: flex; gap: 12px; align-items: flex-start; color: var(--gris-700); }
.lista-check li::before { content: "✓"; flex: none; width: 22px; height: 22px; border-radius: 50%; background: rgba(56,208,230,0.18); color: var(--azul-700); display: grid; place-items: center; font-size: 0.8rem; font-weight: 700; }

/* ---------- 14. Noticias (tarjetas) ---------- */
.noticia { background: var(--superficie); border: 1px solid var(--borde); border-radius: var(--radio); overflow: hidden; display: flex; flex-direction: column; transition: transform var(--transicion), box-shadow var(--transicion); }
.noticia:hover { transform: translateY(-4px); box-shadow: var(--sombra-fuerte); }
.noticia__img { aspect-ratio: 16 / 9; background: linear-gradient(135deg, var(--azul-700), var(--cian-400)); position: relative; }
.noticia__img span { position: absolute; inset: 0; display: grid; place-items: center; color: rgba(255,255,255,0.85); font-size: 2rem; }
.noticia__img--foto img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; display: block; }
.noticia--destacada { border-color: var(--cian-400); }
.noticia__cuerpo { padding: 22px; flex: 1; display: flex; flex-direction: column; }
.noticia__fecha { font-size: 0.78rem; color: var(--texto-suave); font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; }
.noticia__cuerpo h3 { margin: 8px 0 10px; font-size: 1.12rem; }
.noticia__cuerpo p { margin: 0 0 16px; color: var(--gris-700); font-size: 0.94rem; }
.noticia__cuerpo .tarjeta__enlace { margin-top: auto; }

/* ---------- 15. Galería ---------- */
.galeria { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
@media (max-width: 760px) { .galeria { grid-template-columns: repeat(2, 1fr); } }
.galeria__item { position: relative; aspect-ratio: 4 / 3; border-radius: var(--radio-sm); overflow: hidden; cursor: pointer; border: 1px solid var(--borde); background: linear-gradient(135deg, var(--azul-800), var(--cian-400)); }
.galeria__item figcaption { position: absolute; inset: auto 0 0 0; padding: 12px 14px; background: linear-gradient(transparent, rgba(11,21,51,0.85)); color: #fff; font-size: 0.85rem; transform: translateY(10%); opacity: 0; transition: var(--transicion); }
.galeria__item:hover figcaption { transform: translateY(0); opacity: 1; }
.galeria__ph { position: absolute; inset: 0; display: grid; place-items: center; color: rgba(255,255,255,0.75); font-size: 2.2rem; }
.galeria__img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }

/* Lightbox */
.lightbox { position: fixed; inset: 0; background: rgba(11,21,51,0.9); display: none; place-items: center; z-index: 200; padding: 24px; }
.lightbox.abierto { display: grid; }
.lightbox__caja { max-width: 720px; width: 100%; background: var(--superficie); border-radius: var(--radio); overflow: hidden; }
.lightbox__img { aspect-ratio: 16 / 10; background: linear-gradient(135deg, var(--azul-800), var(--cian-400)); display: grid; place-items: center; color: #fff; font-size: 3rem; }
.lightbox__img img { width: 100%; height: 100%; object-fit: cover; }
.lightbox__cap { padding: 18px 22px; color: var(--gris-700); }
.lightbox__cerrar { position: absolute; top: 20px; right: 24px; background: none; border: 0; color: #fff; font-size: 2rem; cursor: pointer; line-height: 1; }

/* ---------- 16. Contacto ---------- */
.contacto-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 40px; }
@media (max-width: 820px) { .contacto-grid { grid-template-columns: 1fr; } }
.info-lista { list-style: none; padding: 0; margin: 24px 0 0; display: grid; gap: 20px; }
.info-lista li { display: flex; gap: 14px; align-items: flex-start; }
.info-lista .ic { flex: none; width: 42px; height: 42px; border-radius: 10px; display: grid; place-items: center; background: rgba(42,82,190,0.1); color: var(--primario); font-size: 1.1rem; }
.info-lista strong { display: block; color: var(--azul-900); }
.info-lista span { color: var(--gris-700); font-size: 0.92rem; }

.form { background: var(--superficie); border: 1px solid var(--borde); border-radius: var(--radio); padding: 32px; }
.campo { margin-bottom: 18px; }
.campo label { display: block; font-weight: 600; font-size: 0.88rem; margin-bottom: 6px; color: var(--azul-900); }
.campo input, .campo textarea, .campo select {
  width: 100%; padding: 12px 14px; border: 1px solid var(--borde); border-radius: var(--radio-sm);
  font: inherit; color: var(--texto); background: var(--gris-50); transition: var(--transicion);
}
.campo input:focus, .campo textarea:focus, .campo select:focus { outline: none; border-color: var(--azul-500); box-shadow: 0 0 0 3px rgba(59,107,224,0.15); background: #fff; }
.campo textarea { resize: vertical; min-height: 120px; }
.mapa { margin-top: 24px; aspect-ratio: 16 / 7; border-radius: var(--radio); border: 1px solid var(--borde); background: linear-gradient(135deg, var(--gris-100), var(--gris-300)); display: grid; place-items: center; color: var(--gris-500); font-size: 0.9rem; }

/* ---------- 17. Franja CTA ---------- */
.cta {
  background: linear-gradient(120deg, var(--azul-800), var(--azul-600));
  color: #fff; border-radius: var(--radio); padding: 48px; text-align: center;
  position: relative; overflow: hidden;
}
.cta h2 { color: #fff; font-size: 1.8rem; margin: 0 0 12px; }
.cta p { color: var(--gris-300); max-width: 560px; margin: 0 auto 24px; }

/* ---------- 18. Pie ---------- */
.pie { background: var(--azul-900); color: var(--gris-300); padding-block: 56px 28px; margin-top: 0; }
.pie a { color: var(--gris-300); }
.pie a:hover { color: var(--cian-300); }
.pie__grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 32px; }
@media (max-width: 820px) { .pie__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .pie__grid { grid-template-columns: 1fr; } }
.pie h4 { color: #fff; font-size: 0.95rem; margin: 0 0 14px; text-transform: uppercase; letter-spacing: 0.06em; font-family: var(--fuente-texto); }
.pie ul { list-style: none; padding: 0; display: grid; gap: 8px; font-size: 0.9rem; }
.pie__marca { display: flex; align-items: center; gap: 12px; color: #fff; font-family: var(--fuente-titulo); font-weight: 700; margin-bottom: 14px; }
.pie__logo { height: 40px; width: auto; flex: none; background: #fff; padding: 4px 7px; border-radius: 8px; }
.pie__legal { border-top: 1px solid rgba(255,255,255,0.12); margin-top: 40px; padding-top: 22px; font-size: 0.82rem; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }

/* ---------- 19. Animación de aparición ---------- */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity 600ms ease, transform 600ms ease; }
.reveal.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; transition: none; }
}


/* ===== Modo embebido: cuando la web vive dentro del iframe del sitio principal,
   la cabecera se reduce a una barra de submenú discreta para no competir con el menú anfitrión. ===== */
html.embebido .cabecera { position: static; background: var(--gris-100); backdrop-filter: none; }
html.embebido .marca { display: none; }
html.embebido .nav { height: 46px; justify-content: center; gap: 8px; }
html.embebido .nav__links { gap: 2px; }
html.embebido .nav__links a { font-size: 0.83rem; padding: 5px 10px; color: var(--gris-700); }
html.embebido .nav__links a:hover { background: transparent; color: var(--azul-800); text-decoration: underline; text-underline-offset: 4px; }
html.embebido .lang-btn { font-size: 0.75rem; padding: 3px 10px; }