/* ==========================================================
   ESTILOS  ·  Miguel Silva
   Dirección: minimalista, claro, tipo Apple.
   Tipografía: Space Grotesk (títulos) + Inter (texto)
   Paleta:  #293241 · #3d5a80 · #98c1d9 · #e0fbfc · #ee6c4d
   ========================================================== */
:root {
  /* --- Paleta base --- */
  --tinta: #293241;          /* navy — texto principal / secciones oscuras */
  --azul: #3d5a80;           /* azul medio — acento principal / enlaces */
  --azul-claro: #98c1d9;     /* azul claro — bordes suaves / detalles */
  --cielo: #e0fbfc;          /* cian claro — fondos tintados */
  --coral: #ee6c4d;          /* coral — llamadas a la acción */
  --coral-oscuro: #e0522f;

  /* --- Neutros derivados --- */
  --fondo: #fbfdfe;          /* fondo general (casi blanco) */
  --superficie: #ffffff;     /* tarjetas */
  --tinta-suave: #55657a;    /* texto secundario */
  --gris: #7f8da0;           /* texto tenue */
  --borde: rgba(41, 50, 65, 0.10);
  --borde-fuerte: rgba(41, 50, 65, 0.16);

  /* --- Forma / sombra --- */
  --radio: 14px;
  --radio-lg: 22px;
  --radio-pill: 980px;
  --sombra-sm: 0 1px 2px rgba(41, 50, 65, 0.06);
  --sombra: 0 10px 30px rgba(41, 50, 65, 0.08);
  --sombra-lg: 0 24px 60px rgba(41, 50, 65, 0.12);
  --ancho: 1040px;
  --ancho-texto: 720px;

  /* Alias heredados (compatibilidad con markup previo) */
  --menta: var(--azul);
  --texto: var(--tinta);
  --tarjeta: var(--superficie);
  --negro: var(--tinta);
}

* { box-sizing: border-box; }
img { max-width: 100%; height: auto; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--tinta);
  background: var(--fondo);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

.contenedor {
  max-width: var(--ancho);
  margin: 0 auto;
  padding: 0 24px;
}

/* ==========================================================
   Cabecera / menú (centrado, translúcido — estilo Apple)
   ========================================================== */
.cabecera {
  position: sticky;
  top: 0;
  z-index: 30;
}
/* Barra negra superior */
.barra-superior {
  background: #0a0a0c;
  color: #fff;
}
.barra-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 38px;
}
.barra-cta {
  color: #dfe7ee;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  text-decoration: none;
  opacity: 0.9;
  white-space: nowrap;
}
.barra-cta:hover { color: var(--cielo); opacity: 1; }

/* Fila del menú (translúcida, clara) */
.cabecera-nav {
  background: rgba(251, 253, 254, 0.82);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  border-bottom: 1px solid var(--borde);
}
.cabecera-inner {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 52px;
}
.marca {
  flex: 0 0 auto;
  color: #fff;
  font-family: "Space Grotesk", sans-serif;
  font-weight: 600;
  font-size: 0.98rem;
  letter-spacing: -0.01em;
  text-decoration: none;
  white-space: nowrap;
}
.marca:hover { color: var(--cielo); }
.nav-izq { flex: 1 1 0; }
/* Nav centrado */
.menu {
  flex: 0 0 auto;
  margin: 0 auto;
  display: flex;
  gap: 4px;
  align-items: center;
}
.nav-derecha { flex: 1 1 0; }   /* balancea la marca para centrar el menú */
.menu a {
  color: var(--tinta-suave);
  text-decoration: none;
  padding: 7px 14px;
  border-radius: var(--radio-pill);
  font-size: 0.88rem;
  font-weight: 500;
  letter-spacing: -0.005em;
  transition: color .18s ease, background .18s ease;
  white-space: nowrap;
}
.menu a:hover { color: var(--tinta); background: rgba(152, 193, 217, 0.18); }
.menu a.activo { color: var(--tinta); font-weight: 600; }

/* Hamburguesa (solo móvil) */
.hamburguesa {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 38px;
  padding: 9px;
  border-radius: 10px;
  cursor: pointer;
}
.hamburguesa span {
  display: block;
  height: 1.5px;
  width: 100%;
  background: var(--tinta);
  border-radius: 2px;
  transition: transform .25s ease, opacity .2s ease;
}

/* ==========================================================
   Contenido / tipografía
   ========================================================== */
.contenido { padding: 72px 24px 96px; position: relative; }

h1, h2, h3, h4 {
  font-family: "Space Grotesk", sans-serif;
  color: var(--tinta);
  line-height: 1.12;
  letter-spacing: -0.02em;
  font-weight: 600;
}
h1 { font-size: clamp(1.95rem, 4.6vw, 3rem); margin: 0 0 16px; }
h2 { font-size: clamp(1.45rem, 3vw, 2rem); margin: 58px 0 18px; }
h3 { font-size: 1.22rem; margin: 0 0 12px; }
p  { margin: 0 0 16px; }
strong { color: var(--tinta); font-weight: 600; }
.lead, .contenido > p:first-of-type { color: var(--tinta-suave); }

/* Ancho de lectura cómodo para texto corrido en páginas internas */
.pagina-investigaciones .contenido > p,
.pagina-aexa-iasp .contenido > p,
.pagina-aess-bolivia .contenido > p,
.pagina-sobre-mí .contenido > p { max-width: var(--ancho-texto); }

/* Eyebrow (antes .etiqueta) — texto de acento estilo Apple */
.etiqueta {
  display: inline-block;
  color: var(--coral);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin: 0 0 14px;
}

a { color: var(--azul); text-decoration: none; }
a:hover { color: var(--coral); }
.contenido p a { text-decoration: underline; text-decoration-color: rgba(61,90,128,0.35); text-underline-offset: 3px; }

/* ==========================================================
   Hero (Inicio) — centrado
   ========================================================== */
.hero { text-align: center; max-width: 860px; margin: 0 auto; }
.hero h1 {
  background: none;
  color: var(--tinta);
}
.hero .hero-sub {
  font-size: clamp(1.05rem, 2.2vw, 1.3rem);
  color: var(--tinta-suave);
  max-width: 640px;
  margin: 0 auto 26px;
  line-height: 1.5;
}
.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 20px;
}
.hero-foto {
  margin: 46px auto 0;
  max-width: 560px;
  border-radius: var(--radio-lg);
  overflow: hidden;
  border: 1px solid var(--borde);
  box-shadow: var(--sombra-lg);
  background: var(--superficie);
}
.hero-foto img { display: block; width: 100%; }

/* Datos rápidos (chips minimalistas) */
.datos-rapidos {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin: 34px auto 0;
  max-width: 720px;
}
.datos-rapidos span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--radio-pill);
  background: var(--cielo);
  color: var(--azul);
  font-size: 0.88rem;
  font-weight: 500;
}
.datos-rapidos span::before {
  content: "";
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--coral);
}

/* ==========================================================
   Botones
   ========================================================== */
.boton {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--coral);
  color: #fff;
  text-decoration: none;
  padding: 13px 28px;
  border-radius: var(--radio-pill);
  font-family: "Inter", sans-serif;
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: -0.01em;
  transition: transform .12s ease, background .2s ease, box-shadow .2s ease;
  box-shadow: var(--sombra-sm);
}
.boton:hover { background: var(--coral-oscuro); color: #fff; transform: translateY(-1px); box-shadow: var(--sombra); }
.boton:active { transform: translateY(0); }

/* Azul (antes menta) */
.boton.menta, .boton.menta-solido, .boton.azul {
  background: var(--azul);
  color: #fff;
}
.boton.menta:hover, .boton.menta-solido:hover, .boton.azul:hover { background: #32496a; color: #fff; }

/* Contorno */
.boton.ghost, .boton.secundario {
  background: transparent;
  color: var(--tinta);
  border: 1px solid var(--borde-fuerte);
  box-shadow: none;
}
.boton.ghost:hover, .boton.secundario:hover { background: rgba(152,193,217,0.16); color: var(--tinta); }

/* Botón de texto con chevron */
.boton-texto {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--azul);
  font-weight: 600;
  text-decoration: none;
  font-size: 1rem;
}
.boton-texto::after { content: "›"; font-size: 1.2em; line-height: 0; transition: transform .18s ease; }
.boton-texto:hover { color: var(--coral); }
.boton-texto:hover::after { transform: translateX(3px); }

/* ==========================================================
   Tarjetas
   ========================================================== */
.tarjeta {
  background: var(--superficie);
  border: 1px solid var(--borde);
  border-radius: var(--radio);
  padding: 28px 30px;
  margin-bottom: 20px;
  box-shadow: var(--sombra-sm);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.tarjeta:hover { box-shadow: var(--sombra); transform: translateY(-2px); border-color: var(--borde-fuerte); }
.tarjeta h2, .tarjeta h3 { margin-top: 0; color: var(--tinta); }
.tarjeta h2 { font-size: 1.4rem; margin-bottom: 14px; }

/* Listas con viñeta coral */
.tarjeta ul { list-style: none; padding-left: 2px; margin: 0; }
.tarjeta ul li { position: relative; padding-left: 22px; margin-bottom: 9px; }
.tarjeta ul li::before {
  content: "";
  position: absolute;
  left: 2px; top: 0.62em;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--coral);
}
/* Listas numeradas (publicaciones) */
.tarjeta ol { padding-left: 4px; margin: 0; counter-reset: item; list-style: none; }
.tarjeta ol li { position: relative; padding-left: 34px; margin-bottom: 14px; counter-increment: item; }
.tarjeta ol li::before {
  content: counter(item);
  position: absolute;
  left: 0; top: 0.05em;
  width: 24px; height: 24px;
  display: inline-flex; align-items: center; justify-content: center;
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.78rem; font-weight: 600;
  color: var(--azul);
  background: var(--cielo);
  border-radius: 50%;
}

/* ==========================================================
   Rejilla de secciones (para páginas internas)
   ========================================================== */
.rejilla {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
  margin-top: 8px;
}
.rejilla .tarjeta { margin-bottom: 0; height: 100%; }

/* ==========================================================
   Figura (carta) + fila
   ========================================================== */
.figura {
  margin: 0;
  background: var(--superficie);
  border: 1px solid var(--borde);
  border-radius: var(--radio);
  padding: 12px;
  max-width: 360px;
  box-shadow: var(--sombra-sm);
}
.figura img { border-radius: 10px; display: block; }
.figura figcaption { color: var(--gris); font-size: 0.85rem; text-align: center; margin-top: 10px; }
.carta-fila { display: flex; gap: 28px; align-items: center; }
.carta-fila .figura { flex: 0 0 auto; }
.carta-texto { flex: 1; }
.carta-texto p:last-child { margin-bottom: 0; }

/* ==========================================================
   Visor de PDF
   ========================================================== */
.pdf-visor {
  width: 100%;
  height: 640px;
  margin-top: 18px;
  border: 1px solid var(--borde);
  border-radius: var(--radio);
  background: #fff;
  box-shadow: var(--sombra);
}

/* ==========================================================
   Colaboradores (logotipos)
   ========================================================== */
.colaboradores {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 16px;
}
.logo {
  flex: 0 1 calc(50% - 9px);
  background: var(--superficie);
  border: 1px solid var(--borde);
  border-radius: var(--radio);
  height: 120px;
  display: flex; align-items: center; justify-content: center;
  padding: 22px;
  transition: transform .2s ease, box-shadow .2s ease;
}
.logo:hover { transform: translateY(-3px); box-shadow: var(--sombra); }
.logo img { max-height: 100%; width: auto; object-fit: contain; }
.logo span { color: var(--tinta-suave); font-weight: 600; text-align: center; }

/* ==========================================================
   Donaciones (columnas en movimiento) — sin uso, conservado
   ========================================================== */
.donaciones { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 12px; }
.col-titulo { margin: 0 0 8px; text-align: center; font-size: 0.78rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--gris); }
.col-ventana {
  height: 230px; overflow: hidden; position: relative;
  background: var(--superficie); border: 1px solid var(--borde); border-radius: var(--radio);
  -webkit-mask-image: linear-gradient(transparent, #000 12%, #000 88%, transparent);
          mask-image: linear-gradient(transparent, #000 12%, #000 88%, transparent);
}
.col-ventana:hover .track { animation-play-state: paused; }
.track { list-style: none; margin: 0; padding: 6px 0; animation-name: subir; animation-timing-function: linear; animation-iteration-count: infinite; }
.track li { padding: 6px 14px; font-size: 0.92rem; text-align: center; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.track-1 { animation-duration: 34s; } .track-1 li { color: var(--azul); }
.track-2 { animation-duration: 24s; } .track-2 li { color: var(--coral); }
.track-3 li { color: var(--tinta); font-weight: 700; }
.track.estatica { animation: none; display: flex; flex-direction: column; justify-content: center; height: 100%; }
@keyframes subir { from { transform: translateY(0); } to { transform: translateY(-50%); } }

/* ==========================================================
   Galería (slideshow)
   ========================================================== */
.galeria {
  position: relative;
  width: 100%;
  max-width: 640px;
  height: clamp(320px, 62vw, 480px);
  margin: 20px auto 0;
  border-radius: var(--radio-lg);
  overflow: hidden;
  border: 1px solid var(--borde);
  box-shadow: var(--sombra-lg);
  background: var(--cielo);
}
.galeria img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: contain;
  opacity: 0;
  animation-name: galeriaFade;
  animation-duration: var(--dur, 35s);
  animation-timing-function: linear;
  animation-iteration-count: infinite;
}
@keyframes galeriaFade {
  0% { opacity: 0; } 1.5% { opacity: 1; } 9% { opacity: 1; } 10.5% { opacity: 0; } 100% { opacity: 0; }
}
.galeria:hover img { animation-play-state: paused; }

/* ==========================================================
   Imágenes de contenido (figuras, cuadrículas, perfil, banner)
   ========================================================== */
.figura-cap {
  margin: 22px 0;
  border-radius: var(--radio);
  overflow: hidden;
  border: 1px solid var(--borde);
  box-shadow: var(--sombra-sm);
  background: var(--superficie);
}
.figura-cap img { display: block; width: 100%; }
.figura-cap figcaption { padding: 11px 15px; font-size: 0.85rem; color: var(--tinta-suave); }

/* Cuadrícula de fotos */
.foto-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  margin: 22px 0;
}
.foto-grid figure {
  margin: 0;
  border-radius: var(--radio);
  overflow: hidden;
  border: 1px solid var(--borde);
  background: var(--superficie);
  box-shadow: var(--sombra-sm);
}
.foto-grid img {
  display: block; width: 100%; height: 210px;
  object-fit: cover;
  transition: transform .45s ease;
}
.foto-grid figure:hover img { transform: scale(1.05); }
.foto-grid figcaption { padding: 9px 13px; font-size: 0.82rem; color: var(--tinta-suave); }

/* Proyecto con imagen (media par) */
.proyecto-media {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
  margin: 18px 0 6px;
}
.proyecto-media img {
  width: 100%; height: 260px;
  object-fit: cover;
  border-radius: var(--radio);
  border: 1px solid var(--borde);
  box-shadow: var(--sombra-sm);
}

/* Perfil (Sobre mí) */
.perfil { display: flex; gap: 28px; align-items: center; margin-bottom: 6px; }
.perfil img {
  width: 190px; height: 190px; flex: 0 0 auto;
  object-fit: cover;
  border-radius: 22px;
  border: 1px solid var(--borde);
  box-shadow: var(--sombra);
}
.perfil .perfil-texto { flex: 1; }
@media (max-width: 600px) { .perfil { flex-direction: column; text-align: center; } }

/* Banner de logo (AESS) */
.banner-logo {
  display: flex; justify-content: center; align-items: center;
  padding: 34px;
  background: var(--cielo);
  border-radius: var(--radio-lg);
  border: 1px solid var(--borde);
  margin: 6px 0 26px;
}
.banner-logo img { max-width: 340px; width: 100%; height: auto; }

/* Logo de proyecto en línea */
.logo-proyecto { height: 64px; width: auto; margin-bottom: 10px; }

/* ==========================================================
   Pie
   ========================================================== */
.pie {
  border-top: 1px solid var(--borde);
  background: var(--cielo);
  color: var(--tinta-suave);
  font-size: 0.9rem;
  padding: 40px 0;
  text-align: center;
}
.pie a { color: var(--tinta-suave); text-decoration: none; }
.pie a:hover { color: var(--coral); }
.pie-links { display: flex; gap: 22px; justify-content: center; margin-bottom: 12px; flex-wrap: wrap; }

/* ==========================================================
   Responsive
   ========================================================== */
@media (max-width: 820px) {
  .contenido { padding: 52px 22px 72px; }
  .hamburguesa { display: inline-flex; margin-left: auto; }
  .nav-izq, .nav-derecha { display: none; }
  .menu {
    flex-basis: 100%;
    display: none;
    flex-direction: column;
    gap: 2px;
    padding: 6px 0 10px;
    margin: 0;
  }
  .menu a { width: 100%; text-align: center; padding: 13px 14px; font-size: 1rem; }
  .menu-toggle:checked ~ .menu { display: flex; }
  .menu-toggle:checked ~ .hamburguesa span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
  .menu-toggle:checked ~ .hamburguesa span:nth-child(2) { opacity: 0; }
  .menu-toggle:checked ~ .hamburguesa span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }
  .cabecera-inner { flex-wrap: wrap; }

  .carta-fila { flex-direction: column; align-items: stretch; }
  .figura { max-width: none; }
}
@media (max-width: 560px) {
  body { font-size: 16px; }
  .logo { flex: 0 1 100%; }
  .hero-cta { flex-direction: column; }
  .hero-cta .boton { width: 100%; justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  .galeria img, .track { animation: none; }
  html { scroll-behavior: auto; }
}