:root{
  /* Paleta base para asegurar consistencia cromática */
  --color-text-titulos: #ffffff;
  --color-texto: rgba(255, 255, 255, 0.9);
  --color-acento: #E6E4C6;
  --color-acento-secundario: #7ad7d0;
  --color-fondo: #0E3A47;
  --color-fondo-tarjeta: rgba(255, 255, 255, 0.15);
  --color-fondo-oscuro: rgba(5, 25, 31, 0.6);
}

body{
  /* Disposición general en dos columnas con cabecera superior */
  background-color: var(--color-fondo);
  margin: 0;
  font-family: 'Trebuchet MS', 'Lucida Sans Unicode', 'Lucida Grande', 'Lucida Sans', Arial, sans-serif;
  display: grid;
  grid-template-columns: minmax(260px, 320px) 1fr;
  grid-template-areas: 
    "header header"
    "aside main"
    "footer footer";
  min-height: 100vh;
  color: var(--color-texto);
}

h1, h2, h3, h4, h5, h6{
  /* Titulares en blanco para contrastar sobre el fondo */
  color: var(--color-text-titulos);
  margin-top: 0;
}

h1{
  font-size: clamp(2.4rem, 4vw, 3.4rem);
}

h2{
  font-size: clamp(1.8rem, 3.2vw, 2.4rem);
}

h3{
  font-size: clamp(1.2rem, 2.5vw, 1.6rem);
}

p, span, li{
  color: var(--color-texto);
}

/* --- Cabecera con navegación y hero --- */
header{
  grid-area: header;
  background-image: linear-gradient(var(--color-fondo-oscuro), var(--color-fondo-oscuro)), url("./img/fondo.png");
  background-size: cover;
  background-position: center;
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding: 24px 40px 40px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.25);
}

.navegacion{
  /* Barra de navegación principal */
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.navegacion__marca{
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.navegacion__sigla{
  font-size: 1.4rem;
  letter-spacing: 4px;
}

.navegacion__programa{
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--color-acento);
}

.navegacion__links{
  display: flex;
  list-style: none;
  gap: 24px;
  margin: 0;
  padding: 0;
}

.navegacion__links a{
  color: var(--color-text-titulos);
  text-decoration: none;
  font-weight: 600;
  letter-spacing: 1px;
  transition: color 0.2s ease;
}

.navegacion__links a:hover,
.navegacion__links a:focus{
  color: var(--color-acento);
}

.hero{
  /* Bloque destacado con mensaje principal */
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
  background-color: rgba(14, 58, 71, 0.65);
  padding: 32px;
  border-radius: 16px;
}

.hero__texto{
  flex: 1 1 320px;
}

.hero__indicadores{
  /* Indicadores clave del programa */
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  padding: 0;
  margin: 24px 0;
}

.hero__indicadores li{
  min-width: 160px;
  font-weight: 600;
}

.hero__indicadores span{
  display: block;
  font-size: 2.2rem;
  color: var(--color-acento);
}

.hero__acciones{
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.hero__imagen{
  width: min(280px, 35vw);
  object-fit: contain;
  filter: drop-shadow(0 16px 24px rgba(0,0,0,0.35));
}

/* --- Botones reutilizables --- */
.btn{
  display: inline-block;
  padding: 12px 28px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.5px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.btn--principal{
  background-color: var(--color-acento);
  color: var(--color-fondo);
  box-shadow: 0 8px 20px rgba(230, 228, 198, 0.25);
}

.btn--principal:hover,
.btn--principal:focus{
  transform: translateY(-3px);
  box-shadow: 0 12px 24px rgba(230, 228, 198, 0.35);
}

.btn--secundario{
  background-color: transparent;
  color: var(--color-acento);
  border: 2px solid var(--color-acento);
}

.btn--secundario:hover,
.btn--secundario:focus{
  background-color: rgba(230, 228, 198, 0.15);
  transform: translateY(-3px);
}

.btn.enlace--deshabilitado{
  /* Estado para enlaces sin destino */
  opacity: 0.6;
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

/* --- Área principal de contenido --- */
main{
  grid-area: main;
  padding: 40px;
}

.seccion{
  margin-bottom: 48px;
}

.seccion__intro{
  max-width: 640px;
  margin-bottom: 32px;
}

#proyectosContainer{
  /* Cuadrícula responsiva para los proyectos */
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.proyecto{
  display: flex;
  flex-direction: column;
  background-color: rgba(14, 58, 71, 0.55);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 10px 24px rgba(0,0,0,0.3);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.proyecto:hover{
  transform: translateY(-4px);
  box-shadow: 0 14px 28px rgba(0,0,0,0.35);
}

.proyecto img{
  height: 160px;
  object-fit: cover;
  filter: grayscale(0.3);
  transition: filter 0.3s ease;
}

.proyecto:hover img{
  filter: grayscale(0);
}

.proyecto div{
  padding: 20px;
}

.proyecto a{
  margin: 0 20px 20px;
  text-align: center;
}

.proyecto p{
  margin-bottom: 12px;
}

.tecnologia{
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  background-color: rgba(230, 228, 198, 0.1);
  color: var(--color-acento);
  font-size: 0.85rem;
  margin: 4px 4px 0 0;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.tecnologia:hover{
  background-color: var(--color-acento);
  color: var(--color-fondo);
}

.tarjeta{
  background-color: var(--color-fondo-tarjeta);
  border-radius: 16px;
  padding: 32px;
  box-shadow: 0 16px 32px rgba(0,0,0,0.25);
}

.itinerario__grid{
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  margin-top: 24px;
}

.itinerario__item{
  padding: 24px;
  border-radius: 12px;
  background-color: rgba(255, 255, 255, 0.08);
  min-height: 180px;
}

.noticias__lista{
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  margin-top: 24px;
}

.noticias__item{
  padding: 24px;
  border-radius: 12px;
  background-color: rgba(255, 255, 255, 0.08);
  min-height: 160px;
}

.sumate__acciones{
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 24px;
}

/* --- Barra lateral con datos dinámicos --- */
aside{
  grid-area: aside;
  padding: 40px 24px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.panel{
  background-color: rgba(14, 58, 71, 0.55);
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 12px 24px rgba(0,0,0,0.25);
}

.panel h2{
  font-size: 1.2rem;
  margin-bottom: 16px;
}

.presentacion{
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.presentacion img{
  max-width: 140px;
  margin: 0 auto;
  display: block;
  filter: drop-shadow(0 10px 20px rgba(0,0,0,0.35));
}

.presentacion div{
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.95rem;
}

.presentacion span:last-child{
  color: var(--color-acento);
  text-align: right;
}

.idiomas{
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.idiomas div{
  display: flex;
  justify-content: space-between;
}

.idiomas span:last-child{
  color: var(--color-acento);
}

#panel-tecnologias{
  display: flex;
  flex-direction: column;
  gap: 12px;
}

#panel-tecnologias .tecnologia{
  display: inline;
  margin: 0;
}

#panel-tecnologias progress{
  margin-top: 4px;
}

/* Barras de progreso personalizadas */
progress {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 8px;
  border-radius: 999px;
  overflow: hidden;
  background-color: rgba(255, 255, 255, 0.2);
}

progress::-webkit-progress-bar{
  background-color: rgba(255, 255, 255, 0.2);
}

progress::-webkit-progress-value{
  background: linear-gradient(90deg, var(--color-acento), var(--color-acento-secundario));
}

progress::-moz-progress-bar{
  background: linear-gradient(90deg, var(--color-acento), var(--color-acento-secundario));
}

#panel-redes{
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
}

#panel-redes div{
  display: flex;
  gap: 16px;
}

#panel-redes a{
  background-color: transparent;
  padding: 8px;
  border-radius: 50%;
  transition: background-color 0.3s ease;
}

#panel-redes a:hover,
#panel-redes a:focus{
  background-color: rgba(255, 255, 255, 0.12);
}

#panel-redes img{
  width: 24px;
  height: 24px;
  filter: invert(0.85);
  transition: transform 0.3s ease, filter 0.3s ease;
}

#panel-redes img:hover{
  transform: scale(1.05);
  filter: invert(1);
}

/* --- Pie de página --- */
footer{
  grid-area: footer;
  text-align: center;
  padding: 24px;
  background-color: rgba(4, 18, 24, 0.9);
}

footer a{
  color: var(--color-acento);
  text-decoration: none;
}

footer a:hover,
footer a:focus{
  text-decoration: underline;
}

/* --- Ajustes responsive --- */
@media(max-width: 1024px){
  body{
    grid-template-columns: 1fr;
    grid-template-areas: 
      "header"
      "main"
      "aside"
      "footer";
  }

  main{
    padding: 32px 24px;
  }

  aside{
    padding: 24px;
  }
}

@media(max-width: 720px){
  header{
    padding: 24px;
  }

  .navegacion{
    flex-direction: column;
    align-items: flex-start;
  }

  .navegacion__links{
    width: 100%;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
  }

  .hero{
    padding: 24px;
  }
}

@media(max-width: 520px){
  .navegacion__links{
    flex-direction: column;
    align-items: flex-start;
  }

  .hero__indicadores{
    flex-direction: column;
    gap: 16px;
  }

  .tarjeta{
    padding: 24px;
  }

  footer{
    padding: 20px;
  }
}