/* ========================= */
/* PALETA INSTITUCIONAL      */
/* ========================= */
:root {
  --azul-oscuro: #092A6D;
  --azul-principal: #0257F6;
  --azul-secundario: #0090D5;

  --blanco: #ffffff;
  --gris-fondo: #f2f4f8;
  --gris-footer: #092A6D;

  --sombra: rgba(0, 0, 0, 0.2);
}

/* ========================= */
/* BASE GENERAL              */
/* ========================= */
body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif, Helvetica, sans-serif;
  background-color: var(--gris-fondo);
  scroll-behavior: smooth;
}

/* ========================= */
/* CONTENEDOR PRINCIPAL      */
/* ========================= */
.documentos-institucionales {
  max-width: 1100px;
  margin: 20px auto;
  padding: 20px;
}

/* ========================= */
/* BIENVENIDA ACADÉMICA      */
/* ========================= */
.bienvenida-academica {
  background: linear-gradient(
    135deg,
    var(--azul-oscuro),
    var(--azul-principal)
  );
  border-radius: 22px;
  padding: 60px 30px;
  margin-bottom: 55px;
  box-shadow: 0 14px 26px var(--sombra);
  color: var(--blanco);
}

.bienvenida-wrapper {
  max-width: 820px;
  margin: 0 auto;
  text-align: center;
}

.etiqueta-institucional {
  display: inline-block;
  background-color: rgba(255, 255, 255, 0.15);
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 13px;
  letter-spacing: 0.6px;
  margin-bottom: 18px;
}

.bienvenida-academica h1 {
  font-size: 36px;
  margin: 10px 0 18px;
}

.bienvenida-academica p {
  font-size: 16px;
  line-height: 1.6;
  opacity: 0.95;
}

/* ========================= */
/* BLOQUES DE SECCIÓN        */
/* ========================= */
.bloque-documentos,
.bloque-noticias {
  background-color: var(--azul-oscuro);
  border-radius: 18px;
  padding: 32px;
  margin-bottom: 45px;
  box-shadow: 0 10px 20px var(--sombra);
}

.bloque-documentos h2,
.bloque-noticias h2 {
  color: var(--blanco);
  text-align: center;
  margin-bottom: 28px;
  font-size: 26px;
  letter-spacing: 0.5px;
}

/* ========================= */
/* LISTAS DOCUMENTOS         */
/* ========================= */
.lista-documentos {
  list-style: none;
  padding: 0;
  margin: 0;
}

.lista-documentos li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: var(--azul-principal);
  border-radius: 14px;
  padding: 16px 22px;
  margin-bottom: 14px;
  color: var(--blanco);
  font-size: 15px;
  transition: all 0.25s ease;
}

.lista-documentos li span {
  max-width: 78%;
  line-height: 1.5;
}

.lista-documentos li:hover,
.lista-documentos li.activo {
  background-color: var(--azul-secundario);
  transform: translateX(6px);
}

/* ========================= */
/* BOTONES DOCUMENTOS        */
/* ========================= */
.btn-acceso,
.btn-ver-mas {
  background-color: var(--blanco);
  color: var(--azul-oscuro);
  text-decoration: none;
  padding: 10px 18px;
  border-radius: 24px;
  font-weight: bold;
  font-size: 14px;
  transition: all 0.3s ease;
}

.btn-acceso:hover,
.btn-ver-mas:hover {
  background-color: var(--azul-secundario);
  color: var(--blanco);
}

/* ========================= */
/* FOOTER SUPERIOR (MENÚ)    */
/* ========================= */
.footer-principal {
  background-color: var(--gris-footer);
  padding: 35px 20px;
  text-align: center;
  margin-top: 60px;
}

.footer-nav {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 22px;
  margin-bottom: 25px;
}

.footer-nav a {
  color: var(--blanco);
  text-decoration: none;
  font-weight: bold;
  font-size: 16px;
  transition: color 0.3s ease;
}

.footer-nav a:hover {
  color: var(--azul-secundari);
}

/* ========================= */
/* LOGO FOOTER               */
/* ========================= */
.logo-footer {
  max-width: 340px;
  margin: 18px auto;
  display: block;
}

/* ========================= */
/* TEXTO FINAL FOOTER        */
/* ========================= */
.footer-principal p {
  color: #cfd8ff;
  font-size: 13px;
  margin-top: 12px;
}

/* ========================= */
/* BOTONES SUBIR / BAJAR     */
/* ========================= */
.scroll-buttons {
  position: fixed;
  right: 20px;
  bottom: 40px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 999;
}

.scroll-buttons button {
  width: 48px;
  height: 48px;
  border: none;
  border-radius: 50%;
  background-color: var(--azul-principal);
  color: var(--blanco);
  font-size: 18px;
  font-weight: bold;
  cursor: pointer;
  box-shadow: 0 8px 16px var(--sombra);
  transition: all 0.3s ease;
}

.scroll-buttons button:hover {
  background-color: var(--azul-oscuro);
  transform: translateY(-2px);
}

#btn-up {
  display: none;
}
/* ===================== */
/* SECCIÓN BIENVENIDA    */
/* ===================== */
.bloque-bienvenida {
  background: linear-gradient(
    135deg,
    var(--azul-oscuro),
    var(--azul-principal)
  );
  border-radius: 24px;
  padding: 70px 30px;
  margin-bottom: 60px;
  box-shadow: 0 16px 30px var(--sombra);
  color: var(--blanco);
}

.bienvenida-contenido {
  max-width: 850px;
  margin: 0 auto;
  text-align: center;
}

.bienvenida-contenido h1 {
  font-size: 38px;
  margin-bottom: 22px;
  letter-spacing: 0.5px;
}

.bienvenida-contenido p {
  font-size: 17px;
  line-height: 1.7;
  opacity: 0.95;
}

/* Responsive */
@media (max-width: 768px) {
  .bloque-bienvenida {
    padding: 50px 22px;
  }

  .bienvenida-contenido h1 {
    font-size: 30px;
  }

  .bienvenida-contenido p {
    font-size: 16px;
  }
}
/* ===================== */
/* ESTILOS PARA POLÍTICAS */
/* ===================== */
.bloque-politicas {
  background-color: var(--azul-principal);
  border-radius: 18px;
  padding: 32px;
  margin-bottom: 45px;
  box-shadow: 0 10px 20px var(--sombra);
}

.bloque-politicas h2 {
  color: var(--blanco);
  text-align: center;
  margin-bottom: 28px;
  font-size: 26px;
  letter-spacing: 0.5px;
}

.lista-documentos-politicas {
  list-style: none;
  padding: 0;
  margin: 0;
}

.lista-documentos-politicas li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: var(--azul-secundario);
  border-radius: 14px;
  padding: 16px 22px;
  margin-bottom: 14px;
  color: var(--blanco);
  font-size: 15px;
  transition: all 0.25s ease;
}

.lista-documentos-politicas li span {
  max-width: 78%;
  line-height: 1.5;
}

.lista-documentos-politicas li:hover,
.lista-documentos-politicas li.activo {
  background-color: var(--azul-oscuro);
  transform: translateX(6px);
}

/* ===================== */
/* BOTONES POLÍTICAS */
/* ===================== */
.btn-acceso-politicas,
.btn-ver-mas-politicas {
  background-color: var(--blanco);
  color: var(--azul-oscuro);
  text-decoration: none;
  padding: 10px 18px;
  border-radius: 24px;
  font-weight: bold;
  font-size: 14px;
  transition: all 0.3s ease;
}

.btn-acceso-politicas:hover,
.btn-ver-mas-politicas:hover {
  background-color: var(--azul-secundario);
  color: var(--blanco);
}
body {
  background-image: url("img/background.png");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed; /* opcional */
}
/* Contenedor de logos */
.footer-logos {
  display: flex;
  justify-content: center; /* centra los logos */
  align-items: center;
  gap: 80px; /* más espacio entre logos */
  margin-bottom: 35px;
  position: relative;
  z-index: 1; /* sobre overlay */
  flex-wrap: wrap; /* responsive: apila en pantallas pequeñas */
}