/* Estilos base */

body {
  font-family: 'Open Sans', sans-serif;
  margin: 0;
  padding: 0;
  background-color: #F2F2F2;
  color: #333;
}

header {
  background-color: #002855;
  color: white;
  padding: 20px;
  text-align: center;
}

.logo {
  height: 80px;
  margin-bottom: 10px;
}

/* NAV oculto por defecto en móviles */
nav {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.4s ease, opacity 0.3s ease;
  flex-direction: column;
  background-color: #004080;
  width: 100%;
}

/* NAV visible en móviles cuando se activa */
nav.active {
  max-height: 300px;  /* Ajusta según altura del contenido */
  opacity: 1;
}

nav.active {
  max-height: 500px; /* Ajusta según el contenido real */
  opacity: 1;
}

@media (min-width: 769px) {
  nav {
    display: flex !important;
    max-height: none !important;
    opacity: 1 !important;
    flex-direction: row;
    justify-content: center;
  }

  .menu-toggle {
    display: none; /* Oculta el botón hamburguesa en escritorio */
  }
}


nav a {
  color: white;
  padding: 12px 18px;
  text-decoration: none;
  display: block;
}

nav a:hover {
  background-color: #005FA3;
}

.banner {
  background-image: url('../images/espacio-banner.jpg');
  background-size: cover;
  background-position: center;
  color: white;
  text-align: center;
  padding: 150px 50px;
}

.banner h2, .banner p {
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
}


main {
  padding: 20px;
  max-width: 960px;
  margin: auto;
  background-color: white;
}

section h2 {
  border-bottom: 2px solid #0072CE;
  padding-bottom: 5px;
}

footer {
  text-align: center;
  background-color: #002855;
  color: white;
  padding: 10px;
  font-size: 0.9em;
  margin-top: 40px;
}

/* Estilos adicionales para listas */

ul {
  padding-left: 25px;
  margin-top: 10px;
  margin-bottom: 20px;
}

ul li {
  margin-bottom: 8px;
  position: relative;
  padding-left: 10px;
}

ul li::before {
  color: #0072CE;
  font-weight: bold;
  position: absolute;
  left: -10px;
}

/* Estilos responsive */

@media (max-width: 768px) {
  .logo {
    height: 60px;
  }

  nav {
    flex-direction: column;
    align-items: center;
  }

  nav a {
    padding: 10px;
    width: 100%;
    text-align: center;
  }

  .banner {
    padding: 60px 20px;
    font-size: 1.2em;
  }

  main {
    padding: 15px;
  }
}

@media (max-width: 480px) {
  .banner {
    padding: 40px 15px;
    font-size: 1em;
  }

  header h1 {
    font-size: 1.3em;
  }

  header p {
    font-size: 0.95em;
  }

  nav a {
    font-size: 0.95em;
  }
}

/* Acordeones */

.accordion {
  font-family: 'Montserrat', sans-serif;
  background-color: #F2F2F2;
  color: #002855;
  cursor: pointer;
  padding: 15px;
  width: 100%;
  text-align: left;
  border: none;
  outline: none;
  font-size: 1.1em;
  font-weight: bold;
  border-bottom: 1px solid #ccc;
  transition: background-color 0.2s ease;
}

.accordion:hover,
.accordion.active {
  background-color: #e6e6e6;
}

.panel {
  padding: 0 15px 15px 15px;
  display: none;
  background-color: white;
  border-left: 3px solid #0072CE;
  border-right: 3px solid #0072CE;
  border-bottom: 3px solid #0072CE;
}

.panel ul {
  margin-top: 10px;
  padding-left: 20px;
}

.simposio + .simposio {
  margin-top: 10px;
}

/* Títulos */

h1, h2, h3 {
  font-family: 'Montserrat', sans-serif;
}

/* Botón reutilizable */

.btn {
  background-color: #0072CE;
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 4px;
  font-size: 1em;
  cursor: pointer;
}

.btn:hover {
  background-color: #005FA3;
}

/* Botón hamburguesa estilizado */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 22px;
  cursor: pointer;
  margin: 15px auto 10px auto;
  z-index: 1000;
}

.menu-toggle span {
  display: block;
  height: 3px;
  background-color: white;
  border-radius: 2px;
  transition: 0.3s ease-in-out;
}

/* Estilo del botón cuando está activo */
.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* Mostrar el botón en móviles */
@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }

  nav {
    display: none;
    flex-direction: column;
    background-color: #004080;
    width: 100%;
  }

  nav.active {
    display: flex;
  }
}