/* Reset básico */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Arial', sans-serif;
  background-color: #f4f4f4;
  color: #333;
}

/* Navbar */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: #083b6e;
  padding: 1rem 2rem;
  position: relative;
  height: 107px;
}

.logo img {
  height: 95px;
}

/* Menú base */
.nav-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  align-items: center;
  position: relative;
}

.nav-links li {
  position: relative;
  margin-left: 1.5rem;
}

.nav-links a {
  color: white;
  text-decoration: none;
  font-weight: bold;
  padding: 0.5rem;
}

.nav-links a.active {
  background-color: #0a5db1;
  border-radius: 4px;
  padding: 0.5rem 1rem;
}

/* Menú desplegable oculto por defecto */
.dropdown-menu {
  display: none;
  position: absolute;
  background-color: #003366;
  border-radius: 4px;
  top: 100%;
  left: 0;
  list-style: none;
  padding: 0.5rem 0;
  z-index: 999;
  min-width: 240px;
}

.dropdown.open .dropdown-menu {
  display: block;
}

.dropdown-menu li a {
  display: block;
  padding: 0.6rem 1rem;
  color: white;
  text-decoration: none;
  transition: background-color 0.2s;
}

.dropdown-menu li a:hover {
  background-color: #004080;
}

.dropdown-toggle {
  cursor: pointer;
}

/* Submenú oculto por defecto */
.sub-menu {
  display: none;
  background-color: #004080;
  list-style: none;
  margin-top: 0.3rem;
  border-radius: 4px;
  padding: 0.3rem 0;
}

.sub-dropdown.open .sub-menu {
  display: block;
}

.sub-menu li a {
  display: block;
  padding: 0.5rem 1rem;
  color: white;
  text-decoration: none;
  transition: background-color 0.2s;
}

.sub-menu li a:hover {
  background-color: #0055aa;
}

.sub-toggle {
  cursor: pointer;
  display: block;
  color: white;
  padding: 0.6rem 1rem;
  text-decoration: none;
}

/* Burger menu */
.burger {
  display: none;
  font-size: 1.5rem;
  color: white;
  background: none;
  border: none;
}

/* Sección principal de ponentes */
.ponentes-section {
  padding: 4rem 2rem;
  background-color: #f8f9fa;
  min-height: calc(100vh - 107px);
}

.ponentes-container {
  max-width: 1200px;
  margin: 0 auto;
}

.ponentes-title {
  text-align: center;
  font-size: 3rem;
  color: #001f3f;
  margin-bottom: 3rem;
  font-weight: bold;
}

/* Grid de tarjetas de ponentes */
.ponentes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2.5rem;
  justify-items: center;
}

/* Tarjeta individual del ponente */
.ponente-card {
  background: white;
  border-radius: 20px;
  padding: 2rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  max-width: 400px;
  width: 100%;
}

.ponente-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(8, 59, 110, 0.2);
}

/* Imagen del ponente */
.ponente-image {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
  object-position: top center;
  margin: 0 auto 1.5rem;
  border: 5px solid #083b6e;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

/* Nombre del ponente */
.ponente-name {
  font-size: 1.8rem;
  color: #001f3f;
  margin-bottom: 1rem;
  font-weight: bold;
}

/* Descripción del ponente */
.ponente-description {
  color: #666;
  line-height: 1.6;
  font-size: 1rem;
  text-align: justify;
  min-height: 100px;
}

/* Footer */
footer {
  background-color: #001f3f;
  color: white;
  padding: 2rem 1rem 1rem;
}

.footer-container {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.footer-column {
  flex: 1;
  min-width: 250px;
}

.footer-column h3 {
  margin-bottom: 1rem;
  font-size: 1.2rem;
  color: #ffd700;
}

.footer-column p {
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
}

.social-icons {
  display: flex;
  gap: 1rem;
}

.social-icons img {
  width: 32px;
  height: 32px;
  filter: brightness(0) invert(1);
  transition: transform 0.3s ease;
}

.social-icons a:hover img {
  transform: scale(1.1);
}

.footer-bottom {
  text-align: center;
  margin-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.2);
  padding-top: 1rem;
  font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 768px) {
  .ponentes-title {
    font-size: 2.5rem;
  }
  
  .ponentes-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .ponente-image {
    width: 150px;
    height: 150px;
  }
  
  .ponente-name {
    font-size: 1.5rem;
  }
  
  .burger {
    display: block;
    font-size: 2rem;
    cursor: pointer;
  }

  .nav-links {
    display: none;
    flex-direction: column;
    align-items: flex-start;
    background-color: #001f3f;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    padding: 1rem;
    z-index: 1000;
  }

  .nav-links.nav-active {
    display: flex;
  }

  .nav-links li {
    margin: 0.5rem 0;
    width: 100%;
  }

  .nav-links li a {
    display: block;
    width: 100%;
  }

  .dropdown-menu,
  .sub-menu {
    position: static;
    background-color: #002b5c;
    width: 100%;
  }

  .dropdown-menu li,
  .sub-menu li {
    padding-left: 1rem;
  }

  .footer-container {
    flex-direction: column;
    text-align: center;
    align-items: center;
  }

  .footer-column {
    align-items: center;
  }
}

@media (max-width: 480px) {
  .ponentes-section {
    padding: 2rem 1rem;
  }
  
  .ponente-card {
    padding: 1.5rem;
  }
  
  .ponentes-title {
    font-size: 2rem;
  }
}