/* Variables globales */
:root {
    --primary-color: #2E3192;
    --secondary-color: #1BFFFF;
    --accent-color: #D4145A;
    --background: #0A0A0A;
    --text-color: #ffffff;
    --card-bg: rgba(255, 255, 255, 0.05);
    --glass-effect: rgba(255, 255, 255, 0.1);
  }
  
  /* Estilos base */
  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
  }
  
  body {
    background: var(--background);
    color: var(--text-color);
    overflow-x: hidden;
  }
  
  /* Header y navegación */
  header {
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    position: fixed;
    width: 100%;
    z-index: 1000;
    padding: 1rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    top: 0;
  }
  
  .logo {
    height: 50px;
    filter: drop-shadow(0 0 10px var(--secondary-color));
  }
  
  nav ul {
    display: flex;
    gap: 2rem;
    list-style: none;
  }
  
  nav a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    padding: 0.5rem 1rem;
    transition: all 0.3s ease;
  }
  
  nav a::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--secondary-color);
    transition: width 0.3s ease;
  }
  
  nav a:hover::before {
    width: 100%;
  }

  .dropdown {
    display: none;
    position: absolute;
    top: 70%;
    left: 74%;
    transform: translateX(-50%);
    background-color: var(--background);
    min-width: 200px;
    box-shadow: 0 8px 16px rgba(0,0,0,0.2);
    border: 1px solid var(--glass-effect);
    border-radius: 0 0 5px 5px;
    z-index: 1001;
    margin-top: 10px;
}

.dropdown::before {
    content: '';
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
    border-bottom: 10px solid rgba(36, 54, 66, 0.95);
}

nav ul li:hover .dropdown {
    display: block;
}

.dropdown li {
    margin: 0;
    width: 100%;
}

.dropdown li a {
    color: white;
    padding: 12px 16px;
    display: block;
    font-size: 14px;
    text-align: center;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.dropdown li a:hover {
    
    color: white;
}

  
  /* Hero section */
  .hero-content {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 8rem 5% 5rem;
    position: relative;
    overflow: hidden;
  }
  
  .hero-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at top right, var(--primary-color), transparent);
    opacity: 0.1;
    z-index: -1;
  }
  
  .hero-text {
    flex: 1;
    max-width: 600px;
  }
  
  h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    line-height: 1.2;
  }
  
  .highlight {
    background: linear-gradient(45deg, var(--secondary-color), var(--accent-color));
    -webkit-background-clip: text;
    color: transparent;
    font-weight: 600;
  }
  
  .hero-description {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
  }
  
  .hero-features {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
  }
  
  .feature {
    display: flex;
    align-items: center;
    gap: 0.5rem;
  }
  
  .feature-icon {
    font-size: 1.5rem;
  }
  
  .cta-button {
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    border: none;
    padding: 1rem 2rem;
    color: white;
    font-size: 1.1rem;
    border-radius: 30px;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }
  
  .cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(27, 255, 255, 0.2);
  }
  
  .hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
  }
  
  .hero-image img {
    max-width: 100%;
    height: auto;
    filter: drop-shadow(0 0 20px rgba(27, 255, 255, 0.3));
  }
  
  /* Featured section */
  .featured-section {
    padding: 5rem 5%;
  }
  
  .featured-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    background: linear-gradient(45deg, var(--secondary-color), var(--accent-color));
    -webkit-background-clip: text;
    color: transparent;
  }
  
  .featured-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
    padding: 1rem;
}
  
  .topic-card {
    position: relative;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 30px;
    padding: 0;
    text-decoration: none;
    color: var(--text-color);
    overflow: hidden;
    transition: transform 0.4s cubic-bezier(0.17, 0.67, 0.83, 0.67);
    height: 400px;
  }
  
  .topic-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, 
      rgba(46, 49, 146, 0.5), 
      rgba(27, 255, 255, 0.5));
    opacity: 0;
    transition: opacity 0.3s ease;
  }
  
  .topic-card:hover {
    transform: translateY(-15px) scale(1.02);
  }
  
  .topic-card:hover::before {
    opacity: 1;
  }
  
  .topic-card img {
    width: 100%;
    height: 80%;
    object-fit: cover;
    transition: transform 0.5s ease;
  }
  
  .topic-card:hover img {
    transform: scale(1.1);
  }
  
  .card-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 2rem;
    background: linear-gradient(
      to top,
      rgba(0, 0, 0, 0.9) 0%,
      rgba(0, 0, 0, 0.7) 50%,
      transparent 100%
    );
    transform: translateY(70px);
    transition: transform 0.3s ease;
  }
  
  .topic-card:hover .card-content {
    transform: translateY(0);
  }
  
  .topic-card h3 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    background: linear-gradient(45deg, var(--secondary-color), #fff);
    -webkit-background-clip: text;
    color: transparent;
  }
  
  .topic-card p {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
    font-size: 0.95rem;
    line-height: 1.6;
  }
  
  .topic-card:hover p {
    opacity: 1;
    transform: translateY(0);
  }
  
  /* Nueva sección Acerca de Nosotros */
  .about-section {
    padding: 8rem 5%;
    position: relative;
    overflow: hidden;
  }
  
  .about-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
  }
  
  .about-content {
    position: relative;
    z-index: 1;
  }
  
  .about-content h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    background: linear-gradient(45deg, var(--secondary-color), var(--accent-color));
    -webkit-background-clip: text;
    color: transparent;
  }
  
  .about-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    color: rgba(255, 255, 255, 0.9);
  }
  
  .stats-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
  }
  
  .stat-item {
    text-align: center;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.05);
  }
  
  .stat-number {
    font-size: 2.5rem;
    font-weight: 600;
    background: linear-gradient(45deg, var(--secondary-color), #fff);

    color: transparent;
    margin-bottom: 0.5rem;
  }
  
  .stat-label {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
  }
  
  .about-image {
    position: relative;
  }
  
  .about-image img {
    width: 100%;
    height: auto;
    border-radius: 30px;
    filter: drop-shadow(0 0 20px rgba(27, 255, 255, 0.2));
  }
  
  .about-image::before {
    content: '';
    position: absolute;
    top: -20px;
    left: -20px;
    right: 20px;
    bottom: 20px;
    border: 2px solid var(--secondary-color);
    border-radius: 30px;
    z-index: -1;
  }
  
  /* Media queries para la sección About */
  @media (max-width: 968px) {
    .about-container {
      grid-template-columns: 1fr;
      text-align: center;
    }
  
    .stats-container {
      grid-template-columns: repeat(2, 1fr);
    }
  
    .about-image {
      order: -1;
      margin-bottom: 2rem;
    }
  
    .about-image::before {
      display: none;
    }
  }
  /* Footer */
  footer {
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    padding: 2rem 5%;
    text-align: center;
  }
  
  .social-media {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 1rem;
  }
  
  .social-media img {
    width: 30px;
    height: 30px;
    transition: transform 0.3s ease;
  }
  
  .social-media img:hover {
    transform: scale(1.2);
  }
  
  /* Animaciones */
  @keyframes float {
    0% {
      transform: translateY(0);
    }
    50% {
      transform: translateY(-30px);
    }
    100% {
      transform: translateY(0);
    }
  }
  
  .hero-image img {
    animation: float 6s ease-in-out infinite;
  }
  
  /* Media queries */
  @media (max-width: 968px) {
    .hero-content {
      flex-direction: column;
      text-align: center;
    }
  
    .hero-features {
      justify-content: center;
    }
  
    h1 {
      font-size: 2.5rem;
    }
  
    .hero-image {
      margin-top: 3rem;
    }
  }
  
  @media (max-width: 768px) {
    nav ul {
      display: none;
    }
  }

/* Cambiar el color de la barra de desplazamiento */
::-webkit-scrollbar-thumb {
    background-color: var(--secondary-color);
    border-radius: 10px;
}

::-webkit-scrollbar-track {
    background-color: var(--background);
}

::-webkit-scrollbar {
    width: 10px;
}