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

body {
  font-family: Arial, sans-serif;
  background-color: #f8f8f8;
  padding: 20px;
}

header {
  text-align: center;
  margin-bottom: 30px;
}

.categorias-menu {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 15px;
  margin-top: 15px;
}

.categorias-menu li a {
  text-decoration: none;
  color: #2c3e50;
  font-weight: bold;
  padding: 8px 12px;
  border: 2px solid #2c3e50;
  border-radius: 5px;
  transition: background 0.3s ease;
}

.categorias-menu li a:hover {
  background-color: #2c3e50;
  color: #fff;
}

.galeria {
  display: grid;
  grid-template-columns: repeat(4, 1fr); /* 4 columnas fijas */
  gap: 20px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

.galeria img {
  width: 100%;
  height: auto;
  border-radius: 6px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
  transition: transform 0.3s ease;
}

.galeria img:hover {
  transform: scale(1.04);
}

/* Adaptación para tabletas */
@media (max-width: 768px) {
  .galeria {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Adaptación para móviles */
@media (max-width: 480px) {
  .galeria {
    grid-template-columns: 1fr;
  }

  .categorias-menu {
    flex-direction: column;
    align-items: center;
  }

  .categorias-menu li {
    margin-bottom: 10px;
  }
}

.menu-toggle {
  display: none;
  font-size: 28px;
  background: none;
  border: none;
  cursor: pointer;
  margin: 10px;
}

@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }

  .categorias-nav {
    display: none;
    text-align: center;
  }

  .categorias-nav.active {
    display: block;
  }

  .categorias-menu {
    flex-direction: column;
    gap: 10px;
  }
}

.paginacion {
  display: flex;
  justify-content: center;
  margin-top: 30px;
  gap: 10px;
}

.paginacion a {
  padding: 8px 14px;
  border: 1px solid #ccc;
  text-decoration: none;
  color: #333;
  border-radius: 5px;
  transition: background 0.3s;
}

.paginacion a:hover {
  background-color: #2c3e50;
  color: #fff;
}

.paginacion a.activo {
  background-color: #2c3e50;
  color: white;
  pointer-events: none;
}

.volver-inicio {
  text-align: center;
  margin: 40px 0 20px;
}

.boton-volver {
  display: inline-block;
  padding: 10px 20px;
  background-color: #2c3e50;
  color: white;
  text-decoration: none;
  border-radius: 6px;
  font-weight: bold;
  transition: background-color 0.3s;
}

.boton-volver:hover {
  background-color: #1a252f;
}

.video-container {
  max-width: 320px;
  margin: 20px auto;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
  text-align: center;
  background-color: #fff;
}

.video-container:hover {
  transform: scale(1.03);
}

.video-container a {
  text-decoration: none;
  color: inherit;
  display: block;
}

.video-container img {
  width: 100%;
  height: auto;
  display: block;
  border-bottom: 1px solid #eee;
}

.video-container p {
  padding: 10px;
  font-size: 16px;
  font-weight: 500;
  color: #333;
}