body {
    font-family: Arial, sans-serif;
    background-color: #f3f3f3;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 0;
  }
  
  .container {
    text-align: center;
    width: 100%;
    max-width: 600px;
    margin-top: 20px;
  }
  
  h1 {
    margin-bottom: 20px;
  }
  
  .card {
    font-size: 2rem;
    padding: 30px 50px;
    background-color: white;
    border-radius: 10px;
    border: 2px solid #ccc;
    margin-bottom: 20px;
    transition: background-color 0.3s ease;
  }
  
  .buttons button,
  .extras button {
    font-size: 1.2rem;
    margin: 10px 5px;
    padding: 10px 20px;
    cursor: pointer;
  }
  
  /* Artículo buttons */
  button.article-der {
    background-color: #5dade2;
    color: white;
  }
  
  button.article-die {
    background-color: #f1948a;
    color: white;
  }
  
  button.article-das {
    background-color: #f9e79f;
    color: black;
  }
  
  button.article-der:hover,
  button.article-die:hover,
  button.article-das:hover {
    opacity: 0.8;
  }
  
  .masculine {
    background-color: #5dade2 !important;
  }
  
  .feminine {
    background-color: #f1948a !important;
  }
  
  .neuter {
    background-color: #f9e79f !important;
  }
  
  .stats {
    margin-top: 20px;
    font-size: 1.1rem;
  }
  
  .translation {
    margin-top: 10px;
    font-style: italic;
    color: #555;
  }
  
  .mode-indicator {
    margin-bottom: 10px;
    font-weight: bold;
    color: #c0392b;
    font-size: 1.1rem;
  }
  
.top-nav {
  position: relative;
  width: 100%;
  padding: 10px 0;
  border-bottom: 1px solid #ddd;
  background-color: transparent;
}

.top-nav ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.top-nav li {
  display: inline-block;
}

.top-nav li a {
  text-decoration: none;
  font-size: 1.2rem;
  color: black;
  padding: 8px 12px;
  transition: background-color 0.2s ease;
}

.top-nav li a:hover {
  background-color: #ddd;
  border-radius: 6px;
}

/* Casa a la izquierda */
.top-nav li.home-icon {
  position: absolute;
  left: 1px;
  top: 50%;
  transform: translateY(-50%);
}
/* Menú central */
.top-nav ul {
  text-align: center;
  position: relative;
}