body {
    background: linear-gradient(to bottom, #1e3c72, #2a5298);
    font-family: 'Segoe UI', sans-serif;
    color: white;
    text-align: center;
    padding: 40px;
    background-image: url('background.jpg');
    background-size: cover;
    background-attachment: fixed;
  }
  
  h1 {
    font-size: 2.5em;
    margin-bottom: 50px;
    text-shadow: 2px 2px 4px #000;
  }

  embed {
    width: 100%;
    height: 100%;
    border: none;
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
  }
  
  .menu {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 30px;
  }
  
  .menu-item button {
    width: 300px;
    height: 100px;
    background-color: #027023;
    color: #dfdfdf;
    border: none;
    padding: 15px 30px;
    font-size: 1.4em;
    font-weight: bold;
    border-radius: 15px;
    cursor: pointer;
    box-shadow: 3px 3px 10px rgba(0,0,0,0.4);
    transition: transform 0.2s, background-color 0.3s;
  }
  
  .menu-item button:hover {
    background-color: #059230;
    transform: scale(1.05);
  }
  
  .submenu {
    display: none;
    margin-top: 15px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 12px;
    padding: 15px;
    backdrop-filter: blur(5px);
  }
  
  .submenu a {
    display: block;
    margin: 10px 0;
    color: rgb(3, 134, 36);
    font-weight: bold;
    text-decoration: none;
    transition: color 0.3s;
  }
  
  .submenu a:hover {
    color: #ff0000;
  }
  
  .pdf-viewer {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.95);
    justify-content: center;
    align-items: center;
    z-index: 9999;
    cursor: pointer;
  }
  
  .pdf-viewer iframe {
    width: 90%;
    height: 90%;
    border: 5px solid white;
    border-radius: 10px;
    pointer-events: none; /* Pour que le clic ferme la fenêtre */
  }
  
  .close-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    background-color: #ff4444;
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.5em;
    width: 40px;
    height: 40px;
    cursor: pointer;
    z-index: 10000;
    box-shadow: 2px 2px 8px rgba(0,0,0,0.5);
    transition: background-color 0.3s;
  }
  
  .close-btn:hover {
    background-color: #cc0000;
  }

  footer {
    /*background-color: #333;  /* Couleur de fond sombre pour le footer */
    color: rgb(255, 255, 255);            /* Texte en blanc */
    text-align: center;      /* Centrer le texte */
    padding: 10px 0;         /* Espacement autour du texte */
    position: fixed;         /* Fixe le footer en bas de la page */
    bottom: 0;               /* Place le footer tout en bas */
    width: 100%;             /* Prend toute la largeur de l'écran */
    font-size: 18px;         /* Taille de police modeste */
    font-weight: bold;
    z-index: 1000;           /* Assure que le footer reste au-dessus du contenu */
    opacity: 1;

    backdrop-filter: blur(10px);
  }
  
  footer p {
    margin: 0;  /* Retirer les marges par défaut du paragraphe */
  }