body {
      font-family: Arial, sans-serif;
      background-color: #f1f1f1;
      margin: 0;
      padding: 20px;
    }

    h1 {
      text-align: center;
    }

    .progress-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
      gap: 10px;
      margin-top: 30px;
    }

    .letter-card {
      display: block;
      text-decoration: none;
      color: inherit;
      background-color: white;
      border: 2px solid #ccc;
      border-radius: 10px;
      padding: 15px;
      text-align: center;
      font-size: 1.2em;
      box-shadow: 2px 2px 8px rgba(0,0,0,0.1);
      cursor: pointer;
      transition: box-shadow 0.3s ease;
    }

    .letter-card:hover {
      box-shadow: 4px 4px 12px rgba(0,0,0,0.2);
    }

    .letter-card.completed {
      opacity: 0.5;
      pointer-events: none;
      cursor: not-allowed;
    }

    .level-badge {
      display: inline-block;
      background-color: #2196F3;
      color: white;
      padding: 4px 10px;
      margin-top: 8px;
      border-radius: 12px;
      font-size: 0.9em;
    }

    .level-0 { background-color: #e0e1b0; color: #000; }
    .level-1 { background-color: #aed581; color: #000; }
    .level-2 { background-color: #4dd0e1; color: #000; }
    .level-3 { background-color: #fff59d; color: #000; }
    .level-4 { background-color: #ffcc80; color: #000; }
    .level-5 { background-color: #ffb74d; color: #000; }
    .level-6 { background-color: #e57373; color: #000; }
    .level-7 { background-color: #9575cd; color: #fff; }
    .level-8 { background-color: #313131; color: #fff; }

    .filter {
      text-align: center;
      margin-top: 10px;
    }

    section {
      max-width: 700px;
      margin: 2em auto;
      padding: 1em;
      line-height: 1.6;
    }

    section h2 {
      margin-bottom: 0.5em;
      font-size: 1.5em;
      border-bottom: 2px solid #ccc;
      padding-bottom: 0.2em;
    }

    /* Ajout pour mise en valeur de la progression */
	.progress-summary {
	  background-color: #ffffff;
	  border: 1px solid #ddd;
	  padding: 1em;
	  border-radius: 10px;
	  text-align: center;
	  margin-bottom: 10px;
	  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
	}

    .progress-summary p {
      margin: 8px 0;
      font-size: 1em;
    }

    progress {
      width: 100%;
      height: 20px;
      margin-top: 10px;
    }
	
	.progress-actions {
	  display: flex;
	  justify-content: center;
	  gap: 15px;
	  margin: 10px auto 20px auto;
	}

	.progress-actions button {
	  padding: 8px 14px;
	  font-size: 1em;
	  background-color: #4caf50;
	  color: white;
	  border: none;
	  border-radius: 20px;
	  cursor: pointer;
	  transition: transform 0.2s ease, background-color 0.3s ease;
	}

	.progress-actions button:hover {
	  background-color: #388e3c;
	  transform: scale(1.05);
	}
	
	
	.share-box {
	  margin-top: 20px;
	  padding: 15px;
	  background-color: #fefefe;
	  border: 1px solid #ccc;
	  border-radius: 10px;
	  text-align: center;
	  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
	}

	.share-box p {
	  font-size: 1em;
	  margin-bottom: 10px;
	}

	.share-box button {
	  margin: 5px;
	  padding: 8px 12px;
	  font-size: 0.9em;
	  border: none;
	  border-radius: 6px;
	  cursor: pointer;
	  background-color: #2196F3;
	  color: white;
	}

	.share-box button:hover {
	  background-color: #1976D2;
	}