.example-demo {
    padding: 4rem 2rem;
    background-color: white;
    margin-bottom: 20px;
}

.example-demo h2 {
    text-align: center;
    margin-bottom: 2rem;
    color: #2c3e50;
}

.example-container {
    max-width: 1200px;
    margin: 0 auto;
}

.before-after {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
}

.before, .after {
    flex: 1;
    min-width: 300px;
    background-color: #f9f9f9;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.before h3, .after h3 {
    text-align: center;
    margin-bottom: 1rem;
    color: #2c3e50;
}

.arrow {
    display: flex;
    align-items: center;
    font-size: 2rem;
    color: #3498db;
    font-weight: bold;
}

.excel-table {
    overflow-x: auto;
}

.excel-table table {
    width: 100%;
    border-collapse: collapse;
}

.excel-table th, .excel-table td {
    padding: 0.5rem;
    border: 1px solid #ddd;
    text-align: left;
}

.excel-table th {
    background-color: #3498db;
    color: white;
}

.excel-table tr:nth-child(even) {
    background-color: #f2f2f2;
}

.folder-structure {
    font-family: monospace;
}

.tree, .tree ul {
    list-style-type: none;
    padding-left: 1.5rem;
    position: relative;
}

.tree li {
    position: relative;
    padding-left: 1rem;
    margin: 0.3rem 0;
}

.tree li::before {
    content: "📁";
    position: absolute;
    left: -0.5rem;
}

.tree li li::before {
    content: "📂";
}

/* Icona per i file Excel (terzo livello) */
.tree li li li::before {
    content: "📊"; /* Oppure puoi usare "📈" o "📉" */
    color: #1d6f42;
}

/* Regola specifica per i fogli singoli (quarto livello) */
.tree li li li li::before {
    content: "📄";
    color: #4CAF50;
    left: -0.5rem; /* Allineamento corretto */
    background-image: none; /* Rimuove l'icona Excel */
}

/* Nascondi l'icona Excel quando è padre di un foglio singolo */
.tree li li li > ul > li::before {
    display: none;
}

/* Spaziatura per i fogli singoli */
.tree li li li li {
    padding-left: 1rem;
    margin-left: 0;
}

.hierarchy-explanation {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    padding: 1rem;
    background-color: #e8f4fc;
    border-radius: 8px;
    font-size: 1.1rem;
}

@media (max-width: 768px) {
    .arrow {
        display: none;
    }
    
    .before, .after {
        min-width: 100%;
    }
}