/* Main content styling */
.main-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr); /* 3 columns */
    gap: 20px; /* Space between columns */
    padding: 20px;
    text-align: center;
}

/* Navigation styling */
.navigation ul {
    display: flex;
    justify-content: center;
    gap: 20px;
    padding: 0;
}

.navigation li {
    list-style: none;
}

.navigation a {
    text-decoration: none;
    color: #fff;
    padding: 10px 20px;
    background-color: #e32524;
    border-radius: 5px;
    transition: background-color 0.3s ease;
}

.navigation a:hover {
    background-color: #c7241f; /* Darker shade for hover */
}

/* PDF links styling */
.pdf-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.pdf-item {
    text-align: center;
    background-color: #fff;
    border: 1px solid #e32524;
    padding: 20px;
    border-radius: 8px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.pdf-item:hover {
    transform: scale(1.05); /* Slight zoom effect */
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.pdf-item img {
    max-width: 80px;
    margin-bottom: 10px;
}

.pdf-item figcaption {
    color: #333;
    font-weight: 600;
}

/* Media Query Adjustments */
@media only screen and (max-width: 600px) {
    .main-content {
        grid-template-columns: 1fr; /* Single column on mobile */
    }

    .pdf-links {
        grid-template-columns: 1fr; /* Single column for PDF links */
    }
    
    .navigation ul {
        flex-direction: column;
    }
}