body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: #f4f7f6;
    color: #333;
    margin: 0;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center; 
    min-height: 100vh;
}

.main-header {
    text-align: center;
    margin-bottom: 40px;
}

.main-header h1 {
    font-size: 2.5rem;
    color: #1a1a1a;
    margin-bottom: 10px;
}

.project-menu {
    display: flex; 
    justify-content: center; 
    flex-wrap: wrap; 
    gap: 20px; 
    width: 100%;
    max-width: 1200px; 
    padding: 0 20px;
    box-sizing: border-box;
}

.menu-item {
    background-color: #ffffff;
    color: #333;
    text-decoration: none;
    padding: 25px 35px;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    flex-grow: 1; 
    min-width: 200px; 
}

.menu-item:hover {
    transform: translateY(-5px); 
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    color: #007bff;
}

@media (max-width: 768px) {
    .main-header h1 {
        font-size: 2rem;
    }

    .project-menu {
        flex-direction: column; 
        align-items: center; 
        gap: 15px;
    }

    .menu-item {
        width: 100%; 
        max-width: 350px; 
        padding: 20px;
    }
}