/* Body styling */
body {
    margin: 0;
    font-family: 'Roboto', Arial, sans-serif;
    background: linear-gradient(to right, #f0f9ff, #e1f5fe);
    color: #333;
    transition: all 0.3s ease-in-out;
}

/* Header navigation styles */
header {
    background: #81d4fa;
    padding: 30px 0; /* Increased padding for a larger header */
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    text-align: center;
}

header nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    justify-content: center;
    gap: 25px;
}

header nav ul li {
    display: inline;
}

header nav ul li a {
    text-decoration: none;
    color: #333;
    font-weight: bold;
    padding: 10px 20px; /* Slightly larger padding for header links */
    border-radius: 5px;
    font-size: 16px; /* Larger font for better readability */
    transition: all 0.3s ease-in-out;
}

header nav ul li a:hover {
    color: #fff;
    background: #0288d1;
}

/* Main section - test links styling */
main {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 30px;
    gap: 8px; /* Reduced gap between test links */
}

main a {
    text-decoration: none;
    color: #fff;
    background: #0288d1;
    padding: 6px 14px; /* Smaller padding for more compact links */
    border-radius: 15px; /* Rounded corners */
    font-size: 12px; /* Reduced font size */
    font-weight: bold;
    text-align: center;
    width: 50%; /* Narrower link width */
    max-width: 250px;
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.1);
    transition: background 0.3s, transform 0.3s, box-shadow 0.3s;
}

main a:hover {
    background: #01579b;
    transform: translateY(-2px);
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.15);
}

main a:active {
    transform: scale(0.95);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

/* Footer styling */
footer {
    background: #81d4fa;
    color: #333;
    padding: 15px 0;
    text-align: center;
    box-shadow: 0 -4px 6px rgba(0, 0, 0, 0.1);
}

footer p {
    margin: 0;
    font-size: 14px;
    color: #333;
}

/* Responsive design for smaller screens */
@media (max-width: 768px) {
    header {
        padding: 20px 0;
    }

    header nav ul {
        flex-direction: column;
        align-items: center;
        gap: 10px;
    }

    main a {
        font-size: 10px;
        padding: 5px 10px;
        width: 70%;
    }
}