body {
    background-color: #1e1e1e;
    color: #c5c8c6;
    font-family: "Courier New", Courier, monospace;
    text-align: center;
    padding: 50px;
}
h1 {
    color: #8abeb7;
}
.menu {
    display: flex;
    flex-direction: column;
    gap: 20px;
    align-items: center;
    margin-top: 40px;
}
.btn {
    padding: 15px 30px;
    font-size: 1.2em;
    font-family: inherit;
    color: white;
    text-decoration: none;
    border-radius: 8px;
    width: 200px;
    text-align: center;
    transition: transform 0.2s ease;
}
.btn:hover {
    transform: scale(1.05);
}
.btn-integer { background-color: #005f87; }
.btn-real { background-color: #5fa8af; }
.btn-char { background-color: #d78700; }
.btn-boolean { background-color: #875fa8; }
.btn-general { background-color: #00875f; }


footer {
    margin-top: 40px;
    text-align: center;
    font-size: 0.8em;
    color: #999;
}
footer .logo {
    max-height: 60px;
    margin-top: 10px;
}