/* General layout */
body {
    font-family: 'Roboto', sans-serif;
    background-color: #f7f9fc;
    color: #2d4059;
    margin: 0;
    padding: 0;
    line-height: 1.6;
}
#container {
    max-width: 1200px;
    margin: 40px auto;
    padding: 20px;
    background: #ffffff;
    border-radius: 20px;
    box-shadow: 0px 8px 25px rgba(0, 0, 0, 0.15);
}
#navitabs {
    display: flex;
    justify-content: space-around;
    background: linear-gradient(135deg, #a0c4ff, #bde0fe);
    padding: 15px 20px;
    margin-bottom: 30px;
    border-radius: 15px;
    flex-wrap: wrap;
}
.navitab {
    color: #2d4059;
    text-decoration: none;
    padding: 10px 15px;
    border-radius: 8px;
    font-weight: 500;
    transition: background-color 0.3s ease, transform 0.2s ease;
    text-align: center;
    flex: 1 0 auto;
}
.navitab:hover {
    background-color: #d7e3fc;
    transform: scale(1.05);
}
.activenavitab {
    background-color: #d7e3fc;
    font-weight: bold;
}
h1, h2, h3 {
    color: #52616b;
    margin-bottom: 15px;
    text-align: center;
}
h2 {
    font-size: 2.2rem;
    font-weight: bold;
}
p, ul {
    line-height: 1.8;
    margin-bottom: 20px;
    text-align: justify;
    color: #52616b;
}
a {
    color: #89b4f8;
    text-decoration: none;
    font-weight: 600;
}
a:hover {
    text-decoration: underline;
}
footer {
    text-align: center;
    margin-top: 30px;
    padding: 15px 0;
    background-color: #52616b;
    color: white;
    border-radius: 10px;
    font-size: 0.9em;
}
button {
    background: #a0c4ff;
    color: #2d4059;
    padding: 12px 20px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
}
button:hover {
    background: #89b4f8;
    transform: translateY(-2px);
}

/* Responsiveness */
@media (max-width: 768px) {
    #container {
        padding: 15px;
    }
    #navitabs {
        flex-direction: column;
        align-items: center;
    }
    .navitab {
        margin-bottom: 10px;
        flex: none;
        width: 90%;
    }
    h2 {
        font-size: 1.8rem;
    }
    p, ul {
        font-size: 0.9rem;
    }
}
@media (max-width: 480px) {
    h2 {
        font-size: 1.5rem;
    }
    button {
        padding: 10px 15px;
        font-size: 0.9rem;
    }
}