/* Base Styles */
body {
    margin: 0;
    font-family: 'Roboto', sans-serif;
}

/* Header and Navbar Styles */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

ul {
    display: flex;
    list-style: none;
    padding: 0;
    margin: 0;
}

li {
    margin: 0 10px;
}

/* Media Queries for Responsiveness */
@media (max-width: 640px) {
    /* Mobile styles */
    nav {
        flex-direction: column;
        align-items: flex-start;
    }

    ul {
        flex-direction: column;
        display: none; /* Hide by default */
        width: 100%;
        padding: 10px 0;
    }

    /* Show menu when active */
    .navbar-active ul {
        display: flex;
    }

    .menu-toggle {
        display: block;
        cursor: pointer;
    }

    .menu-toggle span {
        display: block;
        width: 30px;
        height: 4px;
        background: white;
        margin: 5px auto;
        transition: all 0.3s;
    }
}

@media (min-width: 641px) and (max-width: 1024px) {
    /* Tablet styles */
    nav {
        flex-direction: row;
    }

    ul {
        display: flex;
    }
}

@media (min-width: 1025px) {
    /* Desktop styles */
    nav {
        justify-content: space-between;
    }

    ul {
        display: flex;
    }
}