body {
    margin: 0;
    font-family: sans-serif;
    background-color: #f4f4f4;
    color: #212121;
}

header {
    background-color: #2196F3;
    color: white;
    padding: 10px 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

main {
    padding: 20px;
}

.frontend-nav {
    background-color: #1976D2;
}

.frontend-nav .menu,
.frontend-nav .submenu {
    list-style: none;
    margin: 0;
    padding: 0;
}

.frontend-nav .menu > li {
    display: inline-block;
    position: relative;
}

.frontend-nav .menu > li > a {
    color: white;
    padding: 12px 16px;
    display: block;
    text-decoration: none;
}

.frontend-nav .submenu {
    display: none;
    position: absolute;
    background-color: white;
    top: 100%;
    left: 0;
    min-width: 180px;
    z-index: 1000;
    border: 1px solid #ccc;
}

.frontend-nav .submenu li a {
    color: #333;
    padding: 10px 14px;
    display: block;
    text-decoration: none;
}

.frontend-nav .submenu li a:hover {
    background-color: #f0f0f0;
}

.frontend-nav .submenu.open {
    display: block;
}


/* Responsive Layout */
body, html {
    margin: 0;
    padding: 0;
    font-family: sans-serif;
}

.site-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 20px;
    flex-wrap: wrap;
}

.logo img {
    height: auto;
    max-height: 60px;
}

.main-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

.main-nav li {
    position: relative;
}

.main-nav .dropdown {
    cursor: pointer;
}

.main-nav ul ul {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    flex-direction: column;
    background: white;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.main-nav li:hover > ul {
    display: flex;
}

@media (max-width: 768px) {
    .main-nav ul {
        flex-direction: column;
        display: none;
    }

    .main-nav.show ul {
        display: flex;
    }

    .mobile-toggle {
        display: block;
        cursor: pointer;
        font-size: 24px;
    }
}

.mobile-toggle {
    display: none;
}