.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100px;
    background-color: #fff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    padding: 0 20px;
}
.logo {
    font-size: 28px;
    font-weight: 700;
    color: #333;
}
.nav-links {
    display: flex;
    gap: 60px;
}
.nav-links a {
    text-decoration: none;
    color: #333;
    font-size: 18px;
    font-weight: 600;
}
.search-box {
    position: relative;
}
.search-box input {
    width: 200px;
    height: 40px;
    border: 1px solid #ccc;
    border-radius: 4px;
    padding: 0 40px 0 10px;
    font-size: 16px;
}
.search-box .material-icons {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    color: #999;
}

.footer {
    background-color: #333;
    color: #fff;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    margin-top: 20px;
}
.footer-left {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 20px;
}
.footer-left img {
    width: 50px;
    height: auto;
}
.footer-left p {
    margin: 0;
    font-size: 14px;
}
.footer-right {
    display: flex;
    margin: 0 auto;
    gap: 20px;
}
.footer-right a {
    text-decoration: none;
    color: #fff;
    font-size: 14px;
}
.footer-bottom {
    background-color: #222;
    color: #fff;
    text-align: center;
    padding: 10px;
    font-size: 12px;
}
.back-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    display: none;
    width: 50px;
    height: 50px;
    background-color: #CDDC39;
    color: #fff;
    border-radius: 50%;
    text-align: center;
    line-height: 60px;
    cursor: pointer;
    z-index: 1000;
}
.back-to-top .material-icons {
    font-size: 24px;
}

@media (max-width: 768px) {
    .nav {
        flex-direction: column;
        height: auto;
        padding: 10px;
    }
    .logo, .nav-links, .search-box {
        margin-bottom: 10px;
    }
    .nav-links {
        flex-direction: column;
        gap: 5px;
    }
    .nav-links a {
        font-size: 16px;
    }
    .footer {
        flex-direction: column;
        align-items: center;
    }
    .footer-left, .footer-right {
        margin: 10px 0;
    }
    .footer-right {
        flex-direction: column;
    }
    .footer-right a {
        margin: 5px 0;
    }
}