.header {

    background-color: var(--white);

    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);

    position: fixed;

    width: 100%;

    top: 0;

    z-index: 1000;

}



.header .container {

    display: flex;

    justify-content: space-between;

    align-items: center;

    padding: 15px 0;

}



.logo img {

    height: 50px;

}



.navbar {

    display: flex;

    align-items: center;

}



.nav-menu {

    display: flex;

    list-style: none;

}



.nav-menu li {

    margin-left: 30px;

}



.nav-menu a {

    text-decoration: none;

    color: var(--dark-gray);

    font-weight: 600;

    transition: color 0.3s ease;

    position: relative;

}



.nav-menu a:hover {

    color: var(--primary-color);

}



.nav-menu a::after {

    content: '';

    position: absolute;

    bottom: -5px;

    left: 0;

    width: 0;

    height: 2px;

    background-color: var(--primary-color);

    transition: width 0.3s ease;

}



.nav-menu a:hover::after {

    width: 100%;

}



.hamburger {

    display: none;

    flex-direction: column;

    cursor: pointer;

}



.bar {

    display: block;

    width: 25px;

    height: 3px;

    margin: 3px 0;

    background-color: var(--dark-gray);

    transition: all 0.3s ease;

}