header {
    width: 100%;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 100px;
    background: #f5f5f5;
    box-shadow: 0 15px 15px rgba(0, 0, 0, 0.05);
}

.logo img {
    width: 44px;
    height: 44px;
}

.hamburger {
    display: none;
}

.nav-bar.active {
    border-top: 1px solid #4682B4;
    height: calc(100vh - 80px);
}

.nav-bar.active ul {
    opacity: 1;
}

.nav-bar ul {
    gap: 30px;
    display: flex;
    position: relative;
}

.nav-bar ul li {
    list-style: none;
}

.nav-bar ul li a {
    position: relative;
    display: block;
    text-decoration: none;
    font-size: 0.9em;
    color: #4682B4;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    font-weight: bold;
    font-family: 'Montserrat', sans-serif;
}

.nav-bar ul li a::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    background: #4682B4;
    bottom: -2px;
    transform: scaleX(0);
    transition: transform 0.5s ease-in-out;
    transform-origin: right;
}

.nav-bar ul li a:hover:before {
    transform: scaleX(1);
    transform-origin: left;
}