.burger-menu {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    cursor: pointer;
    z-index: 1000;
    position: relative;
}

.burger-menu span {
    display: block;
    width: 100%;
    height: 3px;
    background-color: #333;
    border-radius: 3px;
    transition: all 0.3s ease;
}

.burger-menu.active span:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
}

.burger-menu.active span:nth-child(2) {
    opacity: 0;
}

.burger-menu.active span:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
}

body.menu-open {
    overflow: hidden;
}

.menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

.mobile-nav {
    position: fixed;
    top: 0;
    left: -320px;
    width: 320px;
    height: 100%;
    background-color: #fff;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
    z-index: 999;
    padding: 60px 20px 30px;
    transition: left 0.3s ease;
    overflow-y: auto;
}

.mobile-nav.active {
    left: 0;
}
.close-button {
    position: absolute;
    top: 15px;
    right: 15px;
    width: 30px;
    height: 30px;
    background: none;
    border: none;
    font-size: 24px;
    line-height: 1;
    cursor: pointer;
    color: #333;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
}

.close-button:hover {
    color: #000;
}

.mobile-nav nav ul {
    display: flex;
    flex-direction: column;
    padding: 0;
    margin: 0 0 30px;
}

.mobile-nav nav ul li {
    margin: 0;
    padding: 0;
    list-style: none;
}

.mobile-nav nav ul li a {
    display: block;
    padding: 12px 0;
    border-bottom: 1px solid #eee;
    text-decoration: none;
    color: #333;
    font-weight: 500;
}

.mobile-nav nav ul li a:hover {
    color: #000;
}

.mobile-nav .cta-button {
    text-align: center;
    margin-top: 20px;
}

@media (max-width: 768px) {
    .burger-menu {
        display: flex;
    }
    
    header .container {
        position: relative;
    }
}