.site-header {
    background-color: rgba(18, 18, 18, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--color-border);
    padding: 1rem 0;
    height: var(--header-height);
}

.main-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.brand-logo {
    display: flex;
    align-items: center;
    max-width: 180px;
    color: var(--color-light);
    text-decoration: none;
}

.brand-logo img {
    display: block;
    width: 100%;
    height: auto;
}

.nav-links-desktop {
    display: none;
}

.mobile-menu-toggle {
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    width: 28px;
    height: 24px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 1001;
}

.mobile-menu-toggle span {
    width: 100%;
    height: 3px;
    background: var(--color-light);
    border-radius: var(--border-radius);
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.27, 1.55);
}

body.mobile-menu-active .mobile-menu-toggle span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 6px);
}

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

body.mobile-menu-active .mobile-menu-toggle span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -6px);
}

.mobile-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    height: calc(100vh - var(--header-height));
    background-color: var(--color-dark);
    z-index: 999;
    transform: translateX(100%);
    transition: transform 0.3s ease-in-out;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

body.mobile-menu-active .mobile-menu {
    transform: translateX(0);
}

body.mobile-menu-active {
    overflow: hidden;
}

.mobile-menu a {
    color: var(--color-light);
    font-size: 1.5rem;
    padding: 1rem;
    border-radius: var(--border-radius);
}

.mobile-menu a:hover {
    background-color: var(--color-dark-accent);
}

.mobile-menu hr {
    border: none;
    border-top: 1px solid var(--color-border);
    margin: 1rem 0;
}

.mobile-menu .btn {
    margin-top: 1rem;
    text-align: center;
}