.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--color-border);
    background: var(--color-background);
    transition: transform .25s ease;
}

.site-header.is-hidden {
    transform: translateY(-100%);
}

.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    min-height: 80px;
}

/* ==========================================================
   Mobile Header
========================================================== */

.menu-toggle {
    display: none;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    gap: .35rem;
    width: 3rem;
    height: 3rem;
    margin-left: auto;
    padding: 0;
    background: none;
    border: 0;
    cursor: pointer;
    z-index: 10002;
}

.menu-toggle span {
    width: 1.8rem;
    height: 3px;
    border-radius: 3px;
    background: var(--color-text);
    transition: transform .3s ease, opacity .3s ease;
}

.menu-toggle.is-active span:nth-child(1) {
    transform: translateY(.48rem) rotate(45deg);
}

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

.menu-toggle.is-active span:nth-child(3) {
    transform: translateY(-.48rem) rotate(-45deg);
}

body.menu-open {
    overflow: hidden;
}

@media (max-width: 900px) {

    .site-header .container {
        min-height: 70px;
    }

    .menu-toggle {
        display: flex;
    }

}