.site-header {
    height: var(--header-height);
    position: sticky;
    top: 0;
    z-index: 30;
    background: var(--grey-dark);
    transition: transform var(--duration) var(--ease);
}

body.ticket-sheet-open .site-header {
    transform: translateY(-100%);
    pointer-events: none;
}

.header-inner {
    height: 100%;
    display: flex;
    align-items: center;
    gap: 0;
    padding-inline: var(--gutter);
}

.header-brand {
    display: flex;
    align-items: center;
    width: 0;
    opacity: 0;
    visibility: hidden;
    overflow: hidden;
    flex-shrink: 0;
    transition: width var(--duration) var(--ease), opacity var(--duration), margin var(--duration), visibility var(--duration);
}

.header-brand img {
    width: 6rem;
    max-width: none;
}

.header-brand__name {
    color: var(--white);
    font-size: 1rem;
    font-weight: 700;
    white-space: nowrap;
}

.site-header.is-past-hero .header-brand {
    width: 6rem;
    margin-right: var(--space-s);
    opacity: 1;
    visibility: visible;
}

.site-header.is-past-hero .header-brand--text {
    width: 8rem;
}

.city-nav, .header-nav {
    display: flex;
    align-items: center;
    gap: var(--space-xxs);
}

.header-nav {
    margin-left: auto;
}

.header-nav > ul,
.mobile-menu__panel > ul {
    display: contents;
    margin: 0;
    padding: 0;
    list-style: none;
}

.header-nav .btn--primary {
    min-width: 7.5rem;
    justify-content: space-between;
}

.header-menu-toggle,
.mobile-menu {
    display: none;
}

.menu-icon {
    width: .75rem;
    height: .75rem;
    position: relative;
    flex-shrink: 0;
    transform: scale(.9);
    transition: transform var(--duration) var(--ease);
}

.menu-icon::before,
.menu-icon::after {
    content: '';
    position: absolute;
    left: 50%;
    top: 50%;
    background: currentColor;
    transform: translate(-50%, -50%);
}

.menu-icon::before {
    width: 100%;
    height: 1px;
}

.menu-icon::after {
    width: 1px;
    height: 100%;
}

.header-menu-toggle[aria-expanded='true'] .menu-icon {
    transform: scale(1) rotate(45deg);
}

.mobile-menu {
    position: fixed;
    inset: 0;
    z-index: 29;
    pointer-events: none;
}

.mobile-menu.is-open {
    pointer-events: auto;
}

.mobile-menu__backdrop {
    position: absolute;
    inset: var(--header-height) 0 0;
    z-index: 0;
    border: 0;
    padding: 0;
    margin: 0;
    background: rgba(0, 0, 0, 0);
    cursor: default;
    transition: background-color var(--duration) var(--ease);
}

.mobile-menu.is-open .mobile-menu__backdrop {
    background: rgba(0, 0, 0, .75);
    backdrop-filter: blur(5px);
}

.mobile-menu__panel {
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    z-index: 1;
    display: grid;
    gap: var(--space-xxs);
    padding: var(--space-xxs) var(--gutter) var(--space-s);
    background: var(--grey-dark);
    transform: translateY(-100%);
    opacity: 0;
    transition: transform var(--duration) var(--ease), opacity var(--duration) var(--ease);
}

.mobile-menu.is-open .mobile-menu__panel {
    transform: translateY(0);
    opacity: 1;
}

/* Mobile navigation follows the large, full-width action treatment. */
.mobile-menu__panel > ul > li > .btn {
    display: flex;
    width: 100%;
    min-height: var(--button-height-large);
    align-items: center;
    justify-content: space-between;
    padding: var(--space-s) calc(var(--space-s) * 1.5);
    font-size: clamp(1rem, 1.455vw, 1.375rem);
    line-height: 1.3;
}

.mobile-menu__panel > ul > li > .btn .arrow {
    width: .75em;
    height: .75em;
}

@media (max-width: 900px) {
    .header-brand, .site-header.is-past-hero .header-brand {
        display: none;
    }

    .header-inner {
        gap: var(--space-xxs);
    }

    .header-nav {
        display: none;
    }

    .header-menu-toggle {
        display: inline-flex;
        margin-left: auto;
    }

    .mobile-menu {
        display: block;
    }

}

@media (prefers-reduced-motion: reduce) {
    .menu-icon,
    .mobile-menu__panel,
    .mobile-menu__backdrop {
        transition: none;
    }

}