/* ==========================================
   Modern Frost Header
   ========================================== */

header.page-header {
    position: fixed;
    top: 0;
    right: 0;
    left: 0;
    z-index: 400;

    width: 100%;
    max-width: 100%;
    margin: 0;

    background: rgba(255, 255, 255, 0.94);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);

    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);

    -webkit-transform: translate3d(0, 0, 0);
    transform: translate3d(0, 0, 0);

    -webkit-transition: -webkit-transform 0.22s ease;
    transition: transform 0.22s ease;

    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;

    will-change: transform;
}

/* Fallback for browsers without backdrop-filter */
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
    header.page-header {
        background: rgba(255, 255, 255, 0.98);
    }
}

/* Header hidden */
header.page-header.is-hidden {
    -webkit-transform: translate3d(0, -100%, 0);
    transform: translate3d(0, -100%, 0);
}

/* Header visible */
header.page-header.is-visible {
    -webkit-transform: translate3d(0, 0, 0);
    transform: translate3d(0, 0, 0);
}

/* Placeholder keeps page content below the fixed header */
#header-placeholder {
    display: block;
    width: 100%;
    height: var(--header-height, 120px);
    min-height: var(--header-height, 120px);
    flex-shrink: 0;
    clear: both;
    pointer-events: none;
}

@media (prefers-reduced-motion: reduce) {
    header.page-header {
        -webkit-transition: none;
        transition: none;
    }
}

/* Popup always above header */
[data-popup],
.mfp-wrap,
.fancybox-container,
.lightbox,
.pswp,
.cdz-lightbox,
.modal,
.overlay,
.popup,
.dialog {
    position: fixed !important;
    z-index: 10000 !important;
}