/**
 * Site header.
 * Mobile: logo + toggle, nav as a full-width panel below.
 * Desktop (≥ 75rem): inline nav + red B2B button.
 *
 * Overlay: the header is positioned absolutely, transparent, ON TOP of the
 * first chalkboard block (hero / page header) — the chalkboard runs through
 * without a seam. That block reserves the room via --header-h (set in CSS as a
 * fallback, measured exactly by js/header.js).
 * Solid (body.header-solid, pages that don't start dark): same position,
 * but with its own chalkboard background; main gets the padding instead.
 * Stuck (.site-header--stuck, js/header.js): fixed, compact, white
 * background, slides in from the top after scrolling past the header.
 * Open (.site-header--open, js/menu.js, mobile only): the same white look,
 * fixed over the whole viewport; the page behind doesn't scroll.
 */
:root {
    --header-h: 6rem;
    /* Compact stuck header (measured by js/header.js) — anchor jumps keep
       their target clear of it, plus the admin bar and some breathing room */
    --header-stuck-h: 4.5rem;
    --scroll-offset: calc(var(--header-stuck-h) + var(--wp-admin--admin-bar--height, 0px) + 1.5rem);
}

html {
    scroll-padding-top: var(--scroll-offset);
}

/* The admin bar is not fixed below 600px — it scrolls away */
@media (max-width: 600px) {
    :root {
        --scroll-offset: calc(var(--header-stuck-h) + 1.5rem);
    }
}

@media (min-width: 75rem) {
    :root {
        --header-h: 9.625rem;
    }

    .page-template-page-landing {
        --header-h: 7.5rem;
    }
}

body {
    position: relative; /* containing block for the header (respects the admin bar margin) */
}

.site-header {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    isolation: isolate;
    color: var(--color-text-inverse);
}

.site-header :focus-visible {
    outline-color: var(--color-focus-on-dark);
}

/* Own chalkboard background: solid mode + stuck state */
.site-header::before,
.site-header::after {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    opacity: 0;
    pointer-events: none;
}

.site-header::before {
    background: var(--color-dark);
}

.site-header::after {
    background: url('../assets/images/tafel.webp') center / cover no-repeat;
}

.header-solid .site-header::before,
.site-header--stuck::before,
.site-header--open::before {
    opacity: 1;
}

.header-solid .site-header::after,
.site-header--stuck::after {
    opacity: .58;
}

.header-solid .site-main {
    padding-top: var(--header-h);
}

/* Overlay: the first dark block starts under the header */
.header-overlay .site-main > .page-header:first-child .page-header__inner {
    padding-top: calc(var(--header-h) + clamp(2rem, 1.5rem + 2vw, 3rem));
}

.header-overlay .entry-content > .vc_row:first-child .my-hero,
.header-overlay .entry-content > .wpb-content-wrapper > .vc_row:first-child .my-hero {
    padding-top: calc(var(--header-h) + clamp(2rem, 1.5rem + 2.5vw, 4rem));
}

/* ---------- Stuck (sticky after scrolling) + open mobile menu: white ---------- */
.site-header__logo-dark {
    display: none;
}

.site-header--stuck {
    position: fixed;
    top: var(--wp-admin--admin-bar--height, 0px);
    color: var(--color-text);
    box-shadow: 0 10px 30px -18px rgba(32, 32, 29, .45), 0 1px 0 var(--color-border);
    animation: header-slide-in .35s var(--ease-out) both;
}

.site-header.site-header--stuck::before,
.site-header.site-header--open::before {
    background: var(--color-surface);
}

.site-header.site-header--stuck::after,
.site-header.site-header--open::after {
    opacity: 0; /* no chalk texture on white */
}

.site-header--stuck :focus-visible,
.site-header--open :focus-visible {
    outline-color: var(--color-focus);
}

.site-header--stuck .site-header__logo-light,
.site-header--open .site-header__logo-light {
    display: none;
}

.site-header--stuck .site-header__logo-dark,
.site-header--open .site-header__logo-dark {
    display: block;
}

/* Open mobile menu: full-screen layer, scrolls on its own if it's taller */
.site-header.site-header--open {
    position: fixed;
    top: var(--wp-admin--admin-bar--height, 0px);
    bottom: 0;
    overflow-y: auto;
    overscroll-behavior: contain;
    background: var(--color-surface); /* ::before only covers the first screen once the layer scrolls */
    color: var(--color-text);
}

.has-menu-open {
    overflow: hidden;
    scrollbar-gutter: stable; /* keep the scrollbar's room — otherwise the layout (and the toggle) jumps */
}

.site-header--stuck .site-header__toggle,
.site-header--open .site-header__toggle {
    color: var(--color-text);
    box-shadow: inset 0 0 0 1.5px var(--color-border);
}

.site-header--stuck .site-nav__list a,
.site-header--open .site-nav__list a {
    border-bottom-color: var(--color-border-soft);
    color: var(--color-text);
}

.site-header--stuck .site-nav__list a:hover,
.site-header--stuck .site-nav__list .current-menu-item > a,
.site-header--stuck .site-nav__list .current-menu-ancestor > a,
.site-header--stuck .site-nav__list .current_page_parent > a,
.site-header--open .site-nav__list a:hover,
.site-header--open .site-nav__list .current-menu-item > a,
.site-header--open .site-nav__list .current-menu-ancestor > a,
.site-header--open .site-nav__list .current_page_parent > a {
    color: var(--color-text);
}

/* The dropdown stays a dark panel — keep its links light */
.site-header--stuck .site-nav__list .sub-menu a {
    color: var(--color-text-inverse-muted);
}

.site-header--stuck .site-nav__list .sub-menu a:hover {
    color: var(--color-text-inverse);
}

.site-header.site-header--stuck .site-header__subtitle,
.site-header.site-header--open .site-header__subtitle {
    border-left-color: var(--color-border);
    color: var(--color-accent-text);
}

/* Outline buttons (landing phone button) on white */
.site-header--stuck .btn-chalk,
.site-header--open .btn-chalk {
    color: var(--color-text);
    box-shadow: inset 0 0 0 1.5px var(--color-border);
}

.site-header--stuck .btn-chalk:hover,
.site-header--open .btn-chalk:hover {
    background: transparent;
    color: var(--color-text);
    box-shadow: inset 0 0 0 1.5px var(--color-text);
}

@keyframes header-slide-in {
    from { transform: translateY(-100%); }
    to   { transform: none; }
}

@media (prefers-reduced-motion: reduce) {
    .site-header--stuck {
        animation: none;
    }
}

/* The admin bar is not fixed below 600px — stick to the very top there */
@media (max-width: 600px) {
    .site-header--stuck,
    .site-header.site-header--open {
        top: 0;
    }
}

.site-header--stuck .site-header__inner {
    min-height: 4.5rem;
    padding-block: .5rem;
}

.site-header--stuck .site-header__logo img {
    height: 3.5rem;
}

.site-header__inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    min-height: 6rem;
    padding-block: .75rem;
}

.site-header__logo {
    display: block;
    flex: none;
}

.site-header__logo img {
    width: auto;
    height: 4.5rem;
}

/* ---------- Toggle ---------- */
.site-header__toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    padding: 0;
    border: 0;
    border-radius: var(--radius-pill);
    background: transparent;
    color: var(--color-text-inverse);
    box-shadow: inset 0 0 0 1.5px rgba(245, 242, 233, .35);
    cursor: pointer;
}

.site-header__toggle-close,
.site-header__toggle[aria-expanded="true"] .site-header__toggle-open {
    display: none;
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-close {
    display: block;
}

/* ---------- Nav (mobile panel) ---------- */
.site-nav {
    display: none;
    flex-basis: 100%;
    padding-block: .5rem 1.25rem;
}

.site-nav.is-open {
    display: block;
}

/* No JS → nav always visible, toggle hidden */
html:not(.js) .site-nav {
    display: block;
}

html:not(.js) .site-header__toggle {
    display: none;
}

.site-nav__list {
    margin: 0;
    padding: 0;
    list-style: none;
}

.site-nav__list a {
    display: block;
    padding: .75rem 0;
    border-bottom: 1px solid var(--color-border-on-dark);
    color: var(--color-text-inverse);
    font-size: 1.25rem;
    font-weight: var(--font-weight-bold);
    letter-spacing: .03em;
}

.site-nav__list a:hover,
.site-nav__list .current-menu-item > a,
.site-nav__list .current-menu-ancestor > a,
.site-nav__list .current_page_parent > a {
    color: var(--color-text-inverse);
}

.site-nav__list .sub-menu {
    margin: 0;
    padding: 0 0 0 1rem;
    list-style: none;
}

.site-nav__cta {
    margin-top: 1.25rem;
    width: 100%;
}

/* ---------- Desktop ---------- */
@media (min-width: 75rem) {
    .site-header__inner {
        flex-wrap: nowrap;
        min-height: 9.625rem;
    }

    .site-header__logo img {
        height: 7.625rem;
    }

    .site-header__toggle,
    html:not(.js) .site-header__toggle {
        display: none;
    }

    .site-nav,
    .site-nav.is-open {
        display: flex;
        align-items: center;
        gap: 1rem;
        flex-basis: auto;
        padding: 0;
    }

    .site-nav__list {
        display: flex;
        align-items: center;
        gap: 1.125rem;
    }

    .site-nav__list > li {
        position: relative;
    }

    .site-nav__list > li > a {
        padding: 0 0 .3125rem;
        border-bottom: 2px solid transparent;
        font-size: 1rem;
        transition: color var(--transition-fast), border-color var(--transition-fast);
    }

    .site-nav__list > li > a:hover {
        border-bottom-color: rgba(245, 242, 233, .5);
    }

    .site-header--stuck .site-nav__list > li > a {
        border-bottom-color: transparent;
    }

    .site-header--stuck .site-nav__list > li > a:hover {
        border-bottom-color: var(--color-border);
    }

    .site-header--stuck .site-nav__list > .current-menu-item > a,
    .site-header--stuck .site-nav__list > .current-menu-ancestor > a,
    .site-header--stuck .site-nav__list > .current_page_parent > a {
        border-bottom-color: var(--color-accent);
    }

    .site-nav__list > .current-menu-item > a,
    .site-nav__list > .current-menu-ancestor > a,
    .site-nav__list > .current_page_parent > a {
        border-bottom-color: var(--color-accent);
    }

    /* Dropdown — opens on hover and on keyboard focus inside */
    .site-nav__list .sub-menu {
        position: absolute;
        top: 100%;
        left: -1.25rem;
        z-index: 50;
        min-width: 14rem;
        padding: .75rem 1.25rem;
        border-radius: var(--radius-sm);
        background: var(--color-dark);
        box-shadow: var(--shadow-float);
        opacity: 0;
        visibility: hidden;
        transform: translateY(.5rem);
        transition: opacity var(--transition-fast), transform var(--transition-fast), visibility 0s .2s;
    }

    .site-nav__list li:hover > .sub-menu,
    .site-nav__list li:focus-within > .sub-menu {
        opacity: 1;
        visibility: visible;
        transform: none;
        transition-delay: 0s;
    }

    .site-nav__list .sub-menu a {
        border-bottom: 0;
        padding: .5rem 0;
        font-size: 1rem;
        font-weight: var(--font-weight-text);
    }

    .site-nav__cta {
        width: auto;
        margin: 0 0 0 1rem;
        min-height: 2.875rem;
        padding: .8125rem 1.375rem;
        font-size: .90625rem;
        white-space: nowrap;
    }
}

/* Wide screens: room for the larger nav */
@media (min-width: 87.5rem) {
    .site-nav__list {
        gap: 1.75rem;
    }

    .site-nav__list > li > a {
        font-size: 1.0625rem;
    }
}

/* ---------- Landing page variant ---------- */
.site-header__subtitle {
    display: none;
}

.site-header--landing .site-header__logo {
    display: flex;
    align-items: center;
    gap: 1.125rem;
}

.site-header--landing .site-header__subtitle {
    display: block;
    padding-left: 1.125rem;
    border-left: 1px solid var(--color-border-on-dark);
    font-size: .90625rem;
    font-weight: var(--font-weight-bold);
    line-height: 1.3;
    color: var(--color-accent-on-dark);
}

.site-nav__phone svg {
    flex: none;
}

@media (min-width: 75rem) {
    .site-header--landing .site-header__logo img {
        height: 5.5rem;
    }

    .site-header--landing .site-header__inner {
        min-height: 7.5rem;
    }

    .site-header--landing .site-nav__list {
        gap: 1.5rem;
    }

    .site-header--landing .site-nav__cta + .site-nav__cta {
        margin-left: .25rem;
    }
}

/* Anchor targets: a little air above the section when jumped to */
[id] {
    scroll-margin-top: 1rem;
}

@media (min-width: 75rem) {
    .site-header--stuck .site-header__inner,
    .site-header--landing.site-header--stuck .site-header__inner {
        min-height: 5rem;
    }

    .site-header--stuck .site-header__logo img,
    .site-header--landing.site-header--stuck .site-header__logo img {
        height: 3.75rem;
    }
}

/* ---------- Scroll to top ---------- */
.to-top {
    position: fixed;
    right: clamp(1rem, 2.5vw, 1.75rem);
    bottom: clamp(1rem, 2.5vw, 1.75rem);
    z-index: 90;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    border-radius: var(--radius-pill);
    background: var(--color-dark);
    color: var(--color-text-inverse);
    box-shadow: inset 0 0 0 1.5px rgba(245, 242, 233, .3), 0 12px 24px -12px rgba(0, 0, 0, .6);
    transition: opacity var(--transition), transform var(--transition), visibility 0s, background-color var(--transition-fast);
}

.to-top:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

.to-top:focus-visible {
    outline: 2px solid var(--color-focus);
    outline-offset: 3px;
}

.js .to-top:not(.is-visible) {
    opacity: 0;
    visibility: hidden;
    transform: translateY(.75rem);
    transition: opacity var(--transition), transform var(--transition), visibility 0s .25s;
}

/* Landing page: above the sticky contact bar */
body:has(.landing-bar) .to-top {
    bottom: 5.25rem;
}

@media (prefers-reduced-motion: reduce) {
    .to-top,
    .js .to-top:not(.is-visible) {
        transform: none;
    }
}