/*
 * Theme — Header + site menu overlay
 * Desktop grid: 5 columns × 256 + 16 gap inside a 48px container.
 */

/* ── Header ─────────────────────────────────────────────────────────────── */
.site-header {
    position:   sticky;
    top:        0;
    z-index:    calc(var(--z-modal) + 1); /* above the menu overlay, also while it fades out */
    color:      var(--color-dark);
    background: var(--header-bg);
    transition: transform .3s ease, box-shadow .3s ease, color .75s ease, background-color .75s ease;
}
.admin-bar .site-header { top: 32px; }

/* Hides while scrolling down, comes back on scroll up (js/main.js) */
.site-header.is-scrolled { box-shadow: 0 1px 0 var(--color-border); }
.site-header.is-hidden   { transform: translateY(-100%); }

@media (max-width: 782px) {
    .admin-bar .site-header { top: 46px; }
}
@media (max-width: 600px) {
    .admin-bar .site-header { top: 0; }
}

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

.site-header__inner {
    display:     flex;
    align-items: center;
    gap:         16px;
    padding:     24px 0;
}

.site-header__logo {
    display:     flex;
    flex:        0 0 calc((100% - 64px) / 5 * 2 + 16px);
    align-items: center;
    height:      24px;
}
.site-header__logo .logo {
    display: block;
    width:   100px;
    height:  24px;
}

.site-header__toggle {
    display:     flex;
    flex:        0 0 calc((100% - 64px) / 5 * 2 + 16px);
    align-items: center;
    gap:         6px;
    padding:     0;
    font:        inherit;
    color:       inherit;
    background:  none;
    border:      0;
    cursor:      pointer;
}
.site-header__toggle-label { line-height: var(--line-height); }
.site-header__toggle:hover { opacity: .6; }

.menu-dots {
    display:   flex;
    flex-wrap: wrap;
    gap:       2px;
    width:     8px;
}
.menu-dots i {
    display:    block;
    width:      3px;
    height:     3px;
    background: currentColor;
}

.site-header__cta {
    display:         flex;
    flex:            0 0 calc((100% - 64px) / 5);
    align-items:     center;
    gap:             8px;
    color:           inherit;
    text-decoration: none;
}
.site-header__cta-dot {
    width:       6px;
    height:      6px;
    background:  currentColor;
}
.site-header__cta-label { flex: 1; }
.site-header__cta:hover { opacity: .6; }

/* Menu open: the header sits above the overlay, turns light on dark, "Menu" becomes "Close" */
body.is-menu-open .site-header {
    color:      var(--color-light);
    background: transparent;
    box-shadow: none;
    transform:  none;
    transition: transform .3s ease, box-shadow .3s ease, color .45s ease, background-color .45s ease; /* opening */
}
body.is-menu-open .menu-dots { rotate: 45deg; }
.menu-dots { transition: rotate .75s cubic-bezier(.4, 0, .2, 1); }

/* ── Site menu overlay ──────────────────────────────────────────────────── */
.site-menu {
    position:   fixed;
    inset:      0;
    z-index:    var(--z-modal);
    overflow-y: auto;
    overscroll-behavior: contain;
    opacity:    0;
    visibility: hidden;
    transition: opacity .75s cubic-bezier(.4, 0, .2, 1), visibility 0s linear .75s; /* closing */
}
.site-menu.is-open {
    opacity:    1;
    visibility: visible;
    transition:       opacity .45s cubic-bezier(.4, 0, .2, 1); /* opening */
}
.admin-bar .site-menu { top: 32px; }
/* Items drift down and fade a little ahead of the overlay when it closes (opening is staggered in motion.css) */
.site-menu__nav > * {
    opacity:    0;
    translate:  0 16px;
    transition: opacity .55s ease, translate .55s ease;
}
.site-menu.is-open .site-menu__nav > * {
    opacity:    1;
    translate:  0 0;
    transition: opacity .6s ease .15s, translate .6s cubic-bezier(.2, .7, .2, 1) .15s;
}
@media (prefers-reduced-motion: reduce) {
    .site-menu, .site-menu__nav > *, .menu-dots, .site-header { transition: none !important; }
}
.site-menu:focus { outline: none; }

.site-menu__grid { position: fixed; }

.site-menu__inner {
    position:       relative;
    display:        flex;
    flex-direction: column;
    min-height:     100%;
    padding-top:    96px; /* the header (24 + 24 + 24) stays above the overlay */
}

.site-menu__nav {
    flex:        1;
    display:     flex;
    gap:         16px;
    padding:     136px 0 120px;
}

.site-menu__group { flex: 0 0 calc((100% - 64px) / 5); }
.site-menu__group--practices { margin-left: calc((100% - 64px) / 5 + 16px); }

.site-menu__aside {
    display:        flex;
    flex:           0 0 calc((100% - 64px) / 5);
    flex-direction: column;
    gap:            24px;
}
.site-menu__aside .site-menu__group { flex: 0 0 auto; }
.site-menu__cta { margin-top: auto; width: 100%; }
/* Desktop: the header CTA stays visible above the overlay, so the menu has no second one (tablet/mobile hide the header CTA, so it stays there) */
@media (min-width: 1024px) {
    .site-menu__cta { display: none; }
}

.site-menu__heading { margin: 0 0 24px; line-height: var(--line-height); }
.site-menu__group--practices .site-menu__heading,
.site-menu__group--language .site-menu__heading { margin-bottom: 16px; }

.site-menu__toggle {
    display:         flex;
    align-items:     center;
    justify-content: space-between;
    width:           100%;
    padding:         0;
    font:            inherit;
    color:           inherit;
    text-align:      left;
    background:      none;
    border:          0;
}
.site-menu__toggle:disabled { cursor: default; color: inherit; }

.site-menu__title,
.site-menu__heading {
    font-size:      var(--fs-lead);
    font-weight:    var(--fw-medium);
    letter-spacing: var(--ls-tight);
    color:          var(--color-on-dark-muted);
}

.site-menu__icons { display: none; }
.site-menu__icon-minus { display: none; }

.site-menu__list {
    display:        flex;
    flex-direction: column;
    margin:         0;
    padding:        0;
    list-style:     none;
}
.site-menu__list a {
    display:         block;
    color:           var(--color-light);
    text-decoration: none;
}
.site-menu__list a:hover { opacity: .6; }

.site-menu__list--sm { gap: 8px; }
.site-menu__list--lg { gap: 16px; }
.site-menu__list--lg a {
    font-size:      var(--fs-title);
    font-weight:    var(--fw-medium);
    line-height:    var(--line-height);
    letter-spacing: -0.04em;
}

.site-menu__lang-current {
    display:     flex;
    align-items: center;
    gap:         8px;
    list-style:  none;
    cursor:      pointer;
    font-size:   var(--fs-title);
    font-weight: var(--fw-medium);
    line-height: var(--line-height);
    letter-spacing: -0.04em;
    color:       var(--color-light);
}
.site-menu__lang-current::-webkit-details-marker { display: none; }
.site-menu__lang[open] .icon-arrow-down { transform: rotate(180deg); }
.site-menu__lang-list {
    margin:     8px 0 0;
    padding:    0;
    list-style: none;
}
.site-menu__lang-list a {
    display:         block;
    padding:         4px 0;
    font-size:       var(--fs-lead);
    color:           var(--color-on-dark-muted);
    text-decoration: none;
}
.site-menu__lang-list a:hover { color: var(--color-light); }

/* ── Tablet / mobile ────────────────────────────────────────────────────── */
@media (max-width: 1023px) {
    .site-header__inner { justify-content: space-between; }
    .site-header__logo,
    .site-header__toggle { flex: 0 0 auto; }
    .site-header__cta { display: none; }

    .site-menu__inner { padding-top: 72px; }

    .site-menu__nav {
        flex-direction: column;
        gap:            24px;
        padding:        32px 0 32px;
    }

    .site-menu__group,
    .site-menu__group--practices,
    .site-menu__aside { flex: 0 0 auto; margin-left: 0; }

    .site-menu__heading,
    .site-menu__group--practices .site-menu__heading { margin: 0; }

    .site-menu__toggle { cursor: pointer; }
    .site-menu__icons { display: flex; color: var(--color-on-dark-faint); }
    .site-menu__group.is-open .site-menu__icon-plus { display: none; }
    .site-menu__group.is-open .site-menu__icon-minus { display: block; }

    .site-menu__panel { display: none; padding-top: 16px; }
    .site-menu__group.is-open .site-menu__panel { display: block; }

    .site-menu__list--sm { gap: 12px; }

    .site-menu__aside { flex: 1; }
    .site-menu__group--language .site-menu__heading { margin-bottom: 16px; }
}

@media (max-width: 767px) {
}

/* ── Academy (/academy/) ────────────────────────────────────────────────── */
.site-header__logo { gap: 4px; align-items: flex-end; }
.site-header__logo .logo-suffix {
    padding-bottom: 2px;
    font-size:      var(--fs-body);
    line-height:    1;
    letter-spacing: var(--ls-base);
    white-space:    nowrap;
}
.site-header__logo { height: auto; align-items: flex-end; }

/* Menu: Language | Learning | — | About | CTA on a 5-column grid (grid is unavoidable here) */
@media (min-width: 1024px) {
    .site-menu--academy .site-menu__nav {
        display:               grid;
        grid-template-columns: repeat(5, minmax(0, 1fr));
        grid-template-rows:    auto 1fr;
        column-gap:            16px;
        row-gap:               0;
        align-items:           start;
    }
    .site-menu--academy .site-menu__group--academy_learning { grid-column: 2; grid-row: 1; margin: 0; }
    .site-menu--academy .site-menu__group--academy_about    { grid-column: 4; grid-row: 1; margin: 0; }
    .site-menu--academy .site-menu__group--language         { grid-column: 1; grid-row: 1; }
    .site-menu--academy .site-menu__move { grid-column: 1; grid-row: 2; align-self: end; }
    .site-menu--academy .site-menu__cta  { grid-column: 5; grid-row: 2; align-self: end; margin: 0; }
    .site-menu--academy .site-menu__list--lg { gap: 12px; }
}
.site-menu--academy .site-menu__list--lg a { letter-spacing: var(--ls-tight); }

.site-menu__move {
    display:     flex;
    align-items: center;
    gap:         8px;
    color:       var(--color-light);
}
.site-menu__move .link-arrow__label { flex: 1; }

@media (max-width: 1023px) {
    .site-menu--academy .site-menu__nav { padding-bottom: 80px; }
    .site-menu--academy .site-menu__list--lg { gap: 12px; }
    .site-menu--academy .site-menu__move { margin-top: auto; }
    .site-menu--academy .site-menu__cta { margin-top: 0; }
}