/* Navigation commune : utilise les variables du thème actif, défini dans app.css ou theme.css. */
/* Même police et graisse de base que l’accueil, indépendamment de la typographie du contenu. */
.site-header { padding: 16px 0; border-bottom: 1px solid #ffffff15; font-family: Arial, sans-serif; font-weight: 400; }
.site-header__inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.site-brand { display: flex; align-items: center; gap: 12px; color: var(--text); text-decoration: none; font-size: 25px; font-weight: 700; }
.site-brand img { display: block; flex: none; width: 64px; height: 64px; }
.site-brand__caption { display: block; font-size: 12px; font-weight: 400; color: var(--muted); margin-top: 4px; }
.site-header .site-nav { width: auto; margin: 0; }
.site-nav__list { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; list-style: none; margin: 0; padding: 0; }
.site-nav__list a, .site-nav__pending { display: block; padding: 10px 12px; border-radius: 5px; font-size: 15px; font-weight: 400; letter-spacing: normal; }
.site-nav__list a { color: var(--text); text-decoration: none; }
.site-nav__list a:hover, .site-nav__list a[aria-current="page"] { color: var(--accent); background: var(--surface); }
.site-nav__pending { color: var(--muted); cursor: default; }
.site-nav__list a.site-nav__contact { color: var(--background); background: var(--accent); font-weight: 700; }
.site-nav__list a.site-nav__contact:hover { filter: brightness(1.1); }
.site-nav__notice { font-size: 11px; color: var(--muted); margin: 6px 12px 0; text-align: right; }
.nav-toggle {
    display: none;
    place-items: center;
    flex: none;
    width: 44px;
    height: 44px;
    padding: 0;
    border: 1px solid #ffffff20;
    border-radius: 10px;
    background: var(--surface);
    color: var(--text);
    cursor: pointer;
}
.nav-toggle:hover, .nav-toggle[aria-expanded="true"] { color: var(--accent); }
.nav-toggle__icon { position: relative; width: 20px; height: 16px; }
.nav-toggle__icon::before, .nav-toggle__icon::after {
    content: '';
    position: absolute;
    left: 0;
    top: 7px;
    width: 100%;
    height: 2px;
    border-radius: 2px;
    background: currentColor;
}
.nav-toggle__icon::before { transform: translateY(-5px); }
.nav-toggle__icon::after { transform: translateY(5px); }
.nav-toggle[aria-expanded="true"] .nav-toggle__icon::before { transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__icon::after { transform: rotate(-45deg); }
/* Le focus visible et le lien d'évitement rendent la navigation utilisable au clavier. */
.site-header a:focus-visible, .nav-toggle:focus-visible, .skip-link:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
.skip-link { position: absolute; left: 16px; top: 0; transform: translateY(-120%); z-index: 10; padding: 12px 18px; background: var(--text); color: var(--background); text-decoration: none; }
.skip-link:focus { top: 12px; transform: none; }
@media (max-width: 900px) {
    .site-header__inner { flex-wrap: wrap; gap: 16px; }
    .site-brand { font-size: 22px; }
    .site-brand img { width: 52px; height: 52px; }
    .site-header .site-nav { width: 100%; }
    .site-nav__list { align-items: stretch; flex-direction: column; gap: 4px; }
    .site-nav__list a, .site-nav__pending { padding: 13px 12px; }
    .site-nav__notice { text-align: left; margin-top: 12px; }
    /* Ces règles ne se déclenchent qu'une fois les événements du menu installés. */
    .site-header.is-enhanced .nav-toggle { display: grid; }
    .site-header.is-enhanced:not(.is-open) .site-nav { display: none; }
}
/* Sur mobile, les langues se déplient dans le flux de la navigation. */
.language-switch details { position: relative; }
.language-switch summary {
    display: flex;
    align-items: center;
    gap: 6px;
    width: fit-content;
    min-height: 40px;
    padding: 8px 12px;
    border-radius: 5px;
    color: var(--text);
    list-style: none;
    cursor: pointer;
}
.language-switch summary::-webkit-details-marker { display: none; }
.language-switch summary:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }
.language-switch summary:hover, .language-switch details[open] summary { color: var(--accent); background: var(--surface); }
.language-switch__options { list-style: none; padding: 4px; margin: 4px 0 0; }
.language-switch a[aria-current="true"] { color: var(--accent); text-decoration: underline; text-underline-offset: .3em; }
@media (width > 900px) {
    .language-switch__options {
        position: absolute;
        z-index: 1;
        inset-inline-end: 0;
        min-width: 124px;
        border: 1px solid #ffffff25;
        border-radius: 6px;
        background: var(--background);
    }
}

/* Le header reste visible au-dessus du contenu en mode bureau. */
@media (width > 900px) {
    html { scroll-padding-top: 112px; }
    .site-header { position: sticky; top: 0; z-index: 5; background: var(--background); }
    .skip-link:focus { position: fixed; }
}