/* ========================================
   HEADER
======================================== */

.site-header {
    width: 100%;
    margin-top: var(--header-top-spacing);
    background-color: var(--color-background);
    color: var(--color-text);
}

.site-header__inner {
    width: calc(100% - 2 * var(--container-padding));
    margin-inline: auto;

    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--header-gap);
}

/* Nom du site */
.site-header__brand {
    flex-shrink: 0;
    color: var(--color-text);
    font-family: var(--font-primary);
    font-size: var(--text-lg);
    font-weight: var(--font-light);
    line-height: 1.2;
    text-decoration: none;
}

/* Navigation */

.site-header__nav {
    min-width: 0;
    margin-left: auto;
}

.site-header__nav ul,
.site-header__menu {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 12px 28px;

    margin: 0;
    padding: 0;
    list-style: none;
}

/* Liens */

.site-header__menu a {
    display: inline-block;
    padding-block: 6px;

    color: var(--color-text);
    font-family: var(--font-primary);
    font-size: 20px;
    font-weight: var(--font-light);
    line-height: 1.4;
    text-decoration: none;

    transition: color 180ms ease;
}


/* Par défaut, tous les liens sont légers */
.site-header__menu a {
    font-weight: var(--font-light);
}

/* Pages internes : lien actif en gras, sauf sur l'accueil */
body:not(.home):not(.front-page)
.site-header__menu .current-menu-item > a,
body:not(.home):not(.front-page)
.site-header__menu .current_page_item > a {
    font-weight: var(--font-bold) !important;
}

/* Accueil et ancres : le JavaScript décide */
body.home .site-header__menu a,
body.front-page .site-header__menu a {
    font-weight: var(--font-light) !important;
}

body.home .site-header__menu a.is-anchor-active,
body.front-page .site-header__menu a.is-anchor-active {
    font-weight: var(--font-bold) !important;
}

/* Survol */

.site-header__menu a:hover {
    color: var(--color-secondary);
}

/* Accessibilité clavier */

.site-header__menu a:focus-visible,
.site-header__brand:focus-visible {
    outline: 2px solid var(--color-secondary);
    outline-offset: 5px;
}

/* ========================================
   TABLETTE
======================================== */

@media (max-width: 900px) {
    .site-header__inner {
        gap: 24px;
    }

    .site-header__menu {
        column-gap: 18px;
    }

    .site-header__menu a {
        font-size: 20px;
    }
}

/* ========================================
   MOBILE
======================================== */

@media (max-width: 600px) {
    .site-header {
        margin-top: 24px;
    }

    .site-header__inner {
        width: calc(100% - 32px);
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }

    .site-header__nav {
        width: 100%;
        margin-left: 0;
    }

    .site-header__menu {
        justify-content: flex-start;
        column-gap: 18px;
        row-gap: 8px;
    }

    .site-header__menu a {
        font-size: 20px;
    }
}

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

.site-header__inner {
    width: calc(100% - 2 * var(--container-padding));
    margin-inline: auto;

    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--header-gap);

    /* Ligne sous le logo et le menu */
    padding-bottom: 7px;
    border-bottom: 1px solid var(--color-text);
}




/* ========================================
   APPARITION DU HEADER AU SCROLL
======================================== */

/* Le header reste en haut de la fenêtre */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;
    width: 100%;
    margin-top: 0;
    padding-top: var(--header-top-spacing);
    background-color: var(--color-background);

    opacity: 0;
    visibility: hidden;
    transform: translateY(-18px);

    transition:
        opacity 350ms ease,
        transform 450ms cubic-bezier(0.16, 1, 0.3, 1),
        visibility 0s linear 450ms;

    will-change: opacity, transform;
}

/* Header visible quand on remonte */
.site-header.is-visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);

    transition:
        opacity 350ms ease,
        transform 450ms cubic-bezier(0.16, 1, 0.3, 1),
        visibility 0s;
}

/* En haut de page : le header est visible */
.site-header.is-at-top {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* Le header reste au-dessus du contenu */
.site-header__inner {
    background-color: var(--color-background);
}

/* Respect des préférences d'accessibilité */
@media (prefers-reduced-motion: reduce) {
    .site-header {
        transition: none;
        transform: none;
    }
}