/* ========================================
   HEADER
   ======================================== */
.site-header {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: transparent;
    padding: var(--space-xl) 0;
    transition: all var(--transition-base);
}

.site-header.scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
}

/* ── Header solide (pages internes, sans hero) : dans le flux, fond clair, texte foncé ── */
.site-header--solid {
    position: static;
    background-color: var(--color-background-cream); /* beige, continu avec la bannière */
    border-bottom: 0;
}

.site-header--solid .site-brand-name {
    color: var(--color-primary-darker);
}

.site-header--solid .nav-burger-line {
    background-color: var(--color-primary-darker);
}

/* En desktop, nav + CTA foncés. En mobile ils sont dans le drawer sombre → ils restent blancs. */
@media (min-width: 1421px) {
    .site-header--solid .nav-menu li a {
        color: var(--color-primary-darker);
    }

    .site-header--solid .header-cta .btn-outline {
        border-color: var(--color-primary-darker);
        color: var(--color-primary-darker);
    }

    .site-header--solid .header-cta .btn-outline:hover {
        background-color: var(--color-primary-darker);
        border-color: var(--color-primary-darker);
        color: var(--color-text-white);
    }
}

.header-container {
    width: var(--site-width);
    max-width: none;
    margin: 0 auto;
    padding: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-xl);
}

.site-branding {
    flex-shrink: 0;
}

.site-brand-link {
    display: inline-block;
    text-decoration: none;
}

.site-brand-name {
    font-family: var(--font-display);
    font-style: italic;
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-xl);
    color: var(--color-text-white);
    white-space: nowrap;
    transition: opacity var(--transition-fast);
}

.site-brand-link:hover .site-brand-name {
    opacity: 0.85;
}

.site-title {
    font-size: var(--font-size-2xl);
    margin: 0;
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
}

.site-title:hover {
    color: var(--color-primary);
}

.site-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin: var(--space-xs) 0 0;
}

.main-navigation {
    flex: 1;
}

.nav-menu {
    list-style: none;
    display: flex;
    gap: var(--space-xl);
    align-items: center;
    justify-content: center;
}

.nav-menu li a {
    font-family: var(--font-secondary);
    color: var(--color-text-white);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    padding: var(--space-sm) var(--space-md);
}

/* Souligné animé (cf. components.css) calé sur le texte malgré le padding */
.nav-menu li a::after {
    left: var(--space-md);
    right: var(--space-md);
    bottom: calc(var(--space-sm) - 3px);
}

.header-cta {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

/* Le bouton « Nous contacter » utilise le système générique .btn .btn-outline (components.css) */

/* ── Menu burger + drawer ── */
/* Desktop : le wrapper est « transparent », nav + cta restent des enfants flex du header */
.header-collapse {
    display: contents;
}

.nav-burger {
    display: none; /* visible uniquement en mobile */
    position: relative;
    z-index: 1110;
    width: 40px;
    height: 40px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 0;
    background: none;
    border: 0;
    cursor: pointer;
}

.nav-burger-line {
    display: block;
    width: 26px;
    height: 2px;
    background-color: var(--color-text-white);
    transition: transform var(--transition-base), opacity var(--transition-fast);
}

/* Animation en croix à l'ouverture */
.site-header.nav-open .nav-burger-line:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.site-header.nav-open .nav-burger-line:nth-child(2) { opacity: 0; }
.site-header.nav-open .nav-burger-line:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

.nav-overlay {
    display: none;
}

/* Bloque le scroll de la page quand le menu est ouvert */
body.nav-locked {
    overflow: hidden;
}

/* Responsive — bascule en menu burger */
@media (max-width: 1420px) {
    /* Header sur une ligne : marque à gauche, burger à droite */
    .nav-burger {
        display: flex;
    }

    /* Drawer qui glisse depuis la droite */
    .header-collapse {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: flex-start;
        gap: var(--space-2xl);
        position: fixed;
        top: 0;
        right: 0;
        bottom: 0;
        width: min(80vw, 320px);
        padding: var(--space-5xl) var(--space-2xl);
        background-color: var(--color-primary-darker);
        transform: translateX(100%);
        transition: transform var(--transition-base);
        z-index: 1100;
        overflow-y: auto;
    }

    .site-header.nav-open .header-collapse {
        transform: translateX(0);
        box-shadow: -12px 0 40px rgba(0, 0, 0, 0.35);
    }

    .main-navigation {
        flex: none;
        width: 100%;
    }

    .nav-menu {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-lg);
    }

    .header-cta {
        width: 100%;
    }

    .header-cta .btn {
        width: 100%;
        text-align: center;
    }

    /* Voile sombre derrière le drawer */
    .nav-overlay {
        display: block;
        position: fixed;
        inset: 0;
        background-color: rgba(0, 0, 0, 0.5);
        opacity: 0;
        visibility: hidden;
        transition: opacity var(--transition-base), visibility var(--transition-base);
        z-index: 1090;
    }

    .site-header.nav-open .nav-overlay {
        opacity: 1;
        visibility: visible;
    }
}