/* =========================================================
   header.css : barre de navigation (bureau + mobile)
   ========================================================= */

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
}

.nav {
    max-width: 1100px;
    height: var(--header-h);
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--text);
    font-size: 1.2rem;
    font-weight: 700;
    text-decoration: none;
}

.brand i {
    color: var(--link);
}

.menu {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    list-style: none;
}

.menu .link {
    display: inline-block;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm);
    color: var(--muted);
    font-weight: 500;
    text-decoration: none;
}

.menu .link:hover {
    background: var(--surface-2);
    color: var(--text);
}

.toggle {
    display: none;
    padding: 0.5rem 0.65rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text);
    font-size: 1.2rem;
    cursor: pointer;
}

/* ---------- Mobile ---------- */

@media (max-width: 760px) {
    .toggle {
        display: inline-flex;
    }

    .menu {
        display: none;
        position: absolute;
        top: var(--header-h);
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 0.4rem;
        padding: 1rem;
        background: var(--surface);
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow);
    }

    .menu-open .menu {
        display: flex;
    }

    .menu .link {
        padding: 0.75rem;
    }

    .menu .btn {
        width: 100%;
    }
}