/* doc-project | assets/css/layout.css | Habille le header sticky, la navigation responsive, la bande de preuves enrichie d’icônes et le footer de la landing CNOC. | Expose: aucun | Dépend de: index.php, assets/css/base.css, assets/js/navigation.js | Impacte: navigation, positionnement du menu mobile, branding, icônes de preuve, responsive et pied de page | Tables: aucune */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 0.75rem 0;
    transition: background 160ms ease, border-color 160ms ease, backdrop-filter 160ms ease;
}

.site-header.is-scrolled {
    background: rgba(6, 16, 29, 0.74);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(18px);
}

.site-header__inner {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.25rem;
}

.site-brand {
    display: inline-flex;
    align-items: center;
    gap: 0.9rem;
    min-width: 0;
    max-width: 100%;
}

.site-brand__logo {
    flex: 0 0 auto;
    display: grid;
    place-items: center;
    width: 3.1rem;
    height: 3.1rem;
    padding: 0.38rem;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 12px 30px rgba(111, 231, 255, 0.14);
}

.site-brand__logo picture {
    display: block;
    width: 100%;
    height: 100%;
}

.site-brand__logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.site-brand__logo-fallback {
    display: grid;
    place-items: center;
    width: 100%;
    height: 100%;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #06101d;
    font-weight: 900;
    font-size: 1.2rem;
}

.site-brand__text {
    display: grid;
    gap: 0.12rem;
    color: var(--muted);
    font-size: 0.9rem;
    min-width: 0;
}

.site-brand__text strong {
    color: var(--text);
    font-size: 1.08rem;
    line-height: 1;
}

.site-brand__text > span:last-child {
    line-height: 1.1;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 1.1rem;
}

.nav-menu__link {
    color: var(--muted-strong);
    font-weight: 600;
    transition: color 160ms ease;
}

.nav-menu__link:hover,
.nav-menu__link:focus-visible {
    color: var(--text);
}

.nav-menu__cta {
    margin-left: 0.5rem;
}

.nav-toggle {
    display: none;
    width: 3rem;
    height: 3rem;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.03);
    color: var(--text);
}

.nav-toggle span {
    display: block;
    width: 1.15rem;
    height: 2px;
    margin: 0.22rem auto;
    border-radius: 999px;
    background: currentColor;
    transition: transform 160ms ease, opacity 160ms ease;
}

.proof-strip {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: calc(var(--radius-lg) + 2px);
}

.proof-strip__item {
    display: flex;
    align-items: flex-start;
    gap: 0.9rem;
    padding: 1.15rem 1.25rem;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.03);
    transition: background 180ms ease, transform 180ms ease;
}

.proof-strip__item:hover {
    transform: translateY(-2px);
    background: rgba(255, 255, 255, 0.055);
}

.proof-strip__icon {
    width: 1.5rem;
    height: 1.5rem;
    margin-top: 0.1rem;
    padding: 0.18rem;
    color: var(--primary);
}

.proof-strip__item div {
    min-width: 0;
}

.proof-strip__item strong {
    display: block;
    margin-bottom: 0.35rem;
    color: var(--text);
    font-size: 1.05rem;
}

.site-footer {
    padding: 2rem 0 3rem;
}

.site-footer__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding-top: 1.25rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.site-footer p {
    margin: 0;
    min-width: 0;
}

@media (max-width: 960px) {
    .nav-toggle {
        display: inline-flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
    }

    .nav-menu {
        position: absolute;
        z-index: 110;
        left: 0;
        right: 0;
        top: calc(100% + 0.5rem);
        display: grid;
        gap: 0.85rem;
        padding: 1rem;
        max-height: calc(100dvh - 6rem);
        overflow-y: auto;
        overscroll-behavior: contain;
        -webkit-overflow-scrolling: touch;
        background: rgba(6, 16, 29, 0.96);
        border: 1px solid rgba(255, 255, 255, 0.08);
        border-radius: 22px;
        opacity: 0;
        visibility: hidden;
        transform: translateY(-8px);
        transition: opacity 160ms ease, transform 160ms ease, visibility 160ms ease;
        box-shadow: var(--shadow);
    }

    .nav-menu.is-open {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    .nav-menu__cta {
        margin-left: 0;
    }

    .proof-strip {
        grid-template-columns: 1fr;
    }

    .site-footer__inner {
        flex-direction: column;
        align-items: flex-start;
    }
}