/* =====================================================================
   layout.css — header, footer, navigation
   ===================================================================== */

/* ---- Topbar institutionnelle (au-dessus du header) ---- */

.topbar {
    background: var(--brand-institutional);
    color: rgba(255, 255, 255, .85);
    font-size: var(--fs-xs);
    padding: .5rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, .08);
    overflow: hidden;
}
.topbar__inner {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    flex-wrap: wrap;
    justify-content: center;
}
.topbar__item {
    display: inline-flex; align-items: center; gap: .4rem;
    line-height: 1.2;
}
.topbar__item { color: rgba(255, 255, 255, .92); }
.topbar__item--pulse { color: #fff; font-weight: 600; }
.topbar__dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--brand-gold);
    box-shadow: 0 0 0 4px rgba(200, 163, 90, .25);
    animation: pulse-soft 2.6s ease-out infinite;
}
@keyframes pulse-soft {
    0%, 100% { transform: scale(1); }
    50%      { transform: scale(1.25); }
}
@media (prefers-reduced-motion: reduce) { .topbar__dot { animation: none; } }
.topbar__sep {
    width: 4px; height: 4px;
    border-radius: 50%;
    background: rgba(255, 255, 255, .25);
    flex-shrink: 0;
}
.topbar__link {
    color: rgba(255, 255, 255, .85);
    font-weight: 500;
    padding: .1rem .2rem;
    transition: color var(--t-fast);
}
.topbar__link:hover { color: var(--brand-gold); }

@media (max-width: 768px) {
    .topbar { padding: .55rem 0; font-size: 11px; }
    .topbar__inner { gap: .85rem; }
    .topbar__sep,
    .topbar__item:nth-child(3) { display: none; }
}
@media (max-width: 480px) {
    .topbar__item:nth-child(1)::after { content: none; }
}

/* ---- Site header (glassmorphism sticky) ---- */

.site-header {
    position: sticky; top: 0; z-index: var(--z-nav);
    background: rgba(255, 255, 255, .88);
    -webkit-backdrop-filter: saturate(180%) blur(14px);
    backdrop-filter: saturate(180%) blur(14px);
    border-bottom: 1px solid rgba(226, 232, 240, .8);
    transition: background var(--t), box-shadow var(--t);
}
.site-header.is-scrolled {
    background: rgba(255, 255, 255, .96);
    box-shadow: 0 6px 20px rgba(15, 23, 42, .05);
}
.site-header__inner {
    display: flex; align-items: center; justify-content: space-between;
    gap: 1rem; padding-block: .85rem;
}

.site-logo {
    display: inline-flex; align-items: center; gap: .65rem;
    color: var(--brand-dark);
    font-family: var(--font-title); font-weight: 700;
    font-size: 1.1rem;
}
.site-logo:hover { color: var(--brand-primary); }
.site-logo__mark { display: inline-flex; }
.site-logo__text strong { font-weight: 700; }
.site-logo__text span { color: var(--c-text-mute); font-weight: 500; }

/* Nav */

.main-nav {
    display: flex; align-items: center; gap: 1.5rem;
}
.main-nav__list {
    display: flex; align-items: center; gap: 1.25rem;
}
.main-nav__list > li > a {
    color: var(--brand-dark);
    font-weight: 500; font-size: var(--fs-sm);
    padding: .5rem 0;
    position: relative;
}
.main-nav__list > li > a:hover { color: var(--brand-primary-d); }

.nav-pill {
    background: linear-gradient(135deg, rgba(14, 165, 233, .12), rgba(6, 182, 212, .12));
    color: var(--brand-primary-d) !important;
    padding: .45rem .9rem !important;
    border-radius: var(--radius-full);
    font-size: var(--fs-sm); font-weight: 600;
}

.nav-cta { font-size: var(--fs-sm); }

.has-dropdown { position: relative; }
.dropdown {
    position: absolute; top: 100%; left: -1rem;
    padding: var(--sp-6); margin-top: .5rem;
    background: #fff;
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    min-width: 640px;
    display: grid; grid-template-columns: 1fr 1fr 1fr; gap: var(--sp-6);
    opacity: 0; pointer-events: none;
    transform: translateY(8px);
    transition: opacity var(--t), transform var(--t);
}
.has-dropdown:hover .dropdown,
.has-dropdown:focus-within .dropdown {
    opacity: 1; pointer-events: auto; transform: translateY(0);
}
.dropdown__col h4 {
    font-size: var(--fs-xs); text-transform: uppercase; letter-spacing: .1em;
    color: var(--c-text-mute); font-family: var(--font-body); margin-bottom: .65rem;
}
.dropdown__col a {
    display: block; padding: .45rem 0;
    color: var(--brand-dark); font-size: var(--fs-sm); font-weight: 500;
}
.dropdown__col a:hover { color: var(--brand-primary); padding-left: .25rem; }

/* Nav toggle (mobile) */

.nav-toggle {
    display: none;
    width: 44px; height: 44px;
    flex-direction: column; align-items: center; justify-content: center; gap: 5px;
    border-radius: var(--radius);
}
.nav-toggle span {
    display: block; width: 22px; height: 2px;
    background: var(--brand-dark);
    transition: transform var(--t), opacity var(--t);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 1023px) {
    .nav-toggle { display: flex; }
    .main-nav {
        position: fixed; inset: 64px 0 0 0;
        background: #fff;
        flex-direction: column; align-items: stretch; justify-content: flex-start;
        padding: 1.5rem;
        gap: 1rem;
        transform: translateX(100%);
        transition: transform var(--t);
        overflow-y: auto;
    }
    .main-nav.is-open { transform: translateX(0); }
    .main-nav__list { flex-direction: column; align-items: stretch; gap: 0; }
    .main-nav__list > li > a {
        display: block; padding: 1rem 0;
        border-bottom: 1px solid var(--c-border);
        font-size: var(--fs-base);
    }
    .dropdown {
        position: static; opacity: 1; pointer-events: auto; transform: none;
        box-shadow: none; border: 0; padding: .5rem 0 1rem 1rem;
        grid-template-columns: 1fr; min-width: auto; margin-top: 0;
    }
    .nav-cta { width: 100%; }
}

/* ---- Site footer ---- */

.site-footer {
    background: linear-gradient(180deg, var(--brand-institutional), var(--brand-darker));
    color: rgba(255, 255, 255, .82);
    margin-top: var(--sp-16);
    position: relative;
}

/* Signature institutionnelle (bandeau haut) */
.site-footer__signature {
    background:
        radial-gradient(ellipse at bottom right, rgba(200, 163, 90, .12), transparent 60%),
        rgba(255, 255, 255, .03);
    border-bottom: 1px solid rgba(255, 255, 255, .08);
    padding: clamp(2.5rem, 5vw, 4rem) 0;
}
.site-footer__signature-inner {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--sp-8);
    align-items: center;
}
@media (min-width: 900px) {
    .site-footer__signature-inner { grid-template-columns: 1.4fr 1fr; }
}
.site-footer__signature-kicker {
    font-size: var(--fs-xs);
    text-transform: uppercase;
    letter-spacing: .18em;
    color: var(--brand-gold);
    font-weight: 700;
    margin-bottom: var(--sp-3);
}
.site-footer__signature-title {
    color: #fff;
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    line-height: 1.2;
    margin: 0;
}
.site-footer__signature-title em {
    font-style: italic;
    color: var(--brand-gold);
}
.site-footer__signature-meta {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--sp-4);
}
.site-footer__signature-meta > div {
    text-align: center;
    padding: var(--sp-4) var(--sp-2);
    background: rgba(255, 255, 255, .04);
    border: 1px solid rgba(255, 255, 255, .08);
    border-radius: var(--radius);
}
.site-footer__signature-meta strong {
    display: block;
    font-family: var(--font-display);
    font-size: clamp(1.6rem, 3vw, 2rem);
    color: var(--brand-gold);
    line-height: 1;
    margin-bottom: .35rem;
    font-weight: 600;
}
.site-footer__signature-meta span {
    font-size: var(--fs-xs);
    color: rgba(255, 255, 255, .7);
}

.site-footer .container { padding-top: var(--sp-16); padding-bottom: var(--sp-8); }
.site-footer__grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1fr 1fr;
    gap: var(--sp-8);
    margin-bottom: var(--sp-12);
}
@media (max-width: 1200px) { .site-footer__grid { grid-template-columns: 1.4fr 1fr 1fr; } }
@media (max-width: 768px)  { .site-footer__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px)  { .site-footer__grid { grid-template-columns: 1fr; } }

.site-footer__col h4 {
    color: #fff; font-size: var(--fs-base);
    margin-bottom: var(--sp-4); font-family: var(--font-body); font-weight: 600;
}
.site-footer__col ul li { margin-bottom: .65rem; }
.site-footer__col a {
    color: rgba(255, 255, 255, .7);
    font-size: var(--fs-sm); transition: color var(--t-fast);
}
.site-footer__col a:hover { color: var(--brand-accent); }

.site-footer__col--brand p {
    margin-top: var(--sp-4);
    color: rgba(255, 255, 255, .65);
    font-size: var(--fs-sm); line-height: 1.65;
}
.site-logo--footer { color: #fff; }
.site-logo--footer .site-logo__text span { color: rgba(255, 255, 255, .55); }

.site-footer__badges { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: var(--sp-4); }
.badge {
    display: inline-flex; align-items: center; gap: .35rem;
    background: rgba(255, 255, 255, .08);
    color: rgba(255, 255, 255, .9);
    padding: .35rem .75rem;
    border-radius: var(--radius-full);
    font-size: var(--fs-xs); font-weight: 500;
    border: 1px solid rgba(255, 255, 255, .1);
}

.site-footer__bottom {
    border-top: 1px solid rgba(255, 255, 255, .1);
    padding-top: var(--sp-6);
    display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 1rem;
    color: rgba(255, 255, 255, .6);
    font-size: var(--fs-xs);
}
.site-footer__bottom a { color: rgba(255, 255, 255, .8); }
.site-footer__bottom a:hover { color: #fff; }