/* Navbar moderne — Global Advice
   Transparente en haut de page (sur le héro sombre), devient un bandeau
   flottant en verre dépoli dès qu'on scrolle. */

.site-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    padding: 1.1rem 1.25rem 0;
    transition: padding 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.site-nav .nav-inner {
    position: relative;
    max-width: 1220px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.85rem 1.75rem;
    border-radius: 9999px;
    background: rgba(255, 255, 255, 0);
    border: 1px solid rgba(255, 255, 255, 0.16);
    box-shadow: none;
    backdrop-filter: blur(0px);
    -webkit-backdrop-filter: blur(0px);
    transition: background 0.4s cubic-bezier(0.4, 0, 0.2, 1),
                border-color 0.4s cubic-bezier(0.4, 0, 0.2, 1),
                box-shadow 0.4s cubic-bezier(0.4, 0, 0.2, 1),
                backdrop-filter 0.4s cubic-bezier(0.4, 0, 0.2, 1),
                padding 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.site-nav.nav-scrolled { padding-top: 0.7rem; }

.site-nav.nav-scrolled .nav-inner {
    background: rgba(255, 255, 255, 0.86);
    border-color: rgba(6, 19, 43, 0.07);
    box-shadow: 0 14px 34px -16px rgba(6, 19, 43, 0.32), 0 2px 10px -4px rgba(6, 19, 43, 0.1);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    padding: 0.65rem 1.5rem;
}

.nav-logo {
    height: 4rem;
    width: auto;
    object-fit: contain;
    filter: brightness(0) invert(1);
    transition: filter 0.4s ease, height 0.4s ease;
}

.site-nav.nav-scrolled .nav-logo {
    filter: none;
    height: 3.5rem;
}

.nav-links { gap: 2.25rem; }

.nav-link {
    position: relative;
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: rgba(255, 255, 255, 0.82);
    padding-bottom: 3px;
    transition: color 0.3s ease;
}

.nav-link::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 100%;
    height: 2px;
    background: currentColor;
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link:hover { color: #ffffff; }
.nav-link:hover::after,
.nav-link.active::after { transform: scaleX(1); transform-origin: left; }
.nav-link.active { color: #ffffff; }

.site-nav.nav-scrolled .nav-link { color: #55627a; }
.site-nav.nav-scrolled .nav-link:hover { color: #06132b; }
.site-nav.nav-scrolled .nav-link.active { color: #2563eb; }

.nav-cta {
    background: rgba(255, 255, 255, 0.96);
    color: #06132b;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
    transition: background 0.3s ease, color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}
.nav-cta:hover { background: #ffffff; transform: translateY(-1px); box-shadow: 0 10px 24px -8px rgba(6, 19, 43, 0.35); }

.site-nav.nav-scrolled .nav-cta { background: #06132b; color: #ffffff; }
.site-nav.nav-scrolled .nav-cta:hover { background: #142545; }

.nav-burger { color: rgba(255, 255, 255, 0.92); transition: color 0.3s ease; }
.site-nav.nav-scrolled .nav-burger { color: #06132b; }

@media (max-width: 1023px) {
    .site-nav {
        padding: 0.75rem 0.9rem 0;
    }

    .site-nav .nav-inner {
        padding: 0.65rem 0.85rem;
        border-radius: 9999px;
    }

    .nav-logo {
        height: 3rem;
        max-width: 9.5rem;
    }

    .site-nav.nav-scrolled .nav-logo {
        height: 2.65rem;
    }

    #mobile-menu {
        position: fixed;
        top: 5.35rem;
        left: 0.9rem;
        right: 0.9rem;
        width: auto;
        border-radius: 1rem;
        overflow: hidden;
    }
}

@media (max-width: 420px) {
    .site-nav {
        padding-left: 0.75rem;
        padding-right: 0.75rem;
    }

    .nav-logo {
        height: 2.55rem;
        max-width: 8rem;
    }

    .site-nav.nav-scrolled .nav-logo {
        height: 2.35rem;
    }
}

/* Halo doux derrière la home, discret : ajoute de la profondeur sans surcharger */
.text-gradient-accent {
    background: linear-gradient(100deg, #ffffff 0%, #9fc1ff 55%, #4d8dff 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.bg-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(90px);
    pointer-events: none;
    z-index: 0;
}

@media (prefers-reduced-motion: reduce) {
    .site-nav, .site-nav .nav-inner, .nav-logo, .nav-link, .nav-link::after, .nav-cta {
        transition: none;
    }
}