/* ============================================
   NAVBAR VISITEUR (Viewer)
   ============================================ */
.navbar {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 70px;
    background: var(--bg-glass);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--border-glass);
    display: flex; justify-content: space-between; align-items: center;
    padding: 0 6%; /* <-- Espacement unifié */
    z-index: 1000;
}

.navbar-brand { display: flex; align-items: center; text-decoration: none; }
.navbar-logo { height: 45px; transition: transform 0.3s ease; } /* <-- Taille unifiée */
.navbar-brand:hover .navbar-logo { transform: scale(1.05); }

.navbar-links { display: flex; gap: 25px; align-items: center; }

.navbar-links a {
    color: var(--text-paragraph);
    text-decoration: none; font-size: 14px; font-weight: 500;
    transition: all 0.3s ease; position: relative;
}

.navbar-links a:hover, .navbar-links a.active { color: var(--color-highlight); }

.navbar-links a::after {
    content: ''; position: absolute;
    bottom: -5px; left: 0;
    width: 0%; height: 2px;
    background-color: var(--color-highlight);
    transition: width 0.3s ease;
}

.navbar-links a:hover::after, .navbar-links a.active::after { width: 100%; }

/* Bouton Contact Spécifique au Visiteur */
.nav-contact-btn {
    background: rgba(37, 106, 244, 0.1);
    border: 1px solid rgba(37, 106, 244, 0.3);
    padding: 8px 16px; border-radius: 8px;
    color: var(--color-highlight) !important;
}
.nav-contact-btn::after { display: none !important; }
.nav-contact-btn:hover { background: var(--color-highlight); color: #fff !important; transform: translateY(-2px); }