/**
 * Barre de navigation commune — alignée sur index.html
 */
.navbar {
    display: none;
}

.top-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.5rem 3rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
    background: transparent;
    backdrop-filter: blur(0px);
    -webkit-backdrop-filter: blur(0px);
    transition: transform 0.3s ease, opacity 0.3s ease;
    transform: translateY(0);
    opacity: 1;
}

.top-logo {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    text-decoration: none;
    color: rgba(255, 255, 255, 0.95);
    font-family: 'Space Grotesk', sans-serif;
    letter-spacing: 2px;
    text-transform: uppercase;
    font-size: 0.95rem;
    user-select: none;
}

.top-logo img {
    width: 28px;
    height: 28px;
    object-fit: contain;
    filter: drop-shadow(0 0 12px rgba(119, 224, 245, 0.18));
}

.top-bar.hidden {
    transform: translateY(-100%);
    opacity: 0;
    /* Pas de pointer-events: none — la barre est déplacée hors zone ; sinon les clics
       restaient « mangés » par une couche invisible sur toute la largeur sur certains navigateurs. */
}

.top-nav-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    justify-content: flex-end;
    flex-wrap: wrap;
}

.top-nav-link {
    font-family: 'Inter', sans-serif;
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 400;
    letter-spacing: 1.1px;
    text-transform: uppercase;
    padding: 0.65rem 1.35rem;
    border-radius: 0;
    background: transparent;
    border: none;
    border-bottom: 1px solid rgba(119, 224, 245, 0.2);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: visible;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
}

.top-nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 1px;
    pointer-events: none;
    background: linear-gradient(90deg, transparent, #77E0F5, transparent);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateX(-50%);
}

.top-nav-link:hover {
    color: #77E0F5;
    border-bottom-color: rgba(119, 224, 245, 0.4);
    transform: translateY(-1px);
    letter-spacing: 1.65px;
}

.top-nav-link:hover::after {
    width: 100%;
}

.top-nav-link[aria-current="page"] {
    color: #77E0F5;
    border-bottom-color: rgba(119, 224, 245, 0.6);
}

.lang-selector {
    display: flex;
    gap: 0.4rem;
    align-items: center;
    position: relative;
    z-index: 2;
    background: linear-gradient(45deg, rgba(34, 80, 113, 0.1), rgba(119, 224, 245, 0.1));
    padding: 0.2rem;
    border-radius: 20px;
    border: 1px solid rgba(119, 224, 245, 0.3);
    box-shadow: 0 0 10px rgba(119, 224, 245, 0.2);
    transition: all 0.3s ease;
}

.lang-selector:hover {
    background: linear-gradient(45deg, rgba(34, 80, 113, 0.2), rgba(119, 224, 245, 0.2));
    box-shadow: 0 0 20px rgba(119, 224, 245, 0.4), 0 0 30px rgba(34, 80, 113, 0.3);
    transform: scale(1.05);
}

.lang-option {
    font-family: 'Inter', sans-serif;
    color: #77E0F5;
    cursor: pointer;
    padding: 0.2rem 0.5rem;
    border-radius: 15px;
    transition: all 0.3s ease;
    font-weight: 500;
    font-size: 0.8rem;
    opacity: 0.8;
    position: relative;
    overflow: hidden;
}

.lang-option:hover {
    opacity: 1;
    background: linear-gradient(45deg, rgba(34, 80, 113, 0.2), rgba(119, 224, 245, 0.2));
    color: #8ae8ff;
    transform: scale(1.05);
    box-shadow: 0 0 10px rgba(119, 224, 245, 0.4);
}

.lang-option.active {
    background: linear-gradient(45deg, #225071, #77E0F5);
    opacity: 1;
    color: #FFFFFF;
    box-shadow: 0 0 15px rgba(119, 224, 245, 0.5);
    transform: scale(1.1);
}

.lang-option::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    pointer-events: none;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.lang-option:hover::before {
    left: 100%;
}

@media (max-width: 1100px) {
    .top-bar { padding: 1.2rem 2rem; }
    .top-nav-links { gap: 1rem; }
    .top-nav-link { padding: 0.52rem 1rem; font-size: 0.76rem; letter-spacing: 1px; }
}

@media (max-width: 900px) {
    .top-bar { padding: 1rem 1.5rem; gap: 0.75rem; }
    .top-nav-links { gap: 0.5rem; }
    .top-nav-link { font-size: 0.72rem; padding: 0.45rem 0.65rem; letter-spacing: 0.85px; }
}

@media (max-width: 768px) {
    .top-bar { padding: 1rem 1.2rem; gap: 0.5rem; }
    .top-nav-links { gap: 0.42rem; }
    .top-nav-link { font-size: 0.69rem; padding: 0.4rem 0.6rem; letter-spacing: 0.65px; }
}

@media (max-width: 644px) {
    .top-bar {
        padding: 0.75rem 0.85rem;
        gap: 0.38rem;
    }
    .top-logo { display: none; }
    .top-nav-links {
        gap: 0.28rem;
        justify-content: center;
        width: 100%;
    }
    .top-nav-link {
        font-size: 0.62rem;
        padding: 0.28rem 0.45rem;
        letter-spacing: 0.52px;
    }
}

@media (max-width: 480px) {
    .top-bar {
        padding: 0.6rem 0.5rem;
        gap: 0.35rem;
    }
    .top-nav-links { gap: 0.3rem; }
    .top-nav-link {
        font-size: 0.6rem;
        padding: 0.24rem 0.38rem;
        letter-spacing: 0.42px;
        border-bottom: none;
    }
    .lang-selector {
        gap: 0.2rem;
        padding: 0.1rem;
    }
    .lang-option {
        font-size: 0.7rem;
        padding: 0.1rem 0.3rem;
    }
}