/* Navigation modernisée */
.main-nav {
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    z-index: 1000;
    padding: 1rem 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
    margin: 0;
    padding: 0;
    align-items: center;
}

.nav-link {
    text-decoration: none;
    font-weight: 500;
    font-size: 1.2rem;
    color: #4a5568;
    padding: 0.5rem 0;
    position: relative;
    transition: color 0.3s ease;
    white-space: nowrap;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    transition: width 0.3s ease;
}

.nav-link:hover {
    color: #2d3748;
}

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

.nav-link.active {
    color: #667eea;
    font-weight: 600;
}

.nav-link.logout {
    margin-top: auto;
    color: #ef4444;
}

.nav-link.logout:hover {
    background: rgba(239, 68, 68, 0.08);
    color: #dc2626;
}

.nav-link.logout .nav-icon {
    color: currentColor;
}


/* Lang switcher */
.lang-switcher {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: #f7fafc;
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    border: 1px solid #e2e8f0;
    flex-shrink: 0;
}

.lang-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    padding: 0.375rem 0.5rem;
    border-radius: 30px;
    transition: all 0.2s ease;
    color: #718096;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
}

.lang-btn.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    box-shadow: 0 2px 4px rgba(102, 126, 234, 0.2);
}

.lang-btn:hover:not(.active) {
    background: #e2e8f0;
    color: #4a5568;
}

.lang-separator {
    color: #cbd5e0;
    font-size: 0.75rem;
}

.flag-icon {
    width: 25px;
    height: auto;
    border-radius: 2px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.lang-btn.active .flag-icon {
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

/* Responsive design */
@media (max-width: 768px) {
    .main-nav {
        padding: 0.75rem 0;
    }

    .nav-container {
        flex-direction: column;
        gap: 1rem;
        padding: 0 1rem;
    }

    .nav-links {
        gap: 2rem;
        flex-wrap: wrap;
        justify-content: center;
    }

    .nav-link {
        font-size: 1.1rem;
    }

    .lang-switcher {
        order: 2;
        /* Force le sélecteur de langue après les liens */
        align-self: center;
    }

    .lang-btn {
        font-size: 0.75rem;
        padding: 0.25rem 0.5rem;
        gap: 0.375rem;
    }

    .flag-icon {
        width: 18px;
    }
}

@media (max-width: 480px) {
    .nav-container {
        flex-direction: column;
        gap: 1rem;
        padding: 0 1rem;
    }

    .nav-links {
        gap: 1.5rem;
    }

    .nav-link {
        font-size: 1.1rem;
    }

    .lang-switcher {
        padding: 0.25rem 0.5rem;
    }

    .lang-btn span {
        display: none;
        /* Cache le texte sur très petits écrans, ne garde que le drapeau */
    }

    .lang-btn {
        font-size: 0.75rem;
        padding: 0.25rem 0.375rem;
    }

    .flag-icon {
        width: 20px;
    }
}

/* Support du mode sombre */
@media (prefers-color-scheme: dark) {
    .main-nav {
        background: rgba(26, 32, 44, 0.95);
        border-bottom-color: rgba(255, 255, 255, 0.05);
    }

    .nav-link {
        color: #a0aec0;
    }

    .nav-link:hover {
        color: #e2e8f0;
    }

    .lang-switcher {
        background: #2d3748;
        border-color: #4a5568;
    }

    .lang-btn {
        color: #a0aec0;
    }

    .lang-btn:hover:not(.active) {
        background: #4a5568;
        color: #e2e8f0;
    }

    .flag-icon {
        box-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    }
}