/* --- HEADER --- */
.main-header {
    background: var(--surface-color);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}
.main-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo {
    font-size: 1.8rem;
    font-weight: 700;
}

.logo-point {
    color: var(--accent-color);
}

.logo-commun {
    color: var(--primary-color);
}
.main-nav ul { list-style: none; display: flex; }
.main-nav ul li { margin-left: 30px; }
.main-nav ul li a {
    font-weight: 600;
    padding-bottom: 5px;
    border-bottom: 2px solid transparent;
    transition: all 0.3s ease;
}
.main-nav ul li a:hover,
.main-nav ul li a.active {
    color: var(--primary-color);
    border-bottom-color: var(--accent-color);
}

.nav-toggle {
    display: none;
    cursor: pointer;
    border: none;
    background: transparent;
    padding: 0;
    z-index: 1001;
}

.hamburger {
    display: block;
    position: relative;
    width: 25px;
    height: 3px;
    background: var(--secondary-color);
    transition: all 0.2s ease-in-out;
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--secondary-color);
    transition: all 0.2s ease-in-out;
}

.hamburger::before {
    top: -8px;
}

.hamburger::after {
    bottom: -8px;
}

/* --- RESPONSIVE HEADER --- */
@media (max-width: 768px) {
    .nav-toggle {
        display: block;
    }

    .main-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--surface-color);
        box-shadow: 0 2px 5px rgba(0,0,0,0.05);
        z-index: 1000;
    }

    .main-nav.nav-open {
        display: block;
    }

    .main-nav ul {
        flex-direction: column;
        align-items: center;
        padding: 1rem 0;
    }

    .main-nav ul li {
        margin: 1rem 0;
    }
}