/* ================================================
   HEADER MODERNE - GLASSMORPHISM + MENU BURGER
   ================================================ */

/* RESET DE L'ANCIENNE NAVIGATION */
nav {
    all: unset;
}

/* NOUVEAU HEADER */
.modern-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    z-index: 10000;
    
    /* Glassmorphism */
    background: rgba(5, 8, 20, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    
    /* Bordure subtile */
    border-bottom: 1px solid rgba(0, 210, 255, 0.2);
    
    /* Ombre douce */
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
    
    /* Padding interne */
    padding: 1.2rem 2rem;
    
    /* Transition smooth */
    transition: all 0.3s ease;
}

/* Header au scroll - Plus compact */
.modern-header.scrolled {
    padding: 0.8rem 2rem;
    background: rgba(5, 8, 20, 0.85);
}

/* Container du header */
.header-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* LOGO / NOM */
.header-logo {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--primary);
    text-decoration: none;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    position: relative;
    z-index: 10001;
}

.header-logo:hover {
    color: var(--secondary);
    text-shadow: 0 0 20px rgba(0, 210, 255, 0.6);
}

/* NAVIGATION DESKTOP */
.header-nav {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    font-family: 'Rajdhani', sans-serif;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--white);
    text-decoration: none;
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

/* Effet de fond au survol */
.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 210, 255, 0.2), rgba(0, 255, 234, 0.2));
    transition: all 0.3s ease;
    z-index: -1;
}

.nav-link:hover::before {
    left: 0;
}

.nav-link:hover {
    color: var(--primary);
    text-shadow: 0 0 10px rgba(0, 210, 255, 0.5);
}

/* Lien actif */
.nav-link.active {
    background: linear-gradient(135deg, rgba(0, 210, 255, 0.15), rgba(0, 255, 234, 0.15));
    color: var(--primary);
}

/* BOUTON CTA SPÉCIAL */
.nav-cta {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--darker);
    padding: 0.7rem 1.5rem;
    border-radius: 25px;
    font-weight: 700;
    box-shadow: 0 4px 15px rgba(0, 210, 255, 0.4);
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 210, 255, 0.6);
    color: var(--darker);
}

.nav-cta::before {
    display: none;
}

/* MENU BURGER - Visible sur mobile uniquement */
.burger-menu {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 10001;
    position: relative;
}

.burger-line {
    width: 28px;
    height: 3px;
    background: var(--primary);
    border-radius: 3px;
    transition: all 0.3s ease;
    box-shadow: 0 0 10px rgba(0, 210, 255, 0.5);
}

/* Animation du burger quand ouvert */
.burger-menu.active .burger-line:nth-child(1) {
    transform: rotate(45deg) translateY(11px);
}

.burger-menu.active .burger-line:nth-child(2) {
    opacity: 0;
}

.burger-menu.active .burger-line:nth-child(3) {
    transform: rotate(-45deg) translateY(-11px);
}

/* ================================================
   RESPONSIVE MOBILE
   ================================================ */

@media (max-width: 768px) {
    /* Header plus compact */
    .modern-header {
        padding: 1rem 1.5rem;
    }

    /* Logo plus petit */
    .header-logo {
        font-size: 1.2rem;
    }

    /* Afficher le burger */
    .burger-menu {
        display: flex;
    }

    /* CACHER la nav par défaut sur mobile */
    .header-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: rgba(5, 8, 20, 0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: center;
        align-items: flex-start;
        gap: 1.5rem;
        padding: 2rem;
        border-left: 1px solid rgba(0, 210, 255, 0.3);
        box-shadow: -10px 0 30px rgba(0, 0, 0, 0.5);
        transition: right 0.3s ease;
        visibility: hidden;
        opacity: 0;
    }

    /* Nav ouverte - SEULEMENT quand .active */
    .header-nav.active {
        right: 0;
        visibility: visible;
        opacity: 1;
    }

    /* Liens en mobile */
    .nav-link {
        width: 100%;
        padding: 1rem 1.5rem;
        font-size: 1.1rem;
        border-radius: 10px;
    }

    /* Overlay sombre quand menu ouvert */
    .header-nav.active::before {
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        right: 280px;
        bottom: 0;
        background: rgba(0, 0, 0, 0.7);
        z-index: -1;
    }
}

@media (max-width: 480px) {
    .modern-header {
        padding: 0.8rem 1rem;
    }

    .header-logo {
        font-size: 1.1rem;
    }

    .header-nav {
        width: 260px;
    }
}

/* ================================================
   ANIMATION AU CHARGEMENT
   ================================================ */

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modern-header {
    animation: slideDown 0.5s ease;
}

/* ================================================
   ESPACEMENT DES SECTIONS POUR LE NOUVEAU HEADER
   ================================================ */

body {
    padding-top: 80px;
}

section {
    scroll-margin-top: 80px;
}

@media (max-width: 768px) {
    body {
        padding-top: 70px;
    }
    
    section {
        scroll-margin-top: 70px;
    }
}