* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-color: #ffffff;
    --text-color: #1a1a1a;
    --accent-color: #ff3e3e;
    --nav-height: 80px;
    --transition-smooth: all 0.35s cubic-bezier(0.25, 1, 0.5, 1);
}

body {
    font-family: 'Segoe UI', system-ui, sans-serif;
    background-color: #fcfcfc;
    color: var(--text-color);
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--nav-height);
    background-color: var(--bg-color);
    box-shadow: 0 1px 0px rgba(0, 0, 0, 0.04);
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 30px;
}

.logo {
    font-size: 24px;
    font-weight: 700;
    text-decoration: none;
    color: var(--text-color);
    letter-spacing: 2px;
}

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

/* Liens Principaux */
.nav-links {
    display: flex;
    list-style: none;
    gap: 35px;
}

.nav-links > li {
    position: relative;
}

.nav-links a {
    color: black;
    text-decoration: none;
    /*color: var(--text-color);*/
    color: black;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 1px;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 0;
    opacity: 0.7;
    transition: var(--transition-smooth);
}

.nav-links > li > a:hover, 
.nav-links > li > a.active {
    opacity: 1;
}

/* Animation du Chevron */
.chevron {
    transition: transform 0.3s ease;
}

/* --- STRUCTURE DU DROPDOWN (DESKTOP) --- */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(15px);
    background-color: var(--bg-color);
    min-width: 200px;
    list-style: none;
    padding: 15px 0;
    box-shadow: 0 10px 30px rgba(0,0,0,0.06);
    border-radius: 4px;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: var(--transition-smooth);
}

.dropdown-menu a {
    color:black;
    padding: 10px 25px;
    font-size: 13px;
    text-transform: none;
    letter-spacing: 0.5px;
    opacity: 0.6;
}

.dropdown-menu a:hover {
    opacity: 1;
    background-color: #f9f9f9;
}

/* Comportement au Survol sur Desktop */
@media screen and (min-width: 769px) {
    .dropdown:hover .dropdown-menu {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        transform: translateX(-50%) translateY(0);
    }
    .dropdown:hover .chevron {
        transform: rotate(180deg);
    }
}

/* Bouton Burger */
.burger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 6px;
    z-index: 1001;
}

.burger .bar {
    width: 24px;
    height: 2px;
    background-color: var(--text-color);
    transition: var(--transition-smooth);
}

/* --- 📱 RESPONSIVE (MOBILE & TABLETTE) --- */
@media screen and (max-width: 768px) {
    .burger { display: flex; }

    .nav-links {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        width: 100%;
        height: calc(100vh - var(--nav-height));
        background-color: var(--bg-color);
        flex-direction: column;
        justify-content: flex-start;
        padding: 40px 30px;
        gap: 20px;
        overflow-y: auto;
        transform: translateY(-20px);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition-smooth);
    }

    .nav-links.active {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    .nav-links a {
        font-size: 18px;
        width: 100%;
        justify-content: space-between;
    }

    /* Reset pour le mode Mobile */
    .dropdown-menu {
        position: static;
        transform: none !important;
        box-shadow: none;
        padding: 0 0 0 15px;
        max-height: 0;
        overflow: hidden;
        visibility: visible;
        opacity: 1;
        transition: max-height 0.4s cubic-bezier(0.25, 1, 0.5, 1);
    }

    .dropdown-menu a {
        font-size: 15px;
        padding: 8px 0;
    }

    /* Classe dynamique injectée par le JS sur Mobile */
    .dropdown.open .dropdown-menu {
        max-height: 300px; /* Valeur arbitraire haute pour l'animation */
    }

    .dropdown.open .chevron {
        transform: rotate(180deg);
    }

    /* Croix du Burger */
    .burger.active .bar:nth-child(1) { transform: translateY(8px) rotate(45deg); }
    .burger.active .bar:nth-child(2) { opacity: 0; }
    .burger.active .bar:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
}