/* ================================ */
/* -------- Navbar globale -------- */
/* ================================ */
.navbar {
    background: rgba(0, 0, 0, 0);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 0.75px solid rgba(0, 0, 0, 0.05);
    position: fixed;
    top: 0;
    z-index: 999;
    width: 100%;
    padding: 1rem 2rem;
    transition: background 0.5s ease, height 0.5s ease;
}

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

/* Logo */
.navbar-logo img {
    height: 50px;
    transition: transform 0.3s ease;
}
.navbar-logo img:hover {
    transform: scale(1.05);
}
.navbar-logo a {
    font-size: var(--font-size-lg);
    font-weight: bold;
    text-transform: uppercase;
    color: var(--blue-dark);
    text-decoration: none;
}

/* Bouton hamburger */
.navbar-toggle {
    display: block;
    background: none;
    border: none;
    cursor: pointer;
    width: 32px;
    height: 28px;
    position: relative;
    padding: 0;
    z-index: 1001;
    color: var(--white);
    mix-blend-mode: difference;
}
.navbar-toggle .bar {
    display: block;
    position: absolute;
    height: 4px;
    width: 100%;
    background-color: currentColor;
    border-radius: 2px;
    transition: transform 0.4s ease, opacity 0.4s ease, top 0.4s ease, bottom 0.4s ease;
}
.navbar-toggle .top { top: 0; }
.navbar-toggle .middle { top: 50%; transform: translateY(-50%); }
.navbar-toggle .bottom { bottom: 0; }

/* Animation Hamburger → Croix */
.navbar-toggle.active .top {
    top: 50%;
    transform: translateY(-50%) rotate(45deg);
}
.navbar-toggle.active .middle {
    opacity: 0;
    transform: translateX(100px); /* effet disparition */
}
.navbar-toggle.active .bottom {
    bottom: auto;
    top: 50%;
    transform: translateY(-50%) rotate(-45deg);
}

/* Quand la navbar est ouverte */
.navbar.navbar-open {
    min-height: 100%;
    height: fit-content;
    background: linear-gradient(135deg, var(--white), #f8fafc, #e0e7ef, #c7d2fe, #e0e7ef, #f8fafc, var(--white));
    background-size: 400% 400%;
    animation: GradientFlow 8s ease infinite;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    transition: background 0.75s ease, backdrop-filter 0.8s ease;
}

/* =============================== */
/* -------- Navbar Links -------- */
/* =============================== */
.navbar-links {
    display: none;
    flex-direction: column;
    width: 100%;
    margin-top: 1rem;
    opacity: 1;
    list-style: none;
    transform: translateY(0);
    animation: navbarFadeSlide 0.25s ease forwards;
}
.navbar-links.active {
    display: flex;
}

/* Scrollable Menu Navbar */
.navbar-links {
    max-height: calc(100vh - 120px); /* ajuste en fonction de la hauteur du header */
    overflow-y: auto;
    overflow-x: hidden;
    scroll-behavior: smooth;
    padding-right: 0.5rem; /* Pour éviter que la barre de scroll cache du texte */
    -webkit-overflow-scrolling: touch;
}
/* Scrollbar Webkit (Chrome/Safari) - Discret */
.navbar-links::-webkit-scrollbar {
    width: 6px;
}
/* Scrollbar Webkit avec Glow */
.navbar-links::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--cyan-electrical), var(--pink-fuchsia));
    border-radius: 10px;
    box-shadow: 0 0 8px rgba(0, 195, 255, 0.5),
                0 0 12px rgba(255, 0, 212, 0.4);
}
.navbar-links::-webkit-scrollbar-track {
    background: transparent;
}
.navbar-links::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 4px;
}
/* Encore plus visible au hover */
.navbar-links::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, var(--pink-fuchsia), var(--cyan-electrical));
    box-shadow: 0 0 10px rgba(255, 0, 212, 0.6),
                0 0 16px rgba(0, 195, 255, 0.5);
}
.navbar-links::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.3);
}
/* Firefox scrollbar (invisible) */
.navbar-links {
    scrollbar-width: thin;
    scrollbar-color: rgba(0, 0, 0, 0.2) transparent;
}

.navbar-item {
    width: 100%;
    position: relative;
}

.navbar-link {
    width: 100%;
    background: none;
    border: none;
    cursor: pointer;
    font-size: var(--font-size-md);
    font-weight: 500;
    color: var(--sky-dark);
    background-image: linear-gradient(90deg, var(--sky), var(--sky-dark), var(--blue), var(--blue));    
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    padding: 1rem;
    border-radius: var(--radius-sm);
    text-align: left;
    transition: background-color 0.3s;
}

.navbar-link:hover,
.navbar-link:focus {
    background-color: var(--blue-light);
    border: 2.5px auto;
    border-color: var(--blue-dark);
}

/* Dropdowns */
.navbar-dropdown {
    display: none;
    position: static;
    margin-top: 0;
    border: none;
    box-shadow: none;
    background: var(--blue-light);
    backdrop-filter: blur(10px);
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    animation: navbarFadeSlide 0.3s ease forwards;
}

.navbar-dropdown a {
    font-size: var(--font-size-sm);
    font-family: var(--font-secondary);
    color: var(--sky-dark);
    background-image: linear-gradient(90deg, var(--sky), var(--sky-dark), var(--blue), var(--blue));    
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.navbar-item:hover .navbar-dropdown,
.navbar-item:focus-within .navbar-dropdown {
    display: block;
    min-width: min-content;
}

/* Animation Fade */
@keyframes navbarFadeSlide {
    0% { opacity: 0; transform: translateY(-10px); }
    100% { opacity: 1; transform: translateY(0); }
}