/* ==========================================================================
   Bibliothèque scientifique ACSG — styles propres au module catalogue
   S'appuie sur les couleurs et polices du site (Roboto/Montserrat, bleu
   #003366/#1e3a8a, doré #f39c12) sans modifier les fichiers CSS d'origine.
   ========================================================================== */

:root {
    --acsg-blue: #003366;
    --acsg-blue-light: #1e3a8a;
    --acsg-gold: #f39c12;
    --acsg-border: #e7ebf1;

    --ease: cubic-bezier(.22, .68, 0, 1);
    --transition-fast: .2s var(--ease);
    --transition: .35s var(--ease);

    --shadow-sm: 0 4px 14px rgba(0, 51, 102, 0.08);
    --shadow-md: 0 14px 34px rgba(0, 51, 102, 0.14);
    --shadow-lg: 0 24px 60px rgba(0, 51, 102, 0.20);
}

/* ==========================================================================
   Animations de base
   ========================================================================== */

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(22px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}

@keyframes floatBlob {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50%      { transform: translate(20px, -16px) scale(1.08); }
}

@keyframes pulseSoft {
    0%, 100% { box-shadow: 0 0 0 0 rgba(28, 138, 77, .35); }
    50%      { box-shadow: 0 0 0 6px rgba(28, 138, 77, 0); }
}

@keyframes shimmer {
    0%   { background-position: -300px 0; }
    100% { background-position: 300px 0; }
}

/* Apparition au scroll — masqué uniquement si JS actif (voir bibliotheque.js) */
.js .reveal {
    opacity: 0;
    transform: translateY(26px);
    transition: opacity .7s var(--ease), transform .7s var(--ease);
    transition-delay: calc(var(--i, 0) * 70ms);
}

.js .reveal.in-view {
    opacity: 1;
    transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
    .js .reveal { opacity: 1; transform: none; transition: none; }
    * { animation-duration: .001ms !important; animation-iteration-count: 1 !important; }
}

/* ==========================================================================
   Bannière
   ========================================================================== */

.biblio-banner {
    position: relative;
    background: linear-gradient(135deg, var(--acsg-blue) 0%, var(--acsg-blue-light) 100%);
    color: #fff;
    padding: 80px 0 56px;
    overflow: hidden;
    isolation: isolate;
}

.biblio-banner::before,
.biblio-banner::after {
    content: "";
    position: absolute;
    border-radius: 50%;
    filter: blur(4px);
    opacity: .35;
    z-index: -1;
    animation: floatBlob 9s ease-in-out infinite;
}

.biblio-banner::before {
    width: 320px;
    height: 320px;
    background: radial-gradient(circle at 30% 30%, var(--acsg-gold), transparent 70%);
    top: -140px;
    right: -60px;
}

.biblio-banner::after {
    width: 260px;
    height: 260px;
    background: radial-gradient(circle at 30% 30%, #fff, transparent 70%);
    bottom: -160px;
    left: -60px;
    animation-delay: -4s;
    opacity: .12;
}

.biblio-banner .container { position: relative; z-index: 1; }

.biblio-banner h1 {
    color: #fff;
    font-weight: 700;
    margin-bottom: 10px;
    animation: fadeUp .7s var(--ease) both;
}

.biblio-banner p {
    color: #e6ecf5;
    max-width: 700px;
    margin: 0 auto;
    animation: fadeUp .7s var(--ease) .1s both;
}

.pub-detail-header {
    position: relative;
    background: #f6f8fb;
    padding: 40px 0;
    border-bottom: 1px solid var(--acsg-border);
    overflow: hidden;
}

/* ---- Barre de recherche ---- */
.biblio-search {
    margin-top: -30px;
    position: relative;
    z-index: 5;
    animation: fadeUp .7s var(--ease) .18s both;
}

.biblio-search-box {
    background: #fff;
    border-radius: 10px;
    box-shadow: var(--shadow-lg);
    padding: 18px;
    transition: box-shadow var(--transition);
}

.biblio-search-box:focus-within {
    box-shadow: 0 24px 60px rgba(0, 51, 102, 0.28);
}

.biblio-search-box .form-control {
    height: 48px;
    border-radius: 6px;
    border: 1px solid var(--acsg-border);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.biblio-search-box .form-control:focus {
    border-color: var(--acsg-blue-light);
    box-shadow: 0 0 0 3px rgba(30, 58, 138, .12);
}

.biblio-search-box .btn-search {
    height: 48px;
    background: var(--acsg-gold);
    border: none;
    color: #fff;
    font-weight: 600;
    border-radius: 6px;
    padding: 0 28px;
    position: relative;
    overflow: hidden;
    transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.biblio-search-box .btn-search:hover {
    background: #d98505;
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 8px 18px rgba(243, 156, 18, .35);
}

.biblio-search-box .btn-search:active { transform: translateY(0); }

/* ==========================================================================
   Boutons — effet de balayage lumineux au survol
   ========================================================================== */

.main-btn,
.btn-consult,
.btn-acsg,
.acsg-btn {
    position: relative;
    overflow: hidden;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}

.main-btn::after,
.btn-consult::after,
.btn-acsg::after,
.acsg-btn::after {
    content: "";
    position: absolute;
    top: 0; left: -60%;
    width: 40%; height: 100%;
    background: linear-gradient(120deg, transparent, rgba(255, 255, 255, .35), transparent);
    transform: skewX(-20deg);
    transition: left .6s var(--ease);
    pointer-events: none;
}

.main-btn:hover::after,
.btn-consult:hover::after,
.btn-acsg:hover::after,
.acsg-btn:hover::after { left: 130%; }

.main-btn:hover,
.btn-consult:hover,
.btn-acsg:hover,
.acsg-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ---- Layout catalogue ---- */
.biblio-content { padding: 40px 0 80px; }

.biblio-results-count { color: #505050; margin-bottom: 20px; }
.biblio-results-count strong { color: var(--acsg-blue); }

/* ---- Filtres ---- */
.biblio-filters {
    background: #fff;
    border: 1px solid var(--acsg-border);
    border-radius: 10px;
    padding: 22px;
    transition: box-shadow var(--transition);
}

.biblio-filters:hover { box-shadow: var(--shadow-sm); }

.biblio-filters h5 {
    color: var(--acsg-blue);
    font-weight: 700;
    margin-bottom: 18px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--acsg-gold);
}

.biblio-filters .form-group { margin-bottom: 16px; }

.biblio-filters label {
    font-size: 13px;
    font-weight: 600;
    color: #333;
    text-transform: uppercase;
    letter-spacing: .5px;
}

.biblio-filters select,
.biblio-filters .form-control {
    border-radius: 6px;
    border: 1px solid var(--acsg-border);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.biblio-filters select:focus,
.biblio-filters .form-control:focus {
    border-color: var(--acsg-blue-light);
    box-shadow: 0 0 0 3px rgba(30, 58, 138, .12);
}

.biblio-filters .btn-reset {
    color: var(--acsg-blue-light);
    font-size: 13px;
    text-decoration: underline;
    transition: color var(--transition-fast);
}

.biblio-filters .btn-reset:hover { color: var(--acsg-gold); }

.biblio-filters-toggle {
    display: none;
}

/* ---- Cartes publication ---- */
.pub-card {
    background: #fff;
    border: 1px solid var(--acsg-border);
    border-radius: 12px;
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
    transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}

.pub-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-6px);
    border-color: transparent;
}

.pub-card-cover {
    height: 190px;
    background: #eef1f6 center/cover no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--acsg-blue-light);
    font-size: 40px;
    overflow: hidden;
    position: relative;
}

.pub-card-cover::before {
    content: "";
    position: absolute;
    inset: 0;
    background: inherit;
    background-size: cover;
    background-position: center;
    transition: transform .5s var(--ease);
}

.pub-card:hover .pub-card-cover::before { transform: scale(1.08); }

.pub-card-body {
    padding: 18px 20px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.pub-card-type {
    color: var(--acsg-gold);
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .5px;
    margin-bottom: 6px;
}

.pub-card-title {
    font-size: 17px;
    font-weight: 700;
    color: var(--acsg-blue);
    margin-bottom: 8px;
    line-height: 1.35;
}

.pub-card-title a {
    color: inherit;
    background-image: linear-gradient(var(--acsg-gold), var(--acsg-gold));
    background-repeat: no-repeat;
    background-position: 0 100%;
    background-size: 0% 2px;
    transition: background-size var(--transition), color var(--transition-fast);
}

.pub-card-title a:hover {
    color: var(--acsg-blue-light);
    background-size: 100% 2px;
    text-decoration: none;
}

.pub-card-meta { font-size: 13px; color: #6a6a6a; margin-bottom: 10px; }
.pub-card-summary { font-size: 14px; color: #505050; margin-bottom: 14px; flex-grow: 1; }

.pub-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
}

.pub-card-footer .main-btn {
    padding: 8px 16px;
    font-size: 13px;
}

/* ---- Badges de statut d'accès ---- */
.badge-access {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .4px;
    padding: 4px 10px;
    border-radius: 20px;
}

.badge-access::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
}

.badge-access.available { background: #e5f6ec; color: #1c8a4d; animation: pulseSoft 2.4s ease-in-out infinite; border-radius: 20px; }
.badge-access.reference_only { background: #fdf1dd; color: #ad6e08; }
.badge-access.unavailable { background: #f7e6e6; color: #b23c3c; }

/* ---- Fiche détail ---- */
.pub-detail-cover {
    width: 100%;
    border-radius: 10px;
    border: 1px solid var(--acsg-border);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition);
}

.pub-detail-cover:hover { transform: translateY(-4px); }

.pub-detail-cover-placeholder {
    aspect-ratio: 3 / 4;
    background: linear-gradient(135deg, #eef1f6, #f6f8fb);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--acsg-blue-light);
    font-size: 56px;
}

.author-avatar {
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition);
}

.author-avatar:hover { transform: scale(1.05); }

.author-avatar-placeholder {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    margin-right: 20px;
    background: linear-gradient(135deg, var(--acsg-blue), var(--acsg-blue-light));
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    box-shadow: var(--shadow-sm);
    flex-shrink: 0;
}

.pub-detail-title { color: var(--acsg-blue); font-weight: 700; }
.pub-detail-authors a { color: var(--acsg-blue-light); font-weight: 600; transition: color var(--transition-fast); }
.pub-detail-authors a:hover { color: var(--acsg-gold); }

.pub-access-box {
    border: 1px solid var(--acsg-border);
    border-radius: 10px;
    padding: 20px;
    background: #fff;
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition);
}

.pub-access-box:hover { box-shadow: var(--shadow-md); }

.pub-access-box .btn-consult {
    background: var(--acsg-blue);
    border-color: var(--acsg-blue);
    color: #fff;
    width: 100%;
    font-weight: 600;
    padding: 12px;
}

.pub-access-box .btn-consult:hover { background: var(--acsg-blue-light); color: #fff; }

.biblio-table th {
    width: 40%;
    color: var(--acsg-blue);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: .4px;
}

.biblio-table tr { transition: background-color var(--transition-fast); }
.biblio-table tr:hover { background-color: #f6f8fb; }

.biblio-keyword {
    display: inline-block;
    background: #eef1f6;
    color: var(--acsg-blue-light);
    font-size: 12px;
    padding: 4px 12px;
    border-radius: 20px;
    margin: 0 6px 6px 0;
    transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.biblio-keyword:hover {
    background: var(--acsg-blue-light);
    color: #fff;
    transform: translateY(-2px);
}

/* ---- Lien "Bibliothèque scientifique" mis en avant dans le menu
   (même règle que css/style.css sur le site principal, pour un rendu
   identique de part et d'autre) ---- */
.navigation .navbar .navbar-nav li a[href*="/bibliotheque"] {
    background-color: var(--acsg-gold);
    color: #ffffff !important;
    padding: 6px 14px !important;
    border-radius: 18px;
    margin-left: 4px;
    display: inline-flex;
    align-items: center;
    font-size: 12px;
    font-weight: 600;
    line-height: 1.3;
}

.navigation .navbar .navbar-nav li a[href*="/bibliotheque"]::before {
    font-family: 'FontAwesome';
    content: "\f02d";
    margin-right: 5px;
    font-size: 11px;
}

.navigation .navbar .navbar-nav li a[href*="/bibliotheque"]:hover,
.navigation .navbar .navbar-nav li a[href*="/bibliotheque"].active {
    background-color: var(--acsg-blue);
    color: #ffffff !important;
    transform: translateY(-2px);
    box-shadow: 0 8px 18px rgba(0, 0, 0, .22);
}

@media (max-width: 991px) {
    .navigation .navbar .navbar-nav li a[href*="/bibliotheque"] {
        display: inline-flex;
        margin: 6px 0;
    }
}

.navigation .navbar .navbar-nav {
    align-items: center;
}

.navigation .member-access {
    display: flex !important;
    align-items: center !important;
    justify-content: flex-end !important;
    height: auto !important;
    min-height: 0 !important;
    position: static !important;
    top: auto !important;
    margin: 0 !important;
}

.navigation .member-access .acsg-btn {
    display: inline-flex !important;
    align-items: center !important;
    padding: 6px 14px !important;
    border-radius: 18px !important;
    font-size: 12px !important;
    font-weight: 600 !important;
    line-height: 1.3 !important;
    white-space: nowrap !important;
    margin: 0 !important;
    vertical-align: middle !important;
    position: static !important;
    top: auto !important;
    transform: none !important;
}

/* ---- Navigation : soulignement animé ---- */
.nav-underline {
    position: relative;
}

.nav-underline::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -4px;
    width: 0%;
    height: 2px;
    background: var(--acsg-gold);
    transition: width var(--transition-fast);
}

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

/* ---- Header qui se compacte au scroll ---- */
#header-part .header-top {
    max-height: 44px;
    overflow: hidden;
    opacity: 1;
    transition: max-height var(--transition), opacity var(--transition), padding var(--transition);
}

#header-part.is-shrunk .header-top {
    max-height: 0;
    opacity: 0;
    padding-top: 0;
    padding-bottom: 0;
}

#header-part.is-shrunk .header-logo-support {
    padding-top: 14px;
    padding-bottom: 14px;
}

#header-part.is-shrunk .header-logo-support img {
    max-height: 42px;
    transition: max-height var(--transition);
}

#header-part {
    position: sticky;
    top: 0;
    z-index: 999;
    background: #fff;
    transition: box-shadow var(--transition);
}

#header-part.is-shrunk {
    box-shadow: 0 6px 20px rgba(0, 51, 102, 0.12);
}

/* ---- Barre de statistiques (bannière catalogue) ---- */
.biblio-stats-strip {
    display: flex;
    justify-content: center;
    gap: 50px;
    margin-top: 28px;
    flex-wrap: wrap;
}

.biblio-stat {
    text-align: center;
}

.biblio-stat-value {
    display: block;
    font-size: 30px;
    font-weight: 700;
    color: var(--acsg-gold);
    line-height: 1.2;
}

.biblio-stat-label {
    display: block;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: .6px;
    color: #cddaee;
    margin-top: 2px;
}

/* ---- Recherche : spinner de chargement ---- */
.btn-search-spinner {
    display: none;
    width: 14px;
    height: 14px;
    border: 2px solid rgba(255, 255, 255, .5);
    border-top-color: #fff;
    border-radius: 50%;
    margin-left: 8px;
    vertical-align: -2px;
    animation: spin .6s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ---- Résultats du catalogue : transition de filtrage instantané ---- */
#catalogue-results {
    transition: opacity .15s ease;
}

#catalogue-results.is-loading {
    pointer-events: none;
}

/* ---- Icônes par type de publication ---- */
.pub-type-icon {
    color: var(--acsg-gold);
}

/* ---- Copier la référence bibliographique ---- */
.btn-copy-ref {
    background: none;
    border: 1px solid var(--acsg-border);
    color: var(--acsg-blue-light);
    font-size: 13px;
    padding: 6px 14px;
    border-radius: 20px;
    margin-top: -8px;
    margin-bottom: 16px;
    transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.btn-copy-ref:hover {
    background: var(--acsg-blue-light);
    color: #fff;
    border-color: var(--acsg-blue-light);
}

.btn-copy-ref.is-copied {
    background: #1c8a4d;
    border-color: #1c8a4d;
    color: #fff;
}

/* ---- Export de citation ---- */
.biblio-citation-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.btn-citation {
    background: #eef1f6;
    border: 1px solid var(--acsg-border);
    color: var(--acsg-blue);
    font-size: 13px;
    font-weight: 600;
    padding: 8px 16px;
    border-radius: 20px;
    transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.btn-citation:hover {
    background: var(--acsg-blue);
    color: #fff;
    transform: translateY(-2px);
}

.btn-citation.is-copied {
    background: #1c8a4d;
    color: #fff;
}

/* ---- Publications similaires ---- */
.biblio-related {
    padding: 40px 0 10px;
    border-top: 1px solid var(--acsg-border);
    margin-top: 30px;
}

.biblio-related h2 {
    color: var(--acsg-blue);
    font-weight: 700;
    margin-bottom: 24px;
}

/* ---- Responsive ---- */
@media (max-width: 991px) {
    .biblio-filters {
        max-height: 0;
        opacity: 0;
        padding-top: 0;
        padding-bottom: 0;
        margin-bottom: 0;
        overflow: hidden;
        border-width: 0;
        transition: max-height var(--transition), opacity var(--transition), padding var(--transition), margin var(--transition), border-width var(--transition);
    }

    .biblio-filters.is-open {
        max-height: 900px;
        opacity: 1;
        padding: 22px;
        margin-bottom: 20px;
        border-width: 1px;
    }

    .biblio-filters-toggle {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: var(--acsg-blue);
        color: #fff;
        border: none;
        border-radius: 6px;
        padding: 10px 18px;
        font-weight: 600;
        margin-bottom: 20px;
        transition: background var(--transition-fast), transform var(--transition-fast);
    }

    .biblio-filters-toggle:hover { background: var(--acsg-blue-light); }
    .biblio-filters-toggle.is-active { background: var(--acsg-blue-light); }
    .biblio-filters-toggle i { transition: transform var(--transition-fast); }
    .biblio-filters-toggle.is-active i { transform: rotate(180deg); }
}

@media (max-width: 575px) {
    .biblio-banner { padding: 56px 0 44px; }
    .pub-card-cover { height: 150px; }
}

/* ---- Menu mobile : les liens apparaissent en cascade a l'ouverture ---- */
@media (max-width: 991px) {
    @keyframes acsgNavItemIn {
        from { opacity: 0; transform: translateX(-10px); }
        to   { opacity: 1; transform: translateX(0); }
    }

    .navigation .navbar-collapse .navbar-nav > .nav-item {
        opacity: 0;
    }

    .navigation .navbar-collapse.show .navbar-nav > .nav-item {
        animation: acsgNavItemIn .35s ease both;
    }

    .navigation .navbar-collapse.show .navbar-nav > .nav-item:nth-child(1)  { animation-delay: .03s; }
    .navigation .navbar-collapse.show .navbar-nav > .nav-item:nth-child(2)  { animation-delay: .07s; }
    .navigation .navbar-collapse.show .navbar-nav > .nav-item:nth-child(3)  { animation-delay: .11s; }
    .navigation .navbar-collapse.show .navbar-nav > .nav-item:nth-child(4)  { animation-delay: .15s; }
    .navigation .navbar-collapse.show .navbar-nav > .nav-item:nth-child(5)  { animation-delay: .19s; }
    .navigation .navbar-collapse.show .navbar-nav > .nav-item:nth-child(6)  { animation-delay: .23s; }
    .navigation .navbar-collapse.show .navbar-nav > .nav-item:nth-child(7)  { animation-delay: .27s; }
    .navigation .navbar-collapse.show .navbar-nav > .nav-item:nth-child(8)  { animation-delay: .31s; }
    .navigation .navbar-collapse.show .navbar-nav > .nav-item:nth-child(9)  { animation-delay: .35s; }
}

/* ==========================================================================
   Menu mobile en tiroir latéral (s'appuie sur le collapse Bootstrap
   existant — voir js/bibliotheque.js pour le fond assombri et la
   fermeture au clic)
   ========================================================================== */
@media (max-width: 991px) {
    .navigation .navbar-collapse {
        position: fixed !important;
        top: 0;
        right: 0;
        bottom: 0;
        margin: 0 !important;
        height: 100vh !important;
        width: 300px;
        max-width: 85vw;
        background: linear-gradient(180deg, #003366, #071f38);
        z-index: 1050;
        display: block !important;
        overflow-y: auto;
        padding: 90px 26px 40px;
        box-shadow: -14px 0 40px rgba(0, 0, 0, .3);
        transform: translateX(100%);
        transition: transform .35s cubic-bezier(.22, .68, 0, 1);
    }

    .navigation .navbar-collapse.show,
    .navigation .navbar-collapse.collapsing {
        transform: translateX(0);
    }

    .navigation .navbar-collapse .navbar-nav {
        align-items: flex-start !important;
        flex-direction: column !important;
    }

    .navigation .navbar-collapse .navbar-nav .nav-item {
        width: 100%;
        margin-right: 0 !important;
    }

    .navigation .navbar .navbar-collapse .navbar-nav li a {
        color: #fff !important;
        padding: 13px 0 !important;
        border-bottom: 1px solid rgba(255, 255, 255, .1);
        width: 100%;
    }

    .navigation .navbar .navbar-collapse .navbar-nav li a[href*="/bibliotheque"] {
        margin-left: 0 !important;
        margin-top: 10px;
        justify-content: center;
    }

    .navigation .navbar-collapse .sub-menu {
        position: static !important;
        background: rgba(0, 0, 0, .18) !important;
        box-shadow: none !important;
        margin: 2px 0 10px !important;
        border-radius: 6px;
        padding: 4px 0 !important;
    }

    .navigation .navbar .navbar-collapse .sub-menu li a {
        color: #cddaee !important;
        padding: 9px 16px !important;
        border-bottom: none;
        text-transform: none;
        font-weight: 500;
    }

    .mobile-nav-backdrop {
        position: fixed;
        inset: 0;
        background: rgba(0, 8, 20, .55);
        z-index: 1040;
        opacity: 0;
        visibility: hidden;
        transition: opacity .3s ease, visibility .3s ease;
    }

    .mobile-nav-backdrop.is-visible {
        opacity: 1;
        visibility: visible;
    }

    body.mobile-nav-open {
        overflow: hidden;
    }
}