body {
    padding-left: 70px;
}

.gsSideNav {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 70px;
    background: var(--gs-fond-noir);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    overflow-y: auto;
    padding: 10px 0;
    transition: width 0.15s ease;
}

.gsSideNav:hover,
.gsSideNav.gsSideNav-open {
    width: 180px;
}

.gsSideNavItem {
    display: flex;
    align-items: center;
    gap: var(--gs-esp-s);
    padding: var(--gs-esp-s);
    color: var(--gs-texte);
    text-decoration: none;
    white-space: nowrap;
    border: none;
    background: none;
    font: inherit;
    cursor: pointer;
    width: 100%;
    text-align: left;
}

.gsSideNavMain {
    display: flex;
    flex-direction: column;
    margin: auto 0;
}

/* Pousse "Se déconnecter" (dernier item) tout en bas du menu, quel que
 * soit l'agencement de gsSideNavMain (colonne en desktop, grille en mobile). */
.gsSideNav > .gsSideNavItem:last-child {
    margin-top: auto;
}

.gsSideNavAccount {
    flex-direction: column;
    text-align: center;
    gap: 4px;
    min-width: 0;
}

.gsSideNavAccount .gsSideNavLabel {
    width: 100%;
    white-space: normal;
    min-width: 0;
    overflow-wrap: break-word;
}

.gsSideNavAvatar {
    flex: 0 0 auto;
    width: 50px;
    height: 50px;
    border-radius: var(--gs-radius-rond);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gs-fond-sombre);
    border: none;
    padding: 0;
    font: inherit;
    color: inherit;
    cursor: pointer;
    transition: width 0.15s ease, height 0.15s ease;
}

.gsSideNavAvatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.gsSideNav:hover .gsSideNavAvatar,
.gsSideNav.gsSideNav-open .gsSideNavAvatar {
    width: 100px;
    height: 100px;
}

.gsSideNavItem:hover {
    background: var(--gs-violet-voile);
}

.gsSideNavItem-active,
.gsSideNavItem-active:hover {
    background: var(--gs-violet);
    font-weight: bold;
}

.gsSideNavIcon {
    flex: 0 0 auto;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Sprite à 5 lignes et 2 colonnes : à gauche la variante blanche, pour le fond
 * noir du menu ; à droite la noire, pour les tuiles blanches du mode mobile.
 * background-size ramène l'image entière à 100 x 250, soit 5 cases de 50px de
 * haut — à corriger si une ligne est ajoutée au sprite. */
.gsSideNavIcon-forum,
.gsSideNavIcon-backing,
.gsSideNavIcon-ecouter,
.gsSideNavIcon-editer {
    background-image: url('../img/menu-sprite.png');
    background-repeat: no-repeat;
    background-size: 100px 250px;
}

.gsSideNavIcon-forum {
    background-position: 0 0;
}

.gsSideNavIcon-backing {
    background-position: 0 -50px;
}

/* La 3e ligne du sprite n'est pas encore utilisée. */

.gsSideNavIcon-ecouter {
    background-position: 0 -150px;
}

.gsSideNavIcon-editer {
    background-position: 0 -200px;
}

.gsSideNavLabel {
    opacity: 0;
    transition: opacity 0.1s ease;
}

.gsSideNav:hover .gsSideNavLabel,
.gsSideNav.gsSideNav-open .gsSideNavLabel {
    opacity: 1;
}

.gsBurgerBtn {
    position: fixed;
    top: 35px;
    left: 1rem;
    z-index: 2100;
    background-color: #fff;
    border: none;
    padding: 0.75rem;
    border-radius: 8px;
    cursor: pointer;
    display: none;
    flex-direction: column;
    gap: 5px;
    transition: all 0.3s ease;
}

.gsBurgerBtn span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: #333;
    border-radius: 2px;
    transition: all 0.3s ease;
}

.gsBurgerBtn.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

.gsBurgerBtn.active span:nth-child(2) {
    opacity: 0;
}

.gsBurgerBtn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

.gsMenuOverlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1900;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.gsMenuOverlay.active {
    opacity: 1;
    visibility: visible;
}

@media (max-width: 768px) {
    body {
        padding-left: 0;
    }

    .gsBurgerBtn {
        display: flex;
    }

    .gsSideNav {
        width: 280px;
        background: url(../img/fondforum.png);
        padding: 5rem 1rem 1rem;
        justify-content: normal;
        transform: translateX(-100%);
        visibility: hidden;
        transition: transform 0.3s ease, visibility 0s linear 0.3s;
    }

    .gsSideNav.active {
        transform: translateX(0);
        visibility: visible;
        transition: transform 0.3s ease;
    }

    .gsSideNav:hover,
    .gsSideNav.gsSideNav-open,
    .gsSideNav.active {
        width: 280px;
    }

    .gsSideNavLabel {
        opacity: 1;
    }

    .gsSideNavAvatar,
    .gsSideNav:hover .gsSideNavAvatar,
    .gsSideNav.gsSideNav-open .gsSideNavAvatar {
        width: 100px;
        height: 100px;
    }

    .gsSideNavMain {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
        margin: 20px 0;
        width: 100%;
    }

    .gsSideNavMain .gsSideNavItem {
        flex-direction: column;
        justify-content: center;
        width: auto;
        padding: 10px;
        border-radius: 10px;
        background-color: #fff;
        color: #000;
    }

    .gsSideNavMain .gsSideNavItem:hover {
        background-color: rgba(145, 55, 209, 0.35);
        color: #fff;
    }

    .gsSideNavMain .gsSideNavItem-active,
    .gsSideNavMain .gsSideNavItem-active:hover {
        background-color: var(--gs-violet);
        color: #fff;
        font-weight: bold;
    }

    /* Colonne de droite du sprite : l'icône noire, lisible sur la tuile blanche. */
    .gsSideNavMain .gsSideNavIcon-forum {
        background-position: -50px 0;
    }

    .gsSideNavMain .gsSideNavIcon-backing {
        background-position: -50px -50px;
    }

    .gsSideNavMain .gsSideNavIcon-ecouter {
        background-position: -50px -150px;
    }

    .gsSideNavMain .gsSideNavIcon-editer {
        background-position: -50px -200px;
    }

    .gsSideNavMain .gsSideNavLabel {
        position: absolute;
        width: 1px;
        height: 1px;
        padding: 0;
        margin: -1px;
        overflow: hidden;
        clip: rect(0, 0, 0, 0);
        white-space: nowrap;
        border: 0;
        opacity: 1;
    }
}