.admin-sidebar {
    width: 280px;
    min-height: 100vh;
    position: fixed;
    left: 0;
    top: 0;
    background: #343a40;
    color: #c2c7d0;
    z-index: 1040;
    overflow-y: auto;
    box-shadow: 0 0 18px rgba(0,0,0,.25);
}

.brand-link {
    height: 64px;
    display: flex;
    align-items: center;
    gap: .75rem;
    padding: .85rem 1rem;
    color: #fff;
    text-decoration: none;
    border-bottom: 1px solid rgba(255,255,255,.08);
}

.brand-link:hover {
    color: #fff;
}

.brand-logo {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    background: #007bff;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 800;
}

.brand-text {
    font-weight: 700;
    font-size: 1rem;
    line-height: 1.1;
}

.brand-subtitle {
    font-size: .75rem;
    color: #adb5bd;
}

.sidebar-user {
    padding: 1rem;
    border-bottom: 1px solid rgba(255,255,255,.08);
}

.sidebar-user-box {
    display: flex;
    align-items: center;
    gap: .75rem;
}

.sidebar-avatar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: #495057;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
}

.sidebar-section {
    padding: 1rem 1rem .35rem;
    font-size: .72rem;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: #8f969e;
}

.sidebar-nav {
    padding: .5rem .75rem 1.5rem;
}

.sidebar-nav .nav-link {
    color: #c2c7d0;
    border-radius: .35rem;
    padding: .7rem .85rem;
    display: flex;
    align-items: center;
    gap: .75rem;
    margin-bottom: .15rem;
}

.sidebar-nav .nav-link:hover {
    color: #fff;
    background: rgba(255,255,255,.08);
}

.sidebar-nav .nav-link.active {
    color: #fff;
    background: #007bff;
}

.sidebar-nav .nav-icon {
    width: 20px;
    text-align: center;
}

.sidebar-backdrop {
    display: none;
}

@media (max-width: 991.98px) {
    .admin-sidebar {
        transform: translateX(-100%);
        transition: transform .2s ease;
    }

    .admin-sidebar.show {
        transform: translateX(0);
    }

    .sidebar-backdrop.show {
        display: block;
        position: fixed;
        inset: 0;
        background: rgba(0,0,0,.45);
        z-index: 1035;
    }
}