#sidebar {
    width: 240px;
    background: #202123;
    color: #fff;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    padding: 20px;
    font-size: 18px;
    border-bottom: 1px solid #333;
}

.sidebar-menu {
    flex: 1;
}

.sidebar-item {
    padding: 14px 20px;
    cursor: pointer;
    user-select: none;
}

.sidebar-item:hover {
    background: rgba(255,255,255,0.1);
}

.sidebar-item.active {
    background: #10a37f;
}