/* Premium sidebar style */
.ow_sidebar_glass {
    background: var(--popple-navigation-surface);
    border: 1px solid var(--base-glass-border-color);
    border-radius: var(--base-radius);
    box-shadow: var(--base-shadow), var(--base-card-glow);
    backdrop-filter: blur(var(--base-glass-blur));
    -webkit-backdrop-filter: blur(var(--base-glass-blur));
    padding: 16px;
    margin-bottom: 20px;
}