.layout-content {
    display: flex;
    flex-direction: column;
    flex: 1 1 0;
    height: 100vh;
    overflow: hidden;
    transition: margin-left $transitionDuration;
}

.layout-main {
    flex: 1 1 0;
    overflow-y: auto;
    padding: 2rem;
    // existing main content styles...
}
