/* Desktop layout (>=992px): fixed sidebar on the left, content offset to the right. */
.app-sidebar {
    background-color: #f8f9fa;
    padding: 1.25rem 1.25rem;
    display: flex;
    flex-direction: column;
}

.app-content {
    padding: 1.5rem 1rem;
}

@media (min-width: 992px) {
    .app-sidebar {
        position: fixed;
        top: 0;
        left: 0;
        bottom: 0;
        width: 22rem;
        overflow-y: auto;
        border-right: 1px solid #e9ecef;
    }

    .app-content {
        margin-left: 23rem;
        margin-right: 1.5rem;
    }
}

/* Mobile / tablet (<992px): sidebar stacks above content. */
@media (max-width: 991.98px) {
    .app-sidebar {
        width: 100%;
        border-bottom: 1px solid #e9ecef;
        padding: 1rem 1rem 1.25rem;
    }

    .app-content {
        margin-left: 0;
        margin-right: 0;
        padding: 1rem 0.75rem 1.5rem;
    }

    /* Plotly graphs need a sane min-height when the container narrows. */
    .app-content .js-plotly-plot,
    .app-content .plot-container {
        width: 100% !important;
    }

    /* The cause-button row should still wrap nicely on narrow screens. */
    .app-sidebar .btn-sm {
        font-size: 0.8rem;
    }
}