/* ============================================
   RESPONSIVE  —  loaded LAST so these rules win
   the cascade over app.css / chapters-sidebar.css
   ============================================ */

/* Single reading column: sidebars become off-canvas drawers */
@media (max-width: 900px) {
    #chapters-sidebar,
    #sidebar {
        position: fixed;
        top: 0;
        bottom: 0;
        height: 100%;
        height: 100dvh;
        z-index: 250;
        overflow-y: auto;
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    #chapters-sidebar {
        left: 0;
        width: min(86vw, 320px);
        transform: translateX(-100%);
        border-width: 0 1px 0 0;
    }

    #sidebar {
        right: 0;
        width: min(86vw, 320px);
        transform: translateX(100%);
        border-width: 0 0 0 1px;
    }

    /* Desktop collapse behaviour does not apply on mobile - drawers use .drawer-open */
    #chapters-sidebar.collapsed,
    #sidebar.collapsed {
        width: min(86vw, 320px);
    }

    #chapters-sidebar.collapsed .chapters-content,
    #sidebar.collapsed .sidebar-content {
        opacity: 1;
        pointer-events: auto;
    }

    .sidebar-content,
    .chapters-content {
        min-width: 0;
        padding-top: 70px;
    }

    #chapters-sidebar.drawer-open,
    #sidebar.drawer-open {
        transform: translateX(0);
    }

    #reader-container {
        width: 100%;
    }

    .reading-progress-label {
        font-size: 10.5px;
    }
}

/* On wider screens the scrim is never needed */
@media (min-width: 901px) {
    .drawer-scrim {
        display: none !important;
    }
}