/* Overrides for user requests: show styled dividers, adjust logout, triangle arrows, submenu animation */
    .sidebar-divider {
        display: block !important;
        height: 0;
        border: none;
        border-top: 1px solid rgba(15, 23, 42, 0.12);
        background: transparent;
        /* keep a bit of right margin so the divider doesn't get visually hidden
           behind overlay scrollbars; promote to its own layer to avoid hairline
           rendering glitches when scrolling */
        margin: 12px -16px;
        width: calc(100% + 32px);
        position: relative;
        z-index: 6;
        opacity: 1;
        border-radius: 1px;
        transform: translateZ(0);
        flex: 0 0 auto;
    }

    .user-logout-full { border: none !important; justify-content: flex-start !important; padding: 10px 12px !important; gap: 10px; text-align: left; }
    .user-logout-full i { margin-right: 8px; }

    /* Calendar icons: keep dark when INACTIVE, inherit color when ACTIVE */
    .nav-item:not(.active) i.fa-calendar-week,
    .nav-item:not(.active) i.fa-calendar { color: #111; }

    /* Replace chevron icon with a small triangle: closed = nose down, open = nose up */
    /* Triangle indicator: closed (collapsed) points down; expanded rotates 180deg to point up.
       Color switches to primary when expanded. */
    .nav-item .arrow {
        font-size: 0 !important;
        width: 0;
        height: 0;
        margin-left: auto;
        border-left: 6px solid transparent;
        border-right: 6px solid transparent;
        border-top: 0;
        border-bottom: 8px solid #111;
        transition: transform 0.22s ease, border-bottom-color 0.2s;
        display: inline-block;
        transform-origin: center;
        transform: rotate(0deg) !important;
    }
    /* Ensure FontAwesome glyph is not visible inside the arrow element */
    .nav-item .arrow::before { content: none !important; }
    /* closed: nose down (was 0deg) — swapped with expanded */
    .nav-item.collapsed .arrow { transform: rotate(180deg) !important; }
    /* open: nose up (was 180deg) — swapped with collapsed */
    .nav-item.expanded .arrow { transform: rotate(0deg) !important; border-bottom-color: var(--primary-blue) !important; }

    /* Smooth collapse/expand using max-height */
    .submenu { max-height: 0; overflow: hidden; transition: max-height 0.28s ease, padding 0.22s ease; padding-left: 0; }
    .submenu.open { max-height: 480px; padding-top: 0; padding-bottom: 10px; }

    /* Combine header and submenu into single light-blue bordered rectangle when expanded */
    .nav-item.expanded { background: var(--light-blue-bg); color: var(--primary-blue); border: 1px solid rgba(28,119,255,0.12); border-radius: 10px 10px 0 0; padding: 10px 12px; }
    .nav-item.expanded > i { color: var(--primary-blue); }
    .nav-item.expanded + .submenu.open { border: 1px solid rgba(28,119,255,0.12); border-top: none; border-radius: 0 0 10px 10px; background: linear-gradient(-90deg, rgba(235,245,255,0.6), rgba(235,245,255,0.4)); padding-left: 0; }

    .nav-item.expanded + .submenu.open .nav-item { background: transparent !important; color: var(--text-dark); border-radius: 0; padding: 8px 12px 8px 40px !important; font-weight: 600; }

    /* Active styles: header + selected item both blue */
    .nav-item.expanded.active, .nav-item.expanded.active > i { color: var(--primary-blue); }
    .nav-item.expanded + .submenu.open .nav-item.active { color: var(--primary-blue); font-weight: 700; }

    .nav-item.expanded:hover { box-shadow: 0 6px 18px rgba(28,119,255,0.06); }

    /* Keep arrows hidden when sidebar is collapsed */
    .sidebar.collapsed .nav-item .arrow { display: none; }