/* 侧栏「新建报告」下拉 */
.nav-item.has-submenu {
    position: relative;
}

.nav-link.has-submenu {
    cursor: pointer;
}

.nav-link.has-submenu::after {
    content: '\f107';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    margin-left: auto;
    transition: transform 0.3s;
}

.nav-link.has-submenu.expanded::after {
    transform: rotate(180deg);
}

.submenu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    background-color: rgba(0, 0, 0, 0.2);
}

.submenu.expanded {
    max-height: 1000px;
}

.submenu-item {
    padding-left: 0;
}

.submenu-link {
    color: var(--sidebar-color, #dee2e6);
    padding: 10px 20px 10px 55px;
    display: flex;
    align-items: center;
    text-decoration: none;
    transition: all 0.2s;
    font-size: 0.9rem;
}

.submenu-link:hover,
.submenu-link.active {
    background: var(--sidebar-hover-bg, #495057);
    color: var(--sidebar-active-color, #fff);
}

.sidebar.collapsed .submenu {
    display: none;
}

.sidebar.collapsed .nav-link.has-submenu::after {
    display: none;
}