/* ========================================
   NAVIGATION
   Collapsible sidebar navigation with assistant selector and menu items.
   ======================================== */

.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: 280px;
    transition: width 0.3s ease;
    z-index: 1000;
    overflow: hidden;
}

.sidebar.collapsed {
    width: 60px;
}

.sidebar-header {
    flex-shrink: 0;
    padding-left: 1rem !important;
    padding-right: 1rem !important;
    min-height: 66px;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
}

.sidebar-title {
    font-size: 1.5rem !important;
    font-weight: 500 !important;
    line-height: 1.2 !important;
    color: var(--bs-gray-900) !important;
    padding-left: 0.5rem !important;
    white-space: nowrap;
    overflow: hidden;
}

.sidebar-title .bi,
.sidebar-title svg {
    color: var(--bs-primary) !important;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.sidebar-title span {
    display: inline-block;
    opacity: 0;
    transform: translateX(-10px);
    transition: opacity 0.2s ease 0.1s, transform 0.2s ease 0.1s;
}

.sidebar:not(.collapsed) .sidebar-title span {
    opacity: 1;
    transform: translateX(0);
}

.sidebar-toggle {
    cursor: pointer;
    transition: color 0.2s ease;
    text-decoration: none !important;
}

.sidebar-toggle:hover {
    color: var(--bs-primary);
    text-decoration: none !important;
}

.sidebar.collapsed .sidebar-header {
    justify-content: center !important;
}

.sidebar.collapsed .sidebar-toggle {
    margin: 0;
}

.sidebar-section {
    padding-left: 1rem !important;
    padding-right: 1rem !important;
    padding-top: 1.5rem !important;
    padding-bottom: 1rem !important;
    border-bottom: none !important;
}

.top-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-home-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    flex-shrink: 0;
    transition: background-color 0.2s ease;
}

.btn-home-icon:hover,
.btn-home-icon:active {
    background: var(--bs-primary) !important;
}

.assistant-selector {
    position: relative;
    flex: 1;
    min-width: 0;
}

.assistant-selector .dropdown {
    width: 100%;
}

.sidebar .btn-assistant,
.sidebar .btn-assistant.border {
    width: 100%;
    height: 38px;
    text-align: left;
    transition: all 0.2s ease;
    border-color: var(--bs-gray-300) !important;
}

.sidebar .btn-assistant:hover,
.sidebar .btn-assistant.border:hover {
    background: var(--bs-gray-200) !important;
    border-color: var(--bs-gray-300) !important;
}

.btn-assistant::after {
    display: none !important;
}

.btn-assistant[aria-expanded="true"] .dropdown-chevron {
    transform: rotate(180deg);
    transition: transform 0.2s ease;
}

.assistant-dropdown-menu {
    width: 100%;
    max-height: 400px;
    padding: 0;
}

.assistant-dropdown-menu:not(.show) {
    display: none;
}

.assistant-dropdown-menu.show {
    display: block;
}

.assistant-search input {
    border-color: var(--bs-gray-300) !important;
}

.assistant-list {
    overflow-y: auto;
    max-height: 300px;
}

.assistant-item {
    cursor: pointer;
    background: none;
    border: none;
    width: 100%;
    text-align: left;
    border-radius: 0;
    transition: all 0.2s ease;
    font-size: 0.875rem;
}

.assistant-item:hover {
    background: var(--gray-100);
    color: var(--bs-primary);
}

.assistant-item.active {
    background: var(--bs-primary-bg-subtle);
    color: var(--bs-primary);
}

.nav-icon-item {
    width: auto;
    height: auto;
    padding: 0.65rem 1rem;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.875rem;
    background: transparent !important;
    border: none !important;
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-icon-item:hover {
    background: transparent !important;
    border: none !important;
}

.nav-icon-item.active {
    background: transparent !important;
    border: none !important;
}

.nav-icon-item .bi {
    font-size: 1rem;
    color: var(--bs-gray-900) !important;
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.collapsed {
        transform: translateX(0);
        width: 60px;
    }
}

.sidebar-nav-container {
    flex: 1 1 auto;
    overflow: hidden;
    min-height: 0;
    padding-left: calc(0.5rem + 1px);
    padding-right: 0.5rem;
}

.sidebar .bb-sidebar-top-row {
    display: none !important;
}

.sidebar .bb-sidebar-content {
    background-color: transparent !important;
    border: none !important;
}

.sidebar .bb-sidebar-nav .nav-link {
    font-size: 0.875rem !important;
    padding-left: calc(1.75rem - 1px) !important;
}

.sidebar .bb-sidebar-nav .nav-link.active {
    font-weight: 600 !important;
}

.sidebar .bb-sidebar-nav .nav-link .bi,
.sidebar .bb-sidebar-nav .nav-link svg {
    color: var(--bs-gray-900) !important;
}

.sidebar .bb-sidebar-nav .nav-item-parent > .nav-link,
.sidebar .bb-sidebar-nav .nav-item-parent > .nav-link.active {
    font-weight: normal !important;
}

.sidebar .bb-sidebar-nav .nav-link:not(.active) {
    font-weight: normal !important;
}

.sidebar-footer {
    flex-shrink: 0;
}

.sidebar-footer-collapsed {
    flex-shrink: 0;
}