/* ==========================================================================
   CherryAI — MODERN SIDEBAR NAVIGATION
   Grouped IA, collapsible, responsive icon rail, smooth transitions
   ========================================================================== */

.sidebar-nav {
    padding: 8px 10px 20px;
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
}

.sidebar-nav::-webkit-scrollbar { width: 4px; }
.sidebar-nav::-webkit-scrollbar-track { background: transparent; }
.sidebar-nav::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.2); border-radius: 4px; }
.sidebar-nav::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.3); }

/* ---- Overview / Top-Level Nav Item ---- */
.nav-item {
    display: flex;
    align-items: center;
    padding: 10px 12px;
    color: rgba(255,255,255,0.75);
    text-decoration: none;
    border-radius: 8px;
    margin-bottom: 2px;
    transition: all 0.15s ease;
    gap: 12px;
    font-size: 13px;
    font-weight: 600;
}

.nav-item:hover {
    background: rgba(255,255,255,0.08);
    color: white;
}

.nav-item.active {
    background: rgba(255,255,255,0.12);
    color: white;
}

.nav-item-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--info, #3b82f6), var(--info, #1d4ed8));
    flex-shrink: 0;
    font-size: 14px;
    color: white;
}

.nav-item-overview .nav-item-icon {
    background: linear-gradient(135deg, var(--info, #3b82f6), var(--info, #1d4ed8));
}

.nav-item-label {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ---- Section Labels ---- */
.nav-section-label {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: rgba(255,255,255,0.3);
    padding: 12px 12px 4px;
}

/* ---- Menu Group (Accordion) ---- */
.menu-group {
    margin-bottom: 2px;
}

.menu-group-header {
    display: flex;
    align-items: center;
    padding: 8px 12px;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.15s ease;
    user-select: none;
    position: relative;
    gap: 10px;
}

.menu-group-header:hover {
    background: rgba(255,255,255,0.06);
}

.menu-group.expanded > .menu-group-header {
    background: rgba(255,255,255,0.08);
}

.menu-group-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    flex-shrink: 0;
    font-size: 14px;
    color: white;
    transition: all 0.2s ease;
}

/* Color-coded group icons */
.menu-group[data-section="work"] .menu-group-icon { background: linear-gradient(135deg, #8b5cf6, #7c3aed); }
.menu-group[data-section="assets"] .menu-group-icon { background: linear-gradient(135deg, var(--success, #10b981), var(--success, #059669)); }
.menu-group[data-section="materials"] .menu-group-icon { background: linear-gradient(135deg, var(--warning, #f59e0b), var(--warning, #d97706)); }
.menu-group[data-section="finance"] .menu-group-icon { background: linear-gradient(135deg, #06b6d4, #0891b2); }
.menu-group[data-section="admin"] .menu-group-icon { background: linear-gradient(135deg, var(--text-muted, #64748b), var(--text-secondary, #475569)); }
.menu-group[data-section="reports"] .menu-group-icon { background: linear-gradient(135deg, #6366f1, #4f46e5); }
.menu-group[data-section="setup"] .menu-group-icon { background: linear-gradient(135deg, #84cc16, #65a30d); }

.menu-group-title {
    font-size: 13px;
    font-weight: 600;
    color: white;
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.menu-group-arrow {
    width: 16px;
    height: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    color: rgba(255,255,255,0.4);
    font-size: 12px;
}

.menu-group.expanded .menu-group-arrow {
    transform: rotate(180deg);
    color: rgba(255,255,255,0.7);
}

/* ---- Menu Items (Collapsible Children) ---- */
.menu-items {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s cubic-bezier(0.4, 0, 0.2, 1),
                opacity 0.2s ease,
                padding 0.2s ease;
    opacity: 0;
    padding-left: 0;
}

.menu-group.expanded .menu-items {
    max-height: 500px;
    opacity: 1;
    padding-left: 44px;
    padding-top: 2px;
    padding-bottom: 4px;
}

.menu-item {
    display: flex;
    align-items: center;
    padding: 7px 12px;
    color: rgba(255,255,255,0.6);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    border-radius: 6px;
    margin-bottom: 1px;
    transition: all 0.12s ease;
    position: relative;
    gap: 10px;
}

.menu-item::before {
    content: '';
    position: absolute;
    left: -8px;
    top: 50%;
    transform: translateY(-50%);
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: rgba(255,255,255,0.15);
    transition: all 0.15s ease;
}

.menu-item:hover {
    background: rgba(255,255,255,0.06);
    color: white;
}

.menu-item:hover::before {
    background: rgba(255,255,255,0.4);
}

.menu-item.active {
    background: rgba(255,255,255,0.1);
    color: white;
}

.menu-item.active::before {
    background: var(--info, #3b82f6);
    box-shadow: 0 0 6px rgba(59, 130, 246, 0.5);
}

.menu-item-icon {
    width: 16px;
    text-align: center;
    opacity: 0.6;
    flex-shrink: 0;
    font-size: 13px;
}

.menu-item:hover .menu-item-icon,
.menu-item.active .menu-item-icon {
    opacity: 1;
}

/* ---- Recent Nav ---- */
.recent-nav-section {
    margin-top: 4px;
}

.recent-item {
    opacity: 0.8;
}

/* ---- Sidebar Brand ---- */
.sidebar-brand {
    display: flex;
    align-items: center;
    padding: 16px 12px;
    gap: 10px;
    position: relative;
}

.sidebar-brand-info {
    flex: 1;
    min-width: 0;
}

.sidebar-brand-logo {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    flex-shrink: 0;
}

.sidebar-brand-text {
    font-size: 15px;
    font-weight: 700;
    color: white;
    white-space: nowrap;
}

.sidebar-brand-module {
    font-size: 10px;
    color: rgba(255,255,255,0.5);
    white-space: nowrap;
}

.sidebar-collapse-btn {
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255,255,255,0.1);
    background: rgba(255,255,255,0.06);
    backdrop-filter: blur(8px);
    color: rgba(255,255,255,0.5);
    border-radius: 50%;
    cursor: pointer;
    flex-shrink: 0;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.sidebar-collapse-btn .collapse-arrow {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.sidebar-collapse-btn:hover {
    background: rgba(255,255,255,0.14);
    border-color: rgba(255,255,255,0.2);
    color: white;
    box-shadow: 0 0 12px rgba(59, 130, 246, 0.25);
    transform: scale(1.08);
}

.sidebar-collapse-btn:active {
    transform: scale(0.95);
}

.sidebar.collapsed .sidebar-collapse-btn .collapse-arrow {
    transform: rotate(180deg);
}

/* ---- Sidebar Footer ---- */
.sidebar-footer {
    padding: 8px 10px;
    border-top: 1px solid rgba(255,255,255,0.08);
}

.sidebar-user-info {
    display: flex;
    align-items: center;
    padding: 8px 12px;
    gap: 10px;
}

.sidebar-user-avatar {
    width: 30px;
    height: 30px;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--success, #10b981), var(--success, #059669));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 700;
    color: white;
    flex-shrink: 0;
}

.sidebar-user-details {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.sidebar-user-name {
    font-size: 12px;
    font-weight: 600;
    color: rgba(255,255,255,0.9);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-user-role {
    font-size: 10px;
    color: rgba(255,255,255,0.4);
}

/* ---- Sidebar Overlay (Mobile) ---- */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 998;
}

.sidebar-overlay.active {
    display: block;
}

/* ---- Collapsed Sidebar (Icon Rail) ---- */
.sidebar.collapsed {
    width: 64px;
    min-width: 64px;
}

.sidebar.collapsed .sidebar-brand-info,
.sidebar.collapsed .nav-item-label,
.sidebar.collapsed .menu-group-title,
.sidebar.collapsed .menu-group-arrow,
.sidebar.collapsed .nav-section-label,
.sidebar.collapsed .sidebar-user-details,
.sidebar.collapsed .org-selector-label,
.sidebar.collapsed .org-selector-arrow,
.sidebar.collapsed .recent-nav-section,
.sidebar.collapsed .menu-items {
    display: none !important;
    max-height: 0 !important;
    opacity: 0 !important;
}

.sidebar.collapsed .sidebar-brand {
    justify-content: center;
    padding: 16px 8px;
}

.sidebar.collapsed .sidebar-collapse-btn {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
}

.sidebar.collapsed .sidebar-collapse-btn i,
.sidebar.collapsed .sidebar-collapse-btn .collapse-arrow {
    transform: rotate(180deg);
}

.sidebar.collapsed .menu-group-header {
    justify-content: center;
    padding: 8px;
}

.sidebar.collapsed .menu-group-icon {
    margin: 0;
}

.sidebar.collapsed .nav-item {
    justify-content: center;
    padding: 10px 8px;
}

.sidebar.collapsed .nav-item-icon {
    margin: 0;
}

.sidebar.collapsed .sidebar-nav {
    padding: 8px 6px;
}

.sidebar.collapsed .sidebar-footer {
    padding: 8px 6px;
}

.sidebar.collapsed .sidebar-user-info {
    justify-content: center;
    padding: 8px;
}

.sidebar.collapsed .org-selector-wrapper {
    display: none;
}

/* Tooltip on collapsed hover */
.sidebar.collapsed .menu-group-header[data-tooltip] {
    position: relative;
}

.sidebar.collapsed .menu-group-header[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    left: calc(100% + 8px);
    top: 50%;
    transform: translateY(-50%);
    padding: 6px 12px;
    background: var(--surface-secondary, #1e293b);
    color: white;
    font-size: 12px;
    font-weight: 500;
    border-radius: 6px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.15s ease;
    z-index: 1000;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    pointer-events: none;
}

.sidebar.collapsed .menu-group-header:hover[data-tooltip]::after {
    opacity: 1;
    visibility: visible;
}

.sidebar.collapsed .nav-item[data-nav-route]::after {
    content: attr(data-nav-route);
    position: absolute;
    left: calc(100% + 8px);
    top: 50%;
    transform: translateY(-50%);
    padding: 6px 12px;
    background: var(--surface-secondary, #1e293b);
    color: white;
    font-size: 12px;
    font-weight: 500;
    border-radius: 6px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.15s ease;
    z-index: 1000;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    pointer-events: none;
}

.sidebar.collapsed .nav-item:hover[data-nav-route]::after {
    opacity: 1;
    visibility: visible;
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
    .cherryai-sidebar {
        width: 64px !important;
        min-width: 64px !important;
    }
    .cherryai-sidebar .sidebar-brand-info,
    .cherryai-sidebar .nav-item-label,
    .cherryai-sidebar .menu-group-title,
    .cherryai-sidebar .menu-group-arrow,
    .cherryai-sidebar .nav-section-label,
    .cherryai-sidebar .sidebar-user-details,
    .cherryai-sidebar .org-selector-label,
    .cherryai-sidebar .org-selector-arrow,
    .cherryai-sidebar .recent-nav-section,
    .cherryai-sidebar .menu-items {
        display: none !important;
        max-height: 0 !important;
        opacity: 0 !important;
    }
    .cherryai-sidebar .menu-group-header {
        justify-content: center;
        padding: 8px;
    }
    .cherryai-sidebar .nav-item {
        justify-content: center;
        padding: 10px 8px;
    }
    .cherryai-sidebar .sidebar-nav {
        padding: 8px 6px;
    }
    .cherryai-sidebar .sidebar-brand {
        justify-content: center;
        padding: 16px 8px;
    }
    .cherryai-sidebar .sidebar-footer {
        padding: 8px 6px;
    }
    .cherryai-sidebar .sidebar-user-info {
        justify-content: center;
        padding: 8px;
    }
    .cherryai-sidebar .org-selector-wrapper {
        display: none;
    }
    .cherryai-sidebar .sidebar-collapse-btn {
        display: none;
    }
}

@media (max-width: 768px) {
    .cherryai-sidebar {
        position: fixed !important;
        left: -280px;
        top: 0;
        bottom: 0;
        width: 260px !important;
        min-width: 260px !important;
        z-index: 999;
        transition: left 0.25s ease;
    }
    .cherryai-sidebar.mobile-open {
        left: 0;
    }
    .cherryai-sidebar.mobile-open .sidebar-brand-info,
    .cherryai-sidebar.mobile-open .nav-item-label,
    .cherryai-sidebar.mobile-open .menu-group-title,
    .cherryai-sidebar.mobile-open .menu-group-arrow,
    .cherryai-sidebar.mobile-open .nav-section-label,
    .cherryai-sidebar.mobile-open .sidebar-user-details,
    .cherryai-sidebar.mobile-open .org-selector-label,
    .cherryai-sidebar.mobile-open .org-selector-arrow {
        display: block !important;
        opacity: 1 !important;
    }
    .cherryai-sidebar.mobile-open .menu-items {
        display: block !important;
    }
    .cherryai-sidebar.mobile-open .menu-group.expanded .menu-items {
        max-height: 500px !important;
        opacity: 1 !important;
    }
    .cherryai-sidebar.mobile-open .menu-group-header {
        justify-content: flex-start;
        padding: 8px 12px;
    }
    .cherryai-sidebar.mobile-open .nav-item {
        justify-content: flex-start;
        padding: 10px 12px;
    }
    .cherryai-sidebar.mobile-open .sidebar-brand {
        justify-content: flex-start;
        padding: 16px 12px;
    }
    .cherryai-sidebar.mobile-open .sidebar-collapse-btn {
        display: flex;
    }
    .main-content {
        margin-left: 0 !important;
    }
}

/* ---- Process Flow Indicators (legacy support) ---- */
.menu-item[data-step]::after {
    content: attr(data-step);
    position: absolute;
    right: 8px;
    font-size: 10px;
    font-weight: 600;
    color: rgba(255,255,255,0.4);
    background: rgba(255,255,255,0.1);
    padding: 2px 6px;
    border-radius: 4px;
}

/* ---- Quick Action (legacy compat) ---- */
.quick-action {
    display: flex;
    align-items: center;
    padding: 10px 12px;
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    border-radius: 10px;
    margin-bottom: 4px;
    transition: all 0.2s ease;
}

.quick-action:hover {
    background: rgba(255,255,255,0.08);
    color: white;
}

.quick-action.active {
    background: rgba(255,255,255,0.12);
    color: white;
}

.quick-action-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    margin-right: 12px;
    flex-shrink: 0;
    background: linear-gradient(135deg, var(--info, #3b82f6), var(--info, #1d4ed8));
}

.quick-action-icon svg {
    width: 18px;
    height: 18px;
    color: white;
}

.quick-action-text {
    font-size: 13px;
    font-weight: 600;
    color: inherit;
}

/* ---- Divider ---- */
.menu-divider {
    height: 1px;
    background: rgba(255,255,255,0.08);
    margin: 8px 12px;
}

/* ---- Badge ---- */
.menu-item-badge {
    margin-left: auto;
    padding: 2px 8px;
    font-size: 10px;
    font-weight: 600;
    border-radius: 10px;
    background: rgba(255,255,255,0.15);
    color: rgba(255,255,255,0.9);
}

.menu-item-badge.alert {
    background: linear-gradient(135deg, var(--danger, #ef4444), var(--danger, #dc2626));
    color: white;
}

/* ---- Menu Group Subtitle (legacy compat) ---- */
.menu-group-subtitle {
    font-size: 11px;
    color: rgba(255,255,255,0.5);
    margin-top: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ---- Menu Group Content (legacy compat) ---- */
.menu-group-content {
    flex: 1;
    min-width: 0;
}

/* ---- Sidebar Footer (legacy) ---- */
.sidebar-footer .quick-action {
    margin-bottom: 0;
}

.sidebar-footer .quick-action-icon {
    background: linear-gradient(135deg, var(--text-muted, #64748b), var(--text-secondary, #475569));
}

/* ---- Sign In Button ---- */
.nav-item-signin {
    background: rgba(59, 130, 246, 0.15);
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: 8px;
    margin: 4px 0;
    color: #93c5fd;
    font-weight: 600;
}
.nav-item-signin:hover {
    background: rgba(59, 130, 246, 0.25);
    border-color: rgba(59, 130, 246, 0.5);
    color: #bfdbfe;
}