/*
 * ==========================================================================
 * SIDEBAR - Navigation sidebar and app switcher styles
 * ==========================================================================
 * Auto-copied from pyeza to apps via CopyStylesWithTheme().
 * App-specific dimensions (--sidebar-width, etc.) stay in app layout.css.
 * ==========================================================================
 */

/* ========================================
   SIDEBAR TYPOGRAPHY TOKENS
   ======================================== */
:root {
    --sidebar-fs-logo: 1.25rem;       /* 20px — brand logo text */
    --sidebar-fs-nav: 0.9375rem;      /* 15px — nav items, app name */
    --sidebar-fs-base: 0.875rem;      /* 14px — user info, menu items */
    --sidebar-fs-sm: 0.8125rem;       /* 13px — app options, tooltips */
    --sidebar-fs-xs: 0.75rem;         /* 12px — badges, captions */
    --sidebar-fs-section: 0.625rem;   /* 10px — section titles, labels */
    --sidebar-ls-logo: -0.01em;       /* logo text tightening */
    --sidebar-ls-section: 0.08em;     /* uppercase label tracking */
}

/* ========================================
   SIDEBAR
   ======================================== */

.sidebar {
    width: var(--sidebar-width);
    height: 100vh;
    position: fixed;
    left: 0;
    top: 0;
    background: var(--bg-sidebar);
    border-right: var(--border-width) solid var(--border);
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: width var(--transition-speed) ease;
    overflow: visible;
}

.sidebar.collapsed {
    width: var(--sidebar-collapsed-width);
}

.sidebar-header {
    padding: 1.25rem; /* 20px */
    border-bottom: var(--border-width) solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 4.5625rem; /* 73px */
    position: relative;
}

.sidebar.collapsed .sidebar-header {
    padding: 1rem; /* 16px */
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem; /* 12px */
    text-decoration: none;
    overflow: hidden;
}

.logo-mark {
    width: 2.25rem; /* 36px */
    height: 2.25rem;
    min-width: 2.25rem;
    background: linear-gradient(135deg, var(--accent-terracotta) 0%, var(--accent-terracotta-dark) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
}

.logo-mark svg {
    width: 1.25rem; /* 20px */
    height: 1.25rem;
    color: white;
}

.logo-text {
    font-family: var(--font-display);
    font-size: var(--sidebar-fs-logo); /* 20px */
    font-weight: 500;
    color: var(--text-primary);
    letter-spacing: var(--sidebar-ls-logo);
    white-space: nowrap;
    opacity: 1;
    transition: opacity var(--transition-speed) ease;
}

.sidebar.collapsed .logo-text {
    opacity: 0;
    width: 0;
}

/* Collapse Toggle Button - Floating on sidebar edge */
.sidebar-toggle {
    width: 1.5rem; /* 24px */
    height: 1.5rem;
    min-width: 1.5rem;
    border-radius: var(--radius-round);
    border: var(--border-width) solid var(--border);
    background: var(--bg-card);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    transition: all var(--transition-fast);
    position: absolute;
    right: -0.75rem; /* -12px */
    top: 50%;
    transform: translateY(-50%);
    z-index: 200;
    box-shadow: var(--shadow-sm);
}

.sidebar-toggle:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--border);
    box-shadow: var(--shadow-md);
}

.sidebar-toggle svg {
    width: 1rem; /* 16px */
    height: 1rem;
    transition: transform var(--transition-speed) ease;
}

.sidebar.collapsed .sidebar-toggle svg {
    transform: rotate(180deg);
}

/* Sidebar Navigation */
.sidebar-nav {
    flex: 1;
    padding: 1rem 0.75rem; /* 16px 12px */
    overflow-y: auto;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
}

.nav-section {
    margin-bottom: 1.5rem; /* 24px */
}

.nav-section-title {
    font-size: var(--sidebar-fs-section); /* 11px */
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: var(--sidebar-ls-section);
    color: var(--text-muted);
    padding: 0.5rem 0.75rem; /* 8px 12px */
    margin-bottom: 0.25rem; /* 4px */
    white-space: nowrap;
    overflow: hidden;
    opacity: 1;
    transition: opacity var(--transition-speed) ease;
}

.sidebar.collapsed .nav-section-title {
    opacity: 0;
    height: 0;
    padding: 0;
    margin: 0;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem; /* 12px */
    padding: 0.75rem 0.875rem; /* 12px 14px */
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--text-secondary);
    font-size: var(--sidebar-fs-nav); /* 15px */
    font-weight: 500;
    transition: all var(--transition-fast);
    margin-bottom: 0.125rem; /* 2px */
    position: relative;
    white-space: nowrap;
}

.nav-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 0.1875rem; /* 3px */
    height: 0;
    background: var(--accent-terracotta);
    border-radius: 0 0.125rem 0.125rem 0; /* 0 2px 2px 0 */
    transition: height var(--transition-fast);
}

.nav-item:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.nav-item.active {
    background: var(--bg-card);
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
}

.nav-item.active::before {
    height: 1.25rem; /* 20px */
}

.nav-icon {
    width: 1.25rem; /* 20px */
    height: 1.25rem;
    min-width: 1.25rem;
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

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

.nav-text {
    opacity: 1;
    transition: opacity var(--transition-speed) ease;
}

.sidebar.collapsed .nav-text {
    opacity: 0;
}

.nav-badge {
    margin-left: auto;
    font-size: var(--sidebar-fs-xs); /* 12px */
    font-weight: 600;
    padding: 0.125rem 0.5rem; /* 2px 8px */
    border-radius: var(--radius-full); /* pill */
    background: var(--accent-terracotta-light);
    color: var(--accent-terracotta);
    opacity: 1;
    transition: opacity var(--transition-speed) ease;
}

.sidebar.collapsed .nav-badge {
    opacity: 0;
    position: absolute;
}

.nav-badge.new {
    background: var(--accent-sage-light);
    color: var(--accent-sage);
}

/* Sidebar Footer */
.sidebar-footer {
    padding: 1rem; /* 16px */
    border-top: var(--border-width) solid var(--border);
    flex-shrink: 0;
    position: relative;
}

.sidebar.collapsed .sidebar-footer {
    padding: 0.75rem 0.625rem; /* 12px 10px */
}

.sidebar.collapsed .user-card {
    justify-content: center;
    padding: 0.5rem; /* 8px */
    gap: 0;
}

.user-card {
    display: flex;
    align-items: center;
    gap: 0.75rem; /* 12px */
    padding: 0.625rem 0.75rem; /* 10px 12px */
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition-fast);
    overflow: hidden;
}

.user-card:hover {
    background: var(--bg-hover);
}

.user-avatar {
    width: 2.25rem; /* 36px */
    height: 2.25rem;
    min-width: 2.25rem;
    border-radius: var(--radius-round);
    background: linear-gradient(135deg, var(--accent-navy) 0%, #2d4558 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--sidebar-fs-base); /* 14px */
    font-weight: 600;
}

.user-info {
    flex: 1;
    min-width: 0;
    opacity: 1;
    transition: opacity var(--transition-speed) ease;
}

.sidebar.collapsed .user-info {
    opacity: 0;
    width: 0;
}

.user-name {
    font-size: var(--sidebar-fs-base); /* 14px */
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-plan {
    font-size: var(--sidebar-fs-xs); /* 12px */
    color: var(--text-muted);
}

.user-menu-btn {
    width: 1.75rem; /* 28px */
    height: 1.75rem;
    min-width: 1.75rem;
    border-radius: var(--radius-sm);
    border: none;
    background: transparent;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    transition: all var(--transition-fast);
    opacity: 1;
}

.sidebar.collapsed .user-menu-btn {
    opacity: 0;
    position: absolute;
}

.user-menu-btn:hover {
    background: var(--border);
    color: var(--text-primary);
}

.user-menu-btn svg {
    width: 1rem; /* 16px */
    height: 1rem;
    transition: transform var(--transition-fast);
}

.user-menu-btn.active svg {
    transform: rotate(180deg);
}

/* User Menu Popup */
.user-menu {
    position: absolute;
    bottom: calc(100% + 0.5rem); /* 100% + 8px */
    left: 1rem; /* 16px */
    right: 1rem;
    background: var(--bg-card);
    border: var(--border-width) solid var(--border);
    border-radius: var(--radius-lg); /* 12px */
    box-shadow: var(--shadow-lg);
    padding: 0.5rem; /* 8px */
    opacity: 0;
    visibility: hidden;
    transform: translateY(0.5rem); /* 8px */
    transition: all var(--transition-fast);
    z-index: 1000;
}

.user-menu.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.sidebar.collapsed .user-menu {
    left: calc(var(--sidebar-collapsed-width) + 0.5rem); /* + 8px */
    right: auto;
    bottom: 1rem; /* 16px */
    width: 12.5rem; /* 200px */
}

.user-menu-item {
    display: flex;
    align-items: center;
    gap: 0.75rem; /* 12px */
    width: 100%;
    padding: 0.625rem 0.75rem; /* 10px 12px */
    border-radius: var(--radius-md); /* 8px */
    border: none;
    background: transparent;
    cursor: pointer;
    text-decoration: none;
    font-family: var(--font-body);
    font-size: var(--sidebar-fs-base); /* 14px */
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.user-menu-item:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.user-menu-item--danger {
    color: var(--status-error);
}

.user-menu-item--danger:hover {
    background: var(--status-error-light);
    color: var(--status-error);
}

.user-menu-icon {
    width: 1.125rem; /* 18px */
    height: 1.125rem;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.7;
}

.user-menu-icon svg {
    width: 1.125rem; /* 18px */
    height: 1.125rem;
}

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

.user-menu-text {
    flex: 1;
    text-align: left;
}

.user-menu-divider {
    height: 1px;
    background: var(--border-light);
    margin: 0.5rem 0; /* 8px 0 */
}

/* Tooltip for collapsed state */
.nav-item[data-tooltip] {
    position: relative;
}

.sidebar.collapsed .nav-item::after {
    content: attr(data-tooltip);
    position: absolute;
    left: calc(100% + 0.75rem); /* 100% + 12px */
    top: 50%;
    transform: translateY(-50%);
    background: var(--text-primary);
    color: var(--text-inverse);
    padding: 0.375rem 0.75rem; /* 6px 12px */
    border-radius: var(--radius-sm);
    font-size: var(--sidebar-fs-sm); /* 13px */
    font-weight: 500;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    z-index: 1000;
    pointer-events: none;
}

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

/* ========================================
   APP SWITCHER
   ======================================== */

.app-switcher {
    position: relative;
    padding: 0.75rem; /* 12px */
    border-bottom: var(--border-width) solid var(--border);
}

.app-switcher-btn {
    display: flex;
    align-items: center;
    gap: 0.75rem; /* 12px */
    width: 100%;
    padding: 0.625rem 0.75rem; /* 10px 12px */
    background: var(--bg-card);
    border: var(--border-width) solid var(--border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    font-family: var(--font-body);
}

.app-switcher-btn:hover {
    border-color: var(--color-terracotta);
    box-shadow: var(--shadow-sm);
}

.app-switcher.open .app-switcher-btn {
    border-color: var(--color-terracotta);
    background: var(--color-terracotta-light);
}

/* App Icon with Color Variants */
.app-switcher-icon {
    width: 2rem; /* 32px */
    height: 2rem;
    min-width: 2rem;
    border-radius: var(--radius-md); /* 8px */
    display: flex;
    align-items: center;
    justify-content: center;
}

.app-switcher-icon svg {
    width: 1.125rem; /* 18px */
    height: 1.125rem;
    color: white;
    stroke: white;
}

.app-icon--users {
    background: linear-gradient(135deg, var(--app-color-users) 0%, var(--app-color-users-dark) 100%);
}

.app-icon--clients {
    background: linear-gradient(135deg, var(--app-color-clients) 0%, var(--app-color-clients-dark) 100%);
}

.app-icon--inventory {
    background: linear-gradient(135deg, var(--app-color-inventory) 0%, var(--app-color-inventory-dark) 100%);
}

.app-icon--services {
    background: linear-gradient(135deg, var(--app-color-services) 0%, var(--app-color-services-dark) 100%);
}

.app-icon--locations {
    background: linear-gradient(135deg, var(--app-color-locations) 0%, var(--app-color-locations-dark) 100%);
}

.app-icon--assets {
    background: linear-gradient(135deg, var(--app-color-assets) 0%, var(--app-color-assets-dark) 100%);
}

.app-icon--suppliers {
    background: linear-gradient(135deg, var(--app-color-suppliers) 0%, var(--app-color-suppliers-dark) 100%);
}

.app-icon--sales {
    background: linear-gradient(135deg, var(--app-color-sales) 0%, var(--app-color-sales-dark) 100%);
}

.app-icon--purchases {
    background: linear-gradient(135deg, var(--app-color-purchases) 0%, var(--app-color-purchases-dark) 100%);
}

.app-icon--expenses {
    background: linear-gradient(135deg, var(--app-color-expenses) 0%, var(--app-color-expenses-dark) 100%);
}

.app-icon--reports {
    background: linear-gradient(135deg, var(--app-color-reports) 0%, var(--app-color-reports-dark) 100%);
}

.app-icon--admin {
    background: linear-gradient(135deg, var(--app-color-admin) 0%, var(--app-color-admin-dark) 100%);
}

.app-switcher-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    text-align: left;
    transition: opacity var(--transition-speed) ease;
}

.sidebar.collapsed .app-switcher-info {
    opacity: 0;
    width: 0;
}

.app-switcher-name {
    font-size: var(--sidebar-fs-nav); /* 15px */
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.app-switcher-group-label {
    font-size: var(--sidebar-fs-section); /* 11px */
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: var(--sidebar-ls-section);
    color: var(--text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.2;
}

.app-switcher-chevron {
    width: 1rem; /* 16px */
    height: 1rem;
    min-width: 1rem;
    color: var(--text-muted);
    transition: transform var(--transition-fast), opacity var(--transition-speed) ease;
}

.app-switcher-chevron svg {
    width: 1rem; /* 16px */
    height: 1rem;
}

.app-switcher.open .app-switcher-chevron {
    transform: rotate(180deg);
}

.sidebar.collapsed .app-switcher-chevron {
    opacity: 0;
    width: 0;
    min-width: 0;
}

/* Collapsed state - center the button and icon */
.sidebar.collapsed .app-switcher {
    padding: 0.75rem 0.625rem; /* 12px 10px */
}

.sidebar.collapsed .app-switcher-btn {
    justify-content: center;
    padding: 0.5rem; /* 8px */
    gap: 0;
}

/* App Switcher Dropdown Menu */
.app-switcher-menu {
    position: absolute;
    top: calc(100% + 0.25rem); /* 100% + 4px */
    left: 0.75rem; /* 12px */
    right: 0.75rem;
    background: var(--bg-card);
    border: var(--border-width) solid var(--border);
    border-radius: var(--radius-lg); /* 12px */
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-0.5rem); /* -8px */
    transition: all var(--transition-fast);
}

.app-switcher.open .app-switcher-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    overflow-y: auto;
}

/* Collapsed state - menu appears to the right */
.sidebar.collapsed .app-switcher-menu {
    left: calc(var(--sidebar-collapsed-width) + 0.5rem); /* + 8px */
    right: auto;
    width: 13.75rem; /* 220px */
    top: 0;
}

.app-switcher-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem; /* 12px 16px */
    font-size: var(--sidebar-fs-section); /* 11px */
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: var(--sidebar-ls-section);
    color: var(--text-muted);
    border-bottom: var(--border-width) solid var(--border-light);
}

.app-switcher-close {
    width: 1.25rem; /* 20px */
    height: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    cursor: pointer;
    padding: 0;
    transition: all var(--transition-fast);
}

.app-switcher-close:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

.app-switcher-close svg {
    width: 0.875rem; /* 14px */
    height: 0.875rem;
}

.app-switcher-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.25rem; /* 4px */
    padding: 0.5rem; /* 8px */
}

.app-switcher-grid.app-switcher-grid--cols-1 {
    grid-template-columns: 1fr;
}

.app-switcher-grid--cols-1 .app-option {
    flex-direction: row;
    align-items: center;
    padding: 0.625rem 0.75rem; /* 10px 12px */
}

.app-switcher-grid--cols-1 .app-option-name {
    text-align: left;
}

.sidebar.collapsed .app-switcher-grid {
    grid-template-columns: 1fr;
}

/* Hide app option names in collapsed mode menu */
.sidebar.collapsed .app-option-name {
    display: none;
}

.sidebar.collapsed .app-option {
    padding: 0.625rem; /* 10px */
}

/* Hide the "Switch App" header in collapsed mode */
.sidebar.collapsed .app-switcher-header {
    display: none;
}

.app-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem; /* 8px */
    padding: 1rem 0.75rem; /* 16px 12px */
    background: transparent;
    border: var(--border-width-thick) solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: var(--font-body);
}

.app-option:hover {
    background: var(--bg-hover);
}

.app-option.active {
    background: var(--accent-terracotta-light);
    border-color: var(--accent-terracotta);
}

.app-option-icon {
    width: 2.5rem; /* 40px */
    height: 2.5rem;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.app-option-icon svg {
    width: 1.25rem; /* 20px */
    height: 1.25rem;
    transition: all var(--transition-fast);
}

/* Non-active app options: colored icons on light backgrounds */
.app-option:not(.active) .app-icon--users {
    background: var(--app-color-users-light);
}
.app-option:not(.active) .app-icon--users svg {
    color: var(--app-color-users);
    stroke: var(--app-color-users);
}

.app-option:not(.active) .app-icon--clients {
    background: var(--app-color-clients-light);
}
.app-option:not(.active) .app-icon--clients svg {
    color: var(--app-color-clients);
    stroke: var(--app-color-clients);
}

.app-option:not(.active) .app-icon--inventory {
    background: var(--app-color-inventory-light);
}
.app-option:not(.active) .app-icon--inventory svg {
    color: var(--app-color-inventory);
    stroke: var(--app-color-inventory);
}

.app-option:not(.active) .app-icon--services {
    background: var(--app-color-services-light);
}
.app-option:not(.active) .app-icon--services svg {
    color: var(--app-color-services);
    stroke: var(--app-color-services);
}

.app-option:not(.active) .app-icon--locations {
    background: var(--app-color-locations-light);
}
.app-option:not(.active) .app-icon--locations svg {
    color: var(--app-color-locations);
    stroke: var(--app-color-locations);
}

.app-option:not(.active) .app-icon--assets {
    background: var(--app-color-assets-light);
}
.app-option:not(.active) .app-icon--assets svg {
    color: var(--app-color-assets);
    stroke: var(--app-color-assets);
}

.app-option:not(.active) .app-icon--suppliers {
    background: var(--app-color-suppliers-light);
}
.app-option:not(.active) .app-icon--suppliers svg {
    color: var(--app-color-suppliers);
    stroke: var(--app-color-suppliers);
}

.app-option:not(.active) .app-icon--sales {
    background: var(--app-color-sales-light);
}
.app-option:not(.active) .app-icon--sales svg {
    color: var(--app-color-sales);
    stroke: var(--app-color-sales);
}

.app-option:not(.active) .app-icon--purchases {
    background: var(--app-color-purchases-light);
}
.app-option:not(.active) .app-icon--purchases svg {
    color: var(--app-color-purchases);
    stroke: var(--app-color-purchases);
}

.app-option:not(.active) .app-icon--expenses {
    background: var(--app-color-expenses-light);
}
.app-option:not(.active) .app-icon--expenses svg {
    color: var(--app-color-expenses);
    stroke: var(--app-color-expenses);
}

.app-option:not(.active) .app-icon--reports {
    background: var(--app-color-reports-light);
}
.app-option:not(.active) .app-icon--reports svg {
    color: var(--app-color-reports);
    stroke: var(--app-color-reports);
}

.app-option:not(.active) .app-icon--admin {
    background: var(--app-color-admin-light);
}
.app-option:not(.active) .app-icon--admin svg {
    color: var(--app-color-admin);
    stroke: var(--app-color-admin);
}

/* Active app option: white icon on gradient background */
.app-option.active .app-option-icon svg {
    color: white;
    stroke: white;
}

.app-option-name {
    font-size: var(--sidebar-fs-sm); /* 13px */
    font-weight: 500;
    color: var(--text-primary);
    text-align: center;
}

.app-option.active .app-option-name {
    color: var(--accent-terracotta);
    font-weight: 600;
}

/* Collapsed tooltip for app switcher */
.sidebar.collapsed .app-switcher-btn::after {
    content: attr(data-tooltip);
    position: absolute;
    left: calc(100% + 0.75rem); /* 100% + 12px */
    top: 50%;
    transform: translateY(-50%);
    background: var(--text-primary);
    color: var(--text-inverse);
    padding: 0.375rem 0.75rem; /* 6px 12px */
    border-radius: var(--radius-sm);
    font-size: var(--sidebar-fs-sm); /* 13px */
    font-weight: 500;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    z-index: 1000;
    pointer-events: none;
}

.sidebar.collapsed .app-switcher-btn:hover::after {
    opacity: 1;
    visibility: visible;
}

/* Grouped App Switcher Menu — Accordion */
.app-switcher-group {
    padding: 0.125rem 0.5rem; /* 2px 8px */
    border-bottom: var(--border-width) solid var(--border-light);
}

.app-switcher-group:last-child {
    border-bottom: none;
}

.app-switcher-group-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    font-family: var(--font-body);
    font-size: var(--sidebar-fs-section); /* 11px */
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: var(--sidebar-ls-section);
    color: var(--text-muted);
    padding: 0.5rem 0.75rem; /* 8px 12px */
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.app-switcher-group-title:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

.app-switcher-group-chevron {
    width: 0.75rem; /* 12px */
    height: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition-fast);
}

.app-switcher-group-chevron svg {
    width: 0.75rem; /* 12px */
    height: 0.75rem;
}

.app-switcher-group.open .app-switcher-group-chevron {
    transform: rotate(180deg);
}

/* Accordion items container — collapsed by default */
.app-switcher-group-items {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-speed) ease;
}

.app-switcher-group.open .app-switcher-group-items {
    max-height: 25rem; /* 400px — large enough for any group */
}

.app-switcher-group .app-option {
    flex-direction: row;
    align-items: center;
    width: 100%;
    padding: 0.5rem 0.75rem; /* 8px 12px */
    gap: 0.625rem; /* 10px */
}

.app-switcher-group .app-option-icon {
    width: 1.75rem; /* 28px */
    height: 1.75rem;
}

.app-switcher-group .app-option-icon svg {
    width: 1rem; /* 16px */
    height: 1rem;
}

.app-switcher-group .app-option-name {
    text-align: left;
    font-size: var(--sidebar-fs-base); /* 14px */
}

/* Nav section footer variant */
.nav-section--footer {
    margin-top: auto;
    padding-top: 1rem; /* 16px */
    border-top: var(--border-width) solid var(--border-light);
}

/* App switch animation */
@keyframes appSwitchFade {
    0% { opacity: 0.5; }
    100% { opacity: 1; }
}

.sidebar-nav.switching {
    animation: appSwitchFade 0.3s ease;
}

/* ========================================
   MOBILE SIDEBAR
   ======================================== */

/* Overlay behind mobile sidebar */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: var(--bg-overlay, rgba(0, 0, 0, 0.5));
    z-index: 99;
    opacity: 0;
    transition: opacity var(--transition-speed) ease;
}

.sidebar-overlay.visible {
    display: block;
    opacity: 1;
}

/* Mobile menu toggle button (visible only on mobile) */
.mobile-menu-toggle {
    display: none;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: var(--radius-md);
    border: var(--border-width) solid var(--border);
    background: var(--bg-card);
    cursor: pointer;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.mobile-menu-toggle:hover {
    border-color: var(--border);
    box-shadow: var(--shadow-sm);
    color: var(--text-primary);
}

.mobile-menu-toggle svg {
    width: 1.25rem;
    height: 1.25rem;
}

@media (max-width: 768px) {
    /* Hide mobile menu toggle — replaced by bottom nav on mobile */
    .mobile-menu-toggle {
        display: none !important;
    }

    /* Hide desktop sidebar toggle */
    .sidebar-toggle {
        display: none;
    }

    /* Sidebar: off-screen by default, full-screen overlay on mobile */
    .sidebar {
        transform: translateX(-100%);
        width: 100%;
        max-width: 20rem; /* 320px — comfortable mobile width */
        z-index: 200;
    }

    /* Slide in when mobile-open */
    .sidebar.mobile-open {
        transform: translateX(0);
    }

    /* Main content: no left margin on mobile */
    .sidebar ~ .main,
    .sidebar.collapsed ~ .main {
        margin-left: 0;
    }

    /* Scrollable body: sidebar-header + app-switcher stay fixed,
       nav scrolls within the remaining viewport height */
    .sidebar.mobile-open .sidebar-nav {
        max-height: calc(100vh - var(--sidebar-mobile-header-offset, 10rem));
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    /* In mobile-open state, expand ALL app-switcher groups */
    .sidebar.mobile-open .app-switcher-group {
        /* Force open state via CSS — JS also adds .open class for semantics */
    }

    .sidebar.mobile-open .app-switcher-group .app-switcher-group-items {
        max-height: 25rem; /* same as .open state */
    }

    .sidebar.mobile-open .app-switcher-group .app-switcher-group-chevron {
        transform: rotate(180deg);
    }
}