:root {
    /* Colors */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;

    --secondary: #64748b;

    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;

    --bg-body: #f1f5f9;
    --bg-surface: #ffffff;
    --bg-sidebar: #1e293b;

    --text-main: #0f172a;
    --text-muted: #64748b;
    --text-light: #94a3b8;
    --text-on-dark: #f8fafc;

    --border-color: #e2e8f0;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);

    /* Transitions */
    --transition-fast: 0.2s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--text-main);
    background-color: var(--bg-body);
    height: 100vh; /* Fallback */
    height: 100dvh;
    overflow: hidden;
}

/* Layout */
.app-container {
    display: flex;
    height: 100vh; /* Fallback */
    height: 100dvh;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background-color: var(--bg-sidebar);
    color: var(--text-on-dark);
    display: flex;
    flex-direction: column;
    transition: var(--transition-fast);
    z-index: 100;
}

.sidebar-header {
    height: 64px;
    display: flex;
    align-items: center;
    padding: 0 var(--spacing-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 700;
    font-size: 1.25rem;
    color: white;
}

.sidebar-nav {
    flex: 1;
    padding: var(--spacing-md) 0;
    overflow-y: auto;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--text-light);
    text-decoration: none;
    transition: var(--transition-fast);
    border-left: 3px solid transparent;
}

.nav-item:hover,
.nav-item.active {
    background-color: rgba(255, 255, 255, 0.05);
    color: white;
}

.nav-item.active {
    border-left-color: var(--primary);
    background-color: rgba(99, 102, 241, 0.1);
}

/* Sidebar Submenu */
.nav-group {
    display: flex;
    flex-direction: column;
}

.nav-group-toggle {
    justify-content: space-between;
    cursor: pointer;
}

.nav-group-toggle .toggle-icon {
    font-size: 0.8rem;
    transition: transform var(--transition-fast);
}

.nav-group.collapsed .toggle-icon {
    transform: rotate(-90deg);
}

.nav-group-children {
    overflow: hidden;
    background-color: rgba(0, 0, 0, 0.2);
}

.nav-group.collapsed .nav-group-children {
    display: none;
}

.nav-item.child-item {
    padding-left: 3.5rem;
    font-size: 0.9rem;
}

.sidebar-footer {
    padding: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.user-mini-profile {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
}

.user-info {
    display: flex;
    flex-direction: column;
}

.user-info .name {
    font-weight: 500;
    font-size: 0.9rem;
}

.user-info .role {
    font-size: 0.75rem;
    color: var(--text-light);
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
}

/* Top Header */
.top-header {
    height: 64px;
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-xl);
}

.header-search {
    display: flex;
    align-items: center;
    background-color: var(--bg-body);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 6px;
    width: 300px;
    color: var(--text-muted);
}

.header-search input {
    border: none;
    background: transparent;
    margin-left: var(--spacing-sm);
    outline: none;
    width: 100%;
    color: var(--text-main);
}

.header-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.icon-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
    position: relative;
    font-size: 1.1rem;
}

.icon-btn:hover {
    background-color: var(--bg-body);
    color: var(--primary);
}

.badge-dot {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 8px;
    height: 8px;
    background-color: var(--danger);
    border-radius: 50%;
    border: 2px solid var(--bg-surface);
}

/* Content Body */
.content-body {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-xl);
}

.view-section {
    display: none;
    animation: fadeIn 0.3s ease;
}

.view-section.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
}

.page-header h1 {
    font-size: 1.5rem;
    font-weight: 600;
}

/* Buttons */
.btn {
    padding: 0.6rem 1.2rem;
    border-radius: 6px;
    border: none;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: var(--transition-fast);
    font-family: inherit;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    background-color: var(--bg-surface);
    padding: var(--spacing-lg);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.stat-icon.primary {
    background-color: rgba(99, 102, 241, 0.1);
    color: var(--primary);
}

.stat-icon.success {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

.stat-icon.warning {
    background-color: rgba(245, 158, 11, 0.1);
    color: var(--warning);
}

.stat-icon.info {
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--info);
}

.stat-info {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.stat-info .label {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-xs);
}

.stat-info .value {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.stat-info .trend {
    font-size: 0.875rem;
    font-weight: 500;
}

.trend.up {
    color: var(--success);
}

.trend.down {
    color: var(--danger);
}

/* Charts Grid */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.chart-card {
    background-color: var(--bg-surface);
    padding: var(--spacing-lg);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
}

.chart-card h3 {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-lg);
    color: var(--text-muted);
}

/* Utilities */
.mobile-only {
    display: none;
}

/* Desktop Sidebar */
.desktop-only {
    display: flex;
}

@media (max-width: 768px) {
    .desktop-only {
        display: none;
    }
}

@media (min-width: 769px) {
    .sidebar.collapsed {
        width: 0;
        overflow: hidden;
    }
}

/* Inventory Back Button - Hidden by default (Desktop) */
.inventory-back-btn {
    display: none !important;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: -260px;
        height: 100%;
        box-shadow: var(--shadow-xl);
    }

    .sidebar.open {
        left: 0;
    }

    .sidebar-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0, 0, 0, 0.5);
        z-index: 90;
        display: none;
        backdrop-filter: blur(2px);
    }

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

    .mobile-only {
        display: flex;
    }

    .header-search {
        display: none;
    }

    .content-body {
        padding: var(--spacing-md);
    }
}

@media (max-width: 768px) {
    /* ... existing mobile styles ... */

    .form-actions {
        flex-direction: row;
    }

    .form-actions button {
        /* flex: 1 is already set inline in the component, but we can ensure it here */
        flex: 1 !important;
        width: auto;
    }

    .name-col {
        min-width: 100px;
        max-width: 350px;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .numeric-col {
        min-width: 50px;
        max-width: 60px;
        font-size: 0.8rem;
    }

    .data-table th,
    .data-table td {
        padding: 0.25rem 0.25rem !important;
        font-size: 0.8rem;
    }
}

/* Card & Table Styles */
.card {
    background-color: var(--bg-surface);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.card-body {
    flex: 1;
    overflow-y: auto;
}

.card-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.search-filter {
    position: relative;
    width: 300px;
}

.search-filter i {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.search-filter input {
    width: 100%;
    padding: 0.6rem 1rem 0.6rem 2.5rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    outline: none;
    font-family: inherit;
}

.search-filter input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.1);
}

.filters {
    display: flex;
    gap: var(--spacing-sm);
}

.form-select {
    padding: 0.6rem 2rem 0.6rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: white;
    font-family: inherit;
    cursor: pointer;
    outline: none;
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-main);
}

.btn-outline:hover {
    background-color: var(--bg-body);
    border-color: var(--text-muted);
}

.table-responsive {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    /*border-collapse: collapse;*/
    white-space: normal;
}

.data-table th,
.data-table td {
    /*padding: 0.5rem var(--spacing-lg) !important;*/
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    border-right: 1px solid var(--border-color);
}

.data-table th:last-child,
.data-table td:last-child {
    border-right: none;
}

.data-table th {
    background-color: #f8fafc;
    font-weight: 600;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.data-table th.sortable {
    cursor: pointer;
    user-select: none;
}

.data-table th.sortable:hover {
    background-color: #f1f5f9;
}

.data-table th i {
    font-size: 0.75rem;
    margin-left: 4px;
    opacity: 0.5;
}

.data-table tbody tr:hover {
    background-color: #f8fafc;
}

/* Badges */
.badge {
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
}

.badge.success {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

.badge.warning {
    background-color: rgba(245, 158, 11, 0.1);
    color: var(--warning);
}

.badge.danger {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}

/* Pagination */
.pagination-controls {
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.875rem;
}

.rows-per-page {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.rows-per-page select {
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0.2rem 0.5rem;
}

.page-nav {
    display: flex;
    gap: var(--spacing-xs);
}

.icon-btn.small {
    width: 32px;
    height: 32px;
    font-size: 0.875rem;
}

.icon-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* User Dropdown */
.user-dropdown-container {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    width: 150px;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    box-shadow: var(--shadow-lg);
    display: none;
    flex-direction: column;
    z-index: 1000;
    margin-top: var(--spacing-xs);
    overflow: hidden;
}

.dropdown-menu.show {
    display: flex;
    animation: fadeIn 0.2s ease;
}

.dropdown-item {
    padding: var(--spacing-md);
    color: var(--text-main);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition-fast);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.dropdown-item:hover {
    background-color: var(--bg-body);
}

.dropdown-item.text-danger {
    color: var(--danger);
}

.dropdown-item.text-danger:hover {
    background-color: rgba(239, 68, 68, 0.1);
}


/* Login Page */
.login-page {
    background-color: var(--bg-body);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: var(--spacing-lg);
}

.login-card {
    background-color: var(--bg-surface);
    padding: var(--spacing-xl);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
}

.login-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.login-header .logo {
    justify-content: center;
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
    font-size: 1.5rem;
}

.login-header p {
    color: var(--text-muted);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    font-size: 0.9rem;
}

.input-icon {
    position: relative;
}

.input-icon i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.input-icon input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    outline: none;
    font-family: inherit;
    transition: var(--transition-fast);
}

.input-icon input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.1);
}

.form-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    font-size: 0.875rem;
}

.checkbox-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    cursor: pointer;
    user-select: none;
}

.forgot-password {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

.forgot-password:hover {
    text-decoration: underline;
}

.btn-block {
    width: 100%;
    justify-content: center;
}

/* TreeView Styles */
.tree-toggle {
    cursor: pointer;
    margin-right: var(--spacing-sm);
    width: 16px;
    height: 16px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: white;
    background-color: var(--primary);
    border-radius: 50%;
    font-size: 10px;
    line-height: 1;
    position: relative;
    z-index: 2;
    border: 1px solid var(--primary);
}

.tree-toggle::before {
    content: '\f068';
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
}

.tree-toggle.collapsed {
    background-color: white;
    color: var(--primary);
}

.tree-toggle.collapsed::before {
    content: '\f067';
}

.tree-row-category {
    font-weight: 600;
    color: var(--primary);
}

/* Simple Indentation - Clear Parent-Child Hierarchy */
.indent-level-0 {
    padding-left: 12px;
}

.indent-level-1 {
    padding-left: 36px;
}

.indent-level-2 {
    padding-left: 60px;
}

.indent-level-3 {
    padding-left: 84px;
}

/* Categories Tree View Styles */
.categories-tree {
    font-family: inherit;
}

.category-tree-node {
    margin-bottom: var(--spacing-xs);
}

.category-tree-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 6px;
    transition: var(--transition-fast);
    cursor: pointer;
    position: relative;
}

.category-tree-item:hover {
    background-color: var(--bg-body);
}

.category-toggle {
    width: 20px;
    height: 20px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-muted);
    transition: transform 0.2s ease, color 0.2s ease;
    border-radius: 4px;
    flex-shrink: 0;
}

.category-toggle:hover {
    color: var(--primary);
    background-color: rgba(99, 102, 241, 0.1);
}

.category-toggle.collapsed {
    transform: rotate(0deg);
}

.category-toggle:not(.collapsed) {
    transform: rotate(90deg);
}

.category-toggle-spacer {
    width: 20px;
    display: inline-block;
    flex-shrink: 0;
}

.category-icon {
    color: var(--primary);
    font-size: 1.1rem;
    flex-shrink: 0;
}

.category-name {
    font-weight: 500;
    color: var(--text-main);
    flex: 1;
}

.category-item-count {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 400;
}

.category-children {
    margin-left: 0;
    margin-top: var(--spacing-xs);
}

/* Indentation for category tree - Clear hierarchy */
.category-indent-0 {
    padding-left: 0;
}

.category-indent-1 {
    padding-left: 24px;
    border-left: 2px solid var(--border-color);
    margin-left: 20px;
}

.category-indent-2 {
    padding-left: 24px;
    border-left: 2px solid var(--border-color);
    margin-left: 44px;
}

.category-indent-3 {
    padding-left: 24px;
    border-left: 2px solid var(--border-color);
    margin-left: 68px;
}

.category-indent-4 {
    padding-left: 24px;
    border-left: 2px solid var(--border-color);
    margin-left: 92px;
}

/* Visual connector lines for nested categories */
.category-indent-1 .category-tree-item::before {
    content: '';
    position: absolute;
    left: -24px;
    top: 50%;
    width: 20px;
    height: 2px;
    background-color: var(--border-color);
    transform: translateY(-50%);
}

.category-indent-2 .category-tree-item::before {
    content: '';
    position: absolute;
    left: -24px;
    top: 50%;
    width: 20px;
    height: 2px;
    background-color: var(--border-color);
    transform: translateY(-50%);
}

.category-indent-3 .category-tree-item::before {
    content: '';
    position: absolute;
    left: -24px;
    top: 50%;
    width: 20px;
    height: 2px;
    background-color: var(--border-color);
    transform: translateY(-50%);
}

/* Inventory Two-Column Layout */
.inventory-container {
    display: flex;
    gap: 0;
    height: calc(100vh - 200px);
    position: relative;
}

.inventory-treeview-panel {
    display: flex;
    flex-direction: column;
    min-width: 300px;
    max-width: 80%;
    width: 50%;
    flex-shrink: 0;
}

.inventory-form-panel {
    display: flex;
    flex-direction: column;
    min-width: 300px;
    flex: 1;
}

.inventory-form-panel .card {
    height: 100%;
}

/* Resizable Divider */
.inventory-resizer {
    width: 8px;
    background-color: var(--border-color);
    cursor: col-resize;
    position: relative;
    flex-shrink: 0;
    transition: background-color 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.inventory-resizer:hover {
    background-color: var(--primary);
}

.inventory-resizer.resizing {
    background-color: var(--primary);
}

.resizer-handle {
    width: 4px;
    height: 40px;
    background-color: var(--text-muted);
    border-radius: 2px;
    opacity: 0.5;
    transition: opacity 0.2s ease;
}

.inventory-resizer:hover .resizer-handle,
.inventory-resizer.resizing .resizer-handle {
    opacity: 1;
    background-color: white;
}

/* Inventory Treeview Styles */
.inventory-tree {
    font-family: inherit;
}

.inventory-tree-node {
    margin-bottom: var(--spacing-xs);
}

.inventory-tree-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 6px;
    transition: var(--transition-fast);
    position: relative;
}

.inventory-item-clickable {
    cursor: pointer;
}

.inventory-item-clickable:hover {
    background-color: var(--bg-body);
}

.inventory-item-node.selected .inventory-tree-item {
    background-color: rgba(99, 102, 241, 0.1);
    border-left: 3px solid var(--primary);
}

.inventory-category-node .inventory-tree-item {
    font-weight: 500;
}

.inventory-toggle {
    width: 20px;
    height: 20px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-muted);
    transition: transform 0.2s ease, color 0.2s ease;
    border-radius: 4px;
    flex-shrink: 0;
}

.inventory-toggle:hover {
    color: var(--primary);
    background-color: rgba(99, 102, 241, 0.1);
}

.inventory-toggle.collapsed {
    transform: rotate(0deg);
}

.inventory-toggle:not(.collapsed) {
    transform: rotate(-90deg);
}

.inventory-toggle-spacer {
    width: 20px;
    display: inline-block;
    flex-shrink: 0;
}

.inventory-icon {
    color: var(--primary);
    font-size: 1.1rem;
    flex-shrink: 0;
}

.inventory-icon.item-icon {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.inventory-name {
    font-weight: 500;
    color: var(--text-main);
    flex: 1;
}

.inventory-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.875rem;
}

.inventory-price {
    color: var(--text-muted);
    font-weight: 500;
}

.inventory-children {
    margin-left: 11px;
    margin-top: var(--spacing-xs);
    padding-left: 24px;
    border-left: 1px solid var(--border-color);
}

.inventory-children>.inventory-tree-node {
    position: relative;
}

.inventory-children>.inventory-tree-node::before {
    content: '';
    position: absolute;
    top: 20px;
    left: -24px;
    width: 24px;
    height: 1px;
    background-color: var(--border-color);
}

/* Indentation for inventory tree */
.inventory-indent-0 {
    padding-left: 0;
}

.inventory-indent-1 {
    padding-left: 24px;
    border-left: 2px solid var(--border-color);
    margin-left: 20px;
}

.inventory-indent-2 {
    padding-left: 24px;
    border-left: 2px solid var(--border-color);
    margin-left: 44px;
}

.inventory-indent-3 {
    padding-left: 24px;
    border-left: 2px solid var(--border-color);
    margin-left: 68px;
}

/* Visual connector lines for nested inventory items */
.inventory-indent-1 .inventory-tree-item::before {
    content: '';
    position: absolute;
    left: -24px;
    top: 50%;
    width: 20px;
    height: 2px;
    background-color: var(--border-color);
    transform: translateY(-50%);
}

.inventory-indent-2 .inventory-tree-item::before {
    content: '';
    position: absolute;
    left: -24px;
    top: 50%;
    width: 20px;
    height: 2px;
    background-color: var(--border-color);
    transform: translateY(-50%);
}

.inventory-indent-3 .inventory-tree-item::before {
    content: '';
    position: absolute;
    left: -24px;
    top: 50%;
    width: 20px;
    height: 2px;
    background-color: var(--border-color);
    transform: translateY(-50%);
}

/* Form Styles */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--text-main);
}

.form-input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-family: inherit;
    font-size: 0.9rem;
    transition: var(--transition-fast);
    outline: none;
}

.form-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.1);
}

.form-input:read-only {
    background-color: var(--bg-body);
    cursor: not-allowed;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

/* Responsive adjustments */
@media (max-width: 1024px) {
    .inventory-container {
        flex-direction: column;
        height: auto;
    }

    .inventory-treeview-panel {
        width: 100% !important;
        max-width: 100%;
    }

    /* Mobile View Switching */
    .inventory-container .inventory-treeview-panel {
        display: flex;
    }

    .inventory-container .inventory-form-panel {
        display: none;
    }

    /* When form is active (show-form class added to container) */
    .inventory-container.show-form .inventory-treeview-panel {
        display: none;
    }

    .inventory-container.show-form .inventory-form-panel {
        display: flex;
        margin-top: 0;
    }

    .inventory-resizer {
        display: none;
    }

    /* Show back button when in mobile/tablet layout */
    .inventory-back-btn {
        display: inline-flex !important;
    }
}

/* Blazor Error UI & Loading Styles */
#blazor-error-ui {
    background: lightyellow;
    bottom: 0;
    box-shadow: 0 -1px 2px rgba(0, 0, 0, 0.2);
    display: none;
    left: 0;
    padding: 0.6rem 1.25rem 0.7rem 1.25rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
}

#blazor-error-ui .dismiss {
    cursor: pointer;
    position: absolute;
    right: 0.75rem;
    top: 0.5rem;
}

.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,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) no-repeat 1rem/1.8rem, #b32121;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
}

.blazor-error-boundary::after {
    content: "An error has occurred."
}

.loading-progress {
    position: relative;
    display: block;
    width: 8rem;
    height: 8rem;
    margin: 20vh auto 1rem auto;
}

.loading-progress circle {
    fill: none;
    stroke: #e0e0e0;
    stroke-width: 0.6rem;
    transform-origin: 50% 50%;
    transform: rotate(-90deg);
}

.loading-progress circle:last-child {
    stroke: #1b6ec2;
    stroke-dasharray: calc(3.141 * var(--blazor-load-percentage, 0%) * 0.8), 500%;
    transition: stroke-dasharray 0.05s ease-in-out;
}

.loading-progress-text {
    position: absolute;
    text-align: center;
    font-weight: bold;
    inset: calc(20vh + 3.25rem) 0 auto 0.2rem;
}

.loading-progress-text:after {
    content: var(--blazor-load-percentage-text, "Loading");
}

/* Loading Spinner Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.7);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(2px);
}

.spinner {
    width: 50px;
    height: 50px;
    border: 5px solid var(--border-color);
    border-top: 5px solid var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

/* Blazored Toast Customization: Close on click and hide close button */
.blazored-toast {
    position: relative !important;
    cursor: pointer;
}

.blazored-toast-close-icon {
    display: block !important;
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    width: 100% !important;
    height: 100% !important;
    margin: 0 !important;
    padding: 0 !important;

    z-index: 9999 !important;
    /* Increased z-index significantly */
    background-color: transparent !important;
    border: none !important;
    outline: none !important;
    cursor: pointer !important;
    min-width: 100% !important;
    /* Ensure min-width doesn't restrict it */
    min-height: 100% !important;
}

/* Ensure content doesn't block clicks if somehow above */
.blazored-toast-content {
    pointer-events: none;
    /* Let clicks pass through to the button/container if button is below, though button should be above */
    position: relative;
    z-index: 1;
}

/* Blazor Startup Loading Styles */
.loading-overlay-startup {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background-color: var(--bg-body);
    z-index: 10000;
}

.spinner-startup {
    width: 60px;
    height: 60px;
    border: 6px solid var(--border-color);
    border-top: 6px solid var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

.loading-text-startup {
    font-family: 'Inter', sans-serif;
    color: var(--text-muted);
    font-weight: 500;
    font-size: 1.1rem;
}

/* Global MudDataGrid Styles */
.custom-header {
    background-color: #6366f1;
    color: white;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 2px solid #4f46e5 !important;
    padding: 5px !important;
}

.mud-table-root .mud-table-head .mud-table-cell {
    color: #424242;
    font-weight: 700;
    border-right: 1px solid #e0e0e0 !important;
}

/* Force borders on all cells */
.mud-table-root .mud-table-body .mud-table-cell {
    border-right: 1px solid #e0e0e0 !important;
    border-bottom: 1px solid #e0e0e0 !important;
    padding: 5px !important;
}

/* Remove right border from the last cell to avoid double border with container */
.mud-table-root .mud-table-head .mud-table-cell:last-child,
.mud-table-root .mud-table-body .mud-table-cell:last-child {
    border-right: none !important;
}

/* Data Table Syles */
.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th,
.data-table td {
    padding: 0.5rem var(--spacing-lg) !important;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    border-right: 1px solid var(--border-color);
}

.data-table th:last-child,
.data-table td:last-child {
    border-right: none;
}

.data-table th {
    font-weight: 600;
}

/* Utilities restored from Index.razor */
.light-grey-bg {
    background-color: #e0e0e0 !important;
    /* Light Grey */
    color: #424242 !important;
    /* Dark Grey Text */
}

.text-right {
    text-align: right !important;
}

/* Footer */
.app-footer {
    background-color: #f0f0f0;
    border-top: 1px solid var(--border-color);
    padding: 0.75rem var(--spacing-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.app-footer .footer-left {
    display: flex;
    align-items: center;
    gap: 4px;
}

.app-footer .highlight {
    color: var(--primary);
    font-weight: 500;
}

.footer-spacer {
    height: 60px; /* Buffer for mobile scrolling */
}

@media (max-width: 768px) {
    .app-footer {
        padding: 0.75rem var(--spacing-md);
        flex-direction: row;
        justify-content: space-between;
        gap: 8px;
    }
}