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

:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --success-color: #4caf50;
    --danger-color: #f44336;
    --warning-color: #ff9800;
    --dark-bg: #1a1a1a;
    --light-bg: #f5f5f5;
    --text-primary: #333;
    --text-secondary: #666;
    --border-color: #ddd;
}

html, body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--light-bg);
    color: var(--text-primary);
}

.container {
    display: flex;
    height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 250px;
    background: white;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
    padding: 20px;
    overflow-y: auto;
    position: fixed;
    height: 100vh;
    left: 0;
    top: 0;
}

.logo h1 {
    font-size: 20px;
    color: var(--primary-color);
    margin-bottom: 30px;
}

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 40px;
}

.nav-item {
    display: block;
    padding: 12px 15px;
    text-decoration: none;
    color: var(--text-primary);
    border-radius: 5px;
    transition: all 0.3s;
}

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

.user-info {
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    font-size: 12px;
    color: var(--text-secondary);
}

.logout-btn {
    display: inline-block;
    margin-top: 10px;
    padding: 8px 12px;
    background: var(--danger-color);
    color: white;
    text-decoration: none;
    border-radius: 5px;
    font-size: 12px;
    transition: background 0.3s;
}

.logout-btn:hover {
    background: #d32f2f;
}

/* Main Content */
.main-content {
    margin-left: 250px;
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

/* Filter Panel */
.filter-panel {
    background: white;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 10;
}

.filters {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    align-items: flex-end;
}

.filter-group {
    display: flex;
    flex-direction: column;
}

.filter-group label {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 5px;
    font-weight: 500;
}

.filter-group input,
.filter-group select {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 13px;
    min-width: 120px;
}

.filter-group input:focus,
.filter-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 5px rgba(102, 126, 234, 0.3);
}

.filter-hint {
    display: block;
    font-size: 11px;
    color: var(--text-secondary);
    margin-top: 4px;
    font-style: italic;
}

.clear-select-btn {
    margin-top: 4px;
    padding: 3px 8px;
    font-size: 11px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
}

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

.filter-btn {
    padding: 8px 20px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    transition: background 0.3s;
}

.filter-btn:hover {
    background: var(--secondary-color);
}

.filter-btn.reset {
    background: var(--text-secondary);
}

.filter-btn.reset:hover {
    background: var(--text-primary);
}

/* Page Content */
.page-header {
    padding: 30px 30px 10px;
}

.page-header h2 {
    font-size: 28px;
    color: var(--text-primary);
}

/* KPI Cards */
.kpi-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    padding: 20px 30px;
}

.kpi-card {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    border-left: 4px solid var(--primary-color);
}

.kpi-label {
    font-size: 12px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 10px;
}

.kpi-value {
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-color);
}

.kpi-trend {
    font-size: 13px;
    margin-top: 8px;
}

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

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

/* Charts and Tables */
.chart-container {
    background: white;
    margin: 20px 30px;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.chart-container h3 {
    margin-bottom: 20px;
    color: var(--text-primary);
}

.group-by-selector {
    margin-bottom: 20px;
    display: flex;
    gap: 10px;
}

.group-btn {
    padding: 8px 16px;
    border: 1px solid var(--border-color);
    background: white;
    color: var(--text-primary);
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 12px;
}

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

/* Tables */
.table-container {
    overflow-x: auto;
    margin: 20px 30px;
}

.data-table {
    min-width: 100%;
    width: max-content;
    border-collapse: collapse;
    font-size: 13px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    table-layout: auto;
}

.data-table thead {
    background: var(--light-bg);
    border-bottom: 2px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 5;
}

.data-table th {
    padding: 12px;
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    user-select: none;
    white-space: nowrap;
}

.data-table th:hover {
    background: #eee;
}

.data-table td {
    padding: 12px;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}

.data-table tbody tr {
    transition: background-color 0.2s;
}

.data-table tbody tr:hover {
    background: var(--light-bg);
}

.data-table tbody tr:nth-child(even) {
    background: rgba(0, 0, 0, 0.02);
}

/* Numeric columns */
.data-table td.num {
    text-align: right;
    font-family: 'Courier New', monospace;
}

.data-table th.num {
    text-align: right;
}

/* Positive/Negative indicators */
.positive {
    color: var(--success-color);
    font-weight: 600;
}

.negative {
    color: var(--danger-color);
    font-weight: 600;
}

/* Status badges */
.badge {
    display: inline-block;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-align: center;
    white-space: nowrap;
}

.badge-critical {
    background: #ffcdd2;
    color: #c62828;
}

.badge-low {
    background: #fff3cd;
    color: #856404;
}

.badge-normal {
    background: #c8e6c9;
    color: #2e7d32;
}

.badge-excess {
    background: #bbdefb;
    color: #1565c0;
}

/* Summary Cards */
.summary-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
    padding: 20px 30px;
}

.summary-card {
    background: white;
    padding: 15px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.summary-card-label {
    font-size: 11px;
    color: var(--text-secondary);
    text-transform: uppercase;
    margin-bottom: 8px;
}

.summary-card-value {
    font-size: 20px;
    font-weight: bold;
    color: var(--primary-color);
}

/* CSV Download Button */
.csv-export-btn {
    padding: 8px 16px;
    background: var(--success-color);
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 500;
    transition: background 0.3s;
    text-decoration: none;
    display: inline-block;
}

.csv-export-btn:hover {
    background: #45a049;
}

/* Utility */
.mb-20 {
    margin-bottom: 20px;
}

.mt-20 {
    margin-top: 20px;
}

.text-center {
    text-align: center;
}

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

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    }

    .main-content {
        margin-left: 0;
    }

    .filters {
        flex-direction: column;
    }

    .filter-group {
        width: 100%;
    }

    .filter-group input,
    .filter-group select {
        width: 100%;
        min-width: unset;
    }

    .kpi-cards {
        grid-template-columns: 1fr 1fr;
    }

    .data-table {
        font-size: 11px;
    }

    .data-table th,
    .data-table td {
        padding: 8px;
    }

    .table-container {
        margin: 20px 15px;
        overflow-x: auto;
    }

    .chart-container {
        margin: 15px;
    }
}

@media (max-width: 480px) {
    .kpi-cards {
        grid-template-columns: 1fr;
    }

    .page-header {
        padding: 20px 15px 10px;
    }

    .chart-container {
        margin: 15px;
        padding: 15px;
    }

    .filter-btn {
        width: 100%;
    }
}

/* Группированная таблица остатков (раскрывающиеся строки по SKU) */
.table-toolbar {
    display: flex;
    align-items: center;
    gap: 15px;
    margin: 0 30px 10px;
    flex-wrap: wrap;
}

.table-hint {
    font-size: 12px;
    color: var(--text-secondary);
    font-style: italic;
}

.data-table th.sortable {
    position: relative;
    padding-right: 22px;
}

.data-table th.sortable::after {
    content: '';
    position: absolute;
    right: 8px;
    top: 50%;
    width: 0;
    height: 0;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 5px solid var(--border-color);
    transform: translateY(-2px);
}

.data-table th.sort-asc::after {
    border-top: none;
    border-bottom: 5px solid var(--primary-color);
    transform: translateY(2px);
}

.data-table th.sort-desc::after {
    border-top: 5px solid var(--primary-color);
    transform: translateY(-2px);
}

.sku-summary-row {
    cursor: pointer;
}

.sku-detail-row td {
    padding: 0;
    border-bottom: none;
    white-space: normal;
}

.detail-wrapper {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease;
    background: var(--light-bg);
}

.detail-table {
    width: max-content;
    min-width: 100%;
    border-collapse: collapse;
    font-size: 12px;
    margin: 4px 0 4px 40px;
}

.detail-table th {
    text-align: left;
    padding: 8px 12px;
    color: var(--text-secondary);
    font-weight: 500;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}

.detail-table td {
    padding: 8px 12px;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}

.detail-table th.num,
.detail-table td.num {
    text-align: right;
    font-family: 'Courier New', monospace;
}

.expand-toggle {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 5px 10px;
    cursor: pointer;
    font-size: 12px;
    color: var(--text-primary);
    white-space: nowrap;
}

.expand-toggle:hover {
    background: var(--light-bg);
}

.expand-icon {
    display: inline-block;
    width: 0;
    height: 0;
    border-top: 5px solid transparent;
    border-bottom: 5px solid transparent;
    border-left: 6px solid var(--text-secondary);
    transition: transform 0.25s ease;
    flex-shrink: 0;
}

.expand-toggle.expanded .expand-icon {
    transform: rotate(90deg);
}

/* Бейдж "новые поля БД" в навигации */
.schema-badge {
    display: inline-block;
    background: #f44336;
    color: white;
    border-radius: 10px;
    padding: 1px 7px;
    font-size: 11px;
    margin-left: 6px;
    vertical-align: middle;
}

.schema-badge[hidden] {
    display: none;
}

.schema-alert {
    color: #f44336;
    font-weight: 600;
}

.schema-ok {
    color: #4caf50;
    font-weight: 600;
}

/* Чекбокс "Группировать по SKU" на странице Остатков */
.checkbox-label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--text-primary);
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    cursor: pointer;
}

/* Уменьшенные графики дашборда + разворот в модальное окно */
.dashboard-charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
    margin: 20px 30px;
}

.chart-container--small {
    margin: 0;
}

.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.chart-header h3 {
    margin: 0;
    font-size: 13px;
}

.chart-canvas-wrapper {
    position: relative;
    height: 140px;
}

.expand-chart-btn {
    padding: 4px 10px;
    font-size: 11px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: white;
    color: var(--text-secondary);
    cursor: pointer;
    white-space: nowrap;
    flex-shrink: 0;
}

.expand-chart-btn:hover {
    background: var(--light-bg);
    color: var(--text-primary);
}

.chart-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 20px;
}

/* [hidden] и класс автора (.chart-modal-overlay { display:flex }) имеют
   одинаковую специфичность — без этого правила авторский display:flex
   всегда побеждает дефолтный [hidden]{display:none} браузера, и модалка
   не скрывается ни при загрузке страницы, ни по клику "Закрыть". */
.chart-modal-overlay[hidden] {
    display: none;
}

.chart-modal {
    background: white;
    border-radius: 10px;
    padding: 20px;
    width: min(900px, 100%);
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.chart-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

.chart-modal-header h3 {
    margin: 0;
    color: var(--text-primary);
}

.chart-modal-body {
    position: relative;
    flex: 1;
    min-height: 350px;
}

@media (max-width: 600px) {
    .chart-canvas-wrapper {
        height: 180px;
    }

    .chart-modal-body {
        min-height: 250px;
    }
}

/* Регулируемая ширина колонок — общая для всех таблиц (data-table, detail-table) */
.resizable-table th {
    overflow: hidden;
    text-overflow: ellipsis;
}

.resizable-table td {
    overflow: hidden;
    text-overflow: ellipsis;
}

.col-resize-handle {
    position: absolute;
    top: 0;
    right: 0;
    width: 8px;
    height: 100%;
    cursor: col-resize;
    user-select: none;
    touch-action: none;
    z-index: 3;
}

.col-resize-handle::after {
    content: '';
    position: absolute;
    top: 0;
    right: 3px;
    width: 2px;
    height: 100%;
    background: transparent;
}

.col-resize-handle:hover::after,
.col-resize-handle.resizing::after {
    background: var(--primary-color);
}


/* CRM portal navigation */
.crm-topbar {
    position: sticky;
    top: 0;
    z-index: 20;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    padding: 12px 30px;
    background: #ffffff;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 1px 6px rgba(0, 0, 0, 0.04);
}

.crm-topbar-link {
    display: inline-flex;
    align-items: center;
    min-height: 34px;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 13px;
    font-weight: 600;
    background: #ffffff;
    transition: border-color 0.2s, color 0.2s, background 0.2s;
}

.crm-topbar-link:hover,
.nav-item--portal:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
    background: #f7f8ff;
}

.crm-topbar-link--home,
.nav-item--portal {
    color: var(--primary-color);
    font-weight: 700;
}

.portal-header p {
    margin-top: 8px;
    color: var(--text-secondary);
    font-size: 15px;
}

.portal-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 18px;
    padding: 20px 30px 40px;
}

.portal-card {
    display: flex;
    min-height: 170px;
    flex-direction: column;
    justify-content: space-between;
    gap: 14px;
    padding: 22px;
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    color: var(--text-primary);
    text-decoration: none;
    transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
}

.portal-card:hover {
    transform: translateY(-2px);
    border-color: var(--primary-color);
    box-shadow: 0 8px 24px rgba(102, 126, 234, 0.14);
}

.portal-card--primary {
    border-left: 4px solid var(--primary-color);
}

.portal-card-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
}

.portal-card-description {
    flex: 1;
    color: var(--text-secondary);
    line-height: 1.45;
    font-size: 14px;
}

.portal-card-action {
    align-self: flex-start;
    padding: 8px 12px;
    border-radius: 6px;
    background: var(--primary-color);
    color: #ffffff;
    font-size: 13px;
    font-weight: 700;
}

@media (max-width: 768px) {
    .crm-topbar {
        padding: 12px 15px;
    }

    .portal-grid {
        padding: 15px;
    }
}

/* Published analytics navigation on narrow screens. */
@media (max-width: 768px) {
    .container { flex-direction: column; height: auto; min-height: 100vh; }
    .sidebar { flex-shrink: 0; padding: 15px; }
    .sidebar .logo h1 { margin-bottom: 12px; }
    .sidebar .nav-menu { flex-direction: row; overflow-x: auto; margin-bottom: 12px; gap: 4px; }
    .sidebar .nav-item { white-space: nowrap; padding: 10px; }
    .sidebar .user-info { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; padding-top: 8px; }
    .sidebar .logout-btn { margin-top: 0; }
    .main-content { min-width: 0; width: 100%; overflow: visible; }
    .dashboard-charts-grid { grid-template-columns: minmax(0, 1fr); }
}

.dashboard-tables-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; margin: 20px 30px; }
.dashboard-tables-grid > .chart-container { min-width: 0; overflow-x: auto; }
@media (max-width: 768px) {
    .dashboard-tables-grid { grid-template-columns: minmax(0, 1fr); margin: 15px; }
}