/* ============================================
   VisitorAnalytics 1.0 - Analytics Core
   Page layout, filters, stat cards, chart cards,
   multi-select, loading/empty states, export
   ============================================ */

/* ============ Analytics Page Layout ============ */
.analytics-page {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* ============ Filters Section ============ */
.analytics-filters {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    gap: 1rem;
    padding: 1rem 1.25rem;
    background-color: var(--va-card);
    border-radius: 0.75rem;
}

.analytics-filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
    min-width: 180px;
}

.analytics-filter-group.flex-1 {
    flex: 1;
    min-width: 250px;
}

.analytics-filter-label {
    font-size: 0.75rem;
    font-weight: 500;
    color: #9ca3af;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.analytics-filter-actions {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    margin-left: auto;
}

.light .analytics-filters {
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.light .analytics-filter-label {
    color: #6b7280;
}

/* ============ Stats Grid ============ */
.analytics-stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}

@media (max-width: 1280px) {
    .analytics-stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .analytics-stats-grid {
        grid-template-columns: 1fr;
    }
}

/* ============ Stat Card ============ */
.analytics-stat-card {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    padding: 1.25rem;
    background-color: var(--va-card);
    border-radius: 0.75rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: transform var(--va-transition), box-shadow var(--va-transition);
}

.analytics-stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px -5px rgba(0, 0, 0, 0.3);
}

.analytics-stat-content {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.analytics-stat-label {
    font-size: 0.75rem;
    font-weight: 500;
    color: #9ca3af;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.analytics-stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: white;
    line-height: 1.2;
}

.analytics-stat-value span {
    font-size: 1rem;
    font-weight: 500;
    color: #9ca3af;
    margin-left: 0.25rem;
}

.analytics-stat-change {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.75rem;
    font-weight: 500;
    margin-top: 0.25rem;
}

.analytics-stat-change.positive {
    color: var(--va-success);
}

.analytics-stat-change.negative {
    color: var(--va-danger);
}

.analytics-stat-sublabel {
    font-size: 0.6875rem;
    color: #6b7280;
}

.analytics-stat-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.75rem;
    height: 2.75rem;
    border-radius: 0.625rem;
    flex-shrink: 0;
}

.analytics-stat-icon .ti {
    font-size: 1.375rem;
}

.analytics-stat-icon.primary {
    background-color: rgba(78, 205, 196, 0.15);
    color: var(--va-accent);
}

.analytics-stat-icon.success {
    background-color: rgba(61, 214, 140, 0.15);
    color: var(--va-success);
}

.analytics-stat-icon.warning {
    background-color: rgba(255, 204, 0, 0.15);
    color: var(--va-warning);
}

.analytics-stat-icon.info {
    background-color: rgba(59, 130, 246, 0.15);
    color: #3b82f6;
}

.analytics-stat-icon.purple {
    background-color: rgba(139, 92, 246, 0.15);
    color: #8b5cf6;
}

.light .analytics-stat-card {
    border-color: rgba(0, 0, 0, 0.05);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.light .analytics-stat-card:hover {
    box-shadow: 0 8px 25px -5px rgba(0, 0, 0, 0.15);
}

.light .analytics-stat-value {
    color: #1f2937;
}

.light .analytics-stat-label {
    color: #6b7280;
}

/* ============ Charts Grid ============ */
.analytics-charts-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.analytics-charts-grid.cols-3 {
    grid-template-columns: repeat(3, 1fr);
}

.analytics-charts-grid.cols-1 {
    grid-template-columns: 1fr;
}

@media (max-width: 1024px) {
    .analytics-charts-grid,
    .analytics-charts-grid.cols-3 {
        grid-template-columns: 1fr;
    }
}

/* ============ Chart Card ============ */
.analytics-chart-card {
    background-color: var(--va-card);
    border-radius: 0.75rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
    overflow: hidden;
}

.analytics-chart-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.analytics-chart-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9375rem;
    font-weight: 600;
    color: white;
}

.analytics-chart-title .ti {
    font-size: 1.25rem;
    color: var(--va-accent);
}

.analytics-chart-body {
    padding: 1.25rem;
}

.analytics-chart-container {
    position: relative;
    height: 280px;
}

.analytics-chart-container.tall {
    min-height: 350px;
    height: auto;
}

.analytics-chart-container.extra-tall,
.chart-container-lg {
    height: 400px;
}

.analytics-chart-container.short {
    height: 200px;
}

.light .analytics-chart-card {
    border-color: rgba(0, 0, 0, 0.05);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.light .analytics-chart-header {
    border-bottom-color: rgba(0, 0, 0, 0.05);
}

.light .analytics-chart-title {
    color: #1f2937;
}

/* ============ Period Comparison ============ */
.period-comparison {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: 0.5rem;
}

.period-comparison-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.period-box {
    display: flex;
    flex-direction: column;
    padding: 1rem;
    background-color: rgba(255, 255, 255, 0.03);
    border-radius: 0.5rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.period-label {
    font-size: 0.6875rem;
    font-weight: 500;
    color: #9ca3af;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.period-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: white;
    margin-top: 0.25rem;
}

.period-value.text-success {
    color: var(--va-success);
}

.period-sublabel {
    font-size: 0.75rem;
    color: #6b7280;
    margin-top: 0.125rem;
}

.period-change {
    font-size: 0.75rem;
    font-weight: 500;
    margin-top: 0.375rem;
}

.period-change.positive { color: var(--va-success); }
.period-change.negative { color: var(--va-danger); }

.light .period-box {
    background-color: rgba(0, 0, 0, 0.02);
    border-color: rgba(0, 0, 0, 0.05);
}

.light .period-value {
    color: #1f2937;
}

/* ============ Trend Comparison ============ */
.analytics-trend-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}

.analytics-trend-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 1rem;
    background-color: rgba(255, 255, 255, 0.03);
    border-radius: 0.5rem;
}

.analytics-trend-label {
    font-size: 0.6875rem;
    font-weight: 500;
    color: #6b7280;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.analytics-trend-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    margin-top: 0.25rem;
}

.analytics-trend-change {
    font-size: 0.75rem;
    font-weight: 500;
    margin-top: 0.25rem;
}

.analytics-trend-change.positive { color: var(--va-success); }
.analytics-trend-change.negative { color: var(--va-danger); }

.light .analytics-trend-item {
    background-color: rgba(0, 0, 0, 0.02);
}

.light .analytics-trend-value {
    color: #1f2937;
}

@media (max-width: 768px) {
    .analytics-trend-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ============ Data Table (base) ============ */
.analytics-table-container {
    overflow-x: auto;
}

.analytics-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.analytics-table th {
    padding: 0.75rem 1rem;
    text-align: left;
    font-size: 0.6875rem;
    font-weight: 600;
    color: #9ca3af;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background-color: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.analytics-table td {
    padding: 0.75rem 1rem;
    color: #e5e7eb;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.analytics-table tbody tr:hover {
    background-color: rgba(255, 255, 255, 0.02);
}

.light .analytics-table th {
    color: #6b7280;
    background-color: rgba(0, 0, 0, 0.02);
    border-bottom-color: rgba(0, 0, 0, 0.05);
}

.light .analytics-table td {
    color: #374151;
    border-bottom-color: rgba(0, 0, 0, 0.03);
}

.light .analytics-table tbody tr:hover {
    background-color: rgba(0, 0, 0, 0.01);
}

/* ============ Loading State ============ */
.analytics-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 3rem;
    color: #9ca3af;
}

.analytics-loading .spinner {
    width: 2.5rem;
    height: 2.5rem;
    border: 3px solid rgba(78, 205, 196, 0.2);
    border-top-color: var(--va-accent);
    border-radius: 50%;
    animation: va-spin 0.8s linear infinite;
}

@keyframes va-spin {
    to { transform: rotate(360deg); }
}

/* ============ Empty State ============ */
.analytics-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 3rem;
    text-align: center;
}

.analytics-empty .ti {
    font-size: 3rem;
    color: #4b5563;
}

.analytics-empty-title {
    font-size: 1rem;
    font-weight: 600;
    color: #9ca3af;
}

.analytics-empty-text {
    font-size: 0.875rem;
    color: #6b7280;
}

.empty-state {
    text-align: center;
    padding: 3rem;
    color: #9ca3af;
}

.empty-state .empty-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
    display: block;
}

.empty-state .empty-text {
    font-size: 1rem;
    margin: 0;
}

.empty-state-small {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    color: #9ca3af;
    gap: 0.5rem;
}

.empty-state-small .ti {
    font-size: 2rem;
    opacity: 0.5;
}

/* ============ Export Buttons ============ */
.analytics-export-buttons {
    display: flex;
    gap: 0.5rem;
}

.analytics-export-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.5rem 0.875rem;
    font-size: 0.8125rem;
    font-weight: 500;
    color: #9ca3af;
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 0.375rem;
    cursor: pointer;
    transition: all var(--va-transition);
}

.analytics-export-btn:hover:not(:disabled) {
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    border-color: rgba(255, 255, 255, 0.2);
}

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

.analytics-export-btn .ti {
    font-size: 1.125rem;
}

.light .analytics-export-btn {
    color: #6b7280;
    background-color: rgba(0, 0, 0, 0.03);
    border-color: rgba(0, 0, 0, 0.1);
}

.light .analytics-export-btn:hover:not(:disabled) {
    background-color: rgba(0, 0, 0, 0.06);
    color: #1f2937;
    border-color: rgba(0, 0, 0, 0.15);
}

/* ============ Multi-Select Pillbox ============ */
.analytics-multiselect {
    position: relative;
    width: 100%;
}

.analytics-multiselect-trigger {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.375rem;
    min-height: 2.75rem;
    padding: 0.375rem 0.75rem;
    padding-right: 2.5rem;
    background-color: var(--va-bg);
    border: 1px solid var(--va-border);
    border-radius: 0.5rem;
    cursor: pointer;
    transition: border-color var(--va-transition);
}

.analytics-multiselect-trigger:hover {
    border-color: rgba(255, 255, 255, 0.3);
}

.analytics-multiselect-trigger.open {
    border-color: var(--va-accent);
    box-shadow: 0 0 0 2px rgba(78, 205, 196, 0.2);
}

.analytics-multiselect-placeholder {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.4);
}

.analytics-multiselect-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 500;
    color: white;
    background-color: var(--va-accent);
    border-radius: 9999px;
}

.analytics-multiselect-pill-remove {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1rem;
    height: 1rem;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    line-height: 1;
}

.analytics-multiselect-pill-remove:hover {
    color: white;
}

.analytics-multiselect-arrow {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.25rem;
    color: #9ca3af;
    pointer-events: none;
    transition: transform var(--va-transition);
}

.analytics-multiselect-trigger.open .analytics-multiselect-arrow {
    transform: translateY(-50%) rotate(180deg);
}

.analytics-multiselect-dropdown {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    right: 0;
    z-index: 50;
    background-color: var(--va-card);
    border: 1px solid var(--va-border);
    border-radius: 0.5rem;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.4);
    overflow: hidden;
}

.analytics-multiselect-actions {
    display: flex;
    gap: 0.5rem;
    padding: 0.5rem;
    border-bottom: 1px solid var(--va-border);
}

.analytics-multiselect-action {
    flex: 1;
    padding: 0.375rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 500;
    color: #9ca3af;
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 0.375rem;
    cursor: pointer;
    transition: all var(--va-transition);
}

.analytics-multiselect-action:hover {
    background-color: rgba(78, 205, 196, 0.1);
    border-color: rgba(78, 205, 196, 0.3);
    color: var(--va-accent);
}

.analytics-multiselect-options {
    max-height: 240px;
    overflow-y: auto;
    padding: 0.25rem;
}

.analytics-multiselect-option {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    color: #e5e7eb;
    cursor: pointer;
    border-radius: 0.375rem;
    transition: background-color var(--va-transition);
}

.analytics-multiselect-option:hover {
    background-color: rgba(255, 255, 255, 0.05);
}

.analytics-multiselect-option.selected {
    background-color: rgba(78, 205, 196, 0.1);
    color: white;
}

.analytics-multiselect-checkbox {
    width: 1rem;
    height: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 0.25rem;
    color: transparent;
    font-size: 0.75rem;
    transition: all var(--va-transition);
}

.analytics-multiselect-option.selected .analytics-multiselect-checkbox {
    background-color: var(--va-accent);
    border-color: var(--va-accent);
    color: white;
}

.analytics-multiselect-backdrop {
    position: fixed;
    inset: 0;
    z-index: 40;
}

.light .analytics-multiselect-trigger {
    background-color: white;
    border-color: #d1d5db;
}

.light .analytics-multiselect-trigger:hover {
    border-color: #9ca3af;
}

.light .analytics-multiselect-placeholder {
    color: #9ca3af;
}

.light .analytics-multiselect-dropdown {
    background-color: white;
    border-color: #e5e7eb;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1);
}

.light .analytics-multiselect-actions {
    border-bottom-color: #e5e7eb;
}

.light .analytics-multiselect-action {
    color: #6b7280;
    background-color: rgba(0, 0, 0, 0.03);
    border-color: rgba(0, 0, 0, 0.1);
}

.light .analytics-multiselect-option {
    color: #374151;
}

.light .analytics-multiselect-option:hover {
    background-color: rgba(0, 0, 0, 0.03);
}

.light .analytics-multiselect-checkbox {
    border-color: #d1d5db;
}

/* ============ Responsive Filter Layout ============ */
@media (max-width: 768px) {
    .analytics-filters {
        flex-direction: column;
        align-items: stretch;
    }

    .analytics-filter-group {
        width: 100%;
    }

    .analytics-filter-actions {
        margin-left: 0;
        justify-content: flex-end;
    }
}

/* ============ Filter Info Badge ============ */
.analytics-filter-info {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(78, 205, 196, 0.1);
    border: 1px solid rgba(78, 205, 196, 0.3);
    border-radius: 0.5rem;
    color: var(--va-accent);
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.analytics-filter-info .ti {
    font-size: 1.125rem;
}

.light .analytics-filter-info {
    background: rgba(78, 205, 196, 0.05);
}

/* ============ Analytics Page Header ============ */
.analytics-page-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

/* ============ Source Badge (WiFi / Radar / Fusion) ============ */
.analytics-source-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.75rem;
    border-radius: 2rem;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    white-space: nowrap;
}
.analytics-source-badge .ti { font-size: 0.875rem; }
.analytics-source-badge.wifi {
    background: rgba(59, 130, 246, 0.15);
    color: #3B82F6;
    border: 1px solid rgba(59, 130, 246, 0.3);
}
.analytics-source-badge.radar {
    background: rgba(255, 204, 0, 0.15);
    color: #FFCC00;
    border: 1px solid rgba(255, 204, 0, 0.3);
}
.analytics-source-badge.fusion {
    background: rgba(139, 92, 246, 0.15);
    color: #8B5CF6;
    border: 1px solid rgba(139, 92, 246, 0.3);
}

.analytics-page-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 600;
    color: white;
    margin: 0;
}

.analytics-page-title .ti {
    font-size: 1.75rem;
    color: var(--va-accent);
}

.analytics-page-subtitle {
    color: #9ca3af;
    margin: 0.25rem 0 0 2.25rem;
    font-size: 0.875rem;
}

.light .analytics-page-title {
    color: #1f2937;
}

.light .analytics-page-subtitle {
    color: #6b7280;
}

/* ============ Progress Bars (shared) ============ */
.progress-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.progress-bar-mini {
    flex: 1;
    max-width: 80px;
    background: rgba(255, 255, 255, 0.1);
    height: 8px;
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    transition: width 0.3s ease;
}

.progress-bar-fill.bg-success {
    background: var(--va-success);
}

.progress-text {
    font-size: 0.75rem;
    color: #9ca3af;
    min-width: 40px;
}

.light .progress-bar-mini {
    background: rgba(0, 0, 0, 0.1);
}

.light .progress-text {
    color: #6b7280;
}

.progress-container {
    flex: 1;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    height: 8px;
    overflow: hidden;
}

.progress-container.small {
    width: 80px;
    height: 6px;
}

.progress-fill {
    height: 100%;
    border-radius: 4px;
    transition: width 0.3s ease;
    background: var(--va-accent);
}

.progress-fill.success { background: var(--va-success); }
.progress-fill.danger  { background: #EF4444; }
.progress-fill.warning { background: #F59E0B; }

.light .progress-container {
    background: rgba(0, 0, 0, 0.1);
}

/* ============ Spinner ============ */
.spinner-small {
    display: inline-block;
    width: 14px;
    height: 14px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: va-spin 0.8s linear infinite;
    margin-right: 0.5rem;
}

/* ============ AI Insights ============ */
.ai-insight-content {
    padding: 0.5rem;
}

.ai-insight-text {
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--va-text);
}

.ai-insight-text strong {
    color: var(--va-accent);
}

.ai-conversation {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-height: 600px;
    overflow-y: auto;
    padding-right: 0.5rem;
}

.ai-message {
    display: flex;
    gap: 0.75rem;
    align-items: flex-start;
}

.ai-message-avatar {
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    background: rgba(255, 255, 255, 0.05);
    color: var(--va-text-dim);
    font-size: 1rem;
}

.ai-message-avatar.ai-avatar {
    background: rgba(78, 205, 196, 0.15);
    color: var(--va-accent);
}

.ai-message-body {
    flex: 1;
    min-width: 0;
}

.ai-message-user .ai-message-body {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 0.5rem;
    padding: 0.75rem 1rem;
}

.ai-message-ai .ai-message-body {
    background: rgba(78, 205, 196, 0.05);
    border: 1px solid rgba(78, 205, 196, 0.1);
    border-radius: 0.5rem;
    padding: 0.75rem 1rem;
}

.ai-message-text {
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--va-text);
}

.ai-message-text strong {
    color: var(--va-accent);
}

.ai-suggestion-btn {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
    font-size: 0.8125rem;
    color: var(--va-text-dim);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--va-border);
    border-radius: 9999px;
    cursor: pointer;
    transition: all var(--va-transition);
}

.ai-suggestion-btn:hover:not(:disabled) {
    background: rgba(78, 205, 196, 0.1);
    border-color: rgba(78, 205, 196, 0.3);
    color: var(--va-accent);
}

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

.light .ai-message-user .ai-message-body {
    background: rgba(0, 0, 0, 0.02);
}

.light .ai-message-ai .ai-message-body {
    background: rgba(78, 205, 196, 0.03);
    border-color: rgba(78, 205, 196, 0.08);
}

.light .ai-suggestion-btn {
    background: rgba(0, 0, 0, 0.02);
}

/* ============ Analytics Tabs ============ */
.analytics-tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    padding-bottom: 0;
}

.analytics-tab {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 18px;
    background: transparent;
    border: none;
    color: var(--va-text-dim);
    font-size: 0.875rem;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all var(--va-transition);
}

.analytics-tab:hover { color: var(--va-text); }

.analytics-tab.active {
    color: var(--va-accent);
    border-bottom-color: var(--va-accent);
}

.analytics-tab .ti { font-size: 1.125rem; }

.light .analytics-tabs { border-bottom-color: rgba(0, 0, 0, 0.06); }

/* ============ Sensor Health Grid ============ */
.sensor-health-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.sensor-card {
    flex-direction: column;
    align-items: stretch;
    padding: 20px;
}

.sensor-card-title {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--va-text);
    margin: 0 0 14px 0;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.sensor-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 5px 0;
}

.sensor-label { font-size: 0.8125rem; color: var(--va-text-dim); }
.sensor-value {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--va-text);
    display: flex;
    align-items: center;
    gap: 4px;
}

.text-success { color: var(--va-success); }
.text-warning { color: var(--va-warning); }
.text-danger  { color: var(--va-danger, #ef4444); }

@media (max-width: 1024px) {
    .sensor-health-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
    .sensor-health-grid { grid-template-columns: 1fr; }
}

/* ============ Analytics Preview Cards ============ */
.analytics-preview-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-top: 1.5rem;
}

.analytics-preview-card {
    background: var(--va-card);
    border: 1px solid var(--va-border);
    border-radius: 0.75rem;
    padding: 1.5rem;
    text-align: center;
}

.analytics-preview-icon {
    width: 3rem;
    height: 3rem;
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 1.5rem;
}

.analytics-preview-icon.primary { background: rgba(78, 205, 196, 0.15); color: var(--va-accent); }
.analytics-preview-icon.info    { background: rgba(59, 130, 246, 0.15); color: var(--va-info); }
.analytics-preview-icon.warning { background: rgba(245, 158, 11, 0.15); color: var(--va-warning); }
.analytics-preview-icon.purple  { background: rgba(139, 92, 246, 0.15); color: #8b5cf6; }

.analytics-preview-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--va-text);
    margin-bottom: 0.25rem;
}

.analytics-preview-text {
    font-size: 0.8125rem;
    color: var(--va-text-muted);
}

@media (max-width: 768px) {
    .analytics-preview-grid { grid-template-columns: 1fr; }
}

/* ============ Confidence Bar ============ */
.confidence-bar {
    position: relative;
    width: 60px;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    display: inline-block;
}

.confidence-fill {
    height: 100%;
    border-radius: 3px;
    background: var(--va-success);
}

.confidence-text {
    font-size: 0.75rem;
    color: var(--va-text-dim);
    margin-left: 0.5rem;
}

/* ============ Dwell Segment Bars ============ */
.dwell-segments {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    padding: 0.5rem 0;
}

.dwell-segment-row {
    display: grid;
    grid-template-columns: 80px 1fr 60px 50px;
    align-items: center;
    gap: 0.75rem;
}

.dwell-segment-label {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--va-text);
    white-space: nowrap;
}

.dwell-segment-bar-wrapper {
    height: 24px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
    overflow: hidden;
}

.dwell-segment-bar {
    height: 100%;
    border-radius: 4px;
    transition: width 0.5s ease;
    min-width: 2px;
}

.dwell-segment-count {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--va-text);
    text-align: right;
}

.dwell-segment-pct {
    font-size: 0.75rem;
    color: var(--va-text-dim);
    text-align: right;
}

.light .dwell-segment-bar-wrapper {
    background: rgba(0, 0, 0, 0.05);
}

/* ============ Dwell Badge ============ */
.dwell-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.5rem;
    border-radius: 0.375rem;
    font-size: 0.75rem;
    font-weight: 500;
}
.dwell-badge.badge-primary { background-color: rgba(255, 109, 65, 0.2); color: #FF6D41; }
.dwell-badge.badge-info    { background-color: rgba(59, 130, 246, 0.2); color: #3B82F6; }
.dwell-badge.badge-success { background-color: rgba(61, 214, 140, 0.2); color: #3DD68C; }
.dwell-badge.badge-warning { background-color: rgba(255, 204, 0, 0.2);  color: #FFCC00; }

/* ============ Route Pills ============ */
.route-pills {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.375rem;
}
.route-pill {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.625rem;
    border-radius: 2rem;
    font-size: 0.75rem;
    font-weight: 500;
    white-space: nowrap;
    line-height: 1.4;
}
.route-arrow {
    font-size: 0.875rem;
    color: var(--va-text-muted);
    flex-shrink: 0;
}
.route-color-0 { background: rgba(255, 109, 65, 0.15); color: #FF6D41; border: 1px solid rgba(255, 109, 65, 0.3); }
.route-color-1 { background: rgba(59, 130, 246, 0.15); color: #3B82F6; border: 1px solid rgba(59, 130, 246, 0.3); }
.route-color-2 { background: rgba(61, 214, 140, 0.15); color: #3DD68C; border: 1px solid rgba(61, 214, 140, 0.3); }
.route-color-3 { background: rgba(139, 92, 246, 0.15); color: #8B5CF6; border: 1px solid rgba(139, 92, 246, 0.3); }
.route-color-4 { background: rgba(255, 204, 0, 0.15); color: #FFCC00; border: 1px solid rgba(255, 204, 0, 0.3); }
.route-color-5 { background: rgba(236, 72, 153, 0.15); color: #EC4899; border: 1px solid rgba(236, 72, 153, 0.3); }
.route-color-6 { background: rgba(20, 184, 166, 0.15); color: #14B8A6; border: 1px solid rgba(20, 184, 166, 0.3); }
.route-color-7 { background: rgba(251, 146, 60, 0.15); color: #FB923C; border: 1px solid rgba(251, 146, 60, 0.3); }

/* ============ AI Chat (WhatsApp style) ============ */
.ai-chat-card {
    display: flex;
    flex-direction: column;
    max-height: 700px;
}

.ai-chat-card .analytics-chart-body { display: none; } /* hide default body */

.ai-chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    min-height: 300px;
    max-height: 500px;
}

.ai-chat-welcome {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem 0;
    text-align: center;
}

.ai-suggestions-wrap {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
    max-width: 600px;
}

/* Message rows */
.ai-msg { display: flex; gap: 0.5rem; }

.ai-msg-user {
    justify-content: flex-end;
}

.ai-msg-ai {
    justify-content: flex-start;
}

.ai-msg-icon {
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    background: rgba(78, 205, 196, 0.15);
    color: var(--va-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 1rem;
    margin-top: 2px;
}

/* Bubbles */
.ai-msg-bubble {
    max-width: 75%;
    padding: 0.75rem 1rem;
    border-radius: 1rem;
    font-size: 0.9375rem;
    line-height: 1.6;
    word-break: break-word;
}

.ai-msg-bubble-user {
    background: var(--va-accent);
    color: #1a1a2e;
    font-weight: 500;
    border-bottom-right-radius: 0.25rem;
}

.ai-msg-bubble-ai {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: var(--va-text);
    border-bottom-left-radius: 0.25rem;
}

.ai-msg-bubble-ai strong { color: var(--va-accent); }

.ai-typing {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--va-text-muted);
    font-size: 0.875rem;
}

/* Input bar */
.ai-chat-input {
    display: flex;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    background: var(--va-card);
}

.ai-chat-input-field {
    flex: 1;
    height: 44px;
    padding: 0 1rem;
    background: var(--va-bg);
    border: 1px solid var(--va-border);
    border-radius: 1.5rem;
    color: var(--va-text);
    font-size: 0.9375rem;
    outline: none;
    transition: border-color var(--va-transition);
}

.ai-chat-input-field:focus {
    border-color: var(--va-accent);
}

.ai-chat-send-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: none;
    background: var(--va-accent);
    color: #fff;
    font-size: 1.125rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity var(--va-transition);
    flex-shrink: 0;
}

.ai-chat-send-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.ai-chat-send-btn:hover:not(:disabled) {
    opacity: 0.85;
}

/* Light mode */
.light .ai-msg-bubble-ai {
    background: rgba(0, 0, 0, 0.03);
    border-color: rgba(0, 0, 0, 0.06);
}

.light .ai-chat-input {
    border-top-color: rgba(0, 0, 0, 0.06);
}

/* ============ Radar 20x20 Heatmap Grid (SP3 style) ============ */
.radar-heatmap-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
}

.radar-heatmap-grid {
    display: grid;
    grid-template-columns: repeat(20, 1fr);
    gap: 2px;
    width: 100%;
    max-width: 500px;
    aspect-ratio: 1;
}

.radar-heatmap-cell {
    aspect-ratio: 1;
    border-radius: 2px;
    transition: transform 0.15s;
    cursor: default;
}

.radar-heatmap-cell:hover {
    transform: scale(1.3);
    z-index: 1;
}

.radar-heatmap-legend {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.radar-heatmap-gradient {
    width: 120px;
    height: 12px;
    border-radius: 6px;
    background: linear-gradient(to right,
        rgba(78,205,196,0.2),
        rgba(6,182,212,0.6),
        rgba(250,204,21,0.8),
        rgba(220,38,38,0.95));
}

/* ============ Device Class Chips ============ */
.device-class-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
}

.chip {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.625rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid;
    transition: all 0.15s ease;
    user-select: none;
}

.chip-active {
    background: var(--va-primary, #6366f1);
    border-color: var(--va-primary, #6366f1);
    color: #fff;
}

.chip-inactive {
    background: transparent;
    border-color: var(--va-border, #374151);
    color: var(--va-text-muted, #9ca3af);
}

.chip-inactive:hover {
    border-color: var(--va-primary, #6366f1);
    color: var(--va-text, #e5e7eb);
}