:root {
    --bt-stat-expense: #dc3545;
    --bt-stat-income: #198754;
    --bt-stat-net: #0d6efd;
    --bt-stat-budget: #fd7e14;
}

body {
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    min-height: 100vh;
    min-height: 100dvh;
}

.app-navbar {
    border-bottom: 1px solid var(--bs-border-color);
}

.app-navbar .navbar-brand {
    font-weight: 700;
    letter-spacing: -0.02em;
}

.app-navbar .nav-link {
    font-weight: 500;
    border-radius: 0.375rem;
    padding: 0.4rem 0.75rem;
}

.app-navbar .nav-link.active {
    background-color: var(--bs-primary-bg-subtle);
    color: var(--bs-primary);
}

.page-header {
    margin-bottom: 1.5rem;
}

.page-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.stat-card {
    border: 0;
    box-shadow: 0 0.125rem 0.5rem rgba(0, 0, 0, 0.06);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 0.25rem 0.75rem rgba(0, 0, 0, 0.1);
}

[data-bs-theme="dark"] .stat-card {
    box-shadow: 0 0.125rem 0.5rem rgba(0, 0, 0, 0.25);
}

.stat-card .stat-icon {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.stat-card.stat-expense .stat-icon { background: rgba(220, 53, 69, 0.15); color: var(--bt-stat-expense); }
.stat-card.stat-income .stat-icon { background: rgba(25, 135, 84, 0.15); color: var(--bt-stat-income); }
.stat-card.stat-net .stat-icon { background: rgba(13, 110, 253, 0.15); color: var(--bt-stat-net); }
.stat-card.stat-budget .stat-icon { background: rgba(253, 126, 20, 0.15); color: var(--bt-stat-budget); }

.stat-card .stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}

.stat-card .stat-label {
    font-size: 0.8125rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--bs-secondary-color);
}

.content-card {
    border: 0;
    box-shadow: 0 0.125rem 0.5rem rgba(0, 0, 0, 0.06);
    margin-bottom: 1.5rem;
}

.content-card .card-header {
    background: transparent;
    border-bottom: 1px solid var(--bs-border-color);
    padding: 1rem 1.25rem;
}

.content-card .card-header h2,
.content-card .card-header h3 {
    margin: 0;
    font-size: 1.125rem;
    font-weight: 600;
}

.content-card .card-body {
    padding: 1.25rem;
}

.filter-bar {
    background: var(--bs-tertiary-bg);
    border-radius: 0.5rem;
    padding: 1rem;
    margin-bottom: 1.25rem;
}

.table-app thead th {
    font-size: 0.8125rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--bs-secondary-color);
    white-space: nowrap;
}

.table-app tbody td {
    vertical-align: middle;
}

.table-app .amount-cell {
    font-variant-numeric: tabular-nums;
    font-weight: 500;
    text-align: right;
    white-space: nowrap;
}

.table-app thead th.sortable a {
    color: inherit;
    text-decoration: none;
}

.table-app thead th.sortable a:hover {
    color: var(--bs-primary);
}

.table-responsive-sticky {
    max-height: 70vh;
    overflow: auto;
}

.table-responsive-sticky thead th {
    position: sticky;
    top: 0;
    background: var(--bs-body-bg);
    z-index: 1;
    box-shadow: 0 1px 0 var(--bs-border-color);
}

.empty-state {
    text-align: center;
    padding: 2.5rem 1rem;
    color: var(--bs-secondary-color);
}

.empty-state i {
    font-size: 2rem;
    margin-bottom: 0.75rem;
    display: block;
    opacity: 0.5;
}

.form-page {
    max-width: 640px;
    margin: 0 auto;
}

.section-divider {
    margin: 2rem 0;
    border-top: 1px solid var(--bs-border-color);
}

.category-scroll-box {
    max-height: 200px;
    overflow-y: auto;
    border: 1px solid var(--bs-border-color);
    padding: 0.75rem;
    border-radius: 0.375rem;
    background: var(--bs-tertiary-bg);
}

.password-feedback {
    font-size: 0.875rem;
    color: var(--bs-danger);
    margin-top: 0.25rem;
    min-height: 1.5rem;
}

/* Auth pages */
.auth-page {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.auth-page .auth-shell {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    width: 100%;
    max-width: 420px;
    margin: 0 auto;
    padding: 1.5rem;
}

.auth-page .auth-brand {
    text-align: center;
    margin-bottom: 1.5rem;
}

.auth-page .auth-brand h1 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

/* Dashboards */
.dashboard-page .form-section {
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--bs-border-color);
}

.dashboard-page .chart-row {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
}

.dashboard-page .chart-col {
    flex: 1;
    min-width: 280px;
    max-width: 450px;
}

.dashboard-page .chart-container {
    max-width: 400px;
    margin: 0 auto;
    position: relative;
}

.dashboard-page .bar-chart-container {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.dashboard-page .category-list {
    list-style: none;
    padding: 0;
    margin: 0;
    max-height: 300px;
    overflow-y: auto;
}

.dashboard-page .category-list li {
    margin-bottom: 0.3rem;
    font-size: 0.9rem;
    padding: 0.5rem;
    display: flex;
    justify-content: space-between;
    border-radius: 0.25rem;
}

.dashboard-page .category-list li:nth-child(odd) {
    background: var(--bs-tertiary-bg);
}

.dashboard-page .category-list li:hover {
    background: var(--bs-secondary-bg);
    cursor: pointer;
}

.dashboard-page .category-list li.hidden {
    display: none;
}

.dashboard-page .more-items {
    font-style: italic;
    color: var(--bs-secondary-color);
    font-size: 0.9rem;
    padding: 0.5rem;
}

.dashboard-page .chart-spinner {
    display: block;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.dashboard-page .chart-container.loaded .chart-spinner,
.dashboard-page .bar-chart-container.loaded .chart-spinner {
    display: none;
}

/* Net worth */
.networth-page .nw-bar-chart {
    height: 280px;
    max-width: none;
}

.networth-page .nw-stacked-chart {
    position: relative;
    height: 220px;
}

.networth-page .nw-history-scroll {
    max-height: 520px;
    overflow: auto;
}

.networth-page .nw-history-table .nw-sticky-col {
    position: sticky;
    left: 0;
    background: var(--bs-body-bg);
    z-index: 2;
    min-width: 88px;
}

.networth-page .nw-history-table .nw-sticky-col-2 {
    position: sticky;
    left: 88px;
    background: var(--bs-body-bg);
    z-index: 2;
    min-width: 120px;
}

.networth-page .nw-total-row {
    background: var(--bs-tertiary-bg);
}

.networth-page .nw-sparkline {
    width: 72px;
    height: 22px;
    display: block;
}

.networth-page .nw-cell-delta {
    font-size: 0.75rem;
}

.networth-page .nw-item-row {
    cursor: pointer;
}

.networth-page .nw-item-link {
    color: inherit;
    text-decoration: none;
    font-weight: 500;
}

.networth-page .nw-item-link:hover {
    color: var(--bs-primary);
    text-decoration: underline;
}

.networth-page .stat-net .stat-delta-up { color: var(--bs-success); }
.networth-page .stat-net .stat-delta-down { color: var(--bs-danger); }
.networth-page .stat-expense .stat-delta-down { color: var(--bs-success); }
.networth-page .stat-expense .stat-delta-up { color: var(--bs-danger); }

.quick-actions .btn {
    min-width: 140px;
}

.stat-delta {
    font-size: 0.75rem;
    font-weight: 500;
}

.stat-delta-up { color: var(--bs-danger); }
.stat-delta-down { color: var(--bs-success); }
.stat-delta-flat { color: var(--bs-secondary-color); }

/* Expenses up vs last month is bad — invert colors on expense card */
.stat-expense .stat-delta-up { color: var(--bs-danger); }
.stat-expense .stat-delta-down { color: var(--bs-success); }
.stat-income .stat-delta-up { color: var(--bs-success); }
.stat-income .stat-delta-down { color: var(--bs-danger); }
.stat-net .stat-delta-up { color: var(--bs-success); }
.stat-net .stat-delta-down { color: var(--bs-danger); }

.budget-progress { height: 0.65rem; }
.budget-progress-sm { height: 0.4rem; }

.home-chart-wrap {
    position: relative;
    height: 280px;
}

.insight-item a {
    text-decoration: none;
}

.insight-item a:hover {
    text-decoration: underline;
}

.dashboard-tabs .nav-link {
    font-weight: 500;
}

.dashboard-chart-lg {
    position: relative;
    height: 360px;
}

.dashboard-chart-md {
    position: relative;
    height: 300px;
    max-width: 320px;
}

.dashboard-drill-row:hover {
    background: var(--bs-tertiary-bg);
}

.explore-drill-select {
    max-width: 11rem;
}

.explore-summary-chart {
    height: 220px;
    max-width: none;
}

.explore-help-card {
    border-left: 3px solid var(--bs-primary);
}

.explore-dashboard .dashboard-chart-md {
    height: 260px;
    max-width: none;
}

.compare-summary-chart {
    height: 280px;
    max-width: none;
}

.compare-delta-good {
    color: var(--bs-success);
    font-weight: 600;
}

.compare-delta-bad {
    color: var(--bs-danger);
    font-weight: 600;
}

.compare-delta-neutral {
    color: var(--bs-secondary);
}

.compare-insights li {
    padding: 0.25rem 0;
    font-size: 0.925rem;
}

.compare-insights-card {
    border-left: 3px solid var(--bs-warning);
}

.compare-sparkline {
    width: 80px;
    height: 24px;
    display: block;
}

.compare-detail-tabs .nav-link {
    font-weight: 500;
}

.compare-mover-list .list-group-item {
    font-size: 0.9rem;
}

@media (max-width: 991.98px) {
    .page-header h1 {
        font-size: 1.5rem;
    }

    .stat-card .stat-value {
        font-size: 1.25rem;
    }
}

/* PWA — Add to Home Screen / standalone mode */
@media (display-mode: standalone) {
    body {
        padding-left: env(safe-area-inset-left);
        padding-right: env(safe-area-inset-right);
    }

    .app-navbar {
        padding-top: max(0.25rem, env(safe-area-inset-top));
    }

    main.container {
        padding-bottom: max(1.5rem, env(safe-area-inset-bottom));
    }
}