:root {
    --bs-body-bg: #f5f7fb;
    --bs-body-color: #1f2733;
    --bs-tertiary-bg: #ffffff;
    --bs-border-color: #e5e7eb;
    --chart-line-color-1: #2458e0;
    --chart-line-color-2: #16a34a;
    --chart-line-color-3: #a855f7;
    --chart-doughnut-colors: #2563eb, #16a34a, #f97316, #a855f7, #eab308, #f43f5e, #0ea5e9;
}

[data-bs-theme="dark"] {
    --bs-body-bg: #0f172a;
    --bs-body-color: #e5e7eb;
    --bs-tertiary-bg: #111827;
    --bs-border-color: #1f2937;
    --bs-table-striped-bg: #1f2937;
    --bs-table-striped-color: #e5e7eb;
    --chart-line-color-1: #60a5fa;
    --chart-line-color-2: #4ade80;
    --chart-line-color-3: #c084fc;
    --chart-doughnut-colors: #3b82f6, #4ade80, #fb923c, #c084fc, #facc15, #f87171, #38bdf8;
}

.card {
    box-shadow: 0 8px 24px rgba(17, 24, 39, 0.08);
}

[data-bs-theme="dark"] .card {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

.chart-card {
    background: var(--bs-tertiary-bg);
    border: 1px solid var(--bs-border-color);
    border-radius: 10px;
    padding: 12px;
}

.chart-title {
    font-weight: 700;
    margin-bottom: 8px;
}

/* KPI Cards */
.kpi-card {
    transition: transform 0.2s, box-shadow 0.2s;
    border-width: 2px !important;
    height: 100%;
}

.kpi-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(17, 24, 39, 0.15) !important;
}

[data-bs-theme="dark"] .kpi-card:hover {
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.5) !important;
}

.kpi-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
}

.kpi-card h3 {
    font-weight: 700;
    font-size: 1.75rem;
}

.kpi-card h6 {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

/* Metric Cards */
.metric-card {
    transition: transform 0.2s, box-shadow 0.2s;
    height: 100%;
    border: 1px solid var(--bs-border-color);
}

.metric-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(17, 24, 39, 0.12) !important;
}

[data-bs-theme="dark"] .metric-card:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4) !important;
}

.metric-card h4 {
    font-weight: 700;
    color: var(--bs-body-color);
}

.metric-card h6 {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

/* Chart Containers */
.chart-container {
    border: 1px solid var(--bs-border-color);
    transition: box-shadow 0.2s;
}

.chart-container:hover {
    box-shadow: 0 8px 24px rgba(17, 24, 39, 0.12) !important;
}

[data-bs-theme="dark"] .chart-container:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4) !important;
}

.chart-container .card-header {
    background: var(--bs-tertiary-bg);
    border-bottom: 1px solid var(--bs-border-color);
    padding: 1rem 1.25rem;
}

.chart-container .card-header h5 {
    font-weight: 600;
    font-size: 1rem;
}

.chart-toggle.active {
    background-color: var(--bs-primary);
    color: white;
    border-color: var(--bs-primary);
}

/* Trend Indicators */
.trend-up {
    color: #16a34a;
}

.trend-down {
    color: #dc2626;
}

.trend-neutral {
    color: #6b7280;
}

/* Flash Messages */
.flash-area {
    position: fixed;
    top: 80px;
    right: 20px;
    z-index: 1050;
    max-width: 400px;
}

.flash-area .alert {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    animation: slideInRight 0.3s ease-out;
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .kpi-card h3 {
        font-size: 1.5rem;
    }
    
    .metric-card h4 {
        font-size: 1.25rem;
    }
    
    .chart-container {
        margin-bottom: 1.5rem;
    }
}

/* Loading state */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

/* Table enhancements */
.table thead th {
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.5px;
    border-bottom: 2px solid var(--bs-border-color);
}

.table tbody tr {
    transition: background-color 0.15s;
}

.table tbody tr:hover {
    background-color: var(--bs-table-hover-bg);
}