/* File: frontend/html/css/statistics.css (CON NUOVO LAYOUT) */

.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.kpi-box {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 6px;
    text-align: center;
    border: 1px solid #e1e8ed;
}

.kpi-title {
    display: block;
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 0.5rem;
}

.kpi-value {
    display: block;
    font-size: 1.75rem;
    font-weight: 600;
    color: #2c3e50;
}

.kpi-value.positive { color: #27ae60; }
.kpi-value.negative { color: #e74c3c; }

.charts-grid {
    display: grid;
    grid-template-columns: 1fr 1fr; /* Manteniamo una griglia a due colonne */
    gap: 2rem;
}

/* *** INIZIO MODIFICA LAYOUT *** */
/* Seleziona la prima chart-card e falla espandere su tutte le colonne */
.charts-grid .chart-card:first-child {
    grid-column: 1 / -1;
}
/* *** FINE MODIFICA LAYOUT *** */

.chart-card {
    background: #fdfdfd;
    padding: 1.5rem;
    border-radius: 6px;
    border: 1px solid #e1e8ed;
    display: flex;
    flex-direction: column;
}

.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.chart-card h4 {
    margin: 0;
    color: #2c3e50;
    font-weight: 500;
}

.chart-container {
    position: relative;
    height: 350px;
    width: 100%;
    flex-grow: 1;
}

.form-select-sm {
    padding: 0.4rem 0.6rem;
    font-size: 0.85rem;
    border-radius: 4px;
    border: 1px solid #ddd;
}

#drilldownCard {
    grid-column: 1 / -1;
}

#drilldownTableContainer .table {
    font-size: 0.85rem;
}

@media (max-width: 992px) {
    .charts-grid {
        grid-template-columns: 1fr;
    }

    /* Su mobile, tutte le card occupano una colonna, quindi non serve la regola speciale */
    .charts-grid .chart-card:first-child {
        grid-column: auto;
    }
}