/**
 * Dashboard VoiceBot ILUMNO v4.0
 * Charts CSS - BALANCEADO
 */

/* ========================================
   GRID DE GRÁFICOS - 2x2
   ======================================== */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
    flex: 1;
    min-height: 280px;
}

/* ========================================
   CARD DE GRÁFICO
   ======================================== */
.chart-card {
    background: var(--surface-card);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: all var(--transition-fast);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    min-height: 140px;
}

.chart-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-accent);
}

/* Header del gráfico */
.chart-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-xs) var(--space-sm);
    border-bottom: 1px solid var(--border-color);
    background: var(--surface-hover);
    flex-shrink: 0;
}

.chart-card-title {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 12px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.chart-card-title svg {
    width: 14px;
    height: 14px;
    color: var(--color-accent);
}

/* Acciones del gráfico */
.chart-card-actions {
    display: flex;
    gap: var(--space-xs);
}

.chart-card-btn {
    width: 24px;
    height: 24px;
    border: none;
    background: transparent;
    border-radius: var(--border-radius-sm);
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    opacity: 0;
}

.chart-card:hover .chart-card-btn {
    opacity: 1;
}

.chart-card-btn:hover {
    background: var(--surface-active);
    color: var(--color-accent);
}

.chart-card-btn svg {
    width: 12px;
    height: 12px;
}

/* Contenedor del gráfico */
.chart-wrapper {
    padding: var(--space-sm);
    flex: 1;
    min-height: 120px;
    position: relative;
}

.chart-wrapper canvas {
    width: 100% !important;
    height: 100% !important;
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 1200px) {
    .charts-grid {
        grid-template-columns: repeat(2, 1fr);
        min-height: 250px;
    }
}

@media (max-width: 768px) {
    .charts-grid {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
        min-height: auto;
    }
    
    .chart-card {
        min-height: 200px;
    }
    
    .chart-card-btn {
        opacity: 1;
    }
}

@media (max-width: 576px) {
    .chart-card {
        min-height: 180px;
    }
    
    .chart-wrapper {
        padding: var(--space-xs);
        min-height: 150px;
    }
}