/* Dashboard Charts Styles */

/* Charts Section */
.charts-section {
    margin-top: var(--space-xl);
}

/* Charts Grid */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-lg);
}

/* Chart Card */
.chart-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.chart-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.chart-card-wide {
    grid-column: 1 / -1;
}

/* Chart Header */
.chart-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-lg);
}

.chart-header h3 {
    font-size: var(--font-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

/* Chart Period Select */
.chart-period-select {
    padding: var(--space-xs) var(--space-md);
    padding-right: calc(var(--space-md) + 20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: white;
    color: var(--text-primary);
    font-size: var(--font-sm);
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23666' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-sm) center;
    background-size: 10px;
    transition: all 0.2s ease;
}

.chart-period-select:hover {
    border-color: var(--primary-color);
}

.chart-period-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Chart Body */
.chart-body {
    position: relative;
    height: 300px;
}

.chart-card-wide .chart-body {
    height: 200px;
}

/* Canvas */
.chart-body canvas {
    max-height: 100%;
}

/* Chart Loading */
.chart-loading {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.9);
    z-index: 10;
}

.chart-loading i {
    font-size: var(--font-2xl);
    color: var(--primary-color);
    animation: spin 1s linear infinite;
}

/* Chart Error */
.chart-error {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--gray-500);
    text-align: center;
}

.chart-error i {
    font-size: var(--font-3xl);
    margin-bottom: var(--space-md);
    color: var(--gray-400);
}

.chart-error p {
    margin: 0;
    font-size: var(--font-sm);
}

/* Responsive */
@media (max-width: 1200px) {
    .charts-grid {
        grid-template-columns: 1fr;
    }
    
    .chart-card-wide {
        grid-column: 1;
    }
}

@media (max-width: 768px) {
    .charts-section {
        margin-top: var(--space-lg);
    }
    
    .charts-grid {
        gap: var(--space-md);
    }
    
    .chart-card {
        padding: var(--space-md);
    }
    
    .chart-header {
        flex-direction: column;
        align-items: stretch;
        gap: var(--space-sm);
    }
    
    .chart-period-select {
        width: 100%;
    }
    
    .chart-body {
        height: 250px;
    }
    
    .chart-card-wide .chart-body {
        height: 200px;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    .chart-card {
        background: var(--dark-bg-secondary);
        box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    }
    
    .chart-card:hover {
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
    }
    
    .chart-header h3 {
        color: var(--dark-text-primary);
    }
    
    .chart-period-select {
        background: var(--dark-bg-tertiary);
        border-color: var(--dark-border-color);
        color: var(--dark-text-primary);
    }
    
    .chart-period-select:hover,
    .chart-period-select:focus {
        border-color: var(--primary-color);
    }
    
    .chart-loading {
        background: rgba(17, 24, 39, 0.9);
    }
}

/* Animation */
@keyframes spin {
    to { transform: rotate(360deg); }
}