.chart-type-btn {
    padding: 8px 12px;
    border: 1px solid #ddd;
    background: white;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    transition: all 0.2s;
}

.chart-type-btn.active {
    background: #667eea;
    color: white;
    border-color: #667eea;
}

.btn-action {
    padding: 8px 12px;
    border: 1px solid #ccc;
    background: #f8f9fa;
    border-radius: 4px;
    cursor: pointer;
}

/* Efecto hover (opcional) */
.chart-type-btn:hover:not(.active) {
    background: #f0f0f0;
}

.data-toolbar {
    flex-shrink: 0;
}

#chart-container {
    flex: 1;
    width: 100%;
    height: 100%;
}