body {
    font-family: 'Microsoft YaHei', sans-serif;
    background-color: #f8f9fa;
}

.navbar {
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.card {
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    border-radius: 8px;
    border: none;
    margin-bottom: 20px;
}

.card-header {
    border-top-left-radius: 8px !important;
    border-top-right-radius: 8px !important;
}

.list-group-item {
    cursor: pointer;
    transition: all 0.2s ease;
}

.list-group-item:hover {
    background-color: #f0f0f0;
}

.list-group-item.active {
    background-color: #0d6efd;
    border-color: #0d6efd;
}

#chart-container {
    min-height: 500px;
    width: 100%;
}

footer {
    border-top: 1px solid #e9ecef;
    padding-top: 20px;
    margin-top: 30px;
}

.btn-primary {
    background-color: #0d6efd;
    border-color: #0d6efd;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background-color: #0b5ed7;
    border-color: #0a58ca;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

/* 图表说明样式 */
#chart-description {
    font-size: 0.9rem;
}

#chart-description h5 {
    color: #0d6efd;
    margin-bottom: 8px;
}

/* 图表类型介绍样式 */
.card-body h5 {
    color: #0d6efd;
    margin-top: 16px;
    margin-bottom: 8px;
}

.card-body p {
    color: #6c757d;
    margin-bottom: 16px;
}

/* 响应式调整 */
@media (max-width: 768px) {
    #chart-container {
        min-height: 300px;
    }
}