/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background-color: #f5f5f5;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 20px;
}

#app {
    width: 100%;
    max-width: 800px;
}

/* 导出容器 */
.export-container {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

/* 头部 */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.chart-title {
    color: #ffffff;
    font-size: 32px;
    font-weight: bold;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    flex: 1;
}

.logo-container {
    width: 60px;
    height: 60px;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.logo-container:hover {
    transform: scale(1.1);
}

.logo {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: contain;
    background: white;
    border: 3px solid white;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

/* 图表容器 */
.chart-container {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    padding: 20px;
    min-height: 400px;
}

.chart-container.fade-out {
    opacity: 0;
    transition: opacity 0.2s ease;
}

.chart-container.fade-in {
    opacity: 1;
    transition: opacity 0.3s ease;
}

/* 页脚 */
.footer {
    text-align: center;
    color: rgba(255, 255, 255, 0.8);
    margin-top: 20px;
    font-size: 14px;
}