html,
body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    overflow: hidden;
    /* 为 Compose Canvas 渲染提供中文字体支持 */
    font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "WenQuanYi Micro Hei", sans-serif;
}

/* 确保 canvas 也继承字体设置 */
canvas {
    font-family: inherit;
}

/* Loading Screen Styles */
#app-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #ffffff;
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    transition: opacity 0.5s ease-out;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 5px solid #f3f3f3;
    border-top: 5px solid #1976d2;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-text {
    margin-top: 20px;
    font-family: sans-serif;
    color: #1976d2;
    font-weight: bold;
}