html,
body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    /* iOS Safari 防止橡皮筋效果 */
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: none;
    /* 防止iOS Safari的弹性滚动 */
    -webkit-user-select: none;
    -webkit-touch-callout: none;
    -webkit-tap-highlight-color: transparent;
}

body {
    /* color: rgba(255, 255, 255, 0.87); */
    background-color: #ffffff;
    font-family: 'OPPOSans-Ver2-Regular', 'OPPOSans-Ver2-Medium', 'OPPOSans-Ver2-Bold', Arial, Helvetica, sans-serif;
    /* 优化文字渲染 */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    /* 字体加载优化 */
    font-display: swap;
}

#app {
    width: 100%;
    height: min(calc(var(--vh, 1vh) * 100), 100vh);
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    /* 确保在iOS Safari中正确显示 */
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
}

/* 游戏容器优化 */
#game-container {
    /* 确保画布清晰度 */
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
    image-rendering: pixelated;
    /* iOS Safari 优化 */
    /* -webkit-transform: translateZ(0);
    transform: translateZ(0); */
    /* 防止iOS Safari中的canvas露出 */
}

/* Canvas元素的直接样式 */
#game-container canvas {
    width: 100% !important;
    height: 100% !important;
    object-fit: cover;
    /* 确保canvas填满容器 */
    display: block;
    /* iOS优化 */
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
}

/* 字体工具类 */
.font-regular {
    font-family: 'OPPOSans-Ver2-Regular', Arial, Helvetica, sans-serif;
    font-weight: 400;
}

.font-medium {
    font-family: 'OPPOSans-Ver2-Medium', Arial, Helvetica, sans-serif;
    font-weight: 500;
}

.font-bold {
    font-family: 'OPPOSans-Ver2-Bold', Arial, Helvetica, sans-serif;
    font-weight: 700;
}

.font-gothic {
    font-family: 'LeagueGothic-Regular', Arial, Helvetica, sans-serif;
}

.font-segment {
    font-family: 'Segment7Standard', 'Courier New', monospace;
}

/* iOS Safari 特殊优化 */
@supports (-webkit-touch-callout: none) {

    /* 防止iOS Safari中的双击缩放 */
    * {
        -webkit-touch-callout: none;
        -webkit-user-select: none;
        -webkit-tap-highlight-color: transparent;
    }

    /* 防止iOS Safari中的长按菜单 */
    img,
    canvas {
        -webkit-touch-callout: none;
        -webkit-user-select: none;
        pointer-events: auto;
    }
}