/* 优化字体配置 - 2020年后产品兼容性 ERP 字体栈 (Windows 10+, macOS 10.15+, iOS 13+, Android 10+) */
:root {
    --main-font: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Microsoft YaHei UI", "PingFang SC",
        "Hiragino Sans GB", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
}

body {
    font-family: var(--main-font);
    color: var(--main-color);
    line-height: 1.6; /* 增加行高，提升阅读舒适度 */
    letter-spacing: 0.01em; /* 微调字间距 */
    font-variant-numeric: tabular-nums; /* ERP 场景下数字等宽对齐 */
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
    min-height: 100vh;
    padding-bottom: 80px;
    font-size: 16px; /* 移动端基准字号 */
}

/* page header (shared) */
.page-header {
    position: relative;
    overflow: hidden;
    padding: 20px 0;
    margin: 0 0 20px 0;
    background: linear-gradient(135deg, #6ab1e8 0%, #2c6bc9 100%);
    color: white;
    border-bottom: 1px solid var(--border-color);
    border-radius: 4px;
    text-align: center;
    height: 108px;
}

/* page header 扫光效果 */
.page-header::before {
    content: "";
    position: absolute;
    inset: 0;
    width: 100%;
    background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.4) 50%, transparent 100%);
    animation: page-shimmer 10s ease-in-out infinite;
    pointer-events: none;
    z-index: 1;
}

@keyframes page-shimmer {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(100%);
    }
}

/** 卡片阴影效果（统一样式） */
.panel,
.table-card,
.quotation-paper,
.form-card {
    background: white;
    border-radius: 8px;
    box-shadow: var(--card-shadow);
    overflow: hidden;
    margin-bottom: 25px;
    transition: box-shadow 0.3s ease;
}

.panel:hover,
.table-card:hover,
.quotation-paper:hover,
.form-card:hover {
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
}

/* Container for common laptop width */
.container,
.container-fluid,
.container-fixed,
.container-fixed-md,
.container-fixed-sm,
.container-fixed-xs {
    padding-right: 15px;
    padding-left: 15px;
    margin-right: auto;
    margin-left: auto;
    width: 100%;
}

/* 响应式断点设定 - 遵循 2025 年主流设备标准 (Mobile First) */
.container {
    width: 100%;
    margin-right: auto;
    margin-left: auto;
    padding-right: 1rem;
    padding-left: 1rem;
}

/* 手机竖屏 (iPhone 14/15/16, Android) */
@media (min-width: 375px) {
    .container {
        max-width: 100%;
    }
    body {
        font-size: 17px;
    }
}

/* 平板 / 大屏手机横屏 */
@media (min-width: 768px) {
    .container {
        max-width: 720px;
        padding-right: 1.5rem;
        padding-left: 1.5rem;
    }
    body {
        font-size: 18px;
    }
}

/* 笔记本电脑 / iPad Pro */
@media (min-width: 1024px) {
    .container {
        max-width: 960px;
    }
}

/* 标准桌面显示器 (1080p) */
@media (min-width: 1280px) {
    .container {
        max-width: 1200px;
    }
}

/* 2K/超宽屏桌面 (1440p+) */
@media (min-width: 1536px) {
    .container {
        max-width: 1440px;
    }
}

/* 4K 屏幕优化 */
@media (min-width: 1920px) {
    .container {
        max-width: 1600px;
    }
}