/* ==================== A4纸打印优化样式 ==================== */
@media print {
    /* 设置A4纸张尺寸和边距 - 横向打印 */
    @page {
        size: A4 landscape; /* A4横向 */
        margin: 0; /* 去掉默认边距，避免页眉页脚 */
    }

    /* 横向打印尺寸：297mm × 210mm */
    html, body {
        width: 297mm !important;
        height: 210mm !important;
        overflow: hidden !important;
        margin: 0 !important;
        padding: 0 !important;
    }

    /* 重置页面布局 */
    body {
        background: white;
        margin: 0;
        padding: 0;
        display: block;
        page-break-after: avoid !important;
        page-break-before: avoid !important;
        page-break-inside: avoid !important;
    }

    /* 隐藏不需要打印的元素 */
    .header,
    .orientation-warning,
    .sidebar-left,
    .panel-actions,
    .student-controls,
    .student-stats,
    .classroom-header,
    .btn,
    .seat-remove-btn,
    .seat-delete-btn,
    .multi-select-toolbar,
    .layout-settings-dropdown,
    .modal,
    .pdf-action-bar,
    button {
        display: none !important;
    }

    /* 主容器调整 */
    .main-container {
        display: flex !important;
        flex-direction: column !important;
        grid-template-columns: none !important;
        max-width: 100%;
        width: 297mm !important;
        height: 210mm !important;
        padding: 0;
        margin: 0;
        align-items: center !important;
        justify-content: center !important;
        page-break-inside: avoid !important;
        page-break-after: avoid !important;
        page-break-before: avoid !important;
        overflow: hidden !important;
    }

    /* 主内容区域 */
    .main-content {
        display: flex !important;
        flex-direction: column !important;
        box-shadow: none;
        border-radius: 0;
        overflow: visible;
        margin: 0;
        padding: 0;
        page-break-inside: avoid !important;
        page-break-after: avoid !important;
        page-break-before: avoid !important;
        width: 100%;
        height: 100%;
        align-items: center !important;
        justify-content: center !important;
    }

    .classroom-container {
        display: flex !important;
        flex-direction: column !important;
        padding: 0;
        height: auto;
        overflow: visible;
        width: 100%;
        position: relative;
        align-items: center !important;
        justify-content: center !important;
        page-break-inside: avoid !important;
        page-break-after: avoid !important;
        page-break-before: avoid !important;
    }

    /* 座位图打印样式 - 横向直接显示，无需旋转 */
    .classroom-grid {
        /* A4横向纸：297mm × 210mm */
        display: grid !important;
        visibility: visible !important;
        width: fit-content !important;
        max-width: 100% !important;
        height: auto !important;
        max-height: 100% !important;
        min-height: auto !important;
        margin: 0 auto !important;
        padding: 8px !important;
        background: white !important;
        border: 2px solid #333 !important;
        border-radius: 8px;

        /* 移除旋转 - 横向打印无需旋转 */
        transform: none !important;
        transform-origin: center center !important;

        /* 移除固定宽高比 */
        aspect-ratio: auto !important;

        /* 强制在一页内显示 - 防止分页 */
        page-break-inside: avoid !important;
        page-break-after: avoid !important;
        page-break-before: avoid !important;

        /* 调整间距 */
        gap: 4px !important;
        row-gap: 4px !important;
        column-gap: 4px !important;

        /* 确保内容适应单页 */
        overflow: visible !important;
    }

    /* 座位打印样式 - 横向布局 - 更长的座位框更美观 */
    .seat {
        display: flex !important;
        flex-direction: column !important;
        visibility: visible !important;
        /* 默认尺寸：适合6-8列 - 加长座位框 */
        width: 105px !important;
        height: 52px !important;
        min-width: 105px !important;
        min-height: 52px !important;
        padding: 3px 6px !important;
        border: 1px solid #333 !important;
        border-radius: 4px;
        background: white !important;
        page-break-inside: avoid !important;
        page-break-after: avoid !important;
        page-break-before: avoid !important;
        align-items: center !important;
        justify-content: center !important;
        box-sizing: border-box !important;
        position: relative !important;
    }

    /* 打印模式 - 备注水印样式 */
    .seat-notes-watermark {
        position: absolute !important;
        top: 0 !important;
        bottom: 0 !important;
        right: 2px !important;
        margin: auto 0 !important;
        transform: none !important;
        font-size: 0.45rem !important;
        font-weight: bold !important;
        color: rgba(0, 0, 0, 0.3) !important;
        display: flex !important;
        flex-direction: column !important;
        align-items: center !important;
        justify-content: center !important;
        writing-mode: horizontal-tb !important;
        letter-spacing: 0 !important;
        line-height: 1.1 !important;
        white-space: normal !important;
        width: auto !important;
        height: fit-content !important;
        max-height: none !important;
        overflow: visible !important;
        z-index: 1 !important;
    }

    .seat-notes-watermark span {
        display: block !important;
        text-align: center !important;
    }

    /* 9-10列：缩小座位 - 保持长宽比 */
    .classroom-grid.cols-9-10 .seat {
        width: 85px !important;
        height: 44px !important;
        min-width: 85px !important;
        min-height: 44px !important;
        padding: 2px 5px !important;
    }

    /* 2字和3字名字使用相同字号 */
    .classroom-grid.cols-9-10 .student-name-display.name-2,
    .classroom-grid.cols-9-10 .student-name-display.name-3 {
        font-size: 1.4rem !important;
    }

    .classroom-grid.cols-9-10 .student-name-display.name-4 {
        font-size: 1.3rem !important;
    }

    .classroom-grid.cols-9-10 .student-name-display.name-5 {
        font-size: 1.1rem !important;
    }

    .classroom-grid.cols-9-10 .student-name-display.name-6,
    .classroom-grid.cols-9-10 .student-name-display.name-7,
    .classroom-grid.cols-9-10 .student-name-display.name-8-plus {
        font-size: 1.0rem !important;
    }

    /* 11-12列：进一步缩小 - 保持长宽比 */
    .classroom-grid.cols-11-12 .seat {
        width: 72px !important;
        height: 38px !important;
        min-width: 72px !important;
        min-height: 38px !important;
        padding: 2px 4px !important;
    }

    /* 2字和3字名字使用相同字号 */
    .classroom-grid.cols-11-12 .student-name-display.name-2,
    .classroom-grid.cols-11-12 .student-name-display.name-3 {
        font-size: 1.2rem !important;
    }

    .classroom-grid.cols-11-12 .student-name-display.name-4 {
        font-size: 1.1rem !important;
    }

    .classroom-grid.cols-11-12 .student-name-display.name-5,
    .classroom-grid.cols-11-12 .student-name-display.name-6,
    .classroom-grid.cols-11-12 .student-name-display.name-7,
    .classroom-grid.cols-11-12 .student-name-display.name-8-plus {
        font-size: 1.0rem !important;
    }

    .seat-occupied {
        display: flex !important;
        visibility: visible !important;
        background: white !important;
        border-color: #333 !important;
    }

    .seat-empty {
        display: flex !important;
        visibility: visible !important;
        background: #f5f5f5 !important;
        border-color: #999 !important;
        border-style: dashed !important;
    }

    /* 学生姓名打印样式 - 横向显示 */
    .seat .student-name-display {
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
        visibility: visible !important;
        color: #000 !important;
        font-size: 2.0rem !important;  /* 适配座位框大小 */
        font-weight: 900 !important;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
        line-height: 1 !important;

        /* 横向显示 - 允许换行以完整显示名字 */
        writing-mode: horizontal-tb !important;
        text-orientation: mixed !important;
        letter-spacing: 0.05em !important;
        width: 100% !important;
        height: 100% !important;
        overflow: visible !important;
        white-space: normal !important;
        word-break: keep-all !important;
        text-align: center !important;
        position: static !important;
        transform: none !important;
        margin: 0 !important;
        padding: 0 !important;
    }

    /* 针对不同姓名长度的字体大小优化 */
    /* 2字和3字名字使用相同字号 */
    .seat .student-name-display.name-2,
    .seat .student-name-display.name-3 {
        font-size: 1.7rem !important;
    }

    .seat .student-name-display.name-4 {
        font-size: 1.4rem !important;
    }

    .seat .student-name-display.name-5 {
        font-size: 1.2rem !important;
    }

    .seat .student-name-display.name-6 {
        font-size: 1.0rem !important;
    }

    .seat .student-name-display.name-7 {
        font-size: 0.9rem !important;
    }

    .seat .student-name-display.name-8-plus {
        font-size: 0.8rem !important;
    }

    /* 保持性别颜色（使用用户自定义颜色） */
    .seat-occupied.male .student-name-display {
        color: var(--male-color) !important;
    }

    .seat-occupied.female .student-name-display {
        color: var(--female-color) !important;
    }

    /* 座位编号打印样式 - 默认隐藏，但可通过 hide-coordinates 类控制 */
    /* 仅当没有 hide-coordinates 类时才显示 */
    .classroom-grid:not(.hide-coordinates) .seat-number {
        display: block !important;
        position: absolute !important;
        top: 1px !important;
        left: 1px !important;
        color: #333 !important;
        background-color: rgba(255, 255, 255, 0.8) !important;
        font-size: 0.5rem !important;
        font-weight: 700 !important;
        padding: 1px 2px !important;
        border-radius: 1px !important;
        z-index: 1 !important;
        line-height: 1 !important;
    }

    /* 默认隐藏（当有 hide-coordinates 类时） */
    .classroom-grid.hide-coordinates .seat-number {
        display: none !important;
    }

    /* 讲台打印样式 - 居中显示 */
    .podium-in-grid {
        display: flex !important;
        visibility: visible !important;
        justify-content: center !important;
        align-items: center !important;
        padding: 8px 0 !important;
        margin: 8px 0 0 0 !important;
        page-break-inside: avoid !important;
        page-break-after: avoid !important;
        page-break-before: avoid !important;
        grid-column: 1 / -1 !important;
    }

    .podium-shape {
        display: flex !important;
        visibility: visible !important;
        width: 200px !important;
        height: 48px !important;
        background: #666 !important;
        border: 1.5px solid #333 !important;
        border-radius: 6px !important;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
        align-items: center !important;
        justify-content: center !important;
    }

    .podium-text {
        display: block !important;
        visibility: visible !important;
        color: white !important;
        font-size: 1.1rem !important;
        font-weight: 700 !important;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }

    /* 确保颜色正确打印 */
    * {
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }

    /* 移除不必要的阴影和效果 */
    .seat,
    .classroom-grid,
    .podium-shape {
        box-shadow: none !important;
    }

    /* 全局防止分页规则 - 确保所有内容在一页内 */
    * {
        page-break-inside: avoid !important;
    }

    /* 强制打印为单页 */
    html {
        height: 100%;
        max-height: 210mm;
        overflow: hidden;
    }
}

/* ==================== PDF导出模式 - 使用与打印相同的样式 ==================== */
/* 当 body 添加 pdf-export-mode class 时，应用以下样式 */
/* 注意：必须使用 !important 覆盖 mobile.css 中的样式 */

body.pdf-export-mode {
    background: white !important;
    overflow: visible !important;
    /* 横向 A4 尺寸：297mm × 210mm */
    width: 297mm !important;
    height: 210mm !important;
    min-height: 210mm !important;
    max-width: none !important;
    margin: 0 auto !important;
    padding: 0 !important;
}

body.pdf-export-mode .header,
body.pdf-export-mode .sidebar-left,
body.pdf-export-mode .panel-actions,
body.pdf-export-mode .student-controls,
body.pdf-export-mode .student-stats,
body.pdf-export-mode .classroom-header,
body.pdf-export-mode .btn,
body.pdf-export-mode .seat-remove-btn,
body.pdf-export-mode .seat-delete-btn,
body.pdf-export-mode .multi-select-toolbar,
body.pdf-export-mode .layout-settings-dropdown,
body.pdf-export-mode .modal,
body.pdf-export-mode .orientation-warning,
body.pdf-export-mode button {
    display: none !important;
}

body.pdf-export-mode .main-container {
    display: flex !important;
    flex-direction: column !important;
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    min-height: 100% !important;
    padding: 0 !important;
    margin: 0 !important;
    align-items: center !important;
    justify-content: center !important;
    overflow: visible !important;
    box-sizing: border-box !important;
    position: relative !important;
}

body.pdf-export-mode .main-content {
    box-shadow: none !important;
    border-radius: 0 !important;
    overflow: visible !important;
    margin: 0 !important;
    padding: 0 !important;
    width: 100% !important;
    max-width: 100% !important;
    height: auto !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    box-sizing: border-box !important;
}

body.pdf-export-mode .classroom-container {
    padding: 0 !important;
    height: auto !important;
    min-height: auto !important;
    overflow: visible !important;
    display: flex !important;
    flex-direction: column !important;
    align-items: stretch !important; /* 改为stretch，让子元素可以自定义对齐 */
    justify-content: flex-start !important; /* 从顶部开始排列 */
    width: 100% !important;
    max-width: 100% !important;
    position: relative !important;
    box-sizing: border-box !important;
}

body.pdf-export-mode .classroom-grid {
    /* 横向 A4 适配尺寸 */
    width: auto !important;
    max-width: 27cm !important;
    height: auto !important;
    max-height: none !important;
    min-height: auto !important;
    /* 关键：左右居中，上下也要自动 */
    margin: auto !important;
    padding: 0.4cm !important;
    background: white !important;
    border: 2px solid #333 !important;
    border-radius: 6px !important;

    /* 移除旋转 - 横向显示无需旋转 */
    transform: none !important;

    /* 移除移动端的自适应设置 */
    aspect-ratio: auto !important;

    /* 固定间距 */
    gap: 6px !important;
    row-gap: 6px !important;
    column-gap: 6px !important;

    /* 确保可见 */
    overflow: visible !important;
    box-sizing: border-box !important;

    /* 覆盖移动端的 grid-auto-rows */
    grid-auto-rows: auto !important;

    /* 确保宽度合理分布 */
    display: grid !important;
}

body.pdf-export-mode .seat {
    /* 桌面端座位尺寸 - 加长座位框更美观 */
    width: 110px !important;
    height: 52px !important;
    min-width: 110px !important;
    max-width: 110px !important;
    min-height: 52px !important;
    max-height: 52px !important;
    padding: 2px !important; /* 减少内边距，让 Flexbox 控制居中 */
    border: 1.5px solid #333 !important;
    border-radius: 4px !important;
    background: white !important;
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    justify-content: center !important;
    overflow: visible !important;
    box-sizing: border-box !important;
    aspect-ratio: auto !important;
    position: relative !important;
}

/* PDF导出模式 - 备注水印样式 */
body.pdf-export-mode .seat-notes-watermark {
    position: absolute !important;
    top: 2px !important;
    right: 2px !important;
    bottom: 2px !important;
    left: auto !important;
    transform: none !important;
    font-size: 8px !important;
    font-weight: bold !important;
    color: rgba(0, 0, 0, 0.3) !important;
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    justify-content: center !important;
    writing-mode: horizontal-tb !important;
    letter-spacing: 0 !important;
    line-height: 1.1 !important;
    word-break: keep-all !important;
    word-wrap: normal !important;
    overflow-wrap: normal !important;
    width: 12px !important;
    min-width: 12px !important;
    max-width: 12px !important;
    overflow: visible !important;
    z-index: 1 !important;
    pointer-events: none !important;
}

body.pdf-export-mode .seat-notes-watermark span {
    display: block !important;
    text-align: center !important;
    width: 100% !important;
}

/* PDF导出模式 - 9-10列缩小 - 保持长宽比 */
body.pdf-export-mode .classroom-grid.cols-9-10 .seat {
    width: 86px !important;
    height: 42px !important;
    min-width: 86px !important;
    max-width: 86px !important;
    min-height: 42px !important;
    max-height: 42px !important;
    padding: 3px 6px !important;
}

body.pdf-export-mode .classroom-grid.cols-9-10 .student-name-display {
    line-height: 42px !important;
    height: 42px !important;
}

/* 2字和3字名字使用相同字号 */
body.pdf-export-mode .classroom-grid.cols-9-10 .student-name-display.name-2,
body.pdf-export-mode .classroom-grid.cols-9-10 .student-name-display.name-3 {
    font-size: 1.5rem !important;
}

body.pdf-export-mode .classroom-grid.cols-9-10 .student-name-display.name-4 {
    font-size: 1.3rem !important;
}

body.pdf-export-mode .classroom-grid.cols-9-10 .student-name-display.name-5 {
    font-size: 1.1rem !important;
}

body.pdf-export-mode .classroom-grid.cols-9-10 .student-name-display.name-6,
body.pdf-export-mode .classroom-grid.cols-9-10 .student-name-display.name-7,
body.pdf-export-mode .classroom-grid.cols-9-10 .student-name-display.name-8-plus {
    font-size: 1.0rem !important;
}

/* PDF导出模式 - 11-12列进一步缩小 - 保持长宽比 */
body.pdf-export-mode .classroom-grid.cols-11-12 .seat {
    width: 72px !important;
    height: 36px !important;
    min-width: 72px !important;
    max-width: 72px !important;
    min-height: 36px !important;
    max-height: 36px !important;
    padding: 3px 5px !important;
}

body.pdf-export-mode .classroom-grid.cols-11-12 .student-name-display {
    line-height: 36px !important;
    height: 36px !important;
}

/* 2字和3字名字使用相同字号 */
body.pdf-export-mode .classroom-grid.cols-11-12 .student-name-display.name-2,
body.pdf-export-mode .classroom-grid.cols-11-12 .student-name-display.name-3 {
    font-size: 1.2rem !important;
}

body.pdf-export-mode .classroom-grid.cols-11-12 .student-name-display.name-4 {
    font-size: 1.1rem !important;
}

body.pdf-export-mode .classroom-grid.cols-11-12 .student-name-display.name-5,
body.pdf-export-mode .classroom-grid.cols-11-12 .student-name-display.name-6,
body.pdf-export-mode .classroom-grid.cols-11-12 .student-name-display.name-7,
body.pdf-export-mode .classroom-grid.cols-11-12 .student-name-display.name-8-plus {
    font-size: 1.0rem !important;
}

body.pdf-export-mode .seat-occupied {
    background: white !important;
    border-color: #333 !important;
}

body.pdf-export-mode .seat-empty {
    background: #f5f5f5 !important;
    border-color: #999 !important;
    border-style: dashed !important;
}

body.pdf-export-mode .student-name-display {
    display: block !important;
    color: #000 !important;
    font-size: 1.9rem !important;  /* 稍微调小，增加留白，更美观 */
    font-weight: 900 !important;
    line-height: 52px !important;   /* 与座位高度一致，实现垂直居中 */
    writing-mode: horizontal-tb !important;
    text-orientation: mixed !important;
    letter-spacing: 0.02em !important; /* 微调字间距 */
    width: 100% !important;
    height: 52px !important;
    max-width: 100% !important;
    margin: 0 !important;          /* 确保无外边距干扰居中 */
    padding: 0 !important;
    overflow: visible !important;
    white-space: nowrap !important; /* 防止意外换行 */
    word-break: keep-all !important;
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    transform: none !important;
    text-align: center !important;
}

/* 2字和3字名字使用相同字号 */
body.pdf-export-mode .student-name-display.name-2,
body.pdf-export-mode .student-name-display.name-3 {
    font-size: 1.6rem !important;
}

body.pdf-export-mode .student-name-display.name-4 {
    font-size: 1.4rem !important;
}

body.pdf-export-mode .student-name-display.name-5 {
    font-size: 1.2rem !important;
}

body.pdf-export-mode .student-name-display.name-6 {
    font-size: 1.0rem !important;
}

body.pdf-export-mode .student-name-display.name-7 {
    font-size: 0.9rem !important;
}

body.pdf-export-mode .student-name-display.name-8-plus {
    font-size: 0.8rem !important;
}

/* 保持性别颜色（使用用户自定义颜色） */
body.pdf-export-mode .seat-occupied.male .student-name-display {
    color: var(--male-color) !important;
}

body.pdf-export-mode .seat-occupied.female .student-name-display {
    color: var(--female-color) !important;
}

/* PDF导出模式 - 座位编号显示逻辑 */
/* 仅当没有 hide-coordinates 类时才显示 */
body.pdf-export-mode .classroom-grid:not(.hide-coordinates) .seat-number {
    display: block !important;
    position: absolute !important;
    top: 1px !important;
    left: 1px !important;
    color: #333 !important;
    background-color: rgba(255, 255, 255, 0.8) !important;
    font-size: 0.5rem !important;
    font-weight: 700 !important;
    padding: 1px 2px !important;
    border-radius: 1px !important;
    z-index: 1 !important;
    line-height: 1 !important;
}

/* 默认隐藏（当有 hide-coordinates 类时） */
body.pdf-export-mode .classroom-grid.hide-coordinates .seat-number {
    display: none !important;
}

body.pdf-export-mode .podium-in-grid {
    padding: 1% !important;
    margin: 0.5% 0 0 0 !important;
}

body.pdf-export-mode .podium-shape {
    width: 200px !important;
    height: 48px !important;
    background: #666 !important;
    border: 1.5px solid #333 !important;
    border-radius: 6px !important;
}

body.pdf-export-mode .podium-text {
    color: white !important;
    font-size: 1.1rem !important;
    font-weight: 700 !important;
}

body.pdf-export-mode .seat,
body.pdf-export-mode .classroom-grid,
body.pdf-export-mode .podium-shape {
    box-shadow: none !important;
}

/* ==================== 打印页脚样式 (排座宝水印) ==================== */

/* 1. 物理打印时的样式 (Ctrl+P) */
@media print {
    .print-footer {
        display: flex !important;
        flex-direction: column !important;
        position: fixed !important;
        bottom: 5mm !important;
        left: 5mm !important;
        z-index: 9999 !important;
        color: #aaa !important; /* 浅灰色 */
        text-align: left !important;
        line-height: 1.2 !important;
        opacity: 0.7 !important;
    }

    .print-brand {
        font-size: 8pt !important;
        font-weight: normal !important;
    }

    .print-url {
        font-size: 6pt !important;
        font-family: sans-serif !important;
    }
}

/* 2. PDF导出/图片保存时的样式 (html2canvas截图) */
body.pdf-export-mode .print-footer {
    /* 截图时先隐藏，通过JS单独截取并放置在PDF左下角 */
    display: none !important;
    
    /* 保留原有样式供JS单独截图时使用（虽然JS截图时可能不会直接用到这个类，但为了保险保留结构） */
    flex-direction: column !important;
    position: relative !important; 
    align-self: flex-start !important;
    margin: 0 !important;
    padding: 5px !important;
    z-index: 999 !important;
    color: #aaa !important;
    text-align: left !important;
    line-height: 1.2 !important;
    opacity: 0.7 !important;
    background: transparent !important;
    width: auto !important;
    height: auto !important;
}

body.pdf-export-mode .print-brand {
    font-size: 10px !important;
    font-weight: normal !important;
}

body.pdf-export-mode .print-url {
    font-size: 8px !important;
    font-family: sans-serif !important;
}