/* ===== layout.css - 布局样式：主体、作文纸、田字格、打印、响应式 ===== */

/* 主体布局 */
.main {
    display: flex;
    min-height: 600px;
}

/* 预览面板 */
.preview-panel {
    flex: 1;
    overflow: auto;
    padding: 24px;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    background: var(--tool-bg-secondary);
}

/* 作文纸（A4比例） */
.paper {
    width: 794px;
    min-height: 1123px;
    background: var(--tool-bg);
    padding: 60px 70px 50px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
    flex-shrink: 0;
}
.paper-title {
    text-align: center;
    font-size: 22px;
    font-weight: 700;
    color: var(--tool-text);
    margin-bottom: 6px;
    font-family: var(--tool-kaiti);
}
.paper-author {
    text-align: center;
    font-size: 13px;
    color: var(--tool-text-muted);
    margin-bottom: 30px;
}
.paper-author span {
    margin: 0 10px;
}

/* 拼音田字格 */
.composition {
    display: flex;
    flex-wrap: wrap;
    line-height: 1;
}
.char-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 2px;
    position: relative;
    flex-shrink: 0;
}
.char-pinyin {
    font-size: 13px;
    color: var(--pinyin-color);
    font-weight: 500;
    height: 20px;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    font-family: "Times New Roman", serif;
    letter-spacing: 0.5px;
}
.char-grid {
    width: 36px;
    height: 36px;
    border: 1px solid var(--tool-text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: var(--tool-text);
    position: relative;
    font-family: var(--tool-kaiti);
    font-weight: 500;
    background: var(--tool-bg);
}
/* 田字格十字线 */
.char-grid::before {
    content: '';
    position: absolute;
    top: 0; bottom: 0;
    left: 50%;
    border-left: 1px dashed var(--tool-border);
}
.char-grid::after {
    content: '';
    position: absolute;
    left: 0; right: 0;
    top: 50%;
    border-top: 1px dashed var(--tool-border);
}
/* 米字格模式 */
.char-grid.mi::before {
    content: '';
    position: absolute;
    top: 0; bottom: 0; left: 0; right: 0;
    background:
        linear-gradient(to right, transparent 49.5%, var(--tool-border) 49.5%, var(--tool-border) 50.5%, transparent 50.5%),
        linear-gradient(to bottom, transparent 49.5%, var(--tool-border) 49.5%, var(--tool-border) 50.5%, transparent 50.5%),
        linear-gradient(45deg, transparent 49.5%, var(--tool-border-light) 49.5%, var(--tool-border-light) 50.5%, transparent 50.5%),
        linear-gradient(-45deg, transparent 49.5%, var(--tool-border-light) 49.5%, var(--tool-border-light) 50.5%, transparent 50.5%);
    border: none;
}
/* 空白格模式（无格子线） */
.char-grid.plain {
    border: none;
}
.char-grid.plain::before,
.char-grid.plain::after {
    display: none;
}
/* 标点符号：只隐藏拼音，保留田字格 */
.char-box.punct .char-pinyin {
    visibility: hidden;
}
/* 换行 */
.char-box.linebreak {
    width: 100%;
    height: 0;
    margin: 0;
    border: none;
}
.char-box.linebreak .char-pinyin,
.char-box.linebreak .char-grid {
    display: none;
}
/* 段落首行缩进占位 */
.char-box.indent {
    width: 72px;
}
.char-box.indent .char-pinyin {
    visibility: hidden;
}
.char-box.indent .char-grid {
    border: none;
    background: transparent;
}
.char-box.indent .char-grid::before,
.char-box.indent .char-grid::after {
    display: none;
}

/* 隐藏拼音 */
.paper.no-pinyin .char-pinyin {
    display: none;
}
.paper.no-pinyin .char-box {
    margin-bottom: 0;
}

/* 统一版权页脚 */
.tool-footer {
    text-align: center;
    padding: 20px 0 12px;
    font-size: 12px;
    color: var(--tool-text-muted);
    border-top: 1px solid var(--tool-border-light);
    margin-top: 24px;
}

/* ===== 打印 ===== */
@media print {
    html, body {
        width: 100%;
        margin: 0 !important;
        padding: 0 !important;
        background: #fff !important;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }
    .toolbar, .input-panel, .tool-footer {
        display: none !important;
    }
    .main {
        width: 100% !important;
        height: auto !important;
        display: block !important;
        margin: 0 !important;
        padding: 0 !important;
    }
    .preview-panel {
        width: 100% !important;
        padding: 0 !important;
        margin: 0 !important;
        overflow: visible !important;
        display: block !important;
    }
    .paper {
        width: 100% !important;
        min-height: auto !important;
        box-shadow: none !important;
        padding: 12mm 10mm 8mm !important;
        margin: 0 !important;
    }
    .paper-title {
        font-size: 20pt !important;
        margin-bottom: 4px !important;
    }
    .paper-author {
        font-size: 10pt !important;
        margin-bottom: 16px !important;
    }
    .composition {
        width: 100% !important;
        display: flex !important;
        flex-wrap: wrap !important;
    }
    .char-box {
        flex-shrink: 0 !important;
        page-break-inside: avoid;
        break-inside: avoid;
    }
    @page {
        size: A4;
        margin: 0;
    }
}

/* ===== 响应式 ===== */
@media (max-width: 900px) {
    .main {
        flex-direction: column;
        height: auto;
    }
    .input-panel {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--tool-border);
    }
    .input-panel textarea {
        min-height: 200px;
    }
    .preview-panel {
        padding: 12px;
    }
    .paper {
        width: 100%;
        padding: 30px 20px;
        min-height: auto;
    }
}