/* ========================================
   小学生练字字帖生成工具 - 样式表
   参考风格：7ub.cn（古典中国风）
   ======================================== */

/* 全局重置 */
* {
    margin: 0;
    padding: 0;
}

body {
    font-family: "Microsoft YaHei", "SimSun", "宋体", Arial, sans-serif;
    font-size: 14px;
    color: #333;
    background-color: #f5efe0;
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><rect fill="%23f5efe0" width="100" height="100"/><path d="M0 0h100v100H0z" fill="url(%23grain)"/><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="%23e8dfc8" opacity="0.3"/><circle cx="75" cy="75" r="1" fill="%23e8dfc8" opacity="0.3"/><circle cx="50" cy="10" r="0.5" fill="%23e8dfc8" opacity="0.2"/></pattern></defs></svg>');
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

a {
    color: #c41e3a;
    text-decoration: none;
}

a:hover {
    color: #8b0000;
}

/* ========== 主体内容（内容区总宽不超过 1200px） ========== */
.main-content {
    max-width: 1200px;
    margin: 20px auto;
    display: flex;
    gap: 20px;
    flex: 1;
    width: 100%;
    box-sizing: border-box;
}

/* 左侧控制面板（缩短宽度，配合右侧一起不超过 1200px） */
.control-panel {
    flex: 0 0 320px;
    width: 320px;
    background: #fdfaf0;
    border: 1px solid #d4c8a8;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    height: fit-content;
    box-sizing: border-box;
}

.panel-title {
    font-size: 18px;
    color: #8b4513;
    font-weight: bold;
    margin-bottom: 8px;
    padding-bottom: 10px;
    border-bottom: 2px solid #d4a574;
    font-family: "KaiTi", "楷体", serif;
}

.panel-desc {
    font-size: 12px;
    color: #8b7355;
    margin-bottom: 15px;
    line-height: 1.5;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    font-size: 13px;
    color: #6b5344;
    margin-bottom: 5px;
    font-weight: bold;
}

.form-group textarea {
    width: 100%;
    height: 120px;
    padding: 10px;
    border: 1px solid #d4c8a8;
    border-radius: 4px;
    font-size: 14px;
    resize: vertical;
    background: #fff;
    font-family: "KaiTi", "楷体", "SimSun", "宋体", serif;
    line-height: 1.8;
    box-sizing: border-box;
}

.form-group textarea:focus,
.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: #c41e3a;
    box-shadow: 0 0 3px rgba(196, 30, 58, 0.3);
}

.form-row {
    display: flex;
    gap: 10px;
    align-items: center;
}

.form-row label {
    flex: 0 0 80px;
    margin-bottom: 0;
    font-size: 13px;
}

.form-row input[type="number"] {
    flex: 1;
    height: 32px;
    padding: 0 8px;
    border: 1px solid #d4c8a8;
    border-radius: 4px;
    font-size: 14px;
    background: #fff;
    box-sizing: border-box;
}

.form-row select {
    flex: 1;
    height: 32px;
    padding: 0 8px;
    border: 1px solid #d4c8a8;
    border-radius: 4px;
    font-size: 14px;
    background: #fff;
    cursor: pointer;
    box-sizing: border-box;
}

.form-group input[type="text"] {
    width: 100%;
    height: 32px;
    padding: 0 10px;
    border: 1px solid #d4c8a8;
    border-radius: 4px;
    font-size: 14px;
    background: #fff;
    box-sizing: border-box;
}

/* 复选框组 */
.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding-left: 80px;
}

.checkbox-item {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    font-size: 13px;
    color: #555;
}

.checkbox-item input[type="checkbox"] {
    width: 16px;
    height: 16px;
    cursor: pointer;
    accent-color: #c41e3a;
}

/* 按钮组 */
.btn-group {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 20px;
    padding-top: 15px;
    border-top: 1px dashed #d4c8a8;
}

.btn {
    padding: 10px 18px;
    border: none;
    border-radius: 4px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
    font-weight: bold;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.btn-primary {
    background: linear-gradient(to bottom, #2e8b57 0%, #228b22 100%);
    color: #fff;
}

.btn-primary:hover {
    background: linear-gradient(to bottom, #3cb371 0%, #2e8b57 100%);
}

.btn-secondary {
    background: linear-gradient(to bottom, #d4a574 0%, #c49464 100%);
    color: #fff;
}

.btn-secondary:hover {
    background: linear-gradient(to bottom, #e0b584 0%, #d4a574 100%);
}

.btn-danger {
    background: linear-gradient(to bottom, #c41e3a 0%, #a01830 100%);
    color: #fff;
}

.btn-danger:hover {
    background: linear-gradient(to bottom, #d42e4a 0%, #c41e3a 100%);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

/* 模式说明 */
.mode-desc {
    margin-top: 15px;
    padding: 10px;
    background: #f0e8d0;
    border-radius: 4px;
    font-size: 12px;
    color: #8b7355;
    line-height: 1.6;
}

/* ========== 右侧预览区 ========== */
.preview-area {
    flex: 1;
    min-width: 0;
    background: #e8e4d8;
    border: 1px solid #d4c8a8;
    border-radius: 8px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    box-sizing: border-box;
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid #d4a574;
    flex-wrap: wrap;
    gap: 8px;
}

.preview-title {
    font-size: 18px;
    color: #8b4513;
    font-weight: bold;
    font-family: "KaiTi", "楷体", serif;
}

.preview-info {
    font-size: 13px;
    color: #8b7355;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
}

/* A4 预览容器 */
.a4-container {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    overflow: auto;
    padding: 20px;
    background: #d0ccc0;
    border-radius: 4px;
}

.a4-page {
    background: #fff;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
    position: relative;
}

.a4-page canvas {
    display: block;
}

/* 分页控制 */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    margin-top: 15px;
    padding-top: 10px;
    border-top: 1px solid #d4c8a8;
}

.page-btn {
    padding: 6px 15px;
    background: #f5efe0;
    border: 1px solid #d4c8a8;
    border-radius: 4px;
    cursor: pointer;
    font-size: 13px;
    color: #6b5344;
}

.page-btn:hover {
    background: #e8dfc8;
}

.page-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.page-info {
    font-size: 14px;
    color: #6b5344;
}



/* 友情链接 */
.friend-links {
    background: #f5efe0;
    padding: 10px 0;
    border-top: 1px solid #d4c8a8;
    margin-bottom: -20px;
}

.friend-links-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    font-size: 12px;
    color: #8b7355;
}

.friend-links a {
    color: #8b7355;
    margin: 0 8px;
}

/* ========== 响应式 ========== */
@media (max-width: 900px) {
    .main-content {
        flex-direction: column;
    }
    
    .control-panel {
        flex: none;
        width: 100%;
    }
    
    .header-inner {
        flex-direction: column;
        gap: 15px;
    }
    
    .search-box {
        flex: none;
        width: 100%;
        max-width: 400px;
    }
    
    .nav-inner {
        flex-wrap: wrap;
    }
    
    .nav-item {
        padding: 10px 15px;
        font-size: 14px;
    }
}

/* 隐藏文件输入 */
.hidden-file-input {
    display: none;
}

/* 加载提示 */
.loading-tip {
    text-align: center;
    padding: 40px;
    color: #8b7355;
    font-size: 14px;
}

/* 缩放控制 */
.zoom-controls {
    display: flex;
    align-items: center;
    gap: 8px;
}

.zoom-btn {
    width: 28px;
    height: 28px;
    border: 1px solid #d4c8a8;
    background: #f5efe0;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    color: #6b5344;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

.zoom-btn:hover {
    background: #e8dfc8;
}

.zoom-level {
    font-size: 12px;
    color: #8b7355;
    min-width: 50px;
    text-align: center;
}

/* ========== 全屏预览按钮 ========== */
.fs-btn {
    padding: 6px 14px;
    background: linear-gradient(to bottom, #c41e3a 0%, #a01830 100%);
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 13px;
    font-weight: bold;
    cursor: pointer;
    font-family: "Microsoft YaHei", sans-serif;
    transition: all 0.2s;
}

.fs-btn:hover {
    background: linear-gradient(to bottom, #d42e4a 0%, #c41e3a 100%);
}

/* 全屏状态下的预览区（铺满屏幕） */
.preview-area:fullscreen,
.preview-area:-webkit-full-screen,
.preview-area.fs-active {
    width: 100vw;
    height: 100vh;
    background: #e8e4d8;
    padding: 20px;
    box-sizing: border-box;
    border-radius: 0;
    box-shadow: none;
    border: none;
}

.preview-area:fullscreen .a4-container,
.preview-area:-webkit-full-screen .a4-container,
.preview-area.fs-active .a4-container {
    align-items: center;
}