body {
    font-family: "Microsoft JhengHei", sans-serif;
    margin: 0;
    padding: 20px;
    background: #f5f5f5;
    display: flex;
    gap: 20px;
}

#control-panel {
    width: 240px;
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    gap: 15px;
    height: fit-content;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
    font-size: 14px;
}

select,
input[type="range"] {
    padding: 6px;
    border: 1px solid #ccc;
    border-radius: 4px;
}

button.action-btn {
    padding: 12px;
    background: #007bff;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 700;
}

#preview-container {
    display: flex;
    flex-grow: 1;
    background: #ddd;
    padding: 20px;
    overflow: auto;
    position: relative;
}

#paper-preview {
    background: #fff;
    padding: 20mm;
    box-sizing: border-box;
    width: 210mm;
    height: 297mm;
}

#editor {
    width: 100%;
    height: 100%;
    outline: none;
    writing-mode: vertical-rl;
    text-orient: upright;
}

    #editor > div {
        min-height: 1em;
        display: flex !important;
        flex-direction: column;
        align-items: flex-start;
        margin-left: 10px;
        padding: 0 4px;
    }

        #editor > div:hover {
            background: rgba(0, 123, 255, 0.05);
        }

        #editor > div.selected-line {
            background: rgba(0, 123, 255, 0.1) !important;
            box-shadow: 0 0 0 1px #ff7675;
        }

#line-floating-menu {
    display: none;
    position: fixed;
    bottom: 20px;
    left: 280px;
    background: #fff0f1;
    border: 2px solid #ff7675;
    padding: 12px;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    z-index: 99999;
    flex-direction: column;
    gap: 8px;
    width: 210px;
}

    #line-floating-menu h4 {
        margin: 0;
        color: #d63031;
        font-size: 14px;
        cursor: move;
        background: #ffe4e6;
        padding: 4px;
        border-radius: 4px;
        text-align: center;
        user-select: none;
    }

.menu-btn-group {
    display: flex;
    gap: 4px;
}

    .menu-btn-group button {
        flex: 1;
        padding: 6px;
        border: 1px solid #ccc;
        background: #fff;
        cursor: pointer;
        border-radius: 4px;
        font-weight: 700;
    }

        .menu-btn-group button.active {
            background: #28a745;
            color: #fff;
            border-color: #28a745;
        }

.adjust-row {
    display: flex;
    align-items: center;
    gap: 5px;
}

    .adjust-row button {
        padding: 4px 10px;
        border: 1px solid #ccc;
        background: #fff;
        cursor: pointer;
        border-radius: 4px;
        font-weight: 700;
        user-select: none;
    }

        .adjust-row button:hover {
            background: #eee;
        }

    .adjust-row input[type="range"] {
        flex-grow: 1;
        padding: 0;
    }

@media print {
    #control-panel,
    #line-floating-menu {
        display: none !important;
    }

    body,
    #preview-container {
        background: #fff;
        padding: 0;
        margin: 0;
    }

    #paper-preview {
        width: 100% !important;
        height: 100% !important;
        box-shadow: none;
        /* 1. 移除原本的 flex 與置中設定，改為一般的區塊顯示 */
        display: block !important;
        /* 2. 透過 padding 設定您需要的上邊界與右邊界 (數值可自由調整) */
        padding-top: 30mm !important; /* 控制上方留白 */
        padding-right: 30mm !important; /* 控制右側留白 */
        padding-bottom: 0 !important;
        padding-left: 0 !important;
        /* padding: 0;
          display: flex !important;
          justify-content: center !important;
          align-items: center !important; */
    }

    #editor {
        height: auto !important;
        /* width: auto !important;  加入這行，讓寬度貼合內容 */
        max-height: 100% !important;
    }
}

@media print {
    @page {
        size: A4 portrait;
        margin: 0mm;
    }
}