* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.header {
    text-align: center;
    margin-bottom: 30px;
}

.header h1 {
    color: #2c3e50;
    margin-bottom: 20px;
}

.upload-section {
    display: flex;
    justify-content: center;
    gap: 10px;
}

.file-input {
    display: none;
}

.upload-btn {
    background-color: #3498db;
    color: white;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.upload-btn:hover {
    background-color: #2980b9;
}

.preview-container {
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.document-preview {
    display: flex;
    flex-direction: column;
    height: 80vh;
}

.document-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    background-color: #f8f9fa;
    border-bottom: 1px solid #e9ecef;
}

.document-title {
    font-size: 1.2em;
    font-weight: 600;
    color: #2c3e50;
}

.document-tools {
    display: flex;
    gap: 10px;
}

.tool-btn {
    background-color: #e9ecef;
    border: none;
    padding: 6px 12px;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.tool-btn:hover {
    background-color: #dee2e6;
}

.document-content {
    flex: 1;
    overflow: auto;
    padding: 20px;
    background-color: white;
}

.placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: #6c757d;
}

.placeholder img {
    width: 64px;
    height: 64px;
    margin-bottom: 20px;
}

/* 文档内容样式 */
.document-styled-content {
    font-family: "Times New Roman", Times, serif;
    line-height: 1.6;
    color: #333;
    background-color: white;
    transition: transform 0.3s ease;
}

.document-styled-content h1 {
    font-size: 2em;
    margin: 1em 0 0.5em;
    color: #2c3e50;
}

.document-styled-content h2 {
    font-size: 1.5em;
    margin: 1em 0 0.5em;
    color: #2c3e50;
}

.document-styled-content h3 {
    font-size: 1.17em;
    margin: 1em 0 0.5em;
    color: #2c3e50;
}

.document-styled-content p {
    margin-bottom: 1em;
    text-align: justify;
}

.document-styled-content ul,
.document-styled-content ol {
    margin-left: 2em;
    margin-bottom: 1em;
}

.document-styled-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1em 0;
}

.document-styled-content th,
.document-styled-content td {
    border: 1px solid #dee2e6;
    padding: 8px;
    text-align: left;
}

.document-styled-content th {
    background-color: #f8f9fa;
    font-weight: bold;
}

.document-styled-content img {
    max-width: 100%;
    height: auto;
    margin: 1em 0;
}

.document-styled-content a {
    color: #3498db;
    text-decoration: none;
}

.document-styled-content a:hover {
    text-decoration: underline;
}

/* 打印样式 */
@media print {
    .header,
    .document-header,
    .document-tools {
        display: none;
    }

    .document-styled-content {
        margin: 0;
        padding: 0;
        transform: none !important;
    }
}

/* 缩放控制 */
.zoom-controls {
    position: fixed;
    bottom: 20px;
    right: 20px;
    display: flex;
    gap: 10px;
    background-color: white;
    padding: 10px;
    border-radius: 4px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}