/**
 * 文档查看器样式文件
 * 为博客中的文档嵌入功能提供美观的样式
 */

/* 文档查看器容器 */
.doc-viewer-container {
    position: relative;
    background: #fff;
    transition: box-shadow 0.3s ease;
}

.doc-viewer-container:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

/* 标题栏样式 */
.doc-viewer-title {
    position: relative;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-bottom: 1px solid #dee2e6;
    display: flex;
    align-items: center;
    justify-content: space-between;
}


/* 全屏按钮 */
.doc-viewer-fullscreen {
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
    border-radius: 3px;
    color: #6c757d;
    transition: all 0.2s;
}

.doc-viewer-fullscreen:hover {
    background: #e9ecef;
    color: #495057;
}

/* iframe样式优化 */
.doc-viewer-container iframe {
    display: block;
    background: #fff;
    transition: opacity 0.3s ease;
}

.doc-viewer-container iframe:not([src]) {
    opacity: 0.5;
}

/* 加载状态 */
.doc-viewer-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    color: #6c757d;
    z-index: 10;
}

.doc-viewer-loading .spinner {
    width: 40px;
    height: 40px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #3498db;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 10px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 错误状态 */
.doc-viewer-error {
    padding: 40px 20px;
    text-align: center;
    color: #e74c3c;
    background: #fdf2f2;
    border: 1px solid #fecaca;
    border-radius: 8px;
    margin: 20px 0;
}

.doc-viewer-error .error-icon {
    font-size: 48px;
    margin-bottom: 15px;
    display: block;
}

.doc-viewer-error .error-message {
    font-size: 16px;
    margin-bottom: 15px;
    font-weight: 500;
}

.doc-viewer-error .error-details {
    font-size: 14px;
    color: #7f1d1d;
    margin-bottom: 20px;
}

/* 下载链接容器 */
.doc-download-container {
    transition: all 0.3s ease;
}

.doc-download-container:hover {
    background: #f1f3f4 !important;
    border-color: #3498db !important;
}

.doc-download-container .download-info {
    margin-bottom: 15px;
    color: #6c757d;
    font-size: 14px;
}

/* 文件类型图标 */
.file-type-icon {
    display: inline-block;
    width: 24px;
    height: 24px;
    margin-right: 8px;
    vertical-align: middle;
}

.file-type-pdf::before { content: "📕"; }
.file-type-doc::before, 
.file-type-docx::before { content: "📘"; }
.file-type-xls::before, 
.file-type-xlsx::before { content: "📗"; }
.file-type-ppt::before, 
.file-type-pptx::before { content: "📙"; }
.file-type-txt::before { content: "📄"; }
.file-type-default::before { content: "📎"; }

/* 响应式设计 */
@media (max-width: 768px) {
    .doc-viewer-container {
        margin: 15px 0;
    }
    
    .doc-viewer-title {
        padding: 8px 12px;
        font-size: 13px;
    }
    
    .doc-download-container {
        padding: 15px;
        margin: 15px 0;
    }
    
    .doc-download-container .download-icon {
        font-size: 36px !important;
    }
}

@media (max-width: 480px) {
    .doc-viewer-container {
        border-radius: 4px;
    }
    
    .doc-viewer-title {
        padding: 6px 10px;
        font-size: 12px;
    }
}

/* 按钮样式 */
.doc-viewer-download-btn,
.doc-viewer-toggle-btn {
    transition: all 0.2s ease;
}

.doc-viewer-download-btn:hover,
.doc-viewer-toggle-btn:hover {
    background: #e9ecef;
    color: #495057;
    transform: scale(1.1);
}

/* 内容区域样式 */
.doc-viewer-content {
    position: relative;
}

/* 暗色主题支持 */
@media (prefers-color-scheme: dark) {
    .doc-viewer-container {
        background: #2d3748;
        border-color: #4a5568;
    }
    
    .doc-viewer-title {
        background: linear-gradient(135deg, #4a5568 0%, #2d3748 100%);
        color: #e2e8f0;
        border-bottom-color: #4a5568;
    }
    
    .doc-viewer-download-btn,
    .doc-viewer-toggle-btn {
        color: #a0aec0;
    }
    
    .doc-viewer-download-btn:hover,
    .doc-viewer-toggle-btn:hover {
        background: #4a5568;
        color: #e2e8f0;
    }
    
    .doc-viewer-fullscreen {
        color: #a0aec0;
    }
    
    .doc-viewer-fullscreen:hover {
        background: #4a5568;
        color: #e2e8f0;
    }
    
    .doc-viewer-loading {
        color: #a0aec0;
    }
    
    .doc-viewer-content {
        background: #2d3748;
    }
    
    .doc-viewer-container iframe {
        background: #2d3748;
    }
    
    .doc-download-container {
        background: #2d3748 !important;
        border-color: #4a5568 !important;
        color: #e2e8f0;
    }
    
    .doc-download-container:hover {
        background: #4a5568 !important;
        border-color: #3498db !important;
    }
    
    .doc-download-container .download-info {
        color: #a0aec0;
    }
}

/* 博客主题黑夜模式适配 */
[data-theme="dark"] .doc-viewer-container,
.dark .doc-viewer-container,
body.dark .doc-viewer-container {
    background: #2d3748;
    border-color: #4a5568;
}

[data-theme="dark"] .doc-viewer-title,
.dark .doc-viewer-title,
body.dark .doc-viewer-title {
    background: linear-gradient(135deg, #4a5568 0%, #2d3748 100%);
    color: #e2e8f0;
    border-bottom-color: #4a5568;
}

[data-theme="dark"] .doc-viewer-download-btn,
[data-theme="dark"] .doc-viewer-toggle-btn,
.dark .doc-viewer-download-btn,
.dark .doc-viewer-toggle-btn,
body.dark .doc-viewer-download-btn,
body.dark .doc-viewer-toggle-btn {
    color: #a0aec0;
}

[data-theme="dark"] .doc-viewer-download-btn:hover,
[data-theme="dark"] .doc-viewer-toggle-btn:hover,
.dark .doc-viewer-download-btn:hover,
.dark .doc-viewer-toggle-btn:hover,
body.dark .doc-viewer-download-btn:hover,
body.dark .doc-viewer-toggle-btn:hover {
    background: #4a5568;
    color: #e2e8f0;
}

[data-theme="dark"] .doc-viewer-content,
.dark .doc-viewer-content,
body.dark .doc-viewer-content {
    background: #2d3748;
}

[data-theme="dark"] .doc-viewer-container iframe,
.dark .doc-viewer-container iframe,
body.dark .doc-viewer-container iframe {
    background: #2d3748;
}

/* 打印样式 */
@media print {
    .doc-viewer-container {
        box-shadow: none;
        border: 1px solid #000;
    }
    
    .doc-viewer-title {
        background: #f8f9fa;
        color: #000;
    }
    
    .doc-viewer-fullscreen {
        display: none;
    }
}

/* 动画效果 */
.doc-viewer-fade-in {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 工具提示 */
.doc-viewer-tooltip {
    position: relative;
    cursor: help;
}

.doc-viewer-tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: #333;
    color: #fff;
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 12px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    z-index: 1000;
}

.doc-viewer-tooltip:hover::after {
    opacity: 1;
    visibility: visible;
    bottom: calc(100% + 5px);
}