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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
}

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

header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

.upload-section {
    margin-bottom: 20px;
}

.upload-area {
    background: white;
    border: 3px dashed #667eea;
    border-radius: 15px;
    padding: 60px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.upload-area:hover,
.upload-area.dragover {
    border-color: #764ba2;
    background: #f8f9ff;
    transform: scale(1.01);
}

.upload-icon {
    font-size: 4rem;
    margin-bottom: 15px;
}

.upload-area p {
    color: #666;
    margin: 10px 0;
}

.upload-btn {
    display: inline-block;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 12px 30px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 1rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.upload-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
}

/* 工具栏 */
.toolbar {
    background: white;
    border-radius: 10px;
    padding: 15px 20px;
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.file-count {
    font-size: 1.1rem;
    font-weight: 600;
    color: #333;
}

.file-count span {
    color: #667eea;
}

.view-toggle {
    display: flex;
    gap: 5px;
    background: #f0f0f0;
    padding: 4px;
    border-radius: 8px;
}

.view-btn {
    background: transparent;
    border: none;
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    color: #666;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.view-btn:hover {
    background: rgba(102, 126, 234, 0.1);
    color: #667eea;
}

.view-btn.active {
    background: white;
    color: #667eea;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.clear-btn {
    background: #dc3545;
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.clear-btn:hover {
    background: #c82333;
    transform: translateY(-2px);
}

/* 文件容器 */
.files-container {
    margin-bottom: 20px;
}

.files-list {
    display: grid;
    gap: 15px;
}

/* 列表视图 */
.files-list.list-view {
    grid-template-columns: 1fr;
}

.files-list.list-view .file-card {
    display: flex;
    align-items: center;
    padding: 15px 20px;
}

.files-list.list-view .file-preview {
    width: 60px;
    height: 80px;
    margin-right: 20px;
    flex-shrink: 0;
}

.files-list.list-view .file-info {
    flex: 1;
    margin-right: 20px;
}

.files-list.list-view .file-actions {
    flex-shrink: 0;
}

/* 看板视图 */
.files-list.grid-view {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
}

.files-list.grid-view .file-card {
    display: flex;
    flex-direction: column;
    padding: 20px;
}

.files-list.grid-view .file-preview {
    width: 100%;
    height: 200px;
    margin-bottom: 15px;
}

.files-list.grid-view .file-info {
    margin-bottom: 15px;
}

.files-list.grid-view .file-actions {
    width: 100%;
}

.files-list.grid-view .file-actions button {
    width: 100%;
    margin-bottom: 8px;
}

/* 文件卡片 */
.file-card {
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.file-card:hover {
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
    transform: translateY(-2px);
}

.file-preview {
    background: #f5f5f5;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

.file-preview canvas {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.file-preview .pdf-icon {
    font-size: 3rem;
    color: #dc3545;
}

.file-info h4 {
    font-size: 1rem;
    color: #333;
    margin-bottom: 5px;
    word-break: break-word;
}

.file-info .file-meta {
    font-size: 0.85rem;
    color: #666;
}

.file-meta span {
    margin-right: 15px;
}

.file-actions {
    display: flex;
    gap: 8px;
}

.file-actions button {
    padding: 8px 16px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.preview-btn {
    background: #667eea;
    color: white;
    flex: 1;
}

.preview-btn:hover {
    background: #764ba2;
}

.download-btn {
    background: #28a745;
    color: white;
    flex: 1;
}

.download-btn:hover {
    background: #218838;
}

.delete-btn {
    background: #dc3545;
    color: white;
}

.delete-btn:hover {
    background: #c82333;
}

/* 模态框 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 1000;
    overflow: auto;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-content {
    background: white;
    border-radius: 15px;
    width: 100%;
    max-width: 1000px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.modal-header {
    padding: 20px;
    border-bottom: 1px solid #eee;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 1.3rem;
    color: #333;
    margin: 0;
}

.close-btn {
    background: none;
    border: none;
    font-size: 2rem;
    color: #666;
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.close-btn:hover {
    background: #f0f0f0;
    color: #333;
}

.viewer-controls {
    padding: 15px 20px;
    border-bottom: 1px solid #eee;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
    background: #f8f9fa;
}

.control-btn {
    background: #667eea;
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s ease;
}

.control-btn:hover {
    background: #764ba2;
}

.control-btn:disabled {
    background: #ccc;
    cursor: not-allowed;
}

.page-info {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 500;
}

.page-info input {
    width: 60px;
    padding: 5px 10px;
    border: 2px solid #ddd;
    border-radius: 5px;
    text-align: center;
    font-size: 1rem;
}

.page-info input:focus {
    outline: none;
    border-color: #667eea;
}

.zoom-controls {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-left: 20px;
    padding-left: 20px;
    border-left: 2px solid #ddd;
}

#zoomLevel {
    min-width: 50px;
    text-align: center;
    font-weight: 500;
}

.pdf-viewer {
    flex: 1;
    background: #525659;
    overflow: auto;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 20px;
}

#pdfCanvas {
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.3);
    max-width: 100%;
    height: auto;
}

.loading {
    text-align: center;
    padding: 40px;
    color: white;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 15px;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Responsive */
@media (max-width: 768px) {
    header h1 {
        font-size: 1.8rem;
    }

    .upload-area {
        padding: 40px 15px;
    }

    .upload-icon {
        font-size: 3rem;
    }

    .toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .view-toggle {
        justify-content: center;
    }

    .files-list.list-view .file-card {
        flex-direction: column;
        text-align: center;
    }

    .files-list.list-view .file-preview {
        margin: 0 0 15px 0;
        width: 100%;
        height: 200px;
    }

    .files-list.list-view .file-info {
        margin: 0 0 15px 0;
    }

    .files-list.list-view .file-actions {
        width: 100%;
    }

    .files-list.list-view .file-actions button {
        width: 100%;
        margin-bottom: 8px;
    }

    .files-list.grid-view {
        grid-template-columns: 1fr;
    }

    .viewer-controls {
        gap: 10px;
    }

    .zoom-controls {
        margin-left: 0;
        padding-left: 0;
        border-left: none;
        width: 100%;
        justify-content: center;
        padding-top: 10px;
        border-top: 2px solid #ddd;
    }

    .modal-content {
        max-height: 95vh;
    }
}

/* 工具栏操作按钮 */
.action-btns {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.action-btn {
    padding: 8px 16px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.analyze-btn {
    background: #667eea;
    color: white;
}

.analyze-btn:hover {
    background: #764ba2;
    transform: translateY(-2px);
}

.export-btn {
    background: #17a2b8;
    color: white;
}

.export-btn:hover {
    background: #138496;
    transform: translateY(-2px);
}

/* 分析表格容器 */
.analysis-container {
    background: white;
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 20px;
    overflow: hidden;
}

.analysis-table-wrapper {
    overflow-x: auto;
}

.analysis-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.analysis-table th,
.analysis-table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #eee;
}

.analysis-table th {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    font-weight: 600;
    white-space: nowrap;
    position: sticky;
    top: 0;
}

.analysis-table tbody tr:hover {
    background: #f8f9ff;
}

.analysis-table tbody tr:nth-child(even) {
    background: #fafafa;
}

.analysis-table tbody tr:nth-child(even):hover {
    background: #f0f2ff;
}

.analysis-table td {
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
}

.analysis-table td.summary-cell {
    max-width: 300px;
}

.analysis-table td.filename-cell {
    max-width: 150px;
    word-break: break-all;
}

/* 状态标签 */
.status-badge {
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 500;
    white-space: nowrap;
}

.status-pending {
    background: #ffc107;
    color: #333;
}

.status-analyzing {
    background: #17a2b8;
    color: white;
}

.status-done {
    background: #28a745;
    color: white;
}

.status-error {
    background: #dc3545;
    color: white;
}

/* 表格操作按钮 */
.table-actions {
    display: flex;
    gap: 5px;
}

.table-actions button {
    padding: 5px 10px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.8rem;
    transition: all 0.3s ease;
}

.table-actions .analyze-single-btn {
    background: #667eea;
    color: white;
}

.table-actions .analyze-single-btn:hover {
    background: #764ba2;
}

.table-actions .view-btn-small {
    background: #6c757d;
    color: white;
}

.table-actions .view-btn-small:hover {
    background: #5a6268;
}

/* 文件卡片分析状态 */
.file-card .analysis-status {
    margin-top: 8px;
    padding: 5px 10px;
    background: #f8f9fa;
    border-radius: 5px;
    font-size: 0.85rem;
    color: #666;
}

.file-card .analysis-status.analyzed {
    background: #d4edda;
    color: #155724;
}

/* 响应式表格 */
@media (max-width: 768px) {
    .action-btns {
        width: 100%;
        justify-content: center;
    }

    .analysis-table {
        font-size: 0.8rem;
    }

    .analysis-table th,
    .analysis-table td {
        padding: 8px 10px;
    }

    .analysis-table td {
        max-width: 120px;
    }

    .analysis-table td.summary-cell {
        max-width: 150px;
    }
}

/* 设置模态框 */
.settings-modal {
    max-width: 600px;
}

.settings-body {
    padding: 20px;
    max-height: 70vh;
    overflow-y: auto;
}

.settings-section {
    margin-bottom: 25px;
}

.settings-section h4 {
    font-size: 1.1rem;
    color: #333;
    margin-bottom: 12px;
}

.radio-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.radio-label {
    display: flex;
    align-items: center;
    padding: 12px;
    background: #f8f9fa;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.radio-label:hover {
    background: #e9ecef;
    border-color: #667eea;
}

.radio-label input[type="radio"] {
    margin-right: 10px;
    cursor: pointer;
}

.radio-label input[type="radio"]:checked + span {
    font-weight: 600;
    color: #667eea;
}

.settings-select {
    width: 100%;
    padding: 10px;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    background: white;
    cursor: pointer;
    transition: border-color 0.3s ease;
}

.settings-select:focus {
    outline: none;
    border-color: #667eea;
}

.input-group {
    margin-top: 15px;
}

.input-group label {
    display: block;
    font-weight: 600;
    color: #333;
    margin-bottom: 8px;
}

.settings-input {
    width: 100%;
    padding: 10px;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.settings-input:focus {
    outline: none;
    border-color: #667eea;
}

.input-group small {
    display: block;
    color: #666;
    font-size: 0.85rem;
    margin-top: 5px;
}

.settings-tips {
    background: #fff3cd;
    padding: 15px;
    border-radius: 8px;
    margin-top: 15px;
    border-left: 4px solid #ffc107;
}

.settings-tips p {
    margin: 0 0 10px 0;
    color: #856404;
}

.settings-tips ul {
    margin: 0;
    padding-left: 20px;
    color: #856404;
}

.settings-tips li {
    margin: 5px 0;
}

.settings-tips a {
    color: #667eea;
    text-decoration: none;
}

.settings-tips a:hover {
    text-decoration: underline;
}

.settings-tips code {
    background: #f8f9fa;
    padding: 2px 6px;
    border-radius: 3px;
    font-family: monospace;
    color: #667eea;
    font-size: 0.9em;
}

.settings-footer {
    display: flex;
    gap: 10px;
    padding: 15px 20px;
    border-top: 1px solid #eee;
    background: #f8f9fa;
    margin: 0 -20px -20px -20px;
    border-radius: 0 0 15px 15px;
}

.settings-footer button {
    flex: 1;
}

.settings-btn {
    background: #6c757d;
    color: white;
}

.settings-btn:hover {
    background: #5a6268;
    transform: translateY(-2px);
}

/* 响应式设置 */
@media (max-width: 768px) {
    .settings-modal {
        max-width: 95%;
    }

    .settings-body {
        max-height: 60vh;
    }
}