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

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

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

.header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
    padding: 2rem 0;
    margin-bottom: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.card {
    background: white;
    border-radius: 10px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: bold;
    color: #555;
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: bold;
    transition: transform 0.2s, box-shadow 0.2s;
    text-decoration: none;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.btn-secondary {
    background: #6c757d;
}

.btn-secondary:hover {
    box-shadow: 0 4px 12px rgba(108, 117, 125, 0.3);
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.file-upload {
    position: relative;
    display: block;
    width: 100%;
    background: #f8f9fa;
    border: 2px dashed #ddd;
    border-radius: 5px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.file-upload:hover {
    border-color: #667eea;
    background: #e3f2fd;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.2);
}

.file-upload.dragover {
    border-color: #4caf50;
    background: #e8f5e8;
}

.results-section {
    display: none;
}

.stats {
    background: #e3f2fd;
    padding: 1rem;
    border-radius: 5px;
    margin-bottom: 1rem;
    border-left: 4px solid #2196f3;
}

.results-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1rem;
}

.results-table th,
.results-table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

.results-table th {
    background-color: #f8f9fa;
    font-weight: bold;
}

.results-table tbody tr:hover {
    background-color: #f5f5f5;
    cursor: pointer;
}

.highlighted-text {
    background: white;
    border: 1px solid #ddd;
    border-radius: 5px;
    padding: 1rem;
    max-height: 400px;
    overflow-y: auto;
    white-space: pre-wrap;
    font-family: 'Courier New', monospace;
    line-height: 1.4;
}

.loading {
    text-align: center;
    padding: 2rem;
    color: #666;
}

.error {
    background: #ffebee;
    color: #c62828;
    padding: 1rem;
    border-radius: 5px;
    margin-bottom: 1rem;
    border-left: 4px solid #f44336;
}

.success {
    background: #e8f5e8;
    color: #2e7d32;
    padding: 1rem;
    border-radius: 5px;
    margin-bottom: 1rem;
    border-left: 4px solid #4caf50;
}

@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .card {
        padding: 1rem;
    }
    
    .results-table {
        font-size: 0.9rem;
    }
}