Revise paste 5f7f72e36342f

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Number Pattern Generator</title>
    <style>
        :root {
            --primary: #4F46E5; 
            --primary-hover: #4338CA;
            --secondary: #E5E7EB;
            --secondary-hover: #D1D5DB;
            --success: #10B981;
            --accent: #059669;
            --bg-color: #F3F4F6;
            --card-bg: #FFFFFF;
            --text-main: #1F2937;
            --text-muted: #4B5563;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
            background-color: var(--bg-color);
            color: var(--text-main);
            margin: 0;
            padding: 2rem;
            display: flex;
            justify-content: center;
        }
        .container {
            background: var(--card-bg);
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
            width: 100%;
            max-width: 1200px;
        }
        h1 {
            margin-top: 0;
            font-size: 1.5rem;
            color: var(--text-main);
            border-bottom: 2px solid #E5E7EB;
            padding-bottom: 1rem;
            margin-bottom: 1.5rem;
        }
        .input-group {
            margin-bottom: 1.5rem;
        }
        label {
            display: block;
            font-weight: 600;
            margin-bottom: 0.5rem;
            color: #374151;
        }
        textarea, input[type="text"] {
            width: 100%;
            padding: 0.75rem;
            border: 1px solid #D1D5DB;
            border-radius: 6px;
            font-family: inherit;
            box-sizing: border-box;
            font-size: 1rem;
        }
        textarea {
            resize: vertical;
            min-height: 180px;
            font-family: monospace;
        }
        .button-group {
            display: flex;
            gap: 1rem;
            margin-bottom: 1rem;
        }
        .master-copy-group {
            display: flex;
            gap: 1rem;
            margin-bottom: 2rem;
            padding: 1rem;
            background: #EEF2FF;
            border-radius: 8px;
            border: 1px solid #E0E7FF;
        }
        button {
            border: none;
            padding: 0.75rem 1.5rem;
            border-radius: 6px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background-color 0.2s, color 0.2s;
            flex: 1;
        }
        .btn-primary {
            background-color: var(--primary);
            color: white;
        }
        .btn-primary:hover {
            background-color: var(--primary-hover);
        }
        .btn-secondary {
            background-color: var(--secondary);
            color: var(--text-muted);
        }
        .btn-secondary:hover {
            background-color: var(--secondary-hover);
            color: var(--text-main);
        }
        .btn-master-copy {
            background-color: #FFFFFF;
            border: 2px solid var(--primary);
            color: var(--primary);
        }
        .btn-master-copy:hover {
            background-color: var(--primary);
            color: #FFFFFF;
        }
        .results-section {
            margin-bottom: 2rem;
        }
        .section-title {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-muted);
            margin-bottom: 1rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }
        .results-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 1.5rem;
        }
        .result-card {
            background: #F9FAFB;
            border: 1px solid #E5E7EB;
            border-radius: 8px;
            padding: 1.5rem;
            position: relative;
            display: flex;
            flex-direction: column;
        }
        .card-header-group {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 2px solid #E5E7EB;
            padding-bottom: 0.5rem;
            margin-bottom: 1rem;
        }
        .result-card h3 {
            margin: 0;
            font-size: 1.25rem;
            color: var(--primary);
        }
        .btn-copy-all {
            background: none;
            border: 1px solid var(--primary);
            color: var(--primary);
            padding: 0.25rem 0.5rem;
            font-size: 0.75rem;
            border-radius: 4px;
            cursor: pointer;
            font-weight: 600;
            flex: none;
            transition: all 0.2s;
        }
        .btn-copy-all:hover {
            background: var(--primary);
            color: white;
        }
        .list-container {
            display: flex;
            flex-direction: column;
            gap: 0.25rem;
        }
        .list-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0.25rem 0.5rem;
            background: #FFFFFF;
            border: 1px solid #F3F4F6;
            border-radius: 4px;
            font-family: monospace;
            font-size: 1.25rem;
            font-weight: 500;
        }
        .btn-copy-item {
            background: none;
            border: none;
            color: #9CA3AF;
            cursor: pointer;
            font-size: 0.85rem;
            padding: 0.2rem;
            border-radius: 4px;
        }
        .btn-copy-item:hover {
            color: var(--primary);
            background: #F3F4F6;
        }
        .error {
            color: #DC2626;
            margin-bottom: 1rem;
            font-weight: 500;
            padding: 0.75rem;
            background: #FEF2F2;
            border-radius: 6px;
            display: none;
        }
    </style>
</head>
<body>

<div class="container">
    <h1>Number Pattern Generator</h1>
    
    <div id="error-msg" class="error"></div>

<div class="input-group">
        <label for="dataset">Dataset (Numbers to search):</label>
        <textarea id="dataset">170913
249068
278057
781396
768960
450872
143807
219981

Target Pair: