* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            padding: 20px;
        }
        
        .container {
            max-width: 900px;
            margin: 0 auto;
            background: rgba(255, 255, 255, 0.95);
            border-radius: 20px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.1);
            overflow: hidden;
        }
        
        .header {
            background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
            padding: 30px;
            text-align: center;
            color: white;
        }
        
        .header h1 {
            font-size: 2.5rem;
            margin-bottom: 10px;
            font-weight: 600;
        }
        
        .header p {
            font-size: 1.1rem;
            opacity: 0.9;
        }
        
        .content {
            padding: 40px;
        }
        
        .section {
            margin-bottom: 30px;
        }
        
        .section h2 {
            color: #333;
            margin-bottom: 15px;
            font-size: 1.4rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .icon {
            font-size: 1.2rem;
        }
        
        .input-group {
            margin-bottom: 20px;
        }
        
        .input-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
            color: #555;
        }
        
        .input-group input, .input-group textarea, .input-group select {
            width: 100%;
            padding: 12px 15px;
            border: 2px solid #e0e0e0;
            border-radius: 10px;
            font-size: 1rem;
            transition: all 0.3s ease;
        }
        
        .input-group input:focus, .input-group textarea:focus, .input-group select:focus {
            border-color: #4facfe;
            outline: none;
            box-shadow: 0 0 0 3px rgba(79, 172, 254, 0.1);
        }
        
        .checkbox-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 15px;
            margin-top: 15px;
        }
        
        .checkbox-item {
            display: flex;
            align-items: center;
            padding: 12px 15px;
            background: #f8f9fa;
            border-radius: 10px;
            border: 2px solid transparent;
            transition: all 0.3s ease;
            cursor: pointer;
        }
        
        .checkbox-item:hover {
            background: #e3f2fd;
            border-color: #4facfe;
        }
        
        .checkbox-item input[type="checkbox"] {
            width: 18px;
            height: 18px;
            margin-right: 12px;
            cursor: pointer;
        }
        
        .checkbox-item.checked {
            background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
            color: white;
            border-color: #4facfe;
        }
        
        .custom-point {
            display: grid;
            grid-template-columns: 1fr auto;
            gap: 10px;
            align-items: end;
           
        }
          .custom-point input, .input-group textarea, .input-group select {
            width: 100%;
            padding: 12px 15px;
            border: 2px solid #e0e0e0;
            border-radius: 10px;
            font-size: 1rem;
            transition: all 0.3s ease;
        }
          .custom-point input:focus, .input-group textarea:focus, .input-group select:focus {
            border-color: #4facfe;
            outline: none;
            box-shadow: 0 0 0 3px rgba(79, 172, 254, 0.1);
        }
        
        .btn {
            padding: 15px 30px;
            border: none;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        
        .btn-primary {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
        }
        
        .btn-secondary {
            background: #6c757d;
            color: white;
        }
        
        .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.2);
        }
        textarea {
            resize: none;
        }
        .btn-generate {
            background: linear-gradient(135deg, #56ab2f 0%, #a8e6cf 100%);
            color: white;
            padding: 15px 30px;
            font-size: 1.1rem;
            border-radius: 50px;
            margin: 30px 0;
            width: 100%;
        }
        
        .output-section {
            background: #f8f9fa;
            border-radius: 15px;
            padding: 25px;
            margin-top: 30px;
        }
        
        .message-output {
            background: white;
            border: 2px solid #e0e0e0;
            border-radius: 10px;
            padding: 20px;
            white-space: pre-wrap;
            font-family: 'Courier New', monospace;
            font-size: 0.95rem;
            line-height: 1.6;
            min-height: 200px;
            max-height: 400px;
            overflow-y: auto;
        }
        
        .copy-btn {
            background: linear-gradient(135deg, #ff6b6b 0%, #ee5a24 100%);
            color: white;
            margin-top: 15px;
            width: 100%;
        }
        
        .custom-points-list {
            margin-top: 15px;
        }
        
        .custom-point-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px;
            background: #e3f2fd;
            border-radius: 8px;
            margin-bottom: 10px;
        }
        
        .remove-btn {
            background: #dc3545;
            color: white;
            border: none;
            border-radius: 50%;
            width: 24px;
            height: 24px;
            cursor: pointer;
            font-size: 12px;
        }