main {
            display: flex;
            height: 100vh;
            margin: 0;
            padding: 0;
        }

        .title {
            font-size: 24px;
            font-weight: bold;
            text-align: center;
            margin-bottom: 10px;
            color: #333;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        #canvasContainer {
            flex: 1.5;  /* 캔버스 영역 비율 조정 */
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
        }
        canvas {
            border: 1px solid #ddd;
            width: 100%;
            height: 100%;
            max-height: 100vh;
            background-color: #333;

        }

        #controls {
            flex: 1;
            padding: 20px;
            max-width: 400px;
            background-color: #fff;
            display: flex;
            flex-direction: column;
            justify-content: flex-start;
            overflow-y: auto;
            overflow-x: hidden; /* 가로 스크롤 방지 */
            box-sizing: border-box; /* 패딩을 너비에 포함 */
        }



        #controls label {
            margin-bottom: 8px;
            font-weight: bold;
            color: #555;
        }
        #controls input[type="file"]{
            border: 1px solid #ddd;
            border-radius: 4px;
            padding: 8px;
            margin-bottom: 10px;
            font-size: 16px;
            color: #000;
            width: 100%;
        }
        #controls textarea,
        #controls input[type="text"],
        #controls select,
        #controls input[type="number"]
        {
            margin-bottom: 15px;
            padding: 8px;
            font-size: 16px;
            color: #000;
            width: 100%;
            box-sizing: border-box; /* 입력 요소의 패딩을 너비에 포함 */
        }

        #controls input[type="tel"],
        #controls input[type="email"]

        {
            padding: 8px;
            font-size: 16px;
            color: #000;
            width: 100%;
            box-sizing: border-box; /* 입력 요소의 패딩을 너비에 포함 */
        }

        .tela
        {
            margin-bottom: 15px;
            font-size: 16px;
            color: #000;
            width: 100%;
            box-sizing: border-box; /* 입력 요소의 패딩을 너비에 포함 */
        }


        #neonText {
            resize: none;
            font-size: 16px;

        }
        #controls textarea {
            min-height: 100px;  /* textarea 최소 높이 설정 */
            resize: vertical;   /* 수직 리사이즈만 허용 */
        }



        .color-swatch.white-grey {
            background-color: #D3D3D3;
            border: 1px solid #a89c9c;
        }

        .color-swatch.white-grey.selected {
            border-color: #000;
            border: 2px solid #000000;

        }

        .color-swatch {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            cursor: pointer;
            border: 2px solid transparent;
            transition: all 0.3s ease;
        }

        .color-swatch.selected {
            border-color: #000;
            transform: scale(1.1);
        }

        .color-swatch:hover {
            transform: scale(1.1);
            box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
        }

        .color-swatch.white-grey:hover {
            border: 2px solid #000000;
        }

        .radio-group {
            display: flex;
            margin-bottom: 20px;
            align-items: center;
            flex-direction: row; /* 가로 배치 유지 */
            justify-content: flex-start; /* 왼쪽 정렬 */
        }

        .radio-group label {
            display: flex;
            align-items: center;
            cursor: pointer;
            font-size: 16px;
            margin-right: 10px;
            white-space: nowrap; /* 텍스트 줄바꿈 방지 */
        }

        .radio-group input[type="radio"] {
            margin: 0;
            width: 16px;
            height: 16px;
            margin-right: 5px;
        }





        #colorSwatches {
            display: flex;
            flex-wrap: wrap;
            gap: 5px;
            margin-bottom: 20px;
        }

        #sendButton {
            background-color: #4CAF50;
            color: white;
            padding: 12px;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-size: 16px;
            text-transform: uppercase;
            letter-spacing: 1px;
            transition: background-color 0.3s ease;
        }

        #sendButton:hover {
            background-color: #45a049;
        }

        .font-dropdown {
            position: relative;
            width: 100%;
            margin-bottom: 15px;
        }

        .font-dropdown-btn {
            width: 100%;
            padding: 10px 15px;
            background-color: #fff;
            border: 2px solid #8a2be2;
            border-radius: 5px;
            cursor: pointer;
            text-align: left;
            font-size: 16px;
            color: #8a2be2;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .font-dropdown-btn::after {
            content: '\25BC';
            font-size: 12px;
        }

        .font-dropdown-btn.open::after {
            content: '\25B2';
        }

        .font-dropdown-content {
            display: none;
            position: relative;
            background-color: #fff;
            width: 100%;
            z-index: 1;
            margin-top: 5px;
            padding: 10px 10px 10px 0px;
        }

        .font-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 10px;
        }

        .font-button {
            padding: 10px;
            text-align: center;
            border: 1px solid #ddd;
            border-radius: 5px;
            background-color: #fff;
            cursor: pointer;
            transition: all 0.3s ease;
            font-size: 14px;
        }

        .font-button:hover {
            transform: scale(1.05);
            box-shadow: 0 0 10px rgba(138, 43, 226, 0.2);
        }

        .file-upload-container {
            margin-bottom: 20px;
        }
        .uploaded-files {
            margin-top: 10px;
        }
        .file-item {
            display: flex;
            align-items: center;
            margin-bottom: 5px;
        }
        .delete-file {
            color: red;
            cursor: pointer;
            margin-left: 10px;
            font-weight: bold;
        }

        #signOptions button {
            padding: 10px 20px;
            cursor: pointer;
        }

        #signOptions button {
            margin: 0 5px 5px 0;
            padding: 10px 20px;
            cursor: pointer;
        }
        .button-group {
            display: flex;
            justify-content: flex-start;
            margin-bottom: 20px;
        }

        #signOptions button.selected {
            background-color: #4CAF50;
            color: white;
        }


        .button-group button {
            padding: 10px 20px;
            margin-right: 10px;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            background-color: #f0f0f0;
            transition: background-color 0.3s;
        }

        .button-group button.selected {
            background-color: #4CAF50;
            color: white;
        }

        .font-grid {
            max-width: 600px;
            margin: 0 auto;
        }

        .font-grid h3 {
            text-align: center;
            color: #8a2be2;
            margin-bottom: 20px;
        }

        .font-buttons {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 10px;
        }

        .font-button {
            padding: 10px;
            border: 1px solid #ddd;
            border-radius: 5px;
            background-color: white;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .font-button:hover {
            transform: scale(1.05);
            box-shadow: 0 0 10px rgba(138, 43, 226, 0.5);
        }

        .font-button.selected {
            border-color: #8a2be2;
            box-shadow: 0 0 10px rgba(138, 43, 226, 0.5);
        }



        /* 모바일 최적화를 위한 미디어 쿼리 */
        @media (max-width: 768px) {
            main {
                flex-direction: column;
                height: auto;
            }

            #colorSwatches {
                display: flex;
                flex-wrap: wrap;
                gap: 10px;
                margin-bottom: 20px;
            }


            #controls textarea {
                min-height: 70px;  /* textarea 최소 높이 설정 */
                resize: none;   /* 수직 리사이즈만 허용 */
            }

            .radio-group {
                flex-direction: row; /* 가로 배치 유지 */
                justify-content: flex-start; /* 왼쪽 정렬 */
            }

            .radio-group label {
                margin-right: 40px; /* 옵션 사이 간격 증가 */
                font-size: 20px; /* 모바일에서 글자 크기 약간 축소 */
            }

            .radio-group input[type="radio"] {
                width: 24px; /* 모바일에서 라디오 버튼 크기 약간 축소 */
                height: 24px;
            }


            #canvasContainer {
                flex: none;
                height: 50vh;
            }

            canvas {
                max-height: none;
            }


            #controls {
                max-width: 100%;
                padding: 20px;
            }

            #controls textarea,
            #controls input[type="text"],
            #controls select,
            #controls input[type="number"],
            #controls input[type="file"],
            #controls input[type="tel"],
            #controls input[type="email"]
            {
                font-size: 14px;
            }
        }